CN202869070U - Air conditioner - Google Patents
Air conditioner Download PDFInfo
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- CN202869070U CN202869070U CN 201220588070 CN201220588070U CN202869070U CN 202869070 U CN202869070 U CN 202869070U CN 201220588070 CN201220588070 CN 201220588070 CN 201220588070 U CN201220588070 U CN 201220588070U CN 202869070 U CN202869070 U CN 202869070U
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Abstract
The utility model discloses an air conditioner. The air conditioner includes: the compressor is provided with a gas suction end, a gas exhaust end and a gas supplementing end; a four-way valve; the first end of the indoor heat exchanger is connected with a third interface of the four-way valve; the first end of the outdoor heat exchanger is connected with a fourth interface of the four-way valve; the liquid storage device is connected with the second end of the outdoor heat exchanger through a first liquid pipe, is connected with the second end of the indoor heat exchanger through a second liquid pipe, and is connected with the air supplement end of the compressor through an air pipe; a first throttling element disposed on the first liquid pipe; a second throttling element arranged on the second liquid pipe; and a third throttling element connected between the first node and the air supply end of the compressor. Through the utility model discloses, solved among the prior art the problem that single tonifying qi return circuit can't guarantee the air conditioner normal operating under low temperature environment, and then reached the operational effect of guaranteeing the air conditioner, improved unit operating stability and reliability.
Description
Technical field
The utility model relates to the air-conditioner field, in particular to a kind of air-conditioner.
Background technology
The heating capacity decay when the winter temperature of cold is lower of existing air-conditioner is larger, heat deficiency, even can't normally move, and the refrigerating capacity decay is larger when the summer temperature of sweltering heat is higher, refrigeration is not enough, even can't normally move, this just causes air-conditioner to be difficult to satisfy that ultralow temperature heats or the superhigh temperature refrigeration demand, and the system energy efficiency of air-conditioner also can be compressed the air-breathing quantitative limitation of machine simultaneously.Therefore, in recent years, numerous and confused accurate two-stage compression circulation (tonifying Qi the increases the enthalpy circulation) weak points of conventional air-conditioner when solving ultralow temperature or superhigh temperature that adopt such as many enterprises, scholar; Number of patent application is 201010100728.3 to disclose and a kind ofly typically release and the adjustable heat pump type air conditioning system of the capacity that increases the enthalpy loop with cold-producing medium, Fig. 1 is the schematic diagram of this kind air-conditioning system, as shown in Figure 1, this air-conditioning system can be achieved as follows several mode of operations by closing of different magnetic valves:
A. refrigeration mode: under Normal Environmental Temperature; magnetic valve 017, magnetic valve 018 are closed, and refrigerant circulation is the exhaust outlet of compressor 01-3-four-way change-over valve 02-outdoor heat exchanger 03-check valve 04-capillary 05-flash vessel 010-check valve 011-capillary 012-indoor heat exchanger 015-four-way change-over valve 02-compressor air suction mouth 01-2 from compressor 01.
B. heating mode: under Normal Environmental Temperature; magnetic valve 017, magnetic valve 018 are closed; magnetic valve 08 is opened, and refrigerant circulation is from exhaust outlet of compressor 01-3-four-way change-over valve 02-indoor heat exchanger 015-check valve 014 capillary 013-flash vessel 010-check valve 09-capillary 06, capillary 07 and magnetic valve 08-outdoor heat exchanger 03-four-way change-over valve 02-compressor air suction mouth 01-2.
C. refrigeration gushes pattern: under low temperature environment, magnetic valve 017 cuts out, magnetic valve 018 is opened, and refrigerant circulation is from exhaust outlet of compressor 01-3-four-way change-over valve 02-outdoor heat exchanger 03-check valve 04-capillary 05-flash vessel 010-check valve 011-capillary 012-indoor heat exchanger 015-four-way change-over valve 02-compressor air suction mouth 01-2.The compresser cylinder inner refrigerant is by intermediate pressure interface 01-1-magnetic valve 018-check valve 019-compressor air suction mouth 01-2 simultaneously.Realize gushing of part cold-producing medium.
D. heat and release pattern: under hot environment, magnetic valve 017 cuts out, magnetic valve 08, magnetic valve 018 are opened, and refrigerant circulation is from exhaust outlet of compressor 01-3-four-way change-over valve 02-indoor heat exchanger 015 check valve 014-capillary 013-flash vessel 010-check valve 09-capillary 06,07 and magnetic valve 08-outdoor heat exchanger 03-four-way change-over valve 02-compressor air suction mouth 01-2.The compresser cylinder inner refrigerant is realized releasing of part cold-producing medium by intermediate pressure interface 01-1-magnetic valve 018-check valve 019-compressor air suction mouth 01-2 simultaneously.
E. refrigeration increases the enthalpy pattern: under high ambient temperature, magnetic valve 017 is opened, magnetic valve 018 cuts out, and refrigerant circulation is from exhaust outlet of compressor 01-3-four-way change-over valve 02-outdoor heat exchanger 03-check valve 04 capillary 05 flash vessel 010-check valve 011-capillary 012-indoor heat exchanger 015-four-way change-over valve 02-compressor air suction mouth 01-2.Gas refrigerant-check valve 016-magnetic valve 017-compressor intermediate pressure interface 01-1 in the flash vessel 010 realizes that the injection of part cold-producing medium increases enthalpy simultaneously.
F. heat and increase the enthalpy pattern: under low ambient temperature, magnetic valve 017 is opened, magnetic valve 08, magnetic valve 018 are closed, and refrigerant circulation is from exhaust outlet of compressor 01-3-four-way change-over valve 02-indoor heat exchanger 015-check valve 014-capillary 013-flash vessel 010-check valve 09-capillary 06-outdoor heat exchanger 03-four-way change-over valve 02-compressor air suction mouth 01-2.Gas refrigerant-check valve 016-magnetic valve 017-compressor intermediate pressure interface 01-1 in the flash vessel 010 realizes that the injection of part cold-producing medium increases enthalpy simultaneously.
Can find out from foregoing description, the existing air-conditioning system that increases the enthalpy loop with tonifying Qi only has single tonifying Qi loop, this just so that existing air-conditioning system in the lower situation of temperature, because single tonifying Qi loop, the gas flow that adds flash evaporation in the situation of ultralow temperature is restricted, can not satisfy well under the environment of ultralow temperature so that unit heats required internal circulating load, delivery temperature also can not get effective inhibition simultaneously, can't guarantee the stable operation under the limiting condition, so that still there is the risk that can't normally move in air-conditioning system under the worst cold case environment.
Can't guarantee air-conditioner normal problem of moving under low temperature environment for single tonifying Qi loop in the correlation technique, not yet propose at present effective solution.
The utility model content
Main purpose of the present utility model is to provide a kind of air-conditioner, to solve the problem that air-conditioner can't normally move in the prior art under low temperature environment.
To achieve these goals, according to the utility model, provide a kind of air-conditioner, having comprised: compressor has suction end, exhaust end and tonifying Qi end; Cross valve has first interface, the second interface, the 3rd interface and the 4th interface, and wherein, first interface is connected with the exhaust end of compressor, and the second interface is connected with the suction end of compressor; Indoor heat exchanger, first end is connected with the 3rd interface of cross valve; Outdoor heat exchanger, first end is connected with the 4th interface of cross valve; Reservoir is connected with the second end of outdoor heat exchanger by the first liquid pipe, is connected with the second end of indoor heat exchanger by the second liquid pipe, is connected with the tonifying Qi end of compressor by tracheae; The first throttle element is arranged on the first liquid pipe; The second section fluid element is arranged on the second liquid pipe; And the 3rd restricting element, be connected between the tonifying Qi end of first node and compressor, wherein, first node is the node between second section fluid element and the indoor heat exchanger on the second liquid pipe.
Further, air-conditioner also comprises: the first magnetic valve is arranged on the tracheae; And second magnetic valve, be connected between the 3rd restricting element and the first node.
Further, air-conditioner also comprises: the first temperature-sensing element, be arranged on the tracheae, and between the first magnetic valve and reservoir; The second temperature-sensing element is arranged on the first liquid pipe, and between first throttle element and reservoir; The 3rd temperature-sensing element is arranged on the second liquid pipe, and between second section fluid element and reservoir; The 4th temperature-sensing element is for detection of the suction temperature of compressor; The 5th temperature-sensing element is for detection of evaporating temperature or the condensation temperature of indoor heat exchanger; 6th sense temperature element is for detection of evaporating temperature or the condensation temperature of outdoor heat exchanger; And controller, all be connected with the first temperature-sensing element, the second temperature-sensing element, the 3rd temperature-sensing element, the 4th temperature-sensing element, the 5th temperature-sensing element and 6th sense temperature element, be used for regulating according to the detected temperatures of each temperature-sensing element the aperture of first throttle element and second section fluid element.
Further, air-conditioner also comprises: the 7th temperature-sensing element is arranged on the outdoor heat exchanger, for detection of outdoor environment temperature, wherein, controller is connected with the 7th temperature-sensing element, is used for controlling according to the height of outdoor environment temperature the on off state of the first magnetic valve and the second magnetic valve.
Further, air-conditioner also comprises: gas-liquid separator, and the inlet end of gas-liquid separator is connected with the second interface, and the exhaust end of gas-liquid separator is connected with the suction end of compressor.
Further, the first throttle element comprises the first electric expansion valve, and the second section fluid element comprises the second electric expansion valve, and the 3rd restricting element comprises capillary.
Further, reservoir is two-way flow three control reservoirs, and the first distance is more than or equal to the first predeterminable range and be less than or equal to the second predeterminable range, second distance is more than or equal to the first predeterminable range and be less than or equal to the second predeterminable range, the 3rd distance is less than the 3rd predeterminable range, wherein, the first distance is the vertical range between bottom the end that is connected with reservoir of the first liquid pipe and the reservoir, second distance is the vertical range between the end that is connected with reservoir of the second liquid pipe and the reservoir bottom, the end that the 3rd distance is connected with reservoir for tracheae and the vertical range between the reservoir top.
By the utility model, adopt the air-conditioner that comprises following structure: compressor has suction end, exhaust end and tonifying Qi end; Cross valve has first interface, the second interface, the 3rd interface and the 4th interface, and wherein, first interface is connected with the exhaust end of compressor, and the second interface is connected with the suction end of compressor; Indoor heat exchanger, first end is connected with the 3rd interface of cross valve; Outdoor heat exchanger, first end is connected with the 4th interface of cross valve; Reservoir is connected with the second end of outdoor heat exchanger by the first liquid pipe, is connected with the second end of indoor heat exchanger by the second liquid pipe, is connected with the tonifying Qi end of compressor by tracheae; The first throttle element is arranged on the first liquid pipe; The second section fluid element is arranged on the second liquid pipe; And the 3rd restricting element, be connected between the tonifying Qi end of first node and compressor, wherein, first node is the node between second section fluid element and the indoor heat exchanger on the second liquid pipe.By the connecting pipeline that comprises the 3rd restricting element is set between the first node of the second liquid pipe and compressor tonifying Qi end, realized for air-conditioner a new tonifying Qi branch road being set on the basis of existing air-conditioner, corresponding pipeline in this tonifying Qi branch road and the air-conditioner and parts have formed the second tonifying Qi loop of air-conditioner, air-conditioner can carry out tonifying Qi by this second tonifying Qi loop and increase enthalpy under ultra-low temperature surroundings, the drawback of having avoided the gas flow of flash evaporation in the ultralow temperature situation to be restricted, guarantee that unit heats required internal circulating load, solved the problem that single tonifying Qi loop in the prior art can't guarantee air-conditioner normal operation under low temperature environment, and then reached the operational effect that guarantees air-conditioner, improve unit operation stability and reliability.
Description of drawings
The accompanying drawing that consists of the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic diagram according to the air-conditioning system of correlation technique;
Fig. 2 is the schematic diagram according to the air-conditioner of the utility model embodiment;
Fig. 3 is the schematic diagram that the refrigerant when adopting the air-conditioner of the utility model embodiment to carry out common refrigeration flows to;
Fig. 4 is the schematic diagram that the refrigerant when adopting the air-conditioner of the utility model embodiment to carry out single tonifying Qi refrigeration flows to;
Fig. 5 is the schematic diagram that the refrigerant when adopting the air-conditioner of the utility model embodiment to carry out common heating flows to;
Fig. 6 is the schematic diagram that the refrigerant when adopting the air-conditioner of the utility model embodiment to carry out single tonifying Qi to heat flows to;
Fig. 7 adopts the air-conditioner of the utility model embodiment to carry out the schematic diagram that the refrigerant of giving young employees remedial-courses in general knowledge and vocational skills gas when heating flows to; And
Fig. 8 is the flow chart according to the gas supply control method of the utility model embodiment.
The specific embodiment
Need to prove that in the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
The utility model embodiment provides a kind of air-conditioner, below air-conditioner that the utility model embodiment is provided be specifically introduced:
Fig. 2 is the schematic diagram according to the air-conditioner of the utility model embodiment, as shown in Figure 2, S1 represents the indoor set part, S2 represents outdoor machine part, and the air-conditioner of this embodiment comprises: compressor 1, cross valve 2, outdoor heat exchanger 3, reservoir 5, indoor heat exchanger 7, the first electric expansion valve 4, the second electric expansion valve 6 and capillary 13.
Particularly, cross valve 2 comprises first interface (D interface), the second interface (S interface), the 3rd interface (E interface) and the 4th interface (C interface), wherein, first interface is connected with the exhaust end of compressor 1, and the second interface is connected with the suction end of compressor 1; The first end of indoor heat exchanger 7 is connected with the 3rd interface of cross valve 2 by the second stop valve 15; The first end of outdoor heat exchanger 3 is connected with the 4th interface of cross valve 2; Reservoir 5 is connected with the second end of outdoor heat exchanger 3 by the first liquid pipe, is connected with the second end of indoor heat exchanger 7 by the second liquid pipe, is connected with the tonifying Qi end of compressor 1 by tracheae; The first electric expansion valve 4 is for being arranged on the restricting element on the first liquid pipe; The second electric expansion valve 6 is for being arranged on the restricting element on the second liquid pipe; Capillary 13 is the restricting element between the tonifying Qi end that is connected to first node and compressor 1, and wherein, first node is arranged on the second liquid pipe, and between the second electric expansion valve 6 and indoor heat exchanger 7; Wherein, the tonifying Qi end of connection compressor 1 and the pipeline of reservoir 5 form the first tonifying Qi branch road of compressor 1, and the tonifying Qi end of connection compressor 1 and the pipeline of capillary 13 form the second tonifying Qi branch road of compressor 1.
Comprise connecting pipeline capillaceous by between the first node of the second liquid pipe and compressor tonifying Qi end, arranging, realized for air-conditioner a new tonifying Qi branch road being set on the basis of existing air-conditioner, corresponding pipeline in this tonifying Qi branch road and the air-conditioner and parts have formed the second tonifying Qi loop of air-conditioner, air-conditioner can carry out tonifying Qi by this second tonifying Qi loop and increase enthalpy under ultra-low temperature surroundings, the drawback of having avoided the gas flow of flash evaporation in the ultralow temperature situation to be restricted, guarantee that unit heats required internal circulating load, solved the problem that single tonifying Qi loop in the prior art can't guarantee air-conditioner normal operation under low temperature environment, and then reached the operational effect that guarantees air-conditioner, improve unit operation stability and reliability.
Further, the air-conditioner that the utility model embodiment provides also comprises gas-liquid separator 8, this gas-liquid separator 8 is arranged between compressor 1 and the cross valve 2, particularly, the inlet end of gas-liquid separator 8 is connected with the second interface of cross valve 2, and the exhaust end of gas-liquid separator 8 is connected with the suction end of compressor 1.
By between the second interface of the suction end of compressor and cross valve, gas-liquid separator being set, avoided liquid coolant to enter the accident-prone drawback of compressor displacement that compressor causes, reached and improved the stability of cooler compressor and the effect of security.
Wherein, in the utility model embodiment, reservoir 5 belongs to two-way flow three control formulations, and inlet/outlet pipe (the first liquid pipe and the second liquid pipe) extends the bottom of reservoir, guarantees that the working medium that inlet/outlet pipe flows is liquid condition; The import that gas goes out pipe is stretched into inner length and is less than or equal to 10% of reservoir height from reservoir 5 tops, in order to avoid liquid refrigerant flows out from this mouth of pipe.
Further, the air-conditioner of the utility model embodiment also comprises the first magnetic valve 12, the second magnetic valve 11, controller (not shown), the first temperature temperature-sensitive bag 16, the second temperature temperature-sensitive bag 17, the 3rd temperature temperature-sensitive bag 18, the 4th temperature temperature-sensitive bag 10, the 5th temperature temperature-sensitive bag 19, the 6th temperature temperature-sensitive bag 20, the 7th temperature temperature-sensitive bag 21, particularly, the first magnetic valve 12 is arranged on the tracheae; The second magnetic valve 11 is connected between capillary 13 and the first node; The first temperature temperature-sensitive bag 16 is arranged on the tracheae, and between the first magnetic valve 12 and reservoir 5; The second temperature temperature-sensitive bag 17 is arranged on the first liquid pipe, and between the first electric expansion valve 4 and reservoir 5; The 3rd temperature temperature-sensitive bag 18 is arranged on the second liquid pipe, and between the second electric expansion valve 6 and reservoir 5; The 4th temperature temperature-sensitive bag 10 is arranged on the suction end of compressor 1, for detection of the suction temperature of compressor; The 5th temperature temperature-sensitive bag 19 is arranged on the second liquid pipe, and near indoor heat exchanger 7, for detection of evaporating temperature or the condensation temperature of indoor heat exchanger; The 6th temperature temperature-sensitive bag 20 is arranged on the first liquid pipe, and near outdoor heat exchanger 3, for detection of evaporating temperature or the condensation temperature of outdoor heat exchanger; The 7th temperature temperature-sensitive bag 21 is arranged on the outdoor heat exchanger 3, for detection of outdoor environment temperature.Wherein, controller all is connected with the signal output part of each temperature temperature-sensitive bag, being used for coming on off state to the first magnetic valve 12 and the second magnetic valve 11 according to the temperature value that each temperature-sensing element detects, and the concrete aperture size of the first electric expansion valve 4 and the second electric expansion valve 6 is regulated.
Particularly, can control in such a way the on off state of the first magnetic valve 12 and the second magnetic valve 11:
At first, the outdoor environment temperature that controller detects according to the 7th temperature temperature-sensitive bag 21 and the magnitude relationship of the first preset temperature, the second preset temperature and the 3rd preset temperature are determined concrete refrigeration or the heating mode of air-conditioner, wherein, the first preset temperature is greater than the second preset temperature, the second preset temperature is greater than the 3rd preset temperature, when outdoor environment temperature during greater than the first preset temperature, air-conditioner is in tonifying Qi refrigeration mode (that is, middle cooling refrigeration circulation); When outdoor environment temperature was less than or equal to the first preset temperature, air-conditioner was in conventional kind of refrigeration cycle pattern; When outdoor environment temperature during more than or equal to the second preset temperature and less than the first preset temperature, air-conditioner is in routine and heats circulation pattern; When outdoor environment temperature during less than the second preset temperature and more than or equal to the 3rd preset temperature, air-conditioner is in single tonifying Qi heating mode (that is, single spraying gas heats circulation); When outdoor environment temperature during less than the 3rd preset temperature, air-conditioner is in giving young employees remedial-courses in general knowledge and vocational skills gas heating mode (that is, two jet circulations that heat).
Secondly, when air-conditioner is in the tonifying Qi refrigeration mode, control that the first magnetic valve is opened, the second closed electromagnetic valve; When air-conditioner is in conventional kind of refrigeration cycle pattern, control the first magnetic valve and the second magnetic valve all cuts out; When air-conditioner is in routine and heats circulation pattern, control the first magnetic valve and the second magnetic valve all cuts out; When air-conditioner is in single tonifying Qi heating mode, control that the first magnetic valve is opened, the second closed electromagnetic valve; When air-conditioner is in giving young employees remedial-courses in general knowledge and vocational skills gas heating mode, control the first magnetic valve and the second magnetic valve is all opened.
Regulate in such a way the concrete aperture size of the first electric expansion valve 4 and the second electric expansion valve 6:
At first, the outdoor environment temperature that detects according to the 7th temperature temperature-sensitive bag 21 and the magnitude relationship of the first preset temperature, the second preset temperature and the 3rd preset temperature are determined concrete refrigeration or the heating mode of air-conditioner.
Secondly, the aperture of regulating the first electric expansion valve 4 and the second electric expansion valve 6 according to concrete refrigeration or the heating mode of air-conditioner, particularly, when air-conditioner is in the tonifying Qi refrigeration mode, the aperture of regulating the second electric expansion valve according to the suction superheat in when refrigeration, and the aperture of regulating the first electric expansion valve under the acting in conjunction of the suction superheat during according to refrigeration and the tonifying Qi degree of superheat; When air-conditioner is in conventional kind of refrigeration cycle pattern, the aperture that suction superheat during according to refrigeration is regulated the second electric expansion valve, and the aperture of controlling the first electric expansion valve opens fully,, regulates the maximum opening of aperture to the first electric expansion valve of the first electric expansion valve that is; Wherein, suction superheat during refrigeration refers to the difference of the detected temperatures of the detected temperatures of the 4th temperature-sensing element 10 and the 5th temperature-sensing element 19, and the tonifying Qi degree of superheat during refrigeration refers to the difference of the detected temperatures of the detected temperatures of the first temperature-sensing element 16 and the second temperature-sensing element 17.When air-conditioner is in routine and heats circulation pattern, the aperture that suction superheat when heating is regulated the first electric expansion valve, and the aperture of controlling the second electric expansion valve opens fully,, regulates the maximum opening of aperture to the second electric expansion valve of the second electric expansion valve that is; When air-conditioner is in single tonifying Qi heating mode, the aperture that the suction superheat when heating is regulated the first electric expansion valve, and the aperture of regulating the second electric expansion valve under the acting in conjunction of the suction superheat when heating and the tonifying Qi degree of superheat; When air-conditioner was in giving young employees remedial-courses in general knowledge and vocational skills gas heating mode, the regulation mode for two electric expansion valves when being in single tonifying Qi heating mode with air-conditioner was identical.Wherein, the tonifying Qi degree of superheat when heating refers to the difference of the detected temperatures of the detected temperatures of the first temperature-sensing element 16 and the 3rd temperature-sensing element 18, and the suction superheat when heating refers to the difference of the detected temperatures of the detected temperatures of the 4th temperature-sensing element 10 and 6th sense temperature element 20.
More specifically, when according to suction superheat and/or the tonifying Qi degree of superheat aperture size of electric expansion valve being regulated, according to formula K
i=(Δ T
i-T
0i) * A
iCalculate aperture K corresponding to the degree of superheat
i, wherein, i is positive integer, Δ T
iSuction superheat or the tonifying Qi degree of superheat that the expression air-conditioner calculates when being in different refrigeration or heating mode, T
0iThe expression goal-selling degree of superheat, A
iThe default correction factor of expression illustrates, as Δ T
iDuring for the suction superheat in when refrigeration, the aperture of then regulating the second electric expansion valve according to the aperture corresponding with suction superheat when refrigeration that calculate, by that analogy, be implemented under the different operational modes, respectively suction superheat and/or tonifying Qi degree of superheat substitution formula are calculated, and regulated the aperture of corresponding electric expansion valve according to the result who calculates.Wherein, for the corresponding concrete goal-selling degree of superheat T of each concrete suction superheat or the tonifying Qi degree of superheat in the formula
0iAnd concrete default correction factor A
iSet T according to concrete air-conditioner system
0iIn each occurrence can be identical also can be differing from each other, A
iIn each occurrence can be identical also can be differing from each other.Further, when the aperture of electric expansion valve is regulated, if the aperture K that calculates
iPositive number, then according to the aperture K that calculates
iIncrease the aperture of restricting element; If the aperture K that calculates
iNegative, then according to the aperture that calculates | K
i| reduce the aperture of restricting element.Wherein, can also carry out Primary regulation by the certain control interval in every interval, control interval can according to circumstances be arranged between the 20s-1min, also can be set to At All Other Times interval.
Wherein, when under refrigeration mode, outdoor environment temperature is less than or equal to the first preset temperature, when the first magnetic valve 12 and the second magnetic valve 11 were all closed, air-conditioner was in common refrigerating state, under this state, refrigerant flows to shown in Figure 3, particularly, as shown in Figure 3, the first electric expansion valve 4 is opened to maximum; Behind compressor 1 high temperature and high pressure gas process cross valve 2 out, be condensed into highly pressurised liquid through outdoor heat exchanger 3, highly pressurised liquid enters reservoir 5 after through the first electric expansion valve 4,6 throttlings enter indoor heat exchanger 7 evaporation endothermics through the second electric expansion valve again, low-pressure low-temperature gas is got back to compressor 1 air entry through behind the gas-liquid separator 8, and this is conventional process of refrigerastion.At this moment, the second electric expansion valve 6 is regulated by second degree of superheat (suction superheat).
When under refrigeration mode, outdoor environment temperature is greater than the first preset temperature, the first magnetic valve 12 is opened, when the second magnetic valve 11 cuts out, air-conditioner is in single tonifying Qi refrigerating state, under this state, refrigerant flows to shown in Figure 4, particularly, as shown in Figure 4, behind compressor 1 high temperature and high pressure gas process cross valve 2 out, be condensed into highly pressurised liquid through outdoor heat exchanger 3, highly pressurised liquid enters reservoir 5 after through 4 throttlings of the first electric expansion valve, and 6 throttlings enter indoor heat exchanger 7 evaporation endothermics to the reservoir bottom liquid through the second electric expansion valve again, and low-pressure low-temperature gas is got back to compressor 1 air entry through behind the gas-liquid separator 8; And the flash gas at reservoir 5 tops enters the gas supplementing opening of compressor 1 and compresses from the high pressure chest that enters again compressor 1 behind the low-pressure stage exhaust combination cooling in compressor 1 low pressure chamber through the first magnetic valve 12; Can so that air-conditioner system satisfies the refrigeration under higher environment temperature, increase simultaneously refrigerating capacity by this circulation.This moment first, electric expansion valve 4 was regulated by first degree of superheat (the tonifying Qi degree of superheat), and the second electric expansion valve 6 is regulated by second degree of superheat (suction superheat).
When under heating mode, outdoor environment temperature is more than or equal to the second preset temperature, when the first magnetic valve 12 and the second magnetic valve 11 are all closed, air-conditioner is in common heating under the state, under this state, refrigerant flows to shown in Figure 5, particularly, as shown in Figure 5, the second electric expansion valve 6 is opened to maximum, becomes highly pressurised liquid from compressor 1 high pressure-temperature gas out through indoor heat exchanger 7, and highly pressurised liquid enters reservoir 5 through the second electric expansion valve 6,4 throttlings enter outdoor heat exchanger 3 evaporation of absorbing heat through the first electric expansion valve again, from outdoor heat exchanger 3 low-temp low-pressure gas out through entering the air entry of compressor 1 behind the gas-liquid separator 8.This moment first, electric expansion valve 4 was regulated by the 4th degree of superheat (suction superheat).
When under heating mode, outdoor environment temperature is less than the second preset temperature and more than or equal to the 3rd preset temperature, the first magnetic valve 12 is opened and the second magnetic valve 11 when closing, air-conditioner is in single tonifying Qi and heats under the state, under this state, refrigerant flows to shown in Figure 6, particularly, as shown in Figure 6, become highly pressurised liquid from compressor 1 high pressure-temperature gas out through indoor heat exchanger 7, highly pressurised liquid enters reservoir 5 after through 6 throttlings of the second electric expansion valve, and the saturated gas on reservoir 5 tops enters the compressor spout after by the first magnetic valve 12 to carry out tonifying Qi and increase enthalpy; Saturated little excessively cold liquid of reservoir bottom enters outdoor heat exchanger 3 evaporation of absorbing heat through 4 throttlings of the first electric expansion valve are laggard again, from outdoor heat exchanger 3 low-temp low-pressure gas out through entering the air entry of compressor 1 behind the gas-liquid separator 8, this moment, the second magnetic valve 11 was in closed condition, the first electric expansion valve 4 the 4th degree of superheat (suction superheat) is regulated, and the second electric expansion valve 6 is regulated by the 3rd degree of superheat (the tonifying Qi degree of superheat).
When under heating mode, outdoor environment temperature is less than the 3rd preset temperature, when the first magnetic valve 12 and the second magnetic valve 11 are all opened, air-conditioner is in giving young employees remedial-courses in general knowledge and vocational skills gas and heats under the state, under this state, refrigerant flows to shown in Figure 7, particularly, as shown in Figure 7, become highly pressurised liquid from compressor 1 high pressure-temperature gas out through indoor heat exchanger 7, highly pressurised liquid one tunnel enters reservoir 5 after through 6 throttlings of the second electric expansion valve, and another road enters the compressor spout after through the second magnetic valve 11 and capillary 13 throttlings and carries out tonifying Qi and increase enthalpy after out mix through the saturated gas of the first magnetic valve 12 at reservoir 5 tops; Saturated little excessively cold liquid of reservoir bottom enters outdoor heat exchanger 3 evaporation of absorbing heat through 4 throttlings of the first electric expansion valve are laggard again, from entering the air entry of compressor 1 after outdoor heat exchanger 3 low-temp low-pressure gas out passes through gas-liquid separator 8.This moment first, electric expansion valve 4 was regulated by the 4th degree of superheat (suction superheat), and the second electric expansion valve 6 is regulated by the 3rd degree of superheat (the tonifying Qi degree of superheat).
Further, the air-conditioner of the utility model embodiment also comprises the first stop valve 14 and the second stop valve 15, wherein, the first stop valve 14 is arranged on the liquid pipe between reservoir 5 and the indoor heat exchanger 7, the second stop valve 15 is arranged on the connecting pipe between indoor heat exchanger 7 and the cross valve 2, by the first stop valve 14 and the second stop valve 15 are set, has realized when air conditioner room unit is overhauled, can close the refrigerant pipe in indoor set and the external world, to reach the effect of accurate maintenance.
Further specify the air-conditioner of the utility model embodiment below in conjunction with the gas supply control method of the air-conditioner that is applied to the utility model embodiment, this gas supply control method can be carried out by the air-conditioner that the utility model embodiment foregoing provides, particularly:
Fig. 8 is the flow chart according to the gas supply control method of the utility model embodiment, and as shown in Figure 8, this gas supply control method comprises the steps S801 and step S803:
S801: the first tonifying Qi branch road conducting of control air-conditioner provides the first tonifying Qi to compressor, or the cut-off of control air-conditioner the first tonifying Qi branch road stops to provide the first tonifying Qi to compressor, wherein, the first tonifying Qi branch road comprises the pipeline of the reservoir 5 of the tonifying Qi end of the compressor 1 that is communicated with air-conditioner and air-conditioner;
S803: the second tonifying Qi branch road conducting of control air-conditioner provides the second tonifying Qi to compressor, or the cut-off of control air-conditioner the second tonifying Qi branch road stops to provide the second tonifying Qi to compressor, wherein, the second tonifying Qi branch road comprises the tonifying Qi end that is communicated with compressor 1 and the pipeline of the 3rd restricting element.
By conducting or the cut-off of controlling the second tonifying Qi branch road, realized that under ultra-low temperature surroundings air-conditioner can carry out tonifying Qi by this second tonifying Qi branch road and increase enthalpy, the drawback of having avoided the gas flow of flash evaporation in the ultralow temperature situation to be restricted, guarantee that unit heats required internal circulating load, solved the problem that single tonifying Qi loop in the prior art can't guarantee air-conditioner normal operation under low temperature environment, and then reached the operational effect that guarantees air-conditioner, improve unit operation stability and reliability.
Particularly, by air-conditioner detected outdoor environment temperature and preset temperature under different operational modes are compared the on off state of relatively controlling the first magnetic valve 12 and the second magnetic valve 11, wherein, main relatively outdoor environment temperature and the first preset temperature, the magnitude relationship of the second preset temperature and the 3rd preset temperature, wherein, the first preset temperature is greater than the second preset temperature, the second preset temperature is greater than the 3rd preset temperature, the first preset temperature is to determine that air-conditioner carries out common refrigeration and adopts the first tonifying Qi branch road to carry out the boundary temperature spot of single tonifying Qi refrigeration, the second preset temperature is to determine that air-conditioner carries out commonly heating and adopt the first tonifying Qi branch road to carry out the boundary temperature spot that single tonifying Qi heats, and the 3rd preset temperature is to determine that controller adopts the first tonifying Qi branch road to carry out that single tonifying Qi heats and adopt simultaneously the first tonifying Qi branch road, the second tonifying Qi branch road carries out the boundary temperature spot that giving young employees remedial-courses in general knowledge and vocational skills gas heats.If outdoor environment temperature is greater than the first preset temperature under refrigeration mode, control then that the first magnetic valve 12 is opened and the second magnetic valve 11 cuts out; If outdoor environment temperature is less than or equal to the first preset temperature under refrigeration mode, then control the first magnetic valve 12 and the second magnetic valve 11 all cuts out; If outdoor environment temperature is more than or equal to the second preset temperature under heating mode, then control the first magnetic valve 12 and the second magnetic valve 11 all cuts out; If outdoor environment temperature is less than the second preset temperature and more than or equal to the 3rd preset temperature under heating mode, control then that the first magnetic valve 12 is opened and the second magnetic valve 11 cuts out; If outdoor environment temperature is less than the 3rd preset temperature under heating mode, then control the first magnetic valve 12 and the second magnetic valve 11 is all opened.
By being detected the tonifying Qi degree of superheat or the suction superheat that calculate lower of different operational modes, air-conditioner presets the aperture that the first electric expansion valve 4 and the second electric expansion valve 6 are controlled in processing, wherein, first degree of superheat is the temperature gap of the first temperature temperature-sensitive bag 16 and the second temperature temperature-sensitive bag 17, second degree of superheat is the temperature gap of the 4th temperature temperature-sensitive bag 10 and the 5th temperature temperature-sensitive bag 19, the 3rd degree of superheat is the temperature gap of the first temperature temperature-sensitive bag 16 and the 3rd temperature temperature-sensitive bag 18, the temperature gap of the 4th degree of superheat the 4th temperature temperature-sensitive bag 10 and the 6th temperature temperature-sensitive bag 20.
When air-conditioner is in non-tonifying Qi refrigeration mode, control the first electric expansion valve 4 and open to maximum opening, and regulate the aperture of the second electric expansion valve 6 by second degree of superheat (suction superheat during refrigeration); The aperture of when air-conditioner is in the tonifying Qi refrigeration mode, regulating the first electric expansion valve 4 by the acting in conjunction of first degree of superheat (the tonifying Qi degree of superheat during refrigeration) and second degree of superheat (suction superheat during refrigeration), and the aperture of regulating the second electric expansion valve 6 by second degree of superheat (suction superheat during refrigeration); When air-conditioner is in non-tonifying Qi heating mode, regulate the aperture of the first electric expansion valve 4 by the 3rd degree of superheat (suction superheat when heating), and control the second electric expansion valve 6 and open to maximum opening; When air-conditioner is in single tonifying Qi heating mode, the aperture of regulating the first electric expansion valve 4 by the 3rd degree of superheat (suction superheat when heating), and the aperture of regulating the second electric expansion valve 6 by the acting in conjunction of the 3rd degree of superheat (suction superheat when heating) and the 4th degree of superheat (the tonifying Qi degree of superheat when heating).Particularly, according to formula K
i=(Δ T
i-T
0i) * A
i, i=1,2,3,4 calculate aperture K corresponding to the degree of superheat
i, wherein, Δ T
iThe expression degree of superheat, T
0iThe expression goal-selling degree of superheat, A
iThe default correction factor of expression; That is, as Δ T
iBe the first degree of superheat Δ T
1, T
0iBe the first goal-selling degree of superheat T
01, A
iBe the first default correction factor A
1The time, calculate and the first degree of superheat Δ T
1Corresponding aperture K
1, then according to the aperture K that calculates
1Regulate the aperture of the first electric expansion valve 4, by that analogy, be implemented under the different operational modes, respectively suction superheat and/or tonifying Qi degree of superheat substitution formula are calculated, and regulated the aperture of corresponding electric expansion valve according to the result who calculates; Wherein, each goal-selling degree of superheat T
01, T
02, T
03And T
04And each default correction factor A
1, A
2, A
3And A
4T can be set according to concrete air-conditioner system
01, T
02, t
03And t
04Can be identical also can be differing from each other, A
1, A
2, A
3And A
4Can be identical also can be differing from each other.Further, when the aperture of electric expansion valve is regulated, if the aperture K that calculates
iPositive number, then according to the aperture K that calculates
iIncrease the aperture of restricting element; If the aperture K that calculates
iNegative, then according to the aperture that calculates | K
i| reduce the aperture of restricting element.Wherein, when the aperture of electric expansion valve is regulated, can carry out Primary regulation by the certain control interval in every interval, control interval can according to circumstances be arranged between the 20s-1min, also can be set to At All Other Times interval.
From above description, can find out, the utility model has adopted the system of reservoir and second throttle, by controlling the aperture of two restricting elements (the first electric expansion valve 4 and the second electric expansion valve 6), so that reservoir not only can be used as reservoir but also can be used as flash vessel, so that unit is simple in structure, reduce cost, adopt electronic expansion valve controls can also guarantee more stable and high effective operation of system.And the giving young employees remedial-courses in general knowledge and vocational skills air circuit of throttling in parallel before the employing throttling so that unit under ultralow environment temperature and the little situation of flash vessel shwoot amount increased air compensation, can establishment excessive discharge temperature, increased the fan-out capability of unit.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (7)
1. an air-conditioner is characterized in that, comprising:
Compressor (1) has suction end, exhaust end and tonifying Qi end;
Cross valve (2) has first interface, the second interface, the 3rd interface and the 4th interface, and wherein, described first interface is connected with the exhaust end of described compressor (1), and described the second interface is connected with the suction end of described compressor (1);
Indoor heat exchanger (7), first end is connected with the 3rd interface of described cross valve (2);
Outdoor heat exchanger (3), first end is connected with the 4th interface of described cross valve (2);
Reservoir (5) is connected by second end of the first liquid pipe with described outdoor heat exchanger (3), is connected by second end of the second liquid pipe with described indoor heat exchanger (7), is connected by the tonifying Qi end of tracheae with described compressor (1);
The first throttle element is arranged on described the first liquid pipe;
The second section fluid element is arranged on described the second liquid pipe; And
The 3rd restricting element is connected between the tonifying Qi end of first node and described compressor (1), and wherein, described first node is the node between described the above second section fluid element of the second liquid pipe and the described indoor heat exchanger (7).
2. air-conditioner according to claim 1 is characterized in that, described air-conditioner also comprises:
The first magnetic valve (12) is arranged on the described tracheae; And
The second magnetic valve (11) is connected between described the 3rd restricting element and the described first node.
3. air-conditioner according to claim 2 is characterized in that, described air-conditioner also comprises:
The first temperature-sensing element (16) is arranged on the described tracheae, and is positioned between described the first magnetic valve (12) and the described reservoir (5);
The second temperature-sensing element (17) is arranged on described the first liquid pipe, and is positioned between described first throttle element and the described reservoir (5);
The 3rd temperature-sensing element (18) is arranged on described the second liquid pipe, and is positioned between described second section fluid element and the described reservoir (5);
The 4th temperature-sensing element (10) is for detection of the suction temperature of described compressor (1);
The 5th temperature-sensing element (19) is for detection of evaporating temperature or the condensation temperature of described indoor heat exchanger (7);
6th sense temperature element (20) is for detection of evaporating temperature or the condensation temperature of described outdoor heat exchanger (3); And
Controller, all be connected with described the first temperature-sensing element (16), described the second temperature-sensing element (17), described the 3rd temperature-sensing element (18), described the 4th temperature-sensing element (10), described the 5th temperature-sensing element (19) and described 6th sense temperature element (20), be used for the aperture of regulating described first throttle element and described second section fluid element according to the detected temperatures of each temperature-sensing element.
4. air-conditioner according to claim 3 is characterized in that, described air-conditioner also comprises:
The 7th temperature-sensing element (21) is arranged on the described outdoor heat exchanger (3), for detection of outdoor environment temperature,
Wherein, described controller is connected with described the 7th temperature-sensing element (21), is used for controlling according to the height of described outdoor environment temperature the on off state of described the first magnetic valve (12) and described the second magnetic valve (11).
5. air-conditioner according to claim 1 is characterized in that, described air-conditioner also comprises:
Gas-liquid separator (8), the inlet end of described gas-liquid separator (8) is connected with described the second interface, and the exhaust end of gas-liquid separator (8) is connected with the suction end of described compressor (1).
6. air-conditioner according to claim 1 is characterized in that, described first throttle element comprises the first electric expansion valve (4), and described second section fluid element comprises the second electric expansion valve (6), and described the 3rd restricting element comprises capillary (13).
7. air-conditioner according to claim 1, it is characterized in that, described reservoir (5) is two-way flow three control reservoirs, and the first distance is more than or equal to the first predeterminable range and be less than or equal to the second predeterminable range, second distance is more than or equal to described the first predeterminable range and be less than or equal to described the second predeterminable range, the 3rd distance is less than the 3rd predeterminable range, wherein, the end that described the first distance is connected with described reservoir (5) for described the first liquid pipe and the vertical range between described reservoir (5) bottom, described second distance is the vertical range between the end that is connected with described reservoir (5) of described the second liquid pipe and described reservoir (5) bottom, the end that described the 3rd distance is connected with described reservoir (5) for described tracheae and the vertical range between described reservoir (5) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220588070 CN202869070U (en) | 2012-11-08 | 2012-11-08 | Air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220588070 CN202869070U (en) | 2012-11-08 | 2012-11-08 | Air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202869070U true CN202869070U (en) | 2013-04-10 |
Family
ID=48035784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220588070 Expired - Lifetime CN202869070U (en) | 2012-11-08 | 2012-11-08 | Air conditioner |
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| Country | Link |
|---|---|
| CN (1) | CN202869070U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807917A (en) * | 2012-11-08 | 2014-05-21 | 珠海格力电器股份有限公司 | Air conditioner and air supply control method applied to same |
| CN105202818A (en) * | 2015-09-28 | 2015-12-30 | 深圳麦克维尔空调有限公司 | Flash vessel and heat exchange system with same |
| CN106568225A (en) * | 2016-10-26 | 2017-04-19 | 广东美芝制冷设备有限公司 | Compressor and refrigeration device with same |
| CN107631525A (en) * | 2017-07-31 | 2018-01-26 | 珠海格力电器股份有限公司 | Two-stage compressor air conditioning system and control method and device thereof |
| CN110285535A (en) * | 2019-06-24 | 2019-09-27 | 珠海格力电器股份有限公司 | Enthalpy increasing control method and device for air conditioning system |
| CN110617206A (en) * | 2019-09-16 | 2019-12-27 | 珠海格力电器股份有限公司 | Exhaust control method and device for two-stage compressor, controller and air conditioner |
-
2012
- 2012-11-08 CN CN 201220588070 patent/CN202869070U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103807917A (en) * | 2012-11-08 | 2014-05-21 | 珠海格力电器股份有限公司 | Air conditioner and air supply control method applied to same |
| CN103807917B (en) * | 2012-11-08 | 2016-10-05 | 珠海格力电器股份有限公司 | Air conditioner and air supply control method applied to same |
| CN105202818A (en) * | 2015-09-28 | 2015-12-30 | 深圳麦克维尔空调有限公司 | Flash vessel and heat exchange system with same |
| CN106568225A (en) * | 2016-10-26 | 2017-04-19 | 广东美芝制冷设备有限公司 | Compressor and refrigeration device with same |
| CN106568225B (en) * | 2016-10-26 | 2022-11-15 | 广东美芝制冷设备有限公司 | Compressor and refrigerating plant who has it |
| CN107631525A (en) * | 2017-07-31 | 2018-01-26 | 珠海格力电器股份有限公司 | Two-stage compressor air conditioning system and control method and device thereof |
| CN107631525B (en) * | 2017-07-31 | 2020-06-02 | 珠海格力电器股份有限公司 | Two-stage compressor air conditioning system and control method and device thereof |
| CN110285535A (en) * | 2019-06-24 | 2019-09-27 | 珠海格力电器股份有限公司 | Enthalpy increasing control method and device for air conditioning system |
| CN110617206A (en) * | 2019-09-16 | 2019-12-27 | 珠海格力电器股份有限公司 | Exhaust control method and device for two-stage compressor, controller and air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130410 Effective date of abandoning: 20161005 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |