CN105333656A - Air replenishing and enthalpy increasing air conditioning system and air conditioner - Google Patents
Air replenishing and enthalpy increasing air conditioning system and air conditioner Download PDFInfo
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- CN105333656A CN105333656A CN201410325137.4A CN201410325137A CN105333656A CN 105333656 A CN105333656 A CN 105333656A CN 201410325137 A CN201410325137 A CN 201410325137A CN 105333656 A CN105333656 A CN 105333656A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The embodiment of the invention discloses an air replenishing and enthalpy increasing air conditioning system and an air conditioner. The air replenishing and enthalpy increasing air conditioning system and the air conditioner are used for solving the problems that the air replenishing and enthalpy increasing air conditioning system generates periodic abnormal mechanical noise due to periodic pressure pulsation generated in an inner cavity of a compressor, and the air replenishing amount in an air replenishing loop cannot be flexibly controlled. The system comprises a compressor, the air replenishing loop and a control system. The air replenishing loop comprises a flash evaporator and a first electronic expansion valve. One end of the first electronic expansion valve is connected with an air replenishing opening of the compressor, and the other end of the first electronic expansion valve is connected with an air replenishing outlet of the flash evaporator. The first electronic expansion valve receives a control instruction sent by the control system. The opening degree of the first electronic expansion valve is adjusted according to the control instruction. The air replenishing and enthalpy increasing air conditioning system and the air conditioner are suitable for the technical field of air conditioning and refrigeration projects.
Description
Technical field
The present invention relates to air conditioning and refrigeration field of engineering technology, particularly relate to a kind of tonifying Qi and increase enthalpy air-conditioning system and air-conditioner.
Background technology
Tonifying Qi increases enthalpy air-conditioning system and is used widely because it can improve refrigerating/heating effect.Tonifying Qi increases enthalpy air-conditioning system and refers to: the common compressor in conventional air conditioning system is changed into the compressor (hereinafter referred to " compressor ") with tonifying Qi enthalpy-increasing function, and the air-conditioning system formed increase tonifying Qi loop on the basis of major loop after.
As shown in Figure 1, for a kind of tonifying Qi increases the structural representation of enthalpy air-conditioning system.Wherein, tonifying Qi loop is made up of flash vessel 11 and magnetic valve 12; Major loop comprises compressor 13, condenser (Fig. 1 is not shown), evaporimeter (Fig. 1 is not shown) etc.Two in/out mouths of flash vessel 11 are connected with major loop respectively, and the gas supplementing opening of flash vessel 11 is connected with one end of magnetic valve 12, and the other end of magnetic valve 12 is connected with the gas supplementing opening of compressor 13.
During kind of refrigeration cycle, magnetic valve 12 is in closed condition, does not perform tonifying Qi and increases enthalpy process.Heat circulation time, magnetic valve 12 is in opening, tonifying Qi increases enthalpy process and comprises: the liquid refrigerant of the low-temp low-pressure that compressor 13 exports enters flash vessel 11 by major loop, and the liquid refrigerant of part low-temp low-pressure becomes the gaseous refrigerant of low-temp low-pressure after the flash distillation effect of flash vessel 11; The gaseous refrigerant of these low-temp low-pressures enters compressor 13 by magnetic valve 12.
Because one end of magnetic valve 12 is connected with the gas supplementing opening of compressor 13, the gas supplementing opening of compressor 13 is connected with the inner chamber of compressor 13; Therefore, in following two kinds of situations, the valve body of magnetic valve 12 is directly connected with the inner chamber of compressor 13 by the gas supplementing opening of compressor 13.Wherein, these two kinds of situations are: the gas supplementing opening place of situation 1, compressor 13 is provided with check-valves, and magnetic valve 12 is in opening; Check-valves is not installed at the gas supplementing opening place of situation 2, compressor 13, and magnetic valve 12 is in opening or closed condition.
Due in the process that circulates at refrigerating/heating; the inner chamber of compressor 13 can produce periodic pressure pulsation; therefore; in above-mentioned two situations; this periodic pressure pulsation can act directly on the spool of magnetic valve 12; make the spool of magnetic valve 12 repeatedly be backed down and reset, thus cause tonifying Qi to increase enthalpy air-conditioning system generation periodically abnormal mechanical noise.In addition, magnetic valve 12 only has opening and closing function, causes controlling the air compensation in tonifying Qi loop flexibly.
Summary of the invention
Embodiments of the invention provide a kind of tonifying Qi to increase enthalpy air-conditioning system and air-conditioner; the pulse tonifying Qi that causes of the periodic pressure produced in order to avoid the inner chamber of compressor increases enthalpy air-conditioning system and produces periodically abnormal mechanical noise, and can not control the generation of the problem of the air compensation in tonifying Qi loop flexibly.
For achieving the above object, embodiments of the invention adopt following technical scheme:
First aspect, provides a kind of tonifying Qi to increase enthalpy air-conditioning system, comprising: compressor, tonifying Qi loop and control system; Described tonifying Qi loop comprises: flash vessel and the first electric expansion valve; One end of described first electric expansion valve is connected with the gas supplementing opening of described compressor, and the other end of described first electric expansion valve is connected with the gas supplementing opening of described flash vessel;
Described first electric expansion valve receives the control instruction that described control system sends;
Described first electric expansion valve regulates aperture according to described control instruction.
In conjunction with first aspect, in the embodiment that the first is possible, described control system comprises: controller, transmitter;
The target aperture of described first electric expansion valve determined on a preset condition based by described controller;
Described transmitter sends to described first electric expansion valve the control instruction comprising described target aperture;
Described first electric expansion valve regulates aperture according to described control instruction, specifically comprises:
Current aperture is adjusted to described target aperture according to described control instruction by described first electric expansion valve.
In conjunction with the first possible embodiment of first aspect, in the embodiment that the second is possible,
During kind of refrigeration cycle, be describedly pre-conditionedly: the temperature of outdoor environment is more than or equal to first threshold, and/or the condensation temperature of condenser is more than or equal to Second Threshold; Or,
Heat circulation time, be describedly pre-conditionedly: the temperature of outdoor environment is less than or equal to the 3rd threshold value.
In conjunction with the first possible embodiment of first aspect or the possible embodiment of the second, in the embodiment that the third is possible, described controller on a preset condition based, is determined the target aperture of described first electric expansion valve, is specifically comprised:
During kind of refrigeration cycle, according to the running frequency F of described compressor, the temperature T of outdoor environment
outer shroudwith the condensation temperature T of condenser pipe
condensationdetermine the target aperture of described first electric expansion valve; Or,
Heat circulation time, according to the running frequency F of described compressor and the condensation temperature T of condenser pipe
condensationdetermine the target aperture of described first electric expansion valve.
In conjunction with the third possible embodiment of first aspect, in the 4th kind of possible embodiment,
During described kind of refrigeration cycle, according to the running frequency F of described compressor, the temperature T of outdoor environment
outer shroudwith the condensation temperature T of condenser pipe
condensationdetermine the target aperture of described first electric expansion valve, specifically comprise:
During kind of refrigeration cycle, according to formula S TEP=K1 × F+K2 × T
outer shroud+ K3 × T
condensation+ K4 determines the target aperture STEP of described first electric expansion valve; Or,
Describedly heat circulation time, according to the running frequency F of described compressor and the condensation temperature T of condenser pipe
condensationdetermine the target aperture of described first electric expansion valve, specifically comprise:
Heat circulation time, according to formula S TEP=K5 × F+K6 × T
outer shroud+ K7 determines the target aperture STEP of described first electric expansion valve;
Wherein, described K1, K2, K3, K4, K5, K6, K7 are constant.
In conjunction with the 4th kind of possible embodiment of first aspect, in the 5th kind of possible embodiment,
0 < K1≤30,0 < K2≤20,0 < K3≤30 ,-100≤K4≤200; Or,
0＜K5≤30，0＜K6≤20，-100≤K7≤200。
In conjunction with first aspect, first aspect the first possible embodiment to the 5th kind of possible embodiment any one, in the 6th kind of possible embodiment,
the span of described K is [0.85,1.15];
Wherein, described P
mendfor the pressure of the gas supplementing opening of described flash vessel, described P
inhalefor the pressure of the air entry of described compressor, described P
rowfor the pressure of the exhaust outlet of described compressor.
In conjunction with first aspect, first aspect the first possible embodiment to the 6th kind of possible embodiment any one, in the 7th kind of possible embodiment, described air-conditioning system also comprises: capillary, the second electric expansion valve, condenser and evaporimeter;
Described capillary is arranged between described flash vessel and described condenser;
Described second electric expansion valve is arranged between described flash vessel and described evaporimeter.
Second aspect, provides a kind of air-conditioner, and any one tonifying Qi that comprising above-mentioned first aspect provides increases enthalpy air-conditioning system.
Based on technique scheme; the first electric expansion valve is used to replace magnetic valve of the prior art in the tonifying Qi loop of tonifying Qi increasing enthalpy air-conditioning system; spool due to the first electric expansion valve is helical structure; there is reverse locking power; therefore, it is possible to avoid the periodic pressure pulsation by the inner chamber of compressor produces to back down, and then tonifying Qi can be avoided to increase enthalpy air-conditioning system and air-conditioner generation periodically abnormal mechanical noise.Meanwhile, because the aperture of the first expansion valve can regulate, therefore, it is possible to control the air compensation in the tonifying Qi loop of tonifying Qi increasing enthalpy air-conditioning system and air-conditioner flexibly.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is that a kind of tonifying Qi of the prior art increases enthalpy air-conditioning system schematic diagram;
A kind of tonifying Qi increasing enthalpy air-conditioning system schematic diagram that Fig. 2 provides for the embodiment of the present invention;
The flow chart of the control method of a kind of tonifying Qi increasing enthalpy air-conditioning system that Fig. 3 provides for the embodiment of the present invention;
The structural representation of the control system of a kind of tonifying Qi increasing enthalpy air-conditioning system that Fig. 4 provides for the embodiment of the present invention;
The another kind of tonifying Qi increasing enthalpy air-conditioning system schematic diagram that Fig. 5 provides for the embodiment of the present invention;
The flow chart of the control method of the another kind of tonifying Qi increasing enthalpy air-conditioning system that Fig. 6 provides for the embodiment of the present invention;
The flow chart of the control method of another tonifying Qi increasing enthalpy air-conditioning system that Fig. 7 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Term "and/or" herein, being only a kind of incidence relation describing affiliated partner, can there are three kinds of relations in expression, and such as, A and/or B, can represent: individualism A, exists A and B simultaneously, these three kinds of situations of individualism B." multiple " refer to two or more.
As shown in Figure 2, a kind of tonifying Qi provided for the embodiment of the present invention increases enthalpy air-conditioning system, comprising: major loop, tonifying Qi loop and control system.Wherein, this major loop comprises compressor 21; This tonifying Qi loop comprises flash vessel 22 and the first electric expansion valve 23.Compressor 21 comprises: air entry 211, exhaust outlet 212 and gas supplementing opening 213; Flash vessel 22 comprises: the first in/out mouth 221, second in/out mouth 222 and gas supplementing opening 223.One end of first electric expansion valve 23 is connected with the gas supplementing opening 213 of compressor, and the other end of the first electric expansion valve 23 is connected with the gas supplementing opening 223 of flash vessel.
Exemplary, the first electric expansion valve 23 can be full cut-off type electric expansion valve.Compressor 21 is for having the compressor of tonifying Qi enthalpy-increasing function.The embodiment of the present invention increases to tonifying Qi other devices except compressor 21 of comprising in the major loop of enthalpy air-conditioning system and between device, annexation does not limit.
Because the aperture of the first electric expansion valve 23 can regulate, therefore embodiments provide a kind of control method increasing enthalpy air-conditioning system based on above-mentioned tonifying Qi, as shown in Figure 3, comprising:
The control instruction that 301: the first electric expansion valve 23 receiving control systems send.
302: the first electric expansion valves 23 regulate aperture according to control instruction.
Optionally, as shown in Figure 4, control system comprises: controller 24 and transmitter 25; Above-mentioned control method also comprises:
The target aperture of the first electric expansion valve 23 determined on a preset condition based by controller 24;
Transmitter 25 sends the control instruction comprising target aperture to the first electric expansion valve 23.
In this situation, step 301 can comprise: the control instruction that the first electric expansion valve 23 receiver transmitter 25 sends; Step 302 can comprise: current aperture is adjusted to target aperture according to control instruction by the first electric expansion valve 23.
Exemplary, the setting means of the embodiment of the present invention to " pre-conditioned " does not limit, such as, during kind of refrigeration cycle, pre-conditionedly can be: the temperature of outdoor environment is more than or equal to first threshold, and/or the condensation temperature of condenser is more than or equal to Second Threshold; Or, heat circulation time, pre-conditionedly can be: the temperature of outdoor environment is less than or equal to the 3rd threshold value.
To controller 24, the embodiment of the present invention determines that the method for target aperture does not limit, such as, can adopt and determine with the following method:
1) during kind of refrigeration cycle, according to the running frequency F of compressor, the temperature T of outdoor environment
outer shroudwith the condensation temperature T of condenser pipe
condensationdetermine the target aperture of the first electric expansion valve 23.
Exemplary, the embodiment of the present invention is to method 1) implementation method do not limit.Such as: when kind of refrigeration cycle, can according to formula S TEP=K1 × F+K2 × T
outer shroud+ K3 × T
condensation+ K4 (being expressed as: formula 1) determines the target aperture STEP of the first electric expansion valve 23.Wherein, K1, K2, K3, K4 are constant; The value of the embodiment of the present invention to K1, K2, K3, K4 does not limit; Increase enthalpy air-conditioning system to make tonifying Qi and reach best air compensation, preferably, the scope of K1, K2, K3, K4 is respectively: 0 < K1≤30,0 < K2≤20,0 < K3≤30 ,-100≤K4≤200.
2) circulation time is heated, according to the running frequency F of compressor and the condensation temperature T of condenser pipe
condensationdetermine the target aperture of the first electric expansion valve.
Exemplary, the embodiment of the present invention is to method 2) implementation method do not limit.Such as: heat circulation time, can according to formula S TEP=K5 × F+K6 × T
outer shroud+ K7 (being expressed as: formula 2) determines the target aperture STEP of the first electric expansion valve 23.Wherein, K5, K6, K7 are constant; The value of the embodiment of the present invention to K5, K6, K7 does not limit; Increase enthalpy air-conditioning system to make tonifying Qi and reach best air compensation, preferably, the span of K5, K6, K7 is respectively: 0 < K5≤30,0 < K6≤20 ,-100≤K7≤200.
During specific implementation, control system can in the process of refrigerating/heating circulation, and the difference of the target temperature set by actual temperature and the user of indoor environment obtains F.In addition, tonifying Qi increases enthalpy air-conditioning system can also comprise outdoor environment temperature sensor, detects outdoor environment temperature T in the process that circulates at refrigerating/heating
outer shroud; Optionally, this outdoor environment temperature sensor can be arranged on the outside of condenser.Tonifying Qi increases enthalpy air-conditioning system can also comprise condensation sensor, for detecting the condensation temperature T of condenser pipe in the process that circulates at refrigerating/heating
condensation; Optionally, this condensation sensor can be arranged on the inside of condenser.
It should be noted that, when the STEP calculated according to above-mentioned formula 1 or formula 2 is equal to or greater than the maximum opening of the first expansion valve 23, then the target aperture of the first electric expansion valve 23 that controller 24 is determined is the maximum opening of the first electric expansion valve 23.Exemplary, assuming that the maximum opening of the first electric expansion valve 23 is 500 steps, then, when the STEP calculated according to above-mentioned formula 1 or formula 2 is equal to or greater than 500 step, the target aperture of the first electric expansion valve 23 that controller 24 is determined is 500 steps.
In order to the tonifying Qi effect making tonifying Qi increase enthalpy air-conditioning system reaches best, in the optional implementation of the another kind of the embodiment of the present invention,
the span of K is [0.85,1.15]; Wherein, P
mendfor the pressure of the gas supplementing opening 223 of flash vessel, P
inhalefor the pressure of the air entry 211 of compressor, P
rowfor the pressure of the exhaust outlet 212 of compressor.
Exemplary, P
mend, P
inhaleand P
rowsize by major loop throttling arrangement determine; Therefore, during specific implementation, by selecting suitable throttling arrangement, formula can be made
in K value belong to [0.85,1.15], thus the tonifying Qi effect making tonifying Qi increase enthalpy air-conditioning system reaches best.
In order to the tonifying Qi effect making tonifying Qi increase enthalpy air-conditioning system reaches best, in a kind of implementation of the embodiment of the present invention, as shown in Figure 5, increase in the tonifying Qi shown in Fig. 2 on the basis of enthalpy air-conditioning system, major loop also comprises: capillary 26, second electric expansion valve 27, condenser 28 and evaporimeter 29 and cross valve 30; Wherein, capillary 26 and the second electric expansion valve 27 are the throttling arrangement of major loop, and one end of capillary 26 is connected with the first in/out mouth 221 of flash vessel 22, and the other end of capillary 26 is connected with condenser 28; One end of second electric expansion valve 27 is connected with the second in/out mouth 222 of flash vessel 22.
Exemplary, increase in enthalpy air-conditioning system in the tonifying Qi shown in Fig. 5, P
menddetermine primarily of capillary 26 internal diameter and length, P
inhaleand P
rowaperture primarily of the second electric expansion valve 27 determines.Generally, when
time between 4 ~ 10, in conjunction with above-mentioned formula
following result can be drawn: P
rowwith P
menddifference be greater than P
mendwith P
inhaledifference, be therefore arranged between flash vessel 22 and condenser 28 by capillary 26, the second electric expansion valve 27 is arranged between flash vessel 22 and evaporimeter 29, and the tonifying Qi effect that tonifying Qi can be made to increase enthalpy air-conditioning system reaches best.
Increase enthalpy air-conditioning system based on the tonifying Qi shown in Fig. 5 below, kind of refrigeration cycle and the flow process heating circulation be described:
During kind of refrigeration cycle, the gaseous refrigerant of the HTHP that compressor 21 generates becomes the gas-liquid two-phase cold-producing medium of low-temp low-pressure through cross valve 30, condenser 28, capillary 26, and enters flash vessel 22; After flash vessel 22, isolate the gaseous refrigerant system of low-temp low-pressure, enter compressor 21 through the first electric expansion valve 23; The liquid refrigerant of low-temp low-pressure flows out after the second electric expansion valve 27 further step-down throttling from flash vessel 22, and in evaporimeter 29, evaporation becomes the gaseous refrigerant of low-temp low-pressure, then enters compressor 21 through cross valve 30; The gaseous refrigerant of the low-temp low-pressure entered from cross valve 30 and the first electric expansion valve 23 is generated the gaseous refrigerant of HTHP by compressor 21, circulates with this.
Heat circulation time, the gaseous refrigerant of the HTHP that compressor 21 generates becomes the gas-liquid two-phase cold-producing medium of low-temp low-pressure through cross valve 30, evaporimeter 29, second electric expansion valve 27, and enters flash vessel 22; After flash vessel 22, isolate the gaseous refrigerant of low-temp low-pressure, enter compressor 21 through the first electric expansion valve 23; The liquid refrigerant of low-temp low-pressure flows out after capillary 26 further step-down throttling from flash vessel 22, and in condenser 28, evaporation becomes the cold-producing medium of the gaseous state of low-temp low-pressure, then enters compressor 21 through cross valve 30; The gaseous refrigerant of the low-temp low-pressure entered from cross valve 30 and the first electric expansion valve 23 is generated the gaseous refrigerant of HTHP by compressor 21, circulates with this.
Based on technique scheme; the first electric expansion valve is used to replace magnetic valve of the prior art in the tonifying Qi loop of tonifying Qi increasing enthalpy air-conditioning system; spool due to the first electric expansion valve is helical structure; there is reverse locking power; therefore, it is possible to avoid the periodic pressure pulsation by the inner chamber of compressor produces to back down, and then tonifying Qi can be avoided to increase enthalpy air-conditioning system generation periodically abnormal mechanical noise.Meanwhile, because the aperture of the first expansion valve can regulate, therefore, it is possible to control the air compensation in the tonifying Qi loop of tonifying Qi increasing enthalpy air-conditioning system flexibly.
Below by specific embodiment, the control method increasing enthalpy air-conditioning system based on above-mentioned tonifying Qi is described.
As shown in Figure 6, be the control method of a kind of tonifying Qi increasing enthalpy air-conditioning system that the embodiment of the present invention provides, be applied in the scene of kind of refrigeration cycle.The method comprises:
601, controller obtains the T that outdoor environment sensor detects within the i-th time cycle
outer shroud.
Exemplary, the concrete value of a time cycle can be determined based on experience value.I is integer, and i is greater than 0.
602, controller obtains the T that condensation sensor detects within the i-th time cycle
condensation.
Wherein, step 601 and 602 performs can in no particular order sequentially, and the embodiment of the present invention does not limit this.
603, controller judges T
outer shroudand/or T
condensationwhether meet pre-conditioned.
If not, illustrate in the i-th time cycle that not needing to carry out tonifying Qi increases enthalpy process, then perform step 604.If so, illustrate that can carry out tonifying Qi by the aperture of adjustment first electric expansion valve increases enthalpy process, then perform step 605.
Exemplary, " pre-conditioned " in step 603 is: T
outer shroudbe more than or equal to first threshold, and/or T
condensationbe more than or equal to Second Threshold.
604, controller determines that the target aperture of the first electric expansion valve is 0.
After performing step 604, then perform step 606.
605, controller obtains the running frequency of compressor, and according to formula 1:STEP=K1 × F+K2 × T
outer shroud+ K3 × T
condensation+ K4 determines the target aperture STEP of the first electric expansion valve; Wherein, 0 < K1≤30,0 < K2≤20,0 < K3≤30 ,-100≤K4≤200.
Concrete, the running frequency of the difference determination compressor of the target temperature that controller can set according to the actual temperature of indoor environment and user.
It should be noted that, when the STEP calculated according to above-mentioned formula 1 is equal to or greater than the maximum opening of the first expansion valve, then the target aperture of the first electric expansion valve that controller is determined is the maximum opening of the first electric expansion valve.
606, transmitter sends the control instruction comprising this target aperture to the first electric expansion valve.
607, the first electric expansion valve receives control instruction.
Current aperture is adjusted to target aperture according to this control command by 608: the first electric expansion valves.
After performing step 608, the control method in the i-th time cycle terminates.
It should be noted that, T
outer shroudand T
condensationvalue can along with the first electric expansion valve aperture change and change; Therefore, when regulating the aperture of the first electric expansion valve within continuous multiple time cycle, the T obtained in each cycle
outer shroudand T
condensationvalue different.
As shown in Figure 7, be the control method of a kind of tonifying Qi increasing enthalpy air-conditioning system that the embodiment of the present invention provides, be applied to and heat in the scene of circulation.The method comprises:
701, controller obtains the T that outdoor environment sensor detects within the i-th time cycle
outer shroud.
Exemplary, the concrete value of a time cycle can be determined based on experience value.I is integer, and i is greater than 0.
702, controller judges T
outer shroudwhether meet pre-conditioned.
If not, illustrate in the i-th time cycle that not needing to carry out tonifying Qi increases enthalpy process, then perform step 703.If so, illustrate that can carry out tonifying Qi by the aperture of adjustment first electric expansion valve increases enthalpy process, then perform step 704.
Exemplary, " pre-conditioned " in step 702 is: T
outer shroudbe less than or equal to the 3rd threshold value.
703, controller determines that the target aperture of the first electric expansion valve is 0.
After performing step 703, then perform step 705.
704, controller obtains the running frequency of compressor, and according to formula 2:STEP=K5 × F+K6 × T
outer shroud+ K7 determines the target aperture STEP of the first electric expansion valve; Wherein, 0 < K5≤30,0 < K6≤20 ,-100≤K7≤200.
Concrete, the running frequency of the difference determination compressor of the target temperature that controller can set according to the actual temperature of indoor environment and user.
It should be noted that, when the STEP calculated according to above-mentioned formula 2 is equal to or greater than the maximum opening of the first expansion valve, then the target aperture of the first electric expansion valve that controller is determined is the maximum opening of the first electric expansion valve.
705, transmitter sends the control instruction comprising this target aperture to the first electric expansion valve.
706, the first electric expansion valve receives control instruction.
Current aperture is adjusted to target aperture according to this control command by 707: the first electric expansion valves.
After performing step 707, the control method in the i-th time cycle terminates.
It should be noted that, T
outer shroudvalue can along with the first electric expansion valve aperture change and change; Therefore, when regulating the aperture of the first electric expansion valve within continuous multiple time cycle, the T obtained in each cycle
outer shroudvalue different.
It should be noted that in addition, " aperture of the first electric expansion valve is 0 " is equivalent to " closing the first electric expansion valve ", and " aperture of the first electric expansion valve is not 0 " is equivalent to " opening the first electric expansion valve ".In order to avoid frequently opening and closing the first electric expansion valve, thus the problem causing for the first electric expansion valve life-span low, during specific implementation, certain control return difference can be set between the condition of unlatching first electric expansion valve and the condition of closing the first electric expansion valve.Such as, when kind of refrigeration cycle: work as T
outer shroudwhen being more than or equal to first threshold, open the first electric expansion valve (namely carry out tonifying Qi by the aperture of adjustment first electric expansion valve and increase enthalpy process); Work as T
outer shroudwhen being less than another threshold value, close the first electric expansion valve (namely do not carry out tonifying Qi and increase enthalpy process), wherein, this threshold value is less than first threshold.Heating circulation time: work as T
outer shroudwhen being less than or equal to the 3rd threshold value, open the first electric expansion valve (namely carry out tonifying Qi by the aperture of adjustment first electric expansion valve and increase enthalpy process); Work as T
outer shroudwhen being greater than another threshold value, close the first electric expansion valve (namely do not carry out tonifying Qi and increase enthalpy process), wherein, this threshold value is greater than the 3rd threshold value.
Based on above-mentioned control method, because the aperture of the first expansion valve can regulate, therefore, it is possible to control the air compensation in the tonifying Qi loop of tonifying Qi increasing enthalpy air-conditioning system flexibly.
Increase enthalpy air-conditioning system based on above-mentioned tonifying Qi, embodiments provide a kind of air-conditioner, the tonifying Qi of any one that this air-conditioner comprises described in above-mentioned Fig. 2, Fig. 5 increases enthalpy air-conditioning system.
In several embodiments that the application provides, should be understood that disclosed apparatus and method can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the INDIRECT COUPLING of device or unit or communication connection can be electrical or other form.
The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed on multiple NE.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit comprises, also can two or more unit in a unit integrated.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form that hardware also can be adopted to add SFU software functional unit realizes.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (9)
1. tonifying Qi increases an enthalpy air-conditioning system, it is characterized in that, comprising: compressor, tonifying Qi loop and control system; Described tonifying Qi loop comprises: flash vessel and the first electric expansion valve; One end of described first electric expansion valve is connected with the gas supplementing opening of described compressor, and the other end of described first electric expansion valve is connected with the gas supplementing opening of described flash vessel;
Described first electric expansion valve receives the control instruction that described control system sends;
Described first electric expansion valve regulates aperture according to described control instruction.
2. tonifying Qi according to claim 1 increases enthalpy air-conditioning system, and it is characterized in that, described control system comprises: controller, transmitter;
The target aperture of described first electric expansion valve determined on a preset condition based by described controller;
Described transmitter sends to described first electric expansion valve the control instruction comprising described target aperture;
Described first electric expansion valve regulates aperture according to described control instruction, specifically comprises:
Current aperture is adjusted to described target aperture according to described control instruction by described first electric expansion valve.
3. tonifying Qi according to claim 2 increases enthalpy air-conditioning system, it is characterized in that,
During kind of refrigeration cycle, be describedly pre-conditionedly: the temperature of outdoor environment is more than or equal to first threshold, and/or the condensation temperature of condenser is more than or equal to Second Threshold; Or,
Heat circulation time, be describedly pre-conditionedly: the temperature of outdoor environment is less than or equal to the 3rd threshold value.
4. the tonifying Qi according to Claims 2 or 3 increases enthalpy air-conditioning system, and it is characterized in that, described controller on a preset condition based, is determined the target aperture of described first electric expansion valve, specifically comprised:
During kind of refrigeration cycle, according to the running frequency F of described compressor, the temperature T of outdoor environment
outer shroudwith the condensation temperature T of condenser pipe
condensationdetermine the target aperture of described first electric expansion valve; Or,
Heat circulation time, according to the running frequency F of described compressor and the condensation temperature T of condenser pipe
condensationdetermine the target aperture of described first electric expansion valve.
5. tonifying Qi according to claim 4 increases enthalpy air-conditioning system, it is characterized in that, during described kind of refrigeration cycle, according to the running frequency F of described compressor, the temperature T of outdoor environment
outer shroudwith the condensation temperature T of condenser pipe
condensationdetermine the target aperture of described first electric expansion valve, specifically comprise:
During kind of refrigeration cycle, according to formula S TEP=K1 × F+K2 × T
outer shroud+ K3 × T
condensation+ K4 determines the target aperture STEP of described first electric expansion valve; Or,
Describedly heat circulation time, according to the running frequency F of described compressor and the condensation temperature T of condenser pipe
condensationdetermine the target aperture of described first electric expansion valve, specifically comprise:
Heat circulation time, according to formula S TEP=K5 × F+K6 × T
outer shroud+ K7 determines the target aperture STEP of described first electric expansion valve;
Wherein, described K1, K2, K3, K4, K5, K6, K7 are constant.
6. tonifying Qi according to claim 5 increases enthalpy air-conditioning system, it is characterized in that,
0 < K1≤30,0 < K2≤20,0 < K3≤30 ,-100≤K4≤200; Or,
0＜K5≤30，0＜K6≤20，-100≤K7≤200。
7. the tonifying Qi according to any one of claim 1-6 increases enthalpy air-conditioning system, it is characterized in that,
the span of described K is [0.85,1.15];
Wherein, described P
mendfor the pressure of the gas supplementing opening of described flash vessel, described P
inhalefor the pressure of the air entry of described compressor, described P
rowfor the pressure of the exhaust outlet of described compressor.
8. the tonifying Qi according to any one of claim 1-7 increases enthalpy air-conditioning system, and it is characterized in that, described air-conditioning system also comprises: capillary, the second electric expansion valve, condenser and evaporimeter;
Described capillary is arranged between described flash vessel and described condenser;
Described second electric expansion valve is arranged between described flash vessel and described evaporimeter.
9. an air-conditioner, is characterized in that, the tonifying Qi comprised described in any one of the claims 1-8 increases enthalpy air-conditioning system.
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