CN101495824A - Method for controlling electronic expansion valve of air conditioner - Google Patents
Method for controlling electronic expansion valve of air conditioner Download PDFInfo
- Publication number
- CN101495824A CN101495824A CNA2007800284660A CN200780028466A CN101495824A CN 101495824 A CN101495824 A CN 101495824A CN A2007800284660 A CNA2007800284660 A CN A2007800284660A CN 200780028466 A CN200780028466 A CN 200780028466A CN 101495824 A CN101495824 A CN 101495824A
- Authority
- CN
- China
- Prior art keywords
- eev
- pulse frequency
- unbalanced pulse
- frequency
- controlled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 238000005057 refrigeration Methods 0.000 claims description 11
- 238000001816 cooling Methods 0.000 abstract 1
- 238000012937 correction Methods 0.000 description 16
- 230000008569 process Effects 0.000 description 12
- 239000003507 refrigerant Substances 0.000 description 11
- 230000004044 response Effects 0.000 description 10
- 230000006870 function Effects 0.000 description 8
- 238000007796 conventional method Methods 0.000 description 7
- 230000003044 adaptive effect Effects 0.000 description 6
- 230000008676 import Effects 0.000 description 6
- 230000009467 reduction Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
- F25B41/34—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators
- F25B41/345—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by solenoids
- F25B41/347—Expansion valves with the valve member being actuated by electric means, e.g. by piezoelectric actuators by solenoids with the valve member being opened and closed cyclically, e.g. with pulse width modulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02741—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using one four-way valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/06—Damage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/19—Calculation of parameters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2500/00—Problems to be solved
- F25B2500/26—Problems to be solved characterised by the startup of the refrigeration cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2104—Temperatures of an indoor room or compartment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2106—Temperatures of fresh outdoor air
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
A method for controlling an electronic expansion valve (EEV) in an air conditioner using a compressor includes the steps of: (a) opening the EEV completely when a power is applied to the air conditioner in stand-by mode; (b) closing the EEV completely when the air conditioner starts a cooling or a heating operation; (c) calculating an indoor heat load; (d) calculating a reference opening pulse frequency of the EEV; and (e) controlling in a stepwise manner an opening pulse frequency of the EEV based on the reference opening pulse frequency of the EEV. The opening pulse frequency of the EEV is controlled in a stepwise manner until it reaches the reference opening pulse frequency of the EEV.
Description
Technical field
Put it briefly, the present invention relates to air-conditioner, specifically, the present invention relates to a kind of method of controlling the electric expansion valve (EEV) of air-conditioner, it is applicable to the opening degree that is controlled at the EEV that installs between outdoor heat exchanger and the indoor heat exchanger, so that adjust the total amount of the cold-producing medium that will circulate.
Background technology
As known in the art, typical air-conditioner has as shown in Figure 1 a structure.
With reference to Fig. 1, typical air-conditioner roughly is divided into outdoor unit 110 and indoor unit 120.Outdoor unit 110 comprises: compressor 111, cross valve 112, outdoor heat exchanger 113, electric expansion valve (EEV) 114, holder 115 and outdoor fan 116.Indoor unit 120 comprises indoor heat exchanger 121 and indoor fan 123.
In the refrigerating operaton of the typical air-conditioner with said structure, the high temperature and high pressure gaseous refrigerant that will compress in compressor 111 imports outdoor heat exchanger 113 by cross valve 112, and the function of described outdoor heat exchanger 113 is equivalent to condenser.This high-pressure gaseous refrigerant carries out heat exchange by the outdoor air that outdoor heat exchanger 113 and temperature are lower than the temperature of cold-producing medium, to be condensed into high pressure conditions.Here, outdoor fan 116 is driven by the outdoor fan motor (not shown), and is used for carrying out compulsory circulation with outdoor air.
Along with high-pressure condensed gaseous refrigerant passes is passed through EEV 114, it becomes the liquid refrigerant of low-temp low-pressure by throttling, and is sent to the indoor heat exchanger 121 of indoor unit 120.Here, indoor fan 123 is driven by the indoor fan motor (not shown), and is used for carrying out compulsory circulation with room air.
Next, by carrying out heat exchange at indoor heat exchanger 121 places and room air, make liquid cold-producing medium evaporation, wherein the function of indoor heat exchanger 121 is equivalent to evaporimeter.After evaporation, the low-temp low-pressure gaseous refrigerant flows back to outdoor unit 110 along circulation line, and in circulation line, it imports compressor 111 again by cross valve 112 and by holder 115.Here, the cold-producing medium that uses holder 115 will import compressor 111 changes into and is dry saturated steam.
In addition, in the heating operation of typical air-conditioner, be reversed in the flow direction of cross valve 112 place's cold-producing mediums, thereby the flow direction of cold-producing medium is opposite with refrigerant flow direction in the above-mentioned refrigerating operaton process with said structure.At this moment, because the function of indoor heat exchanger 121 is equivalent to condenser (function when being different from refrigerating operaton), by indoor fan 123, warm air is circulated again in the indoor environment.That is, the cold-producing medium in the heating process of air-conditioner flows along following circulation line: for example, and " compressor 111 → cross valve 112 → indoor heat exchanger 121 → EEV 114 → outdoor heat exchanger 113 → cross valve 112 → holder 115 → compressor 111 ".
Therebetween, under refrigeration mode, the EEV that uses in having the air-conditioner of above-mentioned refrigerant circulation line provides following function: the liquid refrigerant of the condensation that will import from outdoor heat exchanger (condenser) by throttling converts the liquid refrigerant of low-temp low-pressure to and sends it to indoor heat exchanger (evaporimeter) subsequently; And the function of adjusting the cold-producing medium total amount that will circulate.Under heating mode, above-mentioned EEV is by providing the function similar to refrigeration mode with cold-producing medium with the flow direction circulation opposite with refrigeration mode.
Usually, in the initial launch of air-conditioner, when air-conditioner brought into operation, EEV closed.That is, the initial value of the opening degree of EEV is 0 pulse/sec.Because it is the initial value of 0 pulse/sec definitely that air-conditioner ran on when beginning, so guaranteed the convenience of the opening degree of control EEV.
The conventional method of the opening degree of a kind of EEV of control is that air-conditioner is moved in following mode: EEV closes fully in the starting stage that starts, subsequently, opening degree is converted to benchmark opening degree (benchmark unbalanced pulse frequency), and this benchmark opening degree is based on that indoor calculation of Heat Load comes out.
Yet, in the conventional method of the startup of controlling air-conditioner (i.e. the startup of the air-conditioner under the starting stage EEV buttoned-up status of startup), must be when cold-producing medium injects or for the vacuumizing of production line, by using independent jigging machine (jig) enforced opening EEV, operating process is complicated, and operating process is increased, thereby reduced productivity.
In addition, in conventional method, when needing repairing, owing to EEV closes, so the maintenance technician can not inject cold-producing medium after vacuumizing when leakage of refrigerant occurring in the product that discovery is sold.Thereby, when the technical staff must at first turn off power supply and be opened to EEV to a certain degree in test operating procedure, just can carry out the test that needs.Demand causes the seriously not convenient of air-conditioner after-sale service before this operation.
In addition, (trip) phenomenon that according to conventional method, trips possibly.That is, when air-conditioner because the power interruptions of burst and moment stops and when restarting its normal operation, because also there is pressure reduction, so can not obtain sufficient compressor motor moment of torsion, will cause the motor tripping operation like this.
Summary of the invention
Technical problem
Therefore, an object of the present invention is to provide a kind of method of controlling the EEV of air-conditioner, this method is complete opening EEV in supply electric power, in response to operation commencing signal and close EEV fully, the opening degree of EEV is carried out Self Adaptive Control according to the benchmark unbalanced pulse frequency (benchmark opening degree) that calculates.
Technical scheme
According to an aspect of the present invention, provide a kind of method that electric expansion valve (EEV) in the air-conditioner that uses compressor is controlled, this method may further comprise the steps:
(a) when when being in the air-conditioner supply electric power of standby mode, with the EEV complete opening;
(b) when air-conditioner begins refrigeration or heating operation, EEV is closed fully;
(c) according to the difference of indoor and outdoors temperature and indoor temperature and target temperature, thermic load in the counting chamber;
(d), calculate the benchmark unbalanced pulse frequency of EEV according to the reference operation frequency of the indoor thermic load that is calculated, indoor and outdoors temperature and compressor;
(e) according to the benchmark unbalanced pulse frequency of EEV unbalanced pulse frequency, till the unbalanced pulse frequency of EEV reaches the benchmark unbalanced pulse frequency of EEV with step-by-step system control EEV.
Beneficial effect
As mentioned above, (in service in conventional method is closed EEV, subsequently fully in the starting stage that air-conditioner starts to be different from traditional method, change the opening degree of EEV into the benchmark opening degree, this benchmark opening degree is based on that indoor thermic load or the like calculates); The present invention controls the opening degree of the EEV in the air-conditioner in the following manner: in response to powering on the EEV complete opening of air-conditioner, when input operation commencing signal, close EEV fully, subsequently, carry out Self Adaptive Control according to the benchmark unbalanced pulse frequency (benchmark opening degree) that calculates based on indoor thermic load or the like (that is, with step-by-step system or little by little).According to the present invention, can realize injecting manufacture process and the simplification of after-sale service fast that is associated with cold-producing medium.In addition, can prevent the not enough trip phenomenon that takes place of moment of torsion owing to compressor motor effectively, the moment of torsion deficiency of compressor motor is to be caused by the pressure reduction of restarting after stopping.
Description of drawings
By the detailed description that provides below in conjunction with accompanying drawing, above-mentioned and other purposes of the present invention and feature will become more apparent, in the accompanying drawings:
Fig. 1 shows the overall structure figure of typical air-conditioner system;
Fig. 2 shows the block diagram of the operation control device of air-conditioner, and this equipment is fit to use the control method according to the EEV in the air-conditioner of the embodiment of the invention;
Fig. 3 shows the flow chart that the opening degree of the EEV in the air-conditioner is carried out the process of Self Adaptive Control according to the present invention;
Fig. 4 shows the sequential chart according to the process of start-up control of progressively carrying out the EEV in the air-conditioner in time of the present invention.
The specific embodiment
Below, describe each embodiment of the present invention with reference to the accompanying drawings in detail.
As description hereinafter, (in service in conventional method is closed EEV, subsequently fully in the starting stage that air-conditioner starts to be different from conventional method, change the opening degree of EEV into the benchmark opening degree, this benchmark opening degree is based on that indoor thermic load or the like calculates); The present invention controls the opening degree of the EEV in the air-conditioner in the following manner: response powers on the EEV complete opening of air-conditioner, when input operation commencing signal, close EEV fully, subsequently, carry out Self Adaptive Control according to the benchmark unbalanced pulse frequency (benchmark opening degree) that calculates based on indoor thermic load or the like (that is, with step-by-step system or little by little).Use this technological means can realize purpose of the present invention more simply.
Fig. 2 shows the block diagram of the operation control device of air-conditioner, and this equipment is fit to use the control method according to the EEV in the air-conditioner of the embodiment of the invention.Operation control device shown in Fig. 2 comprises indoor temperature transmitter 202, outdoor temperature sensor 204, operational module 206, control module 208, memory module 209 and EEV driver module 210.
With reference to Fig. 2, indoor temperature transmitter 202 is installed in the ad-hoc location of the indoor unit 120 shown in (for example) Fig. 1, is used to measure indoor temperature.Subsequently, the indoor temperature of measuring is sent to control module 208.Same, outdoor temperature sensor 204 is installed in the ad-hoc location of the outdoor unit 110 shown in (for example) Fig. 1, is used to measure outdoor temperature.Subsequently, the outdoor temperature of measuring is sent to control module 208.
In addition, control module 208 is come thermic load in the counting chamber according to current refrigerating capacity, current heating capacity and the correction coefficient that each is determined; And calculate the benchmark unbalanced pulse frequency (that is the benchmark unbalanced pulse frequency under refrigeration mode and heating mode) of EEV under every kind of pattern subsequently according to the reference operation frequency of the indoor thermic load, indoor and outdoors temperature and the compressor that calculate.Control module 208 is carried out Self Adaptive Control according to the benchmark unbalanced pulse frequency that calculates to the opening degree of EEV (with step-by-step system or little by little).Here, refrigeration and heating capacity are the fixed value according to the indoor unit capacity.
In addition, for control according to the present invention, control module 208 EEV that complete opening is closed always in supply electric power, closing EEV when moving commencing signal fully by user input (or by being provided with in advance), and according to the benchmark unbalanced pulse frequency that calculates with step-by-step system or little by little control the opening degree of EEV.With reference to Fig. 3 this process is described in more detail below.
In addition, control module 208 is carried out its conventional function, that is, optionally generate any control signal of drive chamber's internal fan, outdoor fan, compressor or the like, and provide control signal to each corresponding assembly.
At last, the opening degree control signal that 210 responses of EEV driver module are provided by control module 208, the opening degree of the EEV 114 shown in the control chart 1.More particularly, EEV driver module 210 carries out following operation: when power-on, in response to the unlatching control signal from control module 208, complete opening EEV 114; When input operation commencing signal, response is closed EEV 114 fully from the closing control signal of control module 208; And under the control of control module 208, with step-by-step system or little by little the opening degree of EEV is increased to the benchmark opening degree.
Below, with reference to the operation control device of air-conditioner the stepping process according to the opening degree control of EEV of the present invention is described with said structure.
Fig. 3 shows the flow chart that the opening degree of the EEV in the air-conditioner is carried out Method of Adaptive Control according to the present invention.
With reference to Fig. 3, when being in standby mode (stand-by energy-saving pattern) at air-conditioner and importing power on signal by the user, promptly, if from operational module 206 input power on signal (step S302 and S304), then control module 208 just generates the unlatching control signal in response to power on signal, be used for the EEV 114 shown in complete opening Fig. 1, and the unlatching control signal that will generate sends to EEV driver module 210.In response to this signal, EEV driver module 210 generates and is used for the driving signal of complete opening EEV 114, thereby fully opens EEV 114 (step S306).At this moment, because EEV 114 all opens,, thereby realize pressure balance so the pressure reduction between the indoor and outdoors unit disappears.In this way, just can prevent trip phenomenon, described trip phenomenon be not enough the causing of moment of torsion of the compressor motor that causes because of pressure reduction.
Thereafter, along with EEV 114 complete openings, control module 208 checks whether imported operation commencing signal (step S308).The result who checks is that if imported the operation commencing signal, then control module 208 generates the closing control signal, is used for closing fully EEV 114, and the closing control signal that generates is sent to EEV driver module 210.In response to this signal, EEV driver module 210 generates and is used for closing fully the driving signal of EEV 114, thereby closes EEV 114 (step S310) fully.At this moment, the unbalanced pulse frequency of EEV 114 is 0 pulse/sec (initial value).
Next, indoor temperature transmitter 202 is measured indoor temperature (indoor air temperature) T
AiAnd provide it to control module 208, and outdoor temperature sensor 204 is measured outdoor temperature (outside air temperature) T
AoAnd provide it to control module 208 (step S312).
In response to aforesaid operations, control module 208 is determined the correction coefficient FT of indoor temperature with reference to the correction coefficient table that is pre-stored in the memory module 209
Ai, outdoor temperature FT
AoAnd the FdT (step S314) of the difference dT of indoor temperature and target temperature (user's design temperature).Here, each correction coefficient all is used to adjust the benchmark opening degree of EEV 114.
For above-mentioned purpose, the correction coefficient of form is made in memory module 209 storages.For example, those correction coefficient can be defined as as shown in the form 1 to 3.
Table 1
[table 1]
Table 2
[table 2]
Table 3
[table 3]
Table 1 shows the sample list of the correction coefficient of the indoor temperature under refrigeration and heating operation pattern, the sample list of the correction coefficient of the outdoor temperature under table 2 expression refrigeration and the heating operation pattern.Table 3 has been described the sample list of the correction coefficient of the difference of indoor temperature and target temperature under refrigeration and heating operation pattern.
Subsequently, control module 208 is according to default refrigerating capacity Q
c, default heating capacity Q
h, indoor temperature correction coefficient FT
Ai, outdoor temperature correction coefficient FT
Ao, and the correction coefficient FdT of the difference of indoor temperature and target temperature, by refrigerating/heating load Q (step S316) in formula 1 counting chamber.
Formula 1
[formula 1]
Next, control module 208 is according to the indoor thermic load Q, the reference operation frequency F of compressor that draw from formula 1
b, indoor temperature T
AiAnd outdoor temperature T
Ao, respectively by using formula 2 and formula 3 to calculate the benchmark unbalanced pulse frequency P of EEV under the refrigeration mode
B, cAnd the benchmark unbalanced pulse frequency P of EEV under the heating mode
B, h(step S318).Here, require with in the absolute temperature form counting chamber and outdoor temperature.Not so, when they are subzero temperature, when being updated to formula 2 and formula 3, they can make a mistake.
Formula 2
[formula 2]
Formula 3
[formula 3]
Usually, the approximate extents of the unbalanced pulse frequency of the EEV in the air-conditioner is 70 pulse/sec to 280 pulse/sec.Thereby, in service at air-conditioner, the EEV benchmark unbalanced pulse frequency that control module 208 calculates is in the scope of about 70 pulse/sec to 280 pulse/sec, and described control module 208 is adjusted the opening degree of EEV according to the benchmark unbalanced pulse frequency that calculates.
That is, with reference to the present invention, when having experienced electric power starting complete opening EEV and when input operation commencing signal, once more it is closed fully after, calculate the benchmark unbalanced pulse frequency of the opening degree that is used to adjust EEV by said process.
Next, the opening degree of EEV is little by little controlled or control with step-by-step system to control module 208 by using benchmark unbalanced pulse frequency.For example, as shown in Figure 4, (for example, the operation pulse frequency is respectively 0.7 * P by the control of quadravalence section EEV unbalanced pulse
b, 0.8 * P
b, 0.9 * P
b, 1.1 * P
bFour-stage, and the duration in each stage be one minute), with step-by-step system the opening degree of EEV is controlled, reach benchmark unbalanced pulse frequency P up to the opening degree of EEV
bTill (step S320).That is to say that process of the present invention after four minutes, enters stable state control in the start-up control of carrying out EEV, this start-up control of four minutes realizes by increasing the unbalanced pulse frequency according to benchmark unbalanced pulse frequency in each minute.
More particularly, in first minute that imports after moving commencing signal (phase I), carry out start-up control with the first starting impulse frequency, this first starting impulse frequency draws by benchmark unbalanced pulse frequency be multiply by 0.7.In second minute (second stage), carry out start-up control with the second starting impulse frequency, this second starting impulse frequency draws by benchmark unbalanced pulse frequency be multiply by 0.8.In the 3rd minute (phase III), carry out start-up control with the 3rd starting impulse frequency, the 3rd starting impulse frequency draws by benchmark unbalanced pulse frequency be multiply by 0.9.At last, in the 4th minute (quadravalence section), carry out start-up control with the 4th starting impulse frequency, the 4th starting impulse frequency draws (it is the unbalanced pulse frequency pulse that is higher than benchmark unbalanced pulse frequency) by benchmark unbalanced pulse frequency being multiply by 1.1.After these four minutes (that is, after having carried out the start-up control of this quadravalence section), carry out stable state control with benchmark unbalanced pulse frequency with step-by-step system.
Here, the EEV unbalanced pulse frequency of quadravalence section is set to be higher than benchmark unbalanced pulse frequency P
bReason be to prevent the quick growth of the pressure at expulsion (dischargepressure) of (if compressor after under excess load or full load situation, starting only after three minutes, when the running frequency of compressor reaches its maximum) compressor.
Thereby, according to the present invention, because EEV is a complete opening when electric power starting, so on production line, just no longer need to be used to inject the independent jigging machine (being used for enforced opening EEV) of cold-producing medium.The operating procedure of operating process that can obtain to simplify and minimizing so just, thus product yield improved.In addition, take place in the product of selling in the maintenance service process of leakage of refrigerant, EEV will complete opening in electric power starting only, therefore, the maintenance technician can more easily connect vavuum pump so that inject cold-producing medium, thereby has realized quick after-sale service.
In addition, at air-conditioner because when suddenly power interruptions and moment stopped then to begin again its normal operation (returning power mode), EEV automatically was opened to full amplitude, so that keep-up pressure balance.Thereby, can effectively prevent the not enough trip phenomenon that takes place of moment of torsion owing to compressor motor, the moment of torsion deficiency of compressor motor is caused by pressure reduction.
Therebetween, according to embodiments of the invention, although the startup of EEV be by with step-by-step system through quadravalence section (for example, 0.7 * P
b, 0.8 * P
b, 0.9 * P
b, 1.1 * P
b) change EEV opening degree, till it reaches benchmark unbalanced pulse frequency, control, but this embodiment only is that the present invention is not so limited for illustrative purposes.If application need, or according to application, the opening degree of EEV can be more than stage of four (for example, five, six, seven, eight stages or the like) and by controlling more than four stage, clearly, by using such scheme, can control the startup operation of EEV more reposefully.
In addition, according to embodiments of the invention, although for each minute in each stage in the four-stage of the opening degree of EEV, the driving of air-conditioner all is that this embodiment only is that the present invention is not so limited for illustrative purposes uniformly.Clearly, consider various factors (for example, the surrounding environment of air-conditioner), can increase or shorten the time period.No matter when also be noted that needs or according to application, all can will the ground setting such as carry out not in the running time of per stage air-conditioner.
In addition, according to embodiments of the invention, although the correction coefficient of indoor temperature, outdoor temperature and temperature difference (that is the difference of indoor temperature and target temperature) is to read from the form of pre-stored, but this embodiment only is that the present invention is not so limited for illustrative purposes.Clearly, select as removing the another kind that is pre-stored in the form, can be with real-time mode calculation correction coefficient.
Though specifically illustrate and described the present invention above with reference to embodiment, it will be understood by those skilled in the art that on the basis of the protection scope of the present invention that does not break away from claims definition, can carry out variations and modifications.
Claims (5)
1, a kind of method of controlling the electric expansion valve (EEV) in the air-conditioner that uses compressor said method comprising the steps of:
(a) when when the described air-conditioner that is in standby mode is supplied electric power, with described EEV complete opening;
(b) when described air-conditioner begins refrigeration or heating operation, described EEV is closed fully;
(c) according to the difference of indoor and outdoors temperature and described indoor temperature and target temperature, thermic load in the counting chamber;
(d), calculate the benchmark unbalanced pulse frequency of described EEV according to the reference operation frequency of the indoor thermic load that is calculated, described indoor and outdoors temperature and described compressor;
(e) control the unbalanced pulse frequency of described EEV according to the described benchmark unbalanced pulse frequency of described EEV with step-by-step system, till the unbalanced pulse frequency of described EEV reaches the described benchmark unbalanced pulse frequency of described EEV.
2, method according to claim 1, wherein, described step (e) may further comprise the steps:
(e1) the described unbalanced pulse frequency of described EEV is controlled with the first starting impulse frequency in very first time section;
(e2) the described unbalanced pulse frequency of described EEV is controlled with the second starting impulse frequency in second time period;
(e3) the described unbalanced pulse frequency of described EEV is controlled with the 3rd starting impulse frequency in the 3rd time period;
(e4) the described unbalanced pulse frequency of described EEV is controlled with the 4th starting impulse frequency in the 4th time period;
(e5) with described benchmark unbalanced pulse frequency the described unbalanced pulse frequency of described EEV is controlled.
3, method according to claim 1, wherein, described step (e) may further comprise the steps:
(e1) the described unbalanced pulse frequency of described EEV is controlled with the first starting impulse frequency in very first time section;
(e2) the described unbalanced pulse frequency of described EEV is controlled with the second starting impulse frequency in second time period;
(e3) the described unbalanced pulse frequency of described EEV is controlled with the 3rd starting impulse frequency in the 3rd time period;
(e4) the described unbalanced pulse frequency of described EEV is controlled with the 4th starting impulse frequency in the 4th time period;
(e5) with described benchmark unbalanced pulse frequency the described unbalanced pulse frequency of described EEV is controlled.
4, method according to claim 2, wherein, described first to fourth time period has equal time span.
5, method according to claim 2 wherein, is determined described the 4th starting impulse frequency, even if so that reach under its peaked situation in the running frequency of described compressor, the growth rate of the pressure at expulsion of described compressor also still keeps below particular value.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020060073556A KR100785979B1 (en) | 2006-08-04 | 2006-08-04 | Method for controlling electronic expansion valve of air conditioner |
| KR1020060073556 | 2006-08-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101495824A true CN101495824A (en) | 2009-07-29 |
Family
ID=38997383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007800284660A Pending CN101495824A (en) | 2006-08-04 | 2007-07-16 | Method for controlling electronic expansion valve of air conditioner |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20080028779A1 (en) |
| EP (1) | EP2047185A1 (en) |
| KR (1) | KR100785979B1 (en) |
| CN (1) | CN101495824A (en) |
| WO (1) | WO2008016228A1 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033006A (en) * | 2011-09-29 | 2013-04-10 | 杭州三花研究院有限公司 | Car air conditioning system electronic expansion valve control method |
| CN103033007A (en) * | 2011-09-29 | 2013-04-10 | 杭州三花研究院有限公司 | Car air conditioning system electronic expansion valve control method |
| CN103033008A (en) * | 2011-09-29 | 2013-04-10 | 杭州三花研究院有限公司 | Car air conditioning system electronic expansion valve control method |
| CN103033005A (en) * | 2011-09-29 | 2013-04-10 | 杭州三花研究院有限公司 | Car air conditioning system electronic expansion valve control method |
| CN103411291A (en) * | 2013-08-30 | 2013-11-27 | 海信（山东）空调有限公司 | Expansion valve injection control method and system |
| CN103808092A (en) * | 2012-11-12 | 2014-05-21 | 特灵国际有限公司 | Expansion Valve Control System and Method for Air Conditioning Apparatus |
| CN104515252A (en) * | 2013-09-28 | 2015-04-15 | 杭州三花研究院有限公司 | Control method of electronic expansion valve |
| CN104633862A (en) * | 2015-02-03 | 2015-05-20 | 深圳麦格米特电气股份有限公司 | Control method of electronic expansion valve in refrigeration operation of variable frequency air conditioner |
| CN104654529A (en) * | 2015-02-03 | 2015-05-27 | 深圳麦格米特电气股份有限公司 | Control method of electronic expansion valve during heating operation of variable frequency air conditioner |
| CN105546742A (en) * | 2015-12-25 | 2016-05-04 | 美的集团武汉制冷设备有限公司 | Air conditioner and air conditioner control method and device |
| CN107321488A (en) * | 2017-08-30 | 2017-11-07 | 四川省红利达尾矿综合利用有限公司 | Rotate water valve jigging machine |
| CN111076352A (en) * | 2019-12-30 | 2020-04-28 | 宁波奥克斯电气股份有限公司 | Control method and device for multi-split air conditioner electronic expansion valve, air conditioner and storage medium |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575782B (en) | 2009-08-17 | 2014-04-09 | 盾安美斯泰克股份有限公司 | Micromachined device and control method |
| US8011191B2 (en) | 2009-09-30 | 2011-09-06 | Thermo Fisher Scientific (Asheville) Llc | Refrigeration system having a variable speed compressor |
| WO2011094302A2 (en) | 2010-01-28 | 2011-08-04 | Microstaq, Inc. | Process for reconditioning semiconductor surface to facilitate bonding |
| CN102792419B (en) | 2010-01-28 | 2015-08-05 | 盾安美斯泰克股份有限公司 | The technique that high temperature selective fusion engages and structure |
| JP5404487B2 (en) * | 2010-03-23 | 2014-01-29 | 三菱電機株式会社 | Multi-room air conditioner |
| US8996141B1 (en) | 2010-08-26 | 2015-03-31 | Dunan Microstaq, Inc. | Adaptive predictive functional controller |
| US20120172724A1 (en) * | 2010-12-31 | 2012-07-05 | Hill Anthony D | Automatic identification of intracardiac devices and structures in an intracardiac echo catheter image |
| US8925793B2 (en) | 2012-01-05 | 2015-01-06 | Dunan Microstaq, Inc. | Method for making a solder joint |
| JP5450694B2 (en) * | 2012-03-05 | 2014-03-26 | 本田技研工業株式会社 | Air conditioner for vehicles |
| US9140613B2 (en) | 2012-03-16 | 2015-09-22 | Zhejiang Dunan Hetian Metal Co., Ltd. | Superheat sensor |
| CN104813117B (en) * | 2012-11-21 | 2016-10-05 | 三菱电机株式会社 | Conditioner |
| US9417638B2 (en) * | 2012-12-20 | 2016-08-16 | Automotive Research & Testing Center | Intelligent thermostatic control method and device for an air conditioner blowing cold and hot air |
| KR20170127059A (en) * | 2013-02-04 | 2017-11-20 | 쯔지앙 산후아 오토모티브 컴포넌츠 컴퍼니 리미티드 | Electronic expansion valve and control method thereof |
| US9188375B2 (en) | 2013-12-04 | 2015-11-17 | Zhejiang Dunan Hetian Metal Co., Ltd. | Control element and check valve assembly |
| KR20190002790A (en) * | 2017-06-29 | 2019-01-09 | 삼성전자주식회사 | Air conditioner and method for control of air conditioner |
| 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 |
| CN107388663B (en) * | 2017-08-03 | 2019-03-26 | 珠海格力电器股份有限公司 | Control method of heat pump system and heat pump system |
| JP7015778B2 (en) * | 2018-12-11 | 2022-02-03 | 本田技研工業株式会社 | Air conditioner |
| CN111854032B (en) * | 2020-07-13 | 2021-09-21 | 珠海格力电器股份有限公司 | Control method of electronic expansion valve, control method of air conditioner and air conditioner |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5000009A (en) * | 1990-04-23 | 1991-03-19 | American Standard Inc. | Method for controlling an electronic expansion valve in refrigeration system |
| JP3676481B2 (en) * | 1996-03-07 | 2005-07-27 | 三菱電機株式会社 | Electronic expansion valve controller for air conditioner |
| US6318101B1 (en) * | 2000-03-15 | 2001-11-20 | Carrier Corporation | Method for controlling an electronic expansion valve based on cooler pinch and discharge superheat |
| US6321549B1 (en) * | 2000-04-14 | 2001-11-27 | Carrier Corporation | Electronic expansion valve control system |
| US6498927B2 (en) * | 2001-03-28 | 2002-12-24 | Gct Semiconductor, Inc. | Automatic gain control method for highly integrated communication receiver |
| KR100544673B1 (en) * | 2002-10-04 | 2006-01-23 | 제일모직주식회사 | Extruder Screw for Preparing Sheet Grade Resin Pellets |
| KR100457569B1 (en) * | 2002-11-22 | 2004-11-18 | 엘지전자 주식회사 | a linear expansion valve's control method for a heat pump system |
-
2006
- 2006-08-04 KR KR1020060073556A patent/KR100785979B1/en active IP Right Grant
-
2007
- 2007-07-16 CN CNA2007800284660A patent/CN101495824A/en active Pending
- 2007-07-16 EP EP07768769A patent/EP2047185A1/en not_active Withdrawn
- 2007-07-16 WO PCT/KR2007/003440 patent/WO2008016228A1/en active Application Filing
- 2007-08-01 US US11/832,216 patent/US20080028779A1/en not_active Abandoned
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033007B (en) * | 2011-09-29 | 2015-11-18 | 杭州三花研究院有限公司 | A kind of control method of automotive air-conditioning system electric expansion valve |
| CN103033007A (en) * | 2011-09-29 | 2013-04-10 | 杭州三花研究院有限公司 | Car air conditioning system electronic expansion valve control method |
| CN103033008A (en) * | 2011-09-29 | 2013-04-10 | 杭州三花研究院有限公司 | Car air conditioning system electronic expansion valve control method |
| CN103033005A (en) * | 2011-09-29 | 2013-04-10 | 杭州三花研究院有限公司 | Car air conditioning system electronic expansion valve control method |
| CN103033006A (en) * | 2011-09-29 | 2013-04-10 | 杭州三花研究院有限公司 | Car air conditioning system electronic expansion valve control method |
| CN103033008B (en) * | 2011-09-29 | 2016-04-20 | 杭州三花研究院有限公司 | A kind of control method of automotive air-conditioning system electric expansion valve |
| CN103033006B (en) * | 2011-09-29 | 2016-03-23 | 杭州三花研究院有限公司 | A kind of control method of automotive air-conditioning system electric expansion valve |
| CN103808092A (en) * | 2012-11-12 | 2014-05-21 | 特灵国际有限公司 | Expansion Valve Control System and Method for Air Conditioning Apparatus |
| US9863681B2 (en) | 2012-11-12 | 2018-01-09 | Trane International Inc. | Expansion valve control system and method for air conditioning apparatus |
| CN103411291A (en) * | 2013-08-30 | 2013-11-27 | 海信（山东）空调有限公司 | Expansion valve injection control method and system |
| CN103411291B (en) * | 2013-08-30 | 2016-03-09 | 海信（山东）空调有限公司 | A kind of expansion valve injection control method and system |
| CN104515252A (en) * | 2013-09-28 | 2015-04-15 | 杭州三花研究院有限公司 | Control method of electronic expansion valve |
| CN104654529A (en) * | 2015-02-03 | 2015-05-27 | 深圳麦格米特电气股份有限公司 | Control method of electronic expansion valve during heating operation of variable frequency air conditioner |
| CN104633862A (en) * | 2015-02-03 | 2015-05-20 | 深圳麦格米特电气股份有限公司 | Control method of electronic expansion valve in refrigeration operation of variable frequency air conditioner |
| CN104633862B (en) * | 2015-02-03 | 2018-01-09 | 深圳麦格米特电气股份有限公司 | The control method of electric expansion valve during a kind of refrigerating of convertible frequency air conditioner operation |
| CN105546742A (en) * | 2015-12-25 | 2016-05-04 | 美的集团武汉制冷设备有限公司 | Air conditioner and air conditioner control method and device |
| CN105546742B (en) * | 2015-12-25 | 2018-10-26 | 美的集团武汉制冷设备有限公司 | The control method and device of air conditioner and air conditioner |
| CN107321488A (en) * | 2017-08-30 | 2017-11-07 | 四川省红利达尾矿综合利用有限公司 | Rotate water valve jigging machine |
| CN111076352A (en) * | 2019-12-30 | 2020-04-28 | 宁波奥克斯电气股份有限公司 | Control method and device for multi-split air conditioner electronic expansion valve, air conditioner and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100785979B1 (en) | 2007-12-14 |
| WO2008016228A1 (en) | 2008-02-07 |
| US20080028779A1 (en) | 2008-02-07 |
| EP2047185A1 (en) | 2009-04-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101495824A (en) | Method for controlling electronic expansion valve of air conditioner | |
| CN101495815A (en) | Method for controlling operating of air conditioner | |
| KR100423681B1 (en) | Method for controlling an electronic expansion valve based on cooler pinch and discharge superheat | |
| CN102425841B (en) | Method for controlling machine room air conditioner based on variable frequency compressor | |
| US20070261422A1 (en) | Humidity control for air conditioning system | |
| EP2806223A1 (en) | Air-conditioning system that adjusts temperature and humidity | |
| CN105222445A (en) | The control method of electric expansion valve, device and air-conditioner set and control method thereof | |
| JPH06241595A (en) | Heat pump system and control method of operation thereof | |
| CN104776555A (en) | Thermostatic dehumidification control method and device of air conditioner | |
| CN103210265A (en) | Expansion valve control system and method for air conditioning apparatus | |
| US20100131106A1 (en) | Method for efficient operation of cooling system | |
| CN101109592A (en) | Temperature emergent state controlling means for air conditioner compressor air suction port | |
| CN105020862A (en) | Intelligent air conditioner control method with memory function, control device and intelligent air conditioner | |
| CN101852523A (en) | Superheat degree control method and system for refrigeration circulation system | |
| US11982487B2 (en) | Defrosting control method, central controller and heating system | |
| CN114413416B (en) | Defrosting control method for multi-split air conditioner, storage medium and multi-split air conditioner | |
| CN111412624A (en) | Air conditioning unit and compressor frequency control method thereof | |
| JP2012247118A (en) | Air-cooled heat pump chiller | |
| CN109405407A (en) | Refrigerator fermentation process and refrigerator with independent compartment | |
| CN103712308B (en) | A kind of air-conditioner capacity regulating control method and system | |
| CN101086374A (en) | Air conditioner and control method thereof | |
| CN110131854A (en) | Air conditioner and its air conditioning control method, control device and readable storage medium storing program for executing | |
| JP3813266B2 (en) | Air conditioner | |
| Singh | Optimum refrigeration control with E2™ | |
| KR20070077634A (en) | Lev control method for air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090729 |