CN102654338B - The control method of electric expansion valve in air-conditioner - Google Patents
The control method of electric expansion valve in air-conditioner Download PDFInfo
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- CN102654338B CN102654338B CN201210141760.5A CN201210141760A CN102654338B CN 102654338 B CN102654338 B CN 102654338B CN 201210141760 A CN201210141760 A CN 201210141760A CN 102654338 B CN102654338 B CN 102654338B
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Abstract
The present invention provides the control method of electric expansion valve in a kind of air-conditioner, including: every time during air-conditioner start, the stable aperture of the electric expansion valve run under the air-conditioner at least twice model identical before this start is averaged, estimates aperture to obtain; When needing, after this start, the flow regulating electric expansion valve, first the aperture of electric expansion valve is directly adjusted to and estimates aperture, then it is adjusted to target aperture from estimating aperture, target aperture after this start and the stable aperture under at least twice model identical before this start, be the aperture having when electric expansion valve degree of superheat of evaporator outlet in air-conditioner reaches to set the degree of superheat.
Description
Technical field
The present invention relates to the control method of electric expansion valve in a kind of air-conditioner.
Background technology
1. transducer air conditioning adopts electric expansion valve as restricting element, the aperture flow requiring over variable expansion valve during air-conditioner use reaches the optimum state of use, but because the flow adjustable extent of electric expansion valve is relatively larger, the time needed for optimum state flow position needed for being adjusted to air-conditioner when using every time is longer, cooling or heating effect affect after air-conditioner is started shooting in a period of time and efficiency.
2. environmental factors difference in all parts of the country is bigger, when user uses the set-up mode of air-conditioner is also different, so the aperture of electric expansion valve when every air-conditioner runs to steady statue differing, if arranging after unified initial opening arranges during start, it is adjusted to settling position required time different, it is difficult to reach optimum efficiency.
Publication number is the Chinese patent of 101509693, disclose the control method of a kind of frequency conversion heat pump outdoor machine of air-conditioner electronic expansion valve, comprise the following steps: (1) microprocessor receive interior confidential seek the signal heated after, electric expansion valve (6) is resetted; (2) compressor of air conditioner (1) starts, and after low frequency operating 3��6MIN, transfers target frequency operating to, and now the aperture of electric expansion valve (6) is transferred in 150��450 apertures by microprocessor; (3), after electric expansion valve (6) maintains 120S in 150��450 apertures, start every 15S and detect the temperature of primary transducer; (4) aperture of electric expansion valve (6) is once pressed TC >=TE or TC by the every 30S of microprocessor. It equally exists drawbacks described above.
Summary of the invention
For Problems existing in correlation technique, it is an object of the invention to provide the control method of electric expansion valve in a kind of air-conditioner, during to shorten the start of each air-conditioner, electric expansion valve is adjusted to the time needed for the optimum state flow position needed for air-conditioner.
For achieving the above object, the invention provides the control method of electric expansion valve in a kind of air-conditioner, including: every time during air-conditioner start, the stable aperture of the electric expansion valve run under the air-conditioner at least twice model identical before this start is averaged, estimates aperture to obtain; When needing, after this start, the flow regulating electric expansion valve, first the aperture of electric expansion valve is directly adjusted to and estimates aperture, then it is adjusted to target aperture from estimating aperture, wherein the target aperture after this start and the stable aperture under described at least twice model identical before this start, be the aperture that electric expansion valve has when the degree of superheat that air-conditioner evaporator exports reaches to set the degree of superheat.
Preferably, this model identical is any one in refrigeration mode, heating mode, dehumidification mode.
Preferably, with this start shooting time the set wind speed of described air-conditioner operating and described air-conditioner residing for the temperature of indoor environment for condition, stablize in aperture from all described at least twice model identical, choose the stable aperture being under the same terms and carry out the described calculating averaged.
Preferably, with the air-conditioner outdoor environment temperature when this is started shooting for condition, stablize in aperture from all described at least twice model identical, choose the stable aperture being under the same terms and carry out the described calculating averaged.
Preferably, during after this start 2 to 4 minutes, just carry out described the aperture of electric expansion valve being directly adjusted to when this is started shooting and obtained estimating aperture.
Preferably, air-conditioner is transducer air conditioning.
The Advantageous Effects of the present invention is in that: every time during air-conditioner start, the stable aperture of the electric expansion valve of operation under at least twice model identical before this start is averaged and estimates aperture to obtain, start to regulate to target aperture from estimating aperture by electric expansion valve, thus electric expansion valve is adjusted to the time needed for the optimum state flow position needed for air-conditioner when being effectively shortened start every time. And then improve the cooling or heating effect of air-conditioner, promote efficiency level during air-conditioner start, power and energy saving simultaneously.
Accompanying drawing explanation
Fig. 1 is the flow chart of the control method of electric expansion valve in air-conditioner of the present invention.
Detailed description of the invention
The specific embodiment of control method of the present invention is described referring to accompanying drawing below.
Referring to Fig. 1, the control method of electric expansion valve in air-conditioner of the present invention is described, wherein air-conditioner of the present invention using electric expansion valve as the refrigerant circulation circuit of air-conditioner in restricting element, control method of the present invention comprises the steps:
Step S101, during the start of each air-conditioner (air-conditioning receive starting-up signal after), to air-conditioner this start before at least twice model identical (such as, in refrigeration mode, heating mode, dehumidification mode any one) under the stable aperture of electric expansion valve run average and estimate aperture to obtain, wherein, estimate aperture and namely can be equal to above-mentioned meansigma methods, can also be other values having certain deviation (such as, than meansigma methods big 5% or little by 5%) relative to calculated meansigma methods;
Step S102, when needing to regulate flow of electronic expansion valve after this start, first the aperture of electric expansion valve is directly adjusted to and above-mentioned estimates aperture, namely, to estimate aperture as initial opening, in one embodiment, during after this start 2 to 4 minutes, just carry out described the aperture of electric expansion valve is directly adjusted to obtain when this is started shooting estimate aperture;
Step S103, regulates the aperture of electric expansion valve;
Step S104, it is judged that the electronic expansion valve opening after adjustment reaches target aperture? if it is judged that be "Yes", then proceed to step S105, otherwise proceed to step S103;
Step S105, electronic expansion valve regulation terminates.
The target aperture that when it may be noted that this start described, electric expansion valve to be adjusted to is the aperture that------electric expansion valve has when the degree of superheat that air-conditioner evaporator exports reaches to set the degree of superheat; Described in before this start under at least twice model identical, the stable aperture of electric expansion valve is the degree of superheat of------evaporator outlet aperture that electric expansion valve has when reaching to set the degree of superheat. Obvious target aperture is identical with the implication stablizing aperture, has just distinguished only to facilitate describe.
Due to, the aperture of electric expansion valve is directly adjusted to obtained above to estimate aperture by the present invention when each air-conditioner is started shooting, then it is adjusted to target aperture from estimating aperture, thus electric expansion valve is adjusted to the time needed for the optimum state flow position needed for air-conditioner when the present invention is effectively shortened start every time, namely shortens and be adjusted to target aperture required time. And then improve the cooling or heating effect of air-conditioner, promote efficiency level during air-conditioner start, power and energy saving simultaneously.
Additionally, in order to when shortening start every time further, electric expansion valve is adjusted to the time needed for the optimum state flow position needed for air-conditioner, when aperture is estimated in acquisition, except the condition being in model identical before considering aforesaid start, it is also contemplated that the factor of the temperature of indoor environment, outdoor environment temperature residing for the indoor air velocity of setting, air-conditioner during other such as air-conditioner operating.
Specifically, such as, can this start time the set wind speed (indoor air velocity) of air-conditioner operating and air-conditioner residing for the temperature of indoor environment be condition, from all stablizing in aperture at least twice model identical before this start, choose the stable aperture being under the same terms and carry out the described calculating averaged. In other words, participating in the stable aperture local environment condition (residing for the wind speed set with air-conditioner operating and air-conditioner, the temperature of indoor environment is for measurement index) of mean value calculation, environmental condition when starting shooting with this is identical. Again in other words, because the indoor air velocity of air-conditioner is bigger on flow of electronic expansion valve impact, to air-conditioner electronic expansion valve opening time stable (, the stable aperture of electric expansion valve) different parameters (such as indoor air velocity, indoor temperature etc.) that sets according to user classifies, electric expansion valve being stablized stable aperture when (estimating aperture to obtain) when aperture is calculated estimating pays the utmost attention to identical user's setup parameter.
Again for example, it is also possible to the air-conditioner outdoor environment temperature when this is started shooting is condition, before this start all at least twice model identical are stablized in aperture, choose the stable aperture being under the same terms and carry out the described calculating averaged. In other words, participating in outdoor environment temperature residing for the stable aperture of mean value calculation, outdoor environment temperature when starting shooting with this is identical. Again in other words, because outdoor environment temperature stablizes the impact of aperture for electric expansion valve, difference (such as daytime, night) for one day ambient temperature, can also be recorded comparing to the stable aperture that air-conditioner runs in different time sections, electric expansion valve is stablized pay the utmost attention to when aperture is calculated estimating identical use the time time electronic expansion valve opening record data. That is, when this is started shooting by day, the stable aperture participating in mean value calculation is preferably also the stable aperture of electric expansion valve when being daytime.
For the feature that annual variation of ambient temperature is bigger, choose the initial time of the stable aperture for mean value calculation, with this start interval time not easily too much, and the record that the electric expansion valve longer apart from this available machine time is stablized aperture is eliminated, to ensure the accuracy calculated.
The control method of the present invention suitable in: using electric expansion valve as any type air-conditioner of restricting element refrigerant circulation circuit, but it is preferred that, this air-conditioner can be transducer air conditioning.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations. All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (6)
1. the control method of electric expansion valve in an air-conditioner, it is characterised in that including:
During the start of each described air-conditioner, the stable aperture of electric expansion valve run being averaged, estimate aperture to obtain under the described air-conditioner at least twice model identical before this start, wherein said to estimate aperture equal with described meansigma methods;
When needing, after this start, the flow regulating described electric expansion valve, estimate aperture described in first the aperture of described electric expansion valve being directly adjusted to, be then adjusted to target aperture from described aperture of estimating,
Wherein, described target aperture after this start and described stablize aperture under described at least twice model identical before this start, is the aperture having when described electric expansion valve degree of superheat of evaporator outlet in described air-conditioner reaches the setting degree of superheat.
2. control method according to claim 1, it is characterised in that
Described model identical is any one in refrigeration mode, heating mode, dehumidification mode.
3. control method according to claim 1 and 2, it is characterised in that
With this start shooting time the set wind speed of described air-conditioner operating and described air-conditioner residing for the temperature of indoor environment for condition, stablize in aperture from all described at least twice model identical, choose the stable aperture being under the same terms and carry out the described calculating averaged.
4. control method according to claim 1 and 2, it is characterised in that
With the described air-conditioner outdoor environment temperature when this is started shooting for condition, stablize in aperture from all described at least twice model identical, choose the stable aperture being under the same terms and carry out the described calculating averaged.
5. control method according to claim 1, it is characterised in that
During after this start 2 to 4 minutes, just carry out the described aperture by described electric expansion valve and be directly adjusted to when this is started shooting and obtained and estimate aperture.
6. according to claim 1-2, control method according to any one of 5, it is characterised in that
Described air-conditioner is transducer air conditioning.
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| CN201210141760.5A CN102654338B (en) | 2012-05-09 | 2012-05-09 | The control method of electric expansion valve in air-conditioner |
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| CN201210141760.5A CN102654338B (en) | 2012-05-09 | 2012-05-09 | The control method of electric expansion valve in air-conditioner |
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| CN102654338B true CN102654338B (en) | 2016-06-01 |
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| CN104567154B (en) * | 2014-12-26 | 2017-01-04 | 珠海格力电器股份有限公司 | Throttling control method for centrifugal water chiller |
| CN106091341B (en) * | 2016-06-02 | 2019-03-01 | 青岛海尔空调器有限总公司 | Air conditioner supplying natural wind temperature control method |
| CN106322912B (en) * | 2016-08-31 | 2019-01-11 | 长虹美菱股份有限公司 | The control method of refrigerator electric expansion valve |
| CN106322870B (en) * | 2016-11-14 | 2019-04-05 | 广东美的暖通设备有限公司 | The control method and control device of electric expansion valve, air conditioner heat pump system |
| CN107576113B (en) * | 2017-09-22 | 2020-04-10 | 青岛海尔空调器有限总公司 | Control method and system of air conditioner under high-humidity heating working condition |
| CN107606835B (en) * | 2017-09-22 | 2020-07-31 | 青岛海尔空调器有限总公司 | Control method and system of air conditioner in refrigeration mode |
| CN109915989B (en) * | 2019-02-19 | 2022-04-29 | 广东美的暖通设备有限公司 | Refrigerant heat dissipation frequency converter starting method and device and air conditioner with same |
| 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 |
| CN113959051B (en) * | 2021-10-08 | 2023-08-15 | 青岛海尔空调电子有限公司 | Control method for air conditioner and air conditioner |
| CN115682355B (en) * | 2022-10-27 | 2024-09-27 | 珠海格力电器股份有限公司 | Air conditioning unit, control method and device of electronic expansion valve of air conditioning unit and storage medium |
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