CN102155778B - Direct current variable frequency air conditioner control method for protecting frequency converter module - Google Patents
Direct current variable frequency air conditioner control method for protecting frequency converter module Download PDFInfo
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- CN102155778B CN102155778B CN 201110067199 CN201110067199A CN102155778B CN 102155778 B CN102155778 B CN 102155778B CN 201110067199 CN201110067199 CN 201110067199 CN 201110067199 A CN201110067199 A CN 201110067199A CN 102155778 B CN102155778 B CN 102155778B
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Abstract
The invention discloses a direct current variable frequency air conditioner control method for protecting a frequency converter module, which comprises the following steps of: after a control device of an air conditioner receives a stop signal, judging whether the frequency when a compressor is stopped is smaller than 160Hz: if so, stopping normally; if not, constantly maintaining an electronic expansion valve of an indoor unit at 200 pulses after the stop signal of the indoor unit is received; when an outdoor fan receives the stop signal of the indoor unit, judging after the outdoor fan operates at high operation speed for 0.5 to 2 minutes: if the temperature of the frequency converter module is not more than t DEG C, stopping the outdoor fan; and if the temperature of the frequency converter module is more than t DEG C, keeping the outdoor fan operate continuously and stopping the outdoor fan until the temperature of the frequency converter module is not more than t DEG C, wherein t is smaller than or equal to the permitted maximal temperature value of the frequency converter module and is adjustable; compared with the existing methods, the method of the invention has the characteristic that ultrahigh temperature of the frequency converter module can be prevented effectively, thereby realizing long service life of the frequency converter module, low energy consumption and good operating stability of air conditioner.
Description
Technical field:
The present invention relates to the air-conditioning control field, specifically refer to a kind of control method of DC frequency converting air-conditioner protection frequency converter module.
Background technology:
At present, along with constantly popularizing of low-carbon environment-friendly theory, convertible frequency air-conditioner obtains numerous consumer's favors because of efficient energy-saving, environmental-friendly and comfortable, so the sales volume of convertible frequency air-conditioner increases year by year.Convertible frequency air-conditioner is compared topmost difference with conventional domestic air conditioning be to have increased the frequency converter module, and the price of frequency converter module is higher, accounts for a big chunk of whole air-conditioning price, therefore protection frequency converter module just seems particularly important in convertible frequency air-conditioner.When but the control method of the DC frequency converting air-conditioner of prior art is shut down at full load high frequency (referring to that generally power frequency is more than or equal to 160Hz), indoor and outdoor fan is all shut down, and the temperature of frequency converter module is higher at this moment, exceed the maximum temperature values that frequency converter allows, when then the frequency converter module is in this condition of high temperature for a long time, the easy premature aging of circuit and components and parts, power consumption is higher, so the service life of frequency converter module is shorter, energy consumption is higher; While outside condenser or the problem that evaporimeter easy occurrence temperature in outside is too high or temperature is excessively low cause operation of air conditioner unstable.
Summary of the invention:
The present invention is directed to above problem provides a kind of and can effectively prevent frequency converter module excess Temperature, and then so that frequency converter module service life is long, energy consumption is low and the control method of preferably DC frequency converting air-conditioner protection of operation of air conditioner stability frequency converter module.
The present invention overcomes the above problems used technical scheme: the control method that a kind of DC frequency converting air-conditioner protection frequency converter module is provided, it may further comprise the steps: after the control device of air-conditioning is received stopping signal, whether the frequency when judging compressor shutdown is less than 160Hz: be, then orderly closedown; No, then after receiving the indoor set off signal, the indoor set electric expansion valve keeps 200 pulses always; When outdoor fan is received the indoor set stopping signal, judge after 0.5～2 minute with the running of high wind shelves: if temperature≤t ℃ of frequency converter module then shut down; If frequency converter module＞t ℃, then outdoor fan remains in operation, until temperature≤t ℃ of just shutdown of frequency converter module; The maximum temperature values that described t allows less than or equal to the frequency converter module, and can regulate.
After adopting above method, compared with prior art, the present invention is because when the compressor high frequency of air-conditioning was shut down, outdoor fan was judged after 0.5～2 minute with high wind shelves running: if temperature≤t ℃ of frequency converter module then shut down; If frequency converter module＞t ℃, then outdoor fan remains in operation, until temperature≤t ℃ of just shutdown of frequency converter module; The maximum temperature values that described t allows less than or equal to the frequency converter module, and can regulate, the phenomenon of the maximum temperature value that allows when then the temperature of frequency converter module just can not occur surpassing design, each circuit of frequency converter module and components and parts also just are not easy to occur the phenomenon of premature aging, and power consumption is also just lower; Simultaneously outside condenser or outside evaporimeter in the situation that outdoor fan work on a period of time, be not easy the problem that occurrence temperature is too high or temperature is excessively low, therefore can prevent effectively that excess Temperature from appearring in the outside condenser, cause that pressure is excessive to cause the problem that miscellaneous equipment breaks down on the pipeline; Can prevent effectively that also the outside evaporating temperature is excessively low, cause the too small liquid that reaches back of pressure to cause the miscellaneous equipment problem that breaks down.Therefore the present invention has and can effectively prevent frequency converter module excess Temperature, and then so that frequency converter module service life is long, energy consumption is low and operation of air conditioner stability advantage preferably.
Described t is 60.
Described outdoor fan was with high wind shelves running 1 minute.
The specific embodiment:
Below in conjunction with the specific embodiment, the present invention is described further:
Embodiment 1
Below in conjunction with above-mentioned direct-current variable-frequency multi-connection central air conditioner system control method of the present invention is elaborated:
When air-conditioning moves, after the control device of air-conditioning is received stopping signal, judge that frequency when compressor 1 is shut down is whether less than 160Hz: be, then orderly closedown under heating mode; No, then after receiving the indoor set off signal, indoor set electric expansion valve 6 keeps 200 pulses always; When outdoor fan is received the indoor set stopping signal, judge after 0.5 minute take high wind shelves running: if temperature≤t ℃ of frequency converter module (default value of general t is as 60) then shut down; If frequency converter module＞t ℃, then outdoor fan remains in operation, until temperature≤t ℃ of just shutdown of frequency converter module; The maximum temperature values that described t allows less than or equal to the frequency converter module, and can regulating, namely t can adjust according to the permission operating ambient temperature value scope of the different model frequency converter module of each manufacturer production.Other the operation all mode with the air-conditioning routine of prior art is identical.
Embodiment 2
When air-conditioning moves, after the control device of air-conditioning is received stopping signal, judge that frequency when compressor 1 is shut down is whether less than 160Hz: be, then orderly closedown under the refrigeration/dehumidification pattern; No, then after receiving the indoor set off signal, indoor set electric expansion valve 6 keeps 200 pulses always; When outdoor fan is received the indoor set stopping signal, judge after 2 minutes take high wind shelves running: if temperature≤t ℃ of frequency converter module (this routine t is as 50) then shut down; If frequency converter module＞t ℃, then outdoor fan remains in operation, until temperature≤t ℃ of just shutdown of frequency converter module; The maximum temperature values that described t allows less than or equal to the frequency converter module, and can regulate.
Embodiment 3
When air-conditioning moves, after the control device of air-conditioning is received stopping signal, judge that frequency when compressor 1 is shut down is whether less than 160Hz: be, then orderly closedown under heating mode; No, then after receiving the indoor set off signal, indoor set electric expansion valve 6 keeps 200 pulses always; When outdoor fan is received the indoor set stopping signal, judge after 1 minute take high wind shelves running: if temperature≤t ℃ of frequency converter module (this routine t is as 65) then shut down; If frequency converter module＞t ℃, then outdoor fan remains in operation, until temperature≤t ℃ of just shutdown of frequency converter module; The maximum temperature values that described t allows less than or equal to the frequency converter module, and can regulate.
Above embodiment only is preferred embodiment of the present invention, and the present invention is not limited only to above embodiment and has also allowed other structural change, allly changes in rights to independence claimed range of the present invention, all belongs to protection domain of the present invention.
Claims (3)
1. the control method of DC frequency converting air-conditioner protection frequency converter module, it is characterized in that: it may further comprise the steps:
After the control device of air-conditioning was received stopping signal, whether the frequency when judging compressor shutdown was less than 160Hz: be, then orderly closedown; No, then after receiving the indoor set off signal, the indoor set electric expansion valve keeps 200 pulses always; When outdoor fan is received the indoor set stopping signal, judge after 0.5～2 minute with the running of high wind shelves: if temperature≤t ℃ of frequency converter module then shut down; If frequency converter module＞t ℃, then outdoor fan remains in operation, until temperature≤t ℃ of just shutdown of frequency converter module; The maximum temperature values that described t allows less than or equal to the frequency converter module, and can regulate.
2. DC frequency converting air-conditioner according to claim 1 is protected the control method of frequency converter module, and it is characterized in that: described t is 60.
3. the control method of DC frequency converting air-conditioner protection frequency converter module according to claim 1 is characterized in that: judgement after described outdoor fan turned round 1 minute with high wind shelves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110067199 CN102155778B (en) | 2011-03-15 | 2011-03-15 | Direct current variable frequency air conditioner control method for protecting frequency converter module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110067199 CN102155778B (en) | 2011-03-15 | 2011-03-15 | Direct current variable frequency air conditioner control method for protecting frequency converter module |
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| CN102155778A CN102155778A (en) | 2011-08-17 |
| CN102155778B true CN102155778B (en) | 2013-05-01 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105444328B (en) * | 2014-07-21 | 2019-01-15 | 青岛海尔空调器有限总公司 | Control the method that air conditioner is shut down |
| CN105546754B (en) * | 2016-01-04 | 2019-07-19 | 广东美的暖通设备有限公司 | Temprature control method, device and the air-conditioning of frequency converter |
| CN107152767B (en) * | 2017-06-12 | 2020-12-15 | 广东美的暖通设备有限公司 | Control method and device of air conditioner and computer readable storage medium |
| CN110671776B (en) * | 2019-09-23 | 2020-11-13 | 珠海格力电器股份有限公司 | Method, device and equipment for controlling outdoor unit of non-communication air conditioning unit and storage medium |
| CN110848898B (en) * | 2019-10-11 | 2021-02-12 | 珠海格力电器股份有限公司 | Control method for preventing air conditioner load conversion from stopping, computer readable storage medium and air conditioner |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3616946B2 (en) * | 1998-03-19 | 2005-02-02 | 三菱電機株式会社 | Electric motor drive device and compressor using the device |
| JP3870887B2 (en) * | 2002-09-30 | 2007-01-24 | 松下電器産業株式会社 | Air conditioner |
| CN1888646B (en) * | 2005-06-27 | 2010-05-12 | 乐金电子(天津)电器有限公司 | Variable frequency air conditioner and controlling method thereof |
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Address after: 315191 Zhejiang city of Ningbo province Yinzhou District Jiangshan town Light Road No. 1166 Patentee after: NINGBO AUX ELECTRIC CO., LTD. Address before: 315191 Zhejiang city of Ningbo province Yinzhou District Jiangshan town Light Road No. 1166 Patentee before: Ningbo AUX Electric Co., Ltd. |