CN104729022A - Variable frequency air conditioner unit starting frequency raising control method - Google Patents
Variable frequency air conditioner unit starting frequency raising control method Download PDFInfo
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- CN104729022A CN104729022A CN201510163974.6A CN201510163974A CN104729022A CN 104729022 A CN104729022 A CN 104729022A CN 201510163974 A CN201510163974 A CN 201510163974A CN 104729022 A CN104729022 A CN 104729022A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/54—Heating and cooling, simultaneously or alternatively
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses a variable frequency air conditioner unit starting frequency raising control method. The method comprises the key steps that a variable frequency compressor is started, the frequency is raised to an Fa platform with the speed of 1-3 Hz/s, and then the Fa platform operates stably by 90-120 s; middle temperature values of all condenser coils within the last 5-10 s of operation of the Fa platform are collected, and the average temperature value Tcm of the condenser coils within the period is calculated in a fitting mode; the speed of raising to an Fb platform of the frequency and the speed of subsequent frequency raising or frequency reducing to a target frequency of a compressor are determined according to the Tcm. By means of the method, the frequency raising speed of the variable frequency compressor when the compressor is started can be precisely determined.
Description
Technical field
The present invention relates to VRF Air Conditioning System, raising frequency control method when being specifically the startup of a kind of convertible frequency air-conditioner unit.
Background technology
For convertible frequency air-conditioner, raising frequency speed when frequency-changeable compressor starts is very crucial.Because the requirement of the load of different working environments to raising frequency speed is different.In hot environment or after the dirty heat exchange efficiency of each heat exchanger of air-conditioning longtime running reduces, system loading can increase, if now raising frequency excessive velocities, is easy to make system pressure too high and occur that high voltage protective is shut down.But under low temperature environment or the heat exchange efficiency of each heat exchanger of unit higher, when system loading is less, if raising frequency speed is excessively slow, then the object cannot reach fast-refrigerating, heating.But how prior art is determining that raising frequency speed also exists technological gap in this accurately, even to say objectively, how environmentally the operation conditions of temperature, each parts of unit self precisely confirms raising frequency speed, has become those skilled in the art technical barrier for many years of puzzlement row.
Summary of the invention
The technical problem to be solved in the present invention is, raising frequency control method when providing a kind of convertible frequency air-conditioner unit of raising frequency speed when can confirm that frequency-changeable compressor starts accurately to start.
Technical solution of the present invention is, raising frequency control method when providing a kind of convertible frequency air-conditioner unit to start, and its concrete steps are as follows:
A, receive power-on command after, frequency-changeable compressor starts, and rises to Fa platform with the speed of 1 ~ 3Hz/s, and stable operation 90 ~ 120s; And the whole condenser coil middle portion temperature value gathered in 5 ~ 10s that Fa platform finally runs, digital simulation goes out the condenser coil temperature mean value Tcm during this period of time; Then judge, as Tcm < 43 DEG C, then enter step b; As 43 DEG C≤Tcm < 46 DEG C, then enter step c; As 46 DEG C≤Tcm < 50 DEG C, then enter steps d; As 50 DEG C≤Tcm, then enter step e;
B, rise to Fb platform with the speed of 1 ~ 2Hz/s and run 60 ~ 80s at Fb platform, if target frequency is greater than the frequency of Fb platform, then rises to target frequency with the speed of 1 ~ 2Hz/s and run; If target frequency is less than the frequency of Fb platform, then drops to target frequency with the speed of 1Hz/0.5 ~ 3s and run;
C, rise to Fb platform with the speed of 1Hz/2 ~ 3s and run 60 ~ 80s at Fb platform, if target frequency is greater than the frequency of Fb platform, then rises to target frequency with the speed of 1Hz/2 ~ 4s and run; If target frequency is less than the frequency of Fb platform, then drops to target frequency with the speed of 1Hz/0.5 ~ 3s and run;
D, rise to Fb platform with the speed of 1Hz/4 ~ 8s and run 60 ~ 80s at Fb platform, if target frequency is greater than the frequency of Fb platform, then rises to target frequency with the speed of 1Hz/12 ~ 15s and run; If target frequency is less than the frequency of Fb platform, then drops to target frequency with the speed of 1Hz/0.5 ~ 3s and run;
E, rise to Fb platform with the speed of 1Hz/10 ~ 15s and run 60 ~ 80s at Fb platform, if target frequency is greater than the frequency of Fb platform, then rises to target frequency with the speed of 1Hz/25 ~ 35s and run; If target frequency is less than the frequency of Fb platform, then drops to target frequency with the speed of 1Hz/0.5 ~ 3s and run.
Adopt above method, when convertible frequency air-conditioner unit of the present invention starts, raising frequency control method compared with prior art, has the following advantages:
This controlling party ratio juris is: first run a period of time continually and steadily at Fa platform, make condensation temperature closer to condensation saturation temperature, again by gathering the condenser coil middle portion temperature of Fa platform final stage time, its digital simulation is gone out condensation mean temperature, convert thereof into condensing pressure again, compressor raising frequency speed is negotiated with this, that is, allow air-conditioning by master controller intelligent monitoring self heat exchange situation and bad environments degree, control raising frequency speed, make raising frequency speed reasonable, both too highly high voltage fault can not be caused, also can not too lowly cause cooling and warming excessively slow, make frequency fast and stable to Best Point, and then allow room temperature immediate stability, reduce unit power consumption, increase comfort level.
Accompanying drawing explanation
Fig. 1 is frequency-changeable compressor running frequency and the coordinate diagram of time of convertible frequency air-conditioner unit of the present invention raising frequency control method when starting.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figure 1, raising frequency control method when convertible frequency air-conditioner unit of the present invention starts, its concrete steps are as follows.
A, receive power-on command after, inside and outside fan starting, outer organic electronic expansion valve opening is adjusted to 200 ~ 320 steps.Frequency-changeable compressor starts, and rises to Fa platform with the speed of 1 ~ 3Hz/s, and stable operation 90 ~ 120s.Described Fa and follow-up Fb platform refer to, in the time range that this platform runs, compressor horsepower all-the-time stable remains unchanged.The frequency of Fa platform is 30 ~ 35Hz.
In Fa platform running, also need to gather the whole condenser coil middle portion temperature value in 5 ~ 10s that Fa platform finally runs, digital simulation goes out the condenser coil temperature mean value Tcm in 5 ~ 10s that Fa platform finally runs; Specifically, a temperature sensor is set in the middle part of the coil pipe of condenser exactly, in 5 ~ 10s that Fa platform finally runs, says that the temperature value of this temperature sensor all adds up, and calculate mean value and Tcm.
Then judge, as Tcm < 43 DEG C, then enter step b; As 43 DEG C≤Tcm < 46 DEG C, then enter step c; As 46 DEG C≤Tcm < 50 DEG C, then enter steps d; As 50 DEG C≤Tcm, then enter step e.
B, rise to Fb platform with the speed of 1 ~ 2Hz/s and run 60 ~ 80s at Fb platform, if target frequency is greater than the frequency of Fb platform, then rises to target frequency with the speed of 1 ~ 2Hz/s and run; If target frequency is less than the frequency of Fb platform, then drops to target frequency with the speed of 1Hz/0.5 ~ 3s and run.
C, rise to Fb platform with the speed of 1Hz/2 ~ 3s and run 60 ~ 80s at Fb platform, if target frequency is greater than the frequency of Fb platform, then rises to target frequency with the speed of 1Hz/2 ~ 4s and run; If target frequency is less than the frequency of Fb platform, then drops to target frequency with the speed of 1Hz/0.5 ~ 3s and run.
D, rise to Fb platform with the speed of 1Hz/4 ~ 8s and run 60 ~ 80s at Fb platform, if target frequency is greater than the frequency of Fb platform, then rises to target frequency with the speed of 1Hz/12 ~ 15s and run; If target frequency is less than the frequency of Fb platform, then drops to target frequency with the speed of 1Hz/0.5 ~ 3s and run.
E, rise to Fb platform with the speed of 1Hz/10 ~ 15s and run 60 ~ 80s at Fb platform, if target frequency is greater than the frequency of Fb platform, then rises to target frequency with the speed of 1Hz/25 ~ 35s and run; If target frequency is less than the frequency of Fb platform, then drops to target frequency with the speed of 1Hz/0.5 ~ 3s and run.
The running frequency of described Fb platform is 50 ~ 60Hz.
Claims (1)
1. raising frequency control method when convertible frequency air-conditioner unit starts, is characterized in that: its concrete steps are as follows:
A, receive power-on command after, frequency-changeable compressor starts, and rises to Fa platform with the speed of 1 ~ 3Hz/s, and stable operation 90 ~ 120s; And the whole condenser coil middle portion temperature value gathered in 5 ~ 10s that Fa platform finally runs, digital simulation goes out the condenser coil temperature mean value Tcm during this period of time; Then judge, as Tcm < 43 DEG C, then enter step b; As 43 DEG C≤Tcm < 46 DEG C, then enter step c; As 46 DEG C≤Tcm < 50 DEG C, then enter steps d; As 50 DEG C≤Tcm, then enter step e;
B, rise to Fb platform with the speed of 1 ~ 2Hz/s and run 60 ~ 80s at Fb platform, if target frequency is greater than the frequency of Fb platform, then rises to target frequency with the speed of 1 ~ 2Hz/s and run; If target frequency is less than the frequency of Fb platform, then drops to target frequency with the speed of 1Hz/0.5 ~ 3s and run;
C, rise to Fb platform with the speed of 1Hz/2 ~ 3s and run 60 ~ 80s at Fb platform, if target frequency is greater than the frequency of Fb platform, then rises to target frequency with the speed of 1Hz/2 ~ 4s and run; If target frequency is less than the frequency of Fb platform, then drops to target frequency with the speed of 1Hz/0.5 ~ 3s and run;
D, rise to Fb platform with the speed of 1Hz/4 ~ 8s and run 60 ~ 80s at Fb platform, if target frequency is greater than the frequency of Fb platform, then rises to target frequency with the speed of 1Hz/12 ~ 15s and run; If target frequency is less than the frequency of Fb platform, then drops to target frequency with the speed of 1Hz/0.5 ~ 3s and run;
E, rise to Fb platform with the speed of 1Hz/10 ~ 15s and run 60 ~ 80s at Fb platform, if target frequency is greater than the frequency of Fb platform, then rises to target frequency with the speed of 1Hz/25 ~ 35s and run; If target frequency is less than the frequency of Fb platform, then drops to target frequency with the speed of 1Hz/0.5 ~ 3s and run.
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105135619A (en) * | 2015-09-10 | 2015-12-09 | 深圳创维空调科技有限公司 | Frequency increasing method and system for variable frequency air conditioner |
| CN105135618A (en) * | 2015-09-10 | 2015-12-09 | 深圳创维空调科技有限公司 | Frequency increasing method and system for variable frequency air conditioner |
| CN105546760A (en) * | 2016-01-12 | 2016-05-04 | 芜湖美智空调设备有限公司 | Air conditioner, and control method and device for compressor of air conditioner |
| CN106322659A (en) * | 2016-08-23 | 2017-01-11 | 广东美的制冷设备有限公司 | Self-cleaning control method and device for evaporator of air conditioner |
| CN106500219A (en) * | 2016-11-24 | 2017-03-15 | 广东美的制冷设备有限公司 | Solar airconditioning and its control method, control device |
| CN106996665A (en) * | 2017-03-22 | 2017-08-01 | 珠海格力电器股份有限公司 | Compressor starting method and device and terminal |
| CN107448376A (en) * | 2017-07-31 | 2017-12-08 | 广东美的暖通设备有限公司 | Frequency-changeable compressor and its raising frequency control method, device and air conditioner |
| CN107525234A (en) * | 2017-08-17 | 2017-12-29 | 青岛海尔空调器有限总公司 | A kind of method and device of compressor of air conditioner frequency conversion protection |
| CN108534321A (en) * | 2018-03-31 | 2018-09-14 | 青岛海尔空调器有限总公司 | The control method of air-conditioning under refrigeration mode |
| CN109210680A (en) * | 2018-08-17 | 2019-01-15 | 奥克斯空调股份有限公司 | A kind of air-conditioning fast-refrigerating, the control method of heat and air conditioner |
| CN109579348A (en) * | 2018-12-04 | 2019-04-05 | 宁波工程学院 | The multi-functional multi-joint dry type capillary radiation heat pump unit of one kind and its control method |
| CN110486903A (en) * | 2019-08-15 | 2019-11-22 | 海信（山东）空调有限公司 | The control method and system of loaded self-adaptive when a kind of frequency-variable controller closed-loop start-up |
| CN110594979A (en) * | 2018-11-12 | 2019-12-20 | 杭州三花微通道换热器有限公司 | Control method of air conditioning system |
| CN110645682A (en) * | 2019-10-21 | 2020-01-03 | 宁波奥克斯电气股份有限公司 | Control method and device of air conditioner and air conditioner |
| CN112923505A (en) * | 2021-02-25 | 2021-06-08 | 宁波奥克斯电气股份有限公司 | Frequency control method and system for variable frequency air conditioner and air conditioner |
| CN113310186A (en) * | 2021-06-02 | 2021-08-27 | 四川长虹空调有限公司 | Control method for compressor at high temperature of variable frequency air conditioner coil pipe |
| CN113390163A (en) * | 2020-03-13 | 2021-09-14 | 青岛海尔空调电子有限公司 | Control method for raising frequency of compressor |
| CN113606741A (en) * | 2021-08-04 | 2021-11-05 | 宁波奥克斯电气股份有限公司 | Control method of compressor frequency, air conditioner and computer readable storage medium |
| CN113606758A (en) * | 2021-06-28 | 2021-11-05 | 杭州先途电子有限公司 | Control method, control device and outdoor controller of air conditioner |
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| CN105135618A (en) * | 2015-09-10 | 2015-12-09 | 深圳创维空调科技有限公司 | Frequency increasing method and system for variable frequency air conditioner |
| CN105135619B (en) * | 2015-09-10 | 2017-11-10 | 深圳创维空调科技有限公司 | A kind of raising frequency method and system of convertible frequency air-conditioner |
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| CN106996665B (en) * | 2017-03-22 | 2019-10-01 | 珠海格力电器股份有限公司 | Compressor starting method and device and terminal |
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| CN107448376A (en) * | 2017-07-31 | 2017-12-08 | 广东美的暖通设备有限公司 | Frequency-changeable compressor and its raising frequency control method, device and air conditioner |
| CN107525234A (en) * | 2017-08-17 | 2017-12-29 | 青岛海尔空调器有限总公司 | A kind of method and device of compressor of air conditioner frequency conversion protection |
| CN108534321A (en) * | 2018-03-31 | 2018-09-14 | 青岛海尔空调器有限总公司 | The control method of air-conditioning under refrigeration mode |
| CN109210680A (en) * | 2018-08-17 | 2019-01-15 | 奥克斯空调股份有限公司 | A kind of air-conditioning fast-refrigerating, the control method of heat and air conditioner |
| CN110594979A (en) * | 2018-11-12 | 2019-12-20 | 杭州三花微通道换热器有限公司 | Control method of air conditioning system |
| CN110594979B (en) * | 2018-11-12 | 2024-01-23 | 杭州三花微通道换热器有限公司 | Control method of air conditioning system |
| US11221158B2 (en) | 2018-11-12 | 2022-01-11 | Sanhua (Hangzhou) Micro Channel Heat Exchanger Co., Ltd. | Control method for air conditioning system, and air conditioning system |
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| CN110486903B (en) * | 2019-08-15 | 2021-09-28 | 海信（山东）空调有限公司 | Load self-adaption control method and system during closed-loop starting of variable frequency controller |
| CN110486903A (en) * | 2019-08-15 | 2019-11-22 | 海信（山东）空调有限公司 | The control method and system of loaded self-adaptive when a kind of frequency-variable controller closed-loop start-up |
| CN110645682B (en) * | 2019-10-21 | 2021-04-09 | 宁波奥克斯电气股份有限公司 | Control method and device of air conditioner and air conditioner |
| CN110645682A (en) * | 2019-10-21 | 2020-01-03 | 宁波奥克斯电气股份有限公司 | Control method and device of air conditioner and air conditioner |
| CN113390163A (en) * | 2020-03-13 | 2021-09-14 | 青岛海尔空调电子有限公司 | Control method for raising frequency of compressor |
| WO2021179790A1 (en) * | 2020-03-13 | 2021-09-16 | 青岛海尔空调电子有限公司 | Compressor frequency-rising control method |
| CN112923505A (en) * | 2021-02-25 | 2021-06-08 | 宁波奥克斯电气股份有限公司 | Frequency control method and system for variable frequency air conditioner and air conditioner |
| CN112923505B (en) * | 2021-02-25 | 2022-04-19 | 宁波奥克斯电气股份有限公司 | Frequency control method and system for variable frequency air conditioner and air conditioner |
| CN113310186A (en) * | 2021-06-02 | 2021-08-27 | 四川长虹空调有限公司 | Control method for compressor at high temperature of variable frequency air conditioner coil pipe |
| CN113606758A (en) * | 2021-06-28 | 2021-11-05 | 杭州先途电子有限公司 | Control method, control device and outdoor controller of air conditioner |
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