CN102868360B - A kind of temperature rise protection control method of motor and device thereof - Google Patents
A kind of temperature rise protection control method of motor and device thereof Download PDFInfo
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- CN102868360B CN102868360B CN201210328289.0A CN201210328289A CN102868360B CN 102868360 B CN102868360 B CN 102868360B CN 201210328289 A CN201210328289 A CN 201210328289A CN 102868360 B CN102868360 B CN 102868360B
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Abstract
The invention discloses a kind of temperature rise protection control method and device of motor, comprising: for detecting the transducer of the external environment temperature residing for motor; Motor; For the data of receiving sensor, and the central processing unit to output order control room internal fan motor operation rotating speed; Regulated the running speed suppressing motor by the external environment temperature detected residing for motor, thus suppress motor temperature to rise.Control method of the present invention and device, can external environment temperature comprehensively residing for motor on the impact of motor own temperature, effectively suppress motor temperature to rise fast, reduce motor start-stop repeatedly simultaneously, improve motor self reliability.
Description
Technical field
The present invention relates to field of motors, particularly a kind of temperature rise protection control method of motor, and realize the device of the method.
Background technology
The detection means of current motor temperature rise protection is the temperature sensor of motor therein, and this transducer detects present motor own temperature T ', if when own temperature T ' temperature is more than or equal to set point t, namely motor shuts down; During lower than set point t, restart running.Temperature rise protection is only undertaken by switching between motor OFF, ON, as shown in Figure 1.
But, because motor own temperature T ' and its place external environment have certain relation.When rotating speed is equal, ambient temperature is higher, and motor own temperature is also higher, and ambient temperature is lower, and motor own temperature is also lower.Meanwhile, ambient temperature is higher, and during motor operation, temperature rising is faster, and when ambient temperature is lower, motor own temperature rises relatively slow.So motor temperature rise protection and the external environment residing for operation have much relations.And prior art does not consider the impact of this external environment, when ambient temperature height, motor is easily simple directly to be judged to shut down according to own temperature, after temperature declines, again opens.Therefore, cause following two problems: temperature rise guard method is single, easily cause motor start-stop repeatedly, reliability worsens; Run under high indoor air temperature, motor directly stops, and without buffering, especially when being applied to air conditioner, all has harmful effect to refrigeration, heating performance.
Summary of the invention
For solving the problems of the technologies described above, the object of this invention is to provide a kind of temperature rise protection control method of motor, it can effectively suppress motor temperature to rise fast, reduces motor start-stop repeatedly, improves motor self reliability.
Another object of the present invention is to provide a kind of temperature rise protecting control device of motor.
The object of the present invention is achieved like this: a kind of temperature rise protection control method of motor, is characterized in that: regulated by the external environment temperature detected residing for motor and suppress its running speed, thus suppress motor temperature to rise.
Described being regulated by the external environment temperature detected residing for motor suppresses its running speed, the air-temperature sensor detection current outside ambient air temperature T by being located at external environment residing for motor, as the external environment indoor air temperature boundary value A DEG C of ambient temperature T >=default, the current running speed R of motor is suppressed.
As the external environment indoor air temperature boundary value A DEG C of external environment temperature T >=default, motor operation rotating speed R does not exceed default maximum M; As external environment temperature T < design temperature B DEG C, motor operation rotating speed runs according to usual set point.
Described motor is air conditioner indoor fan motor, as the external environment temperature boundary value A DEG C of external environment temperature T >=default, if the high wind rotating speed r in the air quantity rank of the current running speed R of motor >=set, then current running speed R is implemented to the correction of negative value C, rotating speed of target is R-C; As R < r, do not carry out correction, run according to current normal condition rotating speed; As external environment temperature T < design temperature B DEG C, motor operation rotating speed runs according to usual set point.
Described value A DEG C, the external environment temperature boundary preset is less than trigger temperatures when motor own temperature protection running stops.
Described motor is after the suppression running some time, and motor therein temperature reaches the trigger temperatures of himself temperature rise protection, and motor shuts down.
A temperature rise protecting control device for motor, is characterized in that comprising: for detecting the transducer of the temperature of external environment residing for motor; Motor; For the data of receiving sensor, and output order is controlled to the central processing unit of motor operation rotating speed.
Also comprise the temperature sensor of motor therein.
Described motor is air conditioner indoor fan motor.
Control method of the present invention and device, can the temperature of comprehensive external environment residing for motor on the impact of motor own temperature, effectively suppress motor temperature to rise fast, reduce motor start-stop repeatedly simultaneously, improve motor self reliability.
Accompanying drawing explanation
Fig. 1 is the flow chart of motor temperature rise guard method of the prior art;
Fig. 2 is the control flow chart of the embodiment of the present invention 1 correspondence;
Fig. 3 is the control flow chart of the embodiment of the present invention 2 correspondence;
Fig. 4 is the control flow chart of the embodiment of the present invention 2 correspondence.
Embodiment
The present invention is regulated by the temperature detecting external environment residing for motor and suppresses motor operation rotating speed, and then by suppressing rotating speed to suppress motor own temperature to rise, finally realizes the object of motor temperature rise protection.So, suppress motor operation rotating speed to realize the control method of temperature rising suppression, all within protection scope of the present invention by the temperature detecting external environment residing for motor.
The temperature rise protection control method of a kind of motor of the present invention, is regulated by the temperature detecting external environment residing for motor and suppresses its running speed, thus suppresses horse motor temperature to rise.
Regulated by the temperature detecting external environment residing for motor and suppress its running speed, the air-temperature sensor detection current outside ambient air temperature T by being located at external environment residing for motor, as the external environment temperature boundary value A DEG C of ambient temperature T >=default, the current running speed R of motor is suppressed.Namely reduce current running rotating speed R, it reduces amplitude size, needs experimentally to determine.When external environment temperature T is lower, motor operation rotating speed runs according to usual set point.
Consider the validity that temperature rise is protected, preferably, value A DEG C, the external environment temperature boundary preset is less than trigger temperatures when motor own temperature protection running stops.Motor is after the suppression running some time, if motor therein temperature continues to rise, reach the trigger temperatures of himself temperature rise protection, motor shuts down.
A temperature rise protecting control device for motor, comprising: for detecting the transducer of external environment temperature residing for motor; Motor; For the data of receiving sensor, and output order is controlled to the central processor CPU of motor operation rotating speed.Also comprise the temperature sensor of motor therein, if motor therein temperature after the suppression running some time can be made to continue to rise, when reaching the trigger temperatures of himself temperature rise protection, shut down.
Control method can be a variety of according to actual design, list concrete control flow below, but the present invention is not limited to this specific examples.
Embodiment 1
As shown in Figure 2, first detect external environment temperature T, as the external environment temperature boundary value A DEG C of external environment temperature T >=default, motor operation rotating speed R does not exceed default maximum M; As external environment temperature T < design temperature B DEG C, motor operation rotating speed runs according to usual set point.
Embodiment 2
This example is with air conditioner indoor fan motor for example, and the external environment temperature residing for air conditioner indoor fan motor, is indoor air temperature.Below in conjunction with Fig. 3, illustrate the content of the present embodiment with cold-room:
Under this operating state, the usual set point of motor is 1200rpm, and value A DEG C, default indoor air temperature boundary is 34 DEG C, and the maximum M preset is 1140rpm, and design temperature B DEG C is 32 DEG C.
In cold-room running, motor rotary speed is 1200rpm.Indoor suction transducer detects indoor air temperature, if indoor air temperature T >=34(A detected) DEG C time, then the maximum of indoor rotating speed is 1140rpm, namely now, even if setting speed is greater than 1140rpm(set 1200rpm), and motor real-world operation number is 1140rpm.If but indoor air temperature reduce, lower than 32(B) DEG C time, indoor motor according to setting 1200rpm operate.
Embodiment 3
This example is with air conditioner indoor fan motor for example, and the external environment temperature residing for air conditioner indoor fan motor, is indoor air temperature.As shown in Figure 4, first indoor air temperature T is detected, as the indoor air temperature boundary value A DEG C of indoor air temperature T >=default, by the field 1 of table 1, the rotating speed corresponding with intensity level wind in setting to current running speed compares, if the high wind rotating speed r in the air quantity rank of the current running speed R of indoor motor >=set, then implementing negative value C(the present embodiment negative value C to current running speed R is-40) correction, but winding number after this correction is minimum can not lower than the winding number (i.e. M-described in table 1) corresponding to air quantity rank gentle breeze; If high wind rotating speed r in the air quantity rank that indoor motor current running speed R < has set, then indoor motor operation rotating speed runs according to usual set point, and namely running speed is the rotating speed of normal setting; As indoor air temperature T < design temperature B DEG C, by the field 0 of table 1, do not carry out rotating ratio comparatively, indoor motor operation rotating speed runs according to usual set point.
Table 1.
Note: in the present embodiment, the air quantity rank of air conditioner is: the superpower wind of high wind < in super quiet < quiet wind < gentle breeze < high wind <.
Claims (3)
1. the temperature rise protection control method of a motor, it is characterized in that: detect current outside ambient air temperature T by the air-temperature sensor being located at external environment residing for motor, as the external environment temperature boundary value A DEG C of ambient temperature T >=default, suppress the current running speed R of motor, described value A DEG C, the external environment temperature boundary preset is less than trigger temperatures when motor own temperature protection running stops; Described motor is air conditioner indoor fan motor, as the external environment temperature boundary value A DEG C of external environment temperature T >=default, if the high wind rotating speed r in the air quantity rank of the current running speed R of motor >=set, then current running speed R is implemented to the correction of negative value C, rotating speed of target is R-C; As R < r, do not carry out correction, run according to current normal condition rotating speed; As external environment temperature T < design temperature B DEG C, motor operation rotating speed runs according to usual set point, the external environment temperature boundary value A DEG C that this design temperature B DEG C of < presets.
2. the temperature rise protection control method of motor according to claim 1, is characterized in that: as the external environment temperature boundary value A DEG C of external environment temperature T >=default, and motor operation rotating speed R does not exceed default maximum M; As external environment temperature T < design temperature B DEG C, motor operation rotating speed runs according to usual set point.
3. the temperature rise protection control method of motor according to claim 1, is characterized in that: described motor is after the suppression running some time, and motor therein temperature reaches the trigger temperatures of himself temperature rise protection, and motor shuts down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210328289.0A CN102868360B (en) | 2012-09-06 | 2012-09-06 | A kind of temperature rise protection control method of motor and device thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210328289.0A CN102868360B (en) | 2012-09-06 | 2012-09-06 | A kind of temperature rise protection control method of motor and device thereof |
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| Publication Number | Publication Date |
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| CN102868360A CN102868360A (en) | 2013-01-09 |
| CN102868360B true CN102868360B (en) | 2015-09-23 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759397B (en) * | 2014-02-10 | 2019-05-07 | 广州松下空调器有限公司 | A kind of control method of air conditioner room unit rotation speed of the fan |
| CN103759396B (en) * | 2014-02-10 | 2019-05-07 | 广州松下空调器有限公司 | A kind of indoor fan method for controlling number of revolution of air conditioner |
| CN106487320B (en) * | 2016-11-02 | 2019-02-26 | 珠海格力电器股份有限公司 | PG motor control method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2200444A (en) * | 1986-10-23 | 1988-08-03 | Toshiba Kk | Air conditioner system with heating operation assist function |
| CN1081243A (en) * | 1992-07-09 | 1994-01-26 | 煜丰企业有限公司 | A kind of micro-computer controlling apparatus for air conditioner system |
| CN2276679Y (en) * | 1996-05-09 | 1998-03-18 | 吕德清 | Multifunction motor safeguard |
| CN1253260A (en) * | 1998-10-29 | 2000-05-17 | 煜丰企业有限公司 | Energy-variable air conditioner with additional by-pass ventilation |
-
2012
- 2012-09-06 CN CN201210328289.0A patent/CN102868360B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2200444A (en) * | 1986-10-23 | 1988-08-03 | Toshiba Kk | Air conditioner system with heating operation assist function |
| CN1081243A (en) * | 1992-07-09 | 1994-01-26 | 煜丰企业有限公司 | A kind of micro-computer controlling apparatus for air conditioner system |
| CN2276679Y (en) * | 1996-05-09 | 1998-03-18 | 吕德清 | Multifunction motor safeguard |
| CN1253260A (en) * | 1998-10-29 | 2000-05-17 | 煜丰企业有限公司 | Energy-variable air conditioner with additional by-pass ventilation |
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