CN1755267A - Method for controlling fan electromotor of air conditioner - Google Patents
Method for controlling fan electromotor of air conditioner Download PDFInfo
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- CN1755267A CN1755267A CN 200410072272 CN200410072272A CN1755267A CN 1755267 A CN1755267 A CN 1755267A CN 200410072272 CN200410072272 CN 200410072272 CN 200410072272 A CN200410072272 A CN 200410072272A CN 1755267 A CN1755267 A CN 1755267A
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Abstract
The invention relates to fan motor control method of air conditioner, which is characterized by the following: when several hall sensors don't detect the fan motor rotary or rotary quantity over the normal error scope, the air conditioner will stop driving. Hence, the invention can detect the imperfect condition of fan motor driving and part of hall sensors, which guarantees the reliability of fan motor control.
Description
Technical field
The present invention relates to the fan electromotor of air-conditioner, a kind of method for controlling fan electromotor of air-conditioner (Fan motor controlling method of air conditioner) particularly, make it can detect the defective mode of the driving of fan electromotor, and simultaneously the defective mode of the Hall element that is used to detect said fans motor rotation number is detected, thereby can guarantee the reliability of said fans Electric Machine Control.
Background technology
In general, air-conditioner is that the room air that sucks is handled, and supplies to building or room, with the indoor device that is held in comfortable environment.It includes: compressor reducer is transformed to HTHP with the gaseous coolant of low-temp low-pressure; Condenser is emitted heat towards periphery, makes the gaseous coolant of HTHP be condensed into liquid refrigerants; Expansion gear, will be by above-mentioned condenser the liquid refrigerants of condensation, be expanded to the bifurcation refrigerant of gaseous state and the liquid low-temp low-pressure that mixes; Evaporimeter, the heat around absorbing makes above-mentioned bifurcation refrigerant evaporate with gaseous state; Outdoor blower and indoor blower are to above-mentioned condenser and vaporizer side blow air; Microcomputer is used to control said compressor and expansion gear, and outdoor blower and indoor blower.
Above-mentioned indoor blower and outdoor blower include blowing fan and fan electromotor, by microcomputer control said fans motor, thus the air-supply power of adjusting said fan.
In addition, according to design conditions such as the capacity of air-conditioner, installation site, surrounding environment, the said fans motor can be installed polytype, simultaneously according to existing service condition, and suitably controls the driving and the rotary speed of said fans motor by above-mentioned microcomputer.
That is, above-mentioned microcomputer carries out ON/OFF control to the power supply of supplying with in the fan electromotor, thus the driving of decision said fans motor.Simultaneously, by the power supply size of supplying with in the conversion said fans motor, make it change the rotary speed of said fans motor.
Fig. 4 demonstrates the flow chart of the method for controlling fan electromotor in the prior art.
As shown in Figure 4, the method for controlling fan electromotor of the air-conditioner in prior art is connected power supply in the air-conditioner, and passes through above-mentioned microcomputer when the fan electromotor supply power, and the said fans motor begins to drive.(with reference to S1, S2)
At this moment, the indoor conditions required, the power supply size of supplying with in the above-mentioned microcomputer conversion said fans motor, thereby the rotary speed of regulating the said fans motor according to the user.
When the said fans motor drives by microcomputer, the turn-sensitive device that is installed on the said fans motor will detect the rotation number (RPM) of said fans motor, and according to the detected value of above-mentioned turn-sensitive device, and the driving of above-mentioned air-conditioner is suitably regulated.(with reference to S3, S4, S5)
That is, when the said fans motor began to drive, above-mentioned turn-sensitive device detected the rotation number (RPM) of fan electromotor, and sends it in the above-mentioned microcomputer.Above-mentioned microcomputer compares the detected value and the desired value of above-mentioned turn-sensitive device, and regulates the power supply size of supplying with in the fan electromotor, makes the rotation number of said fans motor reach desired value.
Thus, air-conditioner is suitably regulated the said fans motor by feedback (feedback) effect of above-mentioned turn-sensitive device and microcomputer, and it can normally be operated.
Wherein, as the turn-sensitive device of the rotation number that detects the said fans motor, and use the Hall element that utilizes magnetic pole usually.Above-mentioned a plurality of Hall element is installed on the said fans motor, when the said fans motor is rotated, has spherical wave, above-mentioned microcomputer then to analyze spherical wave and calculates the rotation number of said fans motor to the input of above-mentioned microcomputer by above-mentioned a plurality of Hall elements.
Simultaneously, when above-mentioned Hall element did not detect the rotation number of fan electromotor, above-mentioned microcomputer then was judged as fan electromotor and is in the driving defective mode, and stopped the driving operation of above-mentioned air-conditioner.
The method for controlling fan electromotor of the air-conditioner in prior art by the state that the detected value that transmits in above-mentioned a plurality of Hall elements has or not, can detect the defective mode of the driving of said fans motor.But, when the part Hall element generation defective mode in above-mentioned a plurality of Hall elements, then can't the rotation number of fan electromotor be detected, thereby causes above-mentioned microcomputer to control the driving operation of said fans motor inadequately.
Promptly, when the several Hall element generation defective mode in above-mentioned a plurality of Hall elements, the rotation number of the fan electromotor that detects by above-mentioned Hall element, will be different with the rotation number of the actual rotation of said fans motor, above-mentioned microcomputer is then controlled the driving of fan electromotor according to the rotation number of the fan electromotor of wrong detection, thereby reduces the reliability of said fans Electric Machine Control.
Simultaneously, when above-mentioned part Hall element broke down, the user can't grasp the defective mode of above-mentioned Hall element, thereby delayed the maintenance operation to above-mentioned Hall element, and reduced the performance of above-mentioned air-conditioner thus.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of method for controlling fan electromotor of air-conditioner, make it can detect the defective mode of the driving of fan electromotor, and simultaneously the defective mode of the Hall element that is used to detect said fans motor rotation number is detected, thereby can guarantee the reliability of said fans Electric Machine Control, simultaneously, show the defective mode of said fans motor and the defective mode of Hall element, thereby make the user can confirm above-mentioned defective mode easily to the user.
To achieve these goals, the method for controlling fan electromotor of the air-conditioner among the present invention is characterized in that including following several steps: the fan electromotor actuation step, and by the air-conditioner control of microcomputer, connect power supply in the fan electromotor and begin driving; Rotation number detects step, detects the rotation number of the fan electromotor that drives in the said fans motor-driven step; The rotation number comparison step detects the detection rotation number of the fan electromotor that detects in the step with above-mentioned rotation number, and the fan electromotor normal rotation number corresponding with the power supply of importing in the said fans motor-driven step compares; The mistake step display in above-mentioned rotation number comparison step, when being judged as above-mentioned rotation number and normal rotation number not simultaneously, shows its error condition to display part; Step out of service shows that in above-mentioned wrong step display above-mentioned air-conditioner will stop to drive in the error condition.
Method for controlling fan electromotor according to air-conditioner among the present invention of as above structure, when the rotation status that does not detect fan electromotor by a plurality of Hall elements, or the detection rotation number of fan electromotor is when exceeding the error range of normal rotation number, and air-conditioner will stop to drive.Thus, can detect the defective mode of the driving of fan electromotor, and simultaneously the defective mode of the part Hall element in above-mentioned a plurality of Hall elements be detected, thereby can guarantee the reliability of said fans Electric Machine Control.
And, when detecting the defective mode of fan electromotor and Hall element, the error condition of said fans motor and Hall element will be shown in the display part of air-conditioner, thereby can conveniently confirm the defective mode of above-mentioned Hall element, and make the user can carry out corresponding operation rapidly.
Description of drawings
Fig. 1 demonstrates the indoor set stereogram of the detachable air conditioner among the present invention.
Fig. 2 demonstrates the simple block diagram that is used to control the fan electromotor structure of the detachable air conditioner among the present invention.
Fig. 3 demonstrates the flow chart of the method for controlling fan electromotor among the present invention.
Fig. 4 demonstrates the flow chart of the method for controlling fan electromotor in the prior art.
The critical piece description of reference numerals
52: support (base) 54: shell (cabinet)
56: air suction inlet 58: air outlet
60: front panel 62: indoor blower
64: heat exchanger 66: the upper front plate
67: lower front panel 68: suction panel
70: operating portion 72: Hall element
74: microcomputer 76: display part
78: fan electromotor
The specific embodiment
Embodiment among the present invention is described with reference to the accompanying drawings.
Fig. 1 demonstrates the indoor set stereogram of the detachable air conditioner among the present invention, and Fig. 2 demonstrates the simple block diagram that is used to control the fan electromotor structure of the detachable air conditioner among the present invention, and Fig. 3 demonstrates the flow chart of the method for controlling fan electromotor among the present invention.
As Fig. 1 or shown in Figure 2, the indoor set of the detachable air conditioner among the present invention includes: support 52; Shell 54 is arranged at the upside of above-mentioned support 52, and its front becomes open state; Front panel 60 is installed on the front of above-mentioned shell 54, and is formed with air suction inlet 56 and air outlet 58; Indoor blower 62 is arranged between above-mentioned shell 54 and the front panel 60, is used to provide the suction and the required air-supply power of discharging operation of room air; Evaporimeter 64 is arranged between above-mentioned blower 62 and the air outlet 58, and the air that is blown into above-mentioned air outlet 58 by above-mentioned indoor blower 62 is carried out refrigerating operation.
Above-mentioned front panel 60 includes: front upper panel 66, and its both sides tilt to protrude, and it is formed with front outlet 58a in top in front, and two upper lateral parts then are formed with both sides outlet 58b; Front lower panel 67 is arranged between the front of the front of above-mentioned front upper panel 66 and above-mentioned support 52; Suck grid 68, be arranged between the bottom of above-mentioned front lower panel 67 and above-mentioned shell 54, be used to protect the inside of above-mentioned air suction inlet 56.
For the room air that makes suction is blown into above-mentioned evaporimeter 64 easily, above-mentioned indoor blower 62 will be installed on from close shell 54 bottoms of above-mentioned suction grid 68, and with the set distance of being separated by above the above-mentioned support 52.
Above-mentioned indoor blower 62 is by blowing fan and fan electromotor 78 and constitute.Said fans motor 78 is regulated the air-supply power of said fan under the control action of microcomputer 74.That is, the power supply of supplying with in 74 pairs of fan electromotors 78 of above-mentioned microcomputer carries out ON/OFF control, thus the driving of decision said fans motor 78.Simultaneously, by the power supply size of supplying with in the conversion said fans motor 78, make it change the rotary speed of said fans motor 78.
As shown in Figure 2, the structure that is used to control fan electromotor of above-mentioned detachable air conditioner includes: operating portion 70 makes the user regulate the driving of said fans motor; Microcomputer 74 according to the signal of user by 70 inputs of aforesaid operations portion, is controlled the driving of said fans motor 78; Hall element 72 is used to detect the driving condition of the fan electromotor 78 that drives by above-mentioned microcomputer 74; Display part 76 shows the detected value of above-mentioned Hall element 72 to the user.
More than 72 of above-mentioned Hall elements are arranged in the fan electromotor 78, and above-mentioned microcomputer 74 is according to the detected value of above-mentioned Hall element 72, whether the rotation of said fans motor 78 is reached rotation number etc. judge, thereby control the driving of said fans motor 78 again.
Be the center with accompanying drawing 3 below, the method for controlling fan electromotor of air-conditioner among the present invention of as above structure is described.
At first, in the fan electromotor actuation step, connect power supply in the air-conditioner, said fans motor 78 drives by the power supply of connecting.(with reference to S80, S81)
Particularly, the fan electromotor 78 that is installed on the indoor uses BLDC motor (Brushless DCMotor, BLDC Motor), above-mentioned BLDC motor is when driving, its mechanical nose and electrical noise are less and can realize miniaturization, simultaneously, can smooth and easyly carry out high speed and low speed rotation, and moment of torsion (torque) is bigger.
Thus, power switch when user's push portion 70, make and connect power supply in the air-conditioner, and when pressing the operating switch of aforesaid operations portion 70 simultaneously, microcomputer 74 will produce pulse (pulse) signal, ON/OFF ratio according to above-mentioned pulse signal forms DC voltage, and above-mentioned DC voltage then is input to fan electromotor 78, thereby makes said fans motor 78 begin rotation with certain rotation number.
Detect in the step in rotation number, the rotation number of the fan electromotor 78 that drives in said fans motor-driven step will detect by Hall element 72, and judge whether to detect the rotation status of said fans motor 78 by above-mentioned Hall element 72.(with reference to S82, S83, S87)
That is, a plurality of Hall elements 72 are installed in the said fans motor 78, make when 78 rotations of said fans motor, above-mentioned a plurality of Hall elements 72 will detect the rotation number RPM of fan electromotor 78.Simultaneously, above-mentioned a plurality of Hall elements 72 are the rotation number of fan electromotor 78, are sent in the above-mentioned microcomputer 74 with the signal of spherical wave shape.
Wherein, when input does not have the spherical wave signal in the above-mentioned microcomputer 74, represent that then the rotation of said fans motor 78 is not detected by Hall element 72, stop to drive thereby be judged as said fans motor 78.At this moment, to the drive error state of display part 76 demonstration fan electromotors 78, above-mentioned microcomputer 74 stops the driving of air-conditioner simultaneously.
Above-mentioned display part 76 can use LED and LCD LCD etc.
In the rotation number comparison step, above-mentioned rotation number detects the detection rotation number of the fan electromotor 78 in the step, and the fan electromotor 78 normal rotation numbers corresponding with the power supply of importing in the said fans motor-driven step compare.
Above-mentioned detection rotation number is to detect in the step in above-mentioned rotation number, detects and be sent to the rotation number of the fan electromotor 78 of above-mentioned microcomputer by Hall element 72; Above-mentioned normal rotation number is in said fans motor-driven step, the fan electromotor 78 normal rotation numbers of the power supply correspondence of input in the said fans motor 78.
Above-mentioned normal rotation number and is calculated by above-mentioned microcomputer 74 automatically according to the power supply of input in the fan electromotor 78.When above-mentioned air-conditioner dispatches from the factory, preset the rotation number of the input power supply correspondence of fan electromotor 78, make when in said fans motor 78, connecting power supply, above-mentioned microcomputer 74 is calculated the normal rotation number of the fan electromotor 78 of input power supply correspondence.
And above-mentioned microcomputer 74 judges whether above-mentioned detection rotation number is present in the allowable error scope of normal rotation number.
In wrong step display, when the above-mentioned detection rotation number in being judged as above-mentioned rotation number comparison step exceeds the allowable error scope of normal rotation number, will show the detection error condition of Hall element 72 in the above-mentioned display part 76.(with reference to S86, S88)
That is, when the whole operate as normal of a plurality of Hall element 72, above-mentioned detection rotation number is present in the allowable error scope of normal rotation number; And when defective mode took place in above-mentioned a plurality of Hall elements 72 any one, above-mentioned detection rotation number was then because the detection mistake of Hall element 72, and exceeded the allowable error scope of above-mentioned normal rotation number.
Thus, above-mentioned microcomputer 74 receives the rotation number of the fan electromotor 78 that includes error condition, stops the operation of air-conditioner in order to prevent the 78 unsuitable drivings of said fans motor.Simultaneously, show that in above-mentioned display part 76 Hall element 72 detects error condition, makes the user confirm the defective mode of above-mentioned Hall element 72.
Certainly, when above-mentioned detection rotation number was present in the allowable error scope of normal rotation number, above-mentioned microcomputer 74 control air-conditioners normally drove.
Claims (6)
1, a kind of method for controlling fan electromotor of air-conditioner is characterized in that, comprising:
The fan electromotor actuation step by the air-conditioner control of microcomputer, is connected power supply and is begun driving in the fan electromotor;
Rotation number detects step, detects the rotation number of the fan electromotor that drives in the said fans motor-driven step;
The rotation number comparison step detects the detection rotation number of the fan electromotor that detects in the step with above-mentioned rotation number, and the fan electromotor normal rotation number corresponding with the power supply of importing in the said fans motor-driven step compares;
The mistake step display in above-mentioned rotation number comparison step, when being judged as above-mentioned rotation number and normal rotation number not simultaneously, shows its error condition to display part;
Step out of service shows that in above-mentioned wrong step display above-mentioned air-conditioner will stop to drive in the error condition.
2, the method for controlling fan electromotor of air-conditioner according to claim 1 is characterized in that:
In said fans motor-driven step, the said fans motor is made of the BLDC direct current generator, and according to the dc source that the pulse signal of above-mentioned microcomputer forms, is rotated with certain rotation number.
3, the method for controlling fan electromotor of air-conditioner according to claim 1 and 2 is characterized in that:
Detect in the step in above-mentioned rotation number, when not detecting the rotation number of said fans motor, in above-mentioned display part, behind the drive error state of demonstration fan electromotor, carry out step out of service.
4, the method for controlling fan electromotor of air-conditioner according to claim 3 is characterized in that:
Detect in the step in above-mentioned rotation number, a plurality of Hall elements are installed in the said fans motor, and the detection rotation number when detecting the fan electromotor rotation by above-mentioned a plurality of Hall elements.
5, according to the method for controlling fan electromotor of claim 1 or 4 described air-conditioners, it is characterized in that:
In above-mentioned rotation number comparison step, according to the power supply of supplying with in the said fans motor-driven step, above-mentioned Microcomputer Calculation goes out the normal rotation number of corresponding fan electromotor, and compare, thereby judge whether above-mentioned detection rotation number is present in the allowable error scope of normal rotation number with detection rotation number that above-mentioned rotation number detects the fan electromotor that detects in the step.
6, the method for controlling fan electromotor of air-conditioner according to claim 5 is characterized in that:
Preset the normal rotation number of fan electromotor of the input power supply correspondence of fan electromotor in the above-mentioned microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410072272 CN1755267A (en) | 2004-09-29 | 2004-09-29 | Method for controlling fan electromotor of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410072272 CN1755267A (en) | 2004-09-29 | 2004-09-29 | Method for controlling fan electromotor of air conditioner |
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| Publication Number | Publication Date |
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| CN1755267A true CN1755267A (en) | 2006-04-05 |
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| CN 200410072272 Pending CN1755267A (en) | 2004-09-29 | 2004-09-29 | Method for controlling fan electromotor of air conditioner |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112240625A (en) * | 2019-07-18 | 2021-01-19 | 日立江森自控空调有限公司 | Air conditioning system and abnormality detection system |
| CN112240624A (en) * | 2019-07-18 | 2021-01-19 | 日立江森自控空调有限公司 | Air conditioning system and abnormality detection system |
| CN115235183A (en) * | 2022-07-28 | 2022-10-25 | 珠海格力电器股份有限公司 | Refrigerator, and control method, device and system of odor remover |
-
2004
- 2004-09-29 CN CN 200410072272 patent/CN1755267A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112240625A (en) * | 2019-07-18 | 2021-01-19 | 日立江森自控空调有限公司 | Air conditioning system and abnormality detection system |
| CN112240624A (en) * | 2019-07-18 | 2021-01-19 | 日立江森自控空调有限公司 | Air conditioning system and abnormality detection system |
| CN115235183A (en) * | 2022-07-28 | 2022-10-25 | 珠海格力电器股份有限公司 | Refrigerator, and control method, device and system of odor remover |
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