CN1865795A - Fan motor controller of air conditioner - Google Patents
Fan motor controller of air conditioner Download PDFInfo
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- CN1865795A CN1865795A CNA2006100826483A CN200610082648A CN1865795A CN 1865795 A CN1865795 A CN 1865795A CN A2006100826483 A CNA2006100826483 A CN A2006100826483A CN 200610082648 A CN200610082648 A CN 200610082648A CN 1865795 A CN1865795 A CN 1865795A
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- fan motor
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- Air Conditioning Control Device (AREA)
Abstract
The provided high-comfort air conditioner comprises: an ac fan motor (3), a control microcomputer (1) for motor (3), and a thyristor with zero-crossing detection function, wherein as the control signal and power are not synchronous in period, this invention does not generate rotation fluctuation, vibration or noise.
Description
Technical field
The present invention relates to control the air regulator that freezes, heats, particularly the control device that the rotating speed of the ac fan motor that is used for air-supply arrangement is controlled by microcomputer.
Background technology
In the air regulator that freezes, heats,, in the off-premises station of air regulator, carry out the rotating speed control of fan motor according to the various operational modes settings of refrigeration, heating and the temperature of indoor and outdoor.At present, as the method for controlling number of revolution of ac fan motor, known have a phase control method.Fig. 4 is the overall structure figure of the revolution speed control device of the existing phase controlling shown in the patent documentation 1, and Fig. 5 is the control flow chart in the existing revolution speed control device.
In Fig. 4, the 61st, AC power, an end of AC power 61 links by bidirectional triode thyristor 62 and ac motor 63, and the other end is connected with ac motor 63 and zero crossing time detecting unit 67.The output of zero crossing time device detecting unit 67 is connected with phase controlling output unit 66.Rotation speed detection unit 64 is connected with ac motor 63, and the output of rotation speed detection unit 64 is connected with phase controlling output unit 66 by output decision unit 65.The output of phase controlling output unit 66 is connected with bidirectional triode thyristor 62.
Then, use flow chart shown in Figure 5 that the action of rotating speed control is described.In step S101, detect the rotating speed of current ac motor 63 by rotation speed detection unit 64.In step S102, to compare by rotating speed and the prior rotating speed of target of setting that rotation speed detection unit 64 is exported, when outside the permissible range of rotating speed at rotating speed of target, in step S103, by zero crossing time detecting unit 67 and phase controlling output unit 66, making staggers with the last time for the position of the trigger point of zero crossing time sets the angle of flow, makes bidirectional triode thyristor 62 actions for making ac motor 63 near rotating speed of target, and returns step S101.In addition, in step S 102, when in the permissible range of rotating speed at rotating speed of target, in step S104, do not change the setting of the angles of flow, and return step S101 by phase control unit 66.
In addition, prior art as rotating speed control, for example in patent documentation 2, disclose, opened/has turn-offed the dutycycle of the switching signal of control to being connected switch between AC power and the electric current motor, opened/turn-offed the method that this switch is controlled rotating speed by changing.By the technology of this citing document 2, irrespectively open/stopcock with the zero crossing of power supply wave shape.
According to the existing control method shown in the above-mentioned citing document 1, shown in Fig. 3 (b),, when switch element is opened, flow through rapid inrush current owing to when supply voltage is beyond zero cross point, open switch element.Therefore, there is the problem that produces higher hamonic wave and noise owing to this inrush current.In addition, under defined terms, for each cycle of power supply wave shape, current on time is (in the example of Fig. 3 (b), t2 fixes for each cycle under regulation controlled condition) of fixing, fixedly producing rotary pulse in the specific frequency of current on time based on this, therefore, exist to produce vibration and noise, bring problems such as discomfort to the user.
Summary of the invention
The present invention proposes in order to address the above problem, its purpose is to provide a kind of fan motor controller of air regulator, it is opened/turn-offs by the zero cross point in AC power, rapid inrush current is disappeared suppress higher hamonic wave and generating noise, in addition, by the current on time to motor is changed randomly, can make vibration and noise under CF is Min..
In order to solve described problem, the present invention mainly adopts following structure.
Possess have compressor, the off-premises station of cross valve, outdoor heat converter; Indoor set with two-way valve, indoor heat converter; Connect in the air regulator of pipeline of described off-premises station and described indoor set, its structure is: described off-premises station has according to the operational mode of refrigeration and heating to be set and the temperature of indoor and outdoor, is carried out the ac fan motor that rotating speed is controlled; The fan motor drive unit drives that the thyristor of the zero cross detection function of described ac fan motor by having described AC power waveform constitutes; Have control signal decision unit in the upstream of described fan motor driver element one side, it is according to the temperature of described operational mode setting and described indoor and outdoor, and decision is to the switch element control signal of described thyristor; By described switch element control signal and described zero cross detection function, the half-wave composition that begins with the zero crossing from described AC power waveform is the energising unit, randomly described AC power is opened/is turn-offed and carry out described rotating speed and control.
According to the present invention, can eliminate the noise, vibration and the noise that cause by the rotating speed control of ac fan motor, can improve the comfortableness and the commodity of air regulator.
Description of drawings
Fig. 1 is the block diagram of general structure of fan motor controller of the air regulator of expression embodiments of the present invention.
Fig. 2 is the flow chart of action of the fan motor controller of expression present embodiment.
Fig. 3 is by the control mode of embodiments of the present invention and the control mode of prior art are compared the waveform sequential chart of representing.
Fig. 4 is the distribution block diagram of fan motor controller of the air regulator of expression prior art.
Fig. 5 is the flow chart of action of fan motor controller of the air regulator of expression prior art.
The specific embodiment
Below, with reference to Fig. 1～Fig. 3, the fan motor controller of the air regulator of embodiments of the present invention is elaborated.Fig. 1 is the block diagram of general structure of fan motor controller of the air regulator of expression embodiment of the present invention.Fig. 2 is the flow chart of action of the fan motor controller of expression present embodiment.Fig. 3 is by the control mode of embodiment of the present invention and the control mode of prior art are compared the waveform sequential chart of representing.
In Fig. 1, the 3rd, the fan motor that fan is rotated, the 4th, the rotation speed detection unit of the rotating speed of detection fan motor 3, the 8th, with the desired speed of fan motor 3 (operational mode during according to refrigeration and heating or the temperature or the ac power frequency of indoor and outdoor, the rotating speed of the time predesignating in design) and the rotating speed of detected reality compare, export the rotating speed comparing unit of its speed discrepancy, the 9th, the control signal amending unit, it is according to the speed discrepancy output from rotating speed comparing unit 8, dutycycle to the control signal of the rotating speed that is used to control fan motor 3 is revised, the 5th, the zero crossing time detecting unit of the zero crossing time of detection source power supply, the 6th, according to zero cross signal, judge the source power supply frequency identifying unit of source power supply frequency (50Hz or 60Hz) from zero crossing time detecting unit 5.
In addition, the 7th, according to output and the various operational modes of air regulator and the temperature of indoor and outdoor of source power supply frequency identifying unit 6, decide among the EEPROM that is stored in microcomputer 1, can be under the situation of 50Hz or 60Hz the unit of the control data of the control data of drive fan motor 3 decision the most efficiently, (this control data is the switching signal of opening/turn-offing, the dutycycle of opening/turn-offing by decisions such as tests in advance, corresponding with the data of the switch element control signal of Fig. 3 described later).At this, microcomputer 1 is made of source power supply frequency identifying unit 6, control data decision unit 7, rotating speed comparing unit 8 and control signal amending unit 9.
In addition, the 2nd, according to output, make the fan motor driver element of fan motor 3 rotations from control signal amending unit 9.Fan motor driver element 2 is semiconductor elements of built-in zero cross detection function, for example, also can use solid-state relay (SSR) (this SSR is the structure that contains bidirectional triode thyristor in inside).This semiconductor element is in the control signal of input when being opened, by built-in zero cross circuit alternating voltage be no-voltage near triggering, bidirectional triode thyristor is open-minded.Then, when control signal is turn-offed, load current by bidirectional triode thyristor the locking effect, load current be zero near (remaining to zero) turn-off.
In other words, as known to the oscillogram of Fig. 3 described later (a), in the switch element control signal when opening, when the source power supply zero crossing, open the power supply of zero crossing, in case open-minded, then with this control signal open/turn-off irrelevant, open up to next zero crossing the power supply locking.When the source power supply zero crossing, if control signal for turn-offing, is then turn-offed power supply next time.
Then, according to the program flow diagram of Fig. 2, the action of the fan motor controller of present embodiment is described.When program begins, in step S11, will input to source power supply frequency identifying unit 6 by the zero cross pulse of zero crossing time detecting unit 5 detected source power supplies.Then, by the time interval of source power supply frequency identifying unit 6 mensuration zero cross pulses, in step S12 50Hz or the judgement of 60Hz.According to this result, in step S13, decision is used the control data of the predefined 50Hz of being used for or is used for which of control data of 60Hz.Here, in control data decision unit 7, as previously mentioned, preestablish control data, and based on the control data of this setting, the frequency according to source power supply decides control data again according to the temperature environment of various operational modes and indoor and outdoor.
Though fan motor 3 serves as that the basis is driven in S14 with the control data that is determined among the step S13, but because this control data and power cycle are exported asynchronously, so shown in Fig. 3 (a), current on time to fan motor 3 is 100% in period T 1, is 50% variation so randomly in period T 2.In other words, in Fig. 3 (a), the control data of representing as the switch element control signal and the cycle of source power supply fully irrespectively are set (temperature, source power supply frequency with operational mode, indoor and outdoor are that the basis is set independently), therefore even under identical controlled condition (operational mode, temperature, supply frequency are identical), current on time is also inequality in period T 1 and period T 2.Relative therewith, in the prior art, shown in Fig. 3 (b), bidirectional triode thyristor triggering signal and power cycle as control data are synchronously exported, under identical controlled condition, it is fixed value that fan motor applies the voltage waveform current on time, and the voltage that applies of this same waveform as produces vibration and noise in its specific frequency.
Like this, when hypothesis applies under the fixing situation of the current on time of voltage or when vibration takes place intrinsic frequency at fan motor, in the prior art, should vibration continue constantly with this intrinsic frequency is corresponding, but in the present embodiment, shown in Fig. 3 (a), even fan motor applies voltage under identical controlled condition, because the cycle of energising is unfixing, therefore vibration does not continue.
When reference Fig. 3 (a) repeats to describe particularly, " switch element control signal " shown in the stage casing of Fig. 3 (a), it is output signal from control data decision unit 7, this output signal is the signal synchronous with power cycle with respect to " the bidirectional triode thyristor triggering signal " shown in Fig. 3 (b), do not have any dependence with the wave period of AC power, being control data decision unit 7 has opening/cut-off signals of any dutycycle according to what its input signal independently determined.According to this switch element control signal with from the AC power zero cross signal of zero cross circuit built-in in the thyristor, generate the voltage (form of this generation as mentioned above) of each half-wave composition of AC power, apply voltage (the hypomere figure of Fig. 3 (a)) as fan motor and be applied on the fan motor.
At this, when the dutycycle of switch element control signal being carried out variable when control (though the change of dutycycle is basically according to the determining method of control data decision unit 7, but outside this, also can change) according to output signal from rotating speed comparing unit 8, at the power cycle (T1 or T2 among Fig. 3 (a)) of each regulation, the number of the half-wave composition of energising changes.In object lesson shown in Figure 3, be 100% energising in the T1 cycle, be 50% energising (,, then being 25% energising) in the T2 cycle if 1 half-wave composition is energising in the T2 cycle.Like this, control data decision unit 7 100% energising cycle as described above and 50% energising cycle occur according to the fixing output valve based on its input signal data decision, and vibration does not continue thus.(under the situation of described fixing output valve) at this moment, the method according to the waveform shaping of switch element control signal can suitably design the energising cycle that each T1 or T2 cycle are a few percent.One of feature of the present invention is: under the controlled condition fixing from the output valve of control data decision unit 7 (the certain output valve of words that controlled condition changes also changes), the half-wave composition that begins with the zero crossing from AC power waveform is the energising current potential, open randomly/switching off AC power (at each suitable power cycle, open rightly/the half-wave composition of switching off AC power), come fan motor is carried out rotating speed control.
Then, detect rotating speed in step S15, the dutycycle of Correction and Control data makes detected rotating speed become the rotating speed of setting according to the difference of the rotating speed of rotating speed of predefined regulation in step S16, S17 and detected reality.Then, turn back to step S14, repeat this circulation.In addition, air regulator is as its basic structure, possesses by pipeline and will have the kind of refrigeration cycle that the off-premises station of compressor, cross valve, expansion valve or capillary and outdoor heat converter etc. is connected with the indoor set with two-port valve and indoor heat converter etc.
As mentioned above, in embodiments of the present invention, open at thyristor/when turn-offing, be provided with the zero crossing time measuring ability, open/turn-off by zero cross point with control signal is irrelevant, inrush current is disappeared suppress higher hamonic wave and generating noise in AC power.In addition, by the cycle that makes control signal and AC power asynchronous (Parameter Map 3 (a)), to current on time (1/2 circulating unit of supply frequency) variation randomly of motor, making the vibration of CF and noise is Min..
And, in the present embodiment, different with phase controlling, if the decision of having made a 50Hz/60Hz by the zero crossing time detecting unit (for example, the use of air regulator begins the initial stage once), afterwards, owing to do not need the input of commercial frequency signal to control, even so superimposed noise can not impact the rotating speed control of fan motor yet on source power supply, (in the existing control mode shown in Fig. 3 (b), when superimposed noise hypothesis becomes zero on source power supply, the generation of zero cross signal is brought influence, therefore the waveform that fan motor is applied voltage generates and brings bad influence).
So, being characterized as of the fan motor controller of the air regulator of embodiments of the present invention: possess: between ac motor and AC power, connect, have the semiconductor switch of zero crossing time measuring ability; Output open/turn-off this semiconductor switch, with the nonsynchronous control signal of supply frequency, by changing the dutycycle of this control signal, control the control part of the rotating speed of ac motor.
Being characterized as of the fan motor controller of present embodiment: possess: zero crossing time detecting unit with the zero crossing time that detects AC power, according to output, judge the frequency identifying unit of the frequency of AC power from this zero crossing time detecting unit; According to the frequency of judging by this frequency identifying unit, the control data decision unit of control data that decision is used the control data of the predefined 50Hz of being used for or is used for 60Hz is (as input signal, the temperature that refrigeration, the various operational modes settings of heating and indoor and outdoor are arranged, in addition, also with the frequency of AC power as input signal).
In addition, being characterized as of the fan motor controller of present embodiment: possess: the rotation speed detection unit that detects the rotating speed of ac motor; The rotating speed comparing unit that will compare by the rotating speed of the detected reality of this rotation speed detection unit and the regulation rotating speed of predesignating (according to the rotating speed of design item decision); According to output, revise the dutycycle of the control signal open/turn-off semiconductor switch, the unit that the rotating speed of ac motor is maintained fixed from this rotating speed comparing unit.
Claims (4)
1. the fan motor controller of an air regulator is characterized in that,
Possessing: off-premises station with compressor, cross valve, outdoor heat converter; Indoor set with two-port valve, indoor heat converter; Connect in the air regulator of pipeline of described off-premises station and described indoor set,
Described off-premises station has according to the operational mode of refrigeration and heating and the temperature of indoor and outdoor, is carried out the ac fan motor of rotating speed control;
Described ac fan motor drives by the fan motor driver element that thyristor constituted by the zero cross detection function of the waveform with described AC power;
Described fan motor driver element upstream one side have that decision is set based on described operational mode and described indoor and outdoor temperature, determine the unit to the control signal of the switch element control signal of described thyristor;
By described switch element control signal and described zero cross detection function, the half-wave composition that begins with the zero crossing from described AC power waveform is the energising unit, opens/turn-offs described AC power randomly and carry out described rotating speed control.
2. the fan motor controller of air regulator according to claim 1 is characterized in that, the waveform that inputs to the described switch element control signal of described thyristor and described AC power is asynchronous.
3. the fan motor controller of air regulator according to claim 1 is characterized in that,
Detect the actual speed of described ac fan motor, described detected actual speed and predefined rotating speed are compared try to achieve speed discrepancy, according to the dutycycle of the described switch element control signal of described speed discrepancy correction.
4. according to the fan motor controller of claim 1,2 or 3 any described air regulators, it is characterized in that,
Be provided with the zero crossing time detecting unit of the zero crossing time that detects described AC power, the frequency of described AC power is judged in use by the detected zero crossing time of described detecting unit, by the described ac power frequency that determines being inputed to described control signal decision unit, described ac power frequency becomes a decisive factor of described switch element control signal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005146986 | 2005-05-19 | ||
| JP2005146986A JP2006322675A (en) | 2005-05-19 | 2005-05-19 | Fan motor controller of air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1865795A true CN1865795A (en) | 2006-11-22 |
Family
ID=37424894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100826483A Pending CN1865795A (en) | 2005-05-19 | 2006-05-19 | Fan motor controller of air conditioner |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2006322675A (en) |
| CN (1) | CN1865795A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865125A (en) * | 2009-04-17 | 2010-10-20 | 鸿富锦精密工业（深圳）有限公司 | Test method of fan module |
| CN101652922B (en) * | 2007-04-10 | 2012-08-22 | 大金工业株式会社 | Fan motor controller and fan motor control method |
| CN104214895B (en) * | 2014-08-22 | 2017-01-11 | 珠海格力电器股份有限公司 | Constant-temperature dehumidification control method and system for air conditioner |
| CN111780377A (en) * | 2020-06-16 | 2020-10-16 | 珠海格力电器股份有限公司 | Fan rotating speed control method and device and air conditioning equipment |
| CN112214050A (en) * | 2019-07-09 | 2021-01-12 | 西门子瑞士有限公司 | Temperature compensation method for actuator and actuator |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007212107A (en) * | 2006-02-13 | 2007-08-23 | Orion Mach Co Ltd | Cooling device |
-
2005
- 2005-05-19 JP JP2005146986A patent/JP2006322675A/en not_active Withdrawn
-
2006
- 2006-05-19 CN CNA2006100826483A patent/CN1865795A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101652922B (en) * | 2007-04-10 | 2012-08-22 | 大金工业株式会社 | Fan motor controller and fan motor control method |
| CN101865125A (en) * | 2009-04-17 | 2010-10-20 | 鸿富锦精密工业（深圳）有限公司 | Test method of fan module |
| CN101865125B (en) * | 2009-04-17 | 2014-01-15 | 鸿富锦精密工业（深圳）有限公司 | Test method of fan module |
| CN104214895B (en) * | 2014-08-22 | 2017-01-11 | 珠海格力电器股份有限公司 | Constant-temperature dehumidification control method and system for air conditioner |
| CN112214050A (en) * | 2019-07-09 | 2021-01-12 | 西门子瑞士有限公司 | Temperature compensation method for actuator and actuator |
| CN112214050B (en) * | 2019-07-09 | 2022-07-08 | 西门子瑞士有限公司 | Temperature compensation method for actuator and actuator |
| CN111780377A (en) * | 2020-06-16 | 2020-10-16 | 珠海格力电器股份有限公司 | Fan rotating speed control method and device and air conditioning equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006322675A (en) | 2006-11-30 |
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