CN1980051A - Motor driving device of business air conditioner indoor unit - Google Patents
Motor driving device of business air conditioner indoor unit Download PDFInfo
- Publication number
- CN1980051A CN1980051A CNA2005101221178A CN200510122117A CN1980051A CN 1980051 A CN1980051 A CN 1980051A CN A2005101221178 A CNA2005101221178 A CN A2005101221178A CN 200510122117 A CN200510122117 A CN 200510122117A CN 1980051 A CN1980051 A CN 1980051A
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- motor
- air conditioner
- control signal
- fan
- state relay
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- Control Of Positive-Displacement Air Blowers (AREA)
- Control Of Ac Motors In General (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The motor drive device includes component: motor speed control signal in use for controlling motor speed output from control part; current limiting resistance in use for limiting the motor speed control signal; through the current limiting resistance, control signal is connected to weak current control input end of solid state relay (SSR); after connecting output end of SSR, motor is connected to power source. Useful effects are: using SSR to drive motor of fan makes motor of fan obtain smooth sine wave voltage, reducing vibration of motor of fan, and noise generated by vibration, lowering cost about 30% so as to raise cost performance ratio.
Description
Technical field
The present invention relates to a kind of air conditioner room unit, particularly relate to a kind of motor driver of commercial air conditioner indoor unit.
Background technology
Air conditioner is a kind of device that makes its inner refrigerant carry out the refrigeration of being made up of compression process, condensation process, expansion process and evaporation process or heat circulation.
When air conditioner carries out kind of refrigeration cycle, cold-producing medium becomes high-temperature high-pressure state through compressor compresses, dispel the heat to the outside by condenser and outdoor fan, and when flowing through expansion valve, reduce its temperature and pressure, the evaporation when flowing through indoor evaporator of this low temperature, low pressure refrigerant can absorb heat then, becomes behind the gaseous state in the sucked back again compressor.Wherein, compression process, condensation process and expansion process are to carry out in the off-premises station of air conditioner, and evaporation process then is to carry out under the acting in conjunction of blowing fan in indoor set and evaporator.It is then opposite with above-mentioned kind of refrigeration cycle process by cross valve commutation back to heat circulation.
Air conditioner is divided into commercial use air conditioner and domestic air conditioner usually, the refrigerating capacity of commercial use air conditioner is bigger in general, is used for the large-scale centralized air-conditioning system more, as market, hotel, restaurant, office office building etc., and the refrigerating capacity of domestic air conditioner is smaller, uses more than family.Commercial use air conditioner is divided into two kinds of ceiling type and fan unit tubular types again.Because commercial use air conditioner is used for the bigger place of refrigerating capacity, also the air output than domestic air conditioner is big usually for its air output, thereby also needing the power of indoor fan motor to increase to some extent accordingly, the automatically controlled part of indoor fan is also wanted can the bigger motor of driving power.
The indoor machine fan motor of commercial use air conditioner adopts the bidirectional triode thyristor phase control method to drive mostly at present.Fig. 1 adopts bidirectional triode thyristor phase driven indoor machine fan Principle of Electric Engine figure in the prior art, the control signal V of control part (not shown) output is through current-limiting resistance R1, the size of control signal by being connected the capacitance-resistance phase-shift network of controllable silicon trigger electrode, be resistance R 2 and capacitor C 1, remove to trigger controllable silicon T, controllable silicon T then has the different angles of flow according to the size of triggering signal, make load motor obtain different voltage, then fan shows different wind speed, or a kind of variation speed more stably, the speed adjustable range of fan electromotor is little; Figure 2 shows that motor gets the piezoelectric voltage waveform, as can be seen from the figure: the voltage waveform that fan electromotor obtains is not level and smooth sine wave.
The indoor machine fan motor of commercial use air conditioner of the prior art adopts the bidirectional triode thyristor phase control method to have following shortcoming: adopt the speed adjustable range of bidirectional triode thyristor phase driven fan electromotor smaller, cost is higher, the voltage waveform that fan electromotor obtains is not level and smooth sine wave, thereby makes the fan electromotor vibration and produce noise by vibration.
Summary of the invention
Technical problem to be solved by this invention is, overcome the shortcoming of above-mentioned prior art, provide a kind of speed adjustable range of fan motor that can make big, cost is low, the voltage waveform that fan electromotor obtains is level and smooth sine wave, thereby makes fan electromotor reduce to vibrate and reduce the motor driver that is produced noise by vibration.
The technical solution adopted in the present invention is: a kind of motor driver of air conditioner room unit comprises: the motor speed control signal of the drive motors speed of control part output, in order to the current-limiting resistance of restriction motor speed control signal; Described control signal is inserted solid-state relay SSR light current control input end by described current-limiting resistance, and load motor is connected with power supply with the output serial connection back of solid-state relay SSR.
The model that described solid-state relay SSR selects for use is G3MB-202PLE-LG OMRON DC12V 2ATUV.
The invention has the beneficial effects as follows: owing to adopt solid-state relay SSR fan motor, the voltage waveform that fan electromotor is obtained is level and smooth sine wave, make fan electromotor vibration and the noise that produces by vibration reduce, and manufacturing cost has been reduced about 30%, the ratio of performance to price is improved.
Description of drawings
Fig. 1 is the fan electromotor drive principle figure in the prior art;
Fig. 2 gets the piezoelectric voltage oscillogram for the fan electromotor in the prior art;
Fig. 3 is fan electromotor drive principle figure of the present invention;
Fig. 4 gets the piezoelectric voltage oscillogram for fan electromotor of the present invention.
Embodiment
Fig. 3 is fan electromotor drive principle figure of the present invention, as shown in Figure 3, adopt up-to-date solid-state relay SSR type of drive, the control signal V of control part (not shown) output is through current-limiting resistance R1, the size of control signal is passed through solid-state relay SSR light current control input end, remove to control the light-emitting diode in the solid-state relay SSR light current control input end, light-emitting diode in the solid-state relay SSR light current control input end is varying in size according to the input control signal then, and have different luminous intensities, make solid-state relay SSR output have different conducting intensity, thereby make load fan electromotor RL show different wind speed, promptly at a high speed, middling speed, low speed, the speed adjustable range of fan electromotor RL is bigger, and the light current input of solid-state relay SSR and the mutual isolation of output are very high; Because it is linear relationship that the control ratio of solid-state relay SSR output and solid-state relay SSR light current control input end closes, the different conducting intensity of the output of solid-state relay only is the variation of supply power voltage amplitude size, the voltage waveform that fan electromotor RL is obtained is level and smooth sine wave, and the model of selecting solid-state relay SSR in the present embodiment for use is G3MB-202PLE-LG OMRON DC 12V 2ATUV.As shown in Figure 4, get the piezoelectric voltage oscillogram as can be seen from fan electromotor RL: the voltage waveform that fan electromotor obtains is level and smooth sine wave, this just make fan electromotor RL vibration and produce noise by vibration and reduce.
On the other hand: because the volume of solid-state relay SSR self is less, help making the area of whole printed substrate to reduce, both saved the manufacturing cost of printed substrate, help the miniaturization of automatically controlled part again.Also the cost of material is low than alternating-current bidirectional silicon controlled for the material cost of solid-state relay SSR in addition.It seems on the whole, the manufacturing cost of the indoor machine fan motor driver of commercial use air conditioner has been reduced about 30%, make it reach more performance price ratio.
Protection scope of the present invention is not limited thereto, and persons skilled in the art are according to all belonging within protection scope of the present invention than the large power, electrically machine actuating device that the technical program can be associated.
Claims (2)
1, a kind of motor driver of air conditioner room unit comprises: the motor speed control signal of the control motor speed of control part output, in order to the current-limiting resistance of restriction motor speed control signal; It is characterized in that: described control signal is inserted solid-state relay SSR light current control input end by described current-limiting resistance, and motor is connected with power supply with the output serial connection back of solid-state relay SSR.
2, the motor driver of air conditioner room unit according to claim 1 is characterized in that: the model that described solid-state relay SSR selects for use is G3MB-202PLE-LG OMRON DC12V 2A TUV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005101221178A CN1980051A (en) | 2005-12-05 | 2005-12-05 | Motor driving device of business air conditioner indoor unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005101221178A CN1980051A (en) | 2005-12-05 | 2005-12-05 | Motor driving device of business air conditioner indoor unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1980051A true CN1980051A (en) | 2007-06-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005101221178A Pending CN1980051A (en) | 2005-12-05 | 2005-12-05 | Motor driving device of business air conditioner indoor unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1980051A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607077A (en) * | 2012-03-29 | 2012-07-25 | 合肥荣事达三洋电器股份有限公司 | Microwave oven start control device and control method |
| CN103273821A (en) * | 2013-06-09 | 2013-09-04 | 胡晶 | Air conditioning system for parking of automobile |
-
2005
- 2005-12-05 CN CNA2005101221178A patent/CN1980051A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607077A (en) * | 2012-03-29 | 2012-07-25 | 合肥荣事达三洋电器股份有限公司 | Microwave oven start control device and control method |
| CN102607077B (en) * | 2012-03-29 | 2014-07-30 | 合肥荣事达三洋电器股份有限公司 | Microwave oven start control method |
| CN103273821A (en) * | 2013-06-09 | 2013-09-04 | 胡晶 | Air conditioning system for parking of automobile |
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| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |