CN2916469Y - Automatic dust-collecting device of outdoor unit of air conditioner - Google Patents
Automatic dust-collecting device of outdoor unit of air conditioner Download PDFInfo
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- CN2916469Y CN2916469Y CN 200420114810 CN200420114810U CN2916469Y CN 2916469 Y CN2916469 Y CN 2916469Y CN 200420114810 CN200420114810 CN 200420114810 CN 200420114810 U CN200420114810 U CN 200420114810U CN 2916469 Y CN2916469 Y CN 2916469Y
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Abstract
An automatic dust removal device on air-conditioning outdoor unit namely a device improved at air-conditioning outdoor unit of overhead traveling vehicle is provided. A motor (1) used for driving fan blades (2) is arranged inside a condenser (3); the reverse motor (1) reversely drives fan blades (2) to remove gathered dust on the air-conditioning condenser. Reverse rotation of the motor (1) is controlled by a PLC, inside which the combination of a timer and a counter is used to realize automatic dust removal in two states, namely, when electrically powered and when air-conditioning of the traveling vehicle is in continuous operation state. This device connects an circuit of a three-phase motor for driving the fan blades to the three-phase power supply through a contactor KM7 to realize reverse rotation by means of exchanging the sequence of inlet wires of three-phase. Under the control of PLC, the contactor KM7 is set in certain conditions to automatically stop obverse rotation of the fan blades, start the process of dust removal by reverse drive, and arranged protection procedures. The utility model can remove adhesions on the air-conditioning outdoor condenser, avoid insecurity of manual dust removal, reduce manual clean-up time, and extend service life of the air-conditioner.
Description
(1) technical field
The utility model system is used for the air conditioner of high-altitude driving, especially for a kind of improved device of the outdoor machine part of air conditioner.
(2) background technology
The air-conditioning of high-altitude driving is generally used under the occasion of high dust, be in than in the adverse circumstances, high temperature, a large amount of dust iron filings or the like, cause bridge crane air conditioning to be installed after, off-premises station descends greatly owing to dust makes refrigeration in very short time, and the damage of motor or the like.
According to observation and the detection to the driving environment for use, one is used the electric disc trumpet cooler, the outer bridge crane air conditioning of overbottom pressure about 50～100Pa of machine.Be put in sealing effectiveness and reach the converter mill that band pushes up more than 60%, in converter side (being as the criterion) 50 meters scopes with the fire door direction, the speed of adhering to of the fin attachment of air-conditioning unit condenser is 0.2mm/ hour, that is to say, if air-conditioning darg 8 hours, the attachment of condenser will reach 1～2mm, and the heat exchange efficiency of condenser will descend 10%～30%.The complete machine cold descends 30%～45%, compressor exhaust temperature rises 3 ℃～5 ℃, and condensing pressure rises, and also exists simultaneously because the attachment adhering zone is inhomogeneous, cause the condenser surface heat exchange inhomogeneous, have a strong impact on the efficient of condenser and the service life of compressor.
For dedusting, the general measure of adopting is manually to clean and drifting dust, but both labor intensive of this mode, belong to work high above the ground again, have potential safety hazard, because bridge crane air conditioning generally is loaded on the crossbeam of driving, need the cleanup crew climb, approaching, clean, insecurity is bigger.
(3) summary of the invention
The purpose of this utility model, plan provides a kind of improved device of air-conditioner outdoor unit dedusting, does not adopt artificial outside backwashing manner, does not add attachment device especially, reduces the cost of making and using.
The purpose of this utility model so realizes, be configured in the inboard of condenser by motor, fan blade, it is characterized in that, motor is connected three phase mains by positive contactor with counter-rotating contactor two-way respectively, the refrigeration power switch connects the input of PLC cooling activation, and the inlet wire order of counter-rotating contactor is opposite with positive contactor;
PLC blower fan counter-rotating output connects the counter-rotating contactor, connects motor then.
The PLC blower fan is just transferring out the positive contactor of connection, connects motor then.
The compressor contactor connects compressor.
The mode that adopts is the motor counter-rotating, but as motor counter-rotating simply, can not obtain suitable blast and air quantity, in case careless manipulation often causes the damage of electric components, even burn out abominable accident such as motor, reliable in order to guarantee when the dedusting, adopted special electric automatic control components and parts PLC assembly, the realization of this function is fully automatically, does not need any manual intervention.
Require the motor blower fan of outdoor air-conditioning can satisfy air quantity, the blast requirement of condenser heat exchange when forward rotation, impeller makes reverse wind on parts such as condenser when reverse rotation simultaneously, plays the effect of clean room exterior part.Because of the fan blade inclination angle of common centrifugal motor generally is no more than 33 degree, when motor reversed, blast was too little, was not enough to blow out the dust in the condenser.Therefore, the fan blade inclination angle is designed to the novel blades of 35 degree to 45 degree scopes, just changeing through the fan blade that experiment showed, this angle can be normally, fully extraneous natural air is introduced condenser, plays cold-producing medium effect in the cooler condenser; When the fan blade counter-rotating can be blown away the dust dust stratification of removing condenser surface again well.By the regular automatic reverse air-out of motor, the thing that sticks on the evaporimeter is disposed, make off-premises station exempt the time that hand sweeping is safeguarded, prolonged the service life of air-conditioning.
The circuit design of this device is connected to three phase mains with the circuit that drives the three phase electric machine of fan blade by the counter-rotating contactor, and the order of transposing three-phase inlet wire makes the inlet wire order of counter-rotating contactor anti-with positive phase inversion, and motor is realized counter-rotating.
The counter-rotating contactor carries out programming Control by the PLC programming, sets certain condition, and stopping fan blade automatically just changes, and reverse drive is carried out dedusting cleaning flow process, and defence program is set.
Timer sum counter by PLC inside is used in combination realization automation dedusting, mainly contains following two kinds of dedusting methods:
1. after connecting the power supply start, the input of PLC cooling activation is closed, and then counter-rotating output (9) is connected, and makes the counter-rotating contactor coil conducting of outdoor motor, thereby makes outdoor motor counter-rotating dedusting.After continuous service is enough to the time of dust out, cut off counter-rotating output automatically, make outdoor motor stop counter-rotating, air-conditioning enters normal operating condition;
2. be in the continuous running status at bridge crane air conditioning, then controller meeting self-clocking reaches official hour when running time, then cuts off and just transfers out, moves the dedusting action simultaneously once.After finishing the dedusting action, get back to normal operating condition automatically.This process circulation is carried out, and every interval official hour carries out once.
Outdoor motor and compressor adopt same contactor control in the prior art electric control system; in order to prevent to change the phase sequence rear motor and compressor reverses simultaneously; promptly forbid compressor reverse rotation and be damaged; so compressor and motor are controlled by contactor KM4 and KM5 respectively; simultaneously write the relevant PLC program, realize defencive function according to the logic restricting relation of each external contact and inner contact.The introducing of defencive function has improved the electrical safety performance of bridge crane air conditioning, has reduced the accident odds, for safety in production provides guarantee.
After having used a kind of air-conditioner outdoor unit automatic dust removing apparatus of the utility model structure, the thing that sticks that is on the outdoor condenser of the bridge crane air conditioning device in high-altitude is eliminated, and makes off-premises station reduce the time that hand sweeping is safeguarded, has also prolonged the service life of air-conditioning.
(4) description of drawings
Fig. 1 is the configuration structure schematic diagram of a kind of air-conditioner outdoor unit automatic dust removing apparatus that the utility model proposes.
Fig. 2 is that the air-conditioner outdoor unit of prior art normally moves, and motor is just changeing the configuration schematic diagram that the outer natural air of environment is sucked cooler condenser.
Fig. 3 is the electric appliance circuits figure of a kind of air-conditioner outdoor unit automatic dust removing apparatus that the utility model proposes.
Fig. 4 is the PLC wiring schematic diagram of a kind of air-conditioner outdoor unit automatic dust removing apparatus that the utility model proposes.
Among the figure, 1. motor; 2. fan blade; 3. condenser; 4. positive contactor; 5. counter-rotating contactor; 6. compressor contactor; 7.PLC cooling activation input; 8.PLC blower fan just transfers out; 9.PLC blower fan counter-rotating output.
The PLC input signal is among the figure, X0-X1 blower fan low speed, X2 cooling activation, low, the high voltage protective of X3-X4, X5-X10 overload protection, X11 phase sequence, 100,115 ℃ of temperature detect switch (TDS)s of X12-X13, X16 heated protective.
The PLC output signal is, the Y0-Y1 blower fan is low, at a high speed, and the Y12 blower fan just changes, Y13 electrical heating, the counter-rotating of Y15 blower fan.
(5) specific embodiment
Be configured in the inboard of condenser 3 by motor 1, fan blade 2, it is characterized in that, motor 1 is connected three phase mains by positive contactor 4 and counter-rotating contactor 5 two-way respectively, and refrigeration power switch connection PLC cooling activation imports 7,
PLC blower fan counter-rotating output 9 connects counter-rotating contactor 5, connects motor 1 then,
The PLC blower fan is just transferring out 8 and is connecting positive contactor 4, connects motor 1 then,
Increase fan blade 2 inclination angles, be designed to the novel blades 2 of 33 to 45 degree, the blast when having strengthened dust stratification on the reverse cleaning condenser 3.
The circuit design of this device, in electrical system, increase a counter-rotating contactor 5, the circuit that drives the three phase electric machine 1 of fan blade 2 is connected to three phase mains by counter-rotating contactor 5, and motor belongs to threephase asynchronous, and the method that makes its counter-rotating is exactly the order of transposing three-phase inlet wire.The inlet wire order of counter-rotating contactor 5 is opposite with positive contactor 4, so when counter-rotating contactor 5 was connected, motor just realization had reversed.
Timer sum counter by PLC inside is used in combination realization automation dedusting, and following two kinds of dedusting methods are arranged:
1. after connecting the power supply start, the input of PLC cooling activation is closed, and then counter-rotating output 9 is connected, and makes the 5 coil conductings of outdoor motor counter-rotating contactor, thereby makes outdoor motor counter-rotating dedusting.Continuous service is enough to the time of dust out, after 60 seconds, cuts off counter-rotating output 9, makes outdoor motor stop counter-rotating, and air-conditioning enters normal operating condition;
2. if this bridge crane air conditioning is continuous running status, then controller meeting self-clocking reaches official hour when running time, and example 8 hours is then cut off and just transferred out 8 outputs, moves the dedusting action simultaneously once.After finishing the dedusting action, get back to normal operating condition automatically.This process circulation is carried out, every interval official hour, and example was carried out once in 8 hours.Outdoor motor and compressor adopt same contactor control in the former electric control system, reverse simultaneously and damage compressor in order to prevent to change phase sequence rear motor and compressor, so compressor and motor are controlled by positive contactor 4 and compressor contactor 6 respectively, logic restricting relation according to each external contact and inner contact is write the relevant PLC program, realize defencive function: when counter-rotating contactor 5 closures, during outdoor motor counter-rotating dedusting, positive contactor 4 can't be closed, thereby prevent that outdoor motor from damaging; Outdoor motor stops just to change, and makes the compressor contactor 6 can't be closed, thereby prevents compressor reverse rotation.The introducing of defencive function has improved the electrical safety performance of bridge crane air conditioning, has reduced the accident odds, for safety in production provides guarantee.
The air-conditioner outdoor unit that Fig. 2 has shown prior art is when normal refrigerating operaton, and motor 1 is just changeing, and fan blade 2 sucks the state when condenser 3 is cooled off with the outer natural air of environment.
Claims (2)
1. air-conditioner outdoor unit automatic dust removing apparatus, be configured in the inboard of condenser (3) by motor (1), fan blade (2), it is characterized in that, motor (1) is connected three phase mains by positive contactor (4) with counter-rotating contactor (5) two-way respectively, the refrigeration power switch connects PLC cooling activation input (7)
PLC blower fan counter-rotating output (9) connects counter-rotating contactor (5), connects motor (1) then,
The PLC blower fan just transfers out (8) and connects positive contactor (4), connects motor (1) then,
Compressor contactor (6) connects compressor.
2. air-conditioner outdoor unit automatic dust removing apparatus according to claim 1 is characterized in that, the setting angle of fan blade (2) is that 35 degree are to 45 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420114810 CN2916469Y (en) | 2004-12-27 | 2004-12-27 | Automatic dust-collecting device of outdoor unit of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420114810 CN2916469Y (en) | 2004-12-27 | 2004-12-27 | Automatic dust-collecting device of outdoor unit of air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN2916469Y true CN2916469Y (en) | 2007-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420114810 Expired - Fee Related CN2916469Y (en) | 2004-12-27 | 2004-12-27 | Automatic dust-collecting device of outdoor unit of air conditioner |
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| CN (1) | CN2916469Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102201764A (en) * | 2010-03-24 | 2011-09-28 | 安森美半导体贸易公司 | Motor drive circuit and lighting device |
| CN102278803A (en) * | 2011-08-31 | 2011-12-14 | 广东美的电器股份有限公司 | Method for controlling dust removal device of heat exchanger of outdoor machine of air conditioner |
| CN102425977A (en) * | 2011-08-24 | 2012-04-25 | 海尔集团公司 | Dust removing method and device for microchannel cooler |
| CN102136816B (en) * | 2010-01-27 | 2013-05-29 | 建准电机工业股份有限公司 | Positive and negative rotation control circuit for fan |
| CN103521477A (en) * | 2013-10-12 | 2014-01-22 | 国家电网公司 | Method and device for automatically removing dust of protective screen of forced draft device |
| CN103521483A (en) * | 2013-10-12 | 2014-01-22 | 国家电网公司 | Automatic dust removing device for cooler for forced oil circulation power transformer and dust removing method thereof |
| CN105546751A (en) * | 2016-01-04 | 2016-05-04 | 广东美的暖通设备有限公司 | Air conditioner control method and air conditioner |
| CN111089437A (en) * | 2019-12-09 | 2020-05-01 | 浙江工业大学 | Pure electric bus air conditioning system with dust removal function |
| WO2020181878A1 (en) * | 2019-03-11 | 2020-09-17 | 珠海格力电器股份有限公司 | Dust removing method and apparatus for air-conditioner outdoor unit, and air-conditioner outdoor unit |
| CN112055801A (en) * | 2018-12-07 | 2020-12-08 | 青岛海尔电冰箱有限公司 | Refrigerator with a door |
-
2004
- 2004-12-27 CN CN 200420114810 patent/CN2916469Y/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136816B (en) * | 2010-01-27 | 2013-05-29 | 建准电机工业股份有限公司 | Positive and negative rotation control circuit for fan |
| CN102201764A (en) * | 2010-03-24 | 2011-09-28 | 安森美半导体贸易公司 | Motor drive circuit and lighting device |
| CN102425977A (en) * | 2011-08-24 | 2012-04-25 | 海尔集团公司 | Dust removing method and device for microchannel cooler |
| CN102278803A (en) * | 2011-08-31 | 2011-12-14 | 广东美的电器股份有限公司 | Method for controlling dust removal device of heat exchanger of outdoor machine of air conditioner |
| CN102278803B (en) * | 2011-08-31 | 2013-08-14 | 广东美的电器股份有限公司 | Method for controlling dust removal device of heat exchanger of outdoor machine of air conditioner |
| CN103521483A (en) * | 2013-10-12 | 2014-01-22 | 国家电网公司 | Automatic dust removing device for cooler for forced oil circulation power transformer and dust removing method thereof |
| CN103521477A (en) * | 2013-10-12 | 2014-01-22 | 国家电网公司 | Method and device for automatically removing dust of protective screen of forced draft device |
| CN103521483B (en) * | 2013-10-12 | 2017-01-04 | 国家电网公司 | Strong oil circulation power transformer cooler automatic dust removing method |
| CN105546751A (en) * | 2016-01-04 | 2016-05-04 | 广东美的暖通设备有限公司 | Air conditioner control method and air conditioner |
| CN105546751B (en) * | 2016-01-04 | 2018-04-10 | 广东美的暖通设备有限公司 | Air-conditioner control method and air conditioner |
| CN112055801A (en) * | 2018-12-07 | 2020-12-08 | 青岛海尔电冰箱有限公司 | Refrigerator with a door |
| WO2020181878A1 (en) * | 2019-03-11 | 2020-09-17 | 珠海格力电器股份有限公司 | Dust removing method and apparatus for air-conditioner outdoor unit, and air-conditioner outdoor unit |
| CN111089437A (en) * | 2019-12-09 | 2020-05-01 | 浙江工业大学 | Pure electric bus air conditioning system with dust removal function |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070627 Termination date: 20111227 |