CN101713571B - Air conditioner - Google Patents

Air conditioner Download PDF

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Publication number
CN101713571B
CN101713571B CN200910167064XA CN200910167064A CN101713571B CN 101713571 B CN101713571 B CN 101713571B CN 200910167064X A CN200910167064X A CN 200910167064XA CN 200910167064 A CN200910167064 A CN 200910167064A CN 101713571 B CN101713571 B CN 101713571B
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CN
China
Prior art keywords
mentioned
motor
electric current
current
air conditioner
Prior art date
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Active
Application number
CN200910167064XA
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Chinese (zh)
Other versions
CN101713571A (en
Inventor
上田贵郎
桥本浩之
寺内英树
远藤智史
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Johnson Controls Air Conditioning Inc
Original Assignee
Hitachi Appliances Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Publication of CN101713571A publication Critical patent/CN101713571A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/39—Monitoring filter performance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/52—Indication arrangements, e.g. displays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/88—Electrical aspects, e.g. circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/22—Cleaning ducts or apparatus

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Air Conditioning Control Device (AREA)
  • Control Of Stepping Motors (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)

Abstract

The present invention relates to an air conditioner. The object of the invention to be solved is that noise is large when a motor is drived and the air condition can not be controlled to stop when the conditioner is locked. The air conditioner is provided with an automatic cleaning mechanism used to drive a mechanism to clean a filter by a step-by-step motor, is characterized in that a current detection circuit is provided for detecting micro variation of current flowing in the step-by-step motor, the squalidity situation of the filter or the addition of micro load caused by locking the air conditioner is monitored according to the current variation, so as to control a number of revolution of the step-by-step motor. In the present invention, by reducing a driving sound caused by similar sine wave drive when the air conditioner is operating, monitoring the current of the motor and changing the torquemoment of the motor, such that the air conditioner is operating with a torquemoment of the motor nearby a driving critical value, it is possible to reduce the noise, and the safety is ensured by stopping the circumrotation of the motor when the air conditioner is locked.

Description

Air conditioner
Technical field
The present invention relates to carry the air conditioner of filter automatic sweeping machine structure, related in particular to by the variation of monitor flows through the Weak current of motor, controlled driving torque and the revolution of motor, thereby can realize the control mode that reduces of security and sound.
Background technology
Air conditioner circulates room air in heat exchanger, utilize heating, cooling, dehumidification function etc. that it is adjusted, and with it to indoor blowing out and carry out air conditioning to indoor.At this moment, if the air cleaning filter of air conditioner is dirty, then cycle efficieny descends, and not only heats, performances such as cooling, dehumidification function reduce, but also causes the increase of power consumption.In addition, because cleaning agency carries out work automatically, therefore need to consider security and low noiseization.
Prior art is referring to patent documentation 1: TOHKEMY 2008-057864 communique.
With regard to existing automatic cleaning function portion, because the stepper motor of the one pole type by there not be the electric current change that load causes drives, therefore can not change because load make motor torque.
For this reason, suppose and under all situations, carry out work, and with the motor torque CD-ROM drive motor with sufficient surplus.Therefore, with regard to common environmental performance, owing to motor produces big driving noise with the torque actuated more than the required motor torque.And, in portion of mechanism, sandwiched the occasion of article etc., it is stopped, there is defective aspect the securities such as article are damaged.
Summary of the invention
Noise when problem to be solved by this invention is CD-ROM drive motor and the control that when the locking of machinery, it is stopped.
So the present invention can detect electric current, the revolution that can change motor and motor torque or it is stopped, thereby guarantee low noiseization and security by using ambipolar stepper motor.
So, driving sound when the present invention drives the change of current that causes by reducing sinusoidal wave, monitor the electric current of motor, can change motor torque, thereby near the motor torque work with the driving critical value can realize the reduction of noise, and, by the rotation of motor being stopped when the locking of machinery, thereby guarantee security.
Invention according to scheme one record, by with cheap, long service life but the stepper motor of current detecting difficulty carries out current detecting control, thereby can realize the reduction of cost and the prolongation in service life, control can be changed by dirty situation and mechanical locking according to filter, thereby the raising of security can be realized.
According to the invention of scheme two records, by in cheap stepper motor, adopting the big ambipolar motor of variation that makes electric current according to load, can improve the security of control.
According to the invention of scheme three records, drive by carrying out sinusoidal wave, the electromagnetic sound of the moment generation of the change of current can be reduced in, thereby the noise when driving can be reduced.
Invention according to scheme four records, monitor the dirty situation of filter according to the increase and decrease of small load, be judged as the heavy occasion of load, by flow through the magnitude of current in the motor of increase, can improve motor torque, therefore, under dirty few situation of common filter, with the low torque CD-ROM drive motor, the noise in the time of can reducing to drive.
Description of drawings
Fig. 1 represents the outward appearance configuration example of the air conditioner of embodiments of the invention.
Fig. 2 represents the inside configuration example of the air conditioner of embodiments of the invention.
Fig. 3 represents the configuration example of the automatic cleaning function portion of embodiments of the invention.
Fig. 4 represents the configuration example of the current detecting control part of embodiments of the invention.
Fig. 5 represents the current waveform of the 1-2 phase excitation mode of embodiments of the invention.
Fig. 6 represents the current waveform of the sinusoidal wave mode of embodiments of the invention.
Fig. 7 represents the control flow chart of the automatic sweeping machine structure of embodiments of the invention.
Among the figure:
The 1-air conditioner, 2-indoor set, 3-off-premises station, the automatic cleaning function motor of 4-, 5-pipe arrangement, 6-filter, the 7-front panel, 8-escutcheon, 9-air conditioner shell, the 10-light accepting part, 11-LED display part, 12-remote controller, 13-up-down wind direction board, 14-axial-flow fan, 15-clean automatically with brush, the 16-heat exchanger, 17-condensate water pallet, 18-display unit, 19-left and right sides wind direction board, 20-electric components, the automatic cleaning function of 21-portion, the 22-movable axis, 24-microcomputer, 25-current detection circuit, 26-resistance, 27-comparator, 28-cabinet, the 29-air outlet, the 30-air suction inlet.
The specific embodiment
Air conditioner 1 shown in Figure 1 is made of indoor set 2 and off-premises station 3.Indoor set 2 and indoor set 3 are connected by power supply and the cable of communication usefulness and the pipe arrangement 5 of refrigerant conveying.Indoor set 2 constitutes its outward appearance by cabinet 28, constitutes air suction inlet 30 and air outlet 29 at cabinet 28.In addition, in cabinet 28, dispose heat exchanger 16, the filter 6 that forms with metal sputtering, from the axial-flow fan 14 of air blow-off outlet 29 blow out air and the ventilation fan that the air of indoor and outdoors is taken a breath.Also have, filter 6 is configured between air suction inlet 30 and the heat exchanger 16, and cleaning arranges with the mode of brush 15 with the surface of tracking filter 6 automatically, has only expressed its approximate location among Fig. 1.
Secondly, as structure of the present invention, represent the pie graph of automatic cleaning function portion with Fig. 2, represent the pie graph of motor current testing circuit with Fig. 3.
Shown in Figure 2 automatic cleaning function portion 21 is set in indoor set 2.Automatically cleaning function portion 21 by filter 6, automatically cleaning function with ambipolar stepper motor 4 and automatically cleaning constitute with brushing 15 etc.The automatic cleaning that is connected with ambipolar stepper motor 4 with movable axis 22 and automatic cleaning function is made to be rotated with motor 4 by automatic cleaning function turbine is rotated with brushing 15, thereby makes automatic cleaning with brushing 15 structures that move.
The type of drive of motor is not merely to repeat the stepper motor type of drive that is commonly referred to the 1-2 phase excitation mode of as shown in Figure 5 ON, OFF, but by adjusting ON as shown in Figure 6, the amplitude of OFF, adjust the current value formation close to the current waveform of sinusoidal wave, thereby reduce the change of current time, realize the reduction of noise.
Make motor current be provided in electric components 20 inside with the circuit of the control of sinusoidal wave driving work as mentioned above, make shown in Figure 4 passing through and detect the automatic cleaning function of flowing through with the electric current of ambipolar stepper motor 4 with the current detection circuit 25 that possesses microcomputer 24 and resistance 26 and comparator 27, thereby can hold the structure of the detailed situation of motor.
In this structure, driven automatic cleaning function with the occasion of ambipolar stepper motor 4, the automatic cleaning function of flowing through with the current circuit of ambipolar stepper motor 4 in the configuration resistance 26, by making the magnitude of current in this resistance 26 of flowing through return comparator 27, and detect with the A/D interface of microcomputer 24, thereby identify automatic cleaning function with the state of ambipolar stepper motor 4.
Automatically under the situation that cleaning function stops with ambipolar stepper motor 4, the automatic cleaning function of flowing through is 0A with the current value in the ambipolar stepper motor 4.Under the situation that begins to move according to the instruction from microcomputer 24, dust can not accumulate on the filter 6, under the situation that load not have to change, flows through constant electric current.
But, have the situation that does not flow through constant current.
The above-mentioned situation that does not flow through constant current is that a lot of dust accumulate on the filter 6, bigger occasion or the mechanically occasion of locking takes place when duty ratio is common.
Shown in the control flow chart of Fig. 7, at first, make the motor starting in order to make the action of automatic sweeping machine structure.Carry out the supervision of electric current in the time of with the starting of motor, the magnitude of current during the common work always carrying out having with microcomputer inside relatively and carry out work.
So, under being judged as the big situation of the magnitude of current of duty ratio when working usually, increase the magnitude of current of motor, thereby increase motor torque, the driving of beginning motor.At this moment, motor need not temporarily to stop, but motor torque is changed.
Continue to monitor the electric current of the state that has increased motor torque, carry out the magnitude of current that takes place when the locking of machinery that has with microcomputer inside relatively and carry out work.
So, then stop electric current during the locking of machinery and flow.But, consider by stopping to remove the possibility of mechanical locking, begin the driving of motor again.However, the occasion in the locking that is judged to be machinery stops motor, shows that there is certain problem in the automatic sweeping machine structure.
Do not having under the situation of aforesaid problem, the automatic cleaning works of normal termination stops the driving of motor.

Claims (2)

1. air conditioner is characterized in that possessing:
Cabinet with air suction inlet and air outlet;
Be disposed at the filter in the above-mentioned cabinet;
The automatic cleaning brush that carries out the cleaning of above-mentioned filter in above-mentioned filter movement;
Make the above-mentioned automatic cleaning stepper motor that swipes work; And
The flow through current detection circuit of variation of electric current of above-mentioned stepper motor of detection,
Be under the situation of the electric current of the electric current of duty ratio when working usually when big by the detected electric current of above-mentioned current detection circuit, increase the electric current of the above-mentioned stepper motor of flowing through,
Under the state of the electric current that has increased the above-mentioned stepper motor of flowing through, be under the situation of the electric current that takes place when the locking of machinery that has of the inside of above-mentioned current detection circuit by the detected electric current of above-mentioned current detection circuit, stop the driving of above-mentioned stepper motor.
2. air conditioner according to claim 1 is characterized in that,
Judge by the detected electric current of above-mentioned current detection circuit be the inside of above-mentioned current detection circuit have in mechanical caging the time electric current that takes place situation under, stop the driving of above-mentioned stepper motor after, begin the driving of above-mentioned stepper motor again,
If judge that by the detected electric current of above-mentioned current detection circuit be under the situation of the electric current that takes place when the mechanical caging that has of the inside of above-mentioned current detection circuit for twice continuously, stop above-mentioned stepper motor and show the unusual of above-mentioned automatic sweeping machine structure.
CN200910167064XA 2008-10-07 2009-08-19 Air conditioner Active CN101713571B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008-260222 2008-10-07
JP2008260222A JP5193791B2 (en) 2008-10-07 2008-10-07 Air conditioner

Publications (2)

Publication Number Publication Date
CN101713571A CN101713571A (en) 2010-05-26
CN101713571B true CN101713571B (en) 2013-07-10

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Application Number Title Priority Date Filing Date
CN200910167064XA Active CN101713571B (en) 2008-10-07 2009-08-19 Air conditioner

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JP (1) JP5193791B2 (en)
KR (1) KR101137647B1 (en)
CN (1) CN101713571B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9662605B2 (en) 2013-04-18 2017-05-30 Narendra Nilkanth Pawar Filter detection based air purification system

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5517877B2 (en) * 2010-10-15 2014-06-11 日立アプライアンス株式会社 Air conditioner
KR101159033B1 (en) * 2011-12-30 2012-06-21 서울특별시도시철도공사 Auto stop device when auto filter is fault
CN109489238B (en) * 2018-11-14 2020-10-30 滨州学院 Multifunctional indoor environment monitoring device and monitoring method thereof
CN114234411B (en) * 2021-12-21 2022-12-02 珠海格力电器股份有限公司 Torque calculation method of compressor and air conditioner with same

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KR960001661A (en) * 1994-06-27 1996-01-25 김광호 Operation controller and method of air conditioner
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9662605B2 (en) 2013-04-18 2017-05-30 Narendra Nilkanth Pawar Filter detection based air purification system

Also Published As

Publication number Publication date
JP5193791B2 (en) 2013-05-08
KR20100039215A (en) 2010-04-15
CN101713571A (en) 2010-05-26
KR101137647B1 (en) 2012-04-19
JP2010091160A (en) 2010-04-22

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Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20160819

Address after: Hongkong, China

Patentee after: Johnson Controls Hitachi air conditioning technology (Hongkong) Co., Ltd.

Address before: Tokyo, Japan, Japan

Patentee before: Hitachi Appliances Inc.

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20180613

Address after: Tokyo, Japan, Japan

Patentee after: Hitachi Johnson Controls Air Conditioning Co., Ltd.

Address before: Hongkong, China

Patentee before: Johnson Controls Hitachi air conditioning technology (Hongkong) Co., Ltd.