CN1292077A - Indoor-outdoor communication device in air-conditioner - Google Patents
Indoor-outdoor communication device in air-conditioner Download PDFInfo
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- CN1292077A CN1292077A CN99803408A CN99803408A CN1292077A CN 1292077 A CN1292077 A CN 1292077A CN 99803408 A CN99803408 A CN 99803408A CN 99803408 A CN99803408 A CN 99803408A CN 1292077 A CN1292077 A CN 1292077A
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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
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
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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
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
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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
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/32—Details or features not otherwise provided for preventing human errors during the installation, use or maintenance, e.g. goofy proof
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- Mathematical Physics (AREA)
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- Air Conditioning Control Device (AREA)
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- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
The present invention relates to a indoor-outdoor communication device for an air conditioner comprising one outdoor unit(1)and a plurality of indoor units(2)connected to the outdoor unit via three connection lines(3)including commercial power supply lines(3a, 3b)in parallel with each other, wherein the outdoor unit(1)includes an outdoor microcomputer(14), an outdoor dc power supply(11), an outdoor transmission photocoupler(15), an outdoor reception photocoupler(16)and a termination resistor(17)connected in parallel with the photocoupler(16), and each indoor unit(2)includes an indoor dc power supply(21), an indoor microcomputer(22), an indoor reception photocoupler(24), an indoor transmission photocoupler(23)and a positive temperature coefficient thermistor(25)connected in series with the photocoupler(23).
Description
Invention field
The present invention relates to the indoor-outdoor communication device in the air-conditioner.Particularly, the present invention relates to comprise outdoor unit and in three connection lines are connected to the air-conditioner of indoor unit of outdoor unit indoor-outdoor communication device, three connection lines comprise commercial supply line.
Background technology
Proposed to comprise outdoor unit in the past and be connected to the air-conditioner of the indoor unit of outdoor unit through three indoor-outdoor connection lines, three connection lines comprise commercial supply line.
In this air-conditioner, the wiring of the installation of indoor and outdoor unit and three indoor-outdoor connecting lines should be finished in actual place, therefore may the wrong line.When the wrong line, the signal transmission between outdoor unit and the indoor unit can not normally be carried out, and can damage circuit unit once in a while.Therefore before the normal operation of air-conditioner, must detect the situation of wrong line.
In order to satisfy these requirements, proposed to close the layout of voltage switch device (referring to the open communique No.6-147616 of Japan Patent) and stop to send in the past-layout (referring to the open communique No.8-271022 of Japan Patent) of the operation of the transmit button part of receiving circuit part by providing abnormal voltage to detect the protection part when indoor-outdoor communication utilizes timer arrangement when being unrealized in Preset Time.
When adopting these layouts, the shortcoming of air-conditioner operation when having avoided the wrong line.
During the layout that in adopting the 6-147616 communique, discloses, need the voltage switch device.The voltage switch device should have enough withstand voltage for commercial supply voltage, and therefore the voltage switch device is difficult to reduce the cost of telecommunication circuit part with indoor-outdoor traffic operation is irrelevant normally.Certainly, the voltage switch device is installed needs installing space, therefore is difficult to reduce the installing space of telecommunication circuit part.
When adopting the layout of 8-271022 communique announcement, need abnormal voltage to detect the protection part.Abnormal voltage detects the protection part and should have enough withstand voltagely for commercial supply voltage, and abnormal voltage detects the protection part and indoor normally-outdoor traffic operation is irrelevant, therefore is difficult to reduce the cost of telecommunication circuit part.Certainly, abnormal voltage detection protection part is installed needs installing space, therefore is difficult to reduce the installing space of telecommunication circuit part.
And in the multiple-series type air-conditioner that comprises an outdoor unit and a plurality of indoor units that link to each other with outdoor unit through three connection lines, such shortcoming being arranged also, connection line comprises the commercial supply line of mutual parallel connection.
At the problems referred to above the present invention is proposed.
Target of the present invention provides the indoor-outdoor communication device in a kind of air-conditioner; this device need not the circuit layout irrelevant with normal indoor-outdoor traffic operation (for example power switch device, abnormal voltage detect the protection part), has avoided the damage and the sudden turn of events of transmitter/receiver circuit unit when the wrong line.
Summary of the invention
Indoor-outdoor communication device in the air-conditioner of claim 1 comprises outdoor unit and is connected to the indoor unit of outdoor unit through three connection lines that three-line comprises commercial supply line,
One of them of outdoor unit and indoor unit comprise first control device, send to first electric supply installation of first control device power supply, between first control device and first the sending photo-coupler and first and receive photo-coupler of received signal, photo-coupler is connected between the commercial ac power source terminal mutually through DC power supply apparatus, and receive photo-coupler first resistance device in parallel with first, and
Another of outdoor unit and indoor unit comprise second control device, send between second control device and second the sending photo-coupler and second and receive photo-coupler of received signal, it is in parallel that photo-coupler in three connection lines two and first receives photo-coupler, and second resistance device that is used to suppress the overcurrent that causes because of the wrong line, resistance device and second sends photo-coupler and connects.
Indoor-outdoor communication device comprises three indoor units that connection line is connected with outdoor unit of an outdoor unit and a plurality of commercial supply lines through comprising mutual parallel connection in the air-conditioner of claim 2,
Outdoor unit comprises outdoor control device, send to the outdoor control electric supply installation of outdoor control device power supply, between outdoor control device and the outdoor transmission photo-coupler and the outdoor reception photo-coupler of received signal, photo-coupler is connected between the commercial ac power source terminal mutually through DC power supply apparatus, and first resistance device in parallel with outdoor reception photo-coupler, and
Each indoor unit comprise through commercial supply line be connected indoor control electric supply installation between the commercial ac power source terminal, by the Indoor Control Device of indoor control electric supply installation power supply, between Indoor Control Device, send and the indoor reception photo-coupler and the indoor transmission photo-coupler of received signal, photo-coupler two in three connection lines are in parallel with outdoor reception photo-coupler, and second resistance device that is used to suppress the overcurrent that causes because of the wrong line, resistance device is connected with indoor transmission photo-coupler.
Indoor-outdoor communication device adopts the thermistor of positive temperature characterisitic as second resistance device in the air-conditioner of claim 3.
Indoor-outdoor communication device in the air-conditioner of claim 4 comprises outdoor unit and is connected to the indoor unit of outdoor unit through three connection lines that three-line comprises commercial supply line,
One of them of outdoor unit and indoor unit comprise outdoor control device, send to the outdoor control electric supply installation of outdoor control device power supply, between outdoor control device and the outdoor photo-coupler and the outdoor reception photo-coupler of sending of received signal, photo-coupler is connected between the commercial ac power source terminal mutually through DC power supply apparatus, and first resistance device in parallel with outdoor reception photo-coupler, and
Another of outdoor unit and indoor unit comprises the transformer that is connected with the commercial ac power source terminal through commercial supply line, to be transformed to the fairing of DC voltage from the output voltage of transformer, abnormal voltage checkout gear according to the operation of the DC voltage of conversion, be connected second electric supply installation between the fairing output, be provided the Indoor Control Device of conversion DC voltage, the indoor transmission photo-coupler and the indoor reception photo-coupler of transmission and received signal between Indoor Control Device, photo-coupler two in three connection lines are in parallel with outdoor reception photo-coupler, and second resistance device of connecting with indoor transmission photo-coupler.
Indoor-outdoor communication device comprises three indoor units that connection line is connected with outdoor unit of an outdoor unit and a plurality of commercial supply lines through comprising mutual parallel connection in the air-conditioner of claim 5,
Outdoor unit comprises outdoor control device, outdoor control electric supply installation, send between outdoor control device and the outdoor transmission photo-coupler and the outdoor reception photo-coupler of received signal, photo-coupler is connected between the commercial ac power source terminal mutually through DC power supply apparatus, and first resistance device in parallel with outdoor reception photo-coupler, and
Each indoor unit comprises the transformer that is connected with the commercial ac power source terminal through commercial supply line, to be transformed to the fairing of DC voltage from the output voltage of transformer, abnormal voltage checkout gear according to the operation of the DC voltage of conversion, be connected the indoor control electric supply installation between the fairing output, be provided the Indoor Control Device of conversion DC voltage, the indoor transmission photo-coupler and the indoor reception photo-coupler of transmission and received signal between Indoor Control Device, photo-coupler two in three connection lines are in parallel with outdoor reception photo-coupler, and second resistance device of connecting with indoor transmission photo-coupler.
When in the air-conditioner that adopts claim 1 during indoor-outdoor communication device, and when air-conditioner sending between outdoor unit and the indoor unit and received signal under when operating (by comprising that through three commercial supply line is connected outdoor unit and indoor unit), provide alternating current through commercial supply line commercial ac power source in outdoor unit and indoor unit, and provide alternating current to another.Signal of communication from first control device receives the photo-coupler reception through the first transmission photo-coupler by second, and second received signal that receives photo-coupler is provided for second control device, thereby controls in outdoor unit and the indoor unit another.And, sending photo-coupler from the signal of communication of second control device through second and receive photo-coupler by first and receive, first received signal that receives photo-coupler is provided for first control device, thereby monitors in outdoor unit and the indoor unit another.
And, utilize three connection lines to operate after being connected when between outdoor unit and indoor unit, doing signal transmission and reception when placing outdoor unit and indoor unit and each control device at outdoor unit and indoor unit, under the normal condition that connects of three connection lines, finish normal signal and send and receive, send and receive and under the normal condition of three connection line malunions, can't finish normal signal.Therefore, can judge whether three connection lines normally connect.
Therefore, send the operating condition of photo-coupler and utilize second resistance device restriction electric current that suppresses the overcurrent that the wrong line causes, avoided the transmission that the wrong line causes and the damage or the sudden turn of events of receiving circuit element by judging second by force.By determining that communication power supply is that dc source has improved communication speed.Owing to the component that need not such as power switch device, abnormal voltage detect the protection part, to have nothing to do at all, so avoided the increase of cost and installing space with normally indoor-outdoor traffic operation.
When in the air-conditioner that adopts claim 2 during indoor-outdoor communication device, and when air-conditioner sending between outdoor unit and the indoor unit and received signal under when operating (by comprising commercial supply line outdoor unit and the indoor unit of being connected parallel with one another) through three, provide to the indoor control electric supply installation of outdoor unit and each from commercial AC power through commercial supply line to exchange.Signal of communication from outdoor control device is received by indoor reception photo-coupler through outdoor transmission photo-coupler, thereby the received signal of indoor reception photo-coupler is provided for Indoor Control Device control indoor unit.And, receive by outdoor reception photo-coupler through indoor transmission photo-coupler from the signal of communication of Indoor Control Device, thereby being provided for outdoor control device, the received signal of outdoor reception photo-coupler monitors indoor unit.
And, utilize three connection lines to operate after being connected when between outdoor unit and indoor unit, doing signal transmission and reception when placing outdoor unit and a plurality of indoor unit and each control device at outdoor unit and indoor unit, under the normal condition that connects of three connection lines, finish normal signal and send and receive, send and receive and under the normal condition of three connection line malunions, can't finish normal signal.Therefore, can judge whether three connection lines normally connect.
Therefore, send the operating condition of photo-coupler and utilize second resistance device restriction electric current that suppresses the overcurrent that the wrong line causes, avoided the transmission that the wrong line causes and the damage or the sudden turn of events of receiving circuit element by judging second by force.By determining that communication power supply is that dc source has improved communication speed.Owing to the component that need not such as power switch device, abnormal voltage detect the protection part, to have nothing to do at all, so avoided the increase of cost and installing space with normally indoor-outdoor traffic operation.
When in the air-conditioner that adopts claim 3 during indoor-outdoor communication device, because device adopts the thermistor of positive temperature characterisitic as second resistance device, so electric current depression effect and realization operation and the effect similar when having improved the wrong line to claim 1 or 2.
When in the air-conditioner that adopts claim 4 during indoor-outdoor communication device, and when air-conditioner sending between outdoor unit and the indoor unit and received signal under during operation (another and the indoor unit that are connected one of outdoor unit and indoor unit and outdoor unit by the connecting line that comprises commercial supply line through three), through commercial supply line and transformer from commercial AC power to outdoor unit and indoor unit and another confession alternating current.From the signal of communication of first control device through first send photo-coupler by outdoor unit in another second receive photo-coupler and receive, second received signal that receives photo-coupler is provided for second control device, thereby controls in outdoor unit and the indoor unit another.And, signal of communication from second control device sends the photo-coupler chamber through second, the first reception photo-coupler by one in the outdoor unit receives, and first received signal that receives photo-coupler is provided for first control device, thereby monitors in outdoor unit and the indoor unit another.
And, utilize three connection lines to operate after being connected when between outdoor unit and indoor unit, doing signal transmission and reception when placing outdoor unit and indoor unit and each control device at outdoor unit and indoor unit, under the normal condition that connects of three connection lines, finish normal signal and send and receive, send and receive and under the normal condition of three connection line malunions, can't finish normal signal.Therefore, judge whether three-line normally connects.And, when the wrong line, owing to the current loop that has produced through first resistance device, so do not produce normal voltage at the transformer outlet side.Therefore, by utilizing the abnormal voltage checkout gear to detect the kind that above-mentioned condition can be discerned the wrong line.
Therefore, send the operating condition of photo-coupler and utilize second resistance device restriction electric current that suppresses the overcurrent that the wrong line causes, avoided the transmission that the wrong line causes and the damage or the sudden turn of events of receiving circuit element by judging second by force.By determining that communication is that dc source has improved communication speed.Owing to the component that need not such as power switch device, abnormal voltage detect the protection part, to have nothing to do at all, so avoided the increase of cost and installing space with normally indoor-outdoor traffic operation.
When in the air-conditioner that adopts claim 5 during indoor-outdoor communication device, and when air-conditioner sending between outdoor unit and the indoor unit and received signal under during operation (by interrelated outdoor unit and the indoor unit of being connected of connecting line that comprises commercial supply line through three), through commercial supply line from the indoor control electric supply installation confession alternating current of commercial AC power to outdoor unit and each indoor unit.Signal of communication from outdoor control device is received by indoor reception photo-coupler through outdoor transmission photo-coupler, thereby the received signal of indoor reception photo-coupler is provided for Indoor Control Device control indoor unit.And, receive by outdoor reception photo-coupler through indoor transmission photo-coupler from the signal of communication of Indoor Control Device, thereby being provided for outdoor control device, the received signal of outdoor reception photo-coupler monitors indoor unit.
And, utilize three connection lines to operate after being connected when between outdoor unit and indoor unit, doing signal transmission and reception when placing outdoor unit and a plurality of indoor unit and each control device at outdoor unit and indoor unit, under the normal condition that connects of three connection lines, finish normal signal and send and receive, send and receive and under the normal condition of three connection line malunions, can't finish normal signal.Therefore, can judge whether three-line normally connects.
Therefore, send the operating condition of photo-coupler and utilize second resistance device restriction electric current that suppresses the overcurrent that the wrong line causes, avoided the transmission that the wrong line causes and the damage or the sudden turn of events of receiving circuit element by judging second by force.By determining that communication is that dc source has improved communication speed.Owing to the component that need not such as power switch device, abnormal voltage detect the protection part, to have nothing to do at all, so avoided the increase of cost and installing space with normally indoor-outdoor traffic operation.
Brief description of drawings
Fig. 1 is the electrical schematic of the interior indoor-outdoor communication device of air-conditioner of embodiment;
Fig. 2 is a flow chart of understanding indoor unit wrong line decision operation;
Fig. 3 is a flow chart of understanding outdoor unit wrong line decision operation;
Fig. 4 (A)-4 (F) is for understanding the signal waveforms of wrong line judgement sequential when electric power starting;
Fig. 5 (A)-5 (F) is for understanding the oscillogram of communication from the outdoor unit to the indoor unit when the wrong line not;
Fig. 6 (A)-6 (F) is for understanding the oscillogram of communicating by letter with indoor unit 2 from indoor unit 1 to outdoor unit when the wrong line not;
Fig. 7 (A)-7 (F) is for understanding the oscillogram of communication data and signal of communication line loop operation between outdoor unit and the indoor unit;
Fig. 8 (A)-8 (E) is for understanding the schematic diagram of wrong ray mode when having outdoor unit and an indoor unit;
Fig. 9 (A)-9 (E) is for understanding the schematic diagram of wrong ray mode when having outdoor unit and two indoor units;
Figure 10 is the schematic diagram of commercial 3a of supply line and signal line 3c misconnection state;
Figure 11 is the schematic diagram of commercial 3b of supply line and signal line 3c misconnection state;
Figure 12 is the schematic diagram of commercial 3a of supply line and 3b misconnection state;
Figure 13 is the schematic diagram of the commercial 3a of supply line and signal line 3c misconnection, signal line 3c and the commercial 3b of supply line misconnection and commercial 3b of supply line and the commercial 3a of supply line misconnection state;
Figure 14 is the schematic diagram of the commercial 3a of supply line and the commercial 3b of supply line misconnection, signal line 3c and the commercial 3a of supply line misconnection and commercial 3b of supply line and signal line 3c misconnection state;
Figure 15 is the electrical schematic of the interior indoor-outdoor communication device of air-conditioner of another embodiment; And
Figure 16 is a flow chart of understanding indoor unit wrong line decision operation.
The preferred mode that carries out an invention
Below describe in detail according to indoor-outdoor communication device in the air-conditioner of the embodiment of the invention by accompanying drawing.
Fig. 1 is the electrical schematic according to indoor-outdoor communication device in the air-conditioner of the embodiment of the invention.
Air-conditioner comprises an outdoor unit 1 and a plurality of indoor unit 2.A plurality of indoor units 2 link to each other with outdoor unit 1 through three connection lines 3 parallel with one another.
And the light receiving unit 15b of outdoor transmission photo-coupler 15, the first diode 18a, the 3rd resistance 18b (its resistance be enough to when the wrong line, to limit outdoor transmission photo-coupler 15 light receiving unit 15b electric current and utilize the light receiving unit 15b of outdoor transmission photo-coupler 15 to finish communication), the second diode 18c, the 4th resistance 18d (thereby its resistance restriction electric current prevents the Optical Transmit Unit 16a damage of outdoor reception photo-coupler 16 and utilizes the light receiving unit 16a of outdoor reception photo-coupler 16 to finish communication when the wrong line), the Optical Transmit Unit 16a of outdoor reception photo-coupler 16 and the series connection of Zener diode, this series circuit is in parallel with the rectification circuit part of halfwave rectifier DC power supply circuit 12.The collector terminal of transistor 15c is connected with the Optical Transmit Unit 15a of outdoor transmission photo-coupler 15.The emitter terminal ground connection of transistor 15c.Resistance 15d is connected between the base terminal and emitter terminal of transistor 15c.Resistance 15e is connected between the transmit port of the base terminal of transistor 15c and outdoor microcomputer 14.And label 15f represents to be connected the resistance between the Optical Transmit Unit 15a of the output of output control dc source 11 and outdoor transmission photo-coupler 15.The transmitting terminal of the light receiving unit 16a of outdoor reception photo-coupler 16 is through resistance 16c ground connection, and the tie point of the transmitting terminal of light receiving unit 16b and resistance 16c links to each other with the receiving port of outdoor microcomputer 14.
And, can adopt digital transistor to replace the circuit of forming by transistor 15c and resistance 15d and 15e, and can determine the polarity of suitable output signal.
Article three, indoor-outdoor connection line 3 is made up of a pair of commercial power line 3a and 3b and a signal of communication circuit 3c.This links to each other with commercial ac power source 10 two ends with 3b to source power supply circuit 3a, and signal of communication circuit 3c links to each other with the tie point of the second diode 18c with the 3rd resistance 18b.
Indoor unit 2 comprises as indoor control electric supply installation and is connected control dc source 21 between a pair of source power supply circuit 3a and the 3b; indoor microcomputer 22 as Indoor Control Device; the indoor emission photo-coupler 23 that links to each other with the emission port of indoor microcomputer 22; the indoor reception photo-coupler 24 that links to each other with the receiving port of indoor microcomputer 22 and as the positive temperature characteristic thermistor 25 that is used to protect overcurrent of second resistance; it has positive temperature coefficient, and thermistor 25 is connected with the collector terminal of the phototransistor 23b of indoor emission photo-coupler 23.
The Optical Transmit Unit 24a and the Zener diode 26c series connection of the 3rd diode 26a, the 5th resistance 26b (thereby its resistance restriction electric current prevents the Optical Transmit Unit 24a damage of indoor reception photo-coupler 24 and utilizes the Optical Transmit Unit 24a of indoor reception photo-coupler 24 to finish communication when the wrong line), indoor reception photo-coupler 24, and this series circuit is in parallel with terminating resistor 17 through commercial 3b of supply line and signal of communication circuit 3c.
And the series circuit of being made up of the light receiving unit 23b of positive temperature characteristic thermistor 25 and indoor emission photo-coupler 23 is in parallel with the series circuit that Optical Transmit Unit 24a and the Zener diode 26c by the 5th resistance 26b, indoor reception photo-coupler 24 forms.And, the cathode terminal of the Optical Transmit Unit 23a of indoor transmission photo-coupler 23 is through resistance 23c ground connection, the anode tap of Optical Transmit Unit 23a links to each other with the collector terminal of transistor 23d, resistance 23e is connected between the emitter terminal and base terminal of transistor 23d, and the base terminal of transistor 23d links to each other with the transmit port of indoor microcomputer 22 through resistance 23f.Label 23g representative is connected to the pull-up resistor of the transmit port of indoor microcomputer 22.The emitter terminal of the light receiving unit 24b of indoor reception photo-coupler 24 is through resistance 24c ground connection, and the emitter terminal of light receiving unit 24b links to each other with the receiving port of indoor microcomputer 22 with the tie point of resistance 24c.
Can adopt digital transistor to replace the circuit of forming by transistor 23c and resistance 23d and 23e, and can determine the polarity of suitable output signal.And positive temperature characteristic thermistor 25 has function and the operation of just often protecting the light receiving unit 23b current switching of indoor transmission photo-coupler 23 in communication.
Fig. 2 is the flow chart that is used to understand indoor unit wrong line decision operation.
In step SP1, the transmit port of microcomputer 22 in the opening chamber (sending the light receiving unit 23b of photo-coupler 23 in the close chamber).In step SP2, judge whether to exist the source power supply frequency to interrupt.When judgement exists the source power supply frequency to interrupt, find that at step SP3 the connection of indoor-outdoor connection line 3 is unusual.In step SP4, the transmit port of microcomputer 22 in the close chamber (sending the light receiving unit 23b of photo-coupler 23 in the opening chamber).Complete operation series subsequently.
On the contrary, when judgement in step SP2 does not exist the source power supply frequency to interrupt, find that at step SP5 the connection of indoor-outdoor connection line 3 is normal.At step SP6, according to the normal sequence executable operations.
Fig. 3 is the flow chart that is used to understand outdoor unit wrong line decision operation.
In step SP1, the transmit port of microcomputer 14 outside the close chamber (sending the light receiving unit 15b of photo-coupler 15 outside the close chamber).In step SP2, judge whether to exist the reception data to interrupt.When judging that existence receives the data interruption, find that at step SP8 the connection of indoor-outdoor connection line 3 is unusual.Operation among the execution in step SP1 once more subsequently.On the contrary, when there is not the interruption of reception data in judgement in step SP2, carries out wait at step SP3 and operate, up to the wrong line judgement time interval of process indoor unit 2.At step SP4, the transmit port of microcomputer 14 outside the opening chamber (sending the light receiving unit 15b of photo-coupler 15 outside the opening chamber).In step SP5, judge whether send output equates with the reception input.When judging that transmission output and reception input are unequal, the operation among the execution in step SP8.On the contrary, when judging that at step SP5 transmission output equates with the reception input, find that in step SP6 indoor-outdoor connection line 3 connections are normal.In step SP7, carry out operation based on normal sequence.
Fig. 4 (A)-4 (F) is for understanding the signal waveforms of wrong line judgement sequential when electric power starting.
When carrying out reset operation when power-on shown in Fig. 4 (A) and shown in Fig. 4 (B), shown in Fig. 4 (C) and 4 (D), outdoor transmission output and outdoor reception input transfer low level to, and shown in Fig. 4 (E) and 4 (F), indoor transmission output transfers high level to and indoor reception input transfers low level to.
And, { interrupt judgement time in Fig. 4 (C) at interval } in the very first time interval after reset operation, carry out the judgement that receives the data interruption in the flow chart step SP2 shown in Figure 3.In second time interval { the indoor unit judgement time among Fig. 4 (C) is waited at interval } subsequently, carry out the wait operation in the flow chart step SP3 shown in Figure 3.In the 3rd time interval { the consistent judgement time of the input-output among Fig. 4 (C) interval } subsequently, carry out the consistent decision operation of input-output in the flow chart step SP5 shown in Figure 3, thereby whether the connection of judging indoor-outdoor connection line 3 is normal.
And, { longer at interval but shorter in the 4th time interval after reset operation than first and second time interval sums than the very first time; Source power supply frequency among Fig. 4 (F) is interrupted judgement time at interval }, carry out the source power supply frequency and interrupt decision operation.
Below be described in detail.
After power-on, close the light receiving unit 15b that the management outdoor unit sends the outdoor transmission photo-coupler 15 of signal generation.Although when outdoor unit receiving circuit received pulse signal, do not carry out the power supply of outdoor unit communication; but still judge outdoor unit wrong line and make the light receiving unit 15b of outdoor transmission photo-coupler 15 be in closed condition, thereby when the wrong line, protect telecommunications line unit.
When the receiving circuit of indoor unit detects the pulse with source power supply frequency according to the input of receiving circuit, the light receiving unit 23b of indoor transmission photo-coupler 23 opens, it is opposite with the operation of the light receiving unit 15b of outdoor transmission photo-coupler 15, thereby makes signal of communication circuit 3c and source power supply line short wherein.Therefore, the light receiving unit 23b of indoor transmission photo-coupler 23 is protected, thereby even when outdoor unit does not know that wrong line and outdoor unit send data, does not apply the voltage above the photo-coupler resistive voltage.And commercial supply line becomes short circuit when carrying out this operation under some wrong ray mode.At this problem; be used to protect the positive temperature characteristic thermistor 25 that not damaged by oversampling circuit to connect with the light receiving unit 23b of indoor transmission photo-coupler 23; so that restriction and inhibition communication current, thereby even the transmission and the receiving circuit of indoor unit are not damaged yet when the short circuit of commercial supply line.Therefore, the resistance of positive temperature characteristic thermistor 25 increases rapidly owing to the self-heating when the short circuit of commercial supply line.As a result, thus suppressed the light receiving unit 23b that short circuit current has been protected indoor transmission photo-coupler 23.
And it is possible automatically reseting, thereby by adopting microcomputer to utilize WatchDog Timer to protect communication line in its wrong line walk to miss the season layout of runback position before damaging.
Fig. 5 (A)-5 (F) is for understanding the oscillogram of communication from the outdoor unit to the indoor unit when the wrong line not.Fig. 5 (A), 5 (B), 5 (C), 5 (D), 5 (E) and 5 (F) represent that respectively outdoor transmission waveform, outdoor reception waveform, indoor 1 send waveform, indoor 1 and receive waveform, indoor 2 transmission waveforms and indoor 2 reception waveforms.But actual communication waveforms is determined according to the rule of communication between outdoor unit and the indoor unit, does not therefore always realize the waveform shown in Fig. 5 (A)-5 (F).
In this case, open and closing-open operation after the execution transmission signal after the maintenance scheduled time from closing to become at outdoor transmission waveform.Send the Optical Transmit Unit 15a of photo-coupler 15 outside the circuit control room of forming by transistor 15c and resistance 15d and 15e, and the received signal output of determining the light receiving unit 24b of the received signal output of light receiving unit 16b of outdoor reception photo-coupler 16 and indoor reception photo-coupler 24 has layout as shown in Figure 1.Therefore, outdoor reception waveform becomes the waveform consistent with outdoor transmitted waveform, and indoor 1 reception waveform and indoor 2 reception waveforms all become and the consistent waveform of outdoor transmission waveform.And indoor unit 1 and indoor unit 2 do not send signal, and therefore indoor 1 transmission waveform and indoor 2 sends waveforms and is held open state.
Fig. 6 (A)-6 (F) is for understanding the oscillogram of communicating by letter with indoor unit 2 from indoor unit 1 to outdoor unit when the wrong line not.Fig. 6 (A), 6 (B), 6 (C), 6 (D), 6 (E) and 6 (F) represent that respectively outdoor transmission waveform, outdoor reception waveform, indoor 1 send waveform, indoor 1 and receive waveform, indoor 2 transmission waveforms and indoor 2 reception waveforms.But actual communication waveforms is determined according to the rule of communication between outdoor unit and the indoor unit, does not therefore always realize the waveform shown in Fig. 6 (A)-6 (F).
In this case, sending waveform indoor 1 is held open state and carries out transmission signal closing-open operation afterwards the scheduled time after.Send the Optical Transmit Unit 23a of photo-coupler 23 in the circuit control room of forming by transistor 23c and resistance 23d and 23e, and the received signal output of determining the light receiving unit 24b of the received signal output of light receiving unit 16b of outdoor reception photo-coupler 16 and indoor reception photo-coupler 24 has layout as shown in Figure 1.Therefore, indoor 1 receives waveform becomes and the consistent waveform of indoor 1 transmitted waveform, and outdoor reception waveform and indoor 2 reception waveforms become and the consistent waveform of indoor 1 transmission waveform.And outdoor unit and indoor unit 2 do not send signal, and therefore outdoor transmission waveform and indoor 2 sends waveform and is held open state.
Fig. 7 (A)-7 (E) is for understanding the oscillogram of communication data and signal of communication line loop operation between outdoor unit and the indoor unit.Fig. 7 (A), 7 (B), 7 (C), 7 (D) and 7 (E) represent that respectively outdoor transmission waveform, outdoor reception waveform, communication line waveform, indoor 1 send waveform and indoor 1 and receive waveform.But actual communication waveforms is determined according to the rule of communication between outdoor unit and the indoor unit, does not therefore always realize the waveform shown in Fig. 7 (A)-7 (E).
In this case, closing-open operation after the execution transmission signal, thus begin to keep to send data after the Preset Time opening in outdoor transmission waveform unlatching and from closing.Send the Optical Transmit Unit 23a of photo-coupler 23 in the circuit control room of forming by transistor 23c and resistance 23d and 23e, and the received signal output of determining the light receiving unit 16b of outdoor reception photo-coupler 16 has layout as shown in Figure 1.Therefore, outdoor reception waveform becomes and the consistent waveform of outdoor transmission waveform, therefore can monitor the transmission data.Certainly, these data are sent to indoor unit 1 through signal line 3c, and determine that the received signal output of the light receiving unit 24b of indoor reception photo-coupler 24 has layout shown in Figure 1.Therefore, communication line waveform and indoor 1 reception waveform all become consistent with outdoor transmission waveform.And indoor unit 1 does not send signal, and therefore indoor 1 transmission waveform is held open state.
Carrying out in the above described manner from outdoor unit after indoor unit 1 sends data, by carry out send that indoor 1 after the signal send waveform close-open the transmission data.Send the Optical Transmit Unit 23a of photo-coupler 23 in the circuit control room of forming by transistor 23c and resistance 23d and 23e, and the received signal output of determining the light receiving unit 24b of outdoor reception photo-coupler 24 has layout as shown in Figure 1.Therefore, indoor 1 receives waveform becomes and the consistent waveform of indoor 1 transmission waveform, therefore can monitor the transmission data.Certainly, these data are sent to outdoor unit through signal line 3c, and determine that the received signal output of the light receiving unit 16b of indoor reception photo-coupler 16 has layout shown in Figure 1.Therefore, the communication line waveform all becomes consistent with indoor 1 transmission waveform with outdoor reception waveform.And outdoor unit does not send signal, and therefore outdoor transmission waveform is held open state.
Fig. 8 (A)-8 (E) and Fig. 9 (AA)-9 (AE) show the wrong ray mode.There is the situation of an outdoor unit and an indoor unit in Fig. 8 (A)-8 (E) expression, and there are the situation of outdoor unit and two indoor units in Fig. 9 (AA) and 9 (AE) expression.
Situation when Fig. 9 (AA)-9 (AE) is illustrated respectively in the situation when wrong ray mode shown in Fig. 8 (A) takes place between the outdoor unit and first indoor unit and wrong ray mode shown in Fig. 8 (A)-8 (E) takes place between first indoor unit and second indoor unit.It is the combined situation of Fig. 9 (AA)-9 (AE) above-mentioned wrong ray mode of expression.Therefore, the wrong ray mode is basic identical shown in the wrong ray mode shown in Fig. 9 (AA)-9 (AE) and Fig. 8 (A)-8 (E).Even when increasing the indoor unit quantity of wrong line, the wrong ray mode is also basic identical with wrong ray mode shown in Fig. 8 (A)-8 (E).
Then by the operation under these situations of Figure 10-14 detailed description, these situations are the wrong ray mode shown in corresponding diagram 8 (A)-8 (E) respectively.
Figure 10 is the schematic diagram of commercial 3a of supply line and signal line 3c misconnection state.
In Figure 10, the Optical Transmit Unit 24a and the zener diode 26c of the 3rd diode 26a, the 5th resistance 26b, indoor reception photo-coupler 24 connect between the output of commercial ac power source 10.Therefore shown in arrow A among Figure 10 1, the cycle of per half commercial ac power source 10 has electric current to flow through.In this case, indoor control dc source 21 cuts out from commercial AC power 10, thereby does not provide electric energy to indoor microcomputer 22.Therefore, indoor microcomputer 22 does not move.In this case, electric current flows directly to the Optical Transmit Unit 24a of indoor reception photo-coupler 24.But the 5th resistance 26b connects, thereby prevents that Optical Transmit Unit 24a from damaging.
And in this case, do not offer outdoor unit 1, thereby the overtime wrong line that detects in the output unit 1 after sending according to signal from the signal of indoor unit 2.
Figure 11 is the schematic diagram of commercial 3b of supply line and signal line 3c misconnection state.
In Figure 11, in the half period of commercial ac power source 10, shown in arrow A 1, electric current is through the control dc source 21 of indoor unit 2 flow through series circuit that Optical Transmit Unit 16a and zener diode 18e by the second diode 18c, the 4th resistance 18d, outdoor reception photo-coupler 16 form and the terminating resistor 17 in parallel with series circuit, thereby is that outdoor microcomputer 14 produces and receives data and interrupt.And, in the half period in addition of commercial ac power source 10, electric current the flow through series circuit formed by the Optical Transmit Unit 24a of the 3rd diode 26a, the 5th resistance 26d, indoor reception photo-coupler 24 and zener diode 26c and end resistance 17, the control dc source 21 of the indoor unit 2 of flowing through again of connecing in parallel with series circuit.As a result, the control dc source 21 of indoor unit 2 rises, and therefore indoor microcomputer 22 rises, thereby the source power supply frequency that detects indoor microcomputer 22 is interrupted.Therefore, detect the wrong line that flow chart operation shown in Figure 2 and flow chart shown in Figure 3 operation produce.In this case, the 5th resistance 26b connects with the Optical Transmit Unit 24a of indoor reception photo-coupler 24, and commercial electric energy offers this series circuit through control dc source 21, the shortcoming of therefore having avoided Optical Transmit Unit 24a to damage.And, the 4th resistance 18d connects with the Optical Transmit Unit 16a of outdoor reception photo-coupler 16, terminating resistor 17 is in parallel with the Optical Transmit Unit 16a of outdoor reception photo-coupler 16, and commercial electric energy offers these circuit through control dc source 21, the shortcoming of therefore having avoided Optical Transmit Unit 16a to damage.
Figure 12 is the schematic diagram of commercial 3a of supply line and 3b misconnection state.
In Figure 12, in the half period of commercial ac power source 10, shown in arrow A 1, only the flow through control dc source 21 of indoor unit 2 of electric current.And, the series circuit that electric current is flowed through terminating diode 17 and is made up of the Optical Transmit Unit 24a and the zener diode 26c of the 3rd diode 26a, the 5th resistance 26b, indoor reception photo-coupler 24, subsequently in the in addition half period of commercial ac power source 10, the direction control dc source 21 of indoor unit 2 of flowing through shown in arrow A 2.In this case, the two ends of commercial ac power source 10 are connected with the control dc source 21 of indoor unit 2 under give-and-take conditions, thereby control dc source 21 and indoor microcomputer 22 are normally moved.Therefore, electric current is by the Optical Transmit Unit 24a of indoor reception photo-coupler 24, thereby is that indoor microcomputer 22 produces the source power supply frequencies and interrupts.Therefore, detect the wrong line that flow chart operation shown in Figure 2 and flow chart shown in Figure 3 operation produce.That is, judge by judging that input and output are whether consistent whether the wrong line exists.In this case, the 5th resistance 26b connects with the Optical Transmit Unit 24a of indoor reception photo-coupler 24, and therefore electric current has avoided the shortcoming of the Optical Transmit Unit 24a damage of indoor reception photo-coupler 24 by terminating resistor 17 and this series circuit.
Figure 13 is the schematic diagram of the commercial 3a of supply line and signal line 3c misconnection, signal line 3c and the commercial 3b of supply line misconnection and source power supply circuit 3b and the commercial 3a of supply line misconnection state.
In Figure 13, in the half period of commercial ac power source 10, shown in arrow A 1, the series circuit that electric current is flowed through and is made up of the Optical Transmit Unit 24a of the 3rd diode 26a, the 5th resistance 26b, indoor reception photodiode 24 and zener diode 26c, series circuit that Optical Transmit Unit 16a and the zener diode 18e by the second diode 18c, the 4th resistance 18d, outdoor reception photo-coupler 16 of flowing through subsequently forms and the terminating resistor 17 in parallel with this series circuit.In this case, the control dc source 21 of indoor unit 2 does not rise, and indoor subsequently microcomputer 22 does not rise, and does not interrupt thereby do not produce the source power supply frequency.But, receive the data interruption for outdoor microcomputer 14 produces.Therefore, detect the wrong line that flow chart operation shown in Figure 3 produces.In this case, the 5th resistance 26b and terminating resistor 17 are connected with the Optical Transmit Unit 24a of indoor reception photo-coupler 24, the Optical Transmit Unit 16a of the 5th resistance 26b, the 4th resistance 18d and outdoor reception photo-coupler 16 connects with the Optical Transmit Unit 24a of indoor reception photo-coupler 24, the shortcoming of therefore having avoided the Optical Transmit Unit 24a of the Optical Transmit Unit 16a of outdoor reception photo-coupler 16 and indoor reception photo-coupler 24 to damage.
In this case, do not offer outdoor unit 1, thereby overtime after sending according to signal detects the wrong line that outdoor unit 1 causes from the signal of indoor unit 2.
Figure 14 is the schematic diagram of the commercial 3a of supply line and the commercial 3b of supply line, signal line 3c and the commercial 3a of supply line and source power supply circuit 3b and signal line 3c misconnection state.
In Figure 14, in the half period of commercial ac power source 10, shown in arrow A 1, the flow through control dc source 21 of indoor unit 2 of electric current, series circuit that the Optical Transmit Unit 16a by the second diode 18c, the 4th resistance 18d, outdoor reception photo-coupler 16 of flowing through subsequently forms and the terminating resistor 17 in parallel with this series circuit, thus be that outdoor microcomputer 14 produces and receives data and interrupt.And, in the half period in addition of commercial ac power source 10, shown in arrow A 2, the flow through control dc source 21 of terminating resistor 17 and indoor unit 2 of electric current, and electric current flow through the Optical Transmit Unit 24a and the zener diode 26c of the 3rd diode 26a, the 5th resistance 26b, indoor reception photo-coupler 24, thereby the control dc source 21 of indoor unit 2 is risen, interrupt for indoor microcomputer 22 produces the source power supply frequency.Therefore, detect the wrong line that flow chart operation shown in Figure 2 and flow chart shown in Figure 3 operation produce.In this case, commercial ac power source is applied directly in the series circuit that Optical Transmit Unit 24a and the 5th resistance 26b by indoor reception photo-coupler 24 form.But, owing to the 5th resistance 26b connects with the Optical Transmit Unit 24a of indoor reception photo-coupler 24, so the shortcoming of having avoided the Optical Transmit Unit 24a of indoor reception photo-coupler 24 to damage.And the 4th resistance 18d connects with the Optical Transmit Unit 16a of outdoor reception photo-coupler 16, and terminating resistor 17 is in parallel with the Optical Transmit Unit 16a of outdoor reception photo-coupler 16, thus the shortcoming of having avoided Optical Transmit Unit 16a to damage.
Certainly, in Figure 10-14, the positive temperature characteristic thermistor 25 of overcurrent protection is connected with the light receiving unit 23b of indoor reception photo-coupler 23.Therefore, even be applied directly on the series circuit and when sending the light receiving unit 23b of photo-coupler 23 in the opening chamber, also can prevent the damage of the light receiving unit 23b of indoor reception photo-coupler 23 at commercial ac voltage.
Therefore, interrupt whether existing by judging the source power supply frequency, judge whether to exist to receive that data are interrupted and the transmit port of judging outdoor microcomputer 14 sends output after opening and whether receive input consistent, carry out the whether judgement of wrong line.
And, only when the wrong line, just need wrong line holding circuit, and irrelevant with normal running, thus sending controling circuit low-cost and the saving space can be provided.And, even device can safe operation when the wrong line, send and receiving circuit unit can not damage, need not to exchange substrate and safeguard outstanding system thereby provide.
For indoor-outdoor pattern that transmits and receive data, sending data appears on the receiving port, thereby make the Nasa communications operating procedures Nasa of outdoor unit and indoor unit consistent, and can under the initial communication condition, from outdoor unit and indoor unit carry out transmission and receive.And the data that send from a unit are received simultaneously by each unit, thereby the system of high transmitting efficiency and expansion efficiency can be provided.
In the above-described embodiments; the positive temperature characteristic thermistor that adopts overcurrent protection still can adopt the resistance unit with conductive carbon and polymer (such as polyolefin, fluororesin) combination manufacturing to replace positive temperature characteristic thermistor to make overcurrent protection as second resistance device with positive temperature coefficient.
Figure 15 is the electrical schematic according to indoor-outdoor communication device in the air-conditioner of another embodiment of the present invention.
The difference of this air-conditioner and air-conditioner shown in Figure 1 is to adopt damping resistance 25 ' to replace positive temperature characteristic thermistor 25, comprise the transformer 12a that is connected the elementary winding between source power supply 10 outputs, the power supply of indoor control DC power supply circuit 21c that is connected the rectification circuit 21b at transformer 21a secondary windings two ends and receives rectification output and carry out smooth operation and voltage stable operation from rectification circuit 21b is as power supply 21, and adopts the circuit that detects the input of exceptional condition from the abnormal voltage testing circuit, devices etc. are as abnormal voltage testing circuit and indoor microcomputer 22.
Below describe in detail.
Figure 16 is a flow chart of understanding indoor unit wrong line decision operation.
In step SP1, the transmit port of microcomputer 22 in the opening chamber (sending the light receiving unit 23b of photo-coupler 23 in the close chamber).In step SP2, judge whether to exist the source power supply frequency to interrupt.When judgement exists the source power supply frequency to interrupt, find that at step SP3 the connection of indoor-outdoor connection line 3 is unusual.In step SP4, judge whether to detect abnormal voltage.When detecting abnormal voltage, in step SP5, find wrong line (shown in Figure 11 or 14) except that polarity is opposite.In step SP6, the transmit port of microcomputer 22 in the opening chamber (sending the light receiving unit 23b of photo-coupler 23 in the close chamber).So complete operation series.
When judgement does not detect abnormal voltage in step SP4, in step SP7, judge to belong to opposite polarity wrong line (wrong line shown in Figure 12).At step SP8, the transmit port of microcomputer 22 in the close chamber (sending the light receiving unit 23b of photo-coupler 23 in the opening chamber).So complete operation series.
When judgement in step SP2 does not exist the source power supply frequency to interrupt, find that at step SP9 the connection of indoor-outdoor connection line 3 is normal.At step SP10, according to the normal sequence executable operations.
Below be described in detail.
When producing the wrong line, realize passing through certainly the current loop of terminating resistor 17.Therefore, when the resistance of terminating resistor 17 is defined as impedance greater than transformer 21a, do not produce normal voltage in the primary side of transformer 21a.When the power supply (indoor control DC power supply circuit 21c) of wrong line and indoor microcomputer 22 rises, can monitor the voltage of transformer 21a primary side.And can whether there be kind with the voltage detecting wrong line of transformer 21a primary side according to the pulse that comprises the source power supply frequency; and owing to when the wrong line, have the receiving port that the pulse of source power supply frequency is transfused to indoor microcomputer 22, so thereby the telecommunication circuit unit is protected in the most of correct protection operation of carrying out corresponding wrong line kind.And, represent wrong line kinds of information by sending to installation personnel through display unit, improved solving the operational capacity of wrong line and having accelerated safe connection.When the wrong line (Figure 10 or shown in Figure 13) the wrong line that occur to remove flowchart operation detection shown in Figure 16, the indoor control DC power supply circuit 21c of indoor unit 2 does not rise, thus defective communication circuit unit not.
And, when finishing the power supply of communication by dc source, compare with conventional system (system comprise can with the telecommunication circuit of the communication speed synchronous communication of communication power supply frequency baud rate twice), communication speed is improved greatly, thereby can realize operating compatible system, thereby after the input of remote controllers (not shown), the operating delay of this system is very little.In all the other embodiment, can realize this operation and effect.
Provide the layout of an indoor unit 2 when be adopted as an outdoor unit 1 in each embodiment, the circuit layout of the circuit layout of outdoor unit 1 and indoor unit 2 can be intercoursed.
Industrial applicibility
Need not and general room-outdoor communication according to indoor-outdoor communication device in the air-conditioner of the present invention The circuit layout (detecting protection part etc. such as power switch, abnormal voltage) that operation is irrelevant, even and During the wrong line, by indoor-outdoor communication device is placed in the air-conditioner, wherein indoor unit is through comprising Three connection lines of commercial supply line are connected with outdoor unit, prevent that the transmission and reception circuit unit from decreasing Bad, sudden turn of events etc.
Claims (5)
1. indoor-outdoor communication device in the air-conditioner comprises outdoor unit (1) and is connected to the indoor unit (2) of outdoor unit (1) through three connection lines (3) that three connection lines comprise commercial supply line (3a) (3b),
One of them of outdoor unit (1) and indoor unit (2) comprise first control device (14), send to first electric supply installation (11) of first control device (14) power supply, between first control device (14) and received signal first send the photo-coupler (15) and the first reception photo-coupler (16), photo-coupler is connected between commercial ac power source (10) terminal through DC power supply apparatus (12), and receive photo-coupler (16) first resistance device (17) in parallel with first, and
Another of outdoor unit (1) and indoor unit (2) comprise second control device (22), between second control device (22), send and received signal second send the photo-coupler (23) and the second reception photo-coupler (24), it is in parallel that photo-coupler in three connection lines (3) two and first receives photo-coupler (16), and second resistance device (25) that is used to suppress the overcurrent that causes because of the wrong line, resistance device (25) and second sends photo-coupler (23) and connects.
2. indoor-outdoor communication device in the air-conditioner comprises the indoor unit (2) that an outdoor unit (1) and a plurality of commercial supply lines (3a) through comprising mutual parallel connection three connection lines (3) (3b) are connected with outdoor unit (1),
Outdoor unit (1) comprises outdoor control device (14), send to the outdoor control electric supply installation (11) of outdoor control device (14) power supply, between outdoor control device (14) and the outdoor transmission photo-coupler (15) and the outdoor reception photo-coupler (16) of received signal, photo-coupler is connected between commercial ac power source (10) terminal through DC power supply apparatus (12), and first resistance device (17) in parallel with outdoor reception photo-coupler (16), and
Each indoor unit (2) comprises through commercial supply line (3a) and (3b) is connected indoor control electric supply installation (21) between commercial ac power source (10) terminal, Indoor Control Device (22) by indoor control electric supply installation (21) power supply, the indoor reception photo-coupler (24) and the indoor transmission photo-coupler (23) of transmission and received signal between Indoor Control Device (22), photo-coupler two in three connection lines (3) are in parallel with outdoor reception photo-coupler (16), and second resistance device (25) that is used to suppress the overcurrent that causes because of the wrong line, resistance device (25) is connected with indoor transmission photo-coupler (23).
3. indoor-outdoor communication device adopts the thermistor (25) of positive temperature characterisitic as second resistance device (25) in the air-conditioner as claimed in claim 1 or 2.
4. indoor-outdoor communication device in the air-conditioner comprises outdoor unit (1) and is connected to the indoor unit (2) of outdoor unit (1) through three connection lines that three connection lines comprise commercial supply line (3a) (3b),
One of them of outdoor unit (1) and indoor unit (2) comprise first control device (14), to the first control electric supply installation (11) of first control device (14) power supply, between first control device (14), send and received signal first send the photo-coupler (15) and the first reception photo-coupler (16), photo-coupler is connected between commercial ac power source (10) terminal through DC power supply apparatus (12), and receive photo-coupler (16) first resistance device (17) in parallel with first, and
Another of outdoor unit (1) and indoor unit (2) comprises the transformer (21a) that (3b) is connected with commercial ac power source (10) terminal through commercial supply line (3a), to be transformed to the fairing (21b) of DC voltage from the output voltage of transformer (21a), abnormal voltage checkout gear (21g) according to the operation of the DC voltage of conversion, be connected second electric supply installation (21c) between fairing (21b) output, be provided the second control device (22) of conversion DC voltage, second of transmission and received signal sends the photo-coupler (23) and the second reception photo-coupler (24) between second control device (22), it is in parallel that photo-coupler in three connection lines (3) two and first receives photo-coupler (16), and send second resistance device (25 ') that photo-coupler (23) is connected with second.
5. indoor-outdoor communication device comprises the indoor unit (2) that an outdoor unit (1) and a plurality of commercial supply lines (3a) through comprising mutual parallel connection three connection lines (3) (3b) are connected with outdoor unit (1) in the air-conditioner,
Outdoor unit (1) comprises outdoor control device (14), send to the outdoor control electric supply installation (11) of outdoor control device (14) power supply, between outdoor control device (14) and the outdoor transmission photo-coupler (15) and the outdoor reception photo-coupler (16) of received signal, photo-coupler is connected between commercial ac power source (10) terminal through DC power supply apparatus (12), and first resistance device (17) in parallel with outdoor reception photo-coupler (16), and
Each indoor unit (2) comprises the transformer (21a) that (3b) is connected with commercial ac power source (10) terminal through commercial supply line (3a), to be transformed to the fairing (21b) of DC voltage from the output voltage of transformer (21a), abnormal voltage checkout gear (21g) according to the operation of the DC voltage of conversion, be connected the indoor control electric supply installation between fairing (21b) output, be provided the Indoor Control Device (22) of conversion DC voltage, the indoor transmission photo-coupler (23) and the indoor reception photo-coupler (24) of transmission and received signal between indoor control control device (22), photo-coupler two in three connection lines (3) are in parallel with outdoor reception photo-coupler (16), and second resistance device (25 ') of connecting with indoor transmission photo-coupler (23).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36796897A JP3399337B2 (en) | 1997-12-29 | 1997-12-29 | Indoor and outdoor communication devices in air conditioners |
| JP367968/1997 | 1997-12-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1292077A true CN1292077A (en) | 2001-04-18 |
| CN1116556C CN1116556C (en) | 2003-07-30 |
Family
ID=18490648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99803408A Expired - Lifetime CN1116556C (en) | 1997-12-29 | 1999-01-04 | Indoor-outdoor communication device in air-conditioner |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1036995B1 (en) |
| JP (1) | JP3399337B2 (en) |
| CN (1) | CN1116556C (en) |
| AT (1) | ATE222343T1 (en) |
| DE (1) | DE69902511T2 (en) |
| ES (1) | ES2182477T3 (en) |
| WO (1) | WO1999034152A1 (en) |
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| CN101449111B (en) * | 2006-06-01 | 2012-04-25 | 三菱电机株式会社 | An apparatus-machine management system, a control method thereof and an apparatus-machine management device |
| CN1871786B (en) * | 2003-10-21 | 2013-11-20 | 松下电器产业株式会社 | Facilities equipment communication circuit |
| CN104390306A (en) * | 2014-10-24 | 2015-03-04 | 珠海格力电器股份有限公司 | Air conditioner communication system, air conditioner communication method and air conditioner |
| CN104990197A (en) * | 2015-05-13 | 2015-10-21 | 广东美的制冷设备有限公司 | Air conditioner, outdoor unit and power supply control system thereof |
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| CN111656104A (en) * | 2019-01-15 | 2020-09-11 | 海信（广东）空调有限公司 | Air conditioner outdoor unit and air conditioner |
| CN115247870A (en) * | 2022-05-31 | 2022-10-28 | 浙江中广电器集团股份有限公司 | Air conditioner and energy-saving operation control method thereof |
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| AU2002300420B2 (en) * | 2000-05-23 | 2005-02-24 | Mitsubishi Denki Kabushiki Kaisha | Control circuit for an air conditioner |
| AU753916C (en) | 2000-05-23 | 2005-12-22 | Mitsubishi Denki Kabushiki Kaisha | Control circuit for an air conditioner |
| JP4547950B2 (en) * | 2004-03-15 | 2010-09-22 | ダイキン工業株式会社 | Air conditioner and control method |
| JP3806882B2 (en) * | 2004-11-29 | 2006-08-09 | ダイキン工業株式会社 | Air conditioner |
| JP2009079811A (en) * | 2007-09-26 | 2009-04-16 | Sanyo Electric Co Ltd | Air conditioning system and indoor unit |
| JP4958936B2 (en) * | 2009-04-13 | 2012-06-20 | 三菱電機株式会社 | Air conditioning system diagnostic device |
| JP6368663B2 (en) * | 2015-02-27 | 2018-08-01 | 日立ジョンソンコントロールズ空調株式会社 | Air conditioner system and program |
| CN113587385B (en) * | 2021-07-13 | 2022-10-04 | Tcl空调器(中山)有限公司 | Communication fault processing method and control system for indoor and outdoor units of air conditioner and air conditioner |
| CN115773564B (en) * | 2022-06-23 | 2024-07-05 | 珠海格力电器股份有限公司 | Air conditioner control method, system, circuit, equipment and storage medium |
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| JP2931654B2 (en) * | 1990-08-31 | 1999-08-09 | 株式会社東芝 | Air conditioner |
| JP2916656B2 (en) * | 1992-10-12 | 1999-07-05 | シャープ株式会社 | Air conditioner |
| JP3214110B2 (en) | 1992-11-13 | 2001-10-02 | 松下電器産業株式会社 | Indoor / outdoor communication control device for air conditioner |
| JPH07133950A (en) * | 1993-11-09 | 1995-05-23 | Sharp Corp | Signal transmission circuit of air conditioner |
| JP3379226B2 (en) * | 1994-07-25 | 2003-02-24 | 三菱電機株式会社 | Control device for air conditioner |
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- 1997-12-29 JP JP36796897A patent/JP3399337B2/en not_active Expired - Fee Related
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- 1999-01-04 AT AT99900032T patent/ATE222343T1/en not_active IP Right Cessation
- 1999-01-04 WO PCT/JP1999/000002 patent/WO1999034152A1/en active IP Right Grant
- 1999-01-04 CN CN99803408A patent/CN1116556C/en not_active Expired - Lifetime
- 1999-01-04 EP EP99900032A patent/EP1036995B1/en not_active Expired - Lifetime
- 1999-01-04 DE DE69902511T patent/DE69902511T2/en not_active Expired - Lifetime
- 1999-01-04 ES ES99900032T patent/ES2182477T3/en not_active Expired - Lifetime
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| CN104390306A (en) * | 2014-10-24 | 2015-03-04 | 珠海格力电器股份有限公司 | Air conditioner communication system, air conditioner communication method and air conditioner |
| CN107078976B (en) * | 2014-10-28 | 2020-01-17 | 三菱电机株式会社 | Communication system and transmission device |
| CN107078976A (en) * | 2014-10-28 | 2017-08-18 | 三菱电机株式会社 | Communication system and dispensing device |
| CN104990197A (en) * | 2015-05-13 | 2015-10-21 | 广东美的制冷设备有限公司 | Air conditioner, outdoor unit and power supply control system thereof |
| CN104990197B (en) * | 2015-05-13 | 2017-10-31 | 广东美的制冷设备有限公司 | Air conditioner, outdoor unit and its electric power supply control system |
| CN111656104B (en) * | 2019-01-15 | 2021-09-17 | 海信（广东）空调有限公司 | Air conditioner outdoor unit and air conditioner |
| CN111656104A (en) * | 2019-01-15 | 2020-09-11 | 海信（广东）空调有限公司 | Air conditioner outdoor unit and air conditioner |
| US11971180B2 (en) | 2019-01-15 | 2024-04-30 | Hisense (Guangdong) Air Conditioner Co., Ltd. | Outdoor unit of air conditioner, and air conditioner |
| CN110470037B (en) * | 2019-08-01 | 2021-06-22 | 广东美的制冷设备有限公司 | Anti-reverse connection circuit, method and device for power line of variable frequency air conditioner and air conditioner |
| CN110470037A (en) * | 2019-08-01 | 2019-11-19 | 广东美的制冷设备有限公司 | Reverse-connection preventing circuit, method, apparatus and the air conditioner of convertible frequency air-conditioner power supply line |
| CN115247870A (en) * | 2022-05-31 | 2022-10-28 | 浙江中广电器集团股份有限公司 | Air conditioner and energy-saving operation control method thereof |
| CN115247870B (en) * | 2022-05-31 | 2023-09-08 | 浙江中广电器集团股份有限公司 | Air conditioner and energy-saving operation control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1036995A1 (en) | 2000-09-20 |
| CN1116556C (en) | 2003-07-30 |
| ATE222343T1 (en) | 2002-08-15 |
| DE69902511T2 (en) | 2003-04-03 |
| JPH11193950A (en) | 1999-07-21 |
| JP3399337B2 (en) | 2003-04-21 |
| DE69902511D1 (en) | 2002-09-19 |
| WO1999034152A1 (en) | 1999-07-08 |
| EP1036995A4 (en) | 2000-12-06 |
| ES2182477T3 (en) | 2003-03-01 |
| EP1036995B1 (en) | 2002-08-14 |
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