CN1083089C - Air conditioner - Google Patents
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- CN1083089C CN1083089C CN 94108102 CN94108102A CN1083089C CN 1083089 C CN1083089 C CN 1083089C CN 94108102 CN94108102 CN 94108102 CN 94108102 A CN94108102 A CN 94108102A CN 1083089 C CN1083089 C CN 1083089C
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Abstract
To transmit a commercial AC voltage, a DC voltage and information signals between an indoor unit and an outdoor unit. A commercial AC voltage from a commercial power source 9 received by an indoor unit 13 is sent to a DC power source 12 of an outdoor unit 14 through a connecting line 18 to generate a DC voltage. This DC voltage is sent to the unit 13 through a connecting line 19, and used as a power source voltage of an electric component such as an indoor controller 10, an indoor blower 7, etc., in th unit 13. An information signal output from an indoor controller 10 is modulated by a modem 17-a, superposed on the DC voltage at the line 19, and transmitted to the unit 14 through the line 19. The signal is demodulated by a modem 17-b in the unit 14, and supplied to an outdoor controller 11. The signal output from the circuit 11 is similarly transmitted to the controller 10.
Description
The present invention relates to a kind of detachable air conditioner that is divided into indoor unit and outdoor unit.
A kind of traditional detachable air conditioner is disclosed among the JP-A-4-73543.Fig. 1 is the block diagram that representation class is similar to disclosed the sort of traditional detachable air conditioner structure among the JP-A-4-73543 above-mentioned.In Fig. 1, label 1 is represented compressor, and 2 representatives are used for the motor of drive compression machine, and 3 represent indoor heat exchanger, 4 agent's room external heat exchangers, and 5 represent back valve, and 6 represent capillary.These devices have constituted refrigerant cycles.In addition, 7 and 8 represent fan electromotor respectively.9 representatives are as the commercial energy of air conditioner energy source.10 agent's room inner control circuits, 11 agent's rooms are controlled circuit outward, and 12 represent DC power supply circuit, and 17 represent modulation-demodulation circuit, and 19 (19-a and 19-b) represent connection line.
In the air-conditioner of prior art, receive from the electric energy of commercial energy 9 and provide it to DC power supply circuit 12 by outdoor unit 14.DC power supply circuit 12 can produce a low-voltage dc power supply and dc source be offered the indoor control circuit 10 of indoor unit 13 by connection line.Indoor control circuit 10 is controlled whole air-conditioner according to room temperature and design temperature, as carries out the control that compressor 1 is shut down control and fan electromotor 7.Outdoor control circuit 11 is according to the instruction control outdoor unit 14 of indoor control circuit 10.Information transmission between indoor control circuit 10 and the outdoor control circuit 11 is to utilize the modulation and demodulation circuit 17 link to each other with connection line 19 high-frequency modulation signal that superposes on dc source to finish.
JP-A-56-155326, JP-A-57-55341 and JP-A-2-21153 can be used as other example of prior art air-conditioner
Briefly be described in disclosed air-conditioner among the above-mentioned JP-A-221153 now with reference to Fig. 1.Information transmission between indoor control circuit 10 and the outdoor control circuit 11 is repeatedly to interrupt and ways of connecting is superimposed upon the voltage of DC power supply circuit 12 on the dc source of connection line 19 and carries out simultaneously utilizing.(it should be noted that in addition modulation-demodulation circuit 17-a and 17-b are connected in series with connection line 19 in the prior art).
According to the prior art, information carrying signal between indoor control circuit 10 and the outdoor control circuit 11 can be superimposed upon from outdoor unit 14 and deliver on the dc source of indoor unit 13, thereby be created in the effect that only needs to use line 18 in the line between indoor unit 13 and the outdoor unit.
Because in the air-conditioner of above-mentioned prior art, outdoor unit receives the electric energy from commercial energy, so it need install the electric wire of drawing from distribution board (switchboard), so that commercial energy is offered outdoor unit.Yet, though the wall inner surface in the general family that room air conditioner is installed all is equipped with the socket (outlet) that room conditioning is used, so there is such problem in the air-conditioner of the prior art: this socket can not use, and electric wire also must be reinstalled.In addition, drive because electric fan is the high-voltage ac power of the automatic line of force of origin, so the parts on the drive circuit, not only size is big as Wind speed switch circuit etc., but also needs to cover thing such as steel plate, to prevent that parts are owing to being subjected to that high pressure generates heat or on fire.
In addition, owing to do not consider when prior art unusual situation occurs to the information transmission between indoor unit and the outdoor unit, so occur in the information transmission that the operation conditions of air-conditioner becomes unstable when unusual, and when repairing or similarly working, need spend the plenty of time.In addition, owing to do not consider the misconnection of connecting line, so the problem that indoor control circuit and dc source break down will occur when misconnection.
But in the air-conditioner of JP-A-21153, there is such problem:, can reduce so supply with the electric power of indoor unit 13 because the output voltage of DC power supply circuit 12 is interrupted and utilizes modulation-demodulation circuit 17 to connect.
An object of the present invention is to provide a kind of detachable air conditioner, these problems wherein of the prior art have obtained solution.
Another object of the present invention provides a kind of detachable air conditioner that does not need to install new distributing equipment when installing an air-conditioner device.
A further object of the invention provides a kind of body formula air-conditioner, and wherein indoor control circuit is done to such an extent that size is less.
Another object of the present invention provides a kind of information transfer device between indoor unit and outdoor unit, does not wherein reduce the electric power that offers indoor unit.
To achieve these goals, according to one aspect of the present invention, a kind of air-conditioner is characterized in that comprising:
Outdoor unit with the motor of the compressor that is used for the drive compression cold-producing medium, a fan electromotor and an outdoor control circuit;
Indoor unit with indoor control circuit and fan electromotor;
First group of connection line that indoor unit and outdoor unit are interconnected with one another;
Second group of connection line that indoor unit and outdoor unit are interconnected with one another;
Described indoor unit also comprises the device that receives electric energy from the commercial energy, and the described electric energy that receives from the commercial energy is sent to described outdoor unit by described second group of connection line;
Described outdoor unit comprises that also at least one is used for described commercial energy is converted to the dc source of predetermined voltage, and the electric energy of the described dc source of at least a portion is sent to described outdoor unit by described first group of connection line;
At the described indoor control circuit of described indoor unit and the structure of fan electromotor it is worked on described dc source.
Utilize the socket (output) of a room air conditioner to make the electric energy of indoor unit reception, send electric energy to outdoor unit by connecting line then from commercial energy.
The operation indoor unit can be removed the high voltage component of indoor unit from low-voltage dc power supply.
It is unstable that the state that can prevent air-conditioner becomes, and can learn by the abnormal conditions in the transmission of detection information to stop the error condition of appearance the operation of air-conditioner simultaneously and/or demonstrate this fault.
By interrupting the operation that power supply can stop indoor unit.
A misconnection holding circuit is set in indoor unit can avoid indoor control circuit and dc source to break down when the connecting line misconnection.
This purpose realizes by following method: the modulation-demodulation circuit that is connected on the connection line is provided, be used in indoor unit and outdoor unit, providing dc source, and modulate (frequency that used frequency is higher than information carrying signal) and modulated power supply is added to by power and carry out information transmission between indoor control circuit and the outdoor control circuit on the connection line of the electric power that is used to provide dc source dc source.
By read the description hereinafter carry out with reference to accompanying drawing can be well understood to more above-mentioned purpose of the present invention, feature and advantage, wherein:
Fig. 1 is the block diagram of expression air-conditioner structure of the prior art;
Fig. 2 is the block diagram of an example structure of expression air-conditioner of the present invention;
Fig. 3 is the circuit diagram of a modulation and demodulation practical circuit of expression;
Fig. 4 A to 4C is the oscillogram of each several part signal in the presentation graphs 3;
Fig. 5 is the block diagram of expression another example structure of air-conditioner of the present invention;
Fig. 6 A and 6B are the flow charts that is used to explain fault diagnosis functions embodiment illustrated in fig. 5;
Fig. 7,8,9 and 10 represents the block diagram of other embodiment of air-conditioner of the present invention respectively;
Figure 11 is the block diagram of expression another embodiment of air-conditioner of the present invention;
Figure 12 is the block diagram that is used to explain modulation and demodulation circuit embodiment illustrated in fig. 11;
Figure 13 A to 13D is the curve map that is used to explain the signal transmission system work of embodiment shown in Figure 11;
Figure 14 is the curve map of the modulating part detailed structure of embodiment shown in expression Figure 11;
Figure 15 is the curve map of the demodulation part detailed structure of embodiment shown in expression Figure 11.
Several embodiment of air-conditioner of the present invention hereinafter will be described.Attention: in the whole accompanying drawing, identical label is represented identical parts.
Fig. 2 is the block diagram of the general structure of expression one embodiment of the invention.Similar to prior art, label 1 is represented compressor, and 2 representatives drive the motor of this compressor 1, and 3 represent indoor heat converter, 4 agent's room outer heat-exchangers, and 5 represent back valve, and 6 represent capillary, and refrigerant cycles is made up of these devices.In addition, 7 represent fan electromotor, 8 representatives are by the fan electromotor that exchanges or dc source turns round, 9 represent commercial energy, 10 agent's room inner control circuits, 11 agent's rooms are controlled circuit outward, and 12 represent DC power supply circuit, 17 (17-a and 17-b) represent the modulation and demodulation circuit, and 18 (18-a and 18-b) and 19 (19-a and 19-b) represent connection line.10 pairs of whole air-conditioners of indoor control circuit are controlled, and for example carry out the control out of service of compressor 1, according to the control to fan electromotor 7 of room temperature and design temperature.Outdoor control circuit 11 is according to the instruction control outdoor unit 14 of indoor control circuit 10.
In the present embodiment, send this electric energy to outdoor unit 14 by indoor unit 13 receptions from the electric energy that is used as air conditioner energy source of commercial energy 9 and by connecting line 18.The DC power supply circuit 12 that is located in the outdoor unit 14 forms a dc source, and the electric energy (this electric energy comes from commercial energy) that is used for sending from indoor unit is by connection line 19 supply chamber inner control circuits 10.Indoor control circuit 10 carries out work by the dc source of sending here from connection line 19, and modulation-demodulation circuit 17 and outdoor control circuit 11 information transmission by linking to each other with connection line 19.Carry out the information transmission according to information carrying signal with the high frequency modulated dc source.The details of information transmission will be described below.Owing to utilized above-mentioned being used for will be from the structure in the above-mentioned indoor and outdoors detachable air conditioner of the direct current supply chamber inner control circuit of the DC power supply circuit that is installed in outdoor unit, so just can use the socket of the room air conditioner that is positioned at the indoor.In addition, because the electric component that moves all indoor units 13 from the low-voltage dc power supply of about 35V of the DC circuit 12 that is located at outdoor unit 14 is provided, for example fan electromotor 7 and indoor control circuit 10 are so just there is no need to use the high voltage component of large volume in the electric component of indoor unit 3.And, just need not use outer cover as steel plate one class owing to do not have heat and spark (fire) generation fully.Because compare with the AC power of powering to indoor unit, the peak value of dc source can control to less level, so can make the less end liner type insulation interlayer of ignition hazard.Therefore, the superiority of dc source is higher.That is to say that under the situation of using alternating current, peak value is up to the subduplicate twice of virtual value, and under the galvanic situation of use, peak value and virtual value are equal to each other.In a word, can guarantee at DC voltage to be that 42V (quite alternating voltage 30V) Shi Buhui gets angry like this, in addition, direct current generator is as fan electromotor 7, and it is by indoor control circuit 10 controls.Compare with alternating current generator, even under the situation of voltage decline, torque deficiency, direct current generator does not shut down, and remains controlled.
Fig. 3 is the circuit diagram of the example of modulation and demodulation circuit 17-a among Fig. 1 of expression and 17-b, and wherein 20-a and 20-b represent transformer, and 21-a and 21-b represent capacitor, and 22--a and 22-b represent inductor, 23-a1,23-a2,23-a3,23-b1,23-b2,23-b3 represents winding.Identical label represent with Fig. 1 in corresponding those parts, and the description that omit to repeat.
In Fig. 3, the modulation-demodulation circuit 17-a of indoor unit 13 by transformer 20-a, blocking capacitor 21-a and the inductor 22-a of the impedance that is used for raising form.Connection line 19 between indoor control circuit 10 and the DC power supply circuit 12 is made up of two sections electric wire 19-a and 19-b, and the lead-in wire of the winding 23-a1 in the transformer 20-a is directly connected on the electric wire 19-b, and another root lead-in wire is connected on the electric wire 19-a by capacitor 21-a.In addition, the winding 23-a2 of transformer 20-a is connected to the transmission ends of indoor control circuit 10, and the winding 23-a3 of transformer 20-a is connected to the receiving terminal of indoor control circuit 10.And, between the contact of capacitor 21-a, electric wire 19-a and indoor control circuit 10, be provided with inductor 22-a along electric wire 19-a.
Similarly, the modulation-demodulation circuit 17-b of outdoor unit 14 sidepieces by transformer 20-b, blocking capacitor 21-b and the inductor 22-b of the impedance that is used for raising form.The lead-in wire of winding 23-b1 in the transformer 20-b is directly connected to electric wire 19-b, and another root lead-in wire is connected on the electric wire 19-a by capacitor 21-b.In addition, the winding 23-b2 of transformer 20-b is connected to the transmission ends of outdoor control circuit 11, and the winding 23-b3 of transformer 20-b is connected to the receiving terminal of outdoor control circuit 11.And, between the contact of capacitor 21-b, electric wire 19-a and DC power supply circuit 12, be provided with inductor 22-b along electric wire 19-a.
Secondly, the operation of this example is described with reference to Fig. 4 A to 4C of each parts signal in the presentation graphs 3.
As mentioned above, the DC voltage that produces in DC power supply circuit 12 offers indoor control circuit 10 by electric wire 19-a and 19-b.At this moment, can avoid this DC voltage is offered transformer 20-b by means of capacitor 21-b, and can avoid this DC voltage is offered transformer 20-a by means of capacitor 21-a.Therefore, this DC voltage only offers indoor control circuit 10.
Now, when transmission signal shown in Fig. 4 A that the transmission ends of indoor control circuit 10 produces, this transmission signal offers electric wire 19-a and 20-b by winding 23-a2 and the 23-a1 of transformer 20-a, and after the modulation of DC voltage being carried out shown in Fig. 4 B, this transmission signal is transferred to transformer 20-b.At this moment, utilize the high impedance of inductor 22-a, can avoid this transmission signal is passed to indoor control circuit 10 with DC voltage.In transformer 20-b, utilize capacitor 21-b from DC voltage, to tell the transmission signal, and the receiving terminal of controlling circuit 11 outward by winding 23-b1 and the 23-b3 receiving chamber of transformer 20-b receive this transmission signal with the modulation of the transmission signal shown in Fig. 4 C.In addition, utilize the high impedance of inductor 22-b can avoid transmitting signal and be transferred to DC circuit 12.
Similarly, from the transmission signal of the transmission ends of outdoor control circuit 11 output winding 23-b2 and the winding 23-a1 of 23b1, electric wire 19-a and 19b and transformer 20-a and the receiving terminal that 23-a3 is sent to indoor control circuit 10 by transformer 20-b.In this case, also can avoid transmitting signal and be sent to DC voltage and offer indoor control circuit 10, and, can further avoid this transmission signal to be provided for DC power supply circuit 12 by means of inductor 22-a and 22-b.Therefore, the DC voltage of DC power supply circuit 12 can be offered indoor control circuit 10, and between indoor control circuit 10 and outdoor control circuit 11, set up the signal transmission by connection line 19.
Because present embodiment constitutes by the mode of above describing, so it has advantage hereinafter described.
In the air-conditioner of present embodiment,, be installed in indoor room air conditioner and used socket, so just new electric wire needn't be installed because indoor unit receives electric energy from the commercial energy.In addition, because indoor unit is by the low-voltage dc power supply operation, so just need not use the high voltage component of large volume and the steel plate guard shield of the harm of heat that is used to protect indoor unit to exempt from generation and spark.Therefore, can make the less indoor electric parts of volume, these parts can be guaranteed not take place heat and produce spark.In addition, outdoor unit can obtain the effect similar to indoor unit certainly when the fan electromotor of outdoor unit or like are driven by low-voltage dc power supply.
Another key character of present embodiment is: the used dc source of indoor unit is to be provided by the DC power supply circuit that is located at outdoor unit.As mentioned above, owing in indoor unit, DC power supply circuit needn't be set, so can save a part of space.Various functions such as humidification, dehumidifying and deodorizing can be set up in this part unappropriated space in the indoor unit in needs.Perhaps this part unappropriated space also can be used for increasing the free degree of design.In addition, utilize the unappropriated space of part also can do the volume of indoor unit less.Perhaps, utilize this part unappropriated space, the heat exchanger and the blower fan of large volume also can be set in indoor unit, to improve the cooling or the efficiency of heating surface.
Next with reference to Fig. 5, Fig. 6 A and Fig. 6 B an alternative embodiment of the invention is described.
Fig. 5 is the block diagram of a structure example of expression detachable air conditioner of the present invention, and Fig. 6 A and 6B are the flow charts of representing two examples of fault diagnosis among this embodiment respectively.
Structurally difference is between the air-conditioner shown in air-conditioner shown in Fig. 5 and Fig. 2: be provided with display circuit 20 among Fig. 5, and be provided with the fault diagnosis functions element of not expressing in the drawings in indoor control circuit 10 and outdoor control circuit 11.
In Fig. 5, when the information of carrying out between indoor control circuit and the outdoor control circuit is transmitted, if received signal is interrupted in the official hour cycle (this time cycle is difference with the difference of information transmission content), or prolong, or be in abnormal time of contact (transmitting when wrong) as generation information, then answer any abnormal situation in the determination information transfer circuit, the running and the display circuit that stop air-conditioner also demonstrate these faults.
Fault diagnosis is hereinafter described with reference to the accompanying drawings.The improper property that the main finger information of fault in the present embodiment is transmitted.Two kinds of situations are arranged, and a kind of is that the information transmission is interrupted, and another kind is that the information transmission makes a mistake, and both of these case can be understood according to the improper property of information transmission.
Fig. 6 A is the Troubleshooting Flowchart whether transmission of expression diagnostic message is interrupted.Transmission and the reception mutually of indoor control circuit 10 and outdoor control circuit 11.In the embodiment shown in fig. 5, outdoor control circuit 11 first actuate message transmission are transferred to indoor unit (step 40) with signal from outdoor unit then, to judge that indoor unit is whether to signal react (step 42).When reactionless, whether judge even after (step 44) past in preset time cycle, still react.Then, when in addition after the preset time period expires, when reactionless, suppose that improper property (step 46) takes place in the information transmission, then the information of carrying out is transmitted the processing of improper property.When responding in step 42, or the step 44 of predetermined time cycle before in the past be when receiving reaction, and step is transferred to and nextly handled 48.Step 44 is done judgement on the basis of the number of transmissions, rather than does judgement on the basis of unresponsive time cycle.
Fig. 6 B represents the wrong Troubleshooting Flowchart of whether generation information transmission.After indoor unit and outdoor unit receive signal (step 50), should judge that the signal that receives is correct signal (being prearranged signals) or rub-out signal (being non-prearranged signals) (step 52), and when judging when having received misdata (non-prearranged signals), should judge further whether the preset time cycle pass by (step 54).Then,, should judge that information has taken place transmits improper property, and the beginning log-on message is transmitted improper property processing (step 56) when preset time cycle past tense.When received signal is correct or before another signal was pass by in the preset time cycle step is transferred to next processing (step 58).Can adopt the whole bag of tricks decision signal whether correct.For example, judge whether start bit, position of rest, lead-in wire etc. show uniform waveform, whether odd even is consistent or the like.Judgement is in this case also carried out according to the time cycle, or carries out according to the number of transmissions when error in data.
Information shown in Fig. 6 A and the 6B is transmitted improper property processing 46 and 56 and is comprised as the operation termination of handling air-conditioner, dc source to the connection of the display circuit 20 as shown in indoor unit power failure (seeing embodiment shown in Figure 7) and/or Fig. 5 etc.
Because the fault in the present embodiment is to be revealed in the improper time of information transfer circuit, thus can be in short cycle processing such as place under repair.
7 an alternative embodiment of the invention is described with reference to the accompanying drawings.
In the block diagram of Fig. 7, demonstrate a kind of structure of detachable air conditioner of the present invention, except the structure shown in Fig. 5, also interrupt circuit 21 is connected the output that is located at the DC power supply circuit 12 in the outdoor unit 14.In the present embodiment, the display circuit 20 shown in Fig. 5 can certainly be set.
In the present embodiment, when improper phenomenon appearred in the information transfer circuit of determining, air-conditioner was shut down and also is interrupted for the indoor dc source of power supply that provides.The interruption that relay that utilization is connected in series with connection line or semiconductor switch can be finished interrupt circuit 21.
Utilize and Fig. 5 similar methods, can detect the improper property of information transfer circuit completely.
Present embodiment has following advantage: owing to stop when improper property takes place to the indoor unit power supply, so can protect indoor unit to avoid the harm of its fault.
With reference to Fig. 8 another embodiment of the present invention is described below.
Demonstrate a kind of detachable air conditioner of the present invention in the block diagram of Fig. 8, diode 22 is connected in parallel by polarity shown in the figure and indoor control circuit 10, and this indoor control circuit 10 is the loads between connection line 19-a and the 19b.The correct polarity of the output voltage of DC power supply circuit 12 is: that side at connection line 19-a is anodal, is negative pole in that side of connection line 19-b.When connection line was correctly connected, diode 22 was applied in backward voltage, and did not have electric current to pass through this diode, thereby to almost not influence of dc voltage circuit 12.When connection line during by incorrect link, diode 22 is applied in forward voltage.The overcurrent holding circuit that so just has overload current to be applied on the DC power supply circuit 12 and in the DC power supply circuit 12 is started working, and stopping power supply, thereby protects indoor control circuit 10.In addition, when not comprising current foldback circuit in the DC power supply circuit 12, connect a current fuse 23 by mode shown in Figure 9, when incorrect link, this current fusing 23 is blown by overload current, thereby protects indoor control circuit 10.
In the air-conditioner of present embodiment,, can not cause the voltage of dc source to descend and loss because this holding circuit can prevent that indoor control circuit is destroyed when the connection line misconnection.Therefore can reduce the electric capacity of DC power supply circuit, also reduce the temperature rise of indoor control circuit simultaneously.
10 another embodiment of the present invention is described below with reference to accompanying drawings.In the block diagram of the Figure 10 that has shown present embodiment detachable air conditioner structure, give outdoor unit 14 from the power supply of commercial energy and by power switch 101 and connection line 18 with power delivery by indoor unit 13 receptions.Power switch 101 is power switches of whole air-conditioner, and when not using situations such as air-conditioner over a long time, this switch should cut out.
The structure of indoor control circuit is the center with indoor control microcomputer 102.Indoor control microcomputer 102 detects room temperature by thermosensitive circuit 103.In addition, the user can utilize Digiplex 104 to come design temperature, operational mode and wind speed etc., and launches these parameters.This signal is received and is input in the indoor control microcomputer 102 by wireless receiving circuit 105.Indoor control microcomputer 102 carries out calculating and sending according to the difference between room temperature and the design temperature and goes out opening-close signal, speed index signal or similar signal and exporting these signals of compressor 1.
The commercial energy of supplying with outdoor unit 14 by connection line 18 is applied to power circuit 202 and (PCC) power 203, fan electromotor 8, power circuit 12 and electromagnetic contactor 201 by back valve 5.Electromagnetic contactor 201 is located at the position of ON when compressor 1 running, thereby when the compressor shutdown power interruptions, it is located at the position of OFF.202 pairs of source power supplies of power circuit carry out rectification and correction, so that produce high-voltage dc voltage.Power supply module 203 is connected and it is outputed to the motor 2 that is used for the drive compression machine.
The position of magnetic pole of rotor is to utilize the position of testing circuit 205 to detect, and is calculated by outdoor control microcomputer 204, thereby produces a signal that is used to connect power supply module.Drive circuit 206 amplifies the signal of outdoor control microcomputer 204 outputs and the driving power assembly.In addition, the electric current that current control circuit 207 detects in power circuit 202, the power supply module etc., the electric current with in the control motor 2 its objective is to prevent that overcurrent is applied on the power supply module 203.
Back valve drive circuit 208 and fan electromotor drive circuit 209 drive back valve 5 and fan electromotor 8 according to the instruction of outdoor control microcomputer 204.
The temperature of the temperature of thermosensitive circuit 210 sensing chamber's outer heat-exchangers 4, outside air temperature, compressor 1 etc., and the revolution of control compressor 1.
Transmit when improper and stop or showing under the situation of fault that display circuit 211 demonstrates duty and stops factor in information.
Commercial energy is provided for DC power supply circuit 12.In DC power supply circuit 12, form the low-tension current power supply of supplying with indoor unit.Voltage can be formed by DC power supply circuit 12 in outdoor control circuit 11, or the power circuit branch is arranged.
The DC voltage that forms in the DC power supply circuit 12 is by 19 offering indoor unit 13 in the connecting line.Indoor control circuit power supply 109 forms the voltage that is used in indoor control circuit 10, the DC voltage that this voltage provides from outdoor unit 14.
Indoor fan motor drive circuit 110 is formed for the voltage of fan motor 7, the DC voltage that this voltage provides from outdoor unit 14.Because fan electromotor 7 adopts dc brushless motors, control air capacity so can utilize according to the method for the instruction control driving voltage of indoor control microcomputer 102.In addition, when excessive electric current was applied on the fan electromotor 7, signal passed to indoor control microcomputer 102, so that fan electromotor 7 stalls.
Information transmission between indoor control microcomputer 102 and the outdoor control microcomputer 204 realizes by modulation-demodulation circuit 17-a and 17-b and connection line 19.Modulation-demodulation circuit 17-a is connected on the connection line 19, and according to from the transmission information of indoor control microcomputer 102 outputs the DC voltage of connection line being carried out high frequency modulated.Modulation-demodulation circuit 17-b detects the high-frequency information in the DC voltage of connection line 19, and this signal is flowed to outdoor control microcomputer 204.So just realized from of the information transmission of outdoor control microcomputer 204 to indoor control microcomputer.Owing to utilize above-mentioned information transmitting methods can not carry out the bidirectional information transmission simultaneously, so the information transmission is carried out from a side to the opposing party or conversely.The information content transmitted is the instruction of driving-closing signal, rotation frequency signal and fan electromotor 8 of compressor 1 etc.In addition, also transmit information such as the factor that stops as outside air temperature and outdoor unit.Utilization becomes predetermined unit (being 8 in an embodiment) with above-mentioned data decomposition.Each 8 bit data all comprises a start bit and a stop bits, and comprises whole lead-in wire.The information transmission is to carry out continuously mutually, but interrupts and during an above-mentioned load correctly etc., can determine that improper property appears in the information transmission when the information transmission.
With reference to Figure 11 to 15 an alternative embodiment of the invention is described below.
Modulation-demodulation circuit is modulated the carrier wave that its frequency is higher than the frequency of the transmission signal that is sent by oscillating circuit, this transmission signal is from indoor control circuit or from the output of outdoor control circuit, and the carrier wave that will be used to provide the modulation on the connection line of dc source electric power is from the DC power supply circuit of the outdoor unit indoor control circuit that is added to.
Therefore, even can not be connected, will never reduce so offer the electric power of indoor unit owing to dc source when signal transmits neither can be interrupted also.
The air-conditioner of present embodiment hereinafter will be described.Figure 11 is total block diagram of present embodiment.17-a and 17-b represent modulation-demodulation circuit, and 17-a ' and 17-b ' represent oscillating circuit.Because the square frame of other square frame and previous embodiment is similar, so omitted description of them.
Hereinafter will describe in the present embodiment by indoor unit 13 and receive power supplys and offer the situation of outdoor unit 14 by connection line 18 from the commercial energy 9.DC power supply circuit 12 forms the low-voltage dc power supply from commercial energy 9, and electric power is offered the indoor control circuit 10 of indoor unit 13 by connection line 19.10 pairs of whole air-conditioners of indoor control circuit are controlled, as the control out of service of compressor 1 and control of fan electromotor 7 or the like.Outdoor control circuit 11 is according to the instruction control outdoor unit 14 of indoor control circuit 10.Between indoor control circuit 10 and outdoor control circuit 11, carry out the information transmission by the modulation-demodulation circuit 17-a that is contained in the indoor unit side and the modulation-demodulation circuit 17-b that is contained in the outdoor unit side and connection line 19.Utilization is carried out the information transmission between indoor control circuit 10 and outdoor control circuit 11, method on the connection line 19 that is used to provide dc source electric power simultaneously is added to modulated carrier wave, can reduce connection line quantity, receive the electric energy of commercial energies and make the quantity of connection line equal quantity in the past by indoor unit 13, even to be used for when indoor unit 13 is sent to the connection line of outdoor unit 14 also be like this providing.
The working condition of modulation-demodulation circuit 17-a and 17-b is described with reference to Figure 12 below.Indoor control circuit 10 and outdoor control circuit 11 all are respectively equipped with transmission terminal and receiving terminal, and they are by being connected on modem section 67-a and the 67-b shown in the figure.Inductor 22 is used for indoor control circuit 10 and DC power supply circuit 12 and connection line 19 are separated, and capacitor 21 is used for the capacitor that the modem section 67 with connection line 19 and single flow separates.The information transmission is carried out to outdoor control circuit 11 directions from indoor control circuit 10, or carries out with opposite direction, but operation principle is identical.Therefore, hereinafter will describe the information of carrying out to the direction of outdoor control circuit 11 from indoor control circuit 10 passes.The modem section 67-a of transmission signal as shown in FIG. 13A in from the transmission terminal of indoor control circuit 10 to modulation-demodulation circuit 17-a.Modem section 67-a modulates the carrier wave shown in Figure 13 B that produces among the oscillating circuit 14-a with the transmission signal, and is connected to connection line 19 by capacitor 21-a, and the signal as shown in Figure 13 C is superimposed upon on this DC voltage.And receiving a side, and the signal on the DC voltage that is added to, the modem section 67-b that is input to modulation-demodulation circuit 17-b by capacitor 21-b is also modulated, in the receiving terminal place of outdoor control circuit 11 input received signal.In such a way, the information transmission between indoor control circuit 10 and the outdoor control circuit 11 can be undertaken by the connection line 19 that is used to transmit dc source electric power.
And then describe the working method of modem section 67 and oscillating circuit 17 in detail with reference to accompanying drawing.The working method of modulation circuit is at first described.
Figure 14 shows the detailed structure of modulating part.In Figure 14, COM2 representative voltage comparator, the oscillating circuit of carrier wave is made up of resistance R 16-R20 and capacitor C 06.The output signal of utilizing transistor Q3 and Q4 that circuit is swung in vibration is amplified, and just output is connected on the connection line 19 by electric capacity 21, and this output signal is added on the dc source.As a system, adopted the two ends of capacitor C 06 short circuit that utilizes illustrated transmission signal and utilize oscillating circuit to produce the system of the promotion transistor Q2 that vibration modulates off and on here with transmission signal modulated carrier.That is to say, this be one utilize the transmission signal therein intermittently real estate give birth to vibration and be added to system on the dc source of signal.The working method of demodulator circuit will be described below.Figure 15 shows the detailed structure of demodulator circuit.The signal that is added on the dc source is imported into the voltage comparator COM1 that has direct current component, and this direct current component shifts out from connection line 19 by electric capacity 21.Voltage comparator COM1 relatively input voltage is higher than or is lower than the reference voltage of being determined by resistance R 05 and R06, and the output comparative result.When not having carrier wave to be added on the dc source, the value of being output in of voltage comparator is 0, and during having carrier wave to be added on the dc source, has the output of the voltage output voltage comparator of carrier frequency.Output voltage is by diode D01 rectification, thereby can promote transistor Q1 and export a received signal.The signal that can superpose on dc source is so that by realizing that above-mentioned modulation and demodulation carry out the signal transmission.
A variation example of present embodiment will be described below.When the outdoor unit 14 in passing through Figure 11 receives from the electric energy of commercial energy 9, it is unnecessary that connection line 18 in the connection line between one or more indoor units 13 and outdoor unit becomes, and the information transmission between indoor unit power supply and indoor control circuit 10 and outdoor control circuit 11 has only the connection line 19 by being used to transmit dc source electric power just may carry out, and only uses two connection lines just enough.Therefore, another embodiment of the present invention has only uses two connection lines with regard to enough characteristics in the indoor and outdoors split-type air conditioner, and wherein electric energy is received from the commercial energy by outdoor unit.
According to present embodiment, do not reduce owing to deliver to the electric power of indoor unit, so can make the less DC power supply circuit that is located at outdoor unit of size.In addition, do not reduce, so can avoid the air capacity of fan electromotor to reduce owing to deliver to the electric power of indoor unit.
Because the present invention has said structure, so can obtain advantage as described below.
Since be by the electric power of indoor unit reception from commercial energy, thus original socket (outlet) of the room air conditioner that is located at the indoor can be used, and new electric wire need not be installed.In addition, owing to indoor unit moves on low-voltage dc power supply, so need not use the high voltage component of large volume and be used to protect the heat of generation and the steel plate outer cover of spark.Therefore, the less indoor electric electric component of size can be made, and the heat that produces and the harm of spark can be guaranteed not to be subjected to.Remove this this, when the fan electromotor of outdoor unit etc. is driven by low-voltage dc power supply, also can obtain the effect identical certainly with indoor unit.
In addition, DC power supply circuit is not set in the needs utilization at indoor unit and can sets up various functions at indoor unit during the space vacateed, as humidification, cooling and deodorizing etc.Perhaps, also can utilize this space to improve the free degree of design.And, utilize this part space to can be made into the less indoor unit of size.Perhaps, bigger heat exchanger and the blower fan of volume that utilizes this part space also to can be made into to be located at indoor unit, thus improve the cooling or the efficiency of heating surface.
Claims (10)
1. air-conditioner is characterized in that comprising:
Outdoor unit with the motor of the compressor that is used for the drive compression cold-producing medium, a fan electromotor and an outdoor control circuit;
Indoor unit with indoor control circuit and fan electromotor;
First group of connection line that indoor unit and outdoor unit are interconnected with one another;
Second group of connection line that indoor unit and outdoor unit are interconnected with one another;
Described indoor unit also comprises the device that receives electric energy from the commercial energy, and the described electric energy that receives from the commercial energy is sent to described outdoor unit by described second group of connection line;
Described outdoor unit comprises that also at least one is used for described commercial energy is converted to the dc source of predetermined voltage, and the electric energy of the described dc source of at least a portion is sent to described outdoor unit by described first group of connection line;
At the described indoor control circuit of described indoor unit and the structure of fan electromotor it is worked on described dc source.
2. according to the air-conditioner of claim 1, it is characterized in that also being included in information between described outdoor unit and the described indoor unit and transmit and be used for the device that detection information is transmitted improper property when undesired.
3. according to the air-conditioner of claim 1, it is characterized in that also comprising being used to respond the device that described checkout gear stops the described operation of described air-conditioner.
4. according to the air-conditioner of claim 1, it is characterized in that also comprising that being used for responding described checkout gear carries out fault and show and stop from dc source to described indoor unit at least a of these two kinds of functions of powering.
5. according to the air-conditioner of claim 1, when it is characterized in that also being included in first group of connection line and wrong polarity being connected, prevent to comprise the ruined protective device of relevant circuit of described indoor unit.
6. according to the air-conditioner of claim 1, it is characterized in that described protective device comprises that one is connected described first group of connection line and is located at diode between the current foldback circuit in the described DC power supply circuit.
7. according to claim 1 air-conditioner, it is characterized in that described protective device comprises a diode that is connected between described first group of connection line and the fuse, connect for one in described fuse and the described first group of connection line.
8. according to the air-conditioner of claim 1, it is characterized in that described dc source is 42 volts or is lower than 42 volts.
9. according to the air-conditioner of claim 1, it is characterized in that described indoor unit and outdoor unit have the modulation-demodulation circuit that links to each other with described first connection line respectively, and realize information transmission between described indoor unit and the outdoor unit by described modulation-demodulation circuit.
10. according to the air-conditioner of claim 1, it is characterized in that handling by described dc source at the electric component of described outdoor unit.
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12569693 | 1993-05-27 | ||
| JP125696/93 | 1993-05-27 | ||
| JP13471393 | 1993-06-04 | ||
| JP134713/93 | 1993-06-04 | ||
| JP21548793 | 1993-08-31 | ||
| JP215487/93 | 1993-08-31 | ||
| JP223072/93 | 1993-09-08 | ||
| JP22307293 | 1993-09-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1101116A CN1101116A (en) | 1995-04-05 |
| CN1083089C true CN1083089C (en) | 2002-04-17 |
Family
ID=27471134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94108102 Expired - Fee Related CN1083089C (en) | 1993-05-27 | 1994-05-27 | Air conditioner |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN1083089C (en) |
| MY (1) | MY111650A (en) |
| TW (1) | TW311687U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252374A (en) * | 2011-06-30 | 2011-11-23 | 吴尚 | Air conditioner and air-conditioning system |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105448074B (en) * | 2014-08-14 | 2019-02-26 | 苏州三星电子有限公司 | Idle call one way communications devices and its communication means |
| CN104776504A (en) * | 2015-04-19 | 2015-07-15 | 北京德能恒信科技有限公司 | Three-piece type machine room energy-saving air conditioning system |
| CN106352477A (en) * | 2016-08-24 | 2017-01-25 | 珠海格力电器股份有限公司 | Communication method and device of air conditioner and air conditioner |
| CN106871471A (en) * | 2017-04-05 | 2017-06-20 | 深圳沃海森科技有限公司 | The refrigerated air-conditioning system of low-pressure direct streaming double electronic expansion-valve |
| CN107493119B (en) * | 2017-08-31 | 2021-04-02 | 鲁东大学 | VPPM-based direct-current bus carrier communication system utilizing power supply ripples |
| CN108426353A (en) * | 2018-04-18 | 2018-08-21 | 华科电工工程股份有限公司 | Mobile base station Automatic indoor temperature control system |
| CN110901337B (en) * | 2019-11-28 | 2023-05-09 | 深圳市汇川技术股份有限公司 | Two-in-one drive protection method, system, device and storage medium |
| CN116417983A (en) * | 2022-01-05 | 2023-07-11 | 佛山市顺德区美的电子科技有限公司 | Air conditioning system, control method, operation control device and storage medium |
-
1994
- 1994-05-20 MY MYPI94001297A patent/MY111650A/en unknown
- 1994-05-20 TW TW084204897U patent/TW311687U/en unknown
- 1994-05-27 CN CN 94108102 patent/CN1083089C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252374A (en) * | 2011-06-30 | 2011-11-23 | 吴尚 | Air conditioner and air-conditioning system |
Also Published As
| Publication number | Publication date |
|---|---|
| TW311687U (en) | 1997-07-21 |
| CN1101116A (en) | 1995-04-05 |
| MY111650A (en) | 2000-10-31 |
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