CN208419110U - A kind of communicating circuit and air conditioner of multi-split air conditioner - Google Patents
A kind of communicating circuit and air conditioner of multi-split air conditioner Download PDFInfo
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- CN208419110U CN208419110U CN201820559690.8U CN201820559690U CN208419110U CN 208419110 U CN208419110 U CN 208419110U CN 201820559690 U CN201820559690 U CN 201820559690U CN 208419110 U CN208419110 U CN 208419110U
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Abstract
The utility model provides a kind of communicating circuit of multi-split air conditioner, including the communicating circuit unit between indoor unit control unit, outdoor unit control unit and the connection indoor unit control unit and the outdoor unit control unit；The communicating circuit unit includes a multidiameter option switch control module, the port of the multidiameter option switch control module includes input multiplexer and output channel D all the way, the input multiplexer has corresponding relationship, and at least four tunnels from different indoor units；The input multiplexer is towards the indoor unit control unit, and the output channel D is towards the outdoor unit control unit.The communicating circuit of multi-split air conditioner provided by the utility model is reduced the use of main control chip CPU pin resource, printed circuit board space is greatly optimized, reduces costs by increasing multidiameter option switch control module using output channel all the way.
Description
Technical field
The utility model relates to field of air conditioning more particularly to a kind of communicating circuits of multi-split air conditioner.
Background technique
With the development of air-conditioning system, nowadays an outdoor can be shared using multiple indoor units in an air-conditioning system
Machine.One indoor unit and outdoor unit carry out communication and need one group of zero firewire communicating circuit, while it is logical to occupy one group of main control chip CPU
Interrogate pin resource, i.e., one transmission mouth and a receiving port.Under conventional situation, when air-conditioning system is there are when N number of indoor machine,
Outdoor unit control unit needs zero firewire communicating circuit of N group, that is, needs N group main control chip CPU to communicate pin resource, including N number of
Send mouth and N number of receiving port, total 2N port, the shortcomings that increase there are the main control chip CPU pin wasting of resources and circuit cost.
Utility model content
In view of this, the utility model is directed to a kind of communicating circuit of multi-split air conditioner, to reduce master control core
Piece CPU pin uses and reduces circuit cost.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of communicating circuit of multi-split air conditioner, including indoor unit control unit, outdoor unit control unit and connection
Communicating circuit unit between the indoor unit control unit and the outdoor unit control unit；The indoor unit control unit
Including multiple control modules, the corresponding indoor unit of each control module；
The communicating circuit unit includes a multidiameter option switch control module, the multidiameter option switch control module
Port includes input multiplexer S and output channel D, every input channel all the way of the input multiplexer S correspond to one all the way
Platform indoor unit, and at least four tunnels；
The input multiplexer S is connect with the indoor unit control unit.
Further, the multidiameter option switch control module further includes multiple channel selecting port A, described for gating
Input multiplexer S, the channel selecting port A at least two；
The channel selecting port A connects the CPU mouth of outdoor unit control unit, and described CPU mouthfuls to each channel selecting port A
High level or low level input are carried out, corresponds to a kind of multiplexer channel selection port A all the way in the input multiplexer S
Level logic combination, by the multiplexer channel select A input various combination low and high level it is described defeated to control
Enter the gating of channel S.
Further, the communicating circuit unit further includes isolation circuit, and the isolation circuit is connected to the indoor unit
Between control unit and the outdoor unit control unit.
Further, the isolation circuit includes optical coupling isolation circuit PC1 and PC2, and each optical coupling isolation circuit includes
The transistor emitter pin of one diode and triode, the optical coupling isolation circuit PC1 connects the optical coupling isolation circuit
The diode anode pin of PC2.
Further, the control of the diode cathode pin connection outdoor unit control unit of the optical coupling isolation circuit PC1
The communication of device MCU sends mouth TXD；
The communicating circuit further includes resistance R2, the diode of the one end the resistance R2 and the optical coupling isolation circuit PC1
Anode connection, the other end are connect with DC power supply.
Further, the diode cathode pin of the optical coupling isolation circuit PC2 connects mains AC zero curve AC-N, institute
State the transistor collector pin connection DC power supply of optical coupling isolation circuit PC2.
Further, the communicating circuit further includes a filter circuit, and the filter circuit includes resistance R3, capacitor C1,
One end of the resistance R3 is connect with the transistor emitter pin of the optical coupling isolation circuit PC2, and the resistance R3's is another
End is connect with one end of the capacitor C1, and the other end of the capacitor C1 is connect with DC power supply with reference to ground GND, the resistance R3
The one end being connected with the capacitor C1 is connect with the communication receiving port RXD of outdoor unit control unit.
Further, the communicating circuit further includes resistance R4, and the resistance R4 is connected in parallel on the resistance R3 and the electricity
Hold the both ends of the circuit of C1 composition；The communicating circuit unit includes resistance R1, diode D1, one end of the resistance R1 with
The connection of the port the output channel D, the anode of the diode D1 are connect with the other side of the resistance R2, the light-coupled isolation
The transistor collector pin of circuit PC1 connects the negative electrode pin of the diode D1.
Further, the input multiplexer S is at least four tunnels, and the multiple channel selecting port A is two.
Compared with the existing technology, the communicating circuit of multi-split air conditioner described in the utility model has the advantage that
(1) by increasing multidiameter option switch control module between indoor machine control unit and outdoor unit control unit,
The communication between indoor unit and outdoor unit is realized, while using output channel all the way, it is different from traditional two-way, reduce master control
The use of chip CPU pin resource, reduces the cost of chip circuit, printed circuit board space is greatly optimized, and reduces printing
The space of circuit board；
(2) signal is transmitted using optical coupling isolator, the conversion of electrical-optical-electrical is carried out to signal, the anti-of improve data transfer is done
Immunity energy, while forceful electric power isolation is carried out, reduce influence of the forceful electric power to the multidiameter option switch control module；
(3) the diode sun of optical coupling isolation circuit PC2 is connected by the transistor emitter pin of optical coupling isolation circuit PC1
Pole pin connects, and realizes the electric signal exchange between two optocouplers；
(4) increase resistance R3, capacitor C1 is connected between optical coupling isolator and outdoor unit communication receiving port, realization low pass filtered
Wave；By increasing resistance R4, current limliting decompression is realized；
(5) increase resistance R1, diode D1 are connected between output channel D and optical coupling isolator, to the communicating circuit
It carries out current limliting and prevents electric current reversed.
The another object of the utility model is to propose a kind of air conditioner, the air conditioner include described above one drag it is more
The communicating circuit of air conditioner.
Possessed advantage is identical compared with the existing technology with the communicating circuit of the multi-split air conditioner for the air conditioner,
Details are not described herein.
Detailed description of the invention
Fig. 1 is the utility model communicating circuit schematic diagram.
Description of symbols: #
1- indoor unit control unit, 2- outdoor unit control unit, 3- isolation circuit, 4- filter circuit.
Specific embodiment
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
Embodiment one
The utility model provides a kind of communicating circuit of multi-split air conditioner, the communicating circuit packet of the multi-split air conditioner
It includes indoor unit control unit 1, outdoor unit control unit 2 and connects the indoor unit control unit 1 and outdoor unit control
Communicating circuit unit between unit 2；The indoor unit control unit 1 includes multiple control modules, each control module pair
Ying Yitai indoor unit；
The communicating circuit unit includes a multidiameter option switch control module, the multidiameter option switch control module
Port includes input multiplexer S and output channel D, every input channel all the way correspond to an indoor unit, and at least four all the way
Road；The communicating circuit unit only all the way output channel D, therefore the inflow and outflow of signal all uses the output channel
D, therefore the communicating circuit is half duplex communication, cannot be received and dispatched simultaneously；
The input multiplexer S is connect with the indoor unit control unit 1, wherein one corresponding per input channel all the way
The communications exchange signal of indoor unit carries out between the multidiameter option switch control module and the indoor unit control unit 1
The transmitting of communications exchange signal TR；The output channel D carries out the multidiameter option switch control module and the outdoor unit control
Communication signal transmitting between unit 2 processed；Using output channel all the way, so that circuit structure is greatly optimized, main control chip CPU is reduced
The use of pin resource reduces the space of printed circuit board, and printed circuit board space is greatly optimized, reduce circuit at
This；
The port of the multidiameter option switch control module further includes multiple channel selecting port A, the multiple channel choosing
Select port A at least two, for gating the input multiplexer S, control in the input multiplexer S all the way with institute
The connection between output channel D is stated, the CPU mouth that the channel selecting port A connects outdoor unit control unit 2 is controlled, described
CPU mouthfuls carry out high level or low level input to the multiple channel selecting port A, corresponding a kind of logical per input channel all the way
The level logic of road selection port A combines；
When being communicated between indoor unit and outdoor unit, need to select control module to carry out the variable connector
Gating controls the indoor unit control by controlling input of the outer side controller CPU to channel selecting port a-signal
Connection between the corresponding S of the input channel all the way and output channel D of unit 1 processed.
Embodiment two
The communicating circuit of multi-split air conditioner as described above, the present embodiment is different from place and is, in conjunction with Fig. 1 institute
Show, the communicating circuit unit further includes the isolation circuit 3 being made of optical coupling isolation circuit PC1 and optical coupling isolation circuit PC2, institute
It states isolation circuit 3 to be connected between the indoor unit control unit 1 and the outdoor unit control unit 2, signal can be carried out
The conversion of electrical-optical-electrical, the interference free performance of improve data transfer, while forceful electric power isolation is carried out, it reduces forceful electric power and the multichannel is selected
Select the influence of switch control module.
Embodiment three
The communicating circuit of multi-split air conditioner as described above, the present embodiment is different from place and is, in conjunction with Fig. 1 institute
Show, each optical coupling isolation circuit includes a diode and a triode, the triode hair of the optical coupling isolation circuit PC1
The diode anode pin that emitter-base bandgap grading pin connects the optical coupling isolation circuit PC2 connects, and realizes the electric signal exchange between two optocouplers；
The controller MCU's of the diode cathode pin connection outdoor unit control unit 2 of the optical coupling isolation circuit PC1 is logical
News send mouth TXD；
The diode anode of the optical coupling isolation circuit PC1 is used by resistance R2 connection DC power supply+5V, the resistance R2
In decompression, prevent the diode of the optical coupling isolation circuit PC1 from burning out；
The diode cathode pin of the optical coupling isolation circuit PC2 connects mains AC zero curve AC-N；The optocoupler every
Transistor collector pin from circuit PC2 connects DC power supply+5V.
Example IV
The communicating circuit of multi-split air conditioner as described above, the present embodiment is different from place and is, in conjunction with Fig. 1 institute
Show, the communicating circuit further includes a filter circuit 4, and the filter circuit 4 includes resistance R3, capacitor C1, for the light
The electric signal that the triode emission of coupling isolation circuit PC2 extremely flows out is filtered and current limliting；One end of the resistance R3 and institute
The transistor emitter pin connection of optical coupling isolation circuit PC2 is stated, the other end is connect with one end of the capacitor C1, the capacitor
The other end of C1 and DC power supply are connect with reference to ground GND, the resistance R3 and the one end being connected the capacitor C1 and outdoor unit
The communication receiving port RXD connection of the controller MCU of control unit 2；The resistance R3 and capacitor C1 constitutes low-pass filter,
Filter out noise；
The communicating circuit further includes resistance R4, and the resistance R4 is connected in parallel on what the resistance R3 and capacitor C1 was formed
The two sides of filter circuit 4, one end of the resistance R4 are connected to the triode of the resistance R3 Yu the optical coupling isolation circuit PC2
The connected connecting pin of emitter pin, the other end of the resistance R4 are connected to the capacitor C1 and DC power supply with reference to ground GND
Connected connecting pin is used for current limliting.
Embodiment five
The communicating circuit of multi-split air conditioner as described above, the present embodiment is different from place and is, in conjunction with Fig. 1 institute
Show, when outdoor unit is communicated to indoor unit, the communication sends mouth TXD input electrical signal and drives the optical coupling isolation circuit
The light emitting diode of PC1 issues light, and the triode of the optical coupling isolation circuit PC1 has light sensitive characteristic, exports electric current, makes described
Circuit between indoor unit control unit 1 and the outdoor unit control unit 2 is connected, and the indoor unit control unit 1, which receives, to be come
From the signal of the outdoor unit control unit 2；
When indoor unit is communicated to outdoor unit, the outdoor unit control unit 2 needs to control the communication and sends mouth
TXD drives the diode of the optical coupling isolation circuit PC1, the triode of the optical coupling isolation circuit PC1 is connected, institute
The electric signal for stating indoor unit control unit 1 flows into the optical coupling isolation circuit by the triode of the optical coupling isolation circuit PC1
The diode of PC2 applies voltage to the diode of the optical coupling isolation circuit PC2, drives the two of the optical coupling isolation circuit PC2
Pole tube light-emitting exports electric current to make the triode of the optical coupling isolation circuit PC2 by light conduction, realizes indoor unit to outdoor
The communication of machine；
Outdoor unit is communicated to indoor unit and indoor unit carries out communication to outdoor unit to carry out simultaneously.
Embodiment six
The communicating circuit of multi-split air conditioner as described above, the present embodiment is different from place and is, in conjunction with Fig. 1 institute
Show, the communicating circuit unit includes resistance R1, diode D1, for carrying out current limliting to the communicating circuit；
The side of the resistance R1 is connect with the port the output channel D, the anode and the resistance of the diode D1
The other side of R2 connects, and the cathode that the transistor collector pin of the optical coupling isolation circuit PC1 connects the diode D1 draws
Foot.
Embodiment seven
The communicating circuit of multi-split air conditioner as described above, the present embodiment is different from place and is, in conjunction with Fig. 1 institute
Show, the input multiplexer S is at least four tunnel input channels；In the present embodiment, the input multiplexer S is the input of four tunnels
Channel, i.e., by taking one drags four air conditioners as an example, the input multiplexer S is respectively input channel S1, input channel S2, inputs and lead to
Road S3 and input channel S4 respectively corresponds indoor unit control unit 1 communications exchange signal TR1, TR2, TR3, TR4, transmits institute
Stating multiple channel selecting port A is two, respectively channel selecting port A0 and channel selecting port A1；
Preferably, the level logic group of channel selecting A0, A1 is combined into all when being low, and corresponding input channel S1, channel selecting
The level logic group of A0, A1 be combined into position one low one it is high when, corresponding input channel S2, the level logic combination of channel selecting A0, A1
When being one high and one low, corresponding input channel S3, the level logic group of channel selecting A0, A1 is combined into all when being high, and corresponding input is logical
Road S4, by channel selecting A0, A1 input various combination low and high level come control realize to the input channel S1,
The gating of S2, S3, S4.
Embodiment eight
A kind of air conditioner, the air conditioner include the communicating circuit of multi-split air conditioner described above.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
Art personnel can also make several improvement and supplement under the premise of not departing from the utility model method, these are improved and supplement
Also it should be regarded as the protection scope of the utility model.
Claims (10)
1. a kind of communicating circuit of multi-split air conditioner, which is characterized in that controlled including indoor unit control unit (1), outdoor unit
Unit (2) and the communicating circuit list being connected between the indoor unit control unit (1) and the outdoor unit control unit (2)
Member；The indoor unit control unit (1) includes multiple control modules, the corresponding indoor unit of each control module；
The communicating circuit unit includes a multidiameter option switch control module, the port of the multidiameter option switch control module
A corresponding room per input channel all the way of including input multiplexer S and all the way output channel D, the input multiplexer S
Interior machine；
The input multiplexer S is connect with the indoor unit control unit (1).
2. the communicating circuit of multi-split air conditioner according to claim 1, which is characterized in that the multidiameter option switch control
Molding block further includes multiple channel selecting port A, and for gating the input multiplexer S, the channel selecting port A is at least
It is two；
The channel selecting port A connects the CPU mouth of outdoor unit control unit (2), and described CPU mouthfuls to each channel selecting port A
High level or low level input are carried out, corresponds to a kind of multiplexer channel selection port A all the way in the input multiplexer S
Level logic combination, by the multiplexer channel select A input various combination low and high level it is described defeated to control
Enter the gating of channel S.
3. the communicating circuit of multi-split air conditioner according to claim 1, which is characterized in that the communicating circuit unit is also
Including isolation circuit (3), the isolation circuit (3) is connected to the indoor unit control unit (1) and outdoor unit control is single
Between first (2).
4. the communicating circuit of multi-split air conditioner according to claim 3, which is characterized in that isolation circuit (3) packet
Optical coupling isolation circuit PC1 and PC2 are included, each optical coupling isolation circuit includes a diode and triode, the light-coupled isolation
The transistor emitter pin of circuit PC1 connects the diode anode pin of the optical coupling isolation circuit PC2.
5. the communicating circuit of multi-split air conditioner according to claim 4, which is characterized in that the optical coupling isolation circuit
The communication of the controller MCU of diode cathode pin connection outdoor unit control unit (2) of PC1 sends mouth TXD；
The communicating circuit further includes resistance R2, the diode anode of the one end the resistance R2 and the optical coupling isolation circuit PC1
Connection, the other end are connect with DC power supply.
6. the communicating circuit of multi-split air conditioner according to claim 5, which is characterized in that the optical coupling isolation circuit
The diode cathode pin of PC2 connects mains AC zero curve AC-N, and the transistor collector of the optical coupling isolation circuit PC2 draws
Foot connects DC power supply.
7. the communicating circuit of multi-split air conditioner according to claim 4, which is characterized in that the communicating circuit further includes
One filter circuit (4), the filter circuit (4) include resistance R3, one end of capacitor C1, the resistance R3 and the light-coupled isolation
The transistor emitter pin of circuit PC2 connects, and the other end of the resistance R3 is connect with one end of the capacitor C1, the electricity
The other end for holding C1 is connect with DC power supply with reference to ground GND, one end that the resistance R3 is connected with the capacitor C1 and outdoor
The communication receiving port RXD connection of machine control unit (2).
8. the communicating circuit of multi-split air conditioner according to claim 7, which is characterized in that the communicating circuit further includes
Resistance R4, the resistance R4 are connected in parallel on the both ends of the circuit of the resistance R3 and capacitor C1 composition；The communicating circuit list
Member further include resistance R1, diode D1, the resistance R1 one end connect with the port the output channel D, the diode D1
Anode connect with the other side of the resistance R2, described in the connection of the transistor collector pin of the optical coupling isolation circuit PC1
The negative electrode pin of diode D1.
9. the communicating circuit of multi-split air conditioner according to claim 1, which is characterized in that the input multiplexer S
At least four tunnels, the multiple channel selecting port A are two.
10. a kind of air conditioner, which is characterized in that the air conditioner is dragged with described in the claims 1-9 any one one
The communicating circuit of multi-air-conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820559690.8U CN208419110U (en) | 2018-04-19 | 2018-04-19 | A kind of communicating circuit and air conditioner of multi-split air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820559690.8U CN208419110U (en) | 2018-04-19 | 2018-04-19 | A kind of communicating circuit and air conditioner of multi-split air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN208419110U true CN208419110U (en) | 2019-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820559690.8U Active CN208419110U (en) | 2018-04-19 | 2018-04-19 | A kind of communicating circuit and air conditioner of multi-split air conditioner |
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| CN (1) | CN208419110U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112696742A (en) * | 2021-02-02 | 2021-04-23 | 青岛海信日立空调***有限公司 | Air conditioner |
| CN112947170A (en) * | 2021-02-02 | 2021-06-11 | 珠海拓芯科技有限公司 | Double-fan control circuit and air conditioner |
-
2018
- 2018-04-19 CN CN201820559690.8U patent/CN208419110U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112696742A (en) * | 2021-02-02 | 2021-04-23 | 青岛海信日立空调***有限公司 | Air conditioner |
| CN112947170A (en) * | 2021-02-02 | 2021-06-11 | 珠海拓芯科技有限公司 | Double-fan control circuit and air conditioner |
| CN112947170B (en) * | 2021-02-02 | 2024-04-12 | 宁波奥克斯电气股份有限公司 | Double-fan control circuit and air conditioner |
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