CN114576700A - Air conditioner - Google Patents

Abstract

The present invention provides an air conditioner, comprising: the power line is used for accessing an external power supply; a plurality of indoor units, each having an indoor communication interface; the off-premises station, be provided with in it: the outdoor main control board is provided with an outdoor main control receiving port and a plurality of outdoor main control sending ports; the first side of the outdoor communication isolation receiving element is connected with the outdoor main control receiving port, and the first end of the second side of the outdoor communication isolation receiving element is used for being connected to a power line; the first sides of the outdoor communication isolation transmitting elements are respectively connected with the outdoor master control transmitting ports one by one; the second side first end of each outdoor communication isolated transmitting element is connected to the second side second end of the outdoor communication isolated receiving element; the second side second end of each outdoor communication isolation transmitting element is used for connecting an indoor communication interface. The air conditioner of the invention realizes the sharing of the outdoor communication isolation receiving element, simplifies the circuit structure of the multi-split air conditioner and saves the manufacturing cost.

Description

Air conditioner

Technical Field

The invention relates to an electric appliance, in particular to an air conditioner.

Background

The multi-split air conditioner, also called as "one with multiple air conditioners", refers to that one outdoor unit is connected with two or more indoor units, and can be used for starting one indoor unit independently or starting a plurality of indoor units simultaneously.

Each indoor unit needs to communicate with the outdoor unit to adjust the operation parameters of the indoor units. In the prior art, when an air conditioner utilizes a communication isolation module to realize communication between an indoor unit and an outdoor unit, a plurality of receiving elements and a plurality of transmitting elements are often required to be arranged in the outdoor unit, so that a communication circuit is formed between each indoor unit and the outdoor unit, which results in a very complex circuit structure and high manufacturing cost.

Therefore, how to simplify the circuit structure of the multi-split air conditioner and reduce the cost of the communication isolation module becomes a technical problem to be solved urgently by those skilled in the art.

Disclosure of Invention

It is an object of the present invention to provide an air conditioner that at least partially solves the above problems.

A further object of the present invention is to simplify the circuit structure of the multi-split air conditioner and to achieve the sharing of the outdoor communication isolation receiving element.

It is a further object of the present invention to provide a new communication circuit of a multi-split air conditioner.

Still another object of the present invention is to reduce the operating power consumption of an air conditioner to achieve energy saving.

It is still another object of the present invention to reduce the standby power consumption of the air conditioner and to implement a low power consumption standby function.

Another further object of the present invention is to completely power off the outdoor unit in the standby state, and to realize "instant power on" of the outdoor unit during the switching from the standby state to the operating state.

It is yet a further object of the present invention to enable multiplexing of connection lines.

Another further object of the present invention is to simplify the control process of the air conditioner.

The present invention provides an air conditioner, comprising: the power line is used for accessing an external power supply; a plurality of indoor units, each having an indoor communication interface; the off-premises station, be provided with in it: the outdoor main control board is provided with an outdoor main control receiving port and a plurality of outdoor main control sending ports; the first side of the outdoor communication isolation receiving element is connected with the outdoor main control receiving port, and the first end of the second side of the outdoor communication isolation receiving element is used for being connected to a power line; the first sides of the outdoor communication isolation transmitting elements are respectively connected with the outdoor master control transmitting ports one by one; the second side first end of each outdoor communication isolated transmitting element is connected to the second side second end of the outdoor communication isolated receiving element; the second side second end of each outdoor communication isolation transmitting element is used for connecting an indoor communication interface.

Optionally, each indoor unit includes: the indoor main control board is provided with an indoor main control receiving port and an indoor main control sending port; the first side of the indoor communication isolation receiving element is connected with an indoor main control receiving port; and the first side of the indoor communication isolation transmitting element is connected with the indoor main control transmitting port, and the first end of the second side of the indoor communication isolation transmitting element is connected with the second end of the second side of the indoor communication isolation receiving element and serves as an indoor communication interface.

Optionally, a power signal conditioning module, coupled to the power line and the second side first end of the outdoor communication isolation receiving element, is configured to convert the power signal of the external power source into a communication power signal required by the second side of the indoor communication isolation transmitting element and the second side of the indoor communication isolation receiving element of the plurality of indoor units and the second side of the outdoor communication isolation transmitting element and the second side of the outdoor communication isolation receiving element to provide operating power to the second side of the indoor communication isolation transmitting element and the second side of the indoor communication isolation receiving element of the indoor units and the second side of the outdoor communication isolation transmitting element and the second side of the outdoor communication isolation receiving element of the indoor units.

Optionally, the power signal arrangement module is disposed in the outdoor unit, and includes: the rectifier is used for converting a power supply signal of an external power supply into a direct-current voltage signal required by the second side of the outdoor unit communication isolation module and the second side of the indoor unit communication isolation module; and the voltage regulating component is connected to the rectifier and used for regulating the voltage value of the direct-current voltage signal.

Optionally, the outdoor unit further includes: the outdoor switch power supply is used for supplying power to the outdoor main control panel; an outdoor power line for connecting the power line to an outdoor switching power supply; the outdoor first switching element is connected between the outdoor power line and the outdoor switching power supply and is used for controlling the on-off of the outdoor power line in a controlled manner according to the working state of the indoor unit; the power signal sorting module is connected between the outdoor first switching element and the outdoor switching power supply; the outdoor first switching element is configured to controllably turn off the outdoor power supply line in a case where the indoor unit is switched to the standby state, and is further configured to controllably turn on the outdoor power supply line in a process where the indoor unit is switched from the standby state to the operating state.

Optionally, the outdoor unit further comprises an outdoor switching power supply for supplying power to the outdoor main control panel; the air conditioner also comprises an online component which is used for connecting the outdoor unit and each indoor unit and is configured to controllably connect a power line to the outdoor switch power supply or connect the second side second end of the outdoor communication isolation transmitting element to the indoor communication interface according to the working state of each indoor unit.

Optionally, the online component comprises: each connecting line is used for connecting the outdoor unit and one indoor unit and is provided with a first end used for connecting the indoor unit and a second end used for connecting the outdoor unit; the indoor switching assemblies are respectively arranged on one indoor unit and used for controllably connecting the first ends of the corresponding connecting wires to a power line or an indoor communication interface of the indoor unit according to the working state of the indoor unit; and the outdoor switching assembly is arranged on the outdoor unit and used for controllably connecting the second end of the connecting wire to the second end of the second side of the outdoor switch power supply or the second end of the outdoor communication isolation transmitting element according to the working state of the indoor unit.

Optionally, the indoor switching assembly comprises: an indoor power supply line for connecting a power supply line; and the indoor switching element is connected between the indoor power supply line and the first end of the connecting line and is used for controllably controlling the on-off of the indoor power supply line according to the working state of the indoor unit.

Optionally, the outdoor switching assembly comprises: the outdoor power supply line is used for connecting the outdoor switching power supply; the outdoor communication lines are respectively used for being connected with the second ends of the second sides of the outdoor communication isolation transmitting elements one by one; the outdoor second switching element is provided with a plurality of movable contacts which are respectively connected with the second ends of the connecting wires one by one; each movable contact is correspondingly provided with a first fixed contact and a second fixed contact, the first fixed contact is connected with an outdoor power supply line, and the second fixed contact is connected with an outdoor communication line; and the outdoor second switching element is used for controllably controlling the opening and closing of the first fixed contact and the second fixed contact according to the working state of each indoor unit.

Optionally, during the process of switching the indoor unit from the standby state to the operating state, the indoor switching module connects the first end of the connection line to the power line, the outdoor switching module connects the second end of the connection line to the outdoor switching power supply to energize the outdoor switching power supply, so that the outdoor switching power supply supplies power to the outdoor main control panel, and after the outdoor switching power supply supplies power to the outdoor main control panel, the indoor switching module connects the first end of the connection line to the indoor communication interface of the indoor unit, and the outdoor switching module connects the second end of the connection line to the second side second end of the outdoor communication isolation transmitting element.

The air conditioner comprises a power line, an outdoor unit and a plurality of indoor units. Wherein each indoor unit is provided with an indoor communication interface. The outdoor unit is internally provided with an outdoor main control panel, an outdoor communication isolation receiving element and a plurality of outdoor communication isolation transmitting elements. The second side first end of each outdoor communication isolation receiving element is connected to the second side second end of the outdoor communication isolation receiving element. The air conditioner can realize the communication between the indoor units and the outdoor unit only by arranging the outdoor communication isolation receiving element in the outdoor unit, and the outdoor communication isolation receiving element can receive communication signals sent to the outdoor unit by the indoor units, thereby simplifying the circuit structure of the multi-split air conditioner, realizing the sharing of the outdoor communication isolation receiving element and saving the manufacturing cost.

Furthermore, the air conditioner organically connects the indoor communication isolation transmitting element, the indoor communication isolation receiving element, the outdoor communication isolation transmitting element and the outdoor communication isolation receiving element, so that a novel communication circuit of the multi-split air conditioner is provided, and an idea is provided for simplifying the internal structure of an outdoor unit in the multi-split air conditioner.

Furthermore, the air conditioner of the invention also comprises a power signal arrangement module which is connected with the power line and the first end of the second side of the outdoor communication isolation receiving element. When a plurality of indoor units are in an operating state at the same time, only one power signal arrangement module is shared to perform power signal conversion, so that the energy consumption of the power signal conversion is saved, the operating power consumption of the air conditioner is reduced, and the energy conservation is realized.

Further, the air conditioner of the present invention is provided with an outdoor switching power supply for supplying power to the outdoor main control panel, an outdoor power line for connecting the power line to the outdoor switching power supply, and an outdoor first switching element connected between the outdoor power line and the outdoor switching power supply in the outdoor unit. The outdoor first switching element is configured to controllably turn off the outdoor power line under the condition that all the indoor units are switched to the standby state, so that the outdoor switching power supply, the outdoor main control panel and the power signal sorting module are powered off, the standby power consumption of the air conditioner is favorably reduced, and the low-power-consumption standby function is realized.

Further, the air conditioner of the present invention further comprises an online component for connecting the outdoor unit and the plurality of indoor units, and configured to controllably connect the power line to the outdoor switching power supply or connect the second side second end of the outdoor communication isolation transmitting element to the indoor communication interface according to the working state of each indoor unit, so that the air conditioner of the present invention can automatically adjust the connection mode between the indoor unit and the outdoor unit according to the working state of the indoor unit. The circuit structure of the air conditioner is improved by utilizing the on-line assembly, the circuit is favorably simplified, the air conditioner can utilize the power line to supply power to the outdoor switch power supply when any indoor unit exits from the standby state, the outdoor main control panel is electrified, the instant electrification function of the outdoor unit is realized, the outdoor unit is not required to be electrified in the standby state, and the communication between the indoor unit and the outdoor unit can be realized after the outdoor main control panel is electrified.

Furthermore, the on-line assembly of the air conditioner of the invention comprises a plurality of connecting lines, a plurality of indoor switching assemblies and an outdoor switching assembly. Each connecting line comprises a first end used for being connected to the indoor unit and a second end used for being connected to the outdoor unit. Each indoor switching assembly is arranged on each indoor unit and used for controllably connecting the first end of the connecting line to the power line or the indoor communication interface of the indoor unit according to the working state of the indoor unit. The outdoor switching assembly is arranged on the outdoor unit and used for controllably connecting the second end of the connecting wire to the second end of the second side of the outdoor switch power supply or the second end of the outdoor communication isolation transmitting element according to the working state of the indoor unit. The invention can not only utilize the connecting wire to provide power for the outdoor switch power supply, but also utilize the connecting wire to realize the communication between the indoor unit and the outdoor unit, thereby realizing the multiplexing of the connecting wire, and being beneficial to further simplifying the circuit structure.

Furthermore, the air conditioner of the present invention can switch the outdoor unit and any indoor unit from the standby state to the operating state, and can also switch the outdoor unit and any indoor unit from the operating state to the standby state favorable for low power consumption by controlling the indoor switching element, the outdoor first switching element and the outdoor second switching element, which not only simplifies the circuit structure, but also simplifies the control process, and is favorable for improving the automation degree.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic block diagram of an air conditioner according to one embodiment of the present invention;

fig. 2 is a schematic circuit configuration diagram of an air conditioner according to an embodiment of the present invention;

fig. 3 is a schematic diagram of communication signals of the respective optocouplers when performing communication between the indoor unit and the outdoor unit according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a circuit configuration of an air conditioner according to another embodiment of the present invention.

Detailed Description

Fig. 1 is a schematic block diagram of an air conditioner 10 according to one embodiment of the present invention.

The air conditioner 10 may generally include a power cord 110, a plurality of indoor units, and an outdoor unit 130. The outdoor unit 130 is one, and a plurality of indoor units are connected to the outdoor unit 130. That is, the air conditioner 10 of the present embodiment is a "multi-split air conditioner" or a "one-split air conditioner". The air conditioner 10 may further include a power signal conditioning module 180 and an inline component.

The power cord 110 is used to access an external power source. The external power supply can provide power frequency voltage for the air conditioner 10, for example, the power frequency voltage of the single-phase power supply in China is 220V at 50 Hz, and the power frequency voltage of the three-phase power supply is 380V at 50 Hz. The power cord 110 of the present embodiment may include a live line L and a neutral line N. That is, the external power source supplies power to the indoor units and/or the outdoor unit 130 of the air conditioner 10 through the power line 110, and for example, the external power source may supply power to the second side of the indoor communication isolating module of each indoor unit, the second side of the outdoor communication isolating module 135 of the outdoor unit 130, the outdoor switching power source U0 of the outdoor unit 130, and the like.

Fig. 2 is a schematic circuit diagram of the air conditioner 10 according to an embodiment of the present invention. It should be noted that, fig. 2 only illustrates a case where there are two indoor units, and the circuit structure of the air conditioner 10 is shown, and those skilled in the art should be able to expand the case where there are more than two indoor units on the basis of understanding the present embodiment, and the examples are not repeated here. The indoor unit of this embodiment may include a first indoor unit 120 and a second indoor unit 150.

Each indoor unit is provided with an indoor communication interface, and each indoor unit is provided with an indoor main control board and an indoor communication isolation module.

In fig. 2, a dashed box 121 shows the indoor main control panel M1 of the first indoor unit 120, and a dashed box 151 shows the indoor main control panel M2 of the second indoor unit 150. The indoor main control panel can be used to control the operation of each device (such as an indoor fan, a swing blade, etc.) in the indoor unit, and also used to control the communication between the indoor unit and the outdoor unit 130. The indoor main control board may have a communication port for communicating with the outdoor main control board M3 of the outdoor unit 130. The communication ports of the indoor main control board may include an indoor main control transmitting port for transmitting a communication signal and an indoor main control receiving port for receiving the communication signal.

In fig. 2, a dotted line box 125 shows the indoor communication isolation module 125 of the first indoor unit 120, and a dotted line box 155 shows the indoor communication isolation module 155 of the second indoor unit 150. The indoor communication isolation module may include an indoor communication isolation transmitting element and an indoor communication isolation receiving element. In fig. 2, U1 shows the indoor communication isolation receiving element of the first indoor unit 120, U2 shows the indoor communication isolation transmitting element of the first indoor unit 120, U3 shows the indoor communication isolation receiving element of the second indoor unit 150, and U4 shows the indoor communication isolation transmitting element of the second indoor unit 150.

The indoor communication isolation transmitting element and the indoor communication isolation receiving element respectively have a first side for connection with the indoor main control board and a second side for connection with the power line 110, so that there is no electrical direct connection between circuits on both sides of the indoor communication isolation module. The first side of the indoor communication isolation transmitting element can be connected with an indoor main control transmitting port, that is, the indoor main control panel is connected with the first side of the indoor communication isolation transmitting element through the indoor main control transmitting port and can send a communication signal to the outdoor unit 130; the first side of the indoor communication isolation receiving element can be connected with an indoor main control receiving port, that is, the indoor main control panel is connected with the first side of the indoor communication isolation receiving element through the indoor main control receiving port and can receive a communication signal from the outdoor unit 130, so that communication between the indoor unit and the outdoor unit 130 is realized.

In each indoor unit, the second-side first end of the indoor communication isolation transmitting element is connected with the second-side second end of the indoor communication isolation receiving element and serves as an indoor communication interface.

The indoor communication isolation module 125 of the first indoor unit 120 is taken as an example, and the connection manner of each element in the indoor communication isolation module is described in detail below. For example, in fig. 2, point K1 shows the second side first end of the indoor communication isolation receiving element, point a1 shows the second side second end of the indoor communication isolation receiving element, and points C1 and E1 show the first side of the indoor communication isolation receiving element; points K2 and a2 in fig. 2 show a first side of the indoor communicatively isolated transmitting element, C2 shows a second side second end of the indoor communicatively isolated transmitting element, and E2 shows the second side first end of the indoor communicatively isolated transmitting element. Since the connection manner of each element in the indoor communication isolating module 155 of the second indoor unit 150 is the same as that of each element in the indoor communication isolating module 125 of the first indoor unit 120, detailed description thereof is omitted. In fig. 2, a point P1 shows an indoor communication interface of the first indoor unit 120, and a point P2 shows an indoor communication interface of the second indoor unit 150.

The outdoor unit 130 includes an outdoor main control panel M3 and an outdoor communication isolating module 135. The outdoor main control panel M3 can be used to control the operation of each device (e.g., outdoor fan, compressor, etc.) in the outdoor unit 130, and also used to control the communication between the indoor units and the outdoor unit 130.

The outdoor main control panel M3 is shown by the dashed box 131 in fig. 2. The outdoor main control board M3 may have one outdoor main control receiving port for sending communication signals and a plurality of outdoor main control transmitting ports for receiving communication signals. Each outdoor main control sending port of the outdoor main control panel M3 is arranged corresponding to an indoor unit.

The outdoor communication isolation module 135 is shown in fig. 2 as a dashed box 135. The outdoor communication isolation module 135 includes an outdoor communication isolation receiving element U4 and a plurality of outdoor communication isolation transmitting elements. The number of outdoor communication isolation transmitting elements and the number of indoor units may be the same. In this embodiment, the number of the outdoor communication isolation transmitting elements may be two, and the outdoor communication isolation transmitting elements are respectively the first outdoor communication isolation transmitting element U3 and the second outdoor communication isolation transmitting element U7, and each outdoor communication isolation transmitting element is disposed corresponding to an indoor unit. U4 in fig. 2 shows an outdoor communication isolation receiving element U4, and U3 and U7 show a first outdoor communication isolation transmitting element U3 and a second outdoor communication isolation transmitting element U7, respectively.

The first side of the outdoor communication isolation receiving element U4 is connected to the outdoor main control receiving port, and the second side first end thereof is used for connecting to the power line 110. The first sides of the outdoor communication isolation transmitting elements are respectively connected with the outdoor main control transmitting ports one by one. And the second side first end of each outdoor communication isolated transmitting element is connected to the second side second end of the outdoor communication isolated receiving element U4.

For example, for the outdoor communication isolation receiving element U4, point a4 in fig. 2 shows the second side first end of the outdoor communication isolation receiving element U4, point K4 shows the second side second end of the outdoor communication isolation receiving element U4, and points C4 and E4 show the first side of the outdoor communication isolation receiving element U4. For each outdoor communication isolated transmitting element, taking the connection manner of the first outdoor communication isolated transmitting element U3 as an example, points A3 and K3 in fig. 2 show the first side of the first outdoor communication isolated transmitting element U3, point C3 shows the second side first end of the first outdoor communication isolated transmitting element U3, and point E3 shows the second side second end of the first outdoor communication isolated transmitting element U3. Since the second outdoor communication isolating transmitting element U7 is connected in the same manner as the first outdoor communication isolating transmitting element U3, detailed description thereof will be omitted.

The second side second end of each outdoor communication isolation transmitting element is used for connecting an indoor communication interface. For example, the second side second end of each outdoor communication isolation transmitting element may form an outdoor communication interface of the outdoor unit 130. The number of the outdoor communication interfaces of the present embodiment may be two, and the outdoor communication interfaces are respectively the first outdoor communication interface and the second outdoor communication interface. Point P3 in fig. 2 shows a first outdoor communication interface of the outdoor unit 130, which is used to connect to the indoor communication interface of the first indoor unit 120, so as to realize communication between the first indoor unit 120 and the outdoor unit 130; point P4 shows a second outdoor communication interface of the outdoor unit 130, which is used to connect with the indoor communication interface of the second indoor unit 150, so as to realize the communication between the second indoor unit 150 and the outdoor unit 130.

The air conditioner 10 of the embodiment can realize the communication between the indoor units and the outdoor unit 130 only by arranging the outdoor communication isolation receiving element U4 in the outdoor unit 130, and the outdoor communication isolation receiving element U4 can receive the communication signals sent by the indoor units to the outdoor unit 130, thereby simplifying the circuit structure of the multi-split air conditioner 10, realizing the sharing of the outdoor communication isolation receiving element U4 and saving the manufacturing cost.

By organically connecting the indoor communication isolation transmitting element, the indoor communication isolation receiving element, the outdoor communication isolation transmitting element and the outdoor communication isolation receiving element U4, a new communication circuit of the multi-split air conditioner 10 is provided, and an idea is provided for simplifying the internal structure of the outdoor unit 130 in the multi-split air conditioner 10.

The indoor communication isolating module and the outdoor communication isolating module are further described below in connection with a communication process between the indoor unit and the outdoor unit 130. The indoor communication isolation transmitting element, the outdoor communication isolation transmitting element, the indoor communication isolation receiving element and the outdoor communication isolation receiving element U4 in this embodiment may all be optical couplers. For example, in fig. 2, a1 shows an anode of the diode, K1 shows a cathode of the diode, C1 shows a collector of the transistor, and E1 shows an emitter of the transistor. The triode internal pressure vcoo of the indoor communication isolation transmitting element and the outdoor communication isolation transmitting element may be 350V, and the triode internal pressure vcoo of the indoor communication isolation receiving element and the outdoor communication isolation receiving element U4 may be 80V.

Take the communication process between the first indoor unit 120 and the outdoor unit 130 as an example. Fig. 3 is a schematic diagram of communication signals of the respective optical couplers when the indoor unit communicates with the outdoor unit 130 according to an embodiment of the present invention, and fig. 3(a) illustrates communication signals of the respective optical couplers when the first indoor unit 120 transmits a communication signal to the outdoor unit 130. When the first indoor unit 120 sends a communication signal to the outdoor unit 130, the first outdoor communication isolation transmitting element U3 is first turned on, the first indoor unit 120 sends a communication signal through the indoor communication isolation transmitting element U2, the outdoor unit 130 receives the communication signal sent by the first indoor unit 120 through the outdoor communication isolation receiving element U4, meanwhile, the first indoor unit 120 receives the communication signal sent by the first indoor unit 120 through the indoor communication isolation receiving element U1, and if the communication signal is wrong, the communication signal can be sent again.

Fig. 3(b) shows communication signals of the respective optical couplers when the outdoor unit 130 transmits a communication signal to the first indoor unit 120. When the outdoor unit 130 sends a communication signal to the first indoor unit 120, the indoor communication isolation transmitting element U2 is first turned on, the outdoor unit 130 sends a communication signal through the first outdoor communication isolation transmitting element U3, the first indoor unit 120 receives the communication signal sent by the outdoor unit 130 through the indoor communication isolation receiving element U1, and meanwhile, the outdoor unit 130 receives the communication signal sent by the outdoor unit 130 through the outdoor communication isolation receiving element U4, and if the communication signal is wrong, the communication signal can be sent again.

The power signal grooming module 180 is shown in fig. 2 as a dashed box 180. The number of the power signal arrangement modules 180 is one. The power signal conditioning module 180 is connected to the power line 110 and the second side first end of the outdoor communication isolation receiving element U4, and is configured to convert the power signal of the external power source into the communication power signals required by the second sides of the indoor communication isolation transmitting elements and the indoor communication isolation receiving elements of the plurality of indoor units, and the second sides of the outdoor communication isolation transmitting elements and the second sides of the outdoor communication isolation receiving element U4, to provide the operating power of the second sides of the indoor communication isolation transmitting elements and the indoor communication isolation receiving elements of the indoor units, and the second sides of the outdoor communication isolation transmitting elements and the second sides of the outdoor communication isolation receiving element U4.

In this embodiment, the second side second end of the outdoor communication isolating receiving element U4 is connected to the second side first end of each outdoor communication isolating transmitting element, and the second side second end of each outdoor communication isolating transmitting element is connected to the second side second end of an indoor communication isolating transmitting element, thereby forming a plurality of communication links for connecting the outdoor unit 130 and each indoor unit. The power signal grooming module 180 isolates the second side first end of the receiving element U4 by connecting the power cord 110 to the outdoor communication, thereby enabling the power signal grooming module 180 to connect the power cord 110 to a plurality of lifelines. That is, the present embodiment provides the operating power to the plurality of communication links at the same time by using only one power signal collating module 180.

The power signal arrangement module 180 is configured to convert a power signal flowing through the power line 110 and coming from an external power source, so that the power signal is converted into a communication power signal required by a plurality of communication links, for example, an ac voltage signal coming from the external power source may be converted into a dc voltage signal, and a voltage value of the dc voltage signal may be adjusted, so that the power signal arrangement module 180 may provide a proper working power source for the plurality of communication links, which may reduce or prevent the communication isolation module from being damaged, and is beneficial to improving the overall service life of the air conditioner 10, and improving the reliability of communication between the indoor unit and the outdoor unit 130.

The power line 110 and the plurality of communication links are connected by using one power signal organizing module 180, so that the air conditioner 10 can provide a proper working power supply for the outdoor unit 130 and the second sides of the communication isolating modules of the plurality of indoor units by using the same power signal organizing module 180, so that the power signal organizing module 180 becomes a common power supply for the plurality of communication links, and the circuit structure of the multi-split air conditioner 10 is simplified. In this embodiment, when a plurality of indoor units are in an operating state at the same time, only one power signal sorting module 180 is used for power signal conversion, so that energy consumption of power signal conversion is reduced, which is beneficial to reducing the operating power consumption of the air conditioner 10 and saving energy.

The power signal management module 180 may be disposed in the outdoor unit 130. The connection manner of the power signal arrangement module 180 in the outdoor unit 130 will be described in detail below.

The outdoor unit 130 may further include an outdoor switching power supply U0, an outdoor power supply line, and an outdoor first switching element K4. U0 in fig. 2 shows an outdoor switching power supply U0. The outdoor switching power supply U0 may be connected to the power cord 110 and used to provide power to the outdoor main control panel M3. For example, power may be supplied to the outdoor main control board M3 when the outdoor switching power supply U0 is in a power-on state, thereby powering on the outdoor main control board M3. The outdoor power line is used to connect the power line 110 to the outdoor switching power supply U0. That is, the power cord 110 may be directly connected to the outdoor switching power supply U0 through an outdoor power cord. For example, the outdoor power line may be a wire between the point G3, the point G4, and the outdoor switching power supply U0 in fig. 2.

The outdoor first switching element K4 is connected between the outdoor power line and the outdoor switch power supply U0 and is used for controllably controlling the on-off of the outdoor power line according to the working state of the indoor unit. For example, the outdoor first switching element K4 may be the fourth relay K4 in fig. 2, which has a contact 1 and a contact 2. And the outdoor first switching element K4 may be controlled by the outdoor main control board M3, i.e., the coil of the fourth relay K4 is connected to the outdoor main control board M3. When the outdoor first switching element K4 is closed, the outdoor power line is in an on state, at which time the power line 110 is directly connected to the outdoor switching power supply U0 through the outdoor power line. When the outdoor first switching element K4 is turned on, the outdoor power line is in an off state, and the power line 110 cannot be connected to the outdoor switching power supply U0 through the outdoor power line.

In the present embodiment, the outdoor first switching element K4 is configured to controllably turn off the outdoor power supply line when all the indoor units are switched to the standby state, and is also configured to controllably turn on the outdoor power supply line during the switching of any of the indoor units from the standby state to the operating state. That is, when all the indoor units are switched to the standby state, the outdoor first switching element K4 may turn off the power supply circuit between the power line 110 and the outdoor switching power supply U0, so that the outdoor switching power supply U0 and the outdoor main control panel M3 are powered off, thereby reducing the standby power consumption of the air conditioner 10 and achieving energy saving. In the process of switching any indoor unit from the standby state to the operating state, and after the outdoor main control board M3 is powered on, the outdoor first switching element K4 can be controlled to switch on the outdoor power line, so that the power line 110 can be used to supply power to the outdoor switching power supply U0 and the power signal sorting module 180, so that the outdoor switching power supply U0 and the power signal sorting module 180 are powered on, and the outdoor unit 130 can be smoothly switched to the operating state.

In this embodiment, the power signal conditioning module 180 may be connected between the outdoor first switching element K4 and the outdoor switching power supply U0, for example, the outdoor power line may be connected to the contact 1 of the outdoor first switching element K4, and both the power signal conditioning module 180 and the outdoor switching power supply U0 may be connected to the contact 2 of the outdoor first switching element K4. When the outdoor first switching element K4 turns off the outdoor power line, the power signal collating module 180 is also powered off. Compared with the scheme that the power signal sorting module 180 is arranged in the indoor unit, after all the indoor units of the air conditioner 10 enter the standby state, the power signal sorting module 180 is in the power-off state, and no electric energy is consumed, so that the standby power consumption of the power signal sorting module 180 is reduced, and the standby zero power consumption of the power signal sorting module 180 is realized, so that the whole standby power consumption of the air conditioner 10 can be further reduced, and the electric energy is saved.

Power signal conditioning module 180 may include a rectifier D1 and a voltage regulation component. The rectifier D1 is used to convert the power signal of the external power source into a dc voltage signal required by the second side of the outdoor communication isolation module and the second side of the indoor communication isolation module. For example, the external power source may provide an ac voltage to the air conditioner 10, and the rectifier D1 may be a rectifying diode for converting an ac voltage signal from the external power source into a dc voltage signal. Rectifier D1 has an input terminal, which is the anode of the rectifier diode, and an output terminal, which is the cathode of the rectifier diode.

The voltage regulating component is connected to the rectifier D1 for regulating the voltage value of the dc voltage signal. The voltage regulation components may include a smoothing capacitor C1 and a voltage regulation component. A smoothing capacitor C1 may be connected to the output of the rectifier D1 for filtering the dc voltage signal. That is, the smoothing capacitor C1 can adjust the dc voltage signal to a smooth and reliable voltage signal. The voltage stabilizing component is used for adjusting the output voltage value of the smoothing capacitor C1 and is provided with a first resistor R1 connected with the input end of the rectifier D1, and a Zener diode D2 and a second resistor R2 which are arranged in parallel with the smoothing capacitor C1, wherein the Zener diode D2 and the second resistor R2 are arranged in parallel with each other. The first resistor R1 and the second resistor R2 can be current-limiting resistors, which play a role in limiting current and dividing voltage, so as to prevent the smoothing capacitor C1 from being damaged due to the fact that the charging current of the smoothing capacitor C1 is too large. The first resistor R1, the second resistor R2 and the zener diode D2 may form a voltage stabilizing circuit and are used to adjust the output voltage value of the smoothing capacitor C1, for example, the output voltage value of the smoothing capacitor C1 may be adjusted to tens of volts.

The on-line assembly is used for connecting the outdoor unit 130 and each indoor unit, and is configured to controllably connect the power line 110 to the outdoor switching power supply U0 or connect the second side second end of the outdoor communication isolation transmitting element to the indoor communication interface according to the working state of each indoor unit. The connection mode of the on-line component connecting the indoor unit and the outdoor unit 130 may be any one of the following connection modes: firstly, the power line 110 is connected to the outdoor switch power supply U0 to supply power to the outdoor switch power supply U0 by using the power line 110, and secondly, the second end of the second side of the outdoor communication isolation transmitting element is connected to the indoor communication interface to realize the communication between the indoor unit and the outdoor unit 130.

By switching the connection mode between the indoor units and the outdoor unit 130 through the on-line component, the air conditioner 10 can use the power line 110 to supply power to the outdoor switch power supply U0 when any indoor unit exits from the standby state, so that the outdoor main control panel M3 is powered on, and the "instant power on" function of the outdoor unit 130 is realized, so that the outdoor unit 130 does not need to be powered on in the standby state, and the communication between the indoor units and the outdoor unit 130 can be realized after the outdoor main control panel M3 is powered on, so that the air conditioner 10 of the present embodiment can automatically switch the connection mode between the indoor units and the outdoor unit 130 according to the working state. By improving the circuit structure of the air conditioner 10 using the on-line component, the connection mode between the indoor unit and the outdoor unit 130 is automatically switched, which is beneficial to simplifying the circuit.

By improving the circuit structure, the outdoor unit 130 is powered on instantly by switching the connection mode of the indoor unit and the outdoor unit 130 through the on-line component, when all the indoor units are in the standby state, all the outdoor units 130 can be powered off, and only the indoor units are in standby, so that the standby power consumption can be saved.

The on-line module may include a plurality of connection lines, a plurality of indoor switching modules, and an outdoor switching module.

The connection lines are respectively used for connecting the outdoor unit 130 and one indoor unit, and each connection line has a first end for connecting the indoor unit and a second end for connecting the outdoor unit 130. For example, the connection lines may include a first connection line for connecting the first indoor unit 120 and the outdoor unit 130, and a second connection line for connecting the second indoor unit 150 and the outdoor unit 130. Wherein the first connecting line may be a wire between point P1 and the contact 1 of the third relay K3 in fig. 2. The second connection line may be a wire between the point P2 in fig. 2 and the contact 4 of the third relay K3.

Each indoor switching component is respectively arranged on one indoor unit and is used for controllably connecting the first end of the connecting line to the power line 110 or the indoor communication interface according to the working state of the indoor unit. The outdoor switching assembly is disposed in the outdoor unit 130, and is used for controllably connecting the second end of the corresponding connecting line to the second end of the outdoor switching power supply U0 or the second end of the corresponding outdoor communication isolation transmitting element according to the working state of each indoor unit.

And under the condition that all the indoor units are in standby, the outdoor switch power supply U0, the outdoor main control board M3 and the power signal sorting module 180 are powered off. During the process of switching any indoor unit from the standby state to the operating state, the indoor switching component of the indoor unit connects the first end of the connecting line to the power line 110, the outdoor switching component connects the second end of the corresponding connecting line to the outdoor switching power supply U0 to energize the outdoor switching power supply U0, so that the outdoor switching power supply U0 supplies power to the outdoor main control board M3, and after the outdoor switching power supply U0 supplies power to the outdoor main control board M3, the indoor switching component connects the first end of the connecting line to the indoor communication interface, and the outdoor switching component connects the second end of the corresponding connecting line to the second end of the second side of the corresponding outdoor communication isolation transmitting element.

That is, the air conditioner 10 of the present embodiment uses each connection line, the indoor switching element of each indoor unit, and the outdoor switching element of the outdoor unit 130 to switch the connection manner between each indoor unit and the outdoor unit 130. Each connecting line is used for connecting the outdoor unit 130 with each indoor unit, and the indoor switching module and the outdoor switching module are used for switching the connection mode of the first end and the second end of the connecting line according to the working state of the indoor unit, and switching the connection mode between the indoor unit and the outdoor unit 130 by switching the connection mode of the first end and the second end of the connecting line.

The indoor unit can have a plurality of working states such as a standby state, an operation state and the like. When all the indoor units are in the standby state, the air conditioner 10 is connected to the external power supply but does not perform any substantial operation, the outdoor switch power supply U0 is powered off, and the outdoor main control board M3 is powered off. When the indoor unit is switched to the operation state, the indoor unit and the outdoor unit 130 can operate according to a user instruction, so as to adjust various parameters such as the temperature and the humidity of the indoor air.

The air conditioner 10 of the present embodiment can supply power to the outdoor switching power supply U0 by using the connection lines, and can realize communication between the indoor unit and the outdoor unit 130 by using the connection lines, which realizes multiplexing of the connection lines, which is advantageous to further simplify the circuit structure. The connection line may be an electric wire.

The indoor switching assembly of each indoor unit may include an indoor power supply line and an indoor switching element. Wherein the indoor power supply line is used to connect the power line 110. That is, the house power supply line is used to connect the power line 110 with a first end of the connection line. For example, the indoor power supply line of the first indoor unit 120 may be a line between G1 point and the contact 1 of the first relay K1 in fig. 2, and the indoor power supply line of the second indoor unit 150 may be a line between G1 point and the contact 1 of the second relay K2 in fig. 2. The indoor switching element is connected between the indoor power supply line and the first end of the connecting line and is used for controllably controlling the on-off of the indoor power supply line according to the working state of the indoor unit. The indoor switching element of the first indoor unit 120 may be the first relay K1 of fig. 2, and the indoor switching element of the second indoor unit 150 may be the second relay K2 of fig. 2. And the indoor switching element of each indoor unit can be controlled by the indoor main control board of the indoor unit. That is, the coil of the first relay K1 is connected to the indoor main control board M1 of the first indoor unit 120, and the coil of the second relay K2 is connected to the indoor main control board M2 of the second indoor unit 150. The contact 2 of the first relay K1 is connected to the first end of the first connection line. The contact 2 of the second relay K2 is connected to the first end of the second connection line.

That is, the air conditioner 10 switches the connection manner of the first end of the connection line using the indoor switching element. The connection mode of the first end of the connection line may be any one of the following connection modes: the first end of the connecting line is connected to the power line 110, and the second end of the connecting line is connected to the indoor communication interface. When the indoor switching element is closed, the indoor power supply line is in an on state, at which the first end of the connection line is connected to the power supply line 110. When the indoor switching element is opened, the indoor power supply line is in an off state, and the first end of the connecting line is connected to the indoor communication interface. In this embodiment, the indoor power supply line may be connected to the live line L of the power supply line 110.

The outdoor switching assembly may include an outdoor power supply line, a plurality of outdoor communication lines, and an outdoor second switching element K3. The outdoor power supply line is used for connecting an outdoor switching power supply U0. That is, the outdoor power supply line is used to connect the outdoor switching power supply U0 with the second end of each connection line. For example, the outdoor power supply line may be a line between contact 5 and point G2 of the third relay K3 in fig. 2. The outdoor communication lines are respectively used for being connected with the second ends of the second sides of the outdoor communication isolation transmitting elements one by one. That is, each outdoor communication line is used for connecting one outdoor communication interface with the second end of the corresponding connecting line. For example, the outdoor communication line may include a first outdoor communication line for connection with the second end of the first connection line, which may be a connection line between the contacts 3 and P3 of the third relay K3 in fig. 2, and a second outdoor communication line for connection with the second end of the second connection line, which may be a connection line between the contacts 6 and P4 of the third relay K3 in fig. 2.

The outdoor second switching element K3 may be the third relay K3 in fig. 2, and the third relay K3 is a double pole double throw relay. The outdoor second switching element K3 has a plurality of moving contacts connected to the second ends of the plurality of connection lines one by one, respectively. And each movable contact is correspondingly provided with a first fixed contact and a second fixed contact, the first fixed contact is connected with an outdoor power supply line, and the second fixed contact is connected with an outdoor communication line. The outdoor second switching element K3 is used for controllably controlling the opening and closing of the first stationary contact and the second stationary contact according to the operating state of each indoor unit.

The outdoor second switching member K3 has a first movable contact (contact 1 of the K3 relay in fig. 2), and a first fixed contact (contact 2 of the K3 relay in fig. 2, hereinafter referred to as "first fixed contact") and a second fixed contact (contact 3 of the K3 relay in fig. 2, hereinafter referred to as "second fixed contact") corresponding to the first movable contact, the first movable contact of which is connected to the second end of the first connection line, the first fixed contact is connected to the outdoor power supply line, the second fixed contact is connected to the first outdoor communication line, and the outdoor second switching member K3 is used to controllably control opening and closing of the first fixed contact and the second fixed contact in accordance with the operating state of the first indoor unit 120. The on-off of the outdoor power supply line can be controlled by controlling the on-off of the first fixed contact, and the on-off of the first outdoor communication line can be controlled by controlling the on-off of the second fixed contact. And the outdoor second switching element K3 may be controlled by the outdoor main control board M3. That is, the coil of the third relay K3 is connected to the outdoor main control board M3. When the outdoor main control panel M3 is powered on, the outdoor main control panel M3 may control the opening and closing of the first stationary contact and the second stationary contact in the outdoor second switching element K3.

The outdoor second switching element K3 further has a second movable contact (contact 4 of the K3 relay in fig. 2), and a first fixed contact (contact 5 of the K3 relay in fig. 2, hereinafter referred to as "third fixed contact") and a second fixed contact (contact 6 of the K3 relay in fig. 2, hereinafter referred to as "fourth fixed contact") corresponding to the second movable contact, the second movable contact of which is connected to the second end of the second connection line, the third fixed contact of which is connected to the outdoor power supply line, the fourth fixed contact of which is connected to the second outdoor communication line, and the outdoor second switching element K3 is used to controllably control the opening and closing of the third fixed contact and the fourth fixed contact in accordance with the operating state of the second indoor unit 150. The on-off of the outdoor power supply line can be controlled by controlling the on-off of the third static contact, and the on-off of the second outdoor communication line can be controlled by controlling the on-off of the fourth static contact. When the outdoor main control panel M3 is powered on, the outdoor main control panel M3 may control the opening and closing of the third stationary contact and the fourth stationary contact in the outdoor second switching element K3.

When all the indoor units are in the standby state, the communication link between the indoor unit and the outdoor unit 130 may be turned off, and the power supply circuit between the power line 110 and the outdoor switching power supply U0 may be turned off, so that the outdoor switching power supply U0 and the outdoor main control panel M3 are powered off.

The air conditioner 10 of the present embodiment can smoothly switch the indoor unit from the standby state to the operating state, and can also switch the indoor unit from the operating state to the standby state with low power consumption, by controlling the indoor switching element, the outdoor first switching element K4, and the outdoor second switching element K3, which not only simplifies the circuit structure, but also simplifies the control process, which is beneficial to improving the degree of automation.

The circuit configuration and the circuit switching process of the air conditioner 10 will be further described below in connection with the operation state switching process of the indoor unit.

Take the second indoor unit 150 as an example. And under the condition that all the indoor units are in standby, the outdoor switch power supply U0, the outdoor main control board M3 and the power signal sorting module 180 are powered off. In the process of switching the second indoor unit 150 from the standby state to the operation state: controlling the indoor switching element K2 of the second indoor unit 150 to close, so as to connect the indoor power supply line of the second indoor unit 150, and at this time, connecting the first end of the second connecting line to the power supply line 110; at this time, the third stationary contact of the outdoor second switching element K3 is closed, the fourth stationary contact is open, that is, the outdoor power supply line is in an on state, and the second outdoor communication line is in an off state, and at this time, the second end of the second connection line is connected to the outdoor switching power supply U0, so that the power supply line 110 supplies power to the outdoor switching power supply U0 through the indoor power supply line, the second connection line, and the outdoor power supply line of the second indoor unit 150 to energize the outdoor switching power supply U0; after the outdoor switch power supply U0 is powered on, power can be supplied to the outdoor main control board M3, so that the outdoor main control board M3 is powered on; after the outdoor main control board M3 is powered on, the outdoor first switching element K4 is controlled to be closed, so that the outdoor power line is connected, the fourth stationary contact of the outdoor second switching element K3 is controlled to be closed, the third stationary contact is controlled to be opened, so that the second outdoor communication line is connected, the outdoor power supply line is disconnected, the indoor switching element of the second indoor unit 150 is controlled to be opened, so that the indoor power supply line of the second indoor unit 150 is disconnected, at this time, the first end of the second connecting line is connected to the indoor communication interface of the second indoor unit 150, and the second end of the second connecting line is connected to the second end on the second side of the first outdoor communication isolation transmitting element U3, namely, the second outdoor communication interface, so that the second indoor unit 150 and the outdoor unit 130 realize communication through the second connecting line.

If the first indoor unit 120 is already in the standby state, during the process of switching the second indoor unit 150 from the operating state to the standby state: and the third static contact of the outdoor second switching element K3 is controlled to be closed, the fourth static contact is controlled to be opened, the second end of the second connecting wire is connected to the outdoor switching power supply U0, the outdoor first switching element K4 is controlled to be opened, the outdoor power line is turned off, and therefore the outdoor switching power supply U0 and the outdoor main control panel M3 are powered off, and low-power-consumption standby is achieved. At this time, since the indoor switching element of the second indoor unit 150 is kept open, the power supply line 110 cannot supply power to the outdoor switching power supply U0 through the indoor power supply line, the second connection line, and the outdoor power supply line of the second indoor unit 150. And, after controlling the outdoor first switching element K4 to be turned on so that the outdoor power line is turned off, the power signal collating module 180 is powered off.

Each indoor unit of the present embodiment may further include an indoor forward diode and an indoor current limiting resistor, which are sequentially connected to the collector of the indoor communication isolation transmitting element. Taking the first indoor unit 120 as an example, the indoor forward diode of the first indoor unit 120 is D3 in fig. 2, and the indoor current limiting resistor is R3 in fig. 2. The cathode of the indoor forward diode may be connected to the collector of the indoor communication isolation emitter element. The anode of the indoor forward diode may be connected to an indoor current limiting resistor. The indoor current limiting resistor is used for limiting current. The indoor forward diode is used to prevent current from flowing in the reverse direction.

The outdoor unit 130 may further include a plurality of outdoor forward diodes and a plurality of outdoor current limiting resistors, and an outdoor forward diode and an outdoor current limiting resistor are sequentially connected to an emitter of an outdoor communication isolating transmitting element. An anode of the outdoor forward diode may be connected to an emitter of the outdoor communication isolation transmitting element, and a cathode of the outdoor forward diode may be connected to the outdoor current limiting resistor. The outdoor current limiting resistor is used for limiting current. An outdoor forward diode is used to prevent the reverse flow of current. For example, D4 and R4 in fig. 2 show an outdoor forward diode and an outdoor current limiting resistor, respectively, connected in sequence to the emitter of the first outdoor communication isolation transmitting element U3.

In the above embodiment, the indoor power supply line may be connected to the live line L of the power supply line 110.

Fig. 4 is a schematic diagram of a circuit configuration of the air conditioner 10 according to another embodiment of the present invention.

In still further embodiments, the connection between the house supply line and the power supply line 110 may also be varied. The indoor power supply line of the indoor unit may be connected to the neutral line N of the power line 110, which may improve the safety and reliability of the circuit switching process.

The air conditioner 10 of the present embodiment organically connects the indoor communication isolation transmitting element, the indoor communication isolation receiving element, the outdoor communication isolation transmitting element, and the outdoor communication isolation receiving element U4, and only one outdoor communication isolation receiving element U4 is disposed in the outdoor unit 130 to achieve communication between a plurality of indoor units and the outdoor unit 130, and the outdoor communication isolation receiving element U4 may receive communication signals sent by a plurality of indoor units to the outdoor unit 130, thereby simplifying the circuit structure of the multi-split air conditioner 10, achieving the sharing of the outdoor communication isolation receiving element U4, saving the manufacturing cost, providing a new communication circuit of the multi-split air conditioner 10, and providing an idea for simplifying the internal structure of the outdoor unit 130 in the multi-split air conditioner 10.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.

Claims (10)

1. An air conditioner comprising:

the power line is used for accessing an external power supply;

a plurality of indoor units, each of which has an indoor communication interface;

the off-premises station, be provided with in it:

the outdoor master control board is provided with an outdoor master control receiving port and a plurality of outdoor master control sending ports;

the first side of the outdoor communication isolation receiving element is connected with the outdoor main control receiving port, and the first end of the second side of the outdoor communication isolation receiving element is used for being connected to the power line;

the first sides of the outdoor communication isolation transmitting elements are respectively connected with the outdoor main control transmitting ports one by one; a second side first end of each of the outdoor-communication-isolated transmit elements is connected to a second side second end of the outdoor-communication-isolated receive element; the second side second end of each outdoor communication isolation transmitting element is used for connecting one indoor communication interface.

2. The air conditioner according to claim 1, wherein

Each of the indoor units includes:

the indoor main control board is provided with an indoor main control receiving port and an indoor main control sending port;

the first side of the indoor communication isolation receiving element is connected with the indoor main control receiving port;

and the first side of the indoor communication isolation transmitting element is connected with the indoor main control transmitting port, and the first end of the second side of the indoor communication isolation transmitting element is connected with the second end of the second side of the indoor communication isolation receiving element and serves as the indoor communication interface.

3. The air conditioner of claim 1, further comprising:

a power signal conditioning module coupled to the power line and the second side first end of the outdoor communication isolation receiving element and configured to convert the power signal of the external power source into a plurality of communication power signals required by the second side of the indoor communication isolation transmitting element and the second side of the indoor communication isolation receiving element of the indoor unit and the second side of the outdoor communication isolation transmitting element and the second side of the outdoor communication isolation receiving element to provide operating power to the second side of the indoor communication isolation transmitting element and the second side of the indoor communication isolation receiving element of the indoor unit and the second side of the outdoor communication isolation transmitting element and the second side of the outdoor communication isolation receiving element of the indoor unit.

4. The air conditioner according to claim 3, wherein

The power signal arrangement module is arranged in the outdoor unit and comprises:

the rectifier is used for converting a power supply signal of the external power supply into a direct-current voltage signal required by the second side of the outdoor unit communication isolation module and the second side of the indoor unit communication isolation module;

and the voltage regulating component is connected to the rectifier and used for regulating the voltage value of the direct-current voltage signal.

5. The air conditioner as claimed in claim 3, wherein

The outdoor unit further includes:

the outdoor switch power supply is used for supplying power to the outdoor main control panel;

an outdoor power line for connecting the power line to the outdoor switching power supply;

the outdoor first switching element is connected between the outdoor power line and the outdoor switching power supply and is used for controlling the on-off of the outdoor power line in a controlled manner according to the working state of the indoor unit; and is

The power supply signal sorting module is connected between the outdoor first switching element and the outdoor switching power supply; the outdoor first switching element is configured to controllably turn off the outdoor power supply line in a case where the indoor unit is switched to a standby state, and is further configured to controllably turn on the outdoor power supply line in a process where the indoor unit is switched from the standby state to an operating state.

6. The air conditioner according to claim 1, wherein

The outdoor unit also comprises an outdoor switch power supply which is used for supplying power to the outdoor main control panel;

the air conditioner also comprises an online component which is used for connecting the outdoor unit and each indoor unit and is configured to controllably connect the power line to the outdoor switch power supply or connect the second side second end of the outdoor communication isolation transmitting element to the indoor communication interface according to the working state of each indoor unit.

7. The air conditioner according to claim 6, wherein

The online component comprises:

the outdoor unit comprises a plurality of indoor units, a plurality of connecting wires and a controller, wherein each connecting wire is used for connecting the outdoor unit and one indoor unit and is provided with a first end used for connecting the indoor units and a second end used for connecting the outdoor unit;

each indoor switching assembly is arranged on one indoor unit and used for controllably connecting the first end corresponding to the connecting line to the power line or an indoor communication interface of the indoor unit according to the working state of the indoor unit;

and the outdoor switching assembly is arranged on the outdoor unit and used for controllably connecting the second end of the connecting line to the second end of the second side of the outdoor switching power supply or the second end of the outdoor communication isolation transmitting element according to the working state of the indoor unit.

8. The air conditioner according to claim 7, wherein

The indoor switching assembly includes:

an indoor power supply line for connecting the power supply line;

and the indoor switching element is connected between the indoor power supply line and the first end of the connecting line and is used for controllably controlling the on-off of the indoor power supply line according to the working state of the indoor unit.

9. The air conditioner as claimed in claim 7, wherein

The outdoor switching assembly comprises:

an outdoor power supply line for connecting the outdoor switching power supply;

the outdoor communication lines are respectively used for being connected with the second ends of the second sides of the outdoor communication isolation transmitting elements one by one;

the outdoor second switching element is provided with a plurality of movable contacts which are respectively connected with the second ends of the connecting wires one by one; each movable contact is correspondingly provided with a first fixed contact and a second fixed contact, the first fixed contact is connected with the outdoor power supply line, and the second fixed contact is connected with the outdoor communication line; the outdoor second switching element is used for controllably controlling the opening and closing of the first fixed contact and the second fixed contact according to the working state of each indoor unit.

10. The air conditioner according to claim 7, wherein

In the process that the indoor unit is switched from the standby state to the running state, the indoor switching assembly connects the first end of the connecting line to the power line, the outdoor switching assembly connects the second end of the connecting line to the outdoor switching power supply to enable the outdoor switching power supply to be electrified, so that the outdoor switching power supply supplies power to the outdoor main control panel, after the outdoor switching power supply supplies power to the outdoor main control panel, the indoor switching assembly connects the first end of the connecting line to the indoor communication receiving interface of the indoor unit, and the outdoor switching assembly connects the second end of the connecting line to the second end on the second side of the outdoor communication isolation transmitting element.

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