CN204389925U - A kind of air conditioner and low standby power loss circuit thereof - Google Patents

Abstract

The utility model relates to a kind of air conditioner and low standby power loss circuit thereof, the utility model air-conditioning low standby power loss circuit stops when air conditioner is standby powering to off-premises station circuit, and when starting power wiring L through signal wire indoor machine start the circuit in off-premises station after powering to off-premises station, the function reducing power consumption can be realized.Low standby power loss circuit comprises the testing circuit for detecting power wiring L and signal wire connection status, when testing circuit detects power wiring L and signal wire disconnects, signal wire again in pulpit between communication module and outdoor communication module is connected, when can effectively prevent power wiring and signal wire from not disconnecting, namely signal wire between indoor communication module and outdoor communication module is connected, alternating current is directly applied on outdoor communication module by power wiring L, is burnt by outdoor communication module.Thus, the utility model has carried out available protecting to the work safety of circuit devcie while realizing low-power consumption.

Description

An air conditioner and its low standby power consumption circuit

technical field

The utility model belongs to the technical field of air conditioners, and in particular relates to a low standby power consumption circuit of an air conditioner and an air conditioner using the circuit.

Background technique

As the energy efficiency standards of air conditioners are getting higher and higher, the standby power consumption of air conditioners has also attracted more and more attention. In an existing common air conditioner, when the air conditioner is in standby mode, both the indoor unit circuit and the outdoor unit circuit of the air conditioner are in a power-on state, which consumes a lot of energy. In order to reduce the standby power consumption of the air conditioner, an energy-saving air conditioner is proposed. The indoor unit and the outdoor unit are connected by the power wiring L, N, and the signal line C for transmitting signals. When starting, the power wiring L supplies power from the indoor unit to the outdoor unit through the signal line to start the circuit in the outdoor unit. However, if the indoor communication module and the outdoor communication module are connected when the signal line is not disconnected from the power distribution line L, the outdoor communication module is easily burned, which poses a safety hazard.

Utility model content

The purpose of the utility model is to provide a circuit with low standby power consumption of an air conditioner, which solves the technical problems of high standby power consumption of the existing air conditioner circuit and potential safety hazards such as easy burning of outdoor communication modules.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions to achieve:

A low standby power consumption circuit for an air conditioner, comprising an indoor unit circuit and an outdoor unit circuit, power wiring L and N for transmitting alternating current and a signal line C for transmitting signals between the indoor unit circuit and the outdoor unit circuit, the The power wiring L in the indoor unit circuit is connected to the signal line C after passing through the second on-off switch K2; the power wiring L in the outdoor unit circuit supplies power to the outdoor unit through the fourth on-off switch K4, and the signal line C is connected to the power wiring L through the third on-off switch K3. After the signal line C passes through the third on-off switch K3, a protection circuit D1 is set between the power wiring L and the power wiring N. A detection circuit is connected, and when the detection circuit detects that the power wiring L is disconnected from the signal line, it controls the third on-off switch K3 to switch to connect with the outdoor communication module, and the protection circuit D1 is used for when the fourth on-off switch K3 When the switch K4 is closed, the alternating current is prevented from flowing to the signal line C and the detection circuit of the second on-off switch K2.

As for the low standby power consumption circuit of the air conditioner, the protection circuit D1 is a diode D1.

As for the low standby power consumption circuit of the air conditioner, the detection circuit includes a protection circuit D2 and a photocoupler, the input end of the photocoupler is connected to the protection circuit D2 and the power wiring N, and the output of the photocoupler output signal to the outdoor control module of the outdoor circuit, the outdoor control module receives the output signal of the photocoupler and outputs a control signal to control the switching of the third on-off switch K3, and the protection circuit D2 is used to prevent the alternating current from the power wiring N flows to power wiring C.

As for the low standby power consumption circuit of the air conditioner, the detection circuit includes a protection circuit D2, a photocoupler and an on-off switch, the input end of the photocoupler is connected to the protection circuit D2 and the power wiring N, and the photoelectric The output terminal of the coupler outputs a signal to the on-off switch to control the state of the on-off switch. One end of the on-off switch is connected to the signal output end of the outdoor control module to control the third on-off switch K3, and the other end is grounded. The circuit D2 serves to prevent the flow of alternating current from the power wiring N to the power wiring C.

As for the low standby power consumption circuit of the air conditioner, the protection circuit D2 is a diode D2.

In the low standby power consumption circuit of the air conditioner described above, the third on-off switch is a single-pole double-throw switch.

As for the low standby power consumption circuit of the air conditioner, the power wiring L supplies power to the communication module through the rectification module, and a first on-off switch K1 is arranged between the power wiring L and the rectification module.

Based on the above design of the low standby power consumption circuit of the air conditioner, the utility model also proposes an air conditioner, which includes the above low standby power consumption circuit.

Compared with the prior art, the advantages and positive effects of this utility model are: on the one hand, the low standby power consumption circuit of the air conditioner of the utility model stops supplying power to the outdoor unit circuit when the air conditioner is in standby, and when starting, the power wiring L passes the signal After the power supply is supplied from the indoor unit to the outdoor unit, the circuit in the outdoor unit is started, which can realize the function of reducing power consumption. On the other hand, it also includes a detection circuit for detecting the connection state of the power wiring L and the signal line. When the detection circuit detects that the power wiring L is disconnected from the signal line, it controls the signal between the indoor communication module and the outdoor communication module. It can effectively prevent the signal line between the indoor communication module and the outdoor communication module from being connected when the power wiring and the signal line are not disconnected. The power wiring L directly applies AC power to the outdoor communication module, and the outdoor Communication module burned out. Therefore, the utility model effectively protects the working safety of circuit devices while realizing low power consumption.

After reading the detailed description of the embodiments of the utility model in conjunction with the accompanying drawings, other features and advantages of the utility model will become clearer.

Description of drawings

Fig. 1 is the circuit diagram of the air conditioner of embodiment 1 of the utility model.

Fig. 2 is the circuit diagram of the air conditioner in Embodiment 2 of the utility model.

Detailed ways

The specific implementation of the utility model will be described in detail below in conjunction with the accompanying drawings. The solution of the utility model is applicable to two modes of power supply for indoor units and outdoor units.

Specific embodiment 1:

As shown in Figure 1, this embodiment proposes a low standby power consumption circuit for an air conditioner, including an indoor unit circuit and an outdoor unit circuit, and the power wiring L for transmitting alternating current is passed between the indoor unit circuit and the outdoor unit circuit , N and the signal line C that transmits the signal are connected. When the air conditioner is working normally, the AC power supplies power to the outdoor unit circuit and the indoor unit circuit through the power wiring L and N, and the communication modules of the outdoor unit circuit and the indoor unit circuit send and receive signals through the signal line C. When the air conditioner is in standby, the power supply to the outdoor unit is completely cut off, and when the indoor unit of the air conditioner receives a start command, power is supplied to the outdoor unit to make it enter a normal working state. The circuit structure is simple and the safety is high.

The circuit of the low standby power consumption of this embodiment is described in detail below:

In the indoor unit circuit of this embodiment, the L-phase AC power is filtered by the filter module, rectified by the first rectifier module and output DC power to the switching power supply, and the switching power supply supplies power to the control module and other DC power components.

include:

The connection terminal is connected to the power wiring L, the N signal line C, and the ground line GND.

The filter module suppresses the electromagnetic interference of the alternating current input by the power wiring L and N.

The rectifier module converts the AC voltage output by the filter module into a DC voltage to supply power for the indoor unit circuit.

The half-wave rectification module, including a diode D and a resistor R, converts the AC voltage output by the filter module into a DC voltage, and supplies power to the communication module.

Or in this embodiment, only the first rectification module is provided to convert the AC voltage output by the filter module into a DC voltage, which is output to supply power for the indoor unit circuit on the one hand and power supply to the communication module on the other hand. The above two modes are all within the protection scope of the present utility model.

The switching power supply converts the DC voltage and current output by the rectifier module into the voltage and current required by the control module chip and other related electrical components, and supplies power for the control module and other related electrical components.

The control module is used to receive the remote control signal, control the switching states of the first on-off switch K1 and the second on-off switch K2, and send the remote control signal to the communication module.

The communication module is connected with the half-wave rectification module. The half-wave rectification module provides power for the communication module. The signal line C is connected with the power wiring L through the second on-off switch K2.

The first on-off switch K1 is a normally open on-off switch, which switches the connection and disconnection of the half-wave rectifier module and the signal line C;

The second on-off switch K2 is a normally open on-off switch, and switches the connection and disconnection of the power wiring L and the signal line C.

The outdoor unit circuit includes:

The connection terminal is connected to the power wiring L, N, the signal line C, and the ground line GND.

The filter module suppresses the electromagnetic interference of the alternating current input by the power wiring L and N.

The rectifier module converts the AC voltage transmitted by the filter module into a DC voltage to supply power for the switching power supply;

The switching power supply converts the DC voltage and current output by the rectifier module into the voltage and current required by the control module chip and other related electrical components, and supplies power for the control module and other related electrical components.

The control module is used to control the switching states of the third on-off switch K3 and the fourth on-off switch K4.

A communication module, which transmits and receives signals with the communication module of the indoor unit through the signal line C;

The third on-off switch K3 is a single-pole double-throw switch, which switches the connection between the signal line C, the power wiring L and the outdoor communication module.

The fourth on-off switch K4 is a normally open on-off switch for switching the connection and disconnection of the power wiring L and the outdoor unit circuit.

The protection circuit D1, which is a diode D1, is used to prevent the AC current from flowing to the signal line C and the detection circuit of the second on-off switch K2 when the fourth on-off switch K4 is closed.

The protection circuit D2 is a diode D2 for preventing an AC current from flowing from the power wiring N to the power wiring C.

The detection circuit is used to detect the connection state signal between the power wiring L and the signal line C and transmit it to the control module. When the power wiring L and the signal line C are disconnected, the control module outputs a control signal to control the switching of the third on-off switch K3 To connect with the outdoor communication module. The detection circuit of this embodiment is a photocoupler, the input end of the photocoupler is connected to the protection circuit D2 and the power wiring N, the output terminal of the photocoupler outputs the signal to the outdoor control module of the outdoor circuit, and the outdoor control module receives the photocoupler The output signal and the output control signal control the switching of the third on-off switch K3. When the input terminal of the photocoupler has a voltage input, the output terminal of the photocoupler has a high-level output signal, which is output to the control module. When the control module receives the high-level signal, the control K3 does not act. When there is no voltage input at the terminal, the output terminal of the photocoupler has no output signal, and the control module receives a low-level signal. At this time, K3 is controlled to act.

When the air conditioner is in standby, the first on-off switch K1 is in the off state, the second on-off switch K2 is in the off state, the third on-off switch K3 is connected to the power wiring L, and the fourth on-off switch K4 is in the off state. state. At this time, the outdoor unit completely cuts off the power supply to reduce the standby power consumption of the whole unit.

When the indoor unit remote control receiving probe receives the signal from the remote controller to turn on the air conditioner, the control module controls the on-off switches K1 and K2 to close, and the L phase of the AC power is transmitted to the Outdoor unit circuit. The alternating current L phase supplies power to the switching power supply through the filtering module and the rectifying module of the outdoor unit, and the switching power supply supplies power to the outdoor control module and other DC electrical components, and the outdoor control module controls the on-off switch K4 to close. After the indoor control module controls K2 to be disconnected, at this time, the photocoupler has no input, and the output terminal has no signal output, and the outdoor control module receives a low-level signal, controls the third on-off switch K3 to switch to the communication module, and the indoor unit and the outdoor unit Started working normally, communication started.

When the indoor unit remote control receiving probe receives the signal from the remote controller to turn off the air conditioner, the indoor unit communication module sends a shutdown signal to the outdoor unit communication module, and the outdoor unit control module controls the on-off switch K4 to turn off, and the on-off switch K3 switches to power On the L side of the wiring, the power supply of the outdoor unit is completely cut off. The indoor unit control module controls K1 to disconnect, disconnecting unnecessary working circuits, leaving only the indoor unit with standby power, which reduces energy consumption by more than 80% compared with existing air conditioners.

Based on the design of the low standby power consumption circuit of the air conditioner, this embodiment also proposes an air conditioner. The air conditioner includes an indoor unit circuit and an outdoor unit circuit. The specific circuits are as described above and will not be described in detail here.

Specific embodiment 2:

As shown in Figure 2, this embodiment proposes a circuit with low standby power consumption for an air conditioner. The difference from Embodiment 1 is that the detection circuit of this embodiment includes a protection circuit D2, a photocoupler and an on-off switch, a photoelectric The input end of the coupler is connected to the protection circuit D2 and the power wiring N, and the output end of the photocoupler outputs a signal to the on-off switch to control the state of the on-off switch, and one end of the on-off switch is connected to the outdoor control module to control the third on-off The signal output ends of the switch K3 are connected, and the other end is grounded. The protection circuit D2 is used to prevent the AC current from flowing from the power wiring N to the power wiring C.

The on-off switch of this embodiment is an NPN triode, the base of the triode is connected to the output terminal of the photocoupler, the collector is connected to the signal output terminal of the outdoor control module, and the emitter is grounded. Therefore, when the triode is turned on, the output signal of the outdoor control module is short-circuited to the ground, and the third on-off switch K3 will not be controlled. Only when the triode is not conducting, the signal output from the signal output terminal of the outdoor control module will control the third on-off switch K3. Therefore, the detection circuit of this embodiment can protect the outdoor communication module. When the second on-off switch K2 is closed, the photocoupler is turned on, the triode is turned on, and the output signal of the outdoor control module is short-circuited to the ground. The third on-off switch K3 is controlled; when the second on-off switch K2 is off, the photocoupler is off, the triode is not conducting, and the output signal of the outdoor control module controls the third on-off switch K3.

When the air conditioner is in standby, the first on-off switch K1 is in the off state, the second on-off switch K2 is in the off state, the third on-off switch K3 is connected to the power wiring L, and the fourth on-off switch K4 is in the off state. state. At this time, the outdoor unit completely cuts off the power supply to reduce the standby power consumption of the whole unit.

When the indoor unit remote control receiving probe receives the signal from the remote controller to turn on the air conditioner, the control module controls the on-off switches K1 and K2 to close, and the L phase of the AC power is transmitted to the Outdoor unit circuit. The alternating current L phase supplies power to the switching power supply through the filtering module and the rectifying module of the outdoor unit, and the switching power supply supplies power to the outdoor control module and other DC electrical components, and the outdoor control module controls the on-off switch K4 to close. After the indoor control module controls K2 to be disconnected, at this time, the photocoupler has no input, the output terminal has no signal output, the triode is not conducting, the outdoor control module outputs a control signal, controls the third on-off switch K3 to switch to the communication module, and the indoor unit And the outdoor unit starts to work normally, and the communication starts.

When the indoor unit remote control receiving probe receives the signal from the remote controller to turn off the air conditioner, the indoor unit communication module sends a shutdown signal to the outdoor unit communication module, and the outdoor unit control module controls the on-off switch K4 to turn off, and the on-off switch K3 switches to power On the L side of the wiring, the power supply of the outdoor unit is completely cut off. The indoor unit control module controls K1 to disconnect, disconnecting unnecessary working circuits, leaving only the indoor unit with standby power, which reduces energy consumption by more than 80% compared with existing air conditioners.

Based on the design of the low standby power consumption circuit of the air conditioner, this embodiment also proposes an air conditioner. The air conditioner includes an indoor unit circuit and an outdoor unit circuit. The specific circuits are as described above and will not be described in detail here.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit of the technical solutions of the various embodiments of the present invention. and range.

Claims (8)

1. A low standby power consumption circuit of an air conditioner, including an indoor unit circuit and an outdoor unit circuit, power wiring L and N for transmitting alternating current and a signal line C for transmitting signals between the indoor unit circuit and the outdoor unit circuit , characterized in that: the power wiring L in the indoor unit circuit is connected to the signal line C after passing through the second on-off switch K2; the power wiring L in the outdoor unit circuit is connected to the outdoor unit through the fourth on-off switch K4 power supply, the signal line C is connected to the power wiring L through the third on-off switch K3, and a protection circuit D1 is set between the signal line C and the power wiring L after passing through the third on-off switch K3, and the power A detection circuit is also connected between the wires N. When the detection circuit detects that the power wire L is disconnected from the signal wire C, it controls the third on-off switch K3 to switch to connect with the outdoor communication module. The protection circuit D1, Used to prevent the alternating current from flowing to the signal line C and the second on-off switch K2 detection circuit when the fourth on-off switch K4 is closed. 2. The low standby power consumption circuit of an air conditioner according to claim 1, wherein the protection circuit D1 is a diode D1. 3. The air conditioner low standby power consumption circuit according to claim 1, characterized in that: the detection circuit includes a protection circuit D2 and a photocoupler, and the input end of the photocoupler is connected to the protection circuit D2 and power wiring N, the output terminal of the photocoupler outputs a signal to the outdoor control module of the outdoor circuit, the outdoor control module receives the output signal of the photocoupler and outputs a control signal to control the switching of the third on-off switch K3, the protection circuit D2 Used to prevent AC current from flowing from power wiring N to power wiring C. 4. The air conditioner low standby power consumption circuit according to claim 1, characterized in that: the detection circuit includes a protection circuit D2, a photocoupler and an on-off switch, and the input end of the photocoupler is connected to the protection circuit D2 and power wiring N, the output terminal of the photocoupler outputs a signal to the on-off switch to control the state of the on-off switch, and one end of the on-off switch is in phase with the signal output terminal of the outdoor control module to control the third on-off switch K3 The other end is connected to the ground, and the protection circuit D2 is used to prevent the AC current from flowing from the power wiring N to the power wiring C. 5. The low standby power consumption circuit of an air conditioner according to claim 3 or 4, wherein the protection circuit D2 is a diode D2. 6. The low standby power consumption circuit of an air conditioner according to any one of claims 1-4, wherein the third on-off switch is a single-pole double-throw switch. 7. The air conditioner low standby power consumption circuit according to any one of claims 1-4, characterized in that: the power wiring L supplies power to the communication module through the rectification module, and the connection between the power wiring L and the rectification module A first on-off switch K1 is arranged between them. 8. An air conditioner, characterized in that the air conditioner comprises the low standby power consumption circuit according to any one of claims 1-7.