CN204392215U - A kind of air conditioner and low standby power loss circuit thereof - Google Patents

Abstract

The utility model relates to an air conditioner and its low standby power consumption circuit. The utility model stops supplying power to the outdoor unit circuit during standby; Start the outdoor unit circuit after power supply. At this time, the signal line C is used as the power wiring N. After starting the outdoor unit circuit, the signal line C is switched to connect with the outdoor communication circuit for signal transmission, which can reduce power consumption. . At the same time, because the connection between the power wiring N and the signal line C is used for switching, even if the on-off switch is damaged or the switching sequence is wrong, the power wiring N will not cause damage to the outdoor communication circuit, and there is no potential safety hazard.

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 C to start the outdoor unit circuit. However, if the indoor communication circuit and the outdoor communication circuit are connected when the signal line C is not disconnected from the power wiring L, the outdoor communication circuit is likely to be burned, posing 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 circuits.

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 described circuit includes:

The second on-off switch K2 is arranged in the indoor unit circuit, and switches the connection and disconnection between the signal line C and the power wiring N;

The third on-off switch K3 is arranged in the outdoor unit circuit, and switches the connection and disconnection of the signal line C with the power wiring N and the outdoor communication circuit;

The fourth on-off switch K4 is arranged on the outdoor unit circuit, and switches the connection and disconnection of the power wiring N and the outdoor unit circuit;

The indoor controller is used to control the on-off state of the second on-off switch K2;

The outdoor controller is used to control the switching state of the third on-off switch K3 and the on-off state of the fourth on-off switch K4;

When the signal line C is connected to the power wiring N, the outdoor control circuit supplies power to the outdoor control circuit through the power wiring L and the signal line C, and after the outdoor control circuit supplies power, it switches to Power is supplied to the outdoor controller through the power wiring L and the power wiring N.

The low standby power consumption circuit of the air conditioner is characterized in that: the third on-off switch is a single-pole double-throw switch.

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 the utility model are: the low standby power consumption circuit of the air conditioner of the utility model can reduce power consumption, and there is no potential safety hazard. When the air conditioner is in standby, it stops supplying power to the outdoor unit circuit; when starting, the power wiring N supplies power to the outdoor unit through the signal line C and power wiring L, and then starts the outdoor unit circuit. At this time, the signal line C is used as the power wiring When N is used, after the outdoor unit circuit is started, the signal line C is switched to connect with the outdoor communication circuit for signal transmission, which can realize the function of reducing power consumption. At the same time, because the connection between the power wiring N and the signal line C is used for switching, even if the on-off switch is damaged or the switching sequence is wrong, the power wiring N will not cause damage to the outdoor communication circuit, and there is no potential safety hazard.

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 the specific embodiment 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.

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 circuit between the outdoor unit circuit and the indoor unit circuit transmits and receives 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 alternating currents L and N are filtered by the filter circuit, rectified by the first rectification circuit and then output direct current to the switching power supply, which supplies power to the controller and other DC power devices.

The indoor unit circuit includes:

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

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

The first rectification circuit converts the AC voltage output by the filter circuit into a DC voltage to supply power to the indoor unit circuit.

The second rectification circuit is a half-wave rectification circuit, which includes a diode D and a resistor R, and converts the AC voltage output by the filter circuit into a DC voltage to supply power to the communication circuit.

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

Switching power supply converts the DC voltage and current output by the rectifier circuit into the voltage and current required by the controller and other related electrical devices, and supplies power for the controller and other related electrical devices.

The indoor controller is used to receive the remote control signal, control the switch state of the second on-off switch K2, and send the remote control signal to the communication circuit.

The indoor communication circuit is connected with the second rectification circuit, the second rectification circuit provides power for the indoor communication circuit, and the indoor communication circuit communicates with the outdoor communication circuit through 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 N and the signal line C.

In the outdoor unit circuit of this embodiment, the AC power L and N are filtered by the filter circuit, rectified by the rectifier circuit, and output DC power to the switching power supply, and the switching power supply supplies power to the controller and other DC power devices.

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 circuit suppresses the electromagnetic interference of the alternating current input by the power wiring L and N.

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

Switching power supply converts the DC voltage and current output by the rectifier circuit into the voltage and current required by the controller and other related electrical devices, and supplies power for the controller and other related electrical devices.

The outdoor controller is used to output control signals, control the on-off state of the fourth on-off switch K4, and control the switching state of the third on-off switch K3.

The outdoor communication circuit transmits and receives signals with the indoor communication circuit through the signal line C;

The fourth on-off switch K4 is a normally open on-off switch, which switches on and off the power wiring N in the outdoor unit circuit.

The third on-off switch K3 is a single-pole double-throw switch, its operating part is connected to the signal line C, and the operating part switches between the power wiring N and the indoor communication circuit.

When the air conditioner is in standby, the fourth on-off switch K4 is in the off state, at this time, the outdoor unit completely cuts off the power supply, reducing 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 controller controls the second on-off switch K2 to close, and the power wiring L and N form a power supply loop to supply power to the outdoor unit. The alternating current L phase supplies power to the switching power supply through the filter circuit and rectification circuit of the outdoor unit, and the switching power supply supplies power to the controller and other DC electrical components. The controller controls the fourth on-off switch K4 to close, controls the third on-off switch K3 to switch to the outdoor communication circuit, at this time, the indoor unit and the outdoor unit start 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 circuit sends a shutdown signal to the outdoor unit communication circuit, and the outdoor unit controller controls the third on-off switch to switch to connect with the power wiring N , the indoor unit and the outdoor unit stop communicating, the fourth on-off switch K4 is turned off, and the power supply of the outdoor unit is all cut off. The indoor unit controller disconnects 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 (3)

1. an air conditioner low standby power loss circuit, comprise indoor set circuit and off-premises station circuit, the holding wire C for power wiring L, N and signal transmission of transmitting alternating current between indoor set circuit and off-premises station circuit, it is characterized in that, described circuit comprises:

Second on-off switch K2, is arranged on described indoor set circuit, switches the connection between described holding wire C and described power wiring N and disconnection;

3rd on-off switch K3, is arranged on described off-premises station circuit, switches the connection of described holding wire C and described power wiring N, outdoor communication circuit and disconnection;

4th on-off switch K4, is arranged on described off-premises station circuit, switches the connection of power wiring N and described off-premises station circuit and disconnection;

Indoor controller, for controlling the on off operating mode of the second on-off switch K2;

Outdoor controller, closes the switching state of K3 for controlling the 3rd break-make card, control the on off operating mode of the 4th on-off switch K4;

When described holding wire C and described power wiring N couples together, described outside control circuit is that described outdoor control circuit is powered through described power wiring L and holding wire C, after outdoor control circuit is powered, switching to through described power wiring L and power wiring N is that outdoor controller is powered.

2. air conditioner low standby power loss circuit according to claim 1, is characterized in that, described 3rd on-off switch is single-pole double-throw switch (SPDT).

3. an air conditioner, is characterized in that, described air conditioner comprises the low standby power loss circuit described in claim 1-2 any one.