CN105337598A - Air conditioner, and circuit having low stand-by power consumption and control method thereof - Google Patents

Abstract

The invention relates to an air conditioner and its low standby power consumption circuit and control method. The low standby power consumption circuit includes an indoor unit circuit and an outdoor unit circuit, and a power distribution device for transmitting alternating current between the indoor unit circuit and the outdoor unit circuit. Lines L, N and the signal line C for transmitting signals, add an on-off switch K1 connected to the signal line C on the indoor unit, and the on-off switch K1 is connected to the rectifier module; between the signal line C of the outdoor unit and the power wiring N The induction part of the on-off switch K3 and the normally-closed on-off switch K2 are connected between them, and the power wiring L supplies power to the outdoor unit through the parallel on-off switch K4 and the on-off switch K3. Therefore, when the on-off switch K1 is closed, the DC voltage output by the rectifier module is applied to the outdoor unit through the signal line C, the sensing part of the on-off switch K3 is energized, the on-off switch K3 is closed, and the power wiring L and N supply power to the outdoor unit , thus, the present invention has high safety and simplified circuit structure.

Description

An air conditioner and its low standby power consumption circuit and control method

technical field

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

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. The circuit of an existing common air conditioner is shown in FIG. 1 . When the air conditioner is in standby mode, both the indoor unit circuit and the outdoor unit circuit of the air conditioner are powered on, 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, as shown in Figure 2, the indoor unit and the outdoor unit are composed of a power line L, a signal line S for transmitting signals, and a common line for transmitting alternating current and transmitting signals When the air conditioner is in standby, the power supply to the circuit in the outdoor unit is stopped, and when starting, the circuit in the outdoor unit is powered from the indoor unit to the outdoor unit through the signal line, and the circuit in the outdoor unit is started through the signal line when starting up. The indoor unit supplies AC power to the outdoor unit, resulting in low safety and complicated circuit structure.

Contents of the invention

The object of the present invention is to provide a circuit with low standby power consumption of an air conditioner, which solves the technical problems of high standby power consumption, low safety and complex circuit structure of the existing air conditioner circuit.

In order to solve the above-mentioned technical problems, the present invention 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 rectifier module and the on-off switch K1; the power wiring L in the outdoor unit circuit is connected to the outdoor unit To supply power, the signal line C is connected to the power wiring N through the induction part of the on-off switch K3 and the on-off switch K2. The on-off switches K1, K3, and K4 are normally open switches, and the on-off switch K2 It is a normally closed switch.

As for the low standby power consumption circuit of the air conditioner, the indoor unit circuit includes a communication module, the rectification module supplies power to the communication module, and the power wiring L and the rectification module or between the rectification module and the communication module Normally open on-off switch K1'.

In the low standby power consumption circuit of an air conditioner as described above, the on-off switch K1 is a single-pole double-throw switch, and the connection and disconnection between the communication module, the rectification module and the signal line C of the indoor unit circuit are through the on-off switch K1 switches.

In the low standby power consumption circuit of the air conditioner described above, the on-off switch K2 is a single-pole double-throw switch, and the connection and disconnection between the communication module, the power wiring N and the signal line C of the outdoor unit circuit are through the on-off switch. Switch off switch K2.

In the low standby power consumption circuit of the air conditioner described above, the rectification module is a full-wave rectification module or a half-wave rectification module.

Based on the design of the low standby power consumption circuit of the air conditioner, the present invention also proposes an air conditioner, the air conditioner includes a low standby power consumption circuit, and the low standby power consumption circuit includes an indoor unit circuit and an outdoor unit circuit. The power wiring L and N used to transmit alternating current and the signal line C for transmitting signals between the machine circuit and the outdoor unit circuit. C is connected; the power wiring L in the outdoor unit circuit supplies power to the outdoor unit through the parallel on-off switch K4 and the on-off switch K3, and the signal line C passes through the induction part of the on-off switch K3, the on-off switch K2 and the on-off switch K2. The power wiring N is connected, the on-off switches K1 , K3 , K4 are normally open switches, and the on-off switch K2 is a normally closed switch.

Based on the design of the above-mentioned air conditioner, the present invention also proposes a low standby power consumption control method of the air conditioner, as follows:

The indoor unit receives the power-on signal, controls the on-off switch K1 to close, the rectifier module is connected to the signal line C, the direct current output by the rectifier module passes through the signal line C to energize the sensing part of the on-off switch K3, the on-off switch K3 is closed, and the power distribution Lines L and N supply power to the outdoor unit circuit, the outdoor unit controls the on-off switch K4 to close, K2 opens, the sensing part of K3 loses power, K3 turns off, the indoor unit controls K1 to turn off, and the indoor unit and the outdoor unit start to communicate;

The indoor unit receives a shutdown signal, the indoor unit sends a shutdown signal to the outdoor unit, the outdoor unit controls the on-off switch K4 to be turned off, the on-off switch K2 is closed, and the indoor unit and the outdoor unit stop communicating.

Compared with the prior art, the advantages and positive effects of the present invention are: the air conditioner of the present invention adds an on-off switch K1 connected to the signal line C in the indoor unit, and the on-off switch K1 is connected to the rectifier module; The sensing part of the on-off switch K3 and the normally closed on-off switch K2 are connected between the line C and the power wiring N, and the power wiring L supplies power to the outdoor unit through the parallel connection of the on-off switch K4 and the on-off switch K3. Therefore, when the on-off switch K1 is closed, the DC voltage output by the rectifier module is applied to the outdoor unit through the signal line C, the sensing part of the on-off switch K3 is energized, the on-off switch K3 is closed, and the power wiring L and N supply power to the outdoor unit . Therefore, the present invention has high safety and simplified circuit structure.

Other features and advantages of the present invention will become more apparent after reading the detailed description of the embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a circuit diagram of a common air conditioner in the prior art.

Fig. 2 is a circuit diagram of an energy-saving air conditioner in the prior art.

Fig. 3 is a circuit diagram of the air conditioner in Embodiment 1 of the present invention.

Fig. 4 is a circuit diagram of the air conditioner in Embodiment 1 of the present invention.

Fig. 5 is a circuit diagram of an air conditioner according to Embodiment 2 of the present invention.

Fig. 6 is a circuit diagram of an air conditioner according to Embodiment 3 of the present invention.

detailed description

The specific embodiment of the present invention will be described in detail below with reference to the accompanying drawings. The solution of the present invention is applicable to two modes of power supply for indoor units and outdoor units.

Specific embodiment 1:

As shown in Figure 3, 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:

The indoor unit circuit of this embodiment includes:

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

The second rectification module is a half-wave rectification module, including a diode D and a resistor R, which converts the AC voltage output by the filter module into a DC voltage. On the one hand, it outputs to the on-off switch K1, which is used to pass the signal when the on-off switch K1 is closed. Line C energizes the sensing part of the on-off switch K3 of the outdoor unit to close the on-off switch K3; on the other hand, it supplies power to the communication module.

Alternatively, in this embodiment, only the first rectification module is provided to convert the AC voltage output by the filter module into a DC voltage, and output it to the on-off switch K1 on the one hand, for when the on-off switch K1 is closed, the signal line C is used for the on-off of the outdoor unit. The sensing part of the off switch K3 is energized, and the on-off switch K3 is closed; on the other hand, it supplies power to the communication module. Both of the above two methods are within the protection scope of the present invention.

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 supplies power to the control module and other related electrical components.

The control module is used to receive the remote control signal, control the switch state of the on-off switch K1, and send the remote control signal to the communication module.

The communication module is connected with the second rectification module to provide power for the communication module, and the signal line C is connected with the second rectification module through the on-off switch K1.

The on-off switch K1 is a normally open on-off switch, which switches the connection and disconnection of the second rectifier module 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 or the second power distribution line L2 and the common line N 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 supplies power to the control module and other related electrical components.

The control module is used to receive the control signal sent by the communication module, and control the switching states of the on-off switch K2 and the 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 on-off switch K2 is a normally closed on-off switch, which switches the connection and disconnection between the signal line C and the power wiring N, and cooperates with the on-off switch K1 of the indoor unit circuit to control the sensing part of the on-off switch K3 Power on and off, so as to control whether the power wiring L and N supply power to the outdoor unit circuit.

The sensing part of the on-off switch K3 is located between the signal line C and the power wiring N, and the action part is located between the power wiring L and the filter module of the outdoor unit. When the sensing part of K3 is energized, the control action part is turned on. An existing relay can be used as the on-off switch, and the induction part of K3 is an induction coil, as shown in FIG. 3 . Of course, the on-off switch K3 can also use other components, for example, a photocoupler, as shown in FIG. 4 . Of course, the present invention is not limited to the above two methods, and any technical solution that can achieve the above purpose falls within the protection scope of the present invention.

The on-off switch K4 is used to switch the connection and disconnection of the power wiring L and the filter module of the outdoor unit.

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

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

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 switch K1 to close, and the AC L phase is rectified by the second rectifier module to generate DC output to the on-off switch K1, and the DC power passes through the closed on-off switch. The off switch K1 and the signal line C are transmitted to the outdoor unit, and form a loop with the on-off switch K2 of the outdoor unit and the power wiring N, then the sensing part of the on-off switch K3 is energized, and the on-off switch K3 is controlled to close. The L-phase AC power supplies power to the switching power supply through the filter module and rectification module of the outdoor unit, and the switching power supply supplies power to the control module and other DC power components. The control module controls the on-off switch K2 to open, and controls the on-off switch K4 to close. Since K2 is disconnected, the sensing part of K3 is powered off, K3 is disconnected, and the indoor unit control K1 is disconnected. 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 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 indoor unit and outdoor unit stop communicating , the on-off switch K2 is switched to the closed state, and the power supply of the outdoor unit is completely cut off. The indoor unit control module 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.

Based on the design of the above-mentioned air conditioner, this embodiment also proposes a low standby power consumption control method for the air conditioner, specifically:

The indoor unit receives the power-on signal, controls the on-off switch K1 to close, the second rectification module is connected to the signal line C, and the direct current output by the second rectification module passes through the signal line C to energize the sensing part of the on-off switch K3, and the on-off switch K3 Closed, the power wiring L and N supply power to the outdoor unit circuit, the outdoor unit control on-off switch K4 is closed, K2 is turned off, the sensing part of K3 is powered off, K3 is turned off, the indoor unit control K1 is turned off, the indoor unit and the outdoor unit start communication;

The indoor unit receives a shutdown signal, the indoor unit sends a shutdown signal to the outdoor unit, the outdoor unit controls the on-off switch K4 to be turned off, the on-off switch K2 is closed, and the indoor unit and the outdoor unit stop communicating.

Specific embodiment 2:

As shown in Figure 4, this embodiment proposes a circuit with low standby power consumption for an air conditioner. The difference from Embodiment 1 is that the indoor unit circuit of this embodiment includes an on-off switch K1', which communicates with the communication module and the second The connection and disconnection between the rectification modules are switched, and the indoor control module controls the on-off state of the on-off switch K1'. When the air conditioner is in standby mode, turning off the on-off switch K1' and cutting off the power supply of the communication module can further reduce the standby power consumption of the air conditioner.

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

When the remote control receiving probe of the indoor unit receives the signal from the remote control to turn on the air conditioner, the control module controls the on-off switches K1 and K1' to close, and the L phase of the AC power is rectified by the second rectifier module to generate DC power, which is output to the communication module for power supply on the one hand. It supplies power for the communication module, and on the other hand outputs to the on-off switch K1. The DC power is transmitted to the outdoor unit through the closed on-off switch K1 and the signal line C, and forms a loop with the on-off switch K2 of the outdoor unit and the power wiring N, then The sensing part of the on-off switch K3 is energized, and the on-off switch K3 is controlled to be closed. The L-phase AC power supplies power to the switching power supply through the filter module and rectification module of the outdoor unit, and the switching power supply supplies power to the control module and other DC power components. The control module controls the on-off switch K2 to open, and controls the on-off switch K4 to close. Since K2 is disconnected, the sensing part of K3 loses power, K3 disconnects, and the indoor unit control module controls K1 and K1' to disconnect. 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 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 indoor unit and outdoor unit stop communicating , the on-off switch K2 is switched to the closed state, and the power supply of the outdoor unit is completely cut off. The indoor unit control module 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.

Based on the design of the above-mentioned air conditioner, this embodiment also proposes a low standby power consumption control method for the air conditioner, specifically:

The indoor unit receives the power-on signal, controls the on-off switch K1, K1' to close, the second rectification module is connected to the signal line C, and the direct current output by the second rectification module passes through the signal line C to energize the sensing part of the on-off switch K3, and the on-off switch K3 is turned on. The break switch K3 is closed, the power wiring L and N supply power to the outdoor unit circuit, the outdoor unit control on-off switch K4 is closed, K2 is opened, the sensing part of K3 is powered off, K3 is opened, and the indoor unit control K1, K1' is opened , the indoor unit and the outdoor unit start to communicate;

The indoor unit receives a shutdown signal, the indoor unit sends a shutdown signal to the outdoor unit, the outdoor unit controls the on-off switch K4 to be turned off, the on-off switch K2 is closed, and the indoor unit and the outdoor unit stop communicating.

Specific embodiment 3:

As shown in Figure 5, this embodiment proposes a circuit with low standby power consumption for an air conditioner. The difference from Embodiment 1 is that the on-off switch K1 of the indoor unit in this embodiment is a single-pole double-throw switch, and the indoor unit circuit The connection and disconnection between the communication module, the rectification module and the signal line C are switched by the on-off switch K1. The on-off switch K2 is a single-pole double-throw switch, and the connection and disconnection between the communication module of the outdoor unit circuit, the power wiring N and the signal line C are switched by the on-off switch K2.

When the air conditioner is in standby, the on-off switch K1 is in the OFF state, the on-off switch K2 is in the OFF state, and the on-off switches K3 and K4 are in the off state. At this time, the outdoor unit completely cuts off the power supply, and the indoor unit disconnects some unnecessary working circuits to reduce the standby power consumption of the whole unit.

In the circuit of the indoor unit, the AC L-phase is filtered by the filter module, rectified by the first rectifier module and then output DC to the switching power supply, and the switching power supply supplies power to the control module and other DC electrical components. The alternating current L phase is rectified by the second rectification module to generate direct current, and on the one hand, it is output to the communication module for power supply.

When the indoor unit remote control receiving probe receives the signal from the remote control to turn on the air conditioner, the control module controls the on-off switch K1 to switch to the ON state, and the L phase of the AC power is rectified by the second rectifier module to generate DC power, which is output to the communication module for power supply on the one hand. It supplies power for the communication module, and on the other hand outputs to the on-off switch K1. The DC power is transmitted to the outdoor unit through the closed on-off switch K1 and the signal line C, and forms a loop with the on-off switch K2 of the outdoor unit and the power wiring N, then The sensing part of the on-off switch K3 is energized, and the on-off switch K3 is controlled to be closed. The L phase of AC power supplies power to the switching power supply through the filter module and rectification module of the outdoor unit, and the switching power supply supplies power to the control module and other DC power components. The control module controls the on-off switch K2 to switch to the ON state, and controls the on-off switch K4 to close. Since K2 switches to the ON state, the sensing part of K3 loses power, K3 is disconnected, and the indoor unit control module controls K1 to switch to the OFF state. 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 module sends a shutdown signal to the outdoor unit communication module, and the outdoor unit control module controls the on-off switch K4 to be turned off, and the on-off switch K2 is switched to OFF state, the indoor unit and outdoor unit stop communicating, and the power supply of the outdoor unit is all cut off. The indoor unit control module 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.

Based on the design of the above-mentioned air conditioner, this embodiment also proposes a low standby power consumption control method for the air conditioner, specifically:

The indoor unit receives the power-on signal, controls the on-off switch K1 to switch to the ON state, the second rectification module is connected to the signal line C, and the direct current output by the second rectification module passes through the signal line C to energize the sensing part of the on-off switch K3. The on-off switch K3 is closed, the power wiring L and N supply power to the outdoor unit circuit, the outdoor unit control on-off switch K4 is closed, K2 is switched to the ON state, the sensing part of K3 is powered off, K3 is disconnected, and the indoor unit control K1 is switched to In the OFF state, the indoor unit and the outdoor unit start to communicate;

The indoor unit receives a shutdown signal, the indoor unit sends a shutdown signal to the outdoor unit, the outdoor unit controls the on-off switch K4 to be turned off, the on-off switch K2 is switched to the OFF state, and the communication between the indoor unit and the outdoor unit stops.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (7)

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, is characterized in that: in described indoor set circuit, power wiring L is by connecting with holding wire C after rectification module and on-off switch K1; In described off-premises station circuit, power wiring L is that off-premises station is powered by on-off switch K4, on-off switch K3 in parallel, described holding wire C is connected with power wiring N by the induction part of on-off switch K3, on-off switch K2, described on-off switch K1, K3, K4 are open type switch, and described on-off switch K2 is closed type switch.

2. air conditioner low standby power loss circuit according to claim 1, it is characterized in that: described indoor set circuit comprises communication module, described rectification module is powered to communication module, between described power wiring L and rectification module or be provided with open type on-off switch K1 ＇ between rectification module and communication module.

3. air conditioner low standby power loss circuit according to claim 1, it is characterized in that: described on-off switch K1 is single-pole double-throw switch (SPDT), the communication module of described indoor set circuit, the connection between rectification module and holding wire C and disconnecting is switched by on-off switch K1.

4. the air conditioner low standby power loss circuit according to claim 1 or 2 or 3, it is characterized in that: described on-off switch K2 is single-pole double-throw switch (SPDT), the communication module of described off-premises station circuit, the connection between power wiring N and holding wire C and disconnection are switched by on-off switch K2.

5. the air conditioner low standby power loss circuit according to claim 1 or 2 or 3, is characterized in that: described rectification module is full-wave rectification block or half-wave rectification block.

6. an air conditioner, is characterized in that: described air conditioner comprises the low standby power loss circuit described in claim 1-5 any one.

7. air conditioner low standby power loss control method according to claim 6, is characterized in that: described method is:

Indoor set receives starting-up signal, control on-off switch K1 to close, rectification module and holding wire C connect, and it is electric that the direct current that rectification module exports makes the induction part of on-off switch K3 obtain by holding wire C, on-off switch K3 closes, power wiring L, N are to off-premises station circuit supply, and off-premises station controls on-off switch K4 and closes, and K2 disconnects, the induction part dead electricity of K3, K3 disconnects, and indoor set control K1 disconnects, and indoor set and off-premises station start communication;

Indoor set receives off signal, and indoor set sends off signal to off-premises station, and off-premises station controls on-off switch K4 and disconnects, and on-off switch K2 closes, and indoor set and off-premises station stop communication.