CN207200368U - A kind of air conditioner power transfer device and air conditioner - Google Patents

Abstract

An air conditioner power switching device, comprising a switch, the switch includes a first input terminal, a second input terminal and an output terminal; when the commercial power supply is normal, the commercial power supply passes through the first input terminal terminal and the output terminal are connected to the power supply circuit of the air conditioner; when the commercial power supply is interrupted, the battery is connected to the power supply circuit of the air conditioner through the second input terminal and the output terminal. At the same time, it also discloses an air conditioner adopting the power switching device of the air conditioner. The air conditioner power switching device disclosed by the utility model does not require multiple manual operations by the user during the entire operation process, can fully utilize the capacity of the battery pack, and has the advantages of high automation and good user experience.

Description

Air conditioner power switching device and air conditioner

technical field

The utility model relates to the technical field of air conditioning, in particular to an air conditioner power switching device and an air conditioner comprising the air conditioner power switching device.

Background technique

In some countries and regions with relatively backward economies, such as Ethiopia in Africa and Pakistan in Asia, the coverage rate of power users is only 20% to 40%, and the quality of power supply is also very poor, with large fluctuations in power supply voltage and frequency, and waveform distortion. Seriously, at the same time the power supply may be interrupted at any time. Ordinary household appliances, such as lighting equipment, are generally powered by batteries.

However, for hospitals, bank clearing centers, civil aviation, meteorology and other departments, air conditioners are also required to maintain normal work at the same time, and unstable power supply has seriously affected the use of air conditioners. For the air conditioner with backup power supply, the user must frequently operate the backup power supply when the mains power is interrupted, and the power supply interval is long. Moreover, if a power failure occurs at night, the user may be asleep, and it is difficult to restore the backup power supply in time. to operate.

Contents of the invention

The utility model provides an air conditioner power switching device to overcome the influence of unstable power supply on the use of the air conditioner.

An air conditioner power switching device, comprising a switch, the switch includes a first input terminal, a second input terminal and an output terminal; when the commercial power supply is normal, the commercial power supply passes through the first input terminal terminal and the output terminal are connected to the power supply circuit of the air conditioner; when the commercial power supply is interrupted, the battery is connected to the power supply circuit of the air conditioner through the second input terminal and the output terminal.

Further, it also includes a comparison circuit, the output end of the comparison circuit is connected to the control end of the switch, and the input end of the comparison circuit is connected to the mains power supply; when the mains power supply is normal, the output level of the comparison circuit is The selection signal is sent to the control terminal of the switch.

Preferably, when the commercial power supply is normal, the comparison circuit outputs a high level to the control terminal of the switch; when the commercial power supply is interrupted, the comparison circuit outputs a low level to the switch The control terminal of the switch.

Further, an inverter is also included, the input end of the inverter is connected to the storage battery, and the output end of the inverter is connected to the second input end.

Further, the changeover switch is a dual switch, one of the selected terminals of the dual switch is the first input terminal, and the other selected terminal is the second input terminal.

Further, the changeover switch is a relay, and the coil of the relay is connected to the mains power supply or the output end of the comparison circuit; one end of a normally open contact of the relay is connected to the mains power supply, and the other end is connected to the power supply of the air conditioner. circuit; one end of a normally closed contact of the relay is connected to the storage battery, and the other end is connected to the power supply circuit of the air conditioner.

Furthermore, the relay is arranged outside the housing of the air conditioner.

Preferably, the relay is set in the air conditioner socket.

Furthermore, the relay is set in the air conditioner.

The air conditioner power switching device disclosed by the utility model does not require multiple manual operations by the user during the entire operation process, and has the advantages of high degree of automation and good user experience.

At the same time, an air conditioner is also disclosed, including an air conditioner power switching device, the air conditioner power switching device includes a switch, and the switch includes a first input end, a second input end and an output end; when the commercial power supply Normally, the commercial power supply is connected to the power supply circuit of the air conditioner through the first input terminal and the output terminal; when the commercial power supply is interrupted, the storage battery is connected to the second input terminal and the output terminal Air conditioner power supply circuit.

The air conditioner disclosed by the utility model can automatically switch to the storage battery for power supply when the mains power supply is abnormal, and the air conditioner can keep running without stopping and extend to a sufficient running time.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the appended drawings in the following description The drawings are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings on the premise of not paying creative labor.

Fig. 1 is a structural schematic block diagram of the first embodiment of the air conditioner power switching device disclosed by the utility model;

Fig. 2 is a schematic diagram of the first circuit structure of the switch in the air conditioner power switching device shown in Fig. 1;

Fig. 3 is a schematic diagram of the second circuit structure of the switch in the power switching device of the air conditioner shown in Fig. 1;

FIG. 4 is a schematic diagram of a third circuit structure of a switch in the power switching device for an air conditioner shown in FIG. 1 .

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the utility model more clear, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Refer to FIG. 1 for a schematic block diagram of the structure disclosed in the first embodiment of the air conditioner power switching device disclosed in the present invention. As shown in the figure, the air conditioner power switching device disclosed in the utility model includes a mains power supply 1 , a storage battery 2 and a switch 5 . The mains power supply 1 is a mains power supply 1 with a nominal value of 220V, which provides a mains power supply signal. The capacity of storage battery 2 is advisable enough to make air conditioner 6 work several hours. The air conditioner power switching device is preferably provided with a switch button (not shown in the figure). When the switch button is pressed, the air conditioner power switching device is in a standby state, and the mains power supply 1 or the battery 2 can pass through the air conditioner power switching device. For air conditioner 6 power supply. In areas where mains power supply 1 may be interrupted or during a certain period of time, the user can actively press the switch button to make the air conditioner power switching device in a standby state. Switch between the power source 1 and the storage battery 2 to supply power to the air conditioner 6 .

Specifically, the switch 5 includes a first input terminal I1, a second input terminal I2 and an output terminal P0. When the mains power supply 1 is normal, the mains power supply 1 is connected to the power supply circuit of the air conditioner 6 through the first input terminal I1 and the output terminal P0 of the switch 5 . When the commercial power supply 1 is interrupted, the battery 2 is connected to the power supply circuit of the air conditioner 6 through the second input terminal I2 and the output terminal P0. If the mains power supply 1 changes between the normal state and the interrupted state, as long as the power of the battery 2 is sufficient, the air conditioner power switching device can automatically control the use of the mains power supply 1 or the battery 2 to supply power without the need for active operation by the user .

More specifically, the changeover switch 5 can be realized by a two-way changeover switch or a relay. Referring to Fig. 2, it is a schematic circuit diagram of an air conditioner power switching device using a two-way transfer switch. As shown in the figure, the air conditioner power switching device has two selected terminals, which are respectively used as the first input terminal I1 and the second input terminal I2. The control terminal C0 of the dual switch is connected to the output terminal P0 of the comparison circuit 4 . The input end of the comparison circuit 4 is connected to the mains power supply 1 . The front end of the comparison circuit 4 is also provided with a sampling circuit, a transformer and a rectification and filtering circuit. The method adopted for the sampling processing of the alternating current is the method disclosed in the prior art, and will not be repeated here. The sampling circuit, the transformer and the rectification and filtering circuit convert the mains power supply 1 into a level signal and input it to one input terminal of the comparison circuit 4, and the other input terminal of the comparison circuit 4 is a reference level. When the mains power supply 1 is normal, the comparison circuit 4 outputs a high-level signal to the control terminal C0 of the switch 5, and the mains power supply 1 is connected to the power supply circuit of the air conditioner 6 through the first input terminal I1 and the output terminal P0 and provides the air conditioner 6 power supply. When the mains power supply 1 is interrupted, the comparison circuit 4 outputs a low-level signal to the control terminal C0 of the switching unit, the two-way transfer switch operates, and the battery 2 is connected to the power supply circuit of the air conditioner 6 through the second input terminal I2 and the output terminal P0. For air conditioner 6 power supply. The level selection signal output by the comparison circuit 4 may change according to the reference level, and is not limited to a high level signal. The comparator 4 can be a comparator 4 chip produced and sold by other similar manufacturers such as Texas Instruments' LMV761, LMH7322, TLV3691, and is not limited here.

The switch 5 can also be a relay. When a relay is used as the switch 5, the coil of the relay is connected to the mains power supply 1 or the output terminal P0 of the comparison circuit 4. If it is connected to the mains power supply 1, it is also necessary to connect an appropriate transformer and rectification filter circuit. When the mains power supply 1 is normal, the relay coil is energized to further drive the contact to act. For the relay, there are two ways to set it up. As shown in FIG. 3 , the first way is to set it outside the housing of the air conditioner 6 , preferably in the socket to achieve a more beautiful effect. One end of the normally open contact K1 of the relay is connected to the mains power supply 1 as the first input end I1, the other end is connected to the power supply circuit of the air conditioner 6, one end of the normally closed contact K2 of the relay is connected to the battery 2, and the other end is connected to the power supply of the air conditioner 6 circuit. The mains power supply 1 is normal, the relay coil is energized, the normally open contact K1 is closed, the normally closed contact K2 is disconnected, and the air conditioner 6 is powered by the mains power supply 1 . If the mains power supply 1 is interrupted, the relay returns to its initial state. The normally open contact K1 is open, and the normally closed contact K2 is closed. As shown in Figure 4, the second type is set in the housing of the air conditioner 6, one end of the normally open contact K1 of the relay is connected to the mains power supply 1, the other end is connected to the power supply circuit of the air conditioner 6, and the normally closed contact K2 of the relay One end is connected to the battery 2, and the other end is connected to the power supply circuit of the air conditioner 6. The mains power supply 1 is normal, the relay coil is energized, the normally open contact K1 is closed, the normally closed contact K2 is disconnected, and the air conditioner 6 is powered by the mains power supply 1 . If the mains power supply 1 is interrupted, the relay returns to its initial state. The normally open contact K1 is disconnected, and the normally closed contact K2 is closed.

When the battery 2 is used for power supply, the output terminal of the battery 2 is connected to the input terminal of the inverter 3, and the output terminal of the inverter 3 is connected to the second input terminal I2.

The air conditioner power switching device disclosed in the utility model does not require multiple manual operations by the user during the entire operation process, and can form an optimal solution that is beneficial to the operation of the air conditioner, fully utilize the capabilities of the battery pack, and have a high degree of automation and user experience. good points.

The utility model also provides an air conditioner using the above air conditioner power switching device. For the structure of the air conditioner power switching device, please refer to the detailed description and drawing of the above embodiment and the accompanying drawings, and will not be repeated here. The air conditioner adopting the above-mentioned air conditioner power switching device can achieve the same technical effect.

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 (10)

1. A kind of air conditioner power switching device, it is characterized in that, comprises switch, and described switch comprises first input end, second input end and output end; When mains power supply is normal, described mains power supply passes through The first input end and the output end are connected to the power supply circuit of the air conditioner; when the commercial power supply is interrupted, the battery is connected to the power supply circuit of the air conditioner through the second input end and the output end. 2. The air conditioner power switching device according to claim 1, further comprising a comparison circuit, the output end of the comparison circuit is connected to the control end of the switch, and the input end of the comparison circuit is connected to the commercial power supply; When the commercial power supply is normal, the comparison circuit outputs a level selection signal to the control terminal of the switch. 3. The air conditioner power switching device according to claim 2, characterized in that, when the commercial power supply is normal, the comparison circuit outputs a high level to the control terminal of the switch; When the power supply is interrupted, the comparison circuit outputs a low level to the control terminal of the switch. 4. The air conditioner power switching device according to claim 3, further comprising an inverter, the input end of the inverter is connected to the storage battery, and the output end of the inverter is connected to the second input end. 5. The air conditioner power switching device according to any one of claims 1 to 4, characterized in that, the switch is a two-way changeover switch, and one of the selected ends of the two-way changeover switch is the first input end , and the other selected terminal is the second input terminal. 6. The air conditioner power switching device according to any one of claims 2 to 4, wherein the switch is a relay, and the coil of the relay is connected to the mains power supply or the output terminal of the comparison circuit; the relay One end of the normally open contact of the relay is connected to the mains power supply, and the other end is connected to the power supply circuit of the air conditioner; one end of the normally closed contact of the relay is connected to the battery, and the other end is connected to the power supply circuit of the air conditioner. 7. The power switching device for an air conditioner according to claim 6, wherein the relay is arranged outside the housing of the air conditioner. 8. The air conditioner power switching device according to claim 7, wherein the relay is arranged in the air conditioner socket. 9. The air conditioner power switching device according to claim 6, wherein the relay is set in the air conditioner. 10. An air conditioner, further comprising the air conditioner power switching device according to any one of claims 1 to 8.