CN211701611U

CN211701611U - Multi-power-supply parallel electric control device and purifier

Info

Publication number: CN211701611U
Application number: CN202020176266.2U
Authority: CN
Inventors: 尤今; 尤毅
Original assignee: Kelan Technics Environmental Products Co ltd
Current assignee: Kelan Technics Environmental Products Co ltd
Priority date: 2020-02-17
Filing date: 2020-02-17
Publication date: 2020-10-16
Anticipated expiration: 2030-02-17

Abstract

The utility model discloses a multi-power-supply parallel electric control device and purifier, which comprises a bus, a plurality of control power supplies and an isolation circuit, wherein the level input end and the level output end of each control power supply are in communication connection with the bus through the isolation circuit; the electric control device is arranged in the purifier; through the arrangement, under the condition that a plurality of control power supplies work in parallel, even if only part of the control power supplies detect spark flashover, the power supplies which do not detect the spark flashover can be forced to enter an arc extinguishing processing program by utilizing the synchronous characteristic of signals, so that the reliability and the rapidness of arc extinguishing are ensured.

Description

Multi-power-supply parallel electric control device and purifier

Technical Field

The utility model relates to a power control field, in particular to electrically controlled device and clarifier.

Background

In the application of the power supply of the device, a plurality of power supplies are often required to be connected in parallel so as to control the on or off of the plurality of power supplies simultaneously and realize the on-off control of the plurality of power supplies or the device. When a plurality of control power supplies are operated in parallel, if spark flashover occurs, only part of the power supplies are likely to be detected, and the power supplies which do not detect the spark flashover continue to work normally, so that arc extinction failure is caused.

It is seen that improvements and enhancements to the prior art are needed.

SUMMERY OF THE UTILITY MODEL

In view of the foregoing disadvantages of the prior art, an object of the present invention is to provide an electrical control device and a purifier connected in parallel with multiple power supplies, which are capable of forcing the power supply without spark flashover into the arc extinguishing processing procedure, thereby ensuring reliable and rapid arc extinguishing.

In order to achieve the purpose, the utility model adopts the following technical proposal:

the electric control device with multiple parallel power supplies comprises a bus, a plurality of control power supplies and an isolation circuit, wherein the level input end and the level output end of each control power supply are in communication connection with the bus through the isolation circuit.

The electric control device with the multiple parallel power supplies is characterized in that the isolation circuit comprises a first photoelectric coupler and a second photoelectric coupler, the level input end is connected with a light emitter of the first photoelectric coupler, and a light receiver of the first photoelectric coupler is connected with the bus through a synchronous terminal; the level output end is connected with a light receiver of a second photoelectric coupler, and a light emitter of the second photoelectric coupler is connected with the synchronous terminal.

The electric control device with the multiple parallel power supplies is characterized in that the level output end is connected with a pull-up unit.

The multi-power-supply parallel electric control device comprises a pull-up unit and a pull-up unit, wherein the pull-up unit comprises a pull-up resistor, one end of the pull-up resistor is connected with a level output end, and the other end of the pull-up resistor is connected with a pull-up voltage.

The electric control device with the multiple parallel power supplies is characterized in that the level input end is connected with the light emitter of the first photoelectric coupler through a protection resistor, and the two ends of the light receiver of the first photoelectric coupler and the two ends of the light emitter of the second photoelectric coupler are connected with the synchronous terminal through the protection resistor.

The electric control device with the multiple power supplies connected in parallel is characterized in that the isolation circuit is a magnetic isolation module, and the magnetic isolation module comprises a magnetic isolation chip.

The purifier comprises a shell and an electric field assembly arranged in the shell, wherein the electric field assembly is in power supply control connection through the electric control device with multiple power supplies connected in parallel.

Has the advantages that:

the utility model provides a parallelly connected electrically controlled device of many powers and clarifier, compare prior art, pass through bus connection through setting up a plurality of control power, the level signal that makes the control power receipt follows the bus and changes, realize the synchronization of signal, thereby under the parallelly connected condition of many powers, when taking place the spark flashover, make the power that does not detect the spark flashover also force to get into the arc extinguishing procedure, guarantee the reliable and rapid of arc extinguishing, realize the electric isolation through isolating circuit between each power in addition, play protection circuit's effect.

Drawings

Fig. 1 is a connection block diagram of an electric control device with multiple parallel power supplies according to the present invention.

Fig. 2 is a schematic diagram of an embodiment of an electric control device with multiple power supplies connected in parallel according to the present invention.

Fig. 3 is a schematic diagram of the working logic of the electric control device with multiple parallel power supplies according to the present invention.

Description of the main element symbols: 100-bus, 110-synchronous terminal, 200-control power supply, 210-level input terminal, 220-level output terminal, 230-pull-up unit and 300-isolation circuit.

Detailed Description

The utility model provides a parallelly connected electrically controlled device of many powers and clarifier, for making the utility model discloses a purpose, technical scheme and effect are clearer, more clear and definite, and it is right that the following refers to the drawing and the embodiment is lifted the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of the invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other suitable relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-2, the present invention provides an electric control device with multiple parallel power supplies, which includes a bus 100, a plurality of control power supplies 200 and an isolation circuit 300, wherein a level input end 210 and a level output end 220 of the control power supplies 200 are connected to the bus 100 through the isolation circuit 300. It should be noted that the control power supplies are connected to the ground.

Referring to fig. 1-3, in practical applications, under normal operation, the level input end 210 of each control power supply 200 is kept in a low level state, and the bus 100 is also set to a low level state following each level input end 210, and at this time, the level output end 220 of each control power supply 200 receives a high level signal. When any one of the control power supplies 200 detects a spark flashover, the level input end 210 of the control power supply 200 inputs a high level signal and executes an arc extinguishing processing program, the bus 100 sets a high level signal following the control power supply 200, and the level output end 220 of each control power supply 200 receives a low level signal, so that the rest of the control power supplies 200 which do not detect the spark flashover are forced to enter the arc extinguishing processing program. The control power supply 200 is not restarted until all the control power supplies 200 complete the arc extinguishing process, and the level input terminal 210 of the control power supply 200 is also switched from the high level signal to the low level signal. The power supply which does not detect spark flashover is forced to enter the arc extinguishing processing program by utilizing the signal synchronization of the circuit, thereby ensuring the reliability and rapidness of arc extinguishing.

Referring to fig. 2, in one embodiment, the isolation circuit 300 is electrically isolated in a photoelectric isolation manner, and includes a first photocoupler and a second photocoupler, the level input end 210 is connected to a light emitter of the first photocoupler, and a light receiver of the first photocoupler is connected to the bus 100 through the synchronous terminal 110; the level output terminal 220 is connected to a light receiver of a second photo coupler, and a light emitter of the second photo coupler is connected to the synchronization terminal 110.

Preferably, in some embodiments, the level input terminal 210 is connected to the light emitter of the first photocoupler through a protection resistor, both ends of the light receiver of the first photocoupler and the light emitter of the second photocoupler are connected to the synchronous terminal 110 through protection resistors, and the protection resistors perform current limiting protection. As shown in FIG. 2, in the present embodiment, the protection resistors are R1-5 and R7-11.

Specifically, referring to fig. 2, in the present embodiment, the first photo-couplers are U1 and U3, and the second photo-couplers are U2 and U4, which are described by the group of the first photo-coupler U1 and the second photo-coupler U2. The connection mode is as follows: the isolation circuit 300 comprises a photoelectric coupler U1 and a photoelectric coupler U2, wherein a level input end 210 is connected with one end of a light emitter of the photoelectric coupler U1 through a protection resistor R1, and the other end of the photoelectric coupler U1 is grounded; one end of the photo detector of the photo coupler U1 is connected to the current voltage 12V through a protection resistor R2, and the other end of the photo detector of the photo coupler U1 is connected to the bus 100 through a synchronization terminal 110. One end of the light emitter of the photocoupler U2 is connected with the synchronous terminal 110 through a protection resistor R4, and the other end of the light emitter of the photocoupler U2 is grounded through a protection resistor R5; one end of the light receiver of the photocoupler U2 is connected to the level output terminal 220, and the other end of the light receiver of the photocoupler U2 is grounded. Through the above arrangement, the photoelectric isolation between the respective control power supplies 200 is realized.

Note that the bus 100 is a SYN bus 100, and the supply voltage is preferably 12V dc voltage. Additionally, as a preference, the first photocoupler and the second photocoupler are preferably of EL817 in type.

Referring to fig. 2-3, further, in some embodiments, the level output terminal 220 is connected to a pull-up unit 230, and specifically, the pull-up unit 230 includes a pull-up resistor, one end of the pull-up resistor is connected to the level output terminal 220, and the other end of the pull-up resistor is connected to a pull-up voltage; therefore, the feedback signal output by the bus 100 is inverted, and the reliability of the circuit signal is improved. In this embodiment, as shown in fig. 2, a 3.3V dc voltage is used as the pull-up voltage, where R6 and R12 are pull-up resistors.

In another embodiment, the isolation circuit 300 is provided as a magnetic isolation module, and the magnetic isolation module includes a magnetic isolation chip, and the magnetic isolation chip is electrically isolated in a magnetic isolation manner, wherein the magnetic isolation chip is preferably an ADI brand magnetic isolation chip.

The utility model also provides a purifier, which comprises a shell and an electric field component arranged in the shell, wherein the electric field component is connected with the electric control device in parallel through the plurality of power supplies in a power supply control way; the electric control device improves the reliability of the product on spark flashover treatment, thereby improving the product quality; since the electrical control device with multiple parallel power supplies is described in detail above, it is not described herein again.

It should be understood that the technical solutions of the present invention and the inventive concept thereof can be equally replaced or changed by those skilled in the art, and all such changes or substitutions should fall within the protection scope of the present invention.

Claims

1. The electric control device with multiple parallel power supplies is characterized by comprising a bus, a plurality of control power supplies and an isolation circuit, wherein the level input end and the level output end of each control power supply are in communication connection with the bus through the isolation circuit; the level output end is connected with a pull-up unit.

2. The electric control device with multiple parallel power supplies according to claim 1, wherein the isolation circuit comprises a first photocoupler and a second photocoupler, the level input end is connected with a light emitter of the first photocoupler, and a light receiver of the first photocoupler is connected with the bus through a synchronous terminal; the level output end is connected with a light receiver of a second photoelectric coupler, and a light emitter of the second photoelectric coupler is connected with the synchronous terminal.

3. The electric control device with multiple parallel power supplies according to claim 2, wherein the pull-up unit comprises a pull-up resistor, one end of the pull-up resistor is connected with the level output end, and the other end of the pull-up resistor is connected with a pull-up voltage.

4. The electrical control device with multiple parallel power supplies according to claim 3, wherein the level input terminal is connected to the light emitter of the first photocoupler through a protection resistor, and both ends of the light receiver of the first photocoupler and the light emitter of the second photocoupler are connected to the synchronous terminal through protection resistors.

5. The electrical control device with multiple parallel power supplies according to claim 1, wherein the isolation circuit is provided as a magnetic isolation module, and the magnetic isolation module comprises a magnetic isolation chip.

6. A purifier, comprising a housing and an electric field assembly disposed in the housing, the electric field assembly being electrically connected by a multi-power parallel electric control device as claimed in any one of claims 1 to 5.