CN203339950U

CN203339950U - Elevator control power supply device

Info

Publication number: CN203339950U
Application number: CN201320419010XU
Authority: CN
Inventors: 张方爽
Original assignee: Tianjin Haoya Science & Technology Development Co ltd
Current assignee: Tianjin Haoya Science & Technology Development Co ltd
Priority date: 2013-07-15
Filing date: 2013-07-15
Publication date: 2013-12-11
Anticipated expiration: 2023-07-15

Abstract

The utility model discloses an elevator control power supply device, wherein a control power supply composed of an industrial frequency transformer is replaced by an isolation-type switching power supply; an alternating-current power supply for elevator power supply is connected to the input end of the isolation-type switching power supply, and subjected to rectification and filter, and DC/DC (direct current/direct current) conversion; and a multi-path direct-current power supply is connected to the output end of the isolation-type switching power supply, the '-' end of the multi-path direct-current power supply is grounded, and the '+' end of the multi-path direct-current power supply is connected with the safety circuit, the contact control circuit, the microcomputer control circuit and a brake circuit of an elevator via a fuse respectively. The device is reduced in weight and volume, simplified in structure, and increased in efficiency, thus contributing to weight lightening and miniaturization for an elevator control system.

Description

A kind of elevator is controlled supply unit

Technical field

The utility model relates to the electric equipment of elevator, specifically, is that a kind of elevator of in elevator control cabinet, elevator control circuit being powered is controlled supply unit.

Background technology

The elevator of prior art is controlled supply unit normally by the electrical source of power input of elevator, by Industrial Frequency Transformer, rectifier etc., provides multichannel output.The control power supply of OTIS3000 elevator for example, AC110V is to safety circuit and contactor, Control power supply; DC30V controls power supply to microcomputer; DC125V powers to brake; DC24V, 15V, 6V power to control circuits such as demonstration, calls.The apparatus for controlling elevator formed at elevator industry extensive use integrated controller in recent years, it is controlled power supply and is comprised of Switching Power Supply, Industrial Frequency Transformer, rectifier etc., output DC24V, DC110V, AC110V, advantage is to have met the control circuit power demands, and realized the isolation with civil power, be convenient to implement the short-circuit protection of control circuit; Weak point is that Industrial Frequency Transformer volume and weight are larger, is unfavorable for miniaturization, the lightness of elevator control cabinet.

Summary of the invention

The purpose of this utility model is in order to overcome the deficiencies in the prior art, provides a kind of elevator based on isolation type switching power supply to control supply unit.

The utility model solves the technical scheme that its technical problem adopts: elevator is controlled supply unit and is comprised input, output device and the voltage conversion device that power supply is provided to elevator control circuit, it is isolation type switching power supply that described elevator is controlled supply unit, has replaced the control power supply be comprised of Industrial Frequency Transformer; The AC power of its input termination elevator supply, through rectifying and wave-filtering, DC/DC conversion, output is multi-channel dc power supply, is linked into respectively in the control circuit of elevator.

Described elevator is controlled supply unit, can be output as DC110V, DC24V by the input of AC220V civil power, DC110V power supply "-" end ground connection wherein, and "+" end is through safety circuit, contactor control circuit, the brake circuit of fuse access elevator; DC24V power supply "-" end ground connection, "+" end connects the microcomputer control circuit of elevator through fuse.

Described elevator is controlled supply unit, can be also to be linked into the control circuit of elevator by isolation type switching power supply, is accessed brake circuit after rectification by AC power.

The utility model compared with prior art, have the following advantages and beneficial effect: the elevator that adopts the isolation type switching power supply replacement to be comprised of Industrial Frequency Transformer is controlled power supply, meeting under the power demands prerequisite of elevator control circuit, weight and volume that elevator is controlled supply unit reduce, designs simplification, efficiency improves, and temperature rise reduces, and is conducive to lightness, the miniaturization of apparatus for controlling elevator.

The accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is the structure chart of first embodiment of the utility model.

Fig. 2 is the structure chart of second embodiment of the utility model.

1.AC input terminal in figure, 2. rectifier, 3. electric capacity, 4.DC/DC transducer, 5.DC110V and DC24V lead-out terminal, 6. fuse, 7. fuse, 8. fuse, 9. fuse, 10. fuse, 11. microcomputer control circuits, 12. safety circuits, 13. control relay circuit, 14. brake circuits, 15. rectifiers, 16. fuse, the 17.DC220V lead-out terminal.

Embodiment

In Fig. 1, AC power is by AC input terminal (1), through fuse (10) access rectifier (2), be converted to direct current, become the input of DC/DC transducer (4) after electric capacity (3) filtering, its DC110V and DC24V lead-out terminal (4) are linked in the control circuit of elevator through fuse (6), (7), (8), (9) respectively.The control circuit of elevator generally includes microcomputer control circuit (11), contactor control circuit (13), safety circuit (12), and brake circuit (14) etc.Electric elements operating voltage in the brake circuit of the present embodiment, contactor control circuit and safety circuit is chosen to be DC110V, and micro-processor controlled operating voltage is DC24V.The apparatus for controlling elevator of prior art is used the alternating current operation contactor usually, and this circuit is selected DC operation contactor, and to adapt to the power supply of Switching Power Supply, its running noises lowers, and price has increased slightly.

Switching Power Supply has become a kind of modular product of technology maturation, is progressively replacing the application of Industrial Frequency Transformer on middle-size and small-size power supply.The Switching Power Supply that the utility model has selected isolated DC/DC transducer to form, realized the electrical isolation of output with input, and the multichannel output of different voltages can be arranged, and can meet the power demands of elevator control circuit.

Technical standard to the requirement of elevator ground protection is: " zero line separates all the time with ground wire ", " if include the circuit ground of electric safety device or contacting metal member and cause ground connection, this circuit should make the elevator drive main frame shut down immediately ".Because DC110V and the DC24V lead-out terminal (4) of this device have been realized electrical isolation with AC input terminal (1), its "-" termination enters the ground wire of elevator device, "+" end is linked into respectively elevator microcomputer control circuit (11), safety circuit (12), contactor control circuit (13), brake circuit (14) through fuse (6), (7), (8), (9), the rated current of its fuse is by corresponding load apolegamy.Like this, ground connection or contacting metal member occur and while causing ground connection, line electricity fails to be convened for lack of a quorum and greatly increases when above-mentioned elevator control circuit; cause fuse blows; cut off the power supply of elevator control circuit, with this, realize the control that the elevator drive main frame is shut down, play the effect of ground protection.

In another embodiment shown in Fig. 2, brake circuit has been selected DC220V, needs the electromagnetic brake of adapted DC220V power supply.This device is by the AC220V civil power input of AC input terminal (1), and through short-circuit protection fuse (16) access rectifier (15), (17) are the DC220V lead-out terminal.The characteristics of this circuit are that brake circuit is exported by the direct rectification of civil power, can reduce the burden of Switching Power Supply, reduce costs.Other parts are identical with Fig. 1.

Below with execution mode, the utility model has been carried out launching to describe by reference to the accompanying drawings, this description does not have restricted, the embodiment that shown in accompanying drawing, also just the utility model forms, and the technical solution of the utility model is not limited to this.Those of ordinary skill in the art should be understood that, in the situation that do not break away from the utility model design philosophy, the actual variation on some details of implementing also to have of the present utility model.So, as long as meet aim of the present utility model, these variations include within protection range of the present utility model.

Claims

1. an elevator is controlled supply unit, comprise input, output device and voltage conversion device that power supply is provided to elevator control circuit, it is characterized in that: it is isolation type switching power supply that described elevator is controlled supply unit, has replaced the control power supply be comprised of Industrial Frequency Transformer; The AC power of its input termination elevator supply, through rectifying and wave-filtering, DC/DC conversion, output is multi-channel dc power supply, is linked into respectively in the control circuit of elevator.

2. a kind of elevator is controlled supply unit as claimed in claim 1, it is characterized in that: what described elevator was controlled supply unit is input as the AC220V civil power, be output as DC110V, DC24V power supply, DC110V power supply "-" end ground connection wherein, "+" end is through safety circuit, contactor control circuit, the brake circuit of fuse access elevator; DC24V power supply "-" end ground connection, "+" end connects the microcomputer control circuit of elevator through fuse.

3. a kind of elevator is controlled supply unit as claimed in claim 1, it is characterized in that: in the control circuit that is linked into elevator by isolation type switching power supply, by AC power, through rectification, be linked in brake circuit.