CN2413432Y

CN2413432Y - Power-saving device for industrial sewing machine

Info

Publication number: CN2413432Y
Application number: CN 00207838
Authority: CN
Inventors: 郭景熙
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-03-31
Filing date: 2000-03-31
Publication date: 2001-01-03
Anticipated expiration: 2010-03-31

Abstract

The utility model discloses a power-saving device for an industrial sewing machine. The voltage of a motor is supplied through the power-saving device which is composed of a self-coupling transformer. One end of the self-coupling transformer can output voltage in multiple stages through a sliding contact, so that the motor obtains optimum voltage. When the motor is under load, the power factor of the motor is increased. When the motor is under zero load, exciting current is reduced. Therefore, iron loss and copper loss are reduced. The utility model can save power for the motor which is under the zero load for a long time, and reduced the production cost and the failure rate of the motor. The utility model has the advantages of simple structure, low cost, high stability and long service life, and is particularly suitable for industrial sewing machines of different models. The power-saving device for an industrial sewing machine has a broad application prospect in the industries of garment making, etc.

Description

The industrial sewing machine electricity-saving appliance

The utility model relates to a kind of electricity-saving appliance of motor, particularly a kind of industrial sewing machine electricity-saving appliance.

At present, the employed monopole asynchronous motor of industrial sewing machines such as clothing, shoemaking does not have regulator mostly, because the no-load ratio of motor is more than 85% in the use, motor still with the rated voltage operation, causes reactive loss when unloaded, thereby easily the temperature rise failure rate also increases.Patent documentation once disclosed " motor extremum regulator " (patent No. 95246271.0) and " industrial sewing machine battery saving arrangement " (98243316.6) two kinds of economize on electricitys product.The former is connected on electricity-saving appliance in the electric motor loop, the voltage when self-regulation motor is unloaded, but circuit is too complicated and cost an arm and a leg, and stability is not so good simultaneously, and useful life is short.Shortcomings such as the latter is at sealed type economize on electricity container of being made up of sensitive switch, RC circuit of electric motor loop series connection, but has unstable properties equally, and useful life is short.

The purpose of this utility model provides a kind of simple in structure, low-cost, less trouble, the electricity-saving appliance of stable performance.

The purpose of this utility model can be achieved as follows: this industrial sewing machine electricity-saving appliance mainly is made up of motor, battery saving arrangement, and the voltage of motor is to supply with via battery saving arrangement, and battery saving arrangement is an autotransformer, and the one end can multistage output voltage by sliding contact.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Accompanying drawing 1 is the structural representation of the utility model industrial sewing machine electricity-saving appliance.

In the drawings, the lower end of autotransformer 3 and sliding contact 4 connect and compose the loop with motor 1 and motor 2 in parallel, also are in series with the ammeter 6 that is used to show size of current in the coincidence circuit.The upper and lower end of autotransformer constitutes the loop by the supply voltage that 5. 4. 2. 1. the contact reach linked switch 7 and 220V, and the two ends of autotransformer also are parallel with red light HL2, show the break-make situation in this loop.

When pulling linked switch 7 upward, the contact 4. with 6. conducting, the contact 1. with 3. conducting, green light HL1 is bright, at this moment autotransformer quits work, motor is directly by the peripheral power supply power voltage supply of 220V, purpose is to prevent autotransformer just in case when breaking down.Motor can also be worked.

When pulling linked switch 7 downwards, the contact 4. with 5. conducting, the contact 1. with 2. conducting, red light HL2 is bright, autotransformer is in running order, at this moment the voltage of motor is the lower end of autotransformer and the output voltage between the sliding contact.By adjusting the position of sliding contact on autotransformer, can obtain different output voltages, according to the magnitude of voltage of the best of different selection of Motor.Under this voltage, when motor load, power factor improves greatly, thereby save electric power and when unloaded, because the magnitude of voltage of the normally used 220V of voltage ratio is much lower, makes the exciting curent of motor greatly reduce, the also corresponding too big minimizing of iron loss, copper loss like this, for the high motor of empty rate, just can save a lot of electric power.Voltmeter 5 is used to survey the variation of showing supply voltage so that adjust the output voltage of autotransformer.

Use mensuration by the scene, the motor of band the utility model electricity-saving appliance is when load, and power factor can be increased to 0.95-1, the 10%-20% that can economize on electricity, economize on electricity reaches 60%-65% when zero load, and 35%-45% on average economizes on electricity, save electric power resource widely, for enterprise reduces production costs.Simultaneously, this joint device is simple in structure, and cost is low, and stability is high, and fault is few, reaches useful life more than 15 years, is applicable to that several above motors use, and is particularly suitable for using on the industry such as clothes clothing.

Claims

1. industrial sewing machine electricity-saving appliance, mainly form by motor (1,2), battery saving arrangement, it is characterized in that: the voltage of described motor is to supply with via battery saving arrangement, and described battery saving arrangement is an autotransformer (3), and the one end can multistage output voltage by sliding contact (4).