CN2442451Y

CN2442451Y - Rotating speed converter for single phase motor

Info

Publication number: CN2442451Y
Application number: CN 00248724
Authority: CN
Inventors: 钟开军
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-09-22
Filing date: 2000-09-22
Publication date: 2001-08-08
Anticipated expiration: 2010-09-22

Abstract

The utility model relates to a rotating speed converter for a single phase motor and can be composed of a delay switch and a voltage reduction element which are connected in parallel. The utility model can be installed in the inside of an electric fan and can also be connected with the electric fan. The utility model can have an automatic voltage reduction current-limiting function and can reduce the power of the electric fan and fan rotation speed. The utility model can also make the fan directly blow towards human body, which has the advantages of soft air quantity, low noise and long service life of the motor.

Description

The monophase machine rotational speed converter

The utility model relates to a kind of transducer, and especially a kind of monophase machine rotational speed converter belongs to household appliance technical field.

At present; the wind speed of domestic electric fan is to control by the size that current of electric is regulated in gear shift; the high, medium and low third gear of general branch is satisfied the demand with these three shelves, regularly then realizes by the timer on the fan; but timer mainly is the effect of regularly shutting down at present; for some occasions are arranged, people need satisfy the demand by automatic speed regulation, as people in when sleep; wind speed is quicker before often needing to sleep, and needs wind speed slow after sleeping.Otherwise, cause discomfort after sleeping easily, cause illness, wind speed also can be saved power supply slowly simultaneously.

The purpose of this utility model, be to overcome above-mentioned deficiency, a kind of monophase machine rotational speed converter is provided, this transducer be installed in the electric fan or with the electric fan coupling, can play automatic current limiting and hypotensive effect, thereby realize reducing the purpose of wind speed, satisfy people's required a gentle wind springing up under sleep or specific environment, reduce power of motor simultaneously, save electric weight.

For achieving the above object, the monophase machine rotational speed converter is disconnected closing with a decompression device by a time-delay and is formed in parallel.

It is electronic time-delay switch that time-delay disconnects the pass.

It is mechanical Mainspring type delay switch that time-delay disconnects the pass.

Decompression device is electric capacity, inductance, resistance or PTC.

Socket and plug are installed on the shell of transducer.

After adopting this structure, can make the conversion of conventional fan slack-off automatically, the wind that blows out is very soft, when work or sleep, can directly blow to human body, and can not cause discomfort, and noise is little, simultaneously because electric current and voltage all reduce power is diminished, the saving power supply has prolonged life-span of fan.

Be described in further details below in conjunction with drawings and the specific embodiments.

Fig. 1 is a schematic diagram of the present utility model;

Fig. 2 is an another kind of structural representation of the present utility model;

As seen from Figure 1, the monophase machine rotational speed converter is made up of a delay switch 2 and a decompression device 1, and this structure can be directly installed on fan inside, and delay switch 2 various ways comprise electronic time-delay switch and mechanical Mainspring type delay switch; Electronic time-delay switch comprises crystal switch, bridge circuit switches such as controllable silicon; Machinery Mainspring type delay switch comprises the relay switch of spring contact switch, electronic circuit control etc., and this delay switch 2 has long logical, long disconnected, three kinds of functions of time-delay.

As seen from Figure 2, the another kind of form of monophase machine rotational speed converter is that the outside has a shell 3, socket 4 and plug 5 are housed on the shell 3, this form can not be directly installed on fan inside, but be inserted on the power supply, then fan is inserted on the monophase machine rotational speed converter again and gets final product, its effect be installed in the identical of fan inside.

During use, if when needing moment to convert gentle breeze to, can directly forward to long out of stockly, because decompression device 1 has hypotensive effect, the voltage of fan be reduced, rotating speed is slack-off, reaches the gentle breeze purpose.

If need be through after wind speed is slack-off more after a while, it be out of stock then to get to time-delay, after setting certain hour, and automatic disconnection, decompression device 1 is connected, and reaches the step-down purpose, makes wind speed slack-off.If when not needing to reduce wind speed, forward long logical shelves to, line short.

Claims

1, a kind of monophase machine rotational speed converter is characterized in that, it is to disconnect pass (2) by a time-delay to be formed in parallel with a decompression device (1).

2, monophase machine rotational speed converter according to claim 1 is characterized in that, it is electronic time-delay switch that time-delay disconnects pass (2).

3, monophase machine rotational speed converter according to claim 1 is characterized in that, it is mechanical Mainspring type delay switch that time-delay disconnects pass (2).

4, according to claim 1,2 or 3 described monophase machine rotational speed converters, it is characterized in that decompression device (1) is electric capacity, inductance, resistance or PTC.

5, monophase machine rotational speed converter according to claim 1 is characterized in that, socket (4) and plug (5) are installed on the shell of transducer (3).