CN2694001Y

CN2694001Y - Multistage speed electric fan

Info

Publication number: CN2694001Y
Application number: CN 200420014989
Authority: CN
Inventors: 吴达仁
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-01-18
Filing date: 2004-01-18
Publication date: 2005-04-20
Anticipated expiration: 2014-01-18

Abstract

The utility model discloses a multistage speed electric fan, belonging to the technical field of the electric fan. The multistage speed electric fan is an electric fan, which is composed of a gear position transfer switch, an electric machine, a timing controller, and a multistage speed. The multistage speed electric fan overcomes the defects that the electric fan in the prior art only use different split winding to generate different rotational speed to regulate the three speeds of the electric fan, the strong wind, the moderate wind, and the weak wind, the electric fan shuts down when the set time of the timing controller comes, and the wind go away temporality, man easily wake up in summer. The timing normally opened switch of the timing controller of the multistage speed electric fan is connected with a reactor in parallel, while in use, the normally closed switch is disconnected when the timing controller runs to the set time, the reactor is connected in series in the power supply circuit of the gear position transfer switch and the electric machine at this point, the output wind rate is further reduced, but the wind can not stop. The user can use the strong wind, and the multistage speed electric fan can automatically switch to the weak wind after the user goes to sleep.

Description

Many grades of wind speed electric fans

Technical field

The utility model belongs to the electric fan technical field, is a kind of gear throw over switch that includes, motor, many grades of wind speed electric fans of timing controller.

Background technique

Existing electric fan as shown in fig. 1, include gear throw over switch 1, motor 2, timing controller 3, described gear throw over switch 1 decide

contact

1A, 1B, the 1C correspondence links to each other with many tappings motor 2, the normally closed switch of timing controller is serially connected in the power loop.During use, rotate the movable touching plate of gear throw over switch 1, its moving contact K will decide

contact

1A, 1B with each respectively, 1C contacts, each startup winding of many tappings motor 2 can be inserted in the power loop, utilize different tap windings, produce different rotating speeds, electric fan is carried out high wind, apoplexy, three kinds of speed governing of weak wind.

Also there is a kind of motor itself to have only a winding in addition, pressure governor of serial connection on this winding, described pressure governor is the inductance of one group of different induction reactance, also be to utilize gear throw over switch 1 to insert each inductance in the pressure governor in the power circuit respectively, change the voltage that is added on the motor by inserting different inductance, carry out the adjustment of air quantity.

The normally closed interlock that is in definition status of timing controller 3 is serially connected in the power loop of electric fan.Timer is transferred to set condition, when reaching the set time of timing controller, the timing controller action, normally closed interlock disconnects, and cuts off electric moter voltage, and electric fan shuts down, and has not just had wind this moment.The accent wind gear of the electric fan of this structure is by 1 decision of gear throw over switch.In the prior art, a kind of electric fan is arranged, between motor and gear throw over switch 1, increase a capacitor C again, and capacitor C is connected on motor 2 and decides between the contact 1D, form faint wind speed governing.So, if the speed governing of many gears need be set, the complex structure of gear throw over switch 1 not only, and need pressure governor or many tappings motors 2 of the different induction reactance of the many groups of configuration, complex structure not only, and product cost will be improved greatly.

Use the electric fan of said structure summer, shortcoming is to turn round in set time and can dry, then stop blowing afterwards suddenly, this is for being in dormant people, often because of flowing, hot outside stops suddenly easily, and the air temperature gathered around the human body is constantly risen and do not feel well, the people is waken up.

Summary of the invention

The purpose of this utility model is to provide a kind of to be had air quantity and regulates shelves and can increase doubly, after set time, and can automatically switch many grades of wind speed electric fans of the little wind that enters correspondence of strong wind.

For realizing the purpose of this utility model, described many grades of wind speed electric fans are on timing controller timing normal open switch and be connected to reactor.

During use, when timing controller moves to set time, described normally closed switch disconnects, this moment, reactor was serially connected in the power circuit of gear throw over switch and motor, make the voltage ratio set time that is added on the motor further descend before, the air quantity of output also further reduces, but can not stop, can allow the user before sleep, use strong wind, and can convert little wind automatically in the time after entering sleep.

Description of drawings

The drawing of accompanying drawing is described as follows:

Fig. 1 is the timing control circuit figure of original speed governing electric fan.

Fig. 2 is the electrical structure diagram of many grades of wind speed electric fans of the utility model.

Embodiment

Below in conjunction with accompanying drawing, specific embodiment of the utility model is described in further detail:

As shown in Figure 2, many grades of wind speed electric fans of the utility model include gear throw over switch (1), motor (2), timing controller (3), reactor (4).Described reactor (4) is a capacitor 6, and on capacitor 6 two ends and be connected to resistance (5), in case shutdown and when sending power plug, plug pin produces discharge and electric shock human body.Gear throw over switch (1) has four driving switch, is respectively K1, K2, K3, K4.Timing controller (3) has a K switch 5 and timing normal open switch K6,

Timing controller (3) and gear throw over switch (1) and the motor (2) or the many tappings motor (2) that have a step down transformer are connected in the power circuit, in the K switch 5 of timing controller (3) or when regularly normal open switch K6 is closed, regulation stall throw over switch (1), driving switch K2, K3, the K4 of gear throw over switch (1) are connected respectively, can regulate the rotating speed of motor (2), realize that big high wind, big apoplexy reach the adjusting purpose with the third gear air quantity of pathogenic south wind.Timing controller (3) is when entering definition status, K switch 5 disconnects, timing normal open switch K6 closure, after reaching set time, regularly normal open switch K6 disconnects, reactor (4) is serially connected in the power loop, make and connected a reactor (4) again having on the motor of step down transformer (2) or the many tappings motor (2), operating voltage on the motor (2) further descends, above-mentioned big high wind, big apoplexy reaches with pathogenic south wind and reduces one-level respectively, become little high wind, cockleshell reaches and little weak wind, not only reaches the purpose of automatic timing conversion air quantity, and has become six air quantity regulation stalls.So can realize doubling the air quantity adjustment of gear by the combination of gear throw over switch (1) and timing controller (3).Only be to have increased a resistance and a capacitor compared with original technology this moment, reached and utilized minimum device, realizes the multiplication of regulation stall and the purpose that large and small wind automatic timing switches.

Claims

1. one kind many grades wind speed electric fans include timing controller (3), it is characterized in that going up and be connected to reactor (4) at timing controller (3) timing normal open switch K6.

2. many grades of wind speed electric fans according to claim 1 is characterized in that at described reactor (4) be capacitor (6).

3. many grades of wind speed electric fans according to claim 2 is characterized in that in described capacitor (6), on the two ends and be connected to resistance (5).