CN2445506Y

CN2445506Y - Low-current selection control device suitable for alternating current

Info

Publication number: CN2445506Y
Application number: CN 00244688
Authority: CN
Inventors: 郑克鉌
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-10-17
Filing date: 2000-10-17
Publication date: 2001-08-29
Anticipated expiration: 2010-10-17

Abstract

The utility model relates to a low-current selection and control device suitable for alternating current. A through path and a low current path which is provided with current limiting structure are arranged between the input end of a power supply and the output end of structure with an option switch in the mode of parallel connection. The current limiting structure is the structure of a serially connected AC capacitor. Both ends of the current limiting structure are also parallelly connected with discharging resistors.

Description

Be applicable to the low current device for selection controlling of alternating current

The utility model relates to a kind of low current device for selection controlling that is applicable to alternating current, be particularly suitable for matching in the use under the low current condition with present multiple household electrical appliance.

At present multiple is the household electrical appliance commonly used of power supply with the alternating current, for example with the electric fan of motor as power, and with electric heating appliances such as the electric blanket of electrothermal method work, electric-heating cooking utensils, though in its product design, had the structures such as selector switch of regulating the operating power size, as the rotational speed regulation construction of switch of electric fan, the strong and weak construction of switch of heating of electric heating appliance etc., but often feel its incidental power adjustments range of choice in actual the use, particularly can aspect the range of choice of fainter power work, still can not satisfy the demand in hope.As, have the box fan of " gentle breeze " function or the electric fan of other form at present even use, some in particular cases also still dislikes powerful to its alleged " gentle breeze " for old man, infant, patient and/or in sleep etc.; For electric heating appliances such as electric blankets,, also still feel some partial heat sometimes even modulated to the most weak heating shelves.For electric fan etc. for the electric equipment of motor mode work, owing to be subjected to the restriction of machine operation principle, when himself starting resistor is crossed when low, not only be difficult for starting, and burn motor easily, even therefore it is provided with the rotational speed regulation structure, also rotating speed can not be provided with low excessively.And mostly the temperature adjustment principle of present many electric heating appliances is to realize that by the quantity that changes in running order electrothermal device its result often is inevitable to the influence of homogeneous heating degree.

Given this, the purpose of this utility model be for address the above problem provide a kind of can be at normal mode work and the low current device for selection controlling that is applicable to alternating current that need select with further reduction operating current mode workplace, be particularly suitable for being used with present multiple household electrical appliance, for example can make electric fan produce desirable atomic weak gentle breeze, maybe can make electric heating appliance produce needed atomic weak heating slowly.

The utility model is applicable to that the structure of the low current device for selection controlling of alternating current is, at power input with have between the output of selector switch structure with parallel way and be provided with always road all and be provided with the low current path of flow restriction, this flow restriction is the ac capacitor structure of a serial connection, at its two ends also and be connected to discharge resistance.The flow restriction that electric resistance structure and the ac capacitor structure by state setting in parallel that is provided with in the low current path formed, utilize to be the ac capacitor structure have the principle of metering function to alternating current, select the ac capacitor of different capabilities can make electric current in this path produce in various degree reduction.

When the utility model said apparatus uses, if selected with said through path output in the structure, the electric equipment that the supply voltage that can make input is connected after with the through device output of direct-passing mode influences its current limliting that is not subjected to this device and works with the intrinsic normal mode of its product.For example the electric fan that is connected behind the output, electric heating appliance etc. are then worked in its conventional mode.If selected when using with said low current path output in the structure, then the ac capacitor that is connected in series in this path has been owing to its metering function has reduced output current, and the electric fan that makes thereafter to be connected, electric heating appliance etc. can be worked in more weak mode under the electric current that has further reduced.Because many electric equipments self also dispose the adjustment structure of watt level, can also remake further adjusting to the operating state that is in the faint power of low current and select this moment under it cooperates, further enlarged the selection applicable scope.

For ease of make said apparatus that the bigger scope of application can be arranged and/or use in adjustable range, can also make said ac capacitor structure on the basis of said structure is the adjustable ac capacitor structure of alternating current capacity.Here the adjustable ac capacitor structure of said alternating current capacity can be the form of the AC capacitor group a plurality of in parallel that is combined with the selector switch structure; Also can be the form of variable AC capacitor.

In actual the use, can adopt the global design form that said apparatus of the present utility model is directly designed or be connected in the corresponding electrical equipment, also can make it become independently product, be used with suitable electric equipment as required during use.During as stand-alone product, so that said power input is the plug construction form in the device, output is advisable for the socket form.

Below foregoing of the present utility model is further described with embodiment shown in the drawings.But this should be interpreted as that the scope of the above-mentioned theme of the utility model only limits to following example.

Fig. 1 is the structural representation that the utility model is used for the low current device for selection controlling of alternating current.

In the low current device for selection controlling that is applicable to alternating current as shown in the figure, at the power input 1 of plug construction form with have between the output 5 of socket form of selector switch 4, be provided with always road 2 all and have the low current path 3 of flow restriction with parallel way, this flow restriction is the AC capacitor C of a serial connection, at its two ends also and be connected to discharge resistance R.This current limliting ac capacitor C can be the AC capacitor of fixed capacity, also can be the AC capacitor group form of a plurality of states in parallel of being combined with the selector switch structure, or adopt the adjustable ac capacitor structures of alternating current capacity such as variable AC capacitor.

Claims

1. be applicable to the low current device for selection controlling of alternating current, it is characterized in that at power input (1) and have between the output (5) of selector switch structure (4) being provided with always road (2) all and having the low current path (3) of flow restriction with parallel way, this flow restriction is the ac capacitor structure of a serial connection, at its two ends also and be connected to discharge resistance.

2. the low current device for selection controlling that is applicable to alternating current as claimed in claim 1 is characterized in that said ac capacitor structure is the adjustable ac capacitor structure of alternating current capacity.

3. the low current device for selection controlling that is applicable to alternating current as claimed in claim 2 is characterized in that the adjustable ac capacitor structure of said alternating current capacity is the form that is combined with the AC capacitor group a plurality of in parallel of selector switch structure.

4. the low current device for selection controlling that is applicable to alternating current as claimed in claim 2 is characterized in that the adjustable ac capacitor structure of said alternating current capacity is a type variable AC capacitor form.

5. as the described low current device for selection controlling that is applicable to alternating current of one of claim 1 to 4, it is characterized in that said power input (1) is the plug construction form, output (5) is the socket form.