CN103699150A

CN103699150A - Electric blanket six-level temperature control switch

Info

Publication number: CN103699150A
Application number: CN201310738999.5A
Authority: CN
Inventors: 吴建堂
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-12-28
Filing date: 2013-12-28
Publication date: 2014-04-02

Abstract

The invention relates to an electric blanket six-level temperature control switch. The electric blanket six-level temperature control switch is characterized by comprising 220V alternating-current power, a temperature adjusting and triggering circuit and an electric blanket electric heating driving circuit; the temperature adjusting and triggering circuit consists of a single-pole multi-throw switch Kn, six resistors R1 to R6, a capacitor C1, a resistor R8 and a bi-directional triggering diode VT1, and the selected model number of the bi-directional triggering diode VT1 is DB3; the electric heating blanket electric heating driving circuit consists of bi-directional controllable silicon SCR and an electric heating blanket RL. The temperature control of the electric heating blankets of different types such as a single-person electric heating blanket, a double-person electric heating blanket or the double-person double-temperature-control electric heating blanket sold in the market is only controlled in two levels. In real application, the temperature control switch of the traditional electric heating blanket is extensive. By adopting the electric heating blanket six-level temperature control switch, the weaknesses of the existing electric heating blanket temperature control switch can be overcome, and the working temperature of the electric heating blanket can be controlled at a comfortable temperature for the user.

Description

Six grades of temp control switchs of electric blanket

Technical field

The invention belongs to electronics and temperature control technology field, relate to six grades of temp control switchs of a kind of electric blanket.

Background technology

Various single, double or double pair temperature control electric blanket on market, temperature control almost without exception only have high temperature and two shelves of low temperature, wherein low temperature shelves typically use silicon rectifier diode and carry out half-wave rectification, thereby making low temperature shelves power is the nearly 1/2nd of high temperature shelves, the temperature of electric blanket is between two grades of high low temperature or can not carry out temperature adjusting below low temperature shelves.Temperature is too low when using severe winter, to tend to feel the low temperature shelves of electric blanket, and high temperature shelves temperature is often higher.When weather is warm a little, also some is higher can to feel again the temperature of electric blanket low temperature shelves.Along with temperature just changes, there are different requirements at the age that user is different to the working temperature of electric blanket.In a word, in the actual use of electric blanket, it is too extensive that the temp control switch of traditional electric blanket seems.

In order to overcome the defect that on market, existing electric blanket temperature gauge tap exists, be necessary to study a kind of temp control switch that can carry out many grades of temperature adjustments, it can be controlled at user the working temperature of electric blanket and feel pleasant temperature.

Below describe six grades of temp control switchs of electric blanket of the present invention related correlation technique content in implementation process in detail.

Summary of the invention

Goal of the invention and beneficial effect: various single, the double or double pair temperature control electric blanket on market, temperature control almost without exception only have high temperature and two shelves of low temperature.Temperature is too low when using severe winter, to tend to feel the low temperature shelves of electric blanket, and high temperature shelves temperature is often higher.When weather is warm a little, can think that again the temperature of electric blanket low temperature shelves is also too high a bit.In a word, in the actual use of electric blanket, it is too extensive that the temp control switch of traditional electric blanket seems.

In order to overcome the defect that on market, existing electric blanket temperature gauge tap exists, the temp control switch that six grades of temp control switchs of electric blanket of the present invention can carry out many grades of temperature adjustments, it can be controlled at user the working temperature of electric blanket and feel pleasant temperature.

Circuit working principle: when voltage raises gradually after 220V alternating current zero passage, resistance R 7 is capacitor C 1 charging by resistance R 1～R6, when the charging voltage at capacitor C 1 two ends is greater than the voltage breakdown of bidirectional trigger diode VT1, bidirectional trigger diode VT1 conducting, apply trigger voltage to the control utmost point of bidirectional triode thyristor SCR, bidirectional triode thyristor SCR conducting is controlled extremely ineffective later, and bidirectional triode thyristor SCR will maintain conducting state always, until 220V alternating current ends during zero passage again.By single pole multiple throw Kn, select different resistance access circuits, thereby make the asynchronism(-nization) of the charging of capacitor C 1, the ON time of bidirectional triode thyristor SCR also can be different, the alternating current voltage being added on electric blanket RL will be different, thereby make electric blanket RL obtain different electric power, realize the temperature controlled object of electric blanket RL.

Technical characterictic: six grades of temp control switchs of electric blanket, it comprises 220V alternating current, temperature adjusting and trigger circuit, electric blanket electrothermal driving circuit, it is characterized in that:

Temperature regulates and trigger circuit: it is by single pole multiple throw Kn, 6 resistance R 1～R6, capacitor C 1, resistance R 8 and bidirectional trigger diode VT1 form, the model that bidirectional trigger diode VT1 adopts is DB3, 6 fixed contacts of single pole multiple throw Kn connect respectively one end of 6 resistance R 1～R6, one end of another termination capacitor C 1 of 6 resistance R 1～R6 and one end of resistance R 8, the zero line side N of another termination 220V alternating current of capacitor C 1, one end of another termination bidirectional trigger diode VT1 of resistance R 8, the control utmost point of another termination bidirectional triode thyristor SCR of bidirectional trigger diode VT1, the lever arm of single pole multiple throw Kn connects electric blanket electrothermal driving circuit by resistance R 7,

Electric blanket electrothermal driving circuit: it is comprised of bidirectional triode thyristor SCR and electric blanket RL, the first anode T1 of bidirectional triode thyristor SCR connects one end of electric blanket RL, the live wire end L of another termination 220V alternating current of electric blanket RL, the second anode T2 of bidirectional triode thyristor SCR meets the zero line side N of 220V alternating current.

Accompanying drawing explanation

Accompanying drawing is embodiment circuit working schematic diagrams of six grades of temp control switchs of electric blanket provided by the invention; In accompanying drawing, 6 of single pole multiple throw Kn fixed contacts connect respectively one end, left side of 6 resistance R 1～R6.

Embodiment

According to six grades of temp control switch circuit working schematic diagrams of electric blanket shown in the drawings and accompanying drawing explanation, and according to annexation between components and parts in the each several part circuit described in summary of the invention, and the components and parts technical parameter described in embodiment requires and circuit production main points are implemented to realize the present invention, below in conjunction with embodiment, correlation technique of the present invention is further described.

Components and parts are selected and technical parameter

SCR is bidirectional triode thyristor, requires working current 1A, withstand voltage >=400V, the model BCR3AM of employing;

All resistance in circuit all adopt 1/8W carbon resister, the resistance 1K Ω of resistance R 1; The resistance 18K Ω of resistance R 2; The resistance of resistance R 3 is 27K Ω; The resistance 39K Ω of resistance R 4; The resistance of resistance R 5 is 51K Ω; The resistance 100K Ω of resistance R 6; The resistance of resistance R 7 is 1K Ω; The resistance of resistance R 8 is 62 Ω;

C1 is electric capacity, and its capacity is 0.1 μ F, requires withstand voltage >=150V;

VT1 is bidirectional trigger diode, and the model of employing is DB3;

Kn is single pole multiple throw, can use 6 grades of voltage-selected switches in conventional 3～12V direct supply;

RL is electric blanket, and in electric blanket, the power of electrical heating wire is 55～60W/220V.

Circuit production main points and circuit debugging

Because of the circuit structure of six grades of temp control switchs of electric blanket fairly simple, as long as the electronic devices and components performance of generally selecting is intact, and the components and parts annexation in accompanying drawing is welded to specifications, physical connection line and welding quality are after careful inspection is correct, and circuit of the present invention does not substantially need to carry out any debugging and can normally work;

Each grade of corresponding power of single pole multiple throw Kn is followed successively by: P, 5/6P, 4/6P, 3/6P, 2/6P, 1/6P, " P " is expressed as total power.

Claims

1. six grades of temp control switchs of electric blanket, it comprises 220V alternating current, temperature adjusting and trigger circuit, electric blanket electrothermal driving circuit, it is characterized in that:

Described temperature adjusting and trigger circuit are by single pole multiple throw Kn, 6 resistance R 1～R6, capacitor C 1, resistance R 8 and bidirectional trigger diode VT1 form, the model that bidirectional trigger diode VT1 adopts is DB3, 6 fixed contacts of single pole multiple throw Kn connect respectively one end of 6 resistance R 1～R6, one end of another termination capacitor C 1 of 6 resistance R 1～R6 and one end of resistance R 8, the zero line side N of another termination 220V alternating current of capacitor C 1, one end of another termination bidirectional trigger diode VT1 of resistance R 8, the control utmost point of another termination bidirectional triode thyristor SCR of bidirectional trigger diode VT1, the lever arm of single pole multiple throw Kn connects electric blanket electrothermal driving circuit by resistance R 7,

Described electric blanket electrothermal driving circuit is comprised of bidirectional triode thyristor SCR and electric blanket RL, the first anode T1 of bidirectional triode thyristor SCR connects one end of electric blanket RL, the live wire end L of another termination 220V alternating current of electric blanket RL, the second anode T2 of bidirectional triode thyristor SCR meets the zero line side N of 220V alternating current.