CN200942449Y

CN200942449Y - Quick-heating electric iron

Info

Publication number: CN200942449Y
Application number: CN 200620032319
Authority: CN
Inventors: 秦上纲
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-08-28
Filing date: 2006-08-28
Publication date: 2007-09-05
Anticipated expiration: 2016-08-28

Abstract

The utility model discloses a thermoelectric searing iron, including a power circuit, a handle and a connecting rod fixed on the handle; the forehead of the connecting rod is the searing iron forehead. The connecting rod and the searing iron forehead are both hollow tubes, a small hollow tube is covered in the connecting rod, an insulating layer is equipped between the pipe walls of the small hollow tube and the connecting rod, the end of the searing iron forehead is a first electrode, the first electrode and the end surface of the small hollow tube is connected by a nickel wire, the nickel wire is covered by an insulating layer. The utility model searing iron forehead is a hollow two-course construction; an insulating layer is provided in the middle of the hollow two-course construction, compared with the traditional solid connecting rod, the hollow two-course construction has the similar electrical conductivity, and the temperature conduction from the searing iron forehead to the handle is greatly reduced, enhances the searing iron forehead hot effect; the preheat interval only needs 0.3 second to achieve the melt tin welding temperature. The silicon-controlled non-contact switch replaces the traditional electronic contacting switch and the service life is prolonged; the automatic overload circuit is provided to the power source and the using security and reliability are greatly enhanced.

Description

The instant heating electric iron

Technical field

The utility model relates to a kind of electric iron, the instant heating electric iron that especially a kind of firing rate is exceedingly fast.

Background technology

Electric iron is very important a kind of tool using in the electron trade, along with the development at a high speed of whole industry, to the also progressively raising of performance requirement of instrument electric iron.Traditional electric iron is subjected to the limitation of low energy technology, slowly withdraws from the market, and progressively eliminates, and the substitute is the novel high-efficiency and energy-saving rapid-heating type electric iron of putting on market in the recent period, and its appearance has improved the effect of using greatly.Yet observation and use by a period of time, we find that rapid-heating type electric iron on the market is all because the defective of selection and structural design, cause this series products also to have relative low energy, defectives such as service life is short, performance does not reach optimum state, more than 3 seconds, far can not satisfy the user in the shortest time preheating time at the soonest, even with getting with melting welding tin requirement of welding.

Summary of the invention

The purpose of this utility model provides the instant heating electric iron that a kind of firing rate is exceedingly fast.

For achieving the above object, the utility model adopts following technical scheme: a kind of instant heating electric iron, comprise power circuit, handle and be fixed on connecting rod on the handle, the connecting rod head is a solder horn, and described connecting rod and solder horn are hollow pipe, and connecting rod inside also is with a little hollow pipe, both are provided with insulating barrier between the tube wall, the end of described solder horn is first electrode, is connected with nickel wire between first electrode and the little hollow pipe end face, and the nickel wire outside is surrounded by insulating barrier.

Weld the solder joint in the slit for convenience, do not keep off user's sight line, also be provided with the transiting rod of one section caliber between described connecting rod and the solder horn less than connecting rod, transiting rod is a hollow copper tubing, its center installs second electrode, is provided with insulating barrier between the transiting rod inwall and second electrode, and second electrode, one end links to each other with little hollow pipe end face in the connecting rod, the second electrode other end links to each other with nickel wire, and the end face of second electrode and nickel wire connecting place is provided with insulating trip.

Described power circuit comprises rectification circuit module, self-energizing switches circuit module, and described rectification circuit module is the bridge rectifier that diode D3, D4, D5, D6 form, and is provided with K switch 1 with diode D4 polyphone; Described self-energizing switches circuit module is by resistance R 6, R7, R8, triode G1, G2, diac D10, capacitor C 3, C4, C5, inductance coil L1, L2, L3, L4 forms, inductance coil L2 connects with diac D10 then and capacitor C 3 parallel connections, inductance coil L2 is connected resistance R 8 with the continuous end of diac D10 and links to each other with triode G2 base stage then, triode G2 emitter stage links to each other with the inductance coil L2 other end, triode G2 colelctor electrode and triode G1 emitter stage, inductance coil L1 one end links to each other jointly with inductance coil L3 one end, link to each other with triode G1 base stage behind the inductance coil L1 other end series resistance R7, capacitor C 4, C5 series connection back and triode G1 colelctor electrode, the two ends parallel connection of triode G2 emitter stage, capacitor C 4, C5 series connection end connects inductance coil L4 one end, and the inductance coil L4 other end links to each other with the inductance coil L3 other end; Inductance coil L4 induction end is inductance coil L5, and inductance coil L5 two ends link to each other with second electrode with described first electrode respectively.

In order to improve safety in utilization and reliability, circuit after the described rectification circuit module is provided with controllable silicon D9, K switch 2, the power switch circuit of resistance R 2 compositions and the overload protecting circuit of being made up of controllable silicon D8, resistance R 4, R5, the anode of controllable silicon D9 connects the bridge rectifier output in the power switch circuit, negative electrode inserts the self-energizing switches circuit module, the control utmost point connects K switch 2 backs connects with resistance R 2, and resistance R 2 other ends link to each other with the A point in parallel of controllable silicon D8 anode and resistance R 3; Controllable silicon D8 anode links to each other with resistance R 2, R3 series connection A point in the described overload protecting circuit; negative electrode links to each other with the parallel connection point of resistance R 5, capacitor C 2; the control utmost point links to each other with resistance R 4; capacitor C 2 links to each other with diode D7 negative pole with resistance R 3 series connection points; diode D7 positive pole links to each other with the input power supply, and the parallel connection point of resistance R 4, R5 inserts described self-energizing switches circuit module.

For the handled easily that shows directly perceived, described power circuit interface is arranged in parallel the reduction voltage circuit module of resistance R 1 and capacitor C 1 polyphone composition, be connected with the power supply demonstration rectification circuit that diode connected in parallel D1, D2 form, be in series with light emitting diode D13 with diode D2 thereafter; Two electrodes in inductance coil L5 two ends and solder horn duty display circuit that is provided with resistance R 9, light emitting diode D14 composition in parallel.

For making compact conformation, each module component of described power circuit all is positioned on the same circuit board, and this circuit board is positioned at described handle inside.

The utility model is according to the skin that becomes of high frequency electric, the flatiron head adopts hollow double-decker, the centre is provided with insulating barrier, compare with the solid connecting rod of tradition and to have same electric conductivity, and greatly reduce of the conduction of solder horn temperature to handle, the heat that has improved solder horn is imitated, and only need can reach for 0.3 second and melt the soldering jointing temp preheating time during use.Adopt the controllable silicon noncontacting switch to replace traditional contact switch; improved greatly because of using and frequently caused the aging unfavorable factor of bringing in contact; thereby prolonged service life; and automatic overload protecting circuit is set on power supply; in case voltage surpasses normal range of operation; it will close whole power circuit automatically, not recover can not start under the normal situation at voltage, therefore improve security and the reliability used greatly.

Description of drawings

Figure 1 shows that the utility model structural representation;

Figure 2 shows that power circuit diagram of the present utility model.

The specific embodiment

As shown in Figure 1, this instant heating electric iron comprises power circuit, handle 1 and is fixed on connecting rod 5 on the handle 1, connecting rod 5 heads are solder horn 9, for convenience solder horn 9 is stretched into the solder joint in the slit welding slit, do not keep off user's sight line, also be provided with the transiting rod 7 of one section caliber less than connecting rod 5 between connecting rod 5 and the solder horn 9, connecting rod 5 and transiting rod 7 are hollow copper tubing, solder horn 9 is made for the iron wire of diameter 3 millimeter, and the end of solder horn 9 is first electrode 10.Connecting rod 5 inside also are with a little hollow pipe 15, little hollow pipe 15 is a hollow copper tubing, its outer tube wall parcel one deck mica paper 6 forms insulating barrier, transiting rod 7 centers install one section solid-iron silk and form second electrode 8, second electrode, 8 outer walls parcel one deck mica paper 14 forms insulating barrier, the center of solder horn 9 is drilled with blind hole, the first terminal electrode 10 is still solid, install nickel wire 11 in the blind hole, nickel wire 11 coated outside one deck mica paper 12 form insulating barrier, and nickel wire 11 two ends connect first electrode 10 and second electrode 8 respectively.Little hollow pipe 15 end faces welding in second electrode, 8 one ends and the connecting rod 5 is connected as a single entity, and second electrode, 8 other ends and nickel wire 11 extruding are fastening, and second electrode 8 is provided with mica paper formation insulating trip 13 with the end face of nickel wire 11 connecting places.Be provided with circuit board 2 and power switch 17, power change switch 18 in the handle 1, power line 19 stretches out from end, and circuit board 2 is provided with transformer 3 and power supply indicator 4, relay indicating light 16.By

mica paper

6,14,12 and mica paper insulating trip 13 shell of connecting rod 5, transiting rod 7, solder horn 9 and little hollow pipe 15, second electrode 8, the nickel wire 11 of its hollow interior are separated, end in two outputs of power circuit links to each other with first electrode 10 by connecting rod 5 shells, another output links to each other with second electrode 8 by little hollow pipe 15, and the nickel wire 11 between first electrode 10 and second electrode 8 forms heater.

As shown in Figure 2, the power circuit in this instant heating electric iron comprises rectification circuit module, power switch circuit, overload protecting circuit, self-energizing switches circuit module.The rectification circuit module is the bridge rectifier that diode D3, D4, D5, D6 form, and is provided with K switch 1 with diode D4 polyphone.Circuit after the rectification circuit module is provided with controllable silicon D9, K switch 2, the power switch circuit of resistance R 2 compositions and the overload protecting circuit of being made up of controllable silicon D8, resistance R 4, R5; the anode of controllable silicon D9 connects the bridge rectifier output in the power switch circuit; negative electrode inserts the self-energizing switches circuit module; the control utmost point connects K switch 2 backs connects with resistance R 2, and resistance R 2 other ends link to each other with the A point in parallel of controllable silicon D8 anode and resistance R 3.Controllable silicon D8 anode links to each other with resistance R 2, R3 series connection A point in the overload protecting circuit; negative electrode links to each other with the parallel connection point of resistance R 5, capacitor C 2; the control utmost point links to each other with resistance R 4; capacitor C 2 links to each other with diode D7 negative pole with resistance R 3 series connection points; diode D7 positive pole links to each other with the input power supply; capacitor C 2, diode D7 provide trigger voltage for controllable silicon D9, and the parallel connection point of resistance R 4, R5 inserts the self-energizing switches circuit module.The self-energizing switches circuit module is by resistance R 6, R7, R8, triode G1, G2, diac D10, capacitor C 3, C4, C5, inductance coil L1, L2, L3, L4 forms, inductance coil L2 connects with diac D10 then and capacitor C 3 parallel connections, inductance coil L2 is connected resistance R 8 with the continuous end of diac D10 and links to each other with triode G2 base stage then, triode G2 emitter stage links to each other with the inductance coil L2 other end, triode G2 colelctor electrode and triode G1 emitter stage, inductance coil L1 one end links to each other jointly with inductance coil L3 one end, link to each other with triode G1 base stage behind the inductance coil L1 other end series resistance R7, capacitor C 4, C5 series connection back and triode G1 colelctor electrode, the two ends parallel connection of triode G2 emitter stage, capacitor C 4, C5 series connection end connects inductance coil L4 one end, and the inductance coil L4 other end links to each other with the inductance coil L3 other end; Inductance coil L4 induction end is inductance coil L5, and inductance coil L5 two ends link to each other with second electrode 8 with first electrode 10 shown in Fig. 1 respectively.The power circuit interface is arranged in parallel the reduction voltage circuit module of resistance R 1 and capacitor C 1 polyphone composition, is connected with the power supply demonstration rectification circuit that diode connected in parallel D1, D2 form thereafter, is in series with light emitting diode D13 with diode D2; Two electrodes in inductance coil L5 two ends and solder horn duty display circuit that is provided with resistance R 9, light emitting diode D14 composition in parallel.Each module component of power circuit all is positioned on the same circuit board 2, and this circuit board 2 is positioned at handle shown in Figure 11 inside.

As shown in Figure 1, 2, with the plug input 220V50Hz alternating current of power line 19 ends, by R1, C1 step-down, D13 is luminous for D1, D2 rectification supply, and power supply has been connected in expression, and the light emitting diode D13 among Fig. 2 is the power supply indicator 4 among Fig. 1.Bridge rectifier is a direct current with the 220V AC rectification, K2 among Fig. 2 is the power switch 17 among Fig. 1, when pressing operating switch K2, controllable silicon D9 conducting, this moment, the self-energizing switches circuit got electric work, and produced the high frequency magnetic field of 25KHz, be coupled to L5 by L4, make L5 obtain the high frequency voltage of a 3V25KHz, the powerful electric current that at this moment just has 40A makes it heating rapidly and reaches molten Xi Wendu by the nickel wire 11 in the solder horn 9.The high frequency voltage of 3V25KHz is lighted the luminous expression flatiron of D14 by R9 simultaneously and is in heated condition, and the light emitting diode D14 among Fig. 2 is the relay indicating light 15 among Fig. 1.When supply voltage was too high, the pressure drop of the resistance R 5 in the overload protecting circuit uprised, and makes the D8 triggering and conducting, the voltage that A is ordered vanishing immediately, even press K2, D9 also can't conducting, thereby has played protective effect.K1 among Fig. 2 is the power change switch 18 among Fig. 1, and circuit is full-wave rectification when it is connected, and the electric current that offers Switching Power Supply is big, and power is also big, and flatiron heat must be just fast, helps welding big solder joint; K1 is a halfwave rectifier when disconnecting, and this moment, power diminished, and flatiron is warm slowly slightly, is fit to the little contact of weldering, also can make just relatively to adapt to the person.

Claims

1, a kind of instant heating electric iron, comprise power circuit, handle and be fixed on connecting rod on the handle, the connecting rod head is a solder horn, it is characterized in that: described connecting rod and solder horn are hollow pipe, connecting rod inside also is with a little hollow pipe, and both are provided with insulating barrier between the tube wall, and the end of described solder horn is first electrode, be connected with nickel wire between first electrode and the little hollow pipe end face, the nickel wire outside is surrounded by insulating barrier.

2, instant heating electric iron as claimed in claim 1, it is characterized in that: also be provided with the transiting rod of one section caliber between described connecting rod and the solder horn less than connecting rod, transiting rod is a hollow copper tubing, its center installs second electrode, be provided with insulating barrier between the transiting rod inwall and second electrode, second electrode, one end links to each other with little hollow pipe end face in the connecting rod, and the second electrode other end links to each other with nickel wire, and the end face of second electrode and nickel wire connecting place is provided with insulating trip.

3, instant heating electric iron as claimed in claim 1 or 2, it is characterized in that: described power circuit comprises rectification circuit module, self-energizing switches circuit module, described rectification circuit module is the bridge rectifier that diode D3, D4, D5, D6 form, and is provided with K switch 1 with diode D4 polyphone; Described self-energizing switches circuit module is by resistance R 6, R7, R8, triode G1, G2, diac D10, capacitor C 3, C4, C5, inductance coil L1, L2, L3, L4 forms, inductance coil L2 connects with diac D10 then and capacitor C 3 parallel connections, inductance coil L2 is connected resistance R 8 with the continuous end of diac D10 and links to each other with triode G2 base stage then, triode G2 emitter stage links to each other with the inductance coil L2 other end, triode G2 colelctor electrode and triode G1 emitter stage, inductance coil L1 one end links to each other jointly with inductance coil L3 one end, link to each other with triode G1 base stage behind the inductance coil L1 other end series resistance R7, capacitor C 4, C5 series connection back and triode G1 colelctor electrode, the two ends parallel connection of triode G2 emitter stage, capacitor C 4, C5 series connection end connects inductance coil L4 one end, and the inductance coil L4 other end links to each other with the inductance coil L3 other end; Inductance coil L4 induction end is inductance coil L5, and inductance coil L5 two ends link to each other with second electrode with described first electrode respectively.

4, instant heating electric iron as claimed in claim 3, it is characterized in that: the circuit after the described rectification circuit module is provided with controllable silicon D9, K switch 2, the power switch circuit of resistance R 2 compositions and the overload protecting circuit of being made up of controllable silicon D8, resistance R 4, R5, the anode of controllable silicon D9 connects the bridge rectifier output in the power switch circuit, negative electrode inserts the self-energizing switches circuit module, the control utmost point connects K switch 2 backs connects with resistance R 2, and resistance R 2 other ends link to each other with the A point in parallel of controllable silicon D8 anode and resistance R 3; Controllable silicon D8 anode links to each other with resistance R 2, R3 series connection A point in the described overload protecting circuit; negative electrode links to each other with the parallel connection point of resistance R 5, capacitor C 2; the control utmost point links to each other with resistance R 4; capacitor C 2 links to each other with diode D7 negative pole with resistance R 3 series connection points; diode D7 positive pole links to each other with the input power supply, and the parallel connection point of resistance R 4, R5 inserts described self-energizing switches circuit module.

5, instant heating electric iron as claimed in claim 4, it is characterized in that: described power circuit interface is arranged in parallel the reduction voltage circuit module of resistance R 1 and capacitor C 1 polyphone composition, be connected with the power supply demonstration rectification circuit that diode connected in parallel D1, D2 form, be in series with light emitting diode D13 with diode D2 thereafter; Two electrodes in inductance coil L5 two ends and solder horn duty display circuit that is provided with resistance R 9, light emitting diode D14 composition in parallel.

6, instant heating electric iron as claimed in claim 5 is characterized in that: each module component of described power circuit all is positioned on the same circuit board, and this circuit board is positioned at described handle inside.