CN87212519U

CN87212519U - Simple power-saving electric iron

Info

Publication number: CN87212519U
Application number: CN 87212519
Authority: CN
Inventors: 沈明华
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-11-25
Filing date: 1987-11-25
Publication date: 1988-09-14

Abstract

The utility model discloses a simple power-saving electric iron, comprising an electric iron sold in market, a micro switch and a transistor. When the electric iron lies idle, the energy consumption of the electric-heating element is one quarter of the original. The utility model has the advantages of energy saving, high work efficiency, preventing the soldering-iron head from overheating and avoiding electronic element damaged by overheating.

Description

Simple power-saving electric iron

The utility model relates to a kind of improvement of electric heater.

Commercially available electric iron owing to be length than weld interval its standby time, thereby has been hidden three big shortcomings in actual use:

1. the unnecessary waste of electric energy.

2. the solder horn temperature is too high, causes the oxidation of solder horn " to burn " shadow to death easily

Ring the work efficiency of welding.

3. overheated solder horn causes the mistake of integrated circuit and electronic component easily when welding

Cross cause thermal damage.

The objective of the invention is to overcome the above-mentioned shortcoming of city's pin electric iron, design and a kind ofly not only can save energy, but also can prevent the plain type energy-saving electric iron that solder horn is overheated.

Design of the present invention is such: when electric iron is in nominal situation, can power by full voltage; When electric iron is in idle state, can makes in the circuit by a microswitch and insert a transistor---play step-down, current limliting, the heating of electric iron is under the operating mode of low current and works at this moment.As long as select suitable transistor to mate with it according to the watt level of electric iron, the power of its heating of electric iron that is in the attitude of leaving unused is reduced greatly, only be original about 1/4th; Shortcoming " is burnt " in the thermal oxide of crossing that just can overcome solder horn to death; The mistake cause thermal damage of integrated circuit and electronic component in the time of just can avoiding welding.

Illustrate content of the present invention below in conjunction with accompanying drawing:

Accompanying drawing is the said plain type energy-saving electric iron of the utility model (internal heat type),

Wherein:

1---solder horn 7.---electric iron handle.

2---housing

3---heating

4---the flatiron core print seat

5---microswitch

6---transistor

A, O, B are respectively the contact of microswitch

Housing 2 is formed the flatiron fuse with heating 3, can insert mica sheet or quartz sand in the gap between the two, guarantee the requirement of electric insulation, solder horn 1 is fastened on an end of housing 2, and the other end of housing 2 inserts in the flatiron core print seat 4, and flatiron core print seat 4 is connected with electric iron handle 7 again, in the middle of electric iron handle 7, embed a microswitch 5, have three contacts on the microswitch 5 at least,, between contact A, B, insert a transistor 6 as A, O, B.Insert the phase line (or center line) of external power supply on the O of contact, the center line of external power supply (or phase line) joins with an end of heating 3, and the contact A of the other end of heating 3 and microswitch 5 is connected.

When microswitch was connected O, A, heating 3 is under full voltage (220 volts) operating mode worked, and needed preheating 3～5 minutes for cold electric iron usually, got final product operate as normal;

When electric iron was idle, microswitch was connected O, B, and access transistor 6 in the circuit, because step-down, the metering function of transistor 6 be in low current under heating 3 and work, its energy consumption only is flat-out 1/4th, has prevented the overheated of solder horn effectively.

Be in the electric iron of work under the low current, still have the ability of molten tin, can be used to weld the electronic component that those were subject to cause thermal damage, thereby improve the electric iron universality.

The said microswitch of the utility model can be KB type series of products (as KB-2 etc.) or KND type series of products, also can be with KWX type series of products (being the commercially available prod).

The said transistor of the utility model can be a kind of diode usually, can select according to the watt level of electric iron.Require working inverse voltage＞250 volt of diode, be advisable with 250～400 volts; The forward operating current of diode will be complementary with the watt level of electric iron, generally selects between 0.1 peace～5 peaces.For example:

For 20 watts electric iron, alternative transistor has 2CP15,2CP16,2CP17,2CP18,2CP52E, 2CZ52F, 2CP45,2CP45A, 2CP46,2CP46A etc., its working inverse voltage＞250 volt, and the forward operating current is 0.1 peace.

For 75 watts electric iron, alternative transistor has 2CP31F, 2CP31G, 2CP23,2CP24,2CP32F, 2CP32G, 2CP3,2CP4 etc., its working inverse voltage＞250 volt, and the forward operating current is 0.25～0.4 peace.

For 200 watts electric iron, alternative transistor has 2CP106,2CP107, and 2CZ55E, 2CZ55F etc., its working inverse voltage is 300 volts～400 volts, the forward operating current is 1 peace.

The utility model also applicable to external heated electric iron, also can be used for electric cup, electric iron one class electric heater both applicable to inner heating type electric iron simultaneously.

The utility model compared with prior art has the following advantages:

1. energy-conservation: when electric iron (or electric heater) left unused, its power consumption only was original 1/4th.

2. can prevent that solder horn from crossing thermal oxide and " burning to death ", improve the work efficiency of welding.

3. can under lower power, weld, prevent the mistake cause thermal damage of electronic component.

In a word, the utility model only increases a spot of cost (microswitch, diode each 1), but has obvious improvement on the basis of original commercially available electric iron, and the cost that is increased very soon can be energy-conservation and improve and obtain compensation in the work efficiency.

Claims

1, a kind of plain type energy-saving electric iron, usually combine by solder horn 1, housing 2, heating 3, flatiron core print seat 4, electric iron handle 7 parts, of the present utility model being characterised in that embeds a microswitch 5 and transistor 6 at the middle part of electric iron handle 7, transistor 6 is connected between contact A, the B of microswitch 5, the contact 0 of microswitch 5 is connected with the phase line or the center line of external power supply, and contact A is connected with an end of pressing thermal element 3.

2, according to the said electric iron of claim 1, its feature microswitch can be KB type series of products, and KND type series of products also can be KWX type series of products.

3, according to the said electric iron of claim 1, its characteristic crystal pipe can be a kind of diode, is advisable with 250～400 volts in its working inverse voltage＞250 volt, its forward operating current should be complementary with the watt level of electric iron, generally can select between 0.1 peace～5 peaces.