CN2149191Y

CN2149191Y - High-effiency electric device for heating one's hand

Info

Publication number: CN2149191Y
Application number: CN 93238006
Authority: CN
Inventors: 沈昌生
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-01-06
Filing date: 1993-01-06
Publication date: 1993-12-15
Anticipated expiration: 2003-01-06

Abstract

The utility model relates to a high-efficiency electric heating device for hands. In the utility model, two pie-shaped sealing metal boxes which matches with each other are filled with high melting point materials, and the two pie-shaped sealing metal boxes are fixed with an electric heater and an insulating layer into integration; the utility model utilizes the principles of high temperature phase change latent heat and the enhancement of specific heat after being melted into liquidness to make the energy of the high melting point materials increased by a plurality of times; as a result, the temperature of heating elements is not too high and the storage heat is enlarged, and the service life of the heating elements is extended. The utility model has the advantages of high efficiency, short heating time, long heat-insulating time, light weight, convenient use, high safety and power saving.

Description

High-effiency electric device for heating one's hand

This utility model relates to a kind of electric heating hand warmer that can be incubated for a long time (or claiming small-sized electric heating device).

People adopt hot water bag for a long time, scald the kettle class as small-sized heating installation in winter, by saving the warm hands of heat in hot water.But shortcoming is tangible: volume is big, accumulation of heat is few, it is tired and cause scald easily to change SHUIMA.In recent years, existing electrically heated hand warmer comes out, it mainly is made of metal-back, heat-insulation layer, heat storage, electric heater.The employing refractory that its heat storage has, the employing metal derby that has.This type of produces device and comes out and be subjected to people's welcome, and the temperature height must scald one's hand but they all exist just, but long shortcoming of overall warming time, has promptly unresolvedly both thought that accumulation of heat was many well, wants to reduce the contradiction of heating temp again.So employing paraffin is arranged again, low phase-change material accumulation of heat such as sodium acetate scheme is born, the meaning is to utilize its latent heat of phase change, but all non-constant of the actual effect of these schemes, this is to spread out of outward that (the one, temperature difference is minimum because its inner heat is very difficult after the temperature of dielectric surface reduces, the 2nd, the heat conductivity extreme difference), thereby extremely impracticable.

This utility model is just for solving the brand-new design scheme that above-mentioned contradiction proposes, and produced that accumulation of heat is many, heat release slow, volume is little, insulation is of a specified duration, convenient, practical, safe, new electrically heating hand warmer efficiently.

This utility model has reached above-mentioned purpose of design by following technical measures: it is made of housing, heat-insulation layer, insulating barrier, electric heating device, power connector and temperature relay.Its outstanding characteristics are that one pair of pie sealed metal container box is arranged between heat-insulation layer and heating element, install high-melting-point phase-change material * in the box in advance, the fastening connecting hole of using is left in the box outside, with securing member with two boxes and insulating barrier, electrothermal device is fastening to be a heating accumulation of heat integral body, and place the heat-insulation layer center, again by the temperature control effect of temperature relay and the reasonable setting of heat-insulation layer, reach the aggregative indicator that accumulation of heat is many, heat release is slow then.

The many reasons of accumulation of heat are as follows: high-melting-point phase transformation village material will absorb big calorimetric can liquefy, increases greatly when becoming liquid back " specific heat " more solid-state, so it is very big to recept the caloric.Certainly amount of stored heat is just many.Here, latent heat of phase change and solid-state, liquid heat absorption have all obtained effective utilization.

The outstanding advantage of this utility model is: (one) can save a lot of heat energy in small size; (2) can suitably reduce the heat generating core temperature design; (3) obtain the service life of heater members prolonging, (four) make the electric heating hand warmer smaller and more exquisite, convenient, safe, efficiently, neither improve temperature, can prolong the warming time again.

Fig. 1 is this high-efficiency electric-heating hand warmer structural profile:

The metal shell 1 that it is coincide by two halves, insulation aluminosilicate fiber cotton 2, a pair of pie sealed metal container box 3, high-melting-point phase-change material 4, mica paper insulating barrier 5, mica insulation heating wire 6, power connector 7, external power supply drags line 8, outer package ferrule 9, and compact temperature relay 10 and standard fasteners 11 constitute.Two halves metal shell 1 is connected by ferrule 9 encapsulation; To filling aluminosilicate fiber cotton 2 between the heat storage, it plays heat insulation hot insulation effect in the shell; Fill high-melting-point phase-change material 4 in advance in a pair of pie sealed metal container box 3, and by the outside installing hole of reserving of box this to be clamped container and insulation board and electrothermal device be the accumulation of heat integral body of generating heat, mica insulation dividing plate 5, can guarantee good electrical insulation under the high temperature, mica insulation electrical heating wire 6, can reach the thin slice application target, connect when power connector 7 can play energising and remove the benefit of dragging line when warming up hands, power supply drags line to play the energising effect, be connected to 220V electric main socket during electricity consumption, the compact temperature relay is series between heating wire and the connector, when temperature arrives design temperature, outage voluntarily, heating wire just stops heating automatically.

* this material is except that the palpus fusing point is suitable, and still needing possesses the characteristics that no burn into does not have vaporization in the serviceability temperature scope, do not decompose, easily encapsulate.The high-melting-point phase-change material adopts the mixture of Chile saltpeter and potassium nitrate in the present embodiment, and its fusing point can be decided according to using needs to regulate between 160 degree (C)-300 degree (C).

Claims

1, the high-efficiency electric-heating hand warmer, mainly by housing, heat-insulation layer, the high-temperature heat accumulation body, insulating barrier, electric heater, temperature relay, power connector constitutes, and housing is by two that can coincide half of compositions, and the heat-insulation layer filling is in shell and hold between the body, appropriate location in the temperature controller encloser, power connector is fixed in shell wall, it is characterized in that: the high-temperature heat accumulation body between insulating barrier and heat-insulation layer is two pie sealed metal container boxes, dress high-melting-point phase-change material in the box, two box corresponding sites are provided with connecting hole, by connector with electric heater, insulation board and two boxes are fastening to be an integral body.

2, high-efficiency electric-heating hand warmer as claimed in claim 1 is characterized in that the high-melting-point phase-change material is the mixture of Chile saltpeter and potassium nitrate, and its transformation temperature can be regulated in 160 degree (C)-300 degree (C).