CN2162754Y - Toy radiator with positive temp. coefficient thermal resistor - Google Patents

Abstract

The utility model provides a resistance toy heater which is mainly composed of a thermistor heating body with a positive temperature coefficient, a heat transferring plate, a heat-insulating layer, an outer housing and a power supply joint. The resistance toy heater only needs to be energized for a plurality of minutes, and a power supply can be cut off. The resistance toy heater can sustain surface temperature to be in a comfortable and stable state for a plurality of hours. If the resistance toy heater is energized for a plurality of minutes, and the power supply is not cut off, the self control of the heating body can cause electric current to achieve a minimum value, and the temperature of the resistance toy heater is sustained and unchanged. The surface structure of the resistance toy heater can be made to form various shapes of animals, fat moppets, etc. The utility model has electricity saving, high safety and no naked flame, and is a late-model heating device which can be used as a toy and can be used for heating.

Description

Toy radiator with positive temp. coefficient thermal resistor

The utility model provides a kind of toy and warmer to become the device of one.

Existing Electric heat accumulator (Chinese patent 90212195.2) is that the employing nickel filament is a pyrotoxin, easily oxidation at high temperature, and the life-span is short, and naked light is arranged, and temperature can not be controlled automatically.

In order to overcome above-mentioned shortcoming, the utility model adopts positive temperature coefficient (PTC) thermistor heater, has temperature automatically controlled function, than more power saving of nickel filament.Not rubescent, the flames of anger of PTC heater adstante febre, safe in utilization.When energising heater generate heat rapidly, this heat energy is transmitted to each position of warmer by the metal heat transfer plate because heat transfer plate insulation material is wrapped in, these heats can only slowly outwards discharge, therefore the heat transfer plate self-temperature also improves rapidly in heating process.When being heated to certain the time, the heater temperature reaches Curie temperature, and at this moment heater and heat transfer plate are in heat balance, because the automatic control effect of heater, at this moment electric current reduces rapidly, no matter be to pull out power supply or do not dial power supply, the temperature in the warmer remains on stable state.Because heater and heat transfer plate connect together, thermal capacity is bigger, and therefore under the insulation effect of heat-insulation layer, the rear surface temperature of cutting off the electricity supply still can keep a few hours constant, reaches the heating purpose.This device adopts the metal heat transfer plate, and the heat that heater is sent is transmitted to each position that shell wraps up, and makes that each position temperature of warmer is more even.Because the shape of heat transfer plate can be any, so shell shape can make toys such as various animals, chubby child, not only when toy but also be warmer.

Warmer structure as shown in the figure, wherein (1) is the PTC heater, (2) are heat transfer plate, (3) are heat-insulation layer, (4) are high temperature resistant packing ring for convex insulate, (5) are the screw of fixing heater and heat transfer plate, (6) are the fixed power source screw that goes between.

It is more than 280 ℃ that PTC heater (1) is selected Curie temperature, and power is decided by whole overall dimensions, and heater can be used monolithic, also can the multi-disc parallel connection, and the heater shape can be used garden shape, also can use square.Heat transfer plate (2) adopts has certain thickness heat conductivility better, certain flexible metal material is arranged, as aluminium, phosphor-copper, stainless steel and other metal materials again.Heat transfer plate is again two electrodes simultaneously up and down, the short circuit of can not colliding, and for this reason, the convex packing ring (4) that the upper and lower surface heat transfer plate is made by the resistant to elevated temperatures electric bakelite that insulate is tightened with screw (5), and heater is clipped in the middle tightly.For the upper and lower surface heat transfer plate is closely contacted with the heater surface silver layer, the upper and lower surface heat transfer plate is smooth in the surface requirements that contacts with heater, from heater bending arbitrarily at a distance.Convenient for the heater location, can become a wherein facing cut of heat transfer plate the degree of depth to be not more than 1 millimeter groove (as shown in the figure).Draw lead and power connection joins at suitable position from the upper and lower surface heat transfer plate, lead and heat transfer plate are with screw (6) fix tightly.

In order to realize the utility model, now lift an example explanation.This warmer is contained on the panda toy, get thickness and be two blocks of aluminium sheets of 5 millimeters, width is 1/3rd of a panda width, the length of last heat transfer plate is that panda head mid point arrives from tail end 25 mm distance, following heat transfer plate makes I shape, intermediate width is identical with last heat transfer plate, and length is distance between upper and lower extremities.Upper limbs and the lower limb shape of four limits of I shape flexible one-tenth panda.If this panda volume ratio is bigger, can adorn two heaters, one another piece is at belly at chest, it is just much of that to adorn a heater if volume is little at central part.As described above heater and heat transfer plate are fixed,, whole device is installed to the panda cavity, power line is received the power connection that is installed in the not obvious place of panda back of the body afterbody, insert insulation material at heat transfer plate lower end extracting power supply cord.A Here it is panda warmer.

This device is as long as insert power supply number minute, and can last for hours makes surface temperature keep stable, comfortable.

Claims (8)

1, semistor toy warmer is characterized in that being made up of for main body heater (1), metal heat transfer plate (2), heat-insulation layer (3).

2, warmer according to claim 1 is characterized in that heater (1) is made up of semistor.

3, warmer according to claim 1 is characterized in that heat transfer plate (2) is in the middle of heater being clamped at by insulation, resistant to elevated temperatures convex electric bakelite packing ring (4) with screw (5) up and down.

4, warmer according to claim 1, it is characterized in that metal heat transfer plate (2) material with heat-conductive characteristic preferably aluminium make.

5,, it is characterized in that the metal material of other good heat conductivity such as the also available phosphor-copper of material, stainless steel of heat transfer plate according to claim 1 or 4 described warmers.

6,, it is characterized in that these two heat transfer plates also are two electrodes simultaneously according to claim 1 or 3 described warmers.

7, warmer according to claim 1 is characterized in that the shape visual appearance structure of heat transfer plate and decides.

8, warmer according to claim 1 is characterized in that the heat-insulation layer material must be insulation, fire-retardant, and heater (1) and heat transfer plate (2) are tightly wrapped, and fills up the space that shell wraps up.