CN2212349Y - Automatic thermostatic electric cotton-padded mattress - Google Patents

Abstract

The utility model relates to an automatic thermostatic electric cotton-padded mattress, mainly composed of a rectifier 1, a temperature-sensitive thermostat 2 and a heater 3. The rectifier is positioned near the input ends 1, 2 of the power supply, and the heater 3 is arranged in a blanket. The temperature sensitive thermostat is integrally arranged in a flat metal case with good heat conducting, and a thermal resistor t is closed with the metal case which can be freely put in the heater blanket. The automatic thermostatic electric cotton-padded mattress can automatically and correspondingly change following the temperature change of the environment to keep constant temperature, and the temperature can be regulated by people. The automatic thermostatic electric cotton-padded mattress replaces the previous traditional electric cotton-padded mattress which can not change following the temperature change of the environment.

Description

Automatic thermostatic electric cotton-padded mattress

A kind of can be automatically respective change keeps constant temperature and the people a kind of electrical blanket for temperature adjustment with variation of ambient temperature, and can alleviate and hand over magnetic being harmful to health human body.

Electrical blanket had with change in voltage the heat cool time after midnight of before midnight took place in the past, or on the heated kang of rural area a heatable brick bed powered heating pad heat, the cool cotton-padded mattress cold of a heatable brick bed, and thermal phenomenon not for a long time when rigidly connecting power supply are handing on the magnetic blanket sleep can feel that also body is painful, silly bad sensation such as sleep.

The purpose of this utility model provides a kind of temperature and can become negative feedback to change and the automatic constant-temperature electrical blanket of variation with environment temperature.It can make the bedding bulk temperature tend towards stability.

Accompanying drawing is an electrical schematic diagram of the present utility model.Number in the figure 1.2 is an ac power input end, and frame 1 is a rectifier, and frame 2 is the temperature-sensitive thermosistor, and frame 3 is heating element (being electric bedding wire).W is a variable resistor, t be heat-sensitive coefficients be on the occasion of a thermistor, D is a triode.Rectifier is positioned at power input 1, near 2, heating element 3 is placed on the blanket the inside, the temperature-sensitive thermosistor is whole to be made in a flat box of good heat conductive metal, temperature adjustment resistance has a knob, and knob makes in metal box outside, so that people are used for temperature adjustment, thermistor t is close to can so that heat conduction, and this can freely be placed in the heating element blanket.

Accompanying drawings principle of work of the present utility model.AC power is imported from 1,2 ends, and through rectifier 1 full-wave rectification output DC source, W is a variable resistor, can change the base current of triode D by the resistance of regulating W, has also just changed electric mattress temperature height.T is a thermistor, and its resistance value increased when environment temperature was high, and its resistance reduced when temperature reduced, and the output current of triode D raises along with environment temperature and reduces, and temperature reduces and increases, and causes the cotton-padded mattress bulk temperature to keep steady.When rigidly connecting power supply, thermistor t value is little, and the electric mattress electric current is big, so immersion heater.

The integrated environment temperature of automatic constant-temperature electrical blanket can not changed and changed by voltage, can just not changed by the temperature of heated kang and change yet; The electric mattress temperature reduces when being the voltage rising, and the electric mattress temperature raise when voltage reduced, when heated kang is warm, and the electric mattress cold, when heated kang was cool, electric mattress heat was down to keeping cotton-padded mattress integrated environment temperature steady.And artificial stepless temperature-regulating, immersion heater, it is comfortable to sleep.

Embodiment: with any power electrical blanket is example, the power of rectifier is greater than about one times of electrical blanket normal temperature power, environment temperature may be low when cause rigidly connected energize, thermistor t value is little, power when the electrical blanket real power will surpass normal temperature, help immersion heater like this, littler by about 1/3 with the power electric bedding wire than original electric bedding wire resistance, but the not comparable former line of line length is short.

Claims (1)

1. A kind of automatic constant-temperature electrical blanket, it is characterized in that: it is by rectifier 1, temperature-sensitive thermosistor 2, heating element 3 is formed, and rectifier is positioned near the power input 1,2, heating element 3 is placed on the blanket the inside, the temperature-sensitive thermosistor is whole to be made in a flat box of good heat conductive metal, and thermistor t is close to can, and this can freely be placed in the heating element blanket.

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