CN2684093Y - Safety device for no load burning of electrothermal tube - Google Patents

Abstract

The utility model discloses a safety device for no load burning of electrothermal tube. The structure is that the electric wire is inserted into the metal tube on the electrothermal tube after connected with the thermal fuse. The electric wire is locked on the electrothermal tube after threaded out of the metal tube. When the electrothermal tube has no load burning, the heat energy produced by the no load burning of the electrothermal tube is transferred to the metal tube by the air conduction and convection. The thermal fuse is broken by inducting the high temperature and the current on the electric wire can not flow into the electrothermal tube and the electrothermal tube stops heating to realize the safeguard efficiency for no load burning.

Description

The empty safety device that burns of electrothermal tube

Technical field

The utility model relates to electric type, the empty safety device that burns of particularly a kind of electrothermal tube.

Background technology

As everyone knows, electric heater commonly used or use electrothermal tube firing equipment, when if the empty burning of electrothermal tube phenomenon takes place, its protective device is only with RCCB protective device the most, and its flow process is the empty temperature of burning of electrothermal tube when too high, burn electrothermal tube after, undesired via the RCCB sensor circuit, cut off the power supply, however this protection mechanism not only actuation time slow, and easily cause appliance circuit to damage; And easily cause the danger of electric leakage, the accident that causes the user to get an electric shock; If during situations such as accidentally RCCB breaks down, erroneous judgement, cause that very easily appliance arrangement damage, circuit are cocked off and wait unexpected storms, consequence is hardly imaginable, and urgency is treated and should be improved.

The utility model content

According to the purpose of this utility model, the harm that is taken place when burning at above-mentioned electrothermal tube is empty, provide a kind of electrothermal tube the empty safety device that burns, it is to be made of electrothermal tube, metal tube, electric wire and Thermal Cutoffs etc., after wherein electric wire connects Thermal Cutoffs, penetrate the metal tube inside on the electrothermal tube, pass metal tube again after, be locked on the electrothermal tube; When the phenomenon of empty burning takes place in electrothermal tube; the empty heat energy that is distributed that burns of electrothermal tube; seeing through air transmitted and convection current reaches on the metal tube; Thermal Cutoffs is sensed high temperature and is opened circuit at this moment; electric current on this electric wire can't flow in the electrothermal tube; stop electrothermal tube and continue heating, reach empty protection effect of burning safety.

Description of drawings

Fig. 1 is a three-dimensional appearance schematic diagram of the present utility model.

Fig. 2 is a cross-sectional schematic of the present utility model.

Fig. 3 is an embodiment schematic diagram of the present utility model.

Fig. 4 is an another embodiment schematic diagram of the present utility model.

The specific embodiment

Shown in accompanying drawing 1 and accompanying drawing 2, the utility model is made of electrothermal tube A, metal tube A1, electric wire B and Thermal Cutoffs C, wherein, after electric wire B connects Thermal Cutoffs C, penetrate the metal tube A1 inside on the electrothermal tube A, pass metal tube A1 again after, be locked on the electrothermal tube A; When empty the burning takes place in electrothermal tube A, the empty heat energy that is distributed that burns of electrothermal tube A, seeing through air transmitted and convection current reaches on the metal tube A1, Thermal Cutoffs C senses high temperature and opens circuit at this moment, electric current on this electric wire B can't flow in the electrothermal tube A, stop electrothermal tube A and continue heating, reach empty function of burning safeguard protection;

Shown in accompanying drawing 3 and accompanying drawing 4, power supply F connects RCCB E, is connected to thermostat D; The electrothermal tube A of electric heater H inside is provided with metal tube A1, electric wire B is provided with Thermal Cutoffs C, after penetrating the electric wire B line segment that is provided with Thermal Cutoffs C in the metal tube A1, pass metal tube A1 again and be connected to thermostat D, when the tank of electric heater H is anhydrous, when being electrothermal tube A generation sky burning, see through the empty heat energy that is distributed that burns of air transmitted electrothermal tube A, metal tube A1 temperature inside fuse C senses unusual high temperature, and auto-cutout, this moment, electric current can't flow on the electrothermal tube A, and made electrothermal tube A can't continue heating, reached the function of safeguard protection; Indicator lamp extinguishes simultaneously, notifies the user that empty phenomenon of burning takes place.

Advantage of the present utility model:

1. when no load burning of electrothermal tube, directly cut off the power supply of electrothermal tube, avoid electrothermal tube to continue Heating;

2. prevent that electrothermal tube from burning out damage, cause the accident of its electric leakage;

Reaction time fast, be swift in motion, the very first time cuts off the electricity supply, and prevents empty burning of electrothermal tube and causes other disasters;

4. repair and replacement easily and fast.

Claims (1)

1, the empty safety device that burns of a kind of electrothermal tube, it is made of electrothermal tube, metal tube, electric wire and Thermal Cutoffs, it is characterized in that: behind the electric wire connection Thermal Cutoffs, penetrate the metal tube inside on the electrothermal tube, pass metal tube again after, be locked in electrothermal tube.

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