CN2191371Y - High-efficient energy-saving safety electric heater - Google Patents

Abstract

The utility model discloses a high-efficient energy-saving safety electric heater. The utility model is provide with at least two electric heating pipes which can be respectively installed in the corresponding cavity body which can be formed by metal pipes, and leading wire can be connected with a power supply end through a horsepower unit switch. The cavity body can be plugged on radiation fins on which the edge of the through hole of the cavity body having a cylindric convex edge can be installed corresponding to the radiation fins, and the convex edge, the through hole and the outer wall of the cavity body can do tight fit. A supporting post which is installed on the cavity body is also provided with a bottom open, the top is provided with a meter outer cover of a convection window, and the radiation fins can also be provided with seam-shaped fins whose double faces are convex.

Description

High-efficient energy-saving safety electric heater

The utility model belongs to a kind of heat-exchanger rig, particularly a kind of efficient energy-saving safe electric heater.

Electric heater is the heating system that occurs in recent years, and existing electric heater is because its design feature determines that its radiating mode is that radiation is main, the oily medium electric heater that generally adopts particularly, and it is to be made of electrothermal tube, Oil Guide chamber and fin.Its operation principle is after by electrothermal tube oil being heated, heat to be passed to fin, carries out heat exchange by fin and surrounding air again.Owing to oil heating power consumption is big and heat radiating fin structure determine that its heat exchange mode is that radiation is main, so oily medium electric heater heat exchange efficiency is low, power consumption greatly; In addition, oily medium is originally as combustibles, and therefore, there is unsafe factor in oily medium electric heater, the phenomenon of also may blasting under abnormal conditions.

The purpose of this utility model is to overcome the deficiencies in the prior art part, and the efficient energy-saving safe electric heater of a kind of heat exchange efficiency height, energy-conservation and work safety is provided.

The utility model is achieved in that it has two electrothermal tubes at least, said electrothermal tube is installed in respectively in corresponding with it cavity that is made of metal tube, and its lead-in wire connects power end by the power combination switch, said cavity is inserted in the through hole corresponding with it on the fin, there is a cylindric chimb at the corresponding through hole edge that cavity is installed on the said fin, and chimb and through hole and chamber outer wall also are equipped with the metal housing that the bottom is uncovered, the top has the convection current window for closely cooperating on the pillar that is installed on the cavity.

According to above-mentioned efficient energy-saving safe electric heater, on fin, also be processed with the bar seam shape fin of two-sided projection.

Because cavity and fin closely cooperates and contact area is big, make the inned coefficient height of this electric heater; On fin, be processed with two-sided raised item seam shape fin, can increase the efficiently radiates heat area again, improve the heat exchange amount; And the structure of this electric heater determines that its heat exchange mode is that convection current is main.Therefore, the heat exchange efficiency of this electric heater is high and energy-conservation; In addition, the characteristics that also have adjustable power, work safety.

The drawing explanation:

Fig. 1 is the axonmetric chart of the utility model (two electrothermal tubes);

Fig. 2 is the front view of the utility model (two electrothermal tubes);

Fig. 3 is the A-A cutaway view Amplified image of Fig. 2;

Fig. 4 is the front view of the utility model (three electrothermal tubes).

Provide embodiment of the present utility model below in conjunction with accompanying drawing:

Embodiment 1:

As accompanying drawing 1,2, shown in 3, cavity 3 and one group of fin 7 that this electric heater has two electrothermal tubes 4 and made by thin metallic tubd, wherein electrothermal tube 4 is inserted in the cavity 3 and its lead-in wire connects power end by power combination switch 5, said fin 7 upper punches are pressed with two through hole 7a, the edge of through hole 7a is flange to the left, and cylindric chimb 7b of formation behind the drawn, also punching press has respectively projection and projection and staggered seam shape fin 7c to the left to the right on fin 7, described cavity 3 be inserted in the through hole 7a corresponding on the fin 7 with it and through hole 7a and chimb 7b and cavity 3 outer walls for closely cooperating, to reduce thermal resistance, between cavity 3, be welded with cavity connecting plate 6, on the cavity 3 of bottom, also be welded with pillar 1, be processed with screw and by screw metal housing 2 be installed on pillar 1, the bottom of described outer cover 2 is uncovered, the gap location of the corresponding adjacent fin 7 in top has convection current window 8.

Embodiment 2:

As shown in Figure 5, cavity 3 and one group of fin 7 that this electric heater has three electrothermal tubes 4 and made by thin metallic tubd, wherein electrothermal tube 4 is inserted in the cavity 3 and its lead-in wire connects power end by power combination switch 5, said fin 7 upper punches are pressed with three through hole 7a, the edge of through hole 7a is flange to the left, and cylindric chimb 7b of formation behind the drawn, also punching press has respectively to the left and projection and staggered seam shape fin 7c to the right on fin 7, described cavity 3 is inserted in the through hole 7a corresponding with it on the fin 7 and through hole 7a, chimb 7b and cavity 3 outer walls are for closely cooperating, to reduce thermal resistance, between cavity 3, be welded with cavity connecting plate 6, on the cavity 3 of bottom, also be welded with pillar 1, be processed with screw and by screw metal housing 2 be installed on pillar 1, the bottom of outer cover 2 is uncovered, the gap location of the corresponding adjacent fin 7 in top has convection current window 8.

This electric heater also can adopt four electrothermal tubes and have four through holes on fin, and other structure is described with above-mentioned embodiment.

Claims (4)

1, a kind of efficient energy-saving safe electric heater, comprise electrothermal tube, cavity and fin, it is characterized in that, described electrothermal tube (4) is at least two and be installed in respectively in corresponding with it cavity (3) that is made of metal tube, and its lead-in wire connects power end by power combination switch (5), said cavity (3) is inserted into fin (7) and goes up in the through hole (7a) corresponding with it, said fin (7) is gone up corresponding through hole (7a) edge that cavity (3) is installed a cylindric chimb (7b), and chimb (7b) and through hole (7a) and cavity (3) outer wall are for closely cooperating, pillar (1) is installed on cavity (3), and it is uncovered that the bottom also is installed on pillar (1), the top has the metal housing (2) of convection current window (8).

2, efficient energy-saving safe electric heater according to claim 1 is characterized in that, also is processed with the bar seam shape fin (7c) of two-sided projection on fin (7).

3, efficient energy-saving safe electric heater according to claim 2 is characterized in that, the fin (7c) of described projection to the left and protruding to the right fin (7C) are staggered.

4, according to claim 1 or 2 or 3 described efficient energy-saving safe electric heaters, it is characterized in that the position of described window (8) is corresponding with the gap location of adjacent fin (7).

Images