CN100424424C

CN100424424C - Energy-saving electric heating device of air-convection type

Info

Publication number: CN100424424C
Application number: CNB2005100852337A
Authority: CN
Inventors: 余式正
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-22
Filing date: 2005-07-22
Publication date: 2008-10-08
Anticipated expiration: 2025-07-22
Also published as: CN1710342A; WO2007009398A1

Abstract

The present invention relates to an energy-saving electric radiator for convection heating by using air, which is characterized in that metallic thin bands are used for replacing the original resistance wires or other electric heating materials to make a heating body reciprocally hung on ceramic hanging brackets on both sides of a casing according to the horizontal direction, air is directly heated by two to three layers from top to bottom without using intermediate media in general, the ceramic hanging brackets are obliquely installed so that a certain oblique angle is kept by the width direction of the heating body, convenience is brought to a person to contact ascending air and air convection, the upper part of the heating body is provided with an air guiding plate with an oblique angle about 45 DEG, wherein the air guiding plate is used for guiding hot air to escape from a shutter-shaped hot air outlet at the front part of the electric radiator, and the temperature of the heating body is about 400DEG. C. convection is automatically generated by the hot air by using the principle that air is expanded after the air is heated and pressure is increased, the effect of forced ventilation is achieved without forced ventilation, and the outside of the present invention is provided with a protective casing.

Description

The energy-saving electric heater of cross-ventilation type

Affiliated technical field

The present invention is a kind of energy-saving electric heater that utilizes cross-ventilation heating, and technical field belongs to daily life field.

Background technology

Adopting electrically heated heating system to conclude roughly at present has: low-temperature floor radiant heating, (heating cable) heating of ceiling Electric radiant Heating Film and three kinds of patterns of vertical radiator heating.In fact indoor heating is exactly by heating equipment indoor temperature to be raise, and the rising of indoor temperature then depends on the convection current of room air.Low-temperature floor radiant heating is because every one deck floor, heat distributes slowly, is unfavorable for the convection current of air; Ceiling heating is then risen because of hot-air, and actual is the floor of heating next level, also is unfavorable for the heat exchange and the convection current of air, so weak effect, the expense height.Vertical radiator heating system generally adopts oil or water to make intermediate medium, need be heated to higher temperature to intermediate medium, the heat concentration of local, and vertical structure also is unfavorable for the heat exchange of air, therefore same power consumption is big, weak effect, and it is just not warm to leave electric heater.This shows that electric heater heating just requires the convection current as early as possible of indoor air in order to guarantee indoor good heating effect, and room air is rapidly heated; In order to save the energy as far as possible, then require the efficient improve electricity-thermal conversion efficiency as far as possible and carry out heat exchange, and electric heater must make indoor temperature even with air, avoid the concentration of local of heat, need indoor air convection too.The objective of the invention is to create a kind of cross-ventilation that utilizes and carry out heating, indoor intensification is quick, has good heating effect, and electricity-thermal conversion efficiency and all extra high energy-saving electric heater of efficient that carries out heat exchange with air.

Summary of the invention

In order to overcome the shortcoming of existing electric heater, the invention provides and a kind ofly utilize natural convection air and need not forced ventilation, have extra high electricity-thermal conversion efficiency and carry out the energy-saving electric heater of the efficient of heat exchange with air.

The technical scheme in the invention for solving the technical problem is:

Utilize metal sheet band to replace in the past resistance wire or other thermo electric materials to make calandria; the pottery that back and forth is suspended on the shell both sides by horizontal direction hangs on the carriage; on general; following layer 2-3; need not by intermediate medium directly to add hot-air; pottery hangs carrier tilt and installs; make calandria width and horizontal direction keep certain inclination angle; be convenient to contact the convection current of the air and the air of rising; the calandria top is provided with the air guide plate of 45 ° of about inclinations; the guiding hot-air is overflowed from the hot-air gas outlet of electric heater the place ahead blind shaped; about about 400 ℃ of the temperature of calandria; expand after utilizing air to be heated, the principle that pressure increases makes hot-air produce convection current automatically; need not the effect that forced ventilation just can reach forced ventilation, the outside is a protecting sheathing.

Useful effect of the present utility model is:

1. the thickness of metal sheet band calandria quite approaches and has suitable width, and the heat that himself consumes almost can be ignored, and electricity-thermal conversion efficiency is the highest; Calandria has enough big heating area again simultaneously, can contact with air and satisfy cross-ventilated requirement to greatest extent according to fullest calandria is installed, and calandria and air carry out the most effective of heat exchange, reach purpose of energy saving.

2. the serviceability temperature of metal sheet band calandria is approximately about 400 ℃; itself is difficult for oxidization burning loss; so long service life; the normal use has the semipermanent life-span; can use equally with traditional radiator, calandria is within the shell and is protected, and is not fragile; the shell non-scald on hand uses safer.

3. hot-air guide plate and hot-air gas outlet adopt athermanous material to make, select for use heat-barrier material heat insulation in the place of hot-air process, the heat that calandria is sent is almost passed to air all, improves the temperature of hot-air, reaches as high as more than 90 ℃, increase the pressure differential of hot and cold air, strengthen the convection current of air, need not the effect that forced ventilation just can reach forced ventilation, reduced the energy loss of pressure fan, also do not produce noise, be beneficial to sleep and rest; In addition, utilize the guide effect of hot-air heat-conducting plate, electric heater can adopt multiple mounting means, both removable use, but also wall hanging is installed, so embed wall, do not take the interior space.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the structural representation of the invention process example

Fig. 2 is that pottery that calandria is suspended on the shell both sides hangs the schematic diagram on the carriage.

Among the figure: wherein: 1---protecting sheathing, 2---the metal sheet band calandria, 3---the right pottery of calandria hangs carriage, 4---hot-air guide plate, 5---the hot-air gas outlet, 6---the cold air air inlet, 7---the left side pottery of calandria hangs carriage.

Concrete implementation example

According to Fig. 2, at first metal sheet band calandria 2 back and forth is suspended on left and right pottery by certain interval and hangs on the carriage 7,3, then left and right pottery is hung carriage 7,3 is fixed to shell 1 by Fig. 1 both sides.In order to improve contacting of calandria and air, pottery hangs when carriage is packed shell into and keeps carriage plane and horizontal direction to have certain angle of inclination, the metal sheet band calandria is had a certain degree at width and horizontal direction shape, and cold air rises with regard to the Direct Contact Heating body.General calandria can hang layer 2-3, cold air enters electric heater from the air inlet 6 of below, touch after the calandria 2 for the first time, just absorb the heat of calandria, temperature rises, volumetric expansion, produce the pressure that rises, through upper strata heating, supercharging, hot-air reaches the highest temperature and maximum unlifting pressure, rises rapidly again.After hot-air rises to hot-air heat-conducting plate 4, just be folded to last the place ahead of shell, 5 overflow from the hot-air gas outlet.Use hot-air heat-conducting plate 4 guiding hot-airs to overflow, just can adopt suspension type to install and embedded installation from the place ahead.In the outside, gas outlet, hot-air mixes with room air, and temperature is reduced to the temperature of general heating installation, so sensation is the same comfortable with general heating installation.

The hot-air guide plate 4 of calandria top and hot-air gas outlet 5 adopt heat-barrier material to make, and all take provision for thermal insulation in the place of hot-air process, and its effect is that the heat that prevents hot-air is passed to metal shell.Just mean that air obtains heat and reduces because metal shell obtains heat, the heat exchanger effectiveness of calandria and air reduces greatly; The second, though the metal shell temperature raises, just produce amount of localized heat and concentrate and carry out heat exchange with air hardly, this is the disadvantage of many electric heaters; The 3rd, if hot-air passes the gas outlet of metal, will pass to metal shell to heat, reduced the temperature of hot-air, the having a narrow range of temperature of hot-air and cold air, air just can not get up in convection current.Adopt heat-barrier material to make just because of air guide plate 4 and hot-air gas outlet 5, provision for thermal insulation is all taked in place in the hot-air process, cross-ventilation is quickened, indoor quick heating, electric heater is once coming up for the electric heating air, do not have inertia, need not to adopt forced ventilation to strengthen the convection current of air, just can reach the effect of forced ventilation as in the past electric heater.

Because about about 400 ℃ of the temperature of calandria itself, except long service life, beyond the Maintenance free, because calandria is a low-resistance material, be again to hang to install, insulation is good, not water funk spattering, can be used for indoor heating, the also suitable heating that is used in the bathroom need not to be provided with the safeguard procedures that waterproof is spattered.

The outermost of electric heater is that protecting sheathing 1 can adopt metal material, also can adopt the engineering plastics manufacturing.According to different use occasions, design different shapes.Rectangle for example, the below perforate of shell is as the air inlet of cold air, and the usefulness of two holes as suspension is opened at the back side.If portable electric heater is then installed four wheels again below shell, be convenient to move.

Because the electric heater cross-ventilation is fast, quick heating can be opened electric heater again after the room owner enters house; Can also open electric heater at low power consumption, indoor heating.Whole room is used as heat storage, arrived peak of power consumption, perhaps after owner's working, close electric heater, though indoor temperature slowly reduces, the accumulation of heat effect owing to the room still can keep the required temperature of heating.Utilize whole room as heat storage, compare with the accumulation of heat effect of heat accumulating type electric heater, the accumulation of heat effect is not poor, and the characteristics that heating is quick, efficient is high, price is low then are very significant.

Whole electric heater simple in structure, volume is little, and is in light weight, and cost is low.

Claims

1. cross-ventilation type energy-saving electric heater, the skin of described electric heater is a shell, it is characterized in that: adopt metal sheet band to make calandria (2), calandria (2) hangs on the carriage (3) by the pottery that horizontal direction back and forth is suspended on the enclosure both sides, calandria hangs 2 layers or 3 layers from top to bottom, need not by intermediate medium directly to add hot-air, pottery hangs carriage (3) and tilts to install, make calandria width and horizontal direction keep certain inclination angle, be convenient to contact the convection current of the air and the air of rising, the top of calandria (2) is provided with hot-air guide plate (4) the guiding hot-air of 45 ° of inclinations and overflows from the hot-air gas outlet (5) of described electric heater the place ahead blind shaped, the serviceability temperature of calandria is 400 ℃, expand and the principle of air unlifting pressure increase after utilizing air to be heated, make air produce convection current automatically, need not the effect that forced ventilation just can reach forced ventilation.

2. cross-ventilation type energy-saving electric heater according to claim 1 is characterized in that described hot-air guide plate (4) and hot-air gas outlet (5) adopt heat-barrier material to make, and all selects for use heat-barrier material heat insulation in the place of hot-air process.