CN2156427Y

CN2156427Y - Dry no-fan electric heater

Info

Publication number: CN2156427Y
Application number: CN 92235569
Authority: CN
Inventors: 孟昭林
Original assignee: Individual
Current assignee: Meng Zhaolin
Priority date: 1992-09-22
Filing date: 1992-09-22
Publication date: 1994-02-16
Anticipated expiration: 2002-09-22

Abstract

The utility model relates to a dry no-fan electric heater, which is characterized in that the frame is composed of an upper side panel and a side panel; an upper insulating plate is arranged on the frame in horizontal direction; th front and the back panels are provided with inner insulating panels; a closed type convection chamber body which is composed of a lower radiation-proof boards is arranged on insulating panels in the horizontal direction; the upper part and the lower part of the closed type convection chamber body is left with an air outlet and an air inlet; the closed type convection chamber body is provided with a fixing frame for fixing electro-heating elements; the frame on the lower part of the air inlet is provided with an element cabin casing; the element cabin casing is vertically provided with insulating plates; a sensor holder provided with a sensor and a holder board provided with a control circuit are arranged on the two sides of the element cabin casing; the upper end board and the bottom cover plate of the element cabin casing are provided with a plurality of ventilation opening. The utility model has the advantages of simple structure, favorable chimney effect, energy saving, low cost, and high safety.

Description

Dry no-fan electric heater

The utility model relates to the air heater with heat generator, and the dry type that especially has heating does not have the fan electric heater.

The problem that the design electric heater at first will solve is complete machine heat extraction, heat conduction and heat transfer medium problem thereof, at present, electric heater is the wet type oil immersed type with regard to its heat conduction, the required medium of heat extraction both at home and abroad, the pipeline of heat is that heating is with oily medium in the heat transferred machine that produces successively, the oily medium of circulation is passed to casing with heat, be dispersed in the air by casing again, so just have following point:

Complete machine manufacturing process complexity because the main heat exchange thing of complete machine is a liquid oils, so just requires the good seal performance of complete machine, and manufacture difficulty is big, the cost height.In addition, poor stability does not meet the fire-fighting requirement, and the fire department regulation does not allow to adopt the oil immersed type electric heater with the building of electric heating, otherwise in case breaking out of fire, consequence is not very imagined.

At above-mentioned situation, the utility model provides a kind of dry type simple in structure, that cost is low, safe and reliable not have the fan electric heater.

The utility model is realized as follows: it comprises heating and the control circuit thereof that produces heat, framework and panel, it be by on, the last thermal insulation board 1 that horizontal direction is settled on the framework 2 that side panel constitutes, the front and back panel 4 that has interior thermal insulation board 6 and 7,5 and the following radiation proof board 8 and 9 installed of horizontal direction form closed convection current chamber casing, casing front and back panel 4, leave exhaust outlet 3 between 5 upper ends and framework 2 top panels, leave air inlet 10 under the case, in in the case or on the lower side the fixedly fixed mount 17 of heating is equipped with in the position, on the framework 2 of the below of air inlet 10 component module housing 11 is housed, upright dress thermal insulation board 14 and 15 and split the sensor frame that sensor is installed 16 of its both sides in it, the frame plate 13 of control circuit is housed, at the upper end plate of component module housing, have a plurality of ventilating openings 12 on the bottom plate.

Operation principle:

When environment temperature be lower than temperature sensor give fixed temperature the time, controllable silicon SCR ₁, SCR ₂Control extremely on the trigger voltage that applies with controllable silicon SCR ₁, SCR ₂Triggering and conducting, will seal in the heating of circuit connect power supply and produce heat, when environment temperature be higher than temperature sensor give fixed temperature the time, the temperature sensor action, its junction closure, closed contact is controlled the utmost point and emitter stage short circuit, controllable silicon SCR with silicon controlled ₁, SCR ₂End, no current flows through heating and does not produce heat, controls according to the set-point that temperature sensor is set up, to guarantee constant by controlling temperature.The heat that when heating is connected, produces, produced the thermal current that boundling rises from bottom to top in the cavity via narrow and prolate under the pressure reduction that the convection current chamber casing internal cause temperature difference forms, under the effect of chimney effect, continuously enter in the air, thereby reach the purpose that heats by exhaust outlet.

The utility model is owing to provide a kind of structure of quickening to strengthen natural convection air, thereby realized not having the problem of oil, no fan heat conduction heat extraction, and the saving energy, can replace the oil immersed type electric heater.It simple in structure, easy to use, because the electronic devices and components in the component module are to work at normal temperatures, working stability is reliable, this equipment noiseless, long service life can realize unmanned, automatic constant-temperature.

Describe most preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing.

Fig. 1 is a structural representation of the present utility model.

Thermal insulation boards in thermal insulation board on 1,2 frameworks, 3 exhaust outlets, 4 front panels, 5 rear boards, 6 and 7,8 and 9 times radiation proof boards, 10 air inlets, 11 component module housings, 12 ventilating openings, 13 frame plates, 14 and 15 thermal insulation boards, 16 sensor frames, 17 fixed mounts.

Fig. 2 is control circuit figure,

SCR ₁, SCR ₂Controllable silicon, CJ ₁And CJ ₂Temperature sensor, the Rfe heating.

Dry type do not have the fan electric heater by with sheet material through being processed into casing and heating in it is installed and control circuit that component module and interior electronic device thereof are formed constitutes.

It is by on, the framework 2 that constitutes of side panel and horizontal direction be installed on it on thermal insulation board 1, front and back have the front and back panel 4 and 5 of interior thermal insulation board 6 and 7, and the width installed of horizontal direction has constituted closed convection current chamber casing less than the following radiation proof board 8 and 9 of frame width, leave certain interval as exhaust outlet 3 between front and back panel 4,5 upper ends of casing and framework 2 top panels, air inlet 10 is left in casing below, in casing in or on the lower side the position the fixedly fixed mount 17 of heating is housed; Heating is around chip tubulose electrothermal piece, it is non-standard that its model is chosen as GYQ-2(), heating on the fixed mount 17 be according to power division vertical direction by height under the five equilibrium power not on low arrangement, its power and size can be decided as required, certain interval is left as air inlet 10 in the casing below, on the following square bearer 2 of air inlet 10, component module housing 11 is housed, upright dress thermal insulation board 14 and 15 in it, being equipped with respectively in the both sides of thermal insulation board 14 and 15 can temperature sensor mounted sensor stand 16, the frame plate 13 of control circuit is installed, on the upper end plate of temperature control cabin housing 11, have a plurality of ventilating openings on the bottom plate.Said it can be the aluminium heat radiation thin slice of φ 35mm around sheet during for φ 750mm when its size φ 16mm is long around the chip tubular electrothermal element, and heating surface heat equilibrium temperature is lower than 200 ℃, when casing is 800 * 600 * 200mm ³, its power is 2500 watts, air inlet and exhaust outlet are of a size of 800 * 50 * 200mm ³, 0.5 meter of its wind scooter per second, the thermal current flow is 150m per hour ³, its flow process can reach outer 2 meters of machine.The casing temperature is pressed normal temperature to 80 ℃ slope distribution from bottom to top, and casing does not have high temperature.Said each panel, thermal insulation board can be common sheet metal through being processed into; Last thermal insulation board 1 is made the welding of V-shape horizontal direction, and it is heat insulation good by reaching to be convenient to thermal current; The control circuit of installing on the said frame plate 13 is by two tunnel resistance R ₁, diode D and temperature sensor contact CJ ₁, CJ ₂The sequential circuit and the controllable silicon SC that form ₁, SC ₂Fuse R behind the Xiang Binglian in being connected on circuit ₁₁Form with heating Rfe, the control circuit element is few, and at room temperature works, and temperature sensor is placed in thermal source component module far away, the collection indoor temperature that it can be real-time.This dry type does not have the fan electric heater all can realize unmanned for the machine room and the office of need constant temperature, and automatic constant-temperature is safe and reliable, and can make various series of products, and meets the fire-fighting requirement, is a kind of comparatively ideal heating of house equipment.

Claims

1, a kind of dry type does not have the fan electric heater, comprise heating and control circuit thereof, framework, panel, it is characterized in that the last thermal insulation board 1 that is installed on it by framework last, that side panel constitutes 2 and horizontal direction, the front and back panel 4,5 of thermal insulation board 6,7 in the band, and the following radiation proof board 8 of horizontal direction installation and the 9 closed convection current casings of forming, leave exhaust outlet 3 between casing front and back panel 4,5 upper ends and framework 2 top panels, leave air inlet 10 under the case, in the casing in or on the lower side the position the fixedly fixed mount 17 of heating is housed; On the following square bearer 2 of air inlet 10 component module housing 11 is housed, upright dress thermal insulation board 14 and 15 and split the sensor frame 16 of the sensor installation of its both sides is installed the frame plate 13 of control circuit in it, has ventilating opening on the upper head plate of component module housing, the bottom plate.