CN106382742A

CN106382742A - Efficient air heater

Info

Publication number: CN106382742A
Application number: CN201610778278.0A
Authority: CN
Inventors: 王太峰
Original assignee: YUTAI ANTI-EXPLOSION ELECTRIC HEATER Co Ltd ZHENJIANG
Current assignee: YUTAI ANTI-EXPLOSION ELECTRIC HEATER Co Ltd ZHENJIANG
Priority date: 2016-08-30
Filing date: 2016-08-30
Publication date: 2017-02-08

Abstract

The invention discloses an efficient air heater. An outer shell is provided with an air inlet. An inner cavity of an inner shell serves as an air outlet cavity, and an air outlet is formed in the upper end of the inner cavity of the inner shell. A tubular resistance element is arranged in the middle of the air outlet cavity. Air flows through a communication cavity at the lower end of the outer shell and the inner shell from the air inlet of the outer shell and enters the air outlet cavity inside the inner shell. The air in the air outlet cavity flows towards the air outlet simultaneously from the inside and outside of the tubular resistance element, and is heated by the resistance element when flowing through the resistance element. The heated hot air directly flows out of the air outlet and does not make contact with the outer shell, an air inlet cavity inside the outer shell serves as a heat insulation layer at the same time to prevent heat dissipation, and the air inside the outer shell makes contact with the inner shell and can be primarily heated. The efficient air heater is simple in structure, reliable in heating performance and high in work efficiency.

Description

Efficient gas heater

Technical field

The present invention relates to a kind of efficient gas heater, belong to electric heater unit field.

Background technology

, using rod dress heating material heating, heating surface (area) (HS is little, heating effect when gas is heated by heater for conventional heater Rate is low, and heat easily distributes, and need to increase very thick furnace wall, heat-insulation layer etc. for solving problem above, and energy and material consumes high, production Manufacturing cost is high, complex process, and the area that takes up room is wide, and using effect does not reach target.

Content of the invention

The technical problem to be solved is to provide a kind of efficient gas heater it is desirable to be not required to increase heat-insulation layer, Structure is simple, and the efficiency of heating surface is high.

The efficient gas heater of the present invention, including outer tubular envelope, inner housing, shell body, inner housing pass through upper and lower company Fishplate bar, be fixedly connected it is characterised in that：Shell body, inner housing lower end have connection shell body, the connection chamber of inner housing；Shell Body is provided with air inlet, and the gas channel that air inlet passes through between inner housing, shell body is communicated to downwards connection chamber, on shell body End seal is closed；It is outlet chamber inside inner housing, outlet chamber upper end connection gas outlet, intermediate arrangement is provided with longitudinal electrical resistance element；Electricity Resistance element passes through electrode) it is connected with externally fed facility；

Described resistive element is tubular structure, and tubular structure upper/lower terminal connects communication connection chamber and outlet chamber respectively；

Described resistive element is made up of the tubular structure of at least parallel longitudinal spread configuration, and resistive element lower end connects To electrode, upper end concatenation formation heating element heater；

Described upper and lower connecting plate also have upper and lower insertion into and out of pore；

Described shell body, inner housing upper/lower terminal have sealing cover；

Described gas outlet, upper sealing cover material are 304 stainless steels, and lower cover material is Q235 steel.

The efficient gas heater of the present invention, shell body arranges air inlet, and inner casing intracoelomic cavity is as outlet chamber and in upper end Setting gas outlet, outlet chamber middle setting resistance tube element, gas flows downwardly through shell body, inner housing from shell body air inlet The outlet chamber in inner housing is entered, simultaneously from resistance tube element internal, outside flow direction in outlet chamber behind the connection chamber of lower end Gas outlet, also contacts area is big；Hot-air after heating is directly flowed out from gas outlet and is not contacted with shell body so that shell Internal inlet chamber prevents heat from distributing simultaneously as thermal insulation layer, and the gas in shell body is contacted with inner housing and can also obtain tentatively Heating, structure is simple, and heating properties are reliable, high working efficiency.

Brief description

Fig. 1 is the efficient gas heater plane structural representation of the embodiment of the present invention.

Specific embodiment

As illustrated, a kind of efficient gas heater, including outer tubular envelope 1, inner housing 2, shell body 1, inner housing 2 lead to Cross upper and lower connecting plate 3,4 to be fixedly connected, shell body 1, inner housing 2 lower end have connection shell body 1, the connection chamber 5 of inner housing 2； Air inlet 6 is provided with shell body, the gas channel that air inlet 6 passes through between inner housing 2, shell body 1 is communicated to downwards connection Chamber 5, shell body 1 upper end closed；Inner housing 2 is internal to be outlet chamber 7, outlet chamber 7 upper end connection gas outlet 8, middle by least one The tubular structure composition resistive element 9 of the parallel longitudinal spread configuration of root；Resistive element 9 lower end is connected to electrode 10, and upper end concatenates Form heating element heater, electrode 10 is connected offer power supply with externally fed facility；Between inner housing 2, shell body 1 constitute have heat-insulated The gas channel of layer function；Resistive element 9 is tubular structure, and tubular structure upper/lower terminal connects communication connection chamber 5 respectively and goes out Air cavity 7, gas some flows through the tubular structure inner space of resistive element 9, and a part flows through the tubular structure of resistive element 9 Space outerpace；Upper and lower connecting plate 3,4 also have upper and lower insertion into and out of pore；Shell body 1, inner housing 2 upper/lower terminal tool There is sealing cover 11,12；Gas outlet 8, upper sealing cover 11 material be 304 stainless steels, can bear higher temperature without aoxidizing, corruption Erosion, lower cover 12 material is Q235 steel, can bear enough stream pressures.

The efficient gas heater of the present invention, shell body arranges air inlet, and inner casing intracoelomic cavity is as outlet chamber and in upper end Setting gas outlet, outlet chamber middle setting resistance tube element, gas flows downwardly through shell body, inner housing from shell body air inlet Enter the outlet chamber in inner housing behind the connection chamber of lower end, give vent to anger from the inside and outside flow direction of resistance tube element in outlet chamber simultaneously Mouthful, also contacts area is big；Gas flows through the hot-air after resistive element resistive element heating directly from gas outlet outflow Do not contact so that the inlet chamber in shell body prevents heat from distributing simultaneously as thermal insulation layer with shell body, the gas in shell body Contact with inner housing and can also obtain preliminary heating, structure is simple, and heating properties are reliable, high working efficiency.

Claims

1. a kind of efficient gas heater, including outer tubular envelope（1）, inner housing（2）, shell body（1）, inner housing（2）Pass through Upper and lower connecting plate（3）、（4）Be fixedly connected it is characterised in that：Shell body（1）, inner housing（2）Lower end has connection shell body （1）, inner housing（2）Connection chamber（5）；Shell body（1）It is provided with air inlet（6）, air inlet（6）By inner housing（2）, shell Body（1）Between gas channel downwards be communicated to connection chamber（5）, shell body（1）Upper end closed；Inner housing（2）Internal is to give vent to anger Chamber（7）, outlet chamber（7）Upper end connection gas outlet（8）, intermediate arrangement is provided with longitudinal electrical resistance element（9）；Resistive element（9）Logical Cross electrode（10）It is connected with externally fed facility.

2. efficient gas heater according to claim 1 it is characterised in that：Described resistive element（9）For tubular structure, Tubular structure upper/lower terminal connects communication connection chamber respectively（5）And outlet chamber（7）.

3. efficient gas heater according to claim 2 it is characterised in that：Described resistive element（9）By at least one The tubular structure composition of parallel longitudinal spread configuration, resistive element（9）Lower end is connected to electrode（10）, upper end concatenation formation heating Element.

4. efficient gas heater according to claim 1 it is characterised in that：Described upper and lower connecting plate（3）、（4）Also have Have upper and lower insertion into and out of pore.

5. efficient gas heater according to claim 1 it is characterised in that：Described shell body（1）, inner housing（2）Upper, Lower two ends have sealing cover（11）、（12）.

6. efficient gas heater according to claim 5 it is characterised in that：Described gas outlet（8）, upper sealing cover（11）Material Expect for 304 stainless steels, lower cover（12）Material is Q235 steel.