CN219607369U - Air duct type electric heater with good heating effect - Google Patents

Abstract

The utility model relates to the technical field of electric heaters, in particular to an air duct type electric heater with good heating effect, which comprises an air duct box body, wherein the air duct box body is of a regular hexagon structure, a first junction box and a second junction box are respectively arranged on two sides of the top of the air duct box body, a plurality of first electric heating pipe groups and second electric heating pipe groups which are distributed at equal intervals are respectively arranged at the bottoms of the first junction box and the second junction box, the first electric heating pipe groups and the second electric heating pipe groups penetrate through a heat insulation frame and extend to the inner cavity of the air duct box body, the first electric heating pipe groups and the second electric heating pipe groups are arranged in a staggered mode, an air inlet pipe and an air outlet pipe which are communicated with the inner cavity of the air duct box body are respectively arranged at two ends of the air duct box body, and an air baffle is arranged between the air outlet pipe and the air duct box body.

Description

Air duct type electric heater with good heating effect

Technical Field

The utility model relates to the technical field of electric heaters, in particular to an air duct type electric heater with a good heating effect.

Background

An electric heater is a device capable of converting electric energy into heat energy and is used for heating, preserving heat and heating flowing liquid and gaseous media. When the heating medium is under the pressure, the heating cavity of the sleeve electric heater takes away the heat generated by the electric heating element by adopting the fluid thermodynamic principle, so that the temperature of the heated medium reaches the technological requirements of users, wherein the air duct type electric heater is mainly used for heating air, drying powder, heat treatment, heating sulfur dioxide and the like, and is widely applied to various fields of chemical industry, grain drying, aerospace and the like according to the working temperature of an air duct.

The air and the air generated by the fan are conveyed into the air duct box and are heated by the electric heating pipe and then output, but the air has a certain flow speed, so that the residence time of the air in the area where the electric heating pipe is arranged is too short, and the air are not heated to a higher temperature.

Disclosure of Invention

The utility model aims at overcoming the defects of the prior art, and provides an air duct type electric heater with good heating effect, so as to solve the problems that air generated by a fan and air are conveyed into an air duct box and are output after being heated by an electric heating pipe, but the air has a certain flow speed, so that the residence time of the air in an area where the electric heating pipe is arranged is too short, and the air generate higher temperature.

The utility model is realized by the following technical scheme:

the utility model provides an air duct type electric heater that heating effect is good, includes the air duct case body, the air duct case body is regular hexagon structure, and air duct case body top both sides are equipped with first terminal box and second terminal box respectively, be connected with the insulating frame that is cavity rectangle structure between first terminal box or second terminal box and the air duct case body, first terminal box and second terminal box bottom are equipped with a plurality of equidistance respectively and distribute first electric heating nest of tubes and second electric heating nest of tubes, first electric heating nest of tubes and second electric heating nest of tubes all pass insulating frame and extend to air duct case body inner chamber, and the mutual crisscross setting between first electric heating nest of tubes and the second electric heating nest of tubes, air duct case body both ends are equipped with intake pipe and outlet duct that are linked together with air duct case body inner chamber respectively, install the air barrier between outlet duct and the air duct case body.

As the preferable technical scheme of the utility model, a plurality of support columns which are uniformly distributed are arranged at the bottom of the air duct box body.

In order to increase the residence time of the air in the area where the electric heating tube is arranged, the size of the air inlet tube is larger than the size of the air outlet tube.

As a preferable technical scheme of the utility model, the first electric heating tube group and the second electric heating tube group are composed of a plurality of electric heating tubes which are transversely arranged.

In order to increase the residence time of air in the area where the electric heating pipe is arranged, a plurality of uniformly distributed air-blocking holes are formed in the air-blocking plate in a penetrating mode.

Compared with the prior art, the utility model has the beneficial effects that:

through the setting of two electric heating tube sets to be convenient for the staff to adjust electric heating tube set as required and open quantity, through mutual crisscross setting between first electric heating tube set and the second electric heating tube set, thereby can be high-efficient quick carry out abundant heating to the air in the wind channel case body inner chamber, can reduce the heat transfer dead angle in the wind channel case inner chamber simultaneously, through the setting of the air barrier of the installation between the size of the size larger than outlet duct of intake pipe and the wind channel case body, thereby make the air inlet rate be greater than the air-out speed, improved the detention time of air in the wind channel case inner chamber greatly, make the heating temperature of air higher, improve heat exchange efficiency greatly.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is a schematic view of the structure of the air baffle of the present utility model;

in the figure: 1. an air duct box body; 2. a second junction box; 3. a heat insulating frame; 4. a first junction box; 5. an air inlet pipe; 6. a support column; 7. an air outlet pipe; 8. an electric heating tube; 9. a wind shielding plate; 10. and a wind isolating hole.

Detailed Description

The preferred embodiments of the present utility model will be described in detail below with reference to the attached drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.

In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Examples

The air duct type electric heater with good heating effect comprises an air duct box body 1, wherein the air duct box body 1 is of a regular hexagon structure, a plurality of uniformly distributed supporting columns 6 of a rectangular structure are arranged at the bottom of the air duct box body 1, a first junction box 4 and a second junction box 2 are respectively arranged at two sides of the top of the air duct box body 1, a heat insulation frame 3 of a hollow rectangular structure is connected between the first junction box 4 or the second junction box 2 and the air duct box body 1, heat of an electric heating pipe 8 can be isolated from being emitted to the outside air through the arrangement of the heat insulation frame 3, workers can be prevented from being scalded due to contact with the electric heating pipe 8 in work, the safety performance is greatly improved, a plurality of first electric heating pipe groups and second electric heating pipe groups which are distributed at equal intervals are respectively arranged at the bottoms of the first junction box 4 and the second junction box 2, the first electric heating tube groups and the second electric heating tube groups are arranged in a staggered manner, the air in the inner cavity of the air channel box body 1 can be efficiently and quickly fully heated, meanwhile, the heat transfer dead angle in the inner cavity of the air channel box body 1 can be reduced, meanwhile, the arrangement of the two electric heating tube groups is convenient for workers to adjust the opening quantity of the electric heating tube groups as required, the first electric heating tube groups and the second electric heating tube groups are composed of a plurality of electric heating tubes 8 which are transversely arranged, the first electric heating tube groups and the second electric heating tube groups all penetrate through the heat insulation frame 3 and extend to the inner cavity of the air channel box body 1, the two ends of the air channel box body 1 are respectively provided with an air inlet pipe 5 and an air outlet pipe 7 which are communicated with the inner cavity of the air channel box body 1, an air isolation plate 9 is arranged between the air outlet pipe 7 and the air duct box body 1, and a plurality of air isolation holes 10 which are uniformly distributed are formed in the air isolation plate 8 in a penetrating manner in order to increase the residence time of air in the area where the electric heating pipes 8 are arranged.

Wherein, the size of intake pipe 5 is greater than the size of outlet duct 7, through the size of intake pipe 5 size of outlet duct 7 size cooperation outlet duct 7 and the setting of wind barrier 9 of installing between the wind channel case body 1 to make the air inlet rate be greater than the air-out rate, improved the residence time of air in wind channel case body 1 inner chamber greatly, make the heating temperature of air higher, improve heat exchange efficiency greatly.

The implementation principle of the air duct type electric heater with good heating effect provided by the embodiment of the utility model is as follows: in the using process, firstly, air generated by an external fan is conveyed into the air duct box body 1 through the air inlet pipe 5, and the first electric heating pipe groups and the second electric heating pipe groups are arranged in a staggered mode, so that the air in the inner cavity of the air duct box body 1 can be efficiently and quickly heated, meanwhile, the heat transfer dead angle in the inner cavity of the air duct box body 1 can be reduced, the air inlet rate is higher than the air outlet rate through the arrangement that the size is smaller than that of a plurality of air isolation holes 10 formed in an air isolation plate 9 by the air outlet pipe 7 of the air inlet pipe 5, the residence time of the air in the inner cavity of the air duct box body 1 is greatly improved, the heating temperature of the air is higher, the heat exchange efficiency is greatly improved, and meanwhile, the heat of the electric heating pipe 8 can be isolated from being emitted to the outside air through the arrangement of the heat insulation frame 3, and workers can be prevented from being scalded due to contact with the electric heating pipe 8 in work.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model.

Claims (5)

1. The utility model provides an effectual air duct formula electric heater of heating, includes air duct case body (1), its characterized in that: the utility model discloses a wind channel case body (1), including wind channel case body (1), air duct case body (1) top both sides are equipped with first terminal box (4) and second terminal box (2) respectively, be connected with between first terminal box (4) or second terminal box (2) and wind channel case body (1) and be cavity rectangular structure's thermal-insulated frame (3), first terminal box (4) and second terminal box (2) bottom are equipped with a plurality of equidistance distributed's first electric heating nest of tubes and second electric heating nest of tubes respectively, first electric heating nest of tubes and second electric heating nest of tubes all pass thermal-insulated frame (3) and extend to wind channel case body (1) inner chamber, and the mutual crisscross setting between first electric heating nest of tubes and the second electric heating nest of tubes, wind channel case body (1) both ends are equipped with intake pipe (5) and outlet duct (7) that are linked together with wind channel case body (1) inner chamber respectively, install wind barrier (9) between outlet duct (7) and wind channel case body (1).

2. The electric air duct heater with good heating effect according to claim 1, wherein: the bottom of the air duct box body (1) is provided with a plurality of support columns (6) which are uniformly distributed.

3. The electric air duct heater with good heating effect according to claim 1, wherein: the size of the air inlet pipe (5) is larger than that of the air outlet pipe (7).

4. The electric air duct heater with good heating effect according to claim 1, wherein: the first electric heating tube group and the second electric heating tube group are composed of a plurality of electric heating tubes (8) which are transversely arranged.

5. The electric air duct heater with good heating effect according to claim 1, wherein: a plurality of uniformly distributed wind isolating holes (10) are formed in the wind isolating plate (9) in a penetrating mode.