CN213334935U - Air duct type electric heater, concentration and adsorption device and waste gas treatment device - Google Patents

Abstract

The utility model belongs to the firing equipment field discloses a wind channel formula electric heater, concentrated adsorption equipment and exhaust treatment device, and wind channel formula electric heater includes the casing, be equipped with the air inlet wind channel and the air-out wind channel that are linked together in the casing, the air intake in air inlet wind channel with the air outlet in air-out wind channel set up in the same lateral wall of casing. The utility model discloses a wind channel formula electric heater sets up the air intake in air inlet duct and the air outlet in air outlet duct in the same lateral wall of casing, and air intake and air outlet are located the structure at both ends among the non-prior art, and it can make whole wind channel formula electric heater's volume diminish, and then can not occupy too big space, is applicable to in the limited use place in space or the equipment.

Description

Air duct type electric heater, concentration and adsorption device and waste gas treatment device

Technical Field

The utility model relates to a firing equipment field especially relates to a wind channel formula electric heater, concentrated adsorption equipment and exhaust treatment device.

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 passes through the heating cavity of the electric heater under the action of pressure, the heat generated by the electric heating assembly is taken away by adopting the fluid thermodynamic principle, so that the temperature of the heated medium meets the process requirement required by a user. The air duct type electric heater is mainly used for heating air, drying powder, performing heat treatment, heating sulfur dioxide and the like, and is widely applied to various fields of waste gas treatment, chemical industry, grain drying, aerospace and the like.

The existing air duct type electric heaters are various in types, and the inlets and outlets of most of the existing air duct type electric heaters are arranged at two ends of the electric heaters, so that the electric heaters are large in size and large in occupied space, and the existing air duct type electric heaters cannot be applied to some use places or equipment with limited space.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wind channel formula electric heater can be applicable to in the limited use place in space or the equipment.

Another object of the utility model is to provide a concentrated adsorption equipment and exhaust treatment device can install above-mentioned wind channel formula electric heater in little space, has improved space utilization.

To achieve the purpose, the utility model adopts the following technical proposal:

the air duct type electric heater comprises a shell, wherein an air inlet air duct and an air outlet air duct which are communicated with each other are arranged in the shell, and an air inlet of the air inlet air duct and an air outlet of the air outlet air duct are arranged on the same side wall of the shell.

The air inlet of the air inlet duct and the air outlet of the air outlet duct are arranged on the same side wall of the shell, so that the size of the whole air duct type electric heater can be reduced, an overlarge space can not be occupied, and the air duct type electric heater can be suitable for use places or equipment with limited space.

Preferably, a partition board is arranged in the shell and divides the inner part of the shell into the air inlet duct and the air outlet duct.

The partition board divides the interior of the shell into an air inlet duct and an air outlet duct, the volume for flowing of fluid media in the shell is the largest, the space utilization rate in the shell is the largest, and meanwhile, the volume of the shell is the smallest on the premise that air inlet and air outlet requirements are met, and the installation space of the air duct type electric heater is reduced.

Preferably, both ends of an electric heating assembly of the air duct type electric heater are connected with the side wall of the shell, the electric heating assembly penetrates through the air inlet duct and the air outlet duct, a part of heating section of the electric heating assembly is arranged in the air inlet duct, and the other part of heating section is arranged in the air outlet duct.

The two ends of the electric heating assembly are connected with the side wall of the shell, so that the electric heating assembly is high in stability and cannot vibrate in the operation process. And through running through air inlet duct and air outlet duct with electric heating element, can reduce electric heating element's installation quantity, the cost is lower.

Preferably, two groups of electric heating assemblies of the air duct type electric heater are arranged, wherein the heating section of one group of electric heating assembly is arranged in the air inlet duct, and the heating section of the other group of electric heating assembly is arranged in the air outlet duct;

or the electric heating assembly of the air duct type electric heater is provided with a group, and the heating section of the electric heating assembly is arranged in the air inlet duct or the air outlet duct.

A set of electric heating components are arranged in the air inlet duct and/or the air outlet duct, holes can be prevented from being formed in the partition plate, manufacturing is easy, installation is easy, the two sets of electric heating components can control the temperature respectively, and fine control of the electric heating components on heating of fluid media is achieved.

Preferably, a wiring cavity is formed in the outer side of the shell, and wiring ends at two ends of the electric heating assembly are placed in the wiring cavity.

Through this wiring chamber, can protect electric heating element's wiring end, avoid electric heating element's wiring end to receive external environment's interference or damage.

Preferably, a cooling cavity is arranged between at least one wiring cavity and the outer side wall of the shell.

The cooling chamber is arranged between the wiring chamber and the outer side wall of the shell, and can isolate a cable connected with the electric heating assembly from the air inlet duct or the air outlet duct, so that the insulating skin of the cable is prevented from being burnt and damaged.

Preferably, an isolation heat preservation cavity is further arranged between the cooling cavity and the outer side wall of the shell.

Through keeping apart the heat preservation chamber, can keep warm to the hookup location department of electrical heating component and casing, avoid the heat to run off through this hookup location department.

Preferably, a first electric heating assembly or a guide plate is arranged at the communication position of the air inlet duct and the air outlet duct.

Through setting up first electric heating assembly for the fluid medium that flows through air inlet duct and air outlet duct intercommunication position department is heated, has improved heating efficiency.

The setting of guide plate can shunt the fluid medium to make fluid medium evenly distributed in the air outlet duct, and then make fluid medium by the even heating.

The utility model also provides a concentrated adsorption equipment, including foretell wind channel formula electric heater. Through this wind channel formula electric heater, can improve space utilization.

The utility model also provides a waste gas treatment device, including foretell concentrated adsorption equipment, can improve space utilization.

The utility model discloses a wind channel formula electric heater sets up the air intake in air inlet duct and the air outlet in air outlet duct in the same lateral wall of casing, and air intake and air outlet are located the structure at both ends among the non-prior art, and it can make whole wind channel formula electric heater's volume diminish, and then can not occupy too big space, is applicable to in the limited use place in space or the equipment.

Drawings

Fig. 1 is a schematic structural diagram of an air duct type electric heater according to an embodiment of the present invention;

fig. 2 is a schematic distribution diagram of a fin-type electric heating tube according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an air duct type electric heater according to a second embodiment of the present invention.

In the figure:

1. a housing; 2. an air inlet duct; 21. an air inlet; 3. an air outlet duct; 31. an air outlet; 4. an electrical heating assembly; 5. a wiring cavity; 6. a cooling chamber; 7. isolating the heat preservation cavity; 8. a partition plate; 9. a baffle.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Example one

The present embodiment provides an air duct type electric heater, which can be applied to a use place or equipment with limited space, for example, the air duct type electric heater of the present embodiment can be applied to a concentration adsorption device, which can heat gas flowing into a desorption region of the concentration adsorption device, and then the heated gas can desorb an adsorbent having volatile organic compounds adsorbed in the desorption region, so that the volatile organic compounds are desorbed from the adsorbent.

As shown in fig. 1, the air duct type electric heater of this embodiment includes a housing 1, an air inlet duct 2 and an air outlet duct 3 that are communicated with each other are disposed in the housing 1, and a fluid medium (such as air) can enter the air inlet duct 2 and flow out through the air outlet duct 3. Install electric heating element 4 on casing 1, electric heating element 4 can heat the fluid medium in air inlet duct 2 and the air outlet duct 3.

The air inlet 21 of the air inlet duct 2 and the air outlet 31 of the air outlet duct 3 are arranged on the same side wall of the shell 1, and compared with the structure that the air inlets and the air outlets are arranged at the two ends of the air duct type electric heater in the prior art, the air inlet 21 of the air inlet duct 2 and the air outlet 31 of the air outlet duct 3 are arranged on the same side wall of the shell 1, so that the size of the whole air duct type electric heater can be reduced, and further, the air duct type electric heater does not occupy too large space.

The air inlet duct 2 and the air outlet duct 3 jointly form a main duct, the main duct can be U-shaped, V-shaped or W-shaped, and meanwhile, the structure arranged on the same side of the air inlet 21 and the air outlet 31 is matched, so that the volume of the whole air duct type electric heater is smaller, the heating stroke length of the main duct is guaranteed, and the heating uniformity and the heating efficiency are facilitated. The overall duct shown in fig. 1 of this embodiment is U-shaped.

Preferably, a partition plate 8 is disposed in the casing 1, and the partition plate 8 divides the inside of the casing 1 into the air inlet duct 2 and the air outlet duct 3. As shown in fig. 1, one end of the partition board 8 of this embodiment is fixedly connected to the inner wall of the casing 1 at one side where the air inlet 21 and the air outlet 31 are provided, and the other end of the partition board has a certain distance from the opposite side wall of the casing 1 away from the air inlet 21 and the air outlet 31, so that the air inlet duct 2 and the air outlet duct 3 which are communicated with each other can be formed inside the casing 1. Form above-mentioned air inlet duct 2 and air-out duct 3 through baffle 8, can make air inlet duct 2 and 3 adjacent settings in air-out duct, air inlet duct 2 and 3 sharing baffles 8 in air-out duct are as the lateral wall promptly, so that the interval between air inlet duct 2 and the air-out duct 3 is zero, and then make the wind channel formula electric heater's of this embodiment volume littleer, and also make the volume that supplies the circulation of fluid medium in the casing 1 the biggest, casing 1 inner space utilization is the biggest. In addition, baffle 8 only forms air inlet duct 2 and air outlet duct 3 with the inside back of separating of casing 1, can make casing 1 satisfy under the prerequisite of air inlet and air-out requirement, the volume is minimum.

It can be understood that the partition plate 8 of the present embodiment can be made of a metal material, and has a high temperature resistance, so that when the electric heating assembly 4 heats the fluid medium, the partition plate 8 is not damaged by the high temperature.

The two ends of the electric heating assembly 4 are connected to the side walls of the housing 1 to realize the positioning of the electric heating assembly 4 on the housing 1. And the both ends of electric heating element 4 are connected in casing 1, can make electric heating element 4's stability strong, can not vibrate in the operation process. This electric heating element 4 runs through air inlet duct 2 and 3 settings in air outlet duct, can reduce electric heating element 4's installation quantity, and the cost is lower. In this embodiment, a part of the heating sections of the electric heating assembly 4 is disposed in the air inlet duct 2, and the other part of the heating sections is disposed in the air outlet duct 3, so as to heat the fluid medium in the air inlet duct 2 and the air outlet duct 3. Preferably, both ends of the electric heating assembly 4 may be integrally formed with the housing 1, or may be fixed to the housing 1 by a connector such as a bolt, or may be detachably connected to the housing 1 by directly clamping or the like.

In this embodiment, it should be noted that, a hole through which the power supply heating assembly 4 passes is formed in the partition plate 8, and the partition plate 8 can support the power supply heating assembly 4, so that the power supply heating assembly 4 is more stably installed.

The electric heating component 4 may include an electric heating tube, or may include an electric heating sheet or an electric heating wire, as shown in fig. 1, the electric heating component 4 of this embodiment includes an electric heating tube, and preferably, as shown in fig. 1, the electric heating tube may be a finned electric heating tube, two ends of the finned electric heating tube are connected to the side wall of the casing 1 and penetrate through the air inlet duct 2 and the air outlet duct 3, and the finned electric heating tube can heat the fluid medium in the air inlet duct 2 and the air outlet duct 3 at the same time. The finned electric heating pipe penetrates through the air inlet duct 2 and the air outlet duct 3, on one hand, a fluid medium can be heated more sufficiently, on the other hand, the fin structure of the finned electric heating pipe can improve the heating efficiency, and compared with the electric heating pipe without fins, the mounting number of the finned electric heating pipe can be reduced, the number of holes formed in the shell 1 and the partition plate 8 is reduced, and the risk of air leakage at the connecting position of the finned electric heating pipe and the shell 1 can be further reduced; and the both ends of fin formula electric heating pipe are all fixed connection on casing 1, and the installation is more stable. In this embodiment, the number of the finned electric heating tubes may be one, or two or more.

Further, the fin of the finned electric heating tube of the embodiment is arranged facing the fluid medium, so that the fluid medium can be fully contacted with the fin of the finned electric heating tube, the heat exchange area is increased, and the heating efficiency is also increased. Preferably, the finned electric heating tube of the present embodiment is disposed perpendicular to the flow direction of the fluid medium, so as to ensure the contact between the fins and the fluid medium.

In consideration of the fact that all the finned electric heating tubes can achieve a high heating effect, as shown in fig. 2, a plurality of finned electric heating tubes can be arranged in multiple rows, and the multiple rows of finned electric heating tubes are arranged in a staggered manner, so that the fluid medium can be in contact with the fins of each finned electric heating tube.

As an optimal technical solution, since one end of the air inlet duct 2 and one end of the air outlet duct 3 of the present embodiment are communicated with each other, in consideration of the flow characteristics of the fluid medium, the guide plate 9 is arranged at the communication position of the air inlet duct 2 and the air outlet duct 3, and the fluid medium flowing to the communication position can be uniformly distributed by the guide plate 9, so that the fluid medium flowing into the air outlet duct 3 can be heated more uniformly, the energy consumption can be effectively reduced, and the heating efficiency can be improved. As shown in fig. 1, the number of the guide plates 9 in this embodiment may be one, or two or more, and when two or more guide plates 9 are provided, the two or more guide plates 9 may be disposed at the communication positions of the air inlet duct 2 and the air outlet duct 3 at equal intervals to uniformly divide the fluid medium into multiple channels, so that the fluid medium is uniformly distributed in the air outlet duct 3, and the fluid medium is uniformly heated. And the shape of the guide plate 9 is also U-shaped according to the shape of the U-shaped total air duct.

In this embodiment, the wiring ends at the two ends of the electric heating assembly 4 are connected through the wiring row, and the wiring ends of the electric heating assembly 4 are fixedly installed outside the shell 1, so that the structure of the electric heating assembly 4 is more stable, and the distribution is more compact and uniform. In order to better protect the wiring end of the electric heating component 4, the wiring cavity 5 is arranged on the outer side of the shell 1, the wiring end of the electric heating component 4 is arranged in the wiring cavity 5, and the wiring end is protected through the wiring cavity 5 so as to prevent the wiring end from being interfered or damaged by external environment (such as rainwater, sand wind and the like). In this embodiment, the wiring chamber 5 may be integrally formed with the housing 1.

Further, be equipped with cooling chamber 6 between the lateral wall of above-mentioned wiring chamber 5 and casing 1, specifically, this cooling chamber 6 sets up in the one end that electric heating element 4 is connected with the cable, through this cooling chamber 6, can keep apart the wiring chamber 5 of this side with the air inlet duct 2 or the air-out wind channel 3 in the casing 1, also make the cable that electric heating element 4 is connected keep apart with the air inlet duct 2 or the air-out wind channel 3 of casing 1 promptly, and then avoid the insulating skin of cable to be burnt and damaged because of the high temperature of the fluid medium in air inlet duct 2 or the air-out wind channel 3, the factor of safety and the life of the wind channel formula electric heater of this embodiment have been improved. In this embodiment, as shown in fig. 1, the cooling cavity 6 is disposed at one side of the air outlet duct 3.

Furthermore, in this embodiment, an isolation thermal insulation cavity 7 is further disposed between the cooling cavity 6 and the outer side wall of the casing 1, and the isolation thermal insulation cavity 7 is used for insulating the connection position between the electric heating assembly 4 and the casing 1, so as to prevent the heat in the air outlet duct 3 from running off through the connection position between the electric heating assembly 4 and the casing 1. It is understood that the insulating cavity 7 may be provided at one side of the air inlet duct 2.

More preferably, in this embodiment, a first electrical heating assembly (not shown in the figure) may be further disposed at a communication position between the air inlet duct 2 and the air outlet duct 3, and the first electrical heating assembly passes through the guide plate 9, so as to heat the fluid medium at the communication position between the air inlet duct 2 and the air outlet duct 3. This first electric heating element also can adopt finned electric heating pipe, when setting up this first electric heating element, also can set up above-mentioned wiring chamber and place this first electric heating element's wiring end, sets up the cooling chamber and avoids the insulating skin of cable to be burnt and damage, sets up to keep apart the heat preservation chamber and keeps warm to first electric heating element and 1 cable junction position of casing.

When the air duct type electric heater of the embodiment is used, a fluid medium enters the air inlet duct 2 through the air inlet 21, and at the moment, the fluid medium is heated by one part of the electric heating assembly 4, is divided into a plurality of channels by the guide plate 9, enters the air outlet duct 3, is uniformly heated by the other part of the electric heating assembly 4 again, and then flows out through the air outlet 31.

The embodiment also provides a concentrated adsorption equipment, and it includes foretell wind channel formula electric heater, and the concentrated adsorption equipment of this embodiment can install above-mentioned wind channel formula electric heater in little space, has improved space utilization.

The embodiment also provides a waste gas treatment device, including above-mentioned concentrated adsorption equipment, on the basis of the realization to waste gas treatment, space utilization has been improved.

Example two

The present embodiment provides an air duct type electric heater, which is different from the first embodiment in that: the electric heating elements 4 of this embodiment are provided with two sets, as shown in fig. 3, wherein the heating section of one set of electric heating elements 4 is disposed in the air inlet duct 2, and the heating section of the other set of electric heating elements 4 is disposed in the air outlet duct 3. That is to say, in this embodiment, the electric heating element 4 does not run through the air inlet duct 2 and the air outlet duct 3, but the heating sections of the electric heating element 4 are respectively disposed in the air inlet duct 2 and the air outlet duct 3. The two sets of electric heating elements 4 are arranged, so that the heating of the fluid medium in the air inlet duct 2 and the air outlet duct 3 can be realized, the two sets of electric heating elements 4 can control the temperature respectively, and the fine control of the electric heating elements 4 on the heating of the fluid medium is realized. In addition, the baffle 8 of this embodiment no longer sets up the hole, thereby can avoid the direct fluid medium that gets into air outlet duct 3 from 8 trompils of baffle in the air inlet duct 2 to appear heating insufficient risk, also makes wind channel formula electric heating component easily make moreover and easily install.

Because this embodiment electric heating element 4 is provided with two sets ofly, two sets of electric heating element 4 all can the connecting cable, consequently, all are equipped with cooling chamber 6 between the lateral wall of two wiring chambeies 5 and casing 1 to the realization is to the protection of cable.

The rest of the structure of this embodiment is the same as that of the first embodiment, and therefore, the description thereof is omitted.

The air duct type electric heater of the embodiment does not occupy too large space, and is suitable for use places or equipment with limited space.

It can be understood that, except that the two sets of electric heating elements 4 of this embodiment are respectively arranged inside and outside the air inlet duct 2 and the air outlet duct 3, only one set of electric heating element 4 may be arranged, and the heating section of the electric heating element 4 may be arranged in the air inlet duct 2 or the air outlet duct 3, that is, only the fluid medium of the air inlet duct 2 or the air outlet duct 3 is heated.

The present embodiment further provides a concentration and adsorption device, which includes the air duct type electric heater described in the present embodiment.

The embodiment also provides an exhaust gas treatment device, which comprises the concentration and adsorption device.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides an air duct type electric heater, its characterized in that includes casing (1), be equipped with air inlet duct (2) and air outlet duct (3) that are linked together in casing (1), air intake (21) in air inlet duct (2) with air outlet (31) in air outlet duct (3) set up in the same lateral wall of casing (1).

2. The air channel electric heater according to claim 1, characterized in that a partition plate (8) is arranged in the casing (1), and the partition plate (8) divides the inside of the casing (1) into the air inlet channel (2) and the air outlet channel (3).

3. The air duct type electric heater according to claim 1, wherein both ends of the electric heating assembly (4) of the air duct type electric heater are connected with the side wall of the casing (1), the electric heating assembly (4) penetrates through the air inlet duct (2) and the air outlet duct (3), a part of heating sections of the electric heating assembly (4) are arranged in the air inlet duct (2), and the other part of heating sections are arranged in the air outlet duct (3).

4. The air duct type electric heater according to claim 1, characterized in that the electric heating assemblies (4) of the air duct type electric heater are provided with two groups, wherein the heating section of one group of the electric heating assemblies (4) is arranged in the air inlet duct (2), and the heating section of the other group of the electric heating assemblies (4) is arranged in the air outlet duct (3);

or the electric heating component (4) of the air duct type electric heater is provided with a group, and the heating section of the electric heating component (4) is arranged in the air inlet duct (2) or the air outlet duct (3).

5. An air channel electric heater according to claim 3 or 4, characterized in that a wiring cavity (5) is arranged outside the casing (1), and the terminals at the two ends of the electric heating assembly (4) are arranged in the wiring cavity (5).

6. An air channel electric heater according to claim 5, characterized in that a cooling chamber (6) is provided between at least one of the wiring chambers (5) and the outer side wall of the housing (1).

7. The air channel electric heater according to claim 6, characterized in that a thermal insulating chamber (7) is further provided between the cooling chamber (6) and the outer side wall of the housing (1).

8. The air channel type electric heater according to any one of claims 1-4, characterized in that a first electric heating component or a deflector (9) is arranged at the communication position of the air inlet channel (2) and the air outlet channel (3).

9. A concentration adsorption device comprising the air channel electric heater according to any one of claims 1 to 8.

10. An exhaust gas treatment device comprising the concentrated adsorption device according to claim 9.

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