CN215992529U

CN215992529U - Tunnel furnace with preheating air combustion supporting function

Info

Publication number: CN215992529U
Application number: CN202122686187.3U
Authority: CN
Inventors: 孙伟强
Original assignee: Puning Zhenwei Machinery Co ltd
Current assignee: Puning Zhenwei Machinery Co ltd
Priority date: 2021-11-04
Filing date: 2021-11-04
Publication date: 2022-03-11
Anticipated expiration: 2031-11-04

Abstract

The utility model discloses a tunnel furnace with combustion-supporting function of preheated air, which relates to the technical field of tunnel furnaces and comprises a furnace body and an air blower arranged at the upper end of the furnace body, wherein an air heat exchanger comprises an induced draft fan arranged at the upper end of the furnace body and an inlet pipe arranged at one end of the induced draft fan for connection, one side of the air heat exchanger, which is far away from the induced draft fan, is provided with a hot air recovery pipe, the induced draft fan is opened for working, tail gas in the furnace body can enter the air heat exchanger, air enters the air heat exchanger from the opening of an air filter for heat exchange with the tail gas, the air after heat exchange continuously flows into the hot air recovery pipe, the air blower is opened, the air after heat exchange can continuously flow through a hot air pipeline, the hot air pipeline and a gas pipeline are connected with an air-fuel mixer through a guide pipe, and the air-fuel mixer can be used for mixing the air after heat exchange with the gas, through the air heat exchanger who sets up, can make the air preheat to mix with the gas, reduce heat emission.

Description

Tunnel furnace with preheating air combustion supporting function

Technical Field

The utility model relates to a tunnel furnace technical field specifically is a tunnel furnace that has preheated air combustion-supporting.

Background

Tunnel ovens (food processing) are mechanical tunnel-type devices that accomplish the baking of food products by conduction, convection, and radiation of heat, with the baking chamber being a long and narrow tunnel, typically 80cm to 140cm wide. A continuously operating conveyor system is located within the tunnel. When the food is baked, the food is moved relatively to the electric heating element or the direct-fired burning rod by the conveying chain plate, the steel belt or the net belt. Thereby completing the work of uniform baking and conveying. The oven can be continuously produced, has high production efficiency, saves manpower and has stable baking quality. The tunnel furnace is mainly used for food enterprises in industrial production and is characterized by continuous or intermittent baking in large batches.

Current tunnel oven is in the use, and tail gas generally directly discharges to the external environment in, and contains more heat in tail gas, extravagant energy easily, and some tunnel ovens when using, can not preheat the air, need consume more fuel, and the result of use is unsatisfactory.

In view of the above problem, the utility model provides a have combustion-supporting tunnel furnace of preheated air.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a tunnel furnace with combustion-supporting preheated air, the work of an induced draft fan is started, tail gas in a furnace body can enter an air heat exchanger, air can enter from an opening of an air filter and enters the air heat exchanger through an air inlet, the tail gas is filtered through a honeycomb tube core and is subjected to heat exchange with the tail gas, then, the air after the heat exchange continuously flows into a hot air recycling pipe, an air blower is simultaneously started, the air after the heat exchange can continuously flow through a hot air pipeline, an air valve is arranged on the surface of the hot air pipeline, a gas electromagnetic valve is arranged on the outer side of the gas pipeline, the hot air pipeline and the gas pipeline are connected with an air-fuel mixer through a conduit, the air-fuel mixer can be used for mixing the air after the heat exchange with the gas, and then the air-fuel mixer continuously flows into a combustion pipe for use, through the air heat exchanger who sets up, can make the air preheat to mix with the gas, improve the combustion heat degree, increase heat recovery, reduce heat emission, fuel saving, excellent in use effect has thereby solved the problem among the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a tunnel furnace with preheating air for combustion supporting comprises a furnace body and an air blower arranged at the upper end of the furnace body, wherein an air heat exchanger is arranged at one side of the air blower, an air filter is arranged at one side of the air heat exchanger, and a conveying assembly is arranged at one side of the furnace body;

the air heat exchanger comprises a draught fan arranged at the upper end of the furnace body and an inlet pipe arranged at one end of the draught fan and connected, an air outlet and an air inlet are formed in the upper end of the air heat exchanger, the air inlet is located above the air outlet, a honeycomb pipe core is arranged inside the air heat exchanger, a hot air recovery pipe is arranged on one side, away from the draught fan, of the air heat exchanger, the hot air outlet is formed in one side, away from the air heat exchanger, of the hot air recovery pipe, and the hot air outlet is connected with an air blower.

Preferably, the furnace body comprises a furnace cover and a gas inlet pipe orifice arranged at the upper end of the furnace body, and one end of the gas inlet pipe orifice is connected with a gas pipeline.

Preferably, a gas electromagnetic valve is arranged on the outer side of the gas pipeline, an air-fuel mixer is arranged below the gas electromagnetic valve, and a fixing plate is arranged on the outer wall of the furnace body.

Preferably, a combustion tube is arranged on one side of the fixing plate and is positioned in the furnace body, and a high-voltage electrode is arranged on the surface of the fixing plate.

Preferably, the surface of the gas inlet pipe orifice is provided with a gas filter, a pressure regulating valve and an air-fuel proportional valve.

Preferably, one end of the blower is connected with a hot air pipeline, and an air valve is arranged on the surface of the hot air pipeline.

Preferably, the conveying assembly comprises an installation frame arranged on one side of the furnace body and a traction wheel arranged on one side of the installation frame, and a steel belt is sleeved on the outer side of the traction wheel.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model provides a have combustion-supporting tunnel furnace of preheated air, the staff lets in the gas from the gas inlet pipe mouth opening part, utilizes the gas filter to filter, and the gas is led to the furnace body through gas pipeline and combustion tube, opens high-tension electrode this moment and switches on to the use of cooperation gas utilizes the flame vent to make the gas heat, so that use.

2. The utility model provides a tunnel furnace with combustion-supporting of preheated air, the draught fan is installed at the tail end of furnace body, at this moment, the draught fan is opened to work, tail gas in the furnace body can enter into the air heat exchanger, air can enter from the opening part of air cleaner, enter into the air heat exchanger through the air inlet, and filter the tail gas through the honeycomb tube core that is arranged, and exchange heat with the tail gas, afterwards, the air after heat exchange continues to flow to the hot air recycling pipe, simultaneously, the air blower is opened, the air after heat exchange can continue to flow through the hot air pipeline, and the surface of the hot air pipeline is provided with an air valve, the outer side of the gas pipeline is provided with a gas solenoid valve, the hot air pipeline and the gas pipeline are connected with an air-fuel mixer through a conduit, the air-fuel mixer can be used for mixing the air after heat exchange and the gas, then continue to flow and use in the combustion tube, through the air heat exchanger who sets up, can make the air preheat to mix with the gas, improve the burning heat degree, increase heat recovery, reduce heat emission, fuel saving, excellent in use effect.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a side view of the overall structure of the present invention;

fig. 3 is a structural side view of the air heat exchanger of the present invention;

FIG. 4 is a schematic view of a portion of the air heat exchanger according to the present invention;

FIG. 5 is a schematic view of the structure of the gas pipeline of the present invention;

fig. 6 is a schematic structural diagram of a part of the gas pipeline of the present invention.

In the figure: 1. a furnace body; 11. a furnace mantle; 12. a gas inlet pipe orifice; 121. a gas filter; 122. a pressure regulating valve; 123. an air-fuel ratio valve; 13. a gas pipeline; 131. a gas solenoid valve; 132. an air-fuel mixer; 133. a fixing plate; 134. a combustion tube; 135. a high voltage electrode; 136. a flame vent; 2. a blower; 21. a hot air duct; 22. an air valve; 3. an air heat exchanger; 31. an induced draft fan; 32. an inlet; 33. an exhaust port; 34. an air outlet; 35. an air inlet; 36. a honeycomb tube core; 37. a hot air recovery pipe; 38. a hot air outlet; 4. an air filter; 5. a delivery assembly; 51. a mounting frame; 52. a traction wheel; 53. a steel strip.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to solve the technical problems that the tail gas is generally directly discharged to the external environment, the tail gas contains more heat, energy is easily wasted, and when a tunnel furnace is used, the air cannot be preheated, more fuel is consumed, and the using effect is not ideal, as shown in fig. 1-6, the following preferable technical scheme is provided:

a tunnel furnace with preheating air combustion supporting comprises a furnace body 1 and an air blower 2 arranged at the upper end of the furnace body 1, wherein an air heat exchanger 3 is arranged on one side of the air blower 2, an air filter 4 is arranged on one side of the air heat exchanger 3, and a conveying assembly 5 is arranged on one side of the furnace body 1.

The air heat exchanger 3 comprises an induced draft fan 31 arranged at the upper end of the furnace body 1 and an inlet pipe 32 arranged at one end of the induced draft fan 31 and connected, an exhaust port 33 is arranged at the upper end of the air heat exchanger 3, an air outlet 34 and an air inlet 35 are formed in the surface of the air heat exchanger 3, the air inlet 35 is positioned above the air outlet 34, a honeycomb tube core 36 is arranged inside the air heat exchanger 3, a hot air recovery pipe 37 is arranged on one side, away from the induced draft fan 31, of the air heat exchanger 3, a hot air outlet 38 is formed on one side, away from the air heat exchanger 3, of the hot air recovery pipe 37, and the hot air outlet 38 is connected with the air blower 2.

The furnace body 1 comprises a furnace cover 11 and a gas inlet pipe orifice 12 arranged at the upper end of the furnace body 1, and one end of the gas inlet pipe orifice 12 is connected with a gas pipeline 13.

A gas electromagnetic valve 131 is arranged outside the gas pipeline 13, an air-fuel mixer 132 is arranged below the gas electromagnetic valve 131, and a fixing plate 133 is arranged on the outer wall of the furnace body 1.

The combustion pipe 134 is disposed on one side of the fixing plate 133, the combustion pipe 134 is disposed inside the furnace body 1, and the high voltage electrode 135 is disposed on the surface of the fixing plate 133.

The surface of the gas inlet pipe orifice 12 is provided with a gas filter 121, a pressure regulating valve 122 and an air-fuel ratio valve 123.

One end of the blower 2 is connected to a hot air duct 21, and an air valve 22 is provided on a surface of the hot air duct 21.

The conveying assembly 5 comprises a mounting frame 51 arranged on one side of the furnace body 1 and a traction wheel 52 arranged on one side of the mounting frame 51, and a steel belt 53 is sleeved on the outer side of the traction wheel 52.

Specifically, when in use, a worker introduces gas from the opening of the gas inlet pipe orifice 12, the gas is filtered by the gas filter 121, the gas is introduced into the furnace body 1 through the gas pipeline 13 and the combustion pipe 134, at this time, the high voltage electrode 135 is turned on to be electrified and matched with the use of the gas, the gas can be heated by the flame port 136 so as to be used, the induced draft fan 31 is installed at the tail end of the furnace body 1, the induced draft fan 31 is turned on to work at this time, the tail gas in the furnace body 1 can enter the air heat exchanger 3, the tail gas is filtered through the arranged honeycomb pipe core 36, air can enter from the opening of the air filter 4, enters the air heat exchanger 3 through the air inlet 35 and exchanges heat with the tail gas, and then the air after heat exchange continuously flows into the hot air recovery pipe 37, and simultaneously the blower 2 is turned on, so that the air after heat exchange can continuously flows through the hot air pipeline 21, and the surface of the hot air pipeline 21 is provided with an air valve 22, the outer side of the gas pipeline 13 is provided with a gas electromagnetic valve 131, the hot air pipeline 21 and the gas pipeline 13 are connected with an air-fuel mixer 132 through a guide pipe, the air-fuel mixer 132 can be used for mixing the air and the gas after heat exchange, and then the air and the gas continuously flow into a combustion pipe 134 for use, the air can be preheated through the arranged air heat exchanger 3 and are mixed with the gas, the combustion heat is improved, the heat recovery is increased, the heat emission is reduced, the fuel is saved, and the use effect is good.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a tunnel furnace that has combustion-supporting of preheated air, includes furnace body (1) and air-blower (2) of setting in furnace body (1) upper end, its characterized in that: an air heat exchanger (3) is arranged on one side of the air blower (2), an air filter (4) is arranged on one side of the air heat exchanger (3), and a conveying assembly (5) is arranged on one side of the furnace body (1);

air heat exchanger (3) are including setting up draught fan (31) in furnace body (1) upper end and setting up inlet tube (32) of connecting in draught fan (31) one end, the upper end of air heat exchanger (3) is provided with gas vent (33), air outlet (34) and air intlet (35) have been seted up on the surface of air heat exchanger (3), and air intlet (35) are in the top of air outlet (34), the inside of air heat exchanger (3) is provided with honeycomb tube core (36), one side that draught fan (31) were kept away from in air heat exchanger (3) is provided with hot-blast recovery tube (37), hot-blast outlet (38) have been seted up to one side that air heat exchanger (3) were kept away from in hot-blast recovery tube (37), and hot-blast outlet (38) are connected with air-blower (2).

2. The tunnel furnace with the combustion supporting function of the preheated air as claimed in claim 1, wherein: the furnace body (1) comprises a furnace cover (11) and a gas inlet pipe orifice (12) arranged at the upper end of the furnace body (1), and one end of the gas inlet pipe orifice (12) is connected with a gas pipeline (13).

3. The tunnel furnace with the combustion supporting function of the preheated air as claimed in claim 2, wherein: the outer side of the gas pipeline (13) is provided with a gas electromagnetic valve (131), an air-fuel mixer (132) is arranged below the gas electromagnetic valve (131), and the outer wall of the furnace body (1) is provided with a fixing plate (133).

4. The tunnel furnace with the combustion supporting function of the preheated air as claimed in claim 3, wherein: and a combustion pipe (134) is arranged on one side of the fixed plate (133), the combustion pipe (134) is positioned in the furnace body (1), and a high-voltage electrode (135) is arranged on the surface of the fixed plate (133).

5. The tunnel furnace with the combustion supporting function of the preheated air as claimed in claim 2, wherein: and a gas filter (121), a pressure regulating valve (122) and an air-fuel ratio valve (123) are arranged on the surface of the gas inlet pipe orifice (12).

6. The tunnel furnace with the combustion supporting function of the preheated air as claimed in claim 1, wherein: one end of the air blower (2) is connected with a hot air pipeline (21), and an air valve (22) is arranged on the surface of the hot air pipeline (21).

7. The tunnel furnace with the combustion supporting function of the preheated air as claimed in claim 4, wherein: the conveying assembly (5) comprises a mounting frame (51) arranged on one side of the furnace body (1) and a traction wheel (52) arranged on one side of the mounting frame (51), and a steel belt (53) is sleeved on the outer side of the traction wheel (52).