Steam tunnel furnace

Abstract

The utility model relates to the field of baking technologies, and provides a steam tunnel furnace which comprises an oven, a gas header pipe and a steam header pipe, and the gas header pipe and the steam header pipe are both arranged outside the oven; a plurality of gas pipes, a plurality of ignition rods and a plurality of steam pipes are arranged in an inner cavity of the oven, the gas pipes, the ignition rods and the steam pipes extend in the width direction of the oven, the gas pipes and the steam pipes are arranged at intervals in the length direction of the oven, and the ignition rods are arranged at intervals in the length direction of the oven; the gas pipe is provided with a plurality of gas ports, and the plurality of gas ports are arranged upwards; an ignition opening of the ignition rod faces upwards; the steam pipe is provided with a plurality of steam ports which are arranged downwards. The baking oven has the effect that the influence on gas combustion is reduced while the uniformity of temperature distribution and the uniformity of steam spraying in the baking oven during baking are ensured.

Description

Technical Field

[0001] This application relates to the field of baking technology, and particularly to a steam tunnel oven. Background Art

[0002] After baking, the bread often shows the phenomenon of damaged skin, which is caused by insufficient moisture after the skin is air-dried. In the baking industry, steam is often sprayed during baking in the oven to assist baking, so as to create a temperature and humidity environment in the oven, thereby improving the surface color of the bread and also assisting the dough to continue to ferment in the early stage of baking.

[0003] In the oven, there are usually a gas pipe, an ignition rod and a steam pipe. The gas is ejected from the gas pipe, and the ignition rod ignites the gas ejected from the gas pipe. The steam is ejected from the steam pipe. To ensure the uniformity of temperature distribution and the uniformity of steam spraying during baking, both the gas pipe and the steam pipe should be evenly distributed in the oven. In the case of even distribution, the steam may affect ignition and gas combustion. Therefore, a steam tunnel oven is needed to reduce the impact on gas combustion while ensuring the uniformity of temperature distribution and the uniformity of steam spraying in the oven during baking. Utility Model Content

[0004] In order to reduce the impact on gas combustion while ensuring the uniformity of temperature distribution and the uniformity of steam spraying in the oven during baking, this application provides a steam tunnel oven.

[0005] The steam tunnel oven provided by this application adopts the following technical solutions:

[0006] A steam tunnel oven includes an oven, a main gas pipe and a main steam pipe. Both the main gas pipe and the main steam pipe are arranged outside the oven. In the inner cavity of the oven, there are multiple gas pipes, multiple ignition rods and multiple steam pipes. The multiple gas pipes, the multiple ignition rods and the multiple steam pipes all extend along the width direction of the oven. The multiple gas pipes and the multiple steam pipes are arranged at intervals along the length direction of the oven. The multiple ignition rods are arranged at intervals along the length direction of the oven. The gas pipe is provided with multiple gas outlets, and all the multiple gas outlets are arranged upwards. The ignition port of the ignition rod is arranged upwards. The steam pipe is provided with multiple steam outlets, and all the multiple steam outlets are arranged downwards.

[0007] By adopting the above technical solution, when using a tunnel furnace, gas is introduced into each gas pipe from the gas main pipe, and the gas ejected from the gas outlet is ignited by an igniting rod; at the same time, steam is introduced into each steam pipe from the steam main pipe. Since both the gas outlet and the ignition port of the igniting rod are arranged upward, while the steam outlet of the steam pipe is arranged downward, the influence of the ejected steam on the igniting rod and gas combustion can be reduced. In addition, since multiple gas pipes and multiple steam pipes are arranged at intervals, the temperature distribution uniformity and steam spraying uniformity in the baking oven can be ensured.

[0008] Optionally, the baking oven is provided with a ventilation opening, and the baking oven is provided with a ventilation duct, and the ventilation duct is communicated with the inner cavity of the baking oven through the ventilation opening; an exhaust fan is arranged in the ventilation duct.

[0009] By adopting the above technical solution, when baking, the exhaust fan is used to extract the excess oil fume in the baking oven and conduct centralized treatment separately to prevent the natural overflow of the oil fume and pollute the environment and the production workshop.

[0010] Optionally, a plurality of ventilation openings are provided, and the plurality of ventilation openings are arranged at intervals along the length direction of the baking oven, and the plurality of ventilation openings are all communicated with the ventilation duct.

[0011] By adopting the above technical solution, the oil fume is extracted from a plurality of ventilation openings, ensuring the uniformity of gas flow in the baking oven.

[0012] Optionally, a valve is arranged at the position of the ventilation opening of the baking oven, and the valve is used to control the flow rate of gas in the ventilation duct.

[0013] By adopting the above technical solution, the opening and closing size of the ventilation opening is controlled by the valve, and further the amount of air extracted from the baking oven by the exhaust fan is controlled, improving the flexibility of use of the tunnel furnace.

[0014] Optionally, multiple igniting rods and multiple gas pipes are all at the same height; the steam pipe is located below the igniting rod, the number of the steam pipes is the same as the number of the igniting rods, and the multiple steam pipes correspond to the multiple igniting rods one by one.

[0015] By adopting the above technical solution, the risk of the steam ejected from the steam pipe affecting the ignition of the igniting rod is further reduced.

[0016] Optionally, a plurality of brackets are arranged in the inner cavity of the baking oven, the brackets extend along the length direction of the baking oven, and the plurality of brackets are arranged at intervals along the length direction of the baking oven; the upper surface of the bracket abuts against the lower surface of the gas pipe, and one bracket corresponds to multiple gas pipes.

[0017] By adopting the above technical solution, the bracket is used to support the gas pipe and the steam pipe, thereby improving the connection stability between the steam pipe and the gas pipe and the oven.

[0018] Optionally, multiple said steam pipes are all slidably connected to the oven along the height direction of the oven, and the oven is provided with a driving member for driving the steam pipe to move up and down along the height direction of the oven.

[0019] By adopting the above technical solution, on the one hand, it is convenient to adjust the height of the steam pipe according to the volume and type of the bread to adjust the spraying height of the steam; on the other hand, the height of the steam pipe can also be adjusted according to the influence of the steam on the igniter, thereby improving the use flexibility of the tunnel oven.

[0020] Optionally, there is a second connecting pipe between the steam pipe and the main steam pipe, and the inner cavity of the steam pipe is communicated with the inner cavity of the main steam pipe through the second connecting pipe; the second connecting pipe includes a fixed section and a movable section, the fixed section is fixedly connected to the top wall of the oven, the fixed section extends along the height direction of the oven, and the movable section is slidably connected to the fixed section along the length direction of the fixed section.

[0021] By adopting the above technical solution, the sliding connection between the steam pipe and the oven is realized through the sliding fit between the fixed section and the movable section, and a certain limitation is formed on the sliding path of the steam pipe relative to the oven.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. By arranging multiple gas pipes and multiple steam pipes, the multiple gas pipes and the multiple steam pipes are arranged at intervals along the length direction of the oven, and the gas ports and the ignition ports of the igniters face upward, and the steam ports face downward, so as to ensure the uniformity of the temperature distribution in the oven and the uniformity of the steam spraying during baking while reducing the influence on the gas combustion;

[0024] 2. By making the steam pipe slidably connected to the oven along the height direction of the oven, it is convenient to adjust the height of the steam pipe, and further adjust the spraying height of the steam, thereby improving the use flexibility of the tunnel oven. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the overall structural schematic diagram of Embodiment 1 of the present application.

[0026] Figure 2 is a schematic diagram showing the distribution of multiple brackets in the oven.

[0027] Figure 3 is Figure 2 the enlarged schematic diagram at Part A.

[0028] Figure 4 It is a schematic structural diagram of Embodiment 2 of the present application.

[0029] Explanation of reference numerals: 1, oven; 11, ignition rod; 12, ventilation opening; 13, sliding cavity; 2, main gas pipe; 21, gas pipe; 22, gas port; 3, main steam pipe; 31, steam pipe; 32, steam port; 33, sliding block; 34, second connecting pipe; 341, fixed section; 342, movable section; 4, bracket; 41, support rod; 42, connecting rod; 5, main air pipe; 6, conveyor belt; 7, ventilation duct; 72, valve; 73, first connecting pipe; 8, driving member. Detailed implementation manners

[0030] The following further elaborates on the present application in conjunction with the attached Figures 1-4 drawings.

[0031] Embodiment 1 of the present application discloses a steam tunnel oven.

[0032] Embodiment 1

[0033] Referring to Figure 1 , a steam tunnel oven includes an oven 1, a main gas pipe 2, and a main steam pipe 3. Both the main gas pipe 2 and the main steam pipe 3 are installed outside the oven 1.

[0034] Referring to Figure 2 and Figure 3 , a plurality of gas pipes 21, a plurality of ignition rods 11, a plurality of steam pipes 31, and a plurality of brackets 4 are installed in the inner cavity of the oven 1. The plurality of gas pipes 21 are all connected to the main gas pipe 2, and the plurality of steam pipes 31 are all connected to the main steam pipe 3. The plurality of gas pipes 21, the plurality of ignition rods 11, and the plurality of steam pipes 31 all extend along the width direction of the oven 1.

[0035] The plurality of gas pipes 21 and the plurality of steam pipes 31 are arranged at intervals along the length direction of the oven 1, and the plurality of ignition rods 11 are arranged at intervals along the length direction of the oven 1. The gas pipe 21 is provided with a plurality of gas ports 22, and all the plurality of gas ports 22 face upward. The ignition port of the ignition rod 11 faces upward. The steam pipe 31 is provided with a plurality of steam ports 32, and all the plurality of steam ports 32 face downward.

[0036] The bracket 4 includes a support rod 41 and two connecting rods 42. The two connecting rods 42 are respectively connected to both ends of the support rod 41. The central axis of the connecting rod 42 is perpendicular to the central axis of the support rod 41. The end of the connecting rod 42 far from the support rod 41 is fixedly connected to the top wall of the oven 1. Among them, the connection manner between the connecting rod 42 and the support rod 41 can be welding fixation, integral molding, or detachable connection by bolts. The connecting rod 42 and the oven 1 are detachably connected by bolts.

[0037] The support rod 41 is arranged to extend along the length direction of the oven 1, and multiple brackets 4 are arranged at intervals along the length direction of the oven 1. The upper surface of the support rod 41 abuts against the lower surfaces of the gas pipes 21 and the steam pipes 31, and multiple gas pipes 21 correspond to one support rod 41. Thus, the brackets 4 are used to support the gas pipes 21 and the steam pipes 31, improving the connection stability between the steam pipes 31 and the gas pipes 21 and the oven 1.

[0038] An air main pipe 5 is arranged outside the oven 1, and the air main pipe 5 is communicated with the inner cavity of the oven 1 for introducing air into the inner cavity of the oven 1.

[0039] A conveyor belt 6 is arranged at the bottom of the oven 1, and the conveyor belt 6 is arranged to extend along the length direction of the oven 1 for transporting the baking trays on which the bread is placed.

[0040] A plurality of ventilation openings 12 are formed through the top wall of the oven 1, and the plurality of ventilation openings 12 extend along the length direction of the oven 1. A ventilation duct 7 is installed at the top of the oven 1, and the ventilation duct 7 extends along the length direction of the oven 1. A plurality of first connecting pipes 73 are connected to the side wall of the ventilation duct 7. One end of each first connecting pipe 73 is communicated with the ventilation duct 7, and the other end is communicated with the inner cavity of the oven 1 through the ventilation opening 12.

[0041] An exhaust fan is arranged in the ventilation duct 7, so that during baking, the exhaust fan is used to extract the excess oil fume in the oven 1 for separate centralized treatment to prevent the oil fume from overflowing naturally and polluting the environment and the production workshop.

[0042] A plurality of valves 72 are arranged at the positions of the ventilation openings 12 at the top of the oven 1. The valves 72 are used to control the flow rate of the gas in the ventilation duct 7, and the plurality of valves 72 correspond to the plurality of ventilation openings 12 one by one. Thus, the opening and closing sizes of the ventilation openings 12 are controlled by the valves 72, and further the amount of air extracted from the oven 1 by the exhaust fan is controlled.

[0043] The implementation principle of Embodiment 1 is as follows: When using the tunnel oven, gas is introduced into each gas pipe 21 from the gas main pipe 2, and the igniter 11 is used to ignite the gas ejected from the gas nozzle 22; at the same time, steam is introduced into each steam pipe 31 from the steam main pipe 3. Since both the gas nozzle 22 and the ignition port of the igniter 11 are arranged upward, and the steam port 32 of the steam pipe 31 is arranged downward, the influence of the ejected steam on the igniter 11 and the gas combustion can be reduced. In addition, since multiple gas pipes 21 and multiple steam pipes 31 are arranged at intervals, the temperature distribution uniformity in the oven 1 and the spraying uniformity of the steam can also be ensured.

[0044] Embodiment 2

[0045] The difference between this embodiment and Embodiment 1 is that in this embodiment, no brackets as described in Embodiment 1 are provided in the oven 1.

[0046] Referring to Figure 4 , a plurality of steam pipes 31 are all slidably connected to the baking oven 1 along the height direction of the baking oven 1. The baking oven 1 is provided with a driving member 8, and the driving member 8 is used to drive the steam pipe 31 to move up and down along the height direction of the baking oven 1. With this design, on the one hand, it is convenient to adjust the height of the steam pipe 31 according to the volume and type of the bread to adjust the spraying height of the steam; on the other hand, the height of the steam pipe 31 can also be adjusted according to the influence of the steam on the ignition rod 11, thereby improving the use flexibility of the tunnel oven.

[0047] In this embodiment, the driving member 8 is a cylinder.

[0048] Specifically, a sliding cavity 13 is opened on the inner wall of the baking oven 1 of the steam pipe 31, and the sliding cavity 13 extends along the height direction of the baking oven 1. Both ends of the steam pipe 31 are fixedly connected with sliding blocks 33, and the sliding blocks 33 are slidably connected to the sliding cavity 13 to realize the sliding connection between the steam pipe 31 and the baking oven 1. The structure is simple and convenient to adjust.

[0049] There is a second connecting pipe 34 between the steam pipe 31 and the main steam pipe 3, and the inner cavity of the steam pipe 31 is communicated with the inner cavity of the main steam pipe 3 through the second connecting pipe 34. The second connecting pipe 34 includes a fixed section 341 and a movable section 342. The fixed section 341 is fixedly connected to the top wall of the baking oven 1, and the fixed section 341 extends along the height direction of the baking oven 1. One end of the movable section 342 passes through the fixed section 341, and the other end is connected to the steam pipe 31.

[0050] A plurality of ignition rods 11 and a plurality of gas pipes 21 are all at the same height, and the steam pipe 31 is located below the ignition rod 11. The number of the steam pipes 31 is the same as the number of the ignition rods 11, and the plurality of steam pipes 31 correspond to the plurality of ignition rods 11 one by one to reduce the risk of the steam ejected from the steam pipe 31 affecting the ignition of the ignition rod 11.

[0051] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A steam tunnel furnace, characterized in that: The invention comprises an oven (1), a gas main pipe (2) and a steam main pipe (3), wherein the gas main pipe (2) and the steam main pipe (3) are both arranged outside the oven (1); a plurality of gas pipes (21), a plurality of ignition rods (11) and a plurality of steam pipes (31) are arranged in the inner cavity of the oven (1), and the plurality of gas pipes (21), the plurality of ignition rods (11) and the plurality of steam pipes (31) are all extended in the width direction of the oven (1); 21) and the plurality of steam pipes (31) are arranged at intervals along the length direction of the oven (1), and the plurality of ignition rods (11) are arranged at intervals along the length direction of the oven (1); the gas pipe (21) is provided with a plurality of gas ports (22), and the plurality of gas ports (22) are all arranged upward; the ignition ports of the ignition rods (11) are arranged upward; the steam pipe (31) is provided with a plurality of steam ports (32), and the plurality of steam ports (32) are all arranged downward.

2. A steam tunnel furnace according to claim 1, characterized in that: The oven (1) is provided with a vent (12), the oven (1) is provided with a ventilation duct (7), the ventilation duct (7) is connected with the inner cavity of the oven (1) through the vent (12); an exhaust fan is provided in the ventilation duct (7).

3. A steam tunnel furnace according to claim 2, characterized in that: A plurality of the ventilation openings (12) are provided, and the plurality of the ventilation openings (12) are arranged at intervals along the length direction of the oven (1), and the plurality of the ventilation openings (12) are all connected to the ventilation duct (7).

4. A steam tunnel furnace according to claim 2 or 3, characterized in that: The oven (1) is provided with a valve (72) at the position of the ventilation opening (12), and the valve (72) is used to control the flow rate of gas in the ventilation duct (7).

5. The steam tunnel furnace according to claim 1, characterized in that: The plurality of ignition rods (11) and the plurality of gas pipes (21) are located at the same height; the steam pipes (31) are located below the ignition rods (11); the number of the steam pipes (31) is the same as the number of the ignition rods (11); and the plurality of steam pipes (31) correspond one to one to the plurality of ignition rods (11).

6. The steam tunnel furnace according to claim 1, characterized in that: A plurality of brackets (4) are arranged in the inner cavity of the oven (1); the brackets (4) are extended along the length direction of the oven (1); and the plurality of brackets (4) are arranged at intervals along the length direction of the oven (1); the upper surface of the bracket (4) abuts against the lower surface of the gas pipe (21); and one bracket (4) corresponds to a plurality of gas pipes (21).

7. The steam tunnel furnace according to claim 1, characterized in that: The plurality of steam pipes (31) are slidably connected to the oven (1) along the height direction of the oven (1), and the oven (1) is provided with a driving member (8) for driving the steam pipes to move up and down along the height direction of the oven (1).

8. The steam tunnel furnace according to claim 7, characterized in that: A second connecting pipe (34) is provided between the steam pipe (31) and the steam main pipe (3), and the inner cavity of the steam pipe (31) is connected to the inner cavity of the steam main pipe (3) via the second connecting pipe (34); the second connecting pipe (34) comprises a fixed section (341) and a movable section (342); the fixed section (341) is fixedly connected to the top wall of the oven (1); the fixed section (341) is extended along the height direction of the oven (1); and the movable section (342) is slidably connected to the fixed section (341) along the length direction of the fixed section (341).

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