CN110731355A - tunnel type food oven with hot air circulation - Google Patents
tunnel type food oven with hot air circulation Download PDFInfo
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- CN110731355A CN110731355A CN201910969284.8A CN201910969284A CN110731355A CN 110731355 A CN110731355 A CN 110731355A CN 201910969284 A CN201910969284 A CN 201910969284A CN 110731355 A CN110731355 A CN 110731355A
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- A—HUMAN NECESSITIES
- A21—BAKING; EDIBLE DOUGHS
- A21B—BAKERS' OVENS; MACHINES OR EQUIPMENT FOR BAKING
- A21B1/00—Bakers' ovens
- A21B1/02—Bakers' ovens characterised by the heating arrangements
- A21B1/24—Ovens heated by media flowing therethrough
- A21B1/26—Ovens heated by media flowing therethrough by hot air
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- A—HUMAN NECESSITIES
- A21—BAKING; EDIBLE DOUGHS
- A21B—BAKERS' OVENS; MACHINES OR EQUIPMENT FOR BAKING
- A21B1/00—Bakers' ovens
- A21B1/02—Bakers' ovens characterised by the heating arrangements
- A21B1/24—Ovens heated by media flowing therethrough
- A21B1/28—Ovens heated by media flowing therethrough by gaseous combustion products
-
- A—HUMAN NECESSITIES
- A21—BAKING; EDIBLE DOUGHS
- A21B—BAKERS' OVENS; MACHINES OR EQUIPMENT FOR BAKING
- A21B1/00—Bakers' ovens
- A21B1/40—Bakers' ovens characterised by the means for regulating the temperature
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- A—HUMAN NECESSITIES
- A21—BAKING; EDIBLE DOUGHS
- A21B—BAKERS' OVENS; MACHINES OR EQUIPMENT FOR BAKING
- A21B3/00—Parts or accessories of ovens
Abstract
The invention relates to an hot air circulation tunnel type food oven, which comprises a low-nitrogen burner, a hearth inner grate, an air return pipeline, a high-temperature fan, a heat energy converter, a hot air distributor, a control box and an oven box body, wherein the heat energy converter comprises an inner cavity and an outer cavity, the air return pipeline is positioned above the hearth inner grate, the front end and the rear end of the air return pipeline are respectively connected with the front end and the rear end of the hearth inner grate, the middle rear part of the air return pipeline is connected with the outer cavity through the high-temperature fan, the low-nitrogen burner is connected with the inner cavity, the air outlets of the inner cavity and the outer cavity are connected with the rear end of the hot air distributor, the hot air distributor is connected with an air inlet of the hearth inner grate, a temperature controller is arranged in the control box, a temperature sensing probe in the hot air distributor feeds back signals to a control system, the temperature sensing probe is accurately connected with and controls the size of a proportional combustion engine, so that the temperature requirement of baked.
Description
Technical Field
The invention relates to the field of food equipment, in particular to an hot air circulation tunnel type food oven.
Background
At present, with the gradual improvement of living standard of people and the increasing demand of baked food, people have more and more strong awareness of environmental protection and food safety, and there is a need for tunnel type food baking ovens heated by environment-friendly, energy-saving, safe and efficient air hot air circulation systems.
At present, most of tunnel type food ovens of 1000 types, 600 types and the like in food factories use heat conduction systems for heating heat conduction oil circulation of gas boilers to bake food, and the operating principle is that the heat conduction oil heated by the gas boilers circulates in pipelines by driving the heat conduction oil through oil pumps, and the heat conduction oil releases heat when passing through a heating furnace exhaust pipeline in the oven cavity of the food oven to bake various foods.
Disclosure of Invention
The present invention aims to solve the above-mentioned disadvantages of the prior art.
In order to achieve the purpose, the embodiment of the invention provides hot air circulation tunnel type food oven which comprises a low-nitrogen combustion machine, a hearth inner grate, an air return pipeline, a high-temperature fan, a heat energy converter, a hot air distributor, a control box and an oven box body, wherein the inside of the hot air distributor is provided with a temperature sensing probe, the heat energy converter comprises a cylindrical outer wall and an inner wall, a space enclosed by the inner wall is an inner cavity, a space between the outer wall and the inner wall is an outer cavity, the air return pipeline is positioned above the hearth inner grate, the front end and the rear end of the air return pipeline are respectively connected with the front end and the rear end of the hearth inner grate, the middle rear part of the air return pipeline is connected with the outer cavity through the high-temperature fan, the low-nitrogen combustion machine is connected with the inner cavity, an air outlet of the inner cavity and an air outlet of the outer cavity are connected with the rear end of the hot air distributor, the side wall of the hot air distributor is connected with an air inlet of the hearth inner grate through a pipeline, the temperature controller is arranged in the control box and is connected with the temperature sensing probe and the proportional control probe and the temperature sensing probe in the oven box body, and the.
In possible embodiments, the front end of the outer wall of the heat energy converter is provided with a circular truncated cone type connecting cavity, and the outer wall is connected with the hot air distributor through the circular truncated cone type connecting cavity.
In possible embodiments, the thermal energy converter is made of a 310S high temperature stainless steel material.
In possible embodiments, a chimney is also provided above the hot air distributor.
In possible further embodiments, the height of the chimney is 15 meters.
In a possible further embodiment of , a pressure valve is further arranged above the thermal energy converter, and the pressure valve is connected with a chimney through a pipeline.
In possible embodiments, the high temperature fan, the heat energy converter, the main hot air supply pipes, the return air pipes and the oven box are all insulated by a cotton silicate insulation material, and the thickness of the cotton silicate insulation material is 40-60 mm.
The invention has the beneficial effects that:
(1) the system has the advantages of high temperature rising speed, short temperature reduction time, high temperature and high yield in the production process, time is saved, and work efficiency is improved.
(2) The system is environment-friendly, safe and reliable, and has no hazardous wastes.
(3) The system has the advantages of remarkable energy saving, reduced baking cost of products, high production efficiency and greatly improved economic benefit.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of circulating tunnel type food oven according to an embodiment of the present invention;
FIG. 2 is a schematic view of an alternative view of the configuration of the circulating tunnel food oven according to an embodiment of the present invention;
FIG. 3 is an cross-sectional view of the thermal energy converter illustrating the positional relationship of the inner and outer walls;
description of reference numerals:
1-furnace inner grate, 2-air return pipeline, 3-high temperature fan, 4-low nitrogen burner, 5-heat energy converter, 6-hot air distributor, 7-chimney, 51-inner wall, 52-outer wall, 53-outer cavity and 54-inner cavity.
Detailed Description
Furthermore, the terms "including" and "having" and any variations thereof, are intended to cover a non-exclusive inclusion, such as the inclusion of the series of steps or elements, the method, system, article, or apparatus not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The technical solution of the present invention is further described in step in detail with reference to the accompanying drawings and embodiments.
Referring to fig. 1-3, the present embodiment provides hot air circulation tunnel type food oven, which includes a low nitrogen burner 4, a grate 1 in a hearth, a return air duct 2, a high temperature fan 3, a heat energy converter 5, a hot air distributor 6, a control box and an oven housing, wherein the control box and the oven housing are not illustrated in the drawings.
A temperature sensing probe is arranged inside the hot air distributor 6.
The thermal energy converter 5 comprises a cylindrical outer wall 52 and an inner wall 51, wherein a space enclosed by the inner wall 51 is an inner cavity 54, and a space between the outer wall 52 and the inner wall 51 is an outer cavity 53.
The air return pipeline 2 is positioned above the fire grate 1 in the hearth, the front end and the rear end of the air return pipeline 2 are respectively connected with the front end and the rear end of the fire grate 1 in the hearth, the middle rear part of the air return pipeline 2 is connected with the outer cavity 53 through the high-temperature fan 3, the low-nitrogen combustion engine 4 is connected with the inner cavity 54, the air outlets of the inner cavity 54 and the outer cavity 53 are connected with the rear end of the hot air distributor 6, and the side wall of the hot air distributor 6 is connected with the air inlet of the fire grate 1 in the hearth through a pipeline.
And a temperature controller is arranged in the control box and is connected with the temperature sensing probe, and the temperature controller is also connected with the proportional control probe and the proportional burner in the low-nitrogen burner 4.
The temperature sensing probe feeds back signals to the control system, and the temperature sensing probe is accurately connected with and controls the size of the flame burned by the proportional gas turbine, so that the requirement of the baked food on the temperature is met.
The fire grate 1 in the hearth is positioned in the oven box body.
In examples, the front end of the outer wall 52 of the thermal energy converter 5 is provided with a circular truncated cone type connecting cavity, and is connected with the hot air distributor 6 through the circular truncated cone type connecting cavity.
In examples, the thermal energy converter 5 was made using a 310S high temperature stainless steel material.
In the examples, a chimney 7 is also provided above the hot air distributor 6.
In examples, the chimney 7 is 15 meters high.
For convenience of comparison and description, the hot air circulation tunnel type food oven provided by the invention is referred to as a hot air circulation system for short, and the heat conduction circulation system for heating heat conduction oil by using the existing natural gas boiler is referred to as a heat conduction oil circulation system for short, and groups or a plurality of groups of hot air circulation systems can be installed according to the food baking process and the length of the oven.
The working principle is that high-temperature gas generated by combustion of the low-nitrogen combustor 4 enters an inner cavity 54 of the low-nitrogen combustor, is discharged from a gas outlet at the front end after being uniformly mixed, and is sent to a hot air distributor 6 together with circulating hot air in an outer cavity 53 outside the inner cavity 54, a high-temperature fan 3 continuously conveys hot air in a return air pipeline 2 into the outer cavity 53, the whole heat utilization system reaches flat-bed stone operating points due to changes in gas temperature, flow speed, pressure and volume, a small part of low-temperature circulating gas is discharged from a chimney 7, a temperature sensing probe in the hot air distributor feeds back signals to a control box, and the control box accurately and continuously controls the flame size of the proportional combustor, so that the requirement of the heat utilization system on temperature is met.
After the low-nitrogen combustor 4 is adopted for combustion, the generated high-temperature gas is sent into an inner cavity 54 of a heat energy converter by a high-temperature fan 3, then enters a hot air distributor and then enters a grate pipeline in a hearth to be forced to circulate, the temperature, the pressure and the volume of the high-temperature gas change during the conversion from high to low, when the high-temperature gas passes through a grate 1 in the hearth in a hearth of a food oven, heat is released and is conducted and radiated into the hearth, so that the temperature in the hearth meets the temperature requirement of baked food, moreover, in the circulating process of the high-temperature gas, the insufficiently combusted smoke is sent into the heat energy converter by the high-temperature fan 3 to be mixed and combusted with the high-temperature gas in an outlet of the inner cavity until part of the smoke is exhausted from a pressure relief port above an outer cavity of the heat energy converter, and is connected with the bottom of a chimney 7 through a pipeline and then.
It should be noted that the high temperature gas ejected from the low nitrogen combustion engine 4 is with flame, extends to the outlet of the inner cavity, so the outlet of the inner cavity can mechanically burn the above mentioned flue gas which is not fully burned, a pressure valve is also arranged above the heat energy converter 5, the pressure valve is connected with a chimney 7 through a pipeline, after the flue gas returns to the heat energy converter through the return air pipeline 2 and the high temperature fan 3, if the flue gas is too much, the pressure valve will automatically open, and the flue gas is discharged through the chimney 7.
In the whole hot air circulating system, the high temperature fan 3, the heat energy converter, each hot air supply main pipeline, the return air main pipeline, the air box and the oven box body are all insulated by using a silicate cotton insulating material, the insulation thickness is 40-60 mm, and the surface temperature is about 30 ℃. When high-temperature gas circulates through the grate 1 in the hearth, heat is released and conducted and radiated into the furnace chamber.
Compared with the existing heat conducting oil circulating system, the hot air circulating system has different combustion modes and different heat transfer media, and mainly has the following differences:
the combustion mode of the hot air circulating system of the invention is as follows: high-temperature gas generated by the combustion of the low-nitrogen combustor 4 is sent into the heat energy converter by using the high-temperature fan 3, then enters a fire grate pipeline in the furnace cavity for circulation, and then releases heat, and air is used as a heat transfer medium; the existing heat conduction oil circulation system has the following combustion mode: after the natural gas boiler heats the heat conduction oil, the heat conduction oil is sent into a fire grate pipeline in the furnace chamber by an oil pump to circulate, and then the heat is released, and the heat conduction oil is used as a heat transfer medium.
Compared with a tunnel type food oven with 4 groups of 20 ten thousand cards burners and a 1000 type 54-meter hot air circulating system, the tunnel type food oven with the 1000 type 54-meter heat conduction oil circulating system has the following characteristics:
1. the system has the advantages of high temperature rising speed, short temperature reduction time, high temperature and high yield in the production process, time saving and work efficiency improvement.
In the temperature rising stage: the temperature rise speed is high, the temperature rise time of a hot air circulating system is 45 minutes and the temperature rise time of a heat conduction oil circulating system is 95 minutes according to the temperature of 270 ℃ from the beginning of heating to the temperature required for baking the food, and heat conduction oil in the pipeline reaches six tons to seven tons and needs to absorb heat. Compared with a heat conduction oil system, the hot air circulation system of the invention is shortened by 50 minutes.
In the cooling stage, the cooling time is short, the hot air circulating system stops running without cooling time when the temperature is reduced to 100 ℃ from the temperature when production is stopped, the cooling time of the heat conduction oil circulating system is 90 minutes, the heat conduction oil in the pipeline needs to be slowly cooled, and motors with 30 kilowatts are in continuous operation in the cooling process.
In the production stage, the temperature in the furnace chamber is high and is higher than the temperature of the heat conducting oil when being heated by more than 20 ℃, so that the heat efficiency is high, the yield is large, the baking effect is good, and the use temperature of the -like heat conducting oil is preferably less than or equal to 300 ℃.
2. The system is environment-friendly, safe and reliable, and has no hazardous wastes. The hot air circulating system is burnt by the low-nitrogen burner 4, the adopted air is used as a heat transfer medium, compared with a heat transfer oil circulating system which uses a boiler to heat the heat transfer oil, the heat transfer oil is safer and more reliable as the heat transfer medium, and the phenomena of heat transfer oil leakage and even fire catching do not exist. The production safety coefficient is increased, and the good effects of energy conservation, environmental protection and safe production are achieved.
3. The system has the advantages of remarkable energy saving, reduced baking cost of products, high production efficiency and greatly improved economic benefit. And the electricity consumption test comparison table of the natural gas consumption of the hot air circulation food oven and the heat conduction oil circulation food oven. Specific natural gas usage and electricity usage pairs are shown in Table 1
TABLE 1 comparison table of natural gas consumption and electricity consumption
A temperature rising stage: the temperature of the hot air circulating system is 45 minutes from the temperature rise to the temperature capable of baking the food, and the natural gas is 77m322.5 degrees (7.5 × 4 × 45 ÷ 60 ═ 22.5); the temperature rise time of the heat conduction oil circulation system is 95 minutes, and 150m of natural gas is used3And the power consumption is 47.5 degrees. Less natural gas is used at 73.5m in the temperature rising stage3And the power consumption is reduced by 25 degrees.
The production stage comprises: the hot air circulating system uses 35.3m of natural gas per hour347.5 kilowatt high-temperature resistant motors are matched; the heat transfer oil circulating system uses 52m of natural gas per hour3The power is prepared by motors of 30 kilowatts, the production of each shift is calculated according to ten hours every day, the less natural gas (52-35.3) multiplied by 10-167 m3。
And in the cooling stage, the hot air circulating system stops running only when the temperature is reduced to 100 ℃ from the production stop time, the cooling time is not required, motors with 30 kilowatts are required for the cooling time of the heat conduction oil circulating system, the cooling time is 90 minutes, and the power consumption is 30 multiplied by 90 divided by 60 to 45 degrees.
Through the test: the hot air circulating system uses natural gas of 430m in total in three stages of temperature rise, production and temperature reduction3Power consumption is 322.5 degrees; and the heat conduction oil circulation system uses 670m of natural gas in total3. Compared with a heat conduction oil circulation system, the hot air circulation system uses less natural gas 670-3The natural gas is saved 792 yuan (calculated by 3.3 yuan per cubic meter, 3.3 × 240 ═ 792), the electricity consumption is reduced by 70 yuan (70 × 0.8 yuan/degree ═ 56), the natural gas and electricity costs are saved by 848 yuan (792+56 ═ 848) per working day, and the natural gas and electricity costs are saved by 254400 yuan (848 × 300 ═ 254400) per year according to 300 working hours. Produced every working dayThe baking cost of the biscuit walnut cake is averagely reduced by 106 yuan (848 ÷ 8 ═ 106) by 8 tons per ton of the product.
4. The system has less fixed asset investment, 13.5 ten thousand yuan for 60 ten thousand calorie boilers and 6 tons of less heat transfer oil compared with a heat transfer oil circulating system, wherein ten thousand yuan per ton is sixty thousand yuan, and the total investment is less than 19.5 ten thousand yuan.
5. The system has low maintenance cost and long service life, the hot air circulating system uses air as a heat transfer medium and does not use heat transfer oil, the heat transfer oil circulating system uses a boiler, a main motor and high maintenance cost, the heat transfer oil is replaced times every three years, 6 tons of heat transfer oil are replaced every time, the cost of replacing the heat transfer oil is 2 ten thousand yuan per year on average, the heat transfer oil is replaced, time and labor are wasted, the heat transfer oil is dangerous and needs to be entrusted with a qualification unit for treatment, the service life of the hot air circulating system is 15 to 20 years, and the service life of the heat transfer oil circulating system is , which is 8 to 12 years.
, remote network PLC control, putting the high temperature Pt100 platinum temperature sensing metal probe on the hot air distributor, connecting with the temperature measuring terminal of the burner through the electric box temperature control module, realizing remote control and on-site manual touch adjustment function, secondly, manually controlling the switch according to the button, connecting the temperature sensing probe with the proportional control gauge head and the proportional burner, completing temperature adjustment through the contactor, the change-over switch, etc. the temperature sensing probe in the system feeds back signals to the control system to accurately and continuously control the flame size when the proportional burner burns, thereby meeting the requirement of the baked food on temperature.
6 according to the temperature requirement of baked food, the -class temperature is controlled within the range of 260-320 ℃, the temperature difference is about +/-2 ℃, the operation of a heat conduction oil system is relatively troublesome, full-time boiler operators are provided, and the labor cost is saved by 3.6 ten thousand yuan each year (each operator is calculated according to 3000 yuan each month).
7. The hot air circulation food oven can save more than 31 ten thousand yuan per year (see attached table 2: economic benefit analysis comparison table).
TABLE 2 economic benefits analysis and comparison table
The method comprises the following operation steps:
1. temperature setting: according to the requirement of baking food, the temperature of a temperature controller arranged in the control box is controlled at a specified temperature.
2. And starting the high-temperature fan, operating the high-temperature fan, then starting the low-nitrogen combustor, and starting the combustor to burn.
3. And starting the machine to produce after the temperature of the hearth reaches the specified temperature.
4. After the operation is finished, the stop button of the combustor is pressed, and then the stop button of the fan is pressed, so that the combustor and the fan are in a stop operation state.
While the above embodiments have been described in detail with reference to illustrating the objects, features and advantages of the invention, it should be understood that the above embodiments are illustrative only and are not to be construed as limiting the scope of the invention, and that various modifications, equivalents, improvements and the like within the spirit and scope of the invention are intended to be included therein.
Claims (7)
1, hot air circulation tunnel type food baking ovens, which are characterized by comprising a low-nitrogen burner (4), a fire grate (1) in a hearth, an air return pipeline (2), a high-temperature fan (3), a heat energy converter (5), a hot air distributor (6), a control box and an oven box body;
a temperature sensing probe is arranged inside the hot air distributor (6);
the heat energy converter (5) comprises a cylindrical outer wall (52) and an inner wall (51), the space enclosed by the inner wall (51) is an inner cavity (54), and the space between the outer wall (52) and the inner wall (51) is an outer cavity (53);
the air return pipeline (2) is positioned above the hearth inner grate (1), the front end and the rear end of the air return pipeline (2) are respectively connected with the front end and the rear end of the hearth inner grate (1), the middle rear part of the air return pipeline (2) is connected with the outer cavity (53) through the high-temperature fan (3), the low-nitrogen burner (4) is connected with the inner cavity (54), the air outlets of the inner cavity (54) and the outer cavity (53) are connected with the rear end of the hot air distributor (6), and the side wall of the hot air distributor (6) is connected with the air inlet of the hearth inner grate (1) through a pipeline;
a temperature controller is arranged in the control box, the temperature controller is connected with the temperature sensing probe, and the temperature controller is also connected with a proportional control probe and a proportional burner in the low-nitrogen burner (4);
the temperature sensing probe feeds back signals to the temperature controller, and the temperature sensor is accurately connected with and controls the size of the flame burned by the proportional gas turbine, so that the requirement of the baked food on the temperature is met;
the fire grate (1) in the hearth is positioned in the oven box body.
2. The heated air circulation tunnel food oven according to claim 1, characterized in that the front end of the outer wall (52) of the thermal energy converter (5) is provided with a truncated cone type connection cavity, through which the outer wall (52) is connected to the hot air distributor (6).
3. The hot air circulation tunnel food oven according to claim 1, characterized in that the thermal energy converter (5) is made of a 310S high temperature stainless steel material.
4. The hot air circulation tunnel food oven according to claim 1, characterized in that above the hot air distributor (6) there is also provided a chimney (7).
5. The hot air circulation tunnel food oven according to claim 4, characterized in that the height of the chimney (7) is 15 meters.
6. The hot air circulation tunnel food oven according to claim 4, characterized in that a pressure valve is also arranged above the thermal energy converter (5), which is connected to the chimney (7) by means of a pipe.
7. The heated air circulation tunnel type food oven according to claim 1, characterized in that the high temperature fan (3), the hot air distributor (6), the heat energy converter (5), the main hot air supply pipes, the return air pipe (2) and the oven body are all insulated by a heat insulating material of cotton silicate, and the thickness of the heat insulating material of cotton silicate is 40-60 mm.
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| CN201910969284.8A CN110731355A (en) | 2019-10-12 | 2019-10-12 | tunnel type food oven with hot air circulation |
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| CN201910969284.8A CN110731355A (en) | 2019-10-12 | 2019-10-12 | tunnel type food oven with hot air circulation |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08103202A (en) * | 1994-10-04 | 1996-04-23 | Yamada Seisakusho:Kk | Food baking machine |
| CN201011834Y (en) * | 2007-02-02 | 2008-01-30 | 刘锐华 | Heated air circulation roasting system |
| CN101795571A (en) * | 2007-05-25 | 2010-08-04 | 瑞典烘焙股份公司 | Gas-fired tunnel oven |
| CN103875746A (en) * | 2014-03-27 | 2014-06-25 | 广州浩雅机械设备有限公司 | Tunnel type hot air circulation tunnel furnace |
| CN105258500A (en) * | 2015-11-03 | 2016-01-20 | 佛山市顺德区奥利焙食品机械有限公司 | Hot-air circulating systems for fully-automatic fuel gas tunnel furnace and proportional controlling method of hot-air circulating systems |
| CN105570925A (en) * | 2016-02-20 | 2016-05-11 | 程义浩 | Combustion-supporting device of combustion chamber of egg tray machine drying box |
| CN106472617A (en) * | 2015-09-01 | 2017-03-08 | 上海勤辉食品机械股份有限公司 | A kind of circulating air oven |
| CN208671350U (en) * | 2018-07-11 | 2019-03-29 | 浙江有品生物科技有限公司 | A kind of Split type combustion furnace |
| CN110024817A (en) * | 2019-04-04 | 2019-07-19 | 阳江市荣华远东实业有限公司 | A kind of Novel heated air circulation direct combustion fuel gas oven |
| CN110024818A (en) * | 2018-06-27 | 2019-07-19 | 广州焙欧机械设备有限公司 | A kind of continuous tunnel furnace |
-
2019
- 2019-10-12 CN CN201910969284.8A patent/CN110731355A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08103202A (en) * | 1994-10-04 | 1996-04-23 | Yamada Seisakusho:Kk | Food baking machine |
| CN201011834Y (en) * | 2007-02-02 | 2008-01-30 | 刘锐华 | Heated air circulation roasting system |
| CN101795571A (en) * | 2007-05-25 | 2010-08-04 | 瑞典烘焙股份公司 | Gas-fired tunnel oven |
| CN103875746A (en) * | 2014-03-27 | 2014-06-25 | 广州浩雅机械设备有限公司 | Tunnel type hot air circulation tunnel furnace |
| CN106472617A (en) * | 2015-09-01 | 2017-03-08 | 上海勤辉食品机械股份有限公司 | A kind of circulating air oven |
| CN105258500A (en) * | 2015-11-03 | 2016-01-20 | 佛山市顺德区奥利焙食品机械有限公司 | Hot-air circulating systems for fully-automatic fuel gas tunnel furnace and proportional controlling method of hot-air circulating systems |
| CN105570925A (en) * | 2016-02-20 | 2016-05-11 | 程义浩 | Combustion-supporting device of combustion chamber of egg tray machine drying box |
| CN110024818A (en) * | 2018-06-27 | 2019-07-19 | 广州焙欧机械设备有限公司 | A kind of continuous tunnel furnace |
| CN208671350U (en) * | 2018-07-11 | 2019-03-29 | 浙江有品生物科技有限公司 | A kind of Split type combustion furnace |
| CN110024817A (en) * | 2019-04-04 | 2019-07-19 | 阳江市荣华远东实业有限公司 | A kind of Novel heated air circulation direct combustion fuel gas oven |
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