A gas combustion tube direct-fired hot air circulation furnace

Abstract

The utility model discloses a gas combustion tube direct-fired hot air circulation furnace, comprising a furnace body, and also comprising an air duct plate, an inner chamber, a circulation fan, a motor, a combustion fire tube and a combustion chamber. An air inlet is opened at the bottom shell of the furnace body, and the structure of the entire hot air circulation furnace is redesigned at the furnace body of the hot air circulation furnace, and two groups of tube bodies of the combustion fire tubes are loaded into the combustion chamber for combustion. The combustion chamber directly brings the heat energy at the combustion fire tube into the front furnace cavity of the furnace body through a convex return air inlet and an air inlet in conjunction with the return air duct and the air inlet, and after the motor drives the circulation fan blades, the circulation fan blades can send heat into the front furnace cavity between the air duct plates. The hot air circulation furnace has a high thermal energy utilization rate and a fast heating time, which is about 1 times faster than the heating time of the furnace body of the existing hot air circulation furnace, and greatly meets the baking needs of various types of baked foods in the hot air circulation furnace.

Description

Technical Field

[0001] The utility model relates to the technical field of hot air circulation furnaces, in particular to a gas combustion tube direct-fired hot air circulation furnace. Background Art

[0002] Hot air circulation oven is a new product developed by integrating the advantages of advanced hot air ovens at home and abroad and combining many years of experience in commercial food baking ovens. Hot air circulation oven is widely used in food baking industry.

[0003] The existing gas hot air furnace uses a heat exchanger to heat indirectly through combustion tube combustion, which has low thermal energy utilization efficiency, long heating time, and the maximum temperature can only reach about 230°C, which cannot meet the increasingly diversified requirements of baked foods. Therefore, we propose a gas combustion tube direct-fired hot air circulation furnace. Utility Model Content

[0004] The main purpose of the utility model is to provide a gas combustion tube direct-fired hot air circulation furnace, in which the entire hot air circulation furnace structure is redesigned at the furnace body of the hot air circulation furnace, and two groups of tube bodies of the combustion fire tubes are installed in the combustion chamber for combustion. The combustion chamber directly brings the heat energy at the combustion fire tube into the front furnace cavity of the furnace body through a convex return air port and an air inlet in conjunction with the return air duct and the air inlet, and after the motor drives the circulation fan blades, the circulation fan blades can send heat into the front furnace cavity between the air duct plates. This hot air circulation furnace has a high thermal energy utilization rate and a fast heating time, which is about 1 times faster than the heating time of the furnace body of the existing hot air circulation furnace. In addition, due to the combustion heat supply of the double groups of combustion fire tubes and the corresponding air duct structure, the hot air circulation furnace can achieve a maximum furnace body temperature of about 300°C, which greatly meets the baking needs of various types of baked foods in the hot air circulation furnace and can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A gas combustion tube direct-fired hot air circulation furnace comprises a furnace body, and also includes an air duct plate, an inner chamber, a circulation fan blade, a motor, a combustion fire tube and a combustion chamber. An air inlet is provided at the bottom shell of the furnace body, and a combustion chamber is arranged in the furnace body above the air inlet. An inner chamber and a front furnace cavity are arranged in the furnace body above the combustion chamber. A combustion fire tube is installed between the return air duct of the combustion chamber and the rear furnace cavity of the furnace body. A motor is installed at the rear cavity wall of the furnace body above the combustion fire tube, and the output shaft of the motor extends into the inner chamber and is installed with the circulation fan blade. Air duct plates are symmetrically installed in the front cavity wall of the furnace body, and air holes for ventilation are arranged on the front cavity wall of the furnace body between the air duct plates. A convex return air port communicating with the inner chamber is arranged upward at the return air duct of the combustion chamber.

[0007] Furthermore, the joints of the two groups of pipe bodies of the combustion fire tube extend into the rear furnace cavity of the furnace body below the motor, and the two groups of pipe bodies of the combustion fire tube with combustion holes extend into the combustion chamber for installation;

[0008] By adopting the above technical solution, the combustion fire tube can be extended into the rear furnace cavity of the furnace body below the motor and connected to the gas pipe, and the tube body of the combustion fire tube can be extended into the combustion chamber for direct combustion.

[0009] Furthermore, the plate body of the air duct plate is provided with air holes for passing air;

[0010] By adopting the above technical solution, the air duct plate has air holes on the plate body through which hot air can pass.

[0011] Furthermore, a return air duct communicating with the combustion chamber is provided below the front furnace cavity wall of the furnace body between the air duct plates;

[0012] By adopting the above technical solution, the heat energy can be directly brought into the front furnace cavity of the furnace body through the return air duct below the front furnace cavity wall of the furnace body.

[0013] Furthermore, the front end disc of the motor is fastened and installed on the rear cavity wall of the furnace body near the inner chamber with bolts;

[0014] By adopting the above technical solution, the motor can be installed and fixed on the rear cavity wall of the furnace body near the inner chamber.

[0015] Furthermore, the output shaft of the motor passes through the circulating fan blade, and the output shaft of the motor passing through the circulating fan blade is screwed with bolts to press against the circulating fan blade;

[0016] By adopting the above technical solution, the circulating fan blades can be installed on the output shaft of the motor in cooperation with the bolts.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model redesigns the structure of the entire hot air circulation furnace at the furnace body of the hot air circulation furnace, installs two groups of tube bodies of the combustion fire tube into the combustion chamber for combustion, and the combustion chamber directly brings the heat energy at the combustion fire tube into the front furnace cavity of the furnace body through the convex return air inlet and the air inlet in conjunction with the return air duct and the air inlet, and after the motor drives the circulation fan blade, the circulation fan blade can send heat into the front furnace cavity between the air duct plates. The hot air circulation furnace has a high thermal energy utilization rate and a fast heating time, which is about 1 times faster than the heating time of the furnace body of the existing hot air circulation furnace.

[0019] In addition, due to the combustion heat supply of the double sets of combustion fire tubes and the corresponding air duct structure, the maximum temperature of the hot air circulation furnace can reach about 300°C, which greatly meets the baking needs of various types of baked foods in the hot air circulation furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a cross-sectional view of a furnace body of a gas combustion tube direct-fired hot air circulation furnace.

[0021] Figure 2 The utility model is a schematic diagram of the installation of a combustion fire tube of a gas combustion tube direct-fired hot air circulation furnace inside a furnace body.

[0022] Figure 3 The utility model is a schematic diagram of the overall structure of a gas combustion tube direct-fired hot air circulation furnace.

[0023] In the figure: 1. air duct plate; 2. inner chamber; 3. circulating fan blades; 4. motor; 5. combustion fire tube; 6. combustion chamber; 7. furnace body; 8. air inlet; 9. convex return air outlet. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0025] like Figure 1-3 As shown, a gas combustion tube direct-fired hot air circulation furnace comprises a furnace body 7, and also comprises an air duct plate 1, an inner chamber 2, a circulation fan blade 3, a motor 4, a combustion fire tube 5 and a combustion chamber 6. An air inlet 8 is opened at the bottom shell of the furnace body 7, and a combustion chamber 6 is arranged in the furnace body 7 above the air inlet 8, an inner chamber 2 and a front furnace cavity are arranged in the furnace body 7 above the combustion chamber 6, a combustion fire tube 5 is installed between the return air duct of the combustion chamber 6 and the rear furnace cavity of the furnace body 7, a motor 4 is installed at the rear cavity wall of the furnace body 7 above the combustion fire tube 5, and the output shaft of the motor 4 extends into the inner chamber 2 and is installed with the circulation fan blade 3, air duct plates 1 are symmetrically installed in the front cavity wall of the furnace body 7, and air holes for ventilation are arranged on the front cavity wall of the furnace body 7 between the air duct plates 1, and a convex return air port 9 communicating with the inner chamber 2 is arranged upward at the return air duct of the combustion chamber 6.

[0026] The joints of the two groups of pipes of the combustion fire tube 5 extend into the rear furnace cavity of the furnace body 7 below the motor 4, and the two groups of pipes of the combustion fire tube 5 with combustion holes extend into the combustion chamber 6 for installation;

[0027] By adopting the above technical solution, the combustion fire tube 5 can be extended into the rear furnace cavity of the furnace body 7 below the motor 4 to be connected to the gas pipe, and the tube body of the combustion fire tube 5 can be extended into the combustion chamber 6 for direct combustion.

[0028] Wherein, the plate body of the air duct plate 1 is provided with air holes for passing air;

[0029] By adopting the above technical solution, the air duct plate 1 has air holes on the plate body through which hot air can pass.

[0030] Among them, a return air duct communicating with the combustion chamber 6 is arranged below the front furnace cavity wall of the furnace body 7 between the air duct plates 1;

[0031] By adopting the above technical solution, heat energy can be directly brought into the front furnace cavity of the furnace body 7 through the return air duct below the front furnace cavity wall of the furnace body 7 .

[0032] The front end of the motor 4 is bolted and installed on the rear wall of the furnace body 7 near the inner chamber 2;

[0033] By adopting the above technical solution, the motor 4 can be installed on the rear cavity wall of the furnace body 7 near the inner chamber 2 for fixation.

[0034] The output shaft of the motor 4 passes through the circulating fan blade 3, and the output shaft of the motor 4 passes through the circulating fan blade 3 and is screwed with bolts to press against the circulating fan blade 3;

[0035] By adopting the above technical solution, the circulating fan blades 3 can be installed on the output shaft of the motor 4 in cooperation with the bolts.

[0036] It should be noted that the utility model is a gas combustion tube direct-fired hot air circulation furnace. The structure of the entire hot air circulation furnace is redesigned at the furnace body 7 of the hot air circulation furnace. The two groups of tube bodies of the combustion fire tubes 5 are loaded into the combustion chamber 6 for combustion. The combustion chamber 6 directly brings the heat energy at the combustion fire tubes 5 into the front furnace cavity of the furnace body 7 through the convex return air port 9 and the air inlet 8 in conjunction with the return air duct and the air inlet. After the motor 4 drives the circulation fan blades 3, the circulation fan blades 3 can deliver heat to the front furnace cavity between the air duct plates 1. This hot air circulation furnace has a high thermal energy utilization rate and a fast heating time. The heating time is about 1 times faster than the heating time of the furnace body of the existing hot air circulation furnace, and the maximum temperature of the hot air circulation furnace can reach about 300°C, which can meet the baking requirements of various types of baked foods.

[0037] It should be noted that the utility model is a gas combustion tube direct-fired hot air circulation furnace. The components in the utility model are all components known to technical personnel in the field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0038] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A gas combustion tube direct-fired hot air circulation furnace, comprising a furnace body (7), characterized in that: The furnace body (7) further comprises an air duct plate (1), an inner chamber (2), a circulating fan blade (3), a motor (4), a combustion fire tube (5) and a combustion chamber (6); an air inlet (8) is provided at the bottom shell of the furnace body (7); a combustion chamber (6) is provided in the furnace body (7) above the air inlet (8); an inner chamber (2) and a front furnace cavity are provided in the furnace body (7) above the combustion chamber (6); a combustion fire tube (5) is provided between the return air duct of the combustion chamber (6) and the rear furnace cavity of the furnace body (7); A motor (4) is installed at the rear cavity wall of the furnace body (7) above the combustion fire tube (5), and the output shaft of the motor (4) extends into the inner cavity (2) and is installed with the circulating fan blade (3). Air duct plates (1) are symmetrically installed in the front cavity wall of the furnace body (7), and air holes for ventilation are arranged at the front cavity wall of the furnace body (7) between the air duct plates (1). A convex return air port (9) communicating with the inner cavity (2) is arranged upward at the return air duct of the combustion chamber (6).

2. A gas combustion tube direct-fired hot air circulation furnace according to claim 1, characterized in that: The joints of the two groups of pipe bodies of the combustion fire tube (5) extend into the rear furnace cavity of the furnace body (7) below the motor (4), and the two groups of pipe bodies of the combustion fire tube (5) provided with combustion holes extend into the combustion chamber (6) for installation.

3. A gas combustion tube direct-fired hot air circulation furnace according to claim 1, characterized in that: The air duct plate (1) is provided with air holes for passing air on the plate body.

4. A gas combustion tube direct-fired hot air circulation furnace according to claim 1, characterized in that: A return air duct communicating with the combustion chamber (6) is provided below the front furnace cavity wall of the furnace body (7) between the air duct plates (1).

5. The gas combustion tube direct-fired hot air circulation furnace according to claim 1, characterized in that: The front end disk of the motor (4) is fastened with bolts and installed on the rear cavity wall of the furnace body (7) near the inner chamber (2).

6. The gas combustion tube direct-fired hot air circulation furnace according to claim 1, characterized in that: The output shaft of the motor (4) passes through the circulating fan blade (3), and the output shaft of the motor (4) passing through the circulating fan blade (3) is screwed with bolts to press against the circulating fan blade (3).

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