A gas-fired heating energy-saving furnace

Abstract

This utility model discloses a gas-fired heating and energy-saving furnace, relating to the field of heating and drying equipment for coating. It includes an oven body and a burner housing. The burner housing is located below the oven body, and a rack is installed inside the oven body. Guide rails are installed below the rack, and guide wheels are installed at the four corners of the rack's bottom. The rack is mounted on the guide rails via these four bottom guide wheels. A hanging rod is horizontally installed inside the rack. A return air vent and a hot air outlet are located at the bottom of the oven body. Its structure is rationally designed, simple to operate, and convenient to use. It utilizes a heat recovery jacket to collect hot air, which is then delivered to the burner for combustion via a variable frequency combustion fan and an energy-saving hot air guide pipe, replacing traditional cold air combustion. This reduces burner energy consumption, improves gas utilization, and effectively saves energy costs. The hot air circulation system ensures more uniform heat distribution within the furnace, resulting in consistent product drying and preventing uneven drying from affecting the quality of subsequent spraying processes, thus guaranteeing the quality of the product coating.

Description

Technical fields:

[0001] This utility model relates to a gas-fired heating and energy-saving furnace, belonging to the field of heating and drying technology for coating equipment. Background technology:

[0002] In the coating production process, product drying is a crucial step, and its energy consumption and drying effect directly impact production costs and product quality. Traditional gas-fired drying equipment uses naturally cooled air to aid combustion in the burner, resulting in significant heat waste and uneven drying due to large temperature differences, which affects subsequent spraying processes. Therefore, the development of energy-efficient gas-fired heating furnaces with superior drying performance has become an industry requirement. Utility Model Content:

[0003] To address the above problems, the technical problem to be solved by this utility model is to provide a gas-fired heating energy-saving furnace.

[0004] This utility model discloses a gas-fired heating energy-saving furnace, which includes an oven body and a burner box. The burner box is located below the oven body, and a baking rack is installed inside the oven body. A guide rail is located below the baking rack, and guide wheels are installed at the four corners of the bottom of the baking rack. The baking rack is mounted on the guide rail via the four guide wheels at the bottom. A hanging rod is arranged horizontally inside the baking rack, and a return air vent and a hot air outlet are provided at the bottom of the oven body.

[0005] The burner housing is equipped with a cover on top, and the cover has two return air inlets and two hot air outlets, which correspond to the first return air inlet and the first hot air outlet on the bottom of the oven body. The burner housing contains the burner and the oven body. The oven body contains an energy-saving hot air guide pipe, one end of which is connected to a combustion aid manifold, which is connected to the burner. One end of the burner is connected to a natural gas inlet pipe. The oven body has a first hot air outlet and a second heat absorption air outlet at both ends. The burner housing also has a second hot air outlet at one end, which corresponds to the second hot air outlet on the cover. A variable frequency combustion aid fan is installed at the front of the burner housing.

[0006] Preferably, a hot air circulation fan is installed at one end of the burner housing, and the hot air circulation fan is equipped with fan blades.

[0007] Preferably, a filter cotton is provided below the burner.

[0008] Preferably, the burner housing is provided with an inspection door.

[0009] Preferably, the furnace body adopts a double-layer structure design, with an outer high-temperature resistant protective layer and an inner heat insulation layer, and a heat recovery interlayer is provided between the high-temperature resistant protective layer and the heat insulation layer.

[0010] The beneficial effects of this utility model are as follows: It has a reasonable structural design, simple operation, and convenient use. It uses a heat recovery jacket to collect hot air, which is then transported to the burner for combustion through a variable frequency combustion fan and an energy-saving hot air guide pipe. This replaces the traditional cold air combustion, reduces the energy consumption of the burner, improves the gas utilization rate, and effectively saves energy costs. The hot air circulation system makes the heat distribution in the furnace more uniform, ensuring consistent product drying effect and avoiding the impact of uneven drying on the quality of subsequent spraying processes, thus guaranteeing the coating quality of the product. Attached image description:

[0011] For ease of explanation, this utility model is described in detail below with reference to the specific embodiments and accompanying drawings.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a side view of the present invention;

[0014] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0015] Figure 4 This is a schematic diagram of the burner housing in this utility model;

[0016] Figure 5 This is a schematic diagram of the internal structure of the burner housing in this utility model. Figure 1 ;

[0017] Figure 6 This is a schematic diagram of the internal structure of the burner housing in this utility model. Figure 2 ;

[0018] Figure 7 This is a schematic diagram of the structure of the filter cotton in this utility model;

[0019] Figure 8 This is a schematic diagram of the burner in this utility model.

[0020] 1-Oven body; 11-Grill rack; 12-Guide rail; 13-Guide roller; 14-Hanging rod; 15-Return air vent 1; 16-Hot air outlet 1; 2-Burner housing; 21-Hot air cover; 2101-Return air vent 2; 2102-Hot air outlet 2; 22-Burner; 23-Oven body; 231-Hot air outlet 1; 232-Heat absorption air outlet; 24-Energy-saving hot air guide pipe; 25-Combustion aid distributor; 26-Natural gas inlet pipe; 27-Hot air outlet 2; 28-Variable frequency combustion aid fan; 29-Hot circulation fan; 291-Fan blade; 210-Filter cotton; 211-Inspection door. Detailed implementation method:

[0021] like Figures 1-8As shown, this specific embodiment adopts the following technical solution: It includes an oven body 1 and a burner box 2. The burner box 2 is arranged below the oven body 1. A baking rack 11 is arranged inside the oven body 1. A guide rail 12 is arranged below the baking rack 11. Guide wheels 13 are installed on the four corners of the bottom of the baking rack 11. The baking rack 11 is set on the guide rail 12 through the four guide wheels 13 at the bottom. The cooperation between the guide wheels 13 and the guide rail 12 can make the baking rack 11 convenient to enter and exit the oven body 1, which is convenient for product loading and unloading and equipment cleaning. A hanging rod 14 is arranged horizontally inside the baking rack 11 for placing products to be processed. A return air vent 15 and a hot air outlet 16 are arranged at the bottom of the oven body 1.

[0022] A cover 21 is provided on the top of the burner housing 2. The cover 21 is provided with a return air inlet 2101 and a hot air outlet 2102, which are corresponding to the return air inlet 15 and the hot air outlet 16 at the bottom of the oven body 1. The burner housing 2 is provided with a burner 22 and an oven body 23. An energy-saving hot air guide pipe 24 is provided inside the oven body 23. One end of the energy-saving hot air guide pipe 24 is connected to a combustion aid manifold 25, which is connected to the burner 22. One end of the burner 22 is connected to a natural gas inlet pipe 26. A hot air outlet 231 and a heat absorption air outlet 232 are provided at both ends of the interior of the oven body 23. A hot air outlet 27 is provided at one end of the interior of the burner housing 2, which is corresponding to the hot air outlet 2102 on the cover 21. A variable frequency combustion aid fan 28 is installed at the front of the burner housing 2.

[0023] A heat circulation fan 29 is installed at one end of the burner housing 2. The heat circulation fan 29 is equipped with a fan blade 291. The heat circulation fan 29 drives the hot air circulation. The energy-saving hot air guide pipe 24 guides the hot air to flow evenly and sends it out through the hot air outlet 231. The heat absorption air outlet 232 recovers the waste heat. The return air outlet assists the airflow circulation, so as to realize the full utilization and even distribution of heat.

[0024] A filter cotton 210 is installed below the burner 22, which is mainly used to filter dust particles and effectively protect the variable frequency combustion fan 28 so that only clean air enters.

[0025] The burner housing 2 is equipped with an inspection door 211, which facilitates the inspection and maintenance of the combustion system, heat circulation system and other internal components of the furnace body 23.

[0026] The furnace body 23 adopts a double-layer structure design. The outer layer is a high-temperature resistant protective layer, and the inner layer is a heat insulation layer. A heat recovery interlayer is set between the high-temperature resistant protective layer and the heat insulation layer. It is mainly used to collect and temporarily store the hot air that can be used during the hot air conveying and drying process in the furnace body 23, thereby reducing heat loss.

[0027] The working principle of this specific implementation is as follows: After the product enters the gas-heated energy-saving furnace, the furnace initially heats and generates hot air. The heat recovery layer collects the hot air, and the variable frequency combustion fan 28 starts to extract the heat energy recovery jacket hot air. The hot air is sent to the combustion distributor 25 through the energy-saving hot air guide pipe 24 and mixed with the gas before entering the burner 22 for combustion. At the same time, the drying circulation system allows the hot air to circulate in the oven body 1 to uniformly heat and dry the product. After drying, the product enters the next spraying process. During operation, the internal components can be observed and maintained through the inspection door 211.

[0028] This specific implementation method has a reasonable structural design, simple operation, and convenient use. It utilizes a heat recovery jacket to collect hot air, which is then delivered to the burner for combustion through a variable frequency combustion fan and an energy-saving hot air guide pipe. This replaces the traditional cold air combustion, reduces burner energy consumption, improves gas utilization, and effectively saves energy costs. The hot air circulation system makes the heat distribution in the furnace more uniform, ensuring consistent product drying and avoiding the impact of uneven drying on the quality of subsequent spraying processes, thus guaranteeing the coating quality of the products.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A gas-fired heating energy-saving furnace, characterized in that: It includes an oven body (1) and a burner box (2). The burner box (2) is located below the oven body (1). A rack (11) is located inside the oven body (1). A guide rail (12) is located below the rack (11). Guide wheels (13) are installed on the four corners of the bottom of the rack (11). The rack (11) is mounted on the guide rail (12) via the four guide wheels (13) at the bottom. A hanging rod (14) is horizontally arranged inside the rack (11). A return air vent (15) and a hot air outlet (16) are located at the bottom of the oven body (1). A cover (21) is provided on the top of the burner housing (2). The cover (21) is provided with a second return air inlet (2101) and a second hot air outlet (2102), which correspond to the first return air inlet (15) and the first hot air outlet (16) at the bottom of the oven body (1). The burner housing (2) is provided with a burner (22) and an oven body (23). An energy-saving hot air guide pipe (24) is provided in the oven body (23). One end of the energy-saving hot air guide pipe (24) is connected to a combustion aid distributor (2). 5) The combustion aid pipe (25) is connected to the burner (22). One end of the burner (22) is connected to the natural gas inlet pipe (26). The furnace body (23) has a hot air outlet (231) and a heat absorption air outlet (232) at both ends. The burner box (2) has a hot air outlet (27) at one end, which corresponds to the hot air outlet (2102) on the box cover (21). A variable frequency combustion aid fan (28) is installed in front of the burner box (2).

2. The gas-fired heating energy-saving furnace according to claim 1, characterized in that: A hot air circulation fan (29) is installed at one end of the burner housing (2), and a fan blade (291) is installed on the hot air circulation fan (29).

3. The gas-fired heating energy-saving furnace according to claim 1, characterized in that: A filter cotton (210) is provided below the burner (22).

4. The gas-fired heating energy-saving furnace according to claim 1, characterized in that: The burner housing (2) is provided with an inspection door (211).

5. A gas-fired heating energy-saving furnace according to claim 1, characterized in that: The furnace body (23) adopts a double-layer structure design, with an outer layer being a high-temperature resistant protective layer and an inner layer being a heat insulation layer. A heat recovery interlayer is provided between the high-temperature resistant protective layer and the heat insulation layer.

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