Energy-saving and high-efficiency gas type frying furnace

Abstract

The utility model provides an energy -conserving high -efficient gas type frying furnace belongs to kitchen utensil equipment field, including the inner furnace wall of the oil cavity, the opening of oil cavity is upward, is provided with the heat source outside the inner furnace wall, the bottom of oil cavity is lower than the heat source. Through setting up the heat source in the oil cavity side and make the oil cavity bottom lower than the heat source, make the flame only heat the oil cavity side, and form relatively low temperature area in the oil cavity bottom. This structure effectively avoids the flame direct burning the oil cavity bottom, even if the deep -frying powder or food residue adheres to the bottom, also can not cause the burn -through because of local overheating, significantly improved the durability and use safety of oil cavity.

Description

Technical Field

[0001] This utility model belongs to the field of kitchen equipment, and in particular relates to an energy-saving and efficient gas-fired fryer. Background Technology

[0002] A deep fryer is a kitchen appliance that uses edible oil as the main ingredient to fry food. It mainly includes gas fryers and electric fryers. Gas fryers utilize the high temperature generated by burning gas to quickly heat the edible oil in the oil chamber, thus completing the frying process. Existing gas fryers typically heat the oil chamber by directly scorching the bottom with a flame. While this method provides rapid heating, it has significant drawbacks: when frying powder or food residue adheres to the bottom of the oil chamber, these adhered areas are prone to overheating due to poor heat dissipation, eventually burning through. This not only affects the integrity and sealing of the oil chamber but also shortens the fryer's lifespan, increases maintenance costs, and raises safety risks. Summary of the Invention

[0003] Based on the aforementioned problems in the existing technology, this utility model provides an energy-saving and efficient gas-fired fryer, including an inner furnace wall surrounding an oil cavity, the opening of the oil cavity facing upwards, a heat source being arranged outside the inner furnace wall, and the bottom of the oil cavity being lower than the heat source.

[0004] The inner furnace wall forms an oil cavity that is larger at the top than at the bottom. A combustion pipe is fixedly installed on the outer side of the inner furnace wall. The combustion pipe releases fuel for combustion and forms the heat source. The heat generated by the fuel combustion acts on the side of the inner furnace wall.

[0005] The inner furnace wall forms a screen placement groove that is part of the oil cavity. The inner furnace wall forms a fire-receiving side at the bottom of the screen placement groove. The fire-receiving side includes a first arc surface connected to the bottom of the side of the screen placement groove. The first arc surface is concave into the oil cavity and extends downward. A second arc surface is connected to the end of the first arc surface away from the screen placement groove. The second arc surface is concave into the outside of the screen placement groove. The first arc surface and the second arc surface are connected to form an S-shaped fire-receiving side. The lower ends of several second arc surfaces are spliced ​​together to form the bottom of the oil cavity.

[0006] The diameter of the first arc surface is larger than that of the second arc surface, and the end of the first arc surface that approaches the opening of the oil cavity crosses the highest point of the circle.

[0007] The bottom of the oil chamber is higher at one end than at the other end, and an oil drain pipe is provided at the lower end of the bottom of the oil chamber. The oil drain pipe is equipped with an oil valve.

[0008] The inner furnace wall has an inwardly bent placement platform on the side of the screen placement groove.

[0009] The energy-saving and efficient gas-fired fryer also includes an outer furnace wall, an inner furnace wall fixedly installed inside the outer furnace wall, a combustion tube fixedly installed in the outer furnace wall and located between the inner furnace wall and the outer furnace wall, one end of the combustion tube being closed, the other end of the combustion tube passing through the outer furnace wall and connected to an external gas source, and a number of gas holes being provided on the upper surface of the combustion tube.

[0010] The outer furnace wall is provided with a flue gas outlet at the corresponding combustion tube, and a flue gas pipe is fixedly installed on the outer side of the outer furnace wall. The flue gas outlet is connected to the flue gas pipe, and the flue gas pipe extends upward.

[0011] The beneficial effects of this invention are as follows: By placing the heat source on the side of the oil cavity and lowering the bottom of the oil cavity below the heat source, the flame only heats the side of the oil cavity, creating a relatively low-temperature zone at the bottom. This structure effectively prevents the flame from directly scorching the bottom of the oil cavity. Even if frying powder or food residue adheres to the bottom, it will not burn through due to localized overheating, significantly improving the durability and safety of the oil cavity. Furthermore, the S-shaped flame-receiving side significantly increases the contact area between the inner furnace wall and the flame, and the curved surface guides the flame to flow closely along the furnace wall, reducing heat transfer dead zones, enhancing the radiation and convection heat transfer efficiency of the high-temperature airflow to the furnace wall, improving energy utilization and thus reducing energy consumption, and increasing frying efficiency. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of an energy-saving and efficient gas-fired fryer.

[0013] Figure 2 This is a three-dimensional structural diagram of an energy-saving and efficient gas-fired fryer from another angle.

[0014] Figure 3 This is a cross-sectional structural diagram of an energy-saving and efficient gas-fired fryer.

[0015] Figure 4 This is a schematic diagram showing the connection between the inner furnace wall and the combustion tube.

[0016] Figure 5 This is a schematic diagram showing the connection between the inner furnace wall and the combustion tube at another angle.

[0017] Figure 6 This is a side view of the inner furnace wall.

[0018] Figure 7 This is a three-dimensional structural diagram of the inner furnace wall viewed from below. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0020] As attached Figure 1-7The energy-saving and efficient gas-fired fryer shown includes a cubic outer furnace wall 1, which is composed of multiple sheet metal pieces bent and fixed together with bolts. The upper and lower edges of the sheet metal of the outer furnace wall 1 can form 180° folds 2, and fireproof and heat-insulating asbestos is fixedly installed through the cooperation of the folds 2 and bolts. An inner furnace wall 3 is fixedly installed inside the outer furnace wall 1 to form an oil cavity with the opening of the oil cavity facing upward. The inner furnace wall 3 is made of several sheet metal pieces bent and welded together. The upper part of the inner furnace wall 3 forms a cuboid screen placement groove 4 for placing the frying screen. The inner furnace wall 3 has inwardly bent placement platforms 5 on the side of the screen placement groove 4. When the frying screen is placed into the screen placement groove 4, it is supported by the placement platforms 5. The screen placement groove 4 is part of the oil cavity. The two opposite sides of the bottom of the two long sides of the inner furnace wall 3 corresponding to the screen placement groove 4 form two fire-receiving sides. The two fire-receiving sides are symmetrically arranged and are used to transfer the heat of the flame to the oil chamber. The other two opposite sides of the inner furnace wall 3 are vertically arranged. The fire-receiving side includes a first arc surface 6 connected to the bottom of the side of the screen placement groove 4. The first arc surface 6 is concave into the oil cavity and extends downward. The end of the first arc surface 6 away from the screen placement groove 4 is connected to a second arc surface 7. The second arc surface 7 is concave to the outside of the screen placement groove 4. The first arc surface 6 and the second arc surface 7 are connected to form an S-shaped fire-receiving side. The area of ​​the S-shaped surface is much larger than the area of ​​a vertical plane of the same height, thus greatly increasing the contact area between the inner furnace wall 3 and the flame and high-temperature airflow. The first arc surface 6 and the second arc surface 7 can be made by bending the same piece of sheet metal. The diameter of the first arc surface 6 is larger than the diameter of the second arc surface 7, so that the inner furnace wall 3 forms an oil cavity with the upper part larger than the lower part. The end of the first arc surface 6 near the opening of the oil cavity crosses the highest point of the circle, which is equivalent to forming a near-horizontal outer edge or an outer edge with the middle concave upward at the bottom of the screen placement groove 4. The setting of the outer edge can play a role in suppressing the fire and make the upper part of the first arc surface 6 more fully contact the outer flame at the top of the flame, improving the heat transfer efficiency and making full use of the combustion heat. The lower ends of the two second arc surfaces 7 are joined together to form the bottom of the oil cavity 8. One end of the bottom of the oil cavity 8 is higher than the other end. An oil drain pipe 9 is provided at the lower end of the bottom of the oil cavity 8. An oil valve 10 is provided on the oil drain pipe 9. After frying, the oil valve 10 can be opened to drain the remaining oil in the oil cavity or to drain the water used to clean the oil cavity.

[0021] A combustion tube 11 is provided on the outer side of the second arc surface 7 of the inner furnace wall 3. The combustion tube 11 is fixedly installed on the outer furnace wall 1 by a mounting bracket and releases fuel for combustion to form a flame heat source. The flame acts on the side of the inner furnace wall 3. The combustion tube 11 is U-shaped and extends from one end of one of the fire-receiving sides of the inner furnace wall 3 to the other end, then around to the corresponding end of the other fire-receiving side, and then extends to the other end of that fire-receiving side. One end of the combustion tube 11 is closed, and the other end of the combustion tube 11 passes through the outer furnace wall 1 and connects to an external gas source. Several gas holes are provided on the upper surface of the combustion tube 11. Since the combustion tube 11 is located on the outer side of the second arc surface 7, the bottom of the oil cavity is lower than the combustion tube 11, which serves as the heat source. A flue gas outlet 12 is provided on the outer furnace wall 1 at the middle bend corresponding to the combustion tube 11. A flue gas pipe 13 is fixedly installed on the outer side of the outer furnace wall 1. The flue gas pipe 13 is also made of sheet metal bent and welded. The flue gas outlet 12 connects to the flue gas pipe 13, and the flue gas pipe 13 extends upward.

[0022] When the fryer provided in this embodiment is in use, the gas is sprayed out from the gas hole and ignited by the igniter. The flame covers the fire-receiving side under the guidance of the second arc surface 7 and the first arc surface 6, so that the fire-receiving sides on both sides of the inner furnace wall 3 can come into contact with the flame. The outer side of the inner furnace wall 3 is covered with refractory materials such as microporous foam ceramics, which can further optimize the heat preservation performance, extend the service life of the equipment and maintain the stability of the oil temperature.

[0023] In addition, the bottom of the oil chamber is lower than the combustion tube 11, so the flame cannot directly burn the bottom 8 of the oil chamber. Therefore, a relatively low temperature zone is formed at the bottom 8 of the oil chamber. Even if some frying powder or food residue falls and sticks to the bottom 8 of the oil chamber, it will not cause the bottom 8 of the oil chamber to overheat and burn through.

[0024] The above-described embodiments are merely one implementation of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An energy-efficient gas-fired fryer, comprising an inner furnace wall (3) surrounding an oil cavity, the opening of the oil cavity facing upwards, and a heat source disposed outside the inner furnace wall (3), characterized in that, The bottom of the oil cavity is below the heat source.

2. The energy-saving and efficient gas-fired fryer according to claim 1, characterized in that, The inner furnace wall (3) forms an oil cavity with the upper part larger than the lower part. A combustion pipe (11) is fixedly installed on the outer side of the inner furnace wall (3). The combustion pipe (11) releases fuel for combustion and forms the heat source. The heat generated by the fuel combustion acts on the side of the inner furnace wall (3).

3. The energy-saving and efficient gas-fired fryer according to claim 2, characterized in that, The inner furnace wall (3) encloses a screen placement groove (4) which is part of the oil cavity. The inner furnace wall (3) forms a fire-receiving side at the bottom of the side of the screen placement groove (4). The fire-receiving side includes a first arc surface (6) connected to the bottom of the side of the screen placement groove (4). The first arc surface (6) is concave into the oil cavity and extends downward. A second arc surface (7) is connected to one end of the first arc surface (6) away from the screen placement groove (4). The second arc surface (7) is concave to the outside of the screen placement groove (4). The first arc surface (6) and the second arc surface (7) are connected to form an S-shaped fire-receiving side. The lower ends of several second arc surfaces (7) are spliced ​​together to form the bottom of the oil cavity (8).

4. The energy-saving and efficient gas-fired fryer according to claim 3, characterized in that, The diameter of the first arc surface (6) is greater than that of the second arc surface (7), and the end of the first arc surface (6) that is close to the opening of the oil cavity crosses the highest point of the circle.

5. The energy-saving and efficient gas-fired fryer according to claim 3, characterized in that, One end of the bottom of the oil chamber (8) is higher than the other end. An oil drain pipe (9) is provided at the lower end of the bottom of the oil chamber (8), and an oil valve (10) is provided on the oil drain pipe (9).

6. The energy-saving and efficient gas-fired fryer according to claim 3, characterized in that, The inner furnace wall (3) has an inwardly bent placement platform (5) on the side of the screen placement groove (4).

7. An energy-efficient gas-fired fryer according to any one of claims 2-6, characterized in that, It also includes an outer furnace wall (1), the inner furnace wall (3) is fixedly installed inside the outer furnace wall (1), the combustion pipe (11) is fixedly installed in the outer furnace wall (1) and located between the inner furnace wall (3) and the outer furnace wall (1), one end of the combustion pipe (11) is closed, the other end of the combustion pipe (11) passes through the outer furnace wall (1) and is connected to an external gas source, and the upper surface of the combustion pipe (11) is provided with several gas holes.

8. The energy-saving and efficient gas-fired fryer according to claim 7, characterized in that, The outer furnace wall (1) is provided with a flue gas outlet (12) at the corresponding combustion pipe (11), and a flue gas pipe (13) is fixedly installed on the outer side of the outer furnace wall (1). The flue gas outlet (12) is connected to the flue gas pipe (13), and the flue gas pipe (13) extends upward.

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