Hot air fryer with removable, actively heated pizza stone

Abstract

Hot air fryer, in particular hot air fryer oven, with a cooking chamber (16) and with a removable unit (3) with an actively heated pizza stone (12), characterized in that ◯ the unit (3) includes a pizza stone heater (13), ◯ in the cooking chamber (16) a temperature sensor (18) of a temperature control unit (4) is arranged such that it lies within the influence area of ​​the pizza stone heater (13), ◯ the pizza stone heater (13) is supplied with electricity via a connection (20) behind the cooking chamber (16), ◯ between the pizza stone (12) and a top heating element (9) a particularly hot area is formed for the preparation of food, and ◯ a cooking chamber fan (8) is provided at the top of the cooking chamber (16) which distributes the heat generated by the top heat (9) in the cooking chamber (16).

Description

[0001] The invention relates to a hot air fryer or a hot air fryer oven for preparing food, in particular pizza, tarte flambée, bread, and pastries. The invention is characterized by an innovative combination of hot air technology and an actively heated pizza stone, which enables optimal preparation of food with a crispy texture.

[0002] Air fryers have gained popularity as kitchen appliances in recent years. They enable fast, low-fat cooking of food by circulating hot air within the cooking chamber. The hot air flows around the food from all sides, cooking it evenly. By mixing in fresh air from the surrounding area, the air in the cooking chamber is prevented from becoming saturated with moisture, which tends to make food crispier.

[0003] However, conventional air fryers reach their limits when preparing foods that require a crispy base, such as pizza. Hot air circulation alone is often insufficient to heat the dough sufficiently and remove the moisture necessary for a crispy base. While the pizza topping may be cooked, the base often remains soft.

[0004] To circumvent this problem, pizza stones are used in ovens. Pizza stones are made of materials with high heat storage capacity, such as cordierite or fireclay. They store the oven's heat and distribute it evenly to the pizza base, making it crispy. One disadvantage of pizza stones in conventional ovens, however, is the long heating time. If the pizza stone isn't placed directly on a heat source, it can take a very long time to reach the desired temperature. This increases the cooking time and can lead to uneven baking results.

[0005] Furthermore, conventional air fryers are often limited in their functions and cooking options. They are primarily designed for preparing French fries, chicken nuggets, and similar dishes. The preparation of pizza, tarte flambée, bread, or pastries is only possible to a limited extent with conventional air fryers.

[0006] The invention aims to provide an air fryer or air fryer oven that enables the optimal preparation of pizza and other foods with a crispy texture. The invention is intended to overcome the disadvantages of the prior art and enable fast, even, and versatile food preparation.

[0007] This object is achieved according to the invention by a hot air fryer with a cooking chamber (16) and a removable unit (3) with an actively heated pizza stone (12). The unit (3) comprises a pizza stone (12), a pizza stone heater (13) in the form of a tubular heating element, and a pizza stone housing (14) that covers the tubular heating element.

[0008] The use of an actively heated pizza stone in an air fryer is an innovative concept that combines the advantages of both technologies. The pizza stone ensures a crispy base, while the hot air circulation ensures even cooking of the food. Thanks to the removable unit (3), the air fryer oven can be operated with or without the heated pizza stone. This increases the versatility of the appliance and allows for the preparation of a wide range of dishes. The user can use the air fryer with or without the pizza stone unit (3) as needed.

[0009] To prepare pizza, the unit (3) is inserted into the cooking chamber (16). The positioning of the unit (3) in the cooking chamber (16) creates a compact and hot area between the heated pizza stone (12) and the top heat (9), which enables optimal pizza preparation. The actively heated pizza stone (12) heats up quickly and ensures a crispy pizza base. The top heat (9) of the air fryer cooks the pizza toppings, while the cooking chamber fan (8) ensures even heat distribution. By positioning the pizza stone unit (3) in the cooking chamber (16), the air flow between the fresh air supply (17) and the housing ventilation (5) is restricted. This reduces the admixture of fresh air into the cooking chamber (16) and thus reduces the drying effect of a hot air fryer, which further optimizes the conditions for baking pizza.

[0010] The invention provides that the bottom heat (7) is automatically switched off when the pizza stone unit (3) is inserted into the cooking chamber (16). This prevents overheating of the pizza stone (12) and ensures optimal baking results. The pizza stone heater (13) has a high power output to quickly heat the pizza stone (12) to the desired temperature. A temperature controller (4) precisely monitors and regulates the temperature of the pizza stone (12) to ensure even baking results and prevent the pizza from burning.

[0011] The pizza stone heater (13) is powered via a power connection (20). To ensure simple and user-friendly operation, a connection (20) is provided in the rear area of ​​the cooking chamber (16). This connection (20) includes a ground connection socket (24) and power connection sockets (21). The pizza stone unit (3) has a power connection plug (23) and a ground connection plug (22). When the pizza stone unit (3) is inserted into the cooking chamber (16), the power connection is established automatically. The connection (20) is located in the air gap (15) to prevent overheating.

[0012] The invention enables the preparation of a wide variety of dishes, especially pizza, tarte flambée, bread, and pastries. The combination of hot air and an actively heated pizza stone allows these dishes to be prepared quickly, efficiently, and with an optimal consistency. Fig. 1 Front view of the device according to the invention. Fig. 2 View of the device according to the invention slightly rotated compared to the front view. Fig. 3 View of the device according to the invention slightly rotated to the front view with the door open, with a view into the cooking chamber (16) from below. Fig. 4 View of the device according to the invention with the door (2) open, slightly rotated compared to the front view. Fig. 5 oblique, side view of the device according to the invention with a view through the window of the door (2) into the cooking chamber (16). Fig. 6 oblique, rear view of a sectional view of the device according to the invention with a view of the fan motor (11), the housing ventilation (6), the cooking chamber fan (8), into the interior of the inserted pizza stone unit (3). Fig. 7 oblique, side view of a sectional view of the device according to the invention with a view of the housing fan (10), the housing ventilation (6), the cooking chamber fan (8), into the interior of the inserted pizza stone unit (3). Fig. 8 oblique, side view of a sectional view of the device according to the invention with a view of the housing fan (10), the air gap (15), the cooking chamber fan (8), the cooking chamber ventilation (5). Fig. 9 Sectional view of the device according to the invention showing the details of the top heat heater (9), fresh air supply (17) and fan cooking chamber (8) and fan housing (10). Fig. 10 Sectional view of the device according to the invention showing the details of the positioning of the temperature sensor (18) relative to the cutout (19) and the pizza stone heater (13). Fig. 11 Sectional view of the device according to the invention showing the details of the positioning of the temperature sensor (18) relative to the pizza stone (12) and the pizza stone heater (13). Fig. 12 Sectional view of the device according to the invention for positioning the terminal (20). Fig. 13 View of the device according to the invention slightly rotated compared to the front view with the door open, with a view into the cooking chamber (16) with the pizza stone unit (3) removed. The power connection sockets (21) and earth connection socket (22) and the temperature sensor (18). Fig. 14 Pizza stone unit (3) Fig. 15 Exploded view of the pizza stone unit (3) Fig. 16 Oblique rear view of the device according to the invention, with the door (2) open.

[0013] Advantages of the invention: • Even cooking of pizza and other dishes • Crispy base thanks to actively heated pizza stone • Versatility thanks to removable pizza stone unit • Energy efficiency through targeted heat supply • Fast preparation thanks to actively heated pizza stone • User-friendliness through automatic power connection • Compact design thanks to the integration of the pizza stone into the hot air fryer • Safe operation through temperature control and housing cooling Summary:

[0014] The invention relates to a hot air fryer with an actively heated pizza stone, which enables crispy pizza and other dishes. A removable pizza stone with integrated heating is inserted into the cooking chamber, creating a compact, heated area. The bottom heat is switched off, while the top heat and a cooking chamber fan ensure even heat distribution. A temperature controller prevents the pizza stone from overheating. The invention combines the advantages of hot air fryers and pizza stones and is versatile for pizza, tarte flambée, bread, and pastries. List of reference symbols: 1 Housing: The housing encloses all components of the air fryer and forms the outer shell of the device. 2 Door: The door provides access to the cooking chamber and closes it during operation. 3 Heated Pizza Stone Unit: This unit consists of the pizza stone, pizza stone heater, and pizza stone housing. It is removable and allows for the preparation of dishes with a crispy base. 4 Temperature controller: The temperature controller monitors and regulates the temperature of the pizza stone. 5 Cooking chamber ventilation: The cooking chamber ventilation ensures the circulation of hot air in the cooking chamber and enables even cooking of the food. 6 Case ventilation: The case ventilation cools the case and prevents overheating. 7 Bottom heat heaters: The bottom heat heaters are located in the lower area of ​​the cooking chamber and are used to heat the food from below. 8 Cooking chamber fan: The cooking chamber fan circulates the hot air in the cooking chamber and ensures even heat distribution. 9 Top heat heating: The top heat heating is located in the upper area of ​​the cooking chamber and is used to heat the food from above. 10 Fan housing: The fan housing cools the housing and the electronics. 11 Fan motor: The fan motor drives the fan cooking chamber and the fan housing. 12 Pizza stone: The pizza stone is made of a material with high heat storage capacity and stores the heat to create a crispy base. 13 Pizza stone heating: The pizza stone heating actively heats the pizza stone and enables quick and efficient food preparation. 14 Pizza stone housing: The pizza stone housing encloses the pizza stone heater and holds the pizza stone. 15 Air gap: The air gap between the cooking chamber and the housing serves as thermal insulation and prevents the housing from overheating. 16 Cooking chamber: The cooking chamber is the area in which the food is prepared. 17 Fresh air supply: The fresh air supply allows fresh air to be supplied into the cooking chamber and ensures faster moisture removal from the food. 18 Temperature sensor: The temperature sensor measures the temperature of the pizza stone. 19 Cutout: The cutout allows the pizza stone heating temperature to be connected to the temperature sensor. 20 Connection: The connection is used to supply power to the pizza stone heater. 21 Power socket: The power socket is part of the connector and is used to accommodate the power connector. 22 Earthing connection: The earthing connection is used to earth the pizza stone heater. 23 Power plug: The power plug is part of the pizza stone unit and is plugged into the power socket. 24 Grounding connection socket: The grounding connection socket is part of the connection and is used to accommodate the grounding connection plug.

Claims

[1] Hot air fryer, in particular hot air fryer oven, with a cooking chamber (16) and with a removable unit (3) with an actively heated pizza stone (12), characterized by , that ◯ the unit (3) comprises a pizza stone heater (13), ◯ a temperature sensor (18) of a temperature control unit (4) is arranged in the cooking chamber (16) in such a way that it lies within the range of influence of the pizza stone heating (13), ◯ the pizza stone heating (13) is supplied with power via a connection (20) behind the cooking chamber (16), ◯ a particularly hot area for preparing food is formed between the pizza stone (12) and a top heat (9), and ◯ a cooking chamber fan (8) is provided on the top of the cooking chamber (16), which distributes the heat generated by the top heat (9) in the cooking chamber (16). [2] Hot air fryer according to claim 1, characterized bythat the unit (3) is removable so that the hot air fryer can be operated with and without the unit (3). [3] Hot air fryer according to claim 1 or 2, characterized by that the pizza stone (12) is square and fits into the cooking chamber (16). [4] Hot air fryer according to one of the preceding claims, characterized by that the unit (3) comprises a power connection plug (23) and an earth connection plug (24), and that the connection (20) comprises an earth connection socket (24) and power connection sockets (21), wherein the power connection is automatically established when the unit (3) is pushed into the cooking chamber (16). [5] Hot air fryer according to one of the preceding claims, characterized by that the connection (20) is arranged in the air gap (15). [6] Hot air fryer according to one of the preceding claims, characterized bythat the hot air fryer includes a bottom heat (7) which is switched off when the unit (3) is in operation. [7] Hot air fryer according to one of the preceding claims, characterized by that the pizza stone unit (3) is positioned in the cooking chamber (16) in such a way that the air flow between the fresh air supply (17) and the cooking chamber ventilation (5) is restricted and thus the admixture of fresh air in the cooking chamber (16) is reduced.

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