Air fryer with rear-mounted and front-blowing hot air device

Abstract

The utility model discloses an air fryer with a rear-mounted and front-blowing hot air device, belongs to cooking electric appliances, and aims to solve the problem that an existing air fryer with hot air blowing from back to front cannot uniformly heat food. A flow dividing channel communicating the hot air device and the top of the cooking cavity is arranged on the rear side of the pot, a flow guiding structure used for guiding hot air to the inner cavity of the pot is arranged on the top of the cooking cavity, and at least part of the hot air generated by the hot air device flows to the top of the cooking cavity through the flow dividing channel in the working process and is guided by the flow guiding device to flow to the inner cavity of the pot. The hot air can reach food far away from the hot air device, and at least part of the hot air is blown from top to bottom, so that the hot air uniformly heats the food, and uniform cooking of the food is ensured. The flow guide structure comprises the flow guide plate or / and the flow guide face, the flow guide effect is improved, heat loss is reduced, and noise is lowered.

Description

Technical Field

[0001] The utility model belongs to cooking appliances, and particularly relates to an air fryer with a rear-mounted hot air device for blowing forward. Background Art

[0002] In existing air fryers, hot air is mostly blown downward from the top to cook food. However, when two cooking pots are stacked vertically, the hot air from the top is blocked and difficult to reach the lower cooking pot. Configuring the product to blow hot air from the rear to the front and providing a hot air device for each of the vertically stacked cooking pots can enable cooking of the two vertically stacked cooking pots. However, since the hot air blows from the rear to the front, the distances between the food and the hot air device are different, and the hot air cannot heat the food evenly as when blowing downward from the top, resulting in uneven cooking of the food and poor cooking effect. Content of the Utility Model

[0003] The technical problem to be solved and the technical task proposed by the utility model are to overcome the defect that the existing air fryer with hot air blowing from the rear to the front cannot heat the food evenly, and to provide an air fryer with a rear-mounted hot air device for blowing forward that can make the hot air heat the food evenly.

[0004] To achieve the above object, the air fryer with a rear-mounted hot air device for blowing forward of the utility model includes:

[0005] A cooking cavity with a front opening;

[0006] A pot having an inner cavity with an upper opening, and it can be placed in the cooking cavity through the front opening or taken out from the cooking cavity;

[0007] A hot air device located at the rear side of the cooking cavity and configured to blow hot air forward;

[0008] A diversion channel located at the rear side of the pot and connecting the hot air device and the top of the cooking cavity;

[0009] A diversion structure located at the top of the cooking cavity for diverting the hot air to the inner cavity of the pot.

[0010] Accordingly, guiding at least part of the hot air generated by the hot air device to flow through the diversion channel to the top of the cooking cavity and being diverted by the diversion device to flow into the inner cavity of the pot, the hot air can reach the food that is far from the hot air device, and at least part of it blows downward from the top, making the hot air heat the food evenly and ensuring even cooking of the food.

[0011] Preferably, the cooking cavity is bounded by a top wall, a bottom wall, a rear wall and two side walls, and the diversion structure is disposed on the top wall. The structure is simplified.

[0012] Preferably, an air outlet corresponding to the hot air device is provided on the rear wall of the cooking cavity. It is used to guide the hot air to flow forward.

[0013] Preferably, a number of ventilation holes are distributed on the rear wall of the pot. These through-holes serve to divide the hot air flow. They allow hot air to directly pass through the ventilation holes and enter the inner cavity of the pot, heating the food closer to the hot air device at the rear side of the pot immediately. They also increase the air resistance, forcing the hot air to change direction and flow through the diversion channel towards the top of the cooking cavity, and then further flow downward under the guidance of the diversion structure and blow towards the food in the pot, heating the food farther from the hot air device at the front side of the pot. Overall, the hot air from the hot air device can evenly blow towards the food to heat it, ensuring uniform cooking of the food.

[0014] Preferably, the diversion structure includes a diversion plate. The diversion plate is strip-shaped, extending in the front-rear direction in terms of its length and in the up-down direction in terms of its width. The two sides of the diversion plate form a diversion air duct. Accordingly, the diversion air duct guides the hot air towards the food that is insufficiently heated, heating the food evenly.

[0015] Preferably, at least one diversion plate is bent, causing at least one diversion air duct to be bent. The bent diversion air duct can generate a swirling flow while guiding the hot air to flow into the pot, that is, the hot air from the diversion structure not only flows downward but also rotates. This can flow through all areas inside the pot rather than local areas under the guidance of the pot wall, and can evenly apply heat to the food inside the pot.

[0016] Preferably, the bent diversion plate includes a straight section and a bent section that are connected and smoothly transition. The straight section extends forward from the bent section, causing the rear port of the diversion air duct to also deviate to one side. The smooth transition between the straight section and the bent section can reduce the noise when the hot air flows. Causing the rear port of the diversion air duct to also deviate to one side can make the diversion channel accommodate the air flow from the diversion channel, that is, the rear port of the diversion channel faces the direction of the air flow, avoiding the diversion plate blocking the air flow of the diversion channel alone, achieving a better diversion effect and reducing the noise of the air flow.

[0017] Preferably, there are at least two diversion plates, which are arranged side by side from one side to the other side of the cooking cavity, and the width of at least one diversion plate is greater than that of the other diversion plate. Since the hot air device has a fan that generates air flow, the fan not only generates air flow but also interferes with the air flow, especially the hot air diverted to the diversion channel. The rotation of the fan will cause uneven air pressure distribution at the top of the cooking cavity. Therefore, by configuring the widths of the respective diversion plates, the uneven air pressure distribution is balanced, ultimately prompting the hot air to evenly blow towards the food. In particular, the widths of the side-by-side arranged diversion plates gradually increase from one side to the other side of the cooking cavity.

[0018] Preferably, the diversion structure includes a diversion surface, which is located at the front end of the top of the cooking cavity and guides the air flow to flow downward. This makes the hot air blow towards the food farther from the hot air device at the front part of the pot.

[0019] Preferably, the flow guiding structure includes a flow guiding plate and a flow guiding surface. The flow guiding plate is strip-shaped, extending longitudinally from front to back and transversely from top to bottom. The two sides of the flow guiding plate form a flow guiding air duct, and the flow guiding surface is located at the front end of the top of the cooking cavity and guides the air flow to flow downward. This structure combines the flow guiding plate and the flow guiding surface to achieve the effects of guiding the air flow and forcing the air flow to change direction.

[0020] Preferably, the front end of the flow guiding plate intersects with the flow guiding surface, forcing the flow guiding air duct to change direction downward, avoiding the lateral flow of the air flow at the front end of the flow guiding plate, resulting in heat loss and noise.

[0021] Preferably, the top of the cooking cavity has a recessed portion that is recessed upward, and the flow guiding structure is disposed in the recessed portion. Accordingly, the flow guiding structure can be concealed, preventing it from protruding downward and affecting the placement of the pot into or removal from the cooking cavity.

[0022] Preferably, the cooking cavity, the pot, the hot air device, and the flow guiding structure form a fryer unit, and the air fryer includes two fryer units stacked together. Accordingly, an air fryer with a double-layer or multi-layer structure can be formed, which can occupy a smaller countertop area compared to a double-pot air fryer with a left-right side-by-side structure.

[0023] Preferably, the two fryer units stacked together are placed in the same outer shell. This maintains the regularity of the product.

[0024] In the present utility model, the hot air device is arranged at the rear side of the cooking cavity and configured to blow hot air forward. A diversion channel connecting the hot air device and the top of the cooking cavity is provided at the rear side of the pot, and a flow guiding structure for guiding the hot air to the inner cavity of the pot is provided at the top of the cooking cavity. During operation, the hot air generated by the hot air device is guided to at least partially flow through the diversion channel to the top of the cooking cavity and is then guided by the flow guiding device to flow into the inner cavity of the pot. The hot air can reach the food that is far from the hot air device and at least partially blows from top to bottom, enabling the hot air to evenly heat the food and ensuring uniform cooking of the food.

[0025] The flow guiding structure of the present utility model includes a flow guiding plate or / and a flow guiding surface, which enhances the flow guiding effect, reduces heat loss, and reduces noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is an axonometric view of the air fryer of the present utility model;

[0027] Figure 2 is Figure 1 a schematic diagram of a cross-section of the shown air fryer;

[0028] Figure 3 is Figure 1 a schematic diagram of another cross-section of the shown air fryer;

[0029] Figure 4is Figure 1 exploded view of the structure of the air fryer shown;

[0030] Figure 5 is Figure 4 schematic diagram of another perspective of the structure shown;

[0031] Figure 6 is Figure 4 enlarged view of the cooking cavity and the pot of the first fryer unit shown in

[0032] Figure 7 is Figure 5 enlarged view of the cooking cavity and the pot of the first fryer unit shown in

[0033] Figure 8 is Figure 4 enlarged view of the cooking cavity and the pot of the second fryer unit shown in

[0034] Figure 9 is Figure 5 enlarged view of the cooking cavity and the pot of the second fryer unit shown in

[0035] Figure 10 schematic diagram of the diversion structure of the present utility model;

[0036] Figure 11 is Figure 10 bottom elevation orthographic projection schematic diagram of the diversion structure shown;

[0037] Figure 12 is Figure 11 A - A sectional view of

[0038] Figure 13 is Figure 11 B - B sectional view of

[0039] Description of the reference numerals in the figure:

[0040] 10 First fryer unit;

[0041] 20 Second fryer unit;

[0042] 30 Housing;

[0043] 100 Cooking cavity, 101 Front open, 102 Top wall, 103 Bottom wall, 104 Rear wall, 105 Left side wall, 106 Right side wall, 107 Air outlet, 108 Recess;

[0044] 200 Pot, 201 Ventilation hole;

[0045] 300 Hot air device, 301 Electric heating tube, 302 First fan blade, 303 Exhaust duct;

[0046] 400 Diverting channel;

[0047] 500 is a flow guide structure, 501 is a flow guide plate, 502 is a flow guide duct, 503 is a flow guide surface, 504 is a top plate, 505 is a flow guide component, 506 is a fixing plate, 507 is a straight section, and 508 is a curved section. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0049] The terms "including" and "having" and any variations thereof in the specification and claims of the present utility model are intended to cover non-exclusive inclusions. For example, a method or product comprising a series of technical features is not necessarily limited to those technical features clearly listed, but may also include other technical features that are not clearly listed and can be included in the method or product.

[0050] In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. Among them, "upper" and "lower", "left" and "right", "front" and "back" are opposite directions.

[0051] In the description of the present utility model, it is necessary to understand that the technical features defined by the terms "first", "second" and the like with sequential concepts are only for the purpose of clearly describing the defined technical features so that the defined technical features can be clearly distinguished from other technical features, but do not represent such naming in actual implementation, and therefore cannot be understood as a limitation of the present utility model.

[0052] The present invention is described in detail below in conjunction with specific embodiments and drawings.

[0053] Figure 1-5An air fryer with a hot air device at the rear and blowing forward is shown. The air fryer includes two stacked fryer units. The upper one is called the first fryer unit 10, and the lower one is called the second fryer unit 20. The two fryer units have the same structure. They are placed in the same housing 30 and controlled by the same circuit to be able to work independently or simultaneously. In other embodiments, the air fryer may include only one fryer unit or be stacked by more fryer units. When stacking, the two fryer units are preferably fixed together by fasteners.

[0054] As shown in the figure, both the first fryer unit 10 and the second fryer unit 20 include a cooking cavity 100, a pot 200, a hot air device 300, a diversion channel 400, and a guiding structure 500.

[0055] As Figure 2-3 , Figure 6-7 shown, the cooking cavity 100 is bounded by a top wall 102, a bottom wall 103, a rear wall 104, a left side wall 105, and a right side wall 106. There is a front opening 101 at the front of the cooking cavity. An air outlet 107 is provided on the rear wall of the cooking cavity. The top wall, bottom wall, rear wall, and both side walls form an inner container. The stacking of the first fryer unit and the second fryer unit is realized by the stacking and fixing of the inner containers. In other embodiments, the top wall of the lower second fryer unit and the bottom wall of the upper first fryer unit can be combined into one. Figure 8-9 shows the same cooking cavity and pot as Figure 6-7 , except that Figure 6-7 the pot in Figure 8-9 is located outside the cooking cavity, and

[0056] the pot in

[0057] As Figure 4-5As shown, the hot air device 300 is located at the rear side of the cooking cavity and is configured to blow hot air forward. In the illustrated structure, the hot air device 300 includes an electric heating tube 301, a first fan blade 302 and a second fan blade that are coaxially installed and driven by the same motor. The first fan blade and the second fan blade are separated by a partition. The first fan blade is located in front of the second fan blade and is given the main function of blowing air forward, while the second fan blade is given the main function of heat dissipation. The first fan blade and the second fan blade are located inside the housing to concentrate the air flow direction. A discharge air duct 303 is connected to the housing, and the discharge air duct extends to the outside of the housing for discharging air outward. The electric heating tube 301 is spiral and fixed in front of the first fan blade. The air outlet 107 on the rear wall of the cooking cavity, the ventilation hole 201 on the rear wall of the pot, the electric heating tube 301, and the first fan blade 302 are arranged in sequence from front to back and correspond to each other. Therefore, when the first fan blade rotates, it blows air forward, and the air flow is heated by the electric heating tube to become hot air and flows forward and can enter the pot through the ventilation hole on the rear wall of the pot.

[0058] The diversion channel 400 is located at the rear side of the pot and communicates the hot air device 300 and the diversion structure 500 at the top of the cooking cavity 100. In the illustrated structure, there are spaces between the rear wall of the cooking cavity, the rear wall of the pot, and the electric heating tube. Therefore, the diversion channel is distributed on both the front and rear sides of the rear wall of the cooking cavity. In other embodiments, when the space disappears or is blocked, the diversion channel can be distributed only on the front side or the rear side of the rear wall of the cooking cavity.

[0059] The diversion structure 500 is located at the top of the cooking cavity 100 for diverting hot air into the inner cavity of the pot. In the illustrated structure, the diversion structure 500 is disposed on the top wall 102. In Figure 4-5 it, the diversion structure is composed of a top plate 504 and a diversion member 505. The front end of the top plate 504 is bent downward to form a diversion surface 503. The diversion member 505 is fixed to the lower surface of the top plate 504 through its fixing plate 506. Three diversion plates 501 are distributed on the lower side of the fixing plate 506 of the diversion member. In Figure 10-13 it, the diversion structure 500 is only embodied as a diversion member 505. The front end of the fixing plate 506 of the diversion member is bent downward to form a diversion surface 503. Three diversion plates 501 are distributed on the lower side of the fixing plate 506 of the diversion member. Figure 4-5 and Figure 10-13 the diversion structures 500 in

[0060] form a part of the top wall 102 of the cooking cavity.

[0061] According to the above structure, the diversion structure 500 includes both the diversion plate 501 and the diversion surface 503. The front end of the diversion plate 501 intersects with the diversion surface 503, forcing the diversion air duct to change direction downward. The diversion plate and the diversion surface cooperate to guide the air flow into the pot. The two sides of the diversion plate form the diversion air duct 502, and the air flow flowing through the diversion air duct 502 to the diversion surface 503 is guided to flow downward. Due to the existence of the diversion surface, a recess 108 that is concave upward is formed at the rear side of the diversion surface. The recess 108 constitutes the top of the cooking cavity, that is, the diversion structure 500 is disposed in the recess 108.

[0062] In the illustrated structure, the diversion plate 501 is in a long strip shape. The length direction of the diversion plate 501 extends forward and backward, and the width direction of the diversion plate extends upward and downward. Moreover, the diversion plate 501 is substantially perpendicular to the fixing plate 506. In other embodiments, the diversion plate can be inclined to the left or right as needed.

[0063] As shown in the figure, the three diversion plates 501 are bent and cause at least one diversion air duct 502 to bend. The bent diversion air duct can guide the hot air to flow into the pot while generating a swirling flow, that is, the hot air flowing downward from the diversion structure also makes a rotational movement. This can flow through all areas inside the pot rather than local areas under the guidance of the pot wall, and can evenly apply heat to the food inside the pot.

[0064] As Figure 11 shown, the bent diversion plate 501 includes a straight section 507 and a bent section 508 that are connected and smoothly transition. The straight section 507 extends forward from the bent section 508, and the rear end of the bent section deflects to the right. The deflection of the rear end of the bent section is related to the rotation direction of the first fan blade, which is used to guide the air flow, reduce wind resistance and noise. The smooth transition between the straight section and the bent section can reduce the noise when the hot air flows. Causing the rear port of the diversion air duct to also deflect to one side can make the diversion channel accommodate the air flow from the shunt channel, that is, the rear port of the diversion channel faces the direction of the air flow, avoiding the diversion plate blocking the air flow of the shunt channel alone, achieving a better diversion effect and reducing the noise of the air flow.

[0065] Since the hot air device has a fan that generates air flow, the fan not only generates air flow but also interferes with the air flow, especially the hot air shunted to the shunt channel is greatly interfered. The rotation of the fan will cause uneven air pressure distribution at the top of the cooking cavity. Therefore, the three diversion plates are arranged side by side from the left side to the right side of the cooking cavity, and the width of each diversion plate is as Figure 13 shown, gradually increasing from the right side to the left side of the cooking cavity. By configuring the width of each diversion plate, the uneven air pressure distribution is balanced, and finally the hot air is evenly blown onto the food.

[0066] During operation, place the food in the pot and place the pot in the cooking chamber. Start the air fryer. The hot air blows forward. Part of it passes through the ventilation holes and enters the inner cavity of the pot to heat the food near the hot air device at the rear side of the pot. The other part of the hot air is blocked and redirected, flowing along the diversion channel to the top of the cooking chamber, and further flowing downward under the guidance of the diversion structure to blow into the pot, heating the food far from the hot air device at the front side of the pot. Overall, the hot air from the hot air device can evenly blow on the food to heat the food, ensuring that the food is evenly cooked and raw.

Claims

1. The air fryer with hot air device at the rear and blowing at the front is characterized by include: A cooking cavity (100) having a front opening (101) at its front; A pot (200) having an inner cavity with an upper opening at the upper portion of the inner cavity, and the pot can be placed in or taken out of the cooking cavity through the front opening; A hot air device (300), which is located at the rear side of the cooking cavity and is configured to blow hot air forward; A diversion channel (400) is located at the rear side of the pot and communicates with the hot air device and the top of the cooking cavity; The guide structure (500) is located at the top of the cooking cavity and is used to guide hot air to the inner cavity of the pot.

2. The air fryer with a hot air device placed at the rear and blowing at the front according to claim 1, characterized in that: The cooking cavity (100) is bounded by a top wall (102), a bottom wall (103), a rear wall (104) and two side walls, and the flow guide structure (500) is arranged on the top wall (102).

3. The air fryer with a hot air device placed at the rear and blowing at the front according to claim 2, characterized in that: The rear wall of the cooking cavity (100) is provided with an air outlet (107) corresponding to the hot air device.

4. The air fryer with a hot air device placed at the rear and blowing at the front according to claim 3, characterized in that: A plurality of ventilation holes (201) are distributed on the rear wall of the pot (200).

5. The air fryer with a hot air device placed at the rear and blowing at the front according to any one of claims 1 to 4, characterized in that: The guide structure (500) comprises a guide plate (501), which is in the shape of an elongated strip. The guide plate extends forward and backward in the length direction and extends upward and downward in the width direction. Both sides of the guide plate form a guide air duct (502).

6. The air fryer with a hot air device placed at the rear and blowing at the front according to claim 5, characterized in that: At least one guide plate (501) is bent and causes at least one guide air duct (502) to bend.

7. The air fryer with a hot air device placed at the rear and blowing at the front according to claim 6, characterized in that: The curved guide plate comprises a straight section (507) and a curved section (508) which are connected and smoothly transitioned, and the straight section extends forward from the curved section, so that the rear port of the guide air duct is also biased to one side.

8. The air fryer with a hot air device placed at the rear and blowing at the front according to claim 5, characterized in that: The guide plates (501) include at least two and are arranged in parallel from one side to the other side of the cooking cavity, wherein the width of at least one guide plate is greater than the width of another guide plate.

9. The air fryer with hot air device placed at the rear and blowing at the front according to claim 8, characterized in that: The width of each of the arranged guide plates (501) gradually increases from one side of the cooking cavity to the other side.

10. The air fryer with a hot air device placed at the rear and blowing at the front according to any one of claims 1 to 4, characterized in that: The flow guiding structure (500) comprises a flow guiding surface (503), which is located at the top front end of the cooking cavity and guides the airflow to flow downward.

11. The air fryer with a hot air device placed at the rear and blowing at the front according to any one of claims 1 to 4, characterized in that: The guide structure comprises a guide plate (501) and a guide surface (503); the guide plate is in the shape of an elongated strip, the length direction of the guide plate extends forward and backward, the width direction of the guide plate extends upward and downward, the two sides of the guide plate constitute a guide air duct, and the guide surface is located at the top front end of the cooking cavity and guides the airflow to flow downward.

12. The air fryer with a hot air device placed at the rear and blowing at the front according to claim 11, characterized in that: The front end of the guide plate (501) intersects with the guide surface (503), forcing the guide air duct to change direction downward.

13. The air fryer with a hot air device placed at the rear and blowing at the front according to any one of claims 1 to 4, characterized in that: The top of the cooking cavity is provided with a recessed portion (108) that is recessed upward, and the flow guiding structure (500) is arranged in the recessed portion (108).

14. The air fryer with a hot air device placed at the rear and blowing at the front according to any one of claims 1 to 4, characterized in that: The cooking cavity (100), the pot (200), the hot air device (300), the diversion channel (400) and the flow guide structure (500) constitute a fryer unit. The air fryer comprises two fryer units stacked together.

15. The air fryer with a hot air device placed at the rear and blowing at the front according to claim 14, characterized in that: Two stacked fryer units are placed in the same housing.

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