CN215899467U

CN215899467U - Furnace end assembly and air fryer comprising same

Info

Publication number: CN215899467U
Application number: CN202122233085.6U
Authority: CN
Inventors: 吕挺; 陈锡雁; 梁郁庆; 彭以君; 周垚垚
Original assignee: Zhejiang Tianxi Kitchen Appliance Co Ltd
Current assignee: Zhejiang Tianxi Kitchen Appliance Co Ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2022-02-25
Anticipated expiration: 2031-09-15

Abstract

The utility model relates to a furnace end assembly and an air fryer comprising the furnace end assembly. The burner assembly (1) comprises a motor cover (1a), a kick temperature controller (3) and a flame-retardant spacer (2). The flame-retardant spacer (2) is fixed on the motor cover (1 a). The kick temperature controller (3) is installed in the flame-retardant spacing member (2) and is connected with a power supply circuit of the air fryer in series, and is used for cutting off the power supply of the air fryer when the ambient temperature of the kick temperature controller (3) is higher than a preset temperature threshold value. In the burner assembly, the kick temperature controller (3) is arranged in the flame-retardant spacer (2), so that the creepage distance between the kick temperature controller (3) and other electrical elements is remarkably increased, and the installation cost of the kick temperature controller is reduced.

Description

Furnace end assembly and air fryer comprising same

Technical Field

The utility model relates to the field of kitchen appliances, in particular to a furnace end assembly and an air fryer comprising the same.

Background

An air fryer is cooking equipment for frying food by utilizing hot air circulation and grease of the food, and the product is favored by consumers due to the green and healthy cooking concept.

Air fryers typically include a burner assembly and a fry vat positioned below the burner assembly. The furnace end assembly comprises a motor cover, a heat insulation cover, a driving motor arranged above the motor cover, and a hot air fan blade and a heating pipe arranged below the heat insulation cover. A motor shaft of the driving motor is fixedly connected with the hot air fan blade, so that the hot air fan blade can rotate under the driving of the driving motor. The air near the hot air fan blade is driven by the hot air fan blade to flow through the heating pipe for heating and then flows downwards to the food to be cooked in the frying barrel so as to heat the food to be cooked.

In the working process of the air fryer, the heating pipe emits heat, so that the temperature of the furnace end component is increased. Under normal conditions, the control system of the air fryer can control the heating tube to operate within a normal working temperature range. However, when the control system of the air fryer fails, the heat pipe may increase temperature uncontrollably, causing damage to the burner assembly. In severe cases, fires may also be triggered, causing personal and property damage to the user.

In order to prevent the heating pipe from having too high temperature when the control system fails, air fryer with kick temperature controller is available on the market. In such air fryer, a kick thermostat is provided in the burner assembly. When the control system of the air fryer breaks down to cause the temperature of the heating pipe to be overhigh, the kick temperature controller senses the overhigh temperature around and cuts off the power supply of the heating pipe, thereby avoiding the safety risk caused by the overhigh temperature of the air fryer.

However, in such air fryer having a kick thermostat, the kick thermostat is typically disposed on a motor housing in the burner assembly. Since an electrical element such as a motor is also included in the burner assembly, the creepage distance between the trip thermostat and other electrical elements needs to meet the safety standard (12.7 mm). Because the volume of the burner assembly is small, the density of the electric elements is large, in order to meet the requirement of creepage distance, the electric elements in the burner assembly need to be rearranged so as to install the snap-action temperature controller, and therefore the installation cost of the snap-action temperature controller is increased.

Therefore, it is necessary to provide a solution that can simplify the installation of the trip thermostat and reduce the installation cost of the trip thermostat.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a burner assembly and an air fryer including the burner assembly, so as to solve the above technical problems.

According to an aspect of the present invention, there is provided a burner assembly for an air fryer, the burner assembly comprising a motor housing, a trip thermostat and a flame retardant spacer, the flame retardant spacer being fixed to the motor housing, the trip thermostat being mounted in the flame retardant spacer and being in series with a power supply circuit of the air fryer for cutting off the power supply of the air fryer when the ambient temperature of the trip thermostat is above a preset temperature threshold.

According to a preferred embodiment of the utility model, said fire-retardant spacer comprises a side wall defining a housing space therein, said trip thermostat being mounted in said housing space, said temperature threshold ranging between 200 ℃ and 300 ℃.

According to a preferred embodiment of the present invention, the fire-retardant spacer further comprises a fire-retardant cover for closing the accommodating space.

According to a preferred embodiment of the present invention, the fire-retardant spacer is provided at an upper end portion of a sidewall thereof with a rotation shaft hole, and the fire-retardant cover is provided thereon with a rotation shaft which is fitted into the rotation shaft hole such that the fire-retardant cover can be rotated between an open position and a closed position.

According to a preferred embodiment of the present invention, a fire-retardant cover button is provided on a side wall of the fire-retardant partition, and a button hole is provided on the fire-retardant cover, and the fire-retardant cover button is inserted into the button hole when the fire-retardant cover is in the closed position, so that the fire-retardant cover is maintained in the closed position.

According to a preferred embodiment of the present invention, the fire-retardant spacer is provided with a fire-retardant spacer outlet, and a conducting wire connected to the trip temperature controller enters the fire-retardant spacer through the fire-retardant spacer outlet.

According to a preferred embodiment of the present invention, the side of the flame retardant spacer is provided with a screw fixing piece for fixedly connecting with the motor cover by a screw.

According to a preferred embodiment of the present invention, a fire-retardant spacer mounting groove is formed on the motor cover, and the bottom of the fire-retardant spacer is inserted into the fire-retardant spacer mounting groove.

According to the preferred embodiment of the utility model, the furnace end assembly further comprises a driving motor, and the driving motor is mounted on the motor cover and used for driving the hot air fan blades to rotate.

According to another aspect of the present invention, there is provided an air fryer comprising the burner assembly described above.

According to the technical scheme, the snap-through temperature controller is arranged in the flame-retardant spacer in the burner assembly, so that the creepage distance between the snap-through temperature controller and other electrical elements is remarkably increased, and the installation cost of the snap-through temperature controller is reduced. In addition, the flame-retardant spacer can also play a role in water prevention, so that the sudden-jump temperature controller is prevented from contacting water, and the service life of the sudden-jump temperature controller is prolonged.

Further, in this novel furnace end subassembly of use, fire-retardant spacing member still includes the fire-retardant lid of sealing fire-retardant spacing member to strengthened the seal of fire-retardant spacing member, improved the water-proof effects of fire-retardant spacing member and improved the creepage distance of kick temperature controller.

Drawings

The accompanying drawings are included to provide a further understanding of the claimed subject matter and are incorporated in and constitute a part of this specification, illustrate embodiments of the subject matter and together with the description serve to explain the principles of the subject matter, and not limit the subject matter.

Fig. 1 is an exploded view of a burner assembly according to an embodiment of the present invention;

fig. 2 is a perspective view of a burner assembly according to an embodiment of the present invention;

fig. 3 is a perspective view of a flame retardant spacer in a burner assembly according to an embodiment of the utility model;

fig. 4 is a perspective view of a fire retardant cover of a fire retardant partition in a burner assembly according to an embodiment of the present invention;

fig. 5 is a perspective view of a flame retardant spacer in a burner assembly according to an embodiment of the utility model.

Description of reference numerals:

1-a burner assembly, 1 a-a motor cover;

2-flame-retardant spacing part, 2 a-screw fixing piece, 2 b-rotating shaft hole, 2 c-flame-retardant spacing part outlet and 2 d-flame-retardant cover buckle;

3-kick thermostat;

4-flame-retardant cover, 4 a-flame-retardant cover outlet, 4 b-rotating shaft and 4 c-buckling hole.

Detailed Description

Various exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the utility model, its application, or uses. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art. It should be noted that the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.

Fig. 1 is an exploded view of a burner assembly according to an embodiment of the present invention. Fig. 2 is a perspective view of a burner assembly according to an embodiment of the present invention. Fig. 1 and 2 show a burner assembly 1 for installation in an air fryer.

As shown in fig. 1 and 2, the burner assembly 1 includes a motor cover 1a, a trip temperature controller 3, and a flame-retardant spacer 2. The flame retardant spacer 2 is fixed to the motor cover 1 a. Specifically, a flame-retardant spacer mounting groove is formed on the motor cover 1a, and the bottom of the flame-retardant spacer 2 is embedded into the flame-retardant spacer mounting groove. A kick thermostat 3 is mounted in the fire resistant partition 2 and is connected in series with the power supply circuit of the air fryer. When the ambient temperature of the kick temperature controller 3 is higher than the preset temperature threshold, the kick temperature controller 3 can cut off the power supply of the air fryer. The temperature threshold can, for example, range between 200 ℃ and 300 ℃.

The temperature within the fry vat is typically controlled to below 200 c during normal operation of the air fryer. In order to control the temperature in the frying barrel, a temperature sensor is arranged near a heating pipe of the air fryer. The temperature sensor is connected with the control circuit of the air fryer. The control circuit obtains the real-time temperature near the heating tube through the temperature sensor and controls the temperature in the frying barrel by controlling the work of the heating tube.

When the temperature sensor or the control circuit fails, the control circuit no longer controls the operation of the heating tube, which may cause the temperature inside the air fryer to continuously rise above the normal operating temperature. Excessive temperatures within the air fryer not only can damage the internal components of the air fryer, but can also burn a user and even cause a fire, causing personal and property damage to the user. The kick temperature controller 3 on the burner assembly 1 of the embodiment can cut off the power supply of the air fryer in time when the ambient temperature is too high, thereby avoiding the temperature in the air fryer to continuously rise and effectively preventing the dangerous consequences from happening.

In this embodiment, the fire-retardant spacer 2 includes a side wall defining a receiving space therein, and the trip thermostat 3 is installed in the receiving space. The fire-retardant partition 2 is made of a fire-retardant material. Because the lateral wall of the fire-retardant spacer 2 surrounds the kick temperature controller 3, when the furnace end is on fire, the fire-retardant spacer 2 can effectively protect the kick temperature controller 3, thereby ensuring that the kick temperature controller 3 can still cut off the power supply of the air fryer under extreme conditions, and avoiding users from suffering further personal and property losses. In addition, the flame-retardant spacer 2 can also prevent moisture permeating into the burner assembly 1 from contacting the trip temperature controller 3, and avoid potential safety hazards caused by damage of the trip temperature controller 3 due to damp.

Because the kick temperature controller 3 is installed in the flame-retardant spacer 2, the flame-retardant spacer 2 can effectively increase the creepage distance between the kick temperature controller 3 and other electrical elements, so that designers of the air fryer can freely set the installation position of the kick temperature controller 3 without redesigning the layout of the electrical elements in the air fryer in order to meet the creepage distance requirement. In fact, the creepage distance can be made to reach 12.7mm, which is required by safety regulations, by setting the width and height of the fire-retardant partition 2.

In this embodiment the fire-retardant partition 2 further comprises a fire-retardant cover 4 for closing the receiving space of the fire-retardant partition 2. Fig. 3 is a perspective view of the fire-retardant spacer 2 according to the present embodiment without the fire-retardant cover 4 installed. Fig. 4 is a perspective view of the fire-retardant cover 4 of the fire-retardant spacer 2 according to the present embodiment. Fig. 5 is a schematic view of the installation of the fire retardant cover 4. A flame-retardant partition 2 according to an embodiment of the present invention will be described in detail below with reference to fig. 3 to 5.

As shown in fig. 3 and 4, the upper end of the side wall of the flame retardant spacer 2 is provided with a rotation shaft hole 2 b. The flame retardant cover 4 is provided with a rotation shaft 4 b. The rotation shaft holes 2b correspond to the positions of the rotation shafts 4b, and are equal in number. In the present embodiment, two rotation shaft holes 2b are provided on the flame-retardant spacer 2, and correspondingly two rotation shafts 4b are provided on the flame-retardant cover 4. When the fire-retardant cover 4 is mounted, the rotation shaft 4b on the fire-retardant cover 4 is aligned with the rotation shaft hole 2b of the fire-retardant spacer 2 (as shown in fig. 5), and then the rotation shaft 4b is fitted into the rotation shaft hole 2b so that the fire-retardant cover 4 can be rotated between the open position and the closed position. In the open position, the upper end of the fire retardant spacer 2 has an opening for mounting or removing the kick thermostat 3. In the closed position, the fire retardant cover 4 closes the upper end opening of the fire retardant spacer 2, thereby avoiding that external water or dust affects the operation of the kick thermostat 3 in the fire retardant spacer 2.

In this embodiment, a fire-retardant cover clip 2d is provided on the side wall of the fire-retardant spacer 2. The fire-retardant lid 4 is provided with a buckling hole 4c, when the fire-retardant lid 4 is in the closed position, the fire-retardant lid buckle 2d is embedded into the buckling hole 4c, so that the fire-retardant lid 4 is kept in the closed position and can not rotate freely. When it is necessary to open the fire-retardant cover 4, an external force sufficient to disengage the fire-retardant cover fastener 2d from the fastener position hole 4c needs to be applied to the fire-retardant cover 4, thereby ensuring that the fire-retardant cover 4 is not accidentally opened by the shaking of the air fryer (e.g., when the user moves the air fryer).

In this embodiment, the flame-retardant spacer 2 is provided with a flame-retardant spacer outlet 2 c. Correspondingly, the fire-retardant cover 4 is also provided with a fire-retardant cover outlet 4 a. The lead wire connected with the kick temperature controller 3 can enter the flame-retardant spacing member 2 through the flame-retardant spacing member outlet 2 c. Because the fire-retardant cover outlet 4a corresponding to the fire-retardant spacer outlet 2c is arranged on the fire-retardant cover 4, the opening and closing of the fire-retardant cover 4 can not be influenced by the conducting wire connected with the kick temperature controller 3.

In this embodiment, the side of the flame-retardant spacer 2 is provided with a screw fixing piece 2a for fixing connection with the motor cover 1a by a screw. The motor cover 1a can be correspondingly provided with fixing posts. When the fire-retardant spacer 2 is mounted, a screw can be passed through the screw fixing piece 2a and into a fixing post provided on the motor cover 1a, so that the fire-retardant spacer 2 is stably fixed on the motor cover 1 a.

The flame retardant spacer 2 and the kick temperature controller 3 installed in the burner assembly 1 according to the embodiment of the present invention are described above. The utility model also relates to an air fryer comprising the burner assembly 1 described above and a fry vat assembly arranged below the burner assembly 1. The furnace end assembly 1 further comprises a driving motor arranged above the motor cover 1a, and a heat insulation cover and a heating pipe arranged below the motor cover 1 a. The driving motor is connected with the hot air fan and drives the hot air fan to rotate. After the air around the heating tube is heated, the air flows downwards into the frying barrel of the air frying pan under the driving of the hot air fan blade, so that the food in the frying barrel is cooked.

So far, some specific embodiments of the present invention have been described in detail by way of examples, but it should be understood by those skilled in the art that the above examples are only for illustrative purposes and are not intended to limit the scope of the present invention. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the utility model.

Claims

1. A burner assembly for an air fryer, characterized in that the burner assembly (1) comprises a motor cover (1a), a trip temperature controller (3) and a flame-retardant spacer (2), the flame-retardant spacer (2) is fixed on the motor cover (1a), the trip temperature controller (3) is installed in the flame-retardant spacer (2) and is connected in series with a power supply circuit of the air fryer for cutting off the power supply of the air fryer when the ambient temperature of the trip temperature controller (3) is higher than a preset temperature threshold.

2. Burner assembly according to claim 1, characterized in that said fire-retardant partition (2) comprises a side wall defining a housing space inside, said trip thermostat (3) being mounted in said housing space, said temperature threshold ranging between 200 ℃ and 300 ℃.

3. Burner assembly according to claim 2, wherein the flame retardant partition (2) further comprises a flame retardant cover (4) for closing the receiving space.

4. The burner assembly of claim 3, wherein the flame retardant spacer (2) is provided with a rotation shaft hole (2b) at an upper end of a sidewall thereof, and the flame retardant cover (4) is provided with a rotation shaft (4b), the rotation shaft (4b) being inserted into the rotation shaft hole (2b) such that the flame retardant cover (4) can rotate between the open position and the closed position.

5. The burner assembly of claim 4, wherein the flame retardant partition (2) is provided with a flame retardant cover button (2d) on a side wall thereof, and the flame retardant cover (4) is provided with a button hole (4c), and when the flame retardant cover (4) is in the closed position, the flame retardant cover button (2d) is inserted into the button hole (4c) so that the flame retardant cover (4) is maintained in the closed position.

6. The burner assembly of claim 1, wherein the flame-retardant spacer (2) is provided with a flame-retardant spacer outlet (2c), and the wire connected to the kick thermostat (3) enters the flame-retardant spacer (2) through the flame-retardant spacer outlet (2 c).

7. The burner assembly of claim 1, wherein the flame retardant spacer (2) is provided at a side thereof with a screw fixing piece (2a) for fixing connection with the motor cover (1a) by means of a screw.

8. The burner assembly of claim 1, wherein the motor cover (1a) is provided with a flame retardant spacer mounting groove, and the bottom of the flame retardant spacer (2) is inserted into the flame retardant spacer mounting groove.

9. The burner assembly of claim 1, wherein the burner assembly (1) further comprises a driving motor mounted on the motor housing (1a) for driving the hot wind blade to rotate.

10. An air fryer comprising a burner assembly according to any one of the preceding claims.