CN112856498A

CN112856498A - Air duct assembly of microwave cooking equipment

Info

Publication number: CN112856498A
Application number: CN201911189602.5A
Authority: CN
Inventors: 李云龙; 孙炎军; 唐相伟
Original assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2021-05-28

Abstract

The invention discloses an air duct assembly of microwave cooking equipment, which comprises: a heat shield mounted behind the microwave cooking apparatus; a hot air assembly for providing hot air into the microwave cooking device, the hot air assembly being mounted on the heat shield; the outer rear plate is arranged behind the heat shield, a heat dissipation air channel is defined between the outer rear plate and the heat shield, and the heat dissipation air channel is communicated with outside air and the hot air assembly; and the heat dissipation fan is arranged in the heat dissipation air duct to dissipate heat of the hot air component. The air duct assembly of the microwave cooking equipment disclosed by the embodiment of the invention has the advantages of strong reliability, good heat dissipation effect, low cost and the like.

Description

Air duct assembly of microwave cooking equipment

Technical Field

The invention relates to the technical field of electric appliance manufacturing, in particular to an air duct assembly of microwave cooking equipment.

Background

According to microwave cooking equipment in the related art, a hot air assembly is driven by a hot air motor to blow hot air to a cooking cavity, and the hot air assembly can generate a large amount of heat during working, so that the working reliability and the service life of the hot air motor are influenced.

Therefore, part of the microwave cooking equipment is additionally connected with the heat dissipation fan blades on the hot air motor to dissipate heat of the hot air motor, but the additionally connected heat dissipation fan blades can increase the load of the hot air motor, so that the rotating speed of the motor is reduced, and the efficiency is reduced.

In addition, because the space for the additional connected heat dissipation fan blade to rotate is reserved, the size of the microwave cooking equipment in the front-back direction is increased, a heat insulation air cover with higher cost needs to be arranged between the hot air assembly and the motor, the area of the heat insulation air cover can be increased by arranging the additional heat dissipation fan blade, and the cost of the whole machine is increased.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the air duct assembly of the microwave cooking equipment has the advantages of being strong in reliability, good in heat dissipation effect, low in cost and the like.

In order to achieve the above object, according to an embodiment of the present invention, there is provided a duct assembly of a microwave cooking apparatus, including: a heat shield mounted behind the microwave cooking apparatus; a hot air assembly for providing hot air into the microwave cooking device, the hot air assembly being mounted on the heat shield; the outer rear plate is arranged behind the heat shield, a heat dissipation air channel is defined between the outer rear plate and the heat shield, and the heat dissipation air channel is communicated with outside air and the hot air assembly; and the heat dissipation fan is arranged in the heat dissipation air duct to dissipate heat of the hot air component.

The air duct assembly of the microwave cooking equipment disclosed by the embodiment of the invention has the advantages of strong reliability, good heat dissipation effect, low cost and the like.

In addition, the air duct assembly of the microwave cooking device according to the above embodiment of the present invention may further have the following additional technical features:

according to one embodiment of the invention, the middle part of the outer back plate is provided with a heat dissipation opening, and the edge of the outer back plate is provided with an exhaust opening.

According to one embodiment of the present invention, the exhaust port is plural and is provided at intervals along the edge of the outer rear plate.

According to an embodiment of the present invention, the outer rear plate has a boss protruding rearward, a rear surface of the boss is provided with a main heat dissipation opening and a sub heat dissipation opening, the main heat dissipation opening is opposite to the hot air assembly in the front-rear direction, the sub heat dissipation opening and the main heat dissipation opening are spaced apart from each other on the rear surface of the boss, and a peripheral surface of the boss is provided with a peripheral surface heat dissipation opening.

According to one embodiment of the invention, an electric appliance cavity separated from the cooking cavity is formed in the microwave cooking device, and the heat dissipation air duct is communicated with the electric appliance cavity.

According to one embodiment of the invention, the hot air assembly comprises: the heating device is arranged in front of the heat shield; the hot air fan blade is arranged in front of the heat shield; and the hot air motor is arranged in the heat dissipation air duct.

According to one embodiment of the invention, the hot air motor is a shaded pole motor.

According to one embodiment of the invention, the heating device is a heating pipe and is arranged around the hot air fan blade.

According to an embodiment of the present invention, the hot wind motor includes a motor shaft and a motor body, the motor shaft being located at a center of the motor body in a radial direction of the motor shaft.

According to an embodiment of the present invention, a length of the motor body in a radial direction of the motor shaft is 1.5 times or more as long as a length of the motor body in an axial direction of the motor shaft.

According to an embodiment of the present invention, the hot wind motor is mounted on the heat shield, and the heat dissipation fan is mounted on the outer rear plate.

According to one embodiment of the invention, the hot air assembly and the heat dissipation fan are arranged at intervals in the horizontal direction.

According to one embodiment of the invention, the heat shield is a stainless steel piece and the outer back plate is a galvanized plate piece.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a sectional view of a duct assembly of a microwave cooking apparatus according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a duct assembly of a microwave cooking apparatus according to an embodiment of the present invention.

Fig. 3 is a schematic structural view of a microwave cooking apparatus according to an embodiment of the present invention.

Fig. 4 is a schematic structural view of a microwave cooking apparatus according to an embodiment of the present invention.

Fig. 5 is a schematic structural view of a microwave cooking apparatus according to an embodiment of the present invention.

Fig. 6 is a schematic structural view of a hot air motor of a duct assembly of a microwave cooking apparatus according to an embodiment of the present invention.

Reference numerals: the air duct assembly 1 of the microwave cooking device, the heat shield 10, the hot air assembly 20, the heating device 21, the hot air fan blade 22, the hot air motor 23, the motor shaft 231, the motor main body 232, the outer rear plate 30, the boss 301, the main heat dissipation port 31, the auxiliary heat dissipation port 32, the peripheral heat dissipation port 33, the exhaust port 34, the heat dissipation fan 40, the partition plate 50, the hot air inlet 51, the microwave cooking device 2, the air outlet 201 and the electric appliance cavity 202.

Detailed Description

The present application is based on the discovery and recognition by the inventors of the following facts and problems:

microwave cooking equipment among the correlation technique is equipped with and is used for carrying out radiating wind channel to the inside electrical part of cooking equipment, but this wind channel and hot-blast subassembly do not communicate, can not dispel the heat to hot-blast subassembly's motor, influence the reliability and the life of hot-blast motor work.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

An air duct assembly 1 of a microwave cooking apparatus according to an embodiment of the present invention is described below with reference to the accompanying drawings.

As shown in fig. 1 to 6, the air duct assembly 1 of the microwave cooking apparatus according to the embodiment of the present invention includes a heat shield 10, a hot air assembly 20, an outer rear plate 30, and a heat dissipation fan 40.

The heat shield 10 is installed behind the microwave cooking apparatus 2 (front-back direction is shown by an arrow in the figure). The hot air assembly 20 is used for supplying hot air into the microwave cooking apparatus 2, and the hot air assembly 20 is mounted on the heat shield 10. The outer back plate 30 is arranged behind the heat shield 10, and a heat dissipation air duct is defined between the outer back plate 30 and the heat shield 10 and is communicated with the outside air and the hot air assembly 20. The heat dissipation fan 40 is disposed in the heat dissipation air duct to dissipate heat of the hot air assembly 20.

According to the air duct assembly 1 of the microwave cooking device, the heat dissipation air duct is arranged, and the heat dissipation fan 40 is used for dissipating heat of the hot air assembly 20, so that heat accumulation generated when the hot air assembly 20 works can be avoided, overheating of the hot air assembly 20 is avoided, reliability of the hot air assembly 20 is guaranteed, and service life of the hot air assembly 20 is prolonged.

In addition, the additional heat dissipation air duct and the heat dissipation fan 40 are used for dissipating heat of the hot air assembly 20, and compared with the hot air assembly in the related art, the hot air assembly 20 does not need to be connected with additional heat dissipation fan blades, so that the load of the hot air assembly 20 can be reduced, and the working efficiency of the hot air assembly 20 is ensured.

Further, by communicating the heat dissipation air duct with the hot air assembly 20, compared with a technical scheme in which the air duct only dissipates heat to a cavity of an electrical appliance in the related art, the heat dissipation air duct can be used for dissipating heat to the hot air assembly 20 without arranging an additional heat dissipation structure, and compared with a technical scheme in which a heat dissipation fan blade is additionally connected to the hot air assembly 20 in the related art, because the heat dissipation fan blade additionally connected to the technical scheme in the related art directly sucks air from the outside, the wind direction is always parallel to the axial direction of the heat dissipation fan blade, the air duct assembly 1 according to the embodiment of the present invention dissipates heat to the hot air assembly 20 through the heat dissipation air duct and the heat dissipation fan 40, and the wind direction and the wind volume of the intake air of the heat dissipation air duct can be adjusted through the arrangement of the holes on the outer rear plate 30.

In addition, dispel the heat through setting up extra cooling fan 40 to hot-blast subassembly 20, compare among the relevant art the technical scheme who additionally connects the heat dissipation fan blade on the hot-blast subassembly 20, need not to reserve the space of enough rotation for the heat dissipation fan blade of additionally connecting in the front and back direction, can be convenient for control the ascending size in the front and back direction of wind channel subassembly 1 of microwave cooking equipment, can be convenient for reduce the area of heat exchanger 10 moreover to reduce the cost of heat exchanger 10.

Therefore, the air duct assembly 1 of the microwave cooking device according to the embodiment of the invention has the advantages of strong reliability, good heat dissipation effect, low cost and the like.

In some embodiments of the present invention, as shown in fig. 1 to 6, the air duct assembly 1 of the microwave cooking apparatus according to the embodiment of the present invention includes a heat shield 10, a hot air assembly 20, an outer rear plate 30, and a heat dissipation fan 40.

Specifically, as shown in fig. 2 to 5, the middle of the outer rear plate 30 is provided with a heat dissipation opening, and the edge of the outer rear plate 30 is provided with an air exhaust opening 34. In this way, the heat dissipation of the hot air unit 20 can be performed by the heat dissipation port and the air exhaust port 34, respectively, and the heat dissipation effect of the hot air unit 20 can be improved.

More specifically, as shown in fig. 2 to 5, the exhaust port 34 is plural and is provided at intervals along the edge of the outer rear plate 30. This enables heat dissipation by the plurality of exhaust ports 34, thereby further improving the heat dissipation effect.

Further, as shown in fig. 2 to 5, the outer rear plate 30 has a boss 301 protruding rearward, a rear surface of the boss 301 is provided with a main heat dissipation port 31 and a sub heat dissipation port 32, the main heat dissipation port 31 is opposite to the hot air unit 20 in the front-rear direction, the sub heat dissipation port 32 and the main heat dissipation port 31 are spaced apart from each other on the rear surface of the boss 301, and a peripheral surface of the boss 301 is provided with a peripheral surface heat dissipation port 33. Therefore, the through holes at different positions can be used for radiating the hot air assembly 20, and the radiating effect of the hot air assembly 20 is further improved.

Advantageously, as shown in fig. 3 and 4, an appliance cavity 202 spaced apart from the cooking cavity is further formed in the microwave cooking device 2, and the heat dissipation duct is communicated with the appliance cavity 202. In this way, the heat dissipation air duct can be used to dissipate heat of the electric appliance cavity 202 at the same time, thereby improving the reliability of the microwave cooking device 2.

Specifically, as shown in fig. 4 and 5, the microwave cooking apparatus 2 is provided with air outlets 201 on the top wall, the bottom wall, and both side walls. This can further improve the heat radiation effect of the microwave cooking apparatus 2.

More advantageously, as shown in fig. 2, the hot air unit 20 and the heat dissipation fan 40 are spaced apart in the horizontal direction. This can facilitate control of the dimension of the air duct assembly 1 of the microwave cooking apparatus in the front-rear direction.

Alternatively, the heat shield 10 is a stainless steel piece and the outer back plate 30 is a galvanized plate piece. This may facilitate controlling the cost of the air duct assembly 1 of the microwave cooking apparatus.

Fig. 1 and 6 show a duct assembly 1 of a microwave cooking apparatus according to one specific example of the present invention. As shown in fig. 1, the hot air assembly 20 includes a heating device 21, a hot air blade 22, and a hot air motor 23. The heating device 21 is provided in front of the heat shield 10. The hot air fan 22 is arranged in front of the heat shield 10. The hot air motor 23 is arranged in the heat dissipation air duct. Specifically, the air duct assembly 1 of the microwave cooking device further includes a partition plate 50, the partition plate 50 is disposed in front of the heating device 21 and the hot air blade 22, a hot air inlet 51 is disposed on the partition plate 50, and central axes of the hot air inlet 51, the hot air motor 23, the hot air blade 22 and the main heat dissipation port 31 are overlapped. Therefore, the hot air fan blade 22 can be driven by the hot air motor 23, heat generated by the heating device 21 is blown to a cooking cavity of the microwave cooking equipment 2, the heating device 21 and the hot air motor 23 are separated by the heat insulation cover 10, heat transferred to the hot air motor 23 by the heating device 21 can be reduced, the heat dissipation air channel can dissipate heat of the hot air motor 23, and reliability of the hot air motor 23 is improved.

Alternatively, as shown in fig. 6, the hot air motor 23 is a shaded pole motor. Compared with the technical scheme of adopting a direct current motor, the cost of the hot air motor 23 can be reduced, a direct current power supply does not need to be independently arranged for supplying power, and the cost of the microwave cooking equipment 2 is further reduced.

Specifically, as shown in fig. 1, the heating device 21 is a heating pipe and is disposed around the hot wind blade 22. This can reduce the cost of the heating apparatus 21 while ensuring the heating effect of the heating apparatus 21.

Advantageously, as shown in fig. 1 and 6, the hot wind motor 23 includes a motor shaft 231 and a motor body 232, and the motor shaft 231 is located at the center of the motor body 232 in the radial direction of the motor shaft 231. Therefore, the hot air fan blade 22 can be arranged in the middle, the air supply effect of the hot air fan blade 22 can be guaranteed, the flexibility of the installation position of the hot air motor 23 can be improved, and the installation of the hot air motor 23 is facilitated.

More advantageously, as shown in fig. 1 and 6, the length of the motor body 232 in the radial direction of the motor shaft 231 is equal to or greater than 1.5 times the length of the motor body 232 in the axial direction of the motor shaft 231. This makes it possible to make the hot air motor 23 more flat so as to reduce the thickness of the motor main body 232, thereby facilitating control of the size of the microwave cooking apparatus 2.

More specifically, as shown in fig. 1, the hot wind motor 23 is mounted on the heat shield 10, and the radiator fan 40 is mounted on the outer rear plate 30. This facilitates the installation of the hot air motor 23 and the cooling fan 40, and further facilitates the control of the cost of the air duct assembly 1 of the microwave cooking apparatus.

Other constructions and operations of the air duct assembly 1 of the microwave cooking apparatus according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An air duct assembly for microwave cooking equipment, characterized in that, comprising:

a heat shield installed behind the microwave cooking device;

a hot air assembly for providing hot air into the microwave cooking device, the hot air assembly being mounted on the heat shield;

an outer rear panel, the outer rear panel is arranged behind the heat shield, a cooling air duct is defined between the outer rear panel and the heat shield, and the cooling air duct communicates with the outside air and the hot air assembly ;

A cooling fan is arranged in the cooling air duct to dissipate heat from the hot air assembly.

2 . The air duct assembly of a microwave cooking device according to claim 1 , wherein a heat dissipation port is provided in the middle of the outer rear panel, and an exhaust port is provided at the edge of the outer rear panel. 3 .

3 . The air duct assembly of a microwave cooking device according to claim 2 , wherein the exhaust ports are plural and are arranged at intervals along the edge of the outer rear panel. 4 .

4 . The air duct assembly of a microwave cooking device according to claim 2 , wherein the outer rear plate has a boss that protrudes backward, and the rear surface of the boss is provided with a main heat dissipation port and an auxiliary heat dissipation port. 5 . The main heat dissipation port is opposite to the hot air assembly in the front-rear direction, the auxiliary heat dissipation port and the main heat dissipation port are arranged at intervals on the rear surface of the boss, and the peripheral surface of the boss is provided with Peripheral cooling vents.

5 . The air duct assembly of a microwave cooking device according to claim 2 , wherein an electric appliance cavity spaced apart from the cooking cavity is further formed in the microwave cooking device, and the heat dissipation air duct is connected to the electric appliance. 6 . cavity communication.

6. The air duct assembly of a microwave cooking device according to claim 1, wherein the hot air assembly comprises:

a heating device, the heating device is arranged in front of the heat shield;

hot air blades, the hot air blades are arranged in front of the heat shield;

A hot air motor is provided in the heat dissipation air duct.

7 . The air duct assembly of a microwave cooking device according to claim 6 , wherein the hot air motor is a shaded-pole motor. 8 .

8 . The air duct assembly for microwave cooking equipment according to claim 6 , wherein the heating device is a heating pipe and is arranged around the hot air fan blade. 9 .

9 . The air duct assembly of a microwave cooking device according to claim 6 , wherein the hot air motor comprises a motor shaft and a motor body, and the motor shaft is located at a radial direction of the motor body on the radial direction of the motor body. 10 . at the center.

10 . The air duct assembly of a microwave cooking device according to claim 9 , wherein the length of the motor body in the radial direction of the motor shaft is greater than or equal to the length of the motor body along the axial direction of the motor shaft. 11 . 1.5 times.

11 . The air duct assembly of a microwave cooking device according to claim 7 , wherein the hot air motor is mounted on the heat shield, and the cooling fan is mounted on the outer rear panel. 12 .

12 . The air duct assembly of a microwave cooking device according to claim 1 , wherein the hot air assembly and the cooling fan are arranged at intervals in a horizontal direction. 13 .

13 . The air duct assembly for microwave cooking equipment according to claim 2 , wherein the heat shield is a stainless steel part, and the outer rear plate is a galvanized sheet part. 14 .