CN117135786A - Air duct piece and household appliance with same - Google Patents

Abstract

The invention discloses an air duct piece and a household appliance with the same, wherein the air duct piece is provided with a plurality of air inlet channels and air outlet channels which are communicated, the air outlet channels comprise a first air outlet channel and a second air outlet channel which are arranged back to back, the air outlet of the first air outlet channel is suitable for blowing to a first group to be cooled, the air outlet of the second air outlet channel is suitable for blowing to a second group to be cooled, and the first group to be cooled and the second group to be cooled are respectively positioned at different positions. According to the air duct piece, the household appliance can meet the heat radiation requirement by adopting only a single heat radiation fan.

Description

Air duct piece and household appliance with same

Technical Field

The invention relates to the technical field of household appliances, in particular to an air duct piece and a household appliance with the same.

Background

In the related art, a plurality of heat dissipation parts to be cooled in a microwave oven are required to dissipate heat, and in order to ensure the heat dissipation requirement, two or more heat dissipation fans are generally arranged to cool the corresponding heat dissipation parts. However, this arrangement has the following problems: 1. the heat dissipation fans occupy larger space, so that the volume of the product is overlarge; 2. the wind energy utilization rate is low, the energy loss is large, and more heat dissipation fans are needed to be used for compensation; 3. the cost is high.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an air duct member that facilitates enabling a household appliance, such as a microwave oven, to meet heat dissipation requirements using only a single heat dissipation fan.

The invention also provides a household appliance with the air duct piece.

According to the air duct piece provided by the embodiment of the first aspect of the invention, the air duct piece is provided with the air inlet channels and the air outlet channels which are communicated, the air outlet channels are a plurality of and comprise the first air outlet channels and the second air outlet channels which are arranged in a back-to-back mode, the air outlet of the first air outlet channel is suitable for blowing to the first group to be cooled, the air outlet of the second air outlet channel is suitable for blowing to the second group to be cooled, and the first group to be cooled and the second group to be cooled are respectively located at different positions.

According to the air duct piece provided by the embodiment of the invention, the air duct piece is provided with the plurality of air outlet air ducts, and the plurality of air outlet air ducts comprise the first air outlet air duct and the second air outlet air duct which are arranged back to each other so as to disperse radiating airflow and better match the positions of the first group to be radiated and the second group to be radiated, thereby being beneficial to reducing the times of changing the flow direction of the airflow, facilitating the first air outlet air duct and the second air outlet air duct to radiate different groups to be radiated respectively, facilitating the household appliances such as microwave ovens to meet the radiating requirement by adopting only a single radiating fan, effectively improving the wind energy utilization rate of the radiating fan, reducing the quantity of the radiating fans, saving the occupied space and the energy consumption of the radiating fans and reducing the product cost.

In some embodiments, the second air outlet channels and the second heat dissipation groups are respectively multiple, and the air outlet of each second air outlet channel is suitable for blowing to one second heat dissipation group.

In some embodiments, the air duct member has a first side and a second side disposed opposite to each other, the air outlet channel being formed in the first side, the second side being formed with a receiving cavity for receiving at least a circuit board mounted to the air duct member.

In some embodiments, the duct member further has a mounting cavity in communication with each of the air outlet passages, respectively, for mounting a fan.

In some embodiments, the fan is a turbine fan, and the air outlet channel is communicated with the peripheral wall of the mounting cavity.

In some embodiments, a first communication port and a second communication port are formed on the peripheral wall of the installation cavity, the first communication port and the second communication port are oppositely arranged along the radial direction of the installation cavity, the first air outlet channel is communicated with the first communication port, and the second air outlet channel is communicated with the second communication port.

In some embodiments, the second air outlet channels are multiple, and the multiple second air outlet channels extend from the second communication ports towards different directions respectively.

According to a second aspect of the present invention, a household appliance includes a first group to be cooled, a second group to be cooled, and an air duct member according to the first aspect of the present invention, where the household appliance is formed with a cooling cavity, the first group to be cooled, the second group to be cooled, and the air duct member are all disposed in the cooling cavity, the cooling cavity has an air inlet and an air outlet, the air inlet is communicated with the air inlet channel, and the air outlet is communicated with the air outlet channel.

According to the household appliance provided by the embodiment of the invention, the air duct piece is adopted, so that the product volume can be reduced, the energy consumption can be reduced and the product cost can be reduced on the premise of ensuring the heat dissipation requirement.

In some embodiments, the heat dissipation cavity comprises an air inlet cavity communicated with the air inlet and the air inlet channel respectively, and the circuit board of the household appliance is arranged in the air inlet cavity.

In some embodiments, the first group to be heat-dissipated is more heat-dissipated than the second group to be heat-dissipated.

In some embodiments, the second heat dissipation group is a plurality of second heat dissipation groups and is respectively located at different sides of the household appliance, the first heat dissipation group and the second heat dissipation group are respectively located at different sides of the household appliance, and an air guide piece is arranged between at least one second heat dissipation group and the air duct piece so as to guide the air outlet of the air duct piece to correspond to the second heat dissipation group.

In some embodiments, the second heat dissipation group includes a plurality of heat dissipation parts, the air guide part has at least one flow channel, each flow channel has one or more air outlets, and the air outlets are disposed corresponding to the heat dissipation parts.

In some embodiments, the household appliance includes an outer shell and an inner shell, the inner shell is disposed in the outer shell and defines with the outer shell the heat dissipation cavity together, the inner shell includes a bottom plate, a top plate, and a back plate and a side plate connected between the bottom plate and the top plate, the first heat dissipation group and the air duct piece are both disposed on the bottom plate, one of the second heat dissipation groups is disposed on the back plate, and the other second heat dissipation groups are disposed on the corresponding side plate.

In some embodiments, the household appliance is a cooking appliance with a microwave cooking function, the first group to be cooled includes a microwave generator, and the second group to be cooled includes at least one of a fan, a filter plate, a micro switch, a temperature measuring device, a lighting device, and a camera device.

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 foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of a tunnel member according to one embodiment of the invention, wherein arrows indicate airflow direction;

FIG. 2 is another schematic view of the tunnel member shown in FIG. 1;

FIG. 3 is a schematic view of an assembly of the air duct member and the heat dissipating fan shown in FIG. 1;

fig. 4 is a schematic view of a home appliance according to an embodiment of the present invention;

FIG. 5 is a partial schematic view of the household appliance shown in FIG. 4, wherein arrows indicate airflow directions;

FIG. 6 is a schematic view of an assembly of the air duct member, heat dissipating fan and side plates shown in FIG. 5, wherein arrows indicate airflow direction;

FIG. 7 is a schematic view of the air duct member, the heat dissipating fan, the air guiding member, and the second heat dissipating group shown in FIG. 6, wherein arrows indicate airflow directions;

FIG. 8 is a schematic view of the air guide shown in FIG. 7, wherein arrows indicate airflow direction.

Reference numerals:

a microwave oven 100,

The air duct piece 1, the air inlet channel 11, the air outlet channel 12, the mounting cavity 13, the accommodating cavity 14, the middle partition plate 15, the side plate 16, the first air outlet channel 121, the second air outlet channel 122, the outlet 122a, the air guide surface 122b,

A first communication port 13a, a second communication port 13b,

An inner shell 2, a bottom plate 21, side plates 22, a back plate 23,

A first group to be heat-dissipated 3, a frequency converter 31, a magnetron 32,

The second to-be-cooled heat exchanger 4, the hot air blower 41, the filter plate 42, the temperature measuring device 43, the micro switch 44, the light source 45, the air inlet cavity 5, the shell 6, the air guide 7, the runner 70, the air outlet 70a, the heat dissipation blower 8 and the circuit board 9.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

The following disclosure provides many different embodiments, or examples, for implementing different structures of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the applicability of other processes and/or the use of other materials.

Next, with reference to the drawings, the air channel member 1 according to the embodiment of the present invention is described. Wherein the air channel member 1 may be used for household appliances such as a microwave oven 100 and the like; for example, the household appliance includes a first to-be-cooled group 3 and a second to-be-cooled group 4, the first to-be-cooled group 3 and the second to-be-cooled group 4 are located at different positions, and the air duct member 1 can guide air flow to the first to-be-cooled group 3 and the second to-be-cooled group 4 respectively, so as to realize heat dissipation and cooling of the first to-be-cooled group 3 and the second to-be-cooled group 4 respectively, so as to ensure normal use of the household appliance. The first heat dissipation group 3 may include one or more heat dissipation elements, and the second heat dissipation group 4 may include one or more heat dissipation elements.

As shown in fig. 1 and 3, the air duct member 1 has an air inlet passage 11 and an air outlet passage 12, and the air inlet passage 11 and the air outlet passage 12 are communicated, so that the air flow flowing into the air inlet passage 11 can flow out through the air outlet passage 12. The number of the air outlet channels 12 is multiple, and the plurality of air outlet channels 12 comprise a first air outlet channel 121 and a second air outlet channel 122, so that air flow flowing into the air inlet channel 11 can be distributed into the first air outlet channel 121 and the second air outlet channel 122 to realize split flow, and the first air outlet channel 121 and the second air outlet channel 122 can be independently arranged to realize 'one-object-multiple-use' of the air flow flowing into the air inlet channel 11; the air-out of the first air-out channel 121 is suitable for blowing to the first group to be cooled 3 to cool the first group to be cooled 3, and the air-out of the second air-out channel 122 is suitable for blowing to the second group to be cooled 4 to cool the second group to be cooled 4.

As shown in fig. 1 and fig. 3, the first air outlet channel 121 and the second air outlet channel 122 are disposed opposite to each other, so that the direction of the air flow flowing from the air inlet channel 11 to the first air outlet channel 121 and the direction of the air flow flowing from the air inlet channel 11 to the second air outlet channel 122 are basically opposite, or, an obtuse angle or a flat angle is formed between the direction of the air flow flowing from the air inlet channel 11 to the first air outlet channel 121 and the direction of the air flow flowing from the air inlet channel 11 to the second air outlet channel 122, so that the positions of the first air outlet channel 121 and the second air outlet channel 122 can be better matched with the positions of the first to-be-cooled group 3 and the second to-be-cooled group 4, which is favorable for reducing the times of changing the flow direction of the air flow, is favorable for reducing the flow resistance of the air flow, and guaranteeing the cooling effect of the first to-be-cooled group 3 and the second to-be-cooled group 4.

According to the air duct piece 1 of the embodiment of the invention, the air duct piece 1 is provided with the plurality of air outlet air ducts 12, the plurality of air outlet air ducts 12 comprise the first air outlet air duct 121 and the second air outlet air duct 122 which are arranged back to each other so as to disperse radiating air flow and better match the positions of the first group 3 to be radiated and the second group 4 to be radiated, so that the number of times of changing the flow direction of the air flow is reduced, the first air outlet air duct 121 and the second air outlet air duct 122 are convenient for radiating different groups to be radiated respectively, the domestic appliances such as the microwave oven 100 can meet the radiating requirement by adopting only a single radiating fan 8, the wind energy utilization rate of the radiating fan 8 is effectively improved, the quantity of the radiating fans 8 is reduced, the occupied space and the energy consumption of the radiating fans 8 are saved, the product cost is reduced, and the air duct piece 1 has a simple structure and is convenient to process.

It is understood that the first air outlet channels 121 may be one or more, and the second air outlet channels 122 may be one or more.

In some embodiments of the present invention, as shown in fig. 1 and 3, at least an upstream section of the first air outlet channel 121 and at least an upstream section of the second air outlet channel 122 each extend in a horizontal direction, and then the following schemes are included: 1. an upstream section of the first air outlet passage 121 extends in a horizontal direction, and an upstream section of the second air outlet passage 122 extends in a horizontal direction; 2. the upstream section of the first air outlet passage 121 extends in the horizontal direction, and the entire second air outlet passage 122 extends in the horizontal direction; 3. the entire first air outlet passage 121 extends in the horizontal direction, and an upstream section of the second air outlet passage 122 extends in the horizontal direction; 4. the entire first air outlet passage 121 and the entire second air outlet passage 122 extend in the horizontal direction.

Therefore, the air flow in the air inlet channel 11 can smoothly flow into the first air outlet channel 121 and the second air outlet channel 122, can be well transited with the air inlet channel 11, and is convenient to simplify the structures of the first air outlet channel 121 and the second air outlet channel 122, so that the structure of the air duct piece 1 is simplified, and the processing is convenient.

It is understood that the air inlet channel 11 may extend linearly in a horizontal direction or may extend in a curved line, the first air outlet channel 121 may extend linearly in a horizontal direction or may extend in a curved line, and the second air outlet channel 122 may extend linearly in a horizontal direction or may extend in a curved line. The ratio of the length of the upstream section of the first air outlet channel 121 to the length of the entire first air outlet channel 121 and the ratio of the length of the upstream section of the second air outlet channel 122 to the length of the entire second air outlet channel 122 may be specifically set according to actual requirements.

Of course, the arrangement of the first and second air outlet passages 121 and 122 is not limited thereto; the first air outlet channel 121 may also be vertically disposed, and the second air outlet channel 122 may also be vertically disposed.

It can be appreciated that the air outlet direction of the first air outlet channel 121 and the air outlet direction of the second air outlet channel 122 may be specifically set according to actual requirements, and only the air outlet of the first air outlet channel 121 needs to be ensured to cool the first group to be cooled 3, and the air outlet of the second air outlet channel 122 may be ensured to cool the second group to be cooled 4.

In some embodiments of the present invention, as shown in fig. 1 and 3, the number of the second air outlet channels 122 and the second groups to be cooled 4 is plural, and the air outlet of each second air outlet channel 122 is suitable for blowing to one second group to be cooled 4, so that the air outlet of the plurality of second air outlet channels 122 can be blown to a plurality of different second groups to be cooled 4, so that the functions of the air flow flowing into the air inlet channel 11 are further enriched, and the heat dissipation requirements of the household appliances such as the components of the microwave oven 100 are better satisfied.

It can be appreciated that, when the plurality of second air outlet channels 122 are disposed opposite to the first air outlet channels 121, the plurality of included angles formed between the direction of the air flow flowing from the air inlet channel 11 to the plurality of second air outlet channels 122 and the direction of the air flow flowing from the air inlet channel 11 to the first air outlet channels 121 may be located in the same plane or may be located in different planes. For example, in the example of fig. 1, the first air outlet channel 121 and the plurality of second air outlet channels 122 extend in the horizontal direction, and a plurality of included angles formed between the direction of the air flow flowing from the air inlet channel 11 to the plurality of second air outlet channels 122 and the direction of the air flow flowing from the air inlet channel 11 to the first air outlet channel 121 are located in the same plane.

Of course, the second air outlet passage 122 may also be one.

In some embodiments of the present invention, as shown in fig. 1 and fig. 3, the outlet 122a of at least one second air outlet channel 122 has an air guiding surface 122b, and the air guiding surface 122b is a smooth curved surface, so that the air flow at the outlet 122a of the at least one second air outlet channel 122 flows more smoothly to the corresponding second group to be cooled 4 under the guidance of the air guiding surface 122b, which is beneficial to reducing the air outlet resistance of the second air outlet channel 122 and ensuring the cooling effect of the second group to be cooled 4.

In some embodiments of the present invention, as shown in fig. 1 and 2, the air duct member 1 has a first side and a second side disposed opposite to each other, the air outlet channel 12 is formed on the first side, the second side is formed with a receiving cavity 14, a side of the air outlet channel 12 facing away from the receiving cavity 14 is disposed open, and the receiving cavity 14 is used for receiving at least the circuit board 9 mounted on the air duct member 1, so that when the air duct member 1 is used in a household appliance, compact arrangement of the household appliance is facilitated, reasonable layout of the household appliance is facilitated, and occupied space is saved. Of course, other components of the household appliance may also be provided in the housing chamber 14.

It will be appreciated that when electronic components (such as a filter board 42 described later) are provided on the circuit board 9, the electronic components may also be accommodated in the accommodation chamber 14.

For example, in the example of fig. 1 and 2, the first side and the second side are respectively described as the upper side and the lower side, the air outlet passage 12 is formed at the upper side of the air channel member 1, and the accommodating chamber 14 is formed at the lower side of the air channel member 1; the receiving chamber 14 may include a first receiving chamber 141 and a second receiving chamber 142, the first receiving chamber 141 and the second receiving chamber 142 being sequentially arranged in a direction perpendicular to the up-down direction (e.g., a left-right direction in fig. 2), one of the first receiving chamber 141 and the second receiving chamber 142 may be used to receive the circuit board 9.

Alternatively, in the example of fig. 1 and 2, the air duct member 1 includes a middle partition 15 and a side plate 16, the side plate 16 is provided at the edge of the middle partition 15, and the side plate 16 extends along the outer periphery of the middle partition 15, the upper surface of the middle partition 15 may participate in defining the air outlet passage 12, and the lower surface of the middle partition 15 may participate in defining the accommodation chamber 14.

In some embodiments of the present invention, as shown in fig. 1 and 3, the air duct member 1 further has a mounting cavity 13, where the mounting cavity 13 is respectively communicated with each air outlet channel 12, and the mounting cavity 13 is also communicated with the air inlet channel 11, for example, the mounting cavity 13 is communicated between the air inlet channel 11 and the air outlet channel 12, and the mounting cavity 13 is used for mounting the heat dissipation fan 8, so that the functions of the air duct member 1 are further enriched, and the air duct member 1 facilitates the mounting of the heat dissipation fan 8 while realizing the split flow.

Of course, the heat radiation fan 8 may be not mounted to the mounting cavity 13 of the air duct member 1, for example, the air duct member 1 may be provided on the outlet side of the heat radiation fan 8.

Optionally, as shown in fig. 1 and fig. 3, the heat dissipation fan 8 is a turbine fan, and the air outlet channel 12 is communicated with the peripheral wall of the installation cavity 13, so that the air outlet of the turbine fan smoothly flows to the air outlet channel 12, and the turbine fan can output larger air quantity under the condition of occupying smaller space, thereby improving the heat dissipation effect. The installation cavity 13 may be formed on a first side of the air duct member 1, and the second side of the air duct member 1 is formed with an accommodating cavity 14, and the accommodating cavity 14 may include a first accommodating cavity 141 and a second accommodating cavity 142, where the first accommodating cavity 141 is disposed opposite to the installation cavity 13, so that the first accommodating cavity 141 accommodates the motor of the heat dissipation fan 8.

In some embodiments, as shown in fig. 1 and 3, the peripheral wall of the installation cavity 13 is formed with a first communication port 13a and a second communication port 13b, the first communication port 13a and the second communication port 13b are oppositely arranged along the radial direction of the installation cavity 13, the first air outlet channel 121 is communicated with the first communication port 13a, and the second air outlet channel 122 is communicated with the second communication port 13b, so that the first air outlet channel 121 and the second air outlet channel 122 are respectively communicated with different communication ports on the peripheral wall of the installation cavity 13, so that mutual independence of the first air outlet channel 121 and the second air outlet channel 122 is better ensured, and meanwhile, air flow in the installation cavity 13 is more smoothly distributed to the first air outlet channel 121 and the second air outlet channel 122, and back-to-back arrangement of the first air outlet channel 121 and the second air outlet channel 122 is ensured.

The circumferential direction of the installation cavity 13 is the circumferential direction of the heat dissipation fan 8, and the radial direction of the installation cavity 13 is the radial direction of the heat dissipation fan 8.

Of course, the first air outlet passage 121 and the second air outlet passage 122 may also be commonly connected to the same communication port of the peripheral wall of the installation cavity 13, for example, the first communication port 13a or the second communication port 13b.

For example, as shown in fig. 1, a plurality of second air outlet passages 122 are provided, and each second air outlet passage 122 is connected to the second communication port 13b, which is beneficial to simplifying the processing of the installation cavity 13. In some embodiments, as shown in fig. 1, the first communication port 13a and the second communication port 13b are disposed opposite to each other along the radial direction of the installation cavity 13, where the first air outlet passage 121 and the second air outlet passage 122 may be disposed opposite to each other substantially along the radial direction of the installation cavity 13; the second air outlet channels 122 are multiple, and the second air outlet channels extend from the second communication ports 13b towards different directions respectively, so that the second air outlet channels 122 guide air flow towards different directions, and the air outlet of the air duct piece 1 can be dispersed conveniently, so that the positions of the first to-be-cooled group 3 and the second to-be-cooled group 4 can be matched better.

The household appliance according to the embodiment of the second aspect of the invention comprises a first group to be radiated 3, a second group to be radiated 4 and an air duct piece 1, wherein the household appliance is provided with a radiating cavity, the first group to be radiated 3, the second group to be radiated and the air duct piece 1 are all arranged in the radiating cavity, the radiating cavity is provided with an air inlet and an air outlet, the air inlet is communicated with an air inlet channel 11, and the air outlet is communicated with an air outlet channel 12. Wherein the air duct member 1 is the air duct member 1 according to the above-described first embodiment of the present invention.

According to the household appliance provided by the embodiment of the invention, the air duct piece 1 is adopted, so that the product volume can be reduced, the energy consumption can be reduced and the product cost can be reduced on the premise of ensuring the heat dissipation requirement.

In some embodiments of the present invention, as shown in fig. 3 and 5, the heat dissipation cavity includes an air intake cavity 5, the air intake cavity 5 is respectively communicated with the air intake and the air intake channel 11, then the air intake cavity 5 is communicated between the air intake and the air intake channel 11, the circuit board is arranged in the air intake cavity 5, when the heat dissipation fan 8 of the household appliance operates, air outside the household appliance can flow into the air intake cavity 5 through the air intake to dissipate heat of the circuit board, and then the air flow flows to the air intake channel 11. Thus, the function of the air duct piece 1 is further enriched by arranging the circuit board in the air inlet cavity 5.

Alternatively, the home appliance is the microwave oven 100, and the circuit board may be a frequency converter circuit board of the microwave oven 100.

In some embodiments of the present invention, as shown in fig. 5 to 7, the number of second groups to be heat-dissipated 4 is plural, and the plurality of second groups to be heat-dissipated 4 are located on different sides of the household appliance respectively, so as to facilitate the implementation of the dispersed arrangement of the plurality of second groups to be heat-dissipated 4, and facilitate the reduction of the heat dissipation effect of each second group to be heat-dissipated 4 on the other second groups to be heat-dissipated 4, so as to facilitate the guarantee of the heat dissipation effect of each second group to be heat-dissipated 4; moreover, the first to-be-radiated group 3 and each second to-be-radiated group 4 are respectively located on different sides of the household appliance, so that the dispersing parts of the first to-be-radiated group 3 and the plurality of second to-be-radiated groups 4 are further realized, the heat radiation influence between the first to-be-radiated group 3 and the second to-be-radiated group 4 is reduced, and the heat radiation effect of the first to-be-radiated group 3 and the second to-be-radiated group 4 is guaranteed simultaneously.

The air guiding member 7 is disposed between the at least one second heat dissipation group 4 and the air duct member 1 to guide the air outlet of the air duct member 1 to the corresponding second heat dissipation group 4, so that the air guiding member 7 may define the air outlet channel 70, the air outlet channel 70 is communicated with the second air outlet channel 122, and the air outlet channel 70 extends toward the corresponding second heat dissipation group 4, thereby simplifying the structure of the air duct member 1, and enabling the air duct member 1 to better match with the microwave ovens 100 with different structural layouts.

For example, in the examples of fig. 5 and 7, the number of the second groups to be heat-dissipated 4 is three, wherein one air guiding member 7 is provided between the two second groups to be heat-dissipated 4 located on the right side and the rear side of the heat dissipation chamber and the air duct member 1, respectively. Of course, the number and arrangement of the second groups to be heat-radiated 4, and the arrangement of the air guides 7 are not limited thereto.

Optionally, the heat productivity of the first heat dissipation waiting group 3 is greater than the heat productivity of the second heat dissipation waiting group 4, and whether the second heat dissipation waiting group 4 is one or more, the heat productivity of the first heat dissipation waiting group 3 is greater than the heat productivity of each second heat dissipation waiting group 4, so that the heat dissipation influence of the first heat dissipation waiting group 3 on the plurality of second heat dissipation waiting groups 4 is reduced.

In some embodiments of the present invention, as shown in fig. 5, 7 and 8, the second heat dissipation component 4 includes a plurality of heat dissipation components, the air guiding component 7 has at least one flow channel 70, each flow channel 70 has one or more air outlets 70a, and the air outlets 70a are disposed corresponding to the heat dissipation components, so that one air outlet 70a may correspond to one or more heat dissipation components, or the air outlets 70a may correspond to a plurality of heat dissipation components, so that one air guiding component 7 may satisfy heat dissipation requirements of a plurality of heat dissipation components, so as to effectively satisfy heat dissipation requirements of the whole microwave oven 100.

For example, in the examples of fig. 5, fig. 7 and fig. 8, the air guiding member 7 is disposed between the second heat dissipation component 4 located on the right side of the heat dissipation cavity and the air duct member 1, and the number of the heat dissipation components of the second heat dissipation component 4 located on the right side of the heat dissipation cavity is five, and the number of the flow channels 70 of the air guiding member 7 is two, wherein one flow channel 70 has one air outlet 70a, the other flow channel 70 has two air outlets 70a, the air flow in one flow channel 70 can dissipate heat from one heat dissipation component, and the air flow in the other flow channel 70 can dissipate heat from the other four heat dissipation components, so that the air guiding member 7 can be better matched with the arrangement positions of the plurality of heat dissipation components of the second heat dissipation component 4.

Of course, the number of the heat dissipation elements of the second heat dissipation group 4 may be one; for example, in the examples of fig. 5 and 7, the air guiding member 7 is disposed between the second heat dissipation group 4 located at the rear side of the heat dissipation cavity and the air duct member 1, and the second heat dissipation group 4 located at the rear side of the heat dissipation cavity has one heat dissipation member, the air guiding member 7 has a flow passage 70, and the flow passage 70 has an air outlet 70a.

In some embodiments of the present invention, as shown in fig. 4 to 6, the home appliance includes an outer case 6 and an inner case 2, the inner case 2 is provided within the outer case 6, and the inner case 2 and the outer case 6 define a heat dissipation chamber together; the inner shell 2 comprises a top plate, a bottom plate 21, a back plate 23 and side plates 22, wherein the back plate 23 and the side plates 22 are connected between the top plate and the bottom plate 21, the first heat-dissipating group 3 and the air duct piece 1 are arranged on the bottom plate 21, one second heat-dissipating group 4 is arranged on the back plate 23, the other second heat-dissipating groups 4 are arranged on the corresponding side plates 22, so that reasonable layout of the household appliance is realized, meanwhile, the first heat-dissipating group 3 and the second heat-dissipating groups 4 are distributed in a dispersed manner, and the heat-dissipating effect of the second heat-dissipating groups 4 is improved.

It will be appreciated that there are a plurality of side plates 22, for example, two side plates 22, and that the two side plates 22 are located on the left and right sides of the back plate 23, respectively. For example, two second groups 4 to be cooled may be provided, and another second group 4 to be cooled may be provided on one of the plurality of side plates 22; alternatively, the number of the second heat dissipation groups 4 is three or more, and the remaining second heat dissipation groups 4 may be respectively disposed on different side plates 22.

For example, in the example of fig. 4 to 7, the household appliance is a microwave oven 100, the inner case 2 defines a cooking cavity, the inner case 2 includes four side plates 22, so that the cooking cavity is formed into a hexahedral cavity structure, the second heat dissipation group 4 may be three, one of the second heat dissipation groups 4 is located at the bottom of the microwave oven 100, the second heat dissipation group 4 is fixedly disposed on the bottom plate 21, one of the remaining two second heat dissipation groups 4 is located at the right side of the microwave oven 100, the second heat dissipation group 4 may be fixedly disposed on the right side plate 22, the other second heat dissipation group 4 is located at the rear side of the microwave oven 100, and the second heat dissipation group 4 may be fixedly disposed on the rear side plate 22. The air duct member 1 is also located at the bottom of the microwave oven 100, and the air duct member 1 is fixedly disposed on the bottom plate 21, so that the air duct member 1 is convenient to mount, and meanwhile, avoidance of the air duct member 1 to the cooking cavity of the microwave oven 100 is convenient to ensure, so that enough space is reserved for the cooking cavity, and the microwave oven 100 is convenient to make the structure more compact.

The second heat dissipation group 4 located at the lower side of the cooking cavity includes a filter plate 42, the second heat dissipation group 4 located at the rear side of the cooking cavity includes a hot air fan 41, and the second heat dissipation group 4 located at the right side of the cooking cavity includes a temperature measuring device 43, a micro switch 44 and a light source 45.

In some embodiments, the first to-be-cooled group 3 includes one or more to-be-cooled pieces, and the second to-be-cooled group 4 includes one or more to-be-cooled pieces, so that the air duct piece 1 can better match different structural layouts of the microwave oven 100, and effectively meet the heat dissipation requirement of the whole microwave oven 100. For example, the home appliance is a cooking appliance having a microwave cooking function, the first group to be heat-dissipated 3 includes a microwave generator, and the second group to be heat-dissipated 4 includes at least one of a blower fan, a filter plate 42, a micro switch 44, a temperature measuring device 43, an illumination device, and an image pickup device.

It is understood that the roles of the first group to be cooled 3 and the second group to be cooled 4 in the household appliance are well known to those skilled in the art, and will not be described herein.

Alternatively, as shown in fig. 5, taking a household appliance as an example of the microwave oven 100, the first group to be heat-dissipated 3 includes at least one of the frequency converter 31 and the magnetron 32, the first group to be heat-dissipated 3 may include the frequency converter 31, or the first group to be heat-dissipated 3 includes the magnetron 32, or the first group to be heat-dissipated 3 includes the frequency converter 31 and the magnetron 32; the second heat dissipation group 4 includes at least one of the hot air blower 41, the filter board 42, the temperature measuring device 43, the micro switch 44, the light source 45 and the image pickup device, and then the second heat dissipation group 4 includes one of the hot air blower 41, the filter board 42, the temperature measuring device 43, the micro switch 44, the light source 45 and the image pickup device, or the second heat dissipation group 4 includes at least two of the hot air blower 41, the filter board 42, the temperature measuring device 43, the micro switch 44, the light source 45 and the image pickup device.

The hot air blower 41 can blow air flow heated by the heating component of the microwave oven 100 into the cooking cavity to realize convection heating, so as to facilitate the hot air baking function of the microwave oven 100, for example, facilitate the microwave oven 100 to realize the air frying effect, the temperature measuring device 43 can be used for measuring the temperature in the cooking cavity or measuring the temperature of food in the cooking cavity, for example, the infrared sensor, the light source 45 can be an LED lamp, etc., the micro-switch 44 is three, and the light source 45 is arranged between the three micro-switches 44 and the temperature measuring device 43.

It can be appreciated that when the number of the second heat dissipation groups 4 is plural, the hot air blower 41, the filter board 42, the temperature measuring device 43, the micro switch 44 and the light source 45 may be respectively allocated to the corresponding second heat dissipation groups 4, so as to achieve good matching between the plural heat dissipation components and the second air outlet duct 122. For example, the hot air blower 41 is located at the rear side of the microwave oven 100, the filter plate 42 is located at the bottom of the microwave oven 100, the temperature measuring device 43, the micro switch 44 and the light source 45 are all located at the right side of the microwave oven 100, the number of the second heat dissipation groups 4 can be three, one of the second heat dissipation groups 4 includes the hot air blower 41, one of the other two second heat dissipation groups 4 includes the filter plate 42, and the other second heat dissipation group 4 includes the temperature measuring device 43, the micro switch 44 and the light source 45.

Other constructions and operations of the home appliance 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 of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means 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, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. 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 present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims (14)

1. The utility model provides an air duct piece, its characterized in that, air duct piece has air inlet passageway and the air-out passageway of intercommunication, the air-out passageway is a plurality of and including the first air-out passageway and the second air-out passageway that set up dorsad, the air-out of first air-out passageway is suitable for blowing to first group of waiting to dispel the heat, the air-out of second air-out passageway is suitable for blowing to the second and waiting to dispel the heat the group, first group of waiting to dispel the heat with the second is waited to dispel the heat the group and is located different positions respectively.

2. The air duct member of claim 1, wherein the second air outlet passages and the second heat dissipation groups are plural, respectively, and the air outlet of each second air outlet passage is adapted to blow to one of the second heat dissipation groups.

3. The air duct member of claim 1, wherein the air duct member has oppositely disposed first and second sides, the air outlet passage being formed in the first side, the second side being formed with a receiving cavity for receiving at least a circuit board mounted to the air duct member.

4. A duct member according to any one of claims 1-3, further having a mounting cavity in communication with each of the air outlet channels, respectively, for mounting a heat dissipating fan.

5. The duct member of claim 4, wherein the heat dissipation fan is a turbo fan and the air outlet passage communicates with the peripheral wall of the mounting chamber.

6. The air duct member according to claim 4, wherein the peripheral wall of the installation chamber is formed with a first communication port and a second communication port which are disposed opposite to each other in a radial direction of the installation chamber, the first air outlet passage is communicated with the first communication port, and the second air outlet passage is communicated with the second communication port.

7. The air duct member of claim 6, wherein the second air outlet passages are plural, and the plural second air outlet passages extend from the second communication ports toward different directions, respectively.

8. A household appliance, characterized by comprising a first group to be radiated, a second group to be radiated and an air duct piece according to any one of claims 1-7, wherein a radiating cavity is formed in the household appliance, the first group to be radiated, the second group to be radiated and the air duct piece are all arranged in the radiating cavity, the radiating cavity is provided with an air inlet and an air outlet, the air inlet is communicated with the air inlet channel, and the air outlet is communicated with the air outlet channel.

9. The household appliance of claim 8, wherein the heat dissipation cavity comprises an air intake cavity in communication with the air intake and the air intake channel, respectively, and the circuit board of the household appliance is disposed in the air intake cavity.

10. The household appliance of claim 8, wherein the second heat dissipation group is a plurality of second heat dissipation groups and is respectively located on different sides of the household appliance, the first heat dissipation group and each second heat dissipation group are respectively located on different sides of the household appliance,

and an air guide piece is arranged between at least one second heat-dissipating group and the air duct piece so as to guide the air outlet of the air duct piece to correspond to the second heat-dissipating group.

11. The household appliance according to claim 10, wherein the first group to be heat-radiated generates a larger amount of heat than each of the second groups to be heat-radiated.

12. The household appliance according to claim 11, wherein the second heat dissipation group comprises a plurality of heat dissipation elements, the air guide has at least one runner, each runner has one or more air outlets, and the air outlets are arranged corresponding to the heat dissipation elements.

13. The household appliance of claim 11, wherein the household appliance comprises an outer shell and an inner shell, wherein the inner shell is arranged in the outer shell and together with the outer shell defines the heat dissipation cavity, the inner shell comprises a bottom plate, a top plate, and a back plate and a side plate connected between the bottom plate and the top plate, the first heat dissipation group and the air duct piece are both arranged on the bottom plate, one of the second heat dissipation group is arranged on the back plate, and the other second heat dissipation groups are arranged on the corresponding side plate.

14. The household appliance according to any one of claims 8-13, wherein the household appliance is a cooking appliance with a microwave cooking function, the first group to be heat-dissipated comprises a microwave generator, and the second group to be heat-dissipated comprises at least one of a fan, a filter plate, a micro switch, a temperature measuring device, a lighting device, and a camera device.