WO2023221289A1

WO2023221289A1 - Air duct member and household appliance comprising same

Info

Publication number: WO2023221289A1
Application number: PCT/CN2022/107428
Authority: WO
Inventors: 刘存; 冼伟杰; 戚志斌; 田赟; 钟鹏; 丁伟伟; 冯敬泳; 远藤实
Original assignee: 广东美的厨房电器制造有限公司; 美的集团股份有限公司
Priority date: 2022-05-20
Filing date: 2022-07-22
Publication date: 2023-11-23
Also published as: CN117135786A

Abstract

An air duct member (1) and a household appliance comprising same. The air duct member (1) comprises an air inlet channel (11) and air outlet channels (12) that are communicated with each other; the number of the air outlet channels (12) is greater than one, and the air outlet channels (12) comprise a first air outlet channel (121) and a second air outlet channel (122) that are oppositely arranged; outgoing air of the first air outlet channel (121) is suitable for blowing to a first group (3) to be cooled, and outgoing air of the second air outlet channel (122) is suitable for blowing to a second group (4) to be cooled; and the first group (3) to be cooled and the second group (4) to be cooled are respectively located at different positions.

Description

Air duct parts and household appliances having the same

Cross-references to related applications

This application is filed based on a Chinese patent application with application number 202210556866.5 and a filing date of May 20, 2022, and claims the priority of the above-mentioned Chinese patent application. The entire content of the above-mentioned Chinese patent application is hereby incorporated by reference into this application.

Technical field

The present application relates to the technical field of household appliances, and in particular to an air duct component and household appliances having the same.

Background technique

In the related art, multiple heat dissipation parts in a microwave oven need to be dissipated. In order to ensure the heat dissipation requirement, two or more cooling fans are usually provided to cool the corresponding heat dissipation parts. However, this setting method has the following problems: 1. Multiple cooling fans occupy a large space, resulting in an oversized product; 2. The wind energy utilization rate is not high and the energy loss is large, which requires more cooling fans to make up for it; 3. The cost is higher.

Contents of the invention

This application aims to solve at least one of the technical problems existing in the related art. To this end, this application proposes an air duct component that facilitates household appliances such as microwave ovens to meet heat dissipation requirements using only a single cooling fan.

This application also proposes a household appliance having the above-mentioned air duct component.

According to the air duct component of the first embodiment of the present application, the air duct component has a connected air inlet channel and an air outlet channel. The air outlet channels are multiple and include a first air outlet channel and a third air outlet channel arranged back to back. Two air outlet channels, the air outlet of the first air outlet channel is suitable for blowing to the first heat dissipation group, the air outlet of the second air outlet channel is suitable for blowing to the second heat dissipation group, and the first air outlet channel is suitable for blowing to the second heat dissipation group. The heat dissipation group and the second heat dissipation group are located in different positions respectively.

According to the air duct component of the embodiment of the present application, the air duct component is provided with a plurality of air outlet ducts, and the plurality of air outlet ducts include a first air outlet duct and a second air outlet duct arranged back to back, so as to The cooling airflow is dispersed to better match the positions of the first and second heat dissipation groups, which is conducive to reducing the number of times the airflow changes direction, making it easier for the first air outlet air duct and the second air outlet air duct to respectively The heat dissipation group to be dissipated is convenient for household appliances such as microwave ovens to use only a single cooling fan to meet the cooling needs, effectively improving the wind energy utilization rate of the cooling fan, while reducing the number of cooling fans, saving the space occupied by the cooling fan and energy consumption, reducing product costs.

In some embodiments, there are multiple second air outlet channels and second heat dissipation groups, and the air outlet from 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 arranged oppositely, the air outlet channel is formed on the first side, and an accommodation cavity is formed on the second side, and the accommodation cavity It is used to accommodate at least the circuit board installed on the air duct component.

In some embodiments, the air duct member also has an installation cavity, which is separately connected to each of the air outlet channels and is used to install a fan.

In some embodiments, the fan is a turbine fan, and the air outlet channel is connected to the peripheral wall of the installation cavity.

In some embodiments, the peripheral wall of the installation cavity is formed with a first communication opening and a second communication opening that are arranged oppositely in a radial direction of the installation cavity, and the first air outlet channel is connected to the first communication opening. , the second air outlet channel is connected to the second communication port.

In some embodiments, there are multiple second air outlet channels, and the plurality of second air outlet channels extend in different directions from the second communication opening.

A household appliance according to the second embodiment of the present application includes a first heat dissipation group, a second heat dissipation group and an air duct member according to the first embodiment of the present application. The household appliance is formed with a heat dissipation cavity, and the The first heat dissipation group, the second heat dissipation group and the air duct member are all located in the heat dissipation cavity. The heat dissipation cavity has an air inlet and an air outlet, and the air inlet is connected with the air inlet channel. The air outlet is connected with the air outlet channel.

According to the household appliances according to the embodiments of the present application, by using the above-mentioned air duct components, the product volume can be reduced, the energy consumption can be reduced, and the product cost can be reduced while ensuring heat dissipation requirements.

In some embodiments, the heat dissipation cavity includes an air inlet cavity that is respectively connected with the air inlet and the air inlet channel, and the circuit board of the household appliance is located in the air inlet cavity.

In some embodiments, the heat generated by the first group to be heat dissipated is greater than the heat generated by the second group to be heat dissipated.

In some embodiments, there are multiple second groups to be heat dissipated and are located on different sides of the household appliance, and the first group to be heat dissipated and the second group to be heat dissipated are located on different sides of the household appliance. side, wherein an air guide member is provided between at least one of the second groups to be heat dissipated and the air duct member to guide the air outlet of the air duct member to the corresponding second group to be heat dissipated.

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 of the flow channels has one or more air outlets, and the air outlets are connected to The parts to be heat dissipated are arranged correspondingly.

In some embodiments, the household appliance includes an outer shell and an inner shell. The inner shell is disposed inside the outer shell and defines the heat dissipation cavity together with the outer shell. The inner shell includes a bottom plate, a top plate and a connection On the back plate and side plate between the bottom plate and the top plate, the first heat dissipation group and the air duct member are both provided on the bottom plate, and one of the second heat dissipation groups is provided on the On the back panel, the remaining second heat dissipation groups are located on the corresponding side panels.

In some embodiments, the household appliance is a cooking utensil with a microwave cooking function, the first heat dissipation group includes a microwave generator, and the second heat dissipation group includes a fan, a filter plate, a micro switch, a temperature measurement device, and a fan. At least one of a device, a lighting device and a camera device.

Additional aspects and advantages of the application 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 application.

Description of the drawings

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

Figure 1 is a schematic diagram of an air duct component according to an embodiment of the present application, in which arrows indicate the direction of airflow;

Figure 2 is another schematic view of the air duct member shown in Figure 1;

Figure 3 is a schematic diagram of the assembly of the air duct component and the cooling fan shown in Figure 1;

Figure 4 is a schematic diagram of a household appliance according to an embodiment of the present application;

Figure 5 is a partial schematic diagram of the household appliance shown in Figure 4, in which arrows indicate the direction of air flow;

Figure 6 is a schematic assembly diagram of the air duct parts, cooling fans and side panels shown in Figure 5, in which arrows indicate the direction of air flow;

Figure 7 is a schematic diagram of the air duct member, cooling fan, air guide member and second heat dissipation group shown in Figure 6, in which arrows indicate the direction of air flow;

FIG. 8 is a schematic diagram of the air guide shown in FIG. 7 , in which arrows indicate the direction of air flow.

Reference signs:

Microwave oven 100,

Air duct piece 1, air inlet channel 11, air outlet channel 12, installation cavity 13, accommodation cavity 14, middle partition 15, side plate 16,

The first air outlet channel 121, the second air outlet channel 122, the outlet 122a, the air guide surface 122b,

The first communication port 13a, the second communication port 13b,

Inner shell 2, bottom plate 21, side plate 22, back plate 23,

The first heat dissipation group 3, the frequency converter 31, the magnetron 32,

The second heat dissipation group 4, hot air fan 41, filter plate 42, temperature measuring device 43, micro switch 44, light source 45,

Air inlet cavity 5, shell 6, air guide 7, flow channel 70, air outlet 70a, cooling fan 8, circuit board 9.

Detailed ways

The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and cannot be understood as limiting the present application.

The following disclosure provides many different embodiments or examples for implementing different structures of the present application. To simplify the disclosure of the present application, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the application. Furthermore, this application may repeat reference numbers and/or letters in different examples. This repetition is for purposes of simplicity and clarity and does not by itself indicate a relationship between the various embodiments and/or arrangements discussed. In addition, this application 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.

Below, with reference to the accompanying drawings, the air duct member 1 according to the embodiment of the present application is described. Among them, the air duct member 1 can be used in household appliances, such as microwave ovens 100, etc.; for example, the household appliances include a first heat dissipation group 3 and a second heat dissipation group 4. The first heat dissipation group 3 and the second heat dissipation group 4 are respectively Located at different positions, the air duct member 1 can guide the airflow to the first heat dissipation group 3 and the second heat dissipation group 4 respectively, so as to realize the heat dissipation and cooling of the first heat dissipation group 3 and the second heat dissipation group 4 respectively. Ensure the normal use of household appliances. The first group 3 to be heat dissipated may include one or more components to be heat dissipated, and the second group to be heat dissipated 4 may include one or more components to be heat dissipated.

As shown in Figures 1 and 3, the air duct member 1 has an air inlet channel 11 and an air outlet channel 12. The air inlet channel 11 and the air outlet channel 12 are connected, so the airflow flowing into the air inlet channel 11 can pass through the air outlet channel. 12 outflow. There are a plurality of air outlet channels 12 , and the plurality of air outlet channels 12 include a first air outlet channel 121 and a second air outlet channel 122 . The airflow flowing into the air inlet channel 11 can be distributed to the first air outlet channel. 121 and the second air outlet channel 122 to achieve flow separation, the first air outlet channel 121 and the second air outlet channel 122 can be set independently to achieve "multiple uses" of the air flowing into the air inlet channel 11; The air from an air outlet channel 121 is suitable for blowing to the first heat dissipation group 3 to dissipate heat for the first heat dissipation group 3, and the air outlet from the second air outlet channel 122 is suitable for blowing to the second heat dissipation group 4. To dissipate heat to the second group 4 to be dissipated.

Wherein, as shown in Figures 1 and 3, the first air outlet channel 121 and the second air outlet channel 122 are arranged back to back, so the direction of the air flow from the air inlet channel 11 to the first air outlet channel 121 is different from that of the air inlet channel 121. 11 The direction of the air flow flowing to the second air outlet channel 122 is basically opposite. In other words, the direction of the air flow flowing from the air inlet channel 11 to the first air outlet channel 121 is different from the direction of the air flow flowing from the air inlet channel 11 to the second air outlet channel 122. An obtuse or flat angle is formed between the directions, so that the settings of the first air outlet channel 121 and the second air outlet channel 122 can better match the positions of the first to-be-heated-dissipation group 3 and the second to-be-heated-dissipation group 4. It is beneficial to reduce the number of times the air flow changes direction, to reduce the air flow resistance, and to ensure the heat dissipation effect of the first heat dissipation group 3 and the second heat dissipation group 4.

According to the air duct member 1 of the embodiment of the present application, the air duct member 1 is provided with a plurality of air outlet ducts 12 , and the plurality of air outlet ducts 12 include a first air outlet duct 121 and a second air outlet duct 121 arranged back to back. The air duct 122 is used to disperse the heat dissipation airflow to better match the positions of the first heat dissipation group 3 and the second heat dissipation group 4, which is beneficial to reducing the number of times the air flow changes direction, and facilitates the first air outlet air duct 121 and The second air outlet duct 122 dissipates heat for different groups to be dissipated respectively, so that household appliances such as microwave ovens 100 can meet the heat dissipation needs with only a single cooling fan 8, effectively improving the wind energy utilization rate of the cooling fan 8, and at the same time reducing The number of cooling fans 8 saves the space and energy consumption of the cooling fans 8 and reduces the product cost, and the air duct part 1 has a simple structure and is easy to process.

It can be understood that there may be one or more first air outlet channels 121 and there may be one or more second air outlet channels 122 .

In some embodiments of the present application, as shown in Figures 1 and 3, at least the upstream section of the first air outlet channel 121 and at least the upstream section of the second air outlet channel 122 both extend in the horizontal direction, the following solutions are included: 1. The upstream section of the first air outlet channel 121 extends in the horizontal direction, and the upstream section of the second air outlet channel 122 extends in the horizontal direction; 2. The upstream section of the first air outlet channel 121 extends in the horizontal direction, and the entire second air outlet channel 122 extends in the horizontal direction. The air channel 122 extends along the horizontal direction; 3. The entire first air outlet channel 121 extends along the horizontal direction, and the upstream section of the second air outlet channel 122 extends along the horizontal direction; 4. The entire first air outlet channel 121 and the entire second air outlet channel 122 extend along the horizontal direction. The air channels 122 all extend in the horizontal direction.

Therefore, the air flow in the air inlet channel 11 can flow more smoothly into the first air outlet channel 121 and the second air outlet channel 122, and the transition with the air inlet channel 11 can be better, and the first air outlet channel can be simplified. The structure of the channel 121 and the second air outlet channel 122 simplifies the structure of the air duct member 1 and facilitates processing.

It can be understood that the air inlet channel 11 can extend in a straight line or a curve along the horizontal direction, the first air outlet channel 121 can extend in a straight line or a curve in the horizontal direction, and the second air outlet channel 122 can extend in a straight line or in the horizontal direction. or curve extension. The length of the upstream section of the first air outlet channel 121 occupies a proportion of the entire length of the first air outlet channel 121 , and the length of the upstream section of the second air outlet channel 122 occupies a proportion of the entire length of the second air outlet channel 122 . Set according to actual needs.

Of course, the arrangement of the first air outlet channel 121 and the second air outlet channel 122 is not limited to this; the first air outlet channel 121 can also be arranged vertically, and the second air outlet channel 122 can also be arranged vertically.

It can be understood that the air outlet direction of the first air outlet channel 121 and the air outlet direction of the second air outlet channel 122 can be specifically set according to actual needs. It only needs to ensure that the air outlet of the first air outlet channel 121 can respond to the first patient. The heat dissipation group 3 is cooled, and the air outflow from the second air outlet channel 122 can cool the second heat dissipation group 4 .

In some embodiments of the present application, as shown in Figures 1 and 3, there are multiple second air outlet channels 122 and second heat dissipation groups 4, and the air outlet of each second air outlet channel 122 is suitable for blowing To one second heat dissipation group 4 , the air from the plurality of second air outlet channels 122 can be blown to a plurality of different second heat dissipation groups 4 respectively, further enriching the function of the air flow into the air inlet channel 11 , to better meet the heat dissipation needs of multiple components of household appliances such as the microwave oven 100 .

It can be understood that when the plurality of second air outlet channels 122 are respectively arranged opposite to the first air outlet channel 121, the direction of the air flow from the air inlet channel 11 to the plurality of second air outlet channels 122 is consistent with the direction of the air flow from the air inlet channel 122. 11 The multiple included angles formed between the directions of the airflow flowing to the first air outlet channel 121 may be located in the same plane or 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 both extend in the horizontal direction, and the direction of the air flow from the air inlet channel 11 to the plurality of second air outlet channels 122 is the same as that from the air inlet channel 11 to the second air outlet channels 122 . Multiple included angles formed between the directions of the air flow from the air inlet channel 11 to the first air outlet channel 121 are located in the same plane.

Of course, there can also be one second air outlet channel 122 .

In some embodiments of the present application, as shown in Figures 1 and 3, the outlet 122a of at least one second air outlet channel 122 has an air guide surface 122b, and the air guide surface 122b is a smooth curved surface, then the at least one second air outlet channel 122 has a smooth curved surface. The airflow at the outlet 122a of the air outlet channel 122 flows more smoothly to the second heat dissipation group 4 under the guidance of the air guide surface 122b, which is beneficial to reducing the air outlet resistance of the second air outlet channel 122 and ensuring the second heat dissipation group 4 The heat dissipation effect.

In some embodiments of the present application, as shown in Figures 1 and 2, the air duct member 1 has a first side and a second side arranged oppositely, the air outlet channel 12 is formed on the first side, and the second side is formed with an accommodating space. The cavity 14 and the side of the air outlet channel 12 away from the accommodating cavity 14 are open. The accommodating cavity 14 is used to accommodate at least the circuit board 9 installed on the air duct member 1. When the air duct member 1 is used for household appliances, it is convenient to implement The compact layout of household appliances facilitates the rational layout of household appliances and saves space. Of course, other components of household appliances can also be provided in the accommodation cavity 14 .

It can be understood that when the circuit board 9 is provided with electronic components (such as the filter board 42 described below), the electronic components can also be accommodated in the containing cavity 14 .

For example, in the examples of FIGS. 1 and 2 , taking the first side and the second side as the upper side and the lower side respectively, the air outlet channel 12 is formed on the upper side of the air duct member 1 , and the accommodation cavity 14 is formed. On the lower side of the air duct member 1; the accommodating cavity 14 may include a first accommodating cavity 141 and a second accommodating cavity 142, the first accommodating cavity 141 and the second accommodating cavity 142 are along a direction perpendicular to the up-down direction (for example, in FIG. 2 (left and right directions), one of the first accommodation cavity 141 and the second accommodation cavity 142 may be used to accommodate the circuit board 9 .

Optionally, in the examples of FIGS. 1 and 2 , the air duct member 1 includes a middle partition 15 and an edge plate 16 . The edge plate 16 is provided at the edge of the middle partition 15 , and the edge plate 16 extends along the middle partition 15 . The outer peripheral edge of the middle partition 15 extends, the upper surface of the middle partition 15 can participate in defining the air outlet channel 12 , and the lower surface of the middle partition 15 can participate in defining the accommodation cavity 14 .

In some embodiments of the present application, as shown in Figures 1 and 3, the air duct member 1 also has an installation cavity 13. The installation cavity 13 is connected to each air outlet channel 12 respectively. The installation cavity 13 is also connected to the air inlet channel 11. For example, the installation cavity 13 is connected between the air inlet channel 11 and the air outlet channel 12. The installation cavity 13 is used to install the cooling fan 8, which further enriches the functions of the air duct part 1, so that the air duct part 1 can achieve diversion while , to facilitate the installation of the cooling fan 8.

Of course, the cooling fan 8 may not be installed in the installation cavity 13 of the air duct member 1. For example, the air duct member 1 may be located on the outlet side of the cooling fan 8.

Optionally, as shown in Figures 1 and 3, the cooling fan 8 is a turbine fan, and the air outlet channel 12 is connected to the peripheral wall of the installation cavity 13, so that the outlet air of the turbine fan flows smoothly to the air outlet channel 12, and the turbine fan can It outputs greater air volume while occupying less space and improves the heat dissipation effect. The installation cavity 13 may be formed on the first side of the air duct member 1, and the accommodation cavity 14 may be formed on the second side of the air duct member 1. The accommodation cavity 14 may include a first accommodation cavity 141 and a second accommodation cavity 142. The first accommodation cavity 141 is arranged opposite to the installation cavity 13 to facilitate the first accommodation cavity 141 to accommodate the motor of the cooling fan 8 .

In some embodiments, as shown in FIGS. 1 and 3 , a first communication opening 13 a and a second communication opening 13 b are formed on the peripheral wall of the installation cavity 13 . The first communication opening 13 a and the second communication opening 13 b are formed along the edges of the installation cavity 13 . Radially oppositely arranged, the first air outlet channel 121 is connected to the first communication opening 13a, and the second air outlet channel 122 is connected to the second communication opening 13b, so that the first air outlet channel 121 and the second air outlet channel 122 are respectively connected to Different communication openings on the peripheral wall of the installation cavity 13 are provided to better ensure the mutual independence of the first air outlet channel 121 and the second air outlet channel 122, and at the same time facilitate the airflow in the installation cavity 13 to be more smoothly distributed to the first outlet channel. The air channel 121 and the second air outlet channel 122 ensure that the first air outlet air channel 121 and the second air outlet air channel 122 are arranged back to back.

It should be noted that the circumferential direction of the installation cavity 13 is the circumferential direction of the cooling fan 8 , and the radial direction of the installation cavity 13 is the radial direction of the cooling fan 8 .

Of course, the first air outlet channel 121 and the second air outlet channel 122 can also be connected to the same communication opening on the peripheral wall of the installation cavity 13, such as the first communication opening 13a or the second communication opening 13b.

For example, as shown in FIG. 1 , there are multiple second air outlet channels 122 , and each second air outlet channel 122 is connected to the second communication port 13 b , which is beneficial to simplifying the processing of the installation cavity 13 . In some embodiments, as shown in Figure 1, the first communication port 13a and the second communication port 13b are arranged oppositely along the radial direction of the installation cavity 13. At this time, the first air outlet channel 121 and the second air outlet channel 122 can be basically They are arranged in opposite directions along the radial direction of the installation cavity 13; there are a plurality of second air outlet channels 122, and the plurality of second air outlet channels extend in different directions from the second communication opening 13b, so as to facilitate the plurality of second air outlet channels. 122 guides the airflow in different directions, which is beneficial to dispersing the air outflow from the air duct member 1 so as to better match the positions of the first group 3 to be radiated and the second group 4 to be radiated.

The household appliance according to the second embodiment of the present application includes a first heat dissipation group 3, a second heat dissipation group 4 and an air duct member 1. The household appliance is formed with a heat dissipation cavity. The first heat dissipation group 3 and the second heat dissipation group are The air duct components 1 are both arranged in a heat dissipation cavity. The heat dissipation cavity has an air inlet and an air outlet. The air inlet is connected to the air inlet channel 11 , and the air outlet is connected to the air outlet channel 12 . Among them, the air duct component 1 is the air duct component 1 according to the above-mentioned first aspect embodiment of the present application.

According to the household appliances according to the embodiments of the present application, by using the above-mentioned air duct component 1, the product volume, energy consumption, and product cost can be reduced while ensuring heat dissipation requirements.

In some embodiments of the present application, as shown in Figures 3 and 5, the heat dissipation cavity includes an air inlet cavity 5. The air inlet cavity 5 is connected to the air inlet and the air inlet channel 11 respectively. The air inlet cavity 5 is connected to the air inlet. Between the air inlet channel 11 and the circuit board, the circuit board is located in the air inlet cavity 5. When the cooling fan 8 of the household appliance is running, the air outside the household appliance can flow into the air inlet cavity 5 through the air inlet to dissipate heat to the circuit board. Then the airflow flows to the air inlet channel 11. Therefore, by arranging the circuit board in the air inlet cavity 5 , the functions of the air duct member 1 are further enriched.

Optionally, the household appliance is a microwave oven 100, in which case the circuit board can be an inverter circuit board of the microwave oven 100.

In some embodiments of the present application, as shown in FIGS. 5 to 7 , there are multiple second heat dissipation groups 4 , and the plurality of second heat dissipation groups 4 are respectively located on different sides of the household appliance, which facilitates the implementation of multiple second heat dissipation groups 4 . The dispersed arrangement of the two groups 4 to be heat dissipated is conducive to reducing the heat dissipation impact of each second group 4 to be heat dissipated on the remaining groups 4 to be heat dissipated, and to ensure the heat dissipation effect of each second group 4 to be heat dissipated; moreover, the first The group to be heat dissipated 3 and each second group to be heat dissipated 4 are respectively located on different sides of the household appliance, which further realizes the dispersion of components of the first group to be heat dissipated 3 and the plurality of second to be heat dissipated groups 4, which is conducive to reducing the number of heat dissipated by the first group to be heat dissipated. The heat dissipation effect between the group 3 and the second group 4 to be heat dissipated can ensure the heat dissipation effect of the first group 3 to be heat dissipated and the second group 4 to be heat dissipated at the same time.

Among them, an air guide 7 is provided between at least one second group 4 to be heat dissipated and the air duct member 1 to guide the air outlet of the air duct member 1 to the second group 4 to be heat dissipated. Then the air guide 7 can be defined The flow channel 70 is connected with the second air outlet channel 122, and the flow channel 70 extends toward the corresponding second heat dissipation group 4, thereby simplifying the structure of the air duct member 1 and making the air duct member 1 better. It can effectively match the microwave oven 100 with different structural layouts. For example, for the existing microwave oven 100, if the air duct part 1 is provided, the layout of the household appliances can be changed without much modification, ensuring the applicability of the air duct part 1.

For example, in the examples of Figures 5 and 7, there are three second heat dissipation groups 4, and the two second heat dissipation groups 4 located on the right and rear sides of the heat dissipation cavity are respectively provided between the air duct member 1 and the second heat dissipation group 4. There is an air guide part 7. Of course, the number and arrangement of the second heat dissipation groups 4 and the arrangement of the air guides 7 are not limited to this.

Optionally, the calorific value of the first to-be-cooled group 3 is greater than the calorific value of the second to-be-cooled group 4 . Regardless of whether there are one or more second to-be-cooled groups 4 , the calorific value of the first to-be-cooled group 3 is greater than the calorific value of each of the second to-be-cooled groups 4 . The calorific value of the second heat dissipation group 4 can easily reduce the heat dissipation influence of the first heat dissipation group 3 on the plurality of second heat dissipation groups 4 .

In some embodiments of the present application, as shown in Figures 5, 7 and 8, the second heat dissipation group 4 includes a plurality of heat dissipation parts, and the air guide 7 has at least one flow channel 70, and each flow channel 70 There are one or more air outlets 70a, and the air outlets 70a are arranged corresponding to the components to be heat dissipated, then one air outlet 70a can correspond to one or more components to be heat dissipated, or multiple air outlets 70a can correspond to multiple components to be heat dissipated, so that One air guide 7 can meet the heat dissipation needs of multiple heat dissipation parts to effectively meet the heat dissipation needs of the entire microwave oven 100 .

For example, in the examples of Figures 5, 7 and 8, an air guide 7 is provided between the second heat dissipation group 4 located on the right side of the heat dissipation cavity and the air duct member 1, and the air guide member 7 is located on the right side of the heat dissipation cavity. The second heat dissipation group 4 has five heat dissipating parts, and the air guide member 7 has two flow channels 70 . One of the flow channels 70 has one air outlet 70 a , and the other flow channel 70 has two air outlets 70 a . As mentioned above, The airflow in one of the flow channels 70 can dissipate heat for one component to be heat-dissipated, and the airflow in the other flow channel 70 can dissipate heat to the remaining four components to be heat-dissipated, so that the air guide 7 can better communicate with the second component to be heat-dissipated. The installation positions of the plurality of heat dissipation components of the heat dissipation group 4 match.

Of course, the second heat dissipation group 4 can also have one heat dissipation member; for example, in the examples of FIGS. 5 and 7 , there is a gap between the second heat dissipation group 4 located at the rear side of the heat dissipation cavity and the air duct member 1 . There is an air guide member 7 , and there is one heat dissipation member of the second heat dissipation group 4 located at the rear side of the heat dissipation cavity. The air guide member 7 has a flow channel 70 , and the flow channel 70 has an air outlet 70 a .

In some embodiments of the present application, as shown in Figures 4-6, the household appliance includes an outer shell 6 and an inner shell 2. The inner shell 2 is provided within the outer shell 6, and the inner shell 2 and the outer shell 6 jointly define a heat dissipation cavity; The inner shell 2 includes a top plate, a bottom plate 21, and a back plate 23 and side plates 22 connected between the top plate and the bottom plate 21. The first heat dissipation group 3 and the air duct member 1 are both located on the bottom plate 21, and one of the second heat dissipation groups 4 is provided on the back plate 23, and the remaining second groups 4 to be heat dissipated are provided on the corresponding side plates 22, so as to realize a rational layout of household appliances, and at the same time to facilitate the layout of the first group 3 to be heat dissipated and the plurality of second groups 4 to be heat dissipated. Dispersion is beneficial to improving the heat dissipation effect of the plurality of second heat dissipation groups 4.

It can be understood that there are multiple side plates 22 , for example, there are two side plates 22 , and the two side plates 22 are respectively located on the left and right sides of the back plate 23 . For example, there are two second heat dissipation groups 4, and another second heat dissipation group 4 can be provided on one of the plurality of side plates 22; or, there are three or more second heat dissipation groups 4, The above-mentioned remaining second heat dissipation groups 4 can be respectively provided on different side plates 22 .

For example, in the examples of FIGS. 4-7 , the household appliance is a microwave oven 100. The inner shell 2 defines a cooking cavity. The inner shell 2 includes four side plates 22, so that the cooking cavity is formed into a hexahedral cavity structure. The second heat dissipation is to be There may be three groups 4. One of the second groups 4 to be heat dissipated is located at the bottom of the microwave oven 100. The second group 4 to be heat dissipated is fixed on the bottom plate 21. One of the other two second groups 4 to be heat dissipated is located in the microwave oven 100. On the right side of the microwave oven 100, the second heat dissipation group 4 can be fixed on the side plate 22 on the right side. Another second heat dissipation group 4 is located on the rear side of the microwave oven 100. The second heat dissipation group 4 can be fixed on the right side of the microwave oven 100. on the side panel 22 on the rear side. Among them, the air duct member 1 is also located at the bottom of the microwave oven 100 and is fixed on the bottom plate 21 to facilitate the installation of the air duct member 1 and to ensure that the air duct member 1 avoids the cooking cavity of the microwave oven 100. The cooking cavity frees up enough space to make the microwave oven 100 more compact.

Among them, the second heat dissipation group 4 located on the lower side of the cooking cavity includes a filter plate 42, the second heat dissipation group 4 located on the rear side of the cooking cavity includes a hot air blower 41, and the second heat dissipation group 4 located on the right side of the cooking cavity includes a tester. temperature device 43, micro switch 44 and light source 45.

In some embodiments, the first heat dissipation group 3 includes one or more heat dissipation components, and the second heat dissipation group 4 includes one or more heat dissipation components, so the air duct member 1 can better match the different features of the microwave oven 100 . The structural layout effectively meets the heat dissipation needs of the entire microwave oven 100. For example, the household appliance is a cooking utensil with a microwave cooking function. The first heat dissipation group 3 includes a microwave generator, and the second heat dissipation group 4 includes a fan, a filter plate 42, a micro switch 44, a temperature measurement device 43, a lighting device and at least one of the camera devices.

It can be understood that the functions of the first heat dissipation group 3 and the second heat dissipation group 4 in household appliances are well known to those skilled in the art, and will not be described again here.

Optionally, as shown in FIG. 5 , taking the household appliance as a microwave oven 100 as an example, and the first heat dissipation group 3 includes at least one of a frequency converter 31 and a magnetron 32 , the first heat dissipation group 3 may include a frequency converter. 31. Either the first group to be heat dissipated 3 includes a magnetron 32, or the first group to be heat dissipated 3 includes a frequency converter 31 and a magnetron 32; the second group to be heat dissipated 4 includes a hot air fan 41, a filter plate 42, and a temperature measuring device. 43. At least one of the micro switch 44, light source 45 and camera device, then the second heat dissipation group 4 includes a hot air fan 41, a filter plate 42, a temperature measuring device 43, a micro switch 44, a light source 45 and a camera device. One of them, or the second group 4 to be heat dissipated, includes at least two of a hot air fan 41, a filter plate 42, a temperature measuring device 43, a micro switch 44, a light source 45 and a camera device.

Among them, the hot air fan 41 can blow the air flow heated by the heating component of the microwave oven 100 into the cooking cavity to achieve convection heating, so as to facilitate the hot air baking function of the microwave oven 100, for example, to facilitate the microwave oven 100 to achieve an air frying effect. The temperature measuring device 43 It can be used to measure the temperature in the cooking cavity or the temperature of the food in the cooking cavity, such as an infrared sensor. The light source 45 can be an LED light, etc. There are three micro switches 44, and the light source 45 is located on the three micro switches 44 and between the temperature measuring devices 43.

It can be understood that when there are multiple second heat dissipation groups 4, the hot air blower 41, the filter plate 42, the temperature measurement device 43, the micro switch 44 and the light source 45 can be assigned to the corresponding second heat dissipation group 4, respectively. In order to achieve good matching between the plurality of heat dissipation components and the second air outlet duct 122 . For example, the hot air fan 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 on the right side of the microwave oven 100. The second heat dissipation group 4 can be three. One of the second heat dissipation groups 4 includes a hot air fan 41, one of the other two second heat dissipation groups 4 includes a filter plate 42, and the other second heat dissipation group 4 includes a temperature measuring device 43 and a micro switch. 44 and light source 45.

Other structures and operations of household appliances according to embodiments of the present application are known to those of ordinary skill in the art and will not be described in detail here.

In the description of this application, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inside", "Outside", "Clockwise", "Counterclockwise", "Axis" The orientation or positional relationship indicated by "radial direction", "circumferential direction", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply the device or device referred to. Elements must have a specific orientation, be constructed and operate in a specific orientation and therefore are not to be construed as limitations on the application. In addition, features defined as “first” and “second” may explicitly or implicitly include one or more of these features. In the description of this application, unless otherwise stated, "plurality" means two or more.

In the description of this application, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connection, or integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood on a case-by-case basis.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" or the like is intended to be incorporated into the description of the implementation. An example or example describes a specific feature, structure, material, or characteristic that is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present application have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principles and purposes of the present application. The scope of the application is defined by the claims and their equivalents.

Claims

An air duct piece, wherein the air duct piece has connected air inlet channels and air outlet channels, and the air outlet channels are multiple and include a first air outlet channel and a second air outlet channel arranged back to back, The air out of the first air outlet channel is suitable for blowing to the first group to be heat dissipated, and the air out of the second air outlet channel is suitable to blow to the second group to be heat dissipated. The first group to be heat dissipated and the The second heat dissipation groups are respectively located at different positions.
The air duct member according to claim 1, wherein there are multiple second air outlet channels and second heat dissipation groups, and the air outlet of each second air outlet channel is suitable for blowing to one The second group to be heat dissipated.
The air duct piece according to claim 1 or 2, wherein the air duct piece has a first side and a second side arranged oppositely, the air outlet channel is formed on the first side, and the second side An accommodating cavity is formed, and the accommodating cavity is used to accommodate at least a circuit board installed on the air duct member.
The air duct piece according to any one of claims 1 to 3, wherein the air duct piece also has an installation cavity, the installation cavity is respectively connected with each of the air outlet channels, and is used to install a cooling fan. .
The air duct component according to claim 4, wherein the cooling fan is a turbine fan, and the air outlet channel is connected to the peripheral wall of the installation cavity.
The air duct member according to claim 4 or 5, wherein the peripheral wall of the installation cavity is formed with a first communication opening and a second communication opening arranged oppositely along the radial direction of the installation cavity, and the first air outlet The channel is connected to the first communication port, and the second air outlet channel is connected to the second communication port.
The air duct member according to claim 6, wherein there are a plurality of second air outlet channels, and the plurality of second air outlet channels extend in different directions from the second communication opening.
A household appliance, which includes a first heat dissipation group, a second heat dissipation group and an air duct member according to any one of claims 1 to 7, the household appliance is formed with a heat dissipation cavity, and the first heat dissipation group is formed with a heat dissipation cavity. The group to be heat dissipated, the second group to be heat dissipated and the air duct member are all located in the heat dissipation cavity. The heat dissipation cavity has an air inlet and an air outlet. The air inlet is connected to the air inlet channel. The air outlet is connected with the air outlet channel.
The household appliance according to claim 8, wherein the heat dissipation cavity includes an air inlet cavity respectively connected with the air inlet and the air inlet channel, and the circuit board of the household appliance is provided in the air inlet cavity.
The household appliance according to claim 8 or 9, wherein the second heat dissipation groups are multiple and are located on different sides of the household appliance, and the first heat dissipation group and each second heat dissipation group are The heat dissipation groups are located on different sides of the household appliances,

Wherein, an air guide member is provided between at least one of the second groups to be heat dissipated and the air duct member to guide the air outlet of the air duct member to the corresponding second group to be heat dissipated.
The household appliance according to claim 10, wherein the calorific value of the first heat dissipation group is greater than the calorific value of each of the second heat dissipation groups.
The household appliance according to claim 11, wherein the second heat dissipation group includes a plurality of heat dissipation parts, the air guide part has at least one flow channel, and each of the flow channels has one or more air outlets. , the air outlet is arranged corresponding to the component to be heat dissipated.
The household appliance according to claim 11 or 12, wherein the household appliance includes an outer shell and an inner shell, the inner shell is provided in the outer shell, and together with the outer shell defines the heat dissipation cavity, the 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 member are both provided on the bottom plate, and one of the first heat dissipation groups is provided on the bottom plate. Two groups to be heat dissipated are provided on the back panel, and the remaining second groups to be heat dissipated are provided on the corresponding side panels.
The household appliance according to any one of claims 8-13, wherein the household appliance is a cooking utensil with a microwave cooking function, the first heat dissipation group includes a microwave generator, and the second heat dissipation group Including at least one of a fan, a filter board, a micro switch, a temperature measurement device, a lighting device and a camera device.