CN105877464A - Electric cooking appliance - Google Patents

Abstract

The invention discloses a cooking appliance, which comprises a base, and a first tuyere and a second tuyere connected to each other are formed on the base, wherein, above the base, there are: a coil plate; a power board, the power board is located Below the coil disk; a heat dissipation fan for guiding airflow to enter from one of the first air outlet and the second air outlet and discharge from the other after flowing through the coil disk and the power board, the The heat dissipation fan is arranged adjacent to the first tuyere, and the heat dissipation fan is arranged below the coil disk and on one side of the power board, and the axis of the heat dissipation fan faces the The power strip is tilted. According to the cooking appliance in the embodiment of the present invention, the airflow entering the bottom of the cooking appliance can be facilitated to flow through the coil plate and the power board. In addition, the configuration of each component can be made reasonable, and the space utilization rate is improved.

Description

cooking appliances

technical field

The invention relates to the field of household appliances, in particular to a cooking appliance.

Background technique

The power board of current rice cooker products is relatively large and heat dissipation is required due to the high power consumption of the IGBT. This problem can be solved by installing the power board and fan upright. However, in order to ensure the heat dissipation effect, a certain amount of space needs to be occupied, making the product bulky.

Contents of the invention

The present invention aims to solve one of the technical problems in the related art at least to a certain extent. Therefore, the present invention provides a cooking appliance with high space utilization rate and good heat dissipation effect.

The cooking appliance according to the embodiment of the present invention includes a base, and a first air port and a second air port communicating with each other are formed on the base, wherein, above the base, there are: a coil plate; a power board, the power board is located Below the coil disk; a heat dissipation fan for guiding airflow to enter from one of the first air outlet and the second air outlet and discharge from the other after flowing through the coil disk and the power board, the The heat dissipation fan is arranged adjacent to the first tuyere, and the heat dissipation fan is arranged below the coil disk and on one side of the power board, and the axis of the heat dissipation fan faces the The power strip is tilted.

According to the cooking appliance of the embodiment of the present invention, the heat dissipation fan is arranged under the coil disk and on one side of the coil disk and inclined towards the power board, so that the airflow entering the bottom of the cooking appliance can flow through the coil disk and the power board conveniently. In addition, It can also make the configuration of each component reasonable and improve the utilization rate of space.

In addition, the cooking appliances according to the above-mentioned embodiments of the present invention may also have the following additional technical features:

According to an embodiment of the present invention, a fixed support is further provided above the base, at least a part of the fixed support is provided below the coil disk, and the power board and the cooling fan are fixed on the fixed on the bracket.

According to an embodiment of the present invention, a first guide channel for guiding the airflow to the coil disk is formed above the fixing bracket, and a first guide channel for guiding the airflow to the coil disk is formed below the fixing bracket. As for the second guide channel on the power board, the ends of the first guide channel and the second guide channel are opposite to the cooling fan.

According to an embodiment of the present invention, the first air outlet is an air inlet and the second air outlet is an air outlet, and the fixed bracket is provided with a A splitter plate for splitting the flow, the end of the splitter plate is opposite to the cooling fan.

According to an embodiment of the present invention, a turning plate is provided on the fixing bracket, and the turning plate is spaced from the splitter plate and defines a guiding channel toward the first flow guiding channel.

According to an embodiment of the present invention, the fixing bracket is provided with a directional air channel for guiding the airflow to the periphery of the coil disk.

According to an embodiment of the present invention, the fixed bracket is provided with a water-retaining partition, and the water-retaining partition surrounds a water receiving tank for receiving water dripping from the coil plate.

According to an embodiment of the present invention, the fixing bracket is integrally formed.

According to an embodiment of the present invention, a sloping plate substantially perpendicular to the axis of the cooling fan is formed on the base, the sloping plate is adjacent to and opposite to the cooling fan, and the first air outlet At least a portion is formed on the swash plate.

According to an embodiment of the present invention, one of the first air outlet and the second air outlet is an air inlet and the other is an air outlet, at least a part of the base is a corrugated board, and the first air outlet and the air inlet in the second air outlet are formed on the corrugated plate body.

According to an embodiment of the present invention, the first air outlet is an air inlet and the second air outlet is an air outlet, and a stop rib is provided on the base, and the stop rib is arranged adjacent to the first air outlet. One side of the power board, and at least a part of the upper surface of the stop rib is inclined downward toward the power board.

Description of drawings

Fig. 1 is a schematic diagram of a cooking appliance according to one embodiment of the present invention.

Fig. 2 is an exploded schematic diagram of a cooking appliance according to an embodiment of the present invention.

Fig. 3 is a partial schematic diagram of a cooking appliance according to an embodiment of the present invention, wherein the arrows show the direction of the heat dissipation airflow.

Fig. 4 is a schematic diagram of a fixing bracket of a cooking appliance according to an embodiment of the present invention.

Fig. 5 is a sectional view of a fixing bracket of a cooking appliance according to an embodiment of the present invention.

Fig. 6 is a schematic diagram of a base of a cooking appliance according to an embodiment of the present invention.

Fig. 7 is a sectional view of a base of a cooking appliance according to an embodiment of the present invention.

Reference signs: cooking appliance 100, base 1, coil plate 2, power board 3, fixed bracket 4, cooling fan 5, first air port 101, second air port 102, inclined plate 11, stop rib 12, stop rib The upper surface 121 of the bar 12 , the first guide channel 401 , the second guide channel 402 , the guide channel 403 , the directional air channel 404 , the water receiving tank 405 , the diverter plate 41 , the turning plate 42 , and the water-retaining partition 43 .

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

The cooking appliances of the present invention can be cooking appliances such as electric rice cookers and induction cookers.

As shown in FIGS. 1 to 3 , a cooking appliance 100 according to an embodiment of the present invention includes a base 1 on which a first air outlet 101 and a second air outlet 102 communicating with each other are formed, wherein the first air outlet 101 and the second air outlet 101 One of the tuyere 102 is an air inlet, and the other of the first tuyere 101 and the second tuyere 102 is an air outlet. The top of the base is provided with: a coil disk 2, a power board 3 and a cooling fan 5.

Specifically, the power board 3 is located under the coil disk 2 . The heat dissipation fan 5 is arranged adjacent to the first tuyere 101, and the heat dissipation fan 5 is arranged below the coil disk 2 and is positioned at one side of the power supply board 3, and the axis of the heat dissipation fan 5 is inclined toward the power supply board 3 in the direction from bottom to top (i.e. As shown in FIG. 3 (inclined forward), the cooling fan 5 is used to guide the air flow, and make the air flow flow through the coil disk 2 and the power board 3 . In other words, the heat dissipation fan 5 is used to guide the airflow to enter from one of the first air outlet 101 and the second air outlet 102 and to discharge from the other after flowing through the coil disk 2 and the power board 3, that is to say, when the heat dissipation fan 5 is driven Under the action, the airflow enters the bottom of the cooking appliance 100 from the air inlet, then passes through the power board 3 and the coil plate 2, and then is discharged from the air outlet, thereby taking away the heat on the coil plate 2 and the power board 3, wherein the first air outlet One of the first tuyere 101 and the second tuyere 102 is an air inlet, and the other of the first tuyere 101 and the second tuyere 102 is an air outlet.

According to the cooking appliance 100 of the embodiment of the present invention, the heat dissipation fan 5 is arranged under the coil disk 2 and on one side of the coil disk 2 and inclined towards the power board 3, so that the airflow entering the bottom of the cooking appliance 100 can flow through the coil disk conveniently. 2 and the power supply board 3, in addition, the configuration of each component can also be made reasonable, which improves the utilization rate of space.

2 to 5, in some embodiments of the present invention, a fixed support 4 is provided above the base 1, at least a part of the fixed support 4 is provided below the coil disk 2, and the power board 3 and the cooling fan 5 are fixed Set on the fixed bracket 4. Using the fixing bracket 4 to fix the power board 3 can make the structure of the power board 3 stable, avoid affecting the operation or failure of the cooking appliance 100 due to shaking and falling off of the power board 3, and improve the safety and stability of the cooking appliance 100 .

In addition, the power board 3 is fixed under the fixed bracket 4, and the power board 3 and the coil disk 2 are separated by the fixed bracket 4, thereby reducing the heat influence between the coil disk 2 and the power board 3, thereby improving heat dissipation effect and cooling efficiency.

Those skilled in the art can understand that the power board 3 can also be directly fixed on the coil disk 2 or the base 1 .

Further, as shown in FIG. 3 , a first guide channel 401 for guiding the airflow to the coil disk 2 is formed above the fixed bracket 4 , and a first guide channel 401 for guiding the airflow to the power board 3 is formed under the fixed bracket 4 . The ends of the second air guide channel 402 on the top, the first air guide channel 401 and the second air guide channel 402 are all opposite to the heat dissipation fan 5, so that the air flow can flow through the first air guide channel 401 when the heat dissipation fan 5 is driven. and the second guide channel 402 . The airflow can be quickly guided to the power board 3 and the coil plate 2 , so that the airflow can take away the heat from the coil plate 2 and the power board 3 , and improve the heat dissipation efficiency of the bottom of the cooking appliance 100 .

In addition, the airflow used to dissipate heat from the coil disk 2 and the airflow used to dissipate heat from the power supply board 3 flow along the first flow guiding channel 401 and the second flow guiding channel 402 respectively, so that the airflow can quickly dissipate the heat from the coil disk 2 and the cooling fan. 5 to dissipate heat, and reduce or avoid the interaction between these airflows, so that the heat dissipation effect and heat dissipation efficiency can be improved.

Advantageously, referring to FIGS. 3 to 5 , the first air outlet 101 is an air inlet and the second air outlet 102 is an air outlet. The splitter plate 41, the end of the splitter plate 41 is opposite to the cooling fan 5. During the working process of the cooking appliance 100, driven by the cooling fan 5, the air flow enters the bottom of the cooking appliance 100 from the first air outlet 101. The airflow at the bottom will be divided by the splitter plate 41, and part of the divided airflow will flow along the first flow guide channel 401, while the other part will flow along the second flow guide channel 402, so that the divided airflow can respectively flow to the power supply The plate 3 and the coil plate 2 dissipate heat, so that the heat dissipation effect and heat dissipation efficiency of the cooking appliance 100 can be effectively improved.

Further, as shown in FIG. 3 to FIG. 5 , a turning plate 42 is provided on the fixing bracket 4 , and the turning plate 42 is spaced apart from the splitter plate 41 and defines a guide channel 403 facing the first guide channel 401 . The air flow can enter the first air guide channel 401 along the guide channel 403 to dissipate heat from the coil disk 2, so that a part of the air flow can flow along a predetermined track, increasing the flow rate of the air flow entering the first air guide channel 401 , improve heat dissipation efficiency and heat dissipation effect.

Advantageously, as shown in FIG. 4 , the fixed bracket 4 is provided with a directional air channel 404 for guiding the airflow to the periphery of the coil disk 2 . In this way, the airflow can flow through the periphery of the coil disk 2 , so that the airflow can dissipate heat on the periphery of the coil disk 2 , further improving the heat dissipation effect and efficiency of the coil disk 2 . This prevents the operation of the coil disk 2 from being affected by the excessively high peripheral temperature of the coil disk 2 and provides a better operating environment for the coil disk 2 .

Preferably, referring to FIG. 3 to FIG. 5 , a water-retaining partition 43 is provided on the fixed bracket, and the water-retaining partition 43 encloses a water receiving tank 405 for receiving water dripping from the coil disk 2 , so that the coil disk 2 can be received. In particular, the water dripping from the coil pan support prevents the water dripping from the coil pan from spreading everywhere under the action of the airflow, affecting the safety and stability of electrical devices, and increases the service life of the cooking appliance 100 .

Further, the fixing bracket 4 is integrally formed. The molding of the fixing bracket 4 is easy and the molding efficiency is high, and the sealing effect of the fixing bracket 4 on the upper and lower layers can be effectively improved, and the influence of water droplets on the power supply board 3 can be reduced or avoided.

Preferably, the fixing bracket 4 is integrally injection molded.

As shown in Figure 3, in some embodiments of the present invention, a sloping plate 11 substantially perpendicular to the axis of the cooling fan 5 is formed on the base 1, the sloping plate 11 is adjacent to the cooling fan 5 and opposite to the cooling fan 5, and the first tuyere At least a part of 101 is formed on the swash plate 11 . Make the direction of the first tuyere 101 substantially coincident with or horizontal to the axis of the heat dissipation fan 5 to facilitate the airflow and improve the circulation efficiency of the airflow, thereby improving the heat dissipation effect and efficiency of the coil disk 2 and the power board 3 .

As shown in FIG. 3 , in some embodiments of the present invention, one of the first air outlet 101 and the second air outlet 102 is an air inlet and the other is an air outlet, and at least a part of the base 1 is a corrugated board (not shown). out), and the air inlets in the first air outlet 101 and the second air outlet 102 are formed on the corrugated plate body. The plate body of the air inlet is in a non-planar shape, so that the air inlet is not easy to be blocked, so as to ensure the heat dissipation effect and prevent problems such as poor heat dissipation caused by the blocked air inlet.

Wherein, the wavy plate body means that at least a part of the plate body is in the form of ups and downs.

In addition, a plurality of protrusions can also be arranged at intervals on the outer surface of the base 1 adjacent to the air inlet.

Referring to Fig. 3, Fig. 6 and Fig. 7, in some embodiments of the present invention, the first air port 101 is the air inlet and the second air port 102 is the air outlet, the base is provided with a stop rib 12, the stop rib 12 It is arranged on the side of the first tuyere 101 adjacent to the power board 3, and at least a part of the upper surface 121 of the stop rib 12 is directed downward toward the power board 3 (that is, to the right as shown in FIG. 7 ). tilt. Driven by the heat dissipation fan 5, the airflow enters the cooking appliance 100 from the first tuyere 101, and a part of the airflow will blow to the power board 3, and the airflow will flow downward after passing through the power board 3. There are stop ribs 12, and the airflow flows forward under the action of the upper surface 121 of the stop ribs 12, so that the airflow flows in a direction away from the first tuyere 101 (that is, in the forward direction as shown in FIG. 3 ), Avoid or reduce the hot air discharged from the cooking appliance 100 from directly entering the cooking appliance 100 through the first air outlet 101 .

The invention discloses a heat dissipation structure of an electromagnetic heating cooking appliance 100. By arranging a power board 3 (including an IGBT) on the lower side of a coil plate 2 and isolating it through a fixing bracket 4, the space under the cooking appliance 100 is fully utilized to enable cooking The structure of the electrical appliance 100 is more compact; by designing the structure of the fixed bracket 4 and the structure of the base 1, the cold wind can enter from the outside of the appliance, and flow through the air duct of the fixed bracket 4 to cool down the IGBT and the coil disk 2, solving the problem of the power board 3 1. The temperature rise problem directly below the coil disk 2.

Specifically, in order to save product space in the present invention, the power board 3 (IGBT) is placed under the coil disk 2 and fixed by the fixing bracket 4 . At the same time, the heat dissipation fan 5 is installed on the fixed bracket 4 to realize heat dissipation to the power board 3 (including the IGBT); the base 1 is installed under all parts to protect each part, and an air port is designed to realize the flow of wind.

The heat dissipation fan 5 is installed on the fixed support 4 and is inclined at a certain angle. The fixed support 4 is also provided with a shunt structure, so that the airflow formed by the heat dissipation fan 5 can flow in layers up and down the fixed support 4 respectively, and at the same time, the coil disk 2 and the power supply Plate 3 dissipates heat.

The base 1 is also provided with a slope to prevent the hot air from flowing back, so that the hot air passing through the IGBT is discharged through the heat dissipation port of the base 1 and away from the heat dissipation fan 5 .

The design of the air inlet (wave shape) makes the air inlet not easy to be blocked, so as to ensure the heat dissipation effect and prevent the air inlet from being blocked and causing poor heat dissipation.

The fixed support 4 is also provided with a water-retaining partition 43, and the middle part of the water-retaining partition 43 forms a water receiving tank 405, which is used to receive water dripping from the middle part of the coil disk support, and the water-retaining partition 43 can prevent dripping from the coil disk support. The water droplets spread everywhere under the action of airflow, which affects the safety performance of electrical devices.

When the electromagnetic heating device works, the power board 3 (comprising the IGBT) and the coil disk 2 will generate heat by themselves, and the heat dissipation fan 5 will start to make the wind flow. The wind flows in through the air inlet of the base 1 , passes through the air channel shunt structure of the fixed bracket 4 , and blows air to the power board 3 and the coil disk 2 respectively for heat dissipation. By blowing in cold air and discharging hot air, the cooling and heat dissipation of the power board 3 and the coil disk 2 are realized, and the volume of the product is reduced.

In general, the present invention adjusts the installation position of the power board 3 by designing, and utilizes the remaining space at the bottom to reduce the volume of the product; at the same time, by designing the support structure of the heat dissipation fan 5, the power board 3 and the coil disk 2 can be installed at the same time. To dissipate heat and provide a structure to prevent hot air from flowing back, so as to achieve the purpose of cooling the coil disk 2 and the IGBT.

In addition, the first air outlet can be used as the air inlet, and the second air outlet can be used as the air outlet, or the fan can be reversed, and the cooling mode of blowing cold air can be changed to the way of absorbing hot air to flow away and dissipate heat, which can also achieve the effect of heat dissipation.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial", The orientation or positional relationship indicated by "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or element Must be in a particular orientation, be constructed in a particular orientation, and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless specifically defined otherwise.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise specified limit. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the present invention, unless otherwise clearly specified and limited, the first feature may be in direct contact with the first feature or the first and second feature may be in direct contact with the second feature through an intermediary. touch. Moreover, "above", "above" and "above" the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. "Below", "beneath" and "beneath" the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structure, material or characteristic is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

Claims (11)

1. a cooking appliance, it is characterised in that include base, described base is formed the first air port of being interconnected and Second air port, wherein, being arranged over of described base:

Coil panel；

Power panel, described power panel is positioned at below described coil panel；

For guiding an air-flow entrance from described first air port and described second air port and flowing through described coil panel and institute The cooling fan discharged from another after stating power panel, described cooling fan is arranged adjacent to described first air port, and described heat radiation Blower fan is located at the lower section of described coil panel and is positioned at the side of described power panel, and the axis of described cooling fan is from top to bottom Side tilts upwardly toward described power panel.

Cooking appliance the most according to claim 1, it is characterised in that described base be also arranged above fixed support, The described support bracket fastened lower section being located at described coil panel at least partially, and described power panel and described cooling fan be installed in On described fixed support.

Cooking appliance the most according to claim 2, it is characterised in that described support bracket fastened be formed above for will Air flow guiding is to the first flow-guiding channel of described coil panel and described support bracket fastened formed below for being arrived by air flow guiding The second flow-guiding channel on described power panel, the end of described first flow-guiding channel and described second flow-guiding channel all dissipates with described Hot-air blower is relative.

Cooking appliance the most according to claim 3, it is characterised in that described first air port is air inlet and the second air port For air outlet, described fixed support is provided with for making air-flow divide towards described first flow-guiding channel and described second flow-guiding channel The flow distribution plate of stream, the end of described flow distribution plate is relative with described cooling fan.

Cooking appliance the most according to claim 4, it is characterised in that described fixed support is provided with deflecting plate, described Between deflecting plate with described flow distribution plate spaced apart and limit the guide channel towards described first flow-guiding channel.

Cooking appliance the most according to claim 2, it is characterised in that described fixed support is provided with for being led by air-flow To described coil panel week edge orientation air channel.

Cooking appliance the most according to claim 2, it is characterised in that described fixed support is provided with water retaining separater, institute State water retaining separater and surround the water receiving tank of the water of drippage on receiving coil dish.

8. according to the cooking appliance according to any one of claim 2-7, it is characterised in that described fixed support is integrally formed.

Cooking appliance the most according to claim 1, it is characterised in that be formed on described base and described cooling fan The swash plate of axis less perpendicular, described swash plate is adjacent to described cooling fan and relative with described cooling fan, described first wind Being formed at least partially on described swash plate of mouth.

Cooking appliance the most according to claim 1, it is characterised in that in described first air port and described second air port One be air inlet and another be air outlet, at least some of undulate plate body of described base, and described first wind Air inlet in mouth and described second air port is formed on described waveform plate body.

11. according to the cooking appliance according to any one of claim 1-7, it is characterised in that described first air port is air intake Mouth and the second air port are air outlet, and described base is provided with backstop rib, and described backstop rib is located at the neighbour in described first air port The side of nearly described power panel, and the upper surface of described backstop rib is at least some of on the direction towards described power panel Downward-sloping.