CN114271687A

CN114271687A - Heat radiation fan, bottom plate assembly and cooking utensil

Info

Publication number: CN114271687A
Application number: CN202011054757.0A
Authority: CN
Inventors: 胡广川; 朱之飞; 陈茂顺; 邓雁青
Original assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2022-04-05
Anticipated expiration: 2040-09-27
Also published as: CN114271687B

Abstract

The invention relates to the technical field of household appliances, in particular to a heat dissipation fan, a bottom plate assembly and a cooking appliance. The heat dissipation fan comprises an impeller, a motor and a motor support, wherein the impeller is connected with an output shaft of the motor, the motor is arranged on the motor support, and at least two air outlet ends are arranged on the motor support. According to the heat dissipation fan, the motor support is provided with the at least two air outlet ends, cooling air flows formed by the impeller under the driving action of the motor can flow out through the at least two air outlet ends, so that the cooling air flows are output towards different spatial positions, and further, components at multiple spatial positions are simultaneously cooled, the heat dissipation effect of the heat dissipation fan is improved, and the reliable operation of electrical components in the bottom plate component is ensured.

Description

Heat radiation fan, bottom plate assembly and cooking utensil

Technical Field

The invention relates to the technical field of household appliances, in particular to a heat dissipation fan, a bottom plate assembly and a cooking appliance.

Background

As is well known, a cooking appliance cooks food by means of a high-temperature environment of a cavity, so that in a working process, it is difficult to avoid a fault phenomenon caused by thermal shock of an electrical component in the cooking appliance due to the high-temperature cavity, and moreover, a part of the electrical component, such as a magnetron, a frequency converter, a power panel and the like, has a large self-heating value and needs to be radiated in time to ensure normal work of the electrical component. In order to solve the related problems, passive heat dissipation technology is adopted in many cooking appliances, for example, heat dissipation holes are added on a shell and a bottom plate, the heat exchange area is increased, or a mode of wrapping a heat insulation material outside a cavity is adopted, so that the influence of high-temperature heat on an electrical part is reduced. Of course, some active heat dissipation technologies are adopted, and a single or multiple fans are used to dissipate heat of individual components in a local space through independent heat dissipation air ducts.

However, the above-mentioned prior art structure increases the structural complexity of the heat dissipation air duct, and the components at multiple spatial positions cannot be simultaneously dissipated by the same motor.

Disclosure of Invention

The invention aims to at least solve the problem that components at a plurality of spatial positions cannot be simultaneously radiated by the same motor. This object is achieved in the following manner.

The invention provides a heat radiation fan, which comprises:

an impeller;

the impeller is connected with an output shaft of the motor;

the motor support, the motor is located on the motor support, be equipped with two at least air-out ends on the motor support.

According to the heat dissipation fan, the motor support is provided with the at least two air outlet ends, cooling air flows formed by the impeller under the driving action of the motor can flow out through the at least two air outlet ends, so that the cooling air flows are output towards different spatial positions, and further, components at multiple spatial positions are simultaneously cooled, the heat dissipation effect of the heat dissipation fan is improved, and the reliable operation of electrical components in the bottom plate component is ensured.

In addition, the cooling fan according to the present invention may further have the following additional technical features:

in some embodiments of the present invention, the at least two air outlet ends include a first air outlet end and a second air outlet end, and the first air outlet end and the second air outlet end extend along different directions.

In some embodiments of the present invention, a cross-sectional area of the first outlet end is larger than a cross-sectional area of the second outlet end.

In some embodiments of the present invention, the motor bracket includes a support plate, a first enclosing plate and a second enclosing plate, the first enclosing plate and the second enclosing plate are respectively disposed oppositely along an edge of the support plate, an opposite end of the first enclosing plate and an opposite end of the second enclosing plate form the first air outlet end, an opposite end of the first enclosing plate and an opposite end of the second enclosing plate form the second air outlet end, and a height dimension of the second air outlet end gradually decreases along an extending direction of the second air outlet end.

In some embodiments of the invention, the height dimension of the first shroud and the height dimension of the second shroud are both less than the height dimension of the impeller.

In some embodiments of the present invention, the motor bracket is provided with a vent hole disposed opposite to the impeller.

In some embodiments of the present invention, the impeller includes a blade mounting plate, a fixing ring, and a plurality of blades, one ends of the plurality of blades are annularly provided to the blade mounting plate along an edge position of the blade mounting plate, and the other ends of the plurality of blades are connected by the fixing ring.

In some embodiments of the invention, the width dimension of the retaining ring is less than or equal to the width dimension of the blade.

In some embodiments of the invention, the impeller is a centrifugal wind wheel.

Another aspect of the present invention also provides a floor assembly, including:

a bottom plate body;

the electrical component is arranged in the bottom plate body;

the heat dissipation fan is arranged in the bottom plate body and used for dissipating heat of the electrical component, wherein the heat dissipation fan is any one of the heat dissipation fans.

In some embodiments of the present invention, a first air inlet, a first air outlet and a second air outlet are disposed on the bottom plate body, a first air inlet channel is formed between the impeller and the first air inlet, a first air outlet channel is formed between the impeller and the first air outlet, a second air outlet channel is formed between the impeller and the second air outlet, a first air outlet end of the motor bracket extends toward the first air outlet channel, and a second air outlet end of the motor bracket extends toward the second air outlet channel.

In some embodiments of the present invention, the bottom plate body is further provided with a second air inlet, the second air inlet is disposed opposite to the impeller, and a second air inlet channel is formed between the impeller and the second air inlet.

In some embodiments of the present invention, a part of the electrical devices of the electrical component is disposed in the first air inlet channel, another part of the electrical devices of the electrical component is disposed in the first air outlet channel, and the heating power of the part of the electrical devices in the first air inlet channel is less than the heating power of the another part of the electrical devices in the first air outlet channel.

Another aspect of the present invention also provides a cooking appliance, including:

a cavity assembly;

a floor assembly disposed below the cavity assembly, wherein the floor assembly is according to any one of claims 11-13.

In some embodiments of the present invention, the cooking utensil further comprises a housing, and a containing space formed between the housing and the side wall of the cavity assembly is communicated with the second air outlet.

In some embodiments of the present invention, at least one of a furnace lamp, an infrared sensing device and a furnace door interlock switch is disposed in a containing space formed between the housing and the sidewall of the cavity.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. Wherein:

fig. 1 is a schematic view of the overall structure of a cooking appliance of the present application;

fig. 2 is an exploded view of the cooking appliance of the present application;

FIG. 3 is a schematic view of a base plate assembly (cover plate not connected to base) in an embodiment of the present application;

FIG. 4 is an exploded view of a base plate assembly (with the cover plate omitted) in an embodiment of the present application;

FIG. 5 is a schematic diagram illustrating the connection between a power cord and a backplane assembly according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a power cord in an embodiment of the present application;

FIG. 7 is a schematic view of a backplane assembly in an embodiment of the present application;

FIG. 8 is a schematic view of the interior of a base in an embodiment of the present application;

FIG. 9 is a schematic view of a base in an embodiment of the present application;

FIG. 10 is a schematic view of a cover plate in an embodiment of the present application;

FIG. 11 is a schematic view of the interior of a base in another embodiment of the present application;

FIG. 12 is a schematic view of a base in another embodiment of the present application;

FIG. 13 is a schematic view of a motor assembly in an embodiment of the present application;

FIG. 14 is a schematic view from another perspective of a motor assembly in an embodiment of the present application;

FIG. 15 is a schematic view from yet another perspective of a motor assembly in an embodiment of the present application;

fig. 16 is an exploded view of a motor assembly according to an embodiment of the present application;

FIG. 17 is a schematic view of an impeller in an embodiment of the present application;

fig. 18 is a schematic view of the interior of a base in yet another embodiment of the present application.

Reference numerals:

1: a cooking appliance;

100: a base plate assembly;

110: a bottom plate body;

111: base, 112: cover plate, 113: hand-held portion, 115: a wire passing port;

120: an accommodating chamber;

123: an installation part;

130: cooling fan, 131: impeller, 1311: a vane, 1312: blade mounting plate, 1313: fixing ring, 132: motor, 1321: motor body, 1322: output shaft, 133: motor support, 1331: vent, 1332: first air-out end, 1333: second air-out end, 1334: supporting plate, 1335: first shroud, 1336: second shroud, 1337: spindle hole, 1338: first mounting hole, 1339: a second mounting hole;

141: first air intake channel, 142: first air outlet passage, 143: first air intake, 1431: baffle, 1432: air inlet grille, 144: first outlet, 145: second air intake passage, 146: second air outlet channel, 147: second air intake, 148: a second air outlet;

150: a power line;

151: power cord body, 152: line-passing structure, 1521: a card slot;

160: a void-avoiding structure;

161: a limiting groove;

170: an accommodating cavity;

180: a water box assembly;

200: an electrical component;

210: a first electrical component;

211: a power panel;

220: a second electrical component;

221: filter plate, 222: a frequency converter;

230: a third electrical component;

231: a water pump;

300: a cavity assembly;

400: a door body assembly;

500: a box assembly.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1 and 2, a cooking appliance 1 according to an embodiment of the present application includes a base plate assembly 100 and a case assembly 500. Wherein, the bottom plate assembly 100 is used for providing a supporting function for the whole cooking utensil 1, and the box body assembly 500 of the cooking utensil 1 can be installed on the bottom plate body 100.

Further, the cooking appliance 1 further includes a cavity assembly 300, the cavity assembly 300 is formed inside the case assembly 500, and the cavity assembly 300 is used for providing a space for cooking food.

Further, the cooking appliance 1 further includes a door assembly 400, and the door assembly 400 is connected to the cabinet assembly 500 in a manner that the cavity assembly 300 can be opened or closed.

In one embodiment of the present application, the base plate assembly 100 includes a base plate body 110, a receiving cavity 120, and an electrical component 200, the receiving cavity 120 is formed inside the base plate body 110, the base plate body 110 is an insulating member, and the electrical component 200 is disposed in the receiving cavity 120. The electrical component 200 is mainly an electronic component group that enables the cooking appliance 1 to work normally and has a certain function, wherein the electronic component is, for example, a power panel 211, a frequency converter 222, a filter panel 221, and the like.

The bottom plate assembly 100 in this embodiment is not only used for providing a supporting function for the whole machine of the cooking appliance 1, but also provides an installation position for the electrical appliance assembly 200 of the cooking appliance 1, so that the electrical appliance assembly 200 and the bottom plate body 110 are integrated together, thereby changing the condition that each power device of the existing cooking appliance is installed at different positions of the whole machine, and thus, the number of installation modules of the cooking appliance 1 in the assembling process is favorably reduced, and the assembling efficiency is improved. In addition, in the prior art, the power device of the cooking appliance needs to be installed in the insulating box first, and then the insulating box is integrally installed on the whole machine, compared with the prior art, the bottom plate body 110 in the embodiment is an insulating member, and the electrical component 200 is directly installed in the accommodating cavity 200 inside the bottom plate body 110, so that the requirement on electrical safety can be met, the insulating box can be omitted, the number of parts of the whole machine is reduced, the production cost is reduced, and the production efficiency is improved.

Optionally, as shown in fig. 3 and 4, the electrical assembly 200 further includes a first electrical assembly 210, and the first electrical assembly 210 includes at least one electrical device commonly used in various cooking appliances, such as a power panel 211. The electrical assembly 200 further comprises at least one of a second electrical assembly 220 and a third electrical assembly 230, wherein the second electrical assembly 220 comprises at least one electrical device specific to the microwave cooking appliance, such as a filter plate 221, a frequency converter 222 (or transformer), a microwave generating module, etc., the microwave generating module in this example being a semiconductor microwave generator, and the third electrical assembly 230 comprises at least one electrical device specific to the steam cooking appliance, such as a water pump 231, a steam generator (not shown), etc. It should be noted that the frequency converter 222 and the transformer in the electric device dedicated to the microwave cooking appliance are alternatively arranged, the former is suitable for the frequency conversion type microwave cooking appliance, and the latter is suitable for the fixed frequency type microwave cooking appliance. In addition, it is understood that the microwave generating module may have different structures according to different microwave generating principles, for example, the microwave generating module may include a magnetron, a waveguide, and the like for a magnetron type microwave cooking appliance, and the microwave generating module may include a semiconductor microwave generator for a semiconductor type microwave cooking appliance.

Specifically, when the electrical component 200 includes the first electrical component 210 and the second electrical component 220, correspondingly, the cooking appliance 1 may be a microwave oven, a microwave oven all-in-one machine, or the like. For example, in one specific example, a power supply board 211, a filter board 221, a frequency converter 222 (or transformer), and a semiconductor microwave generator are provided in the accommodation chamber 120. In another specific example, a power supply board 211 and a filter board 221 are provided in the accommodation chamber 120. In another different example, a power supply board 211 and a frequency converter 222 (or transformer) are provided in the accommodation chamber 120. It is understood that in other examples, the electrical component 200 disposed in the accommodating cavity 120 may also be various combinations including a semiconductor microwave generator, which is not listed here.

When the electrical appliance assembly 200 includes the first electrical appliance assembly 210 and the third electrical appliance assembly 230, correspondingly, the cooking appliance 1 may be a steam box, a steam oven all-in-one machine, or the like cooking appliance having a steam function. For example, in one specific example, a power supply board 211, a water pump 231, and a steam generator are provided in the receiving chamber 120. In another specific example, a power supply board 211 and a water pump 231 are provided in the accommodation chamber 120. In another different example, a power supply board 211 and a steam generator are provided in the receiving chamber 120.

When the electrical component 200 includes the first electrical component 210, the second electrical component 220 and the third electrical component 230, correspondingly, the cooking appliance 1 may be a microwave-steam all-in-one machine, a microwave-steam oven all-in-one machine or the like having both a microwave function and a steam function. For example, in one specific example, a power supply board 211, a filter board 221, a frequency converter 222 (or transformer), a water pump 231, and a steam generator are provided in the housing chamber 120. In another specific example, a power supply board 211, a filter board 221, a water pump 231 and a steam generator are arranged in the accommodating cavity 120, wherein the filter board 221 can be replaced by a frequency converter 222 (or a transformer) to form another different combination mode. In another specific example, a power supply board 211, a filter board 221, a frequency converter 222 (or a transformer) and a water pump 231 are disposed in the accommodating chamber 120, wherein the water pump 231 can be replaced by a steam generator, thereby forming another different combination. In another specific example, the power supply board 211, the filter board 221 and the water pump 231 are disposed in the accommodating chamber 120, wherein the filter board 221 can be replaced by the frequency converter 222 (or a transformer), and the water pump 231 can be replaced by the steam generator, thereby forming different combinations. It is understood that in other examples, the electrical component 200 disposed in the accommodating cavity 120 may also be various combinations including a semiconductor microwave generator, which is not listed here.

Optionally, a plurality of mounting positions are formed in the accommodating cavity 120, each mounting position is used for mounting a corresponding electrical device, and the shape and volume of each mounting position can be set according to the specific electrical device to be mounted, that is, different mounting positions have certain differences in shape and volume, so that when the bottom plate assembly 100 is assembled, an assembler can quickly identify the mounting position corresponding to each electrical device, thereby improving the assembly efficiency. On the other hand, different mounting positions have certain differences in shape and volume, so that the situation that an assembler mounts the electric device at a wrong position can also be avoided, because the electric device cannot be matched with the mounting positions if the mounting positions corresponding to the electric device are not found. For example, if a specific mounting position in the accommodating cavity 120 is a power board mounting position, and the filter board 221 is erroneously mounted therein by an assembler, the filter board 221 cannot smoothly enter the power board mounting position due to shape mismatch or size mismatch, and thus, the error correction function is performed. Optionally, a plurality of mounting locations are formed in the accommodating cavity 120, each mounting location is used for mounting a corresponding electrical device, the shape and volume of each mounting location may be set according to a specific electrical device to be mounted, a mounting portion 123 is provided at the bottom of each mounting location, the mounting portion 123 is used for connecting with a corresponding electrical device, the mounting portion 123 may be, for example, a connecting hole or a connecting post with a connecting hole, the electrical device and the mounting portion 123 may be connected by a connecting member such as a bolt, and thus the electrical device is mounted on the corresponding mounting location.

In one example of the present embodiment, at least two ventilation openings communicating with the receiving cavity 120 are formed on the base plate body 110, and the ventilation openings communicate the receiving cavity 120 with the outside of the base plate body 110. All the electrical devices in the accommodating cavity 120 all generate heat during operation, and the arrangement of the vent enables the heat generated by all the electrical devices to be discharged out of the accommodating cavity 120, so that the heat dissipation and the temperature reduction of all the electrical devices are facilitated, and the stable maintenance working performance of all the electrical devices and the longer service life of all the electrical devices are facilitated.

In another example of the present embodiment, at least two ventilation openings communicating with the accommodating cavity 120 are formed on the bottom plate body 110, a heat dissipation fan 130 is disposed in the accommodating cavity 120, and the heat dissipation fan 130 is configured to form an airflow circulation inside and outside the accommodating cavity 120 so as to introduce external cold air into the accommodating cavity 120, and simultaneously, to discharge heat generated by each electric device in the accommodating cavity 120 in time by using the circulated airflow. In addition, the arrangement order of the electric devices can be optimized for better heat dissipation. Specifically, along the flowing direction of the air flow, the electric devices can be arranged in the order of the heating power from small to large, which has the advantage that the temperature rise amplitude of the cooling air is smaller after the cooling air passes through the electric device with smaller heating power, so that the cooling air still has better cooling effect when passing through the following electric device with larger heating power. In the following description, taking a case where the power supply board 211, the filter board 221, the frequency converter 222, the water pump 231, and the steam generator are disposed in the accommodating chamber 120 at the same time as an example, the above electric devices are arranged in the order of increasing heat generation power along the flow direction of the air flow. The layout after the arrangement of the electric devices is that the power supply board 211, the filter board 221, the frequency converter 222, the water pump 231, and the steam generator are sequentially arranged along the flow direction of the flow. In addition, when the cooking appliance 1 does not have the steam function, electric devices dedicated to the steam-based cooking appliance such as the water pump 231 and the steam generator may be omitted from the layout, and when the cooking appliance 1 does not have the microwave function, electric devices dedicated to the microwave-oven-based cooking appliance such as the filter plate 221 and the inverter 222 may be omitted from the layout.

In an example of the present embodiment, the bottom plate body 110 is a plastic piece or a ceramic piece, the plastic piece has a good insulating property, and can meet the requirement of electrical safety, and in addition, the plastic piece also has the characteristics of easy processing and forming, low cost, falling resistance, collision resistance, and the like. The ceramic piece also has good insulating property, and has the advantages of good brightness and wear resistance. It is understood that the bottom plate body 110 is not limited to a plastic or ceramic member, and may be made of an insulating material such as glass or mica.

In one example of the present embodiment, the base plate body 110 includes a base plate 111 and a cover plate 112, the cover plate 112 is coupled to a top of the base plate 111, and the cover plate 112 and the base plate 111 together define a receiving chamber 120. When the base plate assembly 100 in this example is assembled, the electrical component 200 and the base 111 may be assembled together, and then the cover plate 112 and the base 111 are connected to form the base plate assembly 100. It is understood that the base 111 and the cover 112 are both made of insulating materials, so that the electrical component 200 disposed in the receiving cavity 120 can satisfy electrical safety requirements.

Further, the cover plate 112 and the base 111 can be connected by screws, on one hand, the screws are commonly used connecting pieces and have low cost, and on the other hand, the screw connection mode not only has firm connection but also has detachability, so that the cover plate 112 can be conveniently opened to inspect and maintain the electrical component 200.

In another example of the present embodiment, the bottom plate body 110 includes a base 111 (no cover plate is provided), and when the base 111 is assembled with the cavity assembly 300 of the cooking appliance 1, the base 111 and the bottom plate of the cavity assembly 300 jointly define the receiving cavity 120. In this example, since the bottom plate body 110 does not include a cover plate, the electrical component 200 is in a half-exposed state after being mounted on the base 111, and after the bottom plate component 100 and the cavity component 300 are mounted, the electrical component 200 is packaged in the accommodating cavity 120, in this case, an insulating layer may be disposed on the bottom surface of the bottom plate of the cavity component 300, so that the electrical component 200 disposed in the accommodating cavity 120 can meet the requirement of electrical safety.

Alternatively, the base 111 may be an integrally formed part, and taking the base 111 as a plastic part as an example, the base 111 in an integral structure may be processed in an injection molding manner. Such a manner of integrally forming the base 111 is advantageous to reduce the number of parts of the cooking utensil 1, and is also advantageous to improve the assembly efficiency during the assembly process of the base plate assembly 100.

Optionally, a holding portion 113 is formed on the base 111, and the holding portion 113 is used for providing a place for an assembling person to grasp, so that the assembling person can grasp the base 111 more stably during the process of taking or transferring the base 111, and damage caused by falling the base 111 on the ground due to hand drop is prevented. In a specific example, the hand-held portion 113 may be a recessed structure formed on the surface of the base 111, and fingers of an assembler may extend into the recessed structure to grasp the base 111 more firmly. In another specific example, the holding portion 113 may be a handle protruding from the surface of the base 111, and the assembling person may grip the handle, thereby improving the stability of the base 111 when taking it.

Optionally, a reinforcing rib (not shown) is disposed on the base 111 to improve the structural strength and rigidity of the base 111, so that the base 111 is not easily damaged or deformed, and the service life and structural stability of the base 111 are improved.

In one example of the present embodiment, a receiving cavity 170 for receiving the water box assembly 180 is further formed on the bottom plate body 110. When the cooking appliance 1 is a cooking appliance having a steam function, the cooking appliance 1 generally includes the water box assembly 180, and the accommodating cavity 170 is formed in the bottom plate body 110 in this example, so that the water box assembly 180 can be integrated on the bottom plate assembly 100, and thus, the bottom plate assembly 100 integrates not only the electrical appliance assembly 200 but also the water box assembly 180, thereby further improving the degree of integration of the bottom plate assembly 100 and further highly expanding the functions of the bottom plate assembly 100.

In one embodiment of the present application, as shown in fig. 3 to 6, the soleplate assembly 100 includes a soleplate body 110, a receiving cavity 120, a power supply board 211 and a power supply line 150, wherein the receiving cavity 120 is formed inside the soleplate body 110, the power supply board 211 is disposed in the receiving cavity 120, the power supply line 150 is connected with the power supply board 211, and the power supply line 150 is used for connecting the power supply board 211 with an external power supply device (e.g., an alternating current power supply). Specifically, the power cord 150 includes a power cord body 151 and a cord passing structure 152, the cord passing structure 152 is formed on the power cord body 151, and the cord passing structure 152 is mounted on the bottom plate body 110.

According to the soleplate assembly 100 of the present embodiment, the accommodating cavity 120 is provided inside the soleplate body 110, and the power supply board 211 of the cooking appliance 1 is provided in the accommodating cavity 120, thereby enabling the soleplate assembly 100 not only to be used for providing a supporting function for the whole machine of the cooking appliance 1, but also integrating the power supply board 211, thereby expanding the functions of the soleplate assembly 100. In addition, the power cord 150 connected to the power board 211 is mounted on the bottom plate body 110 through the cord passing structure 152, so that the power cord 150 and the bottom plate assembly 100 are integrated, compared to the case that the power cord is usually mounted at the rear of the cooking appliance in the prior art, a wiring space can be saved for the case assembly 500 of the cooking appliance 1, thereby providing greater convenience in terms of component layout for the case assembly 500. In addition, the integration of the power cord 150 on the base plate assembly 100 is also simpler for the assembly process, thereby contributing to the improvement of the assembly efficiency of the cooking appliance 1.

In an example of the present embodiment, the wire passing opening 115 is formed on the bottom plate body 110, the clamping groove 1521 adapted to the wire passing opening 115 is formed on the wire passing structure 152, and the clamping groove 1521 can be clamped on the edge of the wire passing opening 115, so that the movement of the power line 150 is at least limited in the length direction thereof, and further, the length of the portion of the power line body 151 located inside the bottom plate body 110 is always kept unchanged, so as to avoid the problem that the power line 150 is easily separated from the power board 211 when being accidentally pulled.

Optionally, the shape of the wire passing port 115 may be polygonal, and in match therewith, the transverse cross section of the wire passing structure 152 is also polygonal, and when the wire passing structure 152 is clamped at the edge of the wire passing port 115 through the clamping groove 1521, because the transverse cross sections of the wire passing port 115 and the wire passing structure 152 are both polygonal, the wire passing structure 152 cannot rotate relative to the bottom plate body 110, and thus, the power line 150 can be prevented from being twisted in the use process of the cooking appliance 1, and the power supply board 211 connected to the power line 150 and the power line 150 can be protected. Further, in a preferred example, the wire passing opening 115 is rectangular, and accordingly, the transverse cross section of the wire passing structure 152 is also rectangular, which is beneficial to making the wire passing structure 152 and the wire passing opening 115 easy to process, thereby improving the processing effect.

Alternatively, the shape of the wire passing port 115 may also be an ellipse, and in match therewith, the transverse cross section of the wire passing structure 152 is also an ellipse. At this time, when the wire passing structure 152 is engaged with the edge of the wire passing port 115 through the engaging slot 1521, the wire passing structure 152 cannot rotate relative to the bottom plate body 110, and thus, the power line 150 and the power board 211 connected to the power line 150 can be protected.

In one example of the present embodiment, the base plate assembly 100 includes a base plate 111 and a cover plate 112, the cover plate 112 is connected to the top of the base plate 111, and the cover plate 112 and the base plate 111 together define a receiving cavity 120. When the backplane assembly 100 in this example is assembled, the power board 211 and the base 111 may be assembled together, and then the cover plate 112 and the base 111 are connected to form the backplane assembly 100.

Alternatively, the wire passing port 115 is disposed at the upper edge of the base 111, that is, when the base 111 is manufactured, a notch may be machined at the upper edge of the base 111, and after the base 111 and the cover plate 112 are assembled in a subsequent process, the cover plate 112 blocks the upper edge of the notch, so as to define the wire passing port 115.

In another example of the present embodiment, the bottom plate body 110 includes a base 111 (no cover plate is provided), and when the base 111 is assembled with the cavity assembly 300 of the cooking appliance 1, the base 111 and the bottom plate of the cavity assembly 300 jointly define the receiving cavity 120.

Optionally, the wire passing port 115 is disposed at an upper edge of the base 111, that is, when the base 111 is manufactured, a notch may be machined at the upper edge of the base 111, and after the base 111 and the bottom plate of the chamber assembly 300 are assembled in a subsequent process, the bottom plate of the chamber assembly 111 is sealed at the upper edge of the notch, so as to define the wire passing port 115.

In one example of the present embodiment, a filter plate 221 and/or a frequency converter 222 are further provided in the accommodation chamber 120. Since the filter plate 221 and the frequency converter 222 are electric devices exclusive to the microwave-based cooking appliance, when the cooking appliance 1 is a cooking appliance having a microwave function (e.g., a microwave oven all-in-one machine, etc.), the filter plate 221 and/or the frequency converter 222 may also be disposed in the accommodating chamber 120, thereby further improving the degree of integration of the soleplate assembly 100.

In one example of the present embodiment, a water pump 231 and/or a steam generator are further provided in the receiving chamber 120. Since the water pump 231 and the steam generator are electric devices exclusive to the steam-based cooking appliance, when the cooking appliance 1 is a cooking appliance having a steam function (e.g., a steam box, a steam oven all-in-one machine, etc.), the water pump 231 and/or the steam generator may also be disposed in the receiving cavity 120, thereby further improving the degree of integration of the soleplate assembly 100.

In one example of the present embodiment, a filter plate 221 and/or a frequency converter 222 are further provided in the receiving chamber 120, and a water pump 231 and/or a steam generator are further provided in the receiving chamber 120. When the cooking appliance 1 is a cooking appliance having both a microwave function and a steam function (e.g., a microwave-steam combo oven, etc.), the filter plate 221 and/or the frequency converter 222, the water pump 231, and/or the steam generator may also be disposed in the receiving cavity 120, thereby further improving the degree of integration of the base plate assembly 100.

In one example of the present embodiment, the bottom plate body 110 is an insulating member. In the prior art, electrical devices (such as the power panel 211, the filter panel 221, the frequency converter 222, the water pump 231, the steam generator, etc.) of the cooking appliance need to be installed in the insulating box first, and then the insulating box is installed on the whole machine.

In one embodiment of the present application, as shown in fig. 7, the bottom plate assembly 100 includes a bottom plate body 110 and a clearance structure 160, the clearance structure 160 is used for accommodating a microwave generating module of the cooking appliance 1, which in this example is a magnetron.

The base plate assembly 100 of the embodiment of the present application is suitable for a microwave cooking appliance, that is, a cooking appliance 1 having a microwave function, such as a microwave oven, a microwave oven all-in-one machine, a microwave steam oven all-in-one machine, and the like. For a microwave cooking appliance, a magnetron is generally disposed at the bottom of the cavity assembly 300, and the present application provides a clearance structure 160 on the bottom plate assembly 100, and the clearance structure 160 may receive the magnetron located at the bottom of the cavity assembly 300 in a state that the bottom plate assembly 100 is mounted to the cabinet assembly 500. On the other hand, the arrangement of the clearance structure 160 separates the magnetron from other structures on the bottom plate assembly 100, so that the cooking utensil does not contact the magnetron even if other structures on the bottom plate assembly 100 are loosened during transportation, and thus the clearance structure 160 also has a certain protection effect on the magnetron.

Optionally, as shown in fig. 3 and 4, a receiving cavity 120 is formed inside the bottom plate assembly 100, and the bottom plate assembly 100 further includes an electrical component 200 disposed in the receiving cavity 120, wherein the electrical component 200 is mainly an electrical component that enables the cooking appliance 1 to work normally and has a certain function, such as a power supply board 211, a frequency converter 222, a filter board 221, and the like. In this embodiment, the accommodating cavity 120 is disposed inside the bottom plate assembly 100, and the accommodating cavity 120 provides an installation position for the electrical component 200 of the cooking appliance 1, so that the electrical component 200 and the bottom plate body 110 are integrated together, thereby changing the situation that each power device of the existing cooking appliance is installed at different positions of the whole machine, which is beneficial to reducing the number of installation modules of the cooking appliance 1 in the assembling process, and improving the assembling efficiency.

Further, the electrical assembly 200 includes a first electrical assembly 210 and a second electrical assembly 220, wherein the first electrical assembly 210 includes at least one power device common to various cooking appliances, such as a power supply board 211, and the second electrical assembly 220 includes at least one power device specific to a microwave cooking appliance, such as a filter board 221, a frequency converter 222, and the like. The electrical component 200 in the present embodiment includes a first electrical component 210 and a second electrical component 220, and correspondingly, the cooking appliance 1 may be a microwave oven, a microwave oven all-in-one machine, a microwave steam oven all-in-one machine, or other cooking appliances with microwave function. For example, in one specific example, a power supply board 211, a filter board 221, and a frequency converter 222 are provided in the accommodation chamber 120. In another specific example, a power supply board 211 and a filter board 221 are provided in the accommodation chamber 120. In another different example, a power supply board 211 and a frequency converter 222 are provided in the accommodation chamber 120.

In one example of the present embodiment, the bottom plate body 110 is an insulating member. In the prior art, the power device of the cooking utensil needs to be installed in the insulating box first, and then the insulating box is integrally installed on the complete machine, compared with the prior art, the bottom plate body 110 in the example is the insulating part, and the electrical component 200 is directly installed in the accommodating cavity 200 inside the bottom plate body 110, so that the requirement on the safety of electricity utilization can be met, the arrangement of the insulating box can be cancelled, the number of parts of the complete machine is reduced, the production cost is reduced, and the production efficiency is improved.

Optionally, the bottom plate body 110 is a plastic or ceramic member. The working of plastics has good insulating properties, can satisfy the power consumption security requirement, and in addition, the working of plastics still has easily machine-shaping, cost lower, anti characteristics such as falling anti-collision. The ceramic piece also has good insulating property, and has the advantages of good brightness and wear resistance. It is understood that the bottom plate body 110 is not limited to a plastic or ceramic member, and may be made of an insulating material such as glass or mica.

In one example of the present embodiment, the accommodating chambers 120 are distributed in a "C" shape, such that the accommodating chambers 120 are disposed around the clearance structure 160 in a semi-enclosed manner. Thus, the capacity of the receiving cavity 120 can be increased as much as possible on the basis of ensuring the receiving of the magnetron, so that the receiving cavity 120 has enough space for installing the electric appliance assembly 200.

Further, a limiting groove 161 is formed on a sidewall of the clearance structure 160, and the limiting groove 161 is used for guiding and limiting a convex edge of the magnetron. In this embodiment, a limit groove 161 is formed on the sidewall of the clearance structure 160, and accordingly, a protruding edge is provided on the magnetron, and the protruding edge needs to enter into the limit groove 161 during the assembly process of the bottom plate assembly 100 and the cavity assembly 300 of the cooking appliance 1, so as to ensure that the bottom plate assembly 100 and the cavity assembly 300 are always aligned up and down during the assembly process, and thus, the limit groove 161 can play a role in guiding and limiting during the assembly process.

In an example of the present embodiment, a detachable bottom cover (not shown) is disposed at the bottom of the bottom plate body 110, and the bottom cover is disposed below the clearance structure 160. In this example, a detachable bottom cover is provided at the bottom of the bottom plate body 110, and the bottom cover is provided below the clearance structure 160, so that when the bottom cover is detached by a user, the magnetron of the cooking appliance 1 can be exposed, thereby facilitating the user to repair and maintain the magnetron. It can be seen that the clearance structure 160 can be used as an access hole of the magnetron with the bottom cover removed.

In one example of the present embodiment, the base plate body 110 includes a base plate 111 and a cover plate 112, the cover plate 112 is coupled to a top of the base plate 111, and the cover plate 112 and the base plate 111 together define a receiving chamber 120. When the base plate assembly 100 in this example is assembled, the electrical component 200 and the base 111 may be assembled together, and then the cover plate 112 and the base 111 are connected to form the base plate assembly 100.

In one example of the present embodiment, the bottom plate body 110 includes a base 111 (no cover plate is provided), and when the base 111 is assembled with the cavity assembly 300 of the cooking appliance 1, the base 111 and the bottom plate of the cavity assembly 300 jointly define the receiving cavity 120.

In one embodiment of the present application, as shown in fig. 8, the bottom plate body 110 includes a base 111 and a cover plate 112, the base 111 is further provided with a first air inlet 143 and a first air outlet 144, and the first air inlet 143 and the first air outlet 144 are formed on the base 111 and are used for dissipating heat of the electrical component 200 in the bottom plate body 110. A first air inlet channel 141 is formed between the first air inlet 143 and the heat dissipation fan 130, a first air outlet channel 142 is formed between the first air outlet 144 and the heat dissipation fan 130, and the first air inlet channel 141 and the first air outlet channel 142 are respectively provided with an electrical component 200.

The bottom plate assembly 100 of this embodiment is configured to arrange the heat dissipation fan 130 between the first air inlet channel 141 and the first air outlet channel 142, and the first air inlet channel 141 and the first air outlet channel 142 are respectively provided with a part of the electrical components 200, so that in the working process of the heat dissipation fan 130, a part of electrical components can be dissipated by the air inlet flow in the first air inlet channel 141, and at the same time, another part of electrical components can be dissipated by the air outlet flow in the first air outlet channel 142, so that the heat dissipation fan 130 can dissipate the electrical components in the first air inlet channel 141 and the first air outlet channel 142 at the same time, thereby maximally utilizing the heat dissipation fan 130 to dissipate the electrical components 200, and improving the heat dissipation efficiency of the heat dissipation fan 130, and preventing the problem that the effective heat dissipation cannot be performed by the heat dissipation motor 130 due to the difference in the installation positions of the electrical components. Meanwhile, the heat radiation fan 130 is arranged on the base 111, integration of all parts on the base 111 can be improved, an air duct does not need to be additionally arranged, the size of the base 111 is reduced, and the installation difficulty is reduced.

Optionally, the heating power of part of the electric devices in the first air inlet channel 141 is less than the heating power of another part of the electric devices in the first air outlet channel 142. Furthermore, along the flowing direction of the air flow, the electric devices can be sequentially arranged according to the order of the heating power from small to large, the arrangement is that the cooling effect of the air inlet flow in the first air inlet channel 141 is smaller than that of the air outlet flow in the first air outlet channel 142, the electric devices with low heating power in the first air inlet channel 141 can be cooled by the air inlet flow in the first air inlet channel 141, meanwhile, the air inlet flow after being heated to a small extent forms the air outlet flow under the action of the cooling fan 130, and the air outlet flow can effectively cool the electric devices with high heating power in the first air outlet channel 142, so that the efficiency of the cooling fan 130 is improved to the maximum extent.

In one example of the present embodiment, as shown in connection with fig. 4 and 8, the electrical component 200 further includes a first electrical component 210, a second electrical component 220, and a third electrical component 230. The first electrical component 210 of the present embodiment includes a power panel 211, the second electrical component 220 includes a filter panel 221, a frequency converter 222 and a microwave generation module, and the third electrical component includes a water pump 231. The electric devices are sequentially arranged according to the sequence of the heating power from small to large, the sequence of the electric devices after arrangement is that the power supply board 211, the filter board 221, the frequency converter 222, the water pump 231 and the microwave generation module are sequentially arranged along the flowing direction of the air flow, wherein the heating power of the power supply board 211 is far smaller than the heating power of the filter board 221, the frequency converter 222, the water pump 231 and the microwave generation module, the power supply board 211 is arranged in the first air inlet channel 141, and the filter board 221, the frequency converter 222, the water pump 231 and the microwave generation module are arranged in the first air outlet channel 142 or the filter board 221 is arranged close to the air inlet end of the cooling fan 130.

In an example of the present embodiment, the electrical component 200 is disposed in the first air inlet channel 141, that is, the heat dissipation fan 130 is disposed at a position close to the first air outlet 144, the power board 211, the filter board 221, the frequency converter 222, the water pump 231, and the microwave generation module are sequentially disposed between the heat dissipation fan 130 and the first air inlet 143 along the airflow flowing direction, and the electrical component is dissipated by the air inlet airflow of the heat dissipation fan 130.

In an example of the present embodiment, the electrical component 200 is disposed in the first air outlet channel 142, that is, the heat dissipation fan 130 is disposed at a position close to the first air inlet 143, the power board 211, the filter board 221, the frequency converter 222, the water pump 231, and the microwave generation module are sequentially disposed between the heat dissipation fan 130 and the first air outlet 144 along the airflow flowing direction, and the electrical component is dissipated by the air outlet airflow of the heat dissipation fan 130.

Wherein, since the cooking appliance 1 having the microwave function is provided with the microwave generating module, when the microwave generating module is a magnetron, the magnetron is connected to the bottom of the cavity assembly 300. In the embodiment, the base 111 is provided with a clearance structure 160, the clearance structure 160 is arranged corresponding to the magnetron, and the magnetron can be installed in the clearance structure 160. The clearance structure 160 is disposed near the end of the first air outlet channel 142, so that the cover plate 112 is disconnected. The spacing structure 160 is provided with a spacing groove 161 for mounting and fixing the magnetron, and the spacing groove 161 is arranged along the airflow flowing direction in the first air outlet channel 142, so that the magnetron and the base 111 can be conveniently connected and fixed.

The magnetron is disposed in the space-avoiding structure 160, and the air-out flow in the first air-out channel 142 can flow through the magnetron and then flow out through the first air outlet 144, so that the magnetron is effectively cooled by the air-out flow in the first air-out channel 142, and the reliable operation of the cooking appliance 1 is ensured. Meanwhile, the magnetron is disposed in the first air outlet channel 144, which occupies a part of the installation space of the base 111, and the base 111 does not have the installation space of the steam generator, so that the steam generator is disposed on the sidewall of the chamber body 310. In the case where the cooking appliance 1 does not have a steam function, electric components dedicated to the steam cooking appliance such as the water pump 231 and the steam generator may be omitted from the above configuration. When the cooking appliance 1 does not have a microwave function, electric components dedicated to the microwave oven type cooking appliance such as the filter plate 221, the frequency converter 222, and the microwave generation module may be omitted in the above-described structure, and the steam generator and the water pump 231 may be disposed in the base 111 at the same time.

Alternatively, as shown in fig. 9, the base 111 includes a bottom plate portion 1115, side plate portions 1116, and flap portions 1117, wherein the side plate portions 1116 are provided upward along an outer edge of the bottom plate portion 1115, the flap portions 1117 are provided upward along an inner edge of the bottom plate portion 1115, the side plate portions 1116 and the flap portions 1117 are provided at intervals from each other, and a broken-loop-shaped structure is formed between the side plate portions 1116 and the flap portions 1117. The bottom plate 1115 is provided with a first air inlet 143 and a first air outlet 144, and the first air inlet 143 and the first air outlet 144 are disposed adjacent to each other.

Further, the first air inlet 143 and the first air outlet 144 are adjacently disposed on the bottom plate 1115, and the first air inlet 143 and the first air outlet 144 are separated by the baffle 1431, so that convection is formed between the inlet airflow and the outlet airflow, and then the circulation speed of the airflow in the first air inlet channel 141 and the first air outlet channel 142 is increased, the sufficient airflow at the first air inlet 143 is ensured, and the heat dissipation effect of the heat dissipation fan 130 is further ensured.

Alternatively, as shown in fig. 10, the cover plate 112 is also provided with a first air inlet 143 and a second air outlet 144, the first air inlet 143 and the second air outlet 144 are also separated by a baffle 1431, the cover plate 112 is also provided with a bottom plate 1115, a side plate 1116 and a baffle 1117, wherein the side plate 1116 is disposed downward along the outer edge of the bottom plate 1115, the baffle 1117 is disposed downward along the inner edge of the bottom plate 1115, the side plate 1116 and the baffle 1117 of the cover plate 112 are spaced from each other, and a broken-back-shaped structure is formed between the side plate 1116 and the baffle 1117. The bottom plate 1115 of the cover plate 112 is also provided with a first air inlet 143 and a second air outlet 144, and the first air inlet 143 and the second air outlet 144 of the cover plate 112 are opposite to the first air inlet 143 and the second air outlet 144 of the base 111, so that both sides of the bottom plate body 110 assembled by the base 111 and the cover plate 112 can be used for air inlet and outlet, thereby further improving the air flow. The first air inlet 143 on the base 111 is further provided with an air inlet grille 1432, and the air inlet grille 1432 can effectively prevent insects or other micro particles from entering the inside of the base 111 while ensuring the air inlet of the first air inlet 143, so as to prevent the electronic device in the base 111 from being damaged.

In an example of the present embodiment, the cover plate 112 does not have the first air inlet 143 and the second air outlet 144, and the air inlet and the air outlet of the bottom plate assembly 100 are realized only by the first air inlet 143 and the second air outlet 144 on the base 111.

In one example of the present embodiment, one of the cover plate 112 and the base plate 111 without the baffle portion 1117 is provided, only the other one of the cover plate and the base plate is provided with the baffle portion 1117, and the first air inlet passage 141 and the first air outlet passage 142 are defined between the baffle portion 1117 and the side plate portion 1116.

In one example of the present embodiment, one of the cover plate 112 and the base plate 111 is provided without the side plate portion 1116, only the other one of the cover plate and the base plate is provided with the side plate portion 1116, and the first air intake duct 141 and the first air exhaust duct 142 are defined between the baffle portion 1117 and the side plate portion 1116.

In one example of the present embodiment, the bottom plate body 110 has no cover 112 structure, the bottom plate body 110 is provided with only the base 111, and the baffle portion 1117 and the side plate portion 1116 are provided at the bottom of the base 111 and the chamber assembly 300 simultaneously, or the baffle portion 1117 and the side plate portion 1116 are provided at only one of the base 111 and the bottom of the chamber assembly 300, so that the first air inlet channel 141 and the first air outlet channel 142 are defined between the base 111 and the bottom of the chamber assembly 300.

In an example of the present embodiment, a first air inlet 143 and a first air outlet 144 are disposed on the cover plate 112, a heat dissipation fan 130 is disposed on a communication pipeline between the first air inlet 143 and the first air outlet 144, and the heat dissipation fan 130 is also connected to the cover plate 112 for dissipating heat of the electrical component 200 in the accommodating chamber 120. A first air inlet channel 141 is formed between the first air inlet 143 and the heat dissipation fan 130, a first air outlet channel 142 is formed between the first air outlet 144 and the heat dissipation fan 130, and the first air inlet channel 141 and the first air outlet channel 142 are respectively provided with an electrical component 200, and are connected with the cover plate 112 through the base 111 to form the bottom plate component 110.

Optionally, the heat dissipation fan 130 is a centrifugal fan, an air inlet end of the heat dissipation fan 130 is disposed toward the bottom plate 1115, and an air outlet of the heat dissipation fan 130 is disposed toward the frequency converter 222. When the heat dissipation fan 130 works, air is introduced through the first air inlet 143 and forms an inlet airflow, and the inlet airflow cools and dissipates the power board 211 in the flowing process of the heat dissipation fan 130. The heated inlet airflow forms an outlet airflow under the action of the heat dissipation motor 130, and the outlet airflow is discharged from the air outlet of the heat dissipation fan 130 and flows out toward the first air outlet 144. In the flowing process of the outlet airflow toward the first outlet 144, the frequency converter 222, the water pump 231 and the microwave generation module can be effectively cooled. The filter plate 221 may be disposed between the heat dissipation fan 130 and the frequency converter 222, or disposed at a position close to the air inlet of the heat dissipation fan 130, and dissipates heat through the air outlet flow or the air inlet flow.

In an embodiment of the present application, as shown in fig. 11 and 12, the bottom plate body 110 includes a base 111 and a cover plate 112, the base 111 is further provided with a first air inlet 143, a second air inlet 147 and a first air outlet 144, a communication pipeline between the first air inlet 143 and the first air outlet 144 is provided with a heat dissipation fan 130, and the heat dissipation fan 130 is also connected to the base 111 for dissipating heat of the electrical component 200 in the bottom plate body 110. A first air inlet channel 141 is formed between the first air inlet 143 and the heat dissipation fan 130, a first air outlet channel 142 is formed between the first air outlet 144 and the heat dissipation fan 130, and the first air inlet channel 141 and the first air outlet channel 142 are respectively provided with an electrical component 200. The second air inlet 147 is disposed on the bottom plate 1115 of the base 111 and is opposite to the impeller 131 of the heat dissipation fan 130, and a second air inlet channel 145 is formed between the impeller 131 and the second air inlet 147, wherein the second air inlet channel 145 is disposed from the bottom plate 1115 of the base 111 toward the impeller 131 and finally points to the outside of the paper surface of fig. 11.

In the bottom plate assembly 100 in this embodiment, the heat dissipation fan 130 is disposed between the first air inlet channel 141 and the first air outlet channel 142, and the first air inlet channel 141 and the first air outlet channel 142 are respectively provided with a part of the electrical components 200, so that in the working process of the heat dissipation fan 130, a part of electrical components can be dissipated by the air inlet flow in the first air inlet channel 141, and simultaneously another part of electrical components can be dissipated by the air outlet flow in the first air outlet channel 142, so that the heat dissipation fan 130 can dissipate the electrical components in the first air inlet channel 141 and the first air outlet channel 142 at the same time, thereby maximally utilizing the heat dissipation fan 130 to dissipate the heat of the electrical components 200, improving the heat dissipation efficiency of the heat dissipation fan 130, and preventing the problem that the electrical components cannot be effectively dissipated by the heat dissipation motor 130 due to different installation positions. Meanwhile, the base 111 is further provided with a second air inlet 147, the second air inlet 147 is arranged opposite to the impeller 131 of the heat dissipation fan 130, a second air inlet channel 145 is formed between the impeller 131 and the second air inlet 147, and the air inlet volume and the air outlet volume of the heat dissipation fan 130 can be further increased through the arrangement of the second air inlet 147, so that the air flow of the cooling air flow in the base 111 is further increased, and the cooling and heat dissipation effect of the heat dissipation fan 130 is further improved. Meanwhile, the heat radiation fan 130 is arranged on the base 111, integration of all parts on the base 111 can be improved, an air duct does not need to be additionally arranged, the size of the base 111 is reduced, and the installation difficulty is reduced.

Optionally, the heating power of a part of the electric devices in the first air inlet channel 141 is less than the heating power of another part of the electric devices in the first air outlet channel 142. Furthermore, along the flowing direction of the air flow, the electric devices can be sequentially arranged according to the order of the heating power from small to large, the arrangement is that the cooling effect of the air inlet flow in the first air inlet channel 141 is smaller than that of the air outlet flow in the first air outlet channel 142, the electric devices with low heating power in the first air inlet channel 141 can be cooled by the air inlet flow in the first air inlet channel 141, meanwhile, the air inlet flow after being heated to a small extent forms the air outlet flow under the action of the cooling fan 130, and the air outlet flow can effectively cool the electric devices with high heating power in the first air outlet channel 142, so that the efficiency of the cooling fan 130 is improved to the maximum extent.

Further, as shown in conjunction with fig. 4 and 11, the electrical assembly 200 further includes a first electrical assembly 210, a second electrical assembly 220, and a third electrical assembly 230. The first electrical component 210 of the present embodiment includes a power panel 211, the second electrical component 220 includes a filter panel 221, a frequency converter 222 and a microwave generation module, and the third electrical component includes a water pump 231. The electric devices are arranged in sequence from small to large according to the heating power, and the power panel 211, the frequency converter 222, the water pump 231 and the microwave generating module are arranged in sequence along the flowing direction of the airflow after the electric devices are arranged. Wherein the power panel 211 is disposed in the first air inlet channel 141, the frequency converter 222, the water pump 231 and the microwave generation module are disposed in the first air outlet channel 142, the air outlet of the heat dissipation fan 130 is disposed toward the frequency converter 222, the filter panel 221 and the frequency converter 222 are separately disposed on two sides of the heat dissipation fan 130, and the filter panel 221 dissipates heat through the air inlet flow in the second air inlet channel 145.

Alternatively, as shown in fig. 13 to 16, the heat dissipation fan 130 includes an impeller 131, a motor 132, and a motor support 133, the motor support 133 is connected to the bottom plate 1115 of the bottom plate body 110, the motor 132 is disposed on the motor support 133, the impeller 131 is connected to the output shaft 1322 of the motor 132 and is disposed above the motor 132, that is, the motor 132 is disposed closer to the bottom plate 1115 of the base 111 relative to the impeller 131, and the impeller 131 and the motor body 1321 are disposed on two sides of the motor support 133 respectively. A rotation shaft hole 1337 is formed at the center of the motor bracket 133, and an output shaft 1332 of the motor 132 can pass through the rotation shaft hole 1337 to be connected with the impeller 131. First mounting holes 1338 are further formed at both sides or the periphery of the rotation shaft hole 1332 for fixing the motor 132 to the motor bracket 133 by screw connection. The outer sidewall of the motor bracket 133 is further provided with a plurality of second mounting holes 1339 for fixing the motor bracket 133 to the bottom plate part 1115 through screw connection, so as to realize the connection and fixation of the heat dissipation fan 130 and the base 111. The central position of the motor bracket 133 is provided with a plurality of ventilation openings 1331, the ventilation openings 1331 are arranged opposite to the impeller 131, the position of the through hole 1331 is an air inlet end of the heat dissipation fan, and the air flow outside the base 111 can enter the impeller 131 through the second air inlet 147 and the ventilation openings 1331 in sequence under the action of the impeller 131, so as to form an intake air flow, and a second air inlet channel 145 is formed between the second air inlet 147 and the impeller 131. The heat dissipation fan 130 of the present embodiment includes only one air outlet end for delivering airflow to the first air outlet 144.

Optionally, as shown in fig. 11, the heating power of a part of the electric devices in the first air inlet channel 141 is smaller than the heating power of another part of the electric devices in the first air outlet channel 142. Furthermore, along the flowing direction of the air flow, the electric devices can be sequentially arranged according to the order of the heating power from small to large, the arrangement is that the cooling effect of the air inlet flow in the first air inlet channel 141 is smaller than that of the air outlet flow in the first air outlet channel 142, the electric devices with low heating power in the first air inlet channel 141 can be cooled by the air inlet flow in the first air inlet channel 141, meanwhile, the air inlet flow after being heated to a small extent forms the air outlet flow under the action of the cooling fan 130, and the air outlet flow can effectively cool the electric devices with high heating power in the first air outlet channel 142, so that the efficiency of the cooling fan 130 is improved to the maximum extent.

In one example of the present embodiment, the motor bracket 133 is connected to the side plate 1116 of the base 111 or the cover plate 112, and the ventilation opening 1331 is disposed toward the impeller 131, the impeller 131 is disposed above the motor 132, a second air intake channel 145 is formed between the impeller 131 and the second air intake 147, and air is taken in through the second air intake 147 of the bottom plate 1115, so as to increase the air flow of the heat dissipation fan 130.

In an embodiment of the present application, as shown in fig. 11 and 12, the bottom plate body 110 includes a base 111 and a cover plate 112, the base 111 is further provided with a first air inlet 143, a second air inlet 147 and a first air outlet 144, a communication pipeline between the first air inlet 143 and the first air outlet 144 is provided with a heat dissipation fan 130, and the heat dissipation fan 130 is also connected to the base 111 for dissipating heat of the electrical component 200 in the bottom plate body 110. A first air inlet channel 141 is formed between the first air inlet 143 and the heat dissipation fan 130, a first air outlet channel 142 is formed between the first air outlet 144 and the heat dissipation fan 130, and the first air inlet channel 141 and the first air outlet channel 142 are respectively provided with an electrical component 200. The second wind inlet 147 is disposed on the side plate 1116 of the base 111 and is opposite to the impeller 131 of the heat dissipation fan 130, and a second wind channel 145 is formed between the impeller 131 and the second wind inlet 147, wherein the second wind channel 145 is disposed from the side plate 1116 of the base 111 toward the impeller 131 and finally points to the outside of the paper surface of fig. 11.

In the bottom plate assembly 100 in this embodiment, the heat dissipation fan 130 is disposed between the first air inlet channel 141 and the first air outlet channel 142, and the first air inlet channel 141 and the first air outlet channel 142 are respectively provided with a part of the electrical components 200, so that in the working process of the heat dissipation fan 130, a part of electrical components can be dissipated by the air inlet flow in the first air inlet channel 141, and simultaneously another part of electrical components can be dissipated by the air outlet flow in the first air outlet channel 142, so that the heat dissipation fan 130 can dissipate the electrical components in the first air inlet channel 141 and the first air outlet channel 142 at the same time, thereby maximally utilizing the heat dissipation fan 130 to dissipate the heat of the electrical components 200, improving the heat dissipation efficiency of the heat dissipation fan 130, and preventing the problem that the electrical components cannot be effectively dissipated by the heat dissipation motor 130 due to different installation positions. Meanwhile, a second air inlet 147 is further formed in the side plate 1116 of the base 111, the second air inlet 147 is arranged opposite to the impeller 131 of the heat dissipation fan 130, a second air inlet channel 145 is formed between the impeller 131 and the second air inlet 147, and the air inlet amount and the air outlet amount of the heat dissipation fan 130 can be further increased through the arrangement of the second air inlet 147, so that the flow rate of cooling air flow in the base 111 is further increased, and the cooling and heat dissipation effects of the heat dissipation fan 130 are further improved. Meanwhile, the heat radiation fan 130 is arranged on the base 111, integration of all parts on the base 111 can be improved, an air duct does not need to be additionally arranged, the size of the base 111 is reduced, and the installation difficulty is reduced.

Alternatively, as shown in fig. 13 to 16, the heat dissipation fan 130 includes an impeller 131, a motor 132, and a motor support 133, the motor support 133 is connected to the bottom plate 1115 of the bottom plate body 110, the motor 132 is disposed on the motor support 133, the impeller 131 is connected to the output shaft 1322 of the motor 132 and is disposed below the motor 132, that is, the impeller 131 is disposed closer to the bottom plate 1115 of the base 111 relative to the motor 132, and the impeller 131 and the motor body 1321 are disposed on two sides of the motor support 133 respectively. A rotation shaft hole 1337 is formed at the center of the motor bracket 133, and an output shaft 1332 of the motor 132 can pass through the rotation shaft hole 1337 to be connected with the impeller 131. First mounting holes 1338 are further formed at both sides or the periphery of the rotation shaft hole 1332 for fixing the motor 132 to the motor bracket 133 by screw connection. The outer sidewall of the motor bracket 133 is further provided with a plurality of second mounting holes 1339 for fixing the motor bracket 133 to the bottom plate part 1115 through screw connection, so as to realize the connection and fixation of the heat dissipation fan 130 and the base 111. The central position of the motor bracket 133 is provided with a plurality of ventilation openings 1331, the ventilation openings 1331 are arranged opposite to the impeller 131, the position of the through hole 1331 is an air inlet end of the heat dissipation fan, and the air flow outside the base 111 can enter the impeller 131 through the second air inlet 147 and the ventilation openings 1331 in sequence under the action of the impeller 131, so as to form an intake air flow, and a second air inlet channel 145 is formed between the second air inlet 147 and the impeller 131. The heat dissipation fan 130 of the present embodiment includes only one air outlet end for delivering airflow to the first air outlet 144.

In an embodiment of the present application, as shown in fig. 10 and 18, the bottom plate body 110 includes a base 111 and a cover plate 112, the base 111 is further provided with a first air inlet 143 and a first air outlet 144, and the cover plate is provided with a second air outlet 148. The heat dissipation fan 130 is connected to the base 111 and is used for dissipating heat of the electrical components 200 in the bottom plate body 110. A first air inlet channel 141 is formed between the first air inlet 143 and the heat dissipation fan 130, a first air outlet channel 142 is formed between the first air outlet 144 and the heat dissipation fan 130, and the first air inlet channel 141 and the first air outlet channel 142 are respectively provided with an electrical component 200. A second air outlet channel 146 is formed between the second air outlet 148 and the heat dissipation fan 130, and the second air outlet channel 146 delivers cooling air flow to the outside of the bottom plate assembly 100 through the second air outlet 148, so as to cool and dissipate the electric devices outside the bottom plate assembly 100.

In the bottom plate assembly 100 in this embodiment, the heat dissipation fan 130 is disposed between the first air inlet channel 141 and the first air outlet channel 142, and the first air inlet channel 141 and the first air outlet channel 142 are respectively provided with a part of the electrical components 200, so that in the working process of the heat dissipation fan 130, a part of electrical components can be dissipated by the air inlet flow in the first air inlet channel 141, and simultaneously another part of electrical components can be dissipated by the air outlet flow in the first air outlet channel 142, so that the heat dissipation fan 130 can dissipate the electrical components in the first air inlet channel 141 and the first air outlet channel 142 at the same time, thereby maximally utilizing the heat dissipation fan 130 to dissipate the heat of the electrical components 200, improving the heat dissipation efficiency of the heat dissipation fan 130, and preventing the problem that the electrical components cannot be effectively dissipated by the heat dissipation motor 130 due to different installation positions. Meanwhile, a second air outlet 148 is further arranged on the bottom plate assembly, a second air outlet channel 146 is formed between the second air outlet 148 and the heat dissipation fan 130, and cooling air flow is conveyed to the outside of the bottom plate assembly 100 through the second air outlet 148 through the second air outlet 146, so that electric devices outside the bottom plate assembly 100 are cooled and dissipated, the problem of heat dissipation of a plurality of electric devices in different spatial positions can be solved simultaneously, an additional cooling air duct does not need to be added, and the size of the whole machine is reduced.

The outlet airflow flowing out through the second outlet 148 is mainly used for dissipating heat of electrical devices disposed between the box assembly 500 and the cavity assembly 300, where the electrical devices include, but are not limited to, one or more of a furnace lamp, an infrared sensing device, and a furnace door interlock switch. Optionally, in order to better utilize the outlet airflow flowing out from the second air outlet 148 to perform cooling and heat dissipation, an independent cooling air duct may be further disposed between the box assembly 500 and the cavity assembly 300, and an electrical device to be cooled is disposed in the cooling air duct, so as to improve the heat dissipation range of the heat dissipation fan 130.

Alternatively, as shown in fig. 13 to 16, the heat dissipation fan 130 includes an impeller 131, a motor 132, and a motor bracket 133, the motor bracket 133 is connected to the cover plate 112, the motor 132 is disposed on the motor bracket 133, the impeller 131 is connected to an output shaft 1322 of the motor 132 and is disposed above the motor 132, that is, the motor 132 is disposed closer to the bottom plate 1115 of the base 111 than the impeller 131, and the impeller 131 and the motor body 1321 are disposed on two sides of the motor bracket 133, respectively. A rotation shaft hole 1337 is formed at the center of the motor bracket 133, and an output shaft 1332 of the motor 132 can pass through the rotation shaft hole 1337 to be connected with the impeller 131. First mounting holes 1338 are further formed at both sides or the periphery of the rotation shaft hole 1332 for fixing the motor 132 to the motor bracket 133 by screw connection. The outer sidewall of the motor bracket 133 is further provided with a plurality of second mounting holes 1339 for fixing the motor bracket 133 to the bottom plate part 1115 through screw connection, so as to realize the connection and fixation of the heat dissipation fan 130 and the base 111.

Further, the motor bracket 133 includes a support plate 1334, a first shroud plate 1335 and a second shroud plate 1336, where the first shroud plate 1335 and the second shroud plate 1336 are respectively disposed along an edge of the support plate 1334, an opposite end of the first shroud plate 1335 and an opposite end of the second shroud plate 1336 form a first air outlet end 1332, and an opposite other end of the first shroud plate 1335 and the second shroud plate 1336 form a second air outlet end 1333. The first air outlet end 1332 is disposed towards the first air outlet channel 142, and the second air outlet end 1333 is disposed towards the second air outlet channel 146. When the heat dissipation fan 130 operates, the air outlet airflow formed by the impeller 131 can flow into the first air outlet channel 142 through the first air outlet end 1332, and is discharged through the first air outlet 144 after cooling the electric device in the first air outlet channel 142, and simultaneously, the air outlet airflow formed by the impeller 131 can also flow into the second air outlet channel 146 through the second air outlet end 1333, and is discharged to the outside of the bottom plate assembly 100 through the second air outlet 148, thereby cooling the external electric device of the bottom plate assembly 100, and further achieving the problem of heat dissipation of a plurality of electric devices in different spatial positions.

Further, the cross-sectional area of the first air outlet end 1332 is larger than that of the second air outlet end 1333. Because the first air outlet end 1332 is used for conveying cooling air flow into the first air outlet channel 142, and the second air outlet end 1333 is used for conveying cooling air flow to the outside of the bottom plate assembly 100, because the heating power of the electric device in the first air outlet channel 142 is greater than the heating power of the electric device outside the bottom plate assembly 100, the required amount of cooling air flow in the first air outlet channel 142 should be greater than the required amount of cooling air flow outside the bottom plate assembly 100, and therefore the cross-sectional area of the first air outlet end 1332 is greater than the cross-sectional area of the second air outlet end 1333.

Further, the height dimensions of the first shroud 1335 and the second shroud 1336 are respectively smaller than the height dimension of the impeller 131, so that when the impeller 131 rotates, more air inflow can be obtained between the adjacent blades 1311, and the air flow of the heat dissipation fan 130 can be further increased.

Due to the filter plate 221, the height dimension of the second air outlet end 1333 of the motor bracket 133 is gradually reduced along the extending direction thereof. Specifically, for the backup pad 1334 along the extending direction of self slope gradually rises, the top position of first bounding wall 1335 and second bounding wall 1336 is unchangeable to lead to the whole height size of second air-out end 1333 to reduce, and then reserve the space of dodging for filtering board 221 in the bottom of second air-out end 1333.

In one example of the present embodiment, the motor bracket 133 is connected to the side plate portion 1116 or the bottom plate portion 1116 of the base 111, and the impeller 131 is disposed below the motor 132, that is, the impeller 131 is disposed closer to the bottom plate portion 1115 of the base 111 relative to the motor 132. At this time, the first shroud 1335 and the second shroud 1336 are also disposed below the support plate 1334, and the purpose of outputting the cooling airflow through the first air outlet end 1332 and the second air outlet end 1333 can be achieved in the same manner. Correspondingly, in order to leave the avoidance space for the filter plate 221, the support plate 1334 is arranged along the horizontal direction, and the first enclosing plate 1335 and the second enclosing plate 1336 gradually incline and rise along the extension direction of the first enclosing plate 1335 and the second enclosing plate 1336, so that the overall height size of the second air outlet end 1333 is reduced, and the avoidance space is left for the filter plate 221 at the bottom of the second air outlet end 1333.

Alternatively, as shown in fig. 17, the impeller 131 includes a blade mounting plate 1312, a fixing ring 1313, and a plurality of blades 1311, one ends of the plurality of blades 1311 are annularly provided to the blade mounting plate 1312 along an edge position of the blade mounting plate 1312, and the other ends of the plurality of blades 1311 are connected by the fixing ring 1313. Wherein. The fixed ring 1313 is connected to the other end of the blade 1311, so that the amount of wind blocking when the impeller 131 is induced can be minimized, and the amount of airflow of the heat dissipation motor 130 can be increased.

Further, the width dimension of the retainer ring 1313 is smaller than or equal to the width dimension of the vane 1311, thereby preventing the retainer ring 1313 from blocking the intake airflow of the impeller.

In one example of this embodiment, the impeller 131 may also be a normal centrifugal wind wheel. The structure of the heat dissipation fan 130 in the present embodiment may be applied to the base plate assembly 100 in any of the above embodiments.

In an embodiment of the present application, as shown in fig. 10 and 18, in this embodiment, the bottom plate body 110 includes a base 111 and a cover plate 112, the base 111 is further provided with a first air inlet 143, a first air outlet 144 and a second air inlet 147, and the cover plate is provided with a second air outlet 148. The heat dissipation fan 130 is connected to the base 111 and is used for dissipating heat of the electrical components 200 in the bottom plate body 110. A first air inlet channel 141 is formed between the first air inlet 143 and the heat dissipation fan 130, a first air outlet channel 142 is formed between the first air outlet 144 and the heat dissipation fan 130, and the first air inlet channel 141 and the first air outlet channel 142 are respectively provided with an electrical component 200. The second air inlet 147 is disposed on the side plate 1116 or the bottom plate 1115 of the base 111, and is disposed opposite to the impeller 131 of the heat dissipation fan 130, and a second air inlet channel 145 is formed between the impeller 131 and the second air inlet 147. The second air intake duct 145 is disposed toward the impeller 131 from the bottom plate 1115 or the side plate 1116 of the base 111, and is finally directed to the outside of the paper surface in fig. 18. A second air outlet channel 146 is formed between the second air outlet 148 and the heat dissipation fan 130, and the second air outlet channel 146 is used for conveying cooling airflow to the outside of the bottom plate assembly 100, so as to cool and dissipate heat of electric devices outside the bottom plate assembly 100.

In this embodiment, the heat dissipation fan 130 is disposed between the first air inlet channel 141 and the first air outlet channel 142 by providing the first air inlet 143, the first air outlet 144, the second air inlet 147 and the second air outlet 148 on the bottom plate assembly 100, and partial electric appliance assemblies 200 are respectively arranged on the first air inlet channel 141 and the first air outlet channel 142, so that in the working process of the cooling fan 130, partial electric appliances can be cooled through the air inlet flow in the first air inlet channel 141, meanwhile, the air outlet flow in the first air outlet channel 142 dissipates heat to another part of the electric devices, so that the heat dissipation fan 130 dissipates heat to the electric devices in the first air inlet channel 141 and the first air outlet channel 142 at the same time, therefore, the heat dissipation fan 130 is utilized to dissipate heat of the electrical component 200 to the maximum extent, the heat dissipation efficiency of the heat dissipation fan 130 is improved, and the problem that heat cannot be effectively dissipated through the heat dissipation motor 130 due to different installation positions of various electrical devices is solved. Meanwhile, the base 111 is further provided with a second air inlet 147, the second air inlet 147 is arranged opposite to the impeller 131 of the heat dissipation fan 130, a second air inlet channel 145 is formed between the impeller 131 and the second air inlet 147, and the air inlet volume and the air outlet volume of the heat dissipation fan 130 can be further increased through the arrangement of the second air inlet 147, so that the air flow of the cooling air flow in the base 111 is further increased, and the cooling and heat dissipation effect of the heat dissipation fan 130 is further improved. Meanwhile, a second air outlet 148 is further formed in the bottom plate assembly 100, a second air outlet channel 146 is formed between the second air outlet 148 and the heat dissipation fan 130, and the second air outlet channel 146 is used for conveying cooling air flow to the outside of the bottom plate assembly 100, so that cooling heat dissipation is performed on electric devices outside the bottom plate assembly 100, the problem of heat dissipation of the electric devices in different spatial positions can be solved simultaneously, an extra cooling air duct does not need to be added, and the size of the whole machine is reduced.

Alternatively, the heat dissipation fan 130 includes an impeller 131, a motor 132, and a motor support 133, the motor support 133 is connected to the bottom plate 1115 of the bottom plate body 110, the motor 132 is disposed on the motor support 133, the impeller 131 is connected to the output shaft 1322 of the motor 132 and is disposed above the motor 132, that is, the motor 132 is disposed closer to the bottom plate 1115 of the base 111 relative to the impeller 131, and the impeller 131 and the motor body 1321 are disposed on two sides of the motor support 133, respectively. A rotation shaft hole 1337 is formed at the center of the motor bracket 133, and an output shaft 1332 of the motor 132 can pass through the rotation shaft hole 1337 to be connected with the impeller 131. First mounting holes 1338 are further formed at both sides or the periphery of the rotation shaft hole 1332 for fixing the motor 132 to the motor bracket 133 by screw connection. The outer sidewall of the motor bracket 133 is further provided with a plurality of second mounting holes 1339 for fixing the motor bracket 133 to the bottom plate part 1115 through screw connection, so as to realize the connection and fixation of the heat dissipation fan 130 and the base 111. The central position of the motor bracket 133 is provided with a plurality of ventilation openings 1331, the ventilation openings 1331 are arranged opposite to the second air inlet 147, and the air flow outside the base 111 can enter the impeller 131 through the second air inlet 147 and the ventilation openings 1331 in sequence under the action of the impeller 131, so that the intake air flow is formed, and a second air inlet channel 145 is formed between the second air inlet 147 and the impeller 131.

Optionally, the motor bracket 133 includes a support plate 1334, a first shroud 1335 and a second shroud 1336, the first shroud 1335 and the second shroud 1336 are respectively disposed along an edge of the support plate 1334, an opposite end of the first shroud 1335 and an opposite end of the second shroud 1336 form a first air outlet end 1332, and an opposite other end of the first shroud 1335 and the second shroud 1336 form a second air outlet end 1333. The first air outlet end 1332 is disposed towards the first air outlet channel 142, and the second air outlet end 1333 is disposed towards the second air outlet channel 146. When the heat dissipation fan 130 operates, the air outlet airflow formed by the impeller 131 can flow into the first air outlet channel 142 through the first air outlet end 1332, and is discharged through the first air outlet 144 after cooling the electric device in the first air outlet channel 142, and simultaneously, the air outlet airflow formed by the impeller 131 can also flow into the second air outlet channel 146 through the second air outlet end 1333, and is discharged to the outside of the bottom plate assembly 100 through the second air outlet 148, thereby cooling the external electric device of the bottom plate assembly 100, and further achieving the problem of heat dissipation of a plurality of electric devices in different spatial positions.

In one example of the present embodiment, the motor bracket 133 is connected to the side plate 1116 or the cover plate 112 of the base 111, and the ventilation opening 1331 is disposed toward the second air inlet 147, so that the impeller 131 is disposed below the motor 132, and the first enclosing plate 1335 and the second enclosing plate 1336 are disposed below the supporting plate 1334, so that the second air inlet channel 145 can be formed between the impeller 131 and the second air inlet 147, and air can be introduced through the second air inlet 147 of the side plate 1115, thereby increasing the air flow rate of the heat dissipation fan 130.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a cooling fan which characterized in that, cooling fan includes:

an impeller;

the impeller is connected with an output shaft of the motor;

2. The cooling fan of claim 1, wherein the at least two air outlets include a first air outlet and a second air outlet, and the first air outlet and the second air outlet extend in different directions.

3. The fan as claimed in claim 2, wherein the cross-sectional area of the first outlet end is larger than the cross-sectional area of the second outlet end.

4. The cooling fan according to claim 1, wherein the motor support includes a support plate, a first enclosure and a second enclosure, the first enclosure and the second enclosure are respectively disposed opposite to each other along an edge of the support plate, an opposite end of the first enclosure and an opposite end of the second enclosure form the first outlet end, an opposite end of the first enclosure and an opposite end of the second enclosure form the second outlet end, and a height dimension of the second outlet end gradually decreases along an extending direction of the second outlet end.

5. The cooling fan in accordance with claim 4, wherein the height dimension of the first shroud and the height dimension of the second shroud are each smaller than the height dimension of the impeller.

6. The cooling fan as claimed in claim 1, wherein the motor support is provided with a vent hole disposed opposite to the impeller.

7. The cooling fan according to claim 1, wherein the impeller includes a blade mounting plate, a fixing ring, and a plurality of blades, one ends of the plurality of blades are annularly provided to the blade mounting plate along an edge position of the blade mounting plate, and the other ends of the plurality of blades are connected by the fixing ring.

8. The cooling fan in accordance with claim 7, wherein a width dimension of the fixing ring is smaller than or equal to a width dimension of the blade.

9. The cooling fan in accordance with claim 1 wherein the impeller is a centrifugal wind wheel.

10. A floor assembly, comprising:

a bottom plate body;

the electrical component is arranged in the bottom plate body;

the heat dissipation fan is arranged in the bottom plate body and used for dissipating heat of the electrical component, wherein the heat dissipation fan is the heat dissipation fan according to any one of claims 1 to 9.

11. The bottom plate assembly of claim 10, wherein the bottom plate body has a first air inlet, a first air outlet and a second air outlet, a first air inlet channel is formed between the impeller and the first air inlet, a first air outlet channel is formed between the impeller and the first air outlet, a second air outlet channel is formed between the impeller and the second air outlet, the first air outlet end of the motor bracket extends toward the first air outlet channel, and the second air outlet end of the motor bracket extends toward the second air outlet channel.

12. The bottom plate assembly of claim 11, wherein the bottom plate body further comprises a second air inlet, the second air inlet is disposed opposite to the impeller, and a second air inlet channel is formed between the impeller and the second air inlet.

13. The bottom plate assembly of claim 11, wherein a portion of the electrical components of the electrical assembly are disposed in the first air inlet channel, another portion of the electrical components of the electrical assembly are disposed in the first air outlet channel, and the heating power of the portion of the electrical components in the first air inlet channel is less than the heating power of the another portion of the electrical components in the first air outlet channel.

14. A cooking appliance, comprising:

a cavity assembly;

15. The cooking appliance of claim 14, further comprising a housing, wherein a space defined between the housing and the sidewall of the cavity assembly is in communication with the second outlet.

16. The cooking appliance of claim 15, wherein at least one of a stove light, an infrared sensor and a stove door interlock switch is disposed in a space defined between the housing and the sidewall of the cavity.