CN114271687B

CN114271687B - Heat radiation fan, bottom plate subassembly and cooking utensil

Info

Publication number: CN114271687B
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: 2023-11-17
Anticipated expiration: 2040-09-27
Also published as: CN114271687A

Abstract

The invention relates to the technical field of household appliances, in particular to a heat radiation fan, a bottom plate assembly and a cooking appliance. The heat radiation fan comprises an impeller, a motor and a motor bracket, wherein the impeller is connected with an output shaft of the motor, the motor is arranged on the motor bracket, and at least two air outlet ends are arranged on the motor bracket. According to the cooling fan disclosed by the invention, at least two air outlet ends are arranged on the motor support, and the cooling air flow 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 flow is output towards different space positions, the components at multiple space positions are cooled at the same time, the cooling effect of the cooling fan is improved, and the reliable operation of the electric appliance components in the bottom plate component is ensured.

Description

Heat radiation fan, bottom plate subassembly and cooking utensil

Technical Field

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

Background

It is well known that the cooking appliance cooks food by means of the high-temperature environment of the cavity, so that in the working process, the electric components in the cooking appliance are difficult to avoid being subjected to thermal shock of the high-temperature cavity to cause a fault phenomenon, and furthermore, part of electric components, such as a magnetron, a frequency converter, a power supply board and the like, have large self-heating values, and can be ensured to work normally by radiating in time. In order to solve the related problems, many cooking appliances adopt passive heat dissipation technology, such as adding heat dissipation holes on the casing and the bottom plate, increasing heat exchange area, or wrapping heat insulation materials outside the cavity, so as to reduce the influence of high temperature heat on the electric components. Of course, some active heat dissipation techniques are adopted, and a single or multiple fans are utilized to dissipate heat from individual components in a local space through independent heat dissipation air channels.

However, the above-mentioned prior art structures all increase the structural complexity of the heat dissipation air duct, and cannot dissipate heat from the components at multiple spatial positions simultaneously through the same motor.

Disclosure of Invention

The invention aims to at least solve the problem that heat cannot be dissipated simultaneously for parts in a plurality of space positions through 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 cooling fan disclosed by the invention, at least two air outlet ends are arranged on the motor support, and the cooling air flow 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 flow is output towards different space positions, the components at multiple space positions are cooled at the same time, the cooling effect of the cooling fan is improved, and the reliable operation of the electric appliance components in the bottom plate component is ensured.

In addition, the heat radiation fan according to the invention can also have the following additional technical characteristics:

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 are disposed in different directions.

In some embodiments of the invention, the cross-sectional area of the first air outlet end is greater than the cross-sectional area of the second air outlet end.

In some embodiments of the present invention, the motor support includes a support plate, a first shroud and a second shroud, where the first shroud and the second shroud are disposed opposite to each other along an edge of the support plate, opposite ends of the first shroud and the second shroud form the first air outlet end, opposite ends of the first shroud and the second shroud form the second air outlet end, and a height dimension of the second air outlet end gradually decreases along an extension 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 invention, the motor support is provided with a vent hole arranged 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 disposed on the blade mounting plate along an edge position of the blade mounting plate, and the other ends of the plurality of blades are connected through 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 comprising:

a base plate body;

the electric appliance 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 electric appliance 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 formed on the base 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 support extends towards the direction of the first air outlet channel, and a second air outlet end of the motor support extends towards the direction of the second air outlet channel.

In some embodiments of the present invention, a second air inlet is further provided on the base plate body, the second air inlet is disposed opposite to the impeller, and the 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 electric devices of the electric assembly are disposed in the first air inlet channel, another part of the electric devices of the electric assembly are disposed in the first air outlet channel, and the heating power of the part of the electric devices in the first air inlet channel is smaller than the heating power of the other part of the electric devices in the first air outlet channel.

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

a cavity assembly;

a floor assembly provided below the cavity assembly, wherein the floor assembly is in accordance with any one of claims 11 to 13.

In some embodiments of the invention, the cooking appliance 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 interlocking switch is arranged in a containing space formed between the shell and the side wall 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 reference numerals are used to designate like parts throughout the figures. Wherein:

Fig. 1 is a schematic view of the overall structure of a cooking appliance according to the present application;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

FIG. 16 is an exploded view of a motor assembly in an embodiment of the application;

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

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

Reference numerals:

1: a cooking appliance;

100: a base plate assembly;

110: a base plate body;

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

120: a receiving chamber;

123: a mounting part;

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

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

150: a power line;

151: power cord body, 152: wire structure, 1521: a clamping groove;

160: a clearance structure;

161: a limit groove;

170: a housing chamber;

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: and 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 present invention are shown in the drawings, it should be understood that the present invention may 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" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "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 an order of performance is explicitly stated. It should also be appreciated 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 ease 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 … …" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship 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 base plate assembly 100 is used for providing a supporting function for the whole machine of the cooking appliance 1, and the box assembly 500 of the cooking appliance 1 can be mounted on the base plate body 100.

Further, the cooking appliance 1 further includes a cavity assembly 300, the cavity assembly 300 being formed inside the case assembly 500, the cavity assembly 300 being 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 case assembly 500 in such a manner that the cavity assembly 300 can be opened or closed.

In one embodiment of the present application, the chassis assembly 100 includes a chassis body 110, a receiving chamber 120, and an electrical assembly 200, the receiving chamber 120 is formed inside the chassis body 110, the chassis body 110 is an insulating member, and the electrical assembly 200 is disposed in the receiving chamber 120. The electrical component 200 is mainly an electronic device group that enables the cooking appliance 1 to work normally and has a certain function, where the electronic devices are, for example, a power board 211, a frequency converter 222, a filter board 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 situation that each power device of the existing cooking appliance is installed at different parts of the whole machine, and being beneficial to reducing the number of installation modules of the cooking appliance 1 in the assembly process, so as to improve the assembly efficiency. In addition, in the prior art, the power device of the cooking appliance needs to be installed in the insulation box first, and then the insulation box is integrally installed on the whole machine, compared with the prior art, the base plate body 110 in the embodiment is an insulation piece, and the electric appliance assembly 200 is directly installed in the accommodating cavity 200 inside the base plate body 110, so that the requirement of electricity safety can be met, and the setting of the insulation box can be canceled, so that 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 component 200 further includes at least one of a second electrical component 220 and a third electrical component 230, wherein the second electrical component 220 includes at least one electrical device dedicated to a microwave cooking appliance, such as a filter plate 221, a frequency converter 222 (or a transformer), a microwave generating module, etc., the microwave generating module in this example is a semiconductor microwave generator, and the third electrical component 230 includes at least one electrical device dedicated to a steam cooking appliance, such as a water pump 231, a steam generator (not shown in the figure), etc. The frequency converter 222 and the transformer in the electric device dedicated for 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 a different structure according to different microwave generating principles, for example, for a magnetron type microwave cooking appliance, the microwave generating module may include a magnetron, a waveguide, etc., and for a semiconductor type microwave cooking appliance, the microwave generating module may include a semiconductor microwave generator.

Specifically, when the electric appliance assembly 200 includes the first electric appliance assembly 210 and the second electric appliance assembly 220, the cooking appliance 1 may be a cooking appliance having a microwave function such as a microwave oven, a microwave oven all-in-one machine, or the like, respectively. For example, in one specific example, a power supply board 211, a filter board 221, a frequency converter 222 (or a 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 a different example, a power supply board 211 and a frequency converter 222 (or a transformer) are provided in the accommodation chamber 120. It will be appreciated that in other examples, the electrical components 200 disposed in the receiving cavity 120 may be in various combinations including semiconductor microwave generators, not specifically illustrated herein.

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

When the electric appliance assembly 200 includes the first electric appliance assembly 210, the second electric appliance assembly 220, and the third electric appliance assembly 230, the cooking appliance 1 may be a microwave steam all-in-one machine, an oven microwave steam all-in-one machine, or the like, having both a microwave function and a steam function, respectively. For example, in one specific example, a power supply board 211, a filter board 221, a frequency converter 222 (or a transformer), a water pump 231, and a steam generator are provided in the accommodation chamber 120. In another specific example, the power supply board 211, the filter board 221, the water pump 231, and the steam generator are disposed in the accommodating chamber 120, and the filter board 221 may be replaced by a frequency converter 222 (or a transformer), thereby forming another different combination. In another specific example, the power supply board 211, the filter board 221, the inverter 222 (or the transformer) and the water pump 231 are disposed in the accommodating chamber 120, and the water pump 231 may 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 may be replaced with a frequency converter 222 (or a transformer), and the water pump 231 may be replaced with a steam generator, thereby forming a different combination. It will be appreciated that in other examples, the electrical components 200 disposed in the receiving cavity 120 may be in various combinations including semiconductor microwave generators, not specifically illustrated herein.

Optionally, a plurality of mounting positions are formed in the accommodating cavity 120, each mounting position is used for assembling a corresponding electric device, and the shape and the volume of each mounting position can be set according to the specific electric device to be assembled, that is, different mounting positions have a certain difference in shape and volume, so that when the base plate assembly 100 is assembled, an assembler can quickly identify the mounting position corresponding to each electric device, thereby improving the assembly efficiency. On the other hand, because different mounting positions have certain differences in shape and volume, the electric device can be prevented from being mounted at the wrong position by an assembler, and cannot be matched with the mounting position if the mounting position corresponding to the electric device is not found. For example, if an assembler erroneously installs the filter board 221 at a specific installation position in the accommodating chamber 120, the filter board 221 may not smoothly enter the power board installation position due to the shape mismatch or the size mismatch, and thus, the error correction function is performed. Optionally, a plurality of mounting positions are formed in the accommodating cavity 120, each mounting position is used for assembling a corresponding electric device, the shape and volume of each mounting position can be set according to a specific electric device to be assembled, a mounting portion 123 is arranged at the bottom of each mounting position, the mounting portion 123 is used for being connected with a corresponding electric device, the mounting portion 123 can be, for example, a connecting hole or a connecting column with a connecting hole, the electric device can be connected with the mounting portion 123 through a connecting piece such as a bolt, and then the electric device is mounted on the corresponding mounting position.

In one example of the present embodiment, at least two vents communicating with the receiving chamber 120 are formed on the base plate body 110, the vents communicating the receiving chamber 120 with the outside of the base plate body 110. Each electric device in the accommodating cavity 120 can generate heat during operation, and the arrangement of the ventilation openings enables heat generated by each electric device to be discharged out of the accommodating cavity 120, so that heat dissipation and cooling of each electric device are facilitated, and stable working performance and long service life of each electric device are facilitated to be maintained.

In another example of the present embodiment, at least two ventilation openings communicating with the accommodating cavity 120 are formed on the base plate body 110, and a heat dissipation fan 130 is disposed in the accommodating cavity 120, where the heat dissipation fan 130 is used to form an air flow circulation inside and outside the accommodating cavity 120 so as to introduce external cold air into the accommodating cavity 120, and simultaneously, the circulated air flow is used to timely discharge heat generated by each electric device in the accommodating cavity 120. In addition, in order to achieve better heat dissipation, the arrangement sequence of the electric devices can be optimized. Specifically, along the flow direction of the air flow, the electric devices can be arranged in order of small heating power, so that the cooling air has the advantage of small temperature rise after passing through the electric devices with small heating power, and thus, the cooling air still has good cooling effect when passing through the electric devices with large heating power. In the following, a specific example will be described, taking a case where the power supply board 211, the filter board 221, the inverter 222, the water pump 231, and the steam generator are simultaneously provided in the housing chamber 120 as an example, the above-mentioned electric devices are arranged in order of the heat generation power from small to large in the flow direction of the air flow. The layout of the electric devices is such that the power panel 211, the filter panel 221, the inverter 222, the water pump 231, and the steam generator are sequentially arranged in the flowing direction of the flow. In addition, when the cooking appliance 1 does not have the steam function, electric devices dedicated to the steam cooking appliance such as the water pump 231 and the steam generator may be omitted in the above-described layout, and when the cooking appliance 1 does not have the microwave function, electric devices dedicated to the microwave oven cooking appliance such as the filter plate 221 and the inverter 222 may be omitted in the above-described layout.

In an example of the present embodiment, the base plate body 110 is a plastic piece or a ceramic piece, and the plastic piece has good insulation characteristics, can meet the requirement of electrical safety, and has the characteristics of easy processing and molding, low cost, anti-falling and 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 base plate body 110 is not limited to plastic or ceramic, but may be made of insulating materials such as glass and mica.

In one example of the present embodiment, the base plate body 110 includes a base 111 and a cover plate 112, the cover plate 112 is coupled to the top of the base 111, and the cover plate 112 and the base 111 together define the receiving chamber 120. The base plate assembly 100 in this example may be assembled by assembling the electrical component 200 with the base 111, and then connecting the cover 112 with the base 111 to form the base plate assembly 100. It will be appreciated that both the base 111 and the cover 112 are of an insulating material such that the electrical assembly 200 disposed in the receiving cavity 120 is capable of meeting electrical safety requirements.

Further, the cover plate 112 and the base 111 can be connected by screws, on one hand, the screws are common connectors, the cost is low, and on the other hand, the screw connection mode is firm in connection and detachable, so that the cover plate 112 is convenient to open for checking and maintaining the electrical appliance assembly 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 together define the receiving cavity 120. In this example, since the base plate body 110 does not include a cover plate, the electrical component 200 is in a semi-exposed state after being mounted on the base 111, and when the base plate component 100 and the cavity component 300 are packaged in the accommodating cavity 120, an insulating layer may be disposed on a bottom surface of the base plate of the cavity component 300, so that the electrical component 200 disposed in the accommodating cavity 120 can meet the electrical safety requirement.

Alternatively, the base 111 may be an integrally formed piece, and taking the base 111 as a plastic piece as an example, the base 111 having an integrally formed structure may be manufactured by injection molding. This manner of integrally forming the base 111 is advantageous in reducing the number of parts of the entire machine of the cooking appliance 1, and is also advantageous in improving the assembly efficiency in the process of assembling the base plate assembly 100.

Optionally, a hand-holding portion 113 is formed on the base 111, where the hand-holding portion 113 is used to provide a location for an assembler to grasp, so that the assembler can grasp more stably during the process of taking or transferring the base 111, and damage caused by falling the base 111 to the ground due to the hand-off is prevented. In a specific example, the hand-held portion 113 may be a concave structure formed on the surface of the base 111, and the fingers of the assembler may extend into the concave structure to grasp the base 111 more firmly. In another specific example, the hand-held portion 113 may be a handle protruding from the surface of the base 111, and an assembler may grasp the handle to improve the stability when taking the base 111.

Optionally, reinforcing ribs (not shown in the figure) are provided on the base 111 to improve the structural strength and structural rigidity of the base 111, so that the base 111 is not easy to break in structure and deform, and further 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 cartridge assembly 180 is further formed on the bottom plate body 110. When the cooking appliance 1 is a cooking appliance with a steam function, the cooking appliance 1 generally includes a water box assembly 180, and the accommodating cavity 170 is disposed on the base plate body 110 in this example, so that the water box assembly 180 can be integrated on the base plate assembly 100, and therefore, the base plate assembly 100 is integrated with not only the electric appliance assembly 200 but also the water box assembly 180, thereby further improving the integration degree of the base plate assembly 100, and further highly expanding the functions of the base plate assembly 100.

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

According to the floor assembly 100 of the present embodiment, which is provided with the accommodation chamber 120 inside the floor body 110, the power panel 211 of the cooking appliance 1 is provided in the accommodation chamber 120, thereby making the floor assembly 100 not only for providing a supporting effect on the whole machine of the cooking appliance 1, but also integrating the power panel 211, thereby expanding the functions of the floor assembly 100. In addition, the power cord 150 connected with the power panel 211 is mounted on the bottom plate body 110 through the wire passing structure 152, so that the power cord 150 and the bottom plate assembly 100 are integrated together, the wiring space for the case assembly 500 of the cooking appliance 1 can be saved, and thus the case assembly 500 provides greater convenience in terms of the layout of components, compared to the case where the power cord is generally mounted at the rear of the cooking appliance in the related art. In addition, the power cord 150 is integrated on the base plate assembly 100, which is easier for the assembly process, thereby being beneficial to improving the assembly efficiency of the cooking appliance 1.

In an example of the present embodiment, the wire passing opening 115 is formed on the base plate body 110, the slot 1521 adapted to the wire passing opening 115 is formed on the wire passing structure 152, and the slot 1521 may be engaged with an edge of the wire passing opening 115, so that the movement of the power cord 150 is limited at least in the length direction thereof, and further, the length of the portion of the power cord body 151 located inside the base plate body 110 is kept unchanged all the time, so as to avoid the problem that the power cord 150 is easily separated from the power panel 211 when being pulled accidentally.

Optionally, the shape of the wire passing opening 115 may be polygonal, and in matching with the shape, the transverse section of the wire passing structure 152 is also polygonal, when the wire passing structure 152 is clamped at the edge of the wire passing opening 115 through the clamping groove 1521, the wire passing opening 115 and the transverse section of the wire passing structure 152 are both polygonal, so that the wire passing structure 152 cannot rotate relative to the base plate body 110, thereby preventing the power wire 150 from twisting during use of the cooking appliance 1, and being beneficial to protecting the power wire 150 and the power board 211 connected with the power wire 150. Further, in a preferred example, the wire passing opening 115 is rectangular in shape, and the transverse cross section of the wire passing structure 152 is rectangular in shape correspondingly, which is beneficial to facilitating the processing of the wire passing structure 152 and the wire passing opening 115, thereby improving the processing effect.

Alternatively, the wire passing opening 115 may be elliptical in shape, and the transverse cross section of the wire passing structure 152 is elliptical in shape in accordance therewith. At this time, when the wire passing structure 152 is engaged with the edge of the wire passing port 115 through the engagement groove 1521, the wire passing structure 152 cannot rotate relative to the chassis body 110, and thus can also function to protect the power supply wire 150 and the power supply board 211 connected to the power supply wire 150.

In one example of the present embodiment, the base plate assembly 100 includes a base 111 and a cover plate 112, the cover plate 112 being coupled to a top of the base 111, the cover plate 112 and the base 111 together defining a receiving chamber 120. The backplane assembly 100 in this example may be assembled by assembling the power board 211 with the base 111, and then connecting the cover 112 with the base 111 to form the backplane assembly 100.

Alternatively, the wire passing opening 115 is disposed at the upper edge of the base 111, that is, when the base 111 is manufactured, a notch may be formed at the upper edge of the base 111, and after the base 111 and the cover 112 are assembled in a subsequent process, the cover 112 is plugged at the upper edge of the notch, so as to define the wire passing opening 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 together define the receiving cavity 120.

Optionally, the wire passing opening 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 bottom plate of the cavity assembly 300 are assembled in a subsequent process, the bottom plate of the cavity assembly 111 is plugged at the upper edge of the notch, so as to define the wire passing opening 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 inverter 222 are electric devices specific to the microwave-type 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 inverter 222 may be also disposed in the receiving cavity 120, thereby further improving the degree of integration of the floor assembly 100.

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

In one example of the present embodiment, a filter plate 221 and/or a frequency converter 222 are further provided in the accommodating chamber 120, and a water pump 231 and/or a steam generator are further provided in the accommodating 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 all-in-one machine, an oven microwave steam all-in-one machine, etc.), the filter plate 221 and/or the inverter 222, the water pump 231, and/or the steam generator may be also disposed in the receiving cavity 120, thereby further improving the degree of integration of the floor assembly 100.

In one example of the present embodiment, the base plate body 110 is an insulator. 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 an insulation box first, and then the insulation box is integrally installed on the whole machine.

In one embodiment of the present application, as shown in fig. 7, the floor assembly 100 includes a floor body 110 and a space avoiding structure 160, the space avoiding structure 160 being used to accommodate a microwave generating module of the cooking appliance 1, which in this example is a magnetron.

The bottom plate assembly 100 according to the embodiment of the present application is suitable for a microwave cooking appliance, that is, a cooking appliance 1 having a microwave function, for example, a microwave oven integrated machine, a microwave steam oven integrated machine, and the like. For the microwave cooking appliance, the magnetron is generally disposed at the bottom of the cavity assembly 300, and the present application provides the space avoiding structure 160 on the bottom plate assembly 100, and the space avoiding structure 160 can accommodate the magnetron located at the bottom of the cavity assembly 300 when the bottom plate assembly 100 is mounted to the cabinet assembly 500. On the other hand, the arrangement of the space avoiding structure 160 isolates the magnetron from other structures on the bottom plate assembly 100, so that the space avoiding structure 160 can not contact the magnetron even if other structures on the bottom plate assembly 100 are loosened during transportation of the cooking utensil, and the space avoiding structure 160 has a certain protection effect on the magnetron.

Alternatively, as shown in fig. 3 and 4, a receiving chamber 120 is formed inside the base plate assembly 100, and the base plate assembly 100 further includes an electric appliance assembly 200 disposed in the receiving chamber 120, wherein the electric appliance assembly 200 is mainly an electric appliance assembly that enables the cooking appliance 1 to normally operate and has a certain function, such as a power panel 211, a frequency converter 222, a filter panel 221, and the like. In this embodiment, the accommodating cavity 120 is provided in 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 parts of the whole machine, and thus, being beneficial to reducing the number of installation modules of the cooking appliance 1 in the assembly process, and improving the assembly efficiency.

Further, the electrical component 200 includes a first electrical component 210 and a second electrical component 220, wherein the first electrical component 210 includes at least one power device commonly used in various cooking appliances, such as a power board 211, and the second electrical component 220 includes at least one power device exclusively used in microwave cooking appliances, such as a filter board 221, a frequency converter 222, and the like. The electric appliance assembly 200 in the present embodiment includes a first electric appliance assembly 210 and a second electric appliance assembly 220, and accordingly, the cooking appliance 1 may be a cooking appliance having a microwave function, such as a microwave oven, a microwave oven integrated machine, a microwave steam oven integrated machine, or the like. 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 a 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 base plate body 110 is an insulator. In the prior art, the power device of the cooking appliance needs to be installed in the insulation box first, and then the insulation box is integrally installed on the whole machine, compared with the prior art, the base plate body 110 in the example is an insulation piece, and the electric appliance assembly 200 is directly installed in the accommodating cavity 200 inside the base plate body 110, so that the requirement of electricity safety can be met, and the setting of the insulation box can be canceled, so that the number of parts of the whole machine is reduced, the production cost is reduced, and the production efficiency is improved.

Alternatively, the base plate body 110 is a plastic or ceramic piece. The plastic part has good insulating property, can meet the requirement of electricity safety, and has the characteristics of easy processing and forming, lower 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 base plate body 110 is not limited to plastic or ceramic, but may be made of insulating materials such as glass and mica.

In one example of this embodiment, the receiving cavities 120 are distributed in a "C" shape such that the receiving cavities 120 are disposed in a semi-enclosed fashion around the void structure 160. In this way, the volume of the accommodating chamber 120 can be increased as much as possible on the basis of ensuring the accommodating of the magnetron, so that the accommodating chamber 120 has a sufficient space for mounting the electric appliance assembly 200.

Further, a limit groove 161 is formed on a sidewall of the space avoiding structure 160, and the limit groove 161 is used for guiding and limiting a convex edge of the magnetron. In this embodiment, the side wall of the space avoiding structure 160 is formed with the limit groove 161, accordingly, the magnetron is provided with the protruding edge, and in the process of assembling the bottom plate assembly 100 and the cavity assembly 300 of the cooking appliance 1, the protruding edge needs to enter the limit groove 161, so that the bottom plate assembly 100 and the cavity assembly 300 are ensured to be aligned up and down all the time in the assembling process, and the arrangement of the limit groove 161 can play a role in guiding and limiting in the assembling process.

In one example of the present embodiment, a detachable bottom cover (not shown) is provided at the bottom of the bottom plate body 110, and the bottom cover is provided under the space avoiding 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 under the space avoiding structure 160, so that the magnetron of the cooking appliance 1 can be exposed when the user removes the bottom cover, thus facilitating the user to overhaul and maintain the magnetron. It can be seen that the keep-out structure 160 can be used as an access opening for the magnetron with the bottom cover removed.

In one example of the present embodiment, the base plate body 110 includes a base 111 and a cover plate 112, the cover plate 112 is coupled to the top of the base 111, and the cover plate 112 and the base 111 together define the receiving chamber 120. The base plate assembly 100 in this example may be assembled by assembling the electrical component 200 with the base 111, and then connecting the cover 112 with the base 111 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 together define the receiving cavity 120.

In one embodiment of the present application, as shown in fig. 8, the base 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 for dissipating heat of the electrical component 200 in the base 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, through placing the heat dissipation fan 130 between the first air inlet channel 141 and the first air outlet channel 142, and be provided with a part of the electrical components 200 on the first air inlet channel 141 and the first air outlet channel 142 respectively, so that in the working process of the heat dissipation fan 130, heat can be dissipated to a part of electrical components through the air inlet airflow in the first air inlet channel 141, and simultaneously, heat can be dissipated to another part of electrical components through the air outlet airflow in the first air outlet channel 142, so that the heat dissipation fan 130 dissipates heat to the electrical components 141 and the first air outlet channel 142 simultaneously, thereby maximally utilizing the heat dissipation fan 130 to dissipate heat to the electrical components 200, improving the heat dissipation efficiency of the heat dissipation fan 130, and preventing the problem that the heat cannot be effectively dissipated through the heat dissipation motor 130 due to different installation positions of the electrical components. Meanwhile, the heat radiation fan 130 is arranged on the base 111, so that integration of all parts on the base 111 can be improved, an air duct is not required 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 smaller than the heating power of another part of the electric devices in the first air outlet channel 142. Further, along the flow direction of the air flow, the electric devices may be sequentially arranged in order of small to large heating power, so 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 the temperature is slightly raised 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 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 above electric devices are sequentially arranged according to the order of the heating power from small to large, and the arranged electric devices are sequentially arranged along the flow direction of the air flow by the power panel 211, the filter panel 221, the frequency converter 222, the water pump 231 and the microwave generating module, wherein the heating power of the power panel 211 is far less than that of the filter panel 221, the frequency converter 222, the water pump 231 and the microwave generating module, the power panel 211 is arranged in the first air inlet channel 141, and the filter panel 221, the frequency converter 222, the water pump 231 and the microwave generating module are arranged in the first air outlet channel 142, or the filter panel 221 is arranged near the air inlet end of the heat dissipation fan 130.

In one 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 near the first air outlet 144, and the power panel 211, the filter panel 221, the inverter 222, the water pump 231 and the microwave generating module are sequentially disposed between the heat dissipation fan 130 and the first air inlet 143 along the airflow direction, so that the heat dissipation is performed on the electrical component by the air inlet of the heat dissipation fan 130.

In one 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 near the first air inlet 143, and the power panel 211, the filter panel 221, the inverter 222, the water pump 231 and the microwave generating module are sequentially disposed between the heat dissipation fan 130 and the first air outlet 144 along the airflow direction, so that the heat dissipation is performed on the electrical component by the air flow of the air outlet of the heat dissipation fan 130.

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

The magnetron is arranged in the air-avoiding structure 160, and the air-out air flow in the first air-out channel 142 can flow out through the first air-out opening 144 after flowing through the magnetron, so that the magnetron is effectively radiated by the air-out air flow in the first air-out channel 142, and the reliable operation of the cooking utensil 1 is ensured. Meanwhile, since the magnetron is disposed in the first air outlet passage 144, a part of the installation space of the base 111 is occupied, and there is no installation space of the steam generator in the base 111, the steam generator is disposed on the sidewall of the cavity body 310. In addition, when the cooking appliance 1 does not have the steam function, the electric devices dedicated to the steam cooking appliance such as the water pump 231 and the steam generator may be omitted in the above-described configuration. When the cooking appliance 1 does not have the microwave function, electric devices dedicated to the microwave oven-type cooking appliance such as the filter plate 221, the inverter 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 simultaneously disposed in the base 111.

Alternatively, as shown in fig. 9, the chassis 111 includes a bottom plate portion 1115, a side plate portion 1116 and a baffle portion 1117, wherein the side plate portion 1116 is disposed upward along an outer edge of the bottom plate portion 1115, the baffle portion 1117 is disposed upward along an inner edge of the bottom plate portion 1115, the side plate portion 1116 and the baffle portion 1117 are disposed apart from each other, and a broken back-shaped structure is formed between the side plate portion 1116 and the baffle portion 1117. Wherein, be equipped with first air intake 143 and first air outlet 144 on the bottom plate portion 1115, first air intake 143 and first air outlet 144 adjacent arrangement.

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 air inlet airflow and the air outlet airflow, and further the circulation speed of the airflow in the first air inlet channel 141 and the first air outlet channel 142 is improved, 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 portion 1115, a side plate portion 1116 and a baffle portion 1117, wherein the side plate portion 1116 is arranged downward along the outer edge of the bottom plate portion 1115, the baffle portion 1117 is arranged downward along the inner edge of the bottom plate portion 1115, the side plate portion 1116 and the baffle portion 1117 on the cover plate 112 are arranged at intervals, and a disconnected zigzag structure is formed between the side plate portion 1116 and the baffle portion 1117. The bottom plate portion 1115 on 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 on the cover plate 112 are opposite to the first air inlet 143 and the second air outlet 144 on the base 111, so that air inlet and air outlet can be performed on two sides of the bottom plate body 110 assembled by the base 111 and the cover plate 112, and the air flow is further improved. 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 tiny particles from entering the base 111 while ensuring air inlet of the first air inlet 143, thereby preventing damage to electronic devices in the base 111.

In one example of the present embodiment, the cover plate 112 has no first air inlet 143 and no second air outlet 144, and the air inlet and the air outlet of the base plate assembly 100 are realized only through 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 non-baffle portion 1117 of the base 111 is provided, only the other of which is provided with the baffle portion 1117, and the first air intake 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 non-side plate portion 1116 of the base 111 is provided, only the other side plate portion 1116 is provided, and the first air intake 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, the bottom plate body 110 has no cover plate 112 structure, and the bottom plate body 110 is provided with only the base 111, by providing the baffle portion 1117 and the side plate portion 1116 at the same time at the bottom of the base 111 and the cavity assembly 300, or providing the baffle portion 1117 and the side plate portion 1116 at only one of the bottom of the base 111 and the cavity assembly 300, thereby defining the first air intake passage 141 and the first air outlet passage 142 between the base 111 and the bottom of the cavity assembly 300.

In an example of the present embodiment, the cover plate 112 is provided with the first air inlet 143 and the first air outlet 144, and the communication pipe between the first air inlet 143 and the first air outlet 144 is provided with the heat dissipation fan 130, 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 cavity 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 towards the bottom plate portion 1115, and an air outlet of the heat dissipation fan 130 is disposed towards the frequency converter 222. When the heat dissipation fan 130 works, air is taken in through the first air inlet 143 and forms air intake, and the air intake cools and dissipates heat to the power panel 211 in the flowing process of the air intake towards the heat dissipation fan 130. The heated air inlet flow forms air outlet flow under the action of the heat radiation motor 130, and the air outlet flow is discharged from the air outlet of the heat radiation fan 130 and flows out towards the first air outlet 144. In the flowing process of the air-out airflow towards the first air outlet 144, the frequency converter 222, the water pump 231 and the microwave generating module can be effectively radiated. The filter 221 may be disposed between the heat dissipation fan 130 and the frequency converter 222, or disposed near the air inlet of the heat dissipation fan 130, and dissipate 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 base 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 heat dissipation fan 130 is disposed on a communication pipe between the first air inlet 143 and the first air outlet 144, and the heat dissipation fan 130 is also connected to the base 111 for dissipating heat of the electrical component 200 in the base 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 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, 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.

The bottom plate assembly 100 in this embodiment is configured to place the heat dissipation fan 130 between the first air inlet channel 141 and the first air outlet channel 142, and is provided with a part of electrical components 200 on the first air inlet channel 141 and the first air outlet channel 142 respectively, so that in the working process of the heat dissipation fan 130, the heat dissipation can be performed on a part of electrical components through the air inlet airflow in the first air inlet channel 141, and simultaneously, the heat dissipation fan 130 dissipates the heat of another part of electrical components through the air outlet airflow in the first air outlet channel 142, so that the heat dissipation fan 130 dissipates the heat of the electrical components 200 simultaneously, the heat dissipation efficiency of the heat dissipation fan 130 is improved, and the problem that the heat dissipation motor 130 cannot effectively dissipate the heat due to different installation positions of the electrical components is prevented. Meanwhile, a second air inlet 147 is further formed in 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 and the air outlet 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 cooling air flow in the base 111 is further improved, 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, so that integration of all parts on the base 111 can be improved, an air duct is not required to be additionally arranged, the size of the base 111 is reduced, and the installation difficulty is reduced.

Further, as shown in connection 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 sequentially arranged according to the order of the small power generation from the large power generation, and the electric devices are sequentially arranged along the flowing direction of the air flow by the power panel 211, the frequency converter 222, the water pump 231 and the microwave generating module. The power panel 211 is disposed in the first air inlet channel 141, the frequency converter 222, the water pump 231 and the microwave generating module are disposed in the first air outlet channel 142, the air outlet of the heat dissipation fan 130 is disposed towards the frequency converter 222, the filter panel 221 and the frequency converter 222 are separately disposed at 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 bracket 133, the motor bracket 133 is connected to the bottom plate portion 1115 of the bottom plate body 110, the motor 132 is disposed on the motor bracket 133, the impeller 131 is connected to the output shaft 1322 of the motor 132 and disposed above the motor 132, that is, the motor 132 is disposed closer to the bottom plate portion 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 provided at a central position of the motor bracket 133, and an output shaft 1332 of the motor 132 can be connected with the impeller 131 through the rotation shaft hole 1337. First mounting holes 1338 are also provided on both sides or around the rotation shaft hole 1332 for fixing the motor 132 to the motor bracket 133 through screw connection. The outer side wall 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 portion 1115 through screw connection, thereby realizing connection fixation of the heat radiation fan 130 and the base 111. The center position of the motor support 133 is provided with a plurality of ventilation openings 1331, the ventilation openings 1331 are opposite to the impeller 131, the position of the through hole 1331 is the air inlet end of the heat dissipation fan, and the air flow outside the base 111 can sequentially enter the impeller 131 through the second air inlet 147 and the ventilation openings 1331 under the action of the impeller 131, so that an air inlet flow is formed, and a second air inlet channel 145 is formed between the second air inlet 147 and the impeller 131. The cooling fan 130 of the present embodiment includes only one air outlet end for delivering air flow to the first air outlet 144.

Optionally, as further 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. Further, along the flow direction of the air flow, the electric devices may be sequentially arranged in order of small to large heating power, so 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 the temperature is slightly raised 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 an 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 impeller 131, the impeller 131 is disposed above the motor 132, and the second air intake passage 145 is formed between the impeller 131 and the second air intake 147 and is taken in through the second air intake 147 of the bottom plate 1115, thereby increasing the air flow rate of the heat radiation fan 130.

In an embodiment of the present application, as shown in fig. 11 and 12, the base 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 heat dissipation fan 130 is disposed on a communication pipe between the first air inlet 143 and the first air outlet 144, and the heat dissipation fan 130 is also connected to the base 111 for dissipating heat of the electrical component 200 in the base 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 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, wherein the second air inlet 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.

The bottom plate assembly 100 in this embodiment is configured to place the heat dissipation fan 130 between the first air inlet channel 141 and the first air outlet channel 142, and is provided with a part of electrical components 200 on the first air inlet channel 141 and the first air outlet channel 142 respectively, so that in the working process of the heat dissipation fan 130, the heat dissipation can be performed on a part of electrical components through the air inlet airflow in the first air inlet channel 141, and simultaneously, the heat dissipation fan 130 dissipates the heat of another part of electrical components through the air outlet airflow in the first air outlet channel 142, so that the heat dissipation fan 130 dissipates the heat of the electrical components 200 simultaneously, the heat dissipation efficiency of the heat dissipation fan 130 is improved, and the problem that the heat dissipation motor 130 cannot effectively dissipate the heat due to different installation positions of the electrical components is prevented. Meanwhile, a second air inlet 147 is further formed in the side plate 1116 of the base 111, the second air inlet 147 is 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 and the air outlet 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 cooling air flow in the base 111 is further improved, 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, so that integration of all parts on the base 111 can be improved, an air duct is not required to be additionally arranged, the size of the base 111 is reduced, and the installation difficulty is reduced.

Further, as shown in connection 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 sequentially arranged according to the order of the small power generation from the large power generation, and the electric devices are sequentially arranged along the flowing direction of the airflow by the power panel 211, the frequency converter 222, the water pump 231 and the microwave generating module. The power panel 211 is disposed in the first air inlet channel 141, the frequency converter 222, the water pump 231 and the microwave generating module are disposed in the first air outlet channel 142, the air outlet of the heat dissipation fan 130 is disposed towards the frequency converter 222, the filter panel 221 and the frequency converter 222 are separately disposed at 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 bracket 133, the motor bracket 133 is connected to the bottom plate portion 1115 of the bottom plate body 110, the motor 132 is disposed on the motor bracket 133, the impeller 131 is connected to the output shaft 1322 of the motor 132 and disposed below the motor 132, that is, the impeller 131 is disposed closer to the bottom plate portion 1115 of the base 111 than the motor 132, 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 provided at a central position of the motor bracket 133, and an output shaft 1332 of the motor 132 can be connected with the impeller 131 through the rotation shaft hole 1337. First mounting holes 1338 are also provided on both sides or around the rotation shaft hole 1332 for fixing the motor 132 to the motor bracket 133 through screw connection. The outer side wall 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 portion 1115 through screw connection, thereby realizing connection fixation of the heat radiation fan 130 and the base 111. The center position of the motor support 133 is provided with a plurality of ventilation openings 1331, the ventilation openings 1331 are opposite to the impeller 131, the position of the through hole 1331 is the air inlet end of the heat dissipation fan, and the air flow outside the base 111 can sequentially enter the impeller 131 through the second air inlet 147 and the ventilation openings 1331 under the action of the impeller 131, so that an air inlet flow is formed, and a second air inlet channel 145 is formed between the second air inlet 147 and the impeller 131. The cooling fan 130 of the present embodiment includes only one air outlet end for delivering air flow to the first air outlet 144.

In an embodiment of the present application, as shown in fig. 10 and 18, the base 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 component 200 in the base 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 transmits cooling air flow to the outside of the bottom plate assembly 100 through the second air outlet 148, so as to cool and dissipate heat of electric devices outside the bottom plate assembly 100.

The bottom plate assembly 100 in this embodiment is configured to, by disposing the heat dissipation fan 130 between the first air inlet channel 141 and the first air outlet channel 142, and disposing a part of the electrical components 200 on the first air inlet channel 141 and the first air outlet channel 142 respectively, enable heat dissipation to be performed on a part of electrical components through the air inlet airflow in the first air inlet channel 141 during operation of the heat dissipation fan 130, and simultaneously enable heat dissipation to be performed on another part of electrical components through the air outlet airflow in the first air outlet channel 142, so that heat dissipation to be performed on the electrical components in the first air inlet channel 141 and the first air outlet channel 142 by using the heat dissipation fan 130 to the greatest extent, improve heat dissipation efficiency of the heat dissipation fan 130, and prevent occurrence of a problem that heat cannot be effectively dissipated through the heat dissipation motor 130 due to different installation positions of the electrical components. Meanwhile, a second air outlet 148 is further formed in 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 the second air outlet channel 146 is used for conveying cooling air flow to the outside of the bottom plate assembly 100 through the second air outlet 148, so that electric devices outside the bottom plate assembly 100 are cooled and dissipated, the problem of dissipating heat of a plurality of electric devices in different space positions can be solved at the same time, an additional cooling air channel is not required to be added, and the volume of the whole machine is reduced.

The air-out flow flowing out through the second air outlet 148 is mainly used for radiating electric devices arranged between the box body assembly 500 and the cavity assembly 300, and the electric devices include, but are not limited to, one or more of a furnace lamp, an infrared induction device and a furnace door interlocking switch. Optionally, in order to better utilize the air-out airflow flowing out from the second air outlet 148 to cool and dissipate heat, a separate cooling air duct may be further disposed between the box assembly 500 and the cavity assembly 300, and the electrical device to be cooled may be disposed in the cooling air duct, so as to increase 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 disposed above the motor 132, that is, the motor 132 is disposed closer to a bottom plate portion 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. A rotation shaft hole 1337 is provided at a central position of the motor bracket 133, and an output shaft 1332 of the motor 132 can be connected with the impeller 131 through the rotation shaft hole 1337. First mounting holes 1338 are also provided on both sides or around the rotation shaft hole 1332 for fixing the motor 132 to the motor bracket 133 through screw connection. The outer side wall 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 portion 1115 through screw connection, thereby realizing connection fixation of the heat radiation fan 130 and the base 111.

Further, the motor support 133 includes a support plate 1334, a first shroud 1335 and a second shroud 1336, the first shroud 1335 and the second shroud 1336 being disposed opposite each other along edges of the support plate 1334, opposite ends of the first shroud 1335 and the second shroud 1336 forming a first air outlet end 1332, and opposite ends of the first shroud 1335 and the second shroud 1336 forming 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 is operated, the air-out 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 devices in the first air outlet channel 142, meanwhile, the air-out 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, so that the external electric devices of the bottom plate assembly 100 are cooled, and the problem of heat dissipation of a plurality of electric devices in different space positions is further realized.

Further, 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. Since 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 out of the bottom plate assembly 100, the heating power of the electric devices in the first air outlet channel 142 is larger than that of the electric devices outside the bottom plate assembly 100, and therefore the cooling air flow demand in the first air outlet channel 142 is larger than that of the cooling air flow demand outside the bottom plate assembly 100, and therefore the cross section area of the first air outlet end 1332 is larger than that 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 dimensions of the impeller 131, so that when the impeller 131 rotates, more intake air can be obtained between the adjacent blades 1311, and the air flow of the heat radiation fan 130 can be further improved.

Due to the existence of the filter plate 221, the height dimension of the second air outlet end 1333 of the motor bracket 133 gradually decreases along the self-extending direction. Specifically, the supporting plate 1334 gradually inclines and rises along the own extending direction, and the top positions of the first enclosing plate 1335 and the second enclosing plate 1336 are unchanged, so that the overall height dimension of the second air outlet end 1333 is reduced, and a space is reserved for the filter plate 221 at the bottom of the second air outlet 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, i.e., the impeller 131 is disposed closer to the bottom plate portion 1115 of the base 111 than the motor 132. At this time, the first shroud 1335 and the second shroud 1336 are also disposed below the support plate 1334, which can also achieve the purpose of outputting cooling air flow through the first air outlet end 1332 and the second air outlet end 1333. Accordingly, in order to provide an avoidance space for the filter plate 221, the support plate 1334 is disposed in a horizontal direction, and the first shroud 1335 and the second shroud 1336 gradually incline upward along an extension direction thereof, thereby resulting in a reduction in the overall height dimension of the second air outlet end 1333 and providing an avoidance space 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 being 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 being connected by the fixing ring 1313. Wherein. The fixed ring 1313 is connected to the other end of the vane 1311, so that the air blocking amount of the impeller 131 during air intake can be reduced to the maximum extent, and the air flow amount of the heat dissipation motor 130 can be increased.

Further, the width dimension of the stationary ring 1313 is less than or equal to the width dimension of the blades 1311, thereby preventing the stationary ring 1313 from blocking the flow of intake air to the impeller.

In one example of the present embodiment, the impeller 131 may be a general centrifugal wind wheel. The structure of the heat radiation fan 130 in the present embodiment may be used for the floor assembly 100 in any of the above embodiments.

In an embodiment of the present application, as shown in fig. 10 and 18, the base 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 component 200 in the base 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 provided by the bottom plate section 1115 or the side plate section 1116 of the base 111 toward the impeller 131, and is finally directed toward the outside of the paper surface of fig. 18. The second air outlet 148 and the heat dissipation fan 130 form a second air outlet channel 146, and the second air outlet channel 146 is used for delivering cooling air flow to the outside of the bottom plate assembly 100, so as to cool and dissipate heat of electrical devices outside the bottom plate assembly 100.

According to the embodiment, the first air inlet 143, the first air outlet 144, the second air inlet 147 and the second air outlet 148 are formed in the bottom plate assembly 100, the heat dissipation fan 130 is arranged between the first air inlet channel 141 and the first air outlet channel 142, and part of the electric components 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 heat dissipation fan 130, part of electric components can be dissipated through air inlet air flow in the first air inlet channel 141, and meanwhile, the other part of electric components can be dissipated through air outlet air flow in the first air outlet channel 142, so that the heat dissipation fan 130 dissipates heat to the electric components in the first air inlet channel 141 and the first air outlet channel 142 simultaneously, the heat dissipation efficiency of the heat dissipation fan 130 is improved to the greatest extent, and the problem that the electric components cannot be effectively dissipated through the heat dissipation motor 130 due to different installation positions of the electric components is prevented. Meanwhile, a second air inlet 147 is further formed in 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 and the air outlet 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 cooling air flow in the base 111 is further improved, and the cooling and heat dissipation effects of the heat dissipation fan 130 are 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 electric devices outside the bottom plate assembly 100 are cooled and dissipated, the problem of dissipating heat of a plurality of electric devices in different space positions can be solved at the same time, an additional cooling air channel is not required to be added, and the volume of the whole machine is reduced.

Optionally, the heat dissipation fan 130 includes an impeller 131, a motor 132 and a motor bracket 133, the motor bracket 133 is connected with the bottom plate 1115 of the bottom plate body 110, the motor 132 is disposed on the motor bracket 133, the impeller 131 is connected with an output shaft 1322 of the motor 132 and 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 provided at a central position of the motor bracket 133, and an output shaft 1332 of the motor 132 can be connected with the impeller 131 through the rotation shaft hole 1337. First mounting holes 1338 are also provided on both sides or around the rotation shaft hole 1332 for fixing the motor 132 to the motor bracket 133 through screw connection. The outer side wall 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 portion 1115 through screw connection, thereby realizing connection fixation of the heat radiation fan 130 and the base 111. The center of the motor support 133 is provided with a plurality of ventilation openings 1331, the ventilation openings 1331 are opposite to the second air inlet 147, and air flow outside the base 111 can sequentially enter the impeller 131 through the second air inlet 147 and the ventilation openings 1331 under the action of the impeller 131, so that air intake flow is formed, and a second air intake channel 145 is formed between the second air inlet 147 and the impeller 131.

Optionally, the motor support 133 includes a support plate 1334, a first shroud 1335 and a second shroud 1336, where the first shroud 1335 and the second shroud 1336 are disposed opposite each other along an edge of the support plate 1334, opposite ends of the first shroud 1335 and the second shroud 1336 form a first air outlet end 1332, and opposite ends 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 is operated, the air-out 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 devices in the first air outlet channel 142, meanwhile, the air-out 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, so that the external electric devices of the bottom plate assembly 100 are cooled, and the problem of heat dissipation of a plurality of electric devices in different space positions is further realized.

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 under the motor 132, and the first shroud 1335 and the second shroud 1336 are disposed under the support plate 1334, so that the second air inlet channel 145 can be formed between the impeller 131 and the second air inlet 147, and the air flow rate of the heat dissipation fan 130 can be increased by the second air inlet 147 of the side plate 1115.

The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.

Claims

1. A heat dissipation fan, characterized in that the heat dissipation fan comprises:

an impeller;

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

the motor is arranged on the motor support, at least two air outlet ends are arranged on the motor support, each of the at least two air outlet ends comprises a first air outlet end and a second air outlet end, and the first air outlet ends and the second air outlet ends extend in different directions;

the motor support comprises a support plate, a first enclosing plate and a second enclosing plate, wherein the first enclosing plate and the second enclosing plate are respectively arranged along the edges of the support plate relatively, the opposite ends of the first enclosing plate and the second enclosing plate form a first air outlet end, and the opposite ends of the first enclosing plate and the second enclosing plate form a second air outlet end.

2. The heat dissipation fan of claim 1, wherein the cross-sectional area of the first air outlet end is greater than the cross-sectional area of the second air outlet end.

3. The cooling fan according to claim 1, wherein the height dimension of the second air outlet end is gradually reduced along the extending direction thereof.

4. The heat dissipation fan as recited in claim 3, wherein 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.

5. The cooling fan according to claim 1, wherein the motor bracket is provided with a vent hole arranged opposite to the impeller.

6. The heat dissipation fan according to claim 1, wherein the impeller comprises a blade mounting plate, a fixing ring and a plurality of blades, one ends of the plurality of blades are annularly arranged on the blade mounting plate along the edge position of the blade mounting plate, and the other ends of the plurality of blades are connected through the fixing ring.

7. The heat dissipation fan of claim 6, wherein the width dimension of the retaining ring is less than or equal to the width dimension of the blade.

8. The cooling fan of claim 1, wherein the impeller is a centrifugal wind wheel.

9. A floor assembly, comprising:

a base plate body;

the electric appliance component is arranged in the bottom plate body;

a heat dissipation fan provided in the bottom plate body for dissipating heat from the electrical component, wherein the heat dissipation fan is according to any one of claims 1 to 8.

10. The bottom plate assembly of claim 9, wherein the bottom plate body is provided with 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, a first air outlet end of the motor support extends towards the direction of the first air outlet channel, and a second air outlet end of the motor support extends towards the direction of the second air outlet channel.

11. The base plate assembly of claim 10, wherein the base plate body is further provided with a second air inlet, the second air inlet is opposite to the impeller, and a second air inlet channel is formed between the impeller and the second air inlet.

12. The floor assembly of claim 10, wherein a portion of the electrical components of the electrical assembly are disposed within the first air intake channel, another portion of the electrical components of the electrical assembly are disposed within the first air outlet channel, and the portion of the electrical components within the first air intake channel have a heating power that is less than a heating power of the another portion of the electrical components within the first air outlet channel.

13. A cooking appliance, comprising:

a cavity assembly;

a floor assembly provided below the cavity assembly, wherein the floor assembly is in accordance with any one of claims 10 to 12.

14. The cooking appliance of claim 13, further comprising a housing, wherein a containment space formed between the housing and a sidewall of the cavity assembly is in communication with the second air outlet.

15. The cooking appliance of claim 14, wherein at least one of a stove lamp, an infrared sensing device and a door interlock switch is provided in a containing space formed between the housing and the side wall of the cavity.