CN216675523U - Oven and air duct assembly for oven - Google Patents

Abstract

The utility model relates to the technical field of ovens, in particular to an oven and an air duct assembly for the oven, and aims to solve the problem that a heat dissipation air duct of an existing oven is poor in heat dissipation capacity. The air duct assembly provided by the utility model comprises: a fan having an air inlet and an air outlet; wherein, the air inlet is positioned above the air outlet; a first member; the second component is positioned above the first component and defines an air exhaust air channel with the first component, and the air inlet side of the air exhaust air channel is communicated with an air outlet of the fan; and the third component is positioned below the first component and defines an air inlet duct with the first component, and the air outlet side of the air inlet duct can be communicated with the air inlet of the fan. The air duct assembly for the oven can greatly improve the heat dissipation capacity of the oven.

Description

Oven and air duct assembly for oven

Technical Field

The utility model relates to the technical field of ovens, and particularly provides an oven and an air duct assembly for the oven.

Background

After the baking operation of the oven is completed, a certain amount of grease is often remained on the inner wall of the oven, and in order to efficiently remove the grease, a part of the oven is provided with a high-temperature self-cleaning function, namely, the grease is heated and volatilized by generating high temperature, so that the purpose of automatic cleaning is realized.

The oven equipped with the high-temperature self-cleaning function has high requirements on the heat dissipation capacity of the oven because the oven needs to provide high temperature in a short time, the operation power is high, and the heat generated by electric devices is high. The heat dissipation wind channel of current oven is mostly single wind channel structure, the wind channel sets up in the inner bag top, the air inlet side in wind channel is connected to the air outlet of fan, the top or the top lateral wall of the casing of oven are provided with the air-inlet grille, under the effect of fan, outside air gets into the headspace of oven via the air-inlet grille, and in getting into the wind channel under the effect of fan, the air current in the wind channel takes away the heat that the wind channel was come around at the exhaust in-process, realize the heat dissipation purpose.

However, due to the limitation of installation space, the amount of air that can flow through the existing heat dissipation air duct is limited, the heat dissipation capability is limited, and the heat dissipation requirement during the operation of the self-cleaning function cannot be met.

SUMMERY OF THE UTILITY MODEL

The present invention aims to solve or at least alleviate the above technical problems, i.e. to solve the problem of poor heat dissipation capability of the heat dissipation air duct of the existing oven.

In a first aspect, the present invention provides a duct assembly for an oven, the duct assembly comprising: a fan having an air inlet and an air outlet; the air inlet is positioned above the air outlet; a first member; the second component is positioned above the first component and defines an exhaust air duct with the first component, and the air inlet side of the exhaust air duct is communicated with the air outlet of the fan; and the third component is positioned below the first component and limits an air inlet duct with the first component, and the air outlet side of the air inlet duct can be communicated with the air inlet of the fan.

The air duct component for the oven provided by the utility model has the advantages that the second component is arranged above the first component to construct and form the upper air duct, the third component is arranged below the first component to construct and form the lower air duct, the air inlet side of the upper air duct is connected to the air outlet of the fan, the air outlet side of the lower air duct is communicated with the air inlet of the fan, the corresponding fan is arranged in a manner that the air inlet is positioned above the air outlet, in the double-layer air duct constructed and formed in the way, the lower air duct is used as an air inlet duct, the upper air duct is used as an air exhaust duct, in the circulation process of air in the double-layer air duct, the air in the lower air duct absorbs heat emitted by the working cavity of the circuit board and the inner container and then enters the upper air duct, in the exhaust process of air from the upper air duct, the heat in the environments where the lower air duct and the upper air duct are positioned can be further absorbed, so that more heat is exhausted, the heat dissipation efficiency is greatly improved. Compared with the existing single air duct structure, the double-layer air duct structure almost has multiplied heat dissipation capability, and the heat dissipation capability can meet the requirement of a high-power oven. Compared with the double-layer air duct formed by the existing fan reverse installation (the air inlet is positioned below the air outlet), the air duct structure has the advantages that the size of the lower-layer air duct in the vertical direction is large due to the fact that the lower-layer air duct needs to completely cover the air inlet of the fan, installation space required by the air duct structure is increased, and the size of an oven in the height direction is too large. In addition, because the air inlet of the fan is communicated with the environment where the fan is located, air in the environment (outside the oven) can be further absorbed and enters the upper air duct, the air quantity of the air exhaust duct is increased, the heat dissipation capacity of the air exhaust duct is further improved, and the heat dissipation effect of the air duct assembly is improved.

The fan in the utility model can adopt a cross-flow fan, an axial flow fan or other types of fans. When the air inlet of the fan is positioned above the air outlet, the fan is normally installed, otherwise, the fan is reversely installed.

The first member in the present invention may be a plate-like structure (flat plate or arc plate), a case-like structure, or the like. The second member may be a plate-like structure, a case-like structure, or the like. The third member may be a plate-like structure, a case-like structure, or the like. Alternatively, the first member may be integrally formed with the third member, and then the second member may be coupled to the upper surface of the first member to construct the double duct structure. For convenient connection, it is preferable that the first member is formed in a plate-like structure, and the second member and the third member are formed in a case-like structure.

In addition, for the air inlet duct and the air exhaust duct formed by the structure, the air inlet side of the air inlet duct and the air outlet side of the air exhaust duct can be adjacent or far away.

In addition, there are multiple implementation methods in the air-out side of the air inlet duct and the air inlet of the fan. For example, the first member is provided with one or more openings corresponding to the position of the air inlet duct, the opening structure forms the air outlet side of the air inlet duct, and at the moment, the opening is communicated with the space where the fan is located, so that the opening is indirectly communicated with the air inlet of the fan. Or, an opening is arranged at the position of the third component corresponding to the air inlet duct to serve as an air outlet side, and the air outlet of the opening is guided to an air inlet of the fan by means of a pipeline; other implementations are of course possible.

With respect to the above-described air duct assembly for an oven, in some possible embodiments, the first member is provided with at least one opening corresponding to the position of the air intake duct, and the at least one opening is configured to form an air outlet side of the air intake duct.

Thus, an embodiment of the air inlet duct communicating with the air inlet of the fan is provided. Through set up the opening on first component, realized the effect of the air inlet wind channel air-out that makes progress, realized the air-out side in air inlet wind channel and just adorn the purpose of the air intake intercommunication of fan ingeniously.

It is understood that the openings configured to form the air outlet side of the inlet duct may also be formed on both sides of the inlet duct in the direction of airflow.

With respect to the above-mentioned air duct assembly for an oven, in some possible embodiments, a projection of the second member and the third member on a horizontal plane has a non-overlapping area, and at least a portion of the at least one opening is disposed at a portion of the first member and/or the third member corresponding to the non-overlapping area.

This provides a specific embodiment of the opening. Through such an arrangement, communication between the air ducts is achieved with a simple structure.

With respect to the above-described air duct assembly for an oven, in some possible embodiments, the fan is a crossflow fan.

Through adopting cross-flow fan, can further reduce the holistic volume of wind channel subassembly, be favorable to the size control of oven.

With respect to the air duct assembly for an oven described above, in some possible embodiments, the at least one opening is provided at a position of the first member near an end of the cross-flow fan in an axial direction thereof.

Through setting up like this, can make the air-out side in air inlet duct more be close to the air intake of fan, and then make the air current between air inlet duct and the fan air intake circulate the route more smoothly, be favorable to improving the radiating efficiency of wind channel subassembly.

It will be appreciated that the openings may also be provided at any location of the first member adjacent the main portion of the crossflow blower, provided that air exiting the inlet duct is ensured to enter the blower smoothly.

With respect to the above-mentioned air duct assembly for an oven, in some possible embodiments, in a case where the opening includes a plurality of openings, a flow dividing member is further provided in the air intake duct so as to: the air entering the air inlet duct can be distributed to positions corresponding to different openings under the action of the flow dividing member.

Through setting up the reposition of redundant personnel component, under the opening includes a plurality of situations, can shunt the air that gets into in the wind channel with the help of the reposition of redundant personnel component to make the air quantity of each opening outflow relatively unanimous, be favorable to the even heat dissipation in air inlet wind channel below space.

The arrangement of the flow dividing member can be various. For example, the flow diversion member can be one or more baffles disposed or formed on the first member or the third member.

With regard to the above-mentioned air duct assembly for an oven, in some possible embodiments, the air inlet duct is divided by the flow dividing member to form a plurality of sub air inlet ducts corresponding to the number of openings.

Thus, a specific embodiment of a flow diversion member is provided. For example, the number of the openings is two, the flow dividing component is a partition plate arranged in the air inlet duct, the partition plate separates the air inlet duct to form two parallel sub air inlet ducts, and each sub air inlet duct corresponds to one opening to serve as the air outlet side of the duct; or the flow dividing component is two clapboards which are arranged in the air inlet duct and have included angles with each other, air does not flow in the area clamped between the two clapboards, each clapboard and the corresponding duct wall are jointly constructed to form a sub air inlet duct, and the sub air inlet duct constructed in this way is usually a variable cross-section duct. It is understood that other implementations of the flow diversion member are possible.

With respect to the above-described duct assembly for an oven, in some possible embodiments, the sub-inlet ducts have decreasing cross-sectional areas as viewed in the air flow direction.

Thus, a preferred embodiment of the flow dividing member is provided. Through setting up like this, can guide the circulation of air in the air inlet duct better for the velocity of flow of air flow in sub air inlet duct increases gradually, can be through the air-out side in air inlet duct and reach the air intake of fan faster like this, thereby promotes circulation of air efficiency, promotes the radiating efficiency.

It can be understood that the realization mode of the variable cross-section air duct can be realized by the arrangement mode of the flow dividing component and can also be realized by the structure of the air inlet duct body. For example, in the case that the body structure of the air inlet duct is of a uniform cross section, a flow dividing member having an included angle may be provided; or, under the condition that the body structure of the air inlet duct is a structure with gradually reduced sectional area along the air circulation direction, a plate-shaped flow dividing component is arranged to construct a sub air inlet duct with variable section; or the middle part of the third component is protruded upwards to form a triangular boss structure which is abutted against the lower surface of the first component, so that two parallel sub air inlet channels with gradually reduced sectional areas can be formed; other configurations are of course possible.

With respect to the above-described air duct assembly for an oven, in some possible embodiments, the flow dividing member is disposed on a side of the third member adjacent to the first member.

Thus, a specific embodiment of a flow diversion member is provided.

With respect to the above-described air duct assembly for an oven, in some possible embodiments, the flow dividing member is integrally formed with the third member.

Through constructing the reposition of redundant personnel component like this, utilize the structure of third component self to realize the reposition of redundant personnel function, can make the wind channel structure simpler, change processing.

The way of integrally forming the flow dividing member and the third member may be various, for example, the flow dividing member may be a partition structure formed by extending vertically or obliquely upward from the upper surface of the third member, or may be a boss structure formed by protruding upward from the middle of the third member.

In a second aspect, the present invention also provides an oven including the air duct assembly for an oven according to any one of the preceding claims.

It can be understood that, since the oven is configured with the air duct assembly according to any one of the foregoing technical solutions, the oven has all the technical effects of the air duct assembly, and details are not described herein.

Drawings

Preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

fig. 1 is a schematic view of an internal structure of an oven according to an embodiment of the present invention, in which an assembly structure of an air duct assembly is shown;

fig. 2 is a schematic view of an internal structure of an oven according to an embodiment of the present invention, in which an explosion structure of a duct assembly is shown;

FIG. 3 is a schematic, half-sectional view of an air duct assembly according to an embodiment of the present invention, illustrating an air flow path;

list of reference numerals:

1. an oven; 10. an inner container; 100. a working chamber; 20. an air duct assembly; 201. a cross-flow fan; 2010. an air inlet; 2011. an air outlet; 202. a first member; 2020. an opening; 203. a second member; 204. a third member; 205. a flow dividing member; 206. a sub air intake duct; 207. an air exhaust duct; 30. a door frame; 300. and a through hole.

Detailed Description

First, it should be noted that the following embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present invention. It will be understood by those skilled in the art that the present invention may be practiced without some of these specific details.

In the description of the present invention, the terms "upper", "lower", "inner", "outer", "vertical", "horizontal", "top", "bottom", and the like, which indicate directions or positional relationships, are based on directions or positional relationships in actual use, and are used for convenience of description only, and do not indicate or imply that the apparatus to be protected must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The oven and the air duct assembly thereof provided by the embodiment of the utility model are described below with reference to the accompanying drawings.

Referring to fig. 1 and 2, an oven 1 according to an embodiment of the present invention includes a housing, and an inner container 10, a heating assembly, an air duct assembly 20, and the like disposed in the housing. The heating assembly comprises heating pipes which are distributed on the inner side of the top and/or the inner side of the bottom of the inner container 10, and heat is generated after the heating pipes are powered on, so that the food materials in the working cavity 100 are baked. Multiple bakeware or grill pans or grills can typically be placed within the work chamber 100 to cook multiple food items simultaneously.

The air duct assembly 20 is disposed above the inner container 10. When the oven 1 works, part of heat in the working cavity 100 overflows out of the inner container 10, and meanwhile, components on the electric control board also generate heat, and if the heat cannot be exhausted in time, the circuit board can be overheated and damaged. Accordingly, embodiments of the present invention dissipate heat in the headspace of the oven 1 through the provision of the air duct assembly 20.

With continued reference to fig. 1 and 2, the air duct assembly 20 in the present embodiment includes a first member 202, a second member 203, and a third member 204. The first member 202 is a flat plate structure and the second member 203 and the third member 204 are each a cage-like structure in which the side wall of the second member 203 extends downward from the main body portion thereof and the side wall of the third member 204 extends upward from the main body portion thereof. In the state of installation, the second member 203 and the first member 202 are constructed to form an upper air duct which is used as an exhaust air duct 207; the third member 204 and the first member 202 form a lower air duct, which serves as an air inlet duct, thereby forming a double-layer air duct structure with an air inlet duct at the lower part and an air outlet duct 207 at the upper part. In this air duct structure, the air intake side of the intake air duct and the air outlet side of the exhaust air duct 207 are adjacent to each other.

Referring to fig. 2 and 3, the duct assembly 20 further includes a cross-flow fan 201 communicating the intake duct and the exhaust duct 207. The cross-flow fan 201 comprises a volute, a motor and a cross-flow fan arranged in the volute, in a mounted state, the axis of the cross-flow fan extends along the length direction of the liner 10, an air inlet 2010 of the cross-flow fan 201 is located above an air outlet 2011, the air inlet 2010 is exposed in an environment where an upper-layer air duct is located, and the air outlet 2011 of the cross-flow fan 201 is communicated with the air inlet side of the air exhaust duct 207. As shown in fig. 3, the cross flow fan is driven by the motor to rotate clockwise, and the air in the environment of the upper air duct enters the volute under the driving of the fan, and then is discharged into the air exhaust duct 207 from the air outlet 2011 of the volute, and further discharged into the indoor environment. In this embodiment, the main body portion of the second member 203 is arranged in an obliquely downward configuration such that the sectional area of the air outlet side of the discharge duct 207 configured to be formed is smaller than the sectional area of the air inlet side.

With continued reference to fig. 1, as viewed from above and downward of the air duct member, there is a non-overlapping area in the projection of the second member 203 and the third member 204 on the horizontal plane, and two openings 2020 are provided at positions of the first member 202 corresponding to the non-overlapping area, one of the openings being close to the left end portion of the crossflow blower 201 and the other opening being close to the right end portion of the crossflow blower 201. The two openings 2020 are configured to form an air outlet side of the air inlet duct, and air in the air inlet duct can enter the space above the first member 202 via the two openings 2020 and further enter the crossflow blower 201.

Because the two openings 2020 in this embodiment are distributed on two sides of the cross-flow fan 201 and are relatively far away, the flow dividing member 205 is further disposed in the air inlet duct, the air inlet duct is divided by the flow dividing member 205 to form two parallel sub air inlet ducts 206, and each sub air inlet duct 206 corresponds to one opening 2020 and serves as an air outlet of the sub air inlet duct 206. Specifically, as shown in fig. 2, the middle of the third member 204 in this embodiment protrudes upward to form a triangular boss structure, which functions as a flow dividing member to guide the air at the air inlet into different sub-air inlet channels 206 for circulation. In the mounted state, the top surface of the triangular boss structure abuts against the lower surface of the first member 202, and the cross-sectional area of the two sub intake air ducts 206 formed by the structure gradually decreases in the air flow direction. The heat in the space region below the boss structure can be directly transferred into the exhaust duct 207 above the first member 202 by heat transfer.

In order to make the air amount entering each sub air intake duct 206 uniform, a plurality of through holes 300 are further provided at positions corresponding to the air intake side of the air intake duct at the top of the door frame 30 of the oven 1, and the indoor air enters the air intake duct through the through holes 300 and further enters different sub air intake ducts 206 under the guidance of the boss structure. These through holes 300 may function as a uniform flow. Alternatively, the air inlet side of the air inlet duct can be separately provided with a flow-equalizing member with a plurality of through holes. Of course, other structural members capable of achieving the uniform flow effect can be used.

The heat dissipation principle of the air duct assembly 20 of the present invention will be described with reference to fig. 3.

As shown in fig. 3, when the oven 1 performs self-cleaning during or after baking, the cross-flow fan 201 is in operation, negative pressure is formed at the air inlet of the running cross-flow fan 201, air in the space where the fan is located is discharged from the air exhaust duct 207 under the action of the negative pressure, so that indoor air enters the air inlet duct from the air inlet side of the air inlet duct on the one hand, and air in the air inlet duct further enters the space where the fan is located through the opening 2020 under the action of the fan, thereby forming a passage for air circulation. During operation, heat in the working chamber 100 will escape outwards, and at the same time, the electric devices on the electric control board will also dissipate a large amount of heat. The heat dissipated from the working chamber 100 is transferred upwards to the air inlet duct, and during the air circulation process, the heat entering the air inlet duct is gradually transferred to the air outlet duct and discharged, and meanwhile, the heat in the environment where the air exhaust duct 207 is located is further transferred to the air exhaust duct 207 and discharged to the indoor along with the air flow in the air exhaust duct 207, thereby achieving the purpose of heat dissipation.

The utility model provides an air duct component for an oven, which is characterized in that a second component is arranged above a first component to construct and form an upper air duct, a third component is arranged below the first component to construct and form a lower air duct, the air inlet side of the upper air duct is connected to the air outlet of a fan, the air outlet side of the lower air duct is communicated with the air inlet of the fan, and the corresponding fan is arranged in a way that the air inlet is positioned above the air outlet, in the double-layer air duct formed by the construction, the lower air duct is used as an air inlet duct, the upper air duct is used as an air exhaust duct, in the circulation process of air in the double-layer air duct, the air in the lower air duct absorbs heat emitted by a circuit board and a working cavity of an inner container and then enters the upper air duct, in the exhaust process of the upper air duct, the heat in the environments where the lower air duct and the upper air duct are positioned can be further absorbed, so as to exhaust more heat, the heat dissipation efficiency is greatly improved. Compared with the existing single air duct structure, the double-layer air duct structure almost has multiplied heat dissipation capability, and the heat dissipation capability can meet the requirement of a high-power oven. Compared with the double-layer air duct formed by the existing fan reverse installation (the air inlet is positioned below the air outlet), the air duct structure has the advantages that the size of the lower-layer air duct in the vertical direction is large due to the fact that the lower-layer air duct needs to completely cover the air inlet of the fan, installation space required by the air duct structure is increased, and the size of an oven in the height direction is too large. In addition, because the air inlet of the fan is communicated with the environment where the fan is located, air in the environment (outside the oven) can be further absorbed and enters the upper air duct, the air quantity of the air exhaust duct is increased, the heat dissipation capacity of the air exhaust duct is further improved, and the heat dissipation effect of the air duct assembly is improved.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the utility model, and the technical scheme after the changes or substitutions can fall into the protection scope of the utility model.

Claims (10)

1. An air duct assembly for an oven, the air duct assembly comprising:

a fan having an air inlet and an air outlet;

the air inlet is positioned above the air outlet;

a first member;

the second component is positioned above the first component and defines an exhaust air duct with the first component, and the air inlet side of the exhaust air duct is communicated with the air outlet of the fan;

and the third component is positioned below the first component and limits an air inlet duct with the first component, and the air outlet side of the air inlet duct can be communicated with the air inlet of the fan.

2. The air duct assembly for an oven of claim 1, wherein the first member is provided with at least one opening at a location corresponding to the inlet air duct, the at least one opening configured to form an air outlet side of the inlet air duct.

3. The air duct assembly for an oven of claim 2, wherein there is a non-overlapping area of projection of the second member and the third member on a horizontal plane, at least a portion of the at least one opening being provided to a portion of the first member and/or the third member corresponding to the non-overlapping area.

4. The air duct assembly for an oven of claim 3, wherein the fan is a crossflow fan.

5. The air duct assembly for an oven of claim 4, wherein the at least one opening is provided at a position of the first member near an end of the cross-flow fan in an axial direction thereof.

6. The duct assembly for an oven of claim 5, wherein in case the opening comprises a plurality of openings, a flow diversion member is further provided within the intake duct to:

the air entering the air inlet duct can be distributed to positions corresponding to different openings under the action of the flow dividing member.

7. The air duct assembly for an oven of claim 6, wherein the air inlet duct is divided by the flow dividing member to form a plurality of sub air inlet ducts corresponding to the number of openings.

8. The duct assembly for an oven of claim 7, wherein the sub-inlet ducts have decreasing cross-sectional areas as viewed in the air flow direction.

9. The air duct assembly for an oven of claim 8, wherein the flow splitter member is disposed on a side of the third member proximate the first member; or

The shunt member is integrally formed with the third member.

10. An oven, characterized in that it comprises a duct assembly for an oven according to any one of claims 1 to 9.

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