CN209819643U - Air flue structure, fan and electric oven - Google Patents

Abstract

The utility model discloses a wind channel structure, fan and electric oven. The air channel structure comprises an oil smoke conveying air channel, wherein one end of the oil smoke conveying air channel is provided with an oil smoke inlet, the other end of the oil smoke conveying air channel is provided with an oil smoke outlet, the area of the oil smoke inlet is larger than that of the oil smoke outlet, the oil smoke outlet is located on the central axis of the oil smoke inlet, and the oil smoke conveying air channel is arranged between the two tail ends of the oil smoke inlet and the oil smoke outlet in a converging mode to enable oil smoke conveying paths between the two ends. The utility model discloses a wind channel structure overall structure is simple, has the oil smoke collection ability of preferred and the conveying effect of oil smoke.

Description

Air flue structure, fan and electric oven

Technical Field

The utility model relates to a domestic appliance especially relates to a wind channel structure, fan and electric oven.

Background

The oil smoke contains various harmful substances such as acrolein, benzene, formaldehyde, crotonaldehyde and the like, the oil smoke generated in the cooking process needs to be reduced by being sucked by people by adopting an oil smoke extraction system, and the current environmental protection regulation is to collect and separate the oil smoke to reduce or even avoid directly discharging the oil smoke into the air.

An electric oven is a common barbecue tool, but a large amount of oil smoke is generated during barbecue. Conventional electric ovens generally have no treatment for the fumes or have a direct exhaust system for the fumes, the harmful fumes being directly exhausted into the air. For example, chinese patent CN201720943392 discloses a healthy barbecue oven with a built-in smoke exhaust system, which includes an oven body, a heat source, a barbecue carrier, a smoke exhaust system, a smoke conveying pipe, a filter and a smoke exhaust hole, wherein a smoke collecting cover is disposed above the barbecue carrier, the smoke collecting cover is connected to the smoke conveying pipe, the smoke exhaust system is a high-suction fan and disposed in the smoke conveying pipe, the smoke exhaust system extracts smoke in the barbecue process and conveys the smoke through the smoke conveying pipe, the smoke is conveyed to the filter through the smoke conveying pipe, and harmful gases in the smoke are adsorbed by the filter. This technical scheme needs set up above the barbecue carrier and gather the cigarette lid and collect the oil smoke that the barbecue produced, and pass through oil pumping cigarette system, defeated tobacco pipe and send the oil smoke away again, and the user need open repeatedly and close and gather the cigarette lid when getting, putting the barbecue food material in the use, therefore has the defect that the structure is complicated and the user of being inconvenient in uses.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving to a certain extent and having the structure complicated and influence the defect that the user used when current oven realizes that the oil smoke is collected, disclose a relative simple structure and the wind channel structure of oil smoke conveying effect preferred, have the fan of wind channel structure and adopt the electric oven that this fan realized.

The utility model discloses a following technical scheme realizes: an air channel structure comprises an oil smoke conveying air channel, wherein an oil smoke inlet is formed in one end of the oil smoke conveying air channel, an oil smoke outlet is formed in the other end of the oil smoke conveying air channel, the area of the oil smoke inlet is larger than that of the oil smoke outlet, the oil smoke outlet is located on the central axis of the oil smoke inlet, and the oil smoke conveying air channel is arranged between the two tail ends of the oil smoke inlet and the oil smoke outlet in a converging mode to enable oil smoke conveying paths between the two ends of.

The oil smoke conveying air channel comprises an air collecting channel and an air guide channel, the air collecting channel is communicated with the air guide channel through an arc transition part adopting an arc transition design, an oil smoke inlet is formed in the air collecting channel, and an oil smoke outlet is formed in the air guide channel.

Wherein, the two sides of the air guide channel are arranged in a convergence way of a linear necking or an arc necking from the arc transition part to the oil smoke outlet.

The air collecting channel and the air guide channel are not in the same plane, and the air collecting channel and the air guide channel are oppositely bent through the arc transition part.

The oil fume conveying air duct is formed by assembling an air duct lower cover made of heat-resistant non-metal materials and an air duct upper cover made of heat-resistant metal materials, an oil fume inlet is formed between the upper tail end of the air duct lower cover and the upper tail end of the air duct upper cover, and an oil fume outlet is formed in the lower tail end of the air duct lower cover.

Wherein, a seam allowance structure is arranged between the air duct lower cover and the air duct upper cover.

Wherein, the oil smoke outlet is provided with a lug boss which has a smooth inner surface and is arranged in a circular arc transition way.

The utility model discloses a fan, this fan including the spiral case that has air intake and air exit and the wind wheel of setting in the spiral case to and above-mentioned wind channel structure, this oil smoke export is linked together with the air intake of spiral case.

The utility model discloses an electric oven, including the base, locate the heat-generating body on the base and locate the barbecue supporting part of heat-generating body top, the side of this barbecue supporting part is equipped with ventilative groove, is equipped with between barbecue supporting part and base the fan, wherein, the appearance of oil smoke entry and the appearance phase-match in ventilative groove and oil smoke entry link to each other with ventilative groove is sealed.

Wherein, the barbecue bearing part is a rectangular barbecue plate or a grill, and the ventilation groove is arranged on one side edge of the barbecue bearing part with longer size.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses a wind channel structure overall structure is simple, because set up the oil smoke delivery path that the oil smoke export reaches oil smoke entry two ends respectively equal thus convey negative pressure from the oil smoke export to the two ends of oil smoke entry evenly, ensure that the oil smoke entry suction is comparatively even on the whole, make the wind channel structure have better oil smoke collection ability; furthermore, after the two tail ends of the oil smoke inlet and the oil smoke outlet are all arranged in a converging mode, the oil smoke flowing path is improved to enable oil smoke to be balanced, the negative pressure suction force of different positions of the oil smoke inlet is balanced, the flowing path of the oil smoke sucked from different positions of the oil smoke inlet in the oil smoke conveying air channel is the shortest, the oil smoke sucked from different positions of the oil smoke inlet in the oil smoke conveying air channel can hardly generate turbulence and can basically flow to the oil smoke outlet in a flat flow mode and then enters the volute, the oil smoke conveying capacity is improved, and the phenomenon that the oil smoke cannot be discharged quickly due to the fact that the oil smoke is turbulent in the oil smoke conveying air channel after entering the oil smoke conveying air channel is avoided, so that the oil smoke removing or oil smoke collecting.

Drawings

Fig. 1 is a schematic perspective exploded view of a fan.

Fig. 2 is a perspective view of the air duct structure from one viewing angle.

Fig. 3 is a perspective view of the air duct structure from another perspective.

Fig. 4 is a schematic view of the internal structure of the air duct structure.

Fig. 5 is a schematic structural view of an embodiment of an electric oven.

Detailed Description

To further clarify the technical solutions and effects adopted by the present application to achieve the intended purpose, the following detailed description is given with reference to the accompanying drawings and preferred embodiments according to the present application. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

As shown in fig. 1, the utility model discloses a fan, this fan includes: the air duct structure comprises a volute 4 with an air inlet 41 and an air outlet 42, a wind wheel 6 (the wind wheel 6 is generally a centrifugal wind wheel) arranged in the volute 4, and an air duct structure communicated with the air inlet 41, wherein the air duct structure comprises an oil smoke conveying air duct 5 with an oil smoke inlet 511 at one end and an oil smoke outlet 521 at the other end, and the oil smoke outlet 521 is communicated with the air inlet 41 of the volute 4.

The fan is used as a central component for realizing oil smoke removal or oil smoke separation, and can be widely used in cooking equipment for generating oil smoke, such as a range hood, various ovens and the like. The basic working principle of the fan is as follows: when the wind wheel 6 is driven by external force to rotate at a high speed, negative pressure is generated in the volute 4, the negative pressure is transmitted into the oil smoke conveying air duct 5 through the oil smoke outlet 521, so that negative pressure suction force on oil smoke is generated at the oil smoke inlet 511, the oil smoke moves to the oil smoke outlet 521 after being sucked from the oil smoke inlet 511 and then enters the volute 4 and is in a high-speed centrifugal rotation process along with the turbine 6, and small liquid containing oil in the oil smoke is thrown out by centrifugal force and hits the inner wall of the volute 4 to form oil liquid, so that oil smoke separation is realized.

The oil smoke outlet 521 has a boss with a smooth inner surface and an arc transition, the air guide channel 52 is connected to the air inlet 41 of the volute 4 by the boss, and the resistance of the oil smoke when changing the movement path can be reduced, so that the oil smoke can enter the volute 4 quickly and smoothly.

As further shown in fig. 2 and 3, the area of the oil smoke inlet 511 is larger than that of the oil smoke outlet 521, so as to improve the oil smoke collecting effect of the oil smoke inlet 511. The oil smoke outlet 521 is located on the central axis of the oil smoke inlet 511, and the oil smoke conveying duct 5 is disposed between the two ends of the oil smoke inlet 511 and the oil smoke outlet 521 in a converging manner, so that the oil smoke conveying paths between the two ends of the oil smoke inlet 511 and the oil smoke outlet 521 are equal, which has the advantages that: when the wind wheel 6 is driven by external force to rotate at high speed to generate negative pressure in the volute 4, the negative pressure is transmitted into the oil smoke conveying air duct 5 through the oil smoke outlet 521 so as to enable the oil smoke inlet 511 to generate suction force on oil smoke, and the oil smoke conveying paths from the oil smoke outlet 521 to the two tail ends of the oil smoke inlet 511 are equal, so that the negative pressure is uniformly transmitted to the two tail ends of the oil smoke inlet 511 through the outlet 521, and the suction force on the oil smoke inlet 511 is ensured to be uniform so as to have better oil smoke collecting capacity; moreover, after the two ends of the oil smoke inlet 511 are all arranged between the oil smoke outlet 521 in a converging manner, the oil smoke flowing path is improved to allow oil smoke and balance the negative pressure suction force of different positions of the oil smoke inlet 511, the flowing path of the oil smoke sucked from different positions of the oil smoke inlet 511 in the oil smoke conveying air duct 5 is shortest, and the oil smoke sucked from different positions of the oil smoke inlet 511 into the oil smoke conveying air duct 5 hardly generates turbulence and flows fast to the oil smoke outlet 521 and then enters the volute 4 in a flat flow manner, so that the oil smoke conveying capacity is improved, and the phenomenon that the oil smoke enters the oil smoke conveying air duct 5 and then is turbulent to be discharged fast in the oil smoke conveying air duct 5 so as to influence the oil smoke removal or oil smoke collection effect is avoided.

In one embodiment, the lampblack conveying air channel 5 comprises an air collecting channel 51 for collecting lampblack and an air guiding channel 52 for guiding the lampblack in the air collecting channel 51 into the volute 4, the air collecting channel 51 is communicated with the air guiding channel 52 through an arc transition part 53, namely the arc transition part 53 with an arc transition design is adopted at the connecting part of the air collecting channel 51 and the air guiding channel 52, so that the resistance to the lampblack entering the air guiding channel 52 from the air collecting channel 51 is reduced; in addition, the oil smoke inlet 511 is arranged on the air collecting channel 51, the oil smoke outlet 521 is arranged on the air guiding channel 52, the two sides of the air guiding channel 52 are arranged from the arc transition part 53 to the oil smoke outlet 521 by adopting the convergence of a straight line necking or an arc necking,

so as to gradually guide the oil smoke entering the air guiding channel 52 to the oil smoke outlet 521 with a small resistance, so that the oil smoke can enter the volute 4 through the oil smoke outlet 521. In addition, in order to save space, the oil smoke conveying duct 5 adopts a non-straight plate design so that the air collecting channel 51 and the air guiding channel 52 are not in the same plane, and therefore, the air guiding channel 52 can be bent relative to the air collecting channel 51 through the arc transition part 53.

Further referring to fig. 4, in an embodiment, in order to save manufacturing cost, the oil smoke conveying duct 5 is assembled by a duct lower cover 501 made of a heat-resistant non-metal material and a duct upper cover 502 made of a heat-resistant metal material, a seam allowance structure is arranged between the duct lower cover 501 and the duct upper cover 502 to achieve rapid positioning and assembly and improve sealing performance of the oil smoke conveying duct 5, an oil smoke inlet 511 is formed between an upper end of the duct lower cover 501 and an upper end of the duct upper cover 502, and an oil smoke outlet 521 is arranged at a lower end of the duct lower cover 501. Moreover, a plurality of first studs and second studs are arranged on the outer side surfaces of the air duct lower cover 501 and the air duct upper cover 502, when the air duct lower cover 501 and the air duct upper cover 502 are assembled through a spigot structure, the first studs of the air duct lower cover 501 and the first studs of the air duct upper cover 502 are overlapped to form a first fixing portion 54, and the air duct lower cover 501 and the air duct upper cover 502 are fixed and assembled by screwing the first fixing portion 54 through screws; and the second stud of the air duct lower cover 501 and the second stud of the air duct upper cover 502 are overlapped to form a second fixing portion 55, and the oil smoke conveying air duct 5 is fixedly connected with the volute 4 by passing through the second fixing portion 55 through a screw. For example, the duct lower cover 501 is made of a wooden plate, a flame retardant cardboard or a flame retardant plastic plate, and the duct upper cover 502 is made of an iron plate or an aluminum plate.

In addition, in order to protect the components such as the air duct lower cover 501 and the wind wheel 6, a heat insulation layer is further arranged on the upper side surface of the air duct upper cover 502, for example, the heat insulation layer is made of flame-retardant heat insulation cotton, and the heat insulation layer reduces the radiation of heat to the components such as the air duct lower cover 501 and the wind wheel 6 so as to improve the thermal reliability of the components.

Further, referring to fig. 5, the electric oven includes a base 7, a heating element 8 (the heating element 8 generally adopts an electric heating wire or an electric heating tube) disposed on the base 7, and a barbecue supporting portion 9 (the barbecue supporting portion 9 generally represents a grill or a barbecue tray) disposed above the heating element 8, wherein a ventilation slot 91 is disposed on a side of the barbecue supporting portion 9, the above-mentioned fan is disposed between the barbecue supporting portion 9 and the base 7, and a fume inlet 511 of the fume conveying duct 5 is communicated with the ventilation slot 91. Generally, a wind wheel 6 of a fan is driven to rotate by a motor 2 mounted on a base 7.

As shown in fig. 4 and 5, the shape and structure of the oil smoke inlet 511 are matched with the shape of the ventilation groove 91, and a sealing ring 59 is arranged between the oil smoke inlet 511 and the ventilation groove 91 to ensure the sealing performance of the connection between the two; further, in the above-described case,

in order to ensure that the oil smoke generated by the grill bearing part 9 during the grilling process is sucked into the oil smoke transfer duct 5 from the ventilation groove 91 as much as possible, the ventilation groove 91 has an extension length on the peripheral side of the grill bearing part 9 of at least 1/4 of the total length of the peripheral side of the grill bearing part 9.

In a preferred embodiment, the barbecue carrying part 9 is a rectangular barbecue tray or grill, one of the longer sides of the barbecue carrying part 9 is provided with the ventilation slot 91, and the shape structure of the oil smoke inlet 511 is matched with the shape of the ventilation slot 91. Therefore, when food is placed in the barbecue carrying part 9, only one side of the barbecue carrying part 9 with longer size generates negative pressure suction force, so that oil smoke generated by barbecue is gradually and rapidly sucked into the oil smoke conveying air duct 5 from near to far away from the oil smoke inlet 511 in a advection mode, the whole oil smoke removing effect is better, and smokeless barbecue cooking can be basically realized.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. An air channel structure comprises an oil smoke conveying air channel (5) with an oil smoke inlet (511) at one end and an oil smoke outlet (521) at the other end, and is characterized in that the area of the oil smoke inlet (511) is larger than that of the oil smoke outlet (521), the oil smoke outlet (521) is located on the central axis of the oil smoke inlet (511), and the oil smoke conveying air channel (5) is arranged between the two tail ends of the oil smoke inlet (511) and the oil smoke outlet (521) in a converging mode to enable oil smoke conveying paths between the two ends of the oil smoke inlet (511) and the oil smoke outlet (521) to be equal.

2. The air channel structure according to claim 1, wherein the lampblack conveying air channel (5) comprises an air collecting channel (51) and an air guiding channel (52), the air collecting channel (51) is communicated with the air guiding channel (52) through an arc transition part (53) adopting an arc transition design, the lampblack inlet (511) is arranged on the air collecting channel (51) and the lampblack outlet (521) is arranged on the air guiding channel (52).

3. The air duct structure of claim 2, wherein the two sides of the air guiding channel (52) are arranged in a manner of converging a straight line necking or an arc necking from the arc transition part (53) to the oil smoke outlet (521).

4. The air duct structure according to claim 2, wherein the air collecting channel (51) and the air guiding channel (52) are not in the same plane, and the air collecting channel (51) and the air guiding channel (52) are oppositely bent through the arc transition part (53).

5. The air duct structure according to claim 1, characterized in that the oil smoke conveying air duct (5) is assembled by an air duct lower cover (501) made of heat-resistant non-metal material and an air duct upper cover (502) made of heat-resistant metal material, an oil smoke inlet (511) is formed between the upper end of the air duct lower cover (501) and the upper end of the air duct upper cover (502), and the oil smoke outlet (521) is arranged at the lower end of the air duct lower cover (501).

6. The air duct structure according to claim 5, characterized in that a spigot structure is arranged between the air duct lower cover (501) and the air duct upper cover (502).

7. The air duct structure according to any one of claims 1 to 6, wherein the oil smoke outlet (521) has a convex platform with a smooth inner surface and a circular arc transition.

8. A fan comprising a volute (4) having an air inlet (41) and an air outlet (42), and a wind wheel (6) disposed in the volute (4), characterized by further comprising an air duct structure according to any one of claims 1-7, wherein the fume outlet (521) is in communication with the air inlet (41) of the volute (4).

9. An electric oven, comprising a base (7), a heating element (8) arranged on the base (7) and a barbecue bearing part (9) arranged above the heating element (8), wherein the side edge of the barbecue bearing part (9) is provided with a ventilation groove (91), characterized in that a fan according to claim 8 is arranged between the barbecue bearing part (9) and the base (7), wherein the shape of the oil smoke inlet (511) is matched with the shape of the ventilation groove (91) and the oil smoke inlet (511) is connected with the ventilation groove (91) in a sealing way.

10. The electric grill of claim 9 wherein the grill carrier (9) is a rectangular grill plate or grill, and the air-permeable grooves (91) are formed over one of the longer sides of the grill carrier (9).