CN218495048U - Cooking fume exhauster - Google Patents

Abstract

The utility model discloses a range hood, which comprises an air inlet component and a fan frame for arranging a fan system, wherein the air inlet component comprises a first air inlet structure and a second air inlet structure which are arranged at intervals on the left and the right; the first air inlet structure comprises a first smoke collecting cover and a first pipeline, wherein two ends of the first pipeline are respectively in rotary connection with the fan frame and the first smoke collecting cover and are used for communicating the fan frame and the first smoke collecting cover with fluid; the second air inlet structure comprises a second smoke collecting cover and a second pipeline, wherein two ends of the second pipeline are respectively in rotary connection with the fan frame and the second smoke collecting cover and are used for communicating the fan frame and the second smoke collecting cover with fluid; the rotation axes of the first duct and the second duct extend in the front-rear direction. Compared with the prior art, the utility model has the advantages of: the range of smoke gathering can be adjusted, the smoke gathering range can even cover the upper part of the cooking bench outside the cooker, the sectional area change of fluid is small when the fluid flows in the pipeline, and the fluid flows stably.

Description

Cooking fume exhauster

Technical Field

The utility model relates to an oil smoke purifier, especially a range hood.

Background

The range hood has become one of the indispensable kitchen household electrical appliances in modern families. The range hood works by utilizing the fluid dynamics principle, sucks and exhausts oil smoke through a centrifugal fan arranged in the range hood, and filters partial grease particles by using a filter screen. The centrifugal fan comprises a volute, an impeller arranged in the volute and a motor driving the impeller to rotate. When the impeller rotates, negative pressure suction is generated in the center of the fan, oil smoke below the range hood is sucked into the fan, and is accelerated by the fan, collected by the volute and guided to be discharged outdoors.

The size of a fume collecting hood of a common range hood is usually fixed, which means that the fume collecting range of the range hood is usually fixed and only covers the upper part of a kitchen range. In the cooking process of a modern kitchen, an electric rice cooker or an electric pressure cooker is generally used for auxiliary cooking, the electric rice cooker or the electric pressure cooker is generally placed on a cabinet table board beside a kitchen range, the range of a range hood is not arranged above the cabinet table board on the edge of the kitchen range, the electric rice cooker or the electric pressure cooker can generate a large amount of steam during cooking, and the steam is discharged in time, so that the wall or a hanging cabinet can be mildewed in the past, and the health of people is influenced.

In addition, after the common range hood is installed, the distance between the air inlet and the cooking bench surface is fixed and unchanged. In the cooking process of modern kitchens, the pots used by people are various and comprise frying pans, steaming pans and the like, the frying pans are generally low in height, the smoke generation amount during cooking is large, the air inlet of the range hood is required to be designed at a lower proper position to meet the smoke control and smoke reduction effects of oil smoke, the steaming pan is generally high in height, and the air inlet of the range hood is required to be designed at a higher proper position to avoid interference with the steaming pan.

In order to solve the problems, a range hood with an adjustable smoke gathering area is provided, for example, a movable range hood disclosed in chinese patent with application number 202021101042.1, which comprises a range hood body, the range hood body is provided with a movable smoke absorption hood in one-to-one correspondence with a smoke absorption port, the movable smoke absorption hood is moved left and right through the cooperation of a driving motor and a screw rod, the movable smoke absorption hood is moved up and down through the extension and retraction of a first electric telescopic rod, the movable smoke absorption hood is moved back and forth through the extension and retraction of a second electric telescopic rod, the movable smoke absorption hood is moved back and forth, the angle of the movable smoke absorption hood is adjusted through the cooperation of a rotating motor, a first conical tooth, a second conical tooth and a rotating shaft, different smoke exhaust requirements can be met, and accurate and quick smoke extraction is realized.

However, the above range hood realizes the telescopic function through the bellows, and the sectional area changes greatly in the process of extending or shortening the range hood, and the fluid is easy to generate vortex on the wall surface, which causes air volume loss; if the rotation is realized through the deformation of the corrugated pipe, if the rotation radius is the same, the deformation degree of the corrugated pipe is different, namely the on-way resistance is changed, so that the smoking effect is influenced; the fume collecting hood can not be vertically downward all the time when rotating, and the fume generated in the cooking process is vertically upward, so that the requirement of direct suction is difficult to meet.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to the not enough that above-mentioned prior art exists, provide a range hood, can satisfy the demand of air inlet direction and position when changing to hold together the cigarette region.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a range hood comprises an air inlet assembly and a fan frame for arranging a fan system, wherein the air inlet assembly comprises a first air inlet structure and a second air inlet structure which are independent and arranged at left and right intervals; the method is characterized in that:

the first air inlet structure comprises a first smoke collecting cover and a first pipeline, wherein two ends of the first pipeline are respectively in rotary connection with the fan frame and the first smoke collecting cover and are used for communicating the fan frame and the first smoke collecting cover with fluid;

the second air inlet structure comprises a second smoke collecting hood and a second pipeline, and two ends of the second pipeline are respectively in rotary connection with the fan frame and the second smoke collecting hood and are used for communicating the fan frame and the second smoke collecting hood through fluid;

the rotation axes of the first duct and the second duct extend in the front-rear direction.

Therefore, the first pipeline is respectively and rotationally connected with the first smoke collecting hood and the fan frame, and the second pipeline is respectively and rotationally connected with the second smoke collecting hood and the fan frame, so that the adjustable smoke collecting range can be realized, the sectional area change of fluid in the pipeline is small, the fluid flow is stable, and the air volume loss is small; in addition, can also realize the regulation of air inlet height, suitability and the smoking effect problem that brings when can satisfying the culinary art and using not co-altitude pan.

Furthermore, first pipeline and second pipeline are telescopic pipeline respectively, can ensure that along journey resistance is unchangeable from this, ensure the oil absorption cigarette effect, and it is regional to adjust to gather up the cigarette, can also satisfy suitability and the smoking effect problem that brings when the cooking uses not co-altitude pan simultaneously.

Preferably, for realizing that first pipeline and first collection petticoat pipe and fan frame rotate to be connected fluid intercommunication simultaneously, the lower tip of first pipeline passes through the rotation that constitutes hinge form between the top of first adaptor and first collection petticoat pipe to be connected, the upper end of first pipeline passes through the rotation that constitutes hinge form between second adaptor and the fan frame to be connected, first pipeline and first adaptor are in junction fluid intercommunication, fluid intercommunication in first adaptor and the first collection petticoat pipe, first pipeline and second adaptor are in junction fluid intercommunication, fluid intercommunication in second adaptor and fan frame.

Preferably, in order to further ensure that the sectional area change is small when the fluid flows in the pipeline, the fluid flow is stable, the air volume loss is small, each adapter is of a hollow structure and is divided into a front section and a rear section, and the end part of the first pipeline is positioned between the two sections of the corresponding adapter.

In order to facilitate connection and fluid communication of the second adapter and the fan frame, the fan frame comprises a bottom plate located at the bottom, the second adapter is arranged below the bottom plate, a first through hole is formed in the bottom plate, the top of the second adapter is open, and the first through hole corresponds to the opening of the second adapter.

Preferably, for realizing that second pipeline and second collection petticoat pipe and fan frame rotate to be connected fluid intercommunication simultaneously, the lower tip of second pipeline passes through the rotation that constitutes hinge form between the top of third adaptor and second collection petticoat pipe and is connected, and the upper end of second pipeline passes through the rotation that constitutes hinge form between fourth adaptor and the fan frame to be connected, second pipeline and third adaptor are in junction fluid intercommunication, fluid intercommunication in third adaptor and the second collection petticoat pipe, second pipeline and fourth adaptor are in junction fluid intercommunication, fluid intercommunication in fourth adaptor and fan frame.

Preferably, in order to further ensure that the sectional area change is small when the fluid flows in the pipeline, the fluid flow is stable, the air volume loss is small, each adapter is of a hollow structure and is divided into a front section and a rear section, and the end part of the second pipeline is positioned between the two sections of the corresponding adapter.

In order to facilitate connection and fluid communication between the fourth adapter and the air blower frame, the air blower frame comprises a bottom plate located at the bottom, the fourth adapter is arranged below the bottom plate, a second through hole is formed in the bottom plate, the top of the fourth adapter is open, and the second through hole corresponds to the opening of the fourth adapter.

Compared with the prior art, the utility model has the advantages of: the first pipeline is respectively and rotatably connected with the first smoke collecting hood and the fan frame, and the second pipeline is respectively and rotatably connected with the second smoke collecting hood and the fan frame, so that the smoke collecting range can be adjusted, and even the smoke collecting range can cover the upper part of a cooking bench outside a cooking range, so that a large amount of steam generated by an electric cooker/electric pressure cooker can be sucked away in time, and the sectional area change of fluid flowing in the pipeline is small, the fluid flows stably, and the air volume loss is small; the adjustment of air inlet height can also be realized, and the problems of adaptability and smoking effect brought when cookware with different heights is used in cooking are solved.

Drawings

Fig. 1 is a schematic view of a range hood according to an embodiment of the present invention;

fig. 2 is a schematic view illustrating contraction of a left air duct of the range hood according to the embodiment of the present invention;

fig. 3 is an exploded schematic view of the air intake assembly of the range hood according to the embodiment of the present invention;

fig. 4 is a schematic view illustrating that the right air duct of the range hood according to the embodiment of the present invention rotates outward;

fig. 5 is a schematic view of the rotation of the right air duct of the range hood according to the embodiment of the present invention (with the air inlet facing vertically downward);

fig. 6 is a schematic view of the range hood according to the embodiment of the present invention, showing the inward rotation of the right air duct.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, since the disclosed embodiments of the invention may be arranged in different orientations, these directional terms are for illustrative purposes only and should not be considered limiting, as "upper", "lower", and the like are not necessarily limited to directions opposite to or coincident with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Referring to fig. 1 to 3, a range hood includes an air intake assembly and a fan frame 2, and a fan system (not shown) is disposed in the fan frame 2. The wind stand 2 comprises a bottom plate 21 at the bottom. The left side of the bottom plate 21 is provided with a first through hole 211, and the right side of the bottom plate 21 is provided with a second through hole 212.

The air inlet subassembly includes first air inlet structure 11 and the second air inlet structure 12 of mutual independence of controlling the interval arrangement, and two air inlet structures are the same to preferred symmetrical arrangement, first air inlet structure 11 is located the left side of second air inlet structure 12. The first air intake structure 11 includes a first exhaust fume collecting hood 111 and a first duct 112, and on the first exhaust fume collecting hood 111, as preferable, a first air intake 113 is opened at the bottom of the first exhaust fume collecting hood 111, a lower end of the first duct 112 is rotatably connected with the top of the first exhaust fume collecting hood 111 through a first adapter 114, an upper end of the first duct 112 is rotatably connected with the bottom plate 21 of the fan frame 2 through a second adapter 115, and a rotation axis of the first duct 112 extends in the front-rear direction. The first duct 112 is rotatably connected to the first fume collecting hood 111 by a first adaptor 114, and the first duct 112 is rotatably connected to the base plate 21 by a second adaptor 115, both of which may be in the form of a hinge. The first duct 112 and the first adapter 114 are in fluid communication at a junction, the first adapter 114 and the first fume collecting hood 111 are in fluid communication, the first duct 112 and the second adapter 115 are in fluid communication at a junction, and the second adapter 115 is in fluid communication with the air frame 2 through a first through hole 211 (the second adapter 115 is open at the top, and the first through hole 211 corresponds to the open). Thus, the first adaptor 114, the first duct 112, the second adaptor 115 and the first through hole 211 fluidly communicate between the first air inlet 113 and the inside of the air frame 2. Preferably, the first adaptor 114 may be integral with the first smoke collecting hood 111, and the second adaptor 115 may be integral with the bottom plate 21. The first pipe 112 is a telescopic pipe.

Similarly, the second air intake structure 12 includes a second smoke collecting hood 121 and a second duct 122, where, as preferable, a second air inlet 123 is opened at the bottom of the second smoke collecting hood 121, the lower end of the second duct 122 is rotatably connected to the top of the second smoke collecting hood 121 through a third adaptor 124, the upper end of the second duct 122 is rotatably connected to the bottom plate 21 of the blower frame 2 through a fourth adaptor 125, and the rotation axis of the second duct 122 extends in the front-rear direction. The second duct 122 is rotatably connected to the second fume collecting hood 121 by a third adaptor 124, and the second duct 122 is rotatably connected to the base plate 21 by a fourth adaptor 125, both of which may be in the form of a hinge. The second duct 122 and the third adaptor 124 are in fluid communication at a junction, the third adaptor 124 and the second fume collecting hood 121 are in fluid communication, the second duct 122 and the fourth adaptor 125 are in fluid communication at a junction, and the fourth adaptor 125 is in fluid communication with the air frame 2 via a second through hole 212 (the fourth adaptor 125 is open at the top, and the second through hole 212 corresponds to the open mouth). Thus, the third adaptor 124, the second duct 122, the fourth adaptor 125 and the second through hole 22 fluidly communicate the second air inlet 123 with the inside of the air frame 2. Preferably, the third adaptor 124 may be integral with the second fume collecting hood 111, and the fourth adaptor 125 may be integral with the base plate 21. The second tube 122 is a telescoping tube.

The above-mentioned adapters are all hollow structures, and are all in the form of being divided into two sections, the first pipeline 112 and the second pipeline 122 are structures with basically unchanged cross-sectional area, and are located between the two corresponding adapters. The principle of hinge connection and fluid communication is known in the art, and can be referred to as the second connection part and the second connection assembly described in the range hood disclosed in chinese patent application No. 202123000169.1 of the present applicant, and the description thereof is omitted here.

The moving mechanism for driving the first pipe 112 relative to the first adaptor 114 and the second adaptor 115 and the moving mechanism for driving the second pipe 122 relative to the third adaptor 124 and the fourth adaptor 125 are not shown in the drawings, and both of these moving mechanisms are mechanisms capable of outputting torque, such as a motor directly driven or a motor driven by a transmission mechanism such as a gear. In addition, the first pipe 112 and the second pipe 122 can be extended or retracted by any suitable structure of the existing telescopic pipe, which is not described herein again.

The utility model discloses an among every air inlet structure, the adaptor swivelling joint of both sides and top around the upper end of pipeline, adaptor swivelling joint of both sides and below around the lower extreme, the sectional area change is less when the fluid flows in the pipeline, and fluid flow is stable, and the amount of wind loss is little. The front side and the rear side of the upper end of the pipeline are rotationally connected with the adapter above the pipeline, the smoke collecting hood takes the connection position as a rotation center, and due to the scalability of the pipeline, the change of the rotation radius of the smoke collecting hood can be realized by the extension and the shortening of the pipeline. In addition, both sides and the adaptor swivelling joint of below around the lower extreme of pipeline, collection petticoat pipe use this junction as the center of rotation, because the flue gas that the culinary art process produced is vertical ascending, collection petticoat pipe can realize being in vertical decurrent state all the time through the rotation to realize better smoking effect.

When an electric cooker/electric pressure cooker is arranged on the outer side of the cooker for cooking, one or two air inlet structures can rotate, at the moment, the corresponding smoke collecting hood turns outwards, namely the negative pressure area turns outwards, as shown in fig. 4, and the second smoke collecting hood 121 on the right side turns outwards. When the electrical appliance on the outer side of the stove is higher, the electrical appliance can be turned to the position shown in fig. 5, at this time, the electrical appliance is turned to the highest position, and the second air inlet 123 faces downwards so as to meet the requirement of electrical appliances with certain heights. In the highest position shown in fig. 5, the second fume collecting hood 121 can be made to translate left and right, that is, the negative pressure region can be translated left and right, by adjusting the telescopic length of the second duct 122.

When cooking is fried to the cooking of cooking utensils left side explode, can produce a large amount of oil smoke, for promoting the smoking effect when unilateral cooking, can overturn second collection petticoat pipe 121 on right side to left first collection petticoat pipe 111 side below, refer to fig. 6, and the top side double suction is realized to left oil smoke this moment, promotes the smoking effect when unilateral is fried to the explosion.

When two furnace ends of a cooker cook simultaneously, and the height of the cooker is different, two left/right pipelines can be turned to the vertical direction, two left/right fume collecting hoods are turned to the horizontal position, corresponding air inlets are downward, and the telescopic distance of the two air channels is adjusted, so that the height of the corresponding fume collecting hoods is adjusted, and further the negative pressure regions required by the cookers with different heights are realized.

The height and the turnover angle of the smoke collecting hood required by other different cooking states can be reached after similar movement is carried out according to requirements.

The term "fluid communication" as used herein refers to a spatial relationship between two components or portions (hereinafter, referred to as a first portion and a second portion) in a unified manner, i.e., a fluid (gas, liquid or a mixture thereof) can flow along a flow path from the first portion or/and be transported to the second portion, and may be directly communicated between the first portion and the second portion, or indirectly communicated between the first portion and the second portion via at least one third member, which may be a fluid passage such as a pipe, a channel, a duct, a flow guide member, a hole, a groove, or a chamber allowing the fluid to flow therethrough, or a combination thereof.

Claims (8)

1. A range hood comprises an air inlet component and a fan frame (2) for arranging a fan system, wherein the air inlet component comprises a first air inlet structure (11) and a second air inlet structure (12) which are arranged at intervals on the left and the right and are independent; the method is characterized in that:

the first air inlet structure (11) comprises a first smoke collecting cover (111) and a first pipeline (112), and two ends of the first pipeline (112) are respectively and rotatably connected with the fan frame (2) and the first smoke collecting cover (111) and are used for communicating the fluid between the fan frame (2) and the first smoke collecting cover (111);

the second air inlet structure (12) comprises a second fume collecting hood (121) and a second pipeline (122), and two ends of the second pipeline (122) are respectively and rotatably connected with the fan frame (2) and the second fume collecting hood (121) and are used for communicating the fluid between the fan frame (2) and the second fume collecting hood (121);

the rotational axes of the first duct (112) and the second duct (122) extend in the front-rear direction.

2. The range hood of claim 1, wherein: the first pipe (112) and the second pipe (122) are telescopic pipes respectively.

3. The range hood according to claim 1 or 2, wherein: the lower tip of first pipeline (112) passes through first adaptor (114) and constitutes hinge form's rotation between the top of first collection petticoat pipe (111) and is connected, the upper end of first pipeline (112) passes through second adaptor (115) and constitutes hinge form's rotation between fan frame (2) and be connected, first pipeline (112) and first adaptor (114) are at the junction fluid intercommunication, first adaptor (114) and first collection petticoat pipe (111) fluid intercommunication, first pipeline (112) and second adaptor (115) are at the junction fluid intercommunication, second adaptor (115) and fan frame (2) fluid intercommunication.

4. The range hood of claim 3, wherein: each adapter is of a hollow structure and is divided into a front section and a rear section, and the end part of the first pipeline (112) is positioned between the two sections of the corresponding adapter.

5. The range hood of claim 4, wherein: the wind frame (2) is including bottom plate (21) that is located the bottom, second adaptor (115) set up under bottom plate (21), first through-hole (211) have been seted up on bottom plate (21), second adaptor (115) top is uncovered, first through-hole (211) correspond the uncovered department of second adaptor (115).

6. The range hood of claim 1 or 2, wherein: the lower end of the second pipeline (122) is connected with the top of the second smoke collecting hood (121) in a hinge mode in a rotating mode through a third adapter (124), the upper end of the second pipeline (122) is connected with the fan frame (2) in a hinge mode in a rotating mode through a fourth adapter (125), the second pipeline (122) is communicated with the third adapter (124) in a fluid mode at the joint, the third adapter (124) is communicated with the second smoke collecting hood (121) in a fluid mode, the second pipeline (122) is communicated with the fourth adapter (125) in a fluid mode at the joint, and the fourth adapter (125) is communicated with the fan frame (2) in a fluid mode.

7. The range hood of claim 6, wherein: each adapter is of a hollow structure and is divided into a front section and a rear section, and the end part of the second pipeline (122) is positioned between the two sections of the corresponding adapter.

8. The range hood of claim 7, wherein: the fan frame (2) is including bottom plate (21) that is located the bottom, fourth adaptor (125) set up under bottom plate (21), second through-hole (212) have been seted up on bottom plate (21), fourth adaptor (125) top is uncovered, second through-hole (212) correspond the uncovered department of fourth adaptor (125).

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