Range hood and mesh cover and processing method thereof

Abstract

The present invention provides a range hood and a mesh cover and a processing method thereof, which relates to the technical field of household appliances, and includes preparing a mesh cover ring: taking a strip plate, processing a plurality of first mesh holes between the two ends of the strip plate in the length direction, and processing a plurality of opening grooves on the two end faces of the strip plate along the width direction of the strip plate, so that the strip plate forms a mesh plate; bending the mesh plate in a circular shape, so that the opening grooves on the two end faces of the mesh plate in the length direction correspond to each other and form a second mesh hole, and then fixing the two ends of the mesh plate in the length direction to form a mesh cover ring; preparing a mesh cover cover; assembling the mesh cover ring and the mesh cover cover: installing the mesh cover cover on the opening at one end of the mesh cover ring to form a mesh cover. When the mesh plate is bent in a circular shape, so that the opening grooves on the two end faces of the mesh plate in the length direction are connected to form the second mesh hole, the material utilization rate is high, and the mesh cover ring has mesh holes in the circumference, which increases the air intake area, improves the uniformity of the air intake, and improves the smoking effect.

Description

Technical Field

[0001] The invention relates to the technical field of household appliances, and in particular to a range hood and a mesh cover and a processing method thereof. Background Art

[0002] The mesh cover of the range hood is usually set at the smoke inlet of the smoke hood to filter the oil smoke passing through the smoke inlet. The current mesh cover includes a mesh cover ring and a mesh cover cover, wherein the mesh cover cover is connected to one end of the mesh cover ring, and the oil smoke is filtered by the mesh holes set on the mesh cover ring. The existing mesh cover ring is usually formed by bending the punched plate into a ring shape and then welding or riveting the connecting parts at both ends together, and the position for welding or riveting usually leaves an edge without mesh holes. Therefore, mesh holes cannot be set at the welding or riveting position, resulting in a reduced air intake area, uneven air intake, and affecting the overall smoking effect. Summary of the invention

[0003] The object of the present invention is to provide a range hood and a mesh cover and a processing method thereof, so as to alleviate the technical problem that the mesh cover ring of the existing mesh cover is usually formed by bending a punched plate into a ring shape and then welding or riveting the connecting parts at both ends together, and an edge without mesh holes is usually left at the position used for welding or riveting. Therefore, it is necessary to have mesh holes at the welding or riveting position, which leads to a reduction in the air intake area, uneven air intake, and affects the overall smoking effect.

[0004] The present invention provides a method for processing a mesh cover, the method comprising:

[0005] Prepare a mesh ring: take a strip plate, process a plurality of first mesh holes between the two ends of the strip plate in the length direction, and process a plurality of opening grooves on the end surfaces of the two ends of the strip plate along the width direction of the strip plate, so that the strip plate forms a mesh plate; bend the mesh plate in a ring shape, so that the opening grooves on the end surfaces of the two ends of the mesh plate in the length direction correspond to each other and butt to form a second mesh hole, and then fix the two ends of the mesh plate in the length direction to form a mesh ring;

[0006] preparing a mesh cover;

[0007] Assemble the mesh ring and the mesh cover: install the mesh cover on the opening at one end of the mesh ring to form a mesh.

[0008] Furthermore, the step of forming the strip plate into a mesh plate also includes: processing a plurality of grooves on one of the end faces at both ends in the length direction of the strip plate along the width direction of the strip plate, and processing a plurality of protrusions on the other end face along the width direction of the strip plate corresponding to the grooves one by one, wherein the opening groove of the end face corresponding to the end of the groove is located between two adjacent grooves, and the opening groove of the end face corresponding to the end of the protrusion is located between two adjacent protrusions.

[0009] Furthermore, the step of machining a plurality of opening grooves on the end surfaces at both ends of the strip plate along the width direction of the strip plate includes: machining a plurality of first opening grooves on one of the end surfaces at both ends of the strip plate along the width direction, machining a plurality of second opening grooves on one of the end surfaces at both ends of the strip plate along the width direction, one-to-one corresponding to the first opening grooves, and axially symmetrically machining a plurality of second opening grooves with respect to the first opening grooves;

[0010] The step of fixing the two ends of the mesh plate in the length direction includes: correspondingly plugging and fixing the groove and the protrusion.

[0011] Furthermore, the step of forming the strip plate into a mesh plate further includes: processing a first concave-convex matching portion on one side edge of one end of the strip plate in the width direction;

[0012] The step of preparing the mesh cover comprises: processing a second concave-convex matching portion matching with the first concave-convex matching portion on the mesh cover along the circumference of the mesh cover;

[0013] The step of assembling the mesh ring and the mesh cover includes: inserting and fitting the second concave-convex matching part on the mesh cover with the first concave-convex matching part on the mesh ring to form the mesh.

[0014] Furthermore, after the step of assembling the mesh ring and the mesh cover, the step of forming a protective coating on the mesh using an electrophoretic spraying process is also included.

[0015] Furthermore, the first mesh, the first opening slot, the second opening slot, the protrusion and the groove are all processed on the strip plate by an electro-corrosion process or a stamping process;

[0016] and / or;

[0017] The groove is processed into a dovetail shape, and the protrusion is processed into a dovetail shape.

[0018] Further, one of the first concave-convex matching portion and the second concave-convex matching portion is processed into a dovetail groove, and the other is processed into a dovetail convex portion;

[0019] and / or;

[0020] The first concave-convex matching portion and the second concave-convex matching portion are both processed on the strip plate by an electro-corrosion process or a stamping process.

[0021] The mesh cover provided by the present invention comprises a mesh cover and a mesh cover ring, wherein the mesh cover is connected to an opening at one end of the mesh cover ring, and the mesh cover ring is composed of a mesh plate with a first mesh hole which is bent in a ring shape and fixed at both ends, and a plurality of open grooves are respectively arranged on the end surfaces at both ends of the mesh plate along the width direction of the mesh plate, and after the mesh plate is bent and fixed, the open grooves on the end surfaces at both ends of the mesh plate in the length direction correspond to each other and are butt-jointed to form a second mesh hole.

[0022] Furthermore, the plurality of grooves and the plurality of protrusions are respectively arranged at intervals along the width direction of the mesh plate.

[0023] Furthermore, the open groove of the end surface corresponding to the end of the groove is located between two adjacent grooves, and the open groove of the end surface corresponding to the end of the protrusion is located between two adjacent protrusions.

[0024] Furthermore, the size of the first mesh is the same as the size of the second mesh.

[0025] Furthermore, one of the two ends in the length direction of the mesh plate has a plurality of grooves along the width direction of the mesh plate, and the other end surface has a plurality of protrusions corresponding to the grooves along the width direction of the mesh plate, and the grooves and the protrusions are correspondingly plugged and fixed.

[0026] Furthermore, a first concave-convex fitting portion is provided on the inner circumference of the mesh ring, and a second concave-convex fitting portion corresponding to the first concave-convex fitting portion is provided on the circumference of the mesh cover. The second concave-convex fitting portion on the mesh cover and the first concave-convex fitting portion on the mesh ring are plug-fitted and fixed.

[0027] Furthermore, the first concave-convex matching portion is a dovetail-shaped structure, and the second concave-convex matching portion is a dovetail groove matching with the dovetail-shaped structure;

[0028] And / or, the second concave-convex matching portion is a dovetail-shaped structure, and the first concave-convex matching portion is a dovetail groove matching with the dovetail-shaped structure.

[0029] The range hood provided by the present invention comprises the mesh cover.

[0030] Furthermore, the range hood also includes a smoke hood and a rectifying net assembly, the smoke hood is provided with an opening at the lower end, a baffle is provided in the middle of the opening, the baffle separates the opening into two smoke inlets, and the rectifying net assembly is arranged above the baffle.

[0031] Furthermore, the rectifying mesh assembly includes a rectifying mesh body, on which a plurality of mesh portions connected in sequence are provided, wherein the outer side wall of the mesh portion close to the center of the rectifying mesh body is connected to the inner side wall of the other mesh portion among two adjacent mesh portions, and the two adjacent mesh portions are staggered.

[0032] Furthermore, the range hood further comprises a smoke collecting hood and a connecting plate assembly, the smoke collecting hood is provided with a smoke inlet, the mesh cover is installed at the smoke inlet, the connecting plate assembly is installed at the upper end of the smoke collecting hood, and a smoke inlet channel is formed between the connecting plate assembly and the mesh cover;

[0033] The connecting plate assembly includes a connecting plate body, which is provided with an opening. Along the flow direction of the airflow, a buffer module is provided on the connecting plate body near the opening, and the buffer module protrudes from the plane where the connecting plate body is located to the air inlet side of the opening.

[0034] Furthermore, along the transverse direction of the connecting plate body, airflow division modules with the same protruding direction as the buffer module are respectively arranged on both sides of the opening, and the airflow division module includes a plurality of division parts arranged at intervals along the longitudinal direction of the connecting plate body, and the division parts extend along the transverse direction of the connecting plate body.

[0035] The invention provides a method for processing a mesh cover, the method comprising: preparing a mesh cover ring: taking a strip plate, processing a plurality of first mesh holes between the two ends of the strip plate in the length direction, and processing a plurality of open grooves on the end surfaces of the two ends of the strip plate along the width direction of the strip plate respectively, so that the strip plate forms a mesh plate; bending the mesh plate in a ring shape, so that the open grooves on the end surfaces of the two ends of the mesh plate in the length direction are connected one by one to form second mesh holes, and then fixing the two ends of the mesh plate in the length direction to form a mesh cover ring; preparing a mesh cover; assembling the mesh cover ring and the mesh cover: installing the mesh cover on the opening at one end of the mesh cover ring to form a mesh cover.

[0036] In the present invention, by processing the first mesh hole on the strip plate and processing a plurality of open grooves on the end faces of both ends of the strip plate, when the mesh plate is bent in a ring shape, the open grooves on the end faces of both ends of the mesh plate in the length direction are connected one by one to form a second mesh hole, and the material utilization rate can be optimized, so that the mesh cover circle formed is fully provided with mesh holes in the circumference, and there is no mesh-free area. Therefore, the air intake area can be increased, the uniformity of the air intake can be improved, and the overall smoking effect can be improved.

[0037] The mesh cover provided by the present invention comprises a mesh cover and a mesh cover ring, wherein the mesh cover is connected to an opening at one end of the mesh cover ring, and the mesh cover ring is formed by a mesh plate with a first mesh hole being bent in a ring shape and fixed at both ends, and a plurality of opening grooves are respectively arranged on the end surfaces of both ends of the mesh plate along the width direction of the mesh plate, and after the mesh plate is bent and fixed, the opening grooves on the end surfaces of both ends of the mesh plate in the length direction correspond to each other and are connected to form a second mesh hole. The mesh holes are arranged in the circumference of the annular structure surrounded by the mesh cover ring, and compared with the prior art, the air intake area is increased and the smoking effect is improved.

[0038] The range hood provided by the present invention includes the above-mentioned mesh cover, so the range hood also has the advantages of the mesh cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 A structural diagram of a mesh cover formed by a mesh cover processing method provided by an embodiment of the present invention;

[0041] Figure 2 A side view of a mesh cover formed by a method for processing a mesh cover provided by an embodiment of the present invention;

[0042] Figure 3 for Figure 2 A magnified view of part a in FIG.

[0043] Figure 4 A disassembly diagram of a mesh cover provided in an embodiment of the present invention;

[0044] Figure 5 A schematic flow chart of a method for processing a mesh cover provided by an embodiment of the present invention;

[0045] Figure 6 A schematic diagram of forming a mesh cover according to a method for processing a mesh cover provided by an embodiment of the present invention;

[0046] Figure 7 A schematic diagram of forming a mesh cover ring in a mesh cover processing method provided by an embodiment of the present invention;

[0047] Figure 8 for Figure 7 The enlarged view of part b in FIG.

[0048] Fig. 9 for Figure 7 The enlarged view of part c in FIG.

[0049] Fig.10 for Figure 7 The d-direction diagram in FIG.

[0050] Fig.11 It is a schematic diagram of welding of a mesh cover ring of a mesh cover in the prior art;

[0051] Fig.12 A schematic diagram of splicing a mesh cover ring in a mesh cover processing method provided by an embodiment of the present invention;

[0052] Fig.13 Another schematic diagram of splicing a mesh cover ring in a mesh cover processing method provided by an embodiment of the present invention;

[0053] Fig.14 A schematic diagram of the structure of a range hood provided by an embodiment of the present invention;

[0054] Fig.15 A schematic diagram of smoke intake of a range hood provided by an embodiment of the present invention;

[0055] Fig.16 A structural diagram of a rectifier network assembly of a range hood provided by an embodiment of the present invention;

[0056] Fig.17 A schematic diagram of a partial smoke intake of a range hood provided by an embodiment of the present invention;

[0057] Fig.18 for Fig.17 The enlarged view of part e in FIG.

[0058] Fig.19 A structural diagram of a connecting plate assembly of a range hood provided in an embodiment of the present invention.

[0059] Icons: 1-mesh cover; 2-smoke hood; 3-smoke inlet; 4-rectifier mesh assembly; 41-rectifier mesh body; 42-mesh part; 5-connecting plate assembly; 51-buffer module; 52-dividing part; 50-opening; 6-baffle; 10-mesh cover; 110-second concave-convex matching part; 20-mesh cover ring; 210-first concave-convex matching part; 220-second mesh hole; 221-first opening slot; 222-second opening slot; 231-protrusion; 232-groove; 240-flange part. DETAILED DESCRIPTION

[0060] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0061] like Figures 1 to 13 As shown, the processing method of the mesh cover 1 provided in this embodiment includes:

[0062] Preparation of mesh ring 20: Take a strip plate, process a plurality of first mesh holes between the two ends of the strip plate in the length direction, and process a plurality of opening grooves on the two end surfaces of the strip plate along the width direction of the strip plate, so that the strip plate forms a mesh plate; bend the mesh plate into a ring shape, so that the opening grooves on the two end surfaces of the mesh plate in the length direction correspond to each other and are connected to form a second mesh hole 220, and then fix the two ends of the mesh plate in the length direction to form a mesh ring 20;

[0063] Prepare a mesh cover 10;

[0064] Assemble the mesh ring 20 and the mesh cover 10: install the mesh cover 10 on the opening at one end of the mesh ring 20 to form the mesh 1.

[0065] In the present invention, by processing the first mesh hole on the strip plate and processing a plurality of open grooves on the end faces of both ends of the strip plate, when the mesh plate is bent in a ring shape, the open grooves on the end faces of both ends of the mesh plate in the length direction are connected one by one to form the second mesh hole 220, the material utilization rate can be optimized, so that the mesh cover ring 20 is formed with mesh holes all around in the circumference, and there is no area without mesh holes. Therefore, the air intake area can be increased, the uniformity of the air intake can be improved, and the overall smoking effect can be improved.

[0066] Furthermore, the step of forming the strip plate into a mesh plate also includes: processing a plurality of grooves 232 on one of the end faces at both ends in the length direction of the strip plate along the width direction of the strip plate, and processing a plurality of protrusions 231 on the other end face along the width direction of the strip plate, one by one corresponding to the grooves 232, wherein the opening groove of the end face corresponding to the end of the groove 232 is located between two adjacent grooves 232, and the opening groove of the end face corresponding to the end of the protrusion 231 is located between two adjacent protrusions 231.

[0067] Specifically, in this embodiment, the protrusions and grooves 232 may be processed on the end surface of the strip plate first, or the open groove may be processed first, and the final processing result is that the open groove is located between two grooves 232 or protrusions 231 respectively.

[0068] It should be noted that the groove 232 may be a dovetail groove, and the protrusion 231 may be a dovetail-shaped structure corresponding to the dovetail groove, and the two are connected by interference fit.

[0069] Furthermore, the step of machining a plurality of opening grooves on the end surfaces of the strip plate along the width direction of the strip plate includes: machining a plurality of first opening grooves 221 on one of the end surfaces of the strip plate along the width direction, machining a plurality of second opening grooves 222 on one of the end surfaces of the strip plate along the width direction, one-to-one corresponding to the first opening grooves 221, and axially symmetrically with the first opening grooves 221;

[0070] The step of fixing the two ends of the mesh plate in the length direction includes: plugging and fixing the groove 232 and the protrusion 231 correspondingly.

[0071] Specifically, the first opening slot 221 and the second opening slot 222 are half mesh structures respectively, and when the first opening slot 221 and the second opening slot 222 are connected to form a second mesh 220, the first opening slot 221 and the second opening slot 222 are symmetrical about the connection line.

[0072] Furthermore, the step of forming the strip plate into a mesh plate further includes: processing a first concave-convex matching portion 210 on one side of the strip plate extending along the length direction;

[0073] The step of preparing the mesh cover 10 includes: processing the second concave-convex matching portion 110 matching with the first concave-convex matching portion 210 on the mesh cover 10 along the circumference of the mesh cover 10;

[0074] The steps of assembling the mesh ring 20 and the mesh cover 10 include: plugging and fitting the second concave-convex matching portion 110 on the mesh cover 10 and the first concave-convex matching portion 210 on the mesh ring 20 to form the mesh 1.

[0075] Preferably, in this embodiment, the first concave-convex matching portion 210 and the second concave-convex matching portion 110 are interference fit, and the first concave-convex matching portion 210 is a dovetail structure, and the second concave-convex matching portion 110 is a dovetail groove that matches the dovetail structure;

[0076] It should be noted that, as another structural form, the second concave-convex matching portion 110 may also be a dovetail structure, and the first concave-convex matching portion 210 is a dovetail groove that matches the dovetail structure.

[0077] Furthermore, after the step of assembling the mesh ring 20 and the mesh cover 10, a step of forming a protective coating on the mesh 1 by using an electrophoretic spraying process is also included. Specifically, the step of assembling the mesh ring 20 and the mesh cover 10 also includes: after the mesh cover 10 is installed on the opening at one end of the mesh ring 20 to form the mesh 1, an electrophoretic coating is formed on the mesh cover 10 and the mesh ring 20 by using an electrophoretic spraying process.

[0078] Furthermore, the first mesh, the first opening slot 221, the second opening slot 222, the protrusion 231 and the groove 232 are all processed on the strip plate by an electro-corrosion process or a stamping process;

[0079] It should be noted that the groove 232 is processed into a dovetail shape, and the protrusion 231 is processed into a dovetail shape.

[0080] Furthermore, one of the first concave-convex matching portion 210 and the second concave-convex matching portion 110 is processed into a dovetail groove, and the other is processed into a dovetail convex portion; the first concave-convex matching portion 210 and the second concave-convex matching portion 110 are both processed on the strip plate by an electro-corrosion process or a stamping process.

[0081] like Figure 5 As shown, in this embodiment, the processing method of the mesh cover 1 includes:

[0082] 1. Prepare the mesh ring 20, the raw material of the mesh ring 20 → cut to form a strip plate → process the first mesh hole, the first opening groove 221, the second opening groove 222, the groove 232, the protrusion 231; the first concave-convex matching part 210 and the flange part 240 → bend the first concave-convex matching part 210 and the flange part 240 → splice to form an annular structure; 2. Prepare the mesh cover 10, the raw material of the mesh cover 10 → process the second concave-convex matching part 110; 3. Assemble the mesh ring 20 and the mesh cover 10, connect the mesh cover 10 and the mesh ring 20 → electrophoresis spray to form an electrophoretic coating.

[0083] Specifically, the processing technology of the mesh cover 10 includes: first, cutting the plate to form the raw material of the mesh cover 10; then, processing according to the mesh cover 10 drawing (in this embodiment, the mesh cover 10 is generally a rectangular structure), and using an electro-corrosion process to form a plurality of spaced-apart second concave-convex fitting parts 110 (dovetail grooves) on the circumference of the mesh cover 10.

[0084] The processing technology of the mesh ring 20 includes: first, cutting the plate to form the material of the mesh ring 20, that is, the strip material; then, processing is performed according to the mesh ring 20 drawing, and a mesh is formed on the strip plate by using an electro-corrosion process, a protrusion 231 (a dovetail structure) is formed at the left end of the plate, and a first open groove 221 (half of the second mesh 220) is formed between two adjacent protrusions 231, a groove 232 (a dovetail groove) corresponding to the protrusion 231 is formed at the right end of the strip plate, and a second open groove 222 (half of the second mesh 220) is formed between two adjacent grooves 232, a plurality of first concave-convex matching parts 210 (a dovetail structure) corresponding to the second concave-convex matching parts 110 are formed at intervals on the upper side of the strip plate, and a flange part 240 is formed on the lower side of the strip plate. It should be noted that the number of the first opening groove 221 , the second opening groove 222 , the groove 232 , the protrusion 231 , the first concave-convex matching portion 210 and the second concave-convex matching portion 110 is not limited.

[0085] Secondly, according to the mesh ring 20 drawing, the flange 240 and the first concave-convex matching portion 210 are processed, so that the flange 240 and the first concave-convex matching portion 210 are perpendicular to the plane where the mesh plate is located, and the flange 240 and the first concave-convex matching portion 210 are respectively located on two opposite sides of the mesh plate;

[0086] Once again, the mesh plate is processed according to the mesh cover ring 20 drawing, and the mesh plate is bent and spliced ​​to form an annular structure, wherein the protrusion 231 is plug-connected with the groove 232, and the first opening groove 221 is aligned with the second opening groove 222 to form a second mesh 220. In this embodiment, the size of the second mesh 220 is the same as that of the first mesh. It should be noted that the protrusion 231 and the groove 232 are interference fit, so that they can be easily matched. After matching, they are compacted by the mold so that the dovetail structure and the dovetail groove are firmly matched. The second mesh 220 of the two parts is connected to form an integral second mesh 220, and the half hole and the half hole can be tightly combined by connecting the protrusion 231 and the groove 232.

[0087] Finally, the mesh cover 1 is processed according to the mesh cover drawing, and the mesh cover cover 10 and the mesh cover ring 20 are matched with the first concave-convex matching part 210 and the second concave-convex matching part 110 to splice the dovetail structure and the dovetail groove.

[0088] The advantages of the connection between the dovetail structure and the dovetail groove are as follows: no riveting process is required, the material utilization rate can be optimized, there is no riveted edge, and the mesh cover 1 has a better overall assembly. In addition, no spot welding or welding process is required, which saves some processes and improves production efficiency. After splicing, the half holes are butt-jointed to form a structure with mesh holes throughout the mesh, so that the mesh cover 1 can be used symmetrically.

[0089] The mesh cover 1 provided in this embodiment includes a mesh cover 10 and a mesh cover ring 20. The mesh cover 10 is connected to an opening at one end of the mesh cover ring 20. The mesh cover ring 20 is composed of a mesh plate with a first mesh hole that is bent in a ring shape and fixed at both ends. A plurality of open grooves are respectively provided on both end surfaces of the mesh plate along the width direction of the mesh plate. After the mesh plate is bent and fixed, the open grooves on the both end surfaces of the mesh plate in the length direction correspond to each other and are connected to form a second mesh hole 220.

[0090] Specifically, the mesh cover 1 provided in this embodiment can be made by the above-mentioned mesh cover 1 processing method. It should be noted that other molding methods can also be used to form the mesh cover 1. Thus, the annular structure formed by the mesh cover ring 20 has mesh holes in the circumference, which increases the air intake area and improves the smoking effect compared with the prior art.

[0091] Preferably, the size of the first mesh is the same as the size of the second mesh 220 .

[0092] Furthermore, one of the two ends of the mesh plate in the length direction has a plurality of grooves 232 along the width direction of the mesh plate, and the other end face has a plurality of protrusions 231 corresponding to the grooves 232 along the width direction of the mesh plate, and the grooves 232 and the protrusions 231 are correspondingly plugged and fixed.

[0093] Preferably, the groove 232 may be a dovetail groove, and the protrusion 231 may be a dovetail-shaped structure corresponding to the dovetail groove, and the two are connected by interference fit. The advantages of the splicing structure installed in the dovetail groove by the dovetail-shaped structure include: no riveting process is required, the material utilization rate can be optimized, there is no riveted edge, and the integrity of the mesh ring 20 is better. In addition, no spot welding or welding process is required, which saves some processes and improves production efficiency.

[0094] Furthermore, the plurality of grooves 232 and the plurality of protrusions 231 are respectively arranged at intervals along the width direction of the mesh plate, wherein the grooves 232 correspond to the protrusions 231 one by one, thereby realizing the plug-in of the mesh plate.

[0095] Furthermore, the opening groove of the end surface corresponding to the end of the groove 232 is located between two adjacent grooves 232 , and the opening groove of the end surface corresponding to the end of the protrusion 231 is located between two adjacent protrusions 231 .

[0096] Furthermore, a first concave-convex fitting portion 210 is provided on the inner circumference of the mesh ring 20, and a second concave-convex fitting portion 110 corresponding to the first concave-convex fitting portion 210 is provided on the circumference of the mesh cover 10. The second concave-convex fitting portion 110 on the mesh cover 10 and the first concave-convex fitting portion 210 on the mesh ring 20 are plug-fitted and fixed.

[0097] Further, the first concave-convex matching portion 210 is a dovetail-shaped structure, and the second concave-convex matching portion 110 is a dovetail groove matching with the dovetail-shaped structure; and / or, the second concave-convex matching portion 110 is a dovetail-shaped structure, and the first concave-convex matching portion 210 is a dovetail groove matching with the dovetail-shaped structure.

[0098] Specifically, in this embodiment, the first concave-convex matching portion 210 and the second concave-convex matching portion 110 are interference fit, and the first concave-convex matching portion 210 is a dovetail structure, and the second concave-convex matching portion 110 is a dovetail groove that matches the dovetail structure;

[0099] It should be noted that, as another structural form, the second concave-convex matching portion 110 may also be a dovetail structure, and the first concave-convex matching portion 210 is a dovetail groove that matches the dovetail structure.

[0100] It should be noted that a flange portion 240 is circumferentially provided at one end of the mesh ring 20 away from the mesh cover 10 , and the flange portion 240 is used for circumferential connection with the smoke inlet 3 of the smoke collecting hood 2 of the range hood.

[0101] like Figures 14 to 19 As shown, the range hood provided in this embodiment includes the above-mentioned mesh cover 1, so the range hood also has all the advantages of the above-mentioned mesh cover 1.

[0102] Furthermore, the range hood further comprises a smoke collecting hood 2 and a rectifying net assembly 4. The lower end of the smoke collecting hood 2 is provided with an opening, a baffle 6 is provided in the middle of the opening, the baffle 6 divides the opening into two smoke inlets 3, and the rectifying net assembly 4 is arranged above the baffle 6. In actual use, the rectifying net assembly 4 can reduce the noise caused by the turbulence caused by the streamlines of the range hood due to multiple airflows, and improve the smoking effect.

[0103] Furthermore, the rectifying mesh assembly 4 includes a rectifying mesh body 41, on which a plurality of mesh portions 42 connected in sequence are provided, wherein the outer wall of the mesh portion 42 close to the center of the rectifying mesh body 41 is connected to the inner wall of the other mesh portion 42 among two adjacent mesh portions 42, and the two adjacent mesh portions 42 are staggered.

[0104] In actual use, the above-mentioned rectifying mesh structure is installed at the intersection of multiple airflows in different directions in the range hood, and is used to sort out multiple (two or more) airflows and straighten the airflows, thereby avoiding airflow collisions, generating vortices and turbulence, further improving the smoking effect, and reducing the noise of the range hood. At the same time, the rectifying mesh structure includes a rectifying mesh body 41, and the rectifying mesh body 41 is provided with a plurality of mesh portions 42 connected in sequence, and two adjacent mesh portions 42 are staggered, that is, the mesh portion 42 close to the center of the rectifying mesh body 41 protrudes laterally relative to the other mesh portion 42, which can improve the strength of the rectifying mesh structure and improve the service life of the rectifying mesh structure.

[0105] Furthermore, the range hood further comprises a smoke collecting hood 2 and a connecting plate assembly 5, the smoke collecting hood 2 is provided with a smoke inlet 3, the mesh cover 1 is mounted at the smoke inlet 3, the connecting plate assembly 5 is mounted at the upper end of the smoke collecting hood 2, and a smoke inlet channel is formed between the connecting plate assembly 5 and the mesh cover 1;

[0106] The connecting plate assembly 5 includes a connecting plate body, on which an opening 50 is provided. Along the flow direction of the airflow, a buffer module 51 is provided near the opening 50 of the connecting plate body, and the buffer module 51 protrudes from the plane where the connecting plate body is located to the air inlet side of the opening 50. In actual use, the connecting plate structure is installed at the upper end of the range hood 2, and the buffer module 51 arranged at the opening 50 of the connecting plate body can buffer the flow speed of the airflow and adjust the direction of the airflow, that is, the airflow first flows to the side and downward direction and then flows to the side and upward direction, thereby avoiding the collision between the airflow on the side of the range hood and the airflow in the middle, generating turbulence, thereby improving the smoke extraction effect of the range hood and reducing the noise generated by the turbulent airflow.

[0107] Furthermore, along the lateral direction of the connecting plate body, airflow division modules with the same protruding direction as the buffer module 51 are respectively arranged on both sides of the opening 50, and the airflow division module includes a plurality of division parts 52 arranged at intervals along the longitudinal direction of the connecting plate body, and the division parts 52 extend along the lateral direction of the connecting plate body.

[0108] Furthermore, the number of the dividing parts 52 is at least two. Preferably, in this embodiment, the number of the dividing parts 52 is three, that is, three dividing parts 52 are arranged at intervals on both sides of the opening 50 of the connecting plate body.

[0109] Preferably, the cross section of the dividing portion 52 is an arc-shaped structure or a trapezoidal structure.

[0110] Specifically, in this embodiment, each side of the opening 50 is provided with three spaced-apart dividing structures, thereby dividing the airflow into four streams (such as Fig.19 In the process of oil smoke flowing from the outside to the opening 50 of the connecting plate body, vortices are avoided between the airflows to cause streamline interference and turbulence, thereby improving the smoking effect and noise. This structure mimics the function of a mountain range (that is, the airflow can only flow between two mountains), which can affect the direction of the airflow and guide the airflow into the fan structure. The height of the airflow division module is generally set to about one tenth of the height of the smoke inlet channel. The cross-sectional shape of the airflow division module can be a trapezoid or an arc.

[0111] In summary, the processing method of the mesh cover 1 provided by the present invention includes: preparing the mesh cover ring 20: taking a strip plate, processing a plurality of first mesh holes between the two ends of the strip plate in the length direction, and processing a plurality of open grooves on the end surfaces of the two ends of the strip plate along the width direction of the strip plate, so that the strip plate forms a mesh plate; bending the mesh plate into a ring shape, so that the open grooves on the end surfaces of the two ends of the mesh plate in the length direction correspond to each other to form a second mesh hole 220, and then fixing the two ends of the mesh plate in the length direction to form a mesh cover ring 20; preparing the mesh cover 10; assembling the mesh cover ring 20 and the mesh cover 10: installing the mesh cover 10 on the opening at one end of the mesh cover ring 20 to form a mesh cover 1. By processing the first mesh on the strip plate and processing a plurality of open grooves on the end faces of both ends of the strip plate, when the mesh plate is bent in a ring shape, the open grooves on the end faces of both ends of the mesh plate in the length direction are connected one by one to form the second mesh 220, and the material utilization rate can be optimized, so that the mesh cover ring 20 is formed with mesh holes all around the circumference, and there is no area without mesh holes. Therefore, the air intake area can be increased, the uniformity of the air intake can be improved, and the overall smoking effect can be improved.

[0112] The mesh cover 1 provided by the present invention comprises a mesh cover 10 and a mesh cover ring 20, wherein the mesh cover 10 is connected to an opening at one end of the mesh cover ring 20, and the mesh cover ring 20 is formed by a mesh plate having a first mesh hole being bent in a ring shape and fixed at both ends, and a plurality of opening grooves are respectively arranged on the end surfaces of both ends of the mesh plate along the width direction of the mesh plate, and after the mesh plate is bent and fixed, the opening grooves on the end surfaces of both ends of the mesh plate in the length direction correspond to each other and are connected to form a second mesh hole 220. The mesh holes are arranged in the circumference of the annular structure surrounded by the mesh cover ring 20, and compared with the prior art, the air intake area is increased and the smoking effect is improved.

[0113] The range hood provided by the present invention comprises the above-mentioned mesh cover 1 , so the range hood also has the advantages of the mesh cover 1 .

[0114] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A range hood, characterized in that: The mesh cover comprises a mesh cover (10) and a mesh cover ring (20), wherein the mesh cover (10) is connected to an opening at one end of the mesh cover ring (20), and is characterized in that the mesh cover ring (20) is formed by a mesh plate having a first mesh hole which is bent in a ring shape and fixed at both ends, and a plurality of opening grooves are respectively arranged on both end surfaces of the mesh plate along the width direction of the mesh plate, and after the mesh plate is bent and fixed, the opening grooves on the both end surfaces of the mesh plate in the length direction correspond to each other and are butted to form a second mesh hole (220); The range hood further comprises a fume collecting hood (2) and a rectifying net assembly (4), wherein the rectifying net assembly (4) comprises a rectifying net body (41), wherein the rectifying net body (41) is provided with a plurality of net portions (42) connected in sequence, wherein the outer side wall of the net portion (42) close to the center of the rectifying net body (41) of two adjacent net portions (42) is connected to the inner side wall of the other net portion (42), and the two adjacent net portions (42) are staggered.

2. The range hood according to claim 1, characterized in that: The smoke collecting hood (2) is provided with an opening at the lower end, a baffle (6) is provided in the middle of the opening, the baffle (6) divides the opening into two smoke inlets (3), and the rectifying net assembly (4) is arranged above the baffle (6).

3. The range hood according to claim 1, characterized in that: The range hood further comprises a smoke collecting hood (2) and a connecting plate assembly (5); the smoke collecting hood (2) is provided with a smoke inlet (3); the mesh cover is mounted at the smoke inlet (3); the connecting plate assembly (5) is mounted at the upper end of the smoke collecting hood (2); a smoke inlet channel is formed between the connecting plate assembly (5) and the mesh cover; The connecting plate assembly (5) comprises a connecting plate body, an opening (53) is provided on the connecting plate body, and a buffer module (51) is provided on the connecting plate body near the opening (53) along the flow direction of the airflow, and the buffer module (51) protrudes from the plane where the connecting plate body is located to the air inlet side of the opening (53).

4. The range hood according to claim 3, characterized in that: Along the lateral direction of the connecting plate body, airflow dividing modules are respectively arranged on both sides of the opening (53) with the same protruding direction as the buffer module (51), and the airflow dividing module includes a plurality of dividing parts (52) arranged at intervals along the longitudinal direction of the connecting plate body, and the dividing parts (52) extend along the lateral direction of the connecting plate body.

5. The range hood according to claim 1, characterized in that: The size of the first mesh is the same as the size of the second mesh (220).

6. The range hood according to claim 1, characterized in that: A plurality of grooves (232) are provided on one of the two ends in the length direction of the mesh plate along the width direction of the mesh plate, and a plurality of protrusions (231) are provided on the other end surface along the width direction of the mesh plate corresponding to the grooves (232) one by one, and the grooves (232) and the protrusions (231) are correspondingly plugged and fixed.

7. The range hood according to claim 6, characterized in that: The plurality of grooves (232) and the plurality of protrusions (231) are respectively arranged at intervals along the width direction of the mesh plate.

8. The range hood according to claim 6, characterized in that: The opening groove of the end surface corresponding to the end of the groove (232) is located between two adjacent grooves (232), and the opening groove of the end surface corresponding to the end of the protrusion (231) is located between two adjacent protrusions (231).

9. The range hood according to claim 1, characterized in that: The inner circumference of the mesh ring (20) is provided with a first concave-convex fitting portion (210), and the circumference of the mesh cover (10) is provided with a second concave-convex fitting portion (110) corresponding to the first concave-convex fitting portion (210); the second concave-convex fitting portion (110) on the mesh cover (10) and the first concave-convex fitting portion (210) on the mesh ring (20) are plug-fitted and fixed.

10. The range hood according to claim 9, characterized in that: The first concave-convex matching portion (210) is a dovetail-shaped structure, and the second concave-convex matching portion (110) is a dovetail groove matching the dovetail-shaped structure; And / or, the second concave-convex matching portion (110) is a dovetail-shaped structure, and the first concave-convex matching portion (210) is a dovetail groove matching the dovetail-shaped structure.

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