CN111121118B

CN111121118B - Range hood with rectifying plate and control method

Info

Publication number: CN111121118B
Application number: CN201811273343.XA
Authority: CN
Inventors: 何立博
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2018-10-30
Filing date: 2018-10-30
Publication date: 2022-05-17
Anticipated expiration: 2038-10-30
Also published as: CN111121118A

Abstract

The invention discloses a range hood, which comprises a smoke collecting hood, wherein an air inlet is formed in the smoke collecting hood, an upward concave smoke collecting cavity is formed in the smoke collecting hood, a rectifying plate is arranged in the smoke collecting cavity and below the air inlet, the front part of the rectifying plate is clamped with the smoke collecting hood through a clamping structure, the rear part of the rectifying plate is hinged with the smoke collecting hood, the clamping structure comprises clamping jaws arranged on two sides of the front part of the upper surface of the rectifying plate and clamping buckles arranged on the smoke collecting hood and corresponding to the clamping jaws, and the range hood is characterized in that: the buckle includes two can be when pressing from both sides tightly mutually with the jack catch joint, can keep away from each other after receiving the inside power of buckle and strut and the shell fragment that breaks away from with the jack catch. Also discloses a control method of the range hood.

Description

Range hood with rectifying plate and control method

Technical Field

The invention relates to kitchen equipment, in particular to a range hood, which is provided with a rectifying plate and a method for controlling the action of the rectifying plate of the range hood.

Background

The range hood has become one of indispensable kitchen household electrical appliances in modern families, and is used for exhausting oil smoke generated in the cooking process of a stove. Generally, the range hood comprises a top suction type range hood and a side suction type range hood, and the top suction type range hood has more and more extensive application due to the advantages of neatness, lightness, small occupied space and the like.

The top-suction type range hood generally comprises a fume collecting hood and a fan shell positioned on the fume collecting hood, wherein a centrifugal fan is arranged in the fan shell. A range hood as disclosed in chinese patent application No. 201310111398.1, comprising a fan for generating an air flow, an inner panel on the inner face of the hood, a filter detachably mounted on the air inlet of the inner panel, and a rectifying plate on the upstream side of the air flow of the filter, wherein the rectifying plate has a pair of mounting and engaging parts on the front side when mounted on the range hood, the filter has a rectifying plate mounting part at the position corresponding to the mounting and engaging parts of the rectifying plate, the front side of the rectifying plate can be supported by the clamping of the mounting clamping part arranged on the rectifying plate and the rectifying plate mounting part arranged on the filter, the rectifying plate is inclined towards the inner side, since the oil reservoir is provided near the other side of the flow regulating plate, the oil dropping from the filter can be collected in the oil reservoir while being deflected to the back side.

The smoke exhaust ventilator disclosed in the chinese patent with application number 201620098707.5 comprises a smoke exhaust ventilator body, a smoke collecting hood and a smoke guide plate, wherein an oil collecting cup is arranged below one side of the smoke guide plate, an air inlet is arranged in the smoke collecting hood, the smoke guide plate is connected with the smoke exhaust ventilator body through a smoke guide plate mounting structure, the smoke guide plate is detachably and movably connected with the smoke exhaust ventilator body through the mounting structure, the mounting structure comprises a hook seat and hook feet, the hook feet are symmetrically arranged along the long edge direction of the smoke guide plate, the hook seat corresponding to the positions of the hook feet is arranged on the smoke guide plate, the hook feet are hung on the hook seat, the mounting feet are symmetrically arranged on the other long edge direction of the smoke guide plate opposite to the hook feet, and the mounting seat corresponding to the positions of the mounting feet is arranged on the smoke guide plate.

The extractor hood is provided with the rectifying plate under the fume collecting hood (smoke exhaust hood), so that the fume leakage phenomenon can be effectively reduced, but the disassembly and cleaning of the rectifying plate require a user to bend down to pull down or push to disassemble or clamp the rectifying plate buckle. Under the general condition, cowling panel shell fragment or buckle need can bear dead weight and partial greasy dirt and certain impact, all have to let the user push-and-pull with great strength during the design (shell fragment and buckle loose easy vibration and drop), when the strength that the user pushed and pulled the cowling panel was not enough to make to overcome shell fragment elasticity, the user probably can't take off or close the cowling panel, leads to the unable normal washing of user and closes, and sound is difficult to hear.

Disclosure of Invention

The first technical problem to be solved by the invention is to solve the problems existing in the prior art, and provide a range hood with a rectifying plate, which can ensure that the rectifying plate does not fall off after being closed, reduce the difficulty of taking off the rectifying plate by a user, weaken the clicking sound and improve the user experience.

The second technical problem to be solved by the present invention is to provide a control method for the above range hood.

The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides a range hood, includes the collection petticoat pipe, the air intake has been seted up on the collection petticoat pipe, be formed with the collection smoke chamber to the indent in the collection petticoat pipe, the below that is located the air intake is provided with the cowling panel, the front portion of cowling panel is through joint structure and collection petticoat pipe block, the rear portion and the collection petticoat pipe of cowling panel are articulated, the joint structure is including setting up the jack catch in the upper surface front portion both sides of cowling panel and setting up the buckle that corresponds with the jack catch on the collection petticoat pipe, its characterized in that: the buckle includes two can be when pressing from both sides tightly mutually with the jack catch joint, can keep away from each other after receiving the inside power of buckle and strut and the shell fragment that breaks away from with the jack catch.

In order to apply force to the elastic sheets, the buckle comprises a cam arranged between the two elastic sheets and a driving device used for driving the cam to rotate in the longitudinal plane, the length of the cam is larger than the distance between the two elastic sheets, and the width of the cam is smaller than or equal to the distance between the two elastic sheets, so that the cam can apply force which is far away from the two elastic sheets to be spread when rotating.

In order to facilitate the detection of the pressure between the clamping part and the clamping jaws and automatically control the driving device, the bottom of each elastic sheet protrudes towards the other elastic sheet to form a clamping part matched with the clamping jaws, and a first pressure sensor used for detecting the pressure between the clamping part and the clamping jaws is arranged on the inner side surface of the clamping part of at least one of the elastic sheets.

In order to facilitate the detection of the pressure between the clamping part and the clamping jaw, so as to automatically control the driving device, a second pressure sensor for detecting the pressure between the clamping part and the clamping jaw is arranged on the inner side surface of the clamping part of at least one elastic sheet, the first pressure sensor is positioned on the upper part of the inner side surface of the clamping part, and the second pressure sensor is positioned on the lower part of the inner side surface of the clamping part.

Further, for the joint cooperation of jack catch and buckle, the jack catch is close to the inside sunken first draw-in groove that forms in position at top, the part that the jack catch is located first draw-in groove top outwards extrudes and forms the location arch, forms the protruding second draw-in groove that passes of location that supplies the jack catch between two block portions, the protruding size in location is greater than the size of second draw-in groove, the first draw-in groove adaptation of block portion and jack catch.

In order to facilitate the clamping jaw to be clamped in from the second clamping groove better and keep contact pressure with the two pressure sensors, a first included angle is formed between the first clamping groove of the clamping jaw and the central axis of the clamping jaw, a second included angle is formed between the transition position of the positioning protrusion of the clamping jaw and the central axis of the clamping jaw, the value range of the first included angle is 20-50 degrees, and the value range of the second included angle beta is 30-42 degrees.

The technical scheme adopted by the invention for solving the second technical problem is as follows: a control method of the range hood comprises the following steps:

1) when the first pressure sensor detects that the pressure between the clamping part and the clamping jaw exceeds a preset first threshold value Fa, the rectifying plate is judged to be disassembled, the driving device drives the cam to rotate, and the cam props up the two elastic sheets so as to assist in disassembling the rectifying plate;

2) when the rectifying plate is installed back, the positioning protrusions of the clamping jaws firstly touch the second pressure sensor, when the second pressure sensor detects that the pressure between the clamping part and the clamping jaws exceeds a preset second threshold Fb, the time is delayed for t, after the clamping jaws are completely clamped, the driving device drives the cam to reversely rotate back to the initial state, meanwhile, the first pressure sensor detects the pressure of the clamping jaws, and then whether the rectifying plate is in place is determined.

Compared with the prior art, the invention has the advantages that: through the arrangement of the cam structure, the force for opening the elastic sheet is automatically applied from the inside of the buckle, so that a user is facilitated to assemble and disassemble the rectifying plate; through setting up pressure sensor, detect the pressure between jack catch and the shell fragment, the motion that can the automatic control cam can guarantee not to drop after closing, utilizes the supplementary shell fragment of strutting of cam when the user needs to take off again, reduces the degree of difficulty that the user took off, weakens the sound of clicking, promotes user experience.

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 of the installation of the smoke collecting hood and the fairing of the range hood according to the embodiment of the invention;

FIG. 3 is an exploded view of the fume collecting hood and the flow adjusting plate of the range hood according to the embodiment of the present invention;

fig. 4 is a schematic view of an elastic sheet and a cam of a buckle of a fairing of the range hood according to the embodiment of the invention;

fig. 5 is a schematic view of a first connecting seat and a claw of a fairing of the range hood according to the embodiment of the invention;

fig. 6 is a sectional view of a smoke collecting cover and a flow rectification plate of the range hood of the embodiment of the invention in a closed state;

FIG. 7 is an enlarged schematic view of portion I of the cross-sectional view of FIG. 6;

fig. 8 is a sectional view of a smoke collecting hood and a flow rectification plate of the range hood of the embodiment of the invention in an open state;

fig. 9 is an enlarged view of a portion ii of the cross-sectional view of fig. 8.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

Referring to fig. 1 to 7, a range hood includes a fume collecting hood 1, a box 2 disposed above the fume collecting hood 1, and a bar-shaped oil cup 3 disposed below the rear side of the fume collecting hood 1. An upward concave smoke collecting cavity 11 is formed in the smoke collecting cover 1, an air inlet 12 is formed in the smoke collecting cover 1, the smoke collecting cavity 11 is communicated with the interior of the box body 2, and therefore the oil smoke can enter the box body 2 through the air inlet 12 and is discharged through a fan system (not shown) in the box body 2. The air inlet 12 is provided with a filter screen 4.

A rectifying plate 5 is arranged in the smoke collection cavity 11 and below the air inlet 12. The rear side edge of the rectifying plate 5 is positioned above the oil cup 3, and the edge of the rectifying plate 5 forms a curled edge 53, wherein the curled edge 53 at the rear side is provided with a plurality of oil dripping holes 531 arranged at intervals. Therefore, when the oil smoke flows to the upper surface of the rectifying plate 5, the oil and fat can flow to the rear side along the upper surface of the rectifying plate 5 after being separated, and the oil smoke flows into the oil cup 3 through the oil drip hole 531 at the rear side curled edge 53.

The front part of the fairing 5 is clamped with the smoke collecting hood 1 through a clamping structure 51, and the rear part is hinged with the smoke collecting hood 1 through a hinge structure 52, so that the installation of the fairing 5 and the smoke collecting hood 1 is completed.

In the embodiment, the front part of the fairing 5 and the fume collecting hood 1 are detachably connected through a clamping structure 51 in the form of a latch assembly. The clamping structure 51 comprises a first connecting seat 511 fixed on both sides of the front part of the upper surface of the rectifying plate 5, a claw 512 arranged on the first connecting seat 511, and a buckle 513 arranged on the smoke collecting cover 1 at a position corresponding to the claw 512. The first connection base 511 may be connected and fixed to the rectifying plate 5 by welding or bonding. The position of the claw 512 near the top is recessed inwards to form a first catching groove 5121, and the part (top) of the claw 512 above the first catching groove 5121 is protruded outwards to form a positioning protrusion 5122. The buckle 513 includes a main body 5131 with an opening at the bottom, and two elastic pieces 5132 disposed in the main body 5131, the two elastic pieces 5132 are arranged at intervals in the front and rear directions (or arranged at intervals in the left and right directions), a second slot 5133 for the positioning protrusion 5122 of the claw 512 to pass through is formed at an interval between the bottoms of the two elastic pieces 5132, and the size of the positioning protrusion 5122 is larger than that of the second slot 5133. The bottom of each elastic sheet 5132 protrudes toward the other elastic sheet 5132 to form a clamping portion 5134, and the second clamping groove 5133 is formed between the two clamping portions 5134. The engaging portion 5134 is fitted with the first engaging groove 5121 of the pawl 512, so that the engaging portion 5134 can be engaged into the first engaging groove 5121. In order to facilitate the clamping of the clamping portion 5134, an inner side surface of the clamping portion 5134 facing the first clamping groove 5121 is a spherical surface, and the shape of the first clamping groove 5121 is adapted to the spherical surface.

Also provided in the body 5131 are a cam 5135 and a driving means 5136 for driving the cam 5135 to rotate in the longitudinal plane (vertical plane). The cam 5135 is located between the two elastic sheets 5132 and above the engaging portion 5134 of the elastic sheet 5132. The driving unit 5136 may be a motor, and the structure for driving the cam 5135 to rotate may be a conventional one, and will not be described herein. The length of the cam 5136 is greater than the distance between the two elastic sheets 5132, and the width is less than or equal to the distance between the two elastic sheets 5132.

A first pressure sensor 5137 and a second pressure sensor 5138 are arranged on the inner side surface of the clamping part 5134 of at least one elastic sheet 5132. The first pressure sensor 5137 is located at the upper portion of the inner side surface of the engaging portion 5134, and the second pressure sensor 5138 is located at the lower portion of the inner side surface of the engaging portion 5134.

A first included angle α is formed between the transition position of the first clamping groove 5121 and the positioning protrusion 5122 of the jaw 512 and the central axis X of the jaw 512, and a second included angle β is formed between the transition position of the positioning protrusion 5122 and the first clamping groove 5122 of the jaw 512 and the central axis X of the jaw 512. In order to facilitate the clamping of the clamping jaw 512, the clamping jaw can be clamped into the second clamping groove 5133 better, and keeps contact pressure with the two pressure sensors, the value range of the first included angle alpha is 20-50 degrees, and the value range of the second included angle beta is 30-42 degrees.

The hinge structure 52 includes a second connecting seat 521 fixed on both sides of the rear portion of the upper surface of the rectifying plate 5, a hinge body 522 arranged on the second connecting seat 521, and a bracket 523 arranged on the lower surface of the smoke collecting cover 1 at a position corresponding to the second connecting seat 521, wherein the hinge body 522 is rotatably connected with the bracket 523. The second connecting seat 521 may be fixed to the rectifying plate 5 by welding or bonding.

Before use, the hinge body 522 of the hinge structure 52 is hinged to the bracket 523; then, the latch 512 is clipped between the two elastic sheets 5132 upwards, due to the elasticity of the elastic sheets 5132, the positioning protrusion 5122 can pass through the second slot 5133 and be placed on the top of the engaging portion 5134 of the elastic sheet 5132, and abut against the engaging portion 5134, while the first slot 5121 of the latch 512 is opposite to the second slot 5133 of the latch 513, and the engaging portion 5134 is clipped in the first slot 5133, thereby completing the installation of the rectifying plate 5. In the initial state, the cam 5135 is in a transverse state, i.e., the length extends in the longitudinal direction and the width extends in the transverse direction, and the two resilient pieces 5132 are naturally clamped to each other. See fig. 6 and 7.

When the first pressure sensor 5137 detects that the pressure between the engaging portion 5134 and the claw 512 exceeds a preset first threshold Fa, it is determined that the user wants to detach the current plate 5, the driving device 5136 drives the cam 5135 to rotate, and when the size is greater than the distance between the two elastic pieces 5132 during rotation, the cam 5135 expands the two elastic pieces 5132 until the cam 5135 rotates 90 °, the length extends in the transverse direction, the width extends in the longitudinal direction, and the two elastic pieces 5132 are in a state of being completely away from each other to be expanded, so that the detachment of the current plate 5 by the user can be assisted. See fig. 8 and 9.

When the user puts back the current plate 5, firstly, the positioning protrusion 5122 of the claw 512 contacts the second pressure sensor 5138, when it is detected that the pressure between the clamping portion 5134 and the claw 512 exceeds the preset second threshold Fb, after a time t, after the claw 512 is completely clamped into the rear driving device 5136, the cam 5135 is driven to reversely rotate back to the initial state shown in fig. 6 and 7, and simultaneously, the first pressure sensor 5137 detects the pressure of the claw 512, so as to determine whether the current plate 5 is in place.

In addition, when the gravity of the clamping jaw 512 is detected to be exceeded by the aid of the first pressure sensor 5137, whether foreign matters of the range hood fall off or not is judged, and a user is prompted to maintain the range hood.

Claims

1. The utility model provides a range hood with cowling panel, includes collection petticoat pipe (1), air intake (12) have been seted up on collection petticoat pipe (1), be formed with directional fovea superior collection cigarette chamber (11) in collection petticoat pipe (1), the below that is located air intake (12) is provided with cowling panel (5) in collection petticoat pipe (11), the front portion of cowling panel (5) is through joint structure (51) and collection petticoat pipe (1) block, the rear portion and collection petticoat pipe (1) of cowling panel (5) are articulated, joint structure (51) are including setting up jack catch (512) in the upper surface front portion both sides of cowling panel (5) and setting up buckle (513) that correspond with jack catch (512) on collection petticoat pipe (1), its characterized in that: the buckle (513) comprises two elastic sheets (5132) which can be clamped with the clamping jaws (512) when clamped mutually and can be separated from the clamping jaws (512) after being separated away from each other by being subjected to the force in the buckle (513).

2. The range hood with the rectifying plate as claimed in claim 1, wherein: the buckle (513) comprises a cam (5135) arranged between the two elastic sheets (5132) and a driving device (5136) for driving the cam (5135) to rotate in a longitudinal plane, wherein the length of the cam (5135) is greater than the distance between the two elastic sheets (5132), and the width of the cam (5135) is less than or equal to the distance between the two elastic sheets (5132), so that the cam (5135) can apply a force which is far away from the two elastic sheets (5132) to expand when rotating.

3. The range hood with the rectifying plate as set forth in claim 2, wherein: the bottom of each elastic sheet (5132) protrudes towards the other elastic sheet (5132) to form an engaging part (5134) matched with the clamping jaw (512), and a first pressure sensor (5137) for detecting the pressure between the engaging part (5134) and the clamping jaw (512) is arranged on the inner side surface of the engaging part (5134) of at least one elastic sheet (5132).

4. The range hood with the rectifying plate as claimed in claim 3, wherein: the inner side surface of the clamping part (5134) of at least one elastic sheet (5132) is provided with a second pressure sensor (5138) for detecting the pressure between the clamping part (5134) and the clamping jaw (512), the first pressure sensor (5137) is positioned at the upper part of the inner side surface of the clamping part (5134), and the second pressure sensor (5138) is positioned at the lower part of the inner side surface of the clamping part (5134).

5. The range hood with the rectifying plate as claimed in claim 4, wherein: the clamping jaw (512) is inwards sunken to form a first clamping groove (5121) at a position close to the top, a part, located above the first clamping groove (5121), of the clamping jaw (512) protrudes outwards to form a positioning protrusion (5122), a second clamping groove (5133) for the positioning protrusion (5122) of the clamping jaw (512) to penetrate is formed between the two clamping parts (5134), the size of the positioning protrusion (5122) is larger than that of the second clamping groove (5133), and the clamping parts (5134) are matched with the first clamping groove (5121) of the clamping jaw (512).

6. The range hood with the rectifying plate as claimed in claim 5, wherein: form first contained angle (alpha) between the transition position of first draw-in groove (5121) and location arch (5122) of jack catch (512) and axis (X) of jack catch (512), form second contained angle (beta) between the transition position of location arch (5122) and first draw-in groove (5122) of jack catch (512) and axis (X) of jack catch (512), the value range of first contained angle (alpha) is 20 ~ 50, and the value range of second contained angle (beta) is 30 ~ 42.

7. A method of controlling a range hood as claimed in claim 5 or 6, comprising the steps of:

1) when the first pressure sensor (5137) detects that the pressure between the clamping part (5134) and the clamping jaw (512) exceeds a preset first threshold value Fa, the rectifying plate (5) is judged to be detached, the driving device (5136) drives the cam (5135) to rotate, and the cam (5135) props the two elastic sheets (5132) apart, so that the rectifying plate (5) is assisted to be detached;

2) when the rectifying plate (5) is installed back, the positioning protrusion (5122) of the clamping jaw (512) firstly touches the second pressure sensor (5138), when the second pressure sensor (5138) detects that the pressure between the clamping part (5134) and the clamping jaw (512) exceeds a preset second threshold Fb, the time t is delayed, after the clamping jaw (512) is completely clamped, the driving device (5136) drives the cam (5135) to reversely rotate back to the initial state, and meanwhile, the first pressure sensor (5137) detects the pressure of the clamping jaw (512), so that whether the rectifying plate (5) is in place or not is determined.