CN110594819B

CN110594819B - Fume exhaust fan

Info

Publication number: CN110594819B
Application number: CN201910871328.3A
Authority: CN
Inventors: 王磊; 申志贤; 张青松; 朱昆仑
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2021-04-16
Anticipated expiration: 2039-09-16
Also published as: CN110594819A

Abstract

The invention discloses a range hood, which comprises a box body and a fan, and is characterized in that: realize sliding connection through linkage between box and the fan, linkage includes shock pad, shock pad mount and support, the shock pad be connected fixedly with the shock pad mount and with support sliding connection, one of them setting of shock pad mount and support is on the medial surface of box, another of shock pad mount and support sets up on the fan for the fan can slide into in the box along the extending direction of support. Compared with the prior art, the invention has the advantages that: through setting up linkage and set up the shock pad in linkage for when the fan realized modularized design and installation, keep apart the fan vibration, eliminate vibration and the unusual noise that leads to.

Description

Fume exhaust fan

Technical Field

The invention relates to an oil fume purification device, in particular to a range hood.

Background

The range hood has become one of indispensable kitchen electrical appliances in modern homes, and generally the range hood comprises a top suction type and a side suction type. 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, accelerated by the fan and collected by the volute and guided to be discharged out of a room.

The existing range hood fan system is fixed on the top back plate assembly or the fan frame assembly, for example, a centrifugal fan volute for the range hood disclosed in the applicant's chinese patent with application number 201710317931.8 includes a volute front cover, a volute back cover, and a volute annular wall connected between the volute front cover and the volute back cover, wherein a volute bracket is welded on one side of the volute back cover away from the volute front cover, and the volute back cover is symmetrically arranged near the edge.

When the range hood works, the vibration of the motor of the fan causes the resonance of a fan system, and the resonance can be transmitted to the fan frame through the bracket and then to the whole range hood body, so that the resonance of the whole range hood is caused. In order to improve the effect of oil smoke absorption, the air quantity of the range hood is improved in a common way, so that the problem of vibration of the whole range hood is obvious day by day, and the vibration and the noise caused by the vibration bring troubles to users.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a range hood which can eliminate vibration and abnormal noise caused by the vibration, aiming at the defects of the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a range hood, includes box and fan, its characterized in that: realize sliding connection through linkage between box and the fan, linkage includes shock pad, shock pad mount and support, the shock pad be connected fixedly with the shock pad mount and with support sliding connection, one of them setting of shock pad mount and support is on the medial surface of box, another of shock pad mount and support sets up on the fan for the fan can slide into in the box along the extending direction of support.

For the sliding property that improves shock pad and support, the support plays the guide effect to the slip of shock pad simultaneously, the shock pad is close to the sunken spout that forms of the direction of keeping away from the support of one side of support the support is close to the one end bending type of shock pad and is formed with the turn-ups, the shape adaptation at the top of support is kept away from to turn-ups shape and spout, the turn-ups inserts in the spout and forms sliding fit.

The shock pad is fixed a position when being convenient for shock pad and shock pad mount installation, the shock pad mount is close to one side of shock pad and extends to the shock pad direction and form a spacing flange, the shock pad is close to one side of shock pad mount and caves in towards keeping away from shock pad mount direction and forms a spacing recess, spacing flange can insert in the spacing recess.

Preferably, the shock pad mount is connected fixedly with the fan, the support extends in the front-rear direction and is connected fixedly with the left side of the box body or the inner side surface of the right side of the box body, and the shock pad is connected and fixed below the shock pad mount and is supported on the support.

In order to ensure the connection stability of the fan and the box body, the suspension devices are provided with four groups of suspension devices, two groups of suspension devices are respectively positioned at the left side and the right side in the box body, and the suspension devices of each group are arranged at intervals up and down and respectively correspond to the upper part and the lower part of the fan.

In order to enable the fan to smoothly slide into the box body and then form a whole air channel, the air outlet device further comprises an air outlet plate, a hollow adapter is arranged on the upper portion of the fan, and the adapter is located between an air outlet of the fan and the air outlet plate and used for communicating the air outlet of the fan with the air outlet plate.

In order to prevent the vibration of the fan from being transmitted to the box body, a sealing gasket is arranged between the adapter and the air outlet plate.

For the leakproofness of strengthening adapter and air outlet plate, the adapter has annular top surface, the top surface is parallel with the bottom surface of air outlet plate, the inside undercut of top surface of adapter is formed with step portion, seal ring includes annular first packing ring, forms the second packing ring in first packing ring bottom, the second packing ring sets up the medial extremity below at first packing ring, the second packing ring is formed by one section distance of inside end outside downwardly extending back, inside downwardly extending of first packing ring for the medial wall of second packing ring forms from inside to outside sunken recess, air outlet plate card is gone into between first packing ring and second packing ring, the lower part butt of second packing ring is in the step portion of adapter.

In order to facilitate the disassembly and assembly of the fan and the sealing performance of the switching port and the air outlet plate, the included angle between one surface of the support facing the shock pad and the horizontal plane is alpha, the included angle between the air outlet plate and the horizontal plane is beta, and alpha is less than beta.

Preferably, the value ranges of alpha and beta are-10 degrees to alpha less than or equal to 30 degrees and alpha +5 degrees to beta less than or equal to.

Compared with the prior art, the invention has the advantages that: by arranging the suspension device and arranging the shock pad in the suspension device, the vibration of the fan is isolated while the fan is modularly designed and installed, and the vibration and abnormal noise caused by the vibration are eliminated; the switching port is arranged, so that the conduction of an air duct is facilitated when the fan is installed; through set up seal ring between switching mouth and air outlet board, further keep apart the fan vibration.

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 a hidden cover plate of the range hood according to the embodiment of the present invention;

FIG. 3 is a schematic view of a hidden fan of the range hood of FIG. 2;

fig. 4 is an exploded schematic view of a suspension device of a range hood according to an embodiment of the present invention;

fig. 5 is a schematic view of an adapter of the range hood according to the embodiment of the present invention;

FIG. 6 is a schematic view of a sealing gasket of the range hood according to the embodiment of the present invention;

FIG. 7 is a sectional view of the range hood according to the embodiment of the present invention (the section is a front-back plane, and the fan is hidden);

fig. 8 is a sectional view (the section is a left-right direction plane) of the range hood according to the embodiment of the present invention;

FIG. 9 is an enlarged view of a portion I of FIG. 8;

FIG. 10 is a schematic view of a range hood according to an embodiment of the present invention in an installed state;

fig. 11 is a side view of the hidden box of the extractor hood of fig. 10.

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 "central," "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 are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Referring to fig. 1, 2 and 9, a range hood is a ceiling range hood, and comprises a fume collecting hood 1, a box body 2 arranged above the fume collecting hood 1, a box body cover plate 3, a fan 4 arranged in the box body 2, an air outlet plate 5, an air outlet hood 6, an adapter 7 and a suspension device 8. The fan 4 includes a volute 41 and an impeller 42 disposed in the volute 41, and an air inlet of the fan 4 faces forward or backward.

The box 2 is cavity, and its front side and open-top, box apron 3 set up the front side at box 2, and air outlet plate 5 then sets up the position that is close to the top at box 2, and fan 4 sets up in the cavity that box 2, box apron 3 and air outlet plate 5 constitute jointly. When the range hood works, oil smoke enters the box body 2 through the smoke collecting hood 1 and is discharged through the fan 4 and the air outlet hood 5.

The fan 4 is connected with the box body 2 through a suspension device 8. Referring to fig. 2 to 4, in the present embodiment, the number of the suspension devices 8 is four, and two of the four suspension devices are respectively located at the left and right sides in the box 2, and the suspension devices 8 of each group are arranged at intervals up and down and respectively correspond to the upper part and the lower part of the fan 4. Each suspension device 8 includes two shock absorbing pads 81, a shock absorbing pad fixing frame 82 and a bracket 83, wherein the shock absorbing pads 81 are arranged at intervals in the front-rear direction, and the bottom surface of each shock absorbing pad 81 is recessed upward to form a sliding groove 811. The shock pad fixing frame 82 is fixedly connected with the fan 4, the shock pad 81 is fixedly connected below the shock pad fixing frame 82, and the shock pad can be fixedly connected through screws. The bottom surface of the cushion holder 82 is extended downward to form a limiting flange 821, the top surface of the cushion 81 is recessed downward to form a limiting groove 832, and the limiting flange 821 can be inserted into the limiting groove 832 to position the cushion 81 and the cushion holder 82 when being installed. The support 83 is used for being connected fixedly with the medial surface on the left side or the right side of the box 2, the support 83 extends in the front-rear direction, the upper end of the support 83 is bent towards the direction outside the box 2 to form a flanging 831, the upper end of the support 83 is matched with the shock pad 81, the shape of the flanging 831 is matched with the shape of the top of the sliding groove 811, and the flanging 831 is inserted into the sliding groove 811, so that the support 83 and the shock pad 81 are in sliding fit, and the support 83 can support the shock pad 81. Thus, the suspension device 8 can prevent the vibration of the fan 4 from being transmitted to the case 2 while the fan 4 is mounted on the suspension device 81.

Alternatively, the up and down positions of the cushion 81 and the bracket 83 may be interchanged.

Referring to fig. 7, the angle between the top surface of the bracket 83 and the horizontal plane is α, preferably-10 ° or more and 30 ° or less, more preferably α is 0 ° or more, which facilitates manufacturing. The included angle between the air outlet plate 5 and the horizontal plane is beta, alpha is less than beta, and preferably, alpha plus 5 degrees is less than or equal to beta.

The vibration isolation is also required between the fan 4 and the air outlet plate 5 on the premise of ensuring the sealing, so that the vibration of the fan 4 is not transmitted to the air outlet plate 5. The upper portion of the fan 4 is provided with a switching port 7, and the switching port 7 is arranged at an air outlet of the volute 41. The air outlet cover 6 is arranged above the air outlet plate 5, the adapter 7 is positioned below the air outlet plate 5, and the air outlet cover 6 corresponds to the adapter 7 in position. Referring to fig. 5, the adapter 7 is hollow, so that the oil smoke can pass through the adapter 7 and be discharged after entering the air outlet cover 7. The adapter 7 has an annular top surface 71, and the top surface 71 is in the same inclination direction with the air outlet plate 5, that is, the adapter 7 only needs to be mounted on the scroll casing 41, and the top surface 71 is parallel to the air outlet plate 5 (the position of the air outlet plate 5 corresponding to the adapter 7 is in a uniform flat plate shape, so the inclination angle of the air outlet plate 5 is the inclination angle of the bottom surface of the air outlet plate 5). A step portion 72 is formed by recessing the inside of the top surface 71 of the adapter 7 downward, and the step portion 72 is similarly annular and adjacent to the hollow space inside the adapter 7.

Referring to fig. 6, 8 and 9, the air outlet plate 5 and the adapter 7 are not in direct contact, and are sealed and isolated by a sealing gasket 9. The sealing gasket 9 includes a ring-shaped first gasket 91, and a second gasket 92 formed at the bottom of the first gasket 91, and the first gasket 91 and the second gasket 92 are integrally formed. The second washer 92 is disposed below the inner end of the first washer 91. The second washer 92 is formed by extending an inner end portion of the first washer 91 outwardly and downwardly for a distance, and then inwardly and downwardly for a distance, that is, the second washer 92 has a cross-sectional shape of a substantially horizontal V-shape with an inner side open such that an inner side wall of the second washer 92 forms a recess 93 depressed from the inside to the outside. The outlet plate 5 is interposed between the first gasket 91 and the second gasket 92, and the lower portion of the second gasket 92 abuts against the step portion 72 of the adapter 7. The sealing washer 9 can be fixed to the air outlet plate 5 or to the adapter 7. In view of the gravity, it is preferable to fix the groove 93 to the outlet plate 5 in order to prevent the groove from being compressed.

Since the second gasket 92 is not a flat gasket but the step part 72 is flat, the second gasket 92 and the step part 72 are not completely attached. When the range hood works, a high-pressure area is formed in the groove 93, a low-pressure area is formed in the space between the second gasket 92 and the step part 72, and the pressure difference can press the step part 72 of the lower adapter opening 7 of the second gasket 92 tightly to form better sealing.

To facilitate the installation of the sealing gasket 9, the top surface 71 only surrounds the front, left and right sides of the step portion 72, so that when the fan 4 is pushed into the casing 2, the sealing gasket 9 can smoothly slide into the step portion 72 from the rear end of the adapter port 7.

The angles alpha and beta are not the same, otherwise the fan 4 and the air outlet plate 11 are always kept in contact in the process of pushing the fan 4, and the assembly is influenced. The relationship between the two included angles of α and β set in this embodiment can facilitate the disassembly and assembly of the fan 4 and ensure the sealing with the air outlet plate 11. Referring to fig. 10 and 11, in the open state of the box cover 3, the blower 4 is pushed into the box 2 along the inclination direction of the bracket 83, and is covered on the box cover 3 after reaching the target position. In the unset state, a gap is kept between the adapter port 7 on the fan 4 and the air outlet plate 11, the air outlet plate 11 cannot interfere with a fan system, and the sealing washer 9 is guaranteed to slide into the step part 72 of the adapter port 7. When the fan 4 is dismounted, the adapter 7 can be separated from the air outlet plate 11 when the fan 4 slightly moves outwards, so that the dismounting is convenient.

Claims

1. The utility model provides a range hood, includes box (2), fan (4) and air outlet board (5), its characterized in that: the box body (2) and the fan (4) are in sliding connection through a suspension device (8), the suspension device (8) comprises a shock pad (81), a shock pad fixing frame (82) and a support (83), the shock pad (81) is fixedly connected with the shock pad fixing frame (82) and is in sliding connection with the support (83), one of the shock pad fixing frame (82) and the support (83) is arranged on the inner side face of the box body (2), and the other of the shock pad fixing frame (82) and the support (83) is arranged on the fan (4), so that the fan (4) can slide into the box body (2) along the extending direction of the support (83); the upper portion of fan (4) is provided with hollow switching mouth (7), switching mouth (7) are located between air outlet and the air outlet board (5) of fan (4), with the air outlet and the air outlet board (5) intercommunication of fan (4), be provided with seal ring (9) between switching mouth (7) and air outlet board (5).

2. The range hood of claim 1, wherein: one side that shock pad (81) are close to support (83) is sunken to form spout (811) to the direction of keeping away from support (83), support (83) are close to the one end bending type of shock pad (81) and are formed with turn-ups (831), the shape adaptation at the top of support (83) is kept away from in shape and spout (811) of turn-ups (831), turn-ups (831) insert in spout (811) and form sliding fit.

3. The range hood of claim 1, wherein: one face that shock pad mount (82) are close to shock pad (81) extends towards shock pad (81) direction and forms spacing flange (821), shock pad (81) are close to the sunken spacing recess (832) that forms of shock pad mount (82) direction far away that forms of shock pad mount (82), spacing flange (821) can insert in spacing recess (832).

4. The range hood of claim 1, wherein: the damping pad fixing frame (82) is fixedly connected with the fan (4), the support (83) extends in the front-rear direction and is fixedly connected with the inner side face of the left side or the right side of the box body (2), and the damping pad (81) is fixedly connected below the damping pad fixing frame (82) and is supported on the support (83).

5. The range hood of claim 1, wherein: the suspension devices (8) are provided with four groups of two suspension devices which are respectively positioned at the left side and the right side in the box body (2), and the suspension devices (8) of each group are arranged at intervals up and down and respectively correspond to the upper part and the lower part of the fan (4).

6. The range hood according to any one of claims 1 to 5, wherein: the adapter (7) is provided with an annular top surface (71), the top surface (71) is parallel to the bottom surface of the air outlet plate (5), the inner side of the top surface (71) of the adapter (7) is recessed downwards to form a step part (72), the sealing gasket (9) comprises a first annular gasket (91) and a second annular gasket (92) formed at the bottom of the first gasket (91), the second washer (92) is disposed below the inner end of the first washer (91), the second gasket (92) is formed by extending the inner end of the first gasket (91) outwards and downwards for a certain distance and then inwards and downwards for a certain distance, so that the inner side wall of the second gasket (92) forms a groove (93) which is concave from inside to outside, the air outlet plate (5) is clamped between a first gasket (91) and a second gasket (92), the lower part of the second gasket (92) abuts against the step part (72) of the adapter (7).

7. The range hood according to any one of claims 1 to 5, wherein: the included angle between one surface of the support (83) facing the shock absorption pad (81) and the horizontal plane is alpha, and the included angle between the air outlet plate (5) and the horizontal plane is beta, and alpha is more than beta.

8. The range hood of claim 7, wherein: the value ranges of alpha and beta are that alpha is more than or equal to minus 10 degrees and less than or equal to 30 degrees, and alpha plus 5 degrees and less than or equal to beta.