CN220506847U - Fume exhaust fan - Google Patents

Abstract

The utility model relates to a range hood, which comprises a machine body and a fan system, wherein the machine body comprises a first shell and a second shell which are connected together in a relatively movable mode, and the inner cavity of the first shell is in fluid communication with the inner cavity of the second shell: a movement gap allowing the first shell and the second shell to move relatively is reserved between the first shell and the second shell, and a sealing assembly in sealing contact with the first shell and the second shell is arranged at the movement gap. The advantages are that: the sealing in the relative movement process of the two is realized, the influence of the leakage of the air flow at the movement gap on the effective air quantity of the range hood is avoided, the noise problem caused by the flowing of the air flow at the position is also avoided to a certain extent, and the use experience of a user is improved.

Description

Fume exhaust fan

Technical Field

The utility model relates to the technical field of kitchen appliances, in particular to a range hood.

Background

The kitchen appliance is installed above a kitchen stove, and can quickly pump away waste burnt by the stove and smoke harmful to human bodies in the cooking process, and discharge the smoke out of a room, so that air pollution is reduced. When the range hood is installed, if the range hood is higher from the kitchen range, the use space is increased, the cooking vision is spacious, the operation is convenient, and the oil smoke absorbing effect is poor. If the fume collecting hood is close to the kitchen range, the fume absorbing effect is improved, but the space and the visual field are limited, and the operation is inconvenient.

In order to solve the technical problem, the Chinese patent application with the application number of CN201821783223.X (the authorized bulletin number is CN 209355322U) discloses a hidden range hood, which comprises a fume collecting cabinet and a fume collecting hood, wherein the fume collecting hood is communicated with the fume collecting cabinet, a first lifting mechanism is arranged between the fume collecting hood and the fume collecting cabinet, one end of the first lifting mechanism is connected with the fume collecting hood, the other end of the first lifting mechanism is connected with the fume collecting cabinet, and the first lifting mechanism drives the fume collecting hood to move up and down. The bottom surface of the fume collecting hood is provided with a channel communicated with the inner cavity of the fume collecting hood, the fume collecting hood further comprises a movable fume collecting hood, the front surface of the movable fume collecting hood is provided with a second fume inlet, the movable fume collecting hood is arranged in the channel, the inner cavity of the fume collecting hood is provided with a second lifting mechanism, the second lifting mechanism is connected with the movable fume collecting hood, and the second lifting mechanism drives the movable fume collecting hood to move up and down along the channel to shield or expose the second fume inlet. The fume collecting hood can move up and down relative to the air cabinet under the drive of the first lifting mechanism, the distance between the fume collecting hood and the cooking range is adjusted, the adjustment of the fume sucking area is realized, the volume of the fume extractor is adjusted, the kitchen space occupied by the fume extractor is reduced, the user can operate the fume extractor more flexibly in a kitchen, and the practicability of the fume extractor is improved. On this basis, the movable fume collecting hood arranged in the passage of the fume collecting hood can be driven by the second lifting mechanism to extend out of the fume collecting hood, when the fume amount is large, the movable fume collecting hood extends out of the fume collecting hood to lower the fume sucking area, and the fume can enter the fume collecting hood along the second fume inlet of the movable fume collecting hood, so that the fume sucking effect of the fume exhauster is improved.

However, the range hood has a certain disadvantage that the air cabinet and the fume collecting hood and the movable fume collecting hood can move relatively, so that a movement gap is inevitably formed at the contact position of the air cabinet and the fume collecting hood, and in the operation process of the range hood, under the negative pressure of a fan system, air leaks at the movement gap, so that the effective air volume of the range hood is influenced, the noise problem is also generated to a certain extent, and the use experience of a user is influenced.

Disclosure of Invention

The utility model aims to solve the technical problem of the prior art, and provides a range hood capable of avoiding the problems of effective air volume reduction and noise generation caused by movement gaps in the telescopic adjustment process of the range hood.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a range hood, includes organism and fan system, the organism includes that the interior overcoat is established in order can the relative movement mode first casing and the second casing that links together, the inner chamber of first casing with the inner chamber phase fluid intercommunication of second casing:

a movement gap allowing the first shell and the second shell to move relatively is reserved between the first shell and the second shell, and a sealing assembly in sealing contact with the first shell and the second shell is arranged at the movement gap.

In order to improve the sealing effect, the sealing assembly is arranged on one of the first shell and the second shell and moves along with the first shell or the second shell relative to the other.

In order to realize lifting and stretching of a machine body of the range hood and improve the range hood effect, the first shell and the second shell are connected in a mode of being capable of vertically and relatively moving.

Generally, the first casing and the second casing may be directly connected, and the first casing and the second casing may be connected in a similar manner to that of the air duct or the intermediate transition casing, but in order to simplify the structure of the body of the range hood and achieve the purpose of telescopic lifting, the bottom of the first casing has a first opening, the top of the second casing has a second opening opposite to the first opening, the first casing extends into the second casing through the second opening at the top of the second casing, and the sealing assembly is disposed between the portion of the first casing extending into the second casing and the corresponding portion of the second casing.

In order to ensure a sealing effect and to increase the travel of the relative movement between the first and second housings as much as possible, the sealing assembly is arranged adjacent to the first open position of the first housing and extends in the circumferential direction of the first opening of the first housing.

In order to achieve a secure mounting of the seal assembly, the seal assembly comprises a seal and a connection for securing the seal to the first housing or the second housing.

In order to reduce the friction force of the relative movement between the first shell and the second shell as much as possible on the basis of ensuring the sealing effect, the sealing element is integrally strip-shaped and comprises a sealing strip main body and sealing flanges extending from two opposite side edges in the width direction of the sealing strip main body towards the same side part of the sealing strip main body, and the connecting element acts on the sealing strip main body and presses the sealing strip main body against the first shell or the second shell. In general, the sealing part can achieve the sealing purpose by only adopting one sealing flanging, and the sealing effect can be further improved by adopting the double-layer sealing flanging structure. Of course, it is conceivable that three or more sealing flanges may be provided on the sealing strip body to achieve a reliable sealing.

In order to avoid the problem of sealing failure caused by extrusion deformation or long-time use of the sealing element, the whole connecting element is in a strip shape and is arranged between two sealing flanges of the sealing element, the main body of the connecting element is propped against the sealing strip main body, and two side edges of the connecting element in the width direction are also provided with supporting flanges which are respectively propped against the inner sides of the two sealing flanges of the sealing element.

In order to ensure that the sealing flange has a certain deformation in the sliding contact process with the second shell or the first shell so as to ensure the sealing effect, the height of the supporting flange of the connecting piece is smaller than that of the sealing flange of the sealing piece.

As an improvement, the main body of the connecting piece presses the sealing piece against the first shell, and the two sealing flanges of the sealing piece are in sealing contact with the wall of the second shell. It is conceivable that the body of the connecting piece presses the sealing piece against the second housing, the two sealing collars of the sealing piece being in sealing contact with the wall of the first housing.

The fan system can be arranged in the machine body, can also be arranged outside the machine body (such as a kitchen suspended ceiling), and is improved in that the fan system is arranged in the inner cavity of the first shell. In general, the first housing may be fixed as a fan frame on a wall of a kitchen, and the fan system is fixed with respect to the first housing, so that the weight of the second housing is reduced, and the lifting process of the second housing is more stable and operable.

As an improvement, the machine body further comprises an air inlet cavity which is connected to the first shell in a lifting manner relative to the second shell, the air inlet cavity is communicated with the second shell, and an air inlet for external flue gas to enter is formed in the air inlet cavity. By the structural design, the air inlets of the air inlet cavities are more downward penetrating, and the oil smoke absorbing effect is greatly improved.

As an improvement, the bottom of the second shell is provided with a third opening for the air inlet cavity to enter and exit the second shell in the up-down direction.

In order to enable the whole wall-mounted arrangement of the range hood, the mounting stability is improved, the third opening is formed in the rear side of the bottom of the second shell, and the rear side wall of the air inlet cavity and the rear side wall of the first shell are both close to the rear side wall of the second shell.

In order to reduce the problem of oil smoke escape, the size of at least the bottom area of the second shell in the front-rear direction is larger than that of the air inlet cavity in the front-rear direction, so that the part of the bottom of the second shell, which is positioned at the front part of the air inlet cavity, forms a smoke blocking part for collecting smoke.

In general, the air inlet may be disposed on the bottom wall of the air inlet cavity or on the bottom wall or the front side wall of the air inlet cavity at the same time, but for smooth fume exhaust, the front side wall of the air inlet cavity is provided with an air inlet, and the air inlet cavity has a closed state of moving upwards into the second housing to close the air inlet and an open state of moving downwards to expose out of the second housing to open at least a partial area of the air inlet.

In order to ensure the overall aesthetic property of the range hood in the contracted state, the bottom wall of the air inlet cavity is basically flush with the bottom wall of the second shell when the air inlet cavity is in the closed state. Above-mentioned structural design also makes second casing and air inlet cavity can rise in place simultaneously when rising, reaches the assigned position, reaches and beats the effect of inlaying with the cupboard, and when falling, relies on the big stroke of two-stage drive to make the air intake of air inlet cavity visit more down, promotes the oil smoke effect.

Compared with the prior art, the utility model has the advantages that: the sealing assembly arranged between the first shell and the second shell, which are used for telescopic adjustment and movement of the range hood, fills the movement gap between the two parts, realizes the sealing in the relative movement process of the two parts, thereby avoiding the leakage of air flow at the movement gap to influence the effective air quantity of the range hood, avoiding the noise problem caused by the flowing of the air flow at the position to a certain extent and improving the use experience of users.

Drawings

Fig. 1 is a schematic perspective view of a range hood according to an embodiment of the present utility model (in a retracted state);

fig. 2 is a schematic view illustrating a perspective view of a range hood according to another embodiment of the present utility model;

fig. 3 is a vertical sectional view of the range hood according to the embodiment of the present utility model, taken along the front-rear direction;

fig. 4 is a schematic perspective view of a range hood according to an embodiment of the present utility model (in an extended state);

fig. 5 is a left side view of the range hood of fig. 4;

fig. 6 is a vertical sectional view of the range hood shown in fig. 4 taken in a front-rear direction;

fig. 7 is a schematic perspective view of a range hood according to an embodiment of the present utility model, in which parts such as a second housing and an air intake cavity are omitted;

FIG. 8 is an exploded view of the seal assembly of FIG. 7;

FIG. 9 is an enlarged view of FIG. 3 at A;

fig. 10 is an enlarged view at B in fig. 6.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present utility model, but these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the utility model may be arranged in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting, such as "upper" and "lower" are not necessarily limited to being in a direction opposite or coincident with the direction of gravity.

A preferred embodiment of the range hood of the present embodiment is shown in fig. 1-10, and includes a housing, a blower system 40 disposed within the housing, a lifting device 20, and a sealing assembly 30.

Referring to fig. 1 and 4, the machine body includes a first housing 11, a second housing 12, and an air intake chamber 13. The inner cavity of the first shell 11, the inner cavity of the second shell 12 and the inner cavity of the air inlet cavity 13 are communicated. The first shell 11, the second shell 12 and the air inlet cavity 13 realize relative lifting movement through the lifting device 20, so that the air inlet cavity 13 can be ensured to be detected down to a position closer to a smoke source, and the smoke absorbing effect is improved. The first housing 11 is fixed relative to the wall surface, and the fan system 40 is arranged in the first housing 11 and is used for providing negative pressure for exhausting oil smoke. The first shell 11 and the second shell 12 are sleeved with each other in an up-down relative mode, and the air inlet cavity 13 and the second shell 12 are sleeved with each other in an up-down relative mode. The left-right dimension of the first housing 11 is smaller than the left-right dimension of the second housing 12, and the front-rear dimension of the first housing 11 substantially coincides with the front-rear dimension of the second housing 12 (specifically, the front-rear dimension of the first housing 11 is slightly smaller than the front-rear dimension of the second housing 12). The left-right dimension of the air intake cavity 13 is substantially identical to the left-right dimension of the second housing 12 (specifically, the left-right dimension of the air intake cavity 13 is slightly smaller than the left-right dimension of the second housing 12), and the front-rear dimension of the air intake cavity 13 is smaller than the front-rear dimension of the second housing 12, which is substantially about one third of the front-rear dimension of the second housing 12. More specifically, the bottom of the first housing 11 has a first opening 111, the top of the second housing 12 has a second opening 121, and the bottom rear side of the second housing 12 has a third opening 122. The first opening 111 of the first housing 11 is opposite to the second opening of the second housing 12 in the up-down direction. The first housing 11 can extend downwardly into the second housing 12 through the second opening 121 into and out of the second housing 12, wherein the second opening 121 of the second housing 12 is shaped and sized to substantially conform to the cross-sectional shape and size (cross-section in the horizontal direction) of the first housing 11. The air intake cavity 13 can extend into the second housing 12 through a third opening 122 at the bottom of the second housing 12 in the up-down direction, wherein the shape and size of the third opening 122 are substantially identical to the shape and size of the cross section (cross section in the horizontal direction) of the air intake cavity 13. Since the third opening 122 is provided at the bottom rear side of the second housing 12, the air intake chamber 13 is also provided at a rear side with respect to the second housing 12, and thus, a portion of the bottom area of the second housing 12 located at the air intake chamber 13 forms a smoke blocking portion 123 for collecting smoke. An air inlet 131 for external flue gas to enter is formed in the front side wall of the air inlet cavity 13, and specifically, the air inlet 131 extends in the left-right direction. The bottom of the air inlet cavity 13 is provided with an oil cup 132 extending leftwards and rightwards for containing the oil flowing down on the air inlet cavity 13.

As shown in fig. 6, in order to better attach to the wall and to ensure the overall fixing stability of the range hood, the rear side wall of the air intake cavity 13 and the rear side wall of the first housing 11 are both disposed close to the rear side wall of the second housing 12, that is, the rear side wall of the air intake cavity 13, the rear side wall of the first housing 11 and the rear side wall of the second housing 12 are substantially located in the same vertical extending direction.

Referring to fig. 1 and 4, when the range hood is folded (typically, when the range hood is turned off), the air inlet cavity 13 moves from bottom to top, enters the inner cavity of the second casing 12 through the third opening 122 at the bottom of the second casing 12, and after moving in place, the air inlet 131 on the air inlet cavity 13 is covered by the second casing 12 to be closed, and the bottom of the air inlet cavity 13 (i.e., the bottom wall of the oil cup 132) is substantially flush with the bottom wall of the second casing 12. Similarly, during the upward movement of the second housing 12 relative to the first housing 11, the first housing 11 enters the inner cavity of the second housing 12 from the second opening 121 at the top of the second housing 12, and after the movement is in place, most (lower part) of the first housing 11 is accommodated in the second housing 12, and the upper part is exposed relative to the second housing 12, so that the fixing frame is hung on the wall surface. After the second shell 12 and the air inlet cavity 13 rise in place at the same time and reach the designated position, the effect of being embedded with the bottom surface of the cabinet can be achieved, namely, the whole cabinet can be hidden in the cabinet, and the whole aesthetic property is improved. When the range hood is unfolded, the second housing 12 and the air inlet cavity 13 arranged on the second housing 12 move downwards relative to the first housing 11, and simultaneously, the air inlet cavity 13 moves downwards relative to the second housing 12, exposing the bottom of the second housing 12 and exposing the air inlet 131. After the second housing 12 and the air inlet cavity 13 move in place, the height position of the second housing 12 is lower than that of the first housing 11, and the height position of the air inlet cavity 13 is lower than that of the second housing 12. The range hood can effectively improve the oil fume suction effect because the range hood depends on the large stroke of two-stage driving to enable the air inlet 131 of the air inlet cavity 13 to go down more.

As shown in fig. 3 and 6, in order to achieve lifting of the second housing 12 relative to the first housing 11 and lifting of the air intake cavity 13 relative to the second housing 12, the lifting device 20 of this embodiment may be implemented by two independent lifting mechanisms (such as electric push rods), or may be implemented by a lifting mechanism with two-stage telescopic function in the prior art, where the lifting mechanism generally has two power output ends, one power output end 22 may be connected to the second housing 12 to drive the second housing 12 to lift relative to the first housing 11, and the other power output end 23 may be connected to the air intake cavity 13 to drive the air intake cavity 13 to lift relative to the second housing 12.

Referring to fig. 7 to 10, the seal assembly 30 of the present embodiment is disposed in a movement gap a reserved between the first housing 11 and the second housing 12, specifically, the seal assembly 30 is disposed between a portion of the first housing 11 extending into the second housing 12 and a corresponding portion of the second housing 12. The seal assembly 30 is disposed adjacent to the first opening 111 of the first housing 11 and is disposed along the circumferential extension of the first opening 111 of the first housing 11. As the cross section of the first housing 11 in the present embodiment is substantially square, the seal assembly 30 may be provided with four segments in sequence in the circumferential direction, and sealing is achieved in the horizontal direction on the four side walls of the first housing 11, respectively.

The seal assembly 30 of the present embodiment is disposed on the first housing 11 and can move the first housing 11 relative to the second housing 12. The seal assembly 30 includes a seal 31 and a connector 32 for securing the seal 31 to the first housing 11. The sealing member 31 is integrally strip-shaped and comprises a sealing strip main body 311 and sealing flanges 312 extending from two opposite sides of the sealing strip main body 311 in the width direction towards the second housing 12, wherein the extending directions of the two sealing flanges 312 are basically perpendicular to the extending direction of the sealing strip main body 311, and the sealing flanges 312 and the sealing strip main body 311 are integrally formed and designed, so that flexible rubber members can be adopted.

The connector 32 is generally an elongated plate structure having an extension substantially identical to the extension of the seal. Specifically, the connecting member 32 is disposed between the two sealing flanges 312 of the sealing member and can be connected to the wall of the first housing 11 by screws, wherein the overall dimension of the body of the connecting member 32 is substantially identical to the overall dimension of the sealing strip body 311, so that the sealing strip body 311 can be pressed against the first housing 11, and effective sealing of the sealing member 31 and the first housing 11 can be achieved. During the movement of the sealing element 31 with the first housing 11, the two sealing flanges 312 of the sealing element 31 are in sealing contact with the inner wall of the second housing 12, so that a seal between the sealing element 31 and the second housing 12 is achieved.

The two side edges of the connecting piece 32 in the width direction of the present embodiment are further provided with support flanges 321 extending toward the second housing 12, and the two support flanges 321 are respectively used to abut against the inner sides of the two sealing flanges 312 of the sealing piece. The height of the supporting flange 321 of the connecting piece 32 is smaller than the height of the sealing flange 312 of the sealing piece 31, specifically, the height dimension of the supporting flange 321 of the connecting piece 32 is about half of the height dimension of the sealing flange 312 of the sealing piece 31, so that the problem of sealing failure caused by extrusion deformation or long-time use of the sealing piece 31 can be avoided, and a certain deformation amount can be provided in the sliding contact process of the sealing flange 312 and the second shell 12, so that the sealing effect is ensured.

The sealing assembly 30 arranged between the first casing 11 and the second casing 12, which are telescopically adjusted and moved in the range hood of the embodiment, fills the movement gap a between the two parts, realizes the sealing in the relative movement process of the two parts, thereby avoiding the influence of the leakage of air flow at the movement gap a on the effective air volume of the range hood, avoiding the problem of noise caused by the flowing of the air flow at the position to a certain extent, and improving the use experience of users.

The term "fluid communication" as used herein refers to a spatial positional relationship between two components or parts (hereinafter collectively referred to as a first part and a second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow along a flow path from the first part to the second part or/and be transported to the second part, or the first part and the second part may be directly communicated with each other, or the first part and the second part may be indirectly communicated with each other through at least one third party, and the third party may be a fluid channel such as a pipe, a channel, a conduit, a flow guiding member, a hole, a groove, or the like, or a chamber allowing the fluid to flow through, or a combination thereof.

Claims (17)

1. A range hood comprising a housing and a fan system (40), the housing comprising a first housing (11) and a second housing (12) which are coupled together in a relatively movable manner, the interior cavity of the first housing (11) being in fluid communication with the interior cavity of the second housing (12):

the method is characterized in that: a movement gap (a) allowing relative movement of the first shell (11) and the second shell (12) is reserved between the first shell (11) and the second shell (12), and a sealing assembly (30) in sealing contact with both the first shell (11) and the second shell (12) is arranged at the movement gap (a).

2. The range hood of claim 1, wherein: the sealing assembly (30) is arranged on one of the first shell (11) and the second shell (12) and moves along with the first shell (11) or the second shell (12) relative to the other.

3. The range hood of claim 1, wherein: the first housing (11) and the second housing (12) are connected together in a vertically relatively movable manner.

4. A range hood according to claim 3, wherein: the bottom of the first shell (11) is provided with a first opening (111), the top of the second shell (12) is provided with a second opening (121) opposite to the first opening (111), the first shell (11) stretches into the second shell (12) through the second opening (121) at the top of the second shell (12), and the sealing assembly (30) is arranged between the part of the first shell (11) stretching into the second shell (12) and the corresponding part of the second shell (12).

5. The range hood of claim 4, wherein: the seal assembly (30) is disposed adjacent to the first opening (111) of the first housing (11) and extends in a circumferential direction of the first opening (111) of the first housing (11).

6. The range hood of claim 2, wherein: the seal assembly (30) comprises a seal (31) and a connection (32) for fixing the seal (31) to the first housing (11) or the second housing (12).

7. The range hood of claim 6, wherein: the sealing piece (31) is integrally strip-shaped and comprises a sealing strip main body (311) and sealing flanges (312) extending from two opposite side edges of the sealing strip main body (311) in the width direction towards the same side part of the sealing strip main body (311), and the connecting piece (32) acts on the sealing strip main body (311) and presses the sealing strip main body (311) against the first shell (11) or the second shell (12).

8. The range hood of claim 7, wherein: the connecting piece (32) is integrally strip-shaped and is arranged between two sealing flanges (312) of the sealing piece, the main body of the connecting piece (32) is propped against the sealing strip main body (311), and two side edges of the connecting piece (32) in the width direction are also provided with supporting flanges (321) which are respectively propped against the inner sides of the two sealing flanges (312) of the sealing piece.

9. The range hood of claim 8, wherein: the height of the supporting flange (321) of the connecting piece (32) is smaller than the height of the sealing flange (312) of the sealing piece (31).

10. The range hood of claim 8, wherein: the main body of the connecting piece (32) presses the sealing piece (31) against the first shell (11), and two sealing flanges (312) of the sealing piece (31) are in sealing contact with the wall of the second shell (12).

11. The range hood according to any one of claims 1 to 10, wherein: the fan system (40) is arranged in the inner cavity of the first shell (11).

12. The range hood according to any one of claims 1 to 10, wherein: the machine body further comprises an air inlet cavity (13) which is connected to the first shell (11) in a lifting mode relative to the second shell (12), the air inlet cavity (13) is communicated with the second shell (12), and an air inlet (131) for external flue gas to enter is formed in the air inlet cavity (13).

13. The range hood of claim 12, wherein: the bottom of the second shell (12) is provided with a third opening (122) for the air inlet cavity (13) to enter and exit the second shell (12) in the up-down direction.

14. The range hood of claim 13, wherein: the third opening (122) is formed in the rear side of the bottom of the second shell (12), and the rear side wall of the air inlet cavity (13) and the rear side wall of the first shell (11) are both close to the rear side wall of the second shell (12).

15. The range hood of claim 13, wherein: at least the bottom area of the second housing (12) has a size in the front-rear direction that is larger than the size of the air intake cavity (13) in the front-rear direction, so that the portion of the bottom of the second housing (12) located in front of the air intake cavity (13) forms a smoke blocking portion (123) for collecting smoke.

16. The range hood of claim 13, wherein: the front side wall of the air inlet cavity (13) is provided with the air inlet (131), and the air inlet cavity (13) is provided with a closing state of moving upwards into the second shell (12) to close the air inlet (131) and an opening state of moving downwards to expose out of the second shell (12) to open at least part of the area of the air inlet (131).

17. The range hood of claim 16, wherein: when the air inlet cavity (13) is in a closed state, the bottom wall of the air inlet cavity (13) is flush with the bottom wall of the second shell (12).