CN219550616U - Fume exhauster - Google Patents

Abstract

The utility model relates to a range hood, which comprises a case, wherein the case is provided with a containing cavity, the lower end of the case is provided with a lampblack suction inlet communicated with the containing cavity, and the lampblack suction inlet is provided with a filter screen; the flow guide piece is movably arranged in the accommodating cavity; and the deflector has a first position and a second position, and when the deflector is in the first position, the fume intake is at least partially blocked to prevent airflow from flowing back to the screen. According to the embodiment of the utility model, the flow guide piece can move to a specific position, so that the backward air flow is prevented from continuously blowing into the filter screen downwards, and oil drops on the filter screen are prevented from being blown to a position outside the oil cup.

Description

Fume exhauster

Technical Field

The utility model relates to the field of range hoods, in particular to a range hood.

Background

A common flue is arranged in a modern community or a building, a certain amount of oil smoke is generated in a kitchen in a household in each floor, and the generated oil smoke is generally discharged into the common flue through a range hood. In order to prevent the back flow of the oil smoke in the public flue, a smoke preventing device is usually arranged between the range hood of each kitchen and the public flue. When the range hood works, the valve plate in the smoke prevention device is opened, the discharged oil smoke enters the common flue through the smoke outlet, and when the range hood does not work, the valve plate covers the smoke outlet under the action of dead weight, so that the purpose of preventing the smoke from flowing back is achieved.

However, in the long-term use process of the range hood, the situation that the smoke prevention device is stuck by oil drops, especially when the range hood just begins to work, the smoke prevention device is opened and is not smooth, so that air flow blows downwards to the smoke suction inlet is caused, and thus the oil drops collected on the filter screen can drop to the area outside the oil cup.

Thus, preventing the backflow of air flow toward the filter screen when the smoke barrier is not open is a major concern.

Disclosure of Invention

In view of the above, it is an object of embodiments of the present utility model to provide an improved range hood that overcomes at least one of the above-mentioned disadvantages and/or other possible disadvantages not mentioned herein.

The embodiment of the utility model provides a range hood, which comprises: the machine case is provided with a containing cavity, the lower end of the machine case is provided with a lampblack suction inlet communicated with the containing cavity, and the lampblack suction inlet is provided with a filter screen; the flow guide piece is movably arranged in the accommodating cavity; and the deflector has a first position and a second position, and when the deflector is in the first position, the fume intake is at least partially blocked to prevent airflow from flowing back to the screen. Therefore, the flow guide piece can move to a specific position to prevent the air flow from continuously blowing downwards into the filter screen so as to prevent oil drops on the filter screen from being blown to a position outside the oil cup.

According to an alternative embodiment, it comprises: the fan assembly is arranged in the accommodating cavity and comprises an air inlet, an air outlet and a volute; an air inlet channel formed by enclosing the fan assembly and the machine box is formed at one side of an air inlet of the fan assembly, and the air outlet is positioned at the upper end of the volute; the flow guiding piece is positioned at one side of the fan assembly away from the air outlet. When the oil smoke flows back, the flow guide piece is arranged at the position from the side opposite to the air outlet of the fan assembly, and the flow guide effect is optimal.

According to an alternative embodiment, the deflector is rotatably connected to the housing. The deflector thus switches between the first position and the second position by rotating.

According to an alternative embodiment, the deflector comprises a deflector and a fixed support; the fixed support is fixedly arranged on the chassis; the guide plate is rotatably connected with the chassis through the fixing support. Therefore, the stability of the connecting structure is further improved through the fixing support.

According to an alternative embodiment, the baffle comprises a first edge rotatably connected to the chassis; and a second edge opposite the first edge; when the guide piece is in the first position, the second edge is positioned in the air inlet channel so that the air inlet channel is at least partially blocked by the guide plate; when the flow guide piece is positioned at the second position, the second edge is positioned above the first edge and is abutted against the chassis.

According to an alternative embodiment, the first edge is provided with a limiting structure, and when the flow guiding piece is in the first position, the limiting structure abuts against the fixing support. Therefore, the guide piece is relatively stably positioned at the first position through the limiting structure.

According to an alternative embodiment, the second edge is higher than the first edge when the deflector is in the first position; and the included angle between the plane of the guide plate and the plane of the case is 75-80 degrees. Therefore, the large rotation amplitude of the guide plate is ensured to block enough air flow, and the blocked air flow can be guided to flow to the side of the case, so that the guide effect is further improved.

According to an alternative embodiment, the baffle is arranged to be adapted to direct grease on the baffle to an oil circuit of the range hood. Therefore, grease carried in the blocked airflow can not accumulate on the guide plate, and the cleanliness of the guide plate is effectively maintained.

According to an alternative embodiment, the deflector is made of a lightweight material, so that the deflector is kept in the second position by the upward air flow during normal operation of the range hood. Therefore, the guide plate does not fall to the first position under the condition that the smoke prevention device is normally opened, and the normal air inlet quantity of the range hood is not influenced.

According to an alternative embodiment, it comprises: the electronic control device is used for controlling the flow guide piece to be in a first position when the electronic control device monitors that the smoke prevention device is not normally opened. Therefore, the reaction and control of the range hood on the air flow backflow are more accurate and rapid.

Drawings

The principles, features and advantages of the present utility model may be better understood by describing the present utility model in more detail with reference to the drawings. The drawings include:

fig. 1 illustrates a schematic view of the interior of a cabinet of a range hood according to an exemplary embodiment of the present utility model;

fig. 2 illustrates a perspective view of a range hood according to an exemplary embodiment of the present utility model;

fig. 3 illustrates a schematic view of the inside of a cabinet of a range hood according to still another exemplary embodiment of the present utility model;

FIG. 4 illustrates an exploded view of a baffle according to an exemplary embodiment of the present utility model;

FIG. 5 illustrates a perspective view of a baffle in a first position according to an exemplary embodiment of the present utility model;

fig. 6 shows a perspective view of a baffle in a second position according to an exemplary embodiment of the present utility model.

Reference numerals:

1000: a range hood; 900: a chassis; 910: a receiving chamber; 920: a fume suction inlet; 800: a filter screen; 700: a flow guide; 710: a deflector; 711: a first edge; 712: a second edge; 720: a fixed bracket; 730: an annular connecting part; 740: a connecting shaft; 750: a limit structure; 600: a fan assembly; 610: an air inlet; 620: an air outlet; 630: a volute; 500: an oil cup.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "longitudinal", "transverse", "high", "front", "back", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the expression "a and/or B" denotes all possible combinations of a and B, such as a alone, B alone or a and B. The expression "at least one a or B" or "at least one of a and B" has a meaning similar to "a and/or B" and may include a alone, B alone or a and B. The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings.

Referring to fig. 1 and 2, in the conventional range hood 1000, an oil cup 500 is generally disposed at a position below a filter screen 800, and grease on the filter screen 800 flows into the oil cup 500 along a mesh or a specific oil path. However, if the screen 800 is blown by the air flow from top to bottom, the attached grease is likely to fall down directly, and drop on the kitchen range or the cooker to cause dirt.

Fig. 1 is a schematic view of the interior of a chassis 900 with a baffle 700 in a first position according to an exemplary embodiment of the present utility model. As shown in fig. 1, a range hood 1000 according to an exemplary embodiment of the present utility model includes a cabinet 900 having a receiving chamber 910, a fume suction port 920 communicating with the receiving chamber 910 is provided at a lower end of the cabinet 900, and the fume suction port 920 is provided with a filter screen 800; the flow guiding piece 700 is movably arranged in the accommodating cavity 910; and the deflector 700 has a first position and a second position, and when the deflector 700 is in the first position, the oil smoke intake 920 is at least partially blocked to prevent air flow back to the screen 800. Specifically, when the smoke protection device (not shown) is not timely opened, the air flow originally discharged outwards starts to flow back after encountering the blockage, and at this time, the flow guide 700 arranged in the accommodating cavity 910 is positioned at the first position above the oil smoke suction inlet 920, which is just a necessary path for the air flow to flow back, so that the air flow can be effectively prevented from continuously blowing downwards to the filter screen 800, and oil drops on the filter screen 800 are prevented from being blown to positions outside the oil cup 500. The specific location and configuration of the baffle 700 should be understood in connection with the embodiments to be described next.

According to an exemplary embodiment of the present utility model, as also shown in fig. 1, a fan assembly 600 is disposed within a housing cavity 910, including an air inlet 610, an air outlet 620, and a volute 630; an air inlet channel formed by enclosing the fan assembly 600 and the chassis 900 is formed at one side of the air inlet 610 of the fan assembly 600, and the air outlet 620 is positioned at the upper end of the volute 630; the deflector 700 is located on a side of the fan assembly 600 remote from the air outlet 620. Specifically, the scroll casing 630 is hollow to form an air flow passage, and the impeller of the fan assembly 600 is accommodated in the scroll casing 630; the scroll case 630 is formed with an air outlet 610 in front and an air outlet 620 in the upper side.

When the airflow flows backward, the airflow tends to flow downward from the air outlet 620 to the fan assembly 600, then flows back to the air inlet channel 911 through the air inlet 610, and finally blows downward to the filter screen 800; since the fan assembly 600 is still in operation during this process, most of the backward flow is carried by the impeller to the side far from the air outlet 620 when entering the impeller (not shown) of the fan assembly 600, so there is more backward flow in the accommodating cavity 910 at the side far from the air outlet 620; therefore, the flow guiding member 700 is arranged in the accommodating cavity 910 and is positioned at one side of the accommodating cavity 910 away from the air outlet 620, so that the flow guiding effect is optimal; taking fig. 1 as an example, the air outlet 620 of the fan assembly 600 is located at a position above the accommodating cavity 910 to the left, and the flow guiding member 700 is located at a position below the accommodating cavity 910 to the right, so that the air flow in the backward direction can be blocked to the greatest extent.

Fig. 3 is a schematic view of the interior of a chassis 900 with a baffle 700 in a second position according to an exemplary embodiment of the present utility model. According to an exemplary embodiment of the present utility model, as also shown in fig. 1 and 3, a baffle 700 is rotatably coupled to a cabinet 900. Specifically, the deflector 700 is fixed to the chassis 900 and rotatably switches between a first position and a second position. Alternatively, the flow guiding member 700 may be disposed outside the volute 630, so long as the flow guiding member is capable of blocking the air flow flowing back when in the first position, without being limited thereto.

According to an exemplary embodiment of the present utility model, as also shown in fig. 4, 5 and 6, the deflector 700 includes a deflector 710 and a fixing bracket 720; the fixed bracket 720 is fixedly arranged on the chassis 900; the baffle 710 is rotatably coupled to the cabinet 900 by a fixing bracket 720. Specifically, the fixing bracket 720 is fixed to the chassis 900 by a connection manner such as a screw; the baffle 710 and the fixing bracket 720 are respectively provided with an annular connecting part 730, the annular connecting parts 730 of the baffle 710 and the fixing bracket are aligned, and the baffle 710 can be rotatably connected with the chassis 900 by inserting the connecting shaft 740. The connecting mode is simple in required parts and can be quickly assembled or disassembled.

According to an exemplary embodiment of the present utility model, as also shown in fig. 1, 3 and 4, baffle 710 includes a first edge 711 rotatably coupled to chassis 900; and a second edge 712 opposite the first edge 711; when the baffle 700 is in the first position, the second edge 712 is positioned within the air intake channel such that the air intake channel is at least partially blocked by the baffle 710; when the flow guide 700 is at the second position, the second edge 712 is located above the first edge 711 and abuts against the chassis 900. Specifically, as shown in fig. 1, when the deflector 700 is in the first position, the second edge 712 rotates into the air inlet channel and is located between the fan assembly 600 and the filter screen 800 in the height direction, and when the air flow of the backflow flows out from the air inlet 610 of the fan assembly 600, the deflector 710 just blocks the air flow from continuing to flow downwards, so that the air flow cannot blow to the filter screen 800; as shown in fig. 3, when the smoke preventing device is working normally without flowing backward, the flow guiding member 700 is at the second position, and the flow guiding plate 710 is attached to the chassis 900 upwards, so that the smoke suction inlet 920 is not blocked, which is beneficial to the normal working of the smoke exhaust ventilator 1000.

According to an exemplary embodiment of the present utility model, as also shown in fig. 4 and 5, the first edge 711 is provided with a limiting structure 750, and when the deflector 700 is in the first position, the limiting structure 750 abuts against the fixing bracket 720. Specifically, the limiting structure 750 is located on a side of the baffle 710 near the filter screen 800, and the limiting structure 750 may be an extension or a protrusion on the first edge 711, and when the baffle 710 rotates to a certain angle, the limiting structure 750 abuts against the chassis 900, so that the baffle 710 is stably maintained in the first position.

According to an exemplary embodiment of the present utility model, also shown in fig. 1 and 5, when the baffle 700 is in the first position, the second edge 712 is higher than the edge 711; and the angle between the plane of baffle 710 and the plane of cabinet 900 is 75-80. Since the chassis 900 has several vertical walls, it should be noted that, the plane of the chassis 900 refers to the plane of the wall connected to the baffle 710. The included angle is designed to be within a large acute angle range of 75-80 degrees, on the one hand, because the closer the included angle is to vertical, the larger the extending amplitude of the baffle 710 relative to the chassis 900, which is beneficial to blocking more back flow air flow; on the other hand, the blocked air flow gathers toward the first edge 711 and is not likely to escape.

According to an exemplary embodiment of the present utility model, the baffle 710 is arranged to be adapted to guide grease on the baffle 710 to an oil path of the range hood 1000. Specifically, an oil guide system (not shown) of the range hood 1000 includes an oil path and an oil cup that are communicated with each other; when the oil passage is located below the rear wall surface of the cabinet 900, the baffle 710 is configured to be inclined toward the oil passage, and to take a form in which the front side is high and the rear side is low in the depth direction of the range hood 1000, so that grease accumulated on the baffle 710 flows backward into the oil passage.

According to an exemplary embodiment of the present utility model, as also shown in fig. 3 and 6, the baffle 710 is made of a lightweight material such that the baffle 710 is maintained in the second position by the upward air flow during normal operation of the range hood 1000. Specifically, when the range hood 1000 works normally, that is, the smoke prevention device is normally opened, the whole smoke suction inlet has ascending airflow, the guide plate 710 can be made of light materials such as synthetic plastics, and under the action of the ascending airflow, the guide plate 710 is retracted upwards and attached to the chassis 900, so that the air intake of the range hood 1000 is not affected.

According to an exemplary embodiment of the present utility model, there is provided: an electronic control device (not shown) and a smoke barrier, when the electronic control device monitors that the smoke barrier is not normally open, the flow guide 700 is controlled to be in the first position. Further, when the electronic control device monitors that the smoke control device has been opened to discharge smoke normally, the flow guide 700 is controlled to be recycled to the second position in real time, so as to ensure the maximum suction effect of the range hood 1000. The electronic control device is set, so that the whole system is controlled more accurately and rapidly.

Although specific embodiments have been described above, these embodiments are not intended to limit the scope of the disclosure, even where only a single embodiment is described with respect to a particular feature. The characteristic examples provided in the present disclosure are intended to be illustrative, not limiting, unless a different expression is explicitly made. In a specific implementation, the features may be combined with one another where technically feasible according to the actual requirements. Various substitutions, alterations, and modifications can be made without departing from the spirit and scope of the utility model.

Claims (10)

1. A range hood is characterized in that,

comprising the following steps:

the machine case is provided with a containing cavity, the lower end of the machine case is provided with a lampblack suction inlet communicated with the containing cavity, and the lampblack suction inlet is provided with a filter screen;

the flow guide piece is movably arranged in the accommodating cavity; and is also provided with

The deflector has a first position and a second position, and when the deflector is in the first position, the fume intake is at least partially blocked to prevent airflow from flowing back to the screen.

2. The range hood of claim 1, wherein the range hood further comprises a hood body,

comprising the following steps:

the fan assembly is arranged in the accommodating cavity and comprises an air inlet, an air outlet and a volute;

an air inlet channel formed by enclosing the fan assembly and the machine box is formed at one side of an air inlet of the fan assembly, and the air outlet is positioned at the upper end of the volute;

the flow guiding piece is positioned at one side of the fan assembly away from the air outlet.

3. The range hood according to claim 2, wherein,

the guide piece is rotatably connected with the chassis.

4. The range hood according to claim 3, wherein,

the guide piece comprises a guide plate and a fixed bracket;

the fixed support is fixedly arranged on the chassis;

the guide plate is rotatably connected with the chassis through the fixing support.

5. The range hood of claim 4, wherein the cooking fume remover comprises a plurality of cooking fume remover units,

the deflector comprises a first edge rotatably connected with the chassis; and

a second edge opposite the first edge;

when the guide piece is in the first position, the second edge is positioned in the air inlet channel so that the air inlet channel is at least partially blocked by the guide plate;

when the flow guide piece is positioned at the second position, the second edge is positioned above the first edge and is abutted against the chassis.

6. The range hood of claim 5, wherein the range hood further comprises a hood body,

the first edge is provided with a limiting structure, and when the flow guide piece is positioned at the first position, the limiting structure props against the fixed support.

7. The range hood of claim 5, wherein the range hood further comprises a hood body,

when the flow guiding piece is in the first position, the second edge is higher than the first edge; and is also provided with

The included angle between the plane of the guide plate and the plane of the case is 75-80 degrees.

8. The range hood of claim 4, wherein the cooking fume remover comprises a plurality of cooking fume remover units,

the baffle is arranged to be suitable for guiding grease on the baffle to an oil path of the range hood.

9. The range hood of claim 4, wherein the cooking fume remover comprises a plurality of cooking fume remover units,

the guide plate is made of light materials, so that the guide plate is kept at a second position under the action of ascending air flow when the range hood works normally.

10. The range hood of claim 1, wherein the range hood further comprises a hood body,

comprising the following steps:

the electronic control device is used for controlling the flow guide piece to be in a first position when the electronic control device monitors that the smoke prevention device is not normally opened.