Range hood and pipeline noise reduction device thereof

Abstract

The utility model provides an improved range hood and a pipeline noise reduction device thereof. The embodiment of the utility model provides a pipeline noise reduction device for a smoke exhaust ventilator, the pipeline noise reduction device is arranged to be suitable for surrounding and wrapping a smoke exhaust pipeline (9) of the smoke exhaust ventilator, and the pipeline noise reduction device comprises a first shell part (1) and a second shell part (2) which are arranged in a split mode; the pipeline noise reduction device further comprises a sound absorption and noise reduction piece. The first shell part (1) and the second shell part (2) are arranged to be detachably assembled together to form an outer shell part surrounding and wrapping a smoke exhaust pipeline (9) of the smoke exhaust ventilator; and the shell part is arranged to be suitable for extruding the sound absorption and noise reduction part between the shell part and a smoke exhaust pipeline (9) of the smoke exhaust ventilator. Therefore, the pipeline noise reduction device is convenient to transport.

Description

Technical Field

[0001] This application relates to the field of range hoods, and in particular to the noise reduction technology of the exhaust pipe of range hoods.

Background Art

[0002] In the Asian region, due to the traditional cooking habit of stir-frying, the oil content in the smoke generated during cooking is particularly high. Therefore, range hoods used to exhaust the cooking fumes generated during cooking have become an essential important household appliance in daily life. With the continuous improvement of people's requirements for the quality of life, range hoods are also constantly upgraded and improved.

[0003] The exhaust pipe of a range hood is one of the main noise sources of the range hood. At present, noise reduction devices for the exhaust pipes of range hoods have been proposed. However, the existing noise reduction devices for the exhaust pipes of range hoods are generally large and bulky because they need to surround and cover the periphery of the exhaust pipe, and are not convenient for transportation. Moreover, the installation environments of range hoods for different users vary widely. The existing noise reduction devices for the exhaust pipes of range hoods have fixed sizes or limited choices, and cannot conveniently match the actual needs of users.

[0004] Unless there is sufficient evidence to support it, the existing technologies described here do not mean that these existing technologies were known to those of ordinary skill in the art in the field related to this application before the filing date of this application.

Summary of the Invention

[0005] An object of an embodiment of this application is to propose an improved range hood and its pipeline noise reduction device for at least one of the above technical problems and / or other possible technical problems not mentioned in this application.

[0006] According to the first aspect of this application, an embodiment of this application provides a pipeline noise reduction device for a range hood. The pipeline noise reduction device is configured to be suitable for surrounding and covering the exhaust pipe of the range hood. The pipeline noise reduction device includes a first housing member and a second housing member that are separately provided; the pipeline noise reduction device further includes a sound absorption and noise reduction member; the first housing member and the second housing member are configured to be detachably assembled together to form a housing member that surrounds and covers the exhaust pipe of the range hood; the housing member is configured to be suitable for squeezing the sound absorption and noise reduction member between the housing member and the exhaust pipe of the range hood. The first housing member and the second housing member are separately provided. Thus, when transporting, the first housing member and the second housing member are separated, and when applying, the first housing member and the second housing member are combined, and the pipeline noise reduction device is convenient for transportation.

[0007] In one or some embodiments, the housing member is provided with at least one circle of virtual tangent lines that are easily breakable and arranged along its circumference for adjusting the length of the housing member. The housing member is provided with at least one circle of virtual tangent lines that are easily breakable and arranged along its circumference, and is adapted to divide the housing member into two along a certain circle of virtual tangent lines to remove the redundant part so as to reduce the length of the housing member. Thus, it is convenient to adjust the length of the housing member based on the actual needs of the user.

[0008] In one or some embodiments, the first end of the first housing member and the first end of the second housing member are arranged to be detachably hinged together; the second end of the first housing member and the second end of the second housing member are arranged to be detachably clamped together. Thus, the first housing member and the second housing member are adapted to be detachably assembled together.

[0009] In one or some embodiments, one of the first end of the first housing member and the first end of the second housing member is provided with a first hinge member, and the other is provided with a second hinge member; one of the second end of the first housing member and the second end of the second housing member is provided with a convex catch, and the other is provided with a card slot. Thus, the first housing member and the second housing member are adapted to be detachably assembled together.

[0010] In one or some embodiments, the first hinge member includes a through hole; the second hinge member includes a hook that matches the through hole. Thus, the first housing member and the second housing member are adapted to be detachably assembled together.

[0011] In one or some embodiments, the housing member is cylindrical; and / or

[0012] The sound absorption and noise reduction member includes sound-absorbing cotton; and / or

[0013] The sound absorption and noise reduction member is made of a flexible member and is arranged to be bent around the smoke exhaust pipe of the range hood under the extrusion of the housing member.

[0014] In one or some embodiments, the first housing member and the second housing member are arranged to be stacked together for transportation; and / or

[0015] A plurality of the first housing members are arranged to be stacked together for transportation; and / or

[0016] A plurality of the second housing members are arranged to be stacked together for transportation; and / or

[0017] The sound absorption and noise reduction member includes sound-absorbing cotton. The sound-absorbing cotton is an integral part, and the head and tail of the sound-absorbing cotton are connected when the sound-absorbing cotton is located between the housing member and the smoke exhaust pipe of the range hood.

[0018] The first housing member and the second housing member are arranged to be stackable for transportation; and / or, a plurality of the first housing members are arranged to be stackable for transportation; and / or, a plurality of the second housing members are arranged to be stackable for transportation; thereby facilitating transportation.

[0019] According to a second aspect of the present application, an embodiment of the present application provides a range hood, including an exhaust duct and the duct noise reduction device as described in any one of the above; the duct noise reduction device surrounds and wraps the exhaust duct.

[0020] In one or some embodiments, the exhaust duct is an exhaust pipe or an air duct base.

[0021] In one or some embodiments, the number of the housing members is at least two; each housing member is arranged in sequence along the extending direction of the exhaust duct.

[0022] It should be noted here that the directional expressions such as "from top to bottom", "above", and "below" in the present application are based on the normal use state of the range hood if not otherwise specified.

[0023] It should be pointed out here that the "first" and "second" in this specification are only for descriptive purposes and do not indicate relative importance; moreover, they do not define the quantity of the features they limit; in addition, they do not define the logical relationship or sequential relationship of the features they limit.

[0024] The above technical solution content of the present application is not used to describe all possible implementation manners of the present application. Throughout the application, guidance is provided by listing examples in many places, and these examples can be used in various feasible combinations.

Description of the Drawings

[0025] The following drawings only schematically illustrate and explain the present application and do not limit the scope of the present application, where:

[0026] Figure 1 is an exploded view of the structure of an embodiment of a duct noise reduction device for a range hood according to the present application;

[0027] Figure 2 is an effect diagram of the application state of an embodiment of a duct noise reduction device for a range hood according to the present application;

[0028] Figure 3 is a schematic diagram of the installation process of an embodiment of a duct noise reduction device for a range hood according to the present application;

[0029] Figure 4 is a schematic diagram of the structure of an embodiment of a duct noise reduction device for a range hood according to the present application;

[0030] Figure 5 is a sectional view along line A-A in Figure 4 ;

[0031] Figure 6 is Figure 5 an enlarged view of the local structure at position B in

[0032] Figure 7 is Figure 5 an enlarged view of the local structure at position C in

[0033] Figure 8 a schematic diagram of the working state of an embodiment of a range hood according to the present application;

[0034] Figure 9 is Figure 8 a rendering of the application state of the duct noise reduction device of the illustrated range hood embodiment.

[0035] Reference numerals:

[0036] 1 - First housing member, 2 - Second housing member, 3 - Virtual tangent line, 4 - Through hole, 5 - Hook, 6 - Protrusion, 7 - Card slot, 8 - Sound-absorbing cotton, 9 - Exhaust duct, 10 - Housing, 11 - Smoke collecting hood, 12 - Centrifugal fan, 13 - Ceiling, 14 - Suspended ceiling, 15 - Common flue.

Detailed implementation manners

[0037] In order to make the technical problems, technical solutions, and beneficial technical effects to be solved by the present application clearer, the present application will be further described in detail below in conjunction with the drawings and multiple exemplary embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the protection scope of the present application. And each embodiment may be described using the same view or multiple views, but the features appearing in the same view cannot be interpreted as the features that must be possessed by an embodiment. On the contrary, as long as they are not mutually exclusive technically, they can be combined in any suitable way. Moreover, for the sake of simplicity, different embodiments of different aspects may be presented in the same specific design. However, this presentation does not mean that the embodiments of these aspects should appear together. All possible decompositions and / or combinations of embodiments and / or technical features should also consider the description of the specification and the content that can be directly and unambiguously determined by those skilled in the art based on the description of the specification.

[0038] The present application proposes an embodiment of a duct noise reduction device for a range hood. The duct noise reduction device is configured to be adapted to surround and cover the exhaust duct 9 of the range hood. Thus, the duct noise reduction device is adapted to absorb and reduce the noise generated in the exhaust duct 9, thereby reducing the noise during the operation of the range hood and improving the user experience.

[0039] The pipeline noise reduction device includes a first housing member 1 and a second housing member 2 which are separately arranged, as Figure 1 shown. The pipeline noise reduction device further includes a sound absorption and noise reduction member. The first housing member 1 and the second housing member 2 are arranged to be detachably assembled together to form an outer housing member that surrounds and wraps the exhaust pipe 9 of the range hood. In other words, when the first housing member 1 and the second housing member 2 are assembled together, they form an outer housing member that surrounds and wraps the exhaust pipe 9 of the range hood, as Figure 2 shown. The outer housing member is detachable; that is, the outer housing member can be disassembled into the mutually independent first housing member 1 and second housing member 2.

[0040] The outer housing member is arranged to be suitable for squeezing the sound absorption and noise reduction member between the outer housing member and the exhaust pipe 9 of the range hood. In other words, the sound absorption and noise reduction member is arranged between the inner surface of the outer housing member and the outer surface of the exhaust pipe 9 of the range hood, as Figure 2 and 3 shown.

[0041] The sound absorption and noise reduction member is made of a flexible member and is arranged to be suitable for bending around the exhaust pipe 9 of the range hood under the extrusion of the outer housing member. The sound absorption and noise reduction member includes a sound absorption cotton 8. The sound absorption cotton 8 is an integral part. Before being placed between the outer housing member and the exhaust pipe 9, the sound absorption cotton 8 is in a plate shape, as Figure 1 shown. When the sound absorption cotton 8 is located between the outer housing member and the exhaust pipe 9 of the range hood, the head and tail of the sound absorption cotton 8 are connected end to end. Specifically, when the first housing member 1 and the second housing member 2 start to be assembled, the sound absorption cotton 8 is placed inside the first housing member 1 and the second housing member 2; during the assembly process of the first housing member 1 and the second housing member 2, the sound absorption cotton 8 bends around the exhaust pipe 9 of the range hood under the extrusion of the outer housing member; when the assembly of the first housing member 1 and the second housing member 2 is completed, the outer housing member squeezes the sound absorption cotton 8 between the outer housing member and the exhaust pipe 9. Thus, under the action of the extrusion force of the outer housing member, the pipeline noise reduction device is fixed to the exhaust pipe 9.

[0042] The outer housing member is in a cylindrical shape, as Figure 2 and 3 shown. The first housing member 1 is in a semi-cylindrical shape, as Figure 1 shown. The second housing member 2 is also in a semi-cylindrical shape. The first housing member 1 and the second housing member 2 have substantially the same shape and size. The exhaust pipe 9 of the range hood is also in a cylindrical shape. When the outer housing member surrounds and wraps the exhaust pipe 9, a sound absorption cotton 8 is stuffed between the outer housing member and the exhaust pipe 9.

[0043] The first ends of the first housing member 1 and the second housing member 2 are arranged to be detachably hinged together. The second ends of the first housing member 1 and the second housing member 2 are arranged to be detachably snapped together. One of the first ends of the first housing member 1 and the second housing member 2 is provided with a first hinge member, and the other is provided with a second hinge member. One of the second ends of the first housing member 1 and the second housing member 2 is provided with a convex snap 6, and the other is provided with a snap groove 7, as Figure 5 and 7 shown. The first hinge member includes a through hole 4. The second hinge member includes a hook 5 that matches the through hole 4, as Figure 5 and 6 shown.

[0044] When the first housing member 1 and the second housing member 2 start to be assembled, the first hinge member and the second hinge member are hinged together, that is, the hook 5 is inserted into the through hole 4, and the sound-absorbing cotton 8 is placed inside the first housing member 1; then, a part of the smoke exhaust pipe 9 is placed inside the first housing member 1 so that the sound-absorbing cotton 8 is located between the smoke exhaust pipe 9 and the first housing member 1; then, the second housing member 2 is rotated towards the first housing member 1 around the hinge joint of the first hinge member and the second hinge member. During the rotation, the sound-absorbing cotton 8 bends around the smoke exhaust pipe 9 of the range hood under the extrusion of the housing member; finally, the convex snap 6 snaps into the snap groove 7, and the assembly of the first housing member 1 and the second housing member 2 is completed. The bent sound-absorbing cotton 8 surrounds and wraps the smoke exhaust pipe 9 of the range hood. At this time, the housing member squeezes the sound-absorbing cotton 8 between the housing member and the smoke exhaust pipe 9, as Figure 2 shown.

[0045] The first housing member 1 and the second housing member 2 are arranged to be stacked together for transportation. There are various possibilities for the specific "stacking" method. For example, the openings of the first housing member 1 and the second housing member 2 face the same direction, and the inner wall of one abuts against the outer wall of the other. For the convenience of "stacking", both the first housing member 1 and the second housing member 2 are made of a material with a certain elasticity. Preferably, both the first housing member 1 and the second housing member 2 are integrally formed of plastic materials.

[0046] The housing member is provided with multiple circles of easily breakable virtual tangent lines 3 arranged along its circumference for adjusting the length of the housing member, as Figures 1 to 4As shown. Any virtual tangent line 3 of a circle is set in half on the first housing member 1 and the other half on the second housing member 2. Specifically, the outer housing member is provided with five virtual tangent lines 3 along its circumferential direction. By hand or with the aid of tools, the outer housing member can be divided into two along any virtual tangent line 3. Specifically, before the first housing member 1 and the second housing member 2 are assembled together, the first housing member 1 is divided into two along a certain virtual tangent line 3 on the first housing member 1, and the second housing member 2 is divided into two along the corresponding virtual tangent line 3 on the second housing member 2. Then, a part separated from the first housing member 1 and a part separated from the second housing member 2 are selected and assembled together to form an outer housing member that surrounds and covers the exhaust pipe 9 of the range hood. Which virtual tangent line 3 is specifically selected is determined according to actual needs. It should be noted that the part separated from the first housing member 1 and the part separated from the second housing member 2 that are selected should be the parts provided with the first hinge member, the second hinge member, the convex protrusion 6 and the card slot 7.

[0047] Exemplarily, in another embodiment of the pipeline noise reduction device for a range hood of the present application, a plurality of first housing members 1 are arranged to be suitable for being stacked together for transportation. The differences between this embodiment and the above embodiment are mainly described. For the same or similar parts of this embodiment, reference can be made to the above embodiment.

[0048] Exemplarily, in another embodiment of the pipeline noise reduction device for a range hood of the present application, a plurality of second housing members 2 are arranged to be suitable for being stacked together for transportation. The differences between this embodiment and the above embodiment are mainly described. For the same or similar parts of this embodiment, reference can be made to the above embodiment.

[0049] The present application also proposes an embodiment of a range hood, which includes a casing 10, a smoke collecting hood 11, a centrifugal fan 12, an exhaust pipe 9 and the above-mentioned embodiment of the pipeline noise reduction device, as Figure 8 shown. The casing 10 and the smoke collecting hood 11 are arranged in sequence from top to bottom.

[0050] The centrifugal fan 12 is an external centrifugal fan. The centrifugal fan 12 is fixed between the ceiling 13 and the suspended ceiling 14, as Figure 8 shown. Specifically, the centrifugal fan 12 is located below the ceiling 13 and above the suspended ceiling 14, as Figure 8 shown. The casing 10 and the smoke collecting hood 11 are both located below the suspended ceiling 14. The air inlet of the centrifugal fan 12 is connected to the air flow outlet at the top of the casing 10. The air outlet of the centrifugal fan 12 is connected to the air inlet port of the exhaust pipe 9. The air outlet port of the exhaust pipe 9 is connected to the common flue 15.

[0051] When the centrifugal fan 12 operates, a negative pressure is formed, generating an oil fume airflow. The oil fume airflow flows into the smoke collecting hood 11, and then the smoke collecting hood 11 guides the oil fume airflow into the casing 10. Then the oil fume airflow flows out of the casing 10 and into the centrifugal fan 12. Then the oil fume airflow flows out of the centrifugal fan 12 and into the exhaust pipe 9. Then the oil fume airflow flows out of the exhaust pipe 9 and into the common flue 15.

[0052] The exhaust pipe 9 is an exhaust duct. Specifically, the exhaust pipe 9 is a telescopic pipe. During transportation, the exhaust pipe 9 contracts. During application, the exhaust pipe 9 extends, as Figure 2 and 3 shown. Thus, while realizing the exhaust function, the exhaust pipe 9 itself is also convenient for transportation.

[0053] The pipe noise reduction device is wrapped around the exhaust pipe 9. The number of outer shell parts is three. In other words, the number of the first shell parts 1 is three, and the number of the second shell parts 2 is also three, as Figure 8 and 9 shown. The three first shell parts 1 correspond to the three second shell parts 2 one by one.

[0054] Each outer shell part is arranged in sequence along the extension direction of the exhaust pipe 9, as Figure 8 and 9 shown. In this embodiment, each outer shell part is connected in sequence along the extension direction of the exhaust pipe 9. It should be noted that the number of outer shell parts is not limited to three, and can also be other numbers, specifically determined based on actual needs.

[0055] Exemplarily, in another embodiment of the range hood of the present application, each outer shell part is arranged at intervals of a certain distance along the extension direction of the exhaust pipe. This embodiment focuses on the differences from the above embodiment. For the same or similar parts of this embodiment, refer to the above embodiment.

[0056] Exemplarily, in another embodiment of the range hood of the present application, the exhaust pipe is a duct base. The duct base is arranged on the top wall of the casing. This embodiment focuses on the differences from the above embodiment. For the same or similar parts of this embodiment, refer to the above embodiment.

[0057] Although the specific implementation schemes have been described above, these implementation schemes are not intended to limit the scope of the disclosure of the present application, even when only describing a single implementation scheme with respect to specific features. The feature examples provided in the disclosure of the present application are for illustrative purposes only and not for limitation, unless explicitly stated otherwise. In specific implementations, multiple features can be combined with each other according to actual needs and when technically feasible. Various substitutions, changes and modifications can also be conceived without departing from the spirit and scope of the present application.

Claims

1. A pipe noise reduction device for a range hood, the pipe noise reduction device being configured to surround and cover a smoke exhaust pipe (9) of the range hood, characterized in that: The pipeline noise reduction device comprises a first shell member (1) and a second shell member (2) which are separately arranged; The pipeline noise reduction device also includes a sound absorbing and noise reducing member; The first shell member (1) and the second shell member (2) are configured to be detachably assembled together to form an outer shell member surrounding and covering the smoke exhaust duct (9) of the range hood; The outer shell is configured to be suitable for squeezing the sound absorbing and noise reducing component between the outer shell and the smoke exhaust duct (9) of the range hood.

2. The pipeline noise reduction device according to claim 1, characterized in that: The outer shell is provided with at least one circle of virtual tangent lines (3) arranged along its circumference and easily breakable, for adjusting the length of the outer shell.

3. The pipeline noise reduction device according to claim 1, characterized in that: The first end of the first shell member (1) and the first end of the second shell member (2) are configured to be detachably hinged together; The second end of the first housing member (1) and the second end of the second housing member (2) are configured to be detachably snap-fitted together.

4. The pipeline noise reduction device according to claim 3, characterized in that: A first hinge is disposed on one of the first end of the first housing member (1) and a first end of the second housing member (2), and a second hinge is disposed on the other of the first end and the second hinge is disposed on the other end; One of the second end of the first housing member (1) and the second end of the second housing member (2) is provided with a latching protrusion (6), and the other of the two is provided with a latching groove (7).

5. The pipeline noise reduction device according to claim 4, characterized in that: The first hinged member comprises a through hole (4); The second hinged member comprises a hook (5) matching the through hole (4).

6. The pipeline noise reduction device according to claim 1, characterized in that: The outer shell is cylindrical; and / or The sound absorbing and noise reducing component comprises sound absorbing cotton (8); and / or The sound absorbing and noise reducing component is a flexible component, and is configured to be able to bend around the smoke exhaust duct (9) of the range hood under the pressure of the outer shell component.

7. The pipeline noise reduction device according to claim 1, characterized in that: The first shell member (1) and the second shell member (2) are configured to be stacked together for transportation; and / or A plurality of said first shell members (1) are configured to be stacked together for transportation; and / or A plurality of said second housing members (2) are configured to be stacked together for transportation; and / or The sound-absorbing and noise-reducing component comprises sound-absorbing cotton (8), which is an integral component. When the sound-absorbing cotton (8) is located between the outer shell component and the smoke exhaust duct (9) of the range hood, the sound-absorbing cotton (8) is connected end to end.

8. A range hood, characterized in that: It comprises a smoke exhaust pipe (9) and a pipe noise reduction device as claimed in any one of claims 1 to 7; The pipeline noise reduction device surrounds and covers the smoke exhaust pipeline (9).

9. The range hood according to claim 8, characterized in that: The smoke exhaust pipe (9) is an exhaust pipe or an air duct seat.

10. The range hood according to claim 8, characterized in that: The number of the housing members is at least two; The outer shell components are arranged in sequence along the extension direction of the smoke exhaust duct (9).

Images