Range hood working noise control structure and range hood

Abstract

The utility model provides a range hood working noise control structure and a range hood, the range hood working noise control structure comprises a housing, the housing is provided with a fixed panel and a movable turning plate; the movable turning plate can rotate between an opening position and a closing position, and when the movable turning plate is located at the opening position, a strip-shaped gap is formed between the hinged end of the movable turning plate and the fixed panel; and a plugging piece is arranged between the fixed panel and the movable turning plate and is used for plugging the strip-shaped gap. According to the range hood working noise control structure and the range hood provided by the utility model, the working noise of a movable turning plate type range hood can be reduced, and meanwhile, the smoke gathering effect of the range hood is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, in particular to a range hood working noise control structure and the range hood. Background Art

[0002] Noise performance and smoke collection effect are important indicators for measuring the performance of range hoods. The air intake state of the range hood directly affects the performance of the range hood. Since the measurement conditions of working noise are closer to the actual usage scenarios of users, lower working noise will bring users a better usage experience.

[0003] The national standard "GBT 17713-2022 Range hoods and other cooking fume extraction devices" stipulates the specific position of the microphone during the working noise test, which is 1500mm from the ground, 700mm from the wall on which the machine is mounted, and facing the center of the range hood. This position is close to the position where the user is exposed to the noise of the range hood during cooking.

[0004] The movable flap of the movable flap range hood is driven to open and close by a motion mechanism, and the structural design of the movable flap directly affects its smoke collection effect and noise performance. The smoke collection effect and noise performance of the movable flap of the existing movable flap range hood are poor, which seriously affects the user experience and also limits the promotion and development of movable flap range hoods.

[0005] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Utility Model Content

[0006] The utility model aims to provide a range hood operating noise control structure, which can reduce the operating noise of a movable flap type range hood and improve the smoke collection effect of the range hood.

[0007] Another object of the present utility model is to provide a range hood, which comprises the above-mentioned range hood working noise control structure.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] A range hood operating noise control structure comprises a casing, wherein the casing is provided with a fixed panel and a movable flap; the movable flap can rotate between an open position and a closed position, and when the movable flap is located at the open position, a strip gap is formed between the hinged end of the movable flap and the fixed panel; a blocking piece is provided between the fixed panel and the movable flap, and the blocking piece blocks the strip gap.

[0010] According to an embodiment of the present invention, the blocking member is made of elastic material.

[0011] According to one embodiment of the present invention, the blocking member is made of sound insulation material.

[0012] According to an embodiment of the present utility model, the blocking member is fixedly arranged on the surface of the fixed panel.

[0013] According to an embodiment of the present utility model, the blocking member is fixedly arranged at the end of the hinged end of the movable flap.

[0014] According to an embodiment of the present utility model, one end of the blocking member is fixedly connected to the surface of the fixed panel, and the other end of the blocking member is fixedly connected to the end of the hinged end of the movable flap.

[0015] According to one embodiment of the utility model, the blocking member is fixed to the end of the hinged end of the movable flap and / or the surface of the fixed panel by bolts or adhesive.

[0016] According to an embodiment of the present utility model, the thickness of the blocking member is greater than the width of the strip-shaped gap.

[0017] According to one embodiment of the present invention, the width of the strip gap is 2-5 mm.

[0018] The utility model also provides a range hood, comprising the range hood working noise control structure.

[0019] Compared with the prior art, the advantages and beneficial effects of the embodiments of the present invention are:

[0020] The range hood working noise control structure and the range hood provided by the embodiments of the utility model are characterized in that a sealing member is arranged in the strip gap between the hinged end of the movable flap and the fixed panel when the movable flap is in the open position, so as to completely seal the strip gap, thereby improving the working noise performance and smoke collection performance of the movable flap type range hood, and effectively improving the problem of poor working noise performance caused by the strip gap, and at the same time solving or effectively improving the problem of poor smoke collection effect caused by the strip gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0022] Figure 1 A schematic diagram of the structure of the range hood working noise control structure provided by the embodiment of the utility model without a blocking member;

[0023] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0024] Figure 3 A structural schematic diagram of a sealing member of a range hood working noise control structure provided by an embodiment of the utility model;

[0025] Figure 4 A schematic diagram of the overall structure of the range hood working noise control structure provided by an embodiment of the utility model;

[0026] Figure 5 for Figure 4 The enlarged schematic diagram of point B in the middle;

[0027] Figure 6 A schematic diagram of the structure of the range hood working noise control structure provided by the embodiment of the utility model when the movable flap is in the closed position;

[0028] Figure 7 A schematic diagram of a connection structure of a blocking member, a movable flap and a fixed panel of a range hood working noise control structure provided by an embodiment of the utility model;

[0029] Figure 8 A schematic diagram of another connection structure of the blocking member, the movable flap and the fixed panel of the range hood working noise control structure provided by the embodiment of the utility model;

[0030] Fig. 9 A schematic diagram of another connection structure of the blocking member, the movable flap and the fixed panel of the range hood operating noise control structure provided in an embodiment of the utility model.

[0031] Description of reference numerals:

[0032] 1. Casing; 2. Fixed panel; 21. Opening; 3. Movable flap; 4. Strip gap; 5. Blocking piece; 51. First connection point; 52. Second connection point. DETAILED DESCRIPTION

[0033] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present invention and does not limit the present invention. In fact, it will be clear to those skilled in the art that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as a part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desired that the present invention includes such modifications and variations within the scope of the appended claims and their equivalents.

[0034] In the description of the present invention, "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprising" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, but do not exclude other elements or objects. The directions or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected", "connected" and "set" used in the present invention should be understood in a broad sense, for example, they can be fixedly connected or detachably connected; they can be directly connected or indirectly connected through an intermediate component; they can be wired electrical connections, radio connections, or wireless communication signal connections. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0035] like Figure 1 , Figure 2 , Figure 3 As shown, an embodiment of the utility model provides a working noise control structure of a range hood, which includes a housing 1, which is provided with a fixed panel 2 and a movable flap 3. In this embodiment, an opening 21 is provided in the middle or lower part of the fixed panel 2, and the movable flap 3 is arranged in the opening 21. The connection between the fixed panel 2, the movable flap 3 and the housing 1 is a prior art and will not be repeated. The movable flap 3 can rotate between an open position and a closed position. When the movable flap 3 is in the closed position, the movable flap 3 closes the opening 21 on the fixed panel 2. When the movable flap 3 is in the open position, a strip gap 4 is formed between the hinged end (top end) of the movable flap 3 and the fixed panel 2. A blocking member 5 is provided between the fixed panel 2 and the movable flap 3, and the blocking member 5 blocks the strip gap 4. The shape of the blocking member 5 corresponds to the shape of the strip gap 4, and is also strip-shaped, so as to completely block the strip gap 4.

[0036] In order to ensure the range of motion of the movable flap 3 and the cumulative error of each component after assembly, there is a certain gap between the movable flap 3 and the fixed panel 2 on the casing 1 when the movable flap 3 is in the open position, namely, the strip gap 4. After research, the applicant found that this gap will deteriorate the noise performance (especially the working noise) and smoke collection effect of the range hood. Due to the existence of the strip gap 4, the noise insulation effect of the movable flap 3 on the noise generated by the operation of the range hood fan will be worse. At the same time, there is a risk of oil smoke escaping from the strip gap 4 during the cooking process. The test results of the applicant show that when the movable flap 3 is in the open position, the smaller the width of the strip gap 4, the smaller the working noise; at the same time, in the smoke collection effect test under a back pressure of 150Pa, when the movable flap 3 is in the open position, the smaller the width of the strip gap 4, the less oil smoke escapes from this gap. In the embodiment of the utility model, a sealing member 5 is provided in the strip gap 4 to completely seal the strip gap 4, thereby improving the working noise performance and smoke collection performance of the movable flap type range hood, and effectively improving the problem of poor working noise performance caused by the strip gap 4, while solving the problem of poor smoke collection effect caused by the strip gap 4.

[0037] In order to ensure the blocking effect, the thickness of the blocking member 5 is greater than the width of the strip gap 4, so that the blocking member 5 and the strip gap 4 are interference fit to improve the working noise performance and smoke collection performance of the movable flap type range hood.

[0038] If the hinged end of the movable flap 3 and the surface of the fixed panel 2 are not flat, the width of the strip gap 4 will be uneven, and a hole will be formed between the blocking member 5. At this time, in order to improve the adaptability of the blocking member 5, in one embodiment of the utility model, the blocking member 5 is an elastic material to adapt to the uneven width of the strip gap 4 and ensure the blocking effect. Furthermore, the blocking member 5 is a sound insulation material, which further reduces the working noise of the movable flap range hood on the basis of blocking the strip gap 4 to ensure the working noise performance.

[0039] In one embodiment of the utility model, the blocking member 5 is fixed to the surface of the fixed panel 2 and is fixed to the surface of the fixed panel 2 by bolts, adhesive or pressing. When the movable flap 3 is in the open position, the end of the hinged end of the movable flap 3 abuts against the blocking member 5, and the blocking member 5 completely blocks the strip gap 4 between the hinged end of the movable flap 3 and the fixed panel 2, so as to improve the working noise performance and smoke collection performance of the movable flap type range hood, which can effectively improve the problem of poor working noise performance caused by the strip gap 4, and at the same time solve the problem of poor smoke collection effect caused by the strip gap 4.

[0040] In one embodiment of the utility model, the blocking member 5 is fixed to the end of the hinged end of the movable flap 3, and is fixed to the end of the hinged end of the movable flap 3 by bolts, adhesive or compression. When the movable flap 3 is in the open position, the surface of the fixed panel 2 abuts against the blocking member 5, and the blocking member 5 completely blocks the strip gap 4 between the hinged end of the movable flap 3 and the fixed panel 2, so as to improve the working noise performance and smoke collection performance of the movable flap type range hood, which can effectively improve the problem of poor working noise performance caused by the strip gap 4, and at the same time solve the problem of poor smoke collection effect caused by the strip gap 4.

[0041] When the blocking member 5 is fixed to the movable flap 3 or the fixed panel 2, the blocking effect of the end of the blocking member 5 in contact with the fixed panel 2 or the movable flap 3 may be poor. Therefore, in a preferred embodiment of the present invention, Figure 4-Figure 6 As shown, the blocking member 5 is made of elastic material, and one end of the blocking member 5 is fixedly connected to the surface of the fixed panel 2, and the other end of the blocking member 5 is fixedly connected to the end of the hinged end of the movable flap 3, and can also be fixed to the end of the hinged end of the movable flap 3 and the surface of the fixed panel 2 by bolts, adhesive or compression. In this way, whether the movable flap 3 is in the open position or the closed position, the end of the hinged end of the movable flap 3 and the surface of the fixed panel 2 are connected to the elastic blocking member 5, and the gap (including the strip gap 4) between the movable flap 3 and the fixed panel 2 is always completely blocked to improve the working noise performance and smoke collection performance of the movable flap type range hood, which can effectively improve the problem of poor working noise performance caused by the strip gap 4, and solve the problem of poor smoke collection effect caused by the strip gap 4. At the same time, due to the elasticity of the material of the blocking member 5 itself, the movable flap 3 can be opened and closed normally.

[0042] In this embodiment, when the movable flap 3 is in the open position, the connection span of the elastic material blocking member 5 is small, and the blocking member 5 does not generate tension or generates a small tension or is in a compressed state. At this time, the length of the elastic material blocking member 5 along the width direction of the gap between the hinged end of the movable flap 3 and the fixed panel 2 is L1. At this time, the elastic material blocking member 5 generates a tension F1. When F1>0, the elastic material blocking member 5 generates tension; when F=0, the elastic material blocking member 5 does not generate tension; when F1<0, the elastic material blocking member 5 is compressed. When the movable flap 3 is in the closed position, the connection span of the elastic material blocking member 5 is large, and the blocking member 5 generates a large tension, but under the drive of the motion mechanism (the driving connection structure between the movable flap 3 and the housing), the movable flap 3 can be closed smoothly without generating other deformations caused by the elastic material blocking member 5. At this time, the length of the elastic material blocking member 5 along the width direction of the gap between the hinged end of the movable flap 3 and the fixed panel 2 is L2. At this time, the elastic material blocking member 5 generates a pulling force F2, and F2>0. During the switching process of the movable flap 3 between the open position and the closed position, the length L of the elastic material blocking member 5 along the gap width direction between the hinged end of the movable flap 3 and the fixed panel 2 satisfies: L1<L<L2.

[0043] In this embodiment, the blocking member 5 is made of an elastic material that has sufficient elasticity and can meet the requirements of long-term use while taking into account both aesthetics and oil resistance.

[0044] In this embodiment, the connection point between the blocking member 5 and the movable flap 3 is a first connection point 51, and the connection point between the blocking member 5 and the fixed panel 2 is a second connection point 52. Figure 7-Figure 9 As shown, the first connection point 51 can be set at the front side or rear side of the hinged end of the movable flap 3, and the second connection point 52 can be set on the fixed panel 2 at a position higher than the hinged end of the movable flap 3 or lower than the hinged end of the movable flap 3.

[0045] In one embodiment of the utility model, the width of the strip gap 4 is 2-5 mm. If the width is too large, the size of the blocking member 5 will be too large, resulting in increased costs. If the width of the strip gap 4 is too small, it is necessary to improve the assembly accuracy of the connection structure between the casing 1 and the movable flap 3, resulting in increased production costs.

[0046] The embodiment of the utility model further provides a range hood, comprising the above-mentioned range hood working noise control structure.

[0047] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A range hood operating noise control structure, characterized in that: The invention comprises a casing (1), wherein the casing (1) is provided with a fixed panel (2) and a movable flap (3); the movable flap (3) can be rotated between an open position and a closed position, and when the movable flap (3) is located at the open position, a strip-shaped gap (4) is formed between the hinged end of the movable flap (3) and the fixed panel (2); a blocking member (5) is provided between the fixed panel (2) and the movable flap (3), and the blocking member (5) blocks the strip-shaped gap (4).

2. The range hood operating noise control structure according to claim 1, characterized in that: The blocking member (5) is made of elastic material.

3. The range hood operating noise control structure according to claim 2, characterized in that: The blocking member (5) is made of sound insulation material.

4. The range hood operating noise control structure according to claim 1, 2 or 3, characterized in that: The blocking member (5) is fixedly arranged on the surface of the fixed panel (2).

5. The range hood operating noise control structure according to claim 1, 2 or 3, characterized in that: The blocking member (5) is fixedly arranged at the end of the hinged end of the movable flap (3).

6. The range hood operating noise control structure according to claim 2 or 3, characterized in that: One end of the blocking member (5) is fixedly connected to the surface of the fixed panel (2), and the other end of the blocking member (5) is fixedly connected to the end of the hinged end of the movable flap (3).

7. The range hood operating noise control structure according to claim 1, 2 or 3, characterized in that: The blocking member (5) is fixed to the end of the hinged end of the movable flap (3) and / or the surface of the fixed panel (2) by means of bolts or adhesive.

8. The range hood operating noise control structure according to claim 1, 2 or 3, characterized in that: The thickness of the blocking member (5) is greater than the width of the strip-shaped gap (4).

9. The range hood operating noise control structure according to claim 8, characterized in that: The width of the strip-shaped gap (4) is 2-5 mm.

10. A range hood, characterized in that: It comprises a range hood operating noise control structure according to any one of claims 1 to 9.

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