Noise reduction and air guide structure and heater

Abstract

The noise reduction air guide structure comprises an air guide cylinder, a first connecting port is formed in one end of a hollow cavity of the air guide cylinder, and a second connecting port is formed in the other end of the hollow cavity of the air guide cylinder; at least two groups of flow guide parts are arranged on the inner wall of the hollow cavity, and each group of flow guide parts consists of at least two flow deflectors; the length direction of each flow deflector is parallel to the axial direction of the hollow cavity, and the width direction of each flow deflector is parallel to the radial direction of the hollow cavity. The first connecting port is round, the second connecting port is square, the diameter length of the first connecting port is not smaller than the diagonal length of the second connecting port, and the hollow cavity of the air guide cylinder shrinks from the first connecting port to the second connecting port. The heater comprises the noise reduction and air guide structure, and the noise reduction effect can be effectively achieved.

Description

Technical Field

[0001] The utility model relates to the field of heaters, in particular to a heater with a noise reduction air guiding structure. Background Art

[0002] Heaters have become essential household appliances in people's daily work and life. Heaters have the functions of adjusting the space temperature and drying items. Most heaters on the market will make relatively loud noises during use, including relatively large wind noises. The hot air of this type of heater comes from the cold air blown by the fan blades and is heated by the heating component. Since the air blown by the fan blades is a spiral air flow, and this air flow directly blows onto the heating component, it causes the air flow to impact the inner wall of the air guiding cylinder or the heater, resulting in relatively large wind noises. Although there are also heaters with a mute function on the market, their prices are relatively higher.

[0003] Therefore, there is an urgent need for a simple noise reduction structure and a heater equipped with this structure. Summary of the Utility Model

[0004] Based on this, the utility model provides a noise reduction air guiding structure and a heater. The feature is that through the flow guiding pieces arranged in the air guiding cylinder, the spiral air flow is guided into a parallel air flow, thereby reducing the impact of the air flow on the heating component, and thus reducing the wind noise. In addition, the flow guiding piece also has a reinforcing effect, reducing the vibration of the air guiding cylinder caused by the impact of the wind force, thereby achieving the noise reduction effect.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] A noise reduction air guiding structure includes an air guiding cylinder. One end of the hollow cavity of the air guiding cylinder forms a first connection port, and the other end forms a second connection port; at least two groups of flow guiding parts are arranged on the inner wall of the hollow cavity, and each group of flow guiding parts is composed of at least two flow guiding pieces; the length direction of each flow guiding piece is parallel to the axial direction of the hollow cavity, and the width direction of each flow guiding piece is parallel to the radial direction of the hollow cavity.

[0007] Further, the shape of the first connection port is circular, the shape of the second connection port is square, the diameter length of the first connection port is not less than the diagonal length of the second connection port, and the hollow cavity of the air guiding cylinder shrinks from the first connection port to the second connection port.

[0008] Further, the number of the flow guiding parts is four groups, and the distance between each group of flow guiding parts is the same; each group of flow guiding parts is composed of three flow guiding pieces, and the flow guiding pieces of each group of flow guiding parts are arranged in parallel and the distance between them is the same.

[0009] Further, the edge in the width direction of the flow guiding piece is parallel to the opening edge of the first connection port and is slightly lower than the opening of the first connection port; the edge in the length direction of the flow guiding piece is not higher than the diameter height formed by the edge of the second connection port along the axial extension direction.

[0010] Further, it further includes a first mounting portion and a second mounting portion. The first mounting portion is disposed outside the first connection port, and the second mounting portion is disposed outside the second connection port.

[0011] A heater includes a heating component, a fan component, and a noise-reducing air guiding structure. The first connection port of the noise-reducing air guiding structure is connected to the fan component through the first mounting portion, the second connection port is connected to the heating component through the second mounting portion, and the fan component includes a fan blade, a fan housing, and a fan bracket. The fan blade is disposed on the fan bracket.

[0012] Further, a part of the fan housing is nested into the first connection port of the air guiding cylinder to seal the connection between the fan housing and the first connection port of the air guiding cylinder; a part of the heating component is nested into the second connection port of the air guiding cylinder to seal the connection between the heating component and the second connection port of the air guiding cylinder.

[0013] Further, the heating component is a PTC heater.

[0014] Further, the fan housing is a cylindrical housing with openings at the front and rear. The two openings at both ends of the fan housing are respectively an air guiding end and a terminal end. The air guiding end is connected to the first connection port of the air guiding cylinder. A grille is provided on the air guiding end. The style of the grille is: a circle is provided in the center, and several spokes extend from the circle to the surroundings. One end of each spoke is connected to the circle, and the other end is connected to the frame of the air guiding end. The spokes incline leftward from the circle to the frame of the air guiding end and are arranged radially at equal intervals.

[0015] Further, the spokes of the grille are bent leftward from the circle to the frame of the air guiding end, and the arcs of the spokes are the same and are arranged at equal intervals.

[0016] The beneficial effects of the present utility model are as follows:

[0017] (1) A plurality of flow guiding vanes are provided in the air guiding cylinder to convert the spiral air flow into a parallel air flow. The parallel air flow passing through the heating component causes less resistance and less noise than the spiral air flow directly passing through the heating component, thereby achieving a noise reduction effect.

[0018] (2) The plurality of flow guiding vanes provided in the air guiding cylinder also serve as a reinforcing structure of the air guiding cylinder. The impact force generated by the air flow blowing onto the air guiding cylinder has less influence on the deformation of the air guiding cylinder, making the overall air guiding cylinder more stable and not easily vibrating, thereby achieving a noise reduction effect.

[0019] (3) The air guiding cylinder of the heater is a contraction structure from large to small, which converges the blown air flow, thereby making the wind power efficiency stronger and the heating effect more obvious.

[0020] (4) This noise-reducing air guiding structure is relatively simple and has low production costs.

[0021] For better understanding and implementation, the present utility model will be described in detail below with reference to the accompanying drawings. Description of the Drawings

[0022] Figure 1 It is a structural diagram of the noise reduction air guiding structure of the present utility model;

[0023] Figure 2 It is a rear view of the noise reduction air guiding structure of the present utility model;

[0024] Figure 3 It is a right view of the noise reduction air guiding structure of the present utility model;

[0025] Figure 4 It is a structural diagram of Embodiment 1 of the heater of the present utility model;

[0026] Figure 5 It is a structural diagram of Embodiment 2 of the heater of the present utility model;

[0027] Figure 6 It is a front view of the heater of the present utility model;

[0028] Figure 7 It is a rear view of the heater of the present utility model;

[0029] Figure 8 It is a right view of the heater of the present utility model.

[0030] Description of the Reference Numerals in the Drawings:

[0031] 1 - Air guiding cylinder;

[0032] 11 - First connection port;

[0033] 12 - Second connection port;

[0034] 13 - Hollow cavity;

[0035] 14 - Flow guiding part;

[0036] 15 - Flow guiding vane;

[0037] 16 - First mounting part;

[0038] 17 - Second mounting part;

[0039] 2 - Heating component;

[0040] 3 - Fan component;

[0041] 31 - Fan blade;

[0042] 32 - Fan housing;

[0043] 321 - Air guiding end;

[0044] 322 - end;

[0045] 33 - grille;

[0046] 34 - fan bracket. Specific embodiments

[0047] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0048] Embodiment 1:

[0049] The present utility model provides a noise - reducing air - guiding structure and a heater containing such a structure. As Figures 1 to 4 , the structure includes an air - guiding cylinder 1. One end of the hollow cavity 13 of the air - guiding cylinder 1 forms a first connection port 11, and the other end forms a second connection port 12. The first connection port 11 is used to connect the fan assembly 3, and the second connection port 12 is used to connect the heating assembly 2. Affected by production processes and production costs, most of the existing heating assemblies 2 are square or rectangular, while most of the fan assemblies 3 are circular. Therefore, preferably, the shape of the first connection port 11 is circular, and the shape of the second connection port 12 is square, which is conducive to the first connection port 11 and the second connection port 12 respectively corresponding to connect and install the fan assembly 3 and the heating assembly 2. The diameter length of the first connection port 11 is not less than the diagonal length of the second connection port 12, and the outer wall of the air - guiding cylinder 1 shrinks from the first connection port 11 to the second connection port 12 direction, so that the outer wall of the air - guiding cylinder 1 is in a "bowl" shape.

[0050] As Figures 1 to 2 , at least two groups of flow - guiding parts 14 are provided on the inner wall of the hollow cavity 13 of the air - guiding cylinder 1. Each group of flow - guiding parts 14 is composed of at least two vane - type flow - guiding pieces 15. Preferably, the number of the flow - guiding parts 14 is 4 groups, which are respectively arranged at the four vertices corresponding to the "cross" radiating from the origin of the axis of the hollow cavity 13 of the air - guiding cylinder 1, and the distance between the four groups of flow - guiding parts 14 is the same; each group of flow - guiding parts 14 is provided with 3 vane - type flow - guiding pieces 15, and the interval distance of each vane - type flow - guiding piece 15 is the same, with a total of twelve vane - type flow - guiding pieces 15.

[0051] As Figure 2 , the extending direction of the long side of each vane - type flow - guiding piece 15 is parallel to the central axis of the hollow cavity 13, the long side is tangent to the edge of the second connection port 12, and does not exceed the caliber formed by the edge of the second connection port 12 along the extending direction of the central axis, so as to ensure that the vane - type flow - guiding piece 15 does not block the square air duct path extending from the second connection port 12. As Figure 3 , the wide - side direction of the vane - type flow - guiding piece 15 is parallel to the radial direction of the opening section of the first connection port 11 and is slightly lower than the opening section. That is, the extending direction of the vane - type flow - guiding piece 15 is consistent with the air flow direction.

[0052] As Figure 1 and Figure 2, the air guide tube 1 includes a first mounting portion 16 and a second mounting portion 17 for connecting to the fan assembly 3 and the heating assembly 2 respectively. The first mounting portion 16 is disposed outside the first connection port 11, and the second mounting portion 17 is disposed outside the second connection port 12.

[0053] Such as Figure 4 , Figure 6 , Figure 7 , Figure 8 , the present utility model provides a heater, including the aforementioned noise reduction air guiding structure, a heating assembly 2 and a fan assembly 3. The first connection port 11 of the noise reduction air guiding structure is connected to the fan assembly 3 through the first mounting portion 16, and the second connection port 12 is connected to the heating assembly 2 through the second mounting portion 17 to form a complete heater. The fan assembly 3 includes a fan blade 31, a fan housing 32 and a fan bracket 34, and the fan blade 31 is disposed on the fan bracket 34.

[0054] Such as Figure 1 and Figure 4 , a stepped recess is provided at the edge of the first connection port 11 of the air guide tube 1 to accommodate the nested installation of the fan assembly 3. After installation, the fan housing 32 and the first connection port 11 of the air guide tube 1 are connected to form a relatively sealed state. The fan housing 32 is provided with a protruding mounting portion, which can be fixedly connected to the first mounting portion 16 on the air guide tube 1 by screws.

[0055] Similarly, a part of the heating assembly 2 is nested into the second connection port 12 of the air guide tube 1 and is fixedly connected to the second connection port 12 of the air guide tube 1 through the mounting portion on the heating assembly 2 to form a relatively sealed state. Preferably, the heating assembly 2 is a PTC heater.

[0056] To better achieve the air guiding and noise reduction effects, the heater provided by the present utility model is provided with a grille 33 at the fan housing 32 to first guide the spiral air flow blown out by the fan blade 31, and then perform secondary air guiding through the air guiding fins 15, so that the transition of the spiral air flow to a parallel air flow is smoother. Therefore, the fan housing 32 is a cylindrical housing with openings at both the front and the rear. The two openings at both ends of the fan housing 32 are a guiding end 321 and a terminal end 322 respectively, and the guiding end 321 is connected to the air guide tube 1. Specifically, reference can be made to Figure 4 , the style of the grille 33 is: a circle is provided in the center, and a number of straight spokes extend from the circle to the periphery. One end of the spoke is connected to the circle, and the other end is connected to the guiding end frame. The spokes are inclined to the left from the circle to the guiding end frame and are arranged radially at equal intervals. The rotation direction of the grille 33 should be the same as the rotation direction of the air flow generated by the fan blade 31, that is, rotate and radiate counterclockwise. Since the rotation direction of the fan blade 31 is clockwise, the generated air flow is a clockwise spiral air flow. Preferably, the number of the radial grilles 33 is 14.

[0057] Specifically, the 33 spokes of the grille are bent in the clockwise direction, and the overall shape of the 33 spokes of the grille is a clockwise spiral radial shape.

[0058] Embodiment 2:

[0059] As Figure 5 , a heater described in this embodiment, different from Embodiment 1, that is Figure 4 is that the spoke grille 33 of the fan housing 32 is curved, bent leftward from the circle to the air guiding end frame, with the same spoke curvature and arranged at equal intervals. The overall shape of the grille 33 is a spiral radial shape, and the spiral direction is the same as the air flow spiral direction.

[0060] The above specifically describes two preferred embodiments of the present utility model, but the creation of the present utility model is not limited to the described embodiments. Those skilled in the art can also make various equivalent variations or substitutions without violating the operation process and principles of the present utility model. These equivalent variations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A noise reduction air guiding structure, characterized in that, It includes an air duct (1). One end of the hollow cavity (13) of the air duct (1) forms a first connection port (11), and the other end forms a second connection port (12). At least two groups of flow guiding parts (14) are arranged on the inner wall of the hollow cavity (13). Each group of flow guiding parts (14) is composed of at least two flow guiding vanes (15). The length direction of each flow guiding vane (15) is parallel to the axial direction of the hollow cavity (13), and the width direction thereof is parallel to the radial direction of the hollow cavity (13).

2. The noise reduction air guiding structure according to claim 1, wherein: The first connection port (11) is circular in shape, the second connection port (12) is square in shape. The diameter length of the first connection port (11) is not less than the diagonal length of the second connection port (12). The hollow cavity (13) of the air duct (1) contracts from the first connection port (11) towards the second connection port (12).

3. The noise reduction air guiding structure according to claim 1, characterized in that: The number of the flow guiding parts (14) is four groups, and the intervals between each group of flow guiding parts (14) are the same. Each group of flow guiding parts (14) is composed of three flow guiding vanes (15). The flow guiding vanes (15) of each group of flow guiding parts (14) are arranged in parallel and have the same interval.

4. A noise reduction air guiding structure according to claim 1, characterized in that: The edges in the width direction of the flow guiding vane (15) are parallel to the opening edge of the first connection port (11) and are slightly lower than the opening of the first connection port (11). The edges in the length direction of the flow guiding vane (15) are not higher than the caliber height formed by the edge of the second connection port (12) along the axial extension direction.

5. The noise reduction air guiding structure according to any one of claims 1-4, characterized in that: It further includes a first mounting part (16) and a second mounting part (17). The first mounting part (16) is arranged outside the first connection port (11), and the second mounting part (17) is arranged outside the second connection port (12).

6. A heater, characterized in that, It includes a heating component (2), a fan component (3) and a noise reduction air guiding structure as described in claim 5. The first connection port (11) of the noise reduction air guiding structure is connected to the fan component (3) through the first mounting part (16). The second connection port (12) is connected to the heating component (2) through the second mounting part (17). The fan component (3) includes a fan blade (31), a fan housing (32) and a fan bracket (34). The fan blade (31) is arranged on the fan bracket (34).

7. A heater according to claim 6, characterized in that: Part of the fan housing (32) is nested into the first connection port (11) of the air duct (1) to seal the connection between the fan housing (32) and the first connection port (11) of the air duct (1). Part of the heating component (2) is nested into the second connection port (12) of the air duct (1) to seal the connection between the heating component (2) and the second connection port (12) of the air duct (1).

8. A heater according to claim 6, characterized in that: The heating component (2) is a PTC heater.

9. The heater according to claim 6, wherein: The fan housing (32) is a cylindrical housing with openings at the front and rear. The two openings at both ends of the fan housing (32) are the air guiding end (321) and the end (322) respectively. The air guiding end (321) is connected to the first connection port (11) of the air guiding cylinder (1). A grille (33) is provided on the air guiding end (321). The style of the grille (33) is as follows: a circle is provided in the center, and a number of spokes extend from the circle to the surroundings. One end of each spoke is connected to the circle, and the other end is connected to the border of the air guiding end (321). The spokes are inclined to the left from the circle to the border of the air guiding end (321) and are arranged radially at equal intervals.

10. A heater according to claim 9, characterized in that: The spokes of the grille (33) are bent to the left from the circle to the border of the air guiding end (321), and the arcs of the spokes are the same and are arranged at equal intervals.

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