CN219993991U

CN219993991U - Centrifugal air supply device and bathroom fan heater

Info

Publication number: CN219993991U
Application number: CN202320907212.2U
Authority: CN
Inventors: 郭辉; 张空; 许伟伟
Original assignee: Simon Electric China Co Ltd
Current assignee: Simon Electric China Co Ltd
Priority date: 2023-04-21
Filing date: 2023-04-21
Publication date: 2023-11-10
Anticipated expiration: 2033-04-21

Abstract

The utility model relates to a centrifugal air supply device, which comprises a rotor driven by a motor, a volute with an air inlet and an air outlet, and an air outlet structure, wherein the volute is arranged outside the rotor, the air outlet of the volute is provided with the air outlet structure, the air outlet structure comprises a shell with an inlet and an outlet opposite to the inlet, the inlet of the shell is arranged at the air outlet of the volute, at least one guide plate is arranged between the inlet and the outlet of the shell, and the guide plate extends from the outlet to the inlet and is obliquely arranged. By adopting the centrifugal air supply device and the bathroom warm air blower, two guide plates are arranged in the air outlet structure, and when the bathroom warm air blower works, after the air is supplied to the air outlet structure through the volute, the air is supplied to the external environment after being rectified through the guide plates, so that the air quantity of the air supply is improved, and the noise of the air supply device when the bathroom warm air blower works is reduced.

Description

Centrifugal air supply device and bathroom fan heater

Technical Field

The utility model relates to the technical field of centrifugal fans, in particular to a centrifugal air supply device, and specifically relates to a bathroom warm air blower.

Background

The air supply structure of the bathroom fan heater generally adopts a multi-wing centrifugal fan, the air supply system generally utilizes kinetic energy generated by rotation of the fan to drive the air from an air inlet to an air outlet, and in the process, the rotating speed of an impeller driven by a motor is too high, so that the air flow of the fan in the process of sending the air to the air outlet is relatively turbulent in a traditional fan volute, various air flows collide at the side wall of the unsmooth volute to cause energy loss, the air output is reduced, meanwhile, noise is larger in the use process due to pressure fluctuation and the like at different positions when the wall of the volute is impacted and the air is sent out at the air outlet, whistle can even appear at a partition tongue, and users can be bothered when using the bathroom fan heater at home.

In order to reduce the turbulence and noise of the air outlet flow of the fan heater, a new air supply structure needs to be developed to reduce the turbulence of the air flow, improve the air quantity and reduce the noise.

Disclosure of Invention

The utility model aims at providing a centrifugal air supply device and a bathroom warm-air blower based on the prior art.

In order to achieve the above purpose, the centrifugal air supply device of the utility model comprises a rotor driven by a motor, a volute with an air inlet and an air outlet, and an air outlet structure, wherein the volute is arranged outside the rotor, the air outlet of the volute is provided with the air outlet structure, the air outlet structure comprises a shell with an inlet and an outlet opposite to the inlet, the inlet of the shell is arranged at the air outlet of the volute, at least one guide plate is arranged between the inlet and the outlet of the shell, and the guide plate extends from the outlet towards the inlet and is obliquely arranged.

Preferably, a first guide plate and a second guide plate are arranged in the shell at intervals with the first guide plate, the first guide plate is closer to the rotor than the second guide plate, and the first guide plate is not parallel to the second guide plate.

Preferably, a first included angle is formed between a projection line corresponding to the first guide plate and the air outlet direction of the air outlet of the volute, and the first included angle is in a range of 35-40 degrees; the projection line corresponding to the second guide plate and the air outlet direction of the air outlet of the volute form a second included angle, and the second included angle is in the range of 20-25 degrees.

Preferably, the distance from the junction point of the upper edge of the first deflector and the outer shell of the air outlet structure to the end point of the upper edge of the outer shell of the air outlet structure is 1/4-1/3 of the length l of the long side of the outer shell of the air outlet structure, and the junction point of the upper edge of the second deflector and the outer shell of the air outlet structure and the junction point of the upper edge of the first deflector and the outer shell of the air outlet structure are symmetrical about the center of the long side of the outer shell of the air outlet structure. After determining its basic direction and distance in top view.

Preferably, the ends of the first and second baffles extend beyond the inlet exterior of the housing; or,

the projection length of the first guide plate and the second guide plate along the air outlet direction of the air outlet of the volute is longer than the width of the shell.

Preferably, the first guide plate and the second guide plate are integrated with the shell, and the widths of the first guide plate and the second guide plate are 1-2 mm.

Preferably, the side surface of the shell is arc-shaped.

Preferably, the air supply device comprises a box body, and the rotor driven by the motor, the volute with the air inlet and the air outlet structure are all arranged in the box body.

Preferably, the air outlet structure is detachably arranged in the box body through a clamping mechanism, the clamping mechanism comprises a first clamping groove arranged in one of the box body and the outer shell of the air outlet structure and a clamping plate arranged in the other one of the box body and the outer shell of the air outlet structure, and the first clamping groove is matched with the clamping plate.

Preferably, the clamping structure comprises a second clamping groove arranged on the volute, and the clamping groove is clamped with the end part of the guide plate; the volute and the box body are integrated.

The utility model also provides a bathroom warm air blower which is mainly characterized by being the centrifugal air supply device.

By adopting the centrifugal air supply device and the bathroom warm air blower, two guide plates are arranged in the air outlet structure, and when the bathroom warm air blower works, after the air is supplied to the air outlet structure through the volute, the air is supplied to the external environment after being rectified through the guide plates, so that the air outlet disorder is obviously reduced, the air quantity of the air supply is improved, and the noise of the air supply device when the bathroom warm air blower works is reduced.

Drawings

Fig. 1 is a schematic structural view of a centrifugal blower according to the present utility model.

Fig. 2 is a schematic cross-sectional view of A-A in fig. 1.

Fig. 3 is a schematic structural diagram of the centrifugal blower of the present utility model when the air-out structure is not installed.

Fig. 4 is a schematic process diagram of the centrifugal blower of the present utility model when the air outlet structure is installed.

Fig. 5 is a bottom view of an air outlet structure in the centrifugal air supply device of the present utility model.

FIG. 6 is a schematic view of section B-B of FIG. 5.

Detailed Description

The following disclosure provides many different embodiments, or examples, to demonstrate different components of an embodiment of the present utility model. Specific examples of components and arrangements of components in the present disclosure are disclosed below to simplify the present disclosure. Of course, these specific examples are not intended to limit the disclosure.

As shown in fig. 1 to 6, an embodiment of the centrifugal air supply device provided by the utility model is particularly suitable for a multi-wing bathroom warm air blower. The air supply device comprises a box body 1, a rotor 3 driven by a motor 4, a volute 2 with an air inlet and an air outlet 8, and an air outlet structure 5, wherein the rotor 3 driven by the motor 4, the volute 2 with the air inlet and the air outlet 8 and the air outlet structure 5 are all arranged in the box body 1, and the volute 2 is composed of an arc section and a plurality of straight sections designed by volute molded lines. As can be seen from fig. 3 and 4, in the present embodiment, the volute 2 is disposed outside the rotor 3, and the volute 2 and the casing 1 are integrated, but may be processed separately.

As shown in fig. 1, the air outlet structure 5 is disposed at the air outlet 8 of the volute 2, so that the bathroom fan heater is suitable for sucking air from the outside, the sucked air is rotated by the rotor blades to provide kinetic energy to drive the air flow to pass through the volute 2, and the volute 2 supplies air to the outside environment through the guide plate after supplying air to the air outlet.

The air outlet structure 5 comprises a housing having an inlet and an outlet opposite to the inlet, the inlet of the housing being arranged at the air outlet 8 of the volute 2. Two guide plates are arranged between the inlet and the outlet of the shell, a first guide plate 6 and a second guide plate 7 are arranged at intervals with the first guide plate 6, the first guide plate 6 is closer to the rotor 3 than the second guide plate 7, the first guide plate 6 and the second guide plate 7 extend from the outlet to the inlet and are obliquely arranged, and the first guide plate 6 and the second guide plate 7 are not parallel.

The top of first guide plate 6 and second guide plate 7 all flushes with the upper edge of the shell of air-out structure, and the direction of wind can be guided in the setting of guide plate, makes the streamline distribution of air-out more even, leads to the separation vortex to reduce in the export section can showing when the air supply comes out to the energy loss that the wind was brought owing to the impact of the export section shape of not enough smooth when the air supply is reduced, thereby makes noise reduction, and the air output increases.

Furthermore, as is evident from fig. 3 and 6, the ends of the first deflector 6 and the second deflector 7 extend beyond the inlet outside of the housing, or the projection lengths h2, h1 of the first deflector 6 and the second deflector 7 in the air outlet direction of the air outlet of the volute are longer than the width h of the housing. Namely, the guide plate is required to penetrate into the air outlet of the volute, so that the air outlet structure can be assembled on the volute through the guide plate.

Specifically, a first included angle M is formed between a projection line corresponding to the first deflector 6 and an air outlet direction of an air outlet of the volute, a second included angle N is formed between a projection line corresponding to the second deflector 7 and the air outlet direction of the air outlet of the volute, and the first included angle and the second included angle are acute angles, specifically, the first included angle is in a range of 35 ° to 40 °. The second included angle is in the range of 20-25 degrees.

The distance from the junction point C between the first deflector and the upper edge of the outer shell of the air outlet structure to the end point D of the upper edge of the outer shell of the air outlet structure is 1/4-1/3 of the long side length l of the outer shell of the air outlet structure, and the junction point E between the second deflector and the upper edge of the outer shell of the air outlet structure and the junction point C between the first deflector and the upper edge of the outer shell of the air outlet structure are symmetrical about the long side center (namely, 1/2 l) of the outer shell of the air outlet structure or can have errors of 6-8 mm.

As shown in fig. 4, the first baffle 6 and the second baffle 7 are integrally formed with the housing, and the width of the first baffle 6 and the second baffle 7 is 1 to 2mm.

As can be seen from fig. 2 and 4, in this embodiment, the sides of the housing are curved, so that streamlines reduce impact.

In this embodiment, the air outlet structure 5 is detachably disposed in the box 1 through a clamping mechanism, the clamping mechanism includes a first clamping groove 12 disposed on a housing of the air outlet structure 5 and a clamping plate 11 disposed on the box 1, and the first clamping groove 12 is matched with the clamping plate 11, so that the housing and the box can be clamped.

Further, the clamping structure further comprises a second clamping groove 9 and a second clamping groove 10 which are arranged on the volute, the second clamping groove 9 is clamped with the end part of the second guide plate, and the second clamping groove 10 is clamped with the end part of the first guide plate.

Through the clamping structure, the air outlet structure can be mounted in the box body and the volute and can be detached from the box body and the volute.

By adopting the centrifugal air supply device and the bathroom warm air blower, two guide plates are arranged in the air outlet structure, and when the bathroom warm air blower works, after the air is supplied to the air outlet structure through the volute, the air is supplied to the external environment after being rectified through the guide plates, so that the air quantity of the air supply is improved, and the noise of the air supply device when the bathroom warm air blower works is reduced.

In the description of the present utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify 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 therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a 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.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In this specification, the utility model has been described with reference to specific embodiments thereof. It will be apparent, however, that various modifications and changes may be made without departing from the spirit and scope of the utility model. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.

Claims

1. The utility model provides a centrifugal air supply arrangement, its characterized in that includes motor drive's rotor, has spiral case, the air-out structure of air intake and air outlet, the spiral case set up the outside of rotor the air outlet department of spiral case set up the air-out structure, the air-out structure including have the import with the export shell of import relative, the import of shell set up the air outlet department of spiral case, import and export of shell between set up at least one guide plate, the guide plate follow export orientation the import extend and be the slope setting.

2. The centrifugal blower of claim 1, wherein a first baffle and a second baffle are disposed in the scroll casing and spaced apart from the first baffle, the first baffle being closer to the rotor than the second baffle, the first baffle being non-parallel to the second baffle.

3. The centrifugal air supply device according to claim 2, wherein a first included angle is formed between a projection line corresponding to the first guide plate and an air outlet direction of an air outlet of the volute, and the first included angle is in a range of 35 degrees to 40 degrees; a second included angle is formed between a projection line corresponding to the second guide plate and the air outlet direction of the air outlet of the volute, and the second included angle is in the range of 20-25 degrees; and/or the number of the groups of groups,

the distance from the junction point of the upper edge of the first guide plate and the outer shell of the air-out structure to the end point of the upper edge of the outer shell of the air-out structure is 1/4-1/3 of the length of the long side of the outer shell of the air-out structure, and the junction point of the upper edge of the second guide plate and the outer shell of the air-out structure, the junction point of the upper edge of the first guide plate and the upper edge of the outer shell of the air-out structure are symmetrical about the center of the long side of the outer shell of the air-out structure.

4. The centrifugal blower of claim 2, wherein ends of the first and second deflectors extend beyond an inlet exterior of the housing; or,

5. The centrifugal blower according to claim 4, wherein the first and second guide plates are integrally formed with the housing, and the first and second guide plates have a width of 1 to 2mm.

6. The centrifugal blower of claim 1, wherein the side of the housing is arcuate.

7. The centrifugal blower according to claim 1, wherein the blower includes a housing, and the motor-driven rotor, the volute having the air inlet and the air outlet, and the air outlet structure are all disposed in the housing.

8. The centrifugal blower according to claim 7, wherein said air-out structure is detachably disposed in said housing by a clamping mechanism, said clamping mechanism including a first clamping groove disposed in one of said housing and said air-out structure housing and a clamping plate disposed in the other of said housing and said air-out structure housing, said first clamping groove being mated with said clamping plate.

9. The centrifugal blower according to claim 8, wherein the engaging mechanism includes a second engaging groove provided in the scroll casing, the engaging groove being engaged with an end portion of the deflector; the volute and the box body are integrated.

10. A bathroom warm-air drier, characterized by being a centrifugal air supply device as claimed in any one of claims 1 to 9.