CN219345093U

CN219345093U - Low noise blower

Info

Publication number: CN219345093U
Application number: CN202223597531.2U
Authority: CN
Inventors: 叶洪新
Original assignee: Dongguan Leifen Electronic Technology Co ltd
Current assignee: Dongguan Leifen Electronic Technology Co ltd
Priority date: 2022-12-26
Filing date: 2022-12-29
Publication date: 2023-07-14
Anticipated expiration: 2032-12-29

Abstract

The utility model belongs to the technical field of blowers, and particularly relates to a low-noise blower which comprises a handle shell and an annular bracket; the middle part of the annular support is provided with a vent hole, the inner side surface of the vent hole is provided with a sound insulation groove so that wool felt is communicated with the vent hole, the end part of the annular support is provided with a sound attenuation layer, and the sound attenuation layer comprises a honeycomb structure formed by arranging a plurality of structural units with the same shape according to a preset rule; each structural unit is provided with an airflow hole; the air flow can flow through the air flow holes of the structural units, and the air flow in the air channel can be uniformly distributed by each structural unit, so that the air flow in the air channel is uniformly distributed, the occurrence of high-frequency noise caused by uneven air flow direction distribution is avoided, and the noise of the blower is reduced; the sound insulation groove is arranged on the side face of the annular support, when the air flow passes through the vent holes of the annular support, the wool felt can further reduce the noise of the air flow, the secondary noise reduction is realized, and the noise reduction effect is improved.

Description

Low noise blower

Technical Field

The utility model belongs to the technical field of blowers, and particularly relates to a low-noise blower.

Background

Currently, blowers are often noisy in use, affecting the user's experience. Patent document with application number of CN202120170370.5 discloses a whole circle parcel formula amortization structure for hair-dryer, including the hair-dryer shell body, the inside high-speed motor that is provided with of hair-dryer shell body, be provided with on the hair-dryer shell body with the whole circle parcel formula amortization mechanism that the high-speed motor corresponds, whole circle parcel formula amortization mechanism specifically is cylindric silica gel lantern ring, the silica gel lantern ring inboard is provided with the circle boss, and the produced noise of fan during operation can be absorbed effectively to the circle boss, makes the whole circle parcel formula amortization mechanism of cover on the shell body establish have fine noise reduction effect. However, when the blower is operated, the effect of noise reduction treatment on the high-speed motor area is still insufficient, and when wind enters the blower from the air inlet, the direction of the sucked wind is changed after the wind is blocked, so that turbulent air flow is formed to generate noise, and the problem is to be solved.

Disclosure of Invention

The utility model aims to provide a low-noise blower and aims to solve the technical problem that noise is generated due to the fact that turbulent airflow is formed after wind sucked by the blower is blocked in the prior art.

In order to achieve the above object, a low noise blower according to an embodiment of the present utility model includes:

the middle part of the handle shell is provided with an air duct, the handle shell is provided with an air inlet and an air outlet which are respectively communicated with the air duct, and the inner side surface of the handle shell, which is close to the air outlet, is provided with a positioning groove; and

the annular support is arranged in the air duct and fixedly connected to the positioning groove, a wool felt is arranged between the outer side face of the annular support and the inner side face of the handle shell, a vent hole is formed in the middle of the annular support, a sound insulation groove is formed in the inner side face of the vent hole so that the wool felt is communicated with the vent hole, a silencing layer is arranged at the end of the annular support, and the silencing layer comprises a honeycomb structure formed by arranging a plurality of structural units with the same shape according to a preset rule; each of the structural units has an airflow hole that communicates with the vent hole.

Optionally, each structural unit has six side walls, and the six side walls are sequentially connected to form a structural unit with an equilateral hexagon structure.

Optionally, soundproof cotton for noise reduction is arranged on the side wall.

Optionally, a temperature sensor is arranged in the middle of the honeycomb structure; a heating plate and a PCB are also arranged in the air duct; the PCB board is respectively and electrically connected with the heating plate and the temperature sensor.

Optionally, a limit groove is formed in the inner side surface of the handle shell; the annular support is provided with a clamping column, and the clamping column is clamped in the limiting groove.

Optionally, the limit groove is communicated with the positioning groove; one end of the clamping column is clamped in the limiting groove, and the other end of the clamping column extends along the side face of the annular support to improve the strength of the annular support.

Optionally, a clamping groove is formed in the positioning groove, and the wool felt and the clamping groove are formed in the positioning groove.

Optionally, the sound insulation grooves are provided in plurality, and each sound insulation groove is uniformly distributed around the axis of the annular bracket.

Optionally, the handle housing comprises a first housing and a second housing; an elastic sheet is arranged on one side of the first shell, which is close to the second shell, and a clamping hole is formed in the elastic sheet; a clamping block is arranged on one side, close to the first shell, of the second shell, and is clamped in the clamping hole; the air duct is formed between the first shell and the second shell.

Optionally, a first mounting table is arranged on the first shell, and a second mounting table is arranged on the second shell; the filter screen is arranged on the outer side of the air inlet of the handle shell, the filter screen is provided with a mounting part, and the mounting part is clamped between the first mounting table and the second mounting table.

The above technical solutions in the low noise blower provided by the embodiments of the present utility model have at least one of the following technical effects: the air flow can flow through the air flow holes of the structural units, and the air flow in the air channel can be uniformly distributed by each structural unit, so that the air flow in the air channel is uniformly distributed, the occurrence of high-frequency noise caused by uneven air flow direction distribution is avoided, and the noise of the blower is reduced; the sound insulation groove is arranged on the side face of the annular support, when the air flow passes through the vent holes of the annular support, the wool felt can further reduce the noise of the air flow, the secondary noise reduction is realized, and the noise reduction effect is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a handle housing of a low noise blower according to an embodiment of the present utility model.

Fig. 2 is a cross-sectional view of a handle housing of a low noise blower provided in accordance with an embodiment of the present utility model.

Fig. 3 is a schematic structural view of a ring support of a low noise blower according to an embodiment of the present utility model.

Fig. 4 is a top view of a ring support for a low noise blower according to an embodiment of the present utility model.

Fig. 5 is a schematic structural diagram of a first housing of a low noise blower according to an embodiment of the present utility model.

Fig. 6 is a schematic structural diagram of a second housing of the low noise blower according to an embodiment of the present utility model.

Wherein, each reference sign in the figure:

10-handle shell 11-air duct 12-positioning groove

13-limit groove 14-clamping groove 20-annular support

21-vent hole 22-sound insulation groove 23-honeycomb structure

24-clamping column 30-wool felt 40-filter screen

100-first housing 101-second housing 102-elastic sheet

103-clamping hole 104-clamping block 105-first mounting table

106-second mounting stage 230-structural unit 231-airflow aperture.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to fig. 1 to 6 are exemplary and intended to illustrate embodiments of the present utility model and should not be construed as limiting the utility model.

In the description of the embodiments of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the embodiments of the present utility model and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the 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 embodiments of the present utility model, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

In the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

In one embodiment of the present utility model, as shown in fig. 1-6, a low noise blower is provided, comprising a handle housing 10 and a ring support 20.

The middle part of the handle shell 10 is provided with an air duct 11, the handle shell 10 is provided with an air inlet and an air outlet which are respectively communicated with the air duct 11, and the inner side surface of the handle shell 10, which is close to the air outlet, is provided with a positioning groove 12.

The annular support 20 is arranged in the air duct 11 and is fixedly connected in the positioning groove 12, a wool felt 30 is arranged between the outer side surface of the annular support 20 and the inner side surface of the handle shell 10, a vent hole 21 is formed in the middle of the annular support 20, a sound insulation groove 22 is formed in the inner side surface of the vent hole 21 so that the wool felt 30 is communicated with the vent hole 21, a sound-damping layer is arranged at the end part of the annular support 20, and the sound-damping layer comprises a honeycomb structure 23 formed by arranging a plurality of structural units 230 with the same shape according to a preset rule; each of the structural units 230 has an air flow hole 231, and the air flow hole 231 communicates with the vent hole.

In the embodiment of the utility model, the air flow can flow through the air flow holes 231 of the structural units 230, and the air flow in the air duct 11 can be regulated by uniformly distributing each structural unit 230, so that the air flow in the air duct 11 is uniformly distributed, the occurrence of high-frequency noise caused by uneven air flow direction distribution is avoided, and the noise of the blower is reduced; the side of the annular bracket 20 is provided with the sound insulation groove 22, and when the air flow passes through the vent holes of the annular bracket 20, the wool felt 30 can further reduce the noise of the air flow, realize secondary noise reduction and improve the noise reduction effect.

In another embodiment of the present utility model, as shown in fig. 4, each of the structural units 230 of the low noise blower has six sidewalls, which are sequentially connected to form the structural unit 230 in an equilateral hexagonal structure. Each of the structural units 230 in the equilateral hexagonal structure is uniformly arranged, and the barrier and isolation functions can be effectively achieved by the polygonal side length of the structural unit 230. It should be noted that the air flow holes 231 of the structural unit 230 may be other regular holes such as round holes, which may be specifically selected by those skilled in the art, and will not be described herein.

In another embodiment of the present utility model, the sidewall of the low noise blower is provided with soundproofing cotton for noise reduction. The soundproof cotton has a multi-fiber structure, sound waves generated by air flow are reflected by countless fibers, overlapped and collided with each other, and the sound wave energy is converted into heat energy, so that the sound wave intensity is weakened, and the soundproof cotton is well known to the person skilled in the art and is not described.

In another embodiment of the present utility model, the middle part of the honeycomb structure 23 of the low noise blower is provided with a temperature sensor; a heating plate and a PCB are also arranged in the air duct 11; the PCB board is connected with the heating plate and the temperature sensor respectively. The temperature sensor is to detect the room temperature through the temperature of the sucked air flow, if the room temperature is higher, the heating power of the heating plate is reduced by the PCB board driving heating plate, and if the room temperature is lower, the heating power of the heating plate is improved by the PCB board driving heating plate, and the principle does not relate to the improvement of a software program.

In another embodiment of the present utility model, as shown in fig. 2 and 5, the inner side of the handle housing 10 of the low noise blower is provided with a limit groove 13; the annular bracket 20 is provided with a clamping column 24, and the clamping column 24 is clamped in the limiting groove 13. The limit groove 13 is additionally arranged to improve the stability of the annular bracket 20, and avoid the situation that the annular bracket 20 rotates after being installed, so that the annular bracket 20 can be kept at a required installation position.

In another embodiment of the present utility model, the limit groove 13 of the low noise blower communicates with the positioning groove 12; one end of the clamping column 24 is clamped in the limiting groove 13, and the other end of the clamping column 24 extends along the side face of the annular support 20 to improve the strength of the annular support 20. The plurality of clamping columns 24 are arranged, and each clamping column 24 is uniformly arranged around the axis of the annular bracket 20, so that the overall structural strength of the annular bracket 20 is further improved; the number of the clamping grooves 14 corresponds to that of the clamping columns 24, so that the stability of the annular support 20 can be further improved, and the positioning is facilitated.

In another embodiment of the present utility model, as shown in fig. 2 and 5, the positioning groove 12 of the low noise blower is provided with a clamping groove 14, and the wool felt 30 and the clamping groove 14. The clamping groove 14 is added for positioning the wool felt 30, and other positions of the positioning groove 12 are attached to the side face of the annular support 20, so that the stability of the annular support 20 is improved.

In another embodiment of the present utility model, as shown in fig. 3, the sound insulation groove 22 of the low noise blower is provided in plurality, and each sound insulation groove 22 is uniformly distributed around the axis of the ring-shaped support 20, thereby improving the sound insulation effect, and the sound insulation groove 22 is circumferentially arranged, so that the sound insulation effect of the ring-shaped support 20 is better balanced.

In another embodiment of the present utility model, as shown in fig. 1, 5 and 6, the handle housing 10 of the low noise blower includes a first housing 100 and a second housing 101. An elastic sheet 102 is arranged on one side of the first shell 100 close to the second shell 101, and a clamping hole 103 is arranged on the elastic sheet 102; a clamping block 104 is arranged on one side of the second shell 101 close to the first shell 100, and the clamping block 104 is clamped in the clamping hole 103; an air duct 11 is formed between the first housing 100 and the second housing 101. The handle shell 10 adopts split structural design, and first casing 100 and second casing 101 adopt detachable connected mode to fix, and assembly and dismouting maintenance are convenient, and the practicality is strong.

In another embodiment of the present utility model, as shown in fig. 5 and 6, a first mounting table 105 is provided on a first housing 100 of the low noise blower, a second mounting table 106 is provided on a second housing 101, a filter screen 40 is provided outside an air inlet of a handle housing 10, a mounting portion is provided on the filter screen 40, the mounting portion is sandwiched between the first mounting table 105 and the second mounting table 106, and the filter screen 40 filters the sucked air flow to maintain the cleanliness in the air duct 11.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. A low noise blower, comprising:

2. A low noise blower according to claim 1, wherein: each structural unit is provided with six side walls, and the six side walls are sequentially connected to form the structural unit in an equilateral hexagon structure.

3. A low noise blower according to claim 2, wherein: and soundproof cotton for noise reduction is arranged on the side wall.

4. A low noise blower according to claim 1, wherein: a temperature sensor is arranged in the middle of the honeycomb structure; a heating plate and a PCB are also arranged in the air duct; the PCB board is respectively and electrically connected with the heating plate and the temperature sensor.

5. A low noise blower according to any one of claims 1-4, wherein: a limiting groove is formed in the inner side surface of the handle shell; the annular support is provided with a clamping column, and the clamping column is clamped in the limiting groove.

6. The low noise blower of claim 5, wherein: the limiting groove is communicated with the positioning groove; one end of the clamping column is clamped in the limiting groove, and the other end of the clamping column extends along the side face of the annular support to improve the strength of the annular support.

7. A low noise blower according to any one of claims 1-4, wherein: the locating groove is provided with a clamping groove, and the wool felt and the clamping groove are arranged in the locating groove.

8. A low noise blower according to any one of claims 1-4, wherein: the sound insulation grooves are formed in a plurality of mode, and the sound insulation grooves are evenly distributed around the axis of the annular support.

9. A low noise blower according to any one of claims 1-4, wherein: the handle housing comprises a first housing and a second housing; an elastic sheet is arranged on one side of the first shell, which is close to the second shell, and a clamping hole is formed in the elastic sheet; a clamping block is arranged on one side, close to the first shell, of the second shell, and is clamped in the clamping hole; the air duct is formed between the first shell and the second shell.

10. The low noise blower of claim 9, wherein: a first mounting table is arranged on the first shell, and a second mounting table is arranged on the second shell; the filter screen is arranged on the outer side of the air inlet of the handle shell, the filter screen is provided with a mounting part, and the mounting part is clamped between the first mounting table and the second mounting table.