CN219993866U - Silencer for reducing noise of compressor - Google Patents

Abstract

The utility model discloses a silencer for reducing noise of a compressor, which belongs to the technical field of medical appliances and comprises an upper shell and a lower shell, wherein the upper shell and the lower shell are mutually spliced to form a sealed silencing cavity; the utility model adopts a mode of guiding and adding specific impeller disturbance to output pulse type surge current into continuous air current with low fluctuation, thereby greatly reducing air current noise generated by air current instability.

Description

Silencer for reducing noise of compressor

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a silencer for reducing noise of a compressor.

Background

The medical compression type atomizer has the defects that the common deviation noise of the medical compression type atomizer is high, the compression type noise comprises a plurality of aspects, the airflow fluctuation noise is a huge factor for generating noise, but the medical compression type atomizer is not further improved in the aspect of noise due to the fact that the ultrasonic mesh type atomizer is marketed. Although ultrasonic mesh atomizers are less noisy, compression atomizers are superior to mesh ultrasonic atomizers in atomizing particles, technical cost, service life, convenience, etc. In recent years, some high-end markets have been replaced by mesh ultrasonic atomizers because compression atomizer noise has not been addressed.

Based on this, the present utility model has devised a muffler for reducing noise of a compressor to solve the above-mentioned problems.

Disclosure of Invention

The present utility model is directed to a muffler for reducing noise of a compressor, and aims to solve the above-mentioned problems of the related art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a muffler for reducing compressor noise, includes casing and lower casing, go up the casing with casing peg graft each other down constitutes sealed amortization cavity, go up the casing top and seted up with the communicating gas outlet of amortization cavity, lower casing bottom has seted up with the communicating air inlet of amortization cavity, the impeller main part is installed in the rotation of the axial lead position in the amortization cavity, the axis of rotation of impeller main part with the coincidence of amortization cavity axial lead, including a plurality of evenly circumference distribution's impeller piece in the axis of rotation of impeller main part, the impeller piece is the platy and along the axial extension of impeller main part axis of rotation fixed.

Preferably, a flow guiding mechanism is arranged in the lower shell, the flow guiding mechanism comprises a flow guiding blade with a circumference fixed at an inner opening of the air inlet, and air flow enters the lower shell from the air inlet and passes through the flow guiding blade to form spiral air flow with an inclination angle.

Preferably, a plurality of diversion She Zhouxiang positions are fixed with a lower shaft sleeve together, a column hole is formed in the top of the lower shaft sleeve, and the bottom end of the impeller main body rotating shaft is rotatably sleeved in the column hole of the lower shaft sleeve.

Preferably, the bottom of the lower shaft sleeve is round, and the inner opening of the air inlet is horn-shaped.

Preferably, an upper shaft seat with a downward opening is arranged at the axial center position of the inner top of the upper shell, the upper shaft seat is fixed on the inner wall of the upper shell through a seat connecting rod with a horizontally fixed side wall, and the top end of the impeller main body rotating shaft is rotatably sleeved in the upper shaft seat.

Preferably, the impeller body comprises three, four, six and eight blades with multiple groups of specifications and sizes according to the number of impeller blades.

Preferably, the upper shell and the lower shell are provided with stepped plug-in table tops for improving plug-in sealing performance, and the plug-in table tops are connected and sealed through bonding.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model can obviously improve the noise problem of the original compressor air flow by utilizing a simple silencer main body on the premise of not greatly increasing the cost;

2. the utility model adopts a mode of guiding and adding specific impeller disturbance to output pulse type surge current into continuous air current with low fluctuation, thereby greatly reducing air current noise generated by air current instability.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is 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 view of the front side view angle structure of the present utility model;

FIG. 2 is a partial exploded view of the present utility model;

FIG. 3 is a schematic view of the internal structure of the lower housing;

FIG. 4 is a schematic view of the internal structure of the upper housing;

FIG. 5 is a schematic view of the structure of the impeller body of each specification;

fig. 6 is a schematic view of the structure of the present utility model.

In the drawings, the list of components represented by the various numbers is as follows:

the device comprises an upper shell 1, a lower shell 2, an air inlet 3, an air outlet 4, an impeller main body 5, a lower shaft sleeve 6, a guide vane 7, an upper shaft seat 8 and a seat connecting rod 9.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples

Referring to fig. 1-6, the present utility model provides a technical solution:

the silencer for reducing noise of a compressor comprises an upper shell 1 and a lower shell 2, wherein the upper shell 1 and the lower shell 2 are mutually spliced to form a sealed silencing cavity, an air outlet 4 communicated with the silencing cavity is formed in the top of the upper shell 1, an air inlet 3 communicated with the silencing cavity is formed in the bottom of the lower shell 2, an impeller main body 5 is rotatably arranged at the position of an axial lead in the silencing cavity, the axis of rotation of the impeller main body 5 coincides with the axis of the silencing cavity, and a plurality of impeller blades which are uniformly distributed circumferentially are arranged on the axis of rotation of the impeller main body 5, and are in a flat plate shape and fixedly extend along the axial direction of the axis of rotation of the impeller main body 5;

when the compressor is in operation, the air inlet 3 is connected to the air outlet pipe of the compressor, the air outlet end of the silencer is connected to the air outlet end of the atomizer, when compressed air enters the cavity of the shell through the air inlet, the impeller blades are impacted to rotate at a high speed, then the compressed air is discharged through the air outlet for atomization, after the impeller blades are impacted, irregular sound generated by stopping vibration of the silicon back film of the compressor cylinder is converted into regular continuous airflow sound, noise generated by the compressor is greatly reduced, air flow blown out by the compressor is surge flow with larger fluctuation, the airflow noise is larger, after entering the silencing cavity, a part of energy is firstly used for driving the impeller main body 5 to rotate, and the vertical impeller blades of the impeller main body 5 break up the surge flow air flow and form uniform continuous airflow when rotating at a high speed, so that the airflow noise is reduced.

The lower shell 2 is internally provided with a flow guiding mechanism, the flow guiding mechanism comprises flow guiding vanes 7, the circumference of which is fixed at the inner opening of the air inlet 3, and air flow enters the lower shell 2 from the air inlet 3 and passes through the flow guiding vanes 7 to form spiral air flow with an inclined angle;

in operation, since the impeller blades of the impeller body 5 are parallel to the axial direction, if the surge air flow is mostly completely parallel to the axial direction of the impeller body 5, the efficiency of driving the impeller body 5 to rotate is poor, and the starting process is long, so that in order to quickly increase the rotation response speed of the impeller body 5, the air flow passing through the air inlet 3 is provided with the spiral guide vanes 7, the axial inclination angle of the surge air flow is increased after passing through the guide vanes 7, and the surge air flow is in a surge shape, at this time, the impeller can quickly bear rotation, a power source is provided for continuous rotation of the impeller body 5, the rotation of the impeller body 5 is continuous, and therefore the fluctuation of the air flow output by the impeller body is greatly reduced, and the air flow is changed into a continuous air flow with small fluctuation from the pulse air flow with interval.

The axial positions of the plurality of guide vanes 7 are fixedly provided with a lower shaft sleeve 6, the top of the lower shaft sleeve 6 is provided with a column hole, and the bottom end of the rotating shaft of the impeller main body 5 is rotatably sleeved in the column hole of the lower shaft sleeve 6;

wherein the bottom of the lower shaft sleeve 6 is round, and the inner opening of the air inlet 3 is horn-shaped;

during operation, the lower shaft sleeve 6 that sets up provides the rotation supporting point of bottom for impeller main part 5, and the bottom button head of lower shaft sleeve 6 and the loudspeaker opening of air inlet 3 can let the asthma flow not single-point direct flushing when getting into a plurality of water conservancy diversion leaves 7 in amortization air cavity, also can not produce new noise because of the lower shaft sleeve 6 that sets up, and the lower extreme button head of lower shaft sleeve 6 still can be with the asthma flow of axle center point to dispersing all around to get into between the adjacent water conservancy diversion leaf 7 of different positions and carry out the water conservancy diversion action.

An upper shaft seat 8 with a downward opening is arranged at the axial center position of the inner top of the upper shell 1, the upper shaft seat 8 is fixed on the inner wall of the upper shell 1 through a seat connecting rod 9 with a horizontally fixed side wall, and the top end of a rotating shaft of the impeller main body 5 is rotatably sleeved in the upper shaft seat 8;

when the impeller is in operation, the upper shaft seat 8 is used for limiting the rotation of the top end of the rotation shaft of the impeller main body 5, and the air flow processed by the impeller main body 5 is not required to be guided, so that the upper shaft seat 8 is supported by the seat connecting rod 9.

Examples

This embodiment differs from embodiment 1 in that:

wherein, the impeller main body 5 comprises three leaves, four leaves, six leaves and eight leaves with a plurality of groups of specification sizes according to the number of impeller blades;

the upper shell 1 and the lower shell 2 are provided with stepped plug-in table tops for improving plug-in sealing performance, and the plug-in table tops are connected and sealed through bonding.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean 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.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims (7)

1. The utility model provides a muffler for reducing compressor noise, includes last casing (1) and lower casing (2), its characterized in that: the utility model discloses a silencer, including casing (1), impeller main body (5) and impeller main body (5) are installed in the rotation of axial lead position in amortization cavity, impeller main body (5) include a plurality of evenly circumferentially distributed's impeller piece in the axis of rotation, the impeller piece is the axial extension of impeller main body (5) axis of rotation fixed in the shape of a flat board with follow on the casing (2) of casing (2) peg graft each other and constitute sealed amortization cavity, go up casing (1) top and offered with the communicating gas outlet (4) of amortization cavity, casing (2) bottom down.

2. A muffler for reducing compressor noise as defined in claim 1, wherein: the lower shell (2) is internally provided with a flow guiding mechanism, the flow guiding mechanism comprises flow guiding vanes (7) which are circumferentially fixed at the inner opening of the air inlet (3), and air flow enters the lower shell (2) from the air inlet (3) and passes through the flow guiding vanes (7) to form spiral air flow with an inclined angle.

3. A muffler for reducing compressor noise as defined in claim 2, wherein: the axial positions of the plurality of guide vanes (7) are jointly fixed with a lower shaft sleeve (6), a column hole is formed in the top of the lower shaft sleeve (6), and the bottom end of the rotating shaft of the impeller main body (5) is rotatably sleeved in the column hole of the lower shaft sleeve (6).

4. A muffler for reducing compressor noise as defined in claim 3, wherein: the bottom of the lower shaft sleeve (6) is round, and the inner opening of the air inlet (3) is horn-shaped.

5. A muffler for reducing compressor noise as defined in claim 1, wherein: an upper shaft seat (8) with a downward opening is arranged at the axial center position of the inner top of the upper shell (1), the upper shaft seat (8) is fixed on the inner wall of the upper shell (1) through a seat connecting rod (9) with a horizontally fixed side wall, and the top end of a rotating shaft of the impeller main body (5) is rotatably sleeved in the upper shaft seat (8).

6. A muffler for reducing compressor noise as defined in any one of claims 1-5, wherein: the impeller main body (5) comprises three blades, four blades, six blades and eight blades with a plurality of specifications and sizes according to the number of impeller blades.

7. A muffler for reducing compressor noise as defined in any one of claims 1-5, wherein: the upper shell (1) and the lower shell (2) are provided with stepped plug-in table tops for improving plug-in sealing performance, and the plug-in table tops are connected and sealed through bonding.