CN217088349U

CN217088349U - Linear power amplifier

Info

Publication number: CN217088349U
Application number: CN202220523201.XU
Authority: CN
Inventors: 廖锡杰; 刘二朋; 谢云杰
Original assignee: Zhengzhou Huahang Technology Co ltd
Current assignee: Zhengzhou Huahang Technology Co ltd
Priority date: 2022-03-10
Filing date: 2022-03-10
Publication date: 2022-07-29
Anticipated expiration: 2032-03-10

Abstract

The utility model relates to a linear power amplifier, including the linear power amplifier main part that sets up inside the casing, the casing front side is provided with operating panel, operating panel is connected with the linear power amplifier main part, all be provided with the handle about the operating panel front side, the casing downside has seted up the opening, be provided with the connection pad in the opening, the side has seted up the cavity on the connection pad, the cavity inner wall is provided with the dust removal structure that absorbs water, the side is provided with the apron of fixing on the connection pad on the dust removal structure that absorbs water, apron and connection pad have all seted up the bleeder vent, so that the air gets into the casing through connection pad, dust removal structure that absorbs water and apron, the side is provided with the fan of fixing on the casing on the apron; the utility model has the advantages of prolonged service life and prevention of dust entering.

Description

Linear power amplifier

Technical Field

The utility model belongs to the technical field of power amplifier, concretely relates to linear power amplifier.

Background

In a communication system, a high-frequency modulated wave signal needs to be power-amplified to meet the requirement of transmission power, and then the high-frequency modulated wave signal is radiated to a space through an antenna, so that a receiver in a certain area can receive a satisfactory signal level, and the communication of an adjacent channel is not interfered, and the linear power amplifier has the function of power-amplifying the high-frequency modulated wave signal.

The patent of Chinese utility model with the publication number of CN213754448U discloses a radio frequency power amplifier convenient to mount and dismount, which comprises a shell, a display panel and an operation panel, wherein the front surface of the shell is provided with the display panel and the operation panel, the shell is provided with two support rings, the support rings are distributed around the periphery of the shell, the support rings are symmetrically distributed, a clamping plate is arranged below the support rings, the outer surface of the clamping plate is rotatably connected with a threaded rod, the threaded rod is mounted on a mounting plate in a threaded manner, the mounting plate is mounted on the lower end surface of the support ring through bolts, the outer end of the threaded rod is connected with a handle, and meanwhile, an active heat dissipation structure which is redesigned internally can be utilized to clean the panel of the shell, a jack area and a part of a top plate, which is easy to adhere dust and affects the operation, in real time; in the using process, the fan blades are driven by the motor to dissipate heat, water or other liquid is easy to enter the shell due to weather or using environment, the whole service life of the linear power amplifier is shortened after electrical elements inside the linear power amplifier are corroded by the water or the other liquid, and dust can directly enter the shell during heat dissipation and agglutinates and subsides inside the shell to influence the use of the linear power amplifier.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to overcome the disadvantages of the prior art and to provide a linear power amplifier with an extended lifetime and preventing dust from entering.

The technical scheme of the utility model as follows:

a linear power amplifier comprises a linear power amplifier main body arranged inside a shell, wherein an operation panel is arranged on the front side face of the shell and connected with the linear power amplifier main body, handles are arranged on the left and right sides of the front side face of the operation panel, an opening is formed in the lower side face of the shell, a connecting disc is arranged in the opening, a cavity is formed in the upper side face of the connecting disc, a water absorption and dust removal structure is arranged on the inner wall of the cavity, a cover plate fixed on the connecting disc is arranged on the upper side face of the water absorption and dust removal structure, air holes are formed in the cover plate and the connecting disc, so that air enters the shell through the connecting disc, the water absorption and dust removal structure and the cover plate, and a fan fixed on the shell is arranged on the upper side face of the cover plate;

the water absorption and dust removal structure comprises a dust removal layer B, two or more water absorption layers A positioned on the lower side surface of the dust removal layer B, and water absorption layers B positioned between the adjacent water absorption layers A;

a plurality of air outlets have all been seted up to the side about the casing, the air outlet is from shells inner wall downward sloping, shells inner wall is provided with the dust removal layer A with the air outlet laminating.

Furthermore, the outer edge of the connecting disc is provided with a plurality of arc-shaped plates, and the side face on the connecting disc is provided with a spring in contact with the shell.

Further, the connecting disc is provided with a spring groove for mounting a spring, and the cover plate is a circular plate and has a diameter smaller than the inner diameter of the spring groove.

Further, the annular groove that supplies the arc installation is seted up to the opening of casing, the casing downside corresponds with the arc and has seted up the arc opening, the arc opening with the annular groove intercommunication to make the arc pass through in the arc opening gets into the annular groove.

Further, the linear power amplifier main part downside is provided with the mounting panel, the mounting panel passes through branch to be fixed at shells inner wall.

Furthermore, the dedusting layer A and the dedusting layer B are both made of dedusting filter cloth.

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

1. the utility model adopts the dedusting layer B, the water absorbing layer A and the water absorbing layer B to form a water absorbing and dedusting structure, which is convenient for blocking and absorbing dust and water during air intake, blocking the dust at the air outlet through the dedusting layer A, and preventing water from entering the shell from the air outlet through the downward inclined air outlet, thereby prolonging the service life and preventing dust from entering;

2. the utility model adopts the arc-shaped plate, the arc-shaped opening and the annular groove to realize the connection of the connecting disc and the shell, and extrudes the connecting disc through the spring, thereby ensuring the convenient disassembly and assembly of the connecting disc;

in a word, the utility model has the advantages of increase of service life, dust prevention get into.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention shown in FIG. 1;

fig. 3 is an enlarged schematic view of a portion a of fig. 2 according to the present invention;

fig. 4 is a schematic bottom view of the structure of fig. 1 according to the present invention;

fig. 5 is a schematic top view of the connection pad of fig. 1 according to the present invention.

In the figure, the power amplifier comprises a shell 1, a shell 2, a handle 3, an operation panel 4, dust removing layers A and 5, an air outlet 6, a fan 7, a linear power amplifier main body 8, a mounting plate 9, an arc-shaped plate 10, a spring 11, a connecting disc 12, a water absorption and dust removal structure 121, dust removing layers B and 122, water absorption layers A and 123, water absorption layers B and 13, an annular groove 15, air holes 16, a cover plate 17 and a spring groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-5, a linear power amplifier comprises a linear power amplifier main body 7 arranged inside a casing 1, wherein an operation panel 3 is fixed on the front side surface of the casing 1 through bolts, the operation panel 3 is connected with the linear power amplifier main body 7, handles 2 are fixed on the left side and the right side of the front side surface of the operation panel 3 through bolts, an opening is arranged on the lower side surface of the casing 1, a connecting disc 11 is arranged in the opening, a cavity is arranged on the upper side surface of the connecting disc 11, a water absorption and dust removal structure 12 is arranged on the inner wall of the cavity, a cover plate 16 fixed on the connecting disc 11 through bolts is arranged on the upper side surface of the water absorption and dust removal structure 12, air holes 15 are arranged on the cover plate 16 and the connecting disc 11, so that air enters the casing 1 through the connecting disc 11, the water absorption and dust removal structure 12 and the cover plate 16, a fan 6 fixed on the casing 1 through bolts is arranged on the upper side surface of the cover plate 16, the fan 6 is an axial flow fan, eight air outlets 5 are formed in the left side surface and the right side surface of the shell 1, the air outlets 5 are inclined downwards from the inner wall of the shell 1, and a dust removal layer A4 attached to the air outlets 5 is arranged on the inner wall of the shell 1; when the linear power amplifier is used, the fan 6 is connected with a municipal power supply, the fan 6 is electrified to work to draw air to generate airflow, the air enters the shell 1 through the water absorption and dust removal structure 12, the water absorption and dust removal structure 12 absorbs water and removes dust to prevent water and dust from entering the shell 1, the influence on the normal work of the linear power amplifier main body 7 is avoided, the air entering the shell 1 is discharged through the air outlet 5, and therefore the linear power amplifier main body 7 is cooled, and in the cooling process, the air outlet 5 is inclined downwards, so that the water can be prevented from entering the shell 1, and the normal work of the linear power amplifier is ensured;

in this embodiment, dust removal structure 12 absorbs water includes dust removal layer B121, is located two layers A122 that absorb water of dust removal layer B121 downside and is located adjacent layer B123 that absorbs water between the layer A122 that absorbs water, the material of layer A122 that absorbs water is the cotton that absorbs water, the material of layer B that absorbs water is water-absorbing resin, in the course of the work, puts into the cavity with layer A122 that absorbs water and layer B123 layer one-layer, then places layer B121 that absorbs water on layer A122 upside, layer A122, layer B123 that absorbs water and dust removal layer B121 installation completion this moment, when the air flows, the air absorbs water through layer A122 and layer B123 that absorbs water, the air that absorbs water filters through layer B121 that absorbs water to prevent dust and moisture entering casing 1 in, prolong linear power amplifier's life.

In this embodiment, the outer edge of the connection disc 11 is integrally formed with four arc-shaped plates 9, the side surface of the connection disc 11 is provided with a spring 10 contacting with the casing 1, the connection disc 11 is provided with a spring groove 17 for mounting the spring 10, the cover plate 16 is a circular plate and has a diameter smaller than the inner diameter of the spring groove 17, the opening of the casing 1 is provided with an annular groove 13 for mounting the arc-shaped plate 9, the lower side surface of the casing 1 is provided with an arc-shaped opening corresponding to the arc-shaped plate 9, the arc-shaped opening is communicated with the annular groove 13, so that the arc-shaped plate 9 enters the annular groove 13 through the arc-shaped opening, when in use, the water-absorbing and dust-removing structure 12 is placed in the cavity, then the cover plate 16 is fixed on the connection disc 11 through bolts, the spring 10 is sleeved in the spring groove 17, and then the arc-shaped plate 9 on the connection disc 11 is placed in the annular groove 13 from the arc-shaped opening, at this time, the upper side of the connecting plate 11 is in contact with the housing 1 and the spring 10 is pressed, and then the connecting plate 11 is rotated so that the arc plate 9 enters the annular groove 13, the connecting plate 11 is released, and the spring 10 presses the connecting plate 11 so that the connecting plate 11 is fixed.

In this embodiment, linear power amplifier main part 7 downside is provided with mounting panel 8, mounting panel 8 passes through branch to be fixed at the casing 1 inner wall, and in the in-process of using, adopts branch to carry out fixed mounting panel 8 to carry out fixed linear power amplifier main part 7 through mounting panel 8, thereby guarantee the flow of air, made things convenient for the heat dissipation of linear power amplifier main part 7.

In this embodiment, the dedusting layer a4 and the dedusting layer B121 are both made of dedusting filter cloth, and the dedusting layer a4 and the dedusting layer B121 made of dedusting filter cloth are used for dedusting, so as to ensure the dedusting effect.

When the linear power amplifier is used, the linear power amplifier is lifted by the handle 2 and carried to a working position, when the linear power amplifier needs to work, operation data are input through the operation panel 3, the linear power amplifier main body 7 works, when heat dissipation is needed, the fan 6 works, air enters the shell 1 through the water absorption layer A122, the water absorption layer B123 and the dust removal layer B121, the heat of the linear power amplifier main body 7 is dissipated, when the water absorption layer A122, the water absorption layer B123 and the dust removal layer B121 need to be cleaned or replaced, the connecting disc 11 is rotated until the arc-shaped plate 9 is taken out from the arc-shaped opening, then the bolt of the fixing cover plate 16 is detached, the water absorption layer A122, the water absorption layer B123 and the dust removal layer B121 in the cavity are taken down layer by layer, and new water absorption layer A122, water absorption layer B123 and dust removal layer B121 are replaced.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a linear power amplifier, is including setting up the linear power amplifier main part inside the casing, the casing leading flank is provided with operating panel, operating panel and linear power amplifier main part are connected, all be provided with handle, its characterized in that about the operating panel leading flank: the lower side surface of the shell is provided with an opening, a connecting disc is arranged in the opening, the upper side surface of the connecting disc is provided with a cavity, the inner wall of the cavity is provided with a water-absorbing and dust-removing structure, the upper side surface of the water-absorbing and dust-removing structure is provided with a cover plate fixed on the connecting disc, the cover plate and the connecting disc are both provided with air holes, so that air enters the shell through the connecting disc, the water-absorbing and dust-removing structure and the cover plate, and the upper side surface of the cover plate is provided with a fan fixed on the shell;

2. The linear power amplifier of claim 1, wherein: the connecting disc outer fringe is provided with a plurality of arcs, the side is provided with the spring with the casing contact on the connecting disc.

3. The linear power amplifier of claim 2, wherein: the connecting plate is provided with a spring groove for installing a spring, and the cover plate is a circular plate and has a diameter smaller than the inner diameter of the spring groove.

4. The linear power amplifier of claim 3, wherein: the ring channel that supplies the arc installation is seted up to the opening of casing, the arc opening has been seted up with the arc correspondence to the casing downside, the arc opening with the ring channel intercommunication to make the arc pass through in the arc opening gets into the ring channel.

5. The linear power amplifier of claim 1, wherein: the lower side face of the linear power amplifier main body is provided with a mounting plate, and the mounting plate is fixed on the inner wall of the shell through a support rod.

6. The linear power amplifier of claim 1, wherein: the dedusting layer A and the dedusting layer B are both made of dedusting filter cloth.