CN213213303U

CN213213303U - Medium-high power multi-path low-noise switching power supply

Info

Publication number: CN213213303U
Application number: CN202021646556.5U
Authority: CN
Inventors: 张沁
Original assignee: Guangzhou Yingfan Electrical Technology Co ltd
Current assignee: Guangzhou Yingfan Electrical Technology Co ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2021-05-14
Anticipated expiration: 2030-08-10

Abstract

The utility model discloses a well high-power multichannel low noise switching power supply, comprising a box body and a box cover, box and case lid all include casing, micropore sound absorbing sheet layer, phenolic foam layer and inhale the cotton layer of sound, the rear end fixed mounting of box inner chamber has first fan, the air inlet end of first fan has the suction hood through the pipeline intercommunication, the air-out end of first fan has the draft hood through the pipeline intercommunication, the front end fixed mounting of box inner chamber has the second fan, the air inlet end of second fan has the filter mantle through the pipeline intercommunication, the air-out end of second fan has the exhaust hood through the pipeline intercommunication. The utility model discloses a micropore inhales sound sheet layer and phenolic foam layer and inhales the effect on the cotton layer of sound, and the propagation that can effective noise reduction reaches the purpose of low noise, has solved current switching power supply and by frequency control output voltage, will send a high frequency noise when control frequency has the deviation, and the use of giving people brings the problem of puzzlement.

Description

Medium-high power multi-path low-noise switching power supply

Technical Field

The utility model relates to a switching power supply technical field specifically is a well high-power multichannel low noise switching power supply.

Background

A switching power supply, also called switching power supply and switching converter, is a high-frequency power conversion device, which is a kind of power supply, and its function is to convert a level voltage into a voltage or a current required by a user terminal through different types of architectures, the input of the switching power supply is mostly an ac power supply (such as commercial power) or a dc power supply, and the output is mostly equipment requiring a dc power supply, such as a personal computer, and the switching power supply performs the voltage and current conversion between the two.

The applicant finds that at least the following technical problems exist in the prior art: the existing switching power supply controls output voltage by frequency, and when the control frequency has deviation, high-frequency noise can be generated, which brings trouble to people.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a well high-power multichannel low noise switching power supply to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a well high-power multichannel low noise switching power supply, includes box and case lid, box and case lid all include casing, micropore sound absorbing sheet layer, phenolic foam layer and inhale the cotton layer of sound, the rear end fixed mounting of box inner chamber has first fan, the air inlet end of first fan has the cover of breathing in through the pipeline intercommunication, the air-out end of first fan has the hood through the pipeline intercommunication, the front end fixed mounting of box inner chamber has the second fan, the air inlet end of second fan has the filter mantle through the pipeline intercommunication, the air-out end of second fan has the hood through the pipeline intercommunication.

Preferably, the front surface of the box body is provided with a wiring end, a circuit board is fixedly mounted at the middle end of the bottom of the inner cavity of the box body, and components are fixedly mounted at the top of the circuit board.

Preferably, the left end at box top has the case lid through hinge swing joint, the solid fixed ring of right side fixedly connected with of case lid, the upper end fixed mounting on box right side has the hasp.

Preferably, the inboard of casing passes through the outside of polyurethane glue bonding in micropore sound absorption plate layer, the inboard of micropore sound absorption plate layer passes through the outside of polyurethane glue bonding in phenolic foam layer, the inboard of phenolic foam layer passes through the outside of polyurethane glue bonding in inhaling the cotton layer of sound.

Preferably, the inner cavity of the filter cover is fixedly connected with a metal filter screen cover, an absorbent cotton filter layer and an active carbon adsorption layer from left to right in sequence.

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

1. the utility model discloses a micropore inhales sound sheet layer and phenolic foam layer and inhales the effect on the cotton layer of sound, and the propagation that can effective noise reduction reaches the purpose of low noise, has solved current switching power supply and by frequency control output voltage, will send a high frequency noise when control frequency has the deviation, and the use of giving people brings the problem of puzzlement.

2. The utility model discloses an effect of second fan, can inhale the metal screen panel through the filter mantle through the pipeline, the outside air after absorbent cotton filter layer and active carbon adsorption layer filter, and carry the inside of box through the exhaust hood, realize carrying out radiating ability to circuit board and components and parts, under the effect of first fan, can inhale the hot-air in the box through the suction hood through the pipeline, and carry the interior discharge of draft hood, thereby can accelerate box inside air circulation, reach the good purpose of radiating effect, switching power supply's normal work has been ensured.

Drawings

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

FIG. 2 is a schematic top sectional view of the case of the present invention;

FIG. 3 is a schematic cross-sectional view of the filter cover of the present invention;

fig. 4 is a schematic view of the structure of the coating layer of the present invention.

In the figure: 1. a box body; 101. a housing; 102. a microporous sound absorbing sheet layer; 103. a phenolic foam layer; 104. a sound absorbing cotton layer; 2. a terminal; 3. a filter housing; 4. a box cover; 5. a fixing ring; 6. locking; 7. a ventilation hood; 8. a first fan; 9. an air intake cover; 10. a circuit board; 11. an exhaust hood; 12. a second fan; 13. a component; 14. a metal screen cover; 15. a cotton wool filtering layer; 16. an activated carbon adsorption layer.

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.

In the description of the application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The utility model discloses a: the box body 1, the shell 101, the micropore sound absorption board layer 102, the phenolic foam layer 103, the sound absorption cotton layer 104, the wiring end 2, the filter cover 3, the box cover 4, the fixing ring 5, the lock catch 6, the ventilation cover 7, the first fan 8, the air suction cover 9, the circuit board 10, the exhaust cover 11, the second fan 12, the component 13, the metal filter screen cover 14, the absorbent cotton filter layer 15 and the active carbon adsorption layer 16 are all universal standard parts or parts known by a person skilled in the art, and the structure and the principle of the filter screen are known by a technical manual or a conventional experimental method.

Referring to fig. 1-4, a medium-high power multi-channel low noise switching power supply comprises a box body 1 and a box cover 4, wherein a wiring terminal 2 is arranged on the front surface of the box body 1, a circuit board 10 is fixedly installed at the middle end of the bottom of an inner cavity of the box body 1, an element 13 is fixedly installed at the top of the circuit board 10, the left end of the top of the box body 1 is movably connected with the box cover 4 through a hinge, a fixing ring 5 is fixedly connected with the right side of the box cover 4, a lock catch 6 is fixedly installed at the upper end of the right side of the box body 1, the box body 1 and the box cover 4 respectively comprise a shell 101, a microporous sound-absorbing plate layer 102, a phenolic foam layer 103 and a sound-absorbing cotton layer 104, the inner side of the shell 101 is bonded to the outer side of the microporous sound-absorbing plate layer 102 through polyurethane glue, the transmission of noise can be effectively reduced through the action of the microporous sound absorption board layer 102, the phenolic foam layer 103 and the sound absorption cotton layer 104, and the purpose of low noise is achieved, the rear end of the inner cavity of the box body 1 is fixedly provided with a first fan 8, the air inlet end of the first fan 8 is communicated with the air suction cover 9 through a pipeline, the air outlet end of the first fan 8 is communicated with the ventilation cover 7 through a pipeline, the front end of the inner cavity of the box body 1 is fixedly provided with a second fan 12, the air inlet end of the second fan 12 is communicated with the filter cover 3 through a pipeline, the inner cavity of the filter cover 3 is sequentially and fixedly connected with a metal filter screen cover 14, a cotton wool filter layer 15 and an active carbon adsorption layer 16 from left to right, the air outlet end of the second fan 12 is communicated with an exhaust hood 11 through a pipeline, and the external air filtered by the metal filter screen cover 14, the cotton filter layer 15 and the active carbon adsorption layer 16 can be, and carry the inside of box 1 through exhaust hood 11, realize carrying out radiating ability to circuit board 10 and components and parts 13, under the effect of first fan 8, can inhale the hot-air in the box 1 through the cover 9 that breathes in through the pipeline to carry and discharge in the draft hood 7, thereby can accelerate the inside air cycle of box 1, reach the good purpose of radiating effect, ensured switching power supply's normal work.

When the switch power supply is used, the transmission of noise can be effectively reduced through the action of the micropore sound absorption board layer 102, the phenolic foam layer 103 and the sound absorption cotton layer 104, the aim of reducing noise is achieved, the problem that the existing switch power supply outputs voltage by frequency control, when the control frequency has deviation, high-frequency noise can be emitted, and troubles are brought to the use of people is solved, through the action of the second fan 12, external air filtered by the metal filter screen cover 14, the absorbent cotton filter layer 15 and the activated carbon adsorption layer 16 can be sucked through the pipeline through the filter screen 3, and is conveyed to the inside of the box body 1 through the exhaust hood 11, the heat dissipation capacity of the circuit board 10 and the components 13 is realized, under the action of the first fan 8, hot air in the box body 1 can be sucked through the pipeline through the suction hood 9 and is conveyed to the ventilation hood 7 to be discharged, so that the internal air circulation of the box body 1 can be accelerated, the purpose of good heat dissipation effect is achieved, and normal work of the switching power supply is guaranteed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a well high-power multichannel low noise switching power supply, includes box (1) and case lid (4), its characterized in that: box (1) and case lid (4) all include casing (101), micropore sound absorption board layer (102), phenolic foam layer (103) and inhale cotton layer of sound (104), the rear end fixed mounting of box (1) inner chamber has first fan (8), the air inlet end of first fan (8) has suction hood (9) through the pipeline intercommunication, the air-out end of first fan (8) has ventilation hood (7) through the pipeline intercommunication, the front end fixed mounting of box (1) inner chamber has second fan (12), the air inlet end of second fan (12) has filter mantle (3) through the pipeline intercommunication, the air-out end of second fan (12) has exhaust hood (11) through the pipeline intercommunication.

2. A medium-high power multi-path low noise switching power supply according to claim 1, characterized in that: the front surface of the box body (1) is provided with a wiring end (2), the middle end of the bottom of the inner cavity of the box body (1) is fixedly provided with a circuit board (10), and the top of the circuit board (10) is fixedly provided with a component (13).

3. A medium-high power multi-path low noise switching power supply according to claim 1, characterized in that: the left end at the top of the box body (1) is movably connected with a box cover (4) through a hinge, a fixing ring (5) is fixedly connected to the right side of the box cover (4), and a lock catch (6) is fixedly mounted at the upper end of the right side of the box body (1).

4. A medium-high power multi-path low noise switching power supply according to claim 1, characterized in that: the inner side of the shell (101) is bonded to the outer side of the microporous sound absorption plate layer (102) through polyurethane glue, the inner side of the microporous sound absorption plate layer (102) is bonded to the outer side of the phenolic foam layer (103) through the polyurethane glue, and the inner side of the phenolic foam layer (103) is bonded to the outer side of the sound absorption cotton layer (104) through the polyurethane glue.

5. A medium-high power multi-path low noise switching power supply according to claim 1, characterized in that: the inner cavity of the filter cover (3) is fixedly connected with a metal filter screen cover (14), an absorbent cotton filter layer (15) and an active carbon adsorption layer (16) from left to right in sequence.