CN220693112U - Over-temperature protection device of power amplifier - Google Patents
Over-temperature protection device of power amplifier Download PDFInfo
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- CN220693112U CN220693112U CN202322415038.2U CN202322415038U CN220693112U CN 220693112 U CN220693112 U CN 220693112U CN 202322415038 U CN202322415038 U CN 202322415038U CN 220693112 U CN220693112 U CN 220693112U
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- power amplifier
- protection device
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- device base
- temperature
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- 238000001816 cooling Methods 0.000 claims abstract description 27
- 238000001914 filtration Methods 0.000 claims abstract description 9
- 238000000926 separation method Methods 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims description 2
- 230000001012 protector Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 10
- 230000017525 heat dissipation Effects 0.000 description 19
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The application provides an over-temperature protection device of a power amplifier, which relates to the technical field of protection devices of power amplifiers and comprises a protection device main body and a filtering structure, wherein the protection device main body comprises a device base, air inlets are formed in two ends of the device base, four air outlets are formed in the center of the device base, flow guide frames are formed in the tops of two sides of the device base, and four cooling fans are arranged between the two flow guide frames; the filtering structure comprises a filter screen, wherein both sides of the bottom of the filter screen are provided with brackets, each bracket comprises a mounting seat, and both ends of each mounting seat are provided with guide plates; the technical key points are as follows: through utilizing four radiator fan to discharge the high temperature air in the power amplifier, form the air-out passageway with the help of guide plate and mount pad on two supports, make high temperature air in the center department on long limit along rather than long limit vertically direction motion, and outside air carries the inside to the power amplifier from the outside of two supports, can shunt the air of different temperatures, guarantees the radiating effect.
Description
Technical Field
The utility model relates to the technical field of power amplifier protection devices, in particular to an over-temperature protection device of a power amplifier.
Background
A power amplifier refers to an amplifier that can produce maximum power output to drive a load under a given distortion rate. The power amplifier plays a role of a pivot for organization and coordination in the whole sound system, and to a certain extent, the power amplifier is a high-gain high-power amplifier which can output high-power pulse wave power in a bandwidth range and can play a role of controlling whether the whole sound system can provide good sound quality output or not. However, in the use of the pulse power amplifier, since the pulse power amplifier is a high power amplifier, and further, a phenomenon of high temperature is more easily generated inside the use of the pulse power amplifier, it is necessary to ensure that the heat dissipation operation is performed when the pulse power amplifier is used.
The over-temperature protection device of the pulse power amplifier with the publication number of CN217694158U drives the third rotating shaft to rotate through the motor, drives all rotating plates to rotate in the heat dissipation channel, further effectively enables a fan in the power amplifier to blow air in the power amplifier to be emitted to the outside of the heat dissipation channel, promotes hot air in the power amplifier to move to the outside from the power amplifier through the rotating plates to rotate again, is more beneficial to dispersing high-temperature air in the power amplifier to the outside, improves the over-temperature protection function of the power amplifier, is more beneficial to improving the use effect of the power amplifier, and further improves the long-term service life of the power amplifier.
However, in the process of implementing the above technical solution, the following technical problems are found in the above technical solution:
when the existing pulse power amplifier over-temperature protection device rotates through a motor control fan, the rotating plate is controlled to rotate by means of the gear, the chain wheel and the chain, auxiliary air flows, and the radiating effect is guaranteed, but because the rotating plate continuously rotates in the radiating channel, internal air has a trend of flowing outwards, and external low-temperature air is not easy to enter the amplifier from the channel, so that internal high-temperature gas is discharged, and the radiating effect is poor.
Disclosure of Invention
In order to overcome the defect that the existing over-temperature protection device of the pulse power amplifier continuously rotates in a radiating channel due to the fact that a rotating plate is arranged in the radiating channel, air in the auxiliary power amplifier flows outwards, but external low-temperature air is not easy to enter the interior of the amplifier from the channel, so that internal high-temperature air is discharged, and the radiating effect is poor.
The technical scheme adopted by the embodiment of the application for solving the technical problems is as follows:
the over-temperature protection device of the power amplifier comprises a protection device main body and a filtering structure, wherein the protection device main body is used for performing heat dissipation operation in the power amplifier;
the filtering structure is arranged at the bottom of the main body of the protection device;
the protection device main body is pumped from two sides of the bottom of the power amplifier to the inside, and is exhausted from the center of the inside of the power amplifier to the bottom.
In one possible implementation manner, the protection device main body comprises a device base, air inlets are formed in two ends of the device base, four air outlets are formed in the center of the device base, flow guide frames are formed in the tops of two sides of the device base, four cooling fans are arranged between the two flow guide frames, the four cooling fans are connected to the top of the device base in an assembled mode and are respectively located right above the four air outlets, and the device base is connected to the bottom of the power amplifier in an assembled mode.
In one possible implementation manner, the two diversion frames comprise separation strips, the top ends of the separation strips are integrally formed with diversion strips, the separation strips are vertical to the device base, and the top parts of the diversion strips incline from the center to two sides.
In one possible implementation manner, the same temperature control switch is arranged between the four heat dissipation fans, the temperature control switches are connected to the top of the device base in an assembling manner, the circuits inside the four heat dissipation fans are all communicated with the temperature control switches, and the temperature control switches control the four temperature control switches to work when the temperature inside the power amplifier rises.
In one possible implementation manner, the filtering structure comprises a filter screen, wherein the two sides of the bottom of the filter screen are respectively provided with a bracket, the filter screen is connected to the bottom of the device base in an assembling manner, and four air outlets and two air inlets inside the device base are plugged.
In one possible implementation manner, the bracket comprises a mounting seat, both ends of the mounting seat are provided with guide plates, and the top of the mounting seat is welded and fixed with the bottom of the filter screen.
In one possible implementation manner, two guide plates on one mounting seat are obliquely arranged and are mutually symmetrical, two guide plates on the same end of the two mounting seats are obliquely arranged from two sides to the center, and an air outlet channel is formed between the two brackets.
In summary, the present utility model includes at least one of the following beneficial technical effects:
1. the high-temperature air in the power amplifier is discharged from four air outlets to the outside by utilizing four cooling fans, and an air outlet channel is formed by virtue of the guide plates and the mounting seats on the two brackets, so that the high-temperature air moves along the direction perpendicular to the long sides of the guide plates at the center of the long sides, the outside air is conveyed to the inside of the power amplifier from the outer sides of the two brackets through the air inlets due to air loss in the power amplifier, the interference of air inlet and air outlet can be avoided, and the efficient cooling work of the inside of the power amplifier is facilitated;
2. the two sides of the top of the device base are provided with two guide frames perpendicular to the long side, so that air entering the power amplifier through the two air inlets is guided by the guide strips and the separation strips on the two guide frames, low-temperature air can flow from the two sides of the power amplifier to the center, and the heat dissipation effect of the power amplifier is guaranteed;
3. through setting up same temperature detect switch between four radiator fan, be linked together the back with the circuit of four radiator fan insidely with temperature detect switch, can utilize temperature detect switch to monitor the inside temperature of power amplifier to whether control four radiator fan carries out the heat dissipation work, be favorable to the use of energy saving, reduce radiator fan's operating length, guarantee four radiator fan's life.
Drawings
FIG. 1 is a schematic view of the installation position structure of the present utility model;
FIG. 2 is an exploded view of the present utility model;
fig. 3 is a schematic overall structure of the present utility model.
Description of the drawings: 1. a power amplifier; 2. a filtering structure; 21. a filter screen; 22. a bracket; 221. a deflector; 222. a mounting base; 3. a protective device body; 31. a device base; 32. a flow guiding frame; 321. a flow guiding strip; 322. a separator bar; 33. a heat radiation fan; 34. a temperature control switch; 35. an air outlet; 36. and an air inlet.
Detailed Description
The technical scheme in the embodiment of the application aims to solve the problems of the background technology, and the overall thought is as follows:
example 1:
the embodiment describes a specific structure of an over-temperature protection device of a power amplifier, and specifically referring to fig. 1-3, the over-temperature protection device comprises a protection device main body 3 for performing heat dissipation work inside the power amplifier 1 and a filtering structure 2 arranged at the bottom of the protection device main body 3, wherein the protection device main body 3 comprises a device base 31, air inlets 36 are formed at two ends of the device base 31, four air outlets 35 are formed in the center of the device base 31, flow guide frames 32 are formed at the tops of two sides of the device base 31, and four heat dissipation fans 33 are arranged between the two flow guide frames 32;
as shown in fig. 2, four cooling fans 33 are assembled on the top of the device base 31 and are respectively located right above four air outlets 35, the device base 31 is assembled on the bottom of the power amplifier 1, the four cooling fans 33 convey air to the bottom between two flow guiding frames 32, when the high temperature air in the power amplifier 1 flows from the inside of the four air outlets 35, the air amount in the power amplifier 1 is reduced, so that a pressure difference is formed between the inside of the power amplifier 1 and the outside air, and the outside air can be conveyed into the power amplifier 1 through the two device bases 31, thereby achieving the effect of heat dissipation in the power amplifier 1;
secondly, in order to ensure the snare effect of the air entering the power amplifier 1 from the two air inlets 36 on the internal devices of the power amplifier 1, as shown in fig. 2, the two guide frames 32 each comprise a separation bar 322, the top ends of the separation bars 322 are integrally formed with guide bars 321, so that the separation bars 322 are vertical to the device base 31, the top parts of the guide bars 321 incline from the center to the two sides, the air entering the power amplifier 1 from the air inlets 36 can flow to the two sides and then be collected to the center, and finally be guided by the four cooling fans 33 to be discharged from the inside of the four air outlets 35 to the outside;
as shown in fig. 1, the filtering structure 2 comprises a filter screen 21, wherein both sides of the bottom of the filter screen 21 are provided with brackets 22, each bracket 22 comprises a mounting seat 222, and both ends of each mounting seat 222 are provided with guide plates 221;
the top of the mounting seat 222 is welded and fixed with the bottom of the filter screen 21, and the filter screen 21 is assembled and connected to the bottom of the device base 31, so that after four air outlets 35 and two air inlets 36 in the device base 31 are blocked, dust in the external air can be prevented from entering the power amplifier 1, and the air in the power amplifier 1 can be ensured to pass through the filter screen 21 and be discharged to the outside;
next, in order to split the air flowing into the power amplifier 1 through the two air inlets 36 and the air flowing out from the inside of the four air outlets 35, as shown in fig. 3, two air deflectors 221 on the same end of the two mounting seats 222 are inclined from two sides to the center and form an air outlet channel between the two brackets 22, when the high temperature air in the power amplifier 1 enters between the two mounting seats 222 through the four air outlets 35, the size of the channel for exhausting the air to two sides is reduced by the four air deflectors 221, so that the part of the air is guided to move faster and farther, and the hot air exhausted from the inside of the power amplifier 1 can be prevented from directly flowing back to the inside of the power amplifier 1 through the two air inlets 36.
By adopting the technical scheme:
in the above design, by processing two guide frames 32 perpendicular to the long side on two sides of the top of the device base 31 and processing two brackets 22 perpendicular to the long side on the bottom of the filter screen 21, when four cooling fans 33 on the top of the device base 31 discharge the high temperature air inside the power amplifier 1 from four air outlets 35 to the outside, an air outlet channel can be formed by the guide plates 221 and the mounting seats 222 on the two brackets 22, so that the high temperature air moves along the direction perpendicular to the long side at the center of the long side, and the inside of the power amplifier 1 is lost due to air loss, the outside air is conveyed to the outside of the two guide frames 32 from the outside of the two brackets 22 through the air inlets 36, and guided by the guide strips 321 and the separation strips 322 on the two guide frames 32, so that the low temperature air can flow from two sides inside the power amplifier 1 to the center, the amount of the high temperature air inside the power amplifier 1 can be replaced can be ensured, thereby achieving good heat dissipation effect and higher heat dissipation efficiency.
Example 2:
based on embodiment 1, this embodiment describes a specific structure of the protection device main body 3, and as shown in fig. 2, the same temperature control switch 34 is provided between the four heat dissipation fans 33;
by connecting the temperature control switch 34 to the top of the device base 31 in an assembling manner, the circuits inside the four heat dissipation fans 33 are all communicated with the temperature control switch 34, when the temperature inside the power amplifier 1 increases, the temperature control switch 34 is communicated with the circuits between the four heat dissipation fans 33 and the power supply, the four heat dissipation fans 33 are controlled to work, and when the temperature inside the power amplifier 1 decreases to a certain value, the temperature control switch 34 cuts off the circuits between the four heat dissipation fans 33 and the power supply.
The specific operation steps are as follows:
s1, when the internal temperature of a power amplifier 1 is higher than a temperature value monitored by a temperature control switch 34, the temperature control switch 34 is communicated with a circuit between four cooling fans 33 and a power supply to control the four cooling fans 33 to work;
s2, the four cooling fans 33 discharge the high-temperature air in the power amplifier 1 from the four air outlets 35 to the outside, the guide plates 221 and the mounting seats 222 on the two brackets 22 form an air outlet channel to move to two sides, and the outside air is conveyed to the outer sides of the two guide frames 32 from the outer sides of the two brackets 22 through the air inlets 36 due to air loss in the power amplifier 1;
s3, guiding the flow guide strips 321 and the separation strips 322 on the two flow guide frames 32 to enable low-temperature air to move to two sides of the interior of the power amplifier 1, then move to the center, and be discharged to the bottom by the four cooling fans 33;
s4, when the temperature inside the power amplifier 1 is reduced to a certain value, the temperature control switch 34 cuts off the circuit between the four cooling fans 33 and the power supply, and the cooling operation of the cooling fans 33 is stopped.
By adopting the technical scheme:
according to the design, the same temperature control switch 34 is arranged among the four cooling fans 33, after all the circuits inside the four cooling fans 33 are communicated with the temperature control switch 34, when the internal temperature of the power amplifier 1 is higher than the temperature value monitored by the temperature control switch 34, the temperature control switch 34 is communicated with the circuits between the four cooling fans 33 and the power supply, the four cooling fans 33 are controlled to work, the heat dissipation work is carried out on the interior of the power amplifier 1, and when the internal temperature of the power amplifier 1 is reduced to a certain value, the temperature control switch 34 cuts off the circuits between the four cooling fans 33 and the power supply, the cooling fans 33 are stopped to work, the energy consumption is facilitated, the working time of the cooling fans 33 is reduced, and the service life of the four cooling fans 33 is guaranteed.
Finally, it should be noted that: it is apparent that the above examples are only illustrative of the present utility model and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.
Claims (7)
1. An over-temperature protection device for a power amplifier, comprising:
a protection device body (3) for performing a heat radiation operation inside the power amplifier (1);
a filter structure (2) provided at the bottom of the protector body (3);
the protection device body (3) is pumped from two sides of the bottom of the power amplifier (1) to the inside, and is exhausted from the center of the inside of the power amplifier (1) to the bottom.
2. An over-temperature protection device for a power amplifier as claimed in claim 1, wherein: the protection device comprises a protection device main body (3) and is characterized in that the protection device main body (3) comprises a device base (31), air inlets (36) are formed in two ends of the device base (31), four air outlets (35) are formed in the center of the device base (31), flow guide frames (32) are formed in the tops of two sides of the device base (31), and four cooling fans (33) are arranged between the two flow guide frames (32);
four radiator fans (33) are connected to the top of the device base (31) in an assembled mode, and are respectively located right above four air outlets (35), and the device base (31) is connected to the bottom of the power amplifier (1) in an assembled mode.
3. An over-temperature protection device for a power amplifier as claimed in claim 2, wherein: the two diversion frames (32) comprise separation strips (322), and diversion strips (321) are integrally formed at the top ends of the separation strips (322);
wherein the separation strip (322) is vertical to the device base (31), and the top of the flow guide strip (321) is inclined from the center to two sides.
4. An over-temperature protection device for a power amplifier as claimed in claim 2, wherein: the same temperature control switch (34) is arranged among the four cooling fans (33), and the temperature control switch (34) is connected to the top of the device base (31) in an assembling way;
the circuits inside the four cooling fans (33) are communicated with the temperature control switches (34), and the temperature control switches (34) control the four temperature control switches (34) to work when the temperature inside the power amplifier (1) rises.
5. An over-temperature protection device for a power amplifier as claimed in claim 2, wherein: the filtering structure (2) comprises a filter screen (21), and brackets (22) are arranged on two sides of the bottom of the filter screen (21);
the filter screen (21) is connected to the bottom of the device base (31) in an assembling mode, and four air outlets (35) and two air inlets (36) in the device base (31) are plugged.
6. An over-temperature protection device for a power amplifier as defined in claim 5, wherein: the bracket (22) comprises a mounting seat (222), and guide plates (221) are machined at two ends of the mounting seat (222);
the top of the mounting seat (222) is welded and fixed with the bottom of the filter screen (21).
7. The over-temperature protection device of a power amplifier of claim 6, wherein: two guide plates (221) at the same end of the two installation seats (222) are inclined from two sides to the center, and an air outlet channel is formed between the two brackets (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322415038.2U CN220693112U (en) | 2023-09-06 | 2023-09-06 | Over-temperature protection device of power amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322415038.2U CN220693112U (en) | 2023-09-06 | 2023-09-06 | Over-temperature protection device of power amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220693112U true CN220693112U (en) | 2024-03-29 |
Family
ID=90370098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322415038.2U Active CN220693112U (en) | 2023-09-06 | 2023-09-06 | Over-temperature protection device of power amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220693112U (en) |
-
2023
- 2023-09-06 CN CN202322415038.2U patent/CN220693112U/en active Active
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