CN211481718U - Over-temperature protection device for power amplifier - Google Patents
Over-temperature protection device for power amplifier Download PDFInfo
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- CN211481718U CN211481718U CN202020493874.6U CN202020493874U CN211481718U CN 211481718 U CN211481718 U CN 211481718U CN 202020493874 U CN202020493874 U CN 202020493874U CN 211481718 U CN211481718 U CN 211481718U
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- power amplifier
- protection device
- shell
- cooling fan
- sealing plate
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Abstract
The utility model discloses an excess temperature protection device for power amplifier belongs to the heat abstractor field. The power amplifier protection device comprises a protection shell, wherein a bearing plate is arranged in the protection shell, and a power amplifier assembly is placed on the bearing plate; the protective shell comprises a main shell with a hollow interior, a front sealing plate arranged at an opening at one end of the main shell and a rear sealing plate arranged at an opening at the other end of the main shell, wherein the front sealing plate and the rear sealing plate are connected with the main shell through fastening structures; at least one cooling fan is detachably arranged on the protective shell; the protective shell is provided with a plurality of vent holes; be provided with the clamp strip on two relative inner walls of main casing body respectively, the clamp strip includes upper slitter and lower slitter, and the clearance between upper slitter and the lower slitter and the thickness phase-match of bearing plate, and the width of bearing plate and the interval phase-match between two inner walls at clamp strip place.
Description
Technical Field
The utility model belongs to the heat abstractor field relates to an excess temperature protection device for power amplifier.
Background
A power amplifier, referred to as "power amplifier" for short, refers to an amplifier that can generate maximum power output to drive a load (e.g., a speaker) under a given distortion rate. The power amplifier plays a role of 'organization and coordination' in the whole sound system, and governs to some extent whether the whole system can provide good sound quality output.
The power amplifier includes various types, such as a type a power amplifier, a type B power amplifier, a type AB power amplifier, etc., however, the common and prominent problem of any power amplifier is that the amount of heat generated during use is high. Because the full current flows in when there is no signal, the electric energy is converted into high heat. As the signal level increases, some power may enter the load, but much is still converted to heat. In order to effectively deal with the problem of heat dissipation, the class a power amplifier must adopt a large heat sink and the class B power amplifier can use a smaller heat sink according to the specific situation of different types of heat sinks. However, in the existing power dissipation device, the heat dissipation effect is good, but the volume is often large, and the installation is inconvenient; small volume and poor heat dissipation effect.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the over-temperature protection device for the power amplifier is provided, and solves the problems that the existing power dissipation heat dissipation device is good in heat dissipation effect, large in size and inconvenient to install; small volume and poor heat dissipation effect.
The utility model adopts the technical scheme as follows:
an over-temperature protection device for a power amplifier comprises a protection shell, wherein a bearing plate is arranged in the protection shell, and a power amplifier assembly is placed on the bearing plate; the protective shell comprises a main shell with a hollow interior, a front sealing plate arranged at an opening at one end of the main shell and a rear sealing plate arranged at an opening at the other end of the main shell, wherein the front sealing plate and the rear sealing plate are connected with the main shell through fastening structures;
at least one cooling fan is detachably arranged on the protective shell;
the protective shell is provided with a plurality of vent holes;
be provided with the clamp strip on two relative inner walls of main casing body respectively, the clamp strip includes upper slitter and lower slitter, and the clearance between upper slitter and the lower slitter and the thickness phase-match of bearing plate, and the width of bearing plate and the interval phase-match between two inner walls at clamp strip place.
Wherein, the cooling fan is arranged on the front closing plate.
Wherein, the cooling fan is arranged on the rear sealing plate.
Wherein, cooling fan sets up respectively on preceding shrouding and back shrouding.
Further, the cooling fan comprises a fan cylinder, and a motor and blades connected to a main shaft of the motor are arranged in the fan cylinder; the air outlet surface generated by the rotation of the blades faces the inside of the protective shell, and a temperature measuring module is arranged in the area of the air outlet surface.
Further, still be provided with the fretwork cover plate on the cooling fan, the fretwork cover plate is located the dorsal part of air-out face, and the fretwork cover plate is connected with fan section of thick bamboo wall buckle.
Further, the device also comprises a controller arranged on the bearing plate; the controller is a single chip microcomputer and is electrically connected with the temperature measuring module and the motor of the cooling fan respectively.
Further, still include the tighrening ring, be provided with the internal thread on the inner wall of tighrening ring, be provided with the external screw thread on the fan section of thick bamboo outer wall, and above-mentioned internal thread matches with the external screw thread each other.
Furthermore, a plurality of light holes are arranged on the bearing plate.
The utility model discloses inside hollow protection casing has been set up to arrange the power amplifier subassembly in the protection casing, and set up a plurality of air vents on the protection casing, be used for guaranteeing the inside circulation of air of protection casing, draw forth the space that provides simultaneously for the circuit of power amplifier subassembly. The power amplifier assembly is placed on the bearing plate, and the bearing plate is provided with a plurality of light holes which are equivalently suspended in the protective shell, so that four sides of the power amplifier can be in good contact with air, and the heat dissipation efficiency is improved; while the light weight holes also facilitate the wiring of the power amplifier assembly. The cooling fan arranged on the protection shell monitors the heating part of the power amplifier assembly through the temperature measurement module, when temperature data collected by the temperature measurement module exceeds a threshold value arranged in the controller, the cooling fan is started to work, and after the temperature is reduced, namely the temperature data collected by the temperature measurement module is recovered to the threshold value, the cooling fan is shut down to save electric energy. The detachable installation mode is adopted between the cooling fan and the protection shell, the installation process is simple, and the using effect is good.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the utility model provides an excess temperature protection device for power amplifier, the hollow protective housing in inside has been set up, and arrange the power amplifier subassembly in the protective housing, and set up a plurality of air vents on the protective housing, be used for guaranteeing the inside circulation of air of protective housing, the cooling fan that sets up on the protective housing, through the key control of temperature measurement module to the power amplifier subassembly position of generating heat, when the temperature data that the temperature measurement module gathered surpassed establishes the threshold value in the controller, then start the cooling fan and begin work, after the temperature fell, when the temperature data that the temperature measurement module gathered promptly resumes to the threshold value in, then shut down the cooling fan, in order to practice thrift the electric energy. The utility model discloses an excess temperature protection device, with strong points to the counterweight heat-generating part position, the circulation of wind is strong during the heat dissipation, and is small, simple to operate, the radiating effect is good.
2. The utility model provides a cooling fan, accessible tighrening ring are installed to the protection casing on, only need pass the fan section of thick bamboo of cooling fan predetermined hole on the protection casing, then screw the tighrening ring from the opposite side of fan section of thick bamboo to the fan section of thick bamboo on, can fix cooling fan on the protection casing. The installation mode is convenient to disassemble and assemble and convenient to use.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and that for those skilled in the art, other relevant drawings can be obtained according to the drawings without inventive effort, wherein:
FIG. 1 is a schematic diagram of an over-temperature protection apparatus for a power amplifier;
fig. 2 is a schematic cross-sectional view of the present invention;
FIG. 3 is a schematic view of the cooling fan of the present invention;
the labels in the figure are: 1-protective shell, 11-main shell, 12-front sealing plate, 13-rear sealing plate, 2-supporting plate, 21-hoop strip, 3-power amplifier component, 4-cooling fan, 41-fan cylinder, 42-fastening ring and 5-vent hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention will be described in further detail with reference to the following examples.
Example 1
An over-temperature protection device for a power amplifier is shown in fig. 1. The power amplifier protection device comprises a protection shell 1, wherein a bearing plate 2 is arranged in the protection shell 1, and a power amplifier assembly 3 is placed on the bearing plate 2; the protective shell 1 comprises a main shell 11 with a hollow interior, a front sealing plate 12 arranged at an opening at one end of the main shell 11 and a rear sealing plate 13 arranged at an opening at the other end of the main shell 11, wherein the front sealing plate 12 and the rear sealing plate 13 are both connected with the main shell 11 through fastening structures;
at least one cooling fan 4 is detachably arranged on the protective shell 1;
a plurality of vent holes 5 are formed in the protective shell 1;
as shown in fig. 2, two opposite inner walls of the main housing 11 are respectively provided with a hoop strip 21, the hoop strip 21 includes an upper strip and a lower strip, a gap between the upper strip and the lower strip is matched with the thickness of the support plate 2, and the width of the support plate 2 is matched with the distance between the two inner walls where the hoop strip 21 is located.
In this embodiment, set up inside hollow protection casing 1, and this is bearing board 2 for the inside unsettled of protection casing 1, and power amplifier subassembly 3 all places on bearing board 2 to be not in the inner wall direct contact of protection casing 1, this four sides homoenergetic that has just guaranteed power amplifier subassembly 1 all can be better with the air contact, increased heat exchange efficiency. The support plate 2 is simply installed by inserting the support plate 2 into the hook strip 21 provided on the inner wall of the main casing 11. In order to further enhance the heat dissipation effect and to dissipate heat to the counterweight heat-generating portion in a targeted manner, a cooling fan is provided in the embodiment, and a plurality of air vents 5 are provided on the wall of the protection housing 1, so that the ventilation between the inside of the protection housing 1 and the outside air is enhanced, and the heat generated by the power amplifier assembly 3 can be better taken away.
When the power amplifier module 3 is installed, the power amplifier module 3 is firstly installed on the bearing plate 2, and can be fixedly installed by adopting a fastener or installed in an adhesion mode, and then the bearing plate 2 is inserted into the clamp strip 21 and is arranged inside the protective shell 1; then the cooling fan 4 is arranged on the front closing plate 12 and/or the rear closing plate 13; finally, the front and rear closure plates 12 and 13 are mounted to the main housing 11, respectively, using fasteners such as bolts.
Example 2
This example is a supplementary explanation of example 1.
The cooling fan 4 is arranged on the front sealing plate 12, or the cooling fan 4 is arranged on the rear sealing plate 13.
That is, when the cooling fan 4 is disposed on the front sealing plate 12, only the vent holes 5 are disposed on the rear sealing plate 13; when the cooling fan 4 is disposed on the rear sealing plate 13, only the vent holes 5 are disposed on the front sealing plate 12. These two arrangements are such that the direction of air flow throughout the interior of the protective casing 1 is unidirectional.
Example 3
This example is a supplementary explanation of example 1.
The cooling fan 4 is respectively arranged on the front closing plate 12 and the rear closing plate 13.
That is, the front sealing plate 12 and the rear sealing plate 13 are respectively provided with the cooling fan 4. By adopting the arrangement mode, the air flowing direction in the whole protective shell 1 is unidirectional, namely one cooling fan 4 blows air to the interior of the protective shell 1, and the other cooling fan 4 sucks air out from the interior of the protective shell 1, so that the heat dissipation efficiency of a unidirectional circulation line is enhanced; the protection casing 1 may be provided with two or more air circulation paths, which require specific paths to be planned in the protection casing 1, scientifically set positions of the vent holes 5 and some roadblocks to guide the formation of the air paths, which is equivalent to that the two cooling fans 4 are respectively responsible for the heat dissipation of a part of the power amplifier assembly 3, thereby reducing the working coverage of a single cooling fan 4 and increasing the working efficiency.
Example 4
This example is a supplementary explanation of example 1.
As shown in fig. 3, the cooling fan 4 includes a fan cylinder 41, and a motor and blades connected to a main shaft of the motor are disposed in the fan cylinder 41; the air outlet surface generated by the rotation of the blades faces the inside of the protective shell 1, and a temperature measuring module is arranged in the area of the air outlet surface.
In the embodiment, the blades rotate under the driving of the motor to generate airflow to actively cool the power amplifier assembly; the temperature measuring module positioned on the air outlet surface generated by the rotation of the blades can accurately obtain the temperature data of the surrounding environment when the power amplifier assembly 3 operates. Preferably, the temperature measuring module is an infrared temperature measuring device. When the temperature data that the temperature measurement module gathered surpassed the controller and establish the threshold value in, then start cooling fan 4 and begin work, wait the temperature to fall the back, when the temperature data that the temperature measurement module gathered resumes to the threshold value in promptly, then shut down cooling fan 4, not only practice thrift the electric energy, can also avoid driving the rotatory motor of cooling fan 4 blade and because of lasting the life reduction that the work leads to.
The cooling fan 4 is further provided with a hollow cover plate, the hollow cover plate is located on the back side of the air outlet face, and the hollow cover plate is connected with the cylinder wall of the fan cylinder 41 in a buckling mode. The blades are buckled through the hollowed-out cover plate, so that the novel wind power generator is safer and more reliable.
Example 5
This example is a supplementary description of example 4.
The device also comprises a controller arranged on the bearing plate 2; the controller is a single chip microcomputer and is electrically connected with the temperature measuring module and the motor of the cooling fan 4 respectively. The controller receives the signal from the temperature measuring module and controls the start, stop and rotating speed of the cooling fan 4 according to the internal processing logic and the setting of a user. The model of the single chip microcomputer in the embodiment is STC15F2K08S2, and the single chip microcomputers using other models to realize the same function all fall into the protection scope of the embodiment.
Example 6
This example is a supplementary description of example 4.
As shown in fig. 3, the fan further comprises a fastening ring 42, wherein an inner thread is provided on an inner wall of the fastening ring 42, an outer thread is provided on an outer wall of the fan cylinder 41, and the inner thread and the outer thread are matched with each other. During installation, the cooling fan 4 can be fixed on the protective casing 1 only by passing the fan cylinder 41 of the cooling fan 4 through a predetermined hole on the protective casing 1 and then screwing the fastening ring 42 onto the fan cylinder 41 from the other side of the fan cylinder 41. The installation mode is convenient to disassemble and assemble and convenient to use.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, and any modifications, equivalents and improvements made by those skilled in the art within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. An over-temperature protection device for a power amplifier, characterized in that: the power amplifier protection device comprises a protection shell (1), wherein a bearing plate (2) is arranged in the protection shell (1), and a power amplifier assembly (3) is placed on the bearing plate (2); the protective shell (1) comprises a main shell (11) with a hollow interior, a front sealing plate (12) arranged at an opening at one end of the main shell (11), and a rear sealing plate (13) arranged at an opening at the other end of the main shell (11), wherein the front sealing plate (12) and the rear sealing plate (13) are connected with the main shell (11) through fastening structures;
at least one cooling fan (4) is detachably arranged on the protective shell (1);
a plurality of vent holes (5) are formed in the protective shell (1);
be provided with card hoop strip (21) on two relative inner walls of main casing body (11) respectively, card hoop strip (21) include upper slitter and lower strip, and the thickness phase-match of clearance and bearing plate (2) between upper slitter and the lower strip, and the width of bearing plate (2) and the interval phase-match between two inner walls at card hoop strip (21) place.
2. An over-temperature protection device for a power amplifier according to claim 1, characterized in that: the cooling fan (4) is arranged on the front sealing plate (12).
3. An over-temperature protection device for a power amplifier according to claim 1, characterized in that: the cooling fan (4) is arranged on the rear sealing plate (13).
4. An over-temperature protection device for a power amplifier according to claim 1, characterized in that: the cooling fan (4) is respectively arranged on the front sealing plate (12) and the rear sealing plate (13).
5. An over-temperature protection device for a power amplifier according to any one of claims 2-4, characterized in that: the cooling fan (4) comprises a fan cylinder (41), and a motor and blades connected to a main shaft of the motor are arranged in the fan cylinder (41); the air outlet surface generated by the rotation of the blades faces the inside of the protective shell (1), and a temperature measuring module is arranged in the area of the air outlet surface.
6. An over-temperature protection device for a power amplifier according to claim 5, wherein: the cooling fan (4) is further provided with a hollow cover plate, the hollow cover plate is located on the back side of the air outlet face, and the hollow cover plate is connected with the wall of the fan cylinder (41) in a buckling mode.
7. An over-temperature protection device for a power amplifier according to claim 5, wherein: the device also comprises a controller arranged on the bearing plate (2); the controller is a single chip microcomputer and is electrically connected with the temperature measuring module and the motor of the cooling fan (4) respectively.
8. An over-temperature protection device for a power amplifier according to claim 5, wherein: the fan cylinder is characterized by further comprising a fastening ring (42), wherein an internal thread is arranged on the inner wall of the fastening ring (42), an external thread is arranged on the outer wall of the fan cylinder (41), and the internal thread is matched with the external thread.
9. An over-temperature protection device for a power amplifier according to claim 1, characterized in that: the bearing plate (2) is provided with a plurality of light holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020493874.6U CN211481718U (en) | 2020-04-07 | 2020-04-07 | Over-temperature protection device for power amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020493874.6U CN211481718U (en) | 2020-04-07 | 2020-04-07 | Over-temperature protection device for power amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211481718U true CN211481718U (en) | 2020-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020493874.6U Active CN211481718U (en) | 2020-04-07 | 2020-04-07 | Over-temperature protection device for power amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211481718U (en) |
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2020
- 2020-04-07 CN CN202020493874.6U patent/CN211481718U/en active Active
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