Over-temperature protection device for power amplifier

Abstract

The utility model discloses an over-temperature protection device for a power amplifier, and particularly relates to the technical field of over-temperature protection, which comprises a heat preservation shell, a mounting groove is arranged on one side of the heat preservation shell, mounting holes are respectively arranged on two sides of the mounting groove, and an exhaust window is fixedly arranged on the other side of the heat preservation shell. A power amplifier is movably arranged on the inner side of the mounting groove; the two sides of the heat preservation shell are each provided with a dust filtering and air cooling device capable of sucking in filtered air. The dust filtering and air cooling device comprises an air inlet barrel, the air inlet barrel is fixedly arranged on one side of the heat preservation shell, a sliding frame is fixedly arranged on one side of the air inlet barrel, a dust filtering plate is movably arranged on the inner side of the sliding frame, and a pulling handle is fixedly arranged on one side of the dust filtering plate. A sliding installation device is arranged at the lower end of the inner wall of the heat preservation shell. According to the dust-filtering air-cooling power amplifier, the dust-filtering air-cooling device is arranged, so that filtering of sucked air and refrigeration and heat exchange of the air are facilitated, and the cooled air is blown to the outer surface of the power amplifier body to dissipate heat of the power amplifier body.

Description

Technical Field

[0001] The utility model relates to the technical field of over-temperature protection, and more specifically, to an over-temperature protection device for a power amplifier. Background Art

[0002] A power amplifier (English name: power amp lifi er), referred to as a "power amplifier", refers to an amplifier that can generate maximum power output to drive a load (such as a speaker) under a given distortion rate. The power amplifier plays a pivotal role in "organization and coordination" in the entire audio system, and to some extent dominates whether the entire system can provide good sound quality output. When protecting the power amplifier, an over-temperature protection device for the power amplifier is used.

[0003] After searching, for example, a Chinese patent application with application number CN202322321742.1 discloses an over-temperature protection device for a power amplifier. The protective shell is quickly cooled down by water storage plates installed on the upper and lower sides of the protective shell to ensure that the overall temperature of the protective shell remains stable. At the same time, the heat exchange windows opened on the upper and lower sides of the protective shell cooperate with the wind troughs opened on the corresponding sides of the two groups of water storage plates, so that the hot air can be discharged through the heat exchange guide plate inside the wind trough. Since the heat exchange guide plate is in close contact with the water storage plate, the heat can be quickly discharged after being heated to complete the heat dissipation operation, thereby further improving the cooling protection effect of the power amplifier body.

[0004] However, when the above solution is in use, hot air needs to be sucked into the protective casing to exhaust, and dust can easily be sucked into the protective casing through the bellows. The entry of dust has certain damage to the power amplifier body, and the cooling effect of the water storage plate can only effectively cool down the area around the contact water storage plate. Overall, the cooling effect is not ideal. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a power amplifier over-temperature protection device, and the technical problem to be solved is that dust can easily damage the power amplifier and the cooling effect is not ideal.

[0006] To achieve the above object, the utility model provides the following technical solution: a power amplifier over-temperature protection device, comprising a heat-insulating shell:

[0007] A mounting groove is provided on one side of the heat-insulating shell, mounting holes are provided on both sides of the mounting groove, an exhaust window is fixedly provided on the other side of the heat-insulating shell, and a power amplifier is movably provided inside the mounting groove;

[0008] Dust filter air cooling devices capable of drawing in filtered air are respectively provided on both sides of the heat-insulating shell, for filtering the drawn-in air and cooling and exchanging heat for the air;

[0009] The dust filtering air cooling device comprises an air inlet cylinder, which is fixedly arranged on one side of the heat-insulating shell, a sliding frame is fixedly arranged on one side of the air inlet cylinder, a dust filter plate is movably arranged inside the sliding frame, and a pulling handle is fixedly arranged on one side of the dust filter plate;

[0010] A sliding installation device capable of sliding the power amplifier into the inner side of the thermal insulation shell is provided at the lower end of the inner wall of the thermal insulation shell, and is used for sliding the power amplifier into the interior of the thermal insulation shell.

[0011] In a preferred embodiment, an exhaust fan is fixedly provided on the inner side of the air inlet cylinder via a bracket, and heat exchangers are fixedly provided on both sides of the heat-insulating outer shell.

[0012] In a preferred embodiment, the output end of the heat exchanger passes through both sides of the heat-insulating shell, and a plurality of heat exchange tubes are fixedly provided on the output end of the heat exchanger, and the heat exchange tubes are located at one end of the air inlet cylinder.

[0013] In a preferred embodiment, the sliding installation device includes two fixing frames, the two fixing frames are fixedly arranged at the lower end of the inner wall of the heat-insulating outer shell, and a plurality of connecting rods penetrate the inner sides of the two fixing frames.

[0014] In a preferred embodiment, an auxiliary block is fixedly provided at the lower end of the inner wall of the heat-insulating outer shell, and a plurality of the connecting rods penetrate the inner side of the auxiliary block.

[0015] In a preferred embodiment, two rollers are movably provided on the outer surface of the connecting rod, the two rollers are respectively located on both sides of the auxiliary block, and a limiting frame is fixedly provided on the inner wall of the heat-insulating outer shell.

[0016] In a preferred embodiment, a control board is fixedly provided at the input end of the power amplifier, two mounting handles are fixedly provided at one side of the control board, and bolts are inserted into the grooves on both sides of the control board and the mounting holes.

[0017] Technical effects and advantages of the utility model:

[0018] 1. The utility model is provided with a dust filter air cooling device, which is conducive to filtering the drawn air and cooling and exchanging heat for the air, blowing the cooled air on the outer surface of the power amplifier body, thereby achieving a cooling effect on the power amplifier, and inserting the dust filter plate into the sliding frame movably, so that when the air is extracted, the dust in the air can be filtered, and when the dust filter plate is blocked due to long-term work, the dust filter plate can be pulled out by pulling the handle, so that it is convenient to replace and clean, and the external air is extracted by the exhaust fan in the air inlet tube, and the drawn air passes through the surface of the heat exchange tube and is output by the heat exchanger, so that the air passing through the surface of the heat exchange tube can achieve heat exchange and cooling, and the cooled air enters the heat preservation shell, which can achieve comprehensive cooling of the outer surface of the power amplifier, thereby improving the cooling efficiency;

[0019] 2. The utility model is provided with a sliding installation device, which is conducive to sliding the power amplifier into the interior of the heat-insulating shell, reducing the friction generated during installation, making installation more labor-saving, and avoiding the problem of damaging the surface of the power amplifier due to friction. The connecting rod and the roller are limited by the fixing frame. When the power amplifier is inserted into the installation groove, the lower end of the power amplifier contacts the roller. With the advantage of the smaller friction of the roller, the power amplifier can be installed more labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0022] Figure 3 It is a side structural schematic diagram of the utility model.

[0023] Figure 4 This is a schematic diagram of the structure of the dust filtering air cooling device of the utility model.

[0024] Figure 5 It is a structural schematic diagram of the sliding installation device of the utility model.

[0025] The accompanying drawings are marked as follows: 1. Insulated shell; 2. Dust filtering air cooling device; 3. Sliding mounting device; 4. Control panel; 5. Mounting handle; 6. Power amplifier; 7. Mounting slot; 8. Mounting hole; 9. Exhaust window; 21. Air inlet pipe; 22. Sliding frame; 23. Pull handle; 24. Dust filter plate; 25. Exhaust fan; 26. Heat exchanger; 27. Heat exchange tube; 31. Fixed frame; 32. Connecting rod; 33. Auxiliary block; 34. Roller; 35. Limiting frame. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field of over-temperature protection without creative work are within the scope of protection of the utility model.

[0027] like Figure 1 , 2 As shown in Figure 3, the utility model provides a power amplifier over-temperature protection device, including a heat-insulating shell 1: a mounting groove 7 is opened on one side of the heat-insulating shell 1, mounting holes 8 are opened on both sides of the mounting groove 7, an exhaust window 9 is fixedly provided on the other side of the heat-insulating shell 1, a power amplifier 6 is movably provided inside the mounting groove 7, a control board 4 is fixedly provided on the input end of the power amplifier 6, two mounting handles 5 are fixedly provided on one side of the control board 4, and bolts are inserted into the grooves on both sides of the control board 4 and the mounting holes 8.

[0028] In order to cool the power amplifier more effectively, dust filter air cooling devices 2 capable of drawing in filtered air are respectively provided on both sides of the heat preservation housing 1, for filtering the drawn in air and cooling and exchanging heat with the air;

[0029] like Figure 3 As shown, the dust filtering air cooling device 2 includes an air inlet cylinder 21, which is fixedly arranged on one side of the heat preservation shell 1, a sliding frame 22 is fixedly arranged on one side of the air inlet cylinder 21, a dust filter plate 24 is movably arranged on the inner side of the sliding frame 22, and a pulling handle 23 is fixedly arranged on one side of the dust filter plate 24, and an exhaust fan 25 is fixedly arranged on the inner side of the air inlet cylinder 21 through a bracket, and heat exchangers 26 are fixedly arranged on both sides of the heat preservation shell 1, and the output ends of the heat exchangers 26 pass through both sides of the heat preservation shell 1, and a plurality of heat exchange tubes 27 are fixedly arranged on the output ends of the heat exchangers 26, and the heat exchange tubes 27 are located at one end of the air inlet cylinder 21, and the dust filter plate 24 is movably inserted into the sliding frame 22. The dust filter plate 24 can filter the dust in the air when the air is extracted. When the dust filter plate 24 is blocked due to long-term work, the dust filter plate 24 can be pulled out by pulling the handle 23, so that it is convenient to replace and clean. The exhaust fan 25 in the air inlet tube 21 draws the peripheral air, and the drawn air passes through the surface of the heat exchange tube 27 and the output of the heat exchanger 26. Therefore, the air passing through the surface of the heat exchange tube 27 can be cooled by heat exchange. The cooled air enters the thermal insulation shell 1, and the outer surface of the power amplifier 6 can be fully cooled, thereby improving the cooling efficiency.

[0030] Furthermore, in order to save effort in installing the power amplifier, a sliding installation device 3 capable of sliding the power amplifier 6 into the inner side of the heat-insulating shell 1 is provided at the lower end of the inner wall of the heat-insulating shell 1, and is used to slide the power amplifier 6 into the interior of the heat-insulating shell 1;

[0031] like Figure 4 As shown, the sliding installation device 3 includes two fixing frames 31, and the two fixing frames 31 are fixedly arranged at the lower end of the inner wall of the heat-insulating shell 1, and multiple connecting rods 32 penetrate the inner side of the two fixing frames 31. An auxiliary block 33 is fixedly arranged at the lower end of the inner wall of the heat-insulating shell 1, and multiple connecting rods 32 penetrate the inner side of the auxiliary block 33. Two rollers 34 are movably arranged on the outer surface of the connecting rod 32, and the two rollers 34 are respectively located on both sides of the auxiliary block 33. A limiting frame 35 is fixedly arranged on the inner wall of the heat-insulating shell 1, and the connecting rod 32 and the roller 34 are limited by the fixing frame 31. When the power amplifier 6 is inserted into the installation groove 7, the lower end of the power amplifier 6 contacts the roller 34. With the advantage of the smaller friction of the roller 34, it is easier to install the power amplifier 6.

[0032] The working principle is as follows: when the utility model is in use, the power amplifier 6 is inserted into the installation groove 7, and the sliding installation device 3 slides the power amplifier 6 to make the installation more labor-saving. The bolts on both sides of the power amplifier 6 are connected to the installation hole 8, so as to realize the installation and fixation of the power amplifier 6. The power amplifier 6 is cooled by the dust filtering air cooling device 2 to prevent dust from entering the utility model and causing damage to the power amplifier 6. In addition, the power amplifier 6 is cooled more comprehensively through the flow of cold air, thereby improving the cooling efficiency.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A power amplifier over-temperature protection device, comprising a heat-insulating housing (1), characterized in that: A mounting groove (7) is provided on one side of the heat-insulating outer shell (1), mounting holes (8) are provided on both sides of the mounting groove (7), an exhaust window (9) is fixedly provided on the other side of the heat-insulating outer shell (1), and a power amplifier (6) is movably provided inside the mounting groove (7); Dust filter air cooling devices (2) capable of drawing in filtered air are respectively provided on both sides of the heat-insulating shell (1), and are used to filter the drawn-in air and cool and heat-exchange the air; The dust filtering air cooling device (2) comprises an air inlet cylinder (21), the air inlet cylinder (21) is fixedly arranged on one side of the heat-insulating shell (1), a sliding frame (22) is fixedly arranged on one side of the air inlet cylinder (21), a dust filter plate (24) is movably arranged inside the sliding frame (22), and a pulling handle (23) is fixedly arranged on one side of the dust filter plate (24); The lower end of the inner wall of the heat-insulating outer shell (1) is provided with a sliding installation device (3) capable of sliding the power amplifier (6) into the inner side of the heat-insulating outer shell (1), and is used for sliding the power amplifier (6) into the interior of the heat-insulating outer shell (1).

2. The power amplifier over-temperature protection device according to claim 1, characterized in that: An exhaust fan (25) is fixedly provided on the inner side of the air inlet cylinder (21) via a bracket, and heat exchangers (26) are fixedly provided on both sides of the heat-insulating outer shell (1).

3. The power amplifier over-temperature protection device according to claim 2, characterized in that: The output end of the heat exchanger (26) passes through both sides of the heat-insulating outer shell (1), and a plurality of heat exchange tubes (27) are fixedly provided at the output end of the heat exchanger (26), and the heat exchange tubes (27) are located at one end of the air inlet cylinder (21).

4. The power amplifier over-temperature protection device according to claim 1, characterized in that: The sliding installation device (3) comprises two fixing frames (31), the two fixing frames (31) are fixedly arranged at the lower end of the inner wall of the heat-insulating outer shell (1), and a plurality of connecting rods (32) penetrate the inner sides of the two fixing frames (31).

5. The power amplifier over-temperature protection device according to claim 4, characterized in that: An auxiliary block (33) is fixedly provided at the lower end of the inner wall of the heat-insulating outer shell (1), and a plurality of connecting rods (32) penetrate the inner side of the auxiliary block (33).

6. The power amplifier over-temperature protection device according to claim 5, characterized in that: Two rollers (34) are movably provided on the outer surface of the connecting rod (32), and the two rollers (34) are respectively located on both sides of the auxiliary block (33). A limiting frame (35) is fixedly provided on the inner wall of the heat-insulating outer shell (1).

7. The power amplifier over-temperature protection device according to claim 1, characterized in that: A control board (4) is fixedly provided at the input end of the power amplifier (6), two mounting handles (5) are fixedly provided at one side of the control board (4), and the inside of the grooves on both sides of the control board (4) and the inside of the mounting hole (8) are threadedly connected with the same bolt.

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