Full-premixing air inlet noise reduction device for condensing boiler

Abstract

The utility model belongs to the technical field of condensing boilers, and particularly relates to a full-premixing air inlet noise reduction device for a condensing boiler, which comprises a box body, a filter shell is arranged on the bottom side of a top plate of the box body and positioned at an air inlet hole, a base plate is arranged on the inner wall of the filter shell, a rotating shaft is rotatably arranged on the top plate of the box body, and an air inlet is formed in the rotating shaft. A cover plate is fixedly arranged on the rotating shaft in a sleeving manner, a plate groove is formed in the cover plate, a clamping plate is mounted on the lifting block, a rod seat is mounted on the cover plate, the bottom side of the screw rod is rotationally connected with the clamping plate, a filter element is placed in the filter shell, and the screw rod drives the clamping plate to move upwards in the rotating process by rotating the screw rod; the clamping plate moves upwards into the plate groove of the cover plate, then the cover plate is rotated, the air inlet hole is opened, then the filter element is directly taken out, and a new filter element is placed into the filter shell from the air inlet hole, so that the filter element is conveniently replaced, tedious disassembly by using tools is avoided, and the convenience of replacement of the filter element is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to condensing boiler technical field, concretely is a kind of full premixing air intake noise reduction device for condensing boiler. BACKGROUND

[0002] The full premixing air intake device of condensing boiler refers to the device that gas and air are mixed fully according to optimum ratio before burning, air will produce air intake noise when entering full premixing air intake device, in order to suppress air intake noise, need to use noise reduction device.

[0003] A kind of full premixing air intake system for gas condensing boiler is disclosed in one Chinese patent with authorized announcement number CN 207081211 U, the system includes fan, premixing device, gas delivery device and air delivery device, gas delivery device and air delivery device are connected with premixing device respectively, premixing device is connected with fan, the air delivery device includes wind collecting hood, first filtering mechanism, first air delivery pipe, second filtering mechanism and second air delivery pipe, wind collecting hood is installed on premixing device, first filtering mechanism is connected with wind collecting hood by first air delivery pipe, second filtering mechanism is connected with wind collecting hood by second air delivery pipe.The utility model connects wind collecting hood with first air delivery pipe and second air delivery pipe, expands air supply opening area, to reduce air resistance, reduce noise;In addition, silencer is arranged on fan, can reduce fan noise, to realize the noise reduction of entire system.

[0004] In the process that the existing noise reduction device carries out noise reduction to the full premixing air intake device of condensing boiler, in order to ensure the effective operation of noise reduction device, filter core is usually used to filter dust and impurities in air, filter core needs to be replaced after long time use, since the step of replacement is more complicated, the convenience of filter core replacement is poor;Therefore, aiming at the above problems, a kind of full premixing air intake noise reduction device for condensing boiler is provided. UTILITY MODEL CONTENTS

[0005] In order to make up for the deficiencies of prior art, solve the problems existing in prior art, the utility model provides a kind of full premixing air intake noise reduction device for condensing boiler.

[0006] The utility model discloses a kind of full premixing air intake noise reduction devices for condensing boiler, including cabinet, control panel is installed on the cabinet outer wall, air inlet hole is opened in the cabinet top plate, filter shell is installed at air inlet hole at the bottom side of the cabinet top plate, gasket is installed on the filter shell inner wall, rotating shaft is rotatably installed on the cabinet top plate, cover plate is fixedly sleeved on the rotating shaft, plate groove is opened in the cover plate, multiple groups of lifting grooves are opened in the plate groove inner wall, lifting block is assembled in the lifting groove, clamping plate is installed on the lifting block, rod seat is installed on the cover plate, threaded hole is opened in the rod seat, screw rod is assembled in the threaded hole, knob is installed on the screw rod top side, the screw rod bottom side is rotatably connected with clamping plate, first air inlet groove is opened in the cover plate, second air inlet groove is installed on the clamping plate, filter core is placed in the filter shell, sound-absorbing cover is installed at the filter shell bottom side, by rotating screw rod, screw rod is moved upwards in the process of rotating and drives clamping plate, clamping plate moves upwards into the plate groove of cover plate, then rotates cover plate, realizes the opening of air inlet hole, then filter core is directly taken out, new filter core is placed into filter shell from air inlet hole, realizes the convenient replacement of filter core, avoids using tool to carry out tedious disassembly, is beneficial to improve the convenience of filter core replacement.

[0007] Preferably, sound-absorbing material is installed on the inner wall of the sound-absorbing cover, porous tubes are installed on the inner wall of the sound-absorbing material, air connection pipe is installed at the bottom side of the sound-absorbing cover, venturi mixer is installed at the other end of the air connection pipe, fan is installed at the other end of the venturi mixer, air guide pipe is installed at the other end of the fan, the air guide pipe penetrates the side wall of the cabinet and extends to the outside of the cabinet, gas connection pipe is installed on the venturi mixer, the other end of the gas connection pipe penetrates the top plate of the cabinet and extends to the outside of the cabinet, gas control valve is installed on the gas connection pipe, the gas control valve is connected with the control panel through internal circuit, the speed of air flow can be slowed down by the filter core, the air inlet noise is effectively suppressed, then the air enters the sound-absorbing cover, when the sound wave passes through the sound-absorbing material, it will separate the air molecules from it, thereby reducing reflection and reducing noise level, then the air enters the air connection pipe, the air inlet area is enlarged by the air connection pipe, thereby reducing the wind resistance and noise, realizing three times of noise reduction of the air inlet noise, and being beneficial to improve the noise reduction effect.

[0008] The utility model has the advantages that:

[0009] 1. The utility model discloses a kind of full premixing air intake noise reduction devices for condensing boiler, including cabinet, control panel is installed on the cabinet outer wall, air inlet hole is opened in the cabinet top plate, filter shell is installed at air inlet hole at the bottom side of the cabinet top plate, gasket is installed on the filter shell inner wall, rotating shaft is rotatably installed on the cabinet top plate, cover plate is fixedly sleeved on the rotating shaft, plate groove is opened in the cover plate, multiple groups of lifting grooves are opened in the plate groove inner wall, lifting block is assembled in the lifting groove, lifting block is installed on the lifting block, rod seat is installed on the cover plate, threaded hole is opened in the rod seat, screw rod is assembled in the threaded hole, knob is installed on the screw rod top side, the screw rod bottom side is rotatably connected with clamping plate, first air inlet groove is opened in the cover plate, second air inlet groove is installed on the clamping plate, filter core is placed in the filter shell, sound-absorbing cover is installed at the filter shell bottom side, by rotating screw rod, screw rod is moved upwards in the process of rotating and drives clamping plate, clamping plate moves upwards into the plate groove of cover plate, then rotates cover plate, realizes the opening of air inlet hole, then filter core is directly taken out, new filter core is placed into filter shell from air inlet hole, realizes the convenient replacement of filter core, avoids using tool to carry out tedious disassembly, is beneficial to improve the convenience of filter core replacement.

[0010] 2. The utility model discloses a filter core can slow down the speed of air flow, effectively restrain the air intake noise, after the air enters the sound absorption cover, when the sound wave passes through the sound absorption material, it will separate the air molecule from it, thereby reducing the reflection and reducing the noise level, after the air enters the air connection pipe, the air connection pipe expands the air inlet area, thereby reduce the wind resistance, reduce the noise, realize the three times noise reduction of air intake noise, be beneficial to improve the effect of noise reduction. BRIEF DESCRIPTION OF DRAWINGS

[0011] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, below will to the embodiment or prior art description needed to use the drawing briefly introduce, obviously, below description's drawing only some embodiments of the utility model, for the ordinary skilled person in the art comes, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0012] Figure 1 It is a first perspective three-dimensional structure schematic diagram;

[0013] Figure 2 It is a filter shell place three-dimensional structure schematic diagram;

[0014] Figure 3 It is a cover plate inside three-dimensional structure schematic diagram;

[0015] Figure 4 It is a sound absorption cover inside three-dimensional structure schematic diagram;

[0016] Figure 5 It is a box inside three-dimensional structure schematic diagram.

[0017] In the drawing: 1, box;2, control panel;3, filter shell;4, pad;5, rotating shaft;6, cover plate;7, plate groove;8, lifting groove;9, lifting block;10, clamping plate;11, rod base;12, screw;13, knob;14, first air inlet groove;15, second air inlet groove;16, filter core;17, sound absorption cover;18, sound absorption material;19, porous pipe;20, air connection pipe;21, venturi mixer;22, fan;23, gas guide pipe;24, gas connection pipe;25, gas control valve. DETAILED DESCRIPTION

[0018] Below will combine the drawing in the embodiments of the utility model, the technical scheme in the embodiments of the utility model is described clearly and completely, obviously, the described embodiment only is a part of the embodiment of the utility model, instead of all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skilled person in the art without making creative labor belong to the scope of the utility model protection.

[0019] Referring to Figures 1-3 As shown in the figure, a full premixing intake noise reduction device for condensing boilers, comprising a box 1, a control panel 2 is installed on the outer wall of the box 1, an air inlet hole is formed on the top plate of the box 1, a filter shell 3 is installed at the bottom side of the top plate of the box 1 at the air inlet hole, a gasket 4 is installed on the inner wall of the filter shell 3, a rotating shaft 5 is rotatably installed on the top plate of the box 1, a cover plate 6 is fixedly sleeved on the rotating shaft 5, a plate groove 7 is formed in the cover plate 6, a plurality of lifting grooves 8 are formed in the inner wall of the plate groove 7, lifting blocks 9 are assembled in the lifting grooves 8, clamping plates 10 are installed on the lifting blocks 9, a rod seat 11 is installed on the cover plate 6, a threaded hole is formed in the rod seat 11, a screw rod 12 is assembled in the threaded hole, a knob 13 is installed on the top side of the screw rod 12, the bottom side of the screw rod 12 is rotatably connected with the clamping plate 10, a first air inlet groove 14 is formed on the cover plate 6, a second air inlet groove 15 is installed on the clamping plate 10, a filter element 16 is placed in the filter shell 3, and a sound absorption cover 17 is installed at the bottom side of the filter shell 3; during the noise reduction process of the full premixing intake device of the condensing boiler, the existing noise reduction device usually uses the filter element 16 to filter dust and impurities in the air in order to ensure the effective operation of the noise reduction device. After long-term use of the filter element 16, the filter element 16 needs to be replaced. Since the replacement steps are complicated, the convenience of replacing the filter element 16 is poor. By rotating the knob 13, the screw rod 12 is driven to rotate, and the screw rod 12 drives the clamping plate 10 to move upward during rotation. The clamping plate 10 moves upward into the plate groove 7 of the cover plate 6. At this time, the clamping plate 10 no longer presses and positions the filter element 16, and no longer positions the cover plate 6. Rotate the cover plate 6, and the rotating shaft 5 thereon rotates on the top plate of the box 1. The cover plate 6 is no longer covered at the air inlet hole. The opening of the air inlet hole is realized. Then the filter element 16 is directly taken out, the new filter element 16 is placed into the filter shell 3 from the air inlet hole, and then the cover plate 6 is rotated above the air inlet hole. Reverse rotation of the screw rod 12 drives the clamping plate 10 to move vertically downward. The clamping plate 10 is clamped into the air inlet hole, and the filter element 16 is pressed and fixed. The convenient replacement of the filter element 16 is realized, avoiding the use of tools for complicated disassembly, which is conducive to improving the convenience of replacing the filter element 16.

[0020] Referring to Figures 4-5As shown, the inner wall of the sound-absorbing cover 17 is provided with sound-absorbing material 18, the inner wall of the sound-absorbing material 18 is provided with porous pipe 19, the bottom side of the sound-absorbing cover 17 is provided with air connection pipe 20, the other end of the air connection pipe 20 is provided with venturi mixer 21, the other end of the venturi mixer 21 is provided with fan 22, the other end of the fan 22 is provided with air guide pipe 23, the air guide pipe 23 penetrates through the side wall of the box body 1 and extends to the outside of the box body 1, the venturi mixer 21 is provided with gas connection pipe 24, the other end of the gas connection pipe 24 penetrates through the top plate of the box body 1 and extends to the outside of the box body 1, the gas connection pipe 24 is provided with gas control valve 25, the gas control valve 25 is connected with the control panel 2 through the internal circuit; in operation, the existing noise reduction device can only reduce the air intake noise once in the process of reducing the noise of the full premixing air intake device of the condensing boiler, resulting in poor noise reduction effect, under the action of pressure difference, external air is sucked into the air connection pipe 20 through the operation of the fan 22, in this process, the air will first pass through the filter element 16, the filter element 16 filters and removes impurities in the air, and at the same time, the filter element 16 can slow down the speed of air flow, reduce the turbulence and vibration generated when the air passes through the filter element 16, thereby effectively suppressing the intake noise and achieving the first noise reduction of the intake noise.

[0021] After that, the air enters the sound-absorbing cover 17, and in the process of the air flowing in the porous pipe 19, the noise sound waves of the air will enter the sound-absorbing material 18 from the holes on the porous pipe 19, the sound-absorbing material 18 is foamed plastic, when the sound waves pass through the sound-absorbing material 18, it will separate the air molecules from it, thereby reducing the reflection and reducing the noise level, achieving the second noise reduction of the intake noise.

[0022] After that, the air enters the air connection pipe 20, by setting the air connection pipe 20 as a rough pipe, the air inlet area can be expanded, thereby reducing the wind resistance and noise, achieving the third noise reduction of the intake noise.

[0023] After that, the air enters the venturi mixer 21, the model of the venturi mixer 21 is FSG-20, at the same time, the gas enters the venturi mixer 21 from the gas connection pipe 24, the premixing chamber in the venturi mixer 21 mixes the gas and air sufficiently to form combustible gas, the mixed combustible gas will enter the burner of the condensing boiler to be ignited, generating high-temperature and high-pressure combustion gas for heating the boiler; this structure can reduce the air intake noise multiple times, which is conducive to improving the noise reduction effect.

[0024] Working principle, in the process of reducing the noise of the full premixing air inlet device of the condensing boiler, in order to ensure the effective operation of the noise reduction device, the filter element 16 is usually used to filter the dust and impurities in the air. After long time use, the filter element 16 needs to be replaced. Because the replacement steps are complicated, the convenience of replacing the filter element 16 is poor. By rotating the knob 13, the screw rod 12 is driven to rotate, and the clamping plate 10 is driven to move upward in the process of rotating. The clamping plate 10 moves upward into the plate groove 7 of the cover plate 6. At this time, the clamping plate 10 no longer presses and positions the filter element 16, and no longer positions the cover plate 6. Rotate the cover plate 6, and the rotating shaft 5 on the cover plate 6 rotates on the top plate of the box body 1. The cover plate 6 is no longer covered at the air inlet hole. The opening of the air inlet hole is realized. Then the filter element 16 is directly taken out, and the new filter element 16 is placed into the filter shell 3 from the air inlet hole. Then the cover plate 6 is rotated above the air inlet hole, and the screw rod 12 is reversely rotated. The screw rod 12 drives the clamping plate 10 to move vertically downward. The clamping plate 10 is clamped into the air inlet hole, and the filter element 16 is pressed and fixed. The convenient replacement of the filter element 16 is realized, avoiding the complicated disassembly with tools, which is helpful to improve the convenience of replacing the filter element 16. In the process of reducing the noise of the full premixing air inlet device of the condensing boiler, the existing noise reduction device can only reduce the air inlet noise of the air once, which leads to poor noise reduction effect. By operating the fan 22, the external air is sucked into the air connector 20 under the action of pressure difference. In this process, the air will first pass through the filter element 16. The filter element 16 filters and removes impurities from the air. At the same time, the filter element 16 can slow down the speed of air flow, reduce the turbulence and vibration generated when the air passes through the filter element 16, thereby effectively suppressing the air inlet noise and realizing the first noise reduction of the air inlet noise. Then the air enters the sound absorbing cover 17. In the process of air flowing from the perforated pipe 19, the noise sound wave of the air will enter the sound absorbing material 18 from the holes on the perforated pipe 19. The sound absorbing material 18 is foamed plastic. When the sound wave passes through the sound absorbing material 18, it will separate the air molecules from it, thereby reducing the reflection and reducing the noise level, realizing the second noise reduction of the air inlet noise. Then the air enters the air connector 20. By setting the air connector 20 as a rough pipe, the air inlet area can be expanded, thereby reducing the wind resistance and noise, realizing the third noise reduction of the air inlet noise. Then the air enters the venturi mixer 21. The model of the venturi mixer 21 is FSG-20. At the same time, the gas enters the venturi mixer 21 from the gas connector 24. The premixing chamber in the venturi mixer 21 mixes the gas and air sufficiently to form combustible gas. The mixed combustible gas will enter the burner of the condensing boiler to be ignited, generating high temperature and high pressure combustion gas for heating the boiler. This structure can reduce the air inlet noise of the air for many times, which is helpful to improve the noise reduction effect.

[0025] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A full premix intake noise reduction device for condensing boilers, characterized by: The utility model relates to a kind of gas stove, including box (1), control panel (2) is installed on the outer wall of the box (1), air inlet hole is opened on the top plate of the box (1), filter shell (3) is installed at air inlet hole on the bottom side of the top plate of the box (1), gasket (4) is installed on the inner wall of the filter shell (3), rotating shaft (5) is rotatably installed on the top plate of the box (1), cover plate (6) is fixedly sleeved on the rotating shaft (5), plate groove (7) is opened in the cover plate (6), a plurality of lifting grooves (8) are opened on the inner wall of the plate groove (7), lifting block (9) is assembled in the lifting groove (8), clamping plate (10) is installed on the lifting block (9), lever seat (11) is installed on the cover plate (6), threaded hole is opened in the lever seat (11), screw rod (12) is assembled in threaded hole, knob (13) is installed on the screw rod (12) top side, screw rod (12) bottom side is rotatably connected with clamping plate (10), first air inlet groove (14) is opened in the cover plate (6), second air inlet groove (15) is installed on the clamping plate (10), filter core (16) is placed in the filter shell (3), sound-absorbing cover (17) is installed on the bottom side of the filter shell (3).

2. A full premixing intake noise reduction device for condensing boilers according to claim 1, characterized in that: Sound-absorbing material (18) is installed on the inner wall of the sound-absorbing cover (17), and porous pipe (19) is installed on the inner wall of the sound-absorbing material (18).

3. A full premixing intake noise reduction device for condensing boilers according to claim 1, characterized in that: Air connection pipe (20) is installed on the bottom side of the sound-absorbing cover (17), and venturi mixer (21) is installed on the other end of the air connection pipe (20).

4. A full premixing intake noise reduction device for condensing boilers according to claim 3, characterized in that: Fan (22) is installed on the other end of the venturi mixer (21), and air guide pipe (23) is installed on the other end of the fan (22), and the air guide pipe (23) penetrates the side wall of the box (1) and extends to the outside of the box (1).

5. A full premixing intake noise reduction device for condensing boilers according to claim 3, characterized in that: Gas connection pipe (24) is installed on the venturi mixer (21), and the gas connection pipe (24) penetrates the top plate of the box (1) and extends to the outside of the box (1) on the other end.

6. A full premixing intake noise reduction device for condensing boilers according to claim 5, characterized in that: Gas control valve (25) is installed on the gas connection pipe (24), and the gas control valve (25) is connected with control panel (2) by internal circuit.

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