Cold-proof noise reduction structure of subway air conditioning system

Abstract

The utility model relates to the technical field of cold-proof noise reduction of air conditioning systems, in particular to a cold-proof noise reduction structure of a subway air conditioning system, which comprises an air supply pipe and an inner fixing frame. The inner fixing frame is internally and transversely provided with elliptical air guide cylinders, the elliptical air guide cylinders are parallel to one another, the inner fixing frame is internally and longitudinally provided with a plurality of acoustic panels which are transversely arranged, the elliptical air guide cylinders which are longitudinally arranged penetrate through the acoustic panels, and air flow can be divided by the acoustic panels when entering the elliptical air guide cylinders; the noise generated when airflow impacts a structural component is absorbed and weakened under the action of the sound absorption plate, the airflow is guided under the action of the obliquely-arranged oval air guide barrel, noise reduction treatment is conducted on the noise generated when the air conditioner system outputs air under the action of the sound absorption plate and the noise reduction cotton, the air exhaust and noise reduction effects are achieved in a matched mode, and the noise reduction effect is achieved. Compared with a traditional subway air conditioning system cold-proof noise reduction structure, the air exhaust efficiency is higher, and the situation that the air outlet is blocked by sound insulation cotton and the air outlet effect is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cold-proof and noise-reduction of air-conditioning systems, in particular to a cold-proof and noise-reduction structure for subway air-conditioning systems. Background Art

[0002] Subway is a means of transportation in urban traffic, with the characteristics of large carrying capacity and fast speed. In order to ensure the comfort of passengers, existing subways will install air conditioners in the carriages, use air conditioning for cooling or heating, and then transport air to each carriage through pipes to maintain the temperature of the carriage. When the air is transported to each carriage, the air outlet will generate greater noise, affecting the comfort of passengers.

[0003] A patent with announcement number CN 214120377 U discloses a subway air-conditioning system cold-proof and noise-reduction structure, including an air-duct subway air-conditioning system cold-proof and noise-reduction structure, the wall of which is filled with an insulation layer; the fixed-duct subway air-conditioning system cold-proof and noise-reduction structure is connected to the bottom of the air-duct subway air-conditioning system cold-proof and noise-reduction structure, the insulation layer can avoid mutual interference between the temperatures inside and outside the air-duct, the sound of the air-conditioning airflow passing through the air-duct can be absorbed by the sound-absorbing cotton, and the air-duct can avoid deformation and blocking of the sound-absorbing cotton, thereby improving the stability of the sound-absorbing cotton during use.

[0004] However, the use of sound insulation cotton in the existing subway air-conditioning system's anti-cold and noise reduction structure will affect the air outlet efficiency, resulting in slow air outlet speed, which in turn leads to the inability to quickly discharge the wind pressure inside the pipeline. Long-term use will cause damage to the air-conditioning host; and the existing subway air-conditioning system's anti-cold and noise reduction structure is inconvenient to disassemble and clean; therefore, a subway air-conditioning system anti-cold and noise reduction structure is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art and to address the problems existing in the prior art, the utility model proposes a cold-proof and noise-reducing structure for a subway air-conditioning system.

[0006] The technical solution adopted by the utility model to solve the technical problem is as follows: the utility model discloses a subway air conditioning system cold-proof and noise-reducing structure, comprising an air supply pipe and an inner fixed frame; an elliptical air guide tube is transversely arranged in the inner fixed frame, and the elliptical air guide tube is arranged obliquely, through holes are evenly distributed and penetrated on the elliptical air guide tube, and the through holes are vertically opened, the elliptical air guide tube is filled with sound-absorbing cotton, a plurality of elliptical air guide tubes are longitudinally arranged in the inner fixed frame, and the plurality of elliptical air guide tubes are parallel to each other, the internal components of the elliptical air guide tubes are arranged the same, a sound-absorbing board is longitudinally arranged in the inner fixed frame, and a plurality of elliptical air guide tubes are transversely arranged, and the longitudinally arranged elliptical air guide tubes are penetrated and arranged in the sound-absorbing board;

[0007] The cam is provided with a plurality of locking plates at the bottom of the cam, and the locking plates are provided with a plurality of locking plates at the bottom of the cam.

[0008] Preferably, the elliptical air guide tubes and the sound absorbing panels are perpendicular to each other, the top ends of adjacent elliptical air guide tubes are located above the bottom ends of other adjacent elliptical air guide tubes, the sound absorbing panels are parallel to each other, and the through holes and the sound absorbing panels are cross-staggered, thereby achieving the effect of guiding noise reduction.

[0009] Preferably, the inner fixing frame can be embedded in the outer fixing frame, and a sealing strip is provided on the outer side of the inner fixing frame. The center lines of the pushing holes on both sides are parallel, so as to facilitate installation.

[0010] Preferably, the spring is located on the side opposite to the baffle and the pin rod, the pushing hole is opened in the two opposite side edges of the inner fixed frame, and the other end of the pin rod can be extended and set in the pin hole, so as to achieve the effect of pushing the pin rod to extend out of the annular limit plate, thereby improving the convenience of use.

[0011] Preferably, a U-shaped limit frame is installed on the inner fixed frame, a limit groove is provided in the inner opening of the U-shaped limit frame, a filter plate is slidably arranged in the limit groove, and a sealing plate is installed on the side of the filter plate, so as to achieve the filtering effect and improve the air supply effect.

[0012] Preferably, the filter plate is located directly above the middle opening of the inner fixed frame, the sealing plate can seal the opening of the U-shaped limit frame, a No. 2 magnetic strip is installed on the sealing plate, a No. 1 magnetic strip is installed on the U-shaped limit frame, and the No. 1 magnetic strip can be adsorbed with the No. 2 magnetic strip, thereby achieving the effect of facilitating disassembly and assembly.

[0013] The utility model is beneficial in that:

[0014] 1. When the airflow enters between the elliptical air guide tubes, the utility model will be divided by the sound-absorbing board. The noise generated by the airflow impacting the structural components is absorbed and weakened by the sound-absorbing board. The airflow is guided by the inclined elliptical air guide tube. The noise generated by the air outlet of the air conditioning system is reduced by the sound-absorbing board and the sound-absorbing cotton. The exhaust noise reduction effect is achieved by cooperation. Compared with the traditional subway air-conditioning system anti-cold and noise reduction structure, the exhaust efficiency is higher, and the sound insulation cotton is prevented from clogging the exhaust port and affecting the air outlet effect.

[0015] 2. The utility model simultaneously pushes the toggle plates arranged under the two sides of the inner fixed frame inward, and the baffles will move toward the spring side respectively. When the baffles move, they will drive the end of the pin rod to retract into the annular limit plate, and will move out from the pin hole opened on the inner side of the outer fixed frame. At this time, the inner fixed frame can be removed from the outer fixed frame, and the sealing plate can be pulled to separate the No. 1 magnetic strip from the No. 2 magnetic strip to take the filter plate out of the limit groove. The cooperation achieves the effect of easy disassembly and installation. Compared with the traditional subway air-conditioning system anti-cold and noise reduction structure, it is more convenient to disassemble and install, and more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 is a schematic diagram of a first three-dimensional structure;

[0018] Figure 2 It is a cutaway and enlarged schematic diagram of the main structure of the external fixing frame;

[0019] Figure 3 It is an enlarged schematic diagram of the main structure of the inner fixing frame assembly;

[0020] Figure 4 It is a cutaway and enlarged schematic diagram of the main structure of the locking assembly;

[0021] Figure 5 This is a cutaway and enlarged schematic diagram of the main structure of the noise reduction component;

[0022] Figure 6 It is a cutaway and enlarged schematic diagram of the main structure of the elliptical air guide tube assembly;

[0023] Figure 7 This is an enlarged schematic diagram of the main structure of the filter component.

[0024] In the figure: 1. air supply duct; 2. air outlet duct; 3. outer fixing frame; 4. pin hole; 5. inner fixing frame; 6. elliptical air guide tube; 7. through hole; 8. sound-absorbing cotton; 9. sound-absorbing board; 10. push hole; 11. annular limit plate; 12. pin rod; 13. baffle; 14. spring; 15. through groove; 16. toggle plate; 17. U-shaped limit frame; 18. limit groove; 19. filter plate; 20. sealing plate; 21. No. 1 magnetic strip; 22. No. 2 magnetic strip. DETAILED DESCRIPTION

[0025] 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 this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-6 As shown, a subway air conditioning system cold-proof noise reduction structure comprises an air supply pipe 1 and an inner fixed frame 5; an elliptical air guide tube 6 is transversely arranged in the inner fixed frame 5, and the elliptical air guide tube 6 is inclined, and through holes 7 are evenly distributed and penetrated on the elliptical air guide tube 6, and the through holes 7 are vertically opened, and the elliptical air guide tube 6 is filled with sound-absorbing cotton 8, a plurality of elliptical air guide tubes 6 are longitudinally arranged in the inner fixed frame 5, and the plurality of elliptical air guide tubes 6 are parallel to each other, and the internal components of the elliptical air guide tubes 6 are arranged the same, a sound absorbing board 9 is longitudinally arranged in the inner fixed frame 5, and a plurality of elliptical air guide tubes 6 are transversely arranged, and the longitudinally arranged elliptical air guide tubes 6 are penetrated in the sound absorbing board 9, the elliptical air guide tubes 6 and the sound absorbing board 9 are perpendicular to each other, and the top ends of adjacent elliptical air guide tubes 6 are located above the bottom ends of another adjacent elliptical air guide tubes 6, the sound absorbing boards 9 are parallel to each other, and the through holes 7 and the sound absorbing boards 9 are cross-staggered.

[0027] During operation, the use of sound insulation cotton in the existing subway air-conditioning system's anti-cold and noise-reducing structure will affect the air outlet efficiency, resulting in a slow air outlet speed, which in turn causes the wind pressure inside the pipe to be unable to be discharged quickly. Long-term use will cause damage to the air-conditioning host. In this solution, the inner fixing frame 5 is installed in the outer fixing frame 3. During normal operation, the subway air-conditioning supplies air through the air supply pipe 1, and sends it into each car through the opening at the bottom of the air outlet pipe 2. When supplying air, the airflow will enter the inner fixing frame 5, and when the airflow enters the inner fixing frame 5, it will enter between the elliptical air guide tubes 6 that are arranged obliquely and parallel. When the airflow enters between the elliptical air guide tubes 6, it will be divided by the sound-absorbing board 9, thereby reducing the impact of the airflow flow, and cooperating with Under the action of the sound-absorbing plate 9, the noise generated by the airflow impacting the structural components is absorbed and weakened, and the airflow is guided and tilted through the elliptical air guide tube 6. Under the action of the inclined elliptical air guide tube 6, the airflow is guided, and part of the airflow will enter the elliptical air guide tube 6 through the through hole 7 on the upper part of the elliptical air guide tube 6. Under the action of the sound-absorbing cotton 8, the flow speed of part of the airflow will be slowed down and finally discharged from the through hole 7 at the bottom of the elliptical air guide tube 6. Under the action of the sound-absorbing plate 9 and the sound-absorbing cotton 8, the noise generated by the air outlet of the air-conditioning system is reduced, and the effect of exhaust noise reduction is achieved. Compared with the traditional subway air-conditioning system anti-cold and noise reduction structure, the exhaust efficiency is higher, and the sound insulation cotton is prevented from clogging the exhaust port and affecting the air outlet effect.

[0028] See also Figure 2-7As shown, an air outlet pipe 2 is arranged under the air supply pipe 1, and an outer fixing frame 3 is installed under the bottom opening of the air outlet pipe 2, two pin holes 4 are symmetrically provided on opposite sides of the outer fixing frame 3, and an inner fixing frame 5 is arranged in the lower opening of the outer fixing frame 3, and two opposite sides of the inner fixing frame 5 are respectively mirrored with two groups of locking components, and the locking component includes a pushing hole 10, and an annular limiting plate 11 is installed in the opening of the pushing hole 10, and a pin rod 12 is penetrated in the hole in the middle of the annular limiting plate 11, and a baffle 13 is installed at one end of the pin rod 12 located in the pushing hole 10, and a spring 14 is arranged in the pushing hole 10, and two through grooves 15 are symmetrically provided under the opposite sides of the inner fixing frame 5, and the four through grooves 15 are respectively communicated with the pushing holes 10 in the four groups of locking components, and toggle plates 16 are respectively slidably provided in the through grooves 15, and the top end of the toggle plate 16 penetrates the through grooves 15 and is installed Under the baffle 13, the inner fixed frame 5 can be embedded in the outer fixed frame 3, and a sealing strip is provided on the outer side of the inner fixed frame 5, the center lines of the push holes 10 on both sides are parallel, the spring 14 is located on the side of the baffle 13 opposite to the pin rod 12, the push hole 10 is opened in the two opposite side edges of the inner fixed frame 5, and the other end of the pin rod 12 can be extended and set in the pin hole 4, a U-shaped limit frame 17 is installed on the inner fixed frame 5, a limit groove 18 is opened in the inner opening of the U-shaped limit frame 17, a filter plate 19 is slidably arranged in the limit groove 18, a sealing plate 20 is installed on the side of the filter plate 19, the filter plate 19 is located just above the middle opening of the inner fixed frame 5, the sealing plate 20 can block the opening of the U-shaped limit frame 17, a No. 2 magnetic strip 22 is installed on the sealing plate 20, a No. 1 magnetic strip 21 is installed on the U-shaped limit frame 17, and the No. 1 magnetic strip 21 can be adsorbed with the No. 2 magnetic strip 22.

[0029] During operation, the existing subway air conditioning system cold-proof and noise-reducing structure is inconvenient to disassemble and clean. In this scheme, in the initial state, the spring 14 will always push the baffle plate 13 to the side of the baffle plate 13 facing the annular limit plate 11, thereby causing the baffle plate 13 to move to the side of the annular limit plate 11, and push the baffle plate 13 to drive the end of the pin rod 12 to pass through the annular limit plate 11 and be set in the pin hole 4 opened in the outer fixing frame 3, thereby fixing the inner fixing frame 5 in the bottom opening of the outer fixing frame 3, so as to reduce the noise of the air outlet of the air outlet duct 2. In this scheme, by simultaneously pushing the toggle plates 16 set on both sides of the inner fixing frame 5 inwardly, the toggle plates 16 on both sides move inwardly at the same time, and when the toggle plates 16 on both sides move inwardly at the same time, they will respectively drive the baffle plates 13 in the four groups of mirror-image locking assemblies to move inwardly respectively, and the baffle plates 13 will respectively move to the side of the spring 14, squeezing the spring 14 to shrink it. When the filter 19 is in the closed position, the filter 19 can be removed from the inner wall 3 by pulling the sealing plate 20 so that the first magnetic strip 21 is separated from the second magnetic strip 22. Then, the filter 19 and the elliptical air guide tube 6, the sound-absorbing cotton 8 and the sound-absorbing plate 9 can be cleaned. After the cleaning is completed, the toggle plate 16 is toggled again to retract the end of the pin rod 12 into the annular limiting plate 11. After the inner fixing frame 5 is placed in the outer fixing frame 3, the toggle plate 16 is released. Under the action of the spring 14, the end of the pin rod 12 will be re-inserted into the pin hole 4, and the inner fixing frame 5 can be fixed. The cooperation achieves the effect of easy disassembly and installation. Compared with the traditional subway air-conditioning system anti-cold and noise reduction structure, the disassembly and installation is more convenient and the use is more convenient.

[0030] Working principle: by installing the inner fixing frame 5 in the outer fixing frame 3, the subway air conditioner supplies air through the air supply pipe 1 during normal operation, and sends it into each compartment through the opening at the bottom of the air outlet pipe 2. When supplying air, the airflow will enter the inner fixing frame 5, and when the airflow enters the inner fixing frame 5, it will enter between the elliptical air guide tubes 6 arranged obliquely and parallel, and when the airflow enters between the elliptical air guide tubes 6, it will be divided by the sound absorbing board 9, thereby reducing the impact force of the airflow flow, and with the action of the sound absorbing board 9, the noise generated by the airflow impacting the structural components is absorbed and weakened, and the air is sent to the inner fixing frame 5 through the elliptical air guide tube 6. The flow guide is inclined, and the airflow is guided under the action of the inclined elliptical air guide tube 6, and part of the airflow will enter the elliptical air guide tube 6 through the through hole 7 on the upper part of the elliptical air guide tube 6. Under the action of the sound-absorbing cotton 8, the flow speed of part of the airflow will be slowed down and finally discharged from the through hole 7 at the bottom of the elliptical air guide tube 6. The noise generated by the air outlet of the air-conditioning system is reduced by the action of the sound-absorbing plate 9 and the sound-absorbing cotton 8, and the effect of exhaust noise reduction is achieved. Compared with the traditional subway air-conditioning system anti-cold and noise reduction structure, the exhaust efficiency is higher, and the sound insulation cotton is prevented from clogging the exhaust port and affecting the air outlet effect.

[0031] The spring 14 will always push the baffle plate 13 toward the side of the baffle plate 13 facing the annular limit plate 11 in the initial state, thereby causing the baffle plate 13 to move toward the side of the annular limit plate 11, and push the baffle plate 13 to drive the end of the pin rod 12 to pass through the annular limit plate 11 and be set in the pin hole 4 opened in the outer fixing frame 3, thereby fixing the inner fixing frame 5 in the bottom opening of the outer fixing frame 3, so as to reduce the noise of the air outlet of the air outlet duct 2. In this scheme, by simultaneously pushing the toggle plates 16 arranged under the two sides of the inner fixing frame 5 inwardly, the toggle plates 16 on both sides are moved inwardly at the same time, and when the toggle plates 16 on both sides are moved inwardly at the same time, the baffle plates 13 in the four groups of mirror-imaged locking assemblies are respectively driven to move inwardly, and the baffle plates 13 will move toward the side of the spring 14 respectively, squeezing the spring 14 to make it contract, and the pin rod 12 is installed on the baffle plate 13. When the baffle 1 When the filter plate 19 is removed from the outer fixing frame 3, the filter plate 19 and the elliptical air guide tube 6, the sound-absorbing cotton 8 and the sound-absorbing plate 9 can be cleaned. After the cleaning is completed, the toggle plate 16 is toggled again to make the end of the pin rod 12 retract into the annular limiting plate 11. After the inner fixing frame 5 is placed in the outer fixing frame 3, the toggle plate 16 is released. Under the action of the spring 14, the end of the pin rod 12 will be re-inserted into the pin hole 4, so that the inner fixing frame 5 can be fixed. The cooperation achieves the effect of easy disassembly and installation. Compared with the traditional subway air-conditioning system anti-cold and noise reduction structure, it is more convenient to disassemble and install, and more convenient to use.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A cold-proof and noise-reducing structure for a subway air-conditioning system, characterized in that: The invention comprises an air supply pipe (1) and an inner fixed frame (5); an elliptical air guide tube (6) is transversely arranged in the inner fixed frame (5), and the elliptical air guide tube (6) is arranged in an inclined manner; through holes (7) are evenly distributed and penetrated on the elliptical air guide tube (6), and the through holes (7) are vertically opened; the elliptical air guide tube (6) is filled with sound-absorbing cotton (8); a plurality of elliptical air guide tubes (6) are longitudinally arranged in the inner fixed frame (5), and the plurality of elliptical air guide tubes (6) are parallel to each other; the internal components of the elliptical air guide tubes (6) are arranged in the same manner; a sound absorbing board (9) is longitudinally arranged in the inner fixed frame (5), and a plurality of elliptical air guide tubes (6) are transversely arranged, and the longitudinally arranged elliptical air guide tubes (6) are penetrated and arranged in the sound absorbing board (9); An air outlet pipe (2) is arranged below the air supply pipe (1), an outer fixing frame (3) is installed below the bottom opening of the air outlet pipe (2), two opposite sides of the outer fixing frame (3) are symmetrically provided with two pin holes (4), and an inner fixing frame (5) is arranged in the lower opening of the outer fixing frame (3), two opposite sides of the inner fixing frame (5) are mirror-imaged with two sets of locking components, the locking components include a push hole (10), an annular limiting plate (11) is installed in the opening of the push hole (10), and the middle of the annular limiting plate (11) is A pin rod (12) is provided through the hole, a baffle (13) is installed at one end of the pin rod (12) located in the pushing hole (10), a spring (14) is provided in the pushing hole (10), two through grooves (15) are symmetrically provided under the opposite sides of the inner fixed frame (5), and the four through grooves (15) are respectively communicated with the pushing holes (10) in the four groups of locking components, and a toggle plate (16) is slidably provided in the through grooves (15), and the top end of the toggle plate (16) passes through the through grooves (15) and is installed under the baffle (13).

2. The cold-proof and noise-reducing structure for subway air-conditioning system according to claim 1, characterized in that: The elliptical air guide tubes (6) and the sound absorbing panels (9) are perpendicular to each other, the top ends of adjacent elliptical air guide tubes (6) are located above the bottom ends of other adjacent elliptical air guide tubes (6), the sound absorbing panels (9) are parallel to each other, and the through holes (7) and the sound absorbing panels (9) are arranged in a cross-staggered manner.

3. The cold-proof and noise-reducing structure for subway air-conditioning system according to claim 1, characterized in that: The inner fixing frame (5) can be embedded in the outer fixing frame (3), and a sealing strip is provided on the outer side of the inner fixing frame (5), and the center lines of the pushing holes (10) on both sides are parallel.

4. The cold-proof and noise-reducing structure for subway air-conditioning system according to claim 1, characterized in that: The spring (14) is located on a side of the baffle (13) opposite to the pin rod (12), the pushing hole (10) is opened in two opposite side edges of the inner fixing frame (5), and the other end of the pin rod (12) can be extended and arranged in the pin hole (4).

5. The cold-proof and noise-reducing structure for subway air-conditioning system according to claim 1 is characterized by: A U-shaped limiting frame (17) is installed on the inner fixed frame (5), a limiting groove (18) is provided in the inner opening of the U-shaped limiting frame (17), a filter plate (19) is slidably arranged in the limiting groove (18), and a sealing plate (20) is installed on the side of the filter plate (19).

6. The cold-proof and noise-reducing structure for subway air-conditioning system according to claim 5, characterized in that: The filter plate (19) is located directly above the middle opening of the inner fixed frame (5); the sealing plate (20) can seal the opening of the U-shaped limiting frame (17); a second magnetic strip (22) is installed on the sealing plate (20); a first magnetic strip (21) is installed on the U-shaped limiting frame (17); and the first magnetic strip (21) can be mutually adsorbed with the second magnetic strip (22).

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