Air inlet device

Abstract

The utility model belongs to the technical field of air coolers, and particularly relates to an air inlet device which comprises an air inlet duct and a cooling fan set used for sucking air into the air inlet duct, the cooling fan set is arranged between an air inlet and an air outlet of the air inlet duct, and the air inlet duct comprises a first silencing air duct and a second silencing air duct. The first noise reduction air duct and the second noise reduction air duct are both of streamline arc-shaped structures, so that the cooling fan unit can be clamped between the first noise reduction air duct and the second noise reduction air duct in a semi-closed mode through the arrangement of the noise reduction room, noise generated when the cooling fan unit works is effectively reduced, and the service life of the cooling fan unit is prolonged. And meanwhile, the first silencing air channel and the second silencing air channel are each of a streamline arc-shaped structure, so that air can flow along the arc-shaped inner walls when entering the first silencing air channel and the second silencing air channel, the air flowing resistance is effectively reduced, and the silencing and noise reduction effects are further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of air coolers, and particularly relates to an air intake device. Background Art

[0002] Air cooler is the abbreviation of air cooler. It is the most widely used heat exchange equipment for condensation and cooling in petrochemical and oil and gas processing production. The air cooler is usually equipped with a fan for cooling and an air intake device connected to the fan.

[0003] In the prior art, the air cooler as a whole is usually a rectangular structure, and the cooling fan is usually directly installed at the bottom of the air cooler and connected to the heat exchanger inside the air cooler. Therefore, when the cooling fan draws air into the air cooler and the air cooler starts working, the cooling fan will generate vibration and noise due to the rotation of its own fan blades, thereby adversely affecting the working environment. Utility Model Content

[0004] In view of this, the present invention provides an air intake device, the purpose of which is to, through the setting of a soundproof room, make the cooling air unit be semi-enclosed and sandwiched between the first soundproof air duct and the second soundproof air duct, thereby effectively reducing the noise generated when the cooling air unit is working. At the same time, by setting the first soundproof air duct and the second soundproof air duct as streamlined arc structures, the air will flow along the inner wall of the arc when entering the first soundproof air duct and the second soundproof air duct, thereby effectively reducing the resistance to air flow and further improving the effect of sound insulation and noise reduction.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] An air intake device includes an air intake duct and a cooling air unit for drawing air into the air intake duct, the cooling air unit being arranged between the air inlet and the air outlet of the air intake duct, the air intake duct including a first silencer duct and a second silencer duct, the first silencer duct and the second silencer duct both being streamlined arc-shaped structures, a silencer room being arranged between the air outlet of the first silencer duct and the air inlet of the second silencer duct, and the cooling air unit being sandwiched inside the silencer room.

[0007] As a preferred technical solution, the cooling air unit includes several small fans.

[0008] Furthermore, partitions are provided inside the first and second silencer ducts, and the partitions are connected to the air inlets and outlets of the first and second silencer ducts.

[0009] Furthermore, a flow channel is formed between the partition plate and the inner walls of the first and second silencer air ducts corresponding to each other.

[0010] Further, a heat exchanger is provided inside the air outlet of the first sound-absorbing air duct, and the heat exchanger includes a plurality of heat dissipation fins.

[0011] Further, the inner wall surface of the sound-absorbing chamber is covered with heat exchange cotton.

[0012] Further, the air intake device is composed of a plurality of the first sound-absorbing air ducts and the second sound-absorbing air ducts spliced with each other.

[0013] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0014] Through the setting of the sound-absorbing chamber, the cooling fan group will be semi-closed and clamped between the first sound-absorbing air duct and the second sound-absorbing air duct, thereby effectively reducing the noise generated during the operation of the cooling fan group. At the same time, by setting both the first sound-absorbing air duct and the second sound-absorbing air duct as streamlined arc-shaped structures, when the air enters the first sound-absorbing air duct and the second sound-absorbing air duct, it will flow along the arc-shaped inner wall, thereby effectively reducing the resistance of air flow and further improving the sound-absorbing and noise-reducing effect. Description of the Drawings

[0015] The present utility model will be described by way of examples and with reference to the accompanying drawings, wherein:

[0016] Figure 1 is a schematic structural diagram of an air intake device provided by the present utility model;

[0017] Figure 2 is a schematic internal structure diagram of the sound-absorbing chamber provided by the present utility model;

[0018] Figure 3 is a schematic modular structure diagram of the air intake device provided by the present utility model.

[0019] First sound-absorbing air duct - 1; Second sound-absorbing air duct - 2; Sound-absorbing chamber - 3; Partition - 4; Flow channel - 5; Heat exchanger - 6; Cooling fan group - 7. Specific Embodiments

[0020] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Embodiment 1

[0022] In the prior art, the overall design of air-cooled heat exchangers usually adopts a rectangular structure to achieve efficient and stable heat dissipation performance. Among them, the cooling fan, as a key component, is directly installed at the bottom of the air-cooled heat exchanger and is closely connected to the heat exchanger inside the air-cooled heat exchanger to ensure that heat can be dissipated quickly and effectively. However, during actual operation, when the cooling fan extracts air and drives the air-cooled heat exchanger to work, due to the rotational movement of its fan blades, it will inevitably generate a certain degree of vibration and noise. These vibrations and noises may not only potentially affect the stable operation of the air-cooled heat exchanger, but also have adverse factors on the working environment, affecting the comfort and work efficiency of the staff.

[0023] Therefore, in order to solve the problem that most existing cooling fans are directly installed at the bottom of the air-cooled heat exchanger, which will generate a large amount of vibration and noise during operation, and to achieve the functions of reducing noise and convenient installation, the present utility model discloses an air intake device. Refer to Figure 1 , including an air intake duct and a cooling fan group 7 for sucking air into the air intake duct. The cooling fan group 7 is arranged between the air inlet and the air outlet of the air intake duct. Specifically, the air intake duct includes a first sound-absorbing duct 1 and a second sound-absorbing duct 2. Both the first sound-absorbing duct 1 and the second sound-absorbing duct 2 are streamlined arc-shaped structures. A sound-insulating chamber 3 is sleeved between the air outlet of the first sound-absorbing duct 1 and the air inlet of the second sound-absorbing duct 2. The cooling fan group 7 is clamped inside the sound-insulating chamber 3;

[0024] In this embodiment, when the cooling fan group 7 starts to work, the noise generated by the cooling fan group 7 can be isolated and weakened through the sound-insulating chamber 3. The design of the sound-insulating chamber 3 can effectively block the propagation of noise, making the working environment quieter, thereby improving the comfort and work efficiency of the staff.

[0025] At the same time, since the cooling fan group 7 is clamped inside the sound-insulating chamber 3, this installation method not only helps to reduce noise, but also makes the cooling fan group 7 less susceptible to the influence of dust or rain, thereby making the overall structure more compact and stable.

[0026] In the above embodiment, the inner wall surface of the sound-insulating chamber 3 is laid with heat exchange cotton. The heat exchange cotton is processed and produced with glass fiber as the material, such as glass fiber cotton and glass wool, which has the functions of sound insulation and anti-resonance. Therefore, the sound-insulating chamber 3 can play a role in suppressing the vibration of the cooling fan group 7, thereby reducing the potential impact on other components of the air-cooled heat exchanger.

[0027] In this embodiment, since both the first sound-absorbing duct 1 and the second sound-absorbing duct 2 are streamlined arc-shaped structures, this design can not only reduce wind resistance and improve the smoothness of air flow, but also further enhance the sound-absorbing effect. When air flows through these arc-shaped structures, it can generate a certain degree of sound attenuation, thereby further reducing the generation of noise.

[0028] Compared with the existing straight air duct, the flow channel 5 in the arc-shaped intake device 1 is longer than that of the straight type, and the flow velocity of the air flow is made more uniform by lengthening the air flow channel.

[0029] In this embodiment, the air outlet of the first sound-absorbing air duct 1 is parallel above the sound-absorbing chamber 3, and the air inlet of the second sound-absorbing air duct 2 is parallel to the side surface of the sound-absorbing chamber 3.

[0030] Embodiment Two

[0031] On the basis of Embodiment One, in order to further improve the installation convenience of the cooling fan group 7, refer to Figures 2 - 3 , specifically, the cooling fan group 7 includes a number of small fans with a diameter not longer than 1000 mm or a mass not greater than 100 kg;

[0032] In this embodiment, since the cooling fan group 7 is assembled by a number of small fans, the cooling fan 7 can be disassembled and assembled modularly, so the installation and disassembly processes become more convenient. At the same time, because the size and mass of each small fan are relatively small, the staff can easily carry and assemble these small fans, thus greatly saving the installation time and labor cost;

[0033] Secondly, the modular design makes the cooling fan group have high flexibility and scalability. In practical applications, different numbers of small fans can be selected for combination according to needs to meet the cooling capacity requirements of air coolers of different scales. At the same time, if a certain small fan fails, it can be easily replaced without replacing the entire cooling fan group, thus reducing the maintenance cost.

[0034] In this embodiment, each small fan can work independently. When one or more small fans stop working, the remaining small fans can still continue to run, so as to ensure that the overall cooling effect of the air cooler is not affected.

[0035] Embodiment Three

[0036] On the basis of Embodiment One and Embodiment Two, in order to further improve the sound-absorbing effect of the intake device, refer to Figure 1 , the present utility model further includes a partition 4 for guiding air flow. Specifically, partitions 4 are provided inside both the first sound-absorbing air duct 1 and the second sound-absorbing air duct 2. The partition 4 communicates with the air inlets and outlets of the first sound-absorbing air duct 1 and the second sound-absorbing air duct 2, and a flow channel 5 is formed between the partition 4 and the inner walls of the first sound-absorbing air duct 1 and the second sound-absorbing air duct 2 that correspond to each other;

[0037] By setting the partition plate 4, the flow channels 5 in the first sound-absorbing air duct 1 and the second sound-absorbing air duct 2 can be evenly separated. In this way, after the air flow enters the intake air duct, it can be evenly distributed into each small flow channel 5, further improving the uniformity and flow efficiency of the air flow.

[0038] In this embodiment, optionally, the partition plate 4 is arranged in a cross-shaped structure, and the flow channels 5 are distributed in a grid pattern along the partition plate 4 inside the intake air duct. Through this setting, each divided small flow channel can be in a rectangular structure, so that the small flow channel can absorb sound from all four sides of the incoming air, further improving the sound absorption and noise reduction effect.

[0039] Embodiment 4

[0040] Based on Embodiments 1 to 3, refer to Figure 1 , the present utility model further includes a heat exchanger 6 for improving the heat exchange effect. Specifically, a heat exchanger 6 is provided inside the air outlet of the first sound-absorbing air duct 1, and the heat exchanger 6 includes a plurality of heat dissipation fins;

[0041] After the cooling fan group 7 sucks air from the second sound-absorbing air duct 2 into the first sound-absorbing air duct 1, the air entering the first sound-absorbing air duct 1 will contact the radiator 6, and then the radiator 6 can perform heat exchange operations through the heat dissipation fins.

[0042] Embodiment 5

[0043] Based on Embodiments 1 to 4, refer to Figure 3 , the intake device is composed of a plurality of the first sound-absorbing air ducts 1 and the second sound-absorbing air ducts 2 spliced together;

[0044] In this way, the intake device can be modularly assembled according to heat exchangers 6 of different specifications, further expanding the versatility of the intake device.

[0045] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0046] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An intake device, comprising an intake air duct and a cooling fan group (7) for sucking air into the intake air duct, wherein the cooling fan group (7) is arranged between the air inlet and the air outlet of the intake air duct, and is characterized in that, The intake air duct includes a first sound-absorbing air duct (1) and a second sound-absorbing air duct (2). Both the first sound-absorbing air duct (1) and the second sound-absorbing air duct (2) are streamlined arc-shaped structures. A sound-insulating chamber (3) is sleeved between the air outlet of the first sound-absorbing air duct (1) and the air inlet of the second sound-absorbing air duct (2). The cooling fan group (7) is clamped inside the sound-insulating chamber (3).

2. The intake device according to claim 1, wherein The cooling fan group (7) includes a plurality of small fans.

3. The intake device according to claim 1, characterized in that, Partition plates (4) are provided inside both the first sound-absorbing air duct (1) and the second sound-absorbing air duct (2). The partition plates (4) communicate with the air inlets and air outlets of the first sound-absorbing air duct (1) and the second sound-absorbing air duct (2).

4. The intake device according to claim 3, characterized in that, Flow channels (5) are formed between the partition plates (4) and the inner walls of the first sound-absorbing air duct (1) and the second sound-absorbing air duct (2) corresponding to each other.

5. The intake device according to claim 1, characterized in that A heat exchanger (6) is provided inside the air outlet of the first sound-absorbing air duct (1). The heat exchanger (6) includes a plurality of heat dissipation fins.

6. The intake device according to claim 1, characterized in that, The inner wall surface of the sound-insulating chamber (3) is covered with heat exchange cotton.

7. The intake device according to claim 1, characterized in that, The intake device is composed of a plurality of the first sound-absorbing air ducts (1) and the second sound-absorbing air ducts (2) spliced with each other.

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