Air shower device for heat exchanger

Abstract

The application discloses a heat exchanger air shower device, which comprises a fan, an atomizing tooth part and a liquid supply device. The liquid supply device is used for supplying liquid to the rotating part of the fan, so that the liquid can be centrifugally thrown out when the rotating part of the fan rotates at high speed. The atomizing tooth part is used for receiving the liquid thrown out by the rotating part of the fan to differentiate the liquid. The fan is used for blowing the liquid drops differentiated by the atomizing tooth part. The atomizing tooth part comprises movable teeth, which can be moved to adjust the tooth density of the atomizing tooth part in the circumferential direction of the working position part. Whether the movable teeth are located in the working position can be adjusted, thereby changing the circumferential tooth density of the working position, the size and / or the atomizing amount of the atomized particles can be correspondingly changed, the liquid content and the particle size distribution range of the liquid particles in the liquid-containing air body can be correspondingly changed, and the different heat exchange efficiency requirements in different states can be met, so that the problem that the heat exchange efficiency of the air shower device cannot be adjusted can be effectively solved.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger technology, and more specifically, to an air shower device for heat exchangers. Background Technology

[0002] Air showers for heat exchangers typically consist of a spray system and a fan. The spray system sprays water onto the heat exchanger, where the water evaporates upon contact with the heat exchanger, rapidly absorbing the large amount of heat. The fan accelerates the outflow of gas from the heat exchanger and introduces fresh gas to prevent heat buildup, while also exchanging the water vapor. This heat exchange method has many structural variations, and the spray system is prone to clogging, leading to problems such as poor water flow.

[0003] Through long-term practice, the inventors discovered that a centrifugal humidifier currently in use can deliver high-humidity air. The liquid particles in the air meet the evaporative heat exchange requirements of the heat exchanger, while the air carries away the evaporated gas, eliminating the need for a spray device. This makes it particularly effective in heat exchangers, especially in air conditioning systems. The centrifugal humidifier mainly consists of a motor, impeller, atomizing disc, and atomizing cylinder. The atomizing disc and impeller are generally fixed to the motor's output shaft for synchronous rotation, while the atomizing cylinder and motor body are relatively fixed. A liquid supply device continuously supplies liquid to the atomizing disc. The liquid enters the atomizing disc and, driven by the motor, is flung outwards by centrifugal force, striking the atomizing cylinder and forming small droplets. Simultaneously, the impeller rotates, creating a unidirectional airflow. The liquid particles mix with the air and are carried away by the airflow, thus forming high-humidity air at the outlet.

[0004] Currently, to obtain finer liquid particles, atomizing teeth are added between the atomizing cylinder and the atomizing disc. For humidification, smaller atomized particles are generally better, and the water volume requirement is not high. However, when directly applied to heat exchangers, this cannot meet the adjustment needs of the heat exchanger, leading to excessive water volume and waste in some situations.

[0005] In summary, how to effectively solve the problem of the inability to adjust the heat exchange efficiency of air shower devices is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide an air shower device for heat exchangers, which can effectively solve the problem that the heat exchange efficiency of the air shower device cannot be adjusted.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] An air shower device for a heat exchanger includes a fan, atomizing teeth, and a liquid supply device. The liquid supply device supplies liquid to the rotating part of the fan so that the rotating part of the fan can centrifugally throw out liquid when it rotates at high speed. The atomizing teeth are used to receive the liquid thrown out by the rotating part of the fan and differentiate it. The fan blows out the liquid droplets differentiated by the atomizing teeth. The atomizing teeth include movable teeth that can be moved to adjust the circumferential tooth density of the atomizing teeth in the working position.

[0009] In this air shower device for heat exchangers, during operation, the position of the movable teeth can be adjusted according to the required mist volume, thereby changing the circumferential tooth density of the working position. Changes in the circumferential tooth density of the working position correspondingly alter the size and / or amount of atomized particles. Within a certain range, increasing the tooth density increases the atomization amount while decreasing the size of the atomized particles. Changing the size and / or amount of atomized particles correspondingly alters the liquid content and particle size distribution range in the liquid-containing airflow, thus meeting the atomization requirements of the operating conditions and satisfying different heat exchange efficiency requirements under different conditions. In summary, this air shower device for heat exchangers effectively solves the problem of the inability to adjust the heat exchange efficiency of traditional air shower devices.

[0010] Preferably, the atomizing teeth include fixed teeth located in the working position; the movable teeth are movable relative to the fixed teeth to enter and exit the working position, so as to be staggered from the fixed teeth when entering the working position to increase the circumferential tooth density.

[0011] Preferably, the fixed tooth and the movable tooth are arranged radially, and the movable tooth can rotate relative to the fixed tooth to adjust the misalignment angle between the fixed tooth and the movable tooth.

[0012] Preferably, the device includes a cylindrical outer shell, and the movable tooth is provided with a mounting part. The mounting part is engaged with the inner wall of the cylindrical outer shell through a bearing so that they can rotate relative to each other. The movable tooth is provided with an arc-shaped rack, and a gear that meshes with the arc-shaped rack is rotatably connected to the cylindrical outer shell so that the gear can drive the movable tooth to rotate when it rotates.

[0013] Preferably, the air outlet side of the cylindrical outer shell has an air outlet grille, and the fixing teeth are fixed to the air outlet grille by a connecting arm.

[0014] Preferably, in the direction near the air outlet, the teeth of the movable tooth protrude beyond the teeth of the fixed tooth.

[0015] Preferably, the movable tooth is axially movable relative to the fixed tooth to enter and exit the working position, and the movable tooth is offset from the fixed tooth when entering the working position.

[0016] Preferably, the two movable teeth are a first tooth section and a second tooth section, respectively, with the circumferential tooth density of the first tooth section being higher than that of the second tooth section, and the first tooth section and the second tooth section being able to enter the working position respectively.

[0017] Preferably, the first tooth and the second tooth are arranged axially side by side and fixed relative to each other; or, the first tooth and the second tooth are driven independently by different driving devices to enter and exit the working position.

[0018] Preferably, the fan includes an impeller and a rotating disk fixed relative to the impeller, and the liquid supply device is used to supply liquid to the rotating disk.

[0019] Preferably, it further includes an atomizing cylinder; in the radial direction, the atomizing teeth are disposed between the atomizing cylinder and the turntable. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a cross-sectional structural schematic diagram of the air shower device for heat exchangers provided in an embodiment of the present invention;

[0022] Figure 2 This is a three-dimensional structural schematic diagram of an air shower device for heat exchangers provided in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the air outlet side structure of the air shower device for heat exchangers provided in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the air inlet side structure of the air shower device for heat exchangers provided in an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the positional structure when the movable tooth and the fixed tooth coincide, provided in an embodiment of the present invention.

[0026] Figure 6 This is a schematic diagram of the positional structure when the movable tooth and the fixed tooth are misaligned, as provided in an embodiment of the present invention.

[0027] Figure 7 A three-dimensional structural schematic diagram of a gear provided for an embodiment of the present invention;

[0028] Figure 8 This is a three-dimensional structural diagram of the movable tooth provided in an embodiment of the present invention.

[0029] The following labels are shown in the attached diagram:

[0030] 1. Fan, 2. Movable gear, 3. Liquid supply device, 4. Fixed gear, 5. Cylindrical outer shell, 6. Gear, 7. Arc-shaped rack, 8. Bearing, 9. Air outlet grille, 10. Connecting arm, 11. Turntable, 12. Atomizing cylinder, 13. Motor, 14. Impeller, 15. Air inlet grille. Detailed Implementation

[0031] This invention discloses an air shower device for heat exchangers, which effectively solves the problem that the heat exchange efficiency of air shower devices cannot be adjusted.

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figures 1-8 , Figure 1 This is a cross-sectional structural schematic diagram of the air shower device for heat exchangers provided in an embodiment of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of an air shower device for heat exchangers provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the air outlet side structure of the air shower device for heat exchangers provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the air inlet side structure of the air shower device for heat exchangers provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the positional structure when the movable tooth and the fixed tooth coincide, provided in an embodiment of the present invention. Figure 6 This is a schematic diagram of the positional structure when the movable tooth and the fixed tooth are misaligned, as provided in an embodiment of the present invention. Figure 7 A three-dimensional structural schematic diagram of a gear provided for an embodiment of the present invention; Figure 8 This is a three-dimensional structural diagram of the movable tooth provided in an embodiment of the present invention.

[0034] In one specific embodiment, this embodiment provides an air shower device for a heat exchanger, which can be a centrifugal humidifier. Specifically, the air shower device for the heat exchanger includes a fan 1, an atomizing gear, and a liquid supply device 3. Other structures may also be included.

[0035] The liquid supply device 3 supplies liquid to the rotating parts of the fan 1, enabling the rotating parts of the fan 1 to centrifugally eject liquid when rotating at high speed. The rotating parts of the fan 1 can be the impeller 14 or a turntable 11 fixed relative to the impeller 14. When a turntable 11 is provided, both the turntable 11 and the impeller 14 can be fixed on the same rotating shaft, which can be connected to the main shaft of the motor 13, either fixedly or integrally formed. The liquid supply device 3 is generally a pumping device, or it can be connected to a municipal water supply system (tap water) to eliminate the need for a pump body. The pumping device can have a separate motor 13 or share a motor 13 with the fan 1. The liquid supply device 3 is used to supply liquid to the rotating parts of the fan 1, which mainly involves two situations: one situation is that the liquid supply device 3 supplies liquid to the impeller 14 of the fan 1. When the impeller 14 rotates at high speed, it throws out the liquid in a centrifugal direction, and the liquid is thrown out in all directions; the other situation is that the liquid supply device 3 supplies liquid to the turntable 11 added to the fan 1. The turntable 11 rotates at high speed with the impeller 14 to throw out the liquid.

[0036] The atomizing teeth are used to receive the liquid thrown out by the rotating part of the fan 1 for differentiation. When the rotating part rotates at high speed, the liquid is thrown out from the rotating part in a centrifugal manner under the action of centrifugal force. The atomizing teeth are set in the throwing path so that the thrown liquid can enter the atomizing teeth and hit the atomizing teeth at high speed, so that the atomizing teeth can differentiate the liquefied liquid particles, mainly breaking them into fine particles.

[0037] When the impeller 14 of the fan 1 rotates, it blows out the liquid droplets atomized by the atomizing teeth to form a liquid-containing airflow. When the impeller 14 of the fan 1 rotates, it pushes the airflow from the inlet side to the outlet side. During the pushing process, the airflow carries out liquid particles mixed in with it, thus forming a liquid-containing airflow on the outlet side.

[0038] The atomizing teeth include movable teeth 2, which can move to adjust the circumferential tooth density of the atomizing teeth located in the working position, thereby changing the atomization capability. Generally, within a set density range, a higher circumferential tooth density indicates more teeth, resulting in more fragments; conversely, a lower circumferential tooth density indicates fewer teeth, resulting in fewer fragments. However, as the circumferential tooth density continues to increase beyond the aforementioned set range, the number of fragments will not increase because interference has occurred in the teeth, potentially leading to water condensation and affecting the water model's performance.

[0039] The atomizing tooth section is equipped with movable teeth 2 in two main ways: The first way is that there are only movable teeth 2 and atomizing cylinder 12. The atomizing cylinder 12 is fixed in the working position, and the movable teeth 2 can move in and out of the working position. When the movable teeth 2 enter the working position, the movable teeth 2 atomize. When the movable teeth 2 move out of the working position, the atomizing cylinder 12 breaks down slightly. The liquid hits the flat or curved surface and splashes, thus forming particles. Of course, there can be multiple movable teeth 2 to enter and exit the working position separately, further adjusting the tooth density. The second way is that the atomizing tooth section has fixed teeth 4 and movable teeth 2. When both fixed teeth 4 and movable teeth 2 are in the working position, their teeth are staggered to form a composite atomizing tooth with a higher tooth density than fixed teeth 4.

[0040] In this air shower device for heat exchangers, during operation, the position of the movable tooth 2 can be adjusted according to the required mist volume, thereby changing the circumferential tooth density of the working position. Changes in the circumferential tooth density of the working position correspondingly alter the size and / or amount of atomized particles. Within a certain range, increasing the tooth density increases the atomization amount while decreasing the size of the atomized particles. Changing the size and / or amount of atomized particles correspondingly alters the liquid content and particle size distribution range in the liquid-containing airflow, thus meeting the atomization requirements of the operating conditions and satisfying different heat exchange efficiency requirements under different conditions. In summary, this air shower device for heat exchangers effectively solves the problem of the inability to adjust the heat exchange efficiency of air shower devices.

[0041] In some embodiments, the atomizing teeth preferably include fixed teeth 4 located at the working position. The movable teeth 2 are movable relative to the fixed teeth 4 to enter and exit the working position, so as to offset from the fixed teeth 4 when entering the working position to increase the circumferential tooth density. It should be noted that the manner of entering and exiting the working position is not limited; it can enter axially or circumferentially. It should be noted that the teeth of the movable teeth 2 and the fixed teeth 4 are offset, such as the teeth of the movable teeth 2 being located between adjacent teeth of the fixed teeth 4, to achieve circumferential offset and change the circumferential tooth density; the teeth of the movable teeth 2 and the fixed teeth 4 can be on the same circumference or on different circumferences. It should be noted that circumferential refers to the circumferential extension direction; for example, the tooth distribution direction along the circumference is the circumferential direction.

[0042] As attached Figure 3 , 5As shown in Figure 6, in some embodiments, the fixed tooth 4 and the movable tooth 2 can be radially fitted together, and the movable tooth 2 can rotate relative to the fixed tooth 4 to adjust the offset angle between the fixed tooth 4 and the movable tooth 2. The fixed tooth 4 can be fitted radially outside the movable tooth 2, or the movable tooth 2 can be fitted radially outside the fixed tooth 4. Specifically, the central angles corresponding to adjacent teeth of the fixed tooth 4 and the central angles corresponding to adjacent tooth portions of the movable tooth 2 can be equal or nearly equal, so that when rotated to a certain angle, the tooth portions of the movable tooth 2 and the tooth portions of the fixed tooth 4 coincide circumferentially. At this time, the movable tooth 2 moves out of its working position. When the rotation angle of the movable tooth 2 is half of the aforementioned central angle angle, the tooth portions of the movable tooth 2 and the tooth portions of the fixed tooth 4 are circumferentially offset and evenly distributed circumferentially.

[0043] In some embodiments, the movable tooth 2 can move axially relative to the fixed tooth 4 to enter and exit the working position, with the movable tooth 2 offset from the fixed tooth 4 when entering the working position. At this time, the movable tooth 2 can translate axially relative to the fixed tooth 4, such as moving away from the rotating component and moving away from the air outlet to disengage from the working position. It should be noted that the fixed tooth 4 can include a tooth ring and tooth portions, which can be arranged radially side-by-side or axially side-by-side. When arranged axially side-by-side, to facilitate the entry of the tooth portion of the movable tooth 2 into the space between the tooth portions of the fixed tooth 4, the tooth ring of the fixed tooth 4 can have holes to allow the tooth portion of the movable tooth 2 to pass through. Alternatively, the movable tooth 2 and the fixed tooth 4 can be offset radially to avoid interference from the tooth ring.

[0044] In some embodiments, the two movable teeth 2 can be designated as a first tooth section and a second tooth section, respectively. The circumferential tooth density of the first tooth section is higher than that of the second tooth section. The first tooth section and the second tooth section can respectively enter the working position. That is, multiple movable teeth 2 with different tooth densities are provided so that, in use, the movable tooth 2 with the corresponding tooth density can be selected to enter the working position according to actual needs, thereby changing the circumferential tooth density of the working position. It should be noted that when the first tooth section and the second tooth section are provided, at least the following two situations can be adopted. One situation is that the first tooth section and the second tooth section are arranged axially side by side and relatively fixed. In this case, only one driving device is required. The driving end is fixedly connected to the first tooth section or the second tooth section. When the driving end moves to the first position, the first tooth section enters the working position and the second tooth section disengages from the working position. When the driving end moves to the second position, the second tooth section enters the working position and the first tooth section disengages from the working position. In the second scenario, the first tooth and the second tooth are driven independently by different driving devices to enter and exit the working position. For example, a first driving device and a second driving device are provided. In this case, either or both of the first tooth and the second tooth can be located in the working position. When both are located in the working position, the first tooth and the second tooth are staggered.

[0045] In some embodiments, an atomizing cylinder 12 may be further provided to receive liquid passing through the teeth, thereby achieving a further atomization effect.

[0046] In one embodiment, this embodiment provides an air shower device for a heat exchanger. Specifically, the air shower device for a heat exchanger includes an impeller 14, a rotating disk 11, an atomizing cylinder 12, and atomizing teeth. It may also include other structures, such as a motor 13 or other driving devices that drive the impeller 14 and the rotating disk 11 to rotate, or a liquid supply device 3 that supplies liquid to the rotating disk 11, where the liquid on the rotating disk 11 is thrown out under centrifugal force. The structure of the rotating disk 11 can refer to the rotating disk structure of a centrifugal humidifier in the prior art. The atomizing teeth are disposed between the atomizing cylinder 12 and the rotating disk 11, and the atomizing teeth can efficiently break up liquid particles.

[0047] In one embodiment, as shown in the appendix Figure 1 , 7 As shown in Figure 8, the air shower device for the heat exchanger may also include a cylindrical outer shell 5. If the movable tooth 2 is sleeved outside the fixed tooth 4, then a mounting part can be provided on one axial side of the movable tooth 2. This mounting part is engaged with the inner wall of the cylindrical outer shell 5 via a bearing 8, allowing relative rotation. Correspondingly, on one side, an arc-shaped rack 7 is provided on the movable tooth 2, and a gear 6 is rotatably connected to the cylindrical outer shell 5, meshing with the arc-shaped rack 7. The two mesh with bevel teeth so that their axes can be perpendicular, allowing the movable tooth 2 to rotate when the gear 6 rotates. The rotation of the gear 6 can be manually operated by an operator, at which time the central shaft of the gear 6 can extend to the outside of the cylindrical outer shell 5. Of course, the rotation of the gear 6 can also be achieved by a drive component such as a motor.

[0048] In one embodiment, the motor 13, impeller 14, etc., are generally installed inside the cylindrical housing 5. One end of the cylindrical housing 5 is an air outlet, and the other end is an air inlet. Generally, an air outlet grille 9 is provided at the air outlet, and an air inlet grille 15 is provided at the air inlet. The motor 13 is mounted on the cylindrical housing 5 by a bracket. The impeller 14 and the turntable 11 can be located at the same end of the motor 13, or they can be located at opposite ends. Specifically, the impeller 14 is located at the air inlet, and the turntable 11 and atomizing teeth are located at the air outlet.

[0049] When the movable tooth 2 is sleeved on the outside of the fixed tooth 4, in order to facilitate the fixing of the fixed tooth 4, the fixed tooth 4 can be fixed to the air outlet grille 9 by means of the connecting arm 10.

[0050] It should be noted that, in order to ensure airflow, there are generally ventilation gaps between the fixed tooth 4 and the turntable 11, and between the fixed tooth 4 and the movable tooth 2. The centrifugally splashed liquid here will also be subject to axial force. Therefore, in the direction near the air outlet, the tooth of the movable tooth 2 protrudes beyond the tooth of the fixed tooth 4, so that the tooth of the movable tooth 2 located on the radially outer side can better meet the liquid that has shifted axially, so as to better break it up.

[0051] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0052] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heat exchanger air shower device, comprising a fan, an atomizing tooth part and a liquid supply device; the liquid supply device is used to supply liquid to the rotating part of the fan, so that the rotating part of the fan can centrifugally throw out liquid when rotating at high speed, the atomizing tooth part is used to meet the liquid thrown out by the rotating part of the fan to differentiate; the fan is used to blow out the liquid droplets differentiated by the atomizing tooth part; characterized in that, The liquid supply device is a pumping device, the atomizing tooth part comprises movable teeth, the movable teeth can move to adjust the tooth density of the movable teeth in the working position in the circumferential direction; The atomizing tooth part comprises fixed teeth in the working position; the movable teeth can move in and out of the working position relative to the fixed teeth to be arranged staggered with the fixed teeth to increase the tooth density in the circumferential direction when entering the working position; The fixed teeth and the movable teeth are arranged in a radial sleeve, the movable teeth can rotate relative to the fixed teeth to adjust the stagger angle of the fixed teeth and the movable teeth; or, the movable teeth can move in and out of the working position relative to the fixed teeth, the movable teeth are arranged staggered with the fixed teeth when entering the working position.

2. The air shower device for a heat exchanger according to claim 1, wherein The movable teeth are provided with mounting parts, the mounting parts and the inner wall of the cylindrical shell are matched by bearings to rotate relative to each other; the movable teeth are provided with arc-shaped tooth racks, the cylindrical shell is rotationally connected with gears engaged with the arc-shaped tooth racks, so that the gears can push the movable teeth to rotate when the gears rotate.

3. The air shower device for heat exchangers according to claim 2, wherein The air outlet side of the cylindrical shell has an air outlet grille, the fixed teeth are fixed to the air outlet grille by connecting arms.

4. The air shower device for heat exchangers according to claim 3, wherein In the direction close to the air outlet, the tooth part of the movable teeth protrudes from the tooth part of the fixed teeth.

5. The air shower device for heat exchangers according to claim 1, wherein The two movable teeth are a first tooth part and a second tooth part, the circumferential tooth density of the first tooth part is higher than that of the second tooth part, and the first tooth part and the second tooth part can enter the working position respectively.

6. The air shower device for heat exchangers according to claim 5, wherein The first tooth part and the second tooth part are axially arranged side by side and fixed relative to each other; or, the first tooth part and the second tooth part are independently driven by different driving devices to enter and exit the working position.

7. The air shower device for a heat exchanger according to any one of claims 1 to 6, characterized in that The fan comprises an impeller and a rotating disc fixed relative to the impeller, and the liquid supply device is used to supply liquid to the rotating disc.

8. The air shower device for heat exchangers according to claim 7, wherein The atomizing tooth part is arranged between the atomizing cylinder and the rotating disc in the radial direction.

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