A control cover component for a variable frequency oxygenator and an oxygenator comprising the same

Abstract

The utility model discloses a control cover component for frequency conversion oxygen -increasing machine and oxygen -increasing machine containing it, control cover includes control cover main part, control cover outer ring, upper end cover and control board, control cover main part and control cover outer ring are fixedly connected, and control cover main part is the open downward cylinder structure that aluminium plate integrative tensile becomes, control cover main part and upper end cover junction, set up first installation positioning stopper on control cover main part, set up second installation positioning stopper on upper end cover, set up sealing washer installation groove portion between first installation positioning stopper and second installation positioning stopper, sealing washer installation groove portion has installed sealing washer, set up gap between control cover outer ring and control cover main part, control cover outer ring upper part is a plurality of heat dissipation rib structure, control cover outer ring and upper end cover junction, set up a plurality of through -hole on control cover outer ring lower part, the utility model discloses have good leakproofness, heat dissipation and anticorrosion.

Description

Technical Field

[0001] This utility model relates to the field of aerator technology, specifically to a control cover component for a variable frequency aerator and an aerator containing the same. Background Technology

[0002] In aquaculture, aerators are crucial equipment, primarily used to increase dissolved oxygen levels in the water to prevent oxygen deficiency. They also inhibit the growth of anaerobic bacteria, preventing water quality deterioration that could threaten the survival of fish and shrimp. During operation, aerators agitate the water, generating numerous splashes that cool the motor. Since the aerator is equipped with a variable frequency drive (VFD) control board, which must not come into contact with water, the control cover housing this board requires superior waterproofing, heat dissipation, and reliability.

[0003] The existing control cover technology has the following problems:

[0004] (1) Sealing issues: The controller assembly in the prior art includes an end cover, a junction box, and a flange. To prevent water from entering the controller, the end cover is sealed by using sealant or a flat gasket on the locating surface before assembling with the flange. However, this assembly method has poor reliability and water can easily enter the end cover. Moreover, when assembling the end cover and the junction box, sealant or a flat gasket is also used, which can easily lead to water entering the connection seal over a long period of use, reducing the reliability of the variable frequency aerator motor.

[0005] (2) Corrosion problem: The water in the aquaculture pond is highly corrosive, especially in seawater aquaculture, which is highly corrosive to the control cover with the frequency converter control board. In the existing technology, the control cover is made of aluminum alloy, which is not resistant to seawater. Although the aluminum alloy has been surface treated, it does not effectively protect the treated surface, resulting in scratches, abrasions or other forms of damage to the surface, which will destroy the original protective layer and allow the corrosive medium to come into contact with the base metal, thereby accelerating the corrosion process.

[0006] (3) Heat dissipation problem: The existing control cover is die-cast, which easily traps gas and oxide slag during the die-casting process, forming micropores and air holes, and contains impurities, thereby reducing the actual thermal conductivity. The frequency converter control board mainly transfers heat through the control cover, which reduces the thermal conductivity and affects the heat dissipation, thus affecting the service life of the frequency converter control board. Utility Model Content

[0007] This utility model provides a control cover component for a variable frequency aerator and an aerator containing the same, to overcome the problems existing in the prior art: (1) sealing problem; (2) heat dissipation problem; (3) corrosion resistance problem.

[0008] The technical solution for the control cover component of the variable frequency aerator is as follows:

[0009] A control cover component for a variable frequency aerator includes a control cover body, a control cover outer ring, an upper cover, and a control plate. The control cover body and the control cover outer ring are fixedly connected. The control cover body is a cylindrical structure with an opening facing downwards, integrally stretched from an aluminum plate. After stretching, the control cover body is first machined and then subjected to hard anodizing. At the connection between the control cover body and the upper cover, a first mounting positioning stop is provided on the control cover body, and a second mounting positioning stop is provided on the upper cover. A sealing ring mounting groove is provided between the first and second mounting positioning stops, and a sealing ring is installed in the sealing ring mounting groove. A gap is provided between the control cover outer ring and the control cover body. The upper part of the control cover outer ring has multiple heat dissipation fins. At the connection between the control cover outer ring and the upper cover, multiple through holes are provided at the lower part of the control cover outer ring. The control plate is fixedly connected to the control plate body through a second connecting part. The sealing ring is used to prevent water from entering the control cover component. The heat dissipation fin structure can quickly channel water falling onto the heat dissipation fins to the control cover body, thus carrying away the heat transferred from the control board on the control cover body. The aluminum plate material of the control cover body is effectively corrosion-resistant.

[0010] As an optimization, in the aforementioned control cover component for the variable frequency aerator, the sealing ring is an axial O-ring. The O-ring is made of rubber and is deformable under pressure. When the sealing ring is compressed inside the sealing ring mounting groove, it deforms and applies pressure to the sealing surface. This compression deformation allows the sealing ring 4 to make a sealing contact with the sealing surface, preventing external liquid from entering the interior through the first gap 12.

[0011] As an optimization, the control cover component for the aforementioned variable frequency aerator has a main body that is a cylindrical structure made of stretched aluminum plate. When the aerator is running, the agitated water droplets fall onto the outer ring of the control cover. The water droplets flow along the heat dissipation fins of the outer ring of the control cover to the top surface of the control cover body, and then from the top surface to the side surface of the control cover body, thereby carrying away the heat transferred to the control cover body by the variable frequency control board. The cylindrical structure increases the contact area between the control cover body and the outside environment, further improving heat dissipation.

[0012] As an optimization, in the aforementioned control cover component for the variable frequency aerator, the outer ring of the control cover is made of nylon. The outer ring of the control cover is injection molded from nylon. Before the outer ring of the control cover is cooled after injection molding, the main body of the control cover is fitted onto the outer ring of the control cover. After the outer ring of the control cover cools, the shrinkage of the outer ring of the control cover fixes the main body of the control cover and the outer ring of the control cover into one piece.

[0013] As an optimization, in the aforementioned control cover component for the variable frequency aerator, the upper cover is connected to an external cable. This cable is made of a single-piece molded rubber material, specifically a die-cast rubber-coated cable. When the rubber cable is inserted into the upper cover, it is compressed and deformed, forming a sealing surface on the contact surface with the upper cover to prevent water leakage.

[0014] As an optimization, in the aforementioned control cover component for the variable frequency aerator, a step is provided on the cable at the connection between the cable and the upper cover. The step is deformed by compression and forms a sealing surface on the contact surface with the upper cover, further preventing water leakage.

[0015] As an optimization, in the aforementioned control cover component for the variable frequency aerator, the cable is externally fitted with a cap, and the cable and the cap are bolted to the upper cover.

[0016] For variable frequency aerators, the technical solution is as follows:

[0017] A variable frequency aerator, including the control cover component for the variable frequency aerator.

[0018] As an optimization, in the aforementioned variable frequency aerator, the bottom of the upper cover is connected to a motor.

[0019] The beneficial technical effects of this application are as follows: (1) Strong sealing performance: By designing a sealing ring at the contact part between the control cover body and the upper cover, the sealing at the first gap is achieved; by designing the cable as an integrally formed rubber cable and designing a stepped part at the connection between the cable and the upper cover, the sealing at the second gap is achieved. (2) Strong heat dissipation performance: By designing a heat dissipation rib structure on the upper part of the outer ring of the control cover, the water sprayed onto the control cover is diverted to the top and side of the control cover body, and a through hole is designed at the connection between the outer ring of the control cover and the upper cover, the liquid on the side of the control cover body is diverted through the through hole to avoid water accumulation and form a flowing water flow, which effectively removes the heat from the control cover body; at the same time, the control plate is fixedly connected to the control cover body through the second connecting part. The second connecting part has a large area, which can realize the rapid transfer of heat from the control plate to the control cover body, further accelerating the heat dissipation; and the thermal conductivity of the stretched aluminum plate is higher than that of the die-cast aluminum alloy. During the stretching and extrusion process, the metal flows along the axial direction, and the grains are fibrous and oriented, forming an efficient heat conduction channel. The stretching process eliminates porosity defects and ensures uniform wall thickness, reducing heat conduction interface loss and thus enhancing the heat dissipation performance of the control board. (4) Strong corrosion resistance: The main body of the control cover is made of stretched aluminum plate, and the surface is then subjected to hard anodizing treatment, which provides strong corrosion resistance. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the control cover component for the variable frequency aerator of this application.

[0021] Figure 2This is a front view of the control cover component for the variable frequency aerator of this application.

[0022] Figure 3 This is a cross-sectional view of the main view of the control cover component for the variable frequency aerator of this application.

[0023] Figure 4 This is a top view of the control cover component for the variable frequency aerator of this application.

[0024] Figure 5 This is the control cover component for the variable frequency aerator of this application. Figure 3 Enlarged view of part A in the middle.

[0025] The markings in the attached diagram are as follows: 1-Control cover body; 2-Control cover outer ring; 11-First mounting and positioning stop; 3-Upper end cover; 31-Second mounting and positioning stop; 4-Sealing ring; 5-Heat dissipation fin; 6-Through hole; 7-Cable; 8-Control board; 9-First connecting part; 10-Sealing ring mounting groove; 12-First gap; 13-Second gap; 14-Second connecting part; 15-Step part; 16-Cap. Detailed Implementation

[0026] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings, but it should not be construed as a basis for limiting this utility model.

[0027] Specific implementation reference for this application Figure 1-5 .

[0028] Control cover components for variable frequency aerators, such as Figure 1 , 3 As shown, the system includes a control cover, a control plate 8, and an upper cover 3. The control cover and the upper cover 3 are connected and fixed together, and the connection and fixing methods include bolts, fitting connections, and snap-fit ​​connections. In this embodiment, the control cover and the upper cover 3 are connected and fixed together by a first connecting part 9. The first connecting part 9 consists of two semi-circular mounting structures that fit together vertically, and the two semi-circular mounting structures are connected by bolts. The control plate 8 is fixedly connected to the control cover body 1 through a second connecting part 14, and the control plate 8 rapidly transfers heat to the control cover body 1 through the second connecting part 14.

[0029] As described Figure 1 and 3As shown, the control cover includes a control cover body 1 and a control cover outer ring 2. In this embodiment, the control cover body 1 is a cylindrical structure with an opening facing downwards, integrally stretched from a 6mm thick 5052 aluminum plate. After the control cover body 1 is stretched, it is first machined and then subjected to hard anodizing. The control cover outer ring 2 is injection molded from reinforced nylon PA66+GF30. Before the control cover outer ring 2 cools after injection molding, the control cover body 1 is fitted into the control cover outer ring 2. After the control cover outer ring 2 cools, the control cover body 1 and the control cover outer ring 2 are fixed into one piece by shrinking in size.

[0030] like Figure 3 , 5 As shown, there is a first gap 12 at the connection between the control cover and the upper cover 3. This first gap 12 is prone to water ingress. To prevent water from entering through the first gap 12 and to achieve a seal at the connection between the control cover body 1 and the upper cover 3, a first mounting positioning stop 11 is provided on one side of the control cover body 1, and a sealing ring mounting groove 10 is provided. A second mounting positioning stop 31 is provided on one side of the upper cover 3. The first and second mounting positioning stops 11 correspond to each other, and the sealing ring mounting groove 10 is located between them. The sealing ring mounting groove 10 is used to install the sealing ring 4. In this embodiment, the sealing ring 4 is an O-ring. The sealing ring 4 is made of rubber. When the sealing ring 4 is compressed inside the sealing ring mounting groove 10, it deforms, thereby applying pressure to the sealing surface. This compression deformation allows the sealing ring 4 to make a sealing contact with the sealing surface, preventing external liquid from entering the interior through the first gap 12.

[0031] like Figure 1 , 2 As shown in Figure 4, multiple heat dissipation ribs 5 are provided on the top of the outer ring 2 of the control cover, and multiple through holes 6 are provided at the connection between the side of the outer ring 2 of the control cover and the upper cover 3. A gap is provided between the heat dissipation ribs 5 and the control cover body 1. The heat dissipation ribs 5 can protect the control cover body 1 and also assist in heat dissipation. When the aerator is running, the agitated water droplets fall onto the outer ring 2 of the control cover. The water droplets flow along the heat dissipation ribs 5 of the outer ring 2 of the control cover to the top surface of the control cover body 1, and from the top surface to the side surface of the control cover body 1, thereby carrying away the heat transferred to the control cover body 1 by the frequency converter control board 8. The water flowing down the side surface of the control cover body 1 flows out through the through holes 6 to prevent water accumulation. Without the radiating heat dissipation ribs 5, when water droplets fall on the control cover body 1, most of them will splash and fall to the surrounding area, with only a small portion flowing to the side surface of the control cover body 1, resulting in poor heat dissipation of the control cover body 1. In this embodiment, the control cover body 1 has a cylindrical structure, which increases the contact area with external water and further improves heat dissipation.

[0032] like Figure 1-4As shown, an external cable 7 is connected to the upper end cover 3. A second gap 13 exists at the connection point between the cable 7 and the upper end cover 3, which is prone to water ingress. To prevent leakage through the second gap 13, the cable 7 is a one-piece die-cast rubber-headed cable. A stepped portion 15 is provided at the connection point between the cable 7 and the upper end cover 3. A cap 16 is provided on the outer side of the stepped portion 15. The cap 16 and the stepped portion 15 are fixedly connected to the upper end cover 3 by bolts. When the rubber cable 7 is inserted into the upper end cover 3, it deforms due to compression, forming a sealing surface with the upper end cover 3. This sealing surface extends from the stepped portion 15 into the interior of the upper end cover 3, preventing external liquid from flowing into the interior of the upper end cover 3.

[0033] The foregoing general description of the utility model and its specific embodiments should not be construed as limiting the technical solution of the utility model. Those skilled in the art, based on the disclosure of this application, can add, reduce, or combine the disclosed technical features in the foregoing general description and / or specific embodiments (including examples) without departing from the constituent elements of the utility model, to form other technical solutions within the protection scope of this utility model.

Claims

1. A control cover component for a variable frequency aerator, characterized in that: The control cover includes a control cover body (1), a control cover outer ring (2), an upper cover (3), and a control plate (8); the control cover body (1) and the control cover outer ring (2) are fixedly connected; at the connection between the control cover body (1) and the upper cover (3), a first mounting positioning stop (11) is provided on the control cover body (1), and a second mounting positioning stop (31) is provided on the upper cover (3); a space is provided between the first mounting positioning stop (11) and the second mounting positioning stop (31). A sealing ring mounting groove (10) is provided, and a sealing ring (4) is installed in the sealing ring mounting groove (10); a gap is provided between the outer ring (2) of the control cover and the main body (1) of the control cover; the upper part of the outer ring (2) of the control cover has a structure of multiple heat dissipation ribs (5); at the connection between the outer ring (2) of the control cover and the upper cover (3), multiple through holes (6) are provided at the lower part of the outer ring (2); the control plate (8) is fixedly connected to the main body (1) of the control plate through the second connecting part (14).

2. The control cover member for a variable frequency oxygen concentrator of claim 1, wherein: The sealing ring (4) is an O-ring, and the O-ring is deformable.

3. The control cover member for a variable frequency oxygen concentrator of claim 1, wherein: The control cover body (1) is a cylindrical structure made of stretched aluminum plate.

4. The control cover member for a variable frequency oxygen concentrator of claim 1, wherein: The outer ring (2) of the control cover is made of nylon.

5. The control cover member for a variable frequency oxygen concentrator of claim 1, wherein: The upper end cover (3) is connected to an external cable (7), which is made of integrally formed rubber material.

6. The control cover member for a variable frequency oxygen concentrator of claim 5, wherein: At the connection between the cable (7) and the upper end cover (3), a step (15) is provided on the cable (7).

7. The control cover member for a variable frequency oxygen generator according to claim 6, characterized by: The cable (7) is fitted with a cap (16), and the cable (7) and the cap (16) are bolted to the upper end cover (3).

8. A variable frequency oxygen generator, characterized in that: It includes the control cover component for a variable frequency aerator as described in any one of claims 1-7.

9. The variable frequency oxygen generator of claim 8, wherein: The motor is connected to the bottom of the upper cover (3).

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