A fan speed regulator

Abstract

The utility model discloses a fan speed regulator, include: condensing fan pipeline, the inside of condensing fan pipeline one end is provided with EC fan body, and the outer wall fixed mounting of EC fan body has the thimble, the outer wall of thimble has four locating slots along the circumference equidistance, the surface fixed mounting of condensing fan pipeline one end has the fixed ring, and the surface rotatory mounting of fixed ring has the rotating ring. The utility model installs the setting of thimble, rotating ring and positioning assembly etc. component, in the installation of EC fan body in the inside of condensing fan pipeline one end, through the arc convex block of rotating ring inner wall all around in the rotation, extruding corresponding T type movable pin, makes T type movable pin to the EC fan body four all around in the inside of condensing fan pipeline fast positioning, through this mode can fast the dismounting of EC fan body, relative to through a plurality of bolts installation fixed, provides the convenient for the overhaul of EC fan.

Description

Technical Field

[0001] This utility model relates to the field of EC fan technology, specifically a fan speed controller. Background Technology

[0002] EC fans refer to centrifugal fans that use digital brushless DC external rotor motors or centrifugal fans that use EC motors. They are widely used. In existing EC fans, the main body of the EC fan includes the EC motor and the fan blades connected to the EC motor. EC fans can be used by installing them on the ventilation ducts of refrigeration equipment.

[0003] However, existing EC fan bodies are typically fixed to the ductwork using multiple bolts, requiring precise alignment, which makes the installation process cumbersome. Disassembly is also often difficult, resulting in low efficiency in the assembly and disassembly of the EC fan body. Therefore, this invention designs a fan speed controller to solve the problems existing in the prior art. Summary of the Invention

[0004] The purpose of this invention is to provide a fan speed controller to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fan speed controller, comprising: a condenser fan duct, an EC fan body is provided inside one end of the condenser fan duct, and a collar is fixedly installed on the outer wall of the EC fan body. Four positioning grooves are equidistantly opened on the outer wall of the collar along the circumference. A fixed ring is fixedly installed on the surface of one end of the condenser fan duct, and a rotating ring is rotatably installed on the surface of the fixed ring. A positioning component is provided between the inner wall of the rotating ring and the outer wall of the collar, and a limit component is provided between the top of the fixed ring and one side of the rotating ring.

[0006] Preferably, a rubber ring is fixedly connected inside the condenser fan duct, and one side of the EC fan body is placed on the surface of one side of the rubber ring.

[0007] Preferably, the surface of the fixed ring is provided with a bearing, and the inner ring of the bearing is fixedly connected to the surface of the fixed ring, and the outer ring of the bearing is fixedly connected to the inner wall of the rotating ring.

[0008] Preferably, the positioning component includes: arc-shaped protrusions and T-shaped movable pins. Four arc-shaped protrusions are provided, and are equidistantly fixedly installed on the inner wall of the rotating ring along the circumference. Each of the four arc-shaped protrusions corresponds one-to-one with one of the four positioning grooves. Four T-shaped movable pins are provided, and are equidistantly movably disposed inside one end of the condenser fan pipe along the circumference. One end of each T-shaped movable pin rests on the surface of an adjacent arc-shaped protrusion, and the other end extends into the interior of an adjacent positioning groove. A first return spring is fitted onto the surface of each T-shaped movable pin, with one end of the first return spring fixedly connected to the surface of one end of the T-shaped movable pin, and the other end of the first return spring fixedly connected to the surface of the condenser fan pipe.

[0009] Preferably, one end of the T-shaped movable pin is provided as an inclined surface, and the inclined surface of one end of the T-shaped movable pin cooperates with the arc-shaped surface of the arc-shaped protrusion.

[0010] Preferably, the limiting component includes a limiting groove and a connecting block. The limiting groove is formed on one side of the rotating ring. The connecting block is fixedly installed on the top of the fixed ring. A movable rod is horizontally movably disposed through the middle of the connecting block, and one end of the movable rod extends into the interior of the limiting groove. A connecting ring is fixedly connected to the surface of one end of the movable rod, and one side of the connecting ring rests on the surface of one side of the rotating ring. A second return spring is fitted in the middle of the movable rod, and one end of the second return spring is fixedly connected to the surface of one side of the connecting ring, and the other end of the second return spring is fixedly connected to the surface of one side of the connecting block.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model, through the setting of components such as collar, rotating ring and positioning assembly, enables the EC fan body inside one end of the condenser fan duct to be installed. During the installation, the arc-shaped protrusions around the inner wall of the rotating ring squeeze the corresponding T-shaped movable pins, so that the T-shaped movable pins can quickly position the EC fan body inside the condenser fan duct. This method can quickly disassemble and assemble the EC fan body, which is more convenient than installing and fixing with multiple bolts, and provides convenience for the maintenance of the EC fan. 2. By incorporating components such as a fixed ring, a rotating ring, and a limiting assembly, this utility model enables the rotating ring to automatically lock its position during EC fan body installation after rotating at a certain angle. This facilitates rapid installation of the EC fan body and further improves work efficiency. Attached Figure Description

[0012] Figure 1 This is a left-side view of the present invention; Figure 2This is a schematic front sectional view of the present invention; Figure 3 For the present utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4 This is a three-dimensional schematic diagram of the T-shaped movable pin of this utility model.

[0013] In the diagram: 1. Condenser fan duct; 101. Rubber ring; 2. EC fan body; 201. Collar; 202. Positioning groove; 3. Fixed ring; 4. Rotating ring; 5. Positioning assembly; 501. Arc-shaped protrusion; 502. T-shaped movable pin; 503. First return spring; 6. Limiting assembly; 601. Limiting groove; 602. Connecting block; 603. Movable rod; 604. Connecting ring; 605. Second return spring. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-4 This utility model provides an embodiment of a fan speed controller, comprising: a condenser fan duct 1; an EC fan body 2 is disposed inside one end of the condenser fan duct 1; a collar 201 is fixedly installed on the outer wall of the EC fan body 2; four positioning grooves 202 are equidistantly formed on the outer wall of the collar 201 along the circumference; a fixing ring 3 is fixedly installed on the surface of one end of the condenser fan duct 1; a rotating ring 4 is rotatably installed on the surface of the fixing ring 3; connecting rods are fixedly installed equidistantly on the outer wall of the rotating ring 4 along the circumference to facilitate the rotation of the rotating ring 4; a positioning component 5 is provided between the inner wall of the rotating ring 4 and the outer wall of the collar 201; the positioning component 5 enables quick assembly and disassembly of the EC fan body 2, facilitating maintenance of the EC fan body 2; and a limit component 6 is provided between the top of the fixing ring 3 and one side of the rotating ring 4; the limit component 6 automatically locks the position of the rotating ring 4 after it rotates a certain angle, facilitating quick installation of the EC fan body 2 and further improving work efficiency.

[0016] Please see Figure 2-3In this embodiment of the invention: a rubber ring 101 is fixedly connected inside the condenser fan duct 1, and one side of the EC fan body 2 rests on the surface of one side of the rubber ring 101. After the EC fan body 2 is installed inside one end of the condenser fan duct 1, the rubber ring 101 on the inner wall of the condenser fan duct 1 is pressed against one side by the collar 201 on the surface of the EC fan body 2, thereby improving the sealing of the condenser fan duct 1 and preventing debris from entering the equipment from one end of the condenser fan duct 1.

[0017] Please see Figure 2-3 In this embodiment of the invention: a bearing is provided on the surface of the fixed ring 3, and the inner ring of the bearing is fixedly connected to the surface of the fixed ring 3, while the outer ring of the bearing is fixedly connected to the inner wall of the rotating ring 4. The bearing arrangement improves the stability of the rotation of the rotating ring 4.

[0018] Please see Figure 2-3 In this embodiment of the present invention: the positioning component 5 includes: an arc-shaped protrusion 501 and a T-shaped movable pin 502. There are four arc-shaped protrusions 501, which are fixedly installed on the inner wall of the rotating ring 4 at equal intervals along the circumference. The four arc-shaped protrusions 501 correspond one-to-one with the four positioning grooves 202. There are four T-shaped movable pins 502, which are movably and equidistantly disposed inside one end of the condenser fan pipe 1 at equal intervals along the circumference. One end of the T-shaped movable pin 502 rests on the surface of the adjacent arc-shaped protrusion 501, and the other end of the T-shaped movable pin 502 extends into the interior of the adjacent positioning groove 202. A first return spring 503 is fitted on the surface of the T-shaped movable pin 502, and one end of the first return spring 503 is fixedly connected to the surface of one end of the T-shaped movable pin 502, and the other end of the first return spring 503 is fixedly connected to the surface of the condenser fan pipe 1. During the installation of the EC fan body 2 inside one end of the condenser fan duct 1, after the EC fan body 2 is placed and pressed into place inside the condenser fan duct 1, the rotating ring 4 is rotated. At this time, the rotating ring 4 rotates, and the arc-shaped surfaces of the four arc-shaped protrusions 501 equidistantly distributed along the circumference of its inner wall press and push the inclined surface of one end of the corresponding T-shaped movable pin 502, thereby causing the other end of the T-shaped movable pin 502 to move into the corresponding positioning groove 202. After the rotating ring 4 rotates a certain angle, the rotation of the rotating ring 4 is limited by the limiting component 6 on the surface of the fixed ring 3, thereby completing the fixation of the position of the EC fan body 2. This method allows for quick disassembly and assembly of the EC fan body 2, providing convenience for the maintenance of the EC fan body 2.

[0019] Please see Figure 1 and Figure 4In this embodiment of the invention: one end of the T-shaped movable pin 502 is set as an inclined surface, and the inclined surface of one end of the T-shaped movable pin 502 cooperates with the arc-shaped protrusion block 501. Due to the inclined surface of one end of the T-shaped movable pin 502, the arc-shaped surface of the arc-shaped protrusion block 501 in the inner wall of the rotating ring 4 can press against the inclined surface of one end of the T-shaped movable pin 502, thereby pressing the other end of the T-shaped movable pin 502 to move into the corresponding positioning groove 202.

[0020] Please see Figure 2-3 In an embodiment of this utility model: the limiting component 6 includes: a limiting groove 601 and a connecting block 602. The limiting groove 601 is opened on one side of the rotating ring 4. The connecting block 602 is fixedly installed on the top of the fixed ring 3. A movable rod 603 is horizontally movably inserted through the middle of the connecting block 602, and one end of the movable rod 603 extends into the interior of the limiting groove 601. A connecting ring 604 is fixedly connected to the surface of one end of the movable rod 603, and one side of the connecting ring 604 rests on the surface of one side of the rotating ring 4. A second return spring 605 is fitted in the middle of the movable rod 603, and one end of the second return spring 605 is fixedly connected to the surface of one side of the connecting ring 604. The other end of the second return spring 605 is fixedly connected to the surface of one side of the connecting block 602. When the rotating ring 4 drives the arc-shaped protrusion 501 on the inner wall to rotate and move by an angle, so that the other end of the four T-shaped movable pins 502 are inserted into the positioning groove 202 on the outer wall of the collar 201, the limiting groove 601 on one side of the rotating ring 4 rotates to the same horizontal position as one end of the movable rod 603. At this time, the second return spring 605 elastically returns to its original position, pushing the connecting ring 604 at one end of the movable rod 603 to move towards the rotating ring 4, so that one end of the movable rod 603 is inserted into the limiting groove 601 on one side of the rotating ring 4, thus locking the rotating ring 4. This method facilitates the rapid installation of the EC fan body 2 and further improves work efficiency.

[0021] Working principle: During the installation of the EC speed-regulating fan at the condenser fan duct, after the EC fan body 2 is placed inside the condenser fan duct 1 and pressed into place, the collar 201 on the surface of the EC fan body 2 moves to abut against the surface of the rubber ring 101. Then, by rotating the rotating ring 4, the four arc-shaped protrusions 501 on its inner wall, which are equidistant from each other along the circumference, press and push the inclined surface of one end of the corresponding T-shaped movable pin 502, thereby causing the T-shaped movable pin 502 to... The other end moves into the corresponding positioning groove 202. After the rotating ring 4 rotates a certain angle, the limiting groove 601 on one side of the rotating ring 4 rotates to the same horizontal level as one end of the movable rod 603. At this time, the second return spring 605 elastically resets, pushing the connecting ring 604 at one end of the movable rod 603 to move towards the rotating ring 4, so that one end of the movable rod 603 is inserted into the limiting groove 601 on one side of the rotating ring 4, thus locking the rotating ring 4 and fixing the position of the EC fan body 2. Content not described in detail in this specification belongs to prior art known to those skilled in the art.

[0022] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fan speed controller, comprising: A condenser fan duct (1) is characterized in that: an EC fan body (2) is provided inside one end of the condenser fan duct (1), and a collar (201) is fixedly installed on the outer wall of the EC fan body (2). Four positioning grooves (202) are provided at equal intervals along the circumference on the outer wall of the collar (201). A fixed ring (3) is fixedly installed on the surface of one end of the condenser fan duct (1), and a rotating ring (4) is rotatably installed on the surface of the fixed ring (3). A positioning component (5) is provided between the inner wall of the rotating ring (4) and the outer wall of the collar (201). A limit component (6) is provided between the top of the fixed ring (3) and one side of the rotating ring (4).

2. A fan speed controller according to claim 1, characterized in that: A rubber ring (101) is fixedly connected inside the condenser fan pipe (1), and one side of the EC fan body (2) is laid on the surface of one side of the rubber ring (101).

3. A fan speed controller according to claim 1, characterized in that: The surface of the fixed ring (3) is provided with a bearing, and the inner ring of the bearing is fixedly connected to the surface of the fixed ring (3), and the outer ring of the bearing is fixedly connected to the inner wall of the rotating ring (4).

4. A fan speed controller according to claim 1, characterized in that: The positioning component (5) includes: an arc-shaped protrusion (501) and a T-shaped movable pin (502). There are four arc-shaped protrusions (501), which are equidistantly fixed to the inner wall of the rotating ring (4) along the circumference. Each of the four arc-shaped protrusions (501) corresponds one-to-one with one of the four positioning grooves (202). There are four T-shaped movable pins (502), which are equidistantly movable through the condenser fan duct along the circumference. 1) Inside one end, one end of the T-shaped movable pin (502) rests on the surface of the adjacent arc-shaped protrusion (501), and the other end of the T-shaped movable pin (502) extends into the interior of the adjacent positioning groove (202). A first return spring (503) is fitted on the surface of the T-shaped movable pin (502), and one end of the first return spring (503) is fixedly connected to the surface of one end of the T-shaped movable pin (502), and the other end of the first return spring (503) is fixedly connected to the surface of the condenser fan pipe (1).

5. A fan speed controller according to claim 4, characterized in that: One end of the T-shaped movable pin (502) is set as an inclined surface, and the inclined surface of one end of the T-shaped movable pin (502) matches the arc-shaped surface of the arc-shaped protrusion (501).

6. A fan speed controller according to claim 1, characterized in that: The limiting component (6) includes a limiting groove (601) and a connecting block (602). The limiting groove (601) is opened on one side of the rotating ring (4). The connecting block (602) is fixedly installed on the top of the fixed ring (3). A movable rod (603) is horizontally movably inserted through the middle of the connecting block (602), and one end of the movable rod (603) extends into the interior of the limiting groove (601). A connecting ring (604) is fixedly connected to the surface of one end of the movable rod (603), and one side of the connecting ring (604) rests on the surface of one side of the rotating ring (4). A second return spring (605) is fitted in the middle of the movable rod (603), and one end of the second return spring (605) is fixedly connected to the surface of one side of the connecting ring (604), and the other end of the second return spring (605) is fixedly connected to the surface of one side of the connecting block (602).

Images