Fresh air ventilation device

Abstract

The utility model discloses a kind of fresh air ventilation devices, belong to air film building application technical field, including mainframe shell, outer rotor, center stator and movable vane, wherein, eccentric position rotation is provided with outer rotor in the inside of mainframe shell, outer rotor then has several movable vanes and is inserted, the end of movable vane and the inner wall of mainframe shell abut sliding and the inner wall of mainframe shell is smooth cambered surface, therefore, movable vane will be with outer rotor rotation and do telescopic motion, and surface dust is scraped by outer rotor.And mainframe shell bottom installs scissors support, for supporting mainframe shell, and scissors support can be folded to save storage space.And end cap is set in the top of mainframe shell, and installs electric control box, the tail end of center stator is fixedly set on end cap, and is connected with electric control box circuit, the first end of center stator is inserted in the center of outer rotor, wherein, center stator power generation rotates magnetic field, thus to promote outer rotor rotation, to drive airflow flow.

Description

Technical Field

[0001] This utility model relates to the field of air-supported membrane building application technology, specifically to a fresh air exchange device. Background Technology

[0002] An air-supported membrane structure is a building structure system that uses special building membrane materials as its outer shell and provides positive air pressure inside the structure by equipping it with fan equipment to support the main body of the building.

[0003] Air-supported structures typically have ventilation systems to allow air to circulate between the inside and outside of the structure, thereby purifying the air inside. Currently, most ventilation systems use axial-flow fans with blades fixed to the rotor. Since the airflow passes through the blades and dust filters, a significant amount of dust accumulates on these surfaces. Because the existing dust filters are located inside the ventilation box, and the air inlet of the ventilation box is protected by a cover, workers must first remove the protective cover before removing the dust filter, making the process cumbersome.

[0004] In view of this, the applicant proposes a fresh air exchange device with a self-cleaning function, which removes dust from the surface of the blades by moving the blades inside the rotor. Utility Model Content

[0005] Therefore, this utility model provides a fresh air exchange device to solve the problem of difficult dust cleaning in existing air exchange devices.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model discloses a fresh air exchange device, comprising:

[0008] The main unit housing has a scissor bracket installed at the bottom and an end cover at the top, on which an electrical control box is installed;

[0009] An outer rotor is rotatably positioned at an eccentric location inside the main housing. Several movable blades are movably inserted into the outside of the outer rotor, and the ends of the movable blades contact the inner wall of the main housing.

[0010] The center stator is fixedly mounted on the end cover at its tail end and connected to the circuit of the electrical control box. The head end of the center stator is inserted into the center of the outer rotor.

[0011] The central stator is energized to generate a rotating magnetic field, which drives the outer rotor to rotate. The movable blades extend and retract as the outer rotor rotates, and scrape off the dust on the surface through the outer rotor.

[0012] Furthermore, the movable blade includes a fan blade, a rounded corner, and a stop block. The stop block is provided at the tail end of the fan blade, and the rounded corner is provided at the head end of the fan blade. The rounded corner slides along the inner wall of the main housing.

[0013] Furthermore, the outer rotor includes:

[0014] The rotating wheel has several slots evenly arranged along the tangential direction on its outer side, and the movable blade is slidably inserted into a single slot.

[0015] A central groove is located at the axis of the rotating wheel, and a plurality of permanent magnets are arranged circumferentially on the inner wall of the central groove;

[0016] A scraper nozzle is disposed at the outer end of the slot and is adapted to scrape off dust and droplets from the surface of the movable blade.

[0017] Furthermore, the slot passes through the wheel and communicates with the central slot.

[0018] Furthermore, the host housing includes:

[0019] The housing has a pair of handles symmetrically arranged on both sides, and the scissor brackets are installed on the pair of handles. An air inlet and an air outlet are provided on the front side of the housing.

[0020] An eccentric shaft is disposed inside the housing, and a rotating wheel is rotatably disposed on the eccentric shaft, the rotating wheel being located near the air outlet.

[0021] Furthermore, the center stator includes a fixed bracket, an excitation winding, a base, and a spline groove. The spline groove is located at the center of the base. The base is connected to the end of the fixed bracket. Several excitation windings are installed on the outside of the fixed bracket. When the excitation windings are energized, they generate a magnetic field to drive the permanent magnet to move.

[0022] Furthermore, the end cover includes a spline shaft, a terminal block, and a cover body. The electrical control box is disposed on the back side of the cover body, and the spline shaft is disposed on the front side of the cover body. The spline shaft is adapted to be inserted into the spline groove, and a terminal block is installed inside the spline shaft. The electrical control box is connected to several excitation winding circuits through the terminal block.

[0023] Furthermore, the fan blades are made of metal and are arched in shape.

[0024] This utility model has the following advantages:

[0025] This invention discloses a fresh air exchange device that uses a central stator to generate an excitation rotating magnetic field, driving an outer rotor to rotate within the main housing. The outer rotor is eccentrically positioned, and multiple retractable movable blades are arranged on its outer side. As the outer rotor rotates, the volume between adjacent movable blades continuously changes, thus pumping out airflow. Simultaneously, dust on the surface of the movable blades is removed by the outer rotor, achieving a self-cleaning effect. Compared to existing axial flow fans, this invention offers better durability, higher output power, and simpler maintenance, solving the problem of difficult dust cleaning in existing ventilation devices. Attached Figure Description

[0026] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0027] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0028] Figure 1 A perspective view of the fresh air exchange device provided by this utility model;

[0029] Figure 2 A three-dimensional view of the internal structure of the fresh air exchange device provided by this utility model;

[0030] Figure 3 A perspective view of the center stator provided by this utility model;

[0031] Figure 4 A perspective view of the external rotor provided for this utility model;

[0032] Figure 5 A perspective view of the movable blades provided for this utility model;

[0033] Figure 6 A perspective view of the end cap provided for this utility model;

[0034] Figure 7 A perspective view of the main unit housing provided for this utility model;

[0035] In the diagram: 1. Main unit housing; 11. Housing; 12. Eccentric shaft; 13. Handle; 14. Air inlet; 15. Air outlet; 2. Scissor bracket; 3. Electrical control box; 4. Outer rotor; 41. Rotary wheel; 42. Permanent magnet; 43. Center slot; 44. Slot; 45. Scraper nozzle; 5. Center stator; 51. Fixed bracket; 52. Excitation winding; 53. Base; 54. Splined groove; 6. Movable blade; 61. Fan blade; 62. Rounded corner; 63. Stop block; 7. End cover; 71. Splined shaft; 72. Terminal block; 73. Cover. Detailed Implementation

[0036] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] Please refer to this as well. Figures 1-7 This utility model discloses a fresh air exchange device, which adopts a blade pump structure and uses retractable blades to compress air and pump out airflow. It has the technical effects of high output power, high durability and self-cleaning blades. The technical solution disclosed in this utility model will be described below by way of specific embodiments.

[0038] In a specific embodiment of this utility model, the fresh air exchange device mainly includes a main unit housing 1, an outer rotor 4, a central stator 5, and movable blades 6. The outer rotor 4 is rotatably mounted at an eccentric position inside the main unit housing 1. Several movable blades 6 are movably inserted into the outside of the outer rotor 4. The ends of the movable blades 6 contact and slide against the inner wall of the main unit housing 1, which has a smooth arc surface. Therefore, the movable blades 6 extend and retract with the rotation of the outer rotor 4, scraping away surface dust. On the other hand, a scissor bracket 2 is installed at the bottom of the main unit housing 1 to support it. The scissor bracket 2 can be folded to save storage space for the air exchange device. An end cover 7 is provided at the top of the main unit housing, and an electrical control box 3 is installed on the end cover 7. Based on this structure, the tail end of the central stator 5 is fixed to the end cover 7 and electrically connected to the electrical control box 3. The head end of the central stator 5 is inserted into the center of the outer rotor 4. When the central stator 5 is energized, it generates a rotating magnetic field, thereby driving the outer rotor 4 to rotate.

[0039] In this embodiment, the end cover 7 includes a splined shaft 71, a terminal block 72, and a cover body 73. The electrical control box 3 is disposed on the back side of the cover body 73, and the splined shaft 71 is disposed on the front side of the cover body 73. The splined shaft 71 is adapted to be inserted into the spline groove 54 to fix and install the center stator 5. The terminal block 72 is installed inside the splined shaft 71. The electrical control box 3 is electrically connected to several excitation windings 52 through the terminal block 72, thereby supplying power to the excitation windings 52 to form an excitation rotating magnetic field. It should be noted that the electrical control box 3 can be connected to three-phase power and the rotation speed of the rotating magnetic field can be adjusted using a frequency converter.

[0040] In this embodiment, the outer rotor 4 includes a rotating wheel 41, a central groove 43, and a scraper 45. The central groove 43 is located at the center of the rotating wheel 41, and several permanent magnets 42 are arranged circumferentially within the central groove 43 to interact with the rotating magnetic field, thereby driving the rotating wheel 41 to rotate at high speed using the central stator 5. Several slots 44 are evenly arranged tangentially on the outside of the rotating wheel 41, and a movable blade 6 is slidably inserted into each slot 44. A scraper 45 is provided at the outer end of the slot. The movable blade 6 always passes through the scraper 45 during its movement, thereby effectively scraping away dust and droplets from the surface of the movable blade 6, giving the movable blade 6 a self-cleaning function.

[0041] In this embodiment, the center stator 5 includes a fixed bracket 51, an excitation winding 52, a base 53, and a spline groove 54. The spline groove 54 is located at the center of the base 53. The base 53 is connected to the end of the fixed bracket 51. Several excitation windings 52 are installed on the outside of the fixed bracket 51. When the excitation windings 52 are energized, they generate a magnetic field to drive the permanent magnet 42 to move.

[0042] In this embodiment, the fan blade 61 is made of metal, which has good thermal conductivity. By contacting the air, the fan blade 61 can effectively carry away the resistance heat generated by the winding. At the same time, the fan blade 61 is designed in an arch shape, which can improve the structural strength of the fan blade 61 and help reduce the weight of the fan blade 61.

[0043] In this embodiment, the movable blade 6 includes a fan blade 61, a rounded corner 62, and a stop 63. The stop 63 is provided at the tail end of the fan blade 61 to prevent the fan blade 61 from coming out of the slot. The fan blade 61 is provided at the head end with a rounded corner 62, which slides along the inner wall of the main housing 1, thereby reducing the scratches on the inner wall of the main housing 1 by the movable blade 6 during the sliding process.

[0044] In some embodiments, the housing 1 includes a housing 11 and an eccentric shaft 12. A pair of handles 13 are symmetrically arranged on both sides of the housing 11. The handles 13 can be used to install the scissor bracket 2, or to lift the housing 11 after folding the scissor bracket 2. Inside the housing 11, the eccentric shaft 12 is provided, and a rotating wheel 41 is rotatably mounted on the eccentric shaft 12. The rotating wheel 41 is located near the air outlet 15, so that when the rotating wheel 41 rotates, the volumetric compressed airflow is changed by the fan blades 61.

[0045] Although the present invention has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A fresh air ventilation device, characterized in that include: The main body housing (1) has a scissor bracket (2) installed at the bottom and an end cover (7) installed at the top. An electrical control box (3) is installed on the end cover (7). The outer rotor (4) is rotatably positioned at an eccentric position inside the main housing (1) at its center. Several movable blades (6) are movably inserted into the outside of the outer rotor (4), and the ends of the movable blades (6) are in contact with the inner wall of the main housing (1). The center stator (5) is fixedly mounted on the end cover (7) and connected to the circuit of the electrical control box (3). The head end of the center stator (5) is inserted into the center of the outer rotor (4). The central stator (5) generates a rotating magnetic field when energized, and drives the outer rotor (4) to rotate. The movable blade (6) performs telescopic motion as the outer rotor (4) rotates, and scrapes off the dust on the surface through the outer rotor (4).

2. The fresh air exchange device as described in claim 1, characterized in that, The movable blade (6) includes a fan blade (61), a rounded corner (62) and a stop (63). The fan blade (61) is provided with a stop (63) at its tail end and a rounded corner (62) at its head end. The rounded corner (62) slides along the inner wall of the main housing (1).

3. The fresh air exchange device as described in claim 1, characterized in that, The outer rotor (4) includes: The rotating wheel (41) has several slots (44) evenly arranged on its exterior along the tangential direction, and the movable blade (6) is slidably inserted into each of the slots (44). A central groove (43) is located at the axis of the rotating wheel (41), and a plurality of permanent magnets (42) are arranged circumferentially on the inner wall of the central groove (43). A scraper (45) is disposed at the outer end of the slot (44) and is adapted to scrape dust and droplets from the surface of the movable blade (6).

4. The fresh air exchange device as described in claim 3, characterized in that, The slot (44) passes through the wheel (41) and communicates with the center slot (43).

5. The fresh air exchange device as described in claim 3, characterized in that, The main unit housing (1) includes: The housing (11) has a pair of handles (13) symmetrically arranged on both sides, and the scissor bracket (2) is installed on the pair of handles (13). The housing (11) has an air inlet (14) and an air outlet (15) on the front side. An eccentric shaft (12) is disposed inside the housing (11), and a rotating wheel (41) is rotatably disposed on the eccentric shaft (12), the rotating wheel (41) being located near the air outlet (15).

6. The fresh air exchange device as described in claim 3, characterized in that, The central stator (5) includes a fixed bracket (51), an excitation winding (52), a base (53), and a spline groove (54). The spline groove (54) is located at the center of the base (53). The base (53) is connected to the end of the fixed bracket (51). Several excitation windings (52) are installed on the outside of the fixed bracket (51). When the excitation windings (52) are energized, they generate a magnetic field to drive the permanent magnet (42) to move.

7. The fresh air exchange device as described in claim 6, characterized in that, The end cover (7) includes a spline shaft (71), a terminal block (72) and a cover body (73). The electrical control box (3) is disposed on the back side of the cover body (73). The spline shaft (71) is disposed on the front side of the cover body (73). The spline shaft (71) is adapted to be inserted into the spline groove (54), and the terminal block (72) is installed inside the spline shaft (71). The electrical control box (3) is connected to several excitation windings (52) through the terminal block (72).

8. The fresh air exchange device as described in claim 2, characterized in that, The fan blade (61) is made of metal and is arched in shape.

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