Green building ventilator

Abstract

The utility model discloses a green building ventilator, which belongs to the field of green buildings and comprises a volute, an output shaft, centrifugal fan blades, an air outlet, an air inlet pipeline structure, a power motor and a detachable sealing structure. The power motor drives the output shaft to rotate, then the centrifugal fan blades are driven to rotate, air in the volute is exhausted from the air outlet under the action of the centrifugal fan blades, meanwhile, external air is sucked in through the air inlet pipeline structure, the power motor is located in the air inlet pipeline structure, the external air can cool the power motor, and the cooling effect of the power motor is improved. And when cleaning is needed, the shell is detached from the detachable sealing structure, and the outer surface of the power motor in the air inlet pipeline structure is cleaned.

Description

Technical Field

[0001] This utility model relates to the field of green building, and in particular to a green building ventilation fan. Background Technology

[0002] Ventilation fans are frequently used inside buildings to ventilate and exchange air, keeping the air dry, ensuring good air quality, and improving people's work efficiency and living comfort. The widespread use of ventilation fans also brings various problems. For example, dust easily accumulates on the outer surface of the fan motor. Dust entering the motor can affect its normal operation and, in severe cases, even damage it.

[0003] In the prior art, patent publication number CN219829042U describes a green building ventilation fan, which includes a motor and a housing. The housing has ventilation holes, and the motor has at least one dust removal mechanism. A cooling duct is also connected to the housing, and the outlet of the cooling duct points to at least one dust removal mechanism. By combining air blowing and brush cleaning methods, the dust removal effect is effectively improved.

[0004] The above technical solution solves the problems mentioned in the background technology to a certain extent. However, the above technical solution uses a pipe that is perpendicular to the centrifugal fan casing to install on the centrifugal fan casing and uses the pipe to deliver air to the motor to dissipate heat. However, it is difficult to exhaust airflow from the pipe that is perpendicular to the centrifugal fan casing relative to the air outlet of the centrifugal fan, so the heat dissipation effect on the motor is limited. Utility Model Content

[0005] The purpose of this invention is to solve the problems mentioned in the background art by designing a green building ventilation fan.

[0006] To achieve the above objectives, the technical solution of this utility model is a green building ventilation fan, comprising a volute, an output shaft, centrifugal fan blades, an air outlet, an air inlet duct structure, a power motor, and a detachable sealing structure. The output shaft is rotatably mounted inside the volute, and centrifugal fan blades are fixedly mounted on the output shaft inside the volute. An air outlet is installed on the volute. An air inlet duct structure is installed at the center of the volute, and a power motor is installed inside the air inlet duct structure. A gap is left between the power motor and the inner wall of the air inlet duct structure. A detachable sealing structure is provided at the outer end of the air inlet duct structure. The output end of the power motor is connected to the output shaft.

[0007] Furthermore, the air inlet duct structure includes an inner air inlet pipe, a motor housing, a support frame, and an outer air inlet pipe. The inner air inlet pipe is installed at the center of the volute. The motor housing is fixedly installed at the outer end of the inner air inlet pipe. The motor housing is a cylindrical structure with an inner diameter larger than that of the power motor. Multiple support frames are installed on the outer side of the inner wall of the motor housing. The inner side of the support frame is fixedly connected to the power motor. The outer air inlet pipe is installed at the outer end of the support frame. A gap is left between the outer air inlet pipe and the outer end of the motor. The detachable sealing structure covers the open area between the motor housing and the outer air inlet pipe.

[0008] Furthermore, the detachable sealing structure is an annular cover, which is a cylindrical structure with a hole at the bottom that has the same outer diameter as the outer air inlet pipe. The opening of the annular cover is fitted onto the outer air inlet pipe, and the outer side of the inner wall of the annular cover is fitted onto the motor barrel.

[0009] Furthermore, the outer end of the support frame contacts the bottom of the barrel-shaped structure of the annular cover.

[0010] Furthermore, the annular cover and the motor barrel are connected by bolts.

[0011] Beneficial effects:

[0012] This utility model provides a green building ventilation fan with the following beneficial effects: Through its structural design, the device uses a power motor to drive the output shaft to rotate, which in turn drives the centrifugal fan blades to rotate. Under the action of the centrifugal fan blades, the air inside the volute is discharged from the air outlet, while outside air is drawn in through the air inlet duct structure. Since the power motor is located inside the air inlet duct structure, the outside air can cool the power motor. When cleaning is required, the detachable sealed structure can be removed from the casing to clean the outer surface of the power motor inside the air inlet duct structure, thus solving the problem of poor heat dissipation of the motor in the prior art. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of the green building ventilation fan described in this utility model;

[0014] Figure 2 This is a schematic diagram of the annular cover of the green building ventilation fan described in this utility model in the removed state.

[0015] Figure 3 This is a cross-sectional structural diagram of the green building ventilation fan described in this utility model.

[0016] In the diagram, 1. volute; 2. output shaft; 3. centrifugal fan blade; 4. air outlet; 5. power motor; 6. inner air inlet duct; 7. motor housing; 8. support frame; 9. outer air inlet duct; 10. annular cover. Detailed Implementation

[0017] 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.

[0018] In the description of this utility model, it should be noted that the terms "upper / lower end," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "set / set up," "sleeve," "connection," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] Please see Figure 1-3 This utility model provides a technical solution: a green building ventilation fan, including a volute 1, an output shaft 2, centrifugal fan blades 3, an air outlet 4, an air inlet duct structure, a power motor 5, and a detachable sealing structure. The output shaft 2 is rotatably installed inside the volute 1. The centrifugal fan blades 3 are fixedly mounted on the output shaft 2 inside the volute 1. The air outlet 4 is installed on the volute 1. An air inlet duct structure is installed in the center of the volute 1. The power motor 5 is installed inside the air inlet duct structure. A gap is left between the power motor 5 and the inner wall of the air inlet duct structure. A detachable sealing structure is provided at the outer end of the air inlet duct structure. The output end of the power motor 5 is connected to the output shaft 2.

[0021] In this utility model, the air inlet pipe structure includes an inner air inlet pipe 6, a motor barrel 7, a support frame 8, and an outer air inlet pipe 9. The inner air inlet pipe 6 is installed at the center of the volute 1. The motor barrel 7 is fixedly installed at the outer end of the inner air inlet pipe 6. The motor barrel 7 is a cylindrical structure with an inner diameter larger than that of the power motor 5. Multiple support frames 8 are installed on the outer side of the inner wall of the motor barrel 7. The inner side of the support frame 8 is fixedly connected to the power motor 5. The outer air inlet pipe 9 is installed at the outer end of the support frame 8. A gap is left between the outer air inlet pipe 9 and the outer end of the motor. A detachable sealing structure covers the open area between the motor barrel 7 and the outer air inlet pipe 9. In use, air is introduced through the outer air inlet pipe 9. The introduced air passes through the gap between the motor barrel 7 and the power motor 5 to cool the power motor 5 and then enters the volute 1 through the inner air inlet pipe 6.

[0022] In this utility model, the detachable sealing structure is an annular cover 10. The annular cover 10 is a cylindrical structure with a hole at the bottom that has the same outer diameter as the outer air inlet pipe 9. The opening of the annular cover 10 is fitted onto the outer air inlet pipe 9, and the outer side of the inner wall of the annular cover 10 is fitted onto the motor barrel 7. When cleaning is required, the annular cover 10 can be pulled outward to expose the power motor 5, which makes it easier to clean the power motor 5 without removing the outer air inlet pipe 9.

[0023] In this utility model, the outer end of the support frame 8 contacts the bottom of the barrel-shaped structure of the annular cover 10, thereby limiting the inward movement of the annular cover 10 through the support frame 8, thus playing a limiting role.

[0024] In this invention, the annular cover 10 and the motor barrel 7 are connected by bolts, which facilitates the disassembly of the annular cover 10.

[0025] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires, and should select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical connections between the various electrical components are completed in sequence. The detailed connection methods are well-known technologies in the field. The following mainly introduces the working principle and process, and will not describe the electrical control further.

[0026] In this implementation plan:

[0027] During operation, the power motor 5 drives the output shaft 2 to rotate, which in turn drives the centrifugal fan blade 3 to rotate. Under the action of the centrifugal fan blade 3, the air inside the volute 1 is discharged from the air outlet 4. At the same time, outside air is drawn in through the air inlet duct structure. Since the power motor 5 is located inside the air inlet duct structure, the outside air can cool the power motor 5. When cleaning is required, the detachable sealing structure is removed from the casing to clean the outer surface of the power motor 5 inside the air inlet duct structure.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A green building ventilation fan, comprising a volute (1), an output shaft (2), centrifugal fan blades (3), an air outlet (4), an air inlet duct structure, a power motor (5), and a detachable sealing structure, wherein the output shaft (2) is rotatably installed inside the volute (1), the centrifugal fan blades (3) are fixedly mounted on the output shaft (2) inside the volute (1), and the air outlet (4) is installed on the volute (1), characterized in that, An air intake duct structure is installed in the center of the volute (1), and a power motor (5) is installed inside the air intake duct structure. There is a gap between the power motor (5) and the inner wall of the air intake duct structure. A detachable sealing structure is provided at the outer end of the air intake duct structure. The output end of the power motor (5) is connected to the output shaft (2).

2. The green building ventilation fan according to claim 1, characterized in that, The air intake duct structure includes an inner air intake pipe (6), a motor barrel (7), a support frame (8), and an outer air intake pipe (9). The inner air intake pipe (6) is installed at the center of the volute (1). The motor barrel (7) is fixedly installed at the outer end of the inner air intake pipe (6). The motor barrel (7) is a cylindrical structure with an inner diameter larger than that of the power motor (5). Multiple support frames (8) are installed on the outer side of the inner wall of the motor barrel (7). The inner side of the support frame (8) is fixedly connected to the power motor (5). The outer air intake pipe (9) is installed at the outer end of the support frame (8). A gap is left between the outer air intake pipe (9) and the outer end of the motor. The detachable sealing structure covers the open area between the motor barrel (7) and the outer air intake pipe (9).

3. The green building ventilation fan according to claim 2, characterized in that, The detachable sealing structure is an annular cover (10). The annular cover (10) is a cylindrical structure with a hole at the bottom that has the same outer diameter as the outer air inlet pipe (9). The opening of the annular cover (10) is fitted onto the outer air inlet pipe (9), and the outer side of the inner wall of the annular cover (10) is fitted onto the motor barrel (7).

4. The green building ventilation fan according to claim 3, characterized in that, The outer end of the support frame (8) contacts the bottom of the barrel-shaped structure of the annular cover (10).

5. The green building ventilation fan according to claim 3, characterized in that, The annular cover (10) and the motor barrel (7) are connected by bolts.

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