Liftable ventilating fan

Abstract

A liftable ventilating fan comprises a machine shell, a motor, fan blades and an air guide panel, a motor support is arranged in the machine shell, the motor is further arranged in the motor support, and a rotating shaft of the motor is connected with an axial driving column; the air guide panel is provided with a shaft sleeve, the shaft sleeve is sleeved on the axial driving column, and an axial guide limiting structure is arranged between the shaft sleeve and the motor bracket / shell; the shaft sleeve and the axial driving column achieve axial movement of the air guide panel relative to the motor support / machine shell through the threaded connection matching relation of the internal threads and the external threads and the axial guide limiting structure at the same time, and therefore the air guide panel can open and close an inner hole of the machine shell. The air guide panel and the machine shell are of a split type structure, and the air guide panel is driven by power of the motor, so that the air guide panel can ascend and descend relative to the machine shell, and then the inner hole of the machine shell is opened and closed in cooperation with startup and shutdown, so that winged insects and other foreign objects are prevented from entering a room through the ventilating fan; and the ventilating fan is protected from being affected by foreign objects, and the service life of the ventilating fan is prolonged.

Description

Technical Field

[0001] The utility model relates to a ventilation fan, in particular to a liftable ventilation fan. Background Art

[0002] As technology develops, people pay more and more attention to the quality of life, and the quality of air is closely related to people's health. However, in order to reduce noise, insulate heat and prevent air leakage, modern buildings often use special building materials to create airtight spaces. As a result, the air exchange volume is insufficient, making it impossible for pollutants that are harmful to the human body to be discharged in a timely and effective manner.

[0003] Therefore, a ventilation fan is usually installed to solve the above problems. Existing ventilation fans usually include a casing, a motor, a fan blade and an air guide panel. The fan blade is driven by the motor to rotate, thereby bringing indoor air out to the outside. The air guide panel has a decorative effect on the ventilation fan. Otherwise, the parts inside the ventilation fan can be seen visually, resulting in a low aesthetics. In addition, the air guide panel has a certain flow-guiding effect on the wind generated by the rotation of the fan blade, reducing the diameter of the air inlet and increasing the wind speed. In this type of ventilation fan currently available on the market, the air guide panel is fixed relative to the casing, and there is a spacing space between the air guide panel and the casing. This spacing space is the air inlet. In actual application, we found that flying insects can easily enter and exit indoors and outdoors through the spacing space. Moreover, the fixed air guide panel cannot further adjust the size of the spacing space, lacking a humanized experience. Summary of the invention

[0004] The utility model aims to solve the existing technical problem by providing a liftable ventilation fan, which enables the air guide panel to be liftable relative to the casing, so that the air inlet can be opened and closed autonomously to prevent flying insects from entering and exiting, and at the same time, the size of the air inlet can be adjusted.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] The utility model discloses a liftable ventilation fan, comprising a casing, a motor, a fan blade and an air guide panel, the casing being a cylindrical structure with two ends through, a motor bracket being provided in the casing, the motor being fixed in the motor bracket, and a rotating shaft of the motor being connected to the fan blade, the fan blade being located at one end through which the casing passes; a motor is also provided in the motor bracket, and the rotating shaft of the motor is connected to an axial driving column; the air guide panel is located at the other end through which the casing passes, a shaft sleeve is provided on the air guide panel, the shaft sleeve is sleeved on the axial driving column, and an axial guiding limiting structure is provided between the shaft sleeve and the motor bracket / casing; a screw connection matching relationship between the shaft sleeve and the axial driving column is achieved through an internal thread and an external thread, and at the same time, through the axial guiding limiting structure, an axial movement of the air guide panel relative to the motor bracket / casing is achieved, so that the air guide panel can close the inner hole of the casing, or open the inner hole of the casing, thereby forming an air inlet between the air guide panel and the casing.

[0007] The shaft sleeve is provided with an internal thread, and the axial driving column is provided with an external thread.

[0008] The ventilation fan of the utility model limits the air guide panel through the axial guide limiting structure, so that the air guide panel cannot perform circumferential rotational movement relative to the casing or the motor bracket. Therefore, when the motor drives the axial driving column with external threads to rotate, the air guide panel performs axial movement relative to the casing or the motor bracket, and then the size of the air inlet between the air guide panel and the casing can be adjusted. When the size of the air inlet is zero, the ventilation fan is in an off state, and the air guide panel is entirely in an inner hole that passes through the casing, thereby closing the inner hole and preventing foreign objects such as flying insects from entering; when the size of the air inlet is greater than zero, the ventilation fan is in an on state, thereby ventilating the indoor space.

[0009] The axial guide limiting structure includes a plurality of guide edges evenly distributed circumferentially arranged on the outer wall of the sleeve, and a motor seat with a plurality of guide grooves arranged on the motor bracket. The sleeve is inserted in the motor seat as a whole, and the plurality of guide edges are inserted in the plurality of guide grooves in a one-to-one matching manner.

[0010] Preferably, there are four guide edges.

[0011] The utility model limits and guides the four guide edges and the four corresponding matching guide grooves, so that the wind guide panel is more stable when it is lifted and moved, and horizontal imbalance, vibration and jamming are avoided. Moreover, the guide edges are limited by the guide grooves, so that the wind guide panel cannot rotate synchronously with the axial drive column, so that the guide sleeve of the guide panel and the axial drive column undergo relative rotational movement, and then the guide plate is successfully displaced in the axial direction.

[0012] The guide groove is arranged in a convex ridge protruding from the outer wall of the motor seat. The motor seat is integrally embedded and fixed in a fixing groove of the motor bracket. The fixing groove has a slot for accommodating the convex ridge. The motor is embedded and installed in the motor seat.

[0013] The motor seat and motor bracket are designed as a split structure, which will not cause complicated procedures for installation and will be more convenient for later maintenance.

[0014] The motor bracket is provided with a controller, and the decorative cover covers the motor bracket, thereby covering the controller.

[0015] The decorative cover covers the controller on the motor bracket to protect the controller and thus extend its service life.

[0016] The controller is remotely controlled via an external remote controller or a mobile phone APP.

[0017] The lifting and lowering of the air guide panel can be controlled remotely, making it convenient to operate it anytime and anywhere.

[0018] The inner wall of the inner hole of the casing has a step hole at one end of the air guide panel, the air guide panel matches in the step hole, and the bottom surface of the air guide panel can be sealed and attached to the step surface formed between the step hole and the inner hole of the casing.

[0019] The cooperation between the step surface and the air guide panel makes the air guide panel more sealed when closing the inner hole of the casing, thereby preventing foreign objects such as flying insects from entering or exiting.

[0020] The technical effects that can be achieved by the utility model are:

[0021] The utility model discloses a liftable ventilation fan, wherein the air guide panel and the casing are of a split structure and are driven by the power of a motor so that the air guide panel can be lifted relative to the casing, and then the inner hole of the casing can be opened and closed in coordination with turning the machine on and off, thereby preventing foreign objects such as flying insects from entering the room through the ventilation fan, and also protecting the ventilation fan itself from being easily affected by foreign objects, thereby extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional diagram of the utility model of the liftable ventilation fan;

[0023] Figure 2 It is a cross-sectional view of the utility model of the liftable ventilation fan;

[0024] Figure 3 It is a three-dimensional diagram of the liftable ventilating fan of the utility model from one viewing angle;

[0025] Figure 4 It is a three-dimensional diagram of the liftable ventilating fan of the utility model from another perspective. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0027] See also Figures 1 to 4 The utility model provides a liftable ventilation fan, comprising a casing 1, a motor (not shown in the figure), a fan blade (not shown in the figure) and an air guide panel 2. The casing 1 is a cylindrical structure with two ends connected, and a motor bracket 3 is provided in the casing 1. The motor (not shown in the figure) is fixed in the motor bracket 3, and the rotating shaft of the motor (not shown in the figure) is connected to the fan blade (not shown in the figure), and the fan blade (not shown in the figure) is located at one end through which the casing 1 is connected; a motor (not shown in the figure) is also provided in the motor bracket 3, and the rotating shaft of the motor (not shown in the figure) is connected to an axial driving column 4; the air guide panel 2 is located at the other end through which the casing 1 is connected, that is to say, the air guide panel 2 and the fan blade (not shown in the figure) are located in the inner hole of the casing at opposite sides.

[0028] A shaft sleeve 5 is provided on the air guide panel 2, and the shaft sleeve 5 is sleeved on the axial driving column 4, and an axial guiding limit structure is provided between the shaft sleeve 5 and the motor bracket 3 / casing 1; the shaft sleeve 5 has an internal thread 6, and the axial driving column 4 has an external thread 7. The shaft sleeve 5 and the axial driving column 4 are threadedly matched with each other through the internal thread 6 and the external thread 7, and at the same time, the axial movement of the air guide panel 2 relative to the motor bracket 3 / casing 1 is realized through the axial guiding limit structure, so that the air guide panel 2 can close the inner hole 8 of the casing 1, or open the inner hole 8 of the casing 1, thereby forming an air inlet 9 between the casing 1.

[0029] The ventilation fan of the utility model limits the air guide panel 2 through the axial guide limiting structure, so that the air guide panel 2 cannot perform circumferential rotational movement relative to the casing 1 or the motor bracket 3, so that when the motor (not shown in the figure) drives the axial driving column 4 with the external thread 7 to rotate, the air guide panel 2 is axially moved relative to the casing 1 or the motor bracket 3, and then the size of the air inlet 9 between the air guide panel 2 and the casing 1 is adjustable. When the size of the air inlet 9 is zero, the ventilation fan is in the off state, and the air guide panel 2 is entirely in the inner hole 8 that passes through the casing 1, thereby closing the inner hole 8 to prevent foreign objects such as flying insects from entering; when the size of the air inlet 9 is greater than zero, the ventilation fan is in the on state, thereby ventilating the indoor space.

[0030] The axial guide limiting structure includes a plurality of guide edges 10 evenly distributed on the outer wall of the shaft sleeve 5, and a motor seat 12 with a plurality of guide grooves 11 arranged on the motor bracket 3. The shaft sleeve 5 is inserted in the motor seat 12 as a whole, and the plurality of guide edges 10 are inserted in the plurality of guide grooves 11 in a one-to-one matching manner.

[0031] Preferably, there are four guide edges 10 .

[0032] The axial guide limiting structure of the utility model is limited and guided by four guide edges 10 and four corresponding matching guide grooves 11 during specific operation, that is, the motor (not shown) drives the axial drive column 4 to rotate. In principle, the sleeve 5 should rotate synchronously with the axial drive column 4, but the guide edge 10 is limited by the guide groove 11, so that the sleeve 5 cannot rotate. At this time, there is a screw connection structure between the axial drive column 4 and the sleeve 5. The screw connection structure converts the rotational kinetic energy of the axial drive column 4 into the axial displacement of the sleeve 5, so that the air guide panel 2 moves axially, and then the size of the air inlet 9 is adjustable. Moreover, the cooperation between the guide edge 10 and the guide groove 11 makes the sleeve 5 more stable when it is lifted and lowered, avoiding horizontal imbalance, vibration, and jamming.

[0033] The guide groove 11 is arranged in a convex ridge 13 protruding from the outer wall of the motor seat 12. The motor seat 12 is integrally embedded and fixed in a fixing groove 14 of the motor bracket 3. The fixing groove 14 has a card slot 15 for accommodating the convex ridge 13. The motor (not shown in the figure) is embedded and installed in the motor seat 12.

[0034] The motor base 12 and the motor bracket 3 are designed as a split structure, which does not cause complicated procedures for installation and is more convenient for subsequent maintenance.

[0035] In order to prevent the shaft sleeve 5 from interfering with the motor (not shown) in the motor seat 12 when moving up and down, the ridge 13 is extended toward the shaft sleeve 5 to form an extension section 16 , and the shaft sleeve 5 is basically displaced in the extension section 16 .

[0036] The motor bracket 3 is provided with a controller 17 , and a decorative cover 18 covers the motor bracket 3 , thereby covering the controller 17 .

[0037] The decorative cover 18 covers the controller 17 on the motor bracket 3 to protect the controller 17 and thus prolong the service life.

[0038] The controller 17 is remotely controlled via an external remote controller or a mobile phone APP.

[0039] The lifting and lowering of the air guide panel can be controlled remotely, making it convenient to operate it anytime and anywhere.

[0040] The inner wall of the inner hole 8 of the casing 1 has a step hole 19 at one end of the air guide panel 2, the air guide panel 2 matches in the step hole 19, and the bottom surface of the air guide panel 2 can be sealed on the step surface 20 formed between the step hole 19 and the inner hole 8 of the casing 1.

[0041] The cooperation between the step surface 20 and the air guide panel 2 makes the air guide panel 2 more sealed when closing the inner hole 8 of the casing 1, thereby preventing foreign objects such as flying insects from entering or exiting.

[0042] The working principle of the liftable ventilating fan of the utility model is described below:

[0043] In the utility model of the liftable ventilation fan, a motor (not shown in the figure) drives a fan blade (not shown in the figure) to rotate, thereby forming an axial flow wind in the casing 1, so that the indoor air enters the inner hole 8 of the casing 1 from the air inlet 9 and is discharged from one end of the fan blade (not shown in the figure).

[0044] After shutdown, the controller 17 receives a signal and triggers the motor (not shown) to work, driving the axial drive column 4 to rotate, thereby causing the air guide panel 2 to move toward the direction close to the inner hole 8 of the casing 1. Finally, the bottom surface of the air guide panel 2 fits on the step surface 20, thereby closing the inner hole 8 of the casing 1.

[0045] After starting up, the controller 17 receives the signal again, triggers the motor (not shown) to work, and drives the axial drive column 4 to rotate in the reverse direction, so that the air guide panel 2 moves in the direction away from the inner hole 8 of the casing 1, and finally stops at a suitable position. The suitable air inlet 9 can meet the current ventilation requirements, and the size of the air inlet 9 can be adjusted.

[0046] To sum up, the utility model has a liftable ventilation fan, the wind guide panel 2 and the casing 1 have a split structure, and is driven by a motor (not shown in the figure), so that the wind guide panel 2 can be lifted relative to the casing 1, and then the inner hole 8 of the casing 1 is opened and closed in coordination with the power on and off, thereby preventing foreign objects such as flying insects from entering the room through the ventilation fan, and also protecting the ventilation fan itself from being easily affected by foreign objects, thereby extending its service life.

[0047] The above is a detailed introduction to the liftable ventilation fan provided in the embodiment of the utility model. Specific examples are used in this article to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the technical solution disclosed by the utility model. At the same time, for general technicians in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation of the utility model.

Claims

1. A liftable ventilating fan, comprising a casing, a motor, a fan blade and an air guide panel, wherein the casing is a cylindrical structure with two ends connected, a motor bracket is provided in the casing, the motor is fixed in the motor bracket, and the rotating shaft of the motor is connected to the fan blade, and the fan blade is located at one end of the casing through which the fan blade is connected, and the characteristics are: A motor is also provided in the motor bracket, and the rotating shaft of the motor is connected to an axial driving column; the air guide panel is located at the other end of the through-hole of the casing, and a shaft sleeve is provided on the air guide panel, and the shaft sleeve is sleeved on the axial driving column, and an axial guiding limit structure is provided between the shaft sleeve and the motor bracket / casing; the shaft sleeve and the axial driving column are threadedly matched through the internal thread and the external thread, and at the same time, through the axial guiding limit structure, the axial movement of the air guide panel relative to the motor bracket / casing is realized, so that the air guide panel can close the inner hole of the casing, or open the inner hole of the casing, thereby forming an air inlet between the casing.

2. A liftable ventilating fan according to claim 1, characterized in that: The shaft sleeve is provided with an internal thread, and the axial driving column is provided with an external thread.

3. The liftable ventilating fan according to claim 1, characterized in that: The axial guide limiting structure includes a plurality of guide edges evenly distributed circumferentially arranged on the outer wall of the sleeve, and a motor seat with a plurality of guide grooves arranged on the motor bracket. The sleeve is inserted in the motor seat as a whole, and the plurality of guide edges are inserted in the plurality of guide grooves in a one-to-one matching manner.

4. The liftable ventilating fan according to claim 3, characterized in that: The guide groove is arranged in a convex ridge protruding from the outer wall of the motor seat. The motor seat is integrally embedded and fixed in a fixing groove of the motor bracket. The fixing groove has a slot for accommodating the convex ridge. The motor is embedded and installed in the motor seat.

5. A liftable ventilating fan according to claim 1, 2 or 4, characterized in that: The motor bracket is provided with a controller, and the decorative cover covers the motor bracket, thereby covering the controller.

6. The liftable ventilating fan according to claim 5, characterized in that: The controller is remotely controlled via an external remote controller or a mobile phone APP.

7. The liftable ventilating fan according to claim 1, characterized in that: The inner wall of the inner hole of the casing has a step hole at one end of the air guide panel, the air guide panel matches in the step hole, and the bottom surface of the air guide panel can be sealed and attached to the step surface formed between the step hole and the inner hole of the casing.

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