Novel indoor ventilator

Abstract

The utility model provides a novel indoor ventilator which comprises a bottom shell, an air net cover and an air draft device, an air outlet cavity is defined in the bottom shell, the air draft device is installed in the air cavity, the front end face of the bottom shell is provided with an air inlet communicated with the air cavity, the side face or the back face of the bottom shell is provided with an air outlet, and the air net cover is arranged on the front end face of the bottom shell in a covering mode. The air mesh cover is provided with a ventilation grille corresponding to the air outlet, the air draft device comprises a motor and an impeller, the impeller comprises a front blade structure, a blade seat and a rear blade structure, the front blade structure and the rear blade structure are arranged on the front side and the rear side of the blade seat respectively, and the motor is connected with the blade seat to drive the blade seat to rotate. The indoor ventilating fan is provided with the front blade structure and the rear blade structure, the functions of pumping and discharging air and circulating indoor air are achieved through the front blade structure, the functions of blowing air to the motor and dissipating heat are achieved through the rear blade structure, and the problem of heat accumulation during working of the motor is solved.

Description

[Technical field]

[0001] The utility model relates to a novel indoor ventilation fan. [Background technology]

[0002] Indoor ventilation fans are usually installed on the wall, and the indoor air is transported to the outside through the rotation of the fan blades to achieve the purpose of indoor and outdoor air circulation, which helps to purify the indoor air. As mentioned above, ventilation fans are usually installed on the wall, and the internal motor is in an unventilated state. The rotation of the fan blades will have a slight cooling effect, but the effect is not significant. When working for a long time, the motor will accumulate heat seriously and there is a risk of burning out. [Contents of the utility model]

[0003] The utility model aims to overcome the above problems and provides a novel indoor ventilation fan, which solves the problem of motor burning due to heat accumulation.

[0004] To achieve the above-mentioned purpose, the utility model provides a novel indoor ventilation fan, which includes a base shell, a wind mesh cover and an exhaust device. The bottom shell defines an air outlet cavity inside, and the exhaust device is installed in the air cavity. The front end surface of the bottom shell is provided with an air inlet connected to the air cavity, and the side or back side of the bottom shell is provided with an air outlet. The wind mesh cover is provided on the front end surface of the bottom shell, and a ventilation grille corresponding to the air outlet is provided on the wind mesh cover. The exhaust device includes a motor and an impeller, and the impeller includes a front blade structure, a blade seat and a rear blade structure. The front blade structure and the rear blade structure are respectively provided on the front and rear sides of the blade seat, and the motor is connected to the blade seat to drive it to rotate.

[0005] In one or more embodiments, the blade seat includes a protrusion and an annular step arranged around the protrusion, the front blade structure is arranged on the front side of the annular step and around the protrusion, the rear blade structure is arranged on the rear side of the annular step, and the middle part of the protrusion is provided with an axial connection hole connected to the rotating shaft of the motor.

[0006] In one or more embodiments, the raised portion is provided with a plurality of hollow heat dissipation holes, and the shape of the hollow heat dissipation holes is one of circular, triangular, trapezoidal, and fan-shaped.

[0007] In one or more embodiments, the front leaf structure and the rear leaf structure are both composed of multiple arc-shaped leaves.

[0008] In one or more embodiments, the bottom shell is provided with a device shell on one side of the wind cavity, a control module is arranged inside the device shell, a wire hole is arranged between the device shell and the wind cavity, and the power cord of the motor enters the device shell through the wire hole and is electrically connected to the control module.

[0009] In one or more embodiments, the front side of the bottom shell has a mounting surface, a plurality of mounting holes are formed on the mounting surface, and the wind mesh cover is sleeved on the mounting surface and buckled with the mounting surface.

[0010] In one or more embodiments, the motor is a shaded-pole motor.

[0011] Compared with the background technology, the utility model has the following effects: the indoor ventilation fan has a front blade structure and a rear blade structure, the front blade structure realizes the function of exhausting air and circulating indoor air, and the rear blade structure realizes the function of blowing and cooling the motor, solving the problem of heat accumulation during motor operation. In addition, the motor adopts a shaded pole motor, which is small in size and does not occupy internal space, which helps to reduce the overall volume of the ventilation fan and reduce production costs.

Brief Description of the Drawings

[0012] Figure 1 This is a schematic structural diagram of an indoor ventilation fan according to an embodiment of the utility model;

[0013] Figure 2 It is a schematic diagram of the structure of the shell of an embodiment of the utility model. [Specific implementation method]

[0014] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0015] Please see attached Figure 1-2 The present application provides a novel indoor ventilation fan, which includes a bottom shell 1, a wind mesh cover 2 and an exhaust device. The bottom shell 1 defines an air outlet cavity 3 inside, and the exhaust device is installed in the air cavity. The front end face of the bottom shell 1 is provided with an air inlet connected to the air cavity, and the side or back side of the bottom shell is provided with an air outlet 4. The wind mesh cover 2 is provided on the front end face of the bottom shell 1, and a ventilation grille corresponding to the air outlet is provided on the wind mesh cover. The ventilation grille can divert air entering and can prevent foreign matter from entering the air cavity. The exhaust device includes a motor 5 and an impeller. The impeller includes a front blade structure 6, a blade seat and a rear blade structure 7. The front blade structure and the rear blade structure are respectively arranged on the front and rear sides of the blade seat. The motor 5 is connected to the blade seat to drive it to rotate. The front blade structure is used to draw air to achieve the purpose of indoor and outdoor air circulation, and the rear blade structure blows air to the motor through rotation to achieve the function of blowing and heat dissipation and avoid heat accumulation in the motor. Preferably, the motor is a shaded-pole motor. The advantages of using a shaded-pole motor are that it is small in size and does not take up space, which helps to reduce the size of the ventilation fan as a whole and helps to reduce production costs.

[0016] The blade seat includes a protrusion 8 and an annular step 9 arranged around the protrusion. The front blade structure 6 is arranged on the front side of the annular step 9 and around the protrusion. The rear blade structure 7 is arranged on the rear side of the annular step. The obstruction of the annular step can avoid mutual interference between the front blade structure and the rear blade structure. The middle part of the protrusion is provided with an axial connection hole connected to the rotating shaft of the motor.

[0017] The raised portion 8 is provided with a plurality of hollow heat dissipation holes 10, which are in the shape of a circle, a triangle, a trapezoid, or a fan, and the heat dissipation holes can allow air to pass through to reach the position of the rear blade structure. The front blade structure 6 and the rear blade structure 7 are both composed of multiple arc-shaped blades, and the front blade structure, the blade seat, and the rear blade structure are integrally formed by injection molding.

[0018] The bottom shell is located on one side of the wind cavity 3 and is provided with a device shell 11, a control module 12 is arranged inside the device shell, and a wire hole 13 is arranged between the device shell and the wind cavity. The power line of the motor 5 enters the device shell through the wire hole and is electrically connected to the control module, so as to facilitate the introduction of the power line of the motor into the control module.

[0019] The front side of the bottom shell 1 has a mounting surface 101, and a plurality of mounting holes 102 are opened on the mounting surface. The user uses screws to pass through the mounting holes. The wind mesh cover 2 is mounted on the mounting surface and buckled with the mounting surface. Specifically, a buckle is provided on the wind mesh cover, and a buckle position matching the buckle is provided on the mounting surface. After the user fixes the mounting surface with screws, the wind mesh cover is mounted on the mounting surface to cover the mounting surface and the mounting holes, thereby achieving an aesthetic effect.

[0020] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed in the present invention should be included in the protection scope recorded in the claims.

Claims

1. A novel indoor ventilation fan, characterized in that: The invention comprises a bottom shell (1), a wind net cover (2) and an exhaust device, wherein an air outlet cavity (3) is defined inside the bottom shell (1), the exhaust device is installed in the air outlet cavity, the front end surface of the bottom shell (1) is provided with an air inlet connected to the air outlet cavity, the side or back side of the bottom shell is provided with an air outlet (4), the wind net cover (2) is provided on the front end surface of the bottom shell (1), a ventilation grille corresponding to the air outlet is provided on the wind net cover, the exhaust device comprises a motor (5) and an impeller, the impeller comprises a front blade structure (6), a blade seat and a rear blade structure (7), the front blade structure and the rear blade structure are respectively provided at The motor (5) is connected to the blade seat on both sides of the front and rear of the blade seat to drive the blade seat to rotate. The bottom shell is provided with a device shell (11) on one side of the wind cavity (3). A control module (12) is arranged inside the device shell. A wire hole (13) is arranged between the device shell and the wind cavity. The power line of the motor (5) enters the device shell through the wire hole and is electrically connected to the control module. The front side of the bottom shell (1) has a mounting pressure surface (101), and a plurality of mounting holes (102) are opened on the mounting pressure surface. The wind net cover (2) is sleeved on the mounting pressure surface and buckled with the mounting pressure surface.

2. A novel indoor ventilation fan according to claim 1, characterized in that: The blade seat comprises a raised portion (8) and an annular step (9) arranged around the raised portion, the front blade structure (6) is arranged on the front side of the annular step (9) and around the raised portion, the rear blade structure (7) is arranged on the rear side of the annular step, and a shaft connection hole is provided in the middle of the raised portion for connection with the rotating shaft of the motor.

3. A novel indoor ventilation fan according to claim 2, characterized in that: The raised portion (8) is provided with a plurality of hollow heat dissipation holes (10), and the shape of the hollow heat dissipation holes is one of a circle, a triangle, a trapezoid, and a fan.

4. A novel indoor ventilation fan according to claim 2, characterized in that: The front leaf structure (6) and the rear leaf structure (7) are both composed of a plurality of arc-shaped leaves.

5. The novel indoor ventilation fan according to claim 1 is characterized in that: The motor is a shaded-pole motor.

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