Double-motor ventilator

Abstract

The utility model discloses a double-motor ventilating fan, and belongs to the technical field of electric appliances. A double-motor ventilator comprises a box seat, a box cover, a first fan, a second fan and a control device, the first fan, the second fan and the control device are detachably mounted in the box seat, and the box seat is detachably connected with the box cover; a ventilation port is formed in one side of the box seat, is positioned between the first fan and the second fan, and is communicated with the first fan and the second fan through ventilation channels respectively; the first draught fan and the second draught fan can convey airflow to the ventilation opening. The control device is located between the first fan and the second fan, electrically connected with the first fan and the second fan and used for controlling operation of the first fan and the second fan, and therefore the three operation states that the first fan and the second fan independently operate and the first fan and the second fan simultaneously operate are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the electrical technology field more specifically, relate to a double motor's ventilation fan. BACKGROUND

[0002] With people's requirement to indoor air quality is improving ceaselessly, ventilation fan's use is more and more widely;Ventilation fan drives airflow through motor, makes indoor and outdoor air exchange, and the purpose of ventilation is to remove the dirty air in the room, adjust temperature, humidity and feel effect.

[0003] The existing ventilation fan usually only single motor drives airflow from single channel to single ventilation port, and the ventilation fan operating power is limited, and only the basic function of ventilation can be completed;At the same time, the flow passage design is often relatively simple, and the airflow noise is large when the airflow passes through the flow passage;For example, a ventilation fan (CN202321454197.7) disclosed in Chinese invention patent literature, a plurality of first blades and a plurality of second blades are arranged to drive the air outside to be sucked into the second flow space along the axial direction of the impeller, thereby achieving the effect of increasing the air volume;However, this method cannot solve the collision between the airflow sucked by the fan and the flow passage when the airflow passes through the flow passage, and may appear turbulence, vortex and other phenomena, resulting in large energy loss and noise.

[0004] Therefore, we need a double motor ventilation fan, which has high ventilation efficiency and lower noise, and improves air quality and living comfort. UTILITY MODEL CONTENTS

[0005] The utility model provides a double motor ventilation fan, which is easy to disassemble and assemble, and can be used in different scenes by switching the operation of different fans. The ventilation fan has high ventilation efficiency and lower noise, and can improve the comfort of use.

[0006] The double motor ventilation fan of the utility model, including box seat, box cover and detachable installation in the inside of box seat first fan, second fan and control device, box seat and box cover are detachably connected;The side of box seat is provided with ventilation port, and the ventilation port is located between the first fan and the second fan, and is communicated with the first fan and the second fan through the ventilation channel respectively;The first fan and the second fan can respectively transport airflow to the ventilation port.

[0007] The surface of the box cover is provided with a pair of air inlets matched with the first fan and the second fan respectively, for sucking air.

[0008] The control device is located between the first fan and the second fan, and is electrically connected with the first fan and the second fan respectively, for controlling the operation of the first fan and the second fan, so as to achieve three operation states of the first fan and the second fan operating separately and the first fan and the second fan operating simultaneously.

[0009] As a further improvement of the utility model, the air exchange passage includes a first air exchange passage and a second air exchange passage, the first air exchange passage is communicated with the first fan and the air exchange port respectively, and the second air exchange passage is communicated with the second fan and the air exchange port respectively; the first air exchange passage and the second air exchange passage divide the air exchange port into two areas respectively.

[0010] As a further improvement of the utility model, the first air exchange passage includes a first air gathering part, a first air conveying part and a plurality of first fixing plates, the first air gathering part is located at the outer periphery of the first fan and is used for gathering the airflow sucked by the first fan; the first air conveying part is an arc-shaped pipeline, the arc-shaped transition reduces flow separation and improves airflow stability; one end of the first air conveying part is communicated with the first air gathering part, and the other end is communicated with one half area of the air exchange port; the first fixing plates are fixedly connected with the first air gathering part and the inner wall of the box seat respectively and are used for fixing the first air exchange passage to avoid swinging of the first air exchange passage under the action of airflow.

[0011] As a further improvement of the utility model, the second air exchange passage includes a second air gathering part, a second air conveying part and a plurality of second fixing plates, the second air gathering part is located at the outer periphery of the second fan and is used for gathering the airflow sucked by the second fan; one end of the second air conveying part is communicated with the second air gathering part, and the other end is communicated with one half area of the air exchange port; the second fixing plates are fixedly connected with the second air gathering part and the inner wall of the box seat respectively and are used for fixing the second air exchange passage to avoid swinging of the second air exchange passage under the action of airflow.

[0012] As a further improvement of the utility model, the width of the first air conveying part gradually decreases from the first air gathering part to the air exchange port, which is used for improving the airflow speed inside the first air conveying part and simultaneously lowering the static pressure inside the first air conveying part to form a local low-pressure area, thereby helping to enhance the air intake efficiency of the first fan.

[0013] As a further improvement of the utility model, the width of the second air conveying part gradually increases from the second air gathering part to the air exchange port, which is used for lowering the airflow speed inside the second air conveying part and simultaneously making the airflow inside the second air conveying part diffuse gently to reduce friction loss with the pipe wall, thereby achieving the effect of vibration and noise reduction.

[0014] As a further improvement of the utility model, a connecting hole one is formed in the bottom of the side of the first air gathering part close to the control device, which is used for penetrating wires to connect the first fan and the control device respectively.

[0015] As a further improvement of the utility model, a connecting hole two is formed in the bottom of the side of the second air gathering part close to the control device, which is used for penetrating wires to connect the second fan and the control device respectively.

[0016] As a further improvement of the utility model, a filter screen is arranged on the inner wall of the air exchange port and is used for blocking sundries from entering the inside of the box seat.

[0017] Compared with the prior art, the beneficial effects of the utility model lie in: the utility model discloses a double-motor ventilation fan, which is provided with a pair of fans corresponding to two ventilation channels, so that the ventilation volume of the ventilation fan is improved, and the ventilation efficiency is improved;The control device controls the operation of the first fan and the second fan, so that the first fan and the second fan can operate independently or simultaneously, and the ventilation fan can be applied to a wider application scenario;The first fan is matched with the first ventilation channel, so that the gas is gathered in the first gas gathering part and then is transported to the ventilation channel through the first gas conveying part with gradually decreasing width, the airflow speed is improved, the internal static pressure of the first gas conveying part is reduced, a local low-pressure area is formed, and the air intake efficiency is improved;The first gas conveying part is arc-shaped, so that the arc-shaped transition reduces flow separation and improves airflow stability;The second fan is matched with the second ventilation channel, so that the gas is gathered in the second gas gathering part and then is transported to the ventilation channel through the second gas conveying part with gradually increasing width, the cross section is gradually expanded, the flow speed is reduced, the airflow is diffused gently, a wider area is covered, and the low-speed airflow can reduce friction loss with the pipe wall, so that the effect of noise reduction and vibration reduction is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is a double-motor ventilation fan structure schematic view of the utility model;

[0019] Fig. 2 It is a double-motor ventilation fan box seat internal structure schematic view of the utility model;

[0020] Fig. 3 It is a double-motor ventilation fan ventilation channel structure schematic view of the utility model.

[0021] Mark explanation in the drawing:

[0022] 1 box seat, 2 box cover, 3 first fan, 4 second fan, 5 control device, 6 ventilation port, 61 filter screen, 7 ventilation channel, 71 first ventilation channel, 711 first gas gathering part, 712 first gas conveying part, 713 first fixed plate, 714 connecting hole one, 72 second ventilation channel, 721 second gas gathering part, 722 second gas conveying part, 723 second fixed plate, 724 connecting hole two. PREFERRED EMBODIMENT

[0023] Specific embodiment one: please refer to Figs. 1-3 A double-motor ventilation fan, comprising a box seat 1, a box cover 2 and a first fan 3, a second fan 4 and a control device 5 which can be detachably installed in the box seat 1, the box seat 1 and the box cover 2 are detachably connected;The box seat 1 is provided with a ventilation port 6 on one side, the ventilation port 6 is located between the first fan 3 and the second fan 4 and is communicated with the first fan 3 and the second fan 4 through a ventilation channel 7;The first fan 3 and the second fan 4 can respectively convey airflow to the ventilation port 6.

[0024] The surface of the box cover 2 has a pair of air inlets 21 that are respectively matched with the first fan 3 and the second fan 4 for drawing in gas.

[0025] The control device 5 is located between the first fan 3 and the second fan 4, and is electrically connected to the first fan 3 and the second fan 4 respectively. It is used to control the operation of the first fan 3 and the second fan 4, thereby achieving three operating states: the first fan 3 and the second fan 4 operating independently, and the first fan 3 and the second fan 4 operating simultaneously.

[0026] Specifically, such as Fig. 2 The ventilation channel 7 shown includes a first ventilation channel 71 and a second ventilation channel 72. The first ventilation channel 71 is connected to the first fan 3 and the ventilation port 6, respectively. The second ventilation channel 72 is connected to the second fan 4 and the ventilation port 6, respectively. The first ventilation channel 71 and the second ventilation channel 72 divide the ventilation port 6 into two areas, which correspond to the state in which the first fan 3 and the second fan 4 are running independently.

[0027] Specifically, such as Fig. 3 The first ventilation channel 71 shown includes a first air-gathering part 711, a first air-transmitting part 712, and several first fixing plates 713. The first air-gathering part 711 is located on the outer periphery of the first fan 3 and is used to gather the airflow drawn in by the first fan 3. The first air-transmitting part 712 is an arc-shaped pipe, and the arc transition reduces flow separation and improves airflow stability. One end of the first air-transmitting part 712 is connected to the first air-gathering part 711, and the other end is connected to half of the ventilation port 6. The first fixing plates 713 are fixedly connected to the first air-gathering part 711 and the inner wall of the housing 1, respectively, and are used to fix the first ventilation channel 71 and prevent the first ventilation channel 71 from swaying under the action of airflow.

[0028] Specifically, the second ventilation channel 72 includes a second air-gathering part 721, a second air-transmitting part 722, and several second fixing plates 723. The second air-gathering part 721 is located on the outer periphery of the second fan 4 and is used to gather the airflow drawn in by the second fan 4. One end of the second air-transmitting part 722 is connected to the second air-gathering part 721, and the other end is connected to half of the ventilation port 6. The second fixing plates 723 are fixedly connected to the second air-gathering part 721 and the inner wall of the housing 1, respectively, to fix the second ventilation channel 72 and prevent the second ventilation channel 72 from swaying under the action of airflow.

[0029] Specifically, the width of the first air conveying part 712 gradually decreases from the first air gathering part 711 to the air outlet 6, which is used to increase the air flow speed inside the first air conveying part 712 and lower the static pressure inside the first air conveying part 712, thereby forming a local low-pressure area and helping to enhance the air suction efficiency of the first fan 3; when the first fan 3 is started by the control device 5, the first fan 3 sucks in air and conveys the air along the first air conveying part 712 to the air outlet 6, and since the width of the first air conveying part 712 gradually decreases, the air exchange efficiency is higher in this mode, which is suitable for scenarios requiring high-flow air exchange.

[0030] Specifically, the width of the second air conveying part 722 gradually increases from the second air gathering part 721 to the air outlet 6, which is used to reduce the air flow speed inside the second air conveying part 722 and diffuse the air flow gently, thereby reducing the friction loss with the pipe wall of the second air conveying part 722 and achieving the effect of vibration and noise reduction; when the second fan 4 is started by the control device 5, the second fan 4 sucks in air and conveys the air along the second air conveying part 722 to the air outlet 6, and since the width of the second air conveying part 722 gradually increases, the air flow is slowed down, thus weakening the impact of the air flow with the pipe wall of the second air conveying part 722, which is suitable for scenarios requiring low noise.

[0031] Specifically, the first air gathering part 711 is provided with a connecting hole one 714 at the bottom of the side close to the control device 5, which is used to pass through wires to connect the first fan 3 and the control device 5, respectively, for the control device 5 to control the first fan 3 to operate alone.

[0032] Specifically, the second air gathering part 721 is provided with a connecting hole two 724 at the bottom of the side close to the control device 5, which is used to pass through wires to connect the second fan 4 and the control device 5, respectively, for the control device 5 to control the second fan 4 to operate alone.

[0033] Specifically, when the control device controls the first fan 3 and the second fan 4 to operate simultaneously, the first air conveying part 712 and the second air conveying part 722 work together to form a composite air flow path, thereby achieving the maximum air exchange effect; in combination with the high-flow requirement of the first fan operating alone and the low-noise requirement of the second fan operating alone, flexible application in multiple scenarios is realized.

[0034] Specifically, the inner wall of the air outlet 6 is provided with a filter screen 61, which is used to block foreign matter from entering the inside of the box seat 1 and ensure clean air; the filter screen 61 is designed to be detachable, which is convenient for regular cleaning and maintenance, improves the overall operation efficiency and service life of the system, and ensures long-term stable operation.

[0035] During use, the first fan 3 or the second fan 4 or both are started by the control device 5 according to the user's own needs, to achieve the high flow of the first fan 3 alone, the low noise requirement of the second fan 4 alone, or the maximum ventilation requirement of the composite air flow path; when the first fan 3 alone, the first fan 3 inhales the gas from the top air inlet 21 of the box cover 2, due to the gradually decreasing width of the first gas conveying part 712, the gas conveying part 712 increases the air flow velocity during conveying to the ventilation port 6, at the same time, the internal static pressure of the first gas conveying part 712 is reduced, forming a local low pressure area, thereby helping to enhance the air suction efficiency of the first fan 3, achieving the high flow mode under the single fan working; when the second fan 4 alone, the second fan 4 inhales the gas from the top air inlet 21 of the box cover 2, due to the gradually increasing width of the second gas conveying part 722, the impact of the air flow on the wall of the second gas conveying part 722 is weakened during conveying to the ventilation port 6, achieving the low noise operation mode under the single fan working; when both are started, the composite air flow path effectively improves the ventilation efficiency, achieving the maximum ventilation effect.

[0036] The above is only a preferred specific embodiment of the present application; however, the protection scope of the present application is not limited thereto. Any skilled person in the art, according to the technical scheme and the improvement concept of the present application, can make equivalent replacement or change within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A dual-motor ventilation fan, characterized in that, It includes a base (1), a cover (2), and a first fan (3), a second fan (4), and a control device (5) that are detachably installed inside the base (1). The base (1) and the cover (2) are detachably connected. A ventilation port (6) is opened on one side of the base (1). The ventilation port (6) is located between the first fan (3) and the second fan (4) and is connected to the first fan (3) and the second fan (4) through ventilation channels (7), respectively. The box cover (2) has a pair of air inlets (21) that are respectively matched with the first fan (3) and the second fan (4) for drawing in gas; The control device (5) is located between the first fan (3) and the second fan (4), and is electrically connected to the first fan (3) and the second fan (4) respectively, for controlling the operation of the first fan (3) and the second fan (4).

2. A dual-motor ventilation fan according to claim 1, characterized in that, The ventilation channel (7) includes a first ventilation channel (71) and a second ventilation channel (72). The first ventilation channel (71) is connected to the first fan (3) and the ventilation port (6) respectively, and the second ventilation channel (72) is connected to the second fan (4) and the ventilation port (6) respectively.

3. A dual-motor ventilation fan according to claim 2, characterized in that, The first ventilation channel (71) includes a first gas gathering part (711), a first gas conveying part (712) and several first fixing plates (713). The first gas gathering part (711) is located on the outer periphery of the first fan (3). One end of the first gas conveying part (712) is connected to the first gas gathering part (711), and the other end is connected to half of the ventilation port (6). The first fixing plates (713) are fixedly connected to the first gas gathering part (711) and the inner wall of the box base (1) respectively, and are used to fix the first ventilation channel (71).

4. A dual-motor ventilation fan according to claim 2, characterized in that, The second ventilation channel (72) includes a second gas gathering part (721), a second gas conveying part (722) and several second fixing plates (723). The second gas gathering part (721) is located on the outer periphery of the second fan (4) and is used to gather the airflow drawn in by the second fan (4). One end of the second gas conveying part (722) is connected to the second gas gathering part (721), and the other end is connected to half of the ventilation port (6). The second fixing plates (723) are fixedly connected to the second gas gathering part (721) and the inner wall of the box base (1) respectively, and are used to fix the second ventilation channel (72).

5. A dual-motor ventilation fan according to claim 3, characterized in that, The width of the first gas delivery section (712) gradually decreases from the first gas gathering section (711) to the gas exchange port (6).

6. A dual-motor ventilation fan according to claim 4, characterized in that, The width of the second gas delivery section (722) gradually increases from the second gas gathering section (721) to the gas exchange port (6).

7. A dual-motor ventilation fan according to claim 3, characterized in that: The first gas gathering part (711) has a connection hole (714) at the bottom of the side near the control device (5) for passing wires to connect the first fan (3) and the control device (5) respectively.

8. A dual-motor ventilation fan according to claim 4, characterized in that: The second gas gathering part (721) has a connection hole 2 (724) at the bottom of the side near the control device (5) for passing wires to connect the second fan (4) and the control device (5) respectively.

9. A dual-motor ventilation fan according to claim 1, characterized in that: The inner wall of the ventilation port (6) is provided with a filter screen (61) to prevent debris from entering the box base (1).

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