CN104422056B - Air interchanger - Google Patents

Abstract

The invention discloses a ventilation device, comprising: a volute, a blower assembly, a first damper, a hollow shell and an air channel switching assembly, and the volute has a first air inlet, a second air inlet and an air outlet. The fan assembly is arranged in the volute. The first damper is pivotally arranged at the first air inlet to open or close the first air inlet. The shell is arranged on the volute, the second air inlet and the air outlet communicate with the inside of the shell, and the shell is provided with a vent and an air outlet. The air channel switching assembly is rotatably connected to the housing between a first position and a second position, in the first position the vent, the second air inlet, the air outlet and the air outlet are connected to form a first air circulation channel, in the first position In the second position, the first air inlet, the air outlet and the air vent are connected to form a second air circulation channel.

Description

Ventilator

technical field

The invention relates to the field of household appliances, in particular to a ventilation device.

Background technique

At present, there are two main ways of exchanging new and old air in air conditioners with ventilation function: one is to discharge indoor cold air to the outside, so that a negative pressure zone is formed indoors, forcing fresh outdoor air to flow into the room from the gap in the room. The other is to draw outdoor fresh air directly into the room.

The working principle of the traditional single-fan ventilation device is: use the connecting pipe connected to the fan to connect the indoor and outdoor, and connect the connecting pipe to the air outlet or air inlet of the fan to realize a single method of inhaling fresh air from the outside or exhausting air to the outside. Features. The working principle of the traditional two-way ventilation device is to connect indoor and outdoor by connecting two connecting pipes of two fans. One connecting pipe is connected to the air inlet of one fan, and the other connecting pipe is connected to the air outlet of the other fan. , to achieve suction or exhaust by turning on the corresponding fan.

The traditional two-way ventilation device has the following defects: the cost of dual fans is high, and the utilization rate of each fan is only 50%, resulting in a waste of resources. The installation of two connecting pipes requires larger installation holes, which is troublesome to install and affects the appearance of the room.

Contents of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide a ventilation device, which adopts a fan to achieve the purpose of two-way ventilation.

According to the ventilation device of the present invention, comprising: a volute, the volute has a first air inlet, a second air inlet and an air outlet; a fan assembly, the fan assembly is arranged in the volute; a first damper , the first damper is pivotally arranged at the first air inlet to open or close the first air inlet; a hollow casing, the casing is arranged on the volute, and the second air inlet The air outlet and the air outlet communicate with the inside of the housing, and the housing is provided with an air outlet and an air outlet; an air passage switching assembly, the air passage switching assembly is rotatably connected between a first position and a second position To the housing, in the first position the vent, the second air inlet, the air outlet and the air outlet are connected to form a first air circulation channel, in the second position the The first air inlet, the air outlet and the air vent are connected to form a second air circulation channel.

According to the ventilating device of the present invention, by being provided with the first air inlet, the second air inlet, the air outlet, the air outlet and the air outlet, the air outlet, the second air inlet, the air outlet and the air outlet are connected in the first position. To define the first air circulation channel, in the second position, the first air inlet, the air outlet and the vent are connected to define the second air circulation channel, and the air passes through the first air circulation channel or the second air circulation channel Circulation can achieve the purpose of exhausting indoor air to the outside or introducing outdoor air into the room, so that the ventilation device can achieve the purpose of two-way ventilation, and the ventilation device is only equipped with a fan, which reduces costs and improves resource utilization. And easy to install.

In addition, the ventilation device according to the present invention also has the following additional technical features:

According to some embodiments of the present invention, the first damper is arranged in the volute, and the first damper normally closes the first air inlet under the action of gravity. When the pressure inside the volute is lower than the pressure outside the volute, it rotates toward the inside of the volute. Therefore, the structure of the ventilation device is simple.

Further, the volute is provided with an installation hole, and the ventilation device also includes a door cover, which is detachably arranged on the installation hole to close the installation hole, and the first blocking door One end is rotatably set on the door cover. Thereby, the assembly of the first shutter is facilitated.

Optionally, the door cover is buckled and connected to the volute. Assembling of the door cover is thereby facilitated.

In some embodiments of the present invention, the ventilation device further includes a driving motor, and the driving motor drives the air channel switching assembly to rotate.

According to a specific embodiment of the present invention, the air channel switching assembly includes: a pivot shaft, the pivot shaft is rotatably arranged in the casing and one end of the pivot shaft protrudes from the casing; a second blocking door, The second shutter is fixed on the one end of the pivot shaft to open or close the air outlet; the switching door is fixed on a part of the pivot shaft inside the housing, The switching door is rotated to open or close the second air inlet. Therefore, the structure of the air channel switching assembly is simple.

Specifically, the switching door includes: a flat plate, one end of which is fixed on the pivot shaft; an arc-shaped plate, whose first end is vertically connected to the other end of the flat plate, and the arc The second end of the shaped plate bends and extends in a direction toward the pivot shaft.

Optionally, the second blocking door is formed in a sector shape.

Optionally, the fan in the fan assembly is a DC speed regulating fan.

In some embodiments of the present invention, the ventilating device further includes a fixed case, the volute and the outer shell are arranged in the fixed case, and the fixed case is provided with an air vent communicating with the inside of the fixed case . Thereby the application range of the ventilation device is increased.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and comprehensible from the description of the embodiments in conjunction with the following drawings, wherein:

1 is a cross-sectional view of a ventilation device according to an embodiment of the present invention, wherein air circulates in a first air circulation channel;

2 is a cross-sectional view of a ventilation device according to an embodiment of the present invention, wherein air circulates in a second air circulation channel;

3 is a schematic diagram of a volute provided with a fan assembly in a ventilation device according to an embodiment of the present invention;

Fig. 4 is a sectional view of the volute provided with the fan assembly shown in Fig. 3, wherein the second air inlet and the air outlet are connected;

Fig. 5 is a cross-sectional view of the volute provided with the fan assembly shown in Fig. 3, wherein the first air inlet and the air outlet are connected;

Fig. 6 is a schematic diagram of an air duct switching assembly in a ventilation device according to an embodiment of the present invention;

7 is a schematic diagram of a fan assembly in a ventilation device according to an embodiment of the present invention;

Fig. 8 is a schematic diagram of a housing in a ventilation device according to an embodiment of the present invention;

Fig. 9 is a schematic diagram of a ventilation device provided with a fixed shell according to an embodiment of the present invention.

Reference signs:

Ventilation device 100, volute 1, first air inlet 10, second air inlet 11,

Air outlet 12, first limiting plate 13, second limiting plate 14, fan assembly 2,

Fan 20, first damper 3, casing 4, air vent 40, air outlet 41,

The first part 42, the second part 43, the air channel switching assembly 5, the pivot shaft 50,

Second blocking door 51, switching door 52, flat plate 520, arc plate 521, door cover 6,

Drive motor 7, fixed shell 8, air vent 80, air pipe 9

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right" etc. are based on the attached The orientation or positional relationship shown in the figure is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a reference to this invention. Invention Limitations. In addition, the terms "first" and "second" are used for descriptive purposes only, and should not be understood as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

The ventilation device 100 according to the embodiment of the present invention will be described below with reference to FIGS. 1-9 .

As shown in FIGS. 1-5 , the ventilation device 100 according to the embodiment of the present invention includes: a volute 1 , a fan assembly 2 , a first damper 3 , a hollow shell 4 and an air duct switching assembly 5 . Wherein, the volute 1 has a first air inlet 10, a second air inlet 11 and an air outlet 12, as shown in Figures 3-5, the first air inlet 10 is located on the right side wall of the volute 1, and the second air inlet The air outlet 11 is arranged on the front wall of the volute 1 , and the air outlet 12 is arranged on the left side wall of the volute 1 .

The first damper 3 is pivotally arranged at the first air inlet 10 to open or close the first air inlet 10 , wherein the first damper 3 can be driven to rotate by any means to open or close the first air inlet 10 . The fan assembly 2 includes a fan 20 , and the fan assembly 2 is arranged in the volute 1 , and the rotation of the fan 20 in the fan assembly 2 generates a pressure difference inside the ventilator 100 , so that air circulates inside and outside the ventilator 100 . When the ventilation device 100 is installed in the air conditioner, preferably, the fan 20 is a DC speed-adjustable fan, and the fan 20 is connected with the electric control box of the air conditioner. Air volume control to achieve the best ventilation effect of quietness and power saving.

The casing 4 is arranged on the volute 1, the second air inlet 11 and the air outlet 12 communicate with the inside of the casing 4, and the casing 4 is provided with a vent 40 and an air outlet 41, that is to say, the inside of the volute 1 and the inside of the casing 4 pass through The second air inlet 11 and the air outlet 12 are connected. Specifically, as shown in Fig. 1, Fig. 2 and Fig. 8, the casing 4 includes a hollow first part 42 and a hollow second part 43, the rear side of the first part 42 is open, the right side of the second part 43 is open, and the first part The left end of 42 is connected with the right end of second part 43, and the left side of second part 43 is open to form vent 40, and air outlet 41 is arranged on the top wall of second part 43, and first part 42 is covered in the design of volute 1 On the front wall with the second air inlet 11 , the rear wall of the second part 43 is connected with the rear wall of the volute 1 .

The air channel switching assembly 5 is rotatably connected to the housing 4 between the first position and the second position, and in the first position the vent 40, the second air inlet 11, the air outlet 12 and the air outlet 41 are connected to form a second An air circulation passage, in the second position, the first air inlet 10, the air outlet 12 and the ventilation opening 40 are connected to form a second air circulation passage, specifically, the air passage switching assembly 5 is used to open and close the second air inlet 11 and air outlet 41.

In the following, the air vent 40 communicates with the indoor environment, the air outlet 41 communicates with the outdoor environment, and the first air inlet 10 communicates with the outdoor environment as an example for illustration.

As shown in Figure 1, when in the first position, the second air inlet 11 and the air outlet 41 are opened, and the first air inlet 10 is in a closed state. At this time, the air vent 40, the second air inlet 11, the air outlet 12 and the air outlet 41 is conducted to construct the first air circulation channel, and at the same time, the fan 20 in the fan assembly 2 operates to cause a pressure difference between the interior of the volute 1 and the casing 4 and the indoor environment, so that the indoor air enters the casing 4 from the vent 40, and then Indoor air enters the interior of the volute 1 through the second air inlet 11, and finally the indoor air is discharged to the outside through the air outlet 12 and the air outlet 41 in turn, that is to say, as shown by the arrow in Figure 1, the first air circulation The path of the channel is vent 40—inside the casing 4—the second air inlet 11—inside the volute 1—air outlet 12—air outlet 41, so as to realize the purpose of exhausting the indoor turbid air to the outside. For the purpose of ventilation.

As shown in Figure 2, when in the second position, the second air inlet 11 and the air outlet 41 are closed, and the first air inlet 10 is in an open state. The second air circulation channel is constructed, and the fan 20 in the fan assembly 2 is running to cause a pressure difference between the interior of the volute 1 and the casing 4 and the outdoor environment, so that the outdoor air enters the volute 1 through the first air inlet 10, and the outdoor air In this way, it is exhausted into the room through the air outlet 12 and the air outlet 40, that is to say, as shown by the arrow in Figure 2, the path of the second air circulation channel at this time is the first air inlet 10—inside the volute 1—— The air outlet 12—the inside of the housing 4—the vent 40, so as to achieve the purpose of blowing fresh outdoor air into the room.

According to the ventilation device 100 of the embodiment of the present invention, by being provided with the first air inlet 10, the second air inlet 11, the air outlet 12, the air outlet 41 and the air outlet 40, the air outlet 40, the second air inlet The air outlet 11, the air outlet 12 and the air outlet 41 are connected to define a first air circulation channel, and in the second position, the first air inlet 10, the air outlet 12 and the air outlet 40 are connected to define a second air circulation channel, Through the circulation of air in the first air circulation channel or the second air circulation channel, the purpose of exhausting indoor air to the outside or introducing outdoor air into the room can be achieved, so that the ventilation device 100 can achieve the purpose of two-way ventilation, and the ventilation The gas device 100 is provided with only one blower fan 20, which reduces costs, improves resource utilization and facilitates installation.

In a specific embodiment of the present invention, as shown in Fig. 1-Fig. 5, the first damper 3 is arranged in the volute 1, the first damper 3 normally closes the first air inlet 10 under the action of gravity, the first When the pressure inside the volute 1 is lower than the pressure outside the volute 1, the shutter 3 rotates in the direction toward the inside of the volute 1, that is to say, in the second position, when the fan 20 rotates, the inside of the volute 1 and the casing 4 There is an air pressure difference with the outside world. At this time, the air pressure overcomes the gravity of the first damper 3 , and the air pressure makes the first damper 3 rotate toward the inside of the volute 1 to open the first air inlet 10 . Therefore, the structure of the ventilation device 100 is simplified.

Further, as shown in Figures 1-5, the volute 1 is provided with a mounting hole, and the ventilation device 100 also includes a door cover 6, which is detachably arranged on the mounting hole to close the mounting hole, and the first stop One end of the door 3 is rotatably provided on the door cover 6 . At this time, the installation of the first blocking door 3 can be realized by setting the door cover 6 on which the first blocking door 3 is installed on the installation hole, thereby facilitating the assembly of the first blocking door 3 into the volute 1 . In a specific example of the present invention, the door cover 6 is snap-connected to the volute 1 . Thereby, the installation of the door cover 6 is facilitated.

As shown in Figure 1-Figure 5, the door cover 6 is hung on the installation hole, the volute 1 is provided with a first limiting plate 13 and a second limiting plate 14, the first limiting plate 13 and the second limiting plate 14 extend upwardly from the top wall of the mounting hole towards the center of the mounting hole. When the door cover 6 is hung on the mounting hole, the bottom wall of the first limiting plate 13 and the bottom wall of the second limiting plate 14 are respectively The top wall of the door cover 6 contacts to limit the upward freedom of the door cover 6, so that the door cover 6 is arranged on the mounting hole to prevent the door cover 6 from falling.

According to some embodiments of the present invention, as shown in FIG. 1 and FIG. 2 , the ventilation device 100 further includes a driving motor 7 , and the driving motor 7 drives the air duct switching assembly 5 to rotate. Optionally, the driving motor 7 is a stepping motor.

As shown in Fig. 1, Fig. 2 and Fig. 6, in some embodiments of the present invention, the air channel switching assembly 5 includes: a pivot shaft 50, a second blocking door 51 and a switching door 52, wherein the pivot shaft 50 is rotatable One end of the pivot shaft 50 is provided in the housing 4 and extends out of the housing 4 . The second shutter 51 is fixed on one end of the pivot shaft 50 to open or close the air outlet 41 , and in the example shown in FIGS. 1 , 2 and 6 , the second shutter 51 is formed in a fan shape. The switching door 52 is fixed on the part of the pivot shaft 50 inside the housing 4 , and the switching door 52 is rotated to open or close the second air inlet 11 . Specifically, the driving motor 7 drives the pivot shaft 50 to rotate, and when the pivot shaft 50 rotates, the pivot shaft 50 drives the second blocking door 51 and the switching door 52 to rotate. Therefore, the synchronous control of the rotation of the second blocking door 51 and the switching door 52 can be realized, so that the structure of the ventilation device 100 is simple.

Further, the switching door 52 includes a flat plate 520 and an arc-shaped plate 521 , and one end of the flat plate 520 is fixed on the pivot shaft 50 . A first end of the arc-shaped plate 521 is vertically connected to the other end of the flat plate 520 , and a second end of the arc-shaped plate 521 is bent and extends toward the pivot axis 50 . As shown in Figure 1, when in the first position, the second end of the arc-shaped plate 521 is in contact with the rear wall of the housing 4, as shown in Figure 2, when in the second position, the first end of the arc-shaped plate 521 is in contact with the housing 4 4 in contact with the front wall, thereby realizing switching between the first air circulation channel and the second air circulation channel.

It should be noted that the ventilation device 100 of the present invention can be directly assembled inside the air conditioner, so that the air conditioner has the function of ventilation. When the ventilation device 100 of the present invention includes the fixed shell 8, the ventilation device 100 is an independent device, and the user can choose whether to configure the ventilation device 100 according to the needs after purchasing the air conditioner, wherein specifically, the volute 1 and the shell 4 is arranged in the fixed shell 8, and the fixed shell 8 is provided with a vent 80 communicating with the fixed shell 8. At this time, the ventilation device 100 provided with the fixed shell 8 is set in the outdoor environment, and the vent 40 communicates with the indoor environment through the air pipe 9 . In the example of FIG. 9 , the outer peripheral wall of the fixed case 8 is formed in a grid shape to define a plurality of vents 80 .

The working principle of the ventilation device 100 according to the preferred embodiment of the present invention will be described below with reference to FIGS. 1-8 . The ventilation device 100 is assembled in the air conditioner.

As shown in Figure 1, the drive motor 7 is controlled by the internal program of the air conditioner to rotate, so that the air duct switching assembly 5 is rotated to the first position as shown in Figure 1, and the second air inlet 11 and the air outlet 41 are in an open state , due to gravity, the first damper 3 closes the first air inlet 10, and at this time the vent 40, the second air inlet 11, the air outlet 12 and the air outlet 41 are connected to form a first air circulation channel. When the fan 20 in the fan assembly 2 rotates, a pressure difference is generated between the interior of the volute 1 and the casing 4 and the indoor environment, and the air enters the ventilation device 100 from the vent 40 and is discharged from the air outlet 41, thereby removing the turbid air in the room. The air is discharged to achieve the purpose of ventilation.

As shown in Figure 2, the drive motor 7 is controlled to rotate through the internal program of the air conditioner, so that the air duct switching assembly 5 is rotated to the second position as shown in Figure 2, and the second air inlet 11 and the air outlet 41 are in a closed state . When the fan 20 in the fan assembly 2 rotates, the inside of the volute 1 and the inside of the casing 4 present a high negative pressure state, that is, a pressure difference is generated between the inside of the volute 1 and the inside of the casing 4 and the outdoor environment, and the air pressure overcomes the first damper 3 to rotate and open the first damper 3, so that the first air inlet 10 is in an open state, and the outdoor air enters the ventilation device 100 from the first air inlet 10 and is discharged from the vent 40, thereby blowing the outdoor air into the room.

According to the ventilation device 100 of the embodiment of the present invention, one blower 20 is used to realize the purpose of two-way ventilation, which reduces the cost, and the ventilation device 100 has a simple structure and a good ventilation effect.

In the description of this specification, references to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific examples," or "some examples" are intended to mean that the implementation A specific feature, structure, material, or characteristic described by an embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the invention is defined by the claims and their equivalents.

Claims (10)

1. A ventilation device, characterized in that, comprising: a volute, the volute has a first air inlet, a second air inlet and an air outlet; a fan assembly, the fan assembly is arranged in the volute; a first damper, the first damper is pivotably arranged at the first air inlet to open or close the first air inlet; a hollow shell, the shell is arranged on the volute, the second air inlet and the air outlet communicate with the inside of the shell, and the shell is provided with a vent and an air outlet; an air channel switching assembly, the air channel switching assembly is rotatably connected to the housing between a first position and a second position, in the first position the vent, the second air inlet, the The air outlet and the air outlet are connected to form a first air circulation channel, and in the second position, the first air inlet, the air outlet and the ventilation opening are connected to form a second air circulation channel . 2. The ventilation device according to claim 1, wherein the first damper is arranged in the volute, and the first damper normally closes the first air inlet under the action of gravity , when the pressure inside the volute is lower than the pressure outside the volute, the first shutter rotates in a direction toward the inside of the volute. 3. The ventilation device according to claim 2, characterized in that, the volute is provided with a mounting hole, and the ventilation device also includes a door cover, and the door cover is detachably arranged in the installation hole to close the installation hole, and one end of the first blocking door is rotatably arranged on the door cover. 4. The ventilation device according to claim 3, wherein the door cover is buckled and connected to the volute. 5 . The ventilation device according to claim 1 , further comprising a driving motor, the driving motor drives the air duct switching assembly to rotate. 5 . 6. The ventilation device according to claim 1, wherein the air duct switching assembly comprises: a pivot shaft, the pivot shaft is rotatably provided in the housing and one end of the pivot shaft protrudes from the housing; a second shutter fixed to the one end of the pivot shaft to open or close the air outlet; A switching door, the switching door is fixed on the part of the pivot shaft located inside the casing, and the switching door is rotated to open or close the second air inlet. 7. The ventilation device according to claim 6, wherein the switch door comprises: a flat plate, one end of which is fixed on the pivot shaft; An arc-shaped plate, the first end of the arc-shaped plate is vertically connected to the other end of the flat plate, and the second end of the arc-shaped plate bends and extends in a direction toward the pivot axis. 8. The ventilation device according to claim 6, wherein the second shutter is formed in a sector shape. 9. The ventilation device according to claim 1, characterized in that, the fan in the fan assembly is a DC speed regulating fan. 10. The ventilation device according to claim 1, further comprising a fixed case, the volute and the outer shell are arranged in the fixed case, and the fixed case is provided with a Internally connected vents.