CN111928403A - Fan equipment for fresh air system and method for carrying out air exchange by utilizing fan equipment - Google Patents

Abstract

The application provides a fan device, comprising: a casing; an indoor air inlet, an indoor air outlet, and an outdoor opening arranged in the casing. The indoor air inlet, indoor air outlet and outdoor opening are respectively provided with a first air valve, a second air valve and a third air valve. The first air valve is used to control the opening and closing of the indoor air inlet, and the second air valve is used to control the opening and closing of the indoor air inlet. It is used to control the opening and closing of the indoor air outlet, and the third air valve is used to control the opening and closing of the outdoor opening. Wherein, the volute can be rotated around an axis, so that the air outlet can be switched between the first position and the second position. When the air outlet is in the first position, the air outlet faces the indoor air inlet, and when the air outlet is in the second position , the air outlet is open to the outside. The present application also provides a method for air exchange using a fan device.

Description

Fan equipment for fresh air system and method for using the same for air exchange

technical field

The present application generally relates to a fan device for a fresh air system and a method for using the same for air exchange, and in particular, to a fan device with a rotatable volute and a method for using the same for air exchange.

Background technique

With the improvement of living standards and the gradual deterioration of air quality, people have higher and higher requirements for the air quality of the living environment, and the demand for air purification equipment such as air purifiers and fresh air systems is increasing day by day. Among them, the fresh air system has gradually been widely used in the family because of its high purification efficiency and good purification effect.

The current fresh air system can mainly work in the following modes:

1) Fresh air mode, which is used to introduce outdoor fresh air into the room through the filter device, so as to realize the purification of indoor air;

2) Exhaust mode, which is used to discharge the indoor dirty air to the outside to realize the purification of indoor air;

3) Internal circulation mode, which is used to return the indoor dirty air to the filter device, and then discharge it into the room after filtering, so as to realize the purification of indoor air.

The fresh air system on the current market usually adopts the structure of double volute fan. The fresh air mode, exhaust air mode and internal circulation mode are realized through the cooperation of two volute fans. However, the structure of such a double volute fan leads to an increase in cost.

SUMMARY OF THE INVENTION

At least one object of the present application is to provide a fan device for a fresh air system, which can simultaneously realize a fresh air mode, an exhaust air mode and an internal circulation mode through a single volute fan.

The application provides a fan equipment, including:

a casing, the casing encloses a cavity;

Indoor air inlets, indoor air outlets, and outdoor openings provided in the housing are used to provide air passages between the cavity and the outer space of the housing, wherein the indoor air inlets, the indoor air The air outlet and the outdoor opening are respectively provided with a first air valve, a second air valve and a third air valve. The first air valve is used to control the opening and closing of the indoor air inlet, and the second air valve is used to control the opening and closing of the indoor air inlet. To control the opening and closing of the indoor air outlet, the third air valve is used to control the opening and closing of the outdoor opening;

a blower, located in the cavity within the housing, wherein the blower comprises a main body portion and a volute, the volute having a blowing port,

Wherein, the volute can be rotated around an axis, so that the blowing port can be switched between a first position and a second position, and when the blowing port is in the first position, the blowing port is facing the The indoor air inlet, when the air outlet is located at the second position, the air outlet opens toward the outdoor.

In at least one embodiment, the fan equipment further includes a first air guide device and a second air guide device, wherein,

The first air guide device is located between the first position and the indoor air inlet, and is used to guide the air blown out from the blower to the indoor air inlet;

The second air guide device is located between the second position and the outdoor opening, and is used for guiding the air blown from the air outlet to the outdoor opening.

In at least one embodiment, the fan device further includes an air filter device, the air filter device is located in the first air guide device.

In at least one embodiment, the fan apparatus further includes an air filter device located between the first position and the indoor air inlet.

In at least one embodiment, the fan is configured to direct air to form an airflow through the indoor air inlet through the air outlet when the air outlet is in the first position.

In at least one embodiment, the fan is configured to direct air to form a flow of air through the outdoor opening through the air outlet when the air outlet is in the second position.

In at least one embodiment, the fan apparatus further comprises drive means for driving the volute to rotate about the axis.

In at least one embodiment, the fan device further includes a mode selection unit and a control unit, wherein the mode selection unit is configured to select the working mode of the fan device as one of a fresh air mode, an internal circulation mode, and an exhaust air mode. The control unit is configured to:

In response to the mode selection unit selecting the fresh air mode, the first air valve and the third air valve are controlled to open the indoor air inlet and the outdoor opening respectively, and the second air valve is controlled to close all the air inlets. The indoor air outlet is controlled, and the rotation of the volute of the fan is controlled so that the air outlet is located at the first position, and the fan is turned on to guide air into the cavity through the outdoor opening, and then is discharged to the outside of the housing through the indoor air inlet;

In response to the mode selection unit selecting the exhaust mode, controlling the second air valve and the third air valve to open the indoor air outlet and the outdoor opening respectively, and controlling the first air valve to close the indoor air inlet, and the rotation of the volute of the fan is controlled so that the air outlet is located at the second position, and the fan is turned on to guide air into the cavity through the indoor air outlet , and then discharged to the outside of the casing through the outdoor opening;

In response to the mode selection unit selecting the internal circulation mode, the first damper and the second damper are controlled to open the indoor air inlet and the indoor air outlet respectively, and the third damper is controlled closing the outdoor opening, and controlling the rotation of the volute of the fan so that the air outlet is located at the first position, and turning on the fan to guide air into the cavity through the indoor air outlet , and then discharged to the outside of the casing through the indoor air inlet.

The present application also provides a method for air exchange using the above-mentioned fan device, comprising the following steps:

Selecting the working mode of the fan equipment as one of the fresh air mode, the internal circulation mode, and the exhaust air mode,

When the selected working mode is the fresh air mode: control the first air valve and the third air valve to open the indoor air inlet and the outdoor opening respectively, and control the second air valve to close the indoor air outlet , and control the rotation of the volute of the fan so that the air outlet is located at the first position, and turn on the fan to guide the air into the cavity through the outdoor opening, and then through the indoor The air inlet is discharged to the outside of the housing;

When the selected working mode is the exhaust mode: control the second air valve and the third air valve to open the indoor air outlet and the outdoor opening respectively, control the first air valve to close the indoor air inlet an air outlet, and control the rotation of the volute of the fan so that the air outlet is located at the second position, and turn on the fan to guide the air to enter the cavity through the indoor air outlet, and then pass through the air outlet. the outdoor opening is discharged to the outside of the housing;

When the selected working mode is the internal circulation mode: control the first air valve and the second air valve to open the indoor air inlet and the indoor air outlet respectively, control the third air valve to close the outdoor air opening, and controlling the rotation of the volute of the fan so that the air outlet is located at the first position, and turning on the fan to guide the air to enter the cavity through the indoor air outlet, and then pass through the air outlet. The indoor air inlet is discharged to the outside of the housing.

In the fresh air system provided by this application, only a single volute fan is provided. The volute of the volute fan can be rotated according to the operating mode of the fresh air system. The fresh air system provided by the present application can realize multiple working modes with only one volute fan, thereby reducing the cost and reducing the installation space at the same time.

Description of drawings

The above-mentioned characteristics, technical features, advantages and implementation manners of the present application will be further described below in a clear and easy-to-understand manner through the description of the preferred embodiments and in conjunction with the accompanying drawings. The following drawings are only intended to illustrate and explain the present application schematically, and do not limit the scope of the present application. in:

FIG. 1 shows an internal schematic diagram of an exemplary blower apparatus according to an embodiment of the present application, wherein the blower apparatus operates in a fresh air mode;

FIG. 2 shows an internal schematic diagram of an exemplary blower apparatus according to an embodiment of the present application, wherein the blower apparatus operates in an exhaust mode;

FIG. 3 shows an internal schematic diagram of an exemplary blower apparatus according to an embodiment of the present application, wherein the blower apparatus operates in an internal circulation mode;

FIG. 4 shows a method of air exchange of a fan device according to an embodiment of the present application.

Detailed ways

In order to have a clearer understanding of the technical features, purposes and effects of the present application, the specific embodiments of the present application will now be described with reference to the accompanying drawings.

In the fan equipment for a fresh air system provided by the present application, there is only one volute fan. The volute of the volute fan can be rotated according to the operation mode of the fresh air system. When the volute rotates in different directions, the air will be blown in different directions, thus switching the operation mode of the fresh air system. The structure of the fan apparatus according to the present application will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows a fan device for a fresh air system according to the present application, including: a casing 1 and a fan 2 inside the casing 1 .

The housing 1 has an indoor air inlet A, an indoor air outlet B and an outdoor opening C. The indoor air inlet A, the indoor air outlet B and the outdoor opening C can provide air passages between the interior of the housing 1 and the exterior of the housing 1 . The indoor air inlet A, the indoor air outlet B, and the outdoor opening C are respectively provided with a first air valve a, a second air valve b, and a third air valve c. The first air valve a is used to control the opening and closing of the indoor air inlet A, the second air valve b is used to control the opening and closing of the indoor air outlet B, and the third air valve c is used to control the opening and closing of the outdoor opening C.

The fan 2 includes a main body portion 20 and a volute 21 . The volute 21 has a blower port D. The volute 21 can be rotated around an axis under the driving of the driving device 4, so that the air outlet D can be switched between the first position and the second position. When the air outlet D is in the first position, it faces the indoor air inlet A. When the air outlet D is located at the second position, the air outlet D faces the outdoor opening C. FIG. 1 shows the structure when the air outlet D is in the first position. When the air outlet D is located at the first position, the air is guided to form an airflow through the indoor air inlet A. When the blower port D is located at the second position, the air is guided to form an airflow through the outdoor opening C.

In an embodiment according to the present application, as shown in FIGS. 1-2 , the driving device 4 includes a driving gear 41 and a driving bar 42 . The drive bar 42 has serrations matched with the drive gear 41 . The drive bar 42 is disposed around the volute 21 of the fan 2 and extends along the direction in which the volute 21 rotates. The drive gear 41 meshes with the saw teeth of the drive bar 42 . Driven by the drive gear 41, the drive bar 42 can move along its extending direction. One end E of the drive strip 42 abuts against the volute 21 . When the drive gear 41 drives the drive bar 42 to move along its extending direction, the end E of the drive bar 42 can push the volute 21, thereby causing the volute 21 to rotate. As shown in FIG. 1 , the air outlet D of the volute 21 is at the first position at this time. When the volute 21 needs to be rotated to switch the working mode of the fan device, the driving bar 42 is driven by the driving gear 41, so that the volute 21 is rotated so that the blowing port D is located in the second position shown in FIG. 2 .

In other embodiments, other forms of driving devices may also be used to rotate the volute 21 .

The fan device according to an embodiment of the present application further includes a first air guiding device 31 and a second air guiding device 32 . The first air guide device 31 is located between the first position and the indoor air inlet A, and is used to guide the air blown from the air outlet D to the indoor air inlet A when the air outlet D is at the first position. The second air guide device 32 is located between the second position and the outdoor opening C, and is used to guide the air blown from the blowing port D to the outdoor opening C when the blowing port D is located at the second position.

The fan device according to an embodiment of the present application further includes an air filter device. For the sake of brevity, the air filter device is not shown in the drawings. The air filter device may be located between the first position and the indoor air inlet A. For example, the air filter device may be located in the first air guide device 31 .

After the fan device provided according to an embodiment of the present application is installed, it can work in the following working modes:

1) Fresh air mode: In the fresh air mode, the first air valve a and the third air valve c are opened, thereby opening the indoor air inlet A and the outdoor opening C. The second damper b is closed, thereby closing the indoor air outlet B. The volute 21 of the fan 2 is rotated so that its blowing port D is located at the first position. Turn on the fan 2 to guide the air to enter the cavity of the casing 1 through the outdoor opening C, and after being filtered by the filter device, it is discharged to the outside of the casing 1 through the indoor air inlet A, so as to reach the indoor space to provide fresh air to the indoor space. , filtered air. The path in which the air flows is shown by the arrow in FIG. 1 .

2) In the exhaust mode: the second air valve b and the third air valve c are opened, thereby opening the indoor air outlet A and the outdoor opening C. The first damper a is closed, thereby closing the indoor air inlet A. The volute 21 of the fan 2 is rotated so that its blowing port D is located in the second position. Turn on the fan 2 to guide the air into the cavity of the casing 1 through the indoor air outlet B, and then discharge it to the outside of the casing 1 through the outdoor opening C to discharge the indoor air to the outdoors. The path in which the air flows is shown by the arrow in FIG. 2 .

3) Internal circulation mode: the first air valve a and the second air valve b are opened, thereby opening the indoor air inlet A and the indoor air outlet B. The third damper c is closed, thereby closing the outdoor opening C. The volute 21 of the fan 2 is rotated so that its blowing port D is located at the first position. The fan 2 is turned on to guide the air into the cavity of the housing 1 through the indoor air outlet B, and after being filtered by the filter device, it is then discharged to the outside of the housing 1 through the indoor air inlet A to provide filtered air to the indoor space. The path in which the air flows is shown by the arrow in FIG. 3 .

It can be seen from the above description that the fan device for the fresh air system provided according to the present application can simultaneously realize the fresh air mode, the exhaust air mode and the internal circulation mode through a single volute fan. The volute of the volute fan can be rotated according to the operating mode of the fresh air system. The fan device for the fresh air system provided by the present application can realize multiple working modes with only one volute fan, thereby reducing the cost and reducing the installation space at the same time.

The blower device according to an embodiment of the present application further includes a mode selection unit and a control unit. The mode selection unit is used to select the working mode of the fan device as one of a fresh air mode, an exhaust air mode, and an internal circulation mode. The control unit is configured to:

In response to the mode selection unit selecting the fresh air mode, the first air valve a and the third air valve c are controlled to open the indoor air inlet A and the outdoor air opening C respectively, the second air valve b is controlled to close the indoor air outlet B, and the scroll of the fan is controlled. The rotation of the casing 21 makes the air outlet D at the first position, and the fan is turned on to guide the air to enter the cavity of the casing 1 through the outdoor opening C, and then be discharged to the outside of the casing 1 through the indoor air inlet A;

In response to the mode selection unit selecting the exhaust mode, the second air valve b and the third air valve c are controlled to open the indoor air outlet B and the outdoor air opening C respectively, the first air valve a is controlled to close the indoor air inlet A, and the blower of the fan is controlled. The rotation of the volute 21 makes the air outlet D at the second position, and the fan is turned on to guide the air to enter the cavity through the indoor air outlet B, and then be discharged to the outside of the housing 1 through the outdoor opening C;

In response to the mode selection unit selecting the internal circulation mode, the first air valve a and the second air valve b are controlled to open the indoor air inlet A and the indoor air outlet B respectively, the third air valve c is controlled to close the outdoor opening C, and the blower of the fan is controlled. The rotation of the volute 21 makes the air outlet D in the first position, and the fan is turned on to guide the air to enter the cavity through the indoor air outlet B, and then be discharged to the outside of the casing through the indoor air inlet A.

According to an embodiment of the present application, a method for air exchange using the above-mentioned fan device is also provided, as shown in FIG. 4 , the method includes the following steps:

S1: Working mode selection - select the working mode of the fan equipment in the fresh air mode, exhaust air mode and internal circulation mode;

S2: Mode control—control the rotation of the first air valve, the second air valve, the third air valve, and the volute 21 of the fan according to the selected working mode, and the specific methods are as follows:

S21) When the selected working mode is the fresh air mode: control the first air valve a and the third air valve c to open the indoor air inlet A and the outdoor air opening C respectively, control the second air valve b to close the indoor air outlet B, and control the fan The volute 21 is rotated so that the air outlet D is located at the first position, and the fan is turned on to guide the air to enter the cavity of the casing 1 through the outdoor opening C, and then be discharged to the outside of the casing 1 through the indoor air inlet A;

S22) When the selected working mode is the exhaust mode: control the second air valve b and the third air valve c to open the indoor air outlet B and the outdoor air opening C respectively, control the first air valve a to close the indoor air inlet A, and control the The volute 21 of the fan rotates so that the air outlet D is located at the second position, and the fan is turned on to guide the air to enter the cavity through the indoor air outlet B, and then be discharged to the outside of the housing 1 through the outdoor opening C;

S23) When the selected working mode is the internal circulation mode: control the first air valve a and the second air valve b to open the indoor air inlet A and the indoor air outlet B respectively, control the third air valve c to close the outdoor opening C, and control the The volute 21 of the fan rotates so that the air outlet D is in the first position, and the fan is turned on to guide the air to enter the cavity through the indoor air outlet B, and then be discharged to the outside of the casing through the indoor air inlet A.

It should be understood that although this specification is described according to various embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

The above descriptions are only illustrative specific embodiments of the present application, and are not intended to limit the scope of the present application. Any equivalent changes, modifications and combinations made by any person skilled in the art without departing from the concept and principles of the present application shall fall within the protection scope of the present application.

Claims (9)

1. A fan device, comprising: a casing, the casing encloses a cavity; Indoor air inlets, indoor air outlets, and outdoor openings provided in the housing are used to provide air passages between the cavity and the outer space of the housing, wherein the indoor air inlets, the indoor air The air outlet and the outdoor opening are respectively provided with a first air valve, a second air valve and a third air valve. The first air valve is used to control the opening and closing of the indoor air inlet, and the second air valve is used to control the opening and closing of the indoor air inlet. To control the opening and closing of the indoor air outlet, the third air valve is used to control the opening and closing of the outdoor opening; a blower, located in the cavity within the housing, wherein the blower comprises a main body portion and a volute, the volute having a blowing port, Wherein, the volute can be rotated around an axis, so that the blowing port can be switched between a first position and a second position, and when the blowing port is in the first position, the blowing port is facing the The indoor air inlet, when the air outlet is located at the second position, the air outlet opens toward the outdoor. 2. The fan device according to claim 1, further comprising a first air guiding device and a second air guiding device, wherein, The first air guide device is located between the first position and the indoor air inlet, and is used to guide the air blown out from the blower to the indoor air inlet; The second air guide device is located between the second position and the outdoor opening, and is used for guiding the air blown from the air outlet to the outdoor opening. 3. The fan device according to claim 2, further comprising an air filter device, the air filter device being located in the first air guide device. 4. The fan apparatus according to claim 1, further comprising an air filter device located between the first position and the indoor air inlet. 5. The blower apparatus of claim 1, the blower being configured to direct air to form an airflow through the indoor air inlet through the blower opening when the blower opening is in the first position. 6. The blower apparatus of claim 1, the blower being configured to direct air to form an airflow through the outdoor opening through the blower opening when the blower opening is in the second position. 7. The blower apparatus of claim 1, further comprising drive means for driving the volute to rotate about the axis. 8. The fan device according to claim 1, further comprising a mode selection unit and a control unit, wherein the mode selection unit is used to select the working mode of the fan device as a fresh air mode, an internal circulation mode, and an exhaust air mode In one, the control unit is configured to: In response to the mode selection unit selecting the fresh air mode, the first air valve and the third air valve are controlled to open the indoor air inlet and the outdoor opening respectively, and the second air valve is controlled to close all the air inlets. The indoor air outlet is controlled, and the rotation of the volute of the fan is controlled so that the air outlet is located at the first position, and the fan is turned on to guide air into the cavity through the outdoor opening, and then is discharged to the outside of the housing through the indoor air inlet; In response to the mode selection unit selecting the exhaust mode, controlling the second air valve and the third air valve to open the indoor air outlet and the outdoor opening respectively, and controlling the first air valve to close the indoor air inlet, and the rotation of the volute of the fan is controlled so that the air outlet is located at the second position, and the fan is turned on to guide air into the cavity through the indoor air outlet , and then discharged to the outside of the casing through the outdoor opening; In response to the mode selection unit selecting the internal circulation mode, the first damper and the second damper are controlled to open the indoor air inlet and the indoor air outlet respectively, and the third damper is controlled closing the outdoor opening, and controlling the rotation of the volute of the fan so that the air outlet is located at the first position, and turning on the fan to guide air into the cavity through the indoor air outlet , and then discharged to the outside of the casing through the indoor air inlet. 9. A method for air exchange using the fan device according to any one of claims 1-8, comprising the steps of: Selecting the working mode of the fan equipment as one of the fresh air mode, the internal circulation mode, and the exhaust air mode, When the selected working mode is the fresh air mode: control the first air valve and the third air valve to open the indoor air inlet and the outdoor opening respectively, and control the second air valve to close the indoor air outlet , and control the rotation of the volute of the fan so that the air outlet is located at the first position, and turn on the fan to guide the air into the cavity through the outdoor opening, and then through the indoor The air inlet is discharged to the outside of the housing; When the selected working mode is the exhaust mode: control the second air valve and the third air valve to open the indoor air outlet and the outdoor opening respectively, control the first air valve to close the indoor air inlet an air outlet, and control the rotation of the volute of the fan so that the air outlet is located at the second position, and turn on the fan to guide the air to enter the cavity through the indoor air outlet, and then pass through the air outlet. the outdoor opening is discharged to the outside of the housing; When the selected working mode is the internal circulation mode: control the first air valve and the second air valve to open the indoor air inlet and the indoor air outlet respectively, control the third air valve to close the outdoor air opening, and controlling the rotation of the volute of the fan so that the air outlet is located at the first position, and turning on the fan to guide the air to enter the cavity through the indoor air outlet, and then pass through the air outlet. The indoor air inlet is discharged to the outside of the housing.

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