A fresh air component with a single air duct for bidirectional air output, a fresh air air conditioner, and a control method

Abstract

The present invention provides a fresh air component with a single air duct for bidirectional air output, a fresh air air conditioner and a control method. The fresh air component includes: a fresh air volute, a mounting frame, a sealing cover and a centrifugal impeller. The fresh air volute is connected to one axial side of the mounting frame, the sealing cover is connected to the other axial side of the mounting frame, the centrifugal impeller is arranged in the fresh air volute, an indoor air inlet is arranged on the side of the sealing cover facing the indoor, and an indoor air outlet is arranged on the side of the fresh air volute facing the indoor; an outdoor air inlet is arranged on the side of the sealing cover facing the outdoor, and an outdoor air outlet is arranged on the side of the fresh air volute facing the outdoor; an indoor baffle is arranged on the side of the mounting frame facing the indoor; an outdoor baffle is arranged on the side of the mounting frame facing the outdoor. According to the present invention, the fresh air component has only one air duct, can achieve the effect of bidirectional air output, and can also reduce the setting of air dampers, effectively reducing the volume of the fresh air air conditioner and lowering the volume and cost of the dual-air-output fresh air air conditioner.

Description

Technical Field

[0001] The present invention relates to the technical field of fresh air air conditioners, and particularly relates to a fresh air component with single-duct bidirectional air outlet, a fresh air air conditioner and a control method. Background Art

[0002] With the improvement of the consumption level, the functions of air conditioners are also increasing day by day. The fresh air function is a hot spot in the sales promotion of current air conditioners. The fresh air function in air conditioners is mainly divided into single-direction air outlet and bidirectional air outlet. According to the structural layout of the air conditioner, the fresh air function with bidirectional air outlet needs to occupy a relatively large part of the space of the air conditioner, and the volume of the air conditioner also increases accordingly, resulting in a relatively high structural cost. In view of this situation, the present invention proposes a fresh air air conditioner with single-duct bidirectional air outlet.

[0003] Due to the technical problems in the prior art that the fresh air structure with bidirectional air outlet needs to occupy a relatively large part of the space of the air conditioner, the volume of the air conditioner also increases accordingly, resulting in a relatively high structural cost, etc., the present invention researches and designs a fresh air component with single-duct bidirectional air outlet, a fresh air air conditioner and a control method. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the fresh air structure with bidirectional air outlet in the prior art needs to occupy a relatively large part of the space of the air conditioner, the volume of the air conditioner also increases accordingly, resulting in a relatively high structural cost, so as to provide a fresh air component with single-duct bidirectional air outlet, a fresh air air conditioner and a control method.

[0005] To solve the above problems, the present invention provides a fresh air component with single-duct bidirectional air outlet, which includes:

[0006] A fresh air volute, a mounting frame, a sealing cover and a centrifugal impeller. The fresh air volute is connected and arranged on one axial side of the mounting frame, the sealing cover is connected and arranged on the other axial side of the mounting frame, the centrifugal impeller is arranged in the fresh air volute, an indoor air inlet is arranged on the side of the sealing cover facing the indoor side, and an indoor air outlet is arranged on the side of the fresh air volute facing the indoor side; an outdoor air inlet is arranged on the side of the sealing cover facing the outdoor side, and an outdoor air outlet is arranged on the side of the fresh air volute facing the outdoor side;

[0007] An indoor baffle is arranged on the side of the mounting frame facing the indoor side. The indoor baffle can move to open the indoor air outlet and close the indoor air inlet in the fresh air mode, and the indoor baffle can move to close the indoor air outlet and open the indoor air inlet in the sewage air mode; an outdoor baffle is arranged on the side of the mounting frame facing the outdoor side. The outdoor baffle can move to close the outdoor air outlet and open the outdoor air inlet in the fresh air mode, and the outdoor baffle can move to open the outdoor air outlet and close the outdoor air inlet in the sewage air mode.

[0008] In some embodiments, a first motor is further included. The first motor is connected to the indoor baffle and can drive the indoor baffle to rotate. The indoor baffle can rotate between the indoor air inlet and the indoor air outlet. When the indoor baffle rotates to cover the indoor air inlet, the indoor air outlet is opened, and at this time, the fresh air mode is operated. When the indoor baffle rotates to cover the indoor air outlet, the indoor air inlet is opened, and at this time, the sewage air mode is operated;

[0009] A second motor is further included. The second motor is connected to the outdoor baffle and can drive the outdoor baffle to rotate. The outdoor baffle can rotate between the outdoor air inlet and the outdoor air outlet. When the outdoor baffle rotates to cover the outdoor air inlet, the outdoor air outlet is opened, and at this time, the sewage air mode is operated. When the indoor baffle rotates to cover the outdoor air outlet, the outdoor air inlet is opened, and at this time, the fresh air mode is operated.

[0010] In some embodiments, a ventilation opening penetrating from one axial side to the other axial side is provided on the mounting bracket, and a filtering assembly is provided at the ventilation opening;

[0011] When operating in the fresh air mode, the indoor baffle rotates to close the indoor air inlet and at the same time open the indoor air outlet. The outdoor baffle rotates to open the outdoor air inlet and at the same time close the outdoor air outlet, so that outdoor fresh air enters the sealing cover through the outdoor air inlet, passes through the filtering assembly at the ventilation opening, enters the fresh air volute, and is driven by the centrifugal fan blade to enter the room from the indoor air outlet;

[0012] When operating in the sewage air mode, the indoor baffle rotates to open the indoor air inlet and at the same time close the indoor air outlet. The outdoor baffle rotates to close the outdoor air inlet and at the same time open the outdoor air outlet, so that indoor sewage air enters the sealing cover through the indoor air inlet, passes through the filtering assembly at the ventilation opening, enters the fresh air volute, and is driven by the centrifugal fan blade to be discharged to the outside through the outdoor air outlet.

[0013] In some embodiments, the indoor air outlet is located at the radially outer end of the centrifugal fan blade, and the ventilation opening is located on one axial side of the centrifugal fan blade. In the fresh air mode, outdoor fresh air enters the sealing cover, then enters the centrifugal fan blade along the axis through the ventilation opening, and then enters the room along the radial direction from the indoor air outlet; the outdoor air outlet is also located at the radially outer end of the centrifugal fan blade. In the sewage air mode, indoor sewage air enters the sealing cover, then enters the centrifugal fan blade along the axis through the ventilation opening, and then is discharged to the outside along the radial direction through the outdoor air outlet.

[0014] In some embodiments, the indoor air inlet is located at a radial end of the sealing cover, and the outdoor air inlet is located at a radial end of the sealing cover. In the fresh air mode, fresh air outdoors enters the sealing cover along the radial direction, and in the sewage discharge air mode, fresh air indoors enters the sealing cover along the radial direction.

[0015] In some embodiments, the indoor air inlet is arranged on the upper side of the sealing cover, and the indoor air outlet is arranged on the upper side of the fresh air volute; the outdoor air inlet is arranged on the lower side of the sealing cover, and the outdoor air outlet is arranged on the lower side of the fresh air volute.

[0016] In some embodiments, the first motor is in shaft-hole fit with the indoor baffle, and the first motor and / or the indoor baffle are fixed on the upper side of the mounting frame by threaded fasteners;

[0017] The second motor is in shaft-hole fit with the outdoor baffle, and the second motor and / or the outdoor baffle are fixed on the upper side of the mounting frame by threaded fasteners.

[0018] In some embodiments, it further includes a third motor, the third motor is arranged inside the fresh air volute, the third motor is connected and fixed with the centrifugal air blade, and the third motor and / or the centrifugal air blade are fixed with the fresh air volute.

[0019] In some embodiments, the fresh air volute is fixed with the mounting frame by snap fasteners and threaded fasteners, and the sealing cover is fixed with the mounting frame by snap fasteners and threaded fasteners.

[0020] The present invention also provides a fresh air air conditioner, which includes the fresh air component with single-duct two-way air outlet described in any one of the preceding items.

[0021] The present invention also provides a control method for the fresh air component with single-duct two-way air outlet described in any one of the preceding items. When the fresh air component includes a first motor and a second motor, the control method includes:

[0022] A detection step of detecting the mode in which the fresh air component needs to operate;

[0023] A judgment step of judging whether the required operating mode is the fresh air mode or the sewage discharge air mode;

[0024] A control step. When the required operating mode is the fresh air mode, control the first motor to drive the indoor baffle to rotate to close the indoor air inlet and open the indoor air outlet; control the second motor to drive the outdoor baffle to rotate to close the outdoor air outlet and open the outdoor air inlet;

[0025] When the required working mode is the sewage exhaust air mode, control the first motor to drive the indoor baffle to rotate to open the indoor air inlet and close the indoor air outlet; control the second motor to drive the outdoor baffle to rotate to open the outdoor air outlet and close the outdoor air inlet.

[0026] The fresh air component, fresh air air conditioner and control method with single-duct bidirectional air supply provided by the present invention have the following beneficial effects:

[0027] 1. By setting the structures of the fresh air volute, mounting frame and sealing cover, and arranging the indoor air inlet and the outdoor air inlet on both sides of the sealing cover, fresh air can be introduced from the outdoor air inlet in the fresh air mode and indoor polluted air can be introduced from the indoor air inlet in the sewage exhaust air mode by using the sealing cover. The outdoor air outlet and the indoor air outlet are respectively arranged on both sides of the fresh air volute, and fresh air can be supplied into the room through the indoor air outlet in the fresh air mode and sewage can be exhausted outdoors through the outdoor air outlet in the sewage exhaust air mode by using the fresh air volute. So that the fresh air component has only one duct (i.e., the duct composed of the sealing cover, fresh air volute and mounting frame), and the effect of bidirectional air supply can be achieved, effectively reducing the volume of the fresh air air conditioner and lowering the volume and cost of the double-outlet fresh air air conditioner. And by arranging the indoor air inlet and the indoor air outlet on the same side and setting an indoor baffle between them, the indoor baffle can simultaneously control the indoor air inlet and the indoor air outlet, that is, in the fresh air mode, the indoor baffle moves to close the indoor air inlet and open the indoor air outlet, and in the sewage exhaust air mode, the indoor baffle moves to close the indoor air outlet and open the indoor air inlet; the outdoor air inlet and the outdoor air outlet are arranged on the same side and an outdoor baffle is set between them, so that the outdoor baffle can simultaneously control the outdoor air inlet and the outdoor air outlet, that is, in the fresh air mode, the outdoor baffle moves to open the outdoor air inlet and close the outdoor air outlet, and in the sewage exhaust air mode, the outdoor baffle moves to open the outdoor air outlet and close the outdoor air inlet; thus, one air door baffle simultaneously controls indoor air supply and indoor air intake, and the other air door baffle simultaneously controls outdoor air supply and outdoor air intake, which can reduce the setting of air doors, further reduce the volume of the fresh air air conditioner, and further lower the volume and cost of the fresh air air conditioner.

[0028] 2. The present invention also arranges both air inlets on the same side of the axial direction of the centrifugal fan blade, enabling air intake from the same axial side of the centrifugal fan blade in both the fresh air mode and the sewage exhaust air mode. Since the centrifugal fan blade differentiates between the air intake side and the leeward side, both the fresh air mode and the sewage exhaust air mode of the present invention can intake air from the air intake side (the same axial side) of the centrifugal fan blade, while the air outlets are all located at the radial outer ends of the centrifugal fan blade, thereby effectively utilizing the centrifugal fan blade for air suction and exhaust, further improving the air volume, further enhancing the air outlet effect of the fresh air air conditioner, and improving the efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is an exploded structural view of the fresh air component with single duct and two-way air outlet of the present invention;

[0030] Figure 2 is an assembled structural view (without baffle) of the fresh air component with single duct and two-way air outlet of the present invention;

[0031] Figure 3 is an air path diagram of the fresh air component with single duct and two-way air outlet of the present invention in the fresh air mode;

[0032] Figure 4 is an air path diagram of the fresh air component with single duct and two-way air outlet of the present invention in the sewage exhaust air mode.

[0033] The reference numerals are shown as:

[0034] 1, fresh air volute; 2, mounting frame; 3, sealing cover; 4, centrifugal fan blade; 5, indoor air inlet; 6, indoor air outlet; 7, outdoor air inlet; 8, outdoor air outlet; 9, indoor baffle; 10, outdoor baffle; 11, first motor; 12, second motor; 13, ventilation opening; 14, filter assembly; 15, third motor. DETAILED DESCRIPTION OF THE INVENTION

[0035] As Figures 1-4 shown, the present invention provides a fresh air component with single duct and two-way air outlet, which includes:

[0036] A fresh air volute 1, a mounting frame 2, a sealing cover 3 and a centrifugal fan blade 4. The fresh air volute 1 is connected and arranged on one side of the axial direction of the mounting frame 2, the sealing cover 3 is connected and arranged on the other side of the axial direction of the mounting frame 2, the centrifugal fan blade 4 is arranged in the fresh air volute 1, an indoor air inlet 5 is arranged on the side of the sealing cover 3 facing the indoor, and an indoor air outlet 6 is arranged on the side of the fresh air volute 1 facing the indoor; an outdoor air inlet 7 is arranged on the side of the sealing cover 3 facing the outdoor, and an outdoor air outlet 8 is arranged on the side of the fresh air volute 1 facing the outdoor;

[0037] On the side of the mounting bracket 2 facing the indoor side, an indoor baffle 9 is provided. The indoor baffle 9 can move to open the indoor air outlet 6 in the fresh air mode, and at the same time close the indoor air inlet 5. The indoor baffle 9 can move to close the indoor air outlet 6 in the sewage exhaust air mode, and at the same time open the indoor air inlet 5; on the side of the mounting bracket 2 facing the outdoor side, an outdoor baffle 10 is provided. The outdoor baffle 10 can move to close the outdoor air outlet 8 in the fresh air mode, and at the same time open the outdoor air inlet 7. The outdoor baffle 10 can move to open the outdoor air outlet 8 in the sewage exhaust air mode, and at the same time close the outdoor air inlet 7.

[0038] By setting the structure of the fresh air volute, the mounting bracket and the sealing cover in the present invention, and the indoor air inlet and the outdoor air inlet are both arranged on the sealing cover and on both sides of the sealing cover, fresh air can be introduced from the outdoor air inlet in the fresh air mode by using the sealing cover, and indoor polluted air can be introduced from the indoor air inlet in the sewage exhaust air mode. The outdoor air outlet and the indoor air outlet are respectively arranged on the fresh air volute and on both sides of the fresh air volute. The fresh air volute can be used to introduce fresh air into the room through the indoor air outlet in the fresh air mode, and discharge sewage air to the outside through the outdoor air outlet in the sewage exhaust air mode, so that the fresh air component has only one air duct (that is, the air duct formed by the sealing cover, the fresh air volute and the mounting bracket), and the effect of bidirectional air outlet can be achieved, effectively reducing the volume of the fresh air air conditioner and reducing the volume and cost of the double-outlet fresh air air conditioner; and by arranging the indoor air inlet and the indoor air outlet on the same side, and arranging an indoor baffle between the two, the indoor baffle can simultaneously control the indoor air inlet and the indoor air outlet, that is, in the fresh air mode, the indoor baffle moves to close the indoor air inlet and open the indoor air outlet, and in the sewage exhaust air mode, the indoor baffle moves to close the indoor air outlet and open the indoor air inlet; the outdoor air inlet and the outdoor air outlet are arranged on the same side, and an outdoor baffle is arranged between the two, so that the outdoor baffle can simultaneously control the outdoor air inlet and the outdoor air outlet, that is, in the fresh air mode, the outdoor baffle moves to open the outdoor air inlet and close the outdoor air outlet, and in the sewage exhaust air mode, the outdoor baffle moves to open the outdoor air outlet and close the outdoor air inlet; thus, one air door baffle simultaneously controls the indoor air outlet and the indoor air inlet, and the other air door baffle simultaneously controls the outdoor air outlet and the outdoor air inlet, which can reduce the setting of the air doors, further reduce the volume of the fresh air air conditioner, and further reduce the volume and cost of the fresh air air conditioner.

[0039] The present invention provides a floor-standing air conditioner with a single air duct and bidirectional air outlet. The air conditioner includes a fresh air module. The fresh air module has only one air duct, in which two baffle plates and their movement mechanisms are provided. The two baffle plates are respectively driven by motors to realize the introduction of outdoor fresh air and the discharge of indoor turbid air, reducing the volume and cost of the double-outlet fresh air air conditioner.

[0040] 1. Solved the problem that the fresh air conditioner with two-way air outlet has a relatively large volume;

[0041] 2. Also solved the problem that the fresh air conditioner with two-way air outlet has a high cost.

[0042] In some embodiments, it further includes a first motor 11, the first motor 11 is connected to the indoor baffle 9 and can drive the indoor baffle 9 to rotate. The indoor baffle 9 can rotate between the indoor air inlet 5 and the indoor air outlet 6. When the indoor baffle 9 rotates to cover the indoor air inlet 5, the indoor air outlet 6 is opened, and at this time, the fresh air mode is operated. When the indoor baffle 9 rotates to cover the indoor air outlet 6, the indoor air inlet 5 is opened, and at this time, the sewage discharge air mode is operated;

[0043] It further includes a second motor 12, the second motor 12 is connected to the outdoor baffle 10 and can drive the outdoor baffle 10 to rotate. The outdoor baffle 10 can rotate between the outdoor air inlet 7 and the outdoor air outlet 8. When the outdoor baffle 10 rotates to cover the outdoor air inlet 7, the outdoor air outlet 8 is opened, and at this time, the sewage discharge air mode is operated. When the outdoor baffle 10 rotates to cover the outdoor air outlet 8, the outdoor air inlet 7 is opened, and at this time, the fresh air mode is operated.

[0044] The present invention can also effectively drive the indoor baffle to rotate through the first motor, that is, it can rotate to the indoor air inlet to close the indoor air inlet, and at this time, the indoor air outlet is opened, which is suitable for the fresh air mode, and can also rotate to the indoor air outlet to close the indoor air outlet, and at this time, the indoor air inlet is opened, which is suitable for the sewage discharge air mode; while the second motor can drive the outdoor baffle to rotate to the outdoor air inlet to close the outdoor air inlet, and at this time, the outdoor air outlet is opened, which is suitable for the sewage discharge air mode, and can also rotate to the outdoor air outlet to close the outdoor air outlet, and at this time, the outdoor air inlet is opened, which is suitable for the fresh air mode; that is, one baffle controls the indoor air inlet and the indoor air outlet at the same time, and the other baffle controls the outdoor air inlet and the outdoor air outlet at the same time. Compared with the prior art that only controls the alternating operation of the fresh air mode and the sewage discharge air mode through two baffles, the layout of the structure is effectively reduced, and the volume and cost of the fresh air conditioner are reduced.

[0045] In some embodiments, a ventilation opening 13 penetrating from one axial side to the other axial side is provided on the mounting frame 2, and a filtering component 14 is provided at the ventilation opening 13; the filtering component is preferably a filter net;

[0046] When operating in the fresh air mode, the indoor baffle 9 rotates to close the indoor air inlet 5, and at the same time opens the indoor air outlet 6. The outdoor baffle 10 rotates to open the outdoor air inlet 7, and at the same time closes the outdoor air outlet 8, so that outdoor fresh air enters the sealing cover 3 through the outdoor air inlet 7, and enters the fresh air volute 1 after being filtered by the filter assembly 14 of the ventilation port 13, and is driven by the centrifugal fan blade 4 to enter the room from the indoor air outlet 6;

[0047] When operating in the sewage exhaust air mode, the indoor baffle 9 rotates to open the indoor air inlet 5, and at the same time closes the indoor air outlet 6. The outdoor baffle 10 rotates to close the outdoor air inlet 7, and at the same time opens the outdoor air outlet 8, so that indoor polluted air enters the sealing cover 3 through the indoor air inlet 5, and enters the fresh air volute 1 after being filtered by the filter assembly 14 of the ventilation port 13, and is driven by the centrifugal fan blade 4 to be discharged to the outside through the outdoor air outlet 8.

[0048] The present invention can also effectively introduce the outdoor fresh air or indoor polluted air inhaled in the sealing cover into the centrifugal fan blade of the fresh air volute through the ventilation port provided on the mounting bracket, so as to be transported indoors or outdoors, thereby forming a connected air duct structure. Moreover, the present invention only uses a single air duct structure formed by the fresh air volute, the mounting bracket and the sealing cover, effectively completing the common functions of fresh air intake and polluted air discharge, reducing the steps of the air duct, and reducing the volume and cost of the air conditioner; the filter assembly can be used to effectively filter the fresh air inhaled from the outside and the polluted air discharged indoors.

[0049] In some embodiments, the indoor air outlet 6 is located at the radially outer end of the centrifugal fan blade 4, and the ventilation port 13 is located on one axial side of the centrifugal fan blade 4. In the fresh air mode, outdoor fresh air enters the sealing cover 3, and then enters the centrifugal fan blade 4 along the axis through the ventilation port 13, and then enters the room from the indoor air outlet 6 along the radial direction; the outdoor air outlet 8 is also located at the radially outer end of the centrifugal fan blade 4. In the sewage exhaust air mode, after indoor polluted air enters the sealing cover 3, it enters the centrifugal fan blade 4 along the axis through the ventilation port 13, and then is discharged to the outside through the outdoor air outlet 8 along the radial direction. The present invention also arranges both air inlets on the same axial side of the centrifugal fan blade, so that air can enter from the same axial side of the centrifugal fan blade whether in the fresh air mode or the sewage exhaust air mode. Since the centrifugal fan blade distinguishes between the air inlet side and the back air side, both the fresh air mode and the sewage exhaust air mode of the present invention can intake air from the air inlet side (the same axial side) of the centrifugal fan blade, and the air outlets are all located at the radially outer ends of the centrifugal fan blade, thereby effectively using the centrifugal fan blade for air intake and exhaust, further improving the air volume, further improving the air outlet effect of the fresh air air conditioner, and improving the efficiency.

[0050] In some embodiments, the indoor air inlet 5 is located at a radial end of the sealing cover 3, and the outdoor air inlet 7 is located at a radial end of the sealing cover 3. In the fresh air mode, the fresh air outdoors enters the sealing cover 3 along the radial direction, and in the sewage air mode, the fresh air indoors enters the sealing cover 3 along the radial direction. This is a preferred structural form of the indoor air inlet and the outdoor air inlet of the present invention, that is, both are located at the outer end of the sealing cover in the radial direction. The indoor air inlet faces indoors, and the outdoor air inlet faces outdoors, which can improve the air intake volume and the air intake efficiency; using one component of the sealing cover can simultaneously complete the functions of indoor air intake and outdoor air intake, reduce the arrangement of components, and make the structure more compact.

[0051] In some embodiments, the indoor air inlet 5 is arranged on the upper side of the sealing cover 3, and the indoor air outlet 6 is arranged on the upper side of the fresh air volute 1; the outdoor air inlet 7 is arranged on the lower side of the sealing cover 3, and the outdoor air outlet 8 is arranged on the lower side of the fresh air volute 1. This is a further preferred structural form of the indoor air intake and the indoor air outlet of the present invention, that is, the indoor side faces upward, and both the outdoor air inlet and the outdoor air outlet face downward, which can provide an effective layout form for the layout of the fresh air air conditioner.

[0052] In some embodiments, the first motor 11 and the indoor baffle 9 are in shaft hole fit, and the first motor 11 and / or the indoor baffle 9 are fixed on the upper side of the mounting frame 2 by threaded fasteners;

[0053] The second motor 12 and the outdoor baffle 10 are in shaft hole fit, and the second motor 12 and / or the outdoor baffle 10 are fixed on the upper side of the mounting frame 2 by threaded fasteners.

[0054] This is a preferred connection form of the first motor and the second motor of the present invention with the indoor baffle and the outdoor baffle, and a preferred connection position with the mounting frame, that is, both the first motor and the indoor baffle are fixed on the upper side of the mounting frame, introducing fresh air into the room upward or introducing sewage air into the room from above; both the second motor and the outdoor baffle are fixed on the lower side of the mounting frame, discharging sewage air outdoors downward or introducing fresh air from outdoors from below.

[0055] In some embodiments, a third motor 15 is further included. The third motor 15 is arranged inside the fresh air volute 1. The third motor 15 is fixedly connected to the centrifugal air blade 4, and the third motor 15 and / or the centrifugal air blade 4 are fixed to the fresh air volute 1. The present invention can also drive the centrifugal air blade to rotate to drive the air to flow through the structure of the third motor, achieving the beneficial effects of introducing fresh air indoors and discharging the indoor sewage air.

[0056] In some embodiments, the fresh air volute 1 and the mounting bracket 2 are fixed by snap fasteners and threaded fasteners, and the sealing cover 3 and the mounting bracket 2 are fixed by snap fasteners and threaded fasteners. The fresh air volute of the present invention is preferably fixedly installed with the mounting bracket by snap fasteners and threaded fasteners, and the sealing cover and the mounting bracket are also preferably fixedly installed by snap fasteners and threaded fasteners.

[0057] The present invention also provides a fresh air air conditioner, which includes the fresh air component with single duct and bidirectional air outlet described in any one of the previous items.

[0058] As Figure 1 shown, the present invention includes a fresh air volute, a wind blade motor, a centrifugal wind blade, a mounting bracket, a sealing cover, a motor (indoor), a motor (outdoor), a baffle (indoor), and a baffle (outdoor). Among them, the motor is fixed together with the centrifugal wind blade and is installed on the fresh air volute by screws. The motor (indoor) and the baffle (indoor) are in shaft-hole fit and are fixed to the upper side of the mounting bracket by screws; the motor (outdoor) and the baffle (outdoor) are in shaft-hole fit and are fixed to the lower side of the mounting bracket by screws. The fresh air volute and the mounting bracket are fixed by snap fasteners and screws. The fresh air pipe is installed on the sealing cover, and the sealing cover is fixed on the mounting bracket by screws and snap fasteners.

[0059] As Figure 2 shown, the fresh air module of the present invention includes an outdoor air inlet, an indoor air exhaust port, an indoor air inlet, and an outdoor air exhaust port. The present invention has only one duct of the fresh air volute, and the function of single-duct bidirectional air outlet is completed through four air inlets and air exhaust ports.

[0060] Fresh air introduction mode. As Figure 3 shown, the motor (indoor) is started, driving the baffle (indoor) to rotate to the indoor air inlet; the motor (outdoor) is started, driving the baffle (outdoor) to rotate to the outdoor air exhaust port. The indoor air inlet and the outdoor air exhaust port are blocked, the indoor air exhaust port and the outdoor air inlet are opened, the wind blade motor is started to drive the centrifugal wind blade to rotate, and the outdoor air is sucked into the fresh air module through the outdoor air inlet and enters the room through the indoor air exhaust port, achieving the purpose of introducing fresh outdoor air.

[0061] Sewage air mode. As Figure 4 shown, the motor (indoor) is started, driving the baffle (indoor) to rotate to the indoor air exhaust port; the motor (outdoor) is started, driving the baffle (outdoor) to rotate to the outdoor air inlet. The indoor air exhaust port and the outdoor air inlet are blocked, the indoor air inlet and the outdoor air exhaust port are opened, the wind blade motor is started to drive the centrifugal wind blade to rotate, and the indoor air is sucked into the fresh air module through the indoor air inlet and discharged to the outside through the outdoor air exhaust port, achieving the purpose of discharging the dirty air in the room.

[0062] The present invention also provides a control method for a fresh air component with single-duct bidirectional air output as described in any one of the preceding items, wherein: when the fresh air component includes a first motor 11 and a second motor 12, the control method includes:

[0063] A detection step of detecting the mode in which the fresh air component needs to operate;

[0064] A judgment step of judging whether the required operating mode is a fresh air mode or a sewage exhaust air mode;

[0065] A control step of, when the required operating mode is the fresh air mode, controlling the first motor to drive the indoor baffle to rotate to close the indoor air inlet 5 and open the indoor air outlet 6; controlling the second motor to drive the outdoor baffle to rotate to close the outdoor air outlet 8 and open the outdoor air inlet 7;

[0066] When the required operating mode is the sewage exhaust air mode, controlling the first motor to drive the indoor baffle to rotate to open the indoor air inlet 5 and close the indoor air outlet 6; controlling the second motor to drive the outdoor baffle to rotate to open the outdoor air outlet 8 and close the outdoor air inlet 7.

[0067] In the fresh air mode of the present invention, the indoor baffle moves to close the indoor air inlet and open the indoor air outlet, and the outdoor baffle moves to open the outdoor air inlet and close the outdoor air outlet; in the sewage exhaust air mode, the indoor baffle moves to close the indoor air outlet and open the indoor air inlet, and the outdoor baffle moves to open the outdoor air outlet and close the outdoor air inlet; thus, one air damper can simultaneously control the indoor air output and the indoor air inlet, and the other air damper can simultaneously control the outdoor air output and the outdoor air inlet, which can reduce the setting of air dampers, further reduce the volume of the fresh air air conditioner, and further reduce the volume and cost of the fresh air air conditioner.

[0068] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above is only the preferred implementation manner of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and variations can be made, and these improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. A fresh air component with a single air duct and bidirectional air output, characterized in that: Including: A fresh air volute (1), a mounting bracket (2), a sealing cover (3) and a centrifugal fan blade (4). The fresh air volute (1) is connected and arranged on one axial side of the mounting bracket (2), the sealing cover (3) is connected and arranged on the other axial side of the mounting bracket (2), the centrifugal fan blade (4) is arranged in the fresh air volute (1), an indoor air inlet (5) is arranged on the side of the sealing cover (3) facing the indoor, and an indoor air outlet (6) is arranged on the side of the fresh air volute (1) facing the indoor; an outdoor air inlet (7) is arranged on the side of the sealing cover (3) facing the outdoor, and an outdoor air outlet (8) is arranged on the side of the fresh air volute (1) facing the outdoor. An indoor baffle (9) is arranged on the side of the mounting bracket (2) facing the indoor. The indoor baffle (9) can move to open the indoor air outlet (6) and close the indoor air inlet (5) in the fresh air mode, and the indoor baffle (9) can move to close the indoor air outlet (6) and open the indoor air inlet (5) in the sewage exhaust air mode; an outdoor baffle (10) is arranged on the side of the mounting bracket (2) facing the outdoor. The outdoor baffle (10) can move to close the outdoor air outlet (8) and open the outdoor air inlet (7) in the fresh air mode, and the outdoor baffle (10) can move to open the outdoor air outlet (8) and close the outdoor air inlet (7) in the sewage exhaust air mode.

2. The fresh air component with single-duct bidirectional air outlet according to claim 1, characterized in that: It further includes a first motor (11). The first motor (11) is connected to the indoor baffle (9) and can drive the indoor baffle (9) to rotate. The indoor baffle (9) can rotate between the indoor air inlet (5) and the indoor air outlet (6). When the indoor baffle (9) rotates to cover the indoor air inlet (5), the indoor air outlet (6) is opened, and at this time the fresh air mode is operated. When the indoor baffle (9) rotates to cover the indoor air outlet (6), the indoor air inlet (5) is opened, and at this time the sewage exhaust air mode is operated. It further includes a second motor (12). The second motor (12) is connected to the outdoor baffle (10) and can drive the outdoor baffle (10) to rotate. The outdoor baffle (10) can rotate between the outdoor air inlet (7) and the outdoor air outlet (8). When the outdoor baffle (10) rotates to cover the outdoor air inlet (7), the outdoor air outlet (8) is opened, and at this time the sewage exhaust air mode is operated. When the outdoor baffle (10) rotates to cover the outdoor air outlet (8), the outdoor air inlet (7) is opened, and at this time the fresh air mode is operated.

3. The fresh air component with single-duct bidirectional air outlet according to claim 2, characterized in that: A ventilation opening (13) penetrating from one axial side to the other axial side is arranged on the mounting bracket (2), and a filter assembly (14) is arranged at the ventilation opening (13). When operating in the fresh air mode, the indoor baffle (9) rotates to close the indoor air inlet (5), and at the same time opens the indoor air outlet (6). The outdoor baffle (10) rotates to open the outdoor air inlet (7), and at the same time closes the outdoor air outlet (8), so that outdoor fresh air enters the sealing cover (3) through the outdoor air inlet (7), and after being filtered by the filter assembly (14) of the ventilation port (13), it enters the fresh air volute (1), and is driven by the centrifugal fan blade (4) to enter the room through the indoor air outlet (6); When operating in the sewage air mode, the indoor baffle (9) rotates to open the indoor air inlet (5), and at the same time closes the indoor air outlet (6). The outdoor baffle (10) rotates to close the outdoor air inlet (7), and at the same time opens the outdoor air outlet (8), so that indoor sewage air enters the sealing cover (3) through the indoor air inlet (5), and after being filtered by the filter assembly (14) of the ventilation port (13), it enters the fresh air volute (1), and is driven by the centrifugal fan blade (4) to be discharged to the outside through the outdoor air outlet (8).

4. The fresh air component with single duct and two-way air outlet according to claim 3, characterized in that: The indoor air outlet (6) is located at the radially outer end of the centrifugal fan blade (4), and the ventilation port (13) is located on one axial side of the centrifugal fan blade (4). In the fresh air mode, outdoor fresh air enters the sealing cover (3), and then enters the centrifugal fan blade (4) axially through the ventilation port (13), and then enters the room radially from the indoor air outlet (6); The outdoor air outlet (8) is also located at the radially outer end of the centrifugal fan blade (4). In the sewage air mode, after indoor sewage air enters the sealing cover (3), it enters the centrifugal fan blade (4) axially through the ventilation port (13), and then is discharged to the outside radially from the outdoor air outlet (8).

5. The fresh air component with single duct and two-way air outlet according to claim 4, characterized in that: The indoor air inlet (5) is located at one radial end of the sealing cover (3), and the outdoor air inlet (7) is located at one radial end of the sealing cover (3). In the fresh air mode, outdoor fresh air enters the sealing cover (3) radially, and in the sewage air mode, indoor fresh air enters the sealing cover (3) radially.

6. The fresh air component with single duct and two-way air outlet according to claim 5, characterized in that: The indoor air inlet (5) is arranged on the upper side of the sealing cover (3), and the indoor air outlet (6) is arranged on the upper side of the fresh air volute (1); The outdoor air inlet (7) is arranged on the lower side of the sealing cover (3), and the outdoor air outlet (8) is arranged on the lower side of the fresh air volute (1).

7. The fresh air component with single duct and two-way air outlet according to claim 6, characterized in that: The first motor (11) and the indoor baffle (9) are in shaft-hole fit, and the first motor (11) and / or the indoor baffle (9) are fixed to the upper side of the mounting bracket (2) by threaded fasteners; The second motor (12) and the outdoor baffle (10) are in shaft-hole fit, and the second motor (12) and / or the outdoor baffle (10) are fixed to the upper side of the mounting bracket (2) by threaded fasteners.

8. The fresh air assembly with single duct and two-way air outlet according to any one of claims 1-7, characterized in that: It further includes a third motor (15), the third motor (15) is arranged in the fresh air volute (1), the third motor (15) is fixedly connected to the centrifugal impeller (4), and the third motor (15) and / or the centrifugal impeller (4) are fixed to the fresh air volute (1).

9. The fresh air assembly with single duct and two-way air outlet according to any one of claims 1-8, characterized in that: The fresh air volute (1) and the mounting bracket (2) are fixed by snap fasteners and threaded fasteners, and the sealing cover (3) and the mounting bracket (2) are fixed by snap fasteners and threaded fasteners.

10. A fresh air air conditioner, characterized in that: It includes the fresh air assembly with single duct and two-way air outlet according to any one of claims 1-9.

11. A control method for a fresh air component with a single air duct and bidirectional air outlet as described in any one of claims 1-9, characterized in that: When the fresh air assembly includes the first motor (11) and the second motor (12), the control method includes: A detection step of detecting the mode in which the fresh air assembly needs to operate; A judgment step of judging whether the required operating mode is a fresh air mode or a sewage air mode; A control step that when the required operating mode is the fresh air mode, controls the first motor to drive the indoor baffle to rotate to close the indoor air inlet (5) and open the indoor air outlet (6); controls the second motor to drive the outdoor baffle to rotate to close the outdoor air outlet (8) and open the outdoor air inlet (7); When the required operating mode is the sewage air mode, controls the first motor to drive the indoor baffle to rotate to open the indoor air inlet (5) and close the indoor air outlet (6); controls the second motor to drive the outdoor baffle to rotate to open the outdoor air outlet (8) and close the outdoor air inlet (7).

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