Air damper device and fresh air unit

Abstract

The present invention provides a damper device and a fresh air blower. The damper device includes a damper door, dampers and a driving mechanism. At least two ventilation openings are formed in the damper door. There are at least two dampers, which are respectively movably installed on the ventilation openings. There is at least one driving mechanism, which is arranged between two adjacent dampers and is respectively drivingly connected to the two dampers. The driving mechanism includes an open state in which the two dampers are driven to move relatively closer to open the two ventilation openings, and a closed state in which the two dampers are driven to move relatively away from each other to close the two ventilation openings. By applying the technical solution of the present invention, two dampers can be simultaneously driven by one driving mechanism to move relatively closer to open the two ventilation openings or to move relatively away from each other to close the two ventilation openings, thereby reducing the use of the driving mechanism and lowering the cost of the damper device.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning equipment, and more particularly, to a damper device and a fresh air fan. Background Art

[0002] The existing fresh air fan includes a housing composed of front and rear panels and side panels. The side panels are provided with a return air inlet and a supply air outlet communicating with the room, an air inlet and an exhaust outlet communicating with the outside. Inside the housing, a fresh air duct communicating the air inlet and the supply air outlet, and an exhaust air duct communicating the return air inlet and the exhaust outlet are formed. A section of the fresh air duct connecting the air inlet and a section of the exhaust air duct connecting the exhaust outlet are formed by a partition separating a cavity. The partition is provided with a first damper that can communicate the section of the fresh air duct with the section of the exhaust air duct. Second and third dampers that can close the air inlet and the exhaust outlet are provided at the air inlet and the exhaust outlet, and the dampers are connected to corresponding driving devices to realize the opening and closing of the air outlets.

[0003] As can be seen from the above, when it is necessary to switch between the external circulation and internal circulation working modes of the fresh air fan, more than two dampers and driving devices are required, which results in a relatively high component cost of the damper control part. Summary of the Invention

[0004] Embodiments of the present invention provide a damper device and a fresh air fan to solve the technical problem of excessive cost caused by using too many dampers to control the air outlets in the existing fresh air fan.

[0005] An embodiment of the present invention provides a damper device, including: a damper door, on which at least two ventilation openings are provided; at least two dampers, respectively movably installed on the ventilation openings; and at least one driving mechanism, disposed between two adjacent dampers and respectively drivingly connected to the two dampers. The driving mechanism includes an open state in which the two dampers are driven to move relatively closer to open the two ventilation openings, and a closed state in which the two dampers are driven to move relatively farther away to close the two ventilation openings.

[0006] In one embodiment, the damper door is provided with a limiting member, and the damper is movably installed on the limiting member.

[0007] In one embodiment, the limiting member is a limiting chute.

[0008] In one embodiment, a sealing ring is provided at the ventilation opening on the damper door, and the sealing ring is used to cooperate with the damper for sealing.

[0009] In one embodiment, the driving mechanism includes: a screw driving member, on which there are formed a first threaded section and a second threaded section spaced apart from each other, the helix angle direction of the first threaded section being opposite to that of the second threaded section, and two air valves are respectively installed on the first threaded section and the second threaded section through nut structures.

[0010] In one embodiment, a nut structure is formed on the air valve.

[0011] In one embodiment, the air valve includes a first air valve and a second air valve, the ventilation opening includes a first ventilation opening and a second ventilation opening, the first air valve is installed on the first threaded section, the second air valve is installed on the second threaded section, on the screw driving member, the first threaded section extends from the right side of the first ventilation opening to the left side of the first ventilation opening, on the screw driving member, the second threaded section is only distributed on the left side of the second ventilation opening, and on the screw driving member, the section to the right of the second threaded section is a smooth rod section.

[0012] In one embodiment, the driving mechanism further includes an elastic member, the elastic member is installed on the smooth rod section, and after being compressed, the elastic member drives the second air valve to move towards the second threaded section.

[0013] In one embodiment, the first end of the elastic member is installed on the second air valve through a first fitting portion, and the second end of the elastic member is fixedly installed on the air door through a second fitting portion.

[0014] In one embodiment, the driving mechanism further includes a magnet and an electromagnetic generating member, the magnet is installed on the second air valve, the electromagnetic generating member is installed on the air door, and the electromagnetic generating member generates a magnetic force on the magnet to drive the second air valve to move towards the second threaded section.

[0015] In one embodiment, a partition is provided on the second air valve, and the partition is used to close the air duct.

[0016] In one embodiment, there are two limiting chutes, and the two limiting chutes are respectively installed on the upper side and the lower side of the ventilation opening.

[0017] The present invention also provides a fresh air fan, including the above air valve device.

[0018] In one embodiment, the fresh air fan includes a housing, on one side of the housing, there are provided an outdoor exhaust air outlet and an outdoor air inlet, on the other side of the housing, there are provided an indoor exhaust air outlet and an indoor air inlet, the air valve device is installed at the outdoor exhaust air outlet and the outdoor air inlet, the first ventilation opening corresponds to the outdoor air inlet, and the second ventilation opening corresponds to the outdoor exhaust air outlet.

[0019] In one embodiment, the fresh air unit includes: an external circulation mode, in which the first air valve is located on the right side of the first ventilation opening and the second air valve is located on the left side of the second ventilation opening; an internal circulation mode, in which the first air valve is located on the first ventilation opening and the second air valve is located on the second ventilation opening; a combined circulation mode, in which the first air valve is located on the left side of the first ventilation opening and the second air valve is located on the second ventilation opening.

[0020] In one embodiment, a fresh air duct and an exhaust air duct are formed in the housing. The fresh air duct is respectively connected to the outdoor air inlet and the indoor air outlet, and the exhaust air duct is respectively connected to the outdoor air outlet and the indoor air inlet. A communication hole connecting the fresh air duct and the exhaust air duct is provided at the outdoor air outlet, and a partition is provided on the second air valve; in the external circulation mode, the partition closes the communication hole; in the internal circulation mode and the combined circulation mode, the partition opens the communication hole.

[0021] In the above embodiment, two air valves can be simultaneously driven by a driving mechanism to move relatively closer to open the two ventilation openings or to move relatively farther away to close the two ventilation openings, thereby reducing the use of the driving mechanism and lowering the cost of the air valve device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 is a schematic structural diagram of the air valve device according to an embodiment of the present invention in the first state;

[0024] Figure 2 is Figure 1 a schematic structural diagram of the air valve device in the second state;

[0025] Figure 3 is Figure 1 a schematic structural diagram of the air valve device in the third state;

[0026] Figure 4 is a schematic structural diagram of an embodiment of the air valve device according to the present invention;

[0027] Figure 5 is a schematic structural diagram of another embodiment of the air valve device according to the present invention;

[0028] Figure 6 is a schematic structural diagram of the fresh air unit according to the present invention in the external circulation mode;

[0029] Figure 7Schematic structural diagram of the fresh air unit according to the present invention in the internal circulation mode;

[0030] Figure 8 Schematic structural diagram of the fresh air unit according to the present invention in the composite circulation mode. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with the implementation manners and the accompanying drawings. Herein, the illustrative implementation manners of the present invention and their descriptions are used to explain the present invention, but do not limit the present invention.

[0032] To solve the technical problems in the prior art, such as Figure 1 and Figure 2 shown, the present invention provides a damper device, which includes a damper 10, dampers 20 and a driving mechanism 30. At least two ventilation openings are provided on the damper 10, and there are at least two dampers 20, which are respectively movably installed on the ventilation openings. There is at least one driving mechanism 30, which is arranged between two adjacent dampers 20 and is respectively drivingly connected to the two dampers 20. The driving mechanism 30 includes an open state of driving the two dampers 20 to move relatively closer to open the two ventilation openings, and a closed state of driving the two dampers 20 to move relatively away from each other to close the two ventilation openings.

[0033] By applying the technical solution of the present invention, two dampers 20 can be simultaneously driven by one driving mechanism 30 to move relatively closer to open the two ventilation openings or to move relatively away from each other to close the two ventilation openings, thereby reducing the use of the driving mechanism 30 and lowering the cost of the damper device.

[0034] As a preferred implementation manner, as Figure 1 shown, a limiting component 13 is provided on the damper 10, and the damper 20 is movably installed on the limiting component 13. The stability and accuracy of the movement of the damper 20 can be improved through the limiting component 13. Optionally, in the technical solution of this implementation manner, the limiting component 13 is a limiting chute. More preferably, there are two limiting chutes, and the two limiting chutes are respectively installed on the upper side and the lower side of the ventilation opening to limit the upper side and the lower side of the damper 20 simultaneously, thereby further improving the stability of the movement of the damper 20.

[0035] More preferably, as Figure 1 and Figure 2 shown, a sealing ring 14 is provided at the ventilation opening on the damper 10. The sealing ring 14 is used to cooperate with the damper 20 for sealing, thereby improving the sealing performance of the damper 20 for the ventilation opening.

[0036] As an alternative implementation manner, as Figure 1 andFigure 2 As shown in the figure, the driving mechanism 30 includes a screw driving member 31. On the screw driving member 31, there are formed a first thread section 311 and a second thread section 312 which are spaced apart from each other. The helix angle direction of the first thread section 311 is opposite to that of the second thread section 312. Two air valves 20 are respectively installed on the first thread section 311 and the second thread section 312 through nut structures 32. The screw driving member 31 can drive the two air valves 20 to move relatively closer or relatively farther away at the same time.

[0037] In the technical solution of this embodiment, a nut structure 32 is formed on the air valve 20. As another alternative embodiment, the nut structure 32 and the air valve 20 can also be of a split structure, and the air valve 20 is connected to the nut structure 32 by means of installation.

[0038] As Figure 2 and Figure 3 shown, as a more preferred embodiment, the air valve 20 includes a first air valve 21 and a second air valve 22, and the ventilation openings include a first ventilation opening 11 and a second ventilation opening 12. The first air valve 21 is installed on the first thread section 311, and the second air valve 22 is installed on the second thread section 312. On the screw driving member 31, the first thread section 311 extends from the right side of the first ventilation opening 11 to the left side of the first ventilation opening 11. On the screw driving member 31, the second thread section 312 is only distributed on the left side of the second ventilation opening 12, and on the screw driving member 31, the section to the right of the second thread section 312 is a smooth rod section 313. Applying the technical solution of the present invention, as Figure 1 shown, at the beginning, the first air valve 21 is located on the right side of the first ventilation opening 11, and the second air valve 22 is located on the left side of the second ventilation opening 12, which is equivalent to both the first ventilation opening 11 and the second ventilation opening 12 being open; as the screw driving member 31 rotates, as Figure 2 shown, the first air valve 21 can be moved to be located on the first ventilation opening 11, and the second air valve 22 is located on the second ventilation opening 12, which is equivalent to both the first ventilation opening 11 and the second ventilation opening 12 being closed; as the screw driving member 31 continues to rotate, the first air valve 21 moves to the left side of the first ventilation opening 11, and the second air valve 22 still slips on the smooth rod section 313 and is located on the second ventilation opening 12, which is equivalent to the first ventilation opening 11 being open and the second ventilation opening 12 being closed. In this way, the air valve device of the present invention can realize the control of three states of the two ventilation openings, so as to meet the control requirements of the fresh air fan for the air valve device.

[0039] It should be noted that in the technical solution of the present invention, the screw driving member 31 is driven by a motor. As an alternative embodiment, the position of the first air valve 21 can be detected by a sensor to control the start or stop of the motor, so that the air valve device can run to a specified state. As another alternative embodiment, the motor can also be a servo motor. By controlling the number of rotations of the servo motor, the air valve device can also run to a specified state.

[0040] As an alternative embodiment, as Figure 4 shown, the driving mechanism 30 further includes an elastic member 33. The elastic member 33 is installed on the optical rod section 313. After being compressed, the elastic member 33 drives the second air valve 22 to move towards the second thread section 312. When the air valve device needs to drive the second air valve 22 to move to the left side of the second ventilation opening 12 again, the screw driving member 31 rotates reversely, and the elastic member 33 pushes the nut structure 32 of the second air valve 22 to cooperate with the second thread section 312 again, so that the second air valve 22 can move leftward. As Figure 4 shown preferably, the first end of the elastic member 33 is installed on the second air valve 22 through a first engaging portion, and the second end of the elastic member 33 is fixedly installed on the air door 10 through a second engaging portion. As an alternative embodiment, the elastic member 33 is a compression spring. The compression spring is sleeved on the optical rod section 313 and is installed through the first engaging portion and the second engaging portion. As another alternative embodiment, the elastic member 33 can also be elastic rubber.

[0041] As another alternative embodiment, as Figure 5 shown, the driving mechanism 30 further includes a magnet 34 and an electromagnetic generating member 35. The magnet 34 is installed on the second air valve 22, and the electromagnetic generating member 35 is installed on the air door 10. The electromagnetic generating member 35 generates a magnetic force on the magnet 34 to drive the second air valve 22 to move towards the second thread section 312. In the technical solution of this embodiment, the electromagnetic generating member 35 is located on the right side of the magnet 34, and the repulsive force generated by the electromagnetic generating member 35 that repels the magnet 34 is used to urge the second air valve 22 to move leftward. As another alternative embodiment, the electromagnetic generating member 35 can also be located on the left side of the magnet 34, and the attractive force generated by the electromagnetic generating member 35 that attracts the magnet 34 is used to urge the second air valve 22 to move leftward.

[0042] As Figure 5 and Figure 6 shown, as a more preferred embodiment, a partition 221 is provided on the second air valve 22, and the partition 221 is used to close the air duct.

[0043] As Figure 6 Figure 7 and Figure 8As shown in the figure, the present invention also provides a fresh air blower, which includes the above-mentioned air valve device. Optionally, in the technical solution of this embodiment, the fresh air blower includes a housing 40. On one side of the housing 40, there are an outdoor air outlet 41 and an outdoor air inlet 42. On the other side of the housing 40, there are an indoor air outlet 43 and an indoor air inlet 44. The air valve device is installed at the outdoor air outlet 41 and the outdoor air inlet 42. The first ventilation opening 11 corresponds to the outdoor air inlet 42, and the second ventilation opening 12 corresponds to the outdoor air outlet 41. In this way, by applying the air valve device of the present invention, the control of three states of the outdoor air outlet 41 and the outdoor air inlet 42 can be realized, so as to meet the control requirements of the fresh air blower for the air valve device.

[0044] Specifically, as Figure 6 shown, the fresh air blower includes an external circulation mode. In the external circulation mode, the first air valve 21 is located on the right side of the first ventilation opening 11, and the second air valve 22 is located on the left side of the second ventilation opening 12; as Figure 7 shown, the fresh air blower includes an internal circulation mode. In the internal circulation mode, the first air valve 21 is located on the first ventilation opening 11, and the second air valve 22 is located on the second ventilation opening 12; as Figure 8 shown, the fresh air blower includes a composite circulation mode. In the composite circulation mode, the first air valve 21 is located on the left side of the first ventilation opening 11, and the second air valve 22 is located on the second ventilation opening 12.

[0045] More preferably, a fresh air duct and an exhaust air duct are formed inside the housing 40. The fresh air duct is respectively connected to the outdoor air inlet 42 and the indoor air outlet 43, and the exhaust air duct is respectively connected to the outdoor air outlet 41 and the indoor air inlet 44. As Figures 6 to 8 shown, the dotted line part connecting the air vents is the air flow direction from the outdoor air to the indoor air, and the solid line part connecting the air vents is the air flow direction from the indoor air to the outdoor air. Preferably, a communication hole 45 connecting the fresh air duct and the exhaust air duct is provided at the outdoor air outlet 41. A partition 221 is provided on the second air valve 22. In the external circulation mode, the partition 221 closes the communication hole 45; in the internal circulation mode and the composite circulation mode, the partition 221 opens the communication hole 45.

[0046] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various changes and modifications can be made to the embodiments of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A damper device, characterized in that, Comprising: A damper (10) having at least two ventilation openings formed therein; At least two air valves (20) movably mounted on the ventilation openings respectively; At least one driving mechanism (30) disposed between two adjacent air valves (20) and drivingly connected to the two air valves (20) respectively. The driving mechanism (30) includes an open state in which the two air valves (20) are driven to move relatively closer to open the two ventilation openings, and a closed state in which the two air valves (20) are driven to move relatively away from each other to close the two ventilation openings; The driving mechanism (30) includes: A screw driving member (31) having a first thread section (311) and a second thread section (312) spaced apart therefrom. The helix angle direction of the first thread section (311) is opposite to that of the second thread section (312). The two air valves (20) are respectively mounted on the first thread section (311) and the second thread section (312) through nut structures (32); The air valve (20) includes a first air valve (21) and a second air valve (22). The ventilation openings include a first ventilation opening (11) and a second ventilation opening (12). The first air valve (21) is mounted on the first thread section (311), and the second air valve (22) is mounted on the second thread section (312). On the screw driving member (31), the first thread section (311) extends from the right side of the first ventilation opening (11) to the left side of the first ventilation opening (11). On the screw driving member (31), the second thread section (312) is only distributed on the left side of the second ventilation opening (12). A smooth rod section (313) is located on the right side of the second thread section (312) on the screw driving member (31); The driving mechanism (30) further includes a magnet (34) and an electromagnetic generating member (35). The magnet (34) is mounted on the second air valve (22), and the electromagnetic generating member (35) is mounted on the damper (10). The electromagnetic generating member (35) generates a magnetic force on the magnet (34) to drive the second air valve (22) to move towards the second thread section (312); A limiting member (13) is provided on the damper (10), and the air valve (20) is movably mounted on the limiting member (13).

2. The air valve device according to claim 1, characterized in that, The limiting member (13) is a limiting chute.

3. The air valve device according to claim 1, wherein, A sealing ring (14) is provided on the damper (10) at the ventilation opening for cooperating with the air valve (20) for sealing.

4. The air valve device according to claim 1, characterized in that The nut structure (32) is formed on the air valve (20).

5. The air valve device according to claim 1, characterized in that, The driving mechanism (30) further includes an elastic member (33) mounted on the smooth rod section (313). The elastic member (33) drives the second air valve (22) to move towards the second thread section (312) after being compressed.

6. The air valve device according to claim 5, characterized in that, The first end of the elastic member (33) is mounted on the second air valve (22) through a first engaging portion, and the second end of the elastic member (33) is fixedly mounted on the air damper (10) through a second engaging portion.

7. The air valve device according to claim 1, characterized in that, A partition (221) is provided on the second air valve (22), and the partition (221) is used to close the air duct.

8. The air valve device according to claim 2, wherein, There are two limiting chutes, and the two limiting chutes are respectively installed on the upper side and the lower side of the ventilation opening.

9. A fresh air unit, including a damper device, characterized in that, The air valve device is the air valve device according to any one of claims 1 to 8.

10. The fresh air blower according to claim 9, characterized in that, The fresh air fan includes a housing (40). An outdoor exhaust air outlet (41) and an outdoor fresh air inlet (42) are provided on one side of the housing (40), and an indoor exhaust air outlet (43) and an indoor fresh air inlet (44) are provided on the other side of the housing (40). The air valve device is installed at the outdoor exhaust air outlet (41) and the outdoor fresh air inlet (42). The first ventilation opening (11) corresponds to the outdoor fresh air inlet (42), and the second ventilation opening (12) corresponds to the outdoor exhaust air outlet (41).

11. The fresh air fan according to claim 10, wherein The fresh air fan includes: An external circulation mode. In the external circulation mode, the first air valve (21) is located on the right side of the first ventilation opening (11), and the second air valve (22) is located on the left side of the second ventilation opening (12). An internal circulation mode. In the internal circulation mode, the first air valve (21) is located on the first ventilation opening (11), and the second air valve (22) is located on the second ventilation opening (12). A composite circulation mode. In the composite circulation mode, the first air valve (21) is located on the left side of the first ventilation opening (11), and the second air valve (22) is located on the second ventilation opening (12).

12. The fresh air blower according to claim 11, wherein, A fresh air duct and an exhaust air duct are formed in the housing (40). The fresh air duct is respectively communicated with the outdoor fresh air inlet (42) and the indoor exhaust air outlet (43), and the exhaust air duct is respectively communicated with the outdoor exhaust air outlet (41) and the indoor fresh air inlet (44). A communication hole (45) communicating the fresh air duct and the exhaust air duct is provided at the outdoor exhaust air outlet (41), and a partition (221) is provided on the second air valve (22). In the external circulation mode, the partition (221) closes the communication hole (45). In the internal circulation mode and the composite circulation mode, the partition (221) opens the communication hole (45).

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