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 of driving the two dampers to move in a first direction to open the two ventilation openings, and a closed state of driving the two dampers to move in a second direction opposite to the first direction 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 in the first direction to open the two ventilation openings or move in the second direction 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 separated by a partition to form 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. The air inlet and the exhaust outlet are provided with a second damper and a third damper that can close 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] It can be seen from the above that 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] The 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, which are respectively movably installed on the ventilation openings; 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 of driving the two dampers to move in a first direction to open the two ventilation openings, and a closed state of driving the two dampers to move in a second direction opposite to the first direction to close the two ventilation openings.

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

[0007] In one embodiment, the limiting member is a limiting chute, and the damper is installed in the 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 drive mechanism further includes disconnecting the drive connection with one air valve and driving the other air valve to continue moving in the second direction to keep one vent closed and then opening the other vent in a semi-closed state.

[0010] In one embodiment, the drive mechanism includes: a drive gear; two driven gears respectively meshing with the drive gear; and rack portions formed on two air valves respectively meshing with the two driven gears. In one embodiment, the air valves include a first air valve and a second air valve, the vents include a first vent and a second vent, the two driven gears include a first driven gear and a second driven gear, the first air valve meshes with the first driven gear, the second air valve meshes with the second driven gear, and a through hole is formed on the first air valve; when the drive mechanism is in the open state, the first driven gear drives the first air valve to move in the first direction to connect the through hole with the first vent, and the second driven gear drives the second air valve to move in the first direction to move the second air valve away to open the second vent; when the drive mechanism is in the closed state, the first driven gear drives the first air valve to move in the second direction to avoid the through hole from the first vent and make the first air valve block and close the first vent, and the second driven gear drives the second air valve to move in the second direction to block and close the second vent; when the drive mechanism is in the semi-closed state, the first driven gear drives the first air valve to continue moving in the second direction to move the first air valve away to open the first vent, the second driven gear disengages from the rack portion of the second air valve, and the second air valve continues to block and close the second vent.

[0011] In one embodiment, a connecting portion facing the second air valve is provided on the first air valve, and a mating portion facing the first air valve is provided on the second air valve, and the connecting portion is movably provided on the mating portion; when the drive mechanism runs from the closed state to the semi-closed state, the connecting portion moves relative to the mating portion, so that while the second air valve stops moving, the first air valve continues to move in the second direction; when the drive mechanism runs from the semi-closed state to the closed state, the connecting portion moves relative to the mating portion, and when the drive mechanism runs to the closed state, the connecting portion moves relative to the mating portion to a critical position, so that the second air valve continues to stop moving and the second air valve moves in the first direction; when the drive mechanism runs from the closed state to the open state, the connecting portion drives the mating portion to move, so that the first air valve drives the second air valve to move in the first direction to reset the rack portion of the second air valve to mesh with the second driven gear.

[0012] In one embodiment, the connecting portion is a plug-in structure, the mating portion is a slot structure, and an anti-disengagement protrusion is provided on the plug-in structure.

[0013] In one embodiment, a partition is provided on the second air valve, and the partition is used to close the air duct.

[0014] In one embodiment, there are two limiting sliding grooves, which are respectively installed on the upper side and the lower side of the ventilation opening.

[0015] The present invention also provides a fresh air fan, which includes the above-mentioned air valve device.

[0016] In one embodiment, the fresh air fan includes a housing. An outdoor exhaust air outlet and an outdoor air inlet are provided on one side of the housing, and an indoor exhaust air outlet and an indoor air inlet are provided on the other side of the housing. 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.

[0017] In one embodiment, the fresh air fan includes: an external circulation mode. In the external circulation mode, 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 the internal circulation mode, 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 the combined circulation mode, 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.

[0018] In one embodiment, a fresh air duct and an exhaust air duct are formed inside the housing. The fresh air duct is respectively communicated with the outdoor air inlet and the indoor exhaust air outlet, and the exhaust air duct is respectively communicated with the outdoor exhaust air outlet and the indoor air inlet. A communication hole for communicating the fresh air duct and the exhaust air duct is provided at the outdoor exhaust 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.

[0019] In the above-mentioned embodiment, two air valves can be simultaneously driven by a driving mechanism to move in the first direction to open the two ventilation openings or move in the second direction to close the two ventilation openings, thereby reducing the use of the driving mechanism and lowering the cost of the air valve device. Description of the Drawings

[0020] The drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0021] Figure 1 is a schematic structural diagram of the air valve device according to the embodiment of the present invention in the first state;

[0022] Figure 2 is Figure 1 a schematic structural diagram of the air valve device in the second state;

[0023] Figure 3 is Figure 1 a schematic structural diagram of the air valve device in the third state;

[0024] Figure 4 Yes Figure 1 Schematic diagram of the assembled state structure and the disassembled state structure of the first air damper and the second air damper of the air damper device;

[0025] Figure 5 Yes Figure 1 Schematic diagram of the structures of two mating states of the first air damper and the second air damper of the air damper device;

[0026] Figure 6 Schematic diagram of the structure of the fresh air unit according to the present invention in the external circulation mode;

[0027] Figure 7 Schematic diagram of the structure of the fresh air unit according to the present invention in the internal circulation mode;

[0028] Figure 8 Schematic diagram of the structure of the fresh air unit according to the present invention in the composite circulation mode. Detailed implementation manners

[0029] 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.

[0030] To solve the technical problems in the prior art, as Figure 1 and Figure 2 shown, the present invention provides an air damper device, which includes a damper 10, air dampers 20 and a driving mechanism 30. At least two ventilation openings are formed in the damper 10, and there are at least two air 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 air dampers 20 and is respectively drivingly connected to the two air dampers 20. The driving mechanism 30 includes an open state in which the two air dampers 20 are driven to move in a first direction to open the two ventilation openings, and a closed state in which the two air dampers 20 are driven to move in a second direction opposite to the first direction to close the two ventilation openings.

[0031] Applying the technical solution of the present invention, two air dampers 20 can be simultaneously driven by one driving mechanism 30 to move in the first direction to open the two ventilation openings or move in the second direction to close the two ventilation openings, thereby reducing the use of the driving mechanism 30 and lowering the cost of the air damper device.

[0032] As a preferred implementation manner, as Figure 1As shown, a limiting component 13 is provided on the air damper 10, and the air valve 20 is movably installed on the limiting component 13. By means of the limiting component 13, the stability and accuracy of the movement of the air valve 20 can be improved. Optionally, in the technical solution of this embodiment, the limiting component 13 is a limiting chute. More preferably, there are two limiting chutes, which 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 air valve 20 simultaneously, thereby further improving the stability of the movement of the air valve 20.

[0033] More preferably, as Figure 1 and Figure 2 shown, a sealing ring 14 is provided at the ventilation opening on the air damper 10. The sealing ring 14 is used to cooperate with the air valve 20 for sealing, thereby improving the sealing performance of the air valve 20 for the ventilation opening.

[0034] More preferably, in the technical solution of this embodiment, the driving mechanism 30 further includes disconnecting the driving connection with one air valve 20 and driving the other air valve 20 to continue moving in the second direction to keep one ventilation opening closed and then open the other ventilation opening in a semi-closed state. In this way, one ventilation opening can be opened and the other ventilation opening can be closed.

[0035] As Figure 2 and Figure 3 shown, as a more preferred embodiment, the driving mechanism 30 includes a driving gear 31 and two driven gears 32. The two driven gears 32 are respectively meshed with the driving gear 31, and rack portions meshed with the two driven gears 32 are respectively formed on the two air valves 20. In use, the driving gear 31 drives the two driven gears 32 to rotate clockwise or counterclockwise simultaneously, thereby driving the two air valves 20 to move in the first direction simultaneously to open the two ventilation openings or move in the second direction to close the two ventilation openings.

[0036] Preferably, in the technical solution of this embodiment, as Figure 1 , Figure 2 and Figure 3 shown, the air valve 20 includes a first air valve 21 and a second air valve 22, the ventilation opening includes a first ventilation opening 11 and a second ventilation opening 12, the two driven gears 32 include a first driven gear 32 and a second driven gear 32. The first air valve 21 is meshed with the first driven gear 32, the second air valve 22 is meshed with the second driven gear 32, and a through hole 212 is formed on the first air valve 21. As Figure 1 shown, when the driving mechanism is in the open state, the first driven gear 32 drives the first air valve 21 to move in the first direction to connect the through hole 212 with the first ventilation opening 11, and the second driven gear 32 drives the second air valve 22 to move in the first direction to move the second air valve 22 away to open the second ventilation opening 12. As Figure 2As shown, when the drive mechanism is in the closed state, the first driven gear 32 drives the first air valve 21 to move in the second direction, causing the through hole 212 to avoid the first ventilation opening 11 and the first air valve 21 to block and close the first ventilation opening 11. The second driven gear 32 drives the second air valve 22 to move in the second direction, causing the second air valve 22 to block and close the second ventilation opening 12. As Figure 3 shown, when the drive mechanism is in the semi-closed state, the first driven gear 32 drives the first air valve 21 to continue moving in the second direction to avoid and open the first ventilation opening 11. The second driven gear 32 disengages from the rack portion of the second air valve 22, and the second air valve 22 continues to block and close the second ventilation opening 12. In this way, the air valve device of the present invention can achieve the control of three states of the two ventilation openings, thus meeting the control requirements of the fresh air fan for the air valve device.

[0037] Preferably, in the technical solution of this embodiment, as Figure 4 and Figure 5 shown, in order to enable the rack portion of the second air valve 22 to be reset to engage with the second driven gear 32 after disengaging from the second driven gear 32. In the technical solution of this embodiment, a connecting portion 211 facing the second air valve 22 is provided on the first air valve 21, and a mating portion facing the first air valve 21 is provided on the second air valve 22. The connecting portion 211 is movably disposed on the mating portion 222. Specifically, when the drive mechanism operates from the closed state to the semi-closed state, the connecting portion 211 moves relative to the mating portion 222, causing the second air valve 22 to stop moving while the first air valve 21 continues to move in the second direction. When the drive mechanism operates from the semi-closed state to the closed state, the connecting portion 211 moves relative to the mating portion 222, and when the drive mechanism reaches the closed state, the connecting portion 211 moves relative to the mating portion 222 to a critical position, causing the second air valve 22 to continue to stop moving and the second air valve 22 to move in the first direction. When the drive mechanism operates from the closed state to the open state, the connecting portion 211 drives the mating portion 222 to move, causing the first air valve 21 to drive the second air valve 22 to move in the first direction, and the rack portion of the second air valve 22 is reset to engage with the second driven gear 32.

[0038] As a preferred implementation manner, as Figure 4 and Figure 5 shown, the connecting portion 211 is a plug-in structure, the mating portion 222 is a slot structure, and an anti-disengagement protrusion 2111 is provided on the plug-in structure. As other alternative implementation manners, a structure of a slider and a sliding groove in cooperation can also be used for substitution. As long as it is a mating structure that conforms to the above implementation principle, it should fall within the protection scope of the present invention.

[0039] As Figure 5 and Figure 6As 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.

[0040] As Figure 6 Figure 7 and Figure 8 As shown, the present invention also provides a fresh air fan, which includes the above-mentioned air valve device. Optionally, in the technical solution of this embodiment, the fresh air fan includes a housing 40. An outdoor exhaust port 41 and an outdoor air inlet 42 are provided on one side of the housing 40, and an indoor exhaust port 43 and an indoor air inlet 44 are provided on the other side of the housing 40. The air valve device is installed at the outdoor exhaust port 41 and the outdoor air inlet 42. The first ventilation port 11 corresponds to the outdoor air inlet 42, and the second ventilation port 12 corresponds to the outdoor exhaust port 41. In this way, by applying the air valve device of the present invention, the control of three states of the outdoor exhaust port 41 and the outdoor air inlet 42 can be realized, so as to meet the control requirements of the fresh air fan for the air valve device.

[0041] Specifically, as Figure 6 shown, 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 port 11, and the second air valve 22 is located on the left side of the second ventilation port 12; as Figure 7 shown, the fresh air fan includes an internal circulation mode. In the internal circulation mode, the first air valve 21 is located on the first ventilation port 11, and the second air valve 22 is located on the second ventilation port 12; as Figure 8 shown, the fresh air fan 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 port 11, and the second air valve 22 is located on the second ventilation port 12.

[0042] More preferably, a fresh air duct and an exhaust duct are formed in the housing 40. The fresh air duct is respectively communicated with the outdoor air inlet 42 and the indoor exhaust port 43, and the exhaust duct is respectively communicated with the outdoor exhaust port 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, and the solid line part connecting the air vents is the air flow direction from the indoor air to the outdoor. Preferably, a communication hole 45 communicating the fresh air duct and the exhaust duct is provided at the outdoor exhaust port 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.

[0043] 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, include: A damper (10), wherein the damper (10) is provided with at least two ventilation openings; At least two air valves (20) are movably mounted on the vents; At least one driving mechanism (30) is disposed between two adjacent air valves (20) and is respectively drivingly connected to the two air valves (20), the driving mechanism (30) comprising an open state in which the two air valves (20) are driven to move toward a first direction to open the two vents, and a closed state in which the two air valves (20) are driven to move toward a second direction opposite to the first direction to close the two vents; The driving mechanism (30) further comprises disconnecting the driving connection with one of the air valves (20) and driving the other air valve (20) to continue to move in the second direction, so as to keep one of the vents closed and then open the other vent to a semi-closed state; The driving mechanism (30) comprises: Drive gear (31); Two driven gears (32) respectively meshing with the driving gear (31); The two air valves (20) are respectively formed with two rack parts meshing with the two driven gears (32); The air valve (20) comprises a first air valve (21) and a second air valve (22); the vent comprises a first vent (11) and a second vent (12); the two driven gears (32) comprise a first driven gear (32) and a second driven gear (32); the first air valve (21) is meshed with the first driven gear (32); the second air valve (22) is meshed with the second driven gear (32); and the first air valve (21) is provided with a through hole (212); When the driving mechanism is in the open state, the first driven gear (32) drives the first air valve (21) to move toward the first direction so that the through hole (212) is connected to the first vent (11), and the second driven gear (32) drives the second air valve (22) to move toward the first direction so that the second air valve (22) avoids and opens the second vent (12); When the driving mechanism is in the closed state, the first driven gear (32) drives the first air valve (21) to move toward the second direction so that the through hole (212) avoids the first vent (11), and the first air valve (21) blocks and closes the first vent (11), and the second driven gear (32) drives the second air valve (22) to move toward the second direction so that the second air valve (22) blocks and closes the second vent (12); When the driving mechanism is in the semi-closed state, the first driven gear (32) drives the first air valve (21) to continue to move toward the second direction so that the first air valve (21) avoids opening the first vent (11), and the second driven gear (32) is disengaged from the rack portion of the second air valve (22), so that the second air valve (22) continues to block and close the second vent (12); A connecting portion (211) facing the second air valve (22) is provided on the first air valve (21), and a mating portion (222) facing the first air valve (21) is provided on the second air valve (22). The connecting portion (211) is movably provided on the mating portion (222). When the driving mechanism operates from the closed state to the semi-closed state, the connecting portion (211) moves relative to the mating portion (222), so that while the second air valve (22) stops moving, the first air valve (21) continues to move toward the second direction. When the driving mechanism operates from the semi-closed state to the closed state, the connecting portion (211) moves relative to the mating portion (222), and when the driving mechanism operates to the closed state, the connecting portion (211) moves to a critical position relative to the mating portion (222), so that the second air valve (22) continues to stop moving and the second air valve (22) moves toward the first direction. When the driving mechanism operates from the closed state to the open state, the connecting portion (211) drives the mating portion (222) to move, so that the first air valve (21) drives the second air valve (22) to move toward the first direction, and the rack portion of the second air valve (22) is reset to engage with the second driven gear (32).

2. The air valve device according to claim 1, characterized in that, A limiting member (13) is provided on the air door (10), and the air valve (20) is movably installed on the limiting member (13).

3. The air valve device according to claim 2, characterized in that, The limiting member (13) is a limiting chute, and the air valve (20) is installed in the limiting chute.

4. The air valve device according to claim 1, characterized in that, A sealing ring (14) is provided at the ventilation opening on the air door (10), and the sealing ring (14) is used for cooperating with the air valve (20) for sealing.

5. The air valve device according to claim 1, characterized in that, The connecting portion (211) is a plug-in structure, the mating portion (222) is a slot structure, and an anti-detachment protrusion (2111) is provided on the plug-in structure.

6. The air valve device according to claim 5, characterized in that, A partition (221) is provided on the second air valve (22), and the partition (221) is used for closing the air duct.

7. The air valve device according to claim 3, characterized in that, 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.

8. A fresh air unit, comprising a damper device, characterized in that, The air valve device is the air valve device according to any one of claims 1 to 7.

9. The fresh air fan according to claim 8, wherein, The fresh air fan includes a housing (40). An outdoor exhaust air outlet (41) and an outdoor air inlet (42) are provided on one side of the housing (40), and an indoor exhaust air outlet (43) and an indoor 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 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 exhaust air outlet (41).

10. The fresh air unit according to claim 9, 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). The internal circulation mode, in which 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); The composite circulation mode, in which 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).

11. The fresh air blower according to claim 10, 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 air inlet (42) and the indoor air outlet (43), and the exhaust air duct is respectively communicated with the outdoor air outlet (41) and the indoor air inlet (44). A communication hole (45) communicating the fresh air duct and the exhaust air duct is provided at the outdoor 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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