Quick open damper

Abstract

The present invention discloses a quick-opening damper, belonging to the technical field of hot air duct dampers, comprising a base frame, a door panel, a connecting mechanism and a power device, wherein a channel corresponding to the size of the door panel is opened on the base frame, a power end of the power device is connected to one end of the connecting mechanism, and the other end of the connecting mechanism is connected to the door panel, and the connecting mechanism drives the door panel to perform translation and / or flipping actions under the drive of the power device, and the translation and / or flipping actions are achieved by driving the door panel, so that the door panel can not only translate but also flip to achieve ventilation of the air outlet, so that the door panel does not need to open in a straight line, which greatly reduces the space required for opening and closing the door panel, saves the space of the entire mechanism, and makes the structure of the quick-opening damper more compact and easier to install in a narrow space.

Description

Technical Field

[0001] The invention relates to the technical field of hot air duct dampers, and in particular to a quick-opening damper. Background Art

[0002] Quick-opening dampers are generally installed in the hot air duct of the heating furnace as a safety function component. They are opened urgently when the fan fails to achieve natural ventilation in the furnace, maintain basic combustion conditions and avoid accidents.

[0003] The quick-open damper is in a closed state for a long time. The high-performance seal can prevent the leakage of hot air, which helps to reduce the overall energy consumption of the equipment. The quick-open damper will only open when a fault state is interlocked during use, so the action must be absolutely reliable.

[0004] There are two traditional fast-opening dampers on the market, which are installed at the bottom and side of the hot air duct respectively, but they generally use a straight-stroke cylinder to hold or pull the door open. This has the problem of long stroke of the straight-stroke cylinder, too high overall size, large installation space, and affecting the compactness of the device.

[0005] Because accidents do not happen often, when the quick-opening damper is in the closed position for a long time, the cylinder push rod remains in the extended state, and the surface of the piston rod is prone to environmental corrosion. When it moves, the bearings and sealing rings may be scratched, affecting reliability. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a quick-opening damper.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] The quick-opening damper includes a base frame, a door panel, a connecting mechanism and a power device. A channel corresponding to the size of the door panel is opened on the base frame. The power end of the power device is connected to one end of the connecting mechanism, and the other end of the connecting mechanism is connected to the door panel. The connecting mechanism drives the door panel to perform translation and / or flipping movements under the drive of the power device.

[0009] By driving the door panel to achieve translation and / or flipping movements, the door panel can not only translate but also flip to achieve air vent ventilation. In this way, the door panel does not need to open in a straight line, which greatly reduces the space required for opening and closing the door panel, saves the space of the entire mechanism, and makes the structure of the quick-opening damper more compact and easier to install in a small space.

[0010] Specifically, the connecting mechanism includes a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, one end of the first connecting rod is hinged to the power end of the power device, the other end of the first connecting rod is hinged to one end of the second connecting rod, the other end of the second connecting rod is fixedly connected to one end of the third connecting rod and hinged to the base frame, the other end of the third connecting rod is hinged to the door panel, one end of the fourth connecting rod is hinged to the base frame, and the other end of the fourth connecting rod is hinged to the door panel.

[0011] By setting the connecting rod mechanism, the door panel can first move in a translational motion close to a straight track when opening, and then realize a flipping action, which not only ensures the stability of the air door opening but also can press the door panel through linear motion.

[0012] Specifically, the length ratio of the third connecting rod to the fourth connecting rod is between 1.2 and 1.5:1.

[0013] Through the length ratio of the third connecting rod and the fourth connecting rod, when the third connecting rod rotates 5 to 10 degrees, the door panel moves in an arc trajectory close to a straight line under the constraint of the fourth connecting rod, so that the door panel can translate in a nearly straight line trajectory.

[0014] Specifically, the length ratio of the first connecting rod to the second connecting rod is between 1.2 and 2:1.

[0015] By constraining the length of the first connecting rod and the second connecting rod, the first connecting rod and the second connecting rod can be arranged in the form of a toggle, so that a larger rotational torque can be provided at the positions of the second connecting rod and the third connecting rod when the connecting shaft translates, thereby ensuring the opening and clamping force of the door panel. At the same time, the power device can adopt a smaller power model, further reducing the space of the overall structure of the quick-opening damper.

[0016] Particularly, an elastic sealing member is provided between the base frame and the door panel.

[0017] The elastic seal ensures the tightness between the door panel and the base frame.

[0018] Specifically, the power device is a telescopic power device.

[0019] Preferably, a connecting shaft is provided between the power device and the first connecting rod, and the first connecting rod and the power device are connected via the connecting shaft.

[0020] Specifically, the door panel includes a connecting rod and a panel surface. The connecting rod is fixedly arranged in the center of the panel surface and is arranged perpendicular to the panel surface. The third connecting rod and the fourth connecting rod are both connected to the connecting rod. The distance from the hinge point of the third connecting rod and the connecting rod to the panel surface is smaller than the distance from the hinge point of the fourth connecting rod and the connecting rod to the panel surface.

[0021] Preferably, a mounting plate is also provided on the base frame, the mounting plate is fixedly connected to the base frame, and the power device and the connecting structure are both mounted on the mounting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the quick-opening damper proposed by the present invention when it is closed;

[0023] Figure 2 A schematic diagram and motion trajectory of the quick-opening damper proposed by the present invention when it is opened;

[0024] Figure 3 for Figure 1 Partial view of position A in the middle.

[0025] In the figure: 1 base frame, 2 elastic sealing member, 3 door panel, 4 third connecting rod, 5 fourth connecting rod, 6 second connecting rod, 7 first connecting rod, 8 connecting shaft, 9 power device, 10 connecting rod, 11 mounting plate. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] Reference Figure 1-3 The quick-opening damper includes a base frame, a door panel, a connecting mechanism and a power device. A channel corresponding to the size of the door panel is opened on the base frame. The power end of the power device is connected to one end of the connecting mechanism, and the other end of the connecting mechanism is connected to the door panel. The connecting mechanism drives the door panel to translate and / or flip under the drive of the power device. By driving the door panel to translate and / or flip, the door panel can not only translate but also flip to realize air vent ventilation. In this way, the door panel does not need to open in a straight line, which greatly reduces the space required for opening and closing the door panel, saves the space of the entire mechanism, and makes the structure of the quick-opening damper more compact and easier to install in a small space.

[0028] In order to achieve translation and rotation movements, the connecting mechanism includes a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, one end of the first connecting rod is hinged to the power end of the power device, the other end of the first connecting rod is hinged to one end of the second connecting rod, the other end of the second connecting rod is fixedly connected to one end of the third connecting rod and hinged to the base frame, the other end of the third connecting rod is hinged to the door panel, one end of the fourth connecting rod is hinged to the base frame, and the other end of the fourth connecting rod is hinged to the door panel. The setting of the connecting rod mechanism enables the door panel to first translate in a linear trajectory when opening, and then achieve a flipping movement, which not only ensures the stability of the damper opening but also can press the door panel through linear movement.

[0029] In order to achieve a stable translational motion, the length ratio of the third link to the fourth link is between 1.2 and 1.5: 1. Through the length ratio of the third link to the fourth link, when the third link is rotated 5 to 10 degrees, the door panel moves in a nearly straight arc trajectory under the constraint of the fourth connecting rod, so that the door panel can translate in a nearly straight trajectory.

[0030] In order to ensure the tightness of the door panel, the length ratio of the first connecting rod and the second connecting rod is between 1.2 and 2:1. Through the length constraints of the first connecting rod and the second connecting rod, the first connecting rod and the second connecting rod can be set in the form of a toggle, which can provide a greater rotational torque at the position of the second connecting rod and the third connecting rod when the connecting shaft translates, ensuring the opening and pressing force of the door panel, and at the same time allowing the power device to use a smaller power model, further reducing the space of the overall structure of the quick-opening damper.

[0031] Of course, in order to ensure sealing, an elastic sealing member is provided between the base frame and the door panel. By providing the elastic sealing member, the sealing between the door panel and the base frame is ensured.

[0032] For easy installation, a connecting shaft is provided between the power device and the first connecting rod, and the first connecting rod is connected to the power device through the connecting shaft. Similarly, the door panel includes a connecting rod and a panel surface, the connecting rod is fixedly arranged at the center of the panel surface and is arranged perpendicular to the panel surface, the third connecting rod and the fourth connecting rod are both connected to the connecting rod, and the distance from the hinge point of the third connecting rod and the connecting rod to the panel surface is smaller than the distance from the hinge point of the fourth connecting rod and the connecting rod to the panel surface.

[0033] A mounting plate is also provided on the base frame, the mounting plate is fixedly connected to the base frame, and the power device and the connecting structure are both mounted on the mounting plate.

[0034] The power device is a telescopic power device. In actual use, the power device is a cylinder or a hydraulic cylinder. As shown in the figure, when the door panel fits the base frame, the push rods of the cylinder and the hydraulic cylinder are retracted into the cylinder body, and will not rust due to long-term exposure to the air.

[0035] Taking opening the door panel as an example, when the door panel needs to be opened, the push rod extends forward from the cylinder body. Because the second link and the third link are relatively fixed, the first link will drive the end of the third link to rotate clockwise. However, due to the existence of the fourth link, the third link and the fourth link can only rely on their own rotation center to make circular motions similar to linear motions. Because at this time the ends of the third link and the fourth link are close to their respective highest points of rotation, the door panel is driven to leave the base in a translational manner. However, when the push rod continues to push, the ends of the fourth link and the third link rotate clockwise. At this time, the third link and the fourth link drive the door panel to rotate clockwise, realizing the rotation of the door panel, thereby opening a larger air inlet and ensuring the air intake.

[0036] Similarly, when the damper needs to be closed, the push rod retracts, first driving the door panel to rotate counterclockwise, and then driving the door panel to translate closer to the base frame, thereby closing the door panel.

[0037] In actual use, the elastic sealing member may be a rubber sealing ring or a metal sealing member.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Quick-opening damper, characterized by: It comprises a base frame, a door panel, a connecting mechanism and a power device, wherein the base frame is provided with a channel corresponding to the size of the door panel, the power end of the power device is connected to one end of the connecting mechanism, the other end of the connecting mechanism is connected to the door panel, and the connecting mechanism drives the door panel to perform translation and / or flipping actions under the drive of the power device; The connecting mechanism comprises a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, one end of the first connecting rod is hinged to the power end of the power device, the other end of the first connecting rod is hinged to one end of the second connecting rod, the other end of the second connecting rod is fixedly connected to one end of the third connecting rod and hinged to the base frame, the other end of the third connecting rod is hinged to the door panel, one end of the fourth connecting rod is hinged to the base frame, and the other end of the fourth connecting rod is hinged to the door panel; The length ratio of the third connecting rod to the fourth connecting rod is between 1.2 and 1.5:1; The length ratio of the first connecting rod to the second connecting rod is between 1.2 and 2:1; An elastic sealing member is provided between the base frame and the door panel; The door panel includes a connecting rod and a panel surface, the connecting rod is fixedly arranged in the center of the panel surface and is perpendicular to the panel surface, the third connecting rod and the fourth connecting rod are both connected to the connecting rod, and the distance from the hinge point of the third connecting rod and the connecting rod to the panel surface is smaller than the distance from the hinge point of the fourth connecting rod and the connecting rod to the panel surface.

2. The quick-opening damper according to claim 1, characterized in that: The power device is a telescopic power device.

3. The quick-opening damper according to claim 1, characterized in that: A connecting shaft is provided between the power device and the first connecting rod, and the first connecting rod and the power device are connected through the connecting shaft.

4. The quick-opening damper according to claim 1, characterized in that: The base frame is also provided with a mounting plate, the mounting plate is fixedly connected to the base frame, and the power device and the connecting structure are both mounted on the mounting plate.

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