Bypass switch structure of centralized fresh air system

Abstract

The utility model provides a bypass switch structure of a centralized fresh air system, which comprises a frame, a motor fixed on one side of the lower end of the frame, an electric baffle fixedly connected with the output end of the motor through a short shaft, and a V-shaped bypass baffle rotationally connected with the upper end of the frame through a torsion spring. And installation and maintenance are convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of fresh air system equipment, and in particular relates to a bypass switch structure of a centralized fresh air system. Background Art

[0002] In a centralized fresh air system, when the temperature difference between indoor and outdoor is not large or outdoor air is needed to cool or heat the indoor environment, the indoor and outdoor air do not need to pass through the heat exchanger to exchange energy. Therefore, the bypass mode designed can block the indoor air from entering the heat exchanger and make it enter the bypass channel, achieving the purpose of ventilation without exchanging energy. However, the existing bypass mode, such as Figure 1 As shown (bypass open state), the bypass motor is used to drive the baffle connected to it to rotate, so that the baffle blocks the passage for the incoming air to enter the heat exchanger. The incoming air enters the opened bypass passage under the action of the fan and is then discharged. However, the bypass motor of the bypass switch is located in the middle layer inside the machine, which is very troublesome to install and maintain. Summary of the invention

[0003] The problem to be solved by the utility model is to provide a bypass switch structure of a centralized fresh air system which has a simple structure and is easy to install and maintain.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a bypass switch structure of a centralized fresh air system, including a frame, a motor fixed on one side of the lower end of the frame, an electric baffle fixedly connected to the motor output end through a first short shaft, and a V-shaped bypass baffle rotatably connected to the upper end of the frame through a torsion spring.

[0005] Furthermore, the frame includes two side plates arranged relatively parallel to each other, a bottom plate connected to the lower ends of the two side plates, and a top plate connected to the upper ends of the two side plates, and the top plate is provided with a bypass vent connected to the bypass channel.

[0006] Furthermore, the electric baffle is located between the bottom plate and the top plate and at a side away from the bypass vent. The output end of the motor is fixedly sleeved with a first short shaft, and the first short shaft is fixedly connected to the lower end of the electric baffle.

[0007] Furthermore, a second short shaft is fixedly connected to a side of the electric baffle away from the first short shaft, and the second short shaft is rotatably connected to the side plate.

[0008] Furthermore, the V-shaped bypass baffle includes a sealing portion and a control portion, and fixing columns are provided at the connection points at both ends of the sealing portion and the control portion, the torsion spring is sleeved on the fixing columns, the free end of the fixing column is rotatably connected to the baffle bearing, and the baffle bearing is fixedly arranged on the side plate.

[0009] Furthermore, the sealing portion is located at the lower end of the bypass vent and is matched with the bypass vent.

[0010] Furthermore, the control part is a hollow frame structure, and when the bypass channel is in an open state, the control part is located above the electric baffle and is in contact with and connected to the electric baffle.

[0011] Compared with the prior art, the utility model has the following advantages and beneficial effects: the bypass switch structure of the utility model, by installing a motor to the lower end of the frame, the motor controls the electric baffle to rotate, when the bypass channel is in the open state, the motor controls the electric baffle to be in a vertical state, sealing the channel for incoming air to enter the heat exchanger, and at the same time, the upper part of the electric baffle presses one end of the V-shaped bypass baffle, so that the bypass vent is opened and the bypass channel is opened, when the bypass channel needs to be closed, the motor controls the electric baffle to rotate 90 degrees and is located on the bottom plate of the frame, opening the channel for incoming air to enter the heat exchanger, and at the same time, the V-shaped bypass baffle returns to its initial state under the action of the torsion spring, sealing the bypass vent. Therefore, the bypass channel is closed by controlling the rotation of the electric baffle by the motor and combining the torsion spring to control the opening and closing of the V-shaped bypass baffle, the structure is simple and controllable, and at the same time, the motor of this structure is located close to the outer surface of the machine, which is convenient for installation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The utility model is a schematic diagram of the installation structure of the bypass switch structure of the centralized fresh air system in the prior art in the fresh air system.

[0013] Figure 2 The utility model is a structural schematic diagram of a bypass switch structure of a centralized fresh air system controlling a bypass channel to be in an open state.

[0014] Figure 3 yes Figure 1 Schematic diagram of the internal structure without the frame top plate and one side plate.

[0015] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0016] Figure 5 yes Figure 2 Schematic diagram of the top view structure.

[0017] Figure 6 yes Figure 2 Schematic diagram of the front view structure.

[0018] Figure 7 yes Figure 2 Schematic diagram of the rear view structure.

[0019] Figure 8The utility model is a schematic diagram of the installation structure of a bypass switch structure of a centralized fresh air system in a state where a bypass channel in the fresh air system is opened.

[0020] Fig. 9 The utility model is a schematic diagram of the installation structure of a bypass switch structure of a centralized fresh air system in a state where a bypass channel in the fresh air system is closed.

[0021] In the figure: 1-frame; 2-motor; 3-first short shaft; 4-electric baffle; 5-torsion spring; 6-V-type bypass baffle; 7-side plate; 8-bottom plate; 9-top plate; 10-bypass channel; 11-bypass vent; 12-second short shaft; 13-sealing part; 14-control part; 15-fixing column; 16-flange bearing. DETAILED DESCRIPTION

[0022] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings.

[0023] like Figure 1-Figure 9 As shown, a bypass switch structure of a centralized fresh air system includes a frame 1, a motor 2 fixed to one side of the lower end of the frame 1, an electric baffle 4 fixedly connected to the output end of the motor 2 through a first short shaft 3, and a V-shaped bypass baffle 6 rotatably connected to the upper end of the frame 1 through a torsion spring 5.

[0024] Specifically, the output end of the motor 2 of the utility model is fixedly connected to the first short shaft 3, and then fixedly connected to the electric baffle 4 through the first short shaft 3, so that the motor 2 controls the opening and closing rotation of the electric baffle 4, thereby controlling the opening or closing of the air inlet channel of the heat exchanger. At the same time, through the rotation of the electric baffle 4 and the elastic potential energy of the torsion spring 5, the V-shaped bypass baffle 6 can be controlled to close or open the bypass channel 10. The utility model can realize the opening or closing of the bypass channel 10 by controlling the rotation of the electric baffle 4 through the motor 2. The structure is simple and the operation is convenient. At the same time, the motor 2 can be installed at the lower end of the frame 1 close to the outer surface of the machine, which is convenient for installation and maintenance.

[0025] Furthermore, the frame 1 includes two side panels 7 arranged relatively parallel, a bottom panel 8 connected to the lower ends of the two side panels 7 and a top panel 9 connected to the upper ends of the two side panels 7 , and the top panel 9 is provided with a bypass vent 11 connected to the bypass channel 10 .

[0026] Furthermore, the electric baffle 4 is located between the bottom plate 8 and the top plate 9 and at a side away from the bypass vent 11 , and the output end of the motor 2 is fixedly sleeved with a first short shaft 3 , which is fixedly connected to the lower end of the electric baffle 4 .

[0027] Specifically, the electric baffle 4 is located between the bottom plate 8 and the top plate 9. The motor 2 drives the first short shaft 3 to rotate, thereby driving the electric baffle 4 to rotate. The electric baffle 4 is used to open or close the air inlet of the heat exchanger. When the electric baffle 4 is in a vertical state, the air inlet of the heat exchanger is closed. When the electric baffle 4 is in a parallel state and located on the bottom plate, the air inlet of the heat exchanger is opened.

[0028] Furthermore, a second short shaft 12 is fixedly connected to a side of the electric baffle 4 away from the first short shaft 3 , and the second short shaft 12 is rotatably connected to the side plate 7 .

[0029] Specifically, a second short shaft 12 is provided at the other end of the electric baffle 4 and is rotatably connected to the side plate 7 to balance the force of the other side motor 2 rotating the electric baffle 4, so that the motor 2 drives the electric baffle 4 to rotate more stably.

[0030] Furthermore, the V-shaped bypass baffle 6 includes a sealing portion 13 and a control portion 14, and a fixing column 15 is provided at the connection between the two ends of the sealing portion 13 and the control portion 14, the torsion spring 5 is sleeved on the fixing column 15, and the free end of the fixing column 15 is rotatably connected to the baffle bearing 16, and the baffle bearing 16 is fixedly set on the side plate 7, the sealing portion 13 is located at the lower end of the bypass vent 11 and is matched with the bypass vent 11, and the control portion 14 is a hollow frame structure. When the bypass channel is in an open state, the control portion 14 is located above the electric baffle 4 and is in contact with and connected to the electric baffle 4.

[0031] Specifically, the V-shaped bypass baffle 6 can swing around the center line of the fixed column 15 through the connection between the fixed column 15 and the retaining side bearing 16. At the same time, since the torsion spring 5 is sleeved on the fixed column 15, the V-shaped bypass baffle 6 is under the action of the torsion spring 5. The initial state of the V-shaped bypass baffle 6 is that the sealing part 13 contacts the bypass vent 11, so that the bypass vent 11 is closed. When the bypass channel 10 needs to be opened, the electric baffle 4 gradually changes from a parallel state to a vertical state under the action of the motor 2. During this process, the electric baffle 4 presses the control part 14 of the V-shaped bypass baffle 6 to rotate the V-shaped bypass baffle 6. Finally, the electric baffle 4 is in a vertical state and presses the control part 14. At this time, the sealing part 13 also rotates downward, and the bypass vent 11 is opened.

[0032] In addition, the control unit 14 is provided with a hollow frame structure, so that when the bypass channel 10 is closed, the control unit 14 is located at the air inlet of the heat exchanger and does not affect the air entering the heat exchanger.

[0033] The working process of the utility model is as follows: the motor 2 is installed to the lower end of the frame 1. In the initial state, the bypass channel 10 is closed, the electric baffle 4 is located on the bottom plate 8 of the frame 1, and the air inlet of the heat exchanger is opened. When heat exchange is not needed, the bypass channel 10 needs to be opened, and the motor 2 drives the electric baffle 4 to gradually change from a parallel state to a vertical state. During this process, the electric baffle 4 presses the control part 14 of the V-shaped bypass baffle 6 to rotate the V-shaped bypass baffle 6. Finally, the electric baffle 4 is in a vertical state and presses the control part 14. At the same time, the sealing part 13 also rotates downward, and the bypass vent 11 is opened. When it is necessary to restore the initial state, the motor 2 drives the electric baffle 4 from the vertical state to a parallel state again. At the same time, the V-shaped bypass baffle 6 also restores the initial state under the action of the torsion spring 5, and the sealing part 13 seals the bypass vent 11. At this point, the bypass channel 10 is closed, the air inlet of the heat exchanger is opened, and the initial state is restored.

[0034] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A bypass switch structure for a centralized fresh air system, characterized in that: The utility model comprises a frame, a motor fixed on one side of the lower end of the frame, an electric baffle fixedly connected to the output end of the motor through a first short shaft, and a V-shaped bypass baffle rotatably connected to the upper end of the frame through a torsion spring.

2. The bypass switch structure of a centralized fresh air system according to claim 1, characterized in that: The frame comprises two side plates arranged relatively parallel to each other, a bottom plate connected to the lower ends of the two side plates and a top plate connected to the upper ends of the two side plates, wherein the top plate is provided with a bypass vent connected to the bypass channel.

3. The bypass switch structure of a centralized fresh air system according to claim 2, characterized in that: The electric baffle is located between the bottom plate and the top plate and at a side away from the bypass vent. The output end of the motor is fixedly sleeved with a first short shaft, and the first short shaft is fixedly connected to the lower end of the electric baffle.

4. The bypass switch structure of a centralized fresh air system according to claim 3, characterized in that: A second short shaft is fixedly connected to one side of the electric baffle away from the first short shaft, and the second short shaft is rotatably connected to the side plate.

5. The bypass switch structure of a centralized fresh air system according to claim 2, characterized in that: The V-shaped bypass baffle includes a sealing part and a control part. The connection between the sealing part and the control part at both ends is provided with a fixing column. The torsion spring is sleeved on the fixing column. The free end of the fixing column is rotatably connected to the baffle bearing. The baffle bearing is fixedly arranged on the side plate.

6. The bypass switch structure of a centralized fresh air system according to claim 5, characterized in that: The sealing portion is located at the lower end of the bypass vent and is matched with the bypass vent.

7. The bypass switch structure of a centralized fresh air system according to claim 5, characterized in that: The control part is a hollow frame structure. When the bypass channel is in an open state, the control part is located above the electric baffle and is in contact with and connected to the electric baffle.

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