Silent and self-adaptive constant wind pressure exhaust device

Abstract

The utility model discloses a mute and self-adaptive constant wind pressure exhaust device, which comprises an exhaust outlet and an exhaust fan which are assembled and connected in a split manner, the exhaust outlet is embedded in an indoor suspended ceiling and is provided with a downward opening, and the exhaust fan is hung in a cavity on the inner side of the indoor suspended ceiling and is separated from the exhaust outlet by a certain distance. The side, back on to the interior of the room, of the exhaust outlet is communicated with the exhaust fan through an exhaust pipe for steering and drainage, the exhaust fan is a direct-current speed-regulating fan controlled by the electric control box, and the electric control box monitors the indoor negative pressure value in real time and adjusts the output rotating speed of the exhaust fan. By means of the exhaust device, noise of a traditional exhaust fan is effectively prevented from being transmitted into a room, the indoor negative pressure value is monitored all the time, the rotating speed of the exhaust fan is synchronously adjusted, and the stability of the indoor negative pressure can be maintained; and in addition, outdoor air backflow and bacteria breeding in the protection equipment are avoided.

Description

Technical Field

[0001] The utility model relates to an indoor air conditioning integrated device, in particular to an exhaust device suitable for toilets, chess and card rooms, smoking areas and the like, which can achieve quietness and adaptive constant wind pressure, and belongs to the technical field of electromechanical applications. Background Art

[0002] In often-closed indoor spaces like restrooms, smoking rooms, chess and card rooms, various laboratories, and specialized processing workshops, conventional mechanical exhaust fans are commonly used to draw air outdoors, creating a negative pressure inside the room and allowing fresh air to flow in through gaps elsewhere. This maintains a basic oxygen balance in these spaces, ensuring a certain degree of health for those within them.

[0003] Currently, the most common mechanical exhaust fans in the ventilation field are primarily manual-shift type. This means the fan's output power and air volume are switched by adjusting the shift position via a manual control panel. Operation is relatively simple, with some units featuring only an on / off function. However, considering the integrated installation and structural characteristics of exhaust devices, most exhaust fans are integrated into the exhaust vents as integrated modules. While this facilitates equipment assembly, it lacks a means to suppress fan noise, allowing it to be transmitted directly into the room and causing discomfort. Furthermore, these fans only provide rough exhaust, resulting in high energy consumption and an inability to control negative pressure in the exhaust area. Summary of the Invention

[0004] The purpose of the utility model is to provide a silent and self-adaptive constant wind pressure exhaust device to solve the problem of indoor pollution caused by exhaust fan noise.

[0005] The technical solution for achieving the above-mentioned purpose in the utility model is a silent and adaptive constant wind pressure exhaust device, comprising a split-type exhaust outlet and an exhaust fan, the exhaust outlet being embedded in the indoor ceiling with the opening facing downward, the exhaust fan being suspended in the inner cavity of the indoor ceiling and separated from the exhaust outlet by a distance, the side of the exhaust outlet facing away from the indoor room being connected to the exhaust fan through an exhaust duct for steering diversion, the exhaust fan being a DC speed-regulating fan controlled by an electronic control box, the electronic control box monitoring the indoor negative pressure value in real time, and adjusting the output speed of the exhaust fan.

[0006] Furthermore, the exhaust fan is provided with a microporous silencer cavity at the front end in the air inlet direction.

[0007] Furthermore, it also includes a negative ion sterilization module arranged in the microporous silencer cavity, and the negative ion sterilization module is driven by the electric control box to open and close periodically.

[0008] Furthermore, the exhaust fan is provided with a magnetic check valve in the exhaust direction.

[0009] Furthermore, it also includes a micro-pressure differential transmitter fixedly connected to the corner of the inner wall of the exhaust port, and the micro-pressure differential transmitter is connected to the electric control box through a signal line.

[0010] Furthermore, the exhaust fan is provided with a first air outlet flange on the air inlet side, and the first air outlet flange is connected to the exhaust outlet through a section of exhaust pipe; the exhaust fan is provided with a second air outlet flange on the exhaust side, and the second air outlet flange is connected to the wall hole leading to the outside of the building through a section of exhaust pipe.

[0011] Furthermore, the air outlet is provided with a panel facing the room, and the side wall is provided with a spring clip for cooperating with the panel to clamp the indoor ceiling.

[0012] Furthermore, the exhaust fan and the electric control box are powered by an external power supply, and the electric control box is integrated with a communication module and is controlled by a signal-interconnected indoor operation panel or a remote control master switch.

[0013] Furthermore, the inner wall of the air cavity of the air outlet is provided with sound-absorbing cotton.

[0014] The technical effects and advantages of applying the exhaust device of the present invention include: 1) The device is equipped with a silencer chamber and adopts a design in which the air outlet and the main unit of the device are installed across a distance, which effectively prevents the noise of traditional exhaust fans from being transmitted into the room. 2) The exhaust passage is sealed with a magnetic check valve, which can prevent outdoor air from flowing back into the room during severe windy weather or long-term travel, causing hazards such as indoor dust. 3) By constantly monitoring the indoor negative pressure value and synchronously adjusting the exhaust fan speed, the stability of the negative pressure is maintained, thereby achieving the goals of energy conservation, emission reduction and efficient ventilation; and the operating conditions of the equipment are adaptively adjusted without the need for an additional control panel, which significantly improves the convenience of use. 4) The built-in negative ion sterilization module can prevent the growth of internal bacteria during long-term ventilation in humid spaces such as bathrooms, thereby preventing indoor pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the installation structure of a preferred embodiment of the exhaust device of the present utility model.

[0016] Figure 2 It is a multi-view structural schematic diagram of the exhaust fan in the exhaust device of the utility model.

[0017] Figure 3 It is a multi-view structural schematic diagram of the exhaust port in the exhaust device of the utility model. DETAILED DESCRIPTION

[0018] The specific implementation methods of the present invention will be further described below in conjunction with the accompanying drawings of the embodiments, so that the technical solution of the present invention is easier to understand and grasp, thereby making a clearer definition of the protection scope of the present invention.

[0019] In order to improve the many inherent deficiencies of existing indoor exhaust equipment, the designer of this utility model has innovatively proposed a silent and adaptive constant wind pressure exhaust device according to specific technical transformation directions and performance pursuits. It is widely used for non-sensitive exhaust gas extraction in environments such as toilets, smoking rooms, and chess and card rooms.

[0020] like Figure 1 As shown in the schematic diagram of the installation structure of the preferred embodiment of the exhaust device of the present invention, it is mainly composed of a split-type exhaust vent 3 and an exhaust fan 2. Conventional indoor building structures currently include vertical load-bearing exterior wall panels 12, horizontal floor panels 11, and a suspended ceiling panel 13 for interior decoration. The exhaust device of the present invention is internally installed in between these panels using a hoisting tool 14. Specifically, as shown in the figure, the exhaust vent 3 is embedded in the suspended ceiling panel 13 indoors, with its opening facing downward. The exhaust fan 2 is hoisted into the inner cavity of the indoor suspended ceiling and separated from the exhaust vent 3 by a distance, preferably at least 50 cm. The side of the exhaust vent 3 facing away from the indoor environment is connected to the exhaust fan 2 via an exhaust duct 82 for diverting and diverting air flow. Furthermore, the exhaust fan 2 is preferably a DC speed-controlled fan controlled by an electronic control box 5. The electronic control box 5 can be configured to monitor the indoor negative pressure in real time and adjust the exhaust fan's output speed.

[0021] This shows that the exhaust device, through the improvement of the split structure, separates the moving parts that drive the exhaust from the air outlet and optimizes the sound insulation, which can prevent the exhaust fan operating noise from directly entering the room. In this way, people in the indoor environment will no longer be affected by this noise pollution when carrying out related life and production activities.

[0022] As a detailed optimization of the exhaust device, such as Figure 2 As shown, the exhaust fan 2 is equipped with a microporous silencer chamber 4 at its front end, facing the air inlet. Its inner wall features a microporous design to capture internal noise. Furthermore, the interlayer of the microporous silencer chamber is filled with high-density BASF sound-absorbing foam, which gradually attenuates the noise through continuous reflection and refraction, ultimately eliminating it. This reduces the intensity of noise transmitted into the room.

[0023] Of course, this preferred embodiment also incorporates a negative ion sterilization module 41 within the microporous silencer chamber. Normally, it remains de-energized and silent during exhaust operation. However, when exhaust is interrupted, it can be periodically activated by the electronic control box to sterilize the exhaust fan and the interior of the microporous silencer chamber, thereby preventing bacterial growth within the equipment and potentially contaminating the air duct, exhaust vent, and indoor space.

[0024] The exhaust fan 2 is equipped with a first air outlet flange 21 on the air inlet side, which is connected to the exhaust outlet 3 via a curved exhaust pipe 82 with a diverting diversion mechanism. The exhaust fan 2 is equipped with a second air outlet flange 22 on the exhaust side, which is connected to a wall hole 121 leading to the outside of the building via a straight exhaust pipe 81. This provides operational convenience for the installation and technical maintenance of the exhaust device. From the second air outlet flange, the exhaust fan is equipped with a magnetic check valve 7 in the exhaust direction, which provides a directional seal for the exhaust duct. This prevents outdoor air from flowing back into the room during inclement weather or long-term travel, causing indoor dust and other problems.

[0025] From the perspective of energy supply, the exhaust fan and the electrical control box are powered by an external power supply through the power bus 92, and the electrical control box can optionally integrate a communication module, which can be interconnected by signals using a pre-adapted indoor operation panel or remote control, and the device can be controlled to switch on and off.

[0026] To ensure that the exhaust device maintains a relatively stable negative pressure while extracting stale air from the room, thereby preventing adverse physiological reactions in those inside, a micro-pressure differential transmitter 6, affixed to a corner of the exhaust vent's inner wall, serves as an auxiliary signal collector for the electronic control box. This transmitter is connected to the electronic control box 5 via a signal line 91. This ensures constant monitoring of the indoor negative pressure. The electronic control box then adjusts the exhaust fan's output power and speed (i.e., the operating conditions of the adaptive adjustment device) based on a preset negative pressure range, maintaining a stable indoor negative pressure. This eliminates the need for a separate negative pressure control panel and achieves the goals of energy conservation, emission reduction, and efficient ventilation.

[0027] In addition, in order to suppress noise in multiple ways, the inner wall of the air cavity of the exhaust port 3 can also be optionally provided with silencer cotton 33, so as to achieve more thorough silent operation of the equipment.

[0028] From the above introduction and detailed description of the improved silent and adaptive indoor negative pressure exhaust device and its embodiments, it can be seen that it possesses outstanding substantive features and significant advancements. The technical effects achieved include: 1) The device incorporates a silencer chamber and employs a design where the air outlet is mounted across the device body, effectively preventing the transmission of noise from traditional exhaust fans into the room. 2) A magnetic check valve seals the exhaust passage, preventing outdoor air from backflowing into the room during inclement weather or long trips, potentially causing dust accumulation and other hazards. 3) By constantly monitoring the indoor negative pressure and adjusting the exhaust fan speed, the device maintains a stable negative pressure, achieving energy savings, emission reduction, and efficient ventilation. Furthermore, the device's operating conditions are adaptively adjusted, eliminating the need for a separate control panel and significantly improving ease of use. 4) A built-in negative ion sterilization module prevents bacterial growth during long-term ventilation in humid spaces such as bathrooms, thereby preventing indoor contamination.

[0029] In addition to the above embodiments, the present invention may also have other implementation methods. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A silent and adaptive constant air pressure exhaust device, characterized by: The utility model comprises a split-type exhaust vent and an exhaust fan, wherein the exhaust vent is embedded in the indoor ceiling with the opening facing downward, the exhaust fan is suspended in the inner cavity of the indoor ceiling and is separated from the exhaust vent by a distance, and the side of the exhaust vent facing away from the indoor room is connected to the exhaust fan through an exhaust duct for diverting drainage, and the exhaust fan is a DC speed-regulating fan controlled by an electrical control box, and the electrical control box monitors the indoor negative pressure value in real time and adjusts the output speed of the exhaust fan.

2. The silent and adaptive constant air pressure exhaust device according to claim 1, characterized in that: The exhaust fan is provided with a microporous silencer cavity at the front end in the air inlet direction.

3. The silent and adaptive constant air pressure exhaust device according to claim 1, characterized in that: It also includes a negative ion sterilization module arranged in the microporous silencer cavity, and the negative ion sterilization module is driven by the electric control box to open and close periodically.

4. The silent and adaptive constant air pressure exhaust device according to claim 1, characterized in that: The exhaust fan is provided with a magnetic check valve in the exhaust direction.

5. The silent and adaptive constant air pressure exhaust device according to claim 1 is characterized in that: It also includes a micro-pressure differential transmitter fixedly connected to the corner of the inner wall of the exhaust port, and the micro-pressure differential transmitter is connected to the electric control box through a signal line.

6. The silent and adaptive constant air pressure exhaust device according to claim 1, characterized in that: The exhaust fan is provided with a first air outlet flange on the air inlet side, and the first air outlet flange is connected to the exhaust outlet through a section of exhaust pipe; the exhaust fan is provided with a second air outlet flange on the exhaust side, and the second air outlet flange is connected to the wall hole leading to the outside of the building through a section of exhaust pipe.

7. The silent and adaptive constant air pressure exhaust device according to claim 1, characterized in that: The air outlet is provided with a panel facing the room, and the side wall is provided with a spring clip for cooperating with the panel to clamp the indoor ceiling.

8. The silent and adaptive constant air pressure exhaust device according to claim 1, characterized in that: The exhaust fan and the electric control box are powered by an external power supply, and the electric control box is integrated with a communication module and is controlled by a signal-interconnected indoor operation panel or a remote control master switch.

9. The silent and adaptive constant air pressure exhaust device according to claim 1, characterized in that: The inner wall of the air cavity of the air outlet is provided with sound-absorbing cotton.

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