Gas exhaust linkage system

Abstract

The present application relates to a kind of gas exhaust linkage systems, comprising: detection system, for detecting gas concentration, and output gas concentration signal;Alarm system, for receiving gas concentration signal, determine whether gas concentration signal is abnormal, if so, output gas concentration abnormal signal;Alarm module, for receiving gas concentration abnormal signal and alarm;Strong exhaust system, strong exhaust control system is used to receive gas concentration abnormal signal, the strong exhaust control system includes first mode and second mode;Strong exhaust control system is in first mode, for after receiving gas concentration abnormal signal, control strong exhaust device opens;Strong exhaust control system is in second mode and controls strong exhaust device to open.It can exclude the air in room to the outside after the emergence of gas concentration abnormal signal, to reduce indoor gas concentration, simultaneously, through alarm module, can send alarm signal, remind user, do well preventive measures, to reduce security risk.

Description

Technical Field

[0001] This invention relates to the technical field of gas detection, and in particular to a gas forced ventilation linkage system. Background Technology

[0002] As people's living standards improve, natural gas is increasingly used in daily life. The widespread use of natural gas has improved production efficiency and the quality of life for citizens. However, accidents such as fires, explosions, and poisoning caused by gas leaks occur frequently during gas use, posing a serious threat to people's lives and property. Therefore, safe use of natural gas has always been of paramount importance.

[0003] To improve the safety of gas use, gas detection and alarm systems are usually installed in the space where gas appliances are located. When a gas leak is detected, the alarm system will automatically sound an alarm to remind the user to evacuate or turn off the gas valve in time. However, since leaked gas cannot dissipate quickly indoors, even if the gas valve is turned off, there is still a significant safety hazard. Summary of the Invention

[0004] To address the significant safety hazards associated with gas usage, this application provides a gas forced ventilation linkage system.

[0005] The above-mentioned objective of this invention is achieved through the following technical solution: a gas-fired forced exhaust ventilation linkage system, comprising: The detection system is used to detect the concentration of fuel gas and output a fuel gas concentration signal. The alarm system is used to receive gas concentration signals, determine whether the gas concentration signals are abnormal, and if so, output a gas concentration abnormality signal. The alarm module is used to receive and trigger an alarm for abnormal gas concentration signals; A forced ventilation system includes a forced ventilation device and a forced ventilation control system. The forced ventilation control system is used to receive abnormal gas concentration signals. The forced ventilation control system includes a first mode and a second mode. When the forced ventilation control system is in the first mode, it controls the forced ventilation device to start after receiving an abnormal gas concentration signal. When the forced ventilation control system is in the second mode, it controls the forced ventilation device to start.

[0006] By adopting the above technical solution, during use, the forced ventilation system can exhaust indoor air to the outside after an abnormal gas concentration signal is detected, thereby reducing the indoor gas concentration and thus reducing safety risks. At the same time, the alarm module can issue an alarm signal to remind users, enabling them to be aware of the gas leak signal in time and take preventive measures, thereby reducing safety hazards.

[0007] Preferably, when the forced ventilation control system is in the first mode, after the forced ventilation device is turned on, the alarm system determines whether the gas concentration signal continues to rise within a specified time. If so, it outputs a gas concentration abnormal rise signal. The alarm module receives a signal indicating an abnormal increase in gas concentration and issues an alarm.

[0008] By adopting the above technical solution, the indoor gas concentration can be determined by judging the indoor gas concentration in the strong exhaust mode. It can also judge the indoor ventilation status in a timely manner. If the gas concentration value does not decrease significantly within a specified time after the strong exhaust device is turned on, an alarm will be issued to notify the user to evacuate in time. When the gas concentration continues to increase, it can prevent major safety accidents.

[0009] Preferably, the alarm system determines whether the gas concentration is abnormal within a specified time. If so, it outputs a gas concentration abnormality signal.

[0010] By adopting the above technical solution, false alarms can be avoided when the gas stove fails to ignite in time and a short-term high gas concentration occurs, thus improving the accuracy of the system's judgment on gas leaks.

[0011] Preferably, the forced exhaust device includes: Fan, used for blowing / suctioning air; The air duct is connected to the fan and has an air outlet, which is normally closed.

[0012] By adopting the above technical solution, the fan can blow air into the room and also extract indoor air, thereby reducing the indoor gas concentration; the normally closed structure can keep the air vents closed when not in use, preventing external dust or rodents from entering the air duct and improving the overall service life of the equipment.

[0013] Preferably, the normally closed structure includes: The movable plate is slidably installed on the air duct along the air inlet / outlet direction; The first elastic element is located between the movable plate and the air duct; The second elastic element is located between the movable plate and the air duct. The movable plate closes the air vent under the combined action of the first and second elastic elements. When the movable plate moves toward the air vent, the first elastic element can apply a force to the movable plate in the opposite direction of the movement. When the movable plate moves away from the air vent, the second elastic element can apply a force to the movable plate in the opposite direction of the movement.

[0014] By adopting the above technical solution, in order to accelerate the reduction of indoor gas concentration, the blowing and suction actions need to be alternated during use to avoid situations where suction or blowing alone cannot meet the requirements for reducing gas concentration in a closed indoor space. By setting a first elastic element and a second elastic element, the movable plate can be kept closed at the air vent. When suction is applied, under the action of negative pressure in the duct, the movable plate will move inward towards the air vent, thereby compressing the first elastic element until the air vent is opened and the movable plate is in a balanced position. At this time, indoor air can be drawn into the duct. When the fan stops moving, under the action of the first elastic element, the movable plate will move back to the initial position and close the air vent. When blowing, the air pressure inside the duct is greater than the external pressure, and the movable plate will be pushed away from the air vent, thereby compressing the second elastic element until the air vent is opened and the movable plate is in a balanced position. At this time, outdoor air will be blown into the room. When the fan stops moving, under the action of the second elastic element, the movable plate will move back to the initial position and close the air vent.

[0015] Preferably, a duct is provided at the air outlet, and the movable plate slides in conjunction with the duct.

[0016] By adopting the above technical solution, the duct makes it easier for the movable plate to close the air vent. At the same time, the movable plate can also close the air vent when it slides within a certain range. After long-term use, when the first elastic element and the second elastic element undergo plastic deformation, the movable plate can still close the air vent, thereby improving the service life of the equipment and preventing the air vent from being opened accidentally.

[0017] Preferably, a flexible baffle is provided around the movable plate, the flexible baffle being used to fit against the conduit and seal between the conduit and the movable plate.

[0018] By adopting the above technical solution, the sealing performance between the movable plate and the duct is increased by the flexible baffle, which improves the sealing effect of the air outlet. At the same time, when the sealing performance between the movable plate and the duct is better, the negative pressure effect generated on both sides of the movable plate is more obvious, and the air outlet is easier to open.

[0019] Preferably, the normally closed structure includes: A first hinge plate is hinged at the air outlet. A third elastic element is provided between the first hinge plate and the air duct. The third elastic element is used to ensure that the first hinge plate always has a tendency to close. The second hinge plate is hinged to the air vent. A fourth elastic element is provided between the second hinge plate and the air duct. The fourth elastic element is used to ensure that the second hinge plate always has a tendency to close. The air vent is closed by the first hinge plate and the second hinge plate. When the air vent is drawing in air, the first hinge plate opens under the action of the air, and the second hinge plate remains in place. When the air vent is blowing air, the second hinge plate opens under the action of the air, and the first hinge plate remains in place.

[0020] By adopting the above technical solution, during use, the alternating opening of the first and second hinge plates can achieve the effects of blowing and sucking air from the vent, improving the efficiency of reducing the gas concentration. When the fan stops, both the first and second hinge plates are in a closed state, and the vent is sealed. When the fan sucks air, the first hinge plate will open under the action of negative pressure, while the second hinge plate remains stationary. At this time, the third elastic element will store energy, causing indoor air to move to the outside. When the fan stops, the third elastic element will release elastic potential energy, causing the first hinge plate to close the vent. Similarly, when the fan blows air, the second hinge plate will open, while the first hinge plate remains stationary, allowing outdoor air to enter the room, thereby diluting the gas concentration. When the fan stops, the second hinge plate will return to its original position under the action of the fourth elastic element, closing the vent.

[0021] Preferably, an air duct is provided at the air outlet, and the first hinge plate and the second hinge plate are located inside the air duct. When the air outlet draws in air, the first hinge plate rotates inward to open; when the air outlet blows air, the second hinge plate rotates outward to open. An air guide plate is provided inside the air duct, and the air guide plate is used to guide the air entering the air outlet toward the side of the second hinge plate toward the inside of the air outlet.

[0022] By adopting the above technical solution, the air entering the air vent can be guided towards the air vent side of the second hinge plate through the air guide plate, thereby carrying away dust and other particles on the second hinge plate and preventing dust on the second hinge plate from being blown out into the room when the second hinge plate is opened during the blowing process.

[0023] Preferably, a flexible membrane is provided on the side of the second hinge plate facing the air vent, and a sealed space is formed between the flexible membrane and the second hinge plate. The sealed space is filled with gas, and the volume of the gas is 1 / 2 of the volume of the sealed space.

[0024] By adopting the above technical solution, by setting a flexible membrane on the inner side of the second hinge plate facing the air outlet, dust can fall onto the flexible membrane. When the air is guided to the flexible membrane by the air guide plate, it can cause the flexible membrane to fluctuate and shake, making it easier for the dust on the flexible membrane to be carried away by the air, so as to prevent the dust on the second hinge plate from being blown into the room when blowing air into the room later.

[0025] In summary, the present invention has at least one of the following beneficial technical effects: 1. During use, the forced ventilation system can exhaust indoor air to the outside after an abnormal gas concentration signal is detected, thereby reducing the indoor gas concentration and thus reducing safety risks; 2. It can quickly reduce the concentration of gas in a sealed room by alternating between suction and blowing. 3. During the blowing process, it can prevent dust on the second hinge plate from being blown into the room. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of Embodiment 1 of this application.

[0027] Figure 2 This is a schematic diagram of the exhaust device in Embodiment 1.

[0028] Figure 3 This is a schematic diagram of the exhaust device in Embodiment 2.

[0029] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle.

[0030] In the diagram, 1. Detection system; 2. Alarm system; 3. Alarm module; 4. Forced ventilation system; 41. Forced ventilation device; 41a. Fan; 41b. Air duct; 41c. Air outlet; 42. Forced ventilation control system; 5. Normally closed structure; 51. Movable plate; 52. First elastic element; 53. Second elastic element; 54. Flexible baffle; 55. First hinge plate; 56. Second hinge plate; 57. Third elastic element; 58. Fourth elastic element; 59. Air duct; 510. Air guide plate; 511. Flexible membrane; 512. Sealed space; 6. Conduit; 7. Extension rod; 8. First opening; 9. Second opening. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the accompanying drawings.

[0032] Example 1: Reference Figure 1 , 2This invention discloses a gas-fired forced ventilation linkage system, comprising a detection system 1, an alarm system 2, an alarm module 3, and a forced ventilation system 4. The detection system 1 detects the gas concentration and outputs a gas concentration signal. In this embodiment, the detection system 1 includes a gas concentration detection probe, which is installed indoors with gas pipelines and gas equipment to monitor the gas concentration in real time. The alarm system 2 receives the gas concentration signal and determines whether the gas concentration signal is abnormal. Typically, it is set to indicate an abnormality when the gas concentration exceeds 20%. When the alarm system 2 detects an abnormal gas concentration signal, it outputs a gas concentration abnormality signal. The alarm module 3 and the forced ventilation system 4 receive the gas concentration abnormality signal and respond accordingly. Upon receiving the gas concentration abnormality signal, the alarm module 3 can sound an alarm, which is not limited to sound or light alarms but can also push alarm information to the user's mobile device via wireless transmission. The forced ventilation system 4 replaces the indoor air to exhaust the gas-containing air outdoors, reducing indoor safety risks.

[0033] The forced ventilation system 4 includes a forced ventilation control system 42 and a forced ventilation device 41. The forced ventilation control system 42 has two modes: a first mode and a second mode. In the first mode, the forced ventilation control system 42 controls the forced ventilation device 41 to start upon receiving an abnormal gas concentration signal. In the second mode, the forced ventilation control system 42 controls the forced ventilation device 41 to start. In this embodiment, the first mode is an automatic mode, which can promptly respond to abnormal gas concentration signals and drive the forced ventilation device 41 to work. The second mode is a manual mode, which allows manual activation of the forced ventilation device 41 to check whether the forced ventilation device 41 and related pipelines are working properly, avoiding the inconvenience of regular maintenance and repair after assembly. Each inspection and maintenance of the forced ventilation system 4 requires testing by venting gas. Some users cannot test whether the fan 41a is functioning properly before gas is supplied. The second mode solves this problem.

[0034] When the indoor gas concentration is reduced by the forced ventilation system 4, there may be situations where the indoor environment is sealed and the gas concentration cannot be effectively reduced, which poses a significant safety hazard. Therefore, special reminders are needed for this situation. When the forced ventilation control system 42 is in the first mode, after the forced ventilation device 41 is turned on, the alarm system 2 determines whether the gas concentration signal continues to rise within a specified time. If so, it outputs a gas concentration abnormal rise signal. The alarm module 3 receives the gas concentration abnormal rise signal and issues an alarm. By providing special reminders for special situations, the safety hazards under special faults can be greatly reduced.

[0035] Meanwhile, when the gas stove ignition device malfunctions, it may fail to ignite. During frequent ignition, gas may be discharged in a concentrated manner without being burned. In this case, the system may make a misjudgment, causing the alarm module 3 to alarm. Therefore, the alarm system 2 determines whether the gas concentration is abnormal within a specified time. If so, it outputs a gas concentration abnormality signal to improve the accuracy of the system's judgment of gas leaks.

[0036] Reference Figure 1 , 2 The forced ventilation system 41 includes a fan 41a and a duct 41b. The fan 41a is used to blow air into the duct 41b or to draw air in, while the duct 41b is used to guide the air generated by the fan 41a to the room where air needs to be replaced. An air vent 41c is provided on the duct 41b, through which indoor air is exhausted to the outside, and outdoor air can also enter the room through the air vent 41c. Since the duct 41b is usually located on the ceiling, dust accumulation or rodent and insect intrusion can easily occur, which can easily lead to malfunction of the fan 41a. Therefore, a normally closed structure 5 is provided at the air vent 41c, which can close the air vent 41c when the forced ventilation system 41 is not working.

[0037] A duct 6 is installed at the air outlet 41c. In this embodiment, the axis of the duct 6 forms a 90-degree angle with the axis of the air duct 41b. In actual use, the opening of the duct 6 can be vertically downward. The normally closed structure 5 includes a movable plate 51 that is slidably disposed inside the duct 6. The movable plate 51 is in clearance fit with the inner wall of the duct 6. Flexible baffles 54 are provided around the movable plate 51. In this embodiment, the flexible baffles 54 are made of fire-resistant rubber. The flexible baffles 54 can seal the gap between the movable plate 51 and the duct 6, thereby improving the sealing effect of the movable plate 51 on the air outlet 41c.

[0038] Reference Figure 1 , 2 In order to open the air vent 41c during blowing and suction, a first elastic element 52 and a second elastic element 53 are provided between the movable plate 51 and the duct 6. In this embodiment, the first elastic element 52 and the second elastic element 53 are helical springs, such as... Figure 2 As shown, an extension rod 7 is connected to the movable plate 51. The first elastic element 52 is located between the left end of the extension rod 7 and the air duct 41b, and the second elastic element 53 is located between the right end of the extension rod 7 and the duct 6. The left end of the first elastic element 52 is connected to the air duct 41b, while the right end of the first elastic element 52 abuts against the extension rod 7. The right end of the second elastic element 53 is connected to the duct 6, and the left end of the second elastic element 53 abuts against the extension rod 7. That is, neither the first elastic element 52 nor the second elastic element 53 is fixedly connected to the extension rod 7.

[0039] When fan 41a draws air in, negative pressure is generated inside duct 41b. Under the action of external atmospheric pressure, this pressure pushes movable plate 51 to slide to the left. At this time, extension rod 7 compresses the first elastic element 52 until movable plate 51 moves into duct 41b, opening vent 41c. When fan 41a stops, movable plate 51 slides to the right under the push of the first elastic element 52 until vent 41c is sealed. When fan 41a blows air, the pressure inside duct 41b is greater than the external atmospheric pressure. Movable plate 51 is pushed to the right, and extension rod 7 compresses the second elastic element 53 until movable plate 51 moves outside duct 6, opening vent 41c and allowing air from duct 41b to enter the room. When fan 41a stops, movable plate 51 moves to the left under the action of the second elastic element 53 until it returns to its original position. In practical use, slide rails or similar devices can be added to guide the sliding of the movable plate 51 and prevent it from shifting during the sliding process.

[0040] Example 2: Reference Figure 3 , 4 A gas-fired forced exhaust system differs from Embodiment 1 in that the normally closed structure 5 includes a first hinge plate 55 and a second hinge plate 56. A duct 59 is provided at the air outlet 41c. The duct 59 has a first opening 8 and a second opening 9 on the side away from the air outlet 41b. The first hinge plate 55 is hinged to and seals the first opening 8, and the second hinge plate 56 is hinged to and seals the second opening 9. The first hinge plate 55 is hinged to the side of the first opening 8 facing the air outlet 41c, and the second hinge plate 56 is hinged to the side of the second opening 9 away from the air outlet 41c. On the side; a third elastic element 57 is provided at the hinge axis of the first hinge plate 55, and a fourth elastic element 58 is provided at the hinge axis of the second hinge plate 56. In this embodiment, both the third elastic element 57 and the fourth elastic element 58 are torsion springs. The third elastic element 57 is used to make the lower end of the first hinge plate 55 always have a tendency to rotate to the right, that is, to make the first hinge plate 55 always have a tendency to seal the first opening 8. The fourth elastic element 58 is used to make the upper end of the second hinge plate 56 always have a tendency to rotate to the left, that is, to make the second hinge plate 56 always have a tendency to seal the second opening 9.

[0041] Reference Figure 3 , 4 When the fan 41a draws in air, the first hinge plate 55 rotates to the left and opens under the action of the air, while the second hinge plate 56 remains stationary, allowing indoor air to be discharged through the first opening 8; when the fan 41a blows air, the second hinge plate 56 rotates to the right and opens under the action of the air, while the first hinge plate 55 remains stationary, allowing outdoor air to enter through the second opening 9.

[0042] In use, the first hinge plate 55 and the second hinge plate 56 are usually installed horizontally. In this case, dust easily accumulates on the inner side of the first hinge plate 55 and the second hinge plate within the air duct 59. This dust is easily discharged into the room when the fan 41a blows air, causing a decline in indoor air quality. Therefore, an air guide plate 510 is installed inside the air duct 59. One end of the air guide plate 510 is connected to the inner wall of the air duct 59, and the other end is located on the side of the second hinge plate 56. The air duct 59 is tilted towards the side of the second hinge plate 56, forming a small opening between the air guide plate 510 and the second hinge plate 56. When air is drawn in, outside air enters the air duct 59 and, under the action of the air guide plate 510, passes through this small opening. This increases the airflow speed, thereby carrying away the dust inside the second hinge plate 56. To further reduce the dust blown into the room, a flexible membrane 511 is provided on the left side of the second hinge plate 56. A sealed space 512 is formed between the flexible membrane 511 and the second hinge plate 56. The sealed space 512 is filled with gas, and the volume of the gas is 1 / 2 of the volume of the sealed space 512. In this embodiment, the gas is air. Thus, when the wind blows across the left side of the second hinge plate 56, the wind will cause the flexible membrane 511 to shake, thereby carrying away as much dust as possible from the flexible membrane 511, reducing dust accumulation. When switching to airflow later, this can reduce the dust blown into the room. In this embodiment, the flexible membrane 511 is an elastic plastic membrane.

[0043] During operation, the gas concentration is detected by the detection system 1. When the gas concentration exceeds the standard, the indoor air needs to be replaced by the forced ventilation device 41. During replacement, the air is first drawn from the room. If the concentration decreases slowly during the extraction, it indicates that the room is well sealed. At this time, it is necessary to switch to blowing air into the room to increase the indoor air pressure. Then, the air is extracted again. In this way, the air in the sealed room can be replaced, thereby reducing the gas concentration and reducing safety hazards.

[0044] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A gas-fired forced exhaust ventilation linkage system, characterized in that, include: The detection system (1) is used to detect the gas concentration and output the gas concentration signal; Alarm system (2) is used to receive gas concentration signal, determine whether the gas concentration signal is abnormal, and output gas concentration abnormal signal if so. Alarm module (3) is used to receive abnormal gas concentration signals and trigger an alarm; Forced ventilation system (4), the forced ventilation system (4) includes a forced ventilation device (41) and a forced ventilation control system (42), the forced ventilation control system (42) is used to receive abnormal gas concentration signals, the forced ventilation control system (42) includes a first mode and a second mode; when the forced ventilation control system (42) is in the first mode, it is used to control the forced ventilation device (41) to start after receiving an abnormal gas concentration signal; When the forced ventilation control system (42) is in the second mode, it controls the forced ventilation device (41) to turn on; The forced exhaust device (41) includes: Fan (41a), used for blowing / suction; The duct (41b) is connected to the fan (41a), and the duct (41b) has an air outlet (41c), which is provided with a normally closed structure (5). The normally closed structure (5) includes: A first hinge plate (55) is hinged to the air outlet (41c). A third elastic element (57) is provided between the first hinge plate (55) and the air duct (41b). The third elastic element (57) is used to make the first hinge plate (55) always have a tendency to close. A second hinge plate (56) is hinged to the air outlet (41c). A fourth elastic element (58) is provided between the second hinge plate (56) and the air duct (41b). The fourth elastic element (58) is used to ensure that the second hinge plate (56) always has a tendency to close. The air outlet (41c) is closed by the first hinge plate (55) and the second hinge plate (56). When the air outlet (41c) draws in air, the first hinge plate (55) opens under the action of the air, and the second hinge plate (56) remains in place. When the air outlet (41c) blows air, the second hinge plate (56) opens under the action of the air, and the first hinge plate (55) remains in place. An air guide duct (59) is provided at the air outlet (41c). The first hinge plate (55) and the second hinge plate (56) are located inside the air guide duct (59). When the air outlet (41c) draws in air, the first hinge plate (55) rotates and opens to the inside of the air outlet (41c). When the air outlet (41c) blows air, the second hinge plate (56) rotates and opens to the outside of the air outlet (41c). An air guide plate (510) is provided inside the air guide duct (59). The air guide plate (510) is used to guide the air entering the air outlet (41c) towards the side of the second hinge plate (56) towards the inside of the air outlet (41c). The second hinge plate (56) has a flexible membrane (511) on the side facing the air vent (41c). A sealed space (512) is formed between the flexible membrane (511) and the second hinge plate (56), and the sealed space (512) is filled with gas.

2. The gas-fired forced exhaust ventilation linkage system according to claim 1, characterized in that, When the forced ventilation control system (42) is in the first mode, after the forced ventilation device (41) is turned on, the alarm system (2) determines whether the gas concentration signal continues to rise within a specified time. If so, it outputs a gas concentration abnormal rise signal. The alarm module (3) receives a signal of abnormal rise in gas concentration and issues an alarm.

3. The gas-fired forced exhaust ventilation linkage system according to claim 1, characterized in that, The alarm system (2) determines whether the gas concentration is abnormal within a specified time. If so, it outputs a gas concentration abnormality signal.

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