A range hood with a combustible gas alarm function

Abstract

A kind of range hood with combustible gas alarm function, the front end of the range hood body is also covered with panel, the panel is provided with detection window, the back of the detection window is connected and installed with protective sleeve, the gas laser detector is installed in the protective sleeve, and the detection port of the gas laser detector is installed obliquely upwards behind the detection window.The beneficial effects of the utility model are that the gas laser detector is ingeniously integrated into the range hood body to form a integrated household appliance, which effectively solves the problems of additional design installation position, power line layout and influence on home appearance of the independent gas detector in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, specifically a range hood with a combustible gas alarm function. Background Technology

[0002] With the rapid development of society and economy and the optimization of energy structure, combustible gases, such as natural gas and liquefied petroleum gas, have gradually become an indispensable clean energy source in people's daily lives due to their advantages such as high efficiency, cleanliness, and ease of use. Gas is not only widely used in urban residents' cooking and heating, but also plays an important role in industrial production, greatly facilitating people's production and lives.

[0003] However, while enjoying the convenience brought by combustible gases, their inherent safety hazards are becoming increasingly prominent. Combustible gases are colorless and odorless, and once a leak occurs, they can easily accumulate in confined spaces. Once they reach their explosive limits, they can ignite upon contact with open flames or static electricity, potentially causing fires or even explosions, posing a significant threat to personal safety and property. Therefore, installing gas detectors in homes or related locations to monitor combustible gas concentrations in real time and issue timely alarms is particularly necessary and important for effectively preventing and reducing gas leak accidents.

[0004] Most household combustible gas detectors currently on the market are standalone, independent components. These detectors typically require users to select and design appropriate installation locations in the kitchen or gas-using area based on their needs. In actual installation, users often need to install additional power lines or use battery power, which not only increases the difficulty, time, and cost of installation, but also makes the exposed power lines or the detector itself look unsightly and out of place, affecting the overall home décor.

[0005] Furthermore, it's worth noting that common household combustible gases, such as methane (the main component of natural gas), are generally less dense than air. This means that in the event of a small leak, these gases will not sink but will float upwards and gradually accumulate in the upper part of the space or in corners. However, existing household combustible gas detectors typically have their detection ports (or sensing elements) designed on the bottom or front of the detector body, and most users are accustomed to installing them in the lower middle part of the wall, resulting in a low actual detection height. This design and installation method makes it difficult for the detector to detect the gas concentration and issue an alarm promptly and effectively when the gas has just begun to leak and spread upwards. This detection lag may delay the optimal alarm and response time, thus greatly increasing the risk of gas leak accidents and failing to provide the most timely and effective safety guarantee. Therefore, further improvements are necessary. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a range hood with a combustible gas alarm function that is more integrated, easier to install, better integrated with the existing home environment, and more effective in detecting combustible gases floating and spreading upwards.

[0007] The purpose of this utility model is achieved through the following means: a range hood with a combustible gas alarm function, wherein the front end of the range hood body is covered with a panel, the panel has a detection window, a protective sleeve is installed on the back of the detection window, a gas laser detector is installed inside the protective sleeve, and the detection port of the gas laser detector is installed at an upward angle behind the detection window.

[0008] Furthermore, the detection port is tilted at 30°-45° to the panel.

[0009] Furthermore: the protective cover includes a mounting base and a mounting shell. The mounting base is fixed to the back of the panel. The mounting base is provided with a mounting port that communicates with the detection window. The interior of the protective cover is hollow and has a mounting area for installing a gas laser detector.

[0010] Furthermore, the mounting housing has an opening on its side wall, through which the gas laser detector is installed into the mounting area.

[0011] Furthermore, a sealing cap is installed over the opening, and the sealing cap is provided with a threading hole.

[0012] Furthermore, the mounting base is fixed to the back of the panel by adhesive.

[0013] Furthermore, the gas laser detector is connected to the main control circuit and the audible and visual alarm inside the range hood.

[0014] The beneficial effects of this utility model are: 1. Simple structure, low production cost, and improved market competitiveness.

[0015] 2. This utility model cleverly integrates a gas laser detector into the range hood body, forming a unified household appliance. This effectively solves the problems of existing independent gas detectors requiring additional design of installation locations, power line laying, and impacting home aesthetics. Users do not need to perform additional installation and wiring work, eliminating the hassle of separate power sockets or battery replacements, achieving plug-and-play or simple installation. The device blends seamlessly into the home environment (especially the kitchen), with a simple, elegant, and aesthetically pleasing appearance, significantly improving the user experience and ease of installation.

[0016] 3. The gas laser detector used in this invention utilizes advanced laser interferometry technology. Compared to traditional semiconductor or catalytic combustion sensors, it boasts significantly higher measurement accuracy, superior stability, and a longer service life. It can accurately monitor the concentration of combustible gases such as methane, especially at extremely low methane concentrations. This means the device can quickly and accurately detect minute gas leaks, providing users with earlier warnings, effectively preventing accidents, and greatly improving household gas safety.

[0017] 4. Addressing the characteristic of existing technologies where combustible gases (such as methane, the main component of natural gas) are lighter than air and float and diffuse upwards after a leak, this invention innovatively tilts the detection port of the gas laser detector upwards. This structure allows the detector to more efficiently capture combustible gases diffusing upwards in the early stages of a leak. Compared to traditional detectors placed low or horizontally, this invention can detect leak signals earlier and faster when the gas concentration reaches the warning threshold, significantly shortening the detection response time and providing users with valuable emergency response time, further improving the efficiency and timeliness of safety warnings. Attached Figure Description

[0018] Figure 1 This is a diagram showing the final assembly and usage effect of this utility model.

[0019] Figure 2 In this utility model Figure 1 Enlarged view of the structure of part A.

[0020] Figure 3 This is a partial structural diagram of the concealed range hood body of this utility model.

[0021] Figure 4 , 5 This is a schematic diagram of the protective sleeve structure in this utility model.

[0022] Figure 6 This is an exploded view of the protective sleeve structure in this utility model.

[0023] Explanation of reference numerals in the attached figures: 1. Range hood body; 4. Panel; 41. Detection window; 5. Protective cover; 51. Mounting base; 52. Mounting shell; 53. Mounting port; 54. Installation area; 55. Opening; 56. Sealing cover; 57. Wiring hole; 6. Gas laser detector; 61. Detection port. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings. A range hood with a combustible gas alarm function is provided, wherein the front end of the range hood body 1 is covered with a panel 4, the panel 4 has a detection window 41, a protective sleeve 5 is installed on the back of the detection window 41, a gas laser detector 6 is installed inside the protective sleeve 5, and the detection port 61 of the gas laser detector 6 is installed upwardly at the rear of the detection window 41.

[0025] In this embodiment: the range hood body 1 serves as the carrier of the entire device. The front-mounted panel 4 is not only part of the range hood's appearance but also integrates a crucial detection window 41. The detection window 41 acts as an optical window, allowing external gas to enter the detection area while also providing some protection. A protective sleeve 5 tightly connected to the back of the detection window 41 forms a sealed or semi-sealed cavity for safely and stably housing and fixing the gas laser detector 6. The gas laser detector 6 is the core sensing element of this system. It utilizes advanced laser interferometry technology to continuously monitor the gas composition in the external environment through the detection port 61. Its detection port 61 is designed to be installed at an upward angle behind the detection window 41, meaning that the detector's sensitive area faces the space above and in front of the range hood.

[0026] By cleverly integrating the gas detection function into the range hood panel, a unity of function and aesthetics is achieved, avoiding the cumbersome wiring and inconsistent appearance problems caused by existing independent detectors, making the overall device cleaner and more beautiful.

[0027] Meanwhile, considering that common combustible gases such as natural gas have a lower density than air and will diffuse upwards after a leak, the "upward tilting installation" design of the detection port 61 enables the detector to capture rising combustible gases earlier and more effectively, greatly improving the early leak detection efficiency and early warning response speed, thereby giving users more valuable processing time and improving safety.

[0028] In addition, the combination of the measuring window and the protective cover 5 provides a relatively clean and stable working environment for the gas laser detector 6, reducing the interference of oil fumes, dust and other factors on the detection element, while ensuring that the detection port 61 can effectively contact the external gas for detection.

[0029] In one embodiment, the probe port 61 is set at an angle of 30°-45° to the panel.

[0030] In this embodiment, by forming a specific tilt angle of 30°-45° between the detection port 61 and the panel 4, it is ensured that the sensitive area of ​​the detector is optimally pointed in the direction in which combustible gas would typically accumulate after a leak. This angle is an optimized range derived through experimental or theoretical analysis, designed to maximize the detector's capture efficiency of combustible gas in the space above and in front. When gas leaks from the stove area and diffuses upwards along the range hood, this tilt angle allows the detector's optical path to pass through the area with the highest gas concentration or the area that first reaches the alarm threshold.

[0031] It should be noted that the tilt angle of 30°-45° provides a precise response to the gas diffusion pattern. This allows the detector to detect along the path where flammable gas is most likely to leak and float upwards, thus significantly improving the sensitivity and timeliness of gas detection and avoiding delayed alarms caused by poor detection location.

[0032] In one embodiment: the protective cover 5 includes a mounting base 51 and a mounting shell 52. The mounting base 51 is fixed to the back of the panel 4. The mounting base 51 is provided with a mounting port 53 that communicates with the detection window 41. The protective cover 5 is hollow inside and has a mounting area 54 for mounting a gas laser detector 6.

[0033] In this embodiment: the mounting base 51 is the basic part connecting the protective sleeve and the range hood panel. By fixing it to the back of the panel 4, it provides stable support for the entire detection module. The mounting port 53 on the mounting base 51 is connected to the detection window 41, forming a channel for gas to enter the interior of the protective sleeve. The interior of the protective sleeve 5 is specially designed with a hollow mounting area 54. This area provides precise positioning and housing space for the gas laser detector 6, ensuring that the detector can be installed at a preset tilt angle, and that its detection port 61 can accurately face the mounting port 53 and the detection window 41.

[0034] The combined design of the mounting base 51 and the mounting housing 52 provides a robust and precise mounting structure for the gas laser detector 6, ensuring that the detector remains stable under vibration or other external factors during the operation of the range hood, without affecting the detection accuracy.

[0035] Meanwhile, the protective sleeve 5 isolates the detector from other components inside the range hood, such as the motor and circuitry, effectively preventing contamination and damage to the precision detection elements from fumes, dust, and moisture, thus extending the detector's lifespan. Furthermore, this split-type design of the mounting base and housing facilitates future maintenance and upgrades, allowing the detection module to be installed or replaced as an independent unit.

[0036] In one embodiment: the side wall of the mounting housing 52 has an opening 55, and the gas laser detector 6 is installed into the mounting area 54 through the opening 55.

[0037] An opening 55 is provided on the side wall of the mounting shell 52 of the protective cover, which is an openable channel. During assembly, the gas laser detector 6 can be easily inserted and placed into the mounting area 54 through this opening 55. This design avoids the complicated operation of disassembling the entire panel or protective cover when installing the detector.

[0038] Meanwhile, the opening 55 greatly simplifies the installation process of the gas laser detector 6, and makes future maintenance, replacement or troubleshooting faster and more convenient, without the need for large-scale disassembly of the range hood, thus reducing maintenance costs and time.

[0039] In one embodiment: a sealing cover 56 is installed over the opening 55, and the sealing cover 56 is provided with a threading hole 57.

[0040] In this embodiment: After the gas laser detector 6 is installed, the opening 55 is tightly covered and installed by a sealing cover 56. The function of this sealing cover 56 is to ensure the airtightness of the protective sleeve 5, preventing external contaminants such as oil fumes, water vapor, and dust from entering through the opening 55, thereby protecting the working environment of the precision detector. At the same time, a wire hole 57 is specially provided on the sealing cover 56 for the data cable or power cable of the gas laser detector 6 to be connected to the external circuit to pass through, ensuring the cleanliness and protection of the wiring and maintaining the airtightness.

[0041] Among them, the sealing cover 56 effectively prevents external environmental factors from corroding the gas laser detector 6, especially in environments with a lot of oil fumes and moisture, such as range hoods, which can significantly extend the life of the detector and improve its working stability.

[0042] In one embodiment, the mounting base 51 is secured to the back of the panel 4 using an adhesive. By using the adhesive, the mounting base 51 can be firmly and easily fixed to the back of the panel 4. After curing, the adhesive forms a strong bond, ensuring the overall stability of the detection module.

[0043] Meanwhile, using adhesives for fixing is a simple and quick connection method that eliminates the need for additional fasteners such as screws and rivets, simplifying the assembly process and improving production efficiency.

[0044] In addition to providing a fixing function, adhesives often also act as a sealant, further preventing external impurities from entering. Furthermore, some adhesives have shock-absorbing properties, which can reduce the impact of vibrations generated by the range hood during operation on the detector.

[0045] In one embodiment, the gas laser detector 6 is connected to the main control circuit and the audible and visual alarm inside the range hood body 1.

[0046] The gas concentration data collected by the gas laser detector 6 is transmitted to the main control circuit inside the range hood body 1 via an electrical signal. The main control circuit is the "brain" of the entire system, responsible for receiving and processing the data from the detector. When the main control circuit determines that the gas concentration has reached the preset alarm threshold, it immediately triggers the connected audible and visual alarm. The audible and visual alarm then promptly and intuitively warns the user of the danger by emitting a high-decibel alarm sound and flashing warning lights.

[0047] Therefore, this connection realizes a complete functional chain of detection, data processing, judgment and alarm, deeply integrating gas detection function into the range hood system to form an automated and intelligent safety protection system.

[0048] In summary, the core working principle of this utility model of a range hood with combustible gas alarm function is to achieve real-time monitoring and timely early warning of combustible gas leaks in the kitchen environment through an integrated, high-precision gas laser detector with optimized detection angle.

[0049] Specifically, when the user turns on the range hood or it is in standby mode, the internal gas laser detector 6 begins to operate. This detector employs advanced laser interferometry technology, continuously emitting and receiving laser beams through its upward-tilted detection port 61 into the space behind the detection window 41 on the range hood panel. This allows for real-time, high-precision sampling and measurement of the concentration of combustible gases, such as methane, in the air passing through this area. Because the detection port 61 is tilted at 30°-45° to the panel, this design fully considers the physical characteristics of lighter-than-air combustible gases, such as natural gas, which tend to float and diffuse upwards and forwards after a leak. This enables the detector to preferentially and more efficiently capture these early leaks, significantly improving the timeliness and sensitivity of the detection.

[0050] The protective sleeve 5 consists of a mounting base 51 and a mounting shell 52. The mounting base 51 is firmly fixed to the back of the panel 4 with adhesive and has a mounting opening 53 that communicates with the detection window 41. The mounting area 54 inside the protective sleeve provides a precise fixed position and safe housing space for the gas laser detector 6. This structure not only ensures the working stability of the detector, but more importantly, it provides a protective environment that isolates the precision optical detection element from external oil fumes, dust, and moisture, significantly extending the service life of the detector. When it is necessary to install or maintain the detector, the detector can be easily inserted or removed through the opening 55 on the side wall of the mounting shell 52. After installation, the sealing cover 56 covers the opening 55 and guides the detector's connecting wire through the wire hole 57, ensuring overall sealing and aesthetics.

[0051] The gas concentration data monitored in real time by the gas laser detector 6 is transmitted via cable to the main control circuit inside the range hood body 1. As the intelligent core of the system, the main control circuit analyzes and judges the received data. Once the detected combustible gas concentration reaches the preset safety threshold, the main control circuit immediately activates the audible and visual alarm. At this time, the audible and visual alarm will emit a loud alarm sound and flashing warning lights, reminding the user of the risk of gas leakage in the most intuitive and conspicuous way.

[0052] In summary, this invention cleverly integrates advanced gas laser detection technology with a range hood and optimizes the detector's installation position and angle, forming a highly integrated, sensitive, rapid-response, convenient-to-install, and easy-to-maintain intelligent safety protection system. It not only solves the aesthetic and installation inconvenience problems of existing independent detectors, but more importantly, it can detect combustible gas leaks with higher efficiency and faster speed, providing strong protection for users' lives and property. Therefore, it can be widely promoted and used.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A range hood with a combustible gas alarm function, characterized in that: The front end of the range hood body (1) is also covered with a panel (4), and a detection window (41) is provided on the panel (4). A protective sleeve (5) is installed on the back of the detection window (41), and a gas laser detector (6) is installed inside the protective sleeve (5). The detection port (61) of the gas laser detector (6) is installed at an upward angle behind the detection window (41).

2. A range hood with a combustible gas alarm function according to claim 1, characterized in that: The probe port (61) is tilted at 30°-45° to the panel (4).

3. A range hood with a combustible gas alarm function according to claim 1, characterized in that: The protective cover (5) includes a mounting base (51) and a mounting shell (52). The mounting base (51) is fixed to the back of the panel (4). The mounting base (51) is provided with a mounting port (53) that communicates with the detection window (41). The protective cover (5) is hollow inside and has a mounting area (54) for installing a gas laser detector (6).

4. A range hood with a combustible gas alarm function according to claim 3, characterized in that: The mounting housing (52) has an opening (55) on its side wall, and the gas laser detector (6) is installed into the mounting area (54) through the opening (55).

5. A range hood with a combustible gas alarm function according to claim 4, characterized in that: A sealing cap (56) is installed on the opening (55), and a threading hole (57) is provided on the sealing cap (56).

6. A range hood with a combustible gas alarm function according to claim 3, characterized in that: The mounting base (51) is fixed to the back of the panel (4) by adhesive.

7. A range hood with a combustible gas alarm function according to claim 1, characterized in that: The gas laser detector (6) is connected to the main control circuit and the sound and light alarm inside the range hood body (1).

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