A combustible gas leak alarm

Abstract

The utility model discloses a combustible gas leak alarm in the field of combustible gas leak alarm, comprising an alarm housing, an air inlet being arranged on the alarm housing, a Tesla valve structure being arranged around the alarm housing, and the Tesla valve structure being connected to the air inlet so that gas can quickly enter the alarm housing. The utility model solves the problem of alarm response delay caused by the inability to quickly contact gas of sufficient concentration in an insufficiently ventilated or confined space in the existing combustible gas leak alarm. Even in a poorly ventilated environment, the Tesla valve structure of the utility model can enable the gas to obtain acceleration when flowing, and the gas can quickly enter the alarm housing through the air inlet, which helps to shorten the contact time between the gas and the sensor, thereby reducing the alarm response delay caused by the slow diffusion speed of the gas.

Description

Technical Field

[0001] The utility model relates to the technical field of combustible gas leakage alarm, in particular to a combustible gas leakage alarm. Background Art

[0002] The combustible gas leak alarm is a device specially designed to monitor the safety of combustible gases. It detects combustible gases in the surrounding environment through integrated gas sensors. These gases include but are not limited to natural gas and liquefied petroleum gas. Once the gas leak is detected and its concentration reaches the preset safety threshold, the combustible gas leak alarm will be activated immediately, and people will be quickly reminded to take necessary safety measures by emitting a high-volume alarm or flashing warning lights.

[0003] In order to ensure that the combustible gas leak alarm can operate efficiently and accurately, it is recommended to install it in a well-ventilated area, such as a kitchen vent or near a window, which is conducive to the rapid diffusion of gas, thereby ensuring that the sensor can quickly detect the leaking combustible gas and reduce the possibility of danger. However, if the combustible gas leak alarm is installed in a poorly ventilated environment, the diffusion rate of the leaking combustible gas will slow down, causing the sensor to take longer to detect sufficient gas concentration to trigger the alarm, which not only increases the response time, but may also fail to trigger the alarm at all because the sensor cannot contact the gas of sufficient concentration in time, thereby greatly increasing the safety risk.

[0004] The above defects need to be solved urgently. Utility Model Content

[0005] In order to solve the problem of delayed alarm response caused by the inability of existing combustible gas leakage alarms to quickly contact gas of sufficient concentration in insufficiently ventilated or confined spaces, the utility model provides a combustible gas leakage alarm.

[0006] The technical solution of the utility model is as follows:

[0007] A combustible gas leak alarm comprises an alarm housing, wherein the alarm housing is provided with an air inlet, a Tesla valve structure is arranged around the alarm housing, and the Tesla valve structure is connected with the air inlet so that gas can quickly enter the alarm housing.

[0008] According to the above scheme of the utility model, the Tesla valve structure includes at least two groups of interconnected acceleration air intake units, the acceleration air intake unit having a first air intake part and a second air intake part, the first air intake part and the second air intake part are staggered, and a main air intake duct is formed between the first air intake part and the second air intake part.

[0009] According to the above scheme of the utility model, the first air intake portion includes a first curved air intake plate and a first main air intake plate connected to the first curved air intake plate, and the second air intake portion includes a second curved air intake plate and a second main air intake plate connected to the second curved air intake plate, and the inclination directions of the first main air intake plate and the second main air intake plate are opposite.

[0010] According to the utility model of the above solution, a first air intake block is arranged between the first arc-shaped air intake plate and the second main air intake plate, and a first branch air intake passage is formed between the first air intake block and the first arc-shaped air intake plate;

[0011] A second air intake block is disposed between the second arc-shaped air intake plate and the first main air intake plate, and a second branch air intake passage is formed between the second air intake block and the second arc-shaped air intake plate;

[0012] The first branch air intake passage and the second branch air intake passage are both communicated with the main air intake passage.

[0013] According to the above-mentioned solution of the utility model, there are two Tesla valve structures, and the two Tesla valve structures are centrally symmetrically arranged on both sides of the alarm housing.

[0014] According to the above-mentioned scheme of the utility model, the alarm housing includes an upper housing and a lower housing, the upper housing is provided with a first clamping groove, the lower housing protrudes outward to form a first clamping portion, the first clamping portion is clamped and connected with the first clamping groove, and the Tesla valve structure is arranged in the upper housing.

[0015] The utility model according to the above scheme also includes a circuit board arranged inside the alarm housing, a connecting hole is arranged on the circuit board, the upper housing protrudes outward to form a first connecting column, the lower housing protrudes outward to form a second connecting column, the connecting piece passes through the second connecting column, and the connecting hole cooperates with the first connecting column.

[0016] The utility model according to the above solution further comprises a mounting base, the mounting base is provided with a second clamping portion, the lower shell is provided with a second clamping groove, and the second clamping portion is clamped and connected with the second clamping groove.

[0017] According to the above-mentioned scheme of the utility model, the second clamping groove includes an entry and exit groove and a connecting groove connected to the entry and exit groove, and the groove width of the entry and exit groove is greater than the groove width of the connecting groove, and the second clamping portion passes through the entry and exit groove and is fixedly connected to the connecting groove.

[0018] According to the above-mentioned solution of the utility model, the second clamping part includes a base and a clamping joint connected to the base, and the width of the clamping joint is greater than the width of the base. After passing through the entry and exit groove, the clamping joint is clamped and connected to the connecting groove.

[0019] The utility model according to the above scheme has the following beneficial effects:

[0020] In the above-mentioned combustible gas leak alarm, a Tesla valve structure is arranged around the alarm housing, and the Tesla valve structure is connected to the air inlet, so that even in a poorly ventilated environment, the Tesla valve structure can make the gas gain acceleration when flowing, and the gas can quickly enter the alarm housing through the air inlet, which helps to shorten the time that the gas contacts the sensor, thereby reducing the alarm response delay caused by the slow diffusion rate of the gas. In addition, the Tesla valve structure is arranged around the alarm housing, which helps to reduce the volume of the combustible gas leak alarm. After entering the housing, the gas can quickly contact the sensor, and even a small combustible gas leak can be detected in time, thereby ensuring that the combustible gas leak alarm can sound an alarm at the first time, reminding the user to take necessary safety measures, which helps to improve the detection sensitivity of the alarm. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 This is a disassembled diagram of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the upper shell;

[0024] Figure 4 is a bottom view of the upper shell;

[0025] Figure 5 for Figure 4 Enlarged view of part A.

[0026] In the figure, 1. alarm housing; 11. upper housing; 111. first snap-fitting groove; 112. first connecting column; 12. lower housing; 121. first snap-fitting part; 122. second connecting column; 123. second snap-fitting groove; 1231. inlet and outlet groove; 1232. connecting groove; 2. Tesla valve structure; 211. first air inlet part; 2111. first arc-shaped air inlet plate; 2112. first main air inlet plate; 212. second air inlet part; 2121. second arc-shaped air inlet plate; 2122. second main air inlet plate; 213. main air inlet duct; 214. first air inlet block; 215. first branch air inlet duct; 216. second air inlet block; 217. second branch air inlet duct; 3. circuit board; 31. connecting hole; 4. mounting base; 41. second snap-fitting part; 411. base; 412. snap-fitting joint. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] like Figure 1 As shown, the utility model provides a combustible gas leak alarm, including an alarm housing 1, an air inlet is provided on the alarm housing 1, a Tesla valve structure 2 is arranged around the alarm housing 1, the Tesla valve structure 2 is connected to the air inlet, and an air outlet is provided on the Tesla valve structure 2, after the gas enters from the air inlet, it quickly enters the alarm housing 1 from the air outlet. Even in a poorly ventilated environment, the Tesla valve structure 2 can make the gas gain acceleration when flowing, and the gas can quickly enter the alarm housing 1 through the air inlet, which helps to shorten the contact time between the gas and the sensor, thereby reducing the alarm response delay caused by the slow diffusion speed of the gas.

[0029] like Figure 1 , Figure 2 As shown, in this embodiment, the alarm housing 1 includes an upper housing 11 and a lower housing 12. The upper housing 11 is provided with a first clamping groove 111, and the lower housing 12 protrudes outward to form a first clamping portion 121. The first clamping portion 121 is clamped and connected with the first clamping groove 111, so as to realize the detachable connection between the upper housing 11 and the lower housing 12. In addition, a circuit board 3 is provided inside the alarm housing 1, and a connecting hole 31 is provided on the circuit board 3. The upper housing 11 protrudes outward to form a first connecting column 112, and the lower housing 12 protrudes outward to form a second connecting column 122. The first connecting member passes through the second connecting column 122, and the connecting hole 31 cooperates with the first connecting column 112, so as to set the circuit board 3 inside the alarm housing 1. In addition, a sensor is provided on the circuit board 3 to realize the detection of the concentration of combustible gas.

[0030] like Figure 2 As shown, in this embodiment, a mounting base 4 for connecting with a wall or the like is provided on the lower shell 12, and a connecting hole 31 is provided on the mounting base 4, and the second connecting member is connected to the wall through the connecting hole 31. In addition, a second clamping portion 41 is also provided on the mounting base 4, and a second clamping groove 123 is provided on the lower shell 12, and the second clamping portion 41 is clamped and connected with the second clamping groove 123, thereby realizing a detachable connection between the lower shell 12 and the mounting base 4, which is convenient for the installation and removal of the alarm shell 1. In actual use, the combustible gas leak alarm can be mounted on the ceiling or mounted on the wall. In actual design, the installation position of the combustible gas leak alarm can be designed according to actual needs.

[0031] like Figure 2 As shown, in this embodiment, the second clamping groove 123 includes an inlet and outlet groove 1231 and a connecting groove 1232 connected to the inlet and outlet groove 1231, and the groove width of the inlet and outlet groove 1231 is greater than the groove width of the connecting groove 1232, so that the second clamping portion 41 passes through the inlet and outlet groove 1231 and is clamped and connected to the connecting groove 1232. Specifically, the second clamping portion 41 includes a base 411 and a clamping joint 412 connected to the base 411, and the width of the clamping joint 412 is greater than the width of the base 411, so that the clamping joint 412 passes through the inlet and outlet groove 1231 and is clamped and connected to the connecting groove 1232, so that the second clamping portion 41 is not easy to fall out of the connecting groove 1232, thereby improving the stability of assembly.

[0032] like Figure 3 , Figure 4 As shown, in this embodiment, the Tesla valve structure 2 is arranged in the upper shell 11, and there are two Tesla valve structures 2, and the two Tesla valve structures 2 are arranged on both sides of the alarm shell 1 in a centrally symmetrical manner. The two Tesla valve structures 2 can work together, and when the gas enters from the air inlet on either side, the gas can be accelerated to ensure that the gas can quickly flow to the sensor of the combustible gas leak alarm. In addition, the Tesla valve structure 2 is arranged in a surrounding manner in the alarm shell 1, which helps to reduce the volume of the combustible gas leak alarm. After entering the shell, the gas can quickly contact the sensor, and even a small combustible gas leak can be detected in time, thereby ensuring that the combustible gas leak alarm can sound an alarm at the first time, reminding the user to take necessary safety measures, which helps to improve the detection sensitivity of the alarm.

[0033] like Figures 3 to 5 As shown, in this embodiment, the Tesla valve structure 2 includes at least two groups of interconnected accelerating air intake units, the accelerating air intake units include a first air intake portion 211 and a second air intake portion 212, the first air intake portion 211 and the second air intake portion 212 are staggered, and a main air intake channel 213 is formed between the first air intake portion 211 and the second air intake portion 212. In the flow direction of the airflow, due to the staggered setting between the first air intake portion 211 and the second air intake portion 212, the first air intake portion 211 and the second air intake portion 212 act on the gas together, reducing the flow resistance, improving the efficiency of gas flow, ensuring that the gas can pass smoothly, thereby increasing the speed at which the gas enters the alarm housing 1, and then speeding up the speed at which the gas contacts the sensor in the alarm housing 1, which helps to quickly detect leaked combustible gas in a poorly ventilated environment. On the contrary, in the opposite direction of the airflow, the Tesla valve structure 2 forms an obstruction, effectively preventing the backflow of the gas, thereby achieving the effect of unidirectional flow, ensuring that the gas can pass smoothly only in the correct direction, which not only improves the response speed of the alarm, but also reduces the possibility of false alarms.

[0034] like Figures 3 to 5 As shown, in this embodiment, the first air inlet 211 includes a first arc-shaped air inlet plate 2111 and a first main air inlet plate 2112 connected to the first arc-shaped air inlet plate 2111, and the second air inlet 212 includes a second arc-shaped air inlet plate 2121 and a second main air inlet plate 2122 connected to the second arc-shaped air inlet plate 2121, and the first main air inlet plate 2112 and the second main air inlet plate 2122 are inclined in opposite directions. When the gas flows through the main air inlet 213, the first air inlet 211 and the second air inlet 212 are staggered, which can apply pressure to the gas entering the main air inlet 213, play an accelerating role, so that the combustible gas quickly enters the alarm housing 1, and improves the response speed of the alarm. That is, when the combustible gas flows through the main air inlet 213, due to the staggered design and opposite inclination direction of the first main air inlet plate 2112 and the second main air inlet plate 2122, a pressure difference can be provided for the gas flow, so that the gas is accelerated when entering the main air inlet 213, and is quickly guided into the alarm housing 1, thereby improving the alarm's response speed to combustible gas leakage and ensuring that the alarm can be quickly sounded when a leak occurs. In the opposite direction, that is, if the gas attempts to flow out of the alarm housing 1 and pass through the Tesla valve structure 2, the gas will be blocked by the first arc-shaped air inlet plate 2111 and the second arc-shaped air inlet plate 2121 and cannot flow out smoothly, which not only achieves the effect of one-way flow, but also improves the alarm's response speed and sensitivity to combustible gas leakage by accelerating the incoming gas.

[0035] like Figure 5 As shown, in this embodiment, a first air intake block 214 is arranged between the first curved air intake plate 2111 and the second main air intake plate 2122, and a first branch air intake duct 215 is formed between the first air intake block 214 and the first curved air intake plate 2111; a second air intake block 216 is arranged between the second curved air intake plate 2121 and the first main air intake plate 2112, and a second branch air intake duct 217 is formed between the second air intake block 216 and the second curved air intake plate 2121, and the first branch air intake duct 215 and the second branch air intake duct 217 are both connected to the main air intake duct 213. Among them, the solid arrow line indicates the gas flow direction of the main air inlet 213, and the dotted arrow line indicates the gas flow direction of the first branch air inlet 215 and the second branch air inlet 217. The first branch air inlet 215 and the second branch air inlet 217 are respectively arranged on both sides of the main air inlet 213. The output air flow direction of the first branch air inlet 215 and the output air flow direction of the second branch air inlet 217 are along the air flow direction of the main air inlet 213, which can enhance the gas flow rate of the main air inlet 213, accelerate the combustible gas to enter the alarm housing 1, and reduce the alarm response delay caused by the slow gas diffusion speed.

[0036] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

[0037] The above is an exemplary description of the utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the utility model patent is not limited to the above-mentioned method. As long as various improvements are made by adopting the method concept and technical solution of the utility model patent, or the concept and technical solution of the utility model patent are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A combustible gas leak alarm, comprising an alarm housing, wherein the alarm housing is provided with an air inlet, characterized in that: A Tesla valve structure is arranged around the alarm housing, and the Tesla valve structure is connected to the air inlet so that the gas can quickly enter the alarm housing.

2. The combustible gas leak alarm according to claim 1, characterized in that: The Tesla valve structure includes at least two groups of interconnected accelerating air intake units, wherein the accelerating air intake unit includes a first air intake part and a second air intake part, the first air intake part and the second air intake part are staggered, and a main air intake passage is formed between the first air intake part and the second air intake part.

3. The combustible gas leak alarm according to claim 2, characterized in that: The first air intake portion includes a first curved air intake plate and a first main air intake plate connected to the first curved air intake plate, the second air intake portion includes a second curved air intake plate and a second main air intake plate connected to the second curved air intake plate, and the first main air intake plate and the second main air intake plate are inclined in opposite directions.

4. The combustible gas leak alarm according to claim 3, characterized in that: A first air intake block is disposed between the first arc-shaped air intake plate and the second main air intake plate, and a first branch air intake passage is formed between the first air intake block and the first arc-shaped air intake plate; A second air intake block is disposed between the second arc-shaped air intake plate and the first main air intake plate, and a second branch air intake passage is formed between the second air intake block and the second arc-shaped air intake plate; The first branch air intake passage and the second branch air intake passage are both communicated with the main air intake passage.

5. The combustible gas leak alarm according to claim 1, characterized in that: There are two Tesla valve structures, and the two Tesla valve structures are centrally symmetrically arranged on both sides of the alarm housing.

6. The combustible gas leak alarm according to claim 1, characterized in that: The alarm housing includes an upper housing and a lower housing. The upper housing is provided with a first clamping groove. The lower housing protrudes outward to form a first clamping portion. The first clamping portion is fixedly connected to the first clamping groove. The Tesla valve structure is arranged in the upper housing.

7. The combustible gas leak alarm according to claim 6, characterized in that: It also includes a circuit board arranged inside the alarm housing, a connecting hole is arranged on the circuit board, a first connecting column is formed by protruding outward from the upper housing, a second connecting column is formed by protruding outward from the lower housing, and a connecting member passes through the second connecting column and the connecting hole cooperates with the first connecting column.

8. The combustible gas leak alarm according to claim 6, characterized in that: It also includes a mounting base, the mounting base is provided with a second clamping portion, the lower shell is provided with a second clamping groove, and the second clamping portion is fixedly connected with the second clamping groove.

9. The combustible gas leak alarm according to claim 8, characterized in that: The second clamping slot includes an inlet and outlet slot and a connecting slot connected to the inlet and outlet slot, and the slot width of the inlet and outlet slot is greater than the slot width of the connecting slot. The second clamping portion passes through the inlet and outlet slot and is clamped and connected to the connecting slot.

10. The combustible gas leak alarm according to claim 9, characterized in that: The second clamping portion includes a base and a clamping joint connected to the base, wherein the width of the clamping joint is greater than the width of the base, and the clamping joint is clamped and connected to the connecting groove after passing through the entry and exit groove.

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