Portable flameout protection detection device

Abstract

The utility model discloses a portable flameout protection detection device, which belongs to the technical field of gas stove detection, and comprises a blocking cover, the blocking cover is provided with a covering inner cavity and a first airflow port communicated with the covering inner cavity, and the bottom end of the covering inner cavity is open; the handle is fixedly connected with the blocking cover, the handle is provided with a mounting inner cavity, and the mounting inner cavity is communicated with the covering inner cavity; and the driving part is arranged in the mounting inner cavity in a penetrating manner, and the driving part can do circulating reciprocating motion in the handle inner cavity, so that an airflow channel can be formed in the detection device. According to the flame-out protection needle, the driving part can do circulating reciprocating motion in the length direction of the mounting inner cavity to drive airflow around the blocking cover to flow, the airflow flows into the covering inner cavity from the first airflow opening of the blocking cover, an airflow channel is formed, and the flame-out protection needle can be rapidly cooled through the airflow channel.

Description

Technical Field

[0001] This utility model relates to the technical field of gas stove testing, and in particular to a portable flameout protection testing device. Background Technology

[0002] When a gas stove is working, it typically burns fuel to generate heat for heating. To ensure practical safety, existing household gas stoves are usually equipped with a flame failure needle 5, which automatically cuts off the gas supply when the flame goes out to prevent gas leaks from causing danger. This flame failure needle 5 is usually located near the central combustion zone.

[0003] However, due to the high temperature in the central combustion zone, the flame failure needle 5 may fail as the gas stove ages, significantly reducing its flame failure protection function. Therefore, regular inspections of the gas stove are necessary to reduce potential safety hazards.

[0004] There are currently two common detection methods:

[0005] Firstly, the visual inspection method involves directly visually inspecting the outer surface and position of the flameout protection pin 5. However, this method is subjective and makes it difficult to ensure the reliability of the test results.

[0006] Secondly, the flameout test involves lighting the gas stove, letting the flame burn for about one minute, then turning the flame down to its minimum and blowing it out. If the solenoid valve closes within 60 seconds and there is no gas leak, the flameout protection needle 5 is considered normal. However, this method is time-consuming, and environmental factors during testing (such as gas pressure, gas quality, and burner status) can affect the accuracy of the results. For example, insufficient gas pressure or blocked burner orifices can cause an unstable flame, affecting the temperature sensing of the flameout protection needle 5. This requires continuous testing, resulting in low work efficiency. Utility Model Content

[0007] To overcome the technical problem that the reliability and repeatability of flameout protection needle test results are difficult to guarantee in existing technologies, requiring testers to repeatedly perform tests, thus affecting work efficiency, this utility model provides a portable flameout protection testing device, comprising:

[0008] The shield has an inner cavity and a first airflow port communicating with the inner cavity, and the bottom end of the inner cavity is open.

[0009] A handle is fixedly connected to the cover, and the handle has an inner cavity for mounting, which communicates with the inner cavity of the cover.

[0010] A drive unit is disposed within the mounting cavity, and the drive unit is capable of reciprocating motion within the handle cavity, thereby creating an airflow channel within the detection device.

[0011] Furthermore, the shield, the handle, and the drive unit are all made of high-temperature resistant materials.

[0012] Furthermore, the driving unit includes a driving head, which is fitted and installed in the mounting cavity.

[0013] Furthermore, the drive unit also includes a drive rod, which is integrally formed with the drive head and extends out of the mounting cavity.

[0014] Furthermore, a limiting rod is provided at the end of the drive rod away from the drive head, and the limiting rod is detachably connected to the end of the handle away from the cover.

[0015] Furthermore, the drive head and the drive rod are combined in a T-shaped structure.

[0016] Furthermore, the handle has a second airflow port, which communicates with the mounting cavity, and the first airflow port and the second airflow port form the airflow channel.

[0017] Furthermore, the shield has a cylindrical structure.

[0018] Furthermore, the first airflow port is located at the top of the baffle.

[0019] Furthermore, the handle has a rod-shaped structure; the length of the handle from the end near the baffle to the end away from the baffle is 80cm~120cm, and the second airflow port is located 30cm~50cm away from the baffle. Beneficial effects

[0020] The beneficial effects of adopting the technical solution of this utility model are as follows:

[0021] The bottom of the baffle completely covers the flameout protection needle, ensuring it is fully contained within the baffle's inner cavity and effectively isolating it from the flame. This inner cavity communicates with the handle's mounting cavity, which also houses a drive unit capable of reciprocating along its length. This drive unit circulates air around the baffle, drawing air into the inner cavity through the baffle's first airflow port, creating an airflow channel that rapidly cools the flameout protection needle. In use, the baffle is placed over the flameout protection needle, and the gas is turned on. The gas stove is operated by first activating the drive unit, which then circulates within the handle's inner cavity. If the flame extinguishes, the gas stove's flameout protection function is functioning correctly; if the flame continues to burn, the flameout protection function is malfunctioning and requires immediate replacement. The operation is simple and quick, improving work efficiency and reducing the impact of environmental factors. The test results are available in a single test and are highly reliable, avoiding the shortcomings of existing technologies where the reliability and repeatability of flameout protection needle test results are difficult to guarantee. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a portable flameout protection detection device according to this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of a portable flameout protection detection device (state one) during testing according to this utility model;

[0025] Figure 3 This is a schematic diagram of the airflow channel of a portable flameout protection detection device (state one) according to this utility model;

[0026] Figure 4 This is a schematic diagram of the structure of a portable flameout protection detection device (state two) during testing according to this utility model;

[0027] Figure 5 This is a schematic diagram of the airflow channel of a portable flameout protection detection device (state two) according to this utility model.

[0028] Explanation of the reference numerals in the figure:

[0029] 1. Baffle; 11. Covered inner cavity; 12. First airflow port; 2. Handle; 21. Installed inner cavity; 22. Second airflow port; 3. Drive unit; 31. Drive head; 32. Drive rod; 321. Limit rod; 4. Airflow channel; 5. Flameout protection pin. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0031] Please refer to Figures 1 to 5 A portable flameout protection detection device, characterized in that it comprises: a cover 1 having an inner cavity 11 and a first airflow port 12 communicating with the inner cavity 11, the bottom end of the inner cavity 11 being open; a handle 2 fixedly connected to the cover 1, the handle 2 having a mounting cavity 21 communicating with the inner cavity 11; and a drive unit 3 passing through the mounting cavity 21, the drive unit 3 being capable of cyclic reciprocating motion within the handle cavity 21, thereby forming an airflow channel 4 in the detection device.

[0032] In this technical solution, the bottom end of the baffle 1 can completely cover the flameout protection needle 5, so that the flameout protection needle 5 can be completely located in the inner cavity 11 of the baffle, isolating the flameout protection needle 5 from the flame. The inner cavity 11 of the baffle is connected to the mounting cavity 21 of the handle 2. The mounting cavity 21 is also provided with a driving part 3, which can perform cyclic reciprocating motion along the length of the mounting cavity 21, driving the airflow around the baffle 1. The airflow flows into the inner cavity 11 of the baffle 1 from the first airflow port 12 of the baffle 1, forming an airflow channel 4. This airflow channel 4 can quickly cool the flameout protection needle 5. In use, the baffle 1 is... The flameout protection needle 5 is placed on the gas stove. Then, the drive unit 3 is operated so that it can reciprocate in the inner cavity 21 of the handle. If the flame of the gas stove goes out, the flameout protection function of the gas stove is normal; if the flame of the gas stove continues to burn, the flameout protection function of the gas stove is abnormal and needs to be replaced in time. The operation is simple and the operation time is short, which improves work efficiency, reduces the influence of environmental factors, and the test results can be known in one test. Moreover, the test results are highly reliable, avoiding the defects of the flameout protection needle 5 in the prior art, which is difficult to guarantee the reliability and repeatability of the test results.

[0033] It should be noted that since the baffle 1 is placed over the flameout protection needle 5, and the flameout protection needle 5 is usually installed in the central combustion zone of the gas stove, where the temperature is very high; therefore, in this embodiment, the baffle 1, handle 2, and drive unit 3 are all made of high-temperature resistant materials. The baffle 1 can effectively isolate the flameout protection needle 5 from the flame, quickly reduce the heat of the flameout protection needle 5, and block the heating of the thermocouple of the flameout protection needle 5. The handle 2 and drive unit 3 allow the testing personnel to operate more easily without burning them. Preferably, the baffle 1, handle 2, and drive unit 3 are all made of aluminum alloy, which has a good heat insulation effect and high heat resistance.

[0034] Furthermore, by Figure 2 and Figure 4As shown, the driving unit 3 includes a driving head 31, which is fitted into the mounting cavity 21 and can move back and forth within the mounting cavity 21. In this embodiment, the movement of the driving head 31 is achieved by the inspector pulling the driving rod 32. Specifically, the driving unit 3 also includes a driving rod 32, which is integrally formed with the driving head 32. Preferably, the driving head 31 and the driving rod 32 are combined in a T-shape, with the driving rod 32 extending from the mounting cavity 21. This simple structure facilitates the inspector pulling the driving rod 32, allowing the driving head 31 to move back and forth within the mounting cavity 21. A limiting rod 321 is provided at the end of the handle 2 away from the drive head 31. The limiting rod 321 is detachably connected to the end of the handle 2 away from the cover 1. Preferably, the limiting rod 321 is engaged at the end of the handle 2 away from the cover 1. When the device is picked up, the drive part 3 is not easy to fall off because the limiting rod 321 can be engaged at the end of the handle 2 away from the cover 1. The left and right sides of the end of the handle 2 away from the cover 1 extend towards the inner cavity 11, forming a step. This step can prevent the drive head 31 from being pulled out. When the device is operated, the drive rod 32 can be pulled by simply pulling the limiting rod 321. The step restricts the drive head 31 from being pulled out. The operation is simple and the structure is stable.

[0035] In this technical solution, the formation of the airflow channel 4 is not limited. The formation of the airflow channel 4 is described below using only two embodiments. Example

[0036] The shield 1 has a cylindrical structure, the first airflow port 12 is located at the top of the shield 1, and the handle 2 has a rod-shaped structure, and a second airflow port 22 is provided on the handle 2. The second airflow port 22 communicates with the mounting cavity 21, and the first airflow port 12 and the second airflow port 22 form the airflow channel 4.

[0037] In this embodiment, the handle 2 is provided with a second airflow port 22. Pulling the drive unit 3 causes it to move upward in the mounting cavity 21. When the drive unit 3 is pulled to the position of the second airflow port 22, gas enters from the first airflow port 12 of the baffle 1, flows through the flameout protection needle 5, and then enters the mounting cavity 21, exiting from the second airflow port 22. This dissipates heat from the device, achieving heat dissipation and enabling the flameout protection needle to cool down. A specific embodiment is provided below. Figure 2 and Figure 3 As shown, preferably, the length of the handle 2 from the end near the baffle 1 to the end away from the baffle 1 is 80cm to 120cm, and the second air outlet 22 is located 30cm to 50cm away from the baffle 1. Gas can be slowly discharged from the second air outlet 22, reducing the occurrence of high temperature when the gas is discharged. Example

[0038] The baffle 1 has a cylindrical structure, with the first airflow port 12 located at the top of the baffle 1. In this embodiment, pulling the drive unit 3 away from the inner cavity 11 of the baffle allows gas to enter through the first airflow port 12, flowing through the flameout protection needle 5. Pushing the drive unit 3 back brings it closer to the inner cavity 11 of the baffle, causing the gas in the inner cavity 11 to flow out through the first airflow port 12, dissipating heat from the device and achieving heat dissipation. This allows the flameout protection needle to cool down. A specific embodiment is described below. Figure 4 and Figure 5 As shown.

[0039] It is worth noting that the flameout protection needle 5 is a standard technical tool for those skilled in the art, and its working principle mainly relies on the cooperation of a thermocouple and a solenoid valve. When the stove is first used, after the small flame is ignited, the thermocouple is heated by the flame, generating a thermoelectric potential. This thermoelectric potential is transmitted to the solenoid coil through a wire, causing it to generate a magnetic field, which in turn causes the solenoid valve to engage, opening the gas valve and ensuring unobstructed combustion. In this way, the stove can burn normally. However, if the flame is accidentally extinguished, the thermoelectric potential of the thermocouple will drop rapidly to zero, the solenoid valve will lose its power supply, and under the action of the spring, it will quickly reset, closing the gas valve, thereby preventing gas leakage and ensuring safe use. This will not be elaborated on in detail here.

[0040] When the baffle 1 completely covers the flameout protection needle 5, isolating the flame from the flame and reducing the temperature of the flameout protection needle 5, it blocks the heating of the thermocouple and prevents the generation of thermoelectric potential. As a result, no gas passes through the stove, and the flame goes out, indicating that the flameout protection needle 5 can still work. However, if the stove can still burn after the temperature of the flameout protection needle 5 is reduced, it means that the heating of the thermocouple has not been successfully blocked, the thermocouple can still generate thermoelectric potential, the flameout protection needle 5 does not work, and its flameout function has failed.

[0041] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A portable flameout protection detection device, characterized in that, include: The shield (1) has an inner cavity (11) and a first airflow port (12) communicating with the inner cavity (11), and the bottom end of the inner cavity (11) is open. The handle (2) is fixedly connected to the cover (1), and the handle (2) is provided with an installation cavity (21), which is connected to the cover cavity (11); The drive unit (3) is installed in the mounting cavity (21). The drive unit (3) can reciprocate in the handle cavity (21) so that an airflow channel (4) can be formed in the detection device.

2. The portable flameout protection detection device according to claim 1, characterized in that, The shield (1), the handle (2) and the drive unit (3) are all made of high-temperature resistant materials.

3. The portable flameout protection detection device according to claim 1, characterized in that, The drive unit (3) includes a drive head (31), which is fitted into the mounting cavity (21).

4. The portable flameout protection detection device according to claim 3, characterized in that, The drive unit (3) also includes a drive rod (32), which is integrally formed with the drive head (31) and extends out of the mounting cavity (21).

5. A portable flameout protection detection device according to claim 4, characterized in that, The drive rod (32) has a limiting rod (321) at one end away from the drive head (31), and the limiting rod (321) is detachably connected to the end of the handle (2) away from the cover (1).

6. A portable flameout protection detection device according to claim 4 or 5, characterized in that, The drive head (31) and the drive rod (32) are combined in a T-shaped structure.

7. The portable flameout protection detection device according to claim 1, characterized in that, The handle (2) has a second airflow port (22), which communicates with the mounting cavity (21). The first airflow port (12) and the second airflow port (22) form the airflow channel (4).

8. A portable flameout protection detection device according to claim 1, characterized in that, The shield (1) has a cylindrical structure.

9. A portable flameout protection detection device according to claim 1, characterized in that, The first airflow port (12) is located at the top of the baffle (1).

10. A portable flameout protection detection device according to claim 7, characterized in that, The handle (2) has a rod-shaped structure; the length of the handle (2) from the end near the baffle (1) to the end away from the baffle (1) is 80cm~120cm, and the second air outlet (22) is located 30cm~50cm away from the baffle (1).

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