A burner detection device and a detection method thereof

Abstract

The application discloses a kind of detection device of burner and its detection method, the detection device is located in the center of the burner, including detection body, for with the bottom of pot body is resisted, the detection body includes the top temperature probe at its top end, and the side temperature probe at its side face;The top temperature probe is used to detect top temperature, and the side temperature probe is used to detect side wall temperature, and the side temperature probe includes multiple evenly distributed along the circumferential surface of detection body.This application can quickly and automatically identify whether the fire cover is leaking according to the detected temperature rising rate, automatically extinguish the flame to protect and remind the user to reset the fire cover, thereby preventing the temperature probe from working at high temperature for a long time, and prolonging the service life of the temperature probe.

Description

Technical Field

[0001] This invention relates to a burner detection device and method, and more particularly to a detection device and method for identifying burner leaks. Background Technology

[0002] Gas stoves typically feature anti-dry-burning temperature control probes to prevent burners from dry-burning. These probes have a specific operating temperature range; most commercially available probes operate below 300 degrees Celsius. Prolonged exposure to temperatures exceeding this range can affect the probe's sensitivity and accuracy. This is especially true in high-temperature environments, which can shorten the probe's lifespan. Particularly when users remove and replace the inner burner cap for cleaning, if the cap is not properly seated, causing a leak, the flame can directly scorch the probe, frequently triggering the dry-burning protection. Users may not recognize this leak as the cause, making it impossible to identify and adjust the situation themselves. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defects in the prior art and provide a detection device and detection method for a burner that can identify whether the burner is leaking flame, thereby protecting the temperature control probe and extending its working life.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution: a burner detection device, disposed at the center of the burner, comprising a detection body for abutting against the bottom of the pot body, characterized in that,

[0005] The detector includes a top temperature probe at its top and a side temperature probe at its side.

[0006] The top temperature probe is used to detect the top temperature, and the side temperature probe is used to detect the side wall temperature. The side temperature probe includes a plurality of probes evenly distributed along the circumference of the probe body.

[0007] Preferably, the plurality of side temperature probes comprises at least two layers arranged along the height direction of the probe, and the side temperature probes of each layer are evenly distributed along the circumference.

[0008] Preferably, a support rod is connected to the lower part of the detector, the detector can move up and down along the support rod, and an elastic element is provided between the detector and the support rod, the elastic element providing elastic force to keep the detector always pressed against the pot body upward.

[0009] Preferably, the detector includes a housing, and an accommodating space is formed inside the housing. The top temperature probe and the side temperature probe are both located in the accommodating space. The top temperature probe abuts against the top of the housing, and the side temperature probe abuts against the side wall of the housing.

[0010] Preferably, the housing includes an inner shell located in the middle, the top of the inner shell having an end face, and the top temperature probe abutting against the inside of the end face;

[0011] The inner shell is surrounded by an outer shell at intervals, and the side temperature probes are located on the inner side of the outer shell and are evenly distributed along the circumference of the outer shell.

[0012] Both the side temperature probe and the top temperature probe are connected to the control unit via signal lines inside the inner shell.

[0013] A method for detecting a burner having any of the detection devices described above, characterized by comprising the following steps:

[0014] Acquire the top temperature and multiple sidewall temperatures of the probe;

[0015] The burner is determined to be in a pot-sitting state based on the top temperature and multiple side wall temperatures.

[0016] Whether the burner is leaking fire is determined based on whether the burner is in the pot-sitting state and the temperatures of the multiple side walls.

[0017] Preferably, the step of determining whether the burner is in the pot-sitting state based on the top temperature and multiple side wall temperatures specifically involves:

[0018] The average sidewall temperature is obtained based on multiple sidewall temperatures.

[0019] If the top temperature is higher than the average sidewall temperature, the pot is not in the sitting state;

[0020] If the top temperature is less than or equal to the average sidewall temperature, it is in the sitting state.

[0021] Preferably, determining whether the burner is leaking flame based on whether the burner is in a pot-sitting state and the temperatures of the multiple side walls specifically includes:

[0022] Obtain the heating rate of the multiple sidewall temperatures;

[0023] If the burner is in a sitting state and at least two of the heating rates of the multiple sidewalls are greater than the first preset rate, the burner will leak flame.

[0024] If the burner leaks flame when it is not in a pot-sitting state and at least two of the heating rates of the multiple sidewalls are greater than the second preset rate.

[0025] Preferably, at least two of the heating rates of the plurality of sidewall temperatures are greater than a first preset rate, specifically, determining whether the two largest heating rates of the plurality of sidewall temperatures are both greater than the first preset rate.

[0026] Of the multiple sidewall temperature heating rates, at least two are greater than the second preset rate. Specifically, it is determined whether the two largest heating rates of the multiple sidewall temperatures are both greater than the second preset rate.

[0027] Preferably, the detection method further includes, if a burner leak is determined, performing flameout protection and reminding the user to reset the burner cap.

[0028] The significant advantages of this invention are as follows: the burner detection device and method of this invention can quickly and automatically identify whether the burner cap is leaking flame based on the detected heating rate, automatically shut off the flame, and remind the user to reset the burner cap, thereby preventing the temperature probe from operating at high temperatures for extended periods and extending its service life. Furthermore, it only requires modification of the existing temperature probe, without the need for additional components, resulting in a small size and low cost. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the detection device and the burner having the detection device according to Embodiment 1 of the present invention;

[0030] Figure 2 This is a schematic diagram of the detection device according to Embodiment 1 of the present invention;

[0031] Figure 3 This is a schematic flowchart of the detection method according to Embodiment 2 of the present invention;

[0032] Figure 4 This is a flowchart illustrating step S3 in the detection method of Embodiment 2 of the present invention. Detailed Implementation

[0033] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0034] Example 1

[0035] like Figure 1 , 2 As shown, the detection device of the burner in Embodiment 1 of the present invention is located at the center of the burner, and the top of the detection device extends out of the center of the burner and contacts the bottom of the pot placed on the burner.

[0036] The detection device includes a detector 2 and a support rod 1 connected below the detector 2. The detector 2 can move up and down along the support rod 1, so that when a pot is placed on the burner, it moves downward along the support rod 1 under the action of the pot, and always remains in contact with the bottom of the pot. Preferably, an elastic element 3 is provided between the detector 2 and the support rod 1. The elastic element 3 can provide the detector 2 with an upward elastic force so that the detector 2 can always be in close contact with the pot on the burner. Preferably, the elastic element 3 is a spring.

[0037] The detector 2 includes a top temperature probe 4 located at its top and side temperature probes 5 located on its sides. Multiple side temperature probes 5 are evenly distributed along the circumference of the detector 2. The top temperature probe 4 and the side temperature probes 5 are used to detect the temperature of the top and sidewalls of the detector 2, respectively. To ensure the accuracy of sidewall temperature measurement and reduce interference, the side temperature probes 5 are preferably positioned 5mm to 10mm from the top of the detector. More preferably, the multiple side temperature probes 5 comprise at least two layers arranged along the height direction of the detector 2, and the side temperature probes in each layer are evenly distributed along the circumference. The side temperature probes between any two layers can be staggered or aligned.

[0038] The detector 2 includes a housing 21, within which an accommodating space is formed. A radial support surface 211 is formed inside the housing 21 to support one end of an elastic element 3. The other end of the elastic element 3 abuts against the support rod 1, preferably against the top of the support rod 1. When the detector 2 is subjected to downward force, the elastic element 3 compresses, causing the detector 2 to consistently press upward against the pot body.

[0039] Both the top temperature probe 4 and the side temperature probe 5 are located within the accommodating space and are in contact with the housing 21. That is, the top temperature probe 4 is located inside the top of the housing 21 and is in contact with the top of the housing, while the side temperature probes 5 are evenly distributed inside the side walls of the housing 21 and are in contact with the side walls.

[0040] Preferably, the housing 21 includes an inner shell 212, the inner shell 212 having a support surface 211 on its inner side, and an end face 214 at its top. The inner side of the end face 214 has a slot for holding the top temperature probe 4, and the top temperature probe 4 abuts against the inner side of the end face 214. An outer shell 213 is also spaced around the outer periphery of the inner shell 212. Side temperature probes 5 are located on the inner circumferential side of the outer shell 213 and are evenly distributed along the circumference of the outer shell 213. The inner side of the outer shell 213 has a groove for accommodating the side temperature probes 5. The side temperature probes 5 are laterally arranged through the inner shell 212. Both the side temperature probes 5 and the top temperature probe 4 are connected to the control unit via a signal line 6 located inside the inner shell 212. Furthermore, the signal line 6 extends inside the support rod 1. Preferably, a sealing element is provided at the connection between the inner shell 212 and the support rod 1 for sealing, ensuring that the signal lines inside the inner shell 212 are not affected by external heat.

[0041] Preferably, the side temperature probe 5 comprises multiple layers spaced vertically on the circumferential surface of the probe body 2. Each layer has multiple side temperature probes 5 uniformly arranged circumferentially. Preferably, the top temperature probe 4 and the side temperature probes 5 are thermistors.

[0042] When the pot is placed on the burner, the probe 2 moves downward along the support rod 1, compressing the spring, and the top temperature probe 4 at the top of the probe 2 contacts the bottom of the pot to detect the temperature at the bottom of the pot. Simultaneously, the side temperature probe 5 detects the temperature on the side of the burner. This can then be used to determine if the burner is leaking flame.

[0043] The burner's detection device can detect the top temperature using a top temperature probe and the side wall temperature using a side temperature probe. This allows it to determine whether the burner is in a "boil-supported" state and whether the burner cap is leaking flame, thus providing flameout protection and reminding the user to reset the burner cap. Furthermore, the combined use of the side and top temperature probes ensures more accurate temperature measurement and can also be used to detect overflow and dry burning. Moreover, it only requires minor modifications to the existing temperature probes, without adding any other components, making it small and low-cost.

[0044] Example 2

[0045] like Figure 3 As shown, the burner detection method of Embodiment 2 of the present invention specifically includes the burner detection device of Embodiment 1 above. The detection device includes a top temperature probe 4 located at the top and in contact with the bottom of the pot body, and multiple side temperature probes 5 located on the side, which are used to detect the top temperature and side wall temperature of the probe body 2, respectively.

[0046] The detection method specifically includes:

[0047] Turn on the stove and activate the various temperature probes inside detector 2 to measure the temperature.

[0048] S1, obtain the top temperature and multiple sidewall temperatures of the probe 2. Specifically, the top temperature is detected by the top temperature probe 4, and the sidewall temperatures are detected by the side temperature probe 5.

[0049] S2, based on the top temperature and multiple side wall temperatures, determine whether the burner is in the pot-sitting state; the pot-sitting state is the state in which a pot is placed on the burner, and the non-pot-sitting state is the state in which no pot is placed on the burner.

[0050] Specifically, determining whether to place the pot on the stove includes obtaining the average temperature T of the sidewalls based on the acquired multiple sidewall temperatures. ave The average temperature T of the sidewall ave This is the average of multiple sidewall temperatures. When the top temperature T... top >T ave At this time, the pot is not in the sitting state, when T top ≤T ave At this time, the pot is in the sitting position.

[0051] S3. Determine whether the burner is leaking fire based on whether the burner is in the pot-sitting state and the temperature of the multiple side walls.

[0052] Specifically, such as Figure 4 As shown, the process includes: S31, first acquiring the heating rate of multiple sidewall temperatures. The detection time interval for acquiring the sidewall temperatures is t, and the acquired current multiple sidewall temperatures are {T1, T2, T3…, T…}. N The previous moment's multiple sidewall temperatures are {T1′,T2′,T3′…,T}. N If ′}, then the heating rates of the multiple sidewall temperatures are {k1,k2,k3…,k N}, where k n =(T n -T n ′) / t.

[0053] S32, if the burner is in the pot-sitting state, and at least two of the heating rates of the multiple sidewalls are greater than the first preset rate k1, the burner leaks flame. When the burner is in the pot-sitting state, the heating rate of the sidewalls usually has a relatively stable range, but when the inner ring burner cap is not in place and leaks flame, the heating rate of the sidewalls will inevitably rise rapidly and break through this range.

[0054] Specifically, this can be achieved by obtaining the two fastest heating rates (Ka) among the plurality of sidewall temperatures. max1 and K max2 It is determined whether the two fastest heating rates are both greater than a first preset rate k1. Preferably, the first preset rate k1 is 5℃ / s-10℃ / s.

[0055] S33, if the burner is not in the pot-supported state, and at least two of the heating rates of the multiple sidewalls are greater than the second preset rate k2, the burner leaks flame. When the burner is not in the pot-supported state, the heating rate of the sidewalls usually has a relatively stable range, but when the inner ring burner cap is not in place and leaks flame, the heating rate of the sidewalls will inevitably rise rapidly and break through this range.

[0056] Specifically, it can still be determined by the two K values ​​with the fastest heating rate among the multiple sidewall temperatures obtained. max1 and K max2 It is determined whether the two fastest heating rates are both greater than the second preset rate k2. Preferably, the second preset rate k2 is 0.8℃ / s-2℃ / s.

[0057] The method also includes S4, which, if a burner leak is detected, performs flameout protection and reminds the user to reset the burner cap.

[0058] The detection method of this burner first determines whether the burner is in the pot-sitting state by detecting the top temperature and side wall temperature in the detection device. Then, by determining whether the burner is in the pot-sitting state and the heating rate of the side wall temperature, it determines whether the burner cap is leaking flame, thereby performing flameout protection and reminding the burner cap to be reset. Moreover, the top temperature and side wall temperature obtained in the detection method of this burner can also be used to determine other states, such as whether dry burning or overflow has occurred.

[0059] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A detection device for a burner, disposed at the center of the burner, comprising a detection body (2) for abutting against the bottom of the pot body, characterized in that, The probe (2) includes a top temperature probe (4) located at its top and a side temperature probe (5) located on its side. The top temperature probe (4) is used to detect the top temperature, and the side temperature probe (5) is used to detect the side wall temperature. The side temperature probe (5) includes a plurality of probes evenly distributed along the circumference of the probe body (2).

2. The burner detection device as described in claim 1, characterized in that, The plurality of said side temperature probes (5) include at least two layers arranged along the height direction of the probe body (2), and the side temperature probes (5) of each layer are evenly distributed along the circumference.

3. The burner detection device as described in claim 1, characterized in that, The detector (2) is connected to a support rod (1) below it. The detector (2) can move up and down along the support rod (1). An elastic element (3) is provided between the detector (2) and the support rod (1). The elastic element (3) provides elastic force to keep the detector (2) always pressed against the pot body.

4. The burner detection device according to any one of claims 1-3, characterized in that, The detector (2) includes a housing (21) with an accommodating space inside. The top temperature probe (4) and the side temperature probe (5) are both located in the accommodating space. The top temperature probe (4) abuts against the top of the housing (21), and the side temperature probe (5) abuts against the side wall of the housing (21).

5. The burner detection device as described in claim 4, characterized in that, The housing (21) includes an inner shell (212) located in the middle, the top of the inner shell (212) having an end face (214), and the top temperature probe (4) abutting against the inside of the end face (214); The outer shell (213) is spaced around the outer side of the inner shell (212), and the side temperature probe (5) is located on the inner side of the outer shell (213) and is evenly distributed along the circumference of the outer shell (213). Both the side temperature probe (5) and the top temperature probe (4) are connected to the control unit via signal lines inside the inner shell (212).

6. A method for detecting a burner having a detection device as described in any one of claims 1-5, characterized in that, Includes the following steps, Acquire the top temperature and multiple sidewall temperatures of the probe; The burner is determined to be in a pot-sitting state based on the top temperature and multiple side wall temperatures. Whether the burner is leaking fire is determined based on whether the burner is in the pot-sitting state and the temperatures of the multiple side walls.

7. The burner detection method as described in claim 6, characterized in that, The step of determining whether the burner is in a pot-sitting state based on the top temperature and multiple side wall temperatures specifically involves: The average sidewall temperature is obtained based on multiple sidewall temperatures. If the top temperature is higher than the average sidewall temperature, the pot is not in the sitting state; If the top temperature is less than or equal to the average sidewall temperature, it is in the sitting state.

8. The burner detection method as described in claim 6, characterized in that, The determination of whether the burner is leaking flame based on whether the burner is in the pot-sitting state and the temperatures of the multiple side walls specifically includes: Obtain the heating rate of the multiple sidewall temperatures; If the burner is in a sitting state and at least two of the heating rates of the multiple sidewalls are greater than the first preset rate, the burner will leak flame. If the burner leaks flame when it is not in a pot-sitting state and at least two of the heating rates of the multiple sidewalls are greater than the second preset rate.

9. The burner detection method as described in claim 8, characterized in that, Of the multiple sidewall temperatures, at least two are greater than a first preset rate. Specifically, it is determined whether the two largest heating rates of the multiple sidewall temperatures are both greater than the first preset rate. Of the multiple sidewall temperature heating rates, at least two are greater than the second preset rate. Specifically, it is determined whether the two largest heating rates of the multiple sidewall temperatures are both greater than the second preset rate.

10. The burner detection method as described in claim 6, characterized in that, The detection method also includes, if a burner leak is detected, performing flameout protection and reminding the user to reset the burner cap.

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