Cooker ignition needle cold and hot impact equipment

Abstract

The utility model provides stove ignition needle cold and hot impact equipment. The stove ignition needle cold and hot impact equipment comprises a fixing assembly and a water dripping assembly, the fixing assembly comprises a first fixing plate, the first fixing plate is an annular plate and is used for being arranged on the peripheral side of the outer ring gas mixing chamber in a sleeving mode, and the ignition needle is fixed to the first fixing plate; the water dripping assembly comprises a flow guide pipe, a water outlet of the flow guide pipe is located above the discharging part of the ignition needle, and the projection, facing the ignition needle in the vertical direction, of the water outlet of the flow guide pipe at least partially coincides with the discharging part of the ignition needle. According to the utility model, the ignition needle is vertically fixed at the periphery of the outer ring gas mixing chamber of the combustor, so that the discharge part of the ignition needle is directly exposed in the outer flame area of the flame, and the heated position under the actual combustion working condition is accurately simulated. The projection of the water outlet of the flow guide pipe and the projection of the discharge part are designed to be coincident, so that the dripping path of cold water is consistent with the dripping path of condensate water / oil stain in real use, the application position and direction of temperature shock are more practical, and the test accuracy is improved.

Description

Technical Field

[0001] This utility model relates to the field of stoves, and in particular to a stove ignition needle thermal shock device. Background Technology

[0002] Among the various components of a stove, the ignition needle plays a crucial role, and its quality directly affects the user's daily ignition experience. According to relevant market statistics, among ignition needles returned due to malfunctions, cracking accounts for nearly 40% of the returns. In-depth analysis reveals that thermal shock is the main cause of ignition needle cracking.

[0003] Therefore, professionals in this field generally use thermal shock equipment to test ignition needles to evaluate whether their quality meets standard requirements. However, most current thermal shock tests on ignition needles are conducted on thermal shock test benches. The significant differences between this testing environment and the actual usage conditions of ignition needles affect the accuracy of the test results, making it impossible to accurately reflect the performance of the ignition needle under real-world conditions. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defect of insufficient accuracy of test results caused by the ignition needle being subjected to thermal shock test on a thermal shock test bench in the prior art, and to provide a thermal shock device for stove ignition needle.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] A thermal shock device for a stove ignition needle, the device comprising a fixing component and a dripping component;

[0007] The fixing assembly includes a first fixing plate, which is an annular plate and is used to be sleeved on the outer periphery of the outer annular mixing chamber. The ignition needle is fixed on the first fixing plate, and the axial direction of the ignition needle and the axial direction of the first fixing plate are both parallel to the vertical direction.

[0008] The dripping assembly includes a guide tube, the inlet of which is used to connect to a water supply device, and the outlet of which is located above the discharge part of the ignition needle. The projection of the outlet of the guide tube toward the ignition needle in the vertical direction at least partially coincides with the discharge part of the ignition needle.

[0009] In this design, the ignition needle is vertically fixed to the outer periphery of the combustion chamber, directly exposing its discharge section to the outer flame area, thus accurately simulating the heating position under actual combustion conditions. The design of the guide tube outlet coinciding with the projection of the discharge section ensures that the cold water dripping path is consistent with the actual condensate / oil dripping path, solving the problem that traditional test benches cannot simulate real hot and cold alternation paths. This makes the application position and direction of temperature shocks more realistic, thereby improving the accuracy of the test.

[0010] Preferably, the dripping assembly further includes a fixing seat, which is annular and sleeved on the outer periphery of the first fixing plate. The lower end of the guide tube is connected to the fixing seat, and the upper end of the guide tube extends above the discharge part of the ignition needle.

[0011] In this design, the mounting bracket is used to support the guide tube, making it easy to fix the position of the guide tube on the cooktop panel.

[0012] Preferably, the fixing component includes a first extension that extends radially outward from the outer peripheral surface of the first fixing plate toward the outer side of the first fixing plate, and an end face of the first extension that is radially away from the first fixing plate abuts against the inner peripheral surface of the fixing seat.

[0013] In this design, the radial distance between the fixed base and the ignition needle is limited by the abutting fit between the end face of the first extension and the inner circumferential surface of the fixed base. This ensures that the relative position of the water outlet of the guide tube and the ignition needle maintains a constant radial distance, preventing the dripping position from shifting due to equipment vibration. Furthermore, it effectively suppresses circumferential displacement caused by combustion vibration during testing, ensuring that no cumulative error in the dripping position occurs during long-term testing.

[0014] Preferably, the fixing assembly further includes a first height adjusting bolt, the first extension is provided with a first height threaded hole, the axis of the first height threaded hole is parallel to the vertical direction, and the first height adjusting bolt is threadedly engaged with the first height threaded hole.

[0015] In this solution, the first height adjustment bolt is used to adjust the height of the first fixing plate relative to the stove panel, thereby adjusting the height position between the discharge part of the ignition needle and the flame, ensuring that the outer flame of the flame accurately burns the designated thermal shock area of ​​the ignition needle, so that the same stove ignition needle thermal shock device can be adapted to different models of ignition needles and burners, thus improving the applicability of the stove ignition needle thermal shock device.

[0016] Preferably, the first fixing plate is provided with a plurality of first ignition needle fixing holes spaced apart along the circumference of the first fixing plate, and the number of the guide tubes is the same as the number of the first ignition needle fixing holes and is provided in a one-to-one correspondence.

[0017] The fixing base is an annular hollow tube, and the lower ends of the plurality of guide tubes are connected to the fixing base. The fixing base is used to connect with the water supply equipment.

[0018] In this design, a ring-shaped hollow tubular mounting base, along with multiple circumferentially distributed guide pipes, constructs a multi-channel independent water supply system. Each guide pipe corresponds to an ignition needle test station. Through the pressure-stabilizing characteristics of the ring-shaped pipe, the flow rate at the outlet of each guide pipe is ensured to be approximately consistent, thus solving the problem of uneven application of cold shock during multi-point testing.

[0019] Preferably, the fixing assembly further includes a second fixing plate, which is an annular plate and is used to be sleeved on the outer periphery of the outer annular mixing chamber. The second fixing plate is coaxial with the first fixing plate and is spaced apart in the vertical direction. The second fixing plate is located above the first fixing plate. The lower end of the ignition needle is connected to the first fixing plate, and the upper end of the ignition needle is connected to the second fixing plate.

[0020] In this design, the double-ring fixing plates form an upper and lower clamping mechanism, establishing at least two constraint points along the entire length of the ignition needle. This improves the stability of the ignition needle's position, ensuring that the discharge part of the ignition needle remains in the designed spatial position during the test. Consequently, it ensures that water droplets can always fall onto the discharge part of the ignition needle during long-term testing, guaranteeing the reliability of the test process.

[0021] Preferably, the fixing assembly further includes a second extension that extends radially inward from the inner circumferential surface of the second fixing plate toward the second fixing plate, and one end face of the second extension that is radially away from the second fixing plate of the first fixing plate is used to abut against the outer circumferential surface of the outer annular mixing chamber.

[0022] In this design, the radial distance between the ignition needle and the outer ring mixing chamber is limited by the contact between the end face of the second extension and the outer peripheral surface of the outer ring mixing chamber. This ensures that the relative position of the outer ring mixing chamber and the ignition needle maintains a constant radial distance, preventing water drip position shifts caused by equipment vibration. Furthermore, it effectively suppresses circumferential displacement caused by combustion vibration during testing, ensuring that no cumulative error occurs in the water drip position during long-term testing.

[0023] Preferably, the fixing assembly further includes a second height adjusting bolt, the second fixing plate is provided with a second height threaded hole, the axis of the second height threaded hole is parallel to the vertical direction, and the second height adjusting bolt is threadedly engaged with the second height threaded hole.

[0024] In this solution, the second height adjusting bolt is used to adjust the relative height between the first fixing plate and the second fixing plate to accommodate ignition needles of different heights and sizes, thereby improving the applicability of the stove ignition needle thermal shock device.

[0025] Preferably, the fixing component includes a first fastening bolt, the first fixing plate is provided with a first fastening threaded hole, the second fixing plate is provided with a second fastening threaded hole, the first fastening threaded hole and the second fastening threaded hole are coaxial and parallel to the vertical direction, and the first fastening bolt passes through the first fastening threaded hole and the second fastening threaded hole.

[0026] In this solution, the relative position between the first fixing plate and the second fixing plate is fixed by the first fastening bolt.

[0027] Preferably, the first fixing plate is provided with a first ignition needle fixing hole for the ignition needle to pass through, and the second fixing plate is provided with a second ignition needle fixing hole for the ignition needle to pass through. The first ignition needle fixing hole and the second ignition needle fixing hole are coaxial and parallel to the vertical direction.

[0028] The fixing assembly further includes a second fastening bolt, and the first fixing plate is provided with a third fastening threaded hole. The axis of the third fastening threaded hole is parallel to the radial direction of the first fixing plate. One end of the third fastening threaded hole passes through the first ignition needle fixing hole, and the other end of the third fastening threaded hole passes through the outer peripheral surface of the first fixing plate; and / or, the fixing assembly further includes a third fastening bolt, and the second fixing plate is provided with a fourth fastening threaded hole. The axis of the fourth fastening threaded hole is parallel to the radial direction of the first fixing plate. One end of the fourth fastening threaded hole passes through the second ignition needle fixing hole, and the other end of the fourth fastening threaded hole passes through the outer peripheral surface of the second fixing plate.

[0029] In this design, the radial fastening bolt and the ignition needle fixing hole form a three-point clamping mechanism, and the clamping stability is ensured by the contact between the bolt end and the cylindrical surface of the ignition needle.

[0030] The significant advantages of this invention are as follows: By vertically fixing the ignition needle to the outer periphery of the burner's outer ring mixing chamber, the discharge portion of the ignition needle is directly exposed to the outer flame area, accurately simulating the heating position under actual combustion conditions. The design of aligning the water outlet of the guide pipe with the projection of the discharge portion ensures that the path of cold water dripping is consistent with the actual path of condensate / oil dripping during use. This solves the problem that traditional test benches cannot simulate the actual hot and cold alternation path, making the application position and direction of temperature shock more realistic, thereby improving the accuracy of the test. Attached Figure Description

[0031] Figure 1 This is a three-dimensional structural diagram of a stove ignition needle thermal shock device according to an embodiment of the present invention.

[0032] Figure 2This is a side view of the thermal shock device for a stove ignition needle according to an embodiment of the present invention.

[0033] Figure 3 This is a three-dimensional structural diagram of a fixing component according to an embodiment of the present invention.

[0034] Figure 4 This is a three-dimensional structural diagram of the stove ignition needle thermal shock device and the stove in accordance with an embodiment of the present invention.

[0035] Explanation of reference numerals in the attached figures:

[0036] First fixing plate 1

[0037] Second fixing plate 2

[0038] First fastening bolt 31

[0039] First fastening threaded hole 32

[0040] Second fastening threaded hole 33

[0041] Third fastening bolt 41

[0042] Fourth fastening threaded hole 42

[0043] Second height adjustment bolt 51

[0044] Second height threaded hole 52

[0045] Third height threaded hole 53

[0046] First ignition needle fixing hole 61

[0047] Second ignition needle fixing hole 62

[0048] Flow guide tube 71

[0049] Fixture 72

[0050] Ignition needle 8

[0051] Discharge section 81

[0052] First extension 91

[0053] Second extension 92

[0054] 100 outer ring mixing chamber

[0055] First height adjustment bolt 111

[0056] First height threaded hole 112

[0057] Stove panel 120 Detailed Implementation

[0058] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0059] like Figures 1-4 As shown in the figure, this embodiment discloses a thermal shock device for stove ignition needles, which is used to conduct thermal shock experiments on ignition needles 8 in order to test the quality of ignition needles 8.

[0060] Specifically, such as Figures 1-4 As shown, the thermal shock device for the ignition needle of the stove includes a fixing component and a dripping component. The fixing component is used to fix the ignition needle 8, and the dripping component is used to drip water onto the ignition needle 8.

[0061] like Figures 1-4 As shown, the fixing assembly includes a first fixing plate 1, a second fixing plate 2, a first fastening bolt 31, a third fastening bolt 41, and a second height adjusting bolt 51.

[0062] like Figures 1-4 As shown, the first fixing plate 1 and the second fixing plate 2 are both annular plates and are sleeved on the outer periphery of the outer annular mixing chamber 100. The first fixing plate 1 and the second fixing plate 2 are coaxial and their axes are parallel to the vertical direction. The first fixing plate 1 and the second fixing plate 2 are spaced apart in the vertical direction. The second fixing plate 2 is located above the first fixing plate 1. The lower end of the ignition needle 8 is connected to the first fixing plate 1, and the upper end of the ignition needle 8 is connected to the second fixing plate 2. The axial direction of the ignition needle 8 is parallel to the axial direction of the first fixing plate 1.

[0063] In this embodiment, the first fixing plate 1 and the second fixing plate 2 constitute an upper and lower clamping mechanism, establishing at least two constraint points along the entire length of the ignition needle 8, thereby improving the stability of the position of the ignition needle 8 and ensuring that the discharge part 81 of the ignition needle 8 remains in the designed spatial position during the test. This ensures that water droplets can always fall onto the discharge part 81 of the ignition needle 8 during long-term testing, thus guaranteeing the reliability of the test process.

[0064] Among them, such as Figure 3 As shown, the first fixing plate 1 and the second fixing plate 2 are fixedly connected to ensure the stability of their relative positions. Specifically, the first fixing plate 1 is provided with a first fastening threaded hole 32, and the second fixing plate 2 is provided with a second fastening threaded hole 33. The first fastening threaded hole 32 and the second fastening threaded hole 33 are coaxial and parallel to the vertical direction. The first fastening bolt 31 passes through the first fastening threaded hole 32 and the second fastening threaded hole 33 to fix the relative position between the first fixing plate 1 and the second fixing plate 2.

[0065] Furthermore, such as Figure 3As shown, the vertical spacing between the first fixing plate 1 and the second fixing plate 2 is adjustable to accommodate ignition needles 8 of different heights, thus improving the applicability of the thermal shock device for stove ignition needles. Specifically, the second fixing plate 2 is provided with a second height threaded hole 52, the upper end of which is closed and the lower end is open. The first fixing plate 1 is provided with a third height threaded hole 53, which is through at both ends in the vertical direction. The second height threaded hole 52 and the third height threaded hole 53 are coaxial, and their axes are both parallel to the vertical direction. The second height adjusting bolt 51 passes through the third height threaded hole 53 and the second height threaded hole 52 from bottom to top. By rotating the second height adjusting bolt 51, the vertical spacing between the first fixing plate 1 and the second fixing plate 2 can be changed.

[0066] In other alternative embodiments, the through hole on the first fixing plate 1 for the second height adjusting bolt 51 to pass through can also be a smooth hole. Alternatively, the second height adjusting bolt 51 may not pass through the first fixing plate 1, but its lower end may directly abut against the cooktop panel 120.

[0067] Furthermore, such as Figure 3 As shown, the first fixing plate 1 has a first ignition needle fixing hole 61 through which the ignition needle 8 passes, and the second fixing plate 2 has a second ignition needle fixing hole 62 through which the ignition needle 8 passes. The first ignition needle fixing hole 61 and the second ignition needle fixing hole 62 are coaxial and parallel to the vertical direction. The lower end of the ignition needle 8 passes through the first ignition needle fixing hole 61, and the upper end of the ignition needle 8 passes through the second ignition needle fixing hole 62.

[0068] Furthermore, such as Figure 3 As shown, the second fixing plate 2 is provided with a fourth fastening threaded hole 42. The axis of the fourth fastening threaded hole 42 is parallel to the radial direction of the first fixing plate 1. One end of the fourth fastening threaded hole 42 extends through the second ignition needle fixing hole 62, and the other end of the fourth fastening threaded hole 42 extends through the outer peripheral surface of the second fixing plate 2. The third fastening bolt 41 is inserted into the fourth fastening threaded hole 42 from the outer peripheral side of the second fixing plate 2 until the end of the third fastening bolt 41 extending into the second ignition needle fixing hole 62 abuts against the outer peripheral surface of the ignition needle 8, thereby fixing the position of the ignition needle 8 relative to the first fixing plate 1 and the second fixing plate 2. In this embodiment, the radial fastening bolt (i.e., the third fastening bolt 41) and the second ignition needle fixing hole 62 form a three-point clamping mechanism. The contact between the bolt end and the cylindrical surface of the ignition needle 8 ensures the clamping stability.

[0069] In other alternative embodiments, a third fastening threaded hole may be further provided on the first fixing plate 1. The axis of the third fastening threaded hole is parallel to the radial direction of the first fixing plate 1. One end of the third fastening threaded hole extends through the first ignition needle fixing hole 61, and the other end extends through the outer peripheral surface of the first fixing plate 1. The second fastening bolt engages with the threaded hole of the third fastening threaded hole, causing the second fastening bolt to abut against the outer peripheral surface of the ignition needle 8, thereby fixing the position of the ignition needle 8 relative to the first fixing plate 1 and the second fixing plate 2. Alternatively, the third fastening threaded hole may be provided only on the first fixing plate 1, without providing the fourth fastening threaded hole 42 on the second fixing plate 2.

[0070] Furthermore, such as Figures 1-3 As shown, the fixing assembly can simultaneously fix multiple ignition needles 8 to achieve simultaneous thermal shock testing on multiple ignition needles 8, thereby improving testing efficiency. Specifically, the first fixing plate 1 is provided with multiple first ignition needle fixing holes 61 spaced apart along the circumference of the first fixing plate 1, and the second fixing plate 2 is provided with multiple second ignition needle fixing holes 62 spaced apart along the circumference of the first fixing plate 1. The number of first ignition needle fixing holes 61 and second ignition needle fixing holes 62 are the same and they are arranged in a one-to-one correspondence. Each set of first ignition needle fixing holes 61 and second ignition needle fixing holes 62 can fix one ignition needle 8.

[0071] The spacing between the multiple ignition needles 8 in the circumferential direction of the first fixed plate 1 can be set according to the formation of the flame cap to ensure that each ignition needle 8 can face the flame directly.

[0072] In other alternative implementations, the fixing component may also consist of only the first fixing plate 1 to fix the ignition needle 8.

[0073] like Figure 1 and Figure 2 As shown, the drip assembly includes a guide pipe 71 and a fixing base 72. The fixing base 72 is annular and sleeved on the outer periphery of the first fixing plate 1. The lower end of the guide pipe 71 is connected to the fixing base 72, and the upper end of the guide pipe 71 extends above the discharge part 81 of the ignition needle 8. The fixing base 72 is used to support the guide pipe 71, facilitating the fixing of the guide pipe 71 on the stove panel 120. The inlet of the guide pipe 71 is connected to the water supply equipment, and the outlet of the guide pipe 71 is located above the discharge part 81 of the ignition needle 8. The projection of the outlet of the guide pipe 71 in the vertical direction toward the ignition needle 8 at least partially coincides with the discharge part 81 of the ignition needle 8 (i.e., the top of the ignition needle 8).

[0074] Specifically, such as Figure 2As shown, in this embodiment, the outlet of the guide tube 71 is located directly above the discharge portion 81 of the ignition needle 8, thereby ensuring that the water droplets dripping from the outlet of the guide tube 71 can completely cover the discharge portion 81 of the ignition needle 8, ensuring that the discharge portion 81 of the ignition needle 8 is sufficiently cooled. In other alternative embodiments, the outlet of the guide tube 71 may also be slightly offset radially from directly above the discharge portion 81 of the ignition needle 8, at least ensuring that the water droplets dripping from the outlet of the guide tube 71 can fall on the discharge portion 81 of the ignition needle 8.

[0075] like Figure 1 and Figure 2 As shown, there are multiple guide tubes 71, and the number of guide tubes 71 is the same as the number of the first ignition needle fixing holes 61, and they are set one-to-one, that is, each ignition needle 8 corresponds to one guide tube 71. Further, the fixing seat 72 is an annular hollow tube, and the lower ends of the multiple guide tubes 71 are connected to the fixing seat 72, which is used to connect to the water supply equipment. In this embodiment, the annular hollow tubular fixing seat 72, together with the multiple circumferentially distributed guide tubes 71, constructs a multi-channel independent water supply system. Each guide tube 71 corresponds to one ignition needle 8 test station. Through the pressure stabilizing characteristics of the annular pipe, it is ensured that the outlet flow of each guide tube 71 is approximately the same, solving the problem of uneven cold shock application during multi-point testing.

[0076] In other alternative implementations, each guide pipe 71 may also be independently connected to the water supply equipment, and the fixing seat 72 serves only as a fixing device.

[0077] In this embodiment, the ignition needle 8 is vertically fixed to the outer periphery of the outer ring mixing chamber 100 of the burner, so that the discharge part 81 of the ignition needle 8 is directly exposed to the outer flame area, accurately simulating the heated position under actual combustion conditions. The design of the water outlet of the guide pipe 71 and the projection of the discharge part 81 coincides, ensuring that the path of cold water dripping is consistent with the path of condensate / oil dripping in actual use. This solves the problem that traditional test benches cannot simulate the actual hot and cold alternation path, making the application position and direction of temperature shock more realistic, thereby improving the accuracy of the test.

[0078] Furthermore, such as Figure 1 , Figure 3 and Figure 4 As shown, the fixing component also includes a first extension 91 and a second extension 92.

[0079] like Figure 1As shown, the first extension 91 extends radially outward from the outer peripheral surface of the first fixing plate 1, and one end face of the first extension 91, radially away from the first fixing plate 1, abuts against the inner peripheral surface of the fixing seat 72. In this embodiment, the abutting fit between the end face of the first extension 91 and the inner peripheral surface of the fixing seat 72 limits the radial distance between the fixing seat 72 and the ignition needle 8, ensuring a constant radial distance between the water outlet of the guide pipe 71 and the ignition needle 8, thus preventing water dripping position shift due to equipment vibration. Furthermore, it effectively suppresses circumferential displacement caused by combustion vibration during testing, ensuring no cumulative error in the water dripping position during long-term testing.

[0080] like Figure 3 and Figure 4 As shown, the second extension 92 extends radially inward from the inner circumferential surface of the second fixing plate 2. One end face of the second extension 92, radially away from the second fixing plate 2, is used to abut against the outer circumferential surface of the outer annular mixing chamber 100. In this embodiment, the abutment between the end face of the second extension 92 and the outer circumferential surface of the outer annular mixing chamber 100 defines the radial distance between the ignition needle 8 and the outer annular mixing chamber 100, maintaining a constant radial distance between the outer annular mixing chamber 100 and the ignition needle 8, thus preventing water dripping position shift due to equipment vibration. Furthermore, it effectively suppresses circumferential displacement caused by combustion vibration during testing, ensuring that the water dripping position does not accumulate errors during long-term testing.

[0081] Furthermore, such as Figure 2 and Figure 4 As shown, the fixing assembly also includes a first height adjusting bolt 111, which is used to adjust the height of the first fixing plate 1 relative to the stove panel 120, thereby adjusting the height position between the discharge part 81 of the ignition needle 8 and the flame, ensuring that the outer flame of the flame accurately burns the designated thermal shock area of ​​the ignition needle 8, so that the same stove ignition needle thermal shock device can be adapted to different models of ignition needle 8 and burners, thus improving the applicability of the stove ignition needle thermal shock device.

[0082] Specifically, the first extension 91 is provided with a first height threaded hole 112, the axis of the first height threaded hole 112 is parallel to the vertical direction, the lower end of the first height threaded hole 112 is open, the upper end of the first height adjusting bolt 111 is threadedly engaged with the first height threaded hole 112, and the lower end of the first height adjusting bolt 111 abuts against the upper surface of the cooktop panel 120. The position height of the first fixing plate 1 relative to the cooktop panel 120 can be adjusted by rotating the first height adjusting bolt 111.

[0083] In other alternative embodiments, if the radial dimension of the first fixing plate 1 is large enough, the first height threaded hole 112 can also be directly provided on the first fixing plate 1.

[0084] This embodiment also provides a method for thermal shock testing of the stove ignition needle 8, specifically:

[0085] With the stove ignition needle thermal shock device and ignition needle 8 assembled, place the assembly on the stove panel 120 and ignite the burner.

[0086] After burning for 15 minutes, turn off the flame and turn on the water supply to drip water onto the ignition needle 8. The total amount of water dripped onto a single ignition needle 8 should be 15 ml at a time. After dripping, observe whether the ignition needle 8 shows any cracks. If the ignition needle 8 shows cracks, end the experiment. If the ignition needle 8 does not show cracks, repeat the above steps to conduct the experiment again. Before starting a new round of experiments, wait for the ignition needle 8 to cool down, and also allow the water dripped onto the ignition needle 8 to dry.

[0087] If the ignition needle 8 cracks after fewer than 6 tests, it indicates that the quality of the ignition needle 8 is substandard. If the ignition needle 8 cracks after 6 to 8 tests, it indicates that the quality of the ignition needle 8 is average and barely acceptable. If the ignition needle 8 cracks after more than 8 tests, it indicates that the quality of the ignition needle 8 is very good and meets the quality standards.

[0088] In other alternative implementations, in the thermal shock test method, the burner's combustion time and the amount of water dripping in a single test can be adjusted based on the experience of those skilled in the art.

[0089] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown by the device or component during normal use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0090] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model 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 this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A cold and hot shock device for a stove igniter pin, characterized in that, The thermal shock device for the stove ignition needle includes a fixing component and a dripping component; The fixing assembly includes a first fixing plate, which is an annular plate and is used to be sleeved on the outer periphery of the outer annular mixing chamber. The ignition needle is fixed on the first fixing plate, and the axial direction of the ignition needle and the axial direction of the first fixing plate are both parallel to the vertical direction. The dripping assembly includes a guide tube, the inlet of which is used to connect to a water supply device, and the outlet of which is located above the discharge part of the ignition needle. The projection of the outlet of the guide tube toward the ignition needle in the vertical direction at least partially coincides with the discharge part of the ignition needle.

2. The cold and heat shock apparatus for igniting needle of a cooking range according to claim 1, wherein The dripping assembly also includes a fixing base, which is annular and sleeved on the outer periphery of the first fixing plate. The lower end of the guide tube is connected to the fixing base, and the upper end of the guide tube extends above the discharge part of the ignition needle.

3. The cold and heat shock apparatus for igniting needle of a cooking range according to claim 2, wherein The fixing component includes a first extension that extends radially outward from the outer peripheral surface of the first fixing plate, and an end face of the first extension that is radially away from the first fixing plate abuts against the inner peripheral surface of the fixing seat.

4. The cold and heat shock apparatus for igniting needle of a cooking range according to claim 3, wherein The fixing component further includes a first height adjusting bolt, and the first extension is provided with a first height threaded hole. The axis of the first height threaded hole is parallel to the vertical direction, and the first height adjusting bolt is threadedly engaged with the first height threaded hole.

5. The cold and heat shock apparatus for igniting needle of a cooking range according to claim 2, wherein The first fixing plate is provided with a plurality of first ignition needle fixing holes spaced apart along the circumference of the first fixing plate, and the number of the guide tubes is the same as the number of the first ignition needle fixing holes and is arranged in a one-to-one correspondence. The fixing base is an annular hollow tube, and the lower ends of the plurality of guide tubes are connected to the fixing base. The fixing base is used to connect with the water supply equipment.

6. The cold and heat shock apparatus for igniter pins of a cooking hob according to claim 1, characterized in that, The fixing assembly further includes a second fixing plate, which is an annular plate and is used to be sleeved on the outer periphery of the outer annular mixing chamber. The second fixing plate is coaxial with the first fixing plate and is spaced apart in the vertical direction. The second fixing plate is located above the first fixing plate. The lower end of the ignition needle is connected to the first fixing plate, and the upper end of the ignition needle is connected to the second fixing plate.

7. The cold and heat shock apparatus for igniting needle of a cooking range according to claim 6, wherein The fixing assembly further includes a second extension that extends radially inward from the inner circumferential surface of the second fixing plate toward the second fixing plate, and one end face of the second extension that is radially away from the second fixing plate of the first fixing plate is used to abut against the outer circumferential surface of the outer annular mixing chamber.

8. The cold and heat shock apparatus for igniting needle of a cooking range according to claim 6, wherein The fixing assembly also includes a second height adjusting bolt. The second fixing plate is provided with a second height threaded hole. The axis of the second height threaded hole is parallel to the vertical direction. The second height adjusting bolt is threadedly engaged with the second height threaded hole.

9. The cold and heat shock apparatus for igniting needle of a cooking range according to claim 6, wherein The fixing assembly includes a first fastening bolt, a first fastening threaded hole on the first fixing plate, and a second fastening threaded hole on the second fixing plate. The first fastening threaded hole and the second fastening threaded hole are coaxial and parallel to the vertical direction, and the first fastening bolt passes through the first fastening threaded hole and the second fastening threaded hole.

10. The cold and heat shock apparatus for igniting needle of a cooking range according to claim 6, wherein The first fixing plate is provided with a first ignition needle fixing hole for the ignition needle to pass through, and the second fixing plate is provided with a second ignition needle fixing hole for the ignition needle to pass through. The first ignition needle fixing hole and the second ignition needle fixing hole are coaxial and parallel to the vertical direction. The fixing assembly further includes a second fastening bolt, and the first fixing plate is provided with a third fastening threaded hole. The axis of the third fastening threaded hole is parallel to the radial direction of the first fixing plate. One end of the third fastening threaded hole passes through the first ignition needle fixing hole, and the other end of the third fastening threaded hole passes through the outer peripheral surface of the first fixing plate; and / or, the fixing assembly further includes a third fastening bolt, and the second fixing plate is provided with a fourth fastening threaded hole. The axis of the fourth fastening threaded hole is parallel to the radial direction of the first fixing plate. One end of the fourth fastening threaded hole passes through the second ignition needle fixing hole, and the other end of the fourth fastening threaded hole passes through the outer peripheral surface of the second fixing plate.

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