CN221197470U - Dry burning prevention probe and gas stove comprising same - Google Patents

Abstract

The utility model provides a dry-burning prevention probe and a gas stove comprising the same, wherein the dry-burning prevention probe comprises a contact type temperature measuring device, the contact type temperature measuring device comprises a temperature measuring part and a first fixing part, the temperature measuring part can move in a telescopic manner relative to the first fixing part, the dry-burning prevention probe further comprises a non-contact type temperature measuring device, the non-contact type temperature measuring device comprises a non-contact type temperature measuring unit and a second fixing part, the first fixing part is connected with the second fixing part, and the height of the non-contact type temperature measuring unit is lower than that when the temperature measuring part moves to the lowest point. According to the utility model, the temperature measuring mode of the contact type temperature measuring device and the non-contact type temperature measuring device is combined, and when the contact type temperature measuring device cannot accurately measure the temperature of the pan bottom due to the conditions of concave and uneven pan bottom storage, the non-contact type temperature measuring device continues to measure the temperature. The utility model improves the accuracy of temperature measurement, reduces the possibility of misjudgment of dry combustion and ensures the safety of the kitchen range in the use process.

Description

Dry burning prevention probe and gas stove comprising same

Technical Field

The utility model relates to the field of gas stoves, in particular to an anti-dry-burning probe.

Background

In daily life, people often have something and forget to turn off fire in time when using the gas-cooker to cook, and then lead to the pot to be burnt dry to arouse the emergence of conflagration, in order to avoid the emergence of dry burning phenomenon, among the prior art, can install the dry burning prevention probe additional in the gas-cooker, among the prior art, for example the temperature control probe that CN216431818U recorded generally all adopts the contact type temperature measurement probe, and the temperature measurement subassembly of probe can be along with the pressure expansion of bottom of a boiler, through the effective contact of probe and bottom of a boiler, measures the temperature of bottom of a boiler, when bottom of a boiler temperature is too high, then judge to appear dry burning phenomenon. However, the contact type probe relies on the close contact of the probe and the pan bottom, if the pan bottom is concave, uneven or blocked by logo, the probe cannot be in close contact with the pan bottom, meanwhile, the temperature of the outer side wall of the temperature measurement probe is influenced by flame heat radiation and high-temperature smoke heat convection, the temperature is easy to be overhigh, the accuracy of temperature measurement of a temperature measurement part on the temperature measurement probe is influenced, the misjudgment is caused, dry burning phenomenon is caused, and although the interference of part of high-temperature smoke to the probe can be avoided by a mode of heightening a protective ring on an inner ring fire cover, the problem is not fundamentally solved.

Disclosure of utility model

The utility model aims to overcome the defects of the prior art and provides an anti-dry combustion probe and a gas stove comprising the same.

The utility model solves the technical problems by the following technical scheme: the utility model provides a prevent dry combustion method probe, includes contact temperature measuring device, contact temperature measuring device includes temperature measuring part and first fixed part, temperature measuring part for but first fixed part telescopic movement, prevent dry combustion method probe still includes non-contact temperature measuring device, non-contact temperature measuring device includes non-contact temperature measuring unit and second fixed part, first fixed part with second fixed part is connected, non-contact temperature measuring unit's height is less than when temperature measuring part removes to the minimum.

In this scheme, adopt above-mentioned structural style, set up contact temperature measuring device and non-contact temperature measuring device simultaneously, contact temperature measuring device includes temperature measuring part and first fixed part, and temperature measuring part is scalable removal for first fixed part, when the pot is placed on the top of a kitchen range, temperature measuring part and the bottom of a boiler contact on the contact temperature measuring device, because temperature measuring part can stretch out and draw back the removal, guaranteed temperature measuring part and bottom of a boiler contact all the time. Meanwhile, the height of the non-contact temperature measuring device is lower than the lowest point of the contact temperature measuring device moving in the telescopic direction, so that the non-contact temperature measuring device on the dry-heating preventing probe is not affected all the time in the process of downwards compressing the telescopic height of the temperature measuring part by the pot. When the pot is taken away, the temperature measuring part restores the original height, and when the temperature of the pot body rises, the radiation can be outwards scattered, and the non-contact temperature measuring device receives the radiation and feeds back the temperature of the temperature field, so that the influence of the shape of the pot bottom is avoided. If the pan bottom is uneven or concave, the temperature measuring part cannot be in close contact with the pan bottom and is influenced by flame heat radiation and high-temperature smoke heat convection, so that the temperature of the pan bottom cannot be accurately measured, and the non-contact temperature measuring device can further measure the temperature of the temperature field. The utility model combines the temperature measuring principles of the contact temperature measuring device and the non-contact temperature measuring device, improves the accuracy of temperature measurement, reduces the possibility of misjudgment of dry combustion, and ensures the safety of the kitchen range in the use process.

Further, the first fixed part is the dead lever, contact temperature measuring device still includes elastomeric element, the upper end of dead lever is provided with the backup pad, elastomeric element one end supports and is in backup pad upper surface, the other end with temperature measuring part supports.

In the scheme, the fixing rod is used for fixing the dry burning prevention probe, and the fixing rod is convenient to install on the gas stove. The elastic component can drive the temperature measurement portion to stretch out and draw back, and its one end supports and leans on backup pad upper surface, and the other end and temperature measurement portion bottom contact, and temperature measurement portion compression elastic component and downward displacement when preventing dry combustion method probe receives the pressure of pot to this guarantees contact temperature measuring device and bottom of the pot contact all the time.

Further, the temperature measuring part further comprises a wire, the temperature measuring part comprises a heat collecting plate and a heat-sensitive piece, a heat-sensitive piece accommodating cavity is formed in the lower surface of the heat collecting plate, and the heat-sensitive piece is arranged in the heat-sensitive piece accommodating cavity.

In the scheme, the elastic component provides the heat collecting plate with the elastic force vertically upwards, the heat-sensitive piece is arranged in the heat-sensitive piece accommodating cavity, after the heat collecting plate is contacted with the pot, the heat of the pot is transferred to the heat collecting plate, and the heat collecting plate transfers the heat to the heat-sensitive piece in the heat-sensitive piece accommodating cavity.

Further, the temperature measuring part further comprises a wire, and the wire penetrates through the fixing rod and is electrically connected with the thermosensitive piece.

Further, the temperature measuring part further comprises a shell, the shell is sleeved on the peripheral surface of the fixing rod, an upper folded edge is arranged at the upper end of the shell, a lower folded edge is arranged on the lower surface of the heat collecting plate, and the upper folded edge and the lower folded edge are buckled to limit the relative displacement of the shell and the heat collecting plate.

In this scheme, adopt above-mentioned structural style, the casing cover is located the dead lever outer peripheral face, and then the casing is fixed relatively for the radial position of dead lever, can not take place great skew in the radial direction of dead lever, can not be after carrying out big action operations such as top pot to the pan promptly for prevent dry combustion method probe keep away from the bottom of a boiler center, the last hem of casing and the lower hem looks lock of heat collecting plate make the casing also can reciprocate for the dead lever, and can not break away from mutually with the heat collecting plate.

Further, the non-contact temperature measuring unit is an infrared temperature measuring unit.

In the scheme, the infrared temperature measuring unit is used as a non-contact temperature measuring unit, when the cooking bench works, the temperature of the pan bottom rises to further emit infrared radiation, and the infrared temperature measuring device receives the radiation and judges the temperature of the pan bottom accordingly. And because the infrared temperature measuring unit is non-contact, the accuracy of temperature measurement of the infrared temperature measuring unit is not influenced by the shape of the bottom of the pan.

Further, the first fixed part is a fixed rod, a baffle ring is arranged on the outer peripheral surface of the fixed rod, the second fixed part is sleeved outside the fixed rod, and the baffle ring is abutted to the bottom of the second fixed part to support the second fixed part.

In the scheme, the baffle ring on the outer peripheral surface of the fixed rod provides support for the second fixing part, the non-contact temperature measuring device is fixed on the second fixing part, and the height of the non-contact temperature measuring device is guaranteed to be unchanged all the time by the second fixing part arranged on the fixed rod. And the second fixing part is sleeved on the outer side of the fixing rod, so that the non-contact temperature measuring device is convenient to install and detach, and the later maintenance is simple.

Further, the non-contact temperature measuring unit is circumferentially arranged at the periphery of the contact temperature measuring device.

In the scheme, the non-contact temperature measuring unit is circumferentially arranged on the periphery of the contact temperature measuring device, so that the temperature of a circle near the bottom of the pot can be uniformly detected.

Further, the second fixing portion is of an annular structure, wherein the non-contact temperature measuring unit is arranged on the upper surface of the second fixing portion, and a cavity is formed in the second fixing portion.

In this scheme, adopt above-mentioned structural style, the second fixed part is the fixed non-contact temperature measuring device that is annular setting in contact temperature measuring device periphery that annular structure can be better, and the second fixed part cover is established on the dead lever and inside has the cavity and also can isolate the heat conduction of a considerable part to first fixed part and then influence the temperature measuring part that sets up on first fixed part.

The utility model also provides a gas stove, which is provided with the dry burning prevention probe according to any one of the embodiments.

On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the utility model.

The utility model has the positive progress effects that: simultaneously set up contact temperature measuring device and non-contact temperature measuring device, contact temperature measuring device includes temperature measuring part and first fixed part, and temperature measuring part is scalable removal for first fixed part, when the pot was placed on the top of a kitchen range, temperature measuring part and the bottom of a boiler contact on the contact temperature measuring device, because temperature measuring part can flexible removal, guaranteed temperature measuring part and bottom of a boiler contact all the time. Meanwhile, the height of the non-contact temperature measuring device is lower than the lowest point of the contact temperature measuring device moving in the telescopic direction, so that the non-contact temperature measuring device on the dry-heating preventing probe is not affected all the time in the process of downwards compressing the telescopic height of the temperature measuring part by the pot. When the pot is taken away, the temperature measuring part restores the original height, and when the temperature of the pot body rises, the radiation can be outwards scattered, and the non-contact temperature measuring device receives the radiation and feeds back the temperature of the temperature field, so that the influence of the shape of the pot bottom is avoided. If the pan bottom is uneven or concave, the temperature measuring part cannot be in close contact with the pan bottom and is influenced by flame heat radiation and high-temperature smoke heat convection, so that the temperature of the pan bottom cannot be accurately measured, and the non-contact temperature measuring device can further measure the temperature of the temperature field. The utility model combines the temperature measuring principles of the contact temperature measuring device and the non-contact temperature measuring device, improves the accuracy of temperature measurement, reduces the possibility of misjudgment of dry combustion, and ensures the safety of the kitchen range in the use process.

Drawings

Fig. 1 is a schematic perspective view of a dry-fire preventing probe according to a preferred embodiment of the utility model.

Fig. 2 is a schematic front view of a dry-fire preventing probe according to a preferred embodiment of the present utility model.

Fig. 3 is a cross-sectional view A-A of fig. 2.

Fig. 4 is a partial enlarged view of a region B of fig. 3.

Fig. 5 is a flowchart of the controller of the gas stove according to the preferred embodiment of the present utility model for judging whether the dry burning phenomenon occurs.

Contact type temperature measuring device 1

Temperature measuring part 11

Heat collecting plate 111

Thermosensitive element accommodating chamber 1111

Lower hem 1112

Thermosensitive member 112

Housing 113

Upper flange 1131

Insulation layer 1132

Wire 114

First fixing portion (or fixing rod) 12

Support plate 121

Elastic member 13

Non-contact temperature measuring device 2

Non-contact temperature measuring unit 21

Second fixing portion 22

Baffle ring 221

Cavity 221

Detailed Description

The present utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments are shown.

Example 1

As shown in fig. 1 and 2, a dry-burning prevention probe comprises a contact type temperature measuring device 1, wherein the contact type temperature measuring device 1 comprises a temperature measuring part 11 and a first fixing part 12, the temperature measuring part 11 can move telescopically relative to the first fixing part 12, the dry-burning prevention probe further comprises a non-contact type temperature measuring device 2, the non-contact type temperature measuring device 2 comprises a non-contact type temperature measuring unit 21 and a second fixing part 22, the first fixing part 12 is connected with the second fixing part 22, and the height of the non-contact type temperature measuring unit 21 is lower than that when the temperature measuring part 11 moves to the lowest point. In the present embodiment, the contact temperature measuring device 1 is an NTC thermistor temperature measuring device, but of course, in other embodiments, other contact temperature measuring devices may be used. The thermistor has negative temperature resistance, when the temperature rises, the resistance of the thermistor is reduced, and the passing current is increased, so that the NTC thermistor temperature measuring device can indirectly measure the temperature through measuring the loop current. In this embodiment, the non-contact temperature measuring unit 21 is an infrared non-contact temperature measuring unit 21, the infrared non-contact temperature measuring unit 21 is used as a non-contact temperature measuring unit 21, when the cooking bench works, the temperature of the pan bottom rises to further emit infrared radiation, and the infrared non-contact temperature measuring unit 21 receives the radiation and judges the temperature of the pan bottom according to the radiation. And because the infrared non-contact temperature measuring unit 21 is non-contact, the accuracy of temperature measurement of the infrared non-contact temperature measuring unit 21 is not affected by the shape of the pan bottom. Of course, in other embodiments, other contact temperature measuring units, such as ultraviolet temperature measuring probes, are also possible.

Simultaneously set up contact temperature measuring device 1 and non-contact temperature measuring device 2, contact temperature measuring device 1 includes temperature measuring part 11 and first fixed part 12, and temperature measuring part 11 is scalable removal for first fixed part 12, and when the pot was placed on the top of a kitchen range, temperature measuring part 11 and the bottom of a boiler contacted on contact temperature measuring device 1, because temperature measuring part 11 can stretch out and draw back the removal, guaranteed temperature measuring part 11 and bottom of a boiler contact all the time. Meanwhile, the height of the non-contact temperature measuring device 2 is lower than the lowest point of the contact temperature measuring device 1 moving in the telescopic direction, so that the non-contact temperature measuring device 2 on the dry-heating preventing probe is not affected all the time in the process of downwards compressing the telescopic height of the temperature measuring part 11. When the pot is taken away, the temperature measuring part 11 restores the original height, and when the pot body temperature rises, radiation can be outwards scattered, and the non-contact temperature measuring device 2 receives the radiation and feeds back the temperature of the temperature field, so that the influence of the shape of the pot bottom is avoided. If the bottom of the pan is uneven or concave, the temperature measuring part 11 cannot be in close contact with the bottom of the pan and is influenced by flame heat radiation and high-temperature smoke heat convection, so that the temperature of the bottom of the pan cannot be accurately measured, and the non-contact temperature measuring device 2 can further measure the temperature of the temperature field. The utility model combines the temperature measuring principles of the contact type temperature measuring device 1 and the non-contact type temperature measuring device 2, improves the accuracy of temperature measurement, reduces the possibility of misjudgment of dry combustion, and ensures the safety of the kitchen range in the use process.

In addition, the first fixing portion 12 is a fixing rod 12, the contact temperature measuring device 1 further includes an elastic member 13, a support plate 121 is disposed at an upper end of the fixing rod 12, one end of the elastic member 13 abuts against an upper surface of the support plate 121, and the other end abuts against the temperature measuring portion 11. The fixed rod 12 is used for fixing the dry burning prevention probe, and the structure of the fixed rod 12 is convenient to install on a gas stove. The elastic component 13 can drive the temperature measuring part 11 to stretch out and draw back, one end of the elastic component is propped against the upper surface of the supporting plate 121, the other end of the elastic component is contacted with the bottom of the temperature measuring part 11, and when the dry-heating prevention probe is subjected to the pressure of the pot, the temperature measuring part 11 compresses the elastic component 13 and moves downwards, so that the contact type temperature measuring device 1 is always contacted with the bottom of the pot.

As shown in fig. 3 and 4, the temperature measuring part 11 includes a heat collecting plate 111 and a heat sensitive member 112, a heat sensitive member receiving chamber 1111 is provided at a lower surface of the heat collecting plate 111, and the heat sensitive member 112 is provided in the heat sensitive member receiving chamber 1111. The elastic member 13 provides the heat collecting plate 111 with an elastic force in a vertical upward direction, the heat sensitive member 112 is disposed in the heat sensitive member receiving chamber 1111, and after the heat collecting plate 111 contacts the pan, heat of the pan is transferred to the heat collecting plate 111, and the heat collecting plate 111 transfers heat to the heat sensitive member 112 disposed in the heat sensitive member receiving chamber 1111.

The temperature measuring part 11 further includes a wire 114, and the wire 114 passes through the fixing rod 12 and is electrically connected with the thermosensitive member 112. The temperature measuring part 11 further comprises a shell 113, the shell 113 is sleeved on the outer peripheral surface of the fixed rod 12, an upper folded edge 1131 is arranged at the upper end of the shell 113, a lower folded edge 1112 is arranged on the lower surface of the heat collecting plate 111, and the upper folded edge 1131 and the lower folded edge 1112 are buckled to limit the relative displacement of the shell 113 and the heat collecting plate 111. The casing 113 is sleeved on the outer peripheral surface of the fixed rod 12, so that the radial position of the casing 113 relative to the fixed rod 12 is relatively fixed, large deflection cannot occur in the radial direction of the fixed rod 12, namely, after large-motion operations such as pot turning and the like are performed on the pot, the dry-heating prevention probe is far away from the center of the pot bottom, and the upper folded edge 1131 of the casing 113 and the lower folded edge 1112 of the heat collecting plate 111 are buckled to enable the casing 113 to move up and down relative to the fixed rod 12, so that the heat collecting plate 111 cannot be separated. The shell 113 further comprises a heat insulation layer 1132, the heat insulation layer 1132 is sleeved on the outer peripheral surface of the shell 113, so that the influence of high-temperature smoke on the heat-sensitive member 112 is reduced, the heat of the smoke is prevented from being transferred to the heat-sensitive member 112 layer by layer from the outermost shell, in addition, the elastic component 13 is arranged inside the shell, and therefore the influence of the high temperature on the elastic component 13 is small, and the service life of the elastic component 13 is prolonged.

The outer peripheral surface of the fixed rod 12 is provided with a baffle ring 221, the second fixed part 22 is sleeved outside the fixed rod 12, and the baffle ring 221 is abutted with the bottom of the second fixed part 22 to provide support for the second fixed part 22. The retaining ring 221 on the outer peripheral surface of the fixing rod 12 provides support for the second fixing portion 22, the second fixing portion 22 fixes the non-contact temperature measuring device 2, and the second fixing portion 22 is arranged on the fixing rod 12 to ensure that the height of the non-contact temperature measuring device 2 is always unchanged. And the second fixing part 22 is sleeved outside the fixing rod 12, so that the non-contact temperature measuring device 2 is convenient to install and detach, and the later maintenance is simple.

The non-contact type temperature measuring unit 21 is circumferentially disposed at the periphery of the contact type temperature measuring device 1. The non-contact type temperature measuring unit 21 is circumferentially arranged on the periphery of the contact type temperature measuring device 1, and can uniformly detect the temperature of a circle near the bottom of the pot. The second fixing portion 22 is also of an annular structure, wherein the non-contact temperature measuring unit 21 is disposed on the upper surface of the second fixing portion 22, and a cavity 221 is formed inside the second fixing portion 22.

The second fixing portion 22 is of an annular structure, can better fix the non-contact type temperature measuring device 2 annularly arranged on the periphery of the contact type temperature measuring device 1, is sleeved on the fixing rod 12, and is internally provided with the cavity 221, so that a considerable part of heat can be isolated from being conducted to the first fixing portion 12, and the temperature measuring portion 11 arranged on the first fixing portion 12 is affected.

In the present embodiment, the temperature measurement range of the contact type temperature measurement device 1 is 200-360 ℃, and the temperature measurement range of the non-contact type temperature measurement device 2 is 200-360 ℃.

In this embodiment, the dry-burning prevention probe is disposed on a gas stove, the gas stove further comprises a controller, the controller is connected with the contact type temperature measuring device 1, the controller is also connected with the infrared non-contact type temperature measuring device 2, the controller pre-stores the pre-warning temperature of the contact type temperature measuring device 1, namely, the NTC thermistor temperature measuring device, and the pre-warning temperature of the infrared non-contact type temperature measuring unit 21, and the controller is used for sending dry-burning pre-warning when the temperature measured by the NTC thermistor temperature measuring device and the temperature measured by the infrared non-contact type temperature measuring unit 21 are both greater than the pre-warning temperature set in advance. In this embodiment, the pre-warning temperature of the NTC thermistor temperature measuring device is 300 ℃, and the pre-warning temperature of the infrared non-contact temperature measuring unit 21 is 280 ℃.

As shown in fig. 5, specifically, the controller firstly acquires the NTC thermistor temperature measuring device T (y), acquires the temperature T (n) of the infrared non-contact temperature measuring unit 21 if the temperature T (y) of the NTC thermistor temperature measuring device is greater than 300 ℃, continuously acquires the temperature T (y) of the NTC thermistor temperature measuring device if the temperature T (y) of the NTC thermistor temperature measuring device is less than or equal to 300 ℃, sends out a dry burning early warning if the temperature T (n) of the infrared non-contact temperature measuring unit 21 is greater than 280 ℃, and continuously acquires the temperature T (y) of the NTC thermistor temperature measuring device if the temperature T (n) of the infrared non-contact temperature measuring unit 21 is less than or equal to 280 ℃. In this embodiment, the gas stove further includes a gas valve, the controller is connected to the gas valve, the controller prestores a closing time Δt of the gas valve, and when the controller sends out the dry combustion method, the time reaches Δt, and the controller controls the gas valve to be closed.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the utility model, but such changes and modifications fall within the scope of the utility model.

Claims (10)

1. The utility model provides a prevent dry combustion method probe, includes contact temperature measuring device, contact temperature measuring device includes temperature measuring part and first fixed part, temperature measuring part for but first fixed part telescopic movement, its characterized in that, prevent dry combustion method probe still includes non-contact temperature measuring device, non-contact temperature measuring device includes non-contact temperature measuring unit and second fixed part, first fixed part with second fixed part is connected, non-contact temperature measuring unit's height is less than when temperature measuring part removes to the minimum.

2. The dry heating prevention probe of claim 1, wherein the first fixing part is a fixing rod, the contact type temperature measuring device further comprises an elastic part, a supporting plate is arranged at the upper end of the fixing rod, one end of the elastic part is abutted against the upper surface of the supporting plate, and the other end of the elastic part is abutted against the temperature measuring part.

3. The dry heating preventing probe according to claim 2, wherein the temperature measuring part comprises a heat collecting plate and a heat sensitive member, a heat sensitive member accommodating cavity is formed in the lower surface of the heat collecting plate, and the heat sensitive member is arranged in the heat sensitive member accommodating cavity.

4. The dry heat prevention probe of claim 3, wherein the temperature measuring part further comprises a wire passing through the fixing rod and electrically connected with the thermosensitive member.

5. The dry heating preventing probe of claim 3, wherein the temperature measuring part further comprises a housing, the housing is sleeved on the outer circumferential surface of the fixing rod, an upper folded edge is arranged at the upper end of the housing, a lower folded edge is arranged on the lower surface of the heat collecting plate, and the upper folded edge and the lower folded edge are buckled to limit the relative displacement of the housing and the heat collecting plate.

6. The dry-fire prevention probe of claim 1, wherein the non-contact temperature measurement unit is an infrared temperature measurement unit.

7. The dry heating prevention probe of claim 1, wherein the first fixing part is a fixing rod, a baffle ring is arranged on the outer circumferential surface of the fixing rod, the second fixing part is sleeved outside the fixing rod, and the baffle ring is abutted with the bottom of the second fixing part to provide support for the second fixing part.

8. The dry-fire prevention probe of claim 1, wherein the non-contact temperature measurement unit is circumferentially disposed around the periphery of the contact temperature measurement device.

9. The dry heating preventing probe of claim 8, wherein the second fixing portion has a ring-shaped structure, wherein the non-contact temperature measuring unit is disposed on an upper surface of the second fixing portion, and a cavity is formed in the second fixing portion.

10. A gas range comprising the dry combustion preventing probe according to any one of claims 1 to 9.