CN-117288347-B - Dry-heating-preventing temperature measuring probe, pot bottom temperature measuring method and burner

CN117288347BCN 117288347 BCN117288347 BCN 117288347BCN-117288347-B

Abstract

The invention provides an anti-dry-heating temperature measurement probe, a pot bottom temperature measurement method and a burner, and belongs to the technical field of burners. The dry-heating-preventing temperature measuring probe comprises an inner ring assembly and an outer ring assembly, wherein the inner ring assembly comprises an inner ring moving part and an inner ring temperature measuring part, the inner ring temperature measuring part is in heat conduction contact with the inner ring moving part, the outer ring assembly comprises a plurality of outer ring moving parts and a plurality of outer ring temperature measuring parts, the single outer ring moving part is in heat conduction contact with the plurality of outer ring temperature measuring parts, and the inner ring moving parts and the plurality of outer ring moving parts are arranged at intervals along the radial direction of the dry-heating-preventing temperature measuring probe from inside to outside. Through the structure, the dry-heating-preventing temperature measuring probe is guaranteed to be closely attached to the bottom of the cooker, multi-point temperature measurement is achieved, accuracy of the dry-heating-preventing temperature measuring probe in temperature measurement is improved, misjudgment is avoided, and when the temperature of the bottom of the cooker reaches the threshold value of a temperature measuring piece, gas supply is cut off, so that the cooker is prevented from being burnt.

Inventors

GUO DA
LIU SHENCHANG
YU YU

Assignees

宁波方太厨具有限公司

Dates

Publication Date: 20260508
Application Date: 20220617

Claims (10)

1. The dry-heating-preventing temperature measurement probe is characterized by comprising an inner ring assembly and an outer ring assembly, wherein the inner ring assembly comprises an inner ring moving part and an inner ring temperature measuring part, the inner ring temperature measuring part is in heat conduction contact with the inner ring moving part, the outer ring assembly comprises a plurality of outer ring moving parts and a plurality of outer ring temperature measuring parts, a single outer ring moving part is in heat conduction contact with a plurality of outer ring temperature measuring parts, and the inner ring moving parts and the outer ring moving parts are arranged at intervals along the radial direction of the dry-heating-preventing temperature measurement probe from inside to outside; the anti-dry heating temperature measurement probe further comprises a bottom support, the inner ring assembly further comprises an inner ring elastic piece, two ends of the inner ring elastic piece are respectively contacted with the inner ring moving piece and the bottom support along the vertical direction, the outer ring assembly further comprises a plurality of outer ring elastic pieces, the outer ring elastic pieces and the outer ring moving pieces are arranged in a one-to-one correspondence mode, two ends of the outer ring elastic pieces are respectively contacted with the outer ring moving piece and the bottom support along the vertical direction, the inner ring moving piece comprises an inner ring abutting part and an inner ring side wall, the inner ring temperature measurement piece is connected with the inner ring abutting part, the inner ring abutting part is used for abutting with the bottom of a pot, the inner ring side wall extends downwards along the side edge of the inner ring abutting part and surrounds an inner ring accommodating cavity, the inner ring elastic piece is at least partially positioned in the inner ring accommodating cavity, the outer ring moving piece comprises an outer ring abutting part, an outer ring inner side wall and an outer ring outer side wall, the outer ring abutting part is annular, the temperature measurement piece is connected with the outer ring abutting part and is used for abutting against the bottom of the pot, the inner side wall of the outer ring and the outer side wall of the outer ring extend downwards along the inner side edge and the outer side edge of the outer ring abutting part respectively and enclose an outer ring accommodating cavity with the outer ring abutting part, and the outer ring elastic piece is at least partially positioned in the outer ring accommodating cavity.
2. The dry-fire prevention temperature measurement probe of claim 1, wherein a plurality of the outer ring temperature measurement members in thermal contact with a single outer ring moving member are uniformly arranged along the circumferential direction of the outer ring moving member.
3. The dry-heating prevention temperature measurement probe according to claim 1, wherein an even number of outer ring temperature measurement members are in heat conduction contact with a single outer ring moving member, and a plurality of outer ring temperature measurement members are symmetrically arranged in pairs along the radial direction of the outer ring moving member.
4. The dry-fire prevention temperature probe of claim 1 wherein said outer ring temperature measurement members adjacent said outer ring displacement member are disposed co-linearly.
5. The dry-fire prevention temperature measurement probe of claim 1, wherein a lower end of the outer ring outer side wall of the outer ring moving member at an outermost side of the outer ring assembly is not higher than a lower end of the outer ring elastic member and not higher than a lower end of the inner ring elastic member.
6. The dry-fire prevention temperature measurement probe of claim 5, wherein the lower end of the inner ring side wall is lower than the lower end of the inner ring temperature measurement thermosensitive portion of the inner ring temperature measurement member and higher than the lower end of the inner ring elastic member, and the lower ends of the outer ring side wall and the outer ring inner side wall are lower than the lower end of the outer ring temperature measurement thermosensitive portion of the outer ring temperature measurement member and higher than the lower end of the outer ring elastic member except the outer ring side wall of the outer ring moving member at the outermost side of the outer ring assembly.
7. The dry-heating-preventing temperature measurement probe according to claim 6, wherein the outer ring moving member further comprises a limiting portion, the limiting portion is located in the outer ring accommodating cavity and connected to the inner side wall of the outer ring or the outer side wall of the outer ring, a horizontal plane where an upper surface of the limiting portion is located is not higher than a horizontal plane where a lower end of the inner ring temperature measurement temperature sensing portion is located and is not higher than a horizontal plane where a lower end of the outer ring temperature measurement temperature sensing portion is located, the limiting portion divides the outer ring accommodating cavity into an upper cavity and a lower cavity, the outer ring elastic member is located at least partially in the lower cavity, and two ends of the outer ring elastic member are respectively contacted with the limiting portion and the bottom support.
8. A bottom temperature measurement method of a dry-heating prevention temperature measurement probe, which is characterized in that the bottom temperature measurement method is suitable for the dry-heating prevention temperature measurement probe according to any one of claims 1 to 7, and comprises the following steps: And judging whether the temperatures of the outer ring temperature measuring piece and the inner ring temperature measuring piece exceed a threshold value or not sequentially from outside to inside along the radial direction of the dry-heating prevention temperature measuring probe, if not, continuing to measure the temperature or judging whether the temperature of the outer ring temperature measuring piece adjacent to the outer ring temperature measuring piece exceeds the threshold value, if so, judging whether the temperature of the inner ring temperature measuring piece adjacent to the outer ring temperature measuring piece or the inner ring temperature measuring piece exceeds the threshold value until the temperature of the inner ring temperature measuring piece exceeds the threshold value, and cutting off the gas supply of the burner.
9. A burner comprising a fire cover, wherein a mounting channel is formed in the middle of the fire cover, and the burner further comprises a dry-burning-prevention temperature measurement probe according to any one of claims 1 to 7, wherein the dry-burning-prevention temperature measurement probe is arranged in the mounting channel.
10. The burner of claim 9, wherein the top of the dry-fire prevention temperature probe is higher than the top of the fire cover.

Description

Dry-heating-preventing temperature measuring probe, pot bottom temperature measuring method and burner Technical Field The invention relates to the technical field of burners, in particular to an anti-dry-heating temperature measuring probe, a pot bottom temperature measuring method and a burner. Background With social development and technological progress, people pay more and more attention to cooking safety. During cooking, a condition in which the cookware burns dry due to negligence of use often occurs. In order to prevent the cookware from being burned, an installation channel is usually formed in the middle of a fire cover of a burner, a temperature measuring probe is arranged in the installation channel to identify the temperature of the cookware bottom, when the temperature of the cookware bottom exceeds a certain threshold value, the cookware is judged to be burned, and then the fuel gas supply is cut off, so that the combustion is stopped, and the cookware is prevented from being burned. However, in the using process of the burner, the existing temperature measuring probe is mostly single-ring and the top is a round plane, so that the contact with the bottom of the pan is easy to be incomplete, the temperature judgment is inaccurate, misjudgment flameout occurs, meanwhile, the temperature of the side wall of the temperature measuring probe is influenced by flame heat radiation and high-temperature flue gas heat convection, the temperature is easy to be too high, misjudgment flameout is further caused, in addition, the existing temperature measuring probe is free of an overheat protection device, is easy to be thermally fatigued after being exposed in a high-temperature environment for a long time, and the service life is shortened. Disclosure of Invention The invention aims to overcome the defects that the temperature judgment of an anti-dry-heating temperature measuring probe is inaccurate and misjudgment is easy to occur in the prior art, and provides the anti-dry-heating temperature measuring probe, a pot bottom temperature measuring method and a burner. The invention solves the technical problems by the following technical scheme: the utility model provides a prevent dry combustion method temperature probe, prevent dry combustion method temperature probe includes inner ring subassembly and outer loop subassembly, the inner ring subassembly includes inner ring moving part and inner ring temperature measuring part, the inner ring temperature measuring part with inner ring moving part heat conduction contact, the outer loop subassembly includes a plurality of outer loop moving parts and a plurality of outer loop temperature measuring part, single outer loop moving part heat conduction contact has a plurality of outer loop temperature measuring part, follows prevent dry combustion method temperature probe's radial, from inside to outside, the inner ring moving part, a plurality of outer loop moving part interval sets up. According to the scheme, the dry-heating-preventing temperature measuring probe is provided with the inner ring moving part and the plurality of outer ring moving parts, the suitability of the dry-heating-preventing temperature measuring probe and the bottom of the cooker and the positioning accuracy are improved due to the arrangement of the plurality of ring bodies, the defect that a single ring body is easy to contact with the bottom of the cooker in the traditional scheme is avoided, the inner ring temperature measuring part and the plurality of outer ring temperature measuring parts can carry out multipoint temperature measurement on the bottom of the cooker, temperature measuring errors are reduced, the defect that a single temperature measuring point is easy to cause inaccurate temperature measurement in the traditional scheme is avoided, the inner ring moving parts and the plurality of outer ring moving parts are arranged at intervals, namely, air separation layers are arranged between the inner ring moving parts and the adjacent outer ring moving parts and between the plurality of outer ring moving parts, the air separation layers have good heat insulation effects, and heat transfer between the inner ring moving parts and the plurality of outer ring moving parts can be reduced. Through the structure, the dry-heating-preventing temperature measuring probe is guaranteed to be closely attached to the bottom of the cooker, multi-point temperature measurement is achieved, accuracy of the dry-heating-preventing temperature measuring probe in temperature measurement is improved, misjudgment is avoided, and when the temperature of the bottom of the cooker reaches the threshold value of a temperature measuring piece, gas supply is cut off, so that the cooker is prevented from being burnt. Preferably, a plurality of outer ring temperature measuring pieces in heat conduction contact with a single outer ring moving piece are uniformly arranged along the circumferential direction of