CN215524865U - Temperature measurement structure for preventing dry burning - Google Patents
Temperature measurement structure for preventing dry burning Download PDFInfo
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- CN215524865U CN215524865U CN202120303619.5U CN202120303619U CN215524865U CN 215524865 U CN215524865 U CN 215524865U CN 202120303619 U CN202120303619 U CN 202120303619U CN 215524865 U CN215524865 U CN 215524865U
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- elastic piece
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Abstract
The utility model discloses an anti-dry-heating temperature measurement structure which comprises a mounting rack, an inner sheath, an outer sheath, a first elastic piece and a second elastic piece, wherein a first shaft sleeve is arranged in the middle of the mounting rack; the inner sheath penetrates through the first shaft sleeve in a sliding mode, a first limiting ring, a second limiting ring and a third limiting ring are sequentially arranged on the inner sheath from the top to the bottom, the second limiting ring and the third limiting ring are respectively arranged on two sides of the first shaft sleeve, a thermistor and an adhesive layer are arranged on the inner top of the inner sheath, and a lead extending out of the thermistor penetrates through the bottom of the inner sheath; a middle pipe is arranged in the middle of the outer sheath, a second shaft sleeve is arranged at the tail end of the middle pipe, the top of the inner sheath penetrates through the second shaft sleeve in a sliding mode, and a first limiting ring and a second limiting ring are arranged on two sides of the second shaft sleeve respectively; the first elastic piece and the second elastic piece are sleeved on the outer wall of the inner sheath, and two ends of the first elastic piece are in top contact with the mounting frame and the second limiting ring; two ends of the second elastic piece are pressed against the second limiting ring and the second shaft sleeve. The utility model provides a durable dry-burning-resistant temperature measurement structure which is simple in structure.
Description
Technical Field
The utility model relates to the technical field of auxiliary devices of cooking utensils, in particular to a temperature measurement structure for preventing dry burning.
Background
The thermistor is a semiconductor ceramic element sensitive to temperature, has the characteristics of quick response, high precision, good stability and low cost, and is widely applied to various occasions related to temperature. Particularly, the food temperature detection industry is directly hooked with the temperature, and most of the food temperature detection is carried out at the temperature from normal temperature to high temperature of 380 ℃.
Gas cookers and gas stoves are the most common cooking utensils used in households at present. In order to accurately control the optimal temperature required for cooking and the temperature of a pot during cooking food, a temperature sensor is usually provided to solve accidents such as over-temperature, pot burnt, dry pot burning and flameout. Therefore, it is very important to test the temperature of the surface of the pot bottom.
The temperature sensor structure used for the kitchen range at present needs a lifting structure to enable the lifting structure to be close to a heat source for accurate temperature measurement. The lifting structure on the market adopts the spring as the core component for a long time, and the elastic piece can lose elasticity gradually after long-term use. Therefore, the lifting state cannot be normally performed, which seriously affects the temperature measurement accuracy of the temperature sensor. Meanwhile, when the temperature sensor works, the heat radiation of flame exists at the periphery of the environment where the temperature sensor is located, and at the moment, the temperature sensor can be influenced by the heat radiation of the surrounding flame, so that the difference between the measured temperature and the actual temperature of the pot bottom is large, and the temperature signal distortion is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a durable anti-dry-heating temperature measurement structure which is simple in structure.
The utility model discloses a temperature measurement structure for preventing dry heating, which adopts the technical scheme that:
a temperature measurement structure for preventing dry heating comprises a mounting rack, an inner sheath, an outer sheath, a first elastic piece and a second elastic piece, wherein a first shaft sleeve is arranged in the middle of the mounting rack; the inner sheath penetrates through the first shaft sleeve in a sliding mode, a first limiting ring, a second limiting ring and a third limiting ring are sequentially arranged on the inner sheath from the top to the bottom, the second limiting ring and the third limiting ring are respectively arranged on two sides of the first shaft sleeve, a thermistor and an adhesive layer are arranged on the inner top of the inner sheath, and a lead extending out of the thermistor penetrates through the bottom of the inner sheath; a middle pipe is arranged in the middle of the outer sheath, a second shaft sleeve is arranged at the tail end of the middle pipe, the top of the inner sheath penetrates through the second shaft sleeve in a sliding mode, and the first limiting ring and the second limiting ring are arranged on two sides of the second shaft sleeve respectively; the first elastic piece is sleeved on the inner sheath and the outer wall of the first shaft sleeve, and two ends of the first elastic piece respectively push against the mounting frame and one end face of the second limiting ring; the second elastic piece is sleeved on the outer wall of the inner sheath, and two ends of the second elastic piece respectively push against the other end face of the second limiting ring and the second shaft sleeve.
Preferably, the thermistor is one of an NTC thermistor, a PTC thermistor, a KTY-series thermistor, an RTD, a platinum resistor, and a thermocouple.
Preferably, the adhesive layer is one or more of ceramic adhesive, high-temperature silica gel, epoxy adhesive, UV adhesive and acrylate adhesive.
Preferably, the outer wall of the outer sheath is made of polished stainless steel.
Preferably, the middle pipe is of a tapered structure.
The utility model discloses a temperature measurement structure for preventing dry heating, which has the beneficial effects that: the middle part of the mounting rack is provided with a first shaft sleeve. The inner sheath slides and passes first axle sleeve, and the inner sheath is equipped with first spacing ring, second spacing ring and third spacing ring by top to bottom in proper order, and first axle sleeve both sides are arranged respectively in to second spacing ring and third spacing ring, and the interior top of inner sheath is equipped with thermistor and glue film, and the wire that thermistor extends passes the inner sheath bottom. The middle part of the outer sheath is provided with a middle pipe, the tail end of the middle pipe is provided with a second shaft sleeve, the top of the inner sheath penetrates through the second shaft sleeve in a sliding mode, and the first limiting ring and the second limiting ring are arranged on two sides of the second shaft sleeve respectively. The inner sheath and the first shaft sleeve outer wall are arranged on the first elastic piece in a sleeved mode, and two ends of the first elastic piece respectively abut against the mounting frame and one end face of the second limiting ring. The second elastic piece is sleeved on the outer wall of the inner sheath, and two ends of the second elastic piece respectively push against the other end face of the second limiting ring and the second shaft sleeve. When the temperature is measured, the outer sheath is pressed down by the cooker to force the second elastic piece to press down, the downward pressure is transmitted to the second limiting ring, so that the inner sheath presses down, the first elastic piece compresses, and the inner sheath rises again due to the rebound force, thereby being in a balanced state. Under the state, the top parts of the outer sheath and the inner sheath are both pushed against the pot bottom, and a third heat insulation cavity is formed between the top end of the outer sheath and the top ends of the pot bottom and the inner sheath. So far, the thermistor at the top of the inner sheath measures only the heat conducted from the bottom of the pan, and most of the heat radiated from the flame is blocked by the third heat insulation cavity. In the process, the two elastic parts can share the acting force, and the influence of the acting force on the single elastic part is weakened. Therefore, the service life of the elastic piece is prolonged, and the elastic piece is more durable compared with other structures.
Drawings
FIG. 1 is a schematic structural diagram of a temperature measurement structure for preventing dry heating according to the present invention;
FIG. 2 is a cross-sectional view of a temperature measurement structure for preventing dry heating according to the present invention;
FIG. 3 is a schematic structural diagram of an installation rack of a temperature measurement structure for preventing dry heating according to the present invention;
FIG. 4 is a schematic structural diagram of an inner sheath of a dry-heating-proof temperature measurement structure according to the present invention;
FIG. 5 is a schematic structural view of an outer sheath of a temperature measurement structure for preventing dry heating according to the present invention.
Detailed Description
The utility model will be further elucidated and described with reference to the embodiments and drawings of the specification:
referring to fig. 1-5, a temperature measuring structure for preventing dry heating includes a mounting frame 10, an inner sheath 20, an outer sheath 30, a first elastic member 41 and a second elastic member 42.
The middle of the mounting frame 10 is provided with a first shaft sleeve 11.
The inner sheath 20 slides and passes through the first shaft sleeve 11, the first limiting ring 21, the second limiting ring 22 and the third limiting ring 23 are sequentially arranged on the inner sheath 20 from top to bottom, the second limiting ring 22 and the third limiting ring 23 are respectively arranged on two sides of the first shaft sleeve 11, the thermistor 24 and the glue layer 25 are arranged on the inner top of the inner sheath 20, and the lead 26 extending out of the thermistor 24 passes through the bottom of the inner sheath 20.
The middle part of the outer sheath 30 is provided with a middle pipe 31, the tail end of the middle pipe 31 is provided with a second shaft sleeve 32, the top of the inner sheath 20 penetrates through the second shaft sleeve 32 in a sliding mode, and the first limiting ring 21 and the second limiting ring 22 are arranged on two sides of the second shaft sleeve 32 respectively.
The first limiting ring 21 and the third limiting ring 23 are used for limiting the inner sheath 20 and preventing the inner sheath from sliding out of the second shaft sleeve 32 or the first shaft sleeve 11.
The first elastic member 41 is sleeved on the outer walls of the inner sheath 20 and the first shaft sleeve 11, and two ends of the first elastic member 41 respectively contact the end surfaces of the mounting frame 10 and the second limiting ring 22. The second elastic member 42 is sleeved on the outer wall of the inner sheath 20, and two ends of the second elastic member 42 respectively contact the other end surface of the second limiting ring 22 and the second shaft sleeve 32.
During temperature measurement, the outer sheath 30 is pressed down by the cooker to force the second elastic member 42 to press down, the downward pressure is transmitted to the second limiting ring 22, so that the inner sheath 20 presses down, and then the first elastic member 41 compresses, and the inner sheath 20 rises due to the rebound force, so that the inner sheath is in a balanced state. In this state, the top of the outer sheath 30 and the top of the inner sheath 20 both contact the bottom of the pot, and a third thermal insulation chamber 53 is formed between the top of the outer sheath 30 and the bottom of the pot and the top of the inner sheath 20. To this end, the thermistor 24 at the top of the inner jacket 20 measures only heat conducted from the bottom of the pan, and most of the heat radiated from the flame is blocked by the third insulating chamber 53. In the process, the two elastic parts can share the acting force, and the influence of the acting force on the single elastic part is weakened. Therefore, the service life of the elastic piece is prolonged, and the elastic piece is more durable compared with other structures.
Meanwhile, the cavity of the inner sheath 20 forms a first heat insulation cavity 51, the inner sheath 20 and the outer sheath 30 form a second heat insulation cavity 52, and heat is effectively insulated through the double-layer heat insulation cavity, so that the adhesive layer 25 and the wires 26 are protected from being affected by high temperature.
In this embodiment, the inner sheath 20 is made of stainless steel, copper, aluminum, alloy or a combination thereof plated, and may be made of ceramic or a combination of ceramic and metal. The outer jacket 30 is stainless steel with a polished and bright outer wall that effectively reflects thermal radiation, or the outer wall is coated with an anti-radiation reflective ceramic coating. The thermistor 24 is one of an NTC thermistor, a PTC thermistor, a KTY-series thermistor, an RTD, a platinum resistor, and a thermocouple. The adhesive layer 25 is one or more of ceramic adhesive, high-temperature silica gel, epoxy adhesive, UV adhesive and acrylate adhesive. The lead 26 is made of one or more of Dumet wire, copper wire and nickel wire, and is led out by welding and adding a protective insulating layer; or an electronic wire such as PTFE, PVC, cloud bus, silica gel wire, PFA, PFE, PE, etc.
The middle pipe 31 adopts the technologies of pipe shrinkage, diameter reduction and stretching, so that the wall is thin, the inner diameter is small, and the induction head can be positioned at the most pointed end of the inner sheath. Compared with the existing product, the device has the advantages of stable and reliable position, small volume and high reaction speed.
The utility model provides an anti-dry-heating temperature measurement structure. The inner sheath slides and passes first axle sleeve, and the inner sheath is equipped with first spacing ring, second spacing ring and third spacing ring by top to bottom in proper order, and first axle sleeve both sides are arranged respectively in to second spacing ring and third spacing ring, and the interior top of inner sheath is equipped with thermistor and glue film, and the wire that thermistor extends passes the inner sheath bottom. The middle part of the outer sheath is provided with a middle pipe, the tail end of the middle pipe is provided with a second shaft sleeve, the top of the inner sheath penetrates through the second shaft sleeve in a sliding mode, and the first limiting ring and the second limiting ring are arranged on two sides of the second shaft sleeve respectively. The inner sheath and the first shaft sleeve outer wall are arranged on the first elastic piece in a sleeved mode, and two ends of the first elastic piece respectively abut against the mounting frame and one end face of the second limiting ring. The second elastic piece is sleeved on the outer wall of the inner sheath, and two ends of the second elastic piece respectively push against the other end face of the second limiting ring and the second shaft sleeve. When the temperature is measured, the outer sheath is pressed down by the cooker to force the second elastic piece to press down, the downward pressure is transmitted to the second limiting ring, so that the inner sheath presses down, the first elastic piece compresses, and the inner sheath rises again due to the rebound force, thereby being in a balanced state. Under the state, the top parts of the outer sheath and the inner sheath are both pushed against the pot bottom, and a third heat insulation cavity is formed between the top end of the outer sheath and the top ends of the pot bottom and the inner sheath. So far, the thermistor at the top of the inner sheath measures only the heat conducted from the bottom of the pan, and most of the heat radiated from the flame is blocked by the third heat insulation cavity. In the process, the two elastic parts can share the acting force, and the influence of the acting force on the single elastic part is weakened. Therefore, the service life of the elastic piece is prolonged, and the elastic piece is more durable compared with other structures.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (4)
1. The anti-dry-heating temperature measurement structure is characterized by comprising a mounting rack, wherein a first shaft sleeve is arranged in the middle of the mounting rack;
the inner sheath penetrates through the first shaft sleeve in a sliding mode, a first limiting ring, a second limiting ring and a third limiting ring are sequentially arranged on the inner sheath from the top to the bottom, the second limiting ring and the third limiting ring are respectively arranged on two sides of the first shaft sleeve, a thermistor and a glue layer are arranged on the inner top of the inner sheath, and a lead extending out of the thermistor penetrates through the bottom of the inner sheath;
the middle part of the outer sheath is provided with a middle pipe, the tail end of the middle pipe is provided with a second shaft sleeve, the top of the inner sheath penetrates through the second shaft sleeve in a sliding mode, and the first limiting ring and the second limiting ring are arranged on two sides of the second shaft sleeve respectively;
the first elastic piece is sleeved on the inner sheath and the outer wall of the first shaft sleeve, and two ends of the first elastic piece respectively push against the mounting frame and one end face of the second limiting ring;
the second elastic piece is sleeved on the outer wall of the inner sheath, and two ends of the second elastic piece respectively push against the other end face of the second limiting ring and the second shaft sleeve.
2. The structure of claim 1, wherein the thermistor is one of an NTC thermistor, a PTC thermistor, a KTY-series thermistor, an RTD, a platinum resistor, and a thermocouple.
3. The structure of claim 1, wherein the outer wall of the outer sheath is polished stainless steel.
4. The structure of claim 1, wherein the middle tube is tapered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120303619.5U CN215524865U (en) | 2021-02-03 | 2021-02-03 | Temperature measurement structure for preventing dry burning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120303619.5U CN215524865U (en) | 2021-02-03 | 2021-02-03 | Temperature measurement structure for preventing dry burning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215524865U true CN215524865U (en) | 2022-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120303619.5U Active CN215524865U (en) | 2021-02-03 | 2021-02-03 | Temperature measurement structure for preventing dry burning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215524865U (en) |
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2021
- 2021-02-03 CN CN202120303619.5U patent/CN215524865U/en active Active
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