CN203564080U - Temperature measuring module used for pressure cooker - Google Patents
Temperature measuring module used for pressure cooker Download PDFInfo
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- CN203564080U CN203564080U CN201320790964.1U CN201320790964U CN203564080U CN 203564080 U CN203564080 U CN 203564080U CN 201320790964 U CN201320790964 U CN 201320790964U CN 203564080 U CN203564080 U CN 203564080U
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- stainless steel
- steel tube
- pressure cooker
- temperature measurement
- temperature
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- 239000010935 stainless steel Substances 0.000 claims abstract description 65
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 65
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 40
- 239000004411 aluminium Substances 0.000 claims description 34
- 238000009529 body temperature measurement Methods 0.000 claims description 22
- 239000011521 glass Substances 0.000 claims description 16
- 238000003466 welding Methods 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 12
- 239000011347 resin Substances 0.000 claims description 10
- 229920005989 resin Polymers 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 6
- 229910000679 solder Inorganic materials 0.000 claims description 6
- 238000001514 detection method Methods 0.000 abstract description 13
- 230000005855 radiation Effects 0.000 abstract description 8
- 239000000463 material Substances 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 2
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000000280 densification Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010946 fine silver Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011214 refractory ceramic Substances 0.000 description 1
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model relates to the technical field of pressure cookers, and aims to solves the technical problem and provide a temperature measuring module used for a pressure cooker, which is capable of improving the detection precision and is safe and reliable to use. The temperature measuring module comprises a stainless steel pipe and an aluminum seat covering the stainless steel pipe, an NTC (Negative Temperature Coefficient) chip used for measuring the temperature is arranged on the bottom end of the stainless steel pipe, the bottom end of the stainless steel pipe protrudes downwards relative to the aluminum seat, and the protruding length is at least 10 mm. The heat conduction performance of the aluminum seat decides quicker heat radiation of the aluminum seat, so that the detected temperature has a larger descending range than the actual temperature, the detection precision is seriously influenced against the control on the pressure in the pressure cooker. The bottom end of the stainless steel pipe protrudes downwards relative to the aluminum seat, the protruding length is at least 10 mm, and the NTC chip is arranged on the protruding bottom end of the stainless steel pipe, so that the radiating influence of the aluminum seat can be avoided to some extent; the descending range, which is compared to the actual temperature, of the detected temperature is reduced, so that the detection precision is improved; the temperature measuring module is safe and reliable to use.
Description
Technical field
The utility model relates to pressure cooker technical field, more specifically, relates to a kind of temperature measurement module for pressure cooker.
Background technology
In actual life, pressure cooker claims again pressure cooker, can greatly shorten the time of culinary art, saves the energy.Wherein the pressure in pressure cooker is controlled by the detection to kettle temperature mostly, uses the temperature in temperature measurement module detected pressures pot, then converts pressure to.In prior art, the aluminium seat that generally comprises stainless steel tube and encase stainless steel tube for the temperature measurement module of pressure cooker, the bottom in stainless steel tube is provided with the NTC chip for thermometric.Because stainless steel tube is different from the material of aluminium seat, aluminium seat is compared with stainless steel tube, and the heat-conductive characteristic of aluminium seat determines that its heat radiation is very fast, thereby the temperature detecting is compared actual temperature and declined by a big margin, have a strong impact on accuracy of detection, be unfavorable for the pressure in pressure cooker to control.
Utility model content
The utility model is intended to solve the problems of the technologies described above at least to a certain extent.
The purpose of this utility model is to provide a kind of raising accuracy of detection, the safe and reliable temperature measurement module for pressure cooker.
The utility model solves the technical scheme that its technical problem adopts: a kind of temperature measurement module for pressure cooker, the aluminium seat that comprises stainless steel tube and encase stainless steel tube, the bottom of described stainless steel tube is provided with the NTC chip for thermometric, and the relative aluminium seat in bottom of described stainless steel tube downwards outstanding and outstanding length is at least 10mm.
Because stainless steel tube is different from the material of aluminium seat, aluminium seat is compared with stainless steel tube, and the heat-conductive characteristic of aluminium seat determines that its heat radiation is very fast, thereby the temperature detecting is compared actual temperature and declined by a big margin, have a strong impact on accuracy of detection, be unfavorable for the pressure in pressure cooker to control.Therefore, the relative aluminium seat in bottom of stainless steel tube of the present utility model downwards outstanding and outstanding length is at least 10mm, NTC chip is located at the outstanding bottom of stainless steel tube, thereby can avoid being to a certain extent subject to the heat radiation impact of aluminium seat, the temperature that reduces to detect is compared the amplitude that actual temperature declines, thereby raising accuracy of detection is safe and reliable.
It should be noted that, the bottom of stainless steel tube downwards outstanding length is that the longer the better within the specific limits, is preferably at least 12mm.Yet owing to being subject to the impact of the factors such as material cost and assembling, stainless steel tube downwards outstanding length need to specifically be selected according to above-mentioned factor.
In one embodiment, described stainless steel tube and aluminium seat adopt riveted joint combination, and remain-0.1mm of error, makes aluminium seat tightly encase stainless steel tube, thereby reach a stronger pulling force grade, and then there is airtight, resistance to compression, antiseep and etch-proof feature.
In one embodiment, described stainless steel tube adopts welding, drawing process to make, and guarantees that diameter and the wall thickness of stainless steel tube has uniformity and uniformity.
In one embodiment, the diameter of described stainless steel tube is 3.8 ± 0.05mm, and the wall thickness of described stainless steel tube is 0.3 ± 0.05mm, guarantees compactness and sealing that stainless steel tube coordinates with aluminium seat completely.
In one embodiment, the bottom of described stainless steel tube adopts solder up, and seal thickness is 0.3 ~ 0.5mm, and round end angle is R1.9mm.Adopt special moment high-temperature soldering sealing process, guarantee that complete densification is welded as arc Semi round bottom in the situation that not destroying steel, guarantee that NTC chip thermometric in stainless steel tube has uniformity, uniformity and sensitivity simultaneously.
In one embodiment, described NTC chip adopts the NTC chip of glass shell, single-ended lead packages.This chip can fast reaction, has that stability is high, cold-hot impacts the features such as strong, operating temperature range is wide, drift rate is low, and its reaction sensitivity can reach 1 ~ 2 second, and working range is-40 ~ 300 ℃.
In a preferred embodiment, heat-conducting resin is filled in the bottom of described stainless steel tube.This heat-conducting resin can still be stablized the coefficient of expansion when 100 ℃ of boiling points, thereby the high efficient heat of high-temperature region in guaranteeing reaches the space of both filling between NTC chip and glass shell inwall, has no again loss and conduct the object of the accurate temperature in peripheral tested region.
In a preferred embodiment, the lead-in wire of described NTC chip and the junction of exposed electric wire adopt the welding welding of moment pressurized high-temperature, by the lead-in wire of NTC chip and exposed electric wire moment high temperature welding welding under certain pressure, guarantee the solid and reliable of chips welding, guarantee not exist the loose contact phenomenon causing due to rosin joint dry joint.
In a preferred embodiment, between described NTC chip and glass shell, adopt solder joint high temperature coated, effectively stop insulation and problem of withstand voltage between NTC chip and glass shell, more than making that product is withstand voltage and being increased to independent withstand voltage 2S-AC1800V, and make product in use to human body science safety more.
In a preferred embodiment, the non-temperature measurement fraction of the afterbody of described NTC chip adopts sealing resin to fill sealing.Adopt sealing resin to fill and seal and carry out water-proof type processing, can reach dustproof and waterproof protection from fumes texts, protection effect can reach IP68 grade, thus assurance product uninterruptedly reliability and durability under hot and humid environment for a long time.
The beneficial effects of the utility model are: because stainless steel tube is different from the material of aluminium seat, aluminium seat is compared with stainless steel tube, the heat-conductive characteristic of aluminium seat determines that its heat radiation is very fast, thereby the temperature detecting is compared actual temperature and is declined by a big margin, have a strong impact on accuracy of detection, be unfavorable for the pressure in pressure cooker to control.Therefore, the relative aluminium seat in bottom of stainless steel tube of the present utility model downwards outstanding and outstanding length is at least 10mm, NTC chip is located at the outstanding bottom of stainless steel tube, thereby can avoid being to a certain extent subject to the heat radiation impact of aluminium seat, the temperature that reduces to detect is compared the amplitude that actual temperature declines, thereby raising accuracy of detection is safe and reliable.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of the utility model.
Fig. 2 is the use schematic diagram of an embodiment of the utility model.
Fig. 3 is the enlarged drawing of A part in Fig. 2.
Accompanying drawing, only for exemplary illustration, can not be interpreted as restriction of the present utility model; For better explanation embodiment, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product; To those skilled in the art, in accompanying drawing some known configurations and explanation thereof may to omit be understandable.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further details.
As shown in Figure 1, a kind of temperature measurement module 100 for pressure cooker of the present utility model, the aluminium seat 102 that comprises stainless steel tube 101 and encase stainless steel tube 101, described 101 bottom is provided with the NTC chip 103 for thermometric, and the relative aluminium seat 102 in bottom of described stainless steel tube 101 downwards outstanding and outstanding length L is at least 10mm.
Because stainless steel tube is different from the material of aluminium seat, aluminium seat is compared with stainless steel tube, and the heat-conductive characteristic of aluminium seat determines that its heat radiation is very fast, thereby the temperature detecting is compared actual temperature and declined by a big margin, have a strong impact on accuracy of detection, be unfavorable for the pressure in pressure cooker to control.Therefore, the relative aluminium seat 102 in bottom of stainless steel tube 101 of the present utility model downwards outstanding and outstanding length L is at least 10mm, NTC chip 103 is located at the outstanding bottom of stainless steel tube 101, thereby can avoid being to a certain extent subject to the heat radiation impact of aluminium seat 102, the temperature that reduces to detect is compared the amplitude that actual temperature declines, thereby raising accuracy of detection is safe and reliable.
The Data Comparison of actual temperature and detected temperatures when following table is the downward outstanding length L difference of the relative aluminium seat 102 in the bottom of stainless steel tube 101.
| L | 7mm | 10mm | 12mm | 14mm |
| Actual temperature ℃ | Detected temperatures ℃ | Detected temperatures ℃ | Detected temperatures ℃ | Detected temperatures ℃ |
| 30 | 28 | 28 | 28 | 29 |
| 50 | 32 | 34 | 42 | 45 |
| 70 | 48 | 56 | 65 | 68 |
| 85 | 72 | 77 | 82 | 84 |
| 100 | 93 | 97 | 99 | 99 |
As seen from the above table, the bottom of stainless steel tube 101 downwards outstanding length L is that the longer the better within the specific limits, is preferably at least 12mm.Yet owing to being subject to the impact of the factors such as material cost and assembling, stainless steel tube downwards outstanding length L need to specifically be selected according to above-mentioned factor.
In the present embodiment, described stainless steel tube 101 adopts riveted joint combination with aluminium seat 102, and remain-0.1mm of error, makes aluminium seat 102 tightly encase stainless steel tube 101, thereby reach a stronger pulling force grade, and then there is airtight, resistance to compression, antiseep and etch-proof feature.
In the present embodiment, described stainless steel tube 101 adopts welding, drawing process to make, and guarantees that diameter and the wall thickness of stainless steel tube 101 has uniformity and uniformity.The diameter of described stainless steel tube 101 is 3.8 ± 0.05mm, and the wall thickness of described stainless steel tube 101 is 0.3 ± 0.05mm, guarantees compactness and sealing that stainless steel tube 101 coordinates with aluminium seat 102 completely.
In the present embodiment, the bottom of described stainless steel tube 101 adopts solder up, and seal thickness is 0.3 ~ 0.5mm, and round end angle is R1.9mm.Adopt special moment high-temperature soldering sealing process, guarantee that complete densification is welded as arc Semi round bottom in the situation that not destroying steel, guarantee that NTC chip 103 has uniformity, uniformity and sensitivity at the interior thermometric of stainless steel tube 101 simultaneously.
In the present embodiment, described NTC chip 103 adopts the NTC chip of glass shell (not shown), single-ended lead packages.This chip can fast reaction, has that stability is high, cold-hot impacts the features such as strong, operating temperature range is wide, drift rate is low, and its reaction sensitivity can reach 1 ~ 2 second, and working range is-40 ~ 300 ℃.
The manufacturing process of this NTC chip is: adopt refractory ceramics chip; With unidirectional two-wire touch-type fine silver, be welded in chip two-stage; The whole protective-cover type ultra-thin glass that adopts encapsulates, in being greater than the hot environment grinding tool of 600 ℃, melt glass, make it mobile, evenly be wrapped in around chip, the drops glass shell that front end maximum gauge of cooling rear formation is 1.6 ± 0.1mm is also tightly wrapped in around chip, reach seamless and fine and close effect, by the characterisitic parameter of special dilval lead-in wire stable output; The thickness of the glass shell thinnest part of cooled chip top temperature measurement position is less than 0.2mm, guarantees sensitivity, agility and the reliability of thermometric; The physical expansion coefficient of the copper alloy wire of special process is synchronously consistent with the glass shell of parcel chip, and NTC chip that guarantee in use to avoid the lead-in wire that causes because of expanding with heat and contract with cold to expand, glass shell breaks etc. causes is unstable, be oxidized and consequence that precision drift that other adverse circumstances cause etc. can not be estimated.
In the present embodiment, heat-conducting resin (not shown) is filled in the bottom of described stainless steel tube 101.This heat-conducting resin can still be stablized the coefficient of expansion when 100 ℃ of boiling points, thereby the high efficient heat of high-temperature region in guaranteeing, reach the space of both filling between NTC chip 103 and glass shell inwall, have no again loss and conduct the object of the accurate temperature in peripheral tested region.
In the present embodiment, the lead-in wire of described NTC chip 103 and the junction of exposed electric wire adopt the welding welding of moment pressurized high-temperature, by the lead-in wire of NTC chip 103 and exposed electric wire moment high temperature welding welding under certain pressure, guarantee the solid and reliable of chips welding, guarantee not exist the loose contact phenomenon causing due to rosin joint dry joint.
In the present embodiment, between described NTC chip 103 and glass shell, adopt solder joint high temperature coated, effectively stop insulation and problem of withstand voltage between NTC chip 103 and glass shell, more than making that product is withstand voltage and being increased to independent withstand voltage 2S-AC1800V, and make product in use to human body science safety more.
In the present embodiment, the non-temperature measurement fraction of the afterbody of described NTC chip 103 adopts sealing resin to fill sealing.Adopt sealing resin to fill and seal and carry out water-proof type processing, can reach dustproof and waterproof protection from fumes texts, protection effect can reach IP68 grade, thus assurance product uninterruptedly reliability and durability under hot and humid environment for a long time.
As shown in Figure 2 and Figure 3, temperature measurement module 100 of the present utility model is fixed on the pot cover of pressure cooker 200 by aluminium seat in use, for detection of the temperature in pressure cooker.
Obviously, above-described embodiment of the present utility model is only for the utility model example is clearly described, and is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.All any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in the protection domain of the utility model claim.
Claims (10)
1. the temperature measurement module for pressure cooker, the aluminium seat that comprises stainless steel tube and encase stainless steel tube, the bottom of described stainless steel tube is provided with the NTC chip for thermometric, it is characterized in that, the relative aluminium seat in bottom of described stainless steel tube downwards outstanding and outstanding length is at least 10mm.
2. the temperature measurement module for pressure cooker according to claim 1, is characterized in that, described stainless steel tube and aluminium seat adopt riveted joint combination.
3. the temperature measurement module for pressure cooker according to claim 1, is characterized in that, described stainless steel tube adopts welding, drawing process to make.
4. the temperature measurement module for pressure cooker according to claim 1, is characterized in that, the diameter of described stainless steel tube is 3.8 ± 0.05mm, and the wall thickness of described stainless steel tube is 0.3 ± 0.05mm.
5. the temperature measurement module for pressure cooker according to claim 1, is characterized in that, the bottom of described stainless steel tube adopts solder up, and seal thickness is 0.3 ~ 0.5mm, and round end angle is R1.9mm.
6. according to the temperature measurement module for pressure cooker described in claim 1 to 5 any one, it is characterized in that, described NTC chip adopts the NTC chip of glass shell, single-ended lead packages.
7. the temperature measurement module for pressure cooker according to claim 6, is characterized in that, heat-conducting resin is filled in the bottom of described stainless steel tube.
8. the temperature measurement module for pressure cooker according to claim 6, is characterized in that, the lead-in wire of described NTC chip and the junction of exposed electric wire adopt the welding welding of moment pressurized high-temperature.
9. the temperature measurement module for pressure cooker according to claim 6, is characterized in that, adopts solder joint high temperature coated between described NTC chip and glass shell.
10. the temperature measurement module for pressure cooker according to claim 6, is characterized in that, the non-temperature measurement fraction of afterbody of described NTC chip adopts sealing resin to fill sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320790964.1U CN203564080U (en) | 2013-12-05 | 2013-12-05 | Temperature measuring module used for pressure cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320790964.1U CN203564080U (en) | 2013-12-05 | 2013-12-05 | Temperature measuring module used for pressure cooker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203564080U true CN203564080U (en) | 2014-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320790964.1U Expired - Lifetime CN203564080U (en) | 2013-12-05 | 2013-12-05 | Temperature measuring module used for pressure cooker |
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| Country | Link |
|---|---|
| CN (1) | CN203564080U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020257868A1 (en) * | 2019-06-27 | 2020-12-30 | Breville Pty Limited | Temperature sensor fitting |
-
2013
- 2013-12-05 CN CN201320790964.1U patent/CN203564080U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020257868A1 (en) * | 2019-06-27 | 2020-12-30 | Breville Pty Limited | Temperature sensor fitting |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140430 |
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| CX01 | Expiry of patent term |