CN110553749A - Electronic temperature probe with double sensitive elements and manufacturing method thereof - Google Patents
Electronic temperature probe with double sensitive elements and manufacturing method thereof Download PDFInfo
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- CN110553749A CN110553749A CN201810557531.9A CN201810557531A CN110553749A CN 110553749 A CN110553749 A CN 110553749A CN 201810557531 A CN201810557531 A CN 201810557531A CN 110553749 A CN110553749 A CN 110553749A
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- sensitive element
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- connecting wire
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
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- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses an electronic temperature probe with double sensitive elements, which comprises a first sensitive element, a second sensitive element, four copper strips, four insulating sleeves, four protective sleeves, a metal probe, a first handle, a connecting wire, a second handle and a DC plug, wherein the first sensitive element is arranged on the first handle; also provides a method for manufacturing the electronic temperature probe with the double sensitive elements; the invention has the beneficial effects that: the electronic temperature probe commonly used in the common electric oven is generally provided with a single sensitive element which is arranged in a heating unit of the electric oven, and the temperature sensing area is limited; the design adopts double sensitive elements, the temperature sensing area is large, the temperature sensing reliability is high, the structure is simple, and the production is easy.
Description
Technical Field
The invention relates to the technical field of electronic temperature probes, in particular to an electronic temperature probe with double sensitive elements and a manufacturing method thereof.
Background
An electronic temperature probe is generally installed as an important component in a heating unit of a large-scale high-end electric oven device for detecting the actual temperature and the degree of cooking of food, particularly meat, inside the electric oven, and transmitting information about the temperature aspect of the food detected by the electronic temperature probe to a temperature control unit of the electric oven, which increases, decreases or terminates the actual operating temperature of the heating unit according to the received information. At present, electronic temperature probes on the market have the advantages of general performance, complex structure, high price and limited service life. And secondly, the high-temperature aging performance of the CD plug rubber material of the electronic temperature probe and the insulation outer coating of the wire is poor, the reliability is low, and the phenomena of color change, hardening, brittleness and the like are easy to occur. In addition, the insulating outer covering of the CD plug rubber material and the wire material of the electronic temperature probe has the defects of small adhesive force, low tensile strength and easy layering, so that the metal piece and the plastic material of the DC plug are not bonded sufficiently, and gaps, bubbles or cracks appear, and under severe conditions, the DC plug cannot be inserted into the female seat matched with the DC plug, so that the normal use of the electronic temperature probe is influenced. It is worth mentioning that, at present, the electronic temperature probes commonly used in the common electric oven are generally provided with a single sensitive element, and are arranged in the heating unit of the electric oven, and the temperature sensing area is limited. If the heating volume of the heating unit of the electric oven is large enough, the baking area of the electric oven is not tightly sealed, and even ventilation exists, the temperature sensing information of a single sensitive element in the electronic temperature probe may be inaccurate, so that the real temperature sensing of the temperature sensor is affected, and finally, the food in the oven cannot reach the expected baking effect, and the taste and the cooking degree of the baked food, especially meat food, are difficult to guarantee.
Disclosure of Invention
The invention mainly solves the technical problem of providing a double-sensitive electronic temperature probe and a manufacturing method thereof, wherein the double-sensitive electronic temperature probe adopts double-sensitive elements, has large temperature sensing area, high temperature sensing reliability, simple structure and easy production.
In order to solve the problems, the invention provides an electronic temperature probe with double sensitive elements, which comprises a first sensitive element, a second sensitive element, four copper strips, four insulating sleeves, four protective sleeves, a metal probe, a first handle, a connecting wire, a second handle and a DC plug, wherein the first sensitive element is arranged on the first handle; the pins of the first sensitive element and the second sensitive element are respectively penetrated with an insulating sleeve; the connecting wire is internally provided with four wires, and each wire is penetrated by a protective sleeve; one ends of four wires of the connecting wire are respectively connected with pins of the first sensitive element and the second sensitive element through the copper strips; connecting the four wires of the connecting wire with corresponding electrodes of the DC plug respectively; the temperature sensing glass heads of the first sensing element and the second sensing element are coated with proper heat conduction silicone grease and are arranged at the tip of the metal probe; carrying out pressure welding at the opening end position of the metal probe to enable the metal probe and the connecting wire to be integrated; performing injection molding on the opening end of the metal probe by adopting a special injection molding machine, an auxiliary device and a sizing material to form the first handle; and (3) performing injection molding at the joint of the DC plug and the connecting line by adopting a special injection molding machine, an auxiliary device and plastics to form the second handle.
Furthermore, the first sensitive element and the second sensitive element are negative temperature coefficient thermistors and are single-ended glass packaging thermistors.
Furthermore, the insulating sleeve is made of Teflon and is a halogen-free non-heat-shrinkable sleeve, and the color of the insulating sleeve is colorless and transparent.
Furthermore, the protective sleeve is made of Teflon and is a heat-shrinkable sleeve, and the color of the protective sleeve is colorless and transparent.
Furthermore, the metal probe is made of stainless steel, the appearance of the metal probe is a second-order cylindrical thin-wall shell, one end of the metal probe is closed in a sharp mode, the other end of the metal probe is opened, and a flange plate is arranged at the opening end of the metal probe.
Furthermore, the first handle is made of silica gel and is in a solid annular body in shape, the solid annular body is provided with an extending end, the extending end is in a cylindrical shape and naturally extends from the solid annular body to wrap the open end of the metal probe.
Furthermore, the second handle is made of polyvinyl chloride and is in a solid annular body in shape, the solid annular body is provided with an extending end, the extending end is in a cylindrical shape and naturally extends from the solid annular body to wrap the wiring electrode of the DC plug.
Furthermore, the connecting wire is a Teflon wire, the outer cover of the connecting wire is colorless transparent Teflon, the four wires contained in the connecting wire are Teflon wires, and the colors of the four wires are two black and two white
Furthermore, the two black wires are connected with the pins of the first sensitive element, and the two white wires are connected with the pins of the second sensitive element.
The invention also provides a manufacturing method of the electronic temperature probe with the double sensitive elements, which comprises the following steps:
a. Shearing the material: according to design requirements, a special shearing tool is adopted to shear the pins of the first sensitive element and the second sensitive element to required lengths; cutting the insulating sleeve to a required length; cutting the protective sleeve to a required length; and (4) cutting the connecting wire to the required length by adopting a special wire cutting machine, and stripping and wicking the wire inside.
b. Penetrating an insulating sleeve: and (c) according to design requirements, penetrating four insulating sleeves after the step a on the pins of the first sensitive element and the second sensitive element after the step a.
c. And (3) penetrating a protective sleeve: and (c) according to design requirements, threading the four protective sleeves after the step a on the four wires in the connecting wire after the step a.
d. And (3) copper strip compression joint: c, pressing the two black conducting wires obtained after the step c and the pins of the first sensitive element obtained after the step b together through a copper belt by adopting a special pressing machine; and c, pressing the two white leads obtained after the step c and the pins of the second sensitive element obtained after the step b together through a copper strip.
e. positioning a protection sleeve: and d, adjusting the position of the protective sleeve on the lead after the step d to enable the protective sleeve to cover the copper strip.
f. Thermal shrinkage of the protective sleeve: and e, placing the connecting wires obtained in the step e on a turnover disc in sequence, placing the turnover disc in a tunnel type automatic baking device, and performing thermal shrinkage treatment on the protective sleeve.
g. Coating heat-conducting silicone grease: and f, coating a proper amount of heat-conducting silicone grease on the temperature-sensing glass heads of the first sensing element and the second sensing element after the step f by adopting a special coating tool.
h. And (3) crimping the metal probe: and g, placing the first sensitive element and the second sensitive element after the step g at the tip end of the metal probe, and adopting a special crimping machine and a tool clamp to crimp the connecting wire and the metal probe into a whole.
i.dc plug assembly connection: and (e) welding the other end of the lead of the connecting wire obtained after the step h with a corresponding electrode of the DC plug by using a special spot welding machine.
j. Injection molding of the first handle: and (e) performing injection molding on the first handle at the opening end of the metal probe after the step i by adopting a special injection molding machine, an auxiliary device, a tool clamp and a silica gel material.
k. Injection molding of a second handle: and (4) performing injection molding on the second handle at the welding position of the DC plug and the lead after the step j by adopting a special injection molding machine, an auxiliary device, a tool clamp and a polyvinyl chloride material.
l, testing: and (e) performing appearance inspection standard, withstand voltage test and resistance test on the finished product obtained in the step k according to design requirements.
The invention discloses an electronic temperature probe with double sensitive elements, which comprises a first sensitive element, a second sensitive element, four copper strips, four insulating sleeves, four protective sleeves, a metal probe, a first handle, a connecting wire, a second handle and a DC plug, wherein the first sensitive element is arranged on the first handle; also provides a method for manufacturing the electronic temperature probe with the double sensitive elements; the invention has the beneficial effects that: the electronic temperature probe commonly used in the common electric oven is generally provided with a single sensitive element which is arranged in a heating unit of the electric oven, and the temperature sensing area is limited; the design adopts double sensitive elements, the temperature sensing area is large, the temperature sensing reliability is high, the structure is simple, and the production is easy.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
The objectives, features, and advantages of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, the electronic temperature probe with two sensors comprises a first sensor 1, a second sensor 2, four copper strips 3, four insulating sleeves 4, four protective sleeves 5, a metal probe 6, a first handle 7, a connecting wire 8, a second handle 9 and a DC plug 10; the pins of the first sensitive element 1 and the second sensitive element 2 are respectively penetrated with an insulating sleeve 4; the connecting wire 8 is internally provided with four lead wires 80, and each lead wire 80 is penetrated by a protective sleeve 5; one ends of four wires 80 of the connecting wire 8 are respectively connected with the pins of the first sensitive element 1 and the second sensitive element 2 through the copper strip 3; connecting the four wires 80 of the connecting wire 8 with the corresponding electrodes of the DC plug 10, respectively; the temperature sensing glass heads of the first sensing element 1 and the second sensing element 2 are coated with a proper amount of heat-conducting silicone grease and are arranged at the tip of the metal probe 6; performing pressure welding at the position of the opening end of the metal probe 6 to integrate the metal probe 6 and the connecting wire 8; performing injection molding on the opening end of the metal probe 6 by adopting a special injection molding machine, an auxiliary device and a sizing material to form the first handle 7; and (3) performing injection molding at the joint of the DC plug 10 and the connecting wire 8 by adopting a special injection molding machine, an auxiliary device and plastics to form the second handle 9.
As shown in fig. 1, the first sensing element 1 and the second sensing element 2 are ntc thermistors and are single-ended glass package thermistors.
As shown in fig. 1, the insulating sleeve 4 is made of teflon, is a halogen-free non-heat shrinkable sleeve, and is colorless and transparent.
As shown in fig. 1, the protective sleeve 5 is made of teflon, is a heat-shrinkable sleeve, and is colorless and transparent.
As shown in fig. 1, the metal probe 6 is made of stainless steel and has a second-order cylindrical thin-walled shell, one end of the metal probe 6 is closed sharply, the other end is open, and a flange is arranged at the open end.
As shown in fig. 1, the first handle 7 is made of silica gel and has a solid annular body in shape, the solid annular body has an extending end, the extending end has a cylindrical shape, and the solid annular body naturally extends to wrap the open end of the metal probe 6.
As shown in fig. 1, the second handle 9 is made of polyvinyl chloride and is shaped like a solid ring, and the solid ring has an extended end, and the extended end is shaped like a cylinder and naturally extends from the solid ring to wrap the connection electrode of the DC plug 10.
As shown in fig. 1, the connection line 8 is made of teflon, the outer surface of the connection line 8 is made of colorless transparent teflon, the four wires 80 are made of teflon, and the four wires 80 are made of black wire and white wire
As shown in fig. 1, the two black wires 80 are connected to the pins of the first sensor 1, and the two white wires 80 are connected to the pins of the second sensor 2.
The embodiment also provides a manufacturing method of the electronic temperature probe with the double sensitive elements, as shown in fig. 1, comprising the following steps:
a. Shearing the material: according to design requirements, a special shearing tool is adopted to shear the pins of the first sensitive element 1 and the second sensitive element 2 to required lengths; shearing the insulating sleeve 4 to a required length; cutting the protective sleeve 5 to a required length; and (3) cutting the connecting wire 8 to the required length by adopting a special wire cutting machine, and stripping and wicking the wire 80 inside.
b. Penetrating an insulating sleeve: and (4) according to design requirements, penetrating four insulating sleeves 4 after the step a on the pins of the first sensing element 1 and the second sensing element 2 after the step a.
c. And (3) penetrating a protective sleeve: and (c) threading the four protective sleeves 5 after the step a on the four wires 80 in the connecting wire 8 after the step a according to design requirements.
d. And (3) copper strip compression joint: c, pressing the two black leads 80 obtained in the step c and the pins of the first sensitive element 1 obtained in the step b together through a copper belt 3 by using a special pressing machine; and (4) pressing the two white leads 80 after the step c and the pins of the second sensitive element 2 after the step b together through the copper strip 3.
e. Positioning a protection sleeve: and d, adjusting the position of the protective sleeve 5 on the lead 80 after the step d to enable the protective sleeve 5 to cover the copper strip 3.
f. Thermal shrinkage of the protective sleeve: and e, placing the connecting wires 8 obtained in the step e on a turnover disc in sequence, placing the turnover disc in a tunnel type automatic baking device, and performing thermal shrinkage treatment on the protective sleeve 5.
g. Coating heat-conducting silicone grease: and (f) coating a proper amount of heat-conducting silicone grease on the temperature-sensitive glass heads of the first sensitive element 1 and the second sensitive element 2 after the step f by adopting a special coating tool.
h. And (3) crimping the metal probe: and g, placing the first sensitive element 1 and the second sensitive element 2 after the step g at the tip end of the metal probe 6, and adopting a special crimping machine and a tool fixture to crimp the connecting wire 80 and the metal probe 6 into a whole.
i.dc plug assembly connection: and (e) welding the other end of the lead 80 of the connecting wire after the step h and the corresponding electrode of the DC plug 10 together by using a special spot welding machine.
j. Injection molding of the first handle: and (3) performing injection molding on the first handle 7 at the opening end of the metal probe 6 after the step i by adopting a special injection molding machine, an auxiliary device, a tool clamp and a silica gel material.
k. Injection molding of a second handle: and (3) performing injection molding on the second handle 9 at the welding position of the DC plug 10 and the lead 80 after the step j by adopting a special injection molding machine, an auxiliary device, a tool clamp and a polyvinyl chloride material.
l, testing: and (e) performing appearance inspection standard, withstand voltage test and resistance test on the finished product obtained in the step k according to design requirements.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: it is to be understood that modifications may be made to the above-described arrangements in the embodiments or equivalents may be substituted for some of the features of the embodiments without departing from the spirit or scope of the present invention.
Claims (10)
1. An electronic temperature probe with double sensitive elements is characterized by comprising a first sensitive element (1), a second sensitive element (2), four copper strips (3), four insulating sleeves (4), four protective sleeves (5), a metal probe (6), a first handle (7), a connecting wire (8), a second handle (9) and a DC plug (10); the pins of the first sensitive element (1) and the second sensitive element (2) are respectively penetrated with an insulating sleeve (4); the connecting wire (8) is internally provided with four lead wires (80), and each lead wire (80) is penetrated by a protective sleeve (5); one ends of four wires (80) of the connecting wire (8) are respectively connected with pins of the first sensitive element (1) and the second sensitive element (2) through the copper strip (3); connecting the four wires (80) of the connecting wire (8) with corresponding electrodes of a DC plug (10) respectively; the temperature sensing glass heads of the first sensing element (1) and the second sensing element (2) are coated with a proper amount of heat-conducting silicone grease and are arranged at the tip ends of the metal probes (6); pressing the open end of the metal probe (6) to integrate the metal probe (6) and the connecting wire (8); performing injection molding on the opening end of the metal probe (6) by adopting a special injection molding machine, an auxiliary device and a sizing material to form the first handle (7); and (3) performing injection molding at the joint of the DC plug (10) and the connecting wire (8) by adopting a special injection molding machine, an auxiliary device and plastics to form the second handle (9).
2. The electronic temperature probe with double sensing elements as claimed in claim 1, wherein the first sensing element (1) and the second sensing element (2) are negative temperature coefficient thermistors and are single-ended glass package thermistors.
3. The electronic temperature probe with double sensing elements as claimed in claim 1, wherein the insulating sleeve (4) is made of teflon, is a halogen-free non-heat shrinkable sleeve, and is colorless and transparent.
4. The electronic temperature probe with double sensors of claim 1, wherein the protective sleeve (5) is made of teflon and is a heat-shrinkable sleeve, and the color is colorless and transparent.
5. The dual sensitive electronic temperature probe according to claim 1, wherein the metal probe (6) is made of stainless steel and has a two-stage cylindrical thin-walled shell, one end of the metal probe (6) is closed sharply, the other end is open, and a flange is arranged at the open end.
6. The electronic temperature probe with double sensitive elements according to claim 1, wherein the first handle (7) is made of silicone and is shaped as a solid ring, the solid ring has an extended end, the extended end is shaped as a cylinder and extends naturally from the solid ring to wrap the open end of the metal probe (6).
7. Electronic temperature probe with double sensors according to claim 1, characterized in that the second handle (9) is made of polythene and is shaped as a solid ring with an extended end shaped as a cylinder, which extends naturally from the solid ring and encloses the terminal electrodes of the DC plug (10).
8. The dual sensor-equipped electronic temperature probe according to claim 1, wherein the connecting wire (8) is a Teflon wire, the outer surface of the connecting wire (8) is colorless transparent Teflon, the four wires (80) are Teflon wires, and the four wires (80) are in two black and two white.
9. The electronic temperature probe with double sensors according to claim 8, wherein the two black wires (80) are connected to the pins of the first sensor (1) and the two white wires (80) are connected to the pins of the second sensor (2).
10. The method of claim 1, further comprising the steps of:
a. Shearing the material: according to design requirements, a special shearing tool is adopted to shear the pins of the first sensitive element (1) and the second sensitive element (2) to required lengths; shearing the insulating sleeve (4) to a required length; cutting the protective sleeve (5) to a required length; and a special wire cutting machine is adopted to cut the connecting wire (8) to the required length, and the head stripping and tin immersion treatment are carried out on the wire (80) inside.
b. Penetrating an insulating sleeve: and (b) according to design requirements, penetrating four insulating sleeves (4) after the step a on the pins of the first sensitive element (1) and the second sensitive element (2) after the step a.
c. And (3) penetrating a protective sleeve: and (c) according to design requirements, threading the four protective sleeves (5) after the step a on the four wires (80) in the connecting wire (8) after the step a.
d. And (3) copper strip compression joint: c, pressing the two black leads (80) obtained after the step c and the pins of the first sensitive element (1) obtained after the step b together by using a special pressing machine through a copper belt (3); and (c) pressing the two white leads (80) obtained after the step (c) and the pins of the second sensitive element (2) obtained after the step (b) together through a copper strip (3).
e. Positioning a protection sleeve: and d, adjusting the position of the protective sleeve (5) on the lead (80) after the step d to enable the protective sleeve (5) to cover the copper strip (3).
f. Thermal shrinkage of the protective sleeve: and e, placing the connecting wires (8) obtained after the step e on a turnover disc in sequence, placing the turnover disc in a tunnel type automatic baking device, and performing thermal shrinkage treatment on the protective sleeve (5).
g. Coating heat-conducting silicone grease: and (f) coating a proper amount of heat-conducting silicone grease on the temperature-sensitive glass heads of the first sensitive element (1) and the second sensitive element (2) after the step f by adopting a special coating tool.
h. and (3) crimping the metal probe: and g, placing the first sensitive element (1) and the second sensitive element (2) at the tip end of the metal probe (6), and adopting a special crimping machine and a tool clamp to crimp the connecting wire (80) and the metal probe (6) into a whole.
i.dc plug assembly connection: and (e) welding the other end of the lead (80) of the connecting wire obtained after the step h and a corresponding electrode of the DC plug (10) together by using a special spot welding machine.
j. Injection molding of the first handle: and (3) performing injection molding on the first handle (7) at the opening end of the metal probe (6) after the step i by adopting a special injection molding machine, an auxiliary device, a tool clamp and a silica gel material.
k. Injection molding of a second handle: and (3) performing injection molding on the second handle (9) at the welding position of the DC plug (10) and the lead (80) after the step j by adopting a special injection molding machine, an auxiliary device, a tool clamp and a polyvinyl chloride material.
l, testing: and (e) performing appearance inspection standard, withstand voltage test and resistance test on the finished product obtained in the step k according to design requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810557531.9A CN110553749A (en) | 2018-06-01 | 2018-06-01 | Electronic temperature probe with double sensitive elements and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810557531.9A CN110553749A (en) | 2018-06-01 | 2018-06-01 | Electronic temperature probe with double sensitive elements and manufacturing method thereof |
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| CN110553749A true CN110553749A (en) | 2019-12-10 |
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| CN206546218U (en) * | 2017-03-21 | 2017-10-10 | 深圳市科敏传感器有限公司 | A kind of circular surface mounts temperature sensor |
| CN206945166U (en) * | 2017-07-05 | 2018-01-30 | 杭州科美特传感器有限公司 | A kind of double thermistor ceramic silica gel combined electromagnetic stove temperature sensors |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201016808Y (en) * | 2007-03-02 | 2008-02-06 | 明高五金制品（深圳）有限公司 | Water-proof adjustable structure of explorer bimetal thermometer |
| KR20090068719A (en) * | 2007-12-24 | 2009-06-29 | 한국항공우주연구원 | Method for precise measuring the temperature of combustion gas with two thermocouples |
| CN201945401U (en) * | 2011-02-22 | 2011-08-24 | 肇庆爱晟电子科技有限公司 | High-precision three-wire double-probe quick-induction sensor |
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Application publication date: 20191210 |
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