CN203718854U - IGBT temperature measuring device applied to induction cooker as well as induction cooker - Google Patents
IGBT temperature measuring device applied to induction cooker as well as induction cooker Download PDFInfo
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- CN203718854U CN203718854U CN201320723895.2U CN201320723895U CN203718854U CN 203718854 U CN203718854 U CN 203718854U CN 201320723895 U CN201320723895 U CN 201320723895U CN 203718854 U CN203718854 U CN 203718854U
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- 238000001514 detection method Methods 0.000 abstract description 4
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- 230000003685 thermal hair damage Effects 0.000 description 10
- 229920003266 Leaf® Polymers 0.000 description 8
- 238000009434 installation Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
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- 238000005266 casting Methods 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 1
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Abstract
The utility model provides an IGBT temperature measuring device applied to an induction cooker as well as the induction cooker. The IGBT temperature measuring device applied to the induction cooker comprises a temperature sensor, wherein the temperature sensor is in contact with the surface of an IGBT. According to the IGBT temperature measuring device applied to the induction cooker provided by the utility model, the temperature sensor has direct contact with the surface of the IGBT, so that the temperature sensor can be used for rapidly and accurately measuring the temperature of the IGBT in real time, occurrence of damage of the IGBT due to overheat caused by untimely response of a detection circuit and a protective circuit because of retardance of temperature detection of the temperature sensor is avoided, and the reliability of the induction cooker in use is improved effectively.
Description
Technical field
The utility model relates to household appliance technical field, in particular to IGBT temperature measuring equipment and a kind of electromagnetic oven for a kind of electromagnetic oven.
Background technology
At present, IGBT(is: insulated gate bipolar transistor) detection mode of temperature generally: the heat on IGBT surface is delivered to the thermistor as temperature sensor by conducting piece, and thermistor feeds back the temperature of IGBT indirectly by detecting the temperature of conducting piece.Its scheme is that the thermistor that detects IGBT temperature is pressed on the radiator to IGBT heat radiation by sensor holder, feeds back the temperature of IGBT by the temperature on detection radiator; Or after thermistor encapsulation, be connected with sheet metal, sheet metal fixes on IGBT surface by screwed lock, realizes IGBT heat and is transmitted on sheet metal, feeds back the temperature of IGBT by measuring the temperature of sheet metal; Or the earth terminal pin of thermistor and the E of IGBT are extremely directly welded together, realize the transmission of IGBT temperature.Above-described thermistor temperature detecting mode, thermistor is all measured the temperature of IGBT indirectly, and temperature transmission has delay and loss, can not detect rapidly and accurately the temperature on IGBT.And in the time that electromagnetic oven operation irregularity, IGBT temperature rise rapidly, because the detected temperature of thermistor has serious retardance, temperature sensing circuit and holding circuit can not respond in time, will cause IGBT to cross cause thermal damage.
Utility model content
For solving the problems of the technologies described above or one of at least; the utility model provides a kind of electromagnetic oven IGBT temperature measuring equipment; temperature sensor is directly contacted with the surface of IGBT; so that temperature sensor is measured the temperature of IGBT fast, in real time, accurately, can avoid occurring causing testing circuit and holding circuit response to make not in time IGBT cross the phenomenon generation of cause thermal damage because the temperature that temperature sensor detects has retardance.
In view of this, the utility model first aspect embodiment provides a kind of electromagnetic oven IGBT temperature measuring equipment, comprising: temperature sensor, described temperature sensor contacts with the surface of described IGBT.
The electromagnetic oven that the utility model provides IGBT temperature measuring equipment; temperature sensor is directly contacted with the surface of IGBT; so that temperature sensor is measured the temperature of IGBT fast, in real time, accurately, can avoid occurring causing testing circuit and holding circuit response to make not in time IGBT cross the phenomenon generation of cause thermal damage because the temperature that temperature sensor detects has retardance.
In addition, can also there is following additional technical characterictic according to the electromagnetic oven of the utility model above-described embodiment with IGBT temperature measuring equipment:
According to an embodiment of the present utility model, described electromagnetic oven also comprises sensor holder with IGBT temperature measuring equipment, and described temperature sensor is fixed on described IGBT by described sensor holder.
In the present embodiment, it is upper that temperature sensor is fixed on IGBT by sensor holder, can avoid directly temperature sensor being fixed on IGBT and above damage temperature sensor, is conducive to the in enormous quantities installation of temperature sensor on production line and fixes.
According to an embodiment of the present utility model, described sensor holder is provided with holding tank on the face of described IGBT, and described temperature sensor is positioned at described holding tank and is pressed on the surface of described IGBT.
In the present embodiment, temperature sensor is arranged in the holding tank on sensor holder, and holding tank can be protected temperature sensor, avoids colliding with and damaging after temperature sensor installation.
According to an embodiment of the present utility model, on described sensor holder, be also provided with passing channel, described passing channel is connected with described holding tank, and the pin of described temperature sensor stretches out described sensor holder along described passing channel.
In the present embodiment, the pin of temperature sensor stretches out after sensor holder along passing channel, is connected with temperature sensing circuit, and temperature sensing circuit can carry out power-off protection to IGBT by holding circuit, avoids IGBT to cross cause thermal damage.
According to an embodiment of the present utility model, described passing channel is cable-through hole or crossed beam trunking.
Over-temperature channel is cable-through hole or crossed beam trunking, can make by machined or casting, to reduce the manufacturing cost of sensor holder.
According to an embodiment of the present utility model, it is upper that described sensor holder is fixed by screws in described IGBT, to realize fixedly securing sensor holder.
According to an embodiment of the present utility model, described temperature sensor compresses on the surface of described IGBT by spring leaf, and wherein, it is upper that spring leaf one end is fixed on IGBT, and the other end is pressed on temperature sensor.
According to an embodiment of the present utility model, one end of described spring leaf is stuck on the radiator of described IGBT, the other end is pressed on described temperature sensor, and Spring Card, on the radiator of IGBT, can be avoided causing the phenomenon that IGBT damages to occur because unbalance stress appears in lock-screw on IGBT.
According to an embodiment of the present utility model, described temperature sensor is thermistor or thermocouple.
The utility model second aspect embodiment provide a kind of electromagnetic oven, comprising: housing; Control mainboard, be fixed in described housing; With the electromagnetic oven IGBT temperature measuring equipment described in the utility model first aspect embodiment, described electromagnetic oven is arranged in described housing with IGBT temperature measuring equipment, and described temperature sensor and described IGBT are electrically connected with described control mainboard.
The electromagnetic oven that the utility model provides; temperature sensor can be measured the temperature of IGBT fast, in real time, accurately; there is with the temperature of avoiding appearance to detect because of temperature sensor the phenomenon generation that retardance causes testing circuit and holding circuit response to make not in time IGBT cross cause thermal damage, improved the dependability of electromagnetic oven.
In sum; the electromagnetic oven that the utility model provides IGBT temperature measuring equipment; temperature sensor is directly contacted with the surface of IGBT; so that temperature sensor is measured the temperature of IGBT fast, in real time, accurately, can avoid occurring causing testing circuit and holding circuit response to make not in time IGBT cross the phenomenon generation of cause thermal damage because the temperature that temperature sensor detects has retardance.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model electromagnetic oven IGBT temperature measuring equipment one embodiment;
Fig. 2 is the perspective view after the assembling of temperature sensor and sensor holder in Fig. 1;
Fig. 3 is the partial structurtes schematic diagram of another embodiment of the utility model electromagnetic oven IGBT temperature measuring equipment.
Wherein, in Fig. 1 to Fig. 3, the corresponding relation between Reference numeral and component names is:
1 temperature sensor, 2 sensor holders, 21 holding tanks, 22 cross line groove, 3 spring leafs, 4 radiators, 5 insulated gate bipolar transistors.
Detailed description of the invention
In order more clearly to understand above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the drawings and specific embodiments, the utility model is further described in detail.It should be noted that, in the situation that not conflicting, the feature in the application's embodiment and embodiment can combine mutually.
A lot of details are set forth in the following description so that fully understand the utility model; but; the utility model can also adopt other to be different from mode described here and implement, and therefore, protection domain of the present utility model is not subject to the restriction of following public specific embodiment.
As shown in Figure 2, the electromagnetic oven that the utility model provides IGBT temperature measuring equipment, comprising: temperature sensor 1, temperature sensor 1 contacts with the surface of IGBT.
The electromagnetic oven that the utility model provides IGBT temperature measuring equipment; temperature sensor is directly contacted with the surface of IGBT; so that temperature sensor is measured the temperature of IGBT fast, in real time, accurately, can avoid occurring causing testing circuit and holding circuit response to make not in time IGBT cross the phenomenon generation of cause thermal damage because the temperature that temperature sensor detects has retardance.
Wherein, IGBT is insulated gate bipolar transistor 5.
In addition, can also there is following additional technical characterictic according to the electromagnetic oven of the utility model above-described embodiment with IGBT temperature measuring equipment:
In an embodiment of the present utility model, as shown in Figure 1 to Figure 3, electromagnetic oven also comprises sensor holder 2 with IGBT temperature measuring equipment, and temperature sensor 1 is fixed on IGBT by sensor holder 2.
In the present embodiment, it is upper that temperature sensor is fixed on IGBT by sensor holder, can avoid directly temperature sensor being fixed on IGBT and above damage temperature sensor, is conducive to the in enormous quantities installation of temperature sensor on production line and fixes.
In an embodiment of the present utility model, as shown in Figure 2, sensor holder 2 is provided with holding tank 21 on the face of IGBT, and temperature sensor 1 is positioned at holding tank 21 and is pressed on the surface of IGBT.
In the present embodiment, temperature sensor is arranged in the holding tank on sensor holder, and holding tank can be protected temperature sensor, avoids colliding with and damaging after temperature sensor installation.
In an embodiment of the present utility model, as shown in Figure 1, be also provided with passing channel 22 on sensor holder 2, passing channel 22 is connected with holding tank 21, and the pin of temperature sensor 1 stretches out sensor holder 2 along passing channel 22.
In the present embodiment, the pin of temperature sensor stretches out after sensor holder along passing channel, is connected with temperature sensing circuit, and temperature sensing circuit can carry out power-off protection to IGBT by holding circuit, avoids IGBT to cross cause thermal damage.
In an embodiment of the present utility model, passing channel 22 is cable-through hole or crossed beam trunking.
Over-temperature channel is cable-through hole or crossed beam trunking, can make by machined or casting, to reduce the manufacturing cost of sensor holder.
Wherein, cable-through hole can be circular port, square opening etc.; Crossed beam trunking can be dovetail groove, deep-slotted chip breaker etc.; All can realize the purpose of this utility model, its aim does not depart from design philosophy of the present utility model, should belong to the application's protection domain.
In an embodiment of the present utility model, as shown in Figure 1, it is upper that sensor holder 2 is fixed by screws in IGBT, to realize fixedly securing sensor holder 2.
Above-described embodiment can be also: temperature sensor 1 is pressed on (not shown) on the surface of IGBT by spring leaf 3, and wherein, it is upper that spring leaf 3 one end are fixed on IGBT, and the other end is pressed on temperature sensor 1.
Preferably, one end of spring leaf 3 is stuck on the radiator 4 of IGBT, and the other end is pressed on temperature sensor 1, and Spring Card, on the radiator 4 of IGBT, can be avoided causing the phenomenon that IGBT damages to occur because unbalance stress appears in lock-screw on IGBT.
Certainly, also can be that temperature sensor 1 is arranged on IGBT above by sensor holder 2, IGBT be arranged on radiator 4, and spring leaf 3 one end are stuck on the radiator 4 of IGBT, the other end is pressed on (as shown in Figure 3) on sensor holder 2, also can realize the application's object.
In an embodiment of the present utility model, temperature sensor 1 is thermistor or thermocouple etc.
The utility model also provides a kind of electromagnetic oven (not shown), comprising: housing; Control mainboard, be fixed in housing; With the electromagnetic oven IGBT temperature measuring equipment described in above-mentioned arbitrary embodiment, electromagnetic oven is arranged in housing with IGBT temperature measuring equipment, and temperature sensor 1 and IGBT are electrically connected with control mainboard.
The electromagnetic oven that the utility model provides; temperature sensor can be measured the temperature of IGBT fast, in real time, accurately; there is with the temperature of avoiding appearance to detect because of temperature sensor the phenomenon generation that retardance causes testing circuit and holding circuit response to make not in time IGBT cross cause thermal damage, improved the dependability of electromagnetic oven.
In sum; the electromagnetic oven that the utility model provides IGBT temperature measuring equipment; temperature sensor is directly contacted with the surface of IGBT; so that temperature sensor is measured the temperature of IGBT fast, in real time, accurately, can avoid occurring causing testing circuit and holding circuit response to make not in time IGBT cross the phenomenon generation of cause thermal damage because the temperature that temperature sensor detects has retardance.
In the utility model, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " all should be interpreted broadly, for example, " connection " can be to be fixedly connected with, and can be also to removably connect, or connects integratedly; Can be to be directly connected, also can indirectly be connected by intermediary.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term in the utility model.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (9)
1. an electromagnetic oven IGBT temperature measuring equipment, is characterized in that, comprising:
Temperature sensor, described temperature sensor contacts with the surface of described IGBT; With
Sensor holder, described temperature sensor is fixed on described IGBT by described sensor holder.
2. electromagnetic oven according to claim 1 IGBT temperature measuring equipment, is characterized in that,
Described sensor holder is provided with holding tank on the face of described IGBT, and described temperature sensor is positioned at described holding tank and is pressed on the surface of described IGBT.
3. electromagnetic oven according to claim 2 IGBT temperature measuring equipment, is characterized in that,
On described sensor holder, be also provided with passing channel, described passing channel is connected with described holding tank, and the pin of described temperature sensor stretches out described sensor holder along described passing channel.
4. electromagnetic oven according to claim 3 IGBT temperature measuring equipment, is characterized in that,
Described passing channel is cable-through hole or crossed beam trunking.
5. electromagnetic oven according to claim 4 IGBT temperature measuring equipment, is characterized in that,
Described sensor holder is fixed by screws on described IGBT.
6. electromagnetic oven according to claim 1 IGBT temperature measuring equipment, is characterized in that,
Described temperature sensor compresses on the surface of described IGBT by spring leaf.
7. electromagnetic oven according to claim 6 IGBT temperature measuring equipment, is characterized in that,
One end of described spring leaf is stuck on the radiator of described IGBT, and the other end is pressed on described temperature sensor.
8. according to the electromagnetic oven IGBT temperature measuring equipment described in any one in claim 1-7, it is characterized in that, described temperature sensor is thermistor or thermocouple.
9. an electromagnetic oven, is characterized in that, comprising:
Housing;
Control mainboard, be fixed in described housing; With
Electromagnetic oven IGBT temperature measuring equipment as described in any one in claim 1-8, described electromagnetic oven is arranged in described housing with IGBT temperature measuring equipment, and described temperature sensor and described IGBT are electrically connected with described control mainboard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320723895.2U CN203718854U (en) | 2013-11-13 | 2013-11-13 | IGBT temperature measuring device applied to induction cooker as well as induction cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320723895.2U CN203718854U (en) | 2013-11-13 | 2013-11-13 | IGBT temperature measuring device applied to induction cooker as well as induction cooker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203718854U true CN203718854U (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320723895.2U Expired - Lifetime CN203718854U (en) | 2013-11-13 | 2013-11-13 | IGBT temperature measuring device applied to induction cooker as well as induction cooker |
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| CN (1) | CN203718854U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108181018A (en) * | 2018-01-12 | 2018-06-19 | 佛山市深宜达电器有限公司 | Power tube temperature-detecting device and electromagnetic oven |
| CN108731039A (en) * | 2017-04-13 | 2018-11-02 | 浙江绍兴苏泊尔生活电器有限公司 | Method for detecting working state of temperature sensor and induction cooker |
| CN109103849A (en) * | 2018-08-22 | 2018-12-28 | 珠海格力电器股份有限公司 | A kind of overtemperature protection system, motor and its method for excessive heating protection |
| CN109413767A (en) * | 2017-08-16 | 2019-03-01 | 佛山市顺德区美的电热电器制造有限公司 | Electric heater unit and its IGBT method for excessive heating protection |
-
2013
- 2013-11-13 CN CN201320723895.2U patent/CN203718854U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108731039A (en) * | 2017-04-13 | 2018-11-02 | 浙江绍兴苏泊尔生活电器有限公司 | Method for detecting working state of temperature sensor and induction cooker |
| CN109413767A (en) * | 2017-08-16 | 2019-03-01 | 佛山市顺德区美的电热电器制造有限公司 | Electric heater unit and its IGBT method for excessive heating protection |
| CN109413767B (en) * | 2017-08-16 | 2021-01-26 | 佛山市顺德区美的电热电器制造有限公司 | Electric heating device and IGBT overheating protection method thereof |
| CN108181018A (en) * | 2018-01-12 | 2018-06-19 | 佛山市深宜达电器有限公司 | Power tube temperature-detecting device and electromagnetic oven |
| CN109103849A (en) * | 2018-08-22 | 2018-12-28 | 珠海格力电器股份有限公司 | A kind of overtemperature protection system, motor and its method for excessive heating protection |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140716 |