CN219416496U - Temperature calibration device of microwave digestion instrument - Google Patents
Temperature calibration device of microwave digestion instrument Download PDFInfo
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- CN219416496U CN219416496U CN202320849340.6U CN202320849340U CN219416496U CN 219416496 U CN219416496 U CN 219416496U CN 202320849340 U CN202320849340 U CN 202320849340U CN 219416496 U CN219416496 U CN 219416496U
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- digestion instrument
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to the technical field of temperature detection of pretreatment equipment, in particular to a temperature calibration device of a microwave digestion instrument, which comprises an outer shell, a Peek material inner shell, a lining positioned between the outer shell and the inner shell and used for insulating heat, and a high-temperature resistant battery, an anode circuit board and a cathode circuit board which are arranged in a cavity in the Peek inner shell, wherein the outer shell is made of stainless steel capable of reflecting microwaves, so that the inner devices are effectively prevented from being damaged by the microwaves, meanwhile, the reflected microwaves are diffusely reflected and cannot accumulate at a certain point in the microwave digestion instrument, and damage to the microwave digestion instrument is avoided; by arranging the insulating and heat-insulating lining, the internal electric device is protected when the highest temperature reaches 200 ℃; through integrated structural design, reduce equipment volume, adapt multiple model and clear up the jar, can arrange a plurality of measuring points, not only carry out temperature accuracy and detect under the microwave digestion appearance service condition, can also carry out the detection of temperature field.
Description
Technical Field
The utility model relates to the technical field of temperature detection of pretreatment equipment, in particular to a temperature calibration device of a microwave digestion instrument.
Background
The microwave digestion instrument is an important device widely applied to pretreatment of heavy metal components and content detection of foods, medicines, water quality, agricultural products and the like, and is used for rapidly heating samples in a digestion tank by utilizing the action of a microwave magnetic field to achieve a sample digestion result, in the use process, the digestion tank belongs to a high-temperature and high-pressure closed environment, if temperature control is inaccurate or temperature field distribution is unreasonable, digestion is incomplete, the detection result is affected, or overtemperature and overpressure occur to cause explosion of the digestion tank to cause safety accidents, personnel injury and property loss, therefore, the microwave digestion instrument needs to be detected regularly, the main detection items are temperature indication errors and temperature field uniformity inside the digestion tank, and reliability and accuracy of temperature performance detection of the microwave digestion instrument are particularly important for evaluating the safety quality of the microwave digestion instrument, but because the digestion tank is in a microwave environment with the frequency of 2400-2500 Hz, a conventional temperature measurement sensor containing the metal components is rapidly heated in the microwave environment, and causes sparks and even explosions.
At present, the self temperature feedback of the microwave digestion instrument is based on contact temperature measurement or infrared temperature measurement, wherein the contact temperature measurement is to insert a thermometer, generally a platinum resistor or an optical fiber, equipped with one device into a main control digestion tank to monitor the internal temperature of the main control digestion tank, but only one of the main control digestion tank can be monitored, and the main control digestion tank cannot be found out when other digestion tanks are out of control, so that the temperature uniformity and the adaptability are poor; the infrared temperature measurement is to irradiate the bottom or the side surface of the digestion tank, the outside surface temperature is measured in the mode, the inside temperature of the digestion tank is obtained through compensation, the temperature measurement is not accurate enough, nitrogen oxides are easy to adsorb along with long-term use of the digestion tank, the digestion tank is heated, the compensation is invalid, the measured temperature is inaccurate, and the temperature measurement is controlled by the equipment rather than a third party, so that the temperature measurement and calibration device which is good in suitability, low in use cost and capable of recording the inside temperature of the digestion tank in the whole operation period under the operation state of the microwave digestion instrument is urgently needed, and the temperature indication error of the inside temperature of the digestion tank and the temperature uniformity among the digestion tank are evaluated.
Disclosure of Invention
The utility model discloses a temperature calibration device of a microwave digestion instrument, and aims to solve the technical problems in the prior art.
The utility model adopts the following technical scheme:
the temperature calibration device of the microwave digestion instrument is used for measuring the temperature of a digestion tank in the microwave digestion instrument and comprises a temperature probe unit and an electric control unit which are sealed and fixedly connected into a whole; a temperature sensor is arranged in the temperature probe unit; the electric control unit comprises an outer shell, an inner shell, a lining, a high-temperature-resistant battery, a positive electrode circuit board and a negative electrode circuit board, wherein the lining is positioned between the outer shell and the inner shell and used for insulating heat, the high-temperature-resistant battery is arranged in a cavity in the inner shell, and the positive electrode circuit board and the negative electrode circuit board are respectively connected with two ends of the high-temperature-resistant battery; the shell comprises a U-shaped body and a cover body which are detachably connected and used for reflecting microwaves, and the positive electrode circuit board is connected with the temperature sensor.
In some embodiments, the protruding end of the cover body is in matching engagement with the recessed end of the inner housing, and the cover body and the body are connected to each other by a sealing ring, so that when the cover body is connected to the inner housing, the cover body is pressed against the sealing ring, and the calibration device is in a sealed state.
In some embodiments, the body and the inner housing are provided with a gap at the bottom of the U-shape.
In some embodiments, an acquisition circuit, an ADC conversion circuit and a storage circuit for acquiring data are sealed and fixed in the positive circuit board, and the positive circuit board is connected to the temperature sensor through a wire.
In some embodiments, the negative electrode circuit board is connected with the positive electrode circuit board through a wire, a transmitting circuit for transmitting data and a hall communication module are fixedly and hermetically arranged in the negative electrode circuit board, and the hall communication module is placed towards an inner shell body which is set to be peek, so that wireless communication data transmission with a computer is realized when the end part of the inner shell body is connected with an external interface in a matching way.
In some embodiments, the temperature probe unit includes a temperature probe and a temperature sensor encapsulated within the temperature probe by a thermally conductive silicone grease.
In some embodiments, the total length H of the calibration device should satisfy: h is more than or equal to 70mm and less than or equal to 73mm, wherein the length L of the temperature probe is more than or equal to 3mm and less than or equal to 6mm, and the diameter D is more than or equal to 20mm.
The beneficial effects are that:
compared with the prior art, the temperature calibration device of the microwave digestion instrument has the following advantages:
the temperature probe unit comprises an outer shell, an inner shell and a lining, wherein the lining is positioned between the outer shell and the inner shell and is used for insulating heat, the outer shell is made of stainless steel and is in sealing design, so that the damage of the internal devices by microwaves is avoided, meanwhile, reflected microwaves are diffusely reflected and cannot accumulate at a certain point in the microwave digestion instrument, and the microwave digestion instrument is damaged; the insulation and heat insulation lining is arranged between the Peek inner shell and the stainless steel outer shell and is used for measuring when the highest temperature reaches 200 ℃, so that the internal high-temperature-resistant lithium battery, the circuit board and the devices are protected; the high-temperature-resistant battery, the positive electrode circuit board and the negative electrode circuit board which are respectively connected with the two ends of the high-temperature-resistant battery are arranged in the cavity of the Peek inner shell, the positive electrode circuit board is connected with the temperature sensor in the probe, a circuit arranged on the circuit board comprises a collecting circuit, a transmitting circuit and a Hall communication module, the volume of the equipment is reduced through integrated structural design, various types of digestion tanks with 30-200 mL are adapted, a plurality of measuring points can be arranged in the microwave digestion instrument according to actual requirements, temperature accuracy detection can be carried out in the use state of the microwave digestion instrument, and temperature field detection can be carried out more accurately; when data are read, the cover body can be unscrewed, the groove end arranged on the inner shell body is directly placed on the interface, equipment connection and control are realized through the Hall effect, and the accuracy, reliability and stability of temperature acquisition are ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments are briefly described below to form a part of the present utility model, and the exemplary embodiments of the present utility model and the description thereof illustrate the present utility model and do not constitute undue limitations of the present utility model; in the drawings:
FIG. 1 is a schematic structural diagram of a technical scheme of a temperature calibration device of a microwave digestion instrument according to an embodiment of the present utility model;
fig. 2 is a section A-A of fig. 1.
In the figure:
a temperature probe 1, a temperature sensor 2, an outer shell 3, a cover 31, a body 32; protruding end 311, inner shell 4, groove end 41, interface end 42, positive electrode circuit board 5, cavity 6, inner lining 7, wire 8, high temperature resistant battery 9, negative electrode circuit board 10, chamber 11, gap 12; an O-ring seal 13; and a thermally conductive silicone grease 14.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to specific embodiments of the present utility model and corresponding drawings. In the description of the present utility model, it should be noted that, as used in the specification and the claims, the term "comprising" is an open-ended term, and thus should be interpreted to mean "including, but not limited to"; "number" means more than 2.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
As shown in fig. 1-2, the technical scheme of the utility model comprises:
the temperature calibration device of the microwave digestion instrument is used for measuring the temperature of a digestion tank in the microwave digestion instrument and comprises a temperature probe unit and an electric control unit which are sealed and fixedly connected into a whole; the temperature probe unit comprises a temperature probe 1 and a temperature sensor 2 arranged in the temperature probe unit; the electric control unit comprises an outer shell 3, an inner shell 4 and a lining 7, wherein the lining 7 is positioned between the outer shell 3 and the inner shell 4 and used for insulating heat, a high-temperature-resistant battery 9 and a positive electrode circuit board 5 and a negative electrode circuit board 10 respectively connected with two ends of the high-temperature-resistant battery 9 are arranged in a cavity 6 in the inner shell 4, the positive electrode circuit board 5 is connected with the temperature sensor 2 through a wire 8, and the outer shell 3 comprises a U-shaped body 32 and a cover 31 which are detachably connected and used for reflecting microwaves.
The preferred embodiment of the present utility model is shown in fig. 1-2:
a temperature calibration device of a microwave digestion instrument is used for measuring the temperature of a digestion tank in the microwave digestion instrument and comprises a temperature probe unit and an electric control unit which are fixedly connected into a whole through sealing.
The temperature probe unit comprises a temperature probe 1 and a temperature sensor 2 arranged in the temperature probe unit, wherein the temperature sensor 2 is encapsulated in the temperature sensor 2 through heat-conducting silicone grease 14.
The electric control unit comprises an outer shell 3, an inner shell 4 and a lining 7 positioned between the outer shell 3 and the inner shell 4 and used for insulating heat, wherein a positive electrode circuit board 5, a high-temperature-resistant battery 9 and a negative electrode circuit board 10 are sequentially arranged in a cavity 6 in the inner shell 4 from top to bottom, the positive electrode circuit board 5 and the negative electrode circuit board 10 are respectively connected with two ends of the high-temperature-resistant battery 9, the positive electrode circuit board 5 and the negative electrode circuit board 10 are connected through a wire 8, and the positive electrode circuit board 5 penetrates through a cavity 11 through the wire 8 and is connected with the temperature sensor 2.
The outer shell 3 comprises a U-shaped body 32 and a cover 31 which are detachably connected, the outer shell 3 is made of stainless steel materials capable of reflecting microwaves, the body 32 and the cover 31 can be connected through threads, a gap 12 is formed in the bottom of the U-shaped body 32 and the inner shell 4, and a very effective heat insulation function can be achieved through the design of an insulating and heat-insulating lining 7 and the gap 12. The stainless steel material is made into the outer shell 3, so that the microwave is prevented from damaging all devices in the microwave digestion instrument, meanwhile, reflected microwaves are diffusely reflected, and the microwaves cannot accumulate at a certain point in the microwave digestion instrument, so that the microwave digestion instrument is damaged.
In this embodiment, the protruding end 311 of the cover 31 is engaged with the recessed end 41 of the inner housing 4, and the cover 31 and the body 32 are connected to form an O-ring 13, so that when the cover 31 is connected to the inner housing 4, the cover 31 is pressed against the O-ring 13, so that the calibration device is in a sealed state.
In this embodiment, the collecting circuit, the ADC conversion circuit and the storage circuit for collecting data are reinforced and sealed by the dakangning 3104RTV coating in the positive circuit board 5, the positive circuit board 5 is connected to the temperature sensor 2 by the wires 8, and the positive circuit board 5 is used as the collecting circuit board for obtaining temperature data.
In this embodiment, the negative electrode circuit board 10 is connected with the positive electrode circuit board 5 through a wire 8, a transmitting circuit for transmitting data and a hall communication module are reinforced and sealed in the negative electrode circuit board 10 through a dao-corning 3104RTV coating, and the hall communication module is placed towards the inner shell 4 made of peek, so that when data is read from the device, that is, when the interface end 42 at the end of the inner shell 4 is connected with an external interface in a matching manner, wireless communication data transmission with a computer is realized, that is, the negative electrode circuit board 10 is used as the transmitting circuit board for transmitting temperature data.
In this embodiment, the temperature probe unit includes a temperature probe 1 and a temperature sensor 2, and the temperature sensor 2 is encapsulated in the temperature probe 1 by a heat conductive silicone grease 14.
In this embodiment, the total length H of the calibration device should satisfy: h is more than or equal to 70mm and less than or equal to 73mm, wherein the length L of the temperature probe 1 is more than or equal to 3mm and less than or equal to 6mm, the diameter D is more than or equal to 20mm, the volume of the equipment is reduced through integrated structural design, various types of digestion tanks with 30-200 mL are adapted, a plurality of measuring points can be arranged in the microwave digestion instrument according to actual requirements, and the temperature accuracy detection can be carried out in the use state of the microwave digestion instrument, and the temperature field detection can be carried out more accurately.
The data acquisition process comprises the following steps:
placing 10mL of pure water in the microwave digestion tank, placing the temperature probe 1 of the calibration device downwards inside the digestion tank of the measured microwave digestion instrument, immersing the temperature probe 1 by pure water, assembling the digestion tank according to normal use, placing the digestion tank on a turntable of the microwave digestion instrument in a symmetrical and uniformly distributed mode, placing the turntable in an internal turntable frame of the microwave digestion instrument, closing a door of the microwave digestion instrument, setting digestion temperature and digestion time to be calibrated, starting the microwave digestion instrument, and acquiring and recording all temperature data of the whole microwave digestion process in the whole process by the calibration device.
The data reading process comprises the following steps:
the stainless steel cover body 31 is unscrewed, the interface end 42 of the PEEK inner shell body 4 is placed on a preset outer interface and connected through a computer software system, a sampling interval is set to be 1s, the working time is 3h, a temperature calibration device is started, all recorded temperature data can be read through software, data analysis is automatically carried out, and the internal temperature indication errors of the digestion tanks and the temperature uniformity of each digestion tank are obtained.
The embodiments of the present utility model have been described above with reference to the accompanying drawings, but the present utility model is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present utility model and the scope of the claims, which are to be protected by the present utility model.
Claims (7)
1. A temperature calibration device of a microwave digestion instrument is used for measuring the temperature of a digestion tank in the microwave digestion instrument, and is provided with a temperature measuring device
Is characterized in that: comprises a temperature probe unit and an electric control unit which are sealed and fixedly connected into a whole;
a temperature sensor is arranged in the temperature probe unit;
the electric control unit comprises an outer shell, an inner shell, a lining, a high-temperature-resistant battery, a positive electrode circuit board and a negative electrode circuit board, wherein the lining is positioned between the outer shell and the inner shell and used for insulating heat, the high-temperature-resistant battery is arranged in a cavity in the inner shell, and the positive electrode circuit board and the negative electrode circuit board are respectively connected with two ends of the high-temperature-resistant battery;
the shell comprises a U-shaped body and a cover body which are detachably connected and used for reflecting microwaves, and the positive electrode circuit board is connected with the temperature sensor.
2. The microwave digestion instrument temperature calibration device according to claim 1, wherein: the protruding end that the lid was equipped with the recess end that the inner shell was equipped with matches the joint, the lid with body coupling is in and is equipped with the sealing washer, makes when the lid with the inner shell is connected, the lid compresses tightly on the sealing washer, makes calibrating device be in sealed state.
3. The microwave digestion instrument temperature calibration device according to claim 2, wherein: the body with the bottom of interior casing in the U type is equipped with the clearance.
4. A microwave digestion instrument temperature calibration device according to claim 3, wherein: the positive electrode circuit board is fixedly and hermetically provided with an acquisition circuit, an ADC conversion circuit and a storage circuit, wherein the acquisition circuit, the ADC conversion circuit and the storage circuit are used for acquiring data, and the positive electrode circuit board is connected with the temperature sensor through a wire.
5. The temperature calibration device of a microwave digestion instrument according to claim 4, wherein: the negative electrode circuit board is connected with the positive electrode circuit board through a wire, a transmitting circuit for transmitting data and a Hall communication module are fixedly and hermetically arranged in the negative electrode circuit board, and the Hall communication module is placed towards an inner shell body which is designed to be peek, so that wireless communication data transmission with a computer is realized when the end part of the inner shell body is connected with an external interface in a matching way.
6. The microwave digestion instrument temperature calibration device according to claim 1, wherein: the temperature probe unit comprises a temperature probe and a temperature sensor, and the temperature sensor is encapsulated in the temperature probe through heat conduction silicone grease.
7. The microwave digestion instrument temperature calibration apparatus according to any one of claims 1-6, wherein: the total length H of the calibration device should satisfy: h is more than or equal to 70mm and less than or equal to 73mm, wherein the length L of the temperature probe is more than or equal to 3mm and less than or equal to 6mm, and the diameter D is more than or equal to 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320849340.6U CN219416496U (en) | 2023-04-17 | 2023-04-17 | Temperature calibration device of microwave digestion instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320849340.6U CN219416496U (en) | 2023-04-17 | 2023-04-17 | Temperature calibration device of microwave digestion instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219416496U true CN219416496U (en) | 2023-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320849340.6U Active CN219416496U (en) | 2023-04-17 | 2023-04-17 | Temperature calibration device of microwave digestion instrument |
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| Country | Link |
|---|---|
| CN (1) | CN219416496U (en) |
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2023
- 2023-04-17 CN CN202320849340.6U patent/CN219416496U/en active Active
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