CN202074803U - Microwave drying temperature control device and temperature sensor thereof - Google Patents
Microwave drying temperature control device and temperature sensor thereof Download PDFInfo
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- CN202074803U CN202074803U CN2011201439164U CN201120143916U CN202074803U CN 202074803 U CN202074803 U CN 202074803U CN 2011201439164 U CN2011201439164 U CN 2011201439164U CN 201120143916 U CN201120143916 U CN 201120143916U CN 202074803 U CN202074803 U CN 202074803U
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Abstract
The utility model discloses a microwave drying temperature control device and a temperature sensor thereof, which relate to the microwave drying technology. The microwave drying temperature control device is capable of realizing intermittent and constant-temperature drying functions, and the temperature sensor is capable of working in a microwave environment. The technical scheme mainly includes that the microwave drying temperature control device comprises a drying chamber shell, a microwave heater, a controller, a relay controller and the temperature sensor, wherein the microwave heater and the temperature sensor are positioned inside the drying chamber shell, the controller is used for receiving temperature signals output by the temperature sensor and controlling starting and closing of the microwave heater through the relay controller according to the temperature signals, and the temperature sensor is packaged in a metal shell. The microwave drying temperature control device is mainly used for food processing and drying.
Description
Technical field
The utility model relates to microwave drying technology, especially a kind of microwave drying attemperating unit and temperature sensing device thereof.
Background technology
Along with the modernization development of industrial or agricultural, particularly food processing drying of association area has proposed more and more stricter requirement to corresponding dry technology and equipment.
Traditional drying means specific energy consumption height such as existing heated-air drying, inefficiency, and heat inhomogeneous; Emerging mode such as infrared drying is of limited application, and cost is high, is difficult to extensively be promoted.
By contrast, micro-wave drying have that speed is fast, homogeneous heating, good product quality, control sensitivity, advantage such as easy to operate.Since temperature sensor under microwave environment because of eddy current effect and kelvin effect cisco unity malfunction, existing microwave dryer is difficult for realizing intermittent drying, can not realize freeze-day with constant temperature, to cause thing temperature to be dried to rise is exceedingly fast, the drying quality of thing to be dried also has bigger fluctuation, even crop can produce inner burnt phenomenon of sticking with paste sometimes, therefore can not promote the use of on a large scale.
The utility model content
Goal of the invention of the present utility model is to provide a kind of can realize the microwave drying attemperating unit of batch (-type), freeze-day with constant temperature function and the temperature sensing device that can work in microwave environment.
The technical scheme that microwave drying attemperating unit in the utility model adopts is such: comprise hothouse housing, microwave applicator, controller, relay controller, temperature sensor, described microwave applicator and temperature sensor are positioned at the hothouse enclosure interior;
Controller has heating control signal output, temperature signal receiving terminal; The temperature signal receiving terminal of described controller is connected with the signal output part of temperature sensor; The heating control signal output of described controller is connected with microwave applicator by relay controller;
Described temperature sensor is encapsulated in the metal shell.
The supplementary technology scheme of microwave drying attemperating unit is in the utility model:
Preferably, described metal shell is made up of a cylindrical, copper jar and a hemispherical copper shell, described temperature sensor places the cylindrical, copper jar, the lower edge of described hemispherical copper shell matches with size with cylindrical, copper jar opening shape, the hemispherical copper shell is placed on the cylindrical, copper jar, and on the hemispherical copper shell perforate is arranged, the lead-in wire on the sensor is drawn from tapping.
Preferably, also comprise temperature display circuit, described controller has the temperature data output, and described temperature data output is connected with temperature display circuit.
Preferably, also comprise alarm, described controller has alarm signal output ends, and described alarm signal output ends is connected with alarm.
Preferably, also comprise electronic balance, the pallet of described electronic balance places the hothouse housing, and described electronic balance has the weight signal output, described controller also has the weight signal receiving terminal, and the weight signal output of described electronic balance is connected with the weight signal receiving terminal of controller.
The main technical schemes that the temperature sensing device that is used for the microwave drying attemperating unit in the utility model adopts is such, comprises temperature sensor, and described temperature sensor is encapsulated in the metal shell.
The supplementary technology that the temperature sensing device that is used for the microwave drying attemperating unit in the utility model adopts is, described metal shell is made up of a cylindrical, copper jar and a hemispherical copper shell, described temperature sensor places the cylindrical, copper jar, the lower edge of described hemispherical copper shell matches with size with cylindrical, copper jar opening shape, the hemispherical copper shell is placed on the cylindrical, copper jar, and on the hemispherical copper shell perforate is arranged, the lead-in wire on the sensor is drawn from tapping.
In sum, owing to adopted technique scheme, the utility model beneficial effect is:
1, in order to realize the application of sensor under the microwave field environment, the utility model has carried out the metal shell encapsulation process to the temperature sensor that is adopted, and has realized the application of temperature sensor under the microwave field environment, and guarantees that its temperature measurement accuracy is at ± 0.5 ℃.
2, the microwave drying attemperating unit in the utility model has digital display system, controller reads real time temperature, this temperature value and range of set temperature value are compared, when temperature is higher than the value of setting (higher limit), alarm will produce warning, closes the working power of microwave applicator simultaneously.When temperature is lower than the value of setting (lower limit), microwave applicator is reworked, thereby has realized the working power of automatic disconnection, closed microwave applicator, the temperature in the hothouse is remained in the preset temperature interval, and then realizes freeze-day with constant temperature.
3, the design of microwave drying attemperating unit has mass monitoring system, i.e. electronic balance.By to the reading in real time and analyzing of dry matter amount data, when the quality of dry thing reaches requirement, controller just directly disconnects working power, stops drying, guarantees dry thing drying quality.
4, the utility model also has cheaply, and control is simple, safe and reliable advantage.
Description of drawings
Fig. 1 is the system block diagram of microwave drying attemperating unit in the utility model.
Fig. 2 is the circuit theory diagrams of microwave drying attemperating unit in the utility model.
Fig. 3 is the pictorial diagram of microwave drying attemperating unit in the utility model.
Fig. 4 is the encapsulation schematic diagram of temperature sensor in the utility model.
Fig. 5 is that electronic balance pallet and the hothouse position in the utility model concerns schematic diagram.
Mark among the figure: part 6 display circuits 7 hothouse housings 8 pallets of temperature sensor 5 electronic balances except that pallet after 4 encapsulation of 1 temperature sensor wires, 2 metal shells, 3 temperature sensors.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is done detailed explanation.
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
As Fig. 1, the microwave drying attemperating unit comprises microwave applicator, controller, relay controller, temperature sensor, and controller has heating control signal output, temperature signal receiving terminal; The temperature signal receiving terminal of described controller is connected with the signal output part of temperature sensor; The heating control signal output of described controller is connected with microwave applicator by relay controller.
For real-time displays temperature signal, the microwave drying attemperating unit also is provided with temperature display circuit, and described controller has the temperature data output, and described temperature data output is connected with temperature display circuit.
In order to send alarm signal at hothouse condition of overhigh temperature lower device, the microwave drying attemperating unit also includes alarm, and described controller has alarm signal output ends, and described alarm signal output ends is connected with alarm.
Described microwave drying attemperating unit also comprises electronic balance, the pallet of described electronic balance places the hothouse housing, the remainder of electronic balance is positioned on the hothouse housing, the hothouse case top is provided with aperture, the remainder of electronic balance is connected by line with pallet, described line passes aperture, as Fig. 5.Described electronic balance has the weight signal output, and described controller also has the weight signal receiving terminal, and the weight signal output of described electronic balance is connected with the weight signal receiving terminal of controller.Thing to be dried places on the pallet of electronic balance, and electronic balance can feed back the quality of thing to be dried in real time to controller.
Consider temperature sensor in microwave environment because kelvin effect and eddy current effect cisco unity malfunction, utilize metal shell that temperature sensor is encapsulated, metal-back physical efficiency usable reflection microwave makes temperature sensor not be subjected to microwave interference.Because copper is the most outstanding metal material of heat conductivility in the current material, employing thickness is that the column copper sheet of 0.5mm encapsulates temperature sensor.
As Fig. 4, metal shell is made up of a cylindrical, copper jar and a hemispherical copper shell, temperature sensor places the cylindrical, copper jar, the lower edge of described hemispherical copper shell matches with size with cylindrical, copper jar opening shape, the hemispherical copper shell is placed on the cylindrical, copper jar, and on the hemispherical copper shell perforate is arranged, the lead-in wire on the sensor is drawn from tapping.The metal shell outer surface is designed to continuous curved surface as far as possible, and purpose is to make microwave energy evenly to reflect in the outer surface of metal shell.So not only effectively shielded microwave to the destruction of temperature sensor but also guaranteed that temperature sensor has higher sensitivity.
As Fig. 2, a specific embodiment of microwave drying attemperating unit is, controller is single chip computer AT 89S52, and temperature sensor is the DS18B20 digital temperature sensor, and the model of electronic balance is SF-400A, and relay controller is a relay.The holding wire that passes through of DS18B20 digital temperature sensor is exported the temperature signal of digital form, and the P13 pin of single chip computer AT 89S52 is connected with the holding wire of DS18B20 digital temperature sensor.The SF-400A electronic balance is by the weight signal of a holding wire output digital form, and the P1.4 pin of single chip computer AT 89S52 is connected (not drawing among the figure) with the holding wire of SF-400A electronic balance.The P0 mouth of single chip computer AT 89S52 is exported to 4 eight sections charactrons by the 74HC573 coding chip with temperature signal.Alarm is the LED lamp, and it is connected (not drawing among the figure) with the P1.5 pin of single chip computer AT 89S52.The P1.0 of single chip computer AT 89S52, P1.1 pin are connected with the control end of relay, the open and close (not drawing among the figure) of relay control microwave applicator.
The operation principle of microwave drying attemperating unit is, thing to be dried is positioned on the interior pallet of hothouse, temperature sensor is passed to controller with the temperature that collects in real time, controller judges whether temperature is higher than the temperature upper limit of setting, if be higher than the power supply that then passes through relay controller point of contact microwave applicator, stop heating, when temperature is lower than the lowest temperature value of setting, controller starts microwave applicator by relay controller.Meanwhile, electronic balance will be dried quality that the qualitative data real-time Transmission of thing detects the thing that is dried for controller, controller when reaching requiring of setting, and controller can stop heating by the power supply of relay controller point of contact microwave applicator equally.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (8)
1. a microwave drying attemperating unit comprises hothouse housing, microwave applicator, controller, relay controller, temperature sensor, it is characterized in that, described microwave applicator and temperature sensor are positioned at the hothouse enclosure interior;
Controller has heating control signal output, temperature signal receiving terminal; The temperature signal receiving terminal of described controller is connected with the signal output part of temperature sensor; The heating control signal output of described controller is connected with microwave applicator by relay controller;
Described temperature sensor is encapsulated in the metal shell.
2. a kind of microwave drying attemperating unit according to claim 1, it is characterized in that, described metal shell is made up of a cylindrical, copper jar and a hemispherical copper shell, described temperature sensor places the cylindrical, copper jar, the lower edge of described hemispherical copper shell matches with size with cylindrical, copper jar opening shape, the hemispherical copper shell is placed on the cylindrical, copper jar, and on the hemispherical copper shell perforate is arranged, and the lead-in wire on the sensor is drawn from tapping.
3. a kind of microwave drying attemperating unit according to claim 1 is characterized in that also comprise temperature display circuit, described controller has the temperature data output, and described temperature data output is connected with temperature display circuit.
4. a kind of microwave drying attemperating unit according to claim 1 is characterized in that also comprise alarm, described controller has alarm signal output ends, and described alarm signal output ends is connected with alarm.
5. a kind of microwave drying attemperating unit according to claim 1, it is characterized in that, also comprise electronic balance, the pallet of described electronic balance places the hothouse housing, described electronic balance has the weight signal output, described controller also has the weight signal receiving terminal, and the weight signal output of described electronic balance is connected with the weight signal receiving terminal of controller.
6. a temperature sensing device that is used for the microwave drying attemperating unit comprises temperature sensor, it is characterized in that, described temperature sensor is encapsulated in the metal shell.
7. a kind of temperature sensing device that is used for the microwave drying attemperating unit according to claim 6, it is characterized in that, described metal shell is made up of a cylindrical, copper jar and a hemispherical copper shell, described temperature sensor places the cylindrical, copper jar, the lower edge of described hemispherical copper shell matches with size with cylindrical, copper jar opening shape, the hemispherical copper shell is placed on the cylindrical, copper jar, and on the hemispherical copper shell perforate is arranged, and the lead-in wire on the sensor is drawn from tapping.
8. a kind of temperature sensing device that is used for the microwave drying attemperating unit according to claim 7 is characterized in that the thickness of described metal shell is 0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201439164U CN202074803U (en) | 2011-05-09 | 2011-05-09 | Microwave drying temperature control device and temperature sensor thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201439164U CN202074803U (en) | 2011-05-09 | 2011-05-09 | Microwave drying temperature control device and temperature sensor thereof |
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| CN202074803U true CN202074803U (en) | 2011-12-14 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028359A (en) * | 2012-12-26 | 2013-04-10 | 内蒙古科技大学 | Microwave high-temperature chemical reaction system |
| CN103389751A (en) * | 2013-08-05 | 2013-11-13 | 南京贝孚莱电子科技有限公司 | Temperature controller adopting novel temperature acquisition technology |
| CN103528361A (en) * | 2013-10-28 | 2014-01-22 | 天津工业大学 | Intelligent drying oven capable of monitoring weight in real time |
| CN104006638A (en) * | 2014-06-19 | 2014-08-27 | 中国烟草总公司郑州烟草研究院 | Microwave fixed bed hot air combined drying experimental device suitable for on-line analysis |
| CN112212615A (en) * | 2020-09-08 | 2021-01-12 | 昆明理工大学 | Microwave vacuum-hot air sectional type drying method for pseudo-ginseng |
-
2011
- 2011-05-09 CN CN2011201439164U patent/CN202074803U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103028359A (en) * | 2012-12-26 | 2013-04-10 | 内蒙古科技大学 | Microwave high-temperature chemical reaction system |
| CN103389751A (en) * | 2013-08-05 | 2013-11-13 | 南京贝孚莱电子科技有限公司 | Temperature controller adopting novel temperature acquisition technology |
| CN103528361A (en) * | 2013-10-28 | 2014-01-22 | 天津工业大学 | Intelligent drying oven capable of monitoring weight in real time |
| CN104006638A (en) * | 2014-06-19 | 2014-08-27 | 中国烟草总公司郑州烟草研究院 | Microwave fixed bed hot air combined drying experimental device suitable for on-line analysis |
| CN104006638B (en) * | 2014-06-19 | 2016-04-06 | 中国烟草总公司郑州烟草研究院 | Be applicable to the hot air combined drying experimental device of microwave fixed bed of on-line analysis |
| CN112212615A (en) * | 2020-09-08 | 2021-01-12 | 昆明理工大学 | Microwave vacuum-hot air sectional type drying method for pseudo-ginseng |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111214 Termination date: 20140509 |