CN104180576A - Low-temperature semiconductor refrigerator and method for providing linear voltage for chilling plates of refrigerator - Google Patents
Low-temperature semiconductor refrigerator and method for providing linear voltage for chilling plates of refrigerator Download PDFInfo
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- CN104180576A CN104180576A CN201410444396.9A CN201410444396A CN104180576A CN 104180576 A CN104180576 A CN 104180576A CN 201410444396 A CN201410444396 A CN 201410444396A CN 104180576 A CN104180576 A CN 104180576A
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Abstract
The invention discloses a low-temperature semiconductor refrigerator and a method for providing linear voltage for chilling plates of the refrigerator. The low-temperature semiconductor refrigerator comprises a refrigerator body, a temperature control component, a radiating component, a heat insulation layer and the semiconductor chilling plates, the refrigerator body comprises a shell, an inner container, a door and a frame, the temperature control component mainly comprises a voltage adjusting DC/DC (direct current) power supply, a remote measuring operating state monitoring unit, a display and input control unit and a signal acquisition and a DSP (digital signal processor) microprocessor and provides 4V-12V linear operating voltage for the semiconductor chilling plates, cold ends of the semiconductor chilling plates are directly connected with the inner container, hot ends of the semiconductor chilling plates contact with a hot end of the radiating component, and the heat insulation layer comprises a polyurethane foam layer and a vacuum insulation panel. Compared with the prior art, the semiconductor chilling plates are driven in a linear voltage adjusting mode, the heat insulation performance of the refrigerator is improved, and the refrigerator has functions such as power-on self-test, temperature setting and display, failure warning and remote parameter measuring.
Description
Technical field
The present invention relates to a kind of refrigeration memory device, relate in particular to a kind of cryogenic semiconductor refrigerator and provide the method for linear voltage for its cooling piece.
Background technology
The semiconductor freezer arriving seen in actual life is at present mainly as car refrigerator, or travlling refrigerator, wine cabinet etc., and its temperature control scope is generally at 0 ℃～15 ℃, is used for beverage, food etc. to carry out the refrigeration of short time.Semiconductor freezer mainly partly consists of refrigerator body, cooling piece, blower fan and heat abstractor etc., its advantage is that volume is little, life-span length, friction, shock resistance, the temperature difference is adjustable, also can heat, do not use cold-producing medium etc., is a kind of refrigeration plant of real environmental protection.But its shortcoming is that refrigeration, radiating efficiency are lower, and heat-insulating property is poor, is not suitable for refrigeration is had relatively high expectations, and particularly storage temperature is required to the occasion below zero degrees celsius.
Samsung Electronics's CN03277508.3 patent discloses a kind of semiconductor freezer, this invention is to be mainly provided with apopore at refrigerator main body, the exit of this apopore is provided with drip tray, on drip tray, be provided with heating element heater, heating element heater is connected with heating control loop, connects heating circuit when needs evaporation condensed water.Hefei Media Rongshida Refrigerator Co., Ltd.'s CN20120305650.8 patent discloses semiconductor freezer drive circuit, temperature control equipment and refrigerator, this invention relates to semiconductor refrigerating piece driving circuit, this drive circuit has the two-way control function to input cooling piece bipolar current, thereby makes this cooling piece have heating and refrigerating function.But mainly there is following problem in above-mentioned two inventions:
(1) product bug reason do not possess power-on self-test function, as can not be accurately located failure cause;
(2) refrigerating efficiency, heat-insulating property are not high, cannot provide 0 ℃ of following low temperature storage environment, and cryogenic temperature are non-adjustable.
(3) can not monitor main electric component duty in refrigerator, as parameters such as the operating voltage of cooling piece, blower fan and electric currents.
Summary of the invention
Object of the present invention is just that providing a kind of addresses the above problem, semiconductor freezer refrigerating efficiency and heat-insulating property have been improved, possesses the monitoring of power-on self-test, key parameter, the continuously adjustable cryogenic semiconductor refrigerator of cavity temperature and provide the method for linear voltage for its cooling piece.
To achieve these goals, the technical solution used in the present invention is: a kind of cryogenic semiconductor refrigerator, it comprises refrigerator main body, described refrigerator main body is by shell, inner bag, door, system framework, also comprise temperature control assembly, radiating subassembly, heat-insulation layer and semiconductor chilling plate form, described temperature control assembly is mainly by pressure regulation DC/DC power supply, remote measurement working state monitoring unit, show and Input Control Element, signals collecting and DSP microprocessor form, pressure regulation DC/DC power supply, remote measurement working state monitoring unit, show and Input Control Element, between signals collecting and DSP microprocessor, be electrically connected to, temperature control assembly provides 4V～12V linear work voltage for partly leading cooling piece, the cold junction of described semiconductor chilling plate is directly connected with inner bag, the hot junction of semiconductor chilling plate contacts with the hot junction of described radiating subassembly, described heat-insulation layer is comprised of polyurethane foam and vacuum insulation panel.
As preferably, described radiating subassembly is comprised of heat pipe, radiating fin and blower fan, and described blower fan is positioned at the cold junction of radiating subassembly, and radiating fin is fixedly connected with heat pipe.
As preferably, described heat-insulation layer is between shell and inner bag.
As preferably, described vacuum insulation panel thermal conductivity factor is 0.005-0.01W/mK.
As preferably, at the contact-making surface in the hot junction of semiconductor chilling plate and the hot junction of described radiating subassembly, smear heat-conducting silicone grease layer.
A kind of cryogenic semiconductor refrigerator provides the method for linear voltage for its cooling piece, described semiconductor chilling plate high efficiency drive linear voltage is to adopt DSP microprocessor to go out the required operating voltage of semiconductor chilling plate according to temperature control algorithm real-time resolving, and calculate the required linear quadratic control input voltage of DC/DC power supply in conjunction with pressure regulation DC/DC output characteristic of power source, described linear quadratic control input voltage passes to DA output module with digital form by drive circuit, DA output module converts data signal to the linear quadratic control input that passes to pressure-adjustable DC/DC module after voltage signal, pressure regulation DC/DC outputs to semiconductor chilling plate by scheduled voltage, thereby realize semiconductor chilling plate high efficiency drive.
Compared with prior art, the invention has the advantages that:
(1) adopt linear voltage regulation mode to drive semiconductor chilling plate, higher than traditional control method efficiency;
(2) adopt rigid polyurethane foams and vacuum insulation panel assembly insulation construction, greatly improved refrigerator heat-insulating property;
(3) take the temperature control assembly that DSP is core processor, make refrigerator possess the functions such as startup self-detection, Temperature Setting and demonstration, fault alarm and parameter remote measurement.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is heat insulation layer structure schematic diagram of the present invention
Fig. 3 is semiconductor chilling plate linear voltage regulation control mode block diagram of the present invention
Fig. 4 is refrigerating capacity test result of the present invention.
In figure: 1. temperature control assembly; 2. refrigerator main body; 3. semiconductor chilling plate; 4. heat-insulation layer; 5. radiating subassembly; 6. shell; 7. vacuum insulation panel; 8. inner bag; 9. polyurethane foam.
The specific embodiment
Below the invention will be further described.
Embodiment: referring to Fig. 1, Fig. 2, Fig. 3, a kind of cryogenic semiconductor refrigerator and provide the method for linear voltage for its cooling piece, it comprises refrigerator main body 2, described refrigerator main body 2 is by shell 6, inner bag 8, door, system framework, also comprise temperature control assembly 1, radiating subassembly 5, heat-insulation layer 4 and semiconductor chilling plate 3 form, the cold junction of described semiconductor chilling plate 3 is directly connected with inner bag 8, the hot junction of semiconductor chilling plate 3 contacts with the hot junction of described radiating subassembly 5, described radiating subassembly 5 is by heat pipe, radiating fin and blower fan form, radiating fin is fixedly connected with heat pipe, radiating subassembly 5 cold junctions are equipped with blower fan and carry out forced convection heat radiation, contact-making surface in the hot junction of semiconductor chilling plate 3 and the hot junction of described radiating subassembly 5 is smeared heat-conducting silicone grease layer, described heat-insulation layer 4 is comprised of 9 layers of polyurethane foams and vacuum insulation panel 7, described heat-insulation layer 4 is between shell 6 and inner bag 8, described vacuum insulation panel 7 thermal conductivity factors are 0.005-0.01W/mK, thermal conductivity factor 0.008W/mK as preferred the present embodiment vacuum insulation panel 7.
Described heat-insulation layer 4 is comprised of 9 layers of polyurethane foams and vacuum insulation panel 7, described heat-insulation layer 4 has changed and only with foam, has carried out heat insulation tradition insulation form, select polyurethane foam 9 and vacuum insulation panel 7 combinations, first vacuum insulation panel 7 is fixed in the structure of refrigerator with bonding way, rear employing pressure expansion mode, after foam and vacuum insulation panel 7 are solidified, form one, this heat preserving mode has improved the heat-insulating property of refrigerator greatly.
Described temperature control assembly 1 is mainly comprised of pressure regulation DC/DC power supply, remote measurement working state monitoring unit, demonstration and Input Control Element, signals collecting and DSP microprocessor, between pressure regulation DC/DC power supply, remote measurement working state monitoring unit, demonstration and Input Control Element, signals collecting and DSP microprocessor, is electrically connected to.
Temperature control assembly 1 provides 4V～12V linear work voltage for partly leading cooling piece.Described temperature control assembly 1 obtains interior cavity temperature by temperature sensor, calculate observed temperature and design temperature difference, according to self learning type artificial intelligence fuzzy control technology algorithm, calculate the required control parameter of semiconductor chilling plate 3 work, described temperature control algorithm is by expert system, artificial intelligence application is controlled in temperature, based on temperature variation characteristic before and after each control cycle of temperature deviation amount comparison and provide corresponding controlled quentity controlled variable, adopt dsp processor to go out the required operating voltage of semiconductor chilling plate 3 according to temperature control algorithm real-time resolving, and calculate the required linear quadratic control input voltage of DC/DC power supply in conjunction with pressure regulation DC/DC output characteristic of power source, described pressure regulation DC/DC power supply can be by linear quadratic control end input 0.4V～1.2V control signal, this pressure regulation DC/DC power supply is the flat required supply voltage of exportable 4.0V～12.0V refrigeration, described linear quadratic control input voltage passes to DA output module with digital form by drive circuit, DA output module converts data signal to the linear quadratic control input that passes to pressure-adjustable DC/DC module after voltage signal, pressure regulation DC/DC outputs to semiconductor chilling plate 3 by scheduled voltage, make semiconductor chilling plate 3 in efficient duty, thereby realize-20 ℃～4 ℃ continuously adjustable temperature controls.Bright refrigerating capacity test result as shown in Figure 4.
Described temperature control assembly 1 first carries out the self check of DSP microprocessor, the detection of temperature sensor duty, blower fan and the functional detection of semiconductor chilling plate 3 after powering on, and show that by front panel OLED display screen testing result, described temperature control assembly 1 can monitor in blower fan operating voltage and electric current, semiconductor chilling plate 3 operating voltages and electric current, chamber and the major parameters such as temperature in radiator hot junction.By temperature control assembly 1, make in refrigerator chamber cryogenic temperature adjustable continuously, after powering on, can and show by OLED self check information, temperature information and fault alarm information, to main electric component duty, can monitor.The functions such as the real current refrigerator startup self-detection of temperature control assembly 1, Temperature Setting and demonstration, fault alarm, semiconductor chilling plate 3 high efficiency drive and key parameter monitoring.The unexposed technology of the present invention belongs to general knowledge as well known to those skilled in the art.
The cryogenic semiconductor refrigerator providing is provided and has been carried out detailed introduction for its cooling piece provides the method for linear voltage, applied specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, to change of the present invention and improvement, will be possible, and can not exceed design and the scope of accessory claim defined, in sum, this description should not be construed as limitation of the present invention.
Claims (6)
1. a cryogenic semiconductor refrigerator, it comprises refrigerator main body, described refrigerator main body is by shell, inner bag, door, system framework, it is characterized in that: also comprise temperature control assembly, radiating subassembly, heat-insulation layer and semiconductor chilling plate form, described temperature control assembly is mainly by pressure regulation DC/DC power supply, remote measurement working state monitoring unit, show and Input Control Element, signals collecting and DSP microprocessor form, pressure regulation DC/DC power supply, remote measurement working state monitoring unit, show and Input Control Element, between signals collecting and DSP microprocessor, be electrically connected to, temperature control assembly provides 4V～12V linear work voltage for partly leading cooling piece, the cold junction of described semiconductor chilling plate is directly connected with inner bag, the hot junction of semiconductor chilling plate contacts with the hot junction of described radiating subassembly, described heat-insulation layer is comprised of polyurethane foam and vacuum insulation panel.
2. a kind of cryogenic semiconductor refrigerator according to claim 1, is characterized in that: described radiating subassembly is comprised of heat pipe, radiating fin and blower fan, and described blower fan is positioned at the cold junction of radiating subassembly, and radiating fin is fixedly connected with heat pipe.
3. a kind of cryogenic semiconductor refrigerator according to claim 1, is characterized in that: described heat-insulation layer is between shell and inner bag.
4. a kind of cryogenic semiconductor refrigerator according to claim 1, is characterized in that: described vacuum insulation panel thermal conductivity factor is for being 0.005-0.01W/mK.
5. a kind of cryogenic semiconductor refrigerator according to claim 1, is characterized in that: the contact-making surface in the hot junction of semiconductor chilling plate and the hot junction of described radiating subassembly is smeared heat-conducting silicone grease layer.
6. a cryogenic semiconductor refrigerator provides the method for linear voltage for its cooling piece, it is characterized in that: described semiconductor chilling plate high efficiency drive linear voltage is to adopt DSP microprocessor to go out the required operating voltage of semiconductor chilling plate according to temperature control algorithm real-time resolving, and calculate the required linear quadratic control input voltage of DC/DC power supply in conjunction with pressure regulation DC/DC output characteristic of power source, described linear quadratic control input voltage passes to DA output module with digital form by drive circuit, DA output module converts data signal to the linear quadratic control input that passes to pressure-adjustable DC/DC module after voltage signal, pressure regulation DC/DC outputs to semiconductor chilling plate by scheduled voltage, thereby realize semiconductor chilling plate high efficiency drive.
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| CN201410444396.9A CN104180576B (en) | 2014-09-03 | 2014-09-03 | Cryogenic semiconductor refrigerator and the method providing linear voltage for its cooling piece |
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| CN201410444396.9A CN104180576B (en) | 2014-09-03 | 2014-09-03 | Cryogenic semiconductor refrigerator and the method providing linear voltage for its cooling piece |
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| CN104534772A (en) * | 2015-01-06 | 2015-04-22 | 青岛海尔股份有限公司 | Semiconductor refrigerator |
| WO2016095590A1 (en) * | 2014-12-15 | 2016-06-23 | 青岛海尔股份有限公司 | Bent pipe and a semiconductor refrigeration refrigerator with bent pipe |
| WO2016123992A1 (en) * | 2015-02-03 | 2016-08-11 | 青岛海尔股份有限公司 | Heat exchange device and semiconductor cooling refrigerator having same |
| CN106300922A (en) * | 2015-06-04 | 2017-01-04 | 国网智能电网研究院 | A kind of high temperature driven protection device |
| CN109695942A (en) * | 2017-10-23 | 2019-04-30 | 宾得有限公司 | Method and air-conditioning cabinet for operating air conditioner cabinet |
| CN110613306A (en) * | 2018-06-20 | 2019-12-27 | 佛山市顺德区美的电热电器制造有限公司 | Cooking equipment and temperature control method and device thereof |
| CN113982877A (en) * | 2021-11-19 | 2022-01-28 | 天津市通洁高压泵制造有限公司 | High-pressure plunger pump for fatigue test of gas cylinder |
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| CN113982877A (en) * | 2021-11-19 | 2022-01-28 | 天津市通洁高压泵制造有限公司 | High-pressure plunger pump for fatigue test of gas cylinder |
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| CN104180576B (en) | 2016-08-17 |
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