CN112393457A - Heating and refrigerating integrated pot and heating and refrigerating method - Google Patents
Heating and refrigerating integrated pot and heating and refrigerating method Download PDFInfo
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- CN112393457A CN112393457A CN202011278029.8A CN202011278029A CN112393457A CN 112393457 A CN112393457 A CN 112393457A CN 202011278029 A CN202011278029 A CN 202011278029A CN 112393457 A CN112393457 A CN 112393457A
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- 238000004064 recycling Methods 0.000 claims abstract description 50
- 239000007788 liquid Substances 0.000 claims description 118
- 238000003860 storage Methods 0.000 claims description 59
- 238000011084 recovery Methods 0.000 claims description 48
- 238000005057 refrigeration Methods 0.000 claims description 44
- 238000001816 cooling Methods 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 13
- 238000003825 pressing Methods 0.000 claims description 10
- 125000004122 cyclic group Chemical group 0.000 claims description 7
- 210000005239 tubule Anatomy 0.000 claims description 7
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 6
- 238000011065 in-situ storage Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000003094 microcapsule Substances 0.000 claims description 5
- 239000012782 phase change material Substances 0.000 claims description 5
- 238000006116 polymerization reaction Methods 0.000 claims description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 4
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- 239000012188 paraffin wax Substances 0.000 claims description 4
- 229920000877 Melamine resin Polymers 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 claims description 3
- -1 melamine modified formaldehyde Chemical class 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 3
- 238000001308 synthesis method Methods 0.000 claims description 3
- 229920001807 Urea-formaldehyde Polymers 0.000 claims description 2
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- 239000011257 shell material Substances 0.000 claims description 2
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- 239000012530 fluid Substances 0.000 description 3
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- 238000002360 preparation method Methods 0.000 description 3
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B21/00—Machines, plants or systems, using electric or magnetic effects
- F25B21/02—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
- F25B21/04—Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect reversible
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Temperature (AREA)
Abstract
The invention discloses a heating and refrigerating integrated pot and a heating and refrigerating method. The method comprises a heating method and a refrigerating method. The heating and refrigerating integrated pot has the characteristics of small volume, low cost, temperature control range of-20-200 ℃ and the like, solves the problems of high energy consumption, high cost, limited functions, narrow application range and the like of the conventional heating and refrigerating device, and has universal significance for experiments with low temperature precision requirements. The heating and refrigerating method of the heating and refrigerating integrated pot realizes the recycling of the energy at the hot end of the semiconductor refrigerating sheet.
Description
Technical Field
The invention belongs to a heating and refrigerating combined system, and particularly relates to a heating and refrigerating integrated pot and a heating and refrigerating method.
Background
The demand for cooling and heating equipment as a necessary laboratory instrument in chemical, material, food and medical laboratories is increasingly emerging.
In the aspect of refrigeration, an operation mode of an ice salt bath is generally adopted in an experiment, and the problems of serious loss, complex operation, low temperature control precision, short maintenance time and the like exist in the mode because the lowest temperature of the ice salt is determined by a ratio, the preparation time is long, and the temperature rises after the ice salt works for a period of time. Instead, laboratories use cryoinstruments for refrigeration to provide a cryogenic environment. Chinese patent CN201410619717.4 discloses a large-capacity high-precision liquid device, which can effectively cool and control temperature with high precision, and because the devices of this type generally use compressors and refrigerating liquids to refrigerate, the size is large and the price is high. The low-temperature constant-temperature tank can be used for experimental occasions with higher temperature control precision requirements, but has low refrigeration efficiency, large noise and high manufacturing cost; the other low-temperature instrument cooling circulating water machine has small volume and quick refrigeration, but has overlarge water consumption, small application range and high price due to the working mode of water circulation, and cannot be widely popularized.
In the aspect of heating, the experiment generally adopts an operation mode of heating an oil bath pan, and the operation mode is simple and convenient. Chinese patent CN201410635298.3 discloses a combined instrument device of oil bath pan and magnetic stirrer, which only has experimental heating and stirring functions, so it is not satisfactory for reactions below room temperature.
Therefore, it is necessary to develop a new experimental device which is simple in operation, moderate in temperature control range and capable of realizing integration of refrigeration and heating.
Disclosure of Invention
The invention aims to solve the problems of large energy consumption, high cost, limited functions, narrow application range and the like of the conventional heating and refrigerating device, and provides a novel heating and refrigerating integrated pot.
The invention has the characteristics of small volume, low cost, temperature control range of-20 ℃ to 200 ℃ and the like, and has universal significance for experiments with low temperature precision requirements.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a heating and refrigerating integrated pot comprises a frame, a pot body assembly, an industrial personal computer, a semiconductor refrigerating sheet and a temperature control box. The inner part of the frame is sequentially provided with the pot body assembly, the semiconductor refrigerating sheet and the temperature control box from top to bottom, and the industrial personal computer is arranged on one side wall of the frame.
The frame is a square frame with a cavity, a circular through hole for accommodating the pot body assembly is formed in a top plate of the frame, and a rectangular through groove for mounting the industrial personal computer is formed in one side plate of the frame.
The pot body assembly comprises a pot body, a first micro pump, an arc-shaped heating rod, a first temperature sensor, a magnetic stirrer and an oil bath circulating pipe. Wherein the pot body is provided with an annular outward flanging; 2 through holes with set intervals are arranged at the inner bottom of the pot body, wherein one through hole is provided with an oil bath circulating pipe penetrating through the pot body, and the other through hole is provided with an arc-shaped heating rod penetrating through the pot body; the first temperature sensor and the magnetic stirrer are installed at the outer bottom of the pot body. The electric heating wire part of the arc-shaped heating rod is arranged at the inner bottom of the pot body, the first micro pump is arranged on the other side wall of the frame, two ends of the first micro pump are respectively communicated with two ends of the oil bath circulating pipe, the upper part of the oil bath circulating pipe is communicated with the pot body and the first micro pump, the lower part of the oil bath circulating pipe is in a rectangular zigzag shape, and the rectangular zigzag part is tightly attached to the lower semiconductor refrigerating sheet and the temperature control box. The arc-shaped heating rod, the magnetic stirrer, the first micropump and the first temperature sensor are respectively and electrically connected with the industrial personal computer.
The industrial personal computer comprises a box body, a touch screen, a central controller and an alternating current-direct current converter. Wherein the box body is arranged in a rectangular through groove formed in one side plate of the frame. The touch screen is installed on the box body, the central controller is installed inside the box body, and the circuit line penetrates through the box body and is connected with the touch screen and the alternating current-direct current converter respectively. The alternating current-direct current converter is arranged at the bottom in the frame, and a circuit line passes through the industrial personal computer and is connected with the central controller.
The semiconductor refrigerating pieces are a plurality of groups of even refrigerating pieces. Semiconductor refrigeration piece is in pairs to be arranged at the collection box case lid recess upper surface of temperature control box, and its bottom adhesion is on the collection box case lid, and the circuit line passes the industrial computer box and links to each other with central controller.
The temperature control box comprises a recovery box body, a recovery box cover, a liquid storage box, a box body mounting frame, a second micro pump, a second temperature sensor, an upper thin tube, a lower thin tube and a nozzle. The recycling box body is an annular square cavity structure body, the lower end of the recycling box body is of an inverted trapezoidal structure, the top surface of the upper end of the annular square cavity of the recycling box body is open, the inner bottom surface of the recycling box body is provided with an installation hole for installing a plurality of nozzles, and the top surface of the lower end of the recycling box body is provided with a connecting hole for arranging a lower thin tube communicated with the second micro pump. The top surface and the recovery case lid sealing connection of the cyclic annular square cavity upper end of recovery case box, the lower extreme of the cyclic annular square cavity of recovery case box passes through the box mounting bracket to be fixed on the frame diapire, the appearance of recovery case lid be the tabular thin wall case lid of rectangle flute, the adhesion has the semiconductor refrigeration piece respectively between two liang of flutes in top. The liquid reserve tank be the square cavity body, fix at the cyclic annular square cavity central authorities of collection box through the box mounting bracket, a plurality of nozzles of a plurality of nozzles that bottom surface mounting was in the cyclic annular square cavity upper end of upper surface and collection box are connected, the lower surface is through last tubule and the second micropump intercommunication that wear to stretch. The second temperature sensor is arranged in the liquid storage tank.
Furthermore, the distance between the connecting holes is 4/5 times the diameter of the pot body.
Furthermore, the oil bath circulating pipe is a heat conduction connecting pipe with fins arranged on the inner layer.
Further: the central controller comprises a temperature control module, a speed module, an alarm module and an AC-DC converter.
Further: the touch screen is provided with an identification key, a working key and a fault key.
Further: and the outer wall of the box body of the recovery box, the outer wall of the box cover of the recovery box and the inner wall and the outer wall of the liquid storage box are coated with heat insulation coatings.
Further: the box body mounting frame is of an H-shaped structure provided with two layers of mounting planes, a liquid storage tank is arranged on the upper plane of the upper layer, and the periphery of the liquid storage tank is fixedly connected through a liquid storage tank fixing pressing plate; the lower layer lower plane is placed on the recycling bin body, and two side surfaces of the recycling bin body are fixed through a recycling bin body fixing pressing plate; a second micro pump is arranged between the two layers of mounting planes; the bottom surfaces of the two vertical walls of the box body mounting frame are provided with outward flanges which are fixedly connected with the frame through screws.
Further: the temperature control range of the heating and refrigerating integrated pot is-20 ℃ to 200 ℃.
Further, circulating liquid is arranged in the liquid storage tank, and preferably, the circulating liquid is paraffin phase change microcapsule suspension prepared by using an in-situ polymerization method as a synthesis method and melamine modified formaldehyde resin as a wall material or by using an in-situ polymerization method. Sodium Dodecyl Sulfate (SDS) is used as an emulsifier, 6 percent of NaCl is added, the ratio of prepolymer to core material is 3:1, the emulsifying and stirring speed is 15000rmp, and the dosage of the emulsifier sodium dodecyl sulfate is 8 percent, so as to synthesize the microcapsule phase change material which takes urea resin as a shell material and takes alkane phase change material RLIBITHERM RT26 as the core material.
A heating and refrigerating method of a heating and refrigerating integrated pot comprises two methods of heating and refrigerating:
the heating method comprises the following specific steps:
And 2, calculating the temperature difference Delta Th (T1-T2) by the central controller, and judging T3 and Delta Th by the central controller.
And step 3, judging the condition I, wherein T3 is the set minimum temperature and Delta Th is more than 10 ℃. In the second determination condition, T3 is not the set temperature. And a third judgment condition is that T3 reaches the set minimum temperature and the heating work is not finished. The judgment condition is four, and the temperature is more than 10 ℃, and the Delta Th is more than or equal to 0 ℃.
And 4, executing the condition one, wherein the heating work is only completed by the active heating system. And judging a second condition, wherein the heating work is finished by an auxiliary heating system. And judging a third condition, and switching the auxiliary heating system to the active heating system. And judging the condition four, the active heating system works discontinuously, the temperature difference is stabilized at +/-3 ℃, and the touch screen prompts heat preservation.
The active heating system controls the arc-shaped heating rod to perform heating work for the central controller. The auxiliary heating system controls the AC-DC converter for the central controller to make the semiconductor refrigerating sheet and the second micro pump work, and the heating work is performed by the semiconductor refrigerating sheet. The second micro pump makes the recycling box body and the liquid storage box form a pressure difference, and the circulating liquid enters a cavity flow channel formed by the recycling box body and the recycling box cover through the nozzle. At the moment, the hot end of the semiconductor refrigerating sheet is the upper surface, and the cold end of the semiconductor refrigerating sheet is the lower surface. The heat-conducting oil in the oil bath circulating pipe flows through the upper surface of the semiconductor refrigerating sheet to be heated, and the circulating liquid of the liquid storage tank is sprayed out through the nozzle to be contacted with the cover of the recovery tank to be cooled.
The refrigeration method comprises the following specific steps:
And 2, calculating the temperature difference Delta Th (T4-T2) by the central controller, and judging T3 and Delta Th by the central controller.
And step 3, judging that the condition I is that T3 is lower than the set maximum temperature. In the second determination condition, T3 is the set maximum temperature. And judging the condition three, wherein the temperature is 10 ℃ greater than the temperature of Delta Th | >0 ℃.
And 4, executing the condition I, and enabling the semiconductor refrigeration system to work. And judging a second condition, and executing the safety mode. And judging the condition III, namely, the semiconductor refrigeration system works discontinuously, the temperature difference is stabilized to +/-3 ℃, and the touch screen prompts heat preservation.
The semiconductor refrigerating system controls the AC-DC converter for the central controller to make the semiconductor refrigerating sheet and the second micro pump work. At the moment, the cold end of the semiconductor refrigerating sheet is the upper surface, and the hot end of the semiconductor refrigerating sheet is the lower surface. And the second micro pump enables the recovery box body and the liquid storage box to form a pressure difference, and the circulating liquid enters a cavity flow channel formed by the recovery box body and the recovery box cover through the nozzle. The circulating liquid contacts the box cover of the recovery box to absorb heat generated by the hot end of the semiconductor refrigerating sheet. In the safety mode, the central controller controls the AC-DC converter to enable the semiconductor refrigerating sheet and the second micro pump to work. At the moment, the hot end of the semiconductor refrigerating sheet is the upper surface, and the cold end of the semiconductor refrigerating sheet is the lower surface. The second micro pump enables the recovery box body and the liquid storage box to form pressure difference, and circulating liquid enters a cavity flow channel formed by the recovery box body and the recovery box cover through the nozzle. The circulating liquid contacts the cover of the recovery box to release heat until the temperature of the circulating liquid is reduced to the set minimum temperature.
By adopting the technical scheme, the invention has the following beneficial effects:
(1) according to the semiconductor refrigeration piece, the alternating current-direct current converter is adopted to control the electrical connection mode of the semiconductor refrigeration piece, the heat end energy of the semiconductor refrigeration piece is stored by utilizing the characteristics of the phase-change energy storage material, and meanwhile, the energy is used for heating the cold end of the semiconductor refrigeration piece of the auxiliary heating system, so that the loss of a unit module piece caused by the overlarge temperature difference between the cold end and the hot end of the semiconductor refrigeration piece is avoided, the service life of the device is prolonged, and the refrigeration efficiency of the semiconductor refrigeration piece is improved. Compared with the traditional air cooling and water cooling modes, the heating and refrigerating method provided by the invention fully utilizes the heat generated at the hot end of the semiconductor refrigerating sheet, avoids the waste of the heat caused by air cooling and water cooling, and improves the utilization rate of energy.
(2) The invention adopts an in-situ polymerization method as a synthesis method, melamine modified formaldehyde resin as a wall material and the prepared paraffin phase-change microcapsule suspension as a circulating liquid. Compared with common paraffin wax, the circulating liquid has the advantages of uniform particles, good fluidity, high stability and good heat-conducting property, and the wall material has stronger mechanical strength, so that the circulating liquid has longer service life.
(3) According to the invention, the bottom of the recovery box is provided with the inverted trapezoidal structure, and liquid circulating liquid is not easy to adhere to the inner side of the pipe wall in the recovery box due to the combined action of gravity, the pressure difference between the recovery box body and the liquid storage box and the cavity fixed flow channel, so that the blockage of the recovery box is avoided. The liquid circulating liquid is finally collected at the bottom of the recycling bin and is pumped into the liquid storage tank again through the second micro pump for circulating heat exchange, and the utilization rate of the circulating liquid is improved.
(4) The invention adopts the cover of the recovery box designed by a single-corrugated structure, effectively increases the heat conduction area of convection heat transfer under the condition of unchanging the jet distance of the nozzle, reduces the resistance of left and right flow of circulating liquid in the pipeline, improves the energy loss caused by vortex generated in the pipeline and effectively improves the heat conduction efficiency.
(5) The invention adopts the coiled pipe with the inner layer provided with the fins as the oil bath circulating pipe, and the inner layer fins damage the formation of the boundary layer when the fluid flows, so that the fluid is easy to form turbulent flow with higher mixing degree, simultaneously the heat transfer area of the internal fluid is effectively increased, and the heat conduction efficiency of the heat conduction oil is greatly improved.
Drawings
Figure 1 is a top view of an integrated pot of the present invention,
figure 2 is a schematic view of the construction of an integrated pot of the present invention,
figure 3 is a cross-sectional view a-a of figure 1,
figure 4 is a cross-sectional view C-C of figure 1,
figure 5 is a drawing of the recovery box body part of the integrated cooker of the invention,
figure 6 is a drawing of the recovery box cover plate component of the integrated cooker of the invention,
figure 7 is a detail view of the box mounting bracket of the integrated cooker of the invention,
FIG. 8 is a structural view of a central controller of the integrated cooker of the present invention,
the reference numbers in the figure indicate that 1, a touch screen, 2, an AC-DC converter, 3, a central controller, 4, a recovery box pressing plate, 5, a pot body, 6, a second temperature sensor, 7, a nozzle, 8, a liquid storage box, 9, an arc heating rod, 10, a lower thin pipe, 11, a recovery box cover plate, 12, an upper thin pipe, 13, a magnet, 14, a second micro pump, 15, a motor, 16, a recovery box body, 17, a first temperature sensor, 18, a box body mounting rack, 19, a semiconductor refrigeration sheet, 20, a liquid storage box pressing plate, 21, an oil bath circulation pipe, 22, a frame, 23, a first micro pump, 24, a temperature control module, 25, an alarm module, 26 and a speed control module.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-4, the heating and cooling integrated pot of the present invention comprises a frame 22, a pot body assembly, an industrial personal computer, a semiconductor cooling plate 19 and a temperature control box, wherein the pot body assembly, the semiconductor cooling plate 19 and the temperature control box are sequentially installed inside the frame 22 from top to bottom.
The frame 22 is a square frame, the top of the frame is provided with a circular through hole, and the circumference of the frame is provided with a mounting hole for mounting a pot body assembly; the side of the frame 22 is provided with a rectangular through groove, and the periphery of the frame is provided with mounting holes for mounting an industrial personal computer.
The pan body assembly mainly comprises a pan body 5, a first micro pump 23, an arc-shaped heating rod 9, a first temperature sensor 17, a magnetic stirrer and an oil bath circulating pipe 21. The pot body 5 is in a common pot shape and is provided with an annular outward flanging, and the outward flanging is provided with 4 uniformly distributed screw through holes. The bottom of the pot body 5 is provided with 2 connecting through holes with set intervals, one connecting through hole is an oil bath circulating pipe 21 which penetrates through the pot body 5, the interval between the connecting holes is 4/5 of the diameter of the pot body, and the other connecting through hole is an arc-shaped heating rod 9 which penetrates through the pot body 5. The bottom of the pot body 5 is upwards provided with 3 groups of mounting blind holes. The pot body 5 is embedded in the frame 22, and the outer flanging of the pot body is connected and fixed through the screw frame 22. The bottom of the inner side of the pot body 5 is provided with an arc-shaped heating rod 9, and the bottom of the outer side of the pot body 5 is provided with a first micro pump 23, a first temperature sensor 17, a magnetic stirrer and an oil bath circulating pipe 21. The electric heating wire part of the arc-shaped heating rod 9 is arranged on the inner side of the pot body 5, the circuit wire of the arc-shaped heating rod is connected with the industrial personal computer by penetrating through the connecting through hole at the bottom of the pot body 5, and the arc-shaped heating rod 9 is fixedly sealed by the locking nuts and the sealing rings on the two sides of the connecting through hole. The magnetic stirrer is upwards installed and fixed at the center of the bottom of the pot body 5 from the bottom of the outer side of the pot body 5 through a screw, and a circuit line of the magnetic stirrer is connected to an industrial personal computer. The first micro pump 23 is upwards installed and fixed at the bottom of the pot body from the bottom of the outer side of the pot body 5 through a screw, two ends of the first micro pump 23 are respectively communicated with two ends of the oil bath circulating pipe 21, and a circuit line of the first micro pump is connected to an industrial personal computer. The first micropump 23 is preferably a NKP-DC-S04B, NKP-DC-S06B peristaltic pump. The first temperature sensor 17 is fixed at the bottom of the pot body 5 from the bottom of the outer side of the pot body 5 upwards through a screw, and a circuit line of the first temperature sensor is connected to an industrial personal computer. The infrared temperature sensor can adopt GY-906-BCC, GY-906-BAA, GY-906-DCI infrared temperature sensors and the like. The oil bath circulating pipe 21 is a heat-conducting connecting pipe, fins are arranged on the inner layer of the oil bath circulating pipe 21, part of the oil bath circulating pipe 21 is communicated with the pot body 5 and the first micro pump 23, and pipe orifices at the upper two ends are fixedly sealed at the bottom of the outer side of the pot body 5 through nuts and sealing rings. The lower part of the oil bath circulating pipe 21 is in a rectangular zigzag shape, and the rectangular zigzag part is tightly attached to the lower semiconductor refrigerating sheet 19 and the temperature control box.
The magnetic stirring device comprises a magneton 13 and a motor 15. The motor 15 is fixed at the outer bottom of the pot body 5 through a bracket and a fastening screw, the magnetons 13 are arranged at two ends of a vertical rod connected with an output shaft of the motor 15, and the motor 15 is electrically connected with the speed control module 26.
The industrial personal computer comprises an industrial personal computer box body, a touch screen 1, an alternating current-direct current converter 2 and a central controller 3. The industrial control cabinet body is a common iron sheet box body, the inner side of the industrial control cabinet body is hollow, and the industrial control cabinet body is arranged in a rectangular through groove in the side face of the frame 22 through screws. And the front surface of the industrial personal computer box body is outwards provided with a touch screen 1. The touch screen 1 comprises a transparent film, a circuit board, a marking key and a conductive component. The transparent film is used for displaying the temperature, the operation mode and the operation time in the cooker, the circuit board and the conductive component are respectively and electrically connected with the central controller 3, and the marking key consists of a mode key and a power on/off key.
The AC-DC converter 2 is fixed at the bottom in the frame 22 through fastening screws, the AC-DC converter 2 is electrically connected with the central controller 3, the power supply, the first micro pump 23, the second micro pump 14 and the semiconductor refrigerating sheet 19 respectively, and the AC-DC converter can adopt a power supply converter +/-15V/+/-4A, WA3-220S05A 3.
As shown in fig. 8, the central controller 3 includes a temperature control module 24, an alarm module 25, and a speed control module 26. The central controller 3 is electrically connected to the touch screen 1. The central controller 3 may adopt a 51-chip microcomputer or a high-end reduced instruction set machine or a field programmable gate array. The first temperature sensor 17 and the second temperature sensor 6 respectively monitor the temperature of the heat-conducting oil in the pot body 5 and the temperature of the circulating liquid in the liquid storage tank 8 in real time. The command output of the temperature control module 24 includes two routes: route I is that after the temperature of the heat conduction oil in the pot body 5 is compared with the manually input required temperature, the temperature control module 24 controls the temperature control box, the semiconductor refrigerating sheet 19 and the arc-shaped heating rod 9 to operate in a matched mode so as to reach the required temperature, and the route is used for controlling the temperature of the oil bath in the pot body 5. The circuit II is that when the temperature of the liquid storage in the liquid storage box 8 is within the range of the set lowest temperature and the set highest temperature, the semiconductor refrigeration piece 19 normally operates. When the temperature of the circulating liquid reaches the set lowest temperature or the set highest temperature, the semiconductor refrigerating sheet 19 stops working, and the circuit is used for ensuring the working efficiency of the semiconductor refrigerating sheet 19 and the safety of equipment. Line ii takes precedence over line i. When the second temperature sensor 6 monitors that the temperature reaches only the set maximum temperature, the alarm module 24 issues an alarm. The speed control module 26 controls the rotation speed of the magneton 13 by adjusting the rotation speed of the motor 15.
The temperature control box includes: the device comprises a recycling box body 16, a box body mounting frame 18, a second micro pump 14, a second temperature sensor 6, a nozzle 7, a liquid storage box 8, a liquid storage box pressing plate 20, a recycling box pressing plate 4, a recycling box cover 11, an upper thin tube 12 and a lower thin tube 10. The recovery box body 16 is an annular square cavity structure body, and the lower end of the recovery box body is of an inverted trapezoidal structure and is used for enriching the circulating liquid. The top surface of the upper end of the annular cavity of the recovery box body 16 is open, the inner bottom surface is provided with a plurality of mounting holes of the nozzles 7, and the top surface of the lower end is provided with a connecting hole for arranging a lower thin tube 10 communicated with a second micro pump 14. The top surface of the upper end of the annular square cavity of the recovery box body 16 is hermetically connected with the recovery box cover 11, the lower end of the annular square cavity is fixed on the bottom wall of the frame 22 through a box body mounting frame 18, and the outer wall of the recovery box body 16 is uniformly coated with a heat insulation coating. The liquid storage box 8 is a square cavity body and is fixed in the center of the annular square cavity of the recovery box body 16 through a box body mounting frame 18, a plurality of nozzles 7 are arranged in the inner bottom surface of the upper end of the annular square cavity of the recovery box body 16 and are communicated, and the lower surface of the liquid storage box body is communicated with the second micropump 14 through penetrating the upper thin tube 12. The liquid storage box 8 is a square cavity and is fixed in the center of the annular square cavity of the recovery box body 16 through a box body mounting frame 18, the upper surface of the liquid storage box is connected with a plurality of nozzles 7 arranged on the inner bottom surface of the upper end of the annular square cavity of the recovery box body 16, and the lower surface of the liquid storage box is connected with a second micropump 14 through an upper thin pipe 12 which penetrates and extends. The liquid storage tank 8 is internally provided with a second temperature sensor 6 for storing circulating liquid, and the outer wall of the liquid storage tank is uniformly coated with a heat insulation coating. The second temperature sensor 6 is preferably an infrared temperature sensor or a probe sensor, and the temperature sensor is electrically connected with the temperature control module 24. The infrared temperature sensor can adopt GY-906-BCC, GY-906-BAA, GY-906-DCI infrared temperature sensor and the like. 7 lower extremes of nozzle even have the tubule, and the tubule passes 16 rectangle inner ring upper surface round holes of collection box and 8 upper surface screw thread base screw thread bases of liquid reserve tank, stretches into the 8 bottoms of liquid reserve tank but contactless, and 7 head portions of nozzle get into in the 12 annular cavities of collection box, and the screw thread base fixed mounting of liquid reserve tank 8 is passed through to the bottom. The joints of the nozzle 7, the thin tube, the liquid storage tank 8 and the recovery tank 12 are all sealed.
As shown in fig. 5, the cover 11 of the recycling bin is a rectangular corrugated thin-wall cover, so that under the condition that the spray distance of the nozzle is not changed, the heat conduction area of the convective heat transfer is effectively increased, the upstream and downstream resistances in the pipeline are reduced, the energy loss caused by the vortex generated in the pipeline is improved, and the heat conduction efficiency of the convective heat transfer is effectively improved.
As shown in fig. 6, the recycling bin body 16 is an annular square cavity structure, and the lower end of the recycling bin body is in an inverted trapezoid structure and is used for enriching the circulating liquid. The top surface of the upper end of the annular cavity of the recycling box body 16 is open, the inner bottom surface is provided with a plurality of mounting holes of the nozzles 7, and the top surface of the lower end is provided with a connecting hole for arranging a lower thin tube 10 communicated with the second micro pump 14.
As shown in fig. 7, the tank mounting frame 18 is an H-shaped structure provided with two mounting planes, a liquid storage tank 8 is arranged on the upper plane of the upper layer, and the periphery of the liquid storage tank 8 is fixedly connected through a liquid storage tank fixing pressing plate 20; the lower layer lower plane is placed on the recycling bin body 16, and two side surfaces of the recycling bin body 16 are fixed through a recycling bin pressing plate 4; a second micropump 14 is arranged between the two layers of installation planes; the bottom surfaces of the two vertical walls of the box body mounting frame are provided with outward flanges which are fixedly connected with the frame 22 through screws.
Taking the novel heating and refrigerating integrated pot of the invention as an example for heating, the scheme of the invention is further explained as follows:
after the experiment preparation is completed, an operator opens a switch of the novel heating and refrigerating integrated reaction pot, sets a heating temperature T1 and a stirring speed V1 through the touch screen 1 to enable the reaction pot to start working, and the first micro pump 23 and the motor 15 run. The first micro pump 23 pushes the heat conducting oil to circulate in the oil bath circulating pipe 21 and the pot body 5, so that the heat conducting oil in the pot body 5 is uniformly heated. The industrial personal computer detects the current pan temperature T2, the central controller calculates the temperature difference DeltaTh (T1-T2), when the DeltaTh is less than 0, the industrial personal computer reports the error and displays the abnormal work; when the industrial personal computer detects that the liquid storage temperature T3 is higher than the set minimum temperature, the active heating system and the auxiliary heating system work, the industrial personal computer displays that the heating work is in progress, and the touch screen displays the real-time temperature; when T3 is the set lowest temperature and the Delta Th is more than or equal to 10 ℃, the auxiliary heating system stops working, the active heating system only completes heating, and the touch screen prompts that the set heating temperature is about to be reached; when the temperature difference is more than 10 ℃ and more than or equal to 0 ℃ and delta Th, the active heating system works discontinuously, the temperature difference is stabilized to +/-3 ℃, the touch screen prompts heat preservation, and an operator can be prompted to perform next stirring work or automatically complete the stirring work according to the setting.
Wherein the active heating system controls the arc-shaped heating rod 9 to heat for the central controller 3. The auxiliary heating system controls the AC/DC converter 2 for the central controller 3 to make the semiconductor refrigeration piece 19 and the second micro pump 14 work, and the heating work is performed by the semiconductor refrigeration piece 19. The second micro pump 14 makes the recycling box body 16 and the liquid storage box 8 form a pressure difference, and the circulating liquid enters a cavity flow channel formed by the recycling box body 16 and the recycling box cover 11 through the nozzle 7. At this time, the hot end of the semiconductor refrigeration sheet 19 is the upper surface, and the cold end is the lower surface. Heat conducting oil in the oil bath circulating pipe 21 flows through the upper surface of the semiconductor refrigerating sheet 19 to be heated, and circulating liquid in the liquid storage tank 8 is sprayed out through the nozzle 7 to be contacted with the box cover 11 of the recovery tank to be cooled.
Taking the novel heating and refrigerating integrated pot of the invention as an example for refrigerating, the scheme of the invention is further explained as follows:
after the experiment preparation is completed, an operator opens a novel heating and refrigerating integrated reaction pot switch, the cold temperature T4 and the stirring speed V1 are set through the touch screen 1, so that the reaction pot starts to work, and the first micro pump 23 and the motor 15 run. The first micro pump 23 pushes the heat conducting oil to circulate in the oil bath circulating pipe 21 and the pot body 5, so that the heat conducting oil in the pot body 5 is uniformly heated.
The industrial personal computer detects the current pan temperature T2, the central controller calculates the temperature difference DeltaTh (T4-T2), when the DeltaTh is greater than 0, the industrial personal computer reports an error and displays the abnormal work; when the industrial personal computer detects that the stock solution temperature T3 is lower than the set maximum temperature, the semiconductor system works, the industrial personal computer displays that the semiconductor system is refrigerating, and the touch screen displays the real-time temperature; when the T4 is the set highest temperature, the semiconductor refrigeration system stops working and executes a safety mode; when the temperature difference is 10 ℃ plus/minus Delta Th is more than or equal to 0 ℃, the semiconductor refrigeration system works discontinuously, the temperature difference is stabilized to +/-3 ℃, and the touch screen prompts an operator to perform the next stirring work or automatically complete the stirring work according to the setting during the temperature preservation.
The semiconductor refrigeration system controls the alternating current-direct current converter 2 for the central controller 3 to enable the semiconductor refrigeration sheet 19 and the second micro pump 14 to work. At this time, the cold end of the semiconductor refrigeration sheet 19 is the upper surface, and the hot end thereof is the lower surface. The second micro pump 14 makes the recycling box body 16 and the liquid storage box 8 form a pressure difference, and the circulating liquid enters a cavity flow channel formed by the recycling box body 16 and the recycling box cover 11 through the nozzle 7. The circulating liquid contacts the box cover 11 of the recovery box to absorb heat generated by the hot end of the semiconductor refrigerating sheet 19. The second temperature sensor 6 feeds back the temperature of the circulating liquid in real time, when the temperature of the circulating liquid reaches the set highest temperature, the alarm module 25 gives an alarm, the instrument stops working, and after five minutes, the safety mode is executed. In the safety mode, the central controller 3 controls the ac/dc converter 2 to operate the semiconductor cooling plate 19 and the second micro pump 14. At this time, the hot end of the semiconductor refrigeration sheet 19 is the upper surface, and the cold end is the lower surface. The second micro pump 14 makes the recovery box body 16 and the liquid storage box 8 form a pressure difference, and the circulating liquid enters a cavity flow passage formed by the recovery box body 16 and the recovery box cover 11 through the nozzle 7. The circulating liquid contacts the cover 11 of the recovery box to release heat until the temperature of the circulating liquid is reduced to the set minimum temperature.
Taking the operation of the liquid storage tank 8 of the present invention as an example, the above scheme of the present invention is further explained:
in order to ensure the safe operation of the semiconductor refrigeration sheet 19 and improve the operation efficiency, the liquid circulation liquid in the liquid storage tank 8 has different functions under different working modes, and the operation conditions in the liquid storage tank 8 are as follows:
during refrigeration, the cold end of the semiconductor refrigeration sheet 19 is the upper surface, the hot end is the lower surface, the cold end cools the heat conducting oil in the oil bath circulation pipe 21, and the circulation liquid in the liquid storage tank 8 cools the hot end through the recovery tank body 16. The second micro pump 14 operates, high pressure is formed inside the liquid storage tank 8, negative pressure is formed inside the recovery tank body 16, and the pressure difference between the high pressure and the negative pressure enables the nozzle 7 to reach working pressure. The circulating liquid is sprayed into a cavity flow channel of a recycling box body 16 through a nozzle 7, the circulating liquid is in contact with the wall of a box cover 11 of the recycling box and is vaporized when being heated, part of unvaporized liquid circulating liquid is gathered at the bottom of the recycling box body 16 through the cavity flow channel of the recycling box body 16, the unvaporized liquid circulating liquid is pumped into the liquid storage box 8 again through a second micro pump 14 through a lower thin pipe 10, and the vaporous circulating liquid moves directionally through the recycling box body 16 under the action of air pressure, is liquefied again through the second micro pump 14, enters the liquid storage box 8 and is circulated again. When the process is operated, the circulating liquid has the characteristic of a phase-change material, the heat at the hot end of the semiconductor refrigerating sheet 19 is stored, and the stored heat can be used for releasing heat at the cold end of the semiconductor refrigerating sheet 19 when the semiconductor refrigerating sheet 19 is heated, so that the efficiency of the semiconductor refrigerating sheet is improved, and the cyclic utilization of energy is completed. If the temperature of the liquid storage in the liquid storage box 8 reaches the set highest temperature, the alarm module 25 gives an alarm, and the semiconductor refrigeration piece and the second micro pump 14 stop running. After 5 minutes, the system is restarted, the central controller 3 controls the alternating-current/direct-current converter to electrically and reversely connect the semiconductor refrigerating sheet 19, the work that the hot end is the upper surface and the cold end is the lower surface is carried out, and the circulating liquid is cooled.
During the heating, if the circulating liquid temperature does not reach and sets for minimum temperature, the 19 hot junctions of semiconductor refrigeration piece are the upper surface, and the cold junction is the lower surface, and the hot junction heats the conduction oil in the oil bath circulating pipe 21, and 8 inner loop liquid in the liquid reserve tank heat the cold junction through the nozzle, and the heat is released, and gaseous circulation liquid condenses in the liquid reserve tank. If the temperature of the circulating liquid is the lowest set temperature, the temperature control box does not operate.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A heating and refrigerating integrated pot is characterized by comprising a frame, a pot body assembly, an industrial personal computer, a semiconductor refrigerating sheet and a temperature control box, wherein the pot body assembly, the semiconductor refrigerating sheet and the temperature control box are sequentially installed in the frame from top to bottom; wherein,
the frame is a square frame with a cavity, a circular through hole for accommodating the pot body assembly is formed in a top plate of the frame, and a rectangular through groove for mounting the industrial personal computer is formed in one side plate of the frame;
the pan body assembly comprises a pan body, a first micro pump, an arc-shaped heating rod, a first temperature sensor, a magnetic stirrer and an oil bath circulating pipe, wherein the pan body is provided with an annular outward flange; 2 through holes with set intervals are arranged at the inner bottom of the pot body, wherein one through hole is provided with an oil bath circulating pipe penetrating through the pot body, and the other through hole is provided with an arc-shaped heating rod penetrating through the pot body; the first temperature sensor and the magnetic stirrer are installed at the outer bottom of the pot body, the electric heating wire part of the arc-shaped heating rod is installed at the inner bottom of the pot body, the first micro pump is installed on the other side wall of the frame, two ends of the first micro pump are respectively communicated with two ends of an oil bath circulating pipe, the upper part of the oil bath circulating pipe is communicated with the pot body and the first micro pump, the lower part of the oil bath circulating pipe is in a rectangular zigzag shape, and the rectangular zigzag part is tightly attached to a semiconductor refrigerating sheet and a temperature control box below the oil bath circulating pipe, wherein the arc-shaped heating rod, the magnetic stirrer, the first micro pump and the first temperature sensor are respectively and electrically connected with the industrial personal computer;
the industrial personal computer comprises a box body, a touch screen, a central controller and an alternating current-direct current converter, wherein the box body is arranged in a rectangular through groove formed in one side plate of the frame;
the semiconductor refrigeration pieces are arranged on the upper surface of a groove of a box cover of a recovery box of the temperature control box in pairs, the bottoms of the semiconductor refrigeration pieces are adhered to the box cover of the recovery box, and a circuit line penetrates through a box body of the industrial personal computer and is connected with the central controller;
the temperature control box comprises a recycling box body, a recycling box cover, a liquid storage box, a box body mounting frame, a second micropump, a second temperature sensor, an upper tubule, a lower tubule and nozzles, wherein the recycling box body is an annular square cavity structure body, the lower end of the recycling box body is of an inverted trapezoidal structure, the top surface of the upper end of the annular square cavity of the recycling box body is opened, the inner bottom surface of the recycling box body is provided with a mounting hole for mounting a plurality of nozzles, the top surface of the lower end of the recycling box body is provided with a connecting hole for arranging the lower tubule communicated with the second micropump, the top surface of the upper end of the annular square cavity of the recycling box body is hermetically connected with the recycling box cover, the lower end of the annular square cavity of the recycling box body is fixed on the bottom wall of the frame through the box body mounting frame, the appearance of the recycling box cover, fix at the cyclic annular square cavity central authorities of collection box through the box mounting bracket, a plurality of nozzles of bottom surface mounting are connected in the cyclic annular square cavity upper end of upper surface and collection box, and the lower surface is through the last tubule and the second micropump intercommunication of stretching, second temperature sensor settles the liquid reserve tank in.
2. A heating and cooling integrated pan as claimed in claim 1, wherein the distance between the connecting holes is 4/5 of the diameter of the pan body.
3. The heating and cooling integrated pot as claimed in claim 1, wherein the oil bath circulation pipe is a heat conduction connection pipe with fins on the inner layer.
4. The heating and cooling integrated pot according to claim 1, wherein the central controller comprises a temperature control module, a speed module, an alarm module and an AC/DC converter.
5. The heating and cooling integrated pot as claimed in claim 1, wherein the touch screen is provided with an identification key, a working key and a fault key.
6. The heating and cooling integrated pot as claimed in claim 1, wherein the outer wall of the recycling bin body, the outer wall of the recycling bin cover and the inner and outer walls of the liquid storage bin are coated with heat insulating coatings.
7. The heating and refrigerating integrated pot as claimed in claim 1, wherein the tank body mounting frame is an H-shaped structure provided with two mounting planes, a liquid storage tank is arranged on the upper plane of the upper layer, and the peripheries of the liquid storage tank are fixedly connected through a liquid storage tank fixing pressing plate; the lower layer lower plane is placed on the box body of the recycling box, and two side surfaces of the box body of the recycling box are fixed through a box body fixing pressing plate of the recycling box; a second micro pump is arranged between the two layers of mounting planes; the bottom surfaces of the two vertical walls of the box body mounting frame are provided with outward flanges which are fixedly connected with the frame through screws.
8. The heating and refrigerating integrated pot as claimed in claim 1, wherein a circulating liquid is arranged in the liquid storage tank, the circulating liquid is prepared by taking an in-situ polymerization method as a synthesis method, taking melamine modified formaldehyde resin as a wall material, taking prepared paraffin phase change microcapsule suspension or adopting an in-situ polymerization method, taking Sodium Dodecyl Sulfate (SDS) as an emulsifier, adding 6% of NaCl, and synthesizing a microcapsule phase change material taking urea formaldehyde resin as a shell material and an alkane phase change material RLIBITHERM RT26 as a core material, wherein the prepolymer/core material ratio is 3:1, the emulsifying stirring rotation speed is 15000rmp, and the using amount of the emulsifier sodium dodecyl sulfate is 8%.
9. A heating and refrigerating method of a heating and refrigerating integrated pot is characterized by comprising the following two methods:
the heating method comprises the following specific steps:
step 1, setting a heating temperature T1 and a stirring speed V1 through a touch screen 1, starting to work, and driving heat conduction oil to circulate in a pot body and an oil bath circulation pipe by a first micro pump in a pneumatic mode; the industrial personal computer detects the current temperature T2 in the pan and the temperature T3 of the liquid storage in the liquid storage tank;
step 2, the central controller calculates the temperature difference DeltaTh (T1-T2), and the central controller judges T3 and DeltaTh;
step 3, judging a condition I, wherein T3 is a set lowest temperature and Delta Th is more than 10 ℃; judging that the temperature T3 is not the set temperature under the second judgment condition; judging a third condition, wherein T3 reaches a set minimum temperature and the heating work is not finished; judging the condition four, wherein the temperature is more than 10 ℃, and the Delta Th is more than or equal to 0 ℃;
step 4, executing the first condition, wherein the heating work is only completed by an active heating system; judging a condition II, wherein the heating work is finished by an auxiliary heating system; judging a condition III, and switching the auxiliary heating system to the active heating system; judging a fourth condition, intermittently operating the active heating system, stabilizing the temperature difference within +/-3 ℃, and prompting the heat preservation by the touch screen;
the refrigeration method comprises the following specific steps:
step 1, setting a refrigeration temperature T4 and a stirring speed V1 through a touch screen 1, starting to work, and driving heat conduction oil to circulate in a pot body and an oil bath circulation pipe by a first micro pump in a pneumatic mode; the industrial personal computer detects the current temperature T2 in the pan and the temperature T3 of the liquid storage in the liquid storage tank;
step 2, the central controller calculates the temperature difference DeltaTh (T4-T2), and the central controller judges T3 and DeltaTh;
step 3, judging the condition I, wherein T3 is lower than the set highest temperature; judging the condition II, wherein T3 is the set highest temperature; judging the condition is three, when the temperature is higher than | Delta Th | > is more than or equal to 0 ℃;
step 4, executing the condition I, and enabling the semiconductor refrigeration system to work; judging a second condition, and executing a safety mode; and judging the condition III, namely, the semiconductor refrigeration system works discontinuously, the temperature difference is stabilized to +/-3 ℃, and the touch screen prompts heat preservation.
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| DE4142842A1 (en) * | 1991-09-26 | 1993-04-01 | Wolfgang Wasserthal | Portable cool container pref. powered from solar energy or car battery - has insulated cover, lower part and gravity-operated coolant |
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