CN101907368A - Refrigerated constant temperature pot - Google Patents
Refrigerated constant temperature pot Download PDFInfo
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- CN101907368A CN101907368A CN 201010220406 CN201010220406A CN101907368A CN 101907368 A CN101907368 A CN 101907368A CN 201010220406 CN201010220406 CN 201010220406 CN 201010220406 A CN201010220406 A CN 201010220406A CN 101907368 A CN101907368 A CN 101907368A
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- module
- constant temperature
- semiconductor chilling
- chilling plate
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Abstract
The invention discloses a refrigerated constant temperature pot, comprising a metal pot body and a hollow radiating shell, wherein the metal pot body is used for containing articles to be refrigerated; an inner cavity of the radiating shell is internally provided with a control circuit and a fan set connected with the control circuit; the middle of the upper part of the pot body is provided with a through-hole in which a metal radiating fin is embedded; an isolated layer the middle part is arranged above the upper part of the metal radiating fin, one or more semiconductor refrigeration pieces which are electrically connected with the control circuit are embedded in the middle part of the isolated layer; and the metal pot body is closely clung to the upper part of the isolated layer. The pot can realize the rapid refrigeration and refrigerated constant temperature storage of the articles, especially foods.
Description
Technical field
The present invention relates to the refrigerated constant temperature field of article, relate in particular to the cooling of food, speed is cold, the refrigerated constant temperature pot that cryogenic thermostat is preserved.
Background technology
The main compressor formula refrigerator cooling that relies on is especially preserved in the refrigerated constant temperature field of food in the refrigerated constant temperature field of article at present.Refrigerator is to utilize the effect of cooling by evaporation or gasification heat absorption and the purpose that reaches refrigeration.In the trunnion of refrigerator, refrigerant is housed, boiling point is all very low to be generally 29 ℃.During the refrigerant gas state, pressurizeed by compressor reducer, pressurization is after trunnion flows to the condenser at refrigerator back, borrow fin heat radiation (material be compressed after, temperature will raise) after, condensation forms liquid.The refrigerant of liquid enters after the valve of evaporimeter, owing to broken away from the pressure of compressor reducer, just turns to steam immediately, and the absorption latent heats of vaporization such as air in refrigerator and food cause the refrigerator inside cooling simultaneously.Fluorine Lyons after the vaporization is pushed back the outer condenser heat radiation of case by compressor reducer again, becomes liquid again, so move in endless cycles, the heat energy pump in the refrigerator outside case.The shortcoming of aforementioned refrigerated constant temperature mode is that energy consumption is big, and the energy consumption that often needs kilowatt, and it is longer to reach the time that chilling temperature needs is generally and hour is unit.Secondly volume is very big, and is portable bad, is inconvenient to go out to carry, and this external noise is also bigger.Most important reason is that cold-producing medium has pollution to environment.
Summary of the invention
Technical problem to be solved by this invention provides a kind of low-power consumption, low noise, pollution-free, refrigeration rapidly and control reliable and good portable pot suitable family expenses and automobile-used are arranged, realize the article especially rapid cooling of food and the refrigerated constant temperature pot that refrigerated constant temperature is preserved.
For addressing the above problem, the refrigerated constant temperature pot that the present invention is designed, comprise for treating the metal pan body that refrigerated product holds, and the heat radiation shell of a hollow, the fan group that is mounted with control circuit and is electrically connected in the internal cavities of heat radiation shell with control circuit, the center upper portion of pot body offers a through hole, the embedded unification metal fin of through hole, the top of metal fin is provided with a separation layer, the embedded semiconductor chilling plate more than 1 or 1 in the middle part of separation layer, this semiconductor chilling plate is electrically connected with control circuit, and the metal pan body is close to the top of separation layer.
In the such scheme, be provided with a huyashi-chuuka (cold chinese-style noodles) layer between metal pan body and the separation layer, be provided with the draw-in groove of " 7 font " around this huyashi-chuuka (cold chinese-style noodles) layer, draw-in groove matches with the convex clip that the metal pan body is provided with all around, and the metal pan body is connected by precompressed spinner mode with the huyashi-chuuka (cold chinese-style noodles) layer.
Because the heat conductivity of copper and solid is good and aluminium alloy and air heat conductivity are good, described metal fin is preferably metal fin made of copper, and the shell that dispels the heat is the heat radiation shell that is preferably aluminum, so that improve its radiating efficiency.
The described control circuit of such scheme mainly is made up of power supply and the control module that is attached thereto, man-machine interface, power driver module, refrigeration work consumption module, fan power module, Hall current sensor and 2 temperature sensors; Man-machine interface links to each other with control module, and the output of control module connects refrigeration work consumption module and fan power module respectively through power driver module, and the refrigeration work consumption module connects semiconductor chilling plate, and the fan power module connects the fan group; Hall current sensor is arranged on that semiconductor chilling plate place, first temperature sensor paste mutually with the metal pan body, second temperature sensor and metal fin paste mutually, and the output of Hall current sensor, first temperature sensor and second temperature sensor all is connected to control module.
Preferably also be serially connected with a protection module between described second temperature sensor and the control module, this protection module receives the feedback signal that second temperature sensor transmits, and is used to judge whether refrigerated constant temperature pot breaks down, and judged result is sent to control module.
In order to reduce noise and to reach energy-conservation target, the described control circuit of such scheme preferably also comprises a speed probe, and this speed probe is arranged on fan group place, and its output is connected to control module.
In order to increase the reliability of refrigerated constant temperature pot, described power supply is preferably three groups of power supplys of isolating mutually, and first group of power supply is connected with control module, and second group of power supply is connected on the power driver module, and the 3rd group of power supply links to each other with semiconductor chilling plate.
As the further improvement of such scheme, also be serially connected with a power supply phase inverter between the 3rd group of power supply and the semiconductor chilling plate, the control end of this power supply phase inverter and the output of control module join.Because semiconductor chilling plate has the refrigeration effect when loading forward voltage; And when loading negative voltage, have this characteristic of the effect of heating, therefore, when the power supply phase inverter can be carried in backward voltage on the semiconductor chilling plate, this refrigerated constant temperature pot can play the effect that heats.
Compared with prior art, the present invention has following beneficial effect:
1, compare with the refrigeration of traditional refrigerator, its operate power can be so that power consumption descends in a large number within 200W;
2, the control aspect of semiconductor chilling plate can adopt according to the C-V characteristic of semiconductor chilling plate and do current/voltage control, makes refrigerator efficient height, and under this control model, the caloric value of power model is little in addition, and efficient is also higher;
3, good portability, easy to carry; Use flexibly, refrigerated constant temperature is rapid, does not need to be in the non-stop run state as original refrigerator.
Description of drawings
Fig. 1 is the exploded perspective view of a kind of refrigerated constant temperature pot of the present invention;
Fig. 2 is the structure chart after Fig. 1 combination;
Fig. 3 is the schematic diagram of control circuit of the present invention.
Description of drawings: 1, heat radiation shell; 2, metal fin; 3, separation layer; 4, semiconductor chilling plate; 5, huyashi-chuuka (cold chinese-style noodles) layer; 6, metal pan body; 7, fan group; 8, control circuit; 10, man-machine interface.
The specific embodiment
The structure of a kind of refrigerated constant temperature pot of the present invention as depicted in figs. 1 and 2, it mainly contains metal pan body 6, heat radiation shell 1, control circuit 8, fan group 7, metal fin 2, separation layer 3 and semiconductor chilling plate 4 and constitutes.The bottom of metal pan body 6 is the plane, is used to hold for treating refrigerated product.Heat radiation shell 1 offers the hollow structure of through hole for center upper portion.Control circuit 8 and the fan group 7 that is electrically connected with control circuit 8 are placed in the internal cavities of heat radiation shell 1.Metal pan body 6, semiconductor chilling plate 4, separation layer 3 and metal fin 2 overlay the through hole from top to bottom.Metal fin 2 is entrenched in the inside of through hole, and its sidewall pastes mutually with the sidewall of through hole.The top of metal fin 2 is provided with a separation layer 3.The embedded semiconductor chilling plate 4 more than 1 or 1 in the middle part of separation layer 3, this semiconductor chilling plate 4 is electrically connected with control circuit 8, and metal pan body 6 is close to the top of separation layer 3.Separation layer 3 adopts the heat-insulating flame-retardant material to constitute, and the thickness of thickness and semiconductor chilling plate 4 is suitable, and it not only can stop the heat exchange between metal pan body 6 and the metal fin 2, can also avoid causing the damage of dewfall to electronic device owing to cold and heat succeed each other.In addition, be provided with a huyashi-chuuka (cold chinese-style noodles) layer 5 between metal pan body 6 and the separation layer 3, be provided with the draw-in groove of " 7 font " around this huyashi-chuuka (cold chinese-style noodles) layer 5, draw-in groove matches with the convex clip that metal pan body 6 is provided with all around, and metal pan body 6 is connected by precompressed spinner mode with huyashi-chuuka (cold chinese-style noodles) layer 5.Huyashi-chuuka (cold chinese-style noodles) layer 5 is made of the good material of the coefficient of heat conduction, and the front contacts well with the bottom of metal pan body 6, and reverse side contacts with the huyashi-chuuka (cold chinese-style noodles) of semiconductor chilling plate 4.Heat radiation shell 1, metal fin 2 and fan group 7 have constituted the radiator structure of refrigerated constant temperature pot.Metal fin 2 adopts metal fin 2 made of copper.The through hole on heat radiation shell 1 top is up big and down small structure, and the bottom of its through hole forms a class shelf board structure and shelves for metal fin 2, and guarantees that both contacts area are more than 2/3rds.Heat radiation shell 1 is made the form with air contact area maximum, and the side of the shell 1 that promptly dispels the heat also offers the radiating groove of many fin structures.Fan group 7 is installed near the radiating groove, keeps the smooth and easy of air channel, makes quick and heat radiation shell 1 convection current of air to strengthen exhaust air rate, utilizes the draft effect of fan group 7 that heat is detached heat radiation shell 1.The principle that it is good that this mode makes full use of the good and aluminium alloy of the heat conductivity of copper and solid and air heat conductivity makes radiating efficiency improve greatly.
The control circuit 8 that is installed in heat radiation shell 1 inside mainly is made up of power supply and the control module that is attached thereto, man-machine interface 10, power driver module, refrigeration work consumption module, fan power module, Hall current sensor, speed probe and 2 temperature sensors as shown in Figure 3.Described power supply can external civil power or dc source, it has comprised three groups of insulating power supplies, first group of power supply is connected with control module, second group of power supply is connected on the power driver module, the 3rd group of power supply links to each other with semiconductor chilling plate 4, do making each Circuits System circuit isolate like this, increase the reliability of integrated circuit.Man-machine interface 10 links to each other with control module, is responsible for being provided with the mode of operation of refrigerated constant temperature pot, the temperature of control metal pan body 6.The output of control module connects refrigeration work consumption module and fan power module respectively through power driver module.The refrigeration work consumption module connects semiconductor chilling plate 4, is used to control the voltage V of semiconductor chilling plate 4
1With electric current A
1The fan power module connects fan group 7, is used to control the voltage V that is carried on the fan group 7
2, i.e. the rotating speed of fan group 7.Hall current sensor is arranged on semiconductor chilling plate 4 places, is used to measure the electric current A1 of the power section of semiconductor chilling plate 4.With semiconductor chilling plate 4 main power lines is that power line passes Hall current sensor, and Hall current sensor is powered with DC ± 12V, and its electric current output pin is connecting resistance over the ground, the module of Access Control simultaneously.Temperature sensor is used to gather associated temperature information, and wherein first temperature sensor pastes mutually with metal pan body 6, is used for measuring pot surface temperature T
1, second temperature sensor pastes mutually with metal fin 2, is used for measuring a pot surface temperature T
2Speed probe is arranged on fan group 7 places, is used to detect the rotating speed of fan group 7.Fan group 7 adopts direct current generator, and its direct current generator itself carries hall position sensor, and the signal of this hall position sensor directly advances control module.The output of above-mentioned Hall current sensor, speed probe, first temperature sensor and second temperature sensor all is connected to control module.In addition, also be serially connected with a protection module between described second temperature sensor and the control module, this protection module receives the feedback signal that second temperature sensor transmits, and is used to judge whether refrigerated constant temperature pot breaks down, and judged result is sent to control module.
The storage inside of above-mentioned control module has the control program of TPI temperature control algorithm.Whole system controls refrigerated constant temperature pot according to the signal of each sensor and the setting value of man-machine interface 10, makes pot surface temperature cooling and constant temperature fast.Above-mentioned TPI temperature control algorithm has comprised control cycle, self-regulating algorithm of temperature sampling cycle.Quote in the pid algorithm the PI factor as control the basis.The TPI algorithm be C-V characteristic with semiconductor chilling plate 4 self as the control target, cooperate hardware circuit to control a kind of algorithm of voltage and current simultaneously at semiconductor chilling plate 4.The selected TPI algorithm of the present invention has comprised the P in the pid algorithm substantially, the I factor, added simultaneously to temperature increase progressively the mean value algorithm, utilize temperature at a time between variation tendency in the cycle as temperature factor, adopt temperature sensors of high precision to make precision reach 0.05 degree centigrade.The TPI algorithm is converted into curve with the C-V characteristic of semiconductor chilling plate 4, and in the algorithm that quantizes, make semiconductor chilling plate 4 refrigerating efficiency height, the TPI algorithm decides the rotating speed of fan according to the radiator temperature that measures simultaneously, reaches and reduces noise and energy-conservation target.At first prestore semiconductor chilling plate 4 VA characteristic curve tables in control module, this curve is by semiconductor chilling plate 4 decision itself, and it is measured semiconductor chilling plate 4 by Testing Instrument for Volt-ampere Characteristic when design and obtains.During use, set by man-machine interface 10
Controller receives the pot surface temperature T that first temperature sensor, second temperature sensor and Hall element feed back
1, radiator copper billet temperature T
2And the electric current A of the power section of semiconductor chilling plate 4
1The signal that control module is returned according to setting value and each sensor of man-machine module calculates input semiconductor chilling plate 4 both end voltage V by following formula
1With semiconductor chilling plate 4 electric current A
1Deliver to the work that the refrigeration work consumption module is controlled semiconductor chilling plate 4 as output signal.
V
1＝(K
1×P+K
2×I)×K
3 1
In the formula 1: P is T1 temperature difference T in two sampling periods
Δ=(T
11-T
12).I is adjacent two T
ΔNumerical difference between T
0=(T
Δ 1-T
Δ 2).K
1Be the P coefficient, its value can be rule of thumb by man-machine interface 10 inputs, K among the present invention
1Span be selected between the 0.1-0.9, and in the preferred embodiment of the present invention, K
1Value selects 0.5 for use.K
2Be the I coefficient, its value equally can be rule of thumb by man-machine interface 10 inputs, K in invention
2Span be selected between the 0.01-0.09, and in the preferred embodiment of the present invention, K
2Value selects 0.07 for use.K
3Be proportionality coefficient, by T
2With T
1The coefficient decision of the temperature difference, this T
2With T
1Temperature difference coefficient be directly proportional with the T1 temperature value, and finish by tabling look-up.K
3Numerical value obtains by experience, and span is preferably 1.2 between 0.1-2.0.
A
1＝K
4×V
1 2
In the formula 2: K
4Be the C-V characteristic coefficient, fixed by the C-V characteristic voting that is stored in advance in the control module.
In addition, control module of the present invention also is provided with fan group 7 both end voltage V
2Computing formula, promptly
V
2＝(T
2-T
1)×K
5 3
In the formula 3: K
5Be temperature coefficient, by the experience decision, its scope can be selected between the 0.0-0.5, in the preferred embodiment of the present invention, and K
5Value selects 0.2 for use.
Control module is with gained fan group 7 both end voltage V
2Deliver to the fan power mould and regulate the rotating speed of fan.Because temperature range is-10 a ℃-normal temperature in this patent, and semiconductor chilling plate 4 temperature difference of selecting for use are at 30 ℃, fan voltage is DC12V, and for making rotation speed of the fan be controlled in 30 ℃ at pot face and radiator temperature difference, the rotating speed of fan reaches maximum when 30 ℃ of the temperature difference.So corresponding fan control voltage is DC12V in the time of 60 ℃.
Claims (8)
1. refrigerated constant temperature pot, comprise for treating the metal pan body (6) that refrigerated product holds, it is characterized in that: the heat radiation shell (1) that also comprises a hollow, the fan group (7) that is mounted with control circuit (8) and is electrically connected in the internal cavities of heat radiation shell (1) with control circuit (8), the center upper portion of pot body offers a through hole, the embedded unification metal fin of through hole (2), the top of metal fin (2) is provided with a separation layer (3), the embedded semiconductor chilling plate (4) more than 1 or 1 in the middle part of separation layer (3), this semiconductor chilling plate (4) is electrically connected with control circuit (8), and metal pan body (6) is close to the top of separation layer (3).
2. refrigerated constant temperature pot according to claim 1, it is characterized in that: be provided with a huyashi-chuuka (cold chinese-style noodles) layer (5) between metal pan body (6) and the separation layer (3), be provided with the draw-in groove of " 7 font " around this huyashi-chuuka (cold chinese-style noodles) layer (5), draw-in groove matches with the convex clip that metal pan body (6) is provided with all around, and metal pan body (6) is connected by precompressed spinner mode with huyashi-chuuka (cold chinese-style noodles) layer (5).
3. refrigerated constant temperature pot according to claim 1 is characterized in that: metal fin (2) is a metal fin made of copper (2), and heat radiation shell (1) is the heat radiation shell (1) of aluminum.
4. refrigerated constant temperature pot according to claim 1 is characterized in that: control circuit (8) mainly is made up of power supply and the control module that is attached thereto, man-machine interface (10), power driver module, refrigeration work consumption module, fan power module, Hall current sensor and 2 temperature sensors; Man-machine interface (10) links to each other with control module, and the output of control module connects refrigeration work consumption module and fan power module respectively through power driver module, and the refrigeration work consumption module connects semiconductor chilling plate (4), and the fan power module connects fan group (7); Hall current sensor is arranged on that semiconductor chilling plate (4) is located, first temperature sensor pastes mutually with metal pan body (6), second temperature sensor and metal fin (2) paste mutually, and the output of Hall current sensor, first temperature sensor and second temperature sensor all is connected to control module.
5. refrigerated constant temperature pot according to claim 4 is characterized in that: be serially connected with a protection module between second temperature sensor and the control module.
6. refrigerated constant temperature pot according to claim 4 is characterized in that: control circuit (8) also comprises a speed probe, and this speed probe is arranged on fan group (7) and locates, and its output is connected to control module.
7. refrigerated constant temperature pot according to claim 4, it is characterized in that: described power supply is three groups of power supplys of isolating mutually, first group of power supply is connected with control module, and second group of power supply is connected on the power driver module, and the 3rd group of power supply links to each other with semiconductor chilling plate (4).
8. refrigerated constant temperature pot according to claim 7 is characterized in that: also be serially connected with a power supply phase inverter between the 3rd group of power supply and the semiconductor chilling plate (4), the control end of this power supply phase inverter and the output of control module join.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102204062A CN101907368B (en) | 2010-07-07 | 2010-07-07 | Refrigerated constant temperature pot |
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|---|---|---|---|
| CN2010102204062A CN101907368B (en) | 2010-07-07 | 2010-07-07 | Refrigerated constant temperature pot |
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| CN101907368B CN101907368B (en) | 2012-02-29 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102999040A (en) * | 2012-09-26 | 2013-03-27 | 西安奥特迅电力电子技术有限公司 | Control platform for heat test on full-power operation of power unit of power electronic equipment and application method of control platform |
| CN105997334A (en) * | 2016-07-01 | 2016-10-12 | 苏州爱科意智能科技有限公司 | Wearable heating and cooling device |
| CN108549043A (en) * | 2018-06-26 | 2018-09-18 | 合肥中科离子医学技术装备有限公司 | A kind of cyclotron magnetic survey hall probe temperature control equipment |
| CN113359907A (en) * | 2021-05-27 | 2021-09-07 | 西安交通大学 | Quick-response active temperature control method |
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| US5941077A (en) * | 1998-12-21 | 1999-08-24 | Safyan; Bernard | Chill-hot buffet serving tray |
| CN1361402A (en) * | 2002-01-10 | 2002-07-31 | 岑礼昌 | Stepless temperature regulating electronic thermostat |
| US20060277924A1 (en) * | 2005-06-09 | 2006-12-14 | Robert Platkin | Cold hot server |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102999040A (en) * | 2012-09-26 | 2013-03-27 | 西安奥特迅电力电子技术有限公司 | Control platform for heat test on full-power operation of power unit of power electronic equipment and application method of control platform |
| CN102999040B (en) * | 2012-09-26 | 2015-10-28 | 西安奥特迅电力电子技术有限公司 | A kind of parametric controller and using method thereof of power electronic equipment power cell Operation at full power being carried out to Thermal test |
| CN105997334A (en) * | 2016-07-01 | 2016-10-12 | 苏州爱科意智能科技有限公司 | Wearable heating and cooling device |
| CN105997334B (en) * | 2016-07-01 | 2018-05-25 | 苏州爱科意智能科技有限公司 | A kind of wearable heating and cooling device |
| CN108549043A (en) * | 2018-06-26 | 2018-09-18 | 合肥中科离子医学技术装备有限公司 | A kind of cyclotron magnetic survey hall probe temperature control equipment |
| CN113359907A (en) * | 2021-05-27 | 2021-09-07 | 西安交通大学 | Quick-response active temperature control method |
| CN113359907B (en) * | 2021-05-27 | 2022-04-05 | 西安交通大学 | Quick-response active temperature control method |
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| CN101907368B (en) | 2012-02-29 |
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