CN111595096A - Temperature-regulating double-core semiconductor drinking liquid refrigerating system and refrigerating equipment - Google Patents
Temperature-regulating double-core semiconductor drinking liquid refrigerating system and refrigerating equipment Download PDFInfo
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- CN111595096A CN111595096A CN201910130480.6A CN201910130480A CN111595096A CN 111595096 A CN111595096 A CN 111595096A CN 201910130480 A CN201910130480 A CN 201910130480A CN 111595096 A CN111595096 A CN 111595096A
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- 239000007788 liquid Substances 0.000 title claims abstract description 198
- 239000004065 semiconductor Substances 0.000 title claims abstract description 155
- 230000035622 drinking Effects 0.000 title claims abstract description 139
- 238000005057 refrigeration Methods 0.000 claims abstract description 194
- 238000001816 cooling Methods 0.000 claims abstract description 45
- 238000005086 pumping Methods 0.000 claims abstract description 26
- 230000001276 controlling effect Effects 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 230000009977 dual effect Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 2
- 238000012546 transfer Methods 0.000 description 16
- 230000000694 effects Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 230000008901 benefit Effects 0.000 description 7
- 238000009529 body temperature measurement Methods 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000004519 grease Substances 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 235000020965 cold beverage Nutrition 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 230000005679 Peltier effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 235000015203 fruit juice Nutrition 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D31/00—Other cooling or freezing apparatus
-
- 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
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20154—Heat dissipaters coupled to components
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20218—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures
- H05K7/20245—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant without phase change in electronic enclosures by natural convection; Thermosiphons
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2029—Modifications to facilitate cooling, ventilating, or heating using a liquid coolant with phase change in electronic enclosures
- H05K7/20336—Heat pipes, e.g. wicks or capillary pumps
-
- 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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/16—Sensors measuring the temperature of products
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a temperature-regulating double-core semiconductor drinking liquid refrigerating system which comprises two semiconductor refrigerating chips, two hot end radiators, two liquid cooling heat exchange units, a pumping device, a storage container, a temperature sensor and a temperature control module, wherein the two liquid cooling heat exchange units are connected with the two semiconductor refrigerating chips; the hot ends of the two semiconductor refrigeration chips are respectively contacted with a hot end radiator, and the cold ends of the two semiconductor refrigeration chips are respectively contacted with a liquid cooling heat exchange unit; each liquid cooling heat exchange unit comprises a heat exchanger inlet and a heat exchange cavity, and the ratio of the cross-sectional area of the heat exchanger inlet to the cross-sectional area of the heat exchange cavity is 1: 10-150; the liquid cooling heat exchange unit, the storage container and the pumping device are connected into a closed-loop circulating liquid path system; the temperature control module is electrically connected with the temperature sensor, the pumping device, the first hot end radiator, the second hot end radiator, the first semiconductor refrigeration chip and the second semiconductor refrigeration chip. The invention also discloses a refrigerating device. The system and the equipment have strong refrigerating capacity and high refrigerating efficiency.
Description
Technical Field
The invention relates to a refrigeration technology, in particular to a temperature-regulating double-core semiconductor drinking liquid refrigeration system. The invention also relates to a refrigeration device.
Background
The refrigeration refers to a process of reducing or maintaining the temperature of an object below the temperature of the natural environment, and currently, a common refrigeration method includes a compression type refrigeration machine which drives a compressor by electric energy, realizes refrigeration cycle by using refrigerants such as ammonia and fluorine, and a semiconductor refrigeration chip which realizes the refrigeration process by the peltier effect of an N-type semiconductor material and a P-type semiconductor material. The compression type refrigerating machine has the advantages of high power and high refrigerating efficiency. The disadvantages are complex structure, large occupied volume, moving parts, easy damage and high noise. The semiconductor refrigeration chip has the advantages of no moving part, high stability, simple structure, small volume and no noise. The defects are that the power of a single piece is small, and the refrigeration efficiency is influenced by the temperature difference between the cold end and the hot end of the semiconductor refrigeration chip.
The existing semiconductor refrigeration equipment mostly adopts a method that the cold surface of a semiconductor refrigeration chip is contacted with a metal storage container to realize the temperature reduction of water, and also adopts a method that a heat exchange sheet contacted with the cold surface of the semiconductor refrigeration chip is soaked in the water to realize the refrigeration of the water, but the method mainly depends on the natural convection of the water to realize the conduction of heat in the storage container, the natural convection is formed by the temperature difference in liquid, the conduction effect is poor, and the refrigeration effect of the semiconductor refrigeration chip is influenced. There is also the technology of forced heat transfer that drives water circulation between heat exchanger fin or heat exchange room and storage container through the water pump, but current forced heat transfer technology is less to the route restriction of rivers, and the homogeneity of rivers is relatively poor, can not guarantee the heat transfer effect, has influenced semiconductor refrigeration chip's refrigeration efficiency.
For a long time, the problems of insufficient heat exchange and poor refrigerating efficiency of a semiconductor refrigerating device are not solved, and the application of the semiconductor refrigerating technology is directly influenced. The influence of the ratio of the through-flow sectional area between the heat exchange channel and the heat exchange chamber of the refrigeration system with the heat exchange chamber on the heat exchange effect is not taken into consideration all the time.
Disclosure of Invention
The invention aims to solve the problems of low refrigeration efficiency and inaccurate temperature measurement of semiconductor refrigeration equipment in the prior art, and provides a temperature-regulating double-core semiconductor drinking liquid refrigeration system which is large in refrigeration capacity, high in refrigeration efficiency and accurate in temperature measurement, and the temperature of drinking liquid is closer to a set temperature.
The invention also provides refrigeration equipment which is provided with the temperature-regulating type double-core semiconductor drinking liquid refrigeration system and has the advantages.
In order to achieve the above object, the present invention provides a temperature-adjustable dual-core semiconductor drinking liquid refrigeration system, which includes a first semiconductor refrigeration chip, a second semiconductor refrigeration chip, a first hot-end radiator, a second hot-end radiator, a first liquid-cooled heat exchange unit, a second liquid-cooled heat exchange unit, a pumping device, a storage container, a temperature sensor, and a temperature control module; the hot end of the first semiconductor refrigeration chip is contacted with the first hot end radiator, and the cold end of the first semiconductor refrigeration chip is contacted with the first liquid-cooling heat exchange unit; the hot end of the second semiconductor refrigeration chip is contacted with the second hot end radiator, and the cold end of the second semiconductor refrigeration chip is contacted with the liquid cooling heat exchange unit; the first liquid-cooled heat exchange unit and the second liquid-cooled heat exchange unit respectively comprise a heat exchanger inlet and a heat exchange cavity, and the ratio of the cross-sectional area of the heat exchanger inlet to the cross-sectional area of the heat exchange cavity is 1: 10-150; the first liquid-cooling heat exchange unit, the second liquid-cooling heat exchange unit, the storage container and the pumping device are connected into a closed-loop circulating liquid path system; wherein the storage container is provided with a drinking port for a user to take drinking liquid, and the temperature sensor is arranged in the storage container at a position adjacent to the drinking port; the temperature control module is electrically connected with the temperature sensor, the pumping device, the first hot end radiator, the second hot end radiator, the first semiconductor refrigeration chip and the second semiconductor refrigeration chip.
Preferably, the ratio of the cross-sectional flow area of the heat exchanger inlet to the cross-sectional flow area of the heat exchange cavity is 1: 30-50. Through this preferred technical scheme, the homogeneity of the drink liquid that flows through the heat transfer chamber and the heat transfer time of drinking liquid are all good, and the heat transfer effect of drinking liquid is better, and the temperature of the drink liquid that flows out the heat transfer chamber is lower.
Preferably, the drinking liquid movement track formed by the circulating liquid path system can guide the thermal convection movement of the drinking liquid and can form local turbulence in a local area of the movement track. In this preferred technical scheme, the heat convection motion of drinking liquid and the local turbulent flow at heat transfer position help drinking between liquid and the liquid cooling heat transfer unit and drink the inside heat exchange of liquid, can improve the heat transfer effect of drinking liquid to improve liquid cooling heat transfer unit's refrigeration efficiency.
Preferably, the first liquid-cooled heat exchange unit and the second liquid-cooled heat exchange unit both comprise a heat exchange plate and a shell; one side of the heat exchange plate is provided with a chip contact area used for contacting with a semiconductor refrigeration chip, and the other side of the heat exchange plate is provided with a turbulence fin used for forming the local turbulence; the shell comprises a heat exchanger inlet, a heat exchanger outlet and the heat exchange cavity which are communicated with each other; the heat exchange fins are fixed with the shell in a sealing mode, and the turbulence fins are located in the heat exchange cavity. In the preferred technical scheme, the structure that the turbulence fins of the heat exchange fins are sealed in the heat exchange cavity enables the turbulence fins to be completely soaked in the circulating liquid, and the drinking liquid flows in the gaps of the turbulence fins and exchanges heat with the turbulence fins. The flowing drinking liquid is blocked by the turbulence fins to form local turbulence, and strong scouring action is generated between the local turbulence and the turbulence fins, so that the heat exchange between the turbulence fins and the drinking liquid is further accelerated.
Preferably, an inlet baffle for forming the local turbulence is arranged in the heat exchange cavity and close to the inlet of the heat exchanger. This preferred technical scheme's technical advantage lies in, the setting up of import baffle can block the liquid formation of drinking that gets into from the heat transfer import for it is more even to drink the flow of liquid in the heat transfer intracavity, and it is big to avoid appearing middle flow, and the phenomenon that edge flow is little has increased the heat transfer effect. Meanwhile, the drinking liquid is quickly turned under the blocking of the inlet baffle plate, so that local turbulence is formed, and the heat exchange in the heat exchange cavity is facilitated.
Preferably, the storage container is provided at an upper portion thereof with a storage container inlet for feeding the drinking liquid from the circulation fluid path system, and at a lower portion thereof with a storage container outlet for pumping the drinking liquid to the circulation fluid path system. Through the preferred technical scheme, the cooled drinking liquid enters from the upper part of the storage container, the drinking liquid in the original storage container is pumped out from the lower part of the storage container, the forced circulation of the drinking liquid against natural convection is formed in the storage container, meanwhile, the drinking liquid entering from the upper part of the storage container impacts the original drinking liquid in the storage container, local turbulence is formed, the circulation and the heat exchange of the drinking liquid in the storage container are more facilitated, and the temperature of the drinking liquid is more uniform.
Preferably, the temperature control module comprises an operation interface, a control unit, a first refrigeration power supply unit and a second refrigeration power supply unit; the operation interface can display the temperature detected by the temperature sensor and can input a set temperature; the control unit receives information detected by the operation interface and the temperature sensor and controls the operation of the operation interface, the hot-end radiator, the pumping device, the first refrigeration power supply unit and the second refrigeration power supply unit, and the first refrigeration power supply unit and the second refrigeration power supply unit can generate working power supplies of the first semiconductor refrigeration chip and the second semiconductor refrigeration chip. In the preferred technical scheme, the target refrigeration temperature of the drinking liquid can be conveniently set and displayed through the operation interface, and the current temperature of the drinking liquid can be displayed, so that the temperature of the drinking liquid is controlled to be the required temperature under the control of the control unit. The work of first semiconductor refrigeration chip and second semiconductor refrigeration chip can be controlled respectively through first refrigeration power supply unit and second refrigeration power supply unit, not only can carry out the independent control to the operating condition of two semiconductor chips, richens the working method of system, can alleviate the big electric current demand pressure when using a power to supply power for two semiconductor refrigeration chips moreover.
Further preferably, the control unit can control the first refrigeration power supply unit to cut off power supply to the first semiconductor refrigeration chip and the second refrigeration power supply unit to cut on power supply to the second semiconductor refrigeration chip when the temperature of the drinking liquid reaches the set temperature; when the temperature of the drinking liquid is lower than the set temperature value, controlling the first refrigeration power supply unit and the second refrigeration power supply unit to simultaneously cut off the power supply to the first semiconductor refrigeration chip and the second semiconductor refrigeration chip; and when the temperature of the drinking liquid is higher than the set temperature set value, controlling the first refrigeration power supply unit and the second refrigeration power supply unit to simultaneously switch on the power supply of the first semiconductor refrigeration chip and the second semiconductor refrigeration chip. In this further preferred solution, this enables a quick correction to be made when the temperature of the drinking liquid deviates more from the set temperature, while being better maintained around the set value.
Further, the control unit can synchronously turn off or turn on the power supply to the first hot-end radiator when the power supply of the first semiconductor refrigeration chip is turned off or turned on, and synchronously turn off or turn on the power supply to the second hot-end radiator when the power supply of the second semiconductor refrigeration chip is turned off or turned on; and simultaneously cutting off the power supply to the pumping device when the power supply to the first semiconductor refrigeration chip and the second semiconductor refrigeration chip is simultaneously cut off. In the further preferred technical scheme, when the first semiconductor refrigeration chip and the second semiconductor refrigeration chip stop working, the hot ends of the first semiconductor refrigeration chip and the second semiconductor refrigeration chip do not generate heat any more, and the power supply of the first hot end radiator and the second hot end radiator at the hot ends of the first semiconductor refrigeration chip and the second semiconductor refrigeration chip is cut off, so that energy can be saved. Similarly, when the first semiconductor refrigeration chip and the second semiconductor refrigeration chip stop working, heat exchange is not needed in the circulating liquid path system, and the energy consumption can be saved by cutting off the power supply of the pumping device.
In a second aspect, the invention provides a refrigeration appliance having any of the temperature regulated dual core semiconductor potable liquid refrigeration systems of the invention.
Through the technical scheme, the temperature-regulating double-core semiconductor drinking liquid refrigerating system provided by the invention has the advantages that the two semiconductor refrigerating chips are adopted for refrigerating, so that the cooling speed of the drinking liquid is high, and the refrigerating capacity is large. The closed-loop circulating liquid path system can promote the circulation of the drinking liquid between the liquid cooling heat exchange unit and the storage container, increase the heat exchange between the liquid cooling heat exchange unit and the drinking liquid in the storage container, and enable the temperature of the drinking liquid in the storage container to be more uniform. The reasonable arrangement of the ratio of the cross-sectional area of the heat exchanger inlet of the liquid cooling heat exchange unit to the cross-sectional area of the heat exchange cavity enables the cold end heat exchange efficiency of the semiconductor refrigeration chip to be higher, and the refrigeration efficiency of the semiconductor refrigeration chip is effectively improved. The temperature sensor and the temperature control module are arranged to adjust the temperature of the drinking liquid, the uniformity of the temperature of the drinking liquid is better, the temperature is more accurately detected and controlled, and the temperature control module can be widely applied to drinking equipment such as water dispensers, cold drinks machines and juice makers. The refrigerating equipment has the advantages of large refrigerating flow, high refrigerating efficiency and accurate temperature control.
Drawings
FIG. 1 is a schematic diagram of a quasi-thermostatted twin-core semiconductor potable liquid refrigeration system in accordance with an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of one embodiment of a liquid-cooled heat exchange unit.
Description of the reference numerals
1a first semiconductor refrigeration chip 1b first semiconductor refrigeration chip
2a first hot side radiator 2b a second hot side radiator
3a first liquid-cooled heat exchange unit 3b second liquid-cooled heat exchange unit
31 heat exchanging fin 311 chip contact area
312 spoiler fin 32 casing
321 heat exchanger inlet 322 heat exchanger outlet
323 heat exchange cavity 324 inlet baffle
4 pumping device 5 storage container
51 storage vessel inlet 52 storage vessel outlet
Temperature sensor for 53 water supply mouth 6
7 temperature control module 71 interface
72 control unit 73a first cooling power supply unit
73b second cooling power supply unit
Detailed Description
In the present invention, unless otherwise specified, the terms of orientation or positional relationship as indicated by "upper and lower" used herein are the ones in which the described device or component is actually used.
Furthermore, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, and therefore the features defined "first", "second" may explicitly or implicitly include one or more of the features described.
In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, and it is to be understood that the detailed description is provided for purposes of illustration and explanation and is not intended to limit the scope of the invention.
As shown in fig. 1, the temperature-regulating dual-core semiconductor drinking liquid refrigeration system according to the embodiment of the present invention includes a first semiconductor refrigeration chip 1a, a second semiconductor refrigeration chip 1b, a first hot-end heat sink 2a, a second hot-end heat sink 2b, a first liquid-cooled heat exchange unit 3a, a second liquid-cooled heat exchange unit 3b, a pumping device 4, a storage container 5, a temperature sensor 6, and a temperature control module 7; the hot end of the first semiconductor refrigeration chip 1a is in close contact with the first hot end radiator 2a, so that heat generated by the hot end of the first semiconductor refrigeration chip 1a is smoothly transferred to the first hot end radiator 2a, and heat-conducting silicone grease can be coated on the contact surface of the first semiconductor refrigeration chip and the first hot end radiator to reduce the thermal resistance between the first semiconductor refrigeration chip and the first hot end radiator and increase the heat-conducting performance. The cold end of the first semiconductor refrigeration chip 1a is in close contact with the first liquid cooling heat exchange unit 3a, and a contact surface between the cold end and the first liquid cooling heat exchange unit can be coated with heat conduction silicone grease, so that the thermal resistance between the cold end and the first liquid cooling heat exchange unit is reduced, and the heat exchange performance between the cold end and the first liquid cooling heat exchange unit is improved. The hot end of the second semiconductor refrigeration chip 1b is in close contact with the second hot end radiator 2b so as to smoothly transfer the heat generated by the hot end of the second semiconductor refrigeration chip 1b to the second hot end radiator 2b, and the contact surface of the two can be coated with heat-conducting silicone grease so as to reduce the thermal resistance between the two and increase the heat-conducting performance. The cold end of the second semiconductor refrigeration chip 1b is in close contact with the second liquid-cooled heat exchange unit 3b, and the contact surface between the two is also coated with heat-conducting silicone grease so as to reduce the thermal resistance between the two and increase the heat exchange performance between the two. The enhancement of the heat exchange performance of the cold end and the hot end of the semiconductor refrigeration chip not only enables the cold energy generated by the semiconductor refrigeration chip to be better transferred to the drinking liquid and enhances the refrigeration effect, but also improves the refrigeration efficiency of the semiconductor refrigeration chip because the temperature difference between the cold end and the hot end of the semiconductor refrigeration chip is reduced.
The first liquid-cooling heat exchange unit 3a and the second liquid-cooling heat exchange unit 3a respectively comprise a heat exchanger inlet 321 and a heat exchange cavity 323, and the ratio of the cross-sectional area of the heat exchanger inlet 321 to the cross-sectional area of the heat exchange cavity 323 is 1: 10-150. When the ratio of the cross-sectional flow area of the heat exchanger inlet 321 to the cross-sectional flow area of the heat exchange cavity 323 is too large, the cross-sectional area of the heat exchange cavity 323 is too small, and the speed of the drinking liquid passing through the heat exchange cavity 323 is too high, so that the retention time of the drinking liquid in the heat exchange cavity 323 is too short, the heat exchange is insufficient, and the heat exchange efficiency of the drinking liquid is reduced. When the ratio of the cross-sectional flow area of the heat exchanger inlet 321 to the cross-sectional flow area of the heat exchange cavity 323 is too small, the liquid flow in the heat exchange cavity 323 is not uniform, so that the low-temperature drinking liquid which is subjected to the sufficient heat exchange in the heat exchange cavity 323 is difficult to effectively flow back to the storage container 5, and the heat exchange efficiency of the liquid-cooled heat exchange unit 3 is also low. Through a large number of experiments and calculations, the inventor obtains a preferable range of 1:10-150 of the ratio of the cross-sectional flow areas of the heat exchanger inlet 321 and the heat exchange cavity 323. The first liquid cooling heat exchange unit 3a, the second liquid cooling heat exchange unit 3b, the storage container 5 and the pumping device 4 are connected in a liquid way to form a closed-loop circulating liquid way system. The drinking liquid circulates in the liquid path circulating system, so that the cold energy obtained by the first liquid-cooled heat exchange unit 3a and/or the second liquid-cooled heat exchange unit 3b from the cold end of the semiconductor refrigeration chip can be better transmitted to the storage container 5, the flow of the drinking liquid in the storage container 5 can be promoted, and the temperature of the drinking liquid in the storage container 5 is more uniform.
The pumping means 4 may use a centrifugal pump, a rotary pump or a vortex pump for driving the circulating flow of the drinking liquid in the circulating liquid path system. The storage container 5 is provided with a drink supply port 53, and a user can take drink liquid from the drink supply port 53. The temperature sensor 6 may be selected from an NTC sensor, an RTD sensor, or a thermocouple, and is disposed in the storage container 5 in the vicinity of the spout 53 so that the temperature of the drinking liquid taken by the user is closer to the temperature detected by the temperature sensor 6. The temperature control module 7 is electrically connected with the temperature sensor 6, the pumping device 4, the first hot end radiator 2a, the second hot end radiator 2b, the first semiconductor refrigeration chip 1a and the second semiconductor refrigeration chip 1b to obtain temperature information detected by the temperature sensor 6 and control the pumping device 4, the first hot end radiator 2a, the second hot end radiator 2b, the first semiconductor refrigeration chip 1a and the second semiconductor refrigeration chip 1b to work.
In some embodiments of the present invention, the ratio of the cross-sectional flow area of the heat exchanger inlet 321 to the heat exchange cavity 323 is more preferably 1: 30-50. The inventor finds in experiments that the heat exchange efficiency of the liquid-cooled heat exchange unit is higher than that of the liquid-cooled heat exchange unit with the through-flow cross-sectional area of the heat exchanger inlet 321 and the heat exchange cavity 323 being 1:30-50, and the temperature of the drinking liquid flowing back from the liquid-cooled heat exchange unit is lower.
In some embodiments of the invention, the drinking liquid trajectory created by the recirculating liquid system can direct the thermally convective motion of the drinking liquid, and the drinking liquid can create localized turbulence in localized regions of the trajectory.
As a preferred embodiment of precisely controlling the movement track of the drinking liquid, the circulation path system of the present invention forms a movement track of the drinking liquid capable of guiding the thermal convection movement of the drinking liquid and forming at least one local turbulence in a local area of the movement track. The heat convection movement is beneficial to the heat exchange of the drinking liquid, the formation of local turbulence accelerates the flowing of the drinking liquid, increases the contact between the drinking liquid and the heat exchanger, and effectively improves the heat exchange effect.
In some embodiments of the present invention, as shown in fig. 2, the first liquid-cooled heat exchange unit 3a and the second liquid-cooled heat exchange unit 3b each include a heat exchanger fin 31 and a housing 32; one side of the heat exchange plate 31 is provided with a chip contact area 311, the surface of the chip contact area 311 is made smooth, so that the heat exchange can be better and tightly contacted with the cold end of the semiconductor refrigeration chip, and the heat exchange is increased; the other side of the heat exchange plate 31 is provided with the turbulence fins 312, the turbulence fins 312 can block flowing drinking liquid in liquid flow, local turbulence is formed in the drinking liquid, the contact between the drinking liquid and the turbulence fins 312 is increased, and the heat exchange between the drinking liquid and the turbulence fins 312 is facilitated; the shell 32 comprises a heat exchanger inlet 321, a heat exchanger outlet 322 and a heat exchange cavity 323 which are communicated with each other; a heat exchanger inlet 321 and a heat exchanger outlet 322 are provided at both ends of the heat exchange chamber 323, respectively. The heat exchange fins 31 and the shell 32 are sealed and fixed together to form a closed heat exchange space, the flow disturbing fins 312 are located in the heat exchange cavity 323 and occupy most of the heat exchange space, when drinking liquid flows in the heat exchange cavity 323, the flow disturbing fins 312 are completely soaked in the drinking liquid, the drinking liquid flows through gaps among the flow disturbing fins 312 and forms local turbulence, contact between the drinking liquid and the flow disturbing fins 312 is increased, heat exchange of the liquid cooling heat exchange unit is facilitated, and the refrigerating efficiency of the semiconductor refrigerating chip 1 is also improved.
In some embodiments of the present invention, as shown in fig. 2, an inlet baffle 324 is disposed in the heat exchange chamber 323 near the heat exchanger inlet 321, and after the drinking liquid enters from the heat exchanger inlet 321, the drinking liquid is blocked by the inlet baffle 324, so that the phenomenon that the liquid flow directly enters the heat exchange chamber 323 to form a large intermediate flow and a small peripheral flow is avoided. Under the blocking action of the inlet baffle 324, the drinking liquid is rapidly diverted at the inlet baffle 324 to form local turbulence; the drinking liquid turns over the inlet baffle 324 and enters the heat exchange cavity 323 from the top of the inlet baffle 324, so that the liquid flow entering the heat exchange cavity 323 is more uniform, and the drinking liquid and all parts of the turbulence fins 312 soaked in the heat exchange cavity 323 carry out sufficient heat exchange, and the heat exchange effect is further improved.
In some embodiments of the present invention, the upper portion of the storage container 5 is provided with a storage container inlet 51, the drinking liquid enters the storage container 5 from the circulation liquid path through the storage container inlet 51, the drinking liquid rushes into the liquid surface of the drinking liquid in the storage container 5 from the upper portion, turbulence is formed locally, and circulation and heat exchange of the drinking liquid inside the storage container 5 are promoted; the lower part of the storage container 5 is provided with a storage container outlet 52, drinking liquid is pumped into the circulating liquid path from the storage container outlet 52, the refrigerated drinking liquid enters from the upper part of the storage container 5, the drinking liquid in the original storage container 5 is pumped out from the lower part of the storage container 5, and the drinking liquid forced circulation of inverse natural convection is formed inside the storage container 5, which is also beneficial to the circulation and heat exchange of the drinking liquid in the storage container 5, so that the temperature of the drinking liquid is more uniform, and the accurate temperature measurement and control are convenient.
In some embodiments of the present invention, the temperature control module 7 includes an operation interface 71, a control unit 72, a first cooling power supply unit 73a, and a second cooling power supply unit 73 b. The operating interface 71 can display the temperature of the drinking liquid in the storage container 5 and can be used to input a set temperature and some usual system control information to perform manual intervention on the operation of the system; the control unit 72 receives the information input by the operation interface 71 and the information detected by the temperature sensor 6, and controls the display on the operation interface 71, the first hot side radiator 2a, the second hot side radiator 2b, the pumping device 4, the first cooling power supply unit 73a, and the second cooling power supply unit 73b according to the information. The first and second cooling power supply units 73a and 73b can generate operating power for the first and second semiconductor cooling chips 1a and 1 b.
In some embodiments of the present invention, the control unit 72 can control the first refrigeration power supply unit 73a to turn off the power supply to the first semiconductor refrigeration chip 1a and the second refrigeration power supply unit 73b to turn on the power supply to the second semiconductor refrigeration chip 1b when the temperature of the drinking liquid reaches the set temperature; when the temperature of the drinking liquid is lower than the set temperature value (2 ℃ in the embodiment), controlling the first refrigeration power supply unit 73a and the second refrigeration power supply unit 73b to simultaneously cut off the power supply to the first semiconductor refrigeration chip 1a and the second semiconductor refrigeration chip 1 b; and when the temperature of the drinking liquid is higher than the set temperature by 2 ℃, controlling the first refrigeration power supply unit 73a and the second refrigeration power supply unit 73b to simultaneously switch on the power supply of the first semiconductor refrigeration chip 1a and the second semiconductor refrigeration chip 1 b. The specific working process is as follows: when the refrigerating system starts to work, the first semiconductor refrigerating chip 1a and the second semiconductor refrigerating chip 1b work simultaneously, the temperature of the drinking liquid is reduced rapidly, when the temperature of the drinking liquid is reduced to a set temperature, the first semiconductor refrigerating chip 1a stops working, only the second semiconductor refrigerating chip 1b works for refrigerating, at the moment, if no adding of the drinking liquid occurs, the temperature of the drinking liquid is reduced slowly, when the temperature is lower than the set temperature by 2 ℃, the first semiconductor refrigerating chip 1a and the second semiconductor refrigerating chip 1b stop working simultaneously, and the temperature of the drinking liquid is increased slowly. When the temperature of the drinking liquid rises to the set temperature, the second semiconductor refrigeration chip 1b starts to operate, and the first semiconductor refrigeration chip 1a continues to stop operating. Returning to the situation when the temperature drops to the set temperature. If the temperature of the drinking liquid rises due to the addition of the drinking liquid, when the temperature of the drinking liquid is higher than the set temperature by 2 ℃, the first semiconductor refrigeration chip 1a and the second semiconductor refrigeration chip 1b work simultaneously, and the temperature of the drinking liquid drops rapidly.
In some embodiments of the present invention, the first hot side heat sink 2a and the second hot side heat sink 2b are both air-cooled heat sinks with heat dissipation fans, and the heat dissipation fans are electrically connected to the temperature control module 7. The control unit 72 can synchronously turn off the power supply to the first hot-side radiator 2a when the power supply to the first semiconductor refrigeration chip 1a is turned off, and synchronously turn on the power supply to the first hot-side radiator 2a when the power supply to the first semiconductor refrigeration chip 1a is turned on; the power supply to the second hot-end radiator 2b is synchronously switched off when the power supply to the second semiconductor refrigeration chip 1b is switched off, and the power supply to the second hot-end radiator 2b is synchronously switched on when the power supply to the second semiconductor refrigeration chip 1b is switched on; and simultaneously cuts off the power supply to the pumping device 4 when the power supply to the first semiconductor refrigeration chip 1a and the second semiconductor refrigeration chip 1b is simultaneously cut off. When the first semiconductor refrigeration chip 1a and the second semiconductor refrigeration chip 1b stop working, the hot ends of the first semiconductor refrigeration chip and the second semiconductor refrigeration chip do not generate heat any more, the power supply of the first hot end radiator 2a and the second hot end radiator 2b of the hot ends of the first semiconductor refrigeration chip and the second semiconductor refrigeration chip is cut off, the work of a refrigeration system cannot be influenced, and the energy consumption of the refrigeration system can be reduced. Similarly, when the first semiconductor refrigeration chip 1a and the second semiconductor refrigeration chip 1b stop working, heat exchange is no longer needed in the circulating fluid path system, and the energy consumption of the refrigeration system can be saved by cutting off the power supply of the pumping device 4. In other embodiments, the first hot side heat sink 2a and the second hot side heat sink 2b adopt a water-cooled heat sink with a circulating water pump or a heat dissipation fan at the same time, or adopt a heat pipe heat sink with a heat dissipation fan, or adopt any two of the air-cooled heat sink, the water-cooled heat sink and the heat pipe heat sink in a mixed manner.
The refrigeration equipment provided by the invention adopts the temperature-regulating double-core semiconductor drinking liquid refrigeration system of any embodiment of the invention.
In summary, the temperature-regulating dual-core semiconductor drinking liquid refrigeration system of the present invention is provided with the temperature sensor and the temperature control module, and can set the refrigeration temperature of the drinking liquid and control the temperature of the drinking liquid near the set temperature, so that a user can conveniently obtain the drinking liquid suitable for the taste temperature of the user. The optimized through-flow sectional area ratio of the heat exchanger inlet of the liquid cooling heat exchange unit to the heat exchange cavity effectively improves the heat exchange efficiency of the liquid cooling heat exchange unit, so that the refrigeration efficiency of the semiconductor refrigeration chip is also improved. The drinking liquid in the circulating liquid path system is forced to flow under the driving of the pumping device, so that the heat transfer and heat exchange effects of the drinking liquid are better, the refrigeration efficiency of the system is improved, the temperature of the drinking liquid in the storage container is more uniform, and the temperature measurement and control of the system are more accurate. The use of the double-semiconductor refrigeration chip enables the refrigeration capacity of the refrigeration system to be larger and the refrigeration speed to be faster. The temperature sensor is arranged in the region of the drinking port in the storage container, so that the drinking temperature is closer to the detection temperature, and the temperature of the drinking liquid displayed by the system is more consistent with the drinking taste.
In a preferred mode of the invention, the circulating liquid path of the circulating liquid path system effectively controls the movement track of the drinking liquid, conforms to and strengthens the convection movement of the drinking liquid, strengthens at least one local turbulent flow artificially formed on the movement track of the drinking liquid, enhances the cold energy diffusion and the drinking liquid mixing, and improves the refrigeration efficiency. The fall of the drinking liquid generated by the storage container inlet at the upper part of the storage container and the storage container outlet at the lower part of the storage container and the circulation generated by the flowing of the drinking liquid in the storage container strengthen the mixing and heat exchange of the drinking liquid in the storage container, so that the temperature of the drinking liquid is more uniform, the temperature detected by the temperature sensor is more accurate, and the system is convenient to control the temperature of the drinking liquid. The arrangement of the inlet baffle and the turbulence fins in the liquid cooling heat exchange unit improves the heat exchange performance of the liquid cooling heat exchange unit, so that the refrigeration effect of the system is better and the efficiency is higher. The optimized control method of the double-semiconductor refrigeration chip enables the drinking liquid to be fast in cooling speed, high in temperature stability and low in energy consumption of the system.
The refrigerating equipment has the advantages of large refrigerating capacity, small volume, accurate temperature measurement and control and relatively low cost, can reduce the temperature of drinking liquid to below 10 ℃ in an environment of 35 ℃, provides 2 liters/hour of flow, and achieves the refrigerating capacity of a small compressor. Can be widely applied to drinking equipment such as drinking machines, cold drink machines, fruit juice machines and the like.
Reference throughout this specification to "some embodiments" or "some embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. In this specification, the schematic representations thereof do not necessarily have to be directed to the same embodiment.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the specific features in any suitable way, and the invention will not be further described in relation to the various possible combinations in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (10)
1. A temperature-regulating double-core semiconductor drinking liquid refrigerating system is characterized by comprising a first semiconductor refrigerating chip (1a), a second semiconductor refrigerating chip (1b), a first hot end radiator (2a), a second hot end radiator (2b), a first liquid cooling heat exchange unit (3a), a second liquid cooling heat exchange unit (3b), a pumping device (4), a storage container (5), a temperature sensor (6) and a temperature control module (7);
the hot end of the first semiconductor refrigeration chip (1a) is contacted with the first hot end radiator (2a), and the cold end of the first semiconductor refrigeration chip is contacted with the first liquid-cooling heat exchange unit (3 a); the hot end of the second semiconductor refrigeration chip (1b) is contacted with the second hot end radiator (2b), and the cold end is contacted with the liquid cooling heat exchange unit (3 b); the first liquid-cooling heat exchange unit (3a) and the second liquid-cooling heat exchange unit (3b) respectively comprise a heat exchanger inlet (321) and a heat exchange cavity (323), and the ratio of the cross-sectional areas of the heat exchanger inlet (321) to the heat exchange cavity (323) is 1: 10-150; the first liquid-cooling heat exchange unit (3a), the second liquid-cooling heat exchange unit (3b), the storage container (5) and the pumping device (4) are connected into a closed-loop circulating liquid path system through liquid paths; wherein the storage container (5) is provided with a drinking spout (53) for a user to take drinking liquid, and the temperature sensor (6) is arranged in the storage container (5) at a position adjacent to the drinking spout (53); the temperature control module (7) is electrically connected with the temperature sensor (6), the pumping device (4), the first hot end radiator (2a), the second hot end radiator (2b), the first semiconductor refrigeration chip (1a) and the second semiconductor refrigeration chip (1 b).
2. The temperature-regulating twin-core semiconductor drinking-liquid refrigeration system according to claim 1, wherein the ratio of the cross-sectional flow area of the heat exchanger inlet (321) to the heat exchange cavity (323) is 1: 30-50.
3. The temperature regulated dual core semiconductor potable liquid refrigeration system according to claim 1, wherein the circulating fluid path system defines a potable liquid motion profile capable of guiding a thermally convective movement of the potable liquid and of creating localized turbulence in localized regions of the motion profile.
4. The temperature-regulated dual-core semiconductor drinking-liquid refrigeration system according to claim 3, wherein the first liquid-cooled heat exchange unit (3a) and the second liquid-cooled heat exchange unit (3b) each comprise a heat exchanger plate (31) and a housing (32); one side of the heat exchange plate (31) is provided with a chip contact area (311) used for contacting with a semiconductor refrigeration chip, and the other side of the heat exchange plate is provided with a turbulence fin (312) used for forming the local turbulence; the shell (32) comprises the heat exchanger inlet (321), the heat exchanger outlet (322) and the heat exchange cavity (323) which are communicated with each other; the heat exchange plate (31) and the shell (32) are fixed in a sealing mode, and the turbulence fins (312) are located in the heat exchange cavity (323).
5. The temperature regulated dual core semiconductor drinking liquid refrigeration system according to claim 4, wherein an inlet baffle (324) is provided in the heat exchange chamber (323) adjacent the heat exchanger inlet (321) for creating the localized turbulence.
6. A temperature-regulated dual-core semiconductor potable liquid refrigeration system according to claim 3, characterized in that the storage container (5) is provided at an upper portion with a storage container inlet (51) for inputting potable liquid from the circulating liquid path system and at a lower portion with a storage container outlet (52) for pumping potable liquid to the circulating liquid path system.
7. A temperature regulated dual core semiconductor drinking liquid refrigeration system according to any one of claims 1 to 6, wherein the temperature control module (7) comprises an operator interface (71), a control unit (72), a first refrigeration power supply unit (73a) and a second refrigeration power supply unit (73 b); the operation interface (71) can display the temperature detected by the temperature sensor (6) and can input a set temperature; the control unit (72) receives information detected by the operation interface (71) and the temperature sensor (6), and controls the operation interface (71), the hot-end radiator (2), the pumping device (4), the first refrigeration power supply unit (73a) and the second refrigeration power supply unit (73b) to work, and the first refrigeration power supply unit (73a) and the second refrigeration power supply unit (73b) can generate working power supplies of the first semiconductor refrigeration chip (1a) and the second semiconductor refrigeration chip (1 b).
8. The temperature-regulated dual-core semiconductor drinking-liquid refrigerating system according to claim 7, wherein the control unit (72) is capable of controlling the first refrigerating power supply unit (73a) to cut off power supply to the first semiconductor refrigerating chip (1a) and the second refrigerating power supply unit (73b) to cut on power supply to the second semiconductor refrigerating chip (1b) when the drinking-liquid temperature reaches the set temperature; when the temperature of the drinking liquid is lower than the set temperature set value, controlling the first refrigeration power supply unit (73a) and the second refrigeration power supply unit (73b) to simultaneously cut off the power supply to the first semiconductor refrigeration chip (1a) and the second semiconductor refrigeration chip (1 b); and when the temperature of the drinking liquid is higher than the set temperature set value, controlling the first refrigeration power supply unit (73a) and the second refrigeration power supply unit (73b) to simultaneously switch on the power supply of the first semiconductor refrigeration chip (1a) and the second semiconductor refrigeration chip (1 b).
9. The thermostatted twin-core semiconductor potable liquid refrigeration system according to claim 8, characterized in that the control unit (72) is capable of synchronously switching off or on the power supply to the first hot side heat sink (2a) when switching off or on the power supply to the first semiconductor refrigeration chip (1a), and synchronously switching off or on the power supply to the second hot side heat sink (2b) when switching off or on the power supply to the second semiconductor refrigeration chip (1 b); and simultaneously cutting off the power supply to the pumping device (4) when the power supply to the first semiconductor refrigeration chip (1a) and the second semiconductor refrigeration chip (1b) is simultaneously cut off.
10. A refrigeration appliance comprising a thermostatted twin-core semiconductor drinking liquid refrigeration system as claimed in any of claims 1 to 9.
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