CN113375431A - High-voltage electric field heat pump drying system - Google Patents
High-voltage electric field heat pump drying system Download PDFInfo
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- CN113375431A CN113375431A CN202010159292.9A CN202010159292A CN113375431A CN 113375431 A CN113375431 A CN 113375431A CN 202010159292 A CN202010159292 A CN 202010159292A CN 113375431 A CN113375431 A CN 113375431A
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- 238000001035 drying Methods 0.000 title claims abstract description 203
- 230000005684 electric field Effects 0.000 title claims abstract description 68
- 230000007246 mechanism Effects 0.000 claims abstract description 29
- 239000007789 gas Substances 0.000 claims description 23
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 4
- 239000001569 carbon dioxide Substances 0.000 claims description 4
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
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- 239000002994 raw material Substances 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 238000007791 dehumidification Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 239000007788 liquid Substances 0.000 description 9
- 230000008569 process Effects 0.000 description 8
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
- F26B9/066—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers the products to be dried being disposed on one or more containers, which may have at least partly gas-previous walls, e.g. trays or shelves in a stack
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
- F26B21/04—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/08—Humidity
- F26B21/086—Humidity by condensing the moisture in the drying medium, which may be recycled, e.g. using a heat pump cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/04—Heating arrangements using electric heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention relates to the technical field of material drying, and discloses a high-voltage electric field heat pump drying system which comprises a heat pump system, wherein the heat pump system comprises a condenser and an evaporator; the device also comprises a drying chamber and a high-voltage electric field drying mechanism; the drying chamber, the evaporator and the condenser are sequentially connected into a closed loop through a circulating air path, a drying medium is introduced into the circulating air path, and a high-voltage electric field drying mechanism is arranged in the drying chamber; the invention skillfully realizes the coupling of the heat pump drying technology and the high-voltage electric field drying technology, has low cost and good energy-saving effect, can realize high-efficiency and high-quality drying treatment on materials at low temperature, and can better meet the drying requirement on the raw materials containing the heat-instable active components.
Description
Technical Field
The invention relates to the technical field of material drying, in particular to a high-voltage electric field heat pump drying system.
Background
The material drying relates to the drying fields of agricultural production, food processing, medicine manufacturing, chemical production, paper making, wood processing and the like. Through drying treatment, not only can obtain the material that accords with the water content requirement, still can produce the influence to other properties of material. At present, in the aspect of reducing the energy consumption in the material drying process or improving the drying effect, the heat pump drying technology and the high-voltage electric field drying technology are widely used.
The heat pump comprises a closed circulation system formed by connecting a compressor, a condenser, an expansion valve, an evaporator and other components through refrigerant pipelines in sequence, absorbs heat from a natural environment or waste heat resources at the cost of consuming a small amount of high-quality energy (high-temperature heat energy) according to the inverse Carnot cycle principle to obtain more output heat energy, and realizes the conversion of low-grade heat energy into high-grade heat energy, thereby obtaining better energy-saving effect. Compared with conventional drying equipment, the heat pump drying has low cost, but the basic principle of material drying is the same, and the heat pump drying is an isenthalpic heat insulation humidifying and drying process by means of convective heat transfer between hot air and the dried material. However, the main disadvantages of heat pump drying are that at the later stage of drying the material, the dehumidification efficiency is reduced, the drying rate is reduced, and the energy consumption is increased.
The high-voltage electric field drying technology is used as an electrohydrodynamic drying method, under a high-voltage electric field, electric field force generates a traction effect on polar water molecules in materials, energy-carrying ions in the electric field are injected into the materials, energy is transferred to the water molecules, and the breakage of water molecule groups is accelerated, so that the evaporation rate of water is accelerated, and the dehydration or unfreezing efficiency of the materials is improved. From the point of view of electrohydrodynamics, the high-voltage electric field drying technology is mainly based on the action of an electric pump generated by electroosmosis and the action of an electric field and force in dielectric liquid to accelerate the dehydration or the thawing of materials. The temperature of the dried material is not increased in the drying process, so that the dried material is dried at a lower temperature. Meanwhile, the core part of the high-voltage electric field drying is the high-voltage power supply, and the manufacturing cost of the high-voltage electrostatic power supply is low, so that the cost of the drying system is greatly reduced on the whole, and the high-voltage electric field can dry materials and kill microorganisms such as bacteria, mold and the like in the dried materials. In addition, because the electric field force generated under the condition of high voltage and low current is applied during drying, a byproduct is only ozone, and the drying device has the characteristics of energy conservation and environmental protection. However, the high-voltage electric field drying technology has the obvious disadvantage that the drying speed is relatively slow, and for some materials containing volatile components, the volatile components and moisture are gasified together to enter air in the drying process, so that the quality of the air is influenced.
From the above, although the heat pump drying technology has low cost and good energy-saving effect compared with the traditional drying technology, the phenomena of reduced dehumidification efficiency, reduced drying rate and increased energy consumption exist in the later stage of drying materials. Although the high-voltage electric field drying technology realizes the drying of materials at lower temperature and better ensures the biological activity of the materials, the drying speed is relatively slow, and when some materials containing volatile cost are dried, volatile components easily enter air to affect the surrounding environment.
Disclosure of Invention
The embodiment of the invention provides a high-voltage electric field heat pump drying system based on the defects or shortcomings of the existing heat pump drying technology and the existing high-voltage electric field drying technology.
In order to solve the above technical problem, an embodiment of the present invention provides a high-voltage electric field heat pump drying system, including a heat pump system, where the heat pump system includes a condenser and an evaporator; the device also comprises a drying chamber and a high-voltage electric field drying mechanism; the drying chamber, the evaporator and the condenser are sequentially connected into a closed loop through a circulating air path, a drying medium is introduced into the circulating air path, and the high-voltage electric field drying mechanism is arranged in the drying chamber.
Wherein the drying medium comprises any one of air, carbon dioxide gas or nitrogen gas.
And the circulating air path is provided with a fan, and the fan comprises an axial flow fan.
The fan is arranged on a circulating air path between the condenser and the drying chamber and/or between the drying chamber and the evaporator.
The high-voltage electric field drying mechanism comprises a high-voltage polar plate and a grounding polar plate which are oppositely arranged at intervals, the high-voltage polar plate is connected with a high-voltage power supply, and the high-voltage power supply adopts an adjustable direct-current power supply.
The high-voltage polar plate and/or the grounding polar plate are/is respectively arranged on a linear adjusting mechanism, and the linear adjusting mechanism is used for adjusting the distance between the high-voltage polar plate and the grounding polar plate along the electric field direction of the high-voltage electric field.
The high-voltage polar plate and the grounding polar plate comprise a plurality of groups, and the high-voltage polar plate and the grounding polar plate are oppositely arranged in the drying chamber from left to right or from top to bottom.
Wherein, a temperature and humidity detection unit is arranged in the drying chamber; the temperature and humidity detection unit comprises a temperature sensor, a humidity sensor, a control module and a display module, wherein the temperature sensor, the humidity sensor and the display module are respectively in communication connection with the control module.
One or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:
according to the high-voltage electric field heat pump drying system provided by the embodiment of the invention, based on the heat pump system, the drying chamber is sequentially connected with the evaporator and the condenser of the heat pump system through the circulating air path to form a closed loop, so that a drying medium circulating system can be formed.
As for the heat pump system, the heat pump system is a closed cycle system in which a compressor, a condenser, a throttle element, an evaporator and other components are connected by refrigerant lines, as is well known in the art. When the heat pump system starts to operate, gas-liquid two-phase mixed working medium (refrigerant) flowing out of the throttling element enters the evaporator, the mixed working medium absorbs sensible heat in dry medium (humid air) and latent heat of water vapor to be evaporated into low-temperature and low-pressure gaseous working medium, the low-temperature and low-pressure gaseous working medium enters the compressor to be subjected to isentropic compression, the high-temperature and high-pressure gaseous working medium flowing out of the compressor enters the condenser, releases heat to the flowing dry medium to be condensed into liquid working medium, and the liquid working medium is converted into gas-liquid two-phase mixed working medium through isenthalpic adiabatic throttling of the throttling element and works circularly.
Correspondingly, for the drying medium circulating system, after the high-temperature and low-humidity gas (drying medium) enters the drying chamber and is cooperated with the high-voltage electric field drying mechanism to dry the material, the high-temperature and low-humidity gas takes away the moisture in the material, is converted into the high-temperature and high-humidity gas and enters one heat exchange channel of the evaporator so as to transfer the heat to the working medium in the other heat exchange channel of the evaporator, and thus the purpose of recovering the low-grade heat is achieved; because the surface temperature of the evaporator is reduced to be lower than the dew point temperature, the condensation and dehumidification of high-temperature and high-humidity gas are realized, the high-temperature and high-humidity gas is converted into low-temperature and low-humidity gas, and the dehydrated water is discharged from the evaporator in the form of condensed water, so that the dehumidification effect is achieved; then, the low-temperature and low-humidity gas enters one of the heat exchange channels of the condenser, is converted into high-temperature and low-humidity gas after absorbing the condensation heat of the high-temperature and high-pressure working medium flowing in the other heat exchange channel of the condenser, then enters a drying chamber to be cooperated with a high-voltage electric field drying mechanism to dry the material, and circulates according to the high-temperature and low-humidity gas; the drying medium continuously absorbs the moisture in the materials and is condensed and dehumidified by the evaporator in the circulating flowing process, so that the continuous drying operation of the materials is realized.
Therefore, the invention skillfully realizes the coupling of the heat pump drying technology and the high-voltage electric field drying technology, has low cost and good energy-saving effect, and effectively solves the problem of low drying efficiency in the high-voltage electric field drying. Because the high-voltage electric field acts on water molecules in the material through the electric field force and ions in the process of drying the material, the problems of reduced dehumidification efficiency, reduced drying rate and increased energy consumption of the heat pump drying in the later drying stage are solved to a certain extent. Meanwhile, the high-voltage electric field drying mechanism does not transfer heat in the process of drying the material, so that the control of the heat pump drying on the drying temperature is not influenced, better drying quality is ensured, and the drying requirement on the raw material containing the heat-instable active component can be better met; in addition, in the process of drying the materials, the drying medium circularly flows in the completely closed circulating channel, so that fresh air is not required to be introduced from the environment, waste gas is not required to be discharged into the environment, the environment is clean and environment-friendly, no waste gas is discharged to pollute the environment, the drying temperature of the materials is not limited by the environment temperature, and different drying media can be flexibly selected to implement continuous drying operation on different materials.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a high-voltage electric field heat pump drying system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of the arrangement structure of the high-voltage electric field in the drying chamber according to the embodiment of the present invention.
In the figure: 1. a compressor; 2. a condenser; 3. a throttling element; 4. an evaporator; 5. a refrigerant line; 6. a circulation air path; 7. a fan; 8. a drying chamber; 9. a high-voltage electric field drying mechanism; 91. a high voltage pole plate; 92. a ground plate; 93. a direct current high voltage generator.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, the present embodiment provides a high-voltage electric field heat pump drying system, which includes a compressor 1, a condenser 2, a throttling element 3, and an evaporator 4, which are sequentially connected to form a closed loop through a refrigerant pipeline 5; the device also comprises a drying chamber 8 and a high-voltage electric field drying mechanism 9; the drying chamber 8, the evaporator 4 and the condenser 2 are sequentially connected into a closed loop through the circulating air path 6, a drying medium is introduced into the circulating air path 6, and the high-voltage electric field drying mechanism 9 is arranged in the drying chamber 8.
Specifically, as shown in fig. 1, the high-voltage electric field heat pump drying system according to the present embodiment can constitute a heat pump system known in the art based on a compressor 1, a condenser 2, a throttling element 3, and an evaporator 4, wherein the throttling element 3 is an expansion valve, and a drying chamber 8, the evaporator 4, and the condenser 2 are connected in sequence through a circulation air passage 6 to form a closed loop, thereby constituting a drying medium circulation system.
For a heat pump system, during starting operation, a gas-liquid two-phase mixed working medium (refrigerant) flowing out of a throttling element 3 enters an evaporator 4, absorbs sensible heat in a drying medium (humid air) and latent heat of water vapor to evaporate into a low-temperature and low-pressure gaseous working medium, the low-temperature and low-pressure gaseous working medium enters a compressor 1 to be subjected to isentropic compression, a high-temperature and high-pressure gaseous working medium flowing out of the compressor 1 enters a condenser 2 and releases heat to the flowing drying medium to be condensed into a liquid working medium, and the liquid working medium is converted into the gas-liquid two-phase mixed working medium through isenthalpic adiabatic throttling of the throttling element 3 and circularly works.
Correspondingly, for the drying medium circulating system, after the high-temperature and low-humidity gas (drying medium) enters the drying chamber 8 and is cooperated with the high-voltage electric field drying mechanism 9 to dry the material, the high-temperature and low-humidity gas takes away the moisture in the material, is converted into the high-temperature and high-humidity gas, enters one of the heat exchange channels of the evaporator 4, and transfers the heat to the working medium in the other heat exchange channel of the evaporator 4, so that the purpose of recovering the low-grade heat is achieved; because the surface temperature of the evaporator 4 is reduced to be lower than the dew point temperature, the condensation and dehumidification of high-temperature and high-humidity gas are realized, the high-temperature and high-humidity gas is converted into low-temperature and low-humidity gas, and the dehydrated moisture is discharged from the evaporator 4 in the form of condensed water, so that the dehumidification effect is achieved; then, the low-temperature and low-humidity gas enters one of the heat exchange channels of the condenser 2, is converted into high-temperature and low-humidity gas after absorbing the condensation heat of the high-temperature and high-pressure working medium flowing in the other heat exchange channel of the condenser 2, then enters the drying chamber 8 to be matched with the high-voltage electric field drying mechanism 9 to dry the material, and circulates according to the high-temperature and low-humidity gas; in the process of circulating flow, the drying medium continuously absorbs moisture in the materials and is condensed and dehumidified by the evaporator 4, so that continuous drying operation of the materials is realized.
Therefore, the invention skillfully realizes the coupling of the heat pump drying technology and the high-voltage electric field drying technology, has low cost and good energy-saving effect, can realize high-efficiency and high-quality drying treatment on materials in a low-temperature state, and effectively solves the problem of low drying efficiency in high-voltage electric field drying. Because the high-voltage electric field drying mechanism 9 acts on water molecules in the material through electric field force and ions in the process of drying the material, the problems of reduced dehumidification efficiency, reduced drying rate and increased energy consumption of the heat pump drying in the later drying stage are solved to a certain extent. Meanwhile, as the high-voltage electric field drying mechanism 9 does not transfer heat in the process of drying the material, the control of the heat pump drying on the drying temperature is not influenced, better drying quality is ensured, and the drying requirement on the raw material containing the heat-instable active component can be better met; in addition, in the process of drying the materials, the drying medium circularly flows in the completely closed circulating channel, so that fresh air is not required to be introduced from the environment, waste gas is not required to be discharged into the environment, the environment is clean and environment-friendly, no waste gas is discharged to pollute the environment, the drying temperature of the materials is not limited by the environment temperature, and different drying media can be flexibly selected to implement continuous drying operation on different materials.
Preferably, the drying medium in this embodiment comprises any one of air, carbon dioxide gas or nitrogen gas.
Specifically, when the chemical characteristics of the material are relatively stable and no specific requirements are made on the oxidation reaction in the drying process, conventional air can be selected as a drying medium; for materials suitable for low oxygen drying, such as: chinese medicinal materials, fruit, gunpowder, etc., and the drying medium can be carbon dioxide gas or nitrogen gas.
Preferably, in the present embodiment, a fan 7 is mounted on the circulation air duct 6, and the fan 7 includes an axial flow fan.
Specifically, the fan 7 is configured to provide a driving force for a directional flow of the drying medium in the circulation air duct 6, where a direction of the drying medium circulating in the circulation air duct 6 is: the drying medium is discharged from the condenser 2, passes through the drying chamber 8 and the evaporator 4 in this order, and then returns to the condenser 2, and is circulated. From this, because fan 7 has accelerated the efficiency that material and circulation flow's drying medium contacted in the drying chamber 8 greatly to the directional drive effect of drying medium, because the material still carries out high-voltage electric field drying process under the effect of high-voltage electric field drying mechanism 9 to promote the effect that heat pump drying technique and high-voltage electric field drying technique carry out drying in coordination to the material greatly, strengthened the dehumidification efficiency to the material.
At the same time, the axial flow fan has high air blowing efficiency and is more suitable for being installed in the circulation air duct 6 than the centrifugal fan, and the fan 7 is preferably an axial flow fan.
Further, in the present embodiment, the fan 7 includes a plurality of fans, and the fans 7 are installed on the circulation air duct 6 between the condenser 2 and the drying chamber 8 and/or between the drying chamber 8 and the evaporator 4.
Specifically, the air supply directions of the fans 7 in the embodiment are the same, and the fans 7 are installed on the circulation air path 6, so that the drying medium can be accelerated to circularly flow in the circulation air path 6 along the specific direction shown in the above embodiment, and the effect of continuously drying the material by the drying medium is greatly improved.
Meanwhile, the fan 7 is arranged on the circulating air path 6 between the condenser 2 and the drying chamber 8, so that high-temperature and low-humidity gas (drying medium) output after heat exchange treatment of the condenser 2 is favorably conveyed into the drying chamber 8, and is cooperated with the high-voltage electric field drying mechanism 9 to dry the material; accordingly, the fan 7 is installed on the circulation air path 6 between the drying chamber 8 and the evaporator 4, which is beneficial to extracting high-temperature and high-humidity air after drying the material from the drying chamber 8, on one hand, the replacement efficiency of the air in the drying chamber 8 is accelerated, and the moisture dried and evaporated from the material is taken away, on the other hand, the moisture taken away is separated out in the form of condensed water by the evaporator 4, so that the dehumidification efficiency of the material is enhanced.
Preferably, as shown in fig. 2, the high-voltage electric field drying mechanism 9 in this embodiment includes a high-voltage pole plate 91 and a ground pole plate 92 which are oppositely disposed at an interval, the high-voltage pole plate 91 is connected to a high-voltage power supply, and the high-voltage power supply adopts an adjustable dc power supply.
Specifically, the high-voltage pole plate 91 and the ground pole plate 92 can both be copper plates with good conductivity, the high-voltage power supply comprises a direct-current high-voltage generator 93 known in the art, the high-voltage pole plate 91 is connected with a mains supply through the direct-current high-voltage generator 93, and the ground pole plate 92 is subjected to ground treatment, so that direct-current high voltage can be transmitted to the high-voltage pole plate 91 through the direct-current high-voltage generator 93, a directional direct-current high-voltage electric field is generated between the high-voltage pole plate 91 and the ground pole plate 92, and high-voltage drying treatment is performed on materials correspondingly placed between the high-voltage pole plate 91 and the ground pole plate 92, wherein the direct-current high-voltage generator 93 can realize continuous adjustment of voltage between the high-voltage pole plate 91 and the ground pole plate 92.
Preferably, in this embodiment, the high-voltage pole plate 91 and the ground pole plate 92 are respectively mounted on a linear adjusting mechanism, and the linear adjusting mechanism is configured to adjust a distance between the high-voltage pole plate 91 and the ground pole plate 92 along an electric field direction of the high-voltage electric field drying mechanism 9.
Specifically, a plurality of groups of high-voltage pole plates 91 and a plurality of groups of grounding pole plates 92 can be simultaneously arranged, materials are placed between the high-voltage pole plates 91 and the grounding pole plates 92 of each group, and the high-voltage pole plates 91 of each group are connected with an adjustable direct-current power supply, so that the efficiency of drying the materials can be greatly improved.
In one embodiment, the drying medium is set to be introduced from the front side of the drying chamber 8 and discharged from the rear side thereof, and the high voltage plate 91 and the ground plate 92 may be arranged in left and right opposite positions, i.e. the high voltage plate 91 and the ground plate 92 are both vertically arranged and are respectively parallel to the left and right sides of the drying chamber 8, so that the material is placed between the high voltage plate 91 and the ground plate 92 through a tray or shelf, so that the drying medium performs drying treatment on the material when passing between the high voltage plate 91 and the ground plate 92. Correspondingly, the linear adjusting mechanism may adopt an electric push rod known in the art, and the telescopic end of the electric push rod may be connected to the high-voltage pole plate 91 and the ground pole plate 92 may be fixedly disposed through one electric push rod horizontally disposed, or specifically, two electric push rods horizontally disposed opposite to each other may be disposed, and the telescopic ends of the two electric push rods are correspondingly connected to the high-voltage pole plate 91 and the ground pole plate 92, so as to adjust the horizontal distance between the high-voltage pole plate 91 and the ground pole plate 92.
In another embodiment, the drying medium is set to be introduced from the front side of the drying chamber 8 and discharged from the rear side thereof, and each set of the high voltage plate 91 and the ground plate 92 may be arranged in an up-down opposite manner, that is, the high voltage plate 91 and the ground plate 92 are both horizontally arranged and are respectively parallel to the upper side and the lower side of the drying chamber 8, so that the material can be placed on the ground plate 92 through a tray or a shelf, so that the drying medium can dry the material when passing between the high voltage plate 91 and the ground plate 92. Correspondingly, the straight line is adjusted the structure and is included the guide pillar of vertical setting and the integrated configuration of the lantern ring, and wherein, the both sides limit of high-voltage polar plate 91 is equipped with the first lantern ring, and simultaneously, the both sides limit of ground plate 92 is equipped with the second lantern ring, and the guide pillar outside is all established to the first lantern ring and the second lantern ring, and first lantern ring and guide pillar sliding connection to lock with the locking bolt, the second lantern ring is fixed with the guide pillar, can realize the adjustable of vertical interval between high-voltage polar plate 91 and the ground plate 92 from this.
Preferably, a temperature and humidity detecting unit is arranged in the drying chamber 8 in the embodiment; the temperature and humidity detection unit comprises a temperature sensor, a humidity sensor, a control module and a display module, wherein the temperature sensor, the humidity sensor and the display module are respectively in communication connection with the control module.
Specifically, the temperature sensor and the humidity sensor are sensing devices known in the art, the control module may be a single chip microcomputer or a PLC controller known in the art, the display module may be an LCD display known in the art, and none of these components are illustrated in fig. 1.
In the actual work, temperature sensor and humidity transducer are used for gathering temperature information and humidity information in the drying chamber 8 respectively, temperature sensor, humidity transducer feeds back the information of gathering to control module respectively, control module carries out analog-to-digital conversion to received information, and carry to display module, thereby realize the real time monitoring to the humiture in the drying chamber 8 and give operating personnel with relevant information feedback, thereby make things convenient for operating personnel to adjust heat pump system's operating power in real time according to the humiture information in the drying chamber 8, and make a prejudgement to the dry state of material.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A high-voltage electric field heat pump drying system comprises a heat pump system, wherein the heat pump system comprises a condenser and an evaporator; it is characterized in that the preparation method is characterized in that,
the device also comprises a drying chamber and a high-voltage electric field drying mechanism;
the drying chamber, the evaporator and the condenser are sequentially connected into a closed loop through a circulating air path, a drying medium is introduced into the circulating air path, and the high-voltage electric field drying mechanism is arranged in the drying chamber.
2. The high-voltage electric field heat pump drying system of claim 1,
the drying medium includes any one of air, carbon dioxide gas, or nitrogen gas.
3. The high-voltage electric field heat pump drying system of claim 1,
and a fan is arranged on the circulating air path and comprises an axial flow fan.
4. The high-voltage electric field heat pump drying system of claim 3,
the fan includes a plurality ofly, the fan is installed on the circulation wind way between condenser and the drying chamber and/or between the drying chamber and the evaporimeter.
5. The high-voltage electric field heat pump drying system of claim 1,
the high-voltage electric field drying mechanism comprises a high-voltage polar plate and a grounding polar plate which are oppositely arranged at intervals, the high-voltage polar plate is connected with a high-voltage power supply, and the high-voltage power supply adopts an adjustable direct-current power supply.
6. The high-voltage electric field heat pump drying system of claim 5,
the high-voltage polar plate and/or the grounding polar plate are/is arranged on a linear adjusting mechanism, and the linear adjusting mechanism is used for adjusting the distance between the high-voltage polar plate and the grounding polar plate.
7. The high-voltage electric field heat pump drying system of claim 5,
the high-voltage polar plate and the grounding polar plate comprise a plurality of groups;
the high-voltage polar plate and the grounding polar plate are oppositely arranged left and right or up and down in the drying chamber.
8. The high-voltage electric field heat pump drying system of claim 1,
a temperature and humidity detection unit is arranged in the drying chamber;
the temperature and humidity detection unit comprises a temperature sensor, a humidity sensor, a control module and a display module, wherein the temperature sensor, the humidity sensor and the display module are respectively in communication connection with the control module.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114184023A (en) * | 2021-12-01 | 2022-03-15 | 中国科学院理化技术研究所 | Material drying system based on multistage heat pump series connection |
| CN116518701A (en) * | 2023-07-05 | 2023-08-01 | 中建环能科技股份有限公司 | Method for improving dehumidification performance of evaporator of heat pump low-temperature drying equipment and electronic equipment |
| CN116793892A (en) * | 2023-08-29 | 2023-09-22 | 东莞松山湖国际机器人研究院有限公司 | High-voltage electric field drying rate calculation method based on gravity sensor |
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| CN209279534U (en) * | 2018-11-13 | 2019-08-20 | 秦皇岛烟草机械有限责任公司 | A kind of Tobacco drying hot air circulating system |
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| CN102589273A (en) * | 2012-03-26 | 2012-07-18 | 东南大学 | Heat pump drying device |
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