CN214308113U - Energy-conserving drying equipment based on phase transition energy storage - Google Patents

Abstract

The utility model discloses an energy-conserving drying equipment based on phase transition energy storage relates to drying equipment technical field. The device comprises a baking oven provided with an air inlet and an air outlet, wherein the baking oven can be used for heating and drying, the air inlet of the baking oven is connected with an air inlet device, the air outlet of the baking oven is connected with a phase change energy accumulator for phase change energy storage, and the phase change energy accumulator can be used for heat storage and energy storage; the one end and the stoving case of hot blast blowpipe apparatus are linked together, and the hot blast blowpipe apparatus other end is linked together with the phase change energy storage ware, and hot blast blowpipe apparatus is used for the new trend of mend and gets into in proper order and toasts case and phase change energy storage ware to form circulation circuit. This equipment simple operation absorbs and stores the heat of release in the baking oven through the phase change energy storage pipe to further release and carry out the drying to the material, the heat of phase change energy storage pipe release is energy-conserving part promptly, reaches the effect of practicing thrift the energy consumption and practicing thrift the running cost, and drying efficiency is high, can reduce the consumption of the energy, has very important resource effect and environmental protection meaning in the drying field.

Description

Energy-conserving drying equipment based on phase transition energy storage

Technical Field

The utility model relates to a drying equipment technical field especially relates to an energy-conserving drying equipment based on phase transition energy storage.

Background

The drying technology has wide application fields, for example, in the fields of agriculture and industrial manufacturing, materials such as agricultural products and industrial products need to be dried, and meanwhile, the drying process needs to be dehumidified; in the face of various different requirements of different industries, materials with different physicochemical properties, product quality and other aspects, different drying methods are provided according to different drying objects. The drying technology is a technology with properties of experimental science across industries and disciplines, and the principle of transfer engineering needs to be familiar, and the drying process essentially belongs to energy transfer processes such as mass transfer, heat transfer, hydrodynamics, aerodynamics and the like. During the drying process, moisture moves from the interior of the material to the (diffusion) surface and from the surface diffuses into the hot air. The requirements for the drying process to be carried out: the partial pressure of water vapor generated by the water in the material to be dried is greater than the partial pressure of water vapor in the hot air. If the partial pressure of water vapour in the hot air is greater than that produced by the water in the material being dried, the material absorbs water instead.

In order to dry the materials, the drying process is always in the process of continuously discharging the water vapor in the hot air, and in the process of continuously discharging the water vapor in the hot air, although the partial pressure of the water vapor generated by the moisture in the dried materials is higher than that of the water vapor in the hot air, a large amount of heat is also taken away, which is the main reason that the energy consumption of the drying operation is large. It is documented that energy consumption in the uk drying field accounts for approximately 8% of the total industrial energy consumption, and energy consumption in the national drying field is approximately 12% of the total industrial energy consumption. The thermal efficiency of most convection drying is only 30% -60%, so that more energy sources are consumed to dry and dehumidify materials, higher operation cost is needed, and the environmental protection concept is not met. Therefore, how to consume less energy to achieve higher drying rate and moisture removal rate of the materials has very important resource effect and environmental protection significance in the drying field.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having foretell problem to current drying equipment, providing a simple operation, stoving hydrofuge are efficient, can cross constantly to carry out heat recovery to the exhaust hot-air at material drying, practice thrift the energy consumption, practice thrift the running cost, accord with the energy-conserving drying equipment based on phase transition energy storage of environmental protection theory.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme:

an energy-saving drying device based on phase change energy storage comprises a baking oven provided with an air inlet and an air outlet, wherein the baking oven can be used for heating and drying; the one end and the stoving case of air inlet unit are linked together, the air inlet unit other end is linked together with the phase change energy memory, air inlet unit is used for the benefit new trend and gets into in proper order and toasts case and phase change energy memory to form circulation circuit.

Preferably, the air outlet of the baking box is connected with the phase change energy storage device through a combined air valve; the combined air valve selectively communicates or separates the baking box and the phase change energy storage device.

Preferably, the combined air valve comprises a valve body with an upper opening and a lower opening, a plurality of shutter plates which are sequentially arranged are arranged in the valve body, and the shutter plates are coupled and connected through a connecting piece; the valve body is provided with a first air supplement valve and a first exhaust valve; the first air supplement valve can be used for communicating or sealing the phase change energy storage device with the outside, and the first exhaust valve can be used for communicating or sealing the baking box with the outside; the shutter valve plate can separate the upper opening and the lower opening of the valve body, and can separate the first air supplement valve from the first air exhaust valve.

Preferably, the valve body is of a square cylindrical structure with an upper opening and a lower opening; the first air supplementing valve and the first air exhausting valve are respectively arranged on two opposite side surfaces of the valve body.

Preferably, the plurality of louver valve plates arranged in sequence are obliquely arranged on a diagonal line in the valve body.

Preferably, the connecting piece is a connecting rod; the shutter valve plate is movably connected with the valve body through a rotating shaft, and the end part of the rotating shaft is connected with the connecting piece through a rotating arm.

Preferably, the end of the rotating shaft is connected with a motor, and the motor can drive the rotating shaft to rotate and drive the shutter valve plate to separate the upper opening and the lower opening of the valve body.

Preferably, the baking oven comprises an oven body and a heating component arranged in the oven body; the heating component comprises a graphene electrothermal radiation plate; the utility model discloses a graphene electrothermal radiation plate, including the protection rete, the graphite alkene electrothermal coating, the substrate insulation layer that set gradually, the graphite alkene electrothermal coating coats on the substrate insulation layer, the protection rete is scribbled and is located on the graphite alkene electrothermal coating, the protection rete is used for preventing the oxidation of graphite alkene electrothermal coating.

Preferably, the graphene electric heating radiation plate further comprises a support substrate, and the support substrate is a stainless steel plate; the base insulating layer is coated on the supporting base material; the substrate insulating layer is made of nano-ceramics, and the protective film layer is an enamel film coating layer.

Preferably, the number of the graphene electrothermal radiation plates is two or more; the graphene electrothermal radiating plate is fixed on the inner wall of the box body.

Preferably, the number of the graphene electrothermal radiation plates is two, and the graphene electrothermal radiation plates are respectively fixed on the inner wall of one opposite side surface of the box body.

Preferably, the inner wall of the box body is provided with a first heat insulation layer, and the graphene electrothermal radiation plate is fixed on one side surface, close to the interior of the box body, of the first heat insulation layer; the first heat insulation layer is made of silicon dioxide aerogel felt or aluminum silicate cotton.

Preferably, the box body is of a square structure; one side of the box body is an opening surface, the box body is connected with a box door used for covering the opening surface, and the box door is connected with the box body through a hinge.

Preferably, the phase change energy storage device comprises a shell and a plurality of phase change energy storage tubes fixed inside the shell, and the phase change energy storage tubes are used for storing heat and energy.

Preferably, the two ends of the phase change energy storage tubes are fixed on the inner wall of one opposite side face of the shell, the number of the phase change energy storage tubes is multiple, and the multiple phase change energy storage tubes are arranged in parallel.

Preferably, the phase change energy storage tube comprises a tube body and a phase change energy storage material sealed inside the tube body; the tube body is of a strip-shaped hollow structure; the inner wall of the shell is provided with notches for fixing two ends of the phase change energy storage tube.

Preferably, the pipe body is a flat copper pipe or a flat aluminum pipe; the phase change energy storage material is paraffin.

Preferably, the phase change energy storage is fixed in the upper end of toasting the case, air inlet unit's one end is linked together through the upper end of first pipeline with the phase change energy storage, air inlet unit's the other end is linked together through the lower extreme of second pipeline with toasting the case.

Preferably, the air inlet device comprises a centrifugal fan, and an air exchange valve assembly is connected between the centrifugal fan and the first pipeline; the air exchange valve component comprises a valve barrel with openings at two ends, and an air exchange valve plate is arranged in the valve barrel; the valve barrel is provided with a second air supplementing valve and a second exhaust valve, the second air supplementing valve can be used for communicating or sealing the centrifugal fan with the outside, and the second exhaust valve can be used for communicating or sealing the first pipeline with the outside; the air exchange valve plate can be used for separating openings at two ends of the valve cylinder; and the second air supplement valve and the second air exhaust valve can be separated.

Compared with the prior art, the beneficial effects of the utility model reside in that: the energy-saving drying equipment based on phase change energy storage comprises a baking box provided with an air inlet and an air outlet, wherein the baking box can be used for heating and drying; the one end and the stoving case of air inlet unit are linked together, the air inlet unit other end is linked together with the phase change energy memory, air inlet unit is used for the benefit new trend and gets into in proper order and toasts case and phase change energy memory to form circulation circuit. The equipment is convenient to operate, heat released in the baking oven is absorbed and stored through the phase change energy storage tube in the phase change energy storage device, and is further released to dry the material, and the heat released by the phase change energy storage tube is an energy-saving part, so that the effects of saving energy consumption and saving operation cost are achieved; the graphene electric heating radiation plate is adopted in the baking oven for heating and drying, so that the baking oven has the advantages of uniform heat generation, high heating efficiency, quick thermal response and the like, and the drying and dehumidifying efficiency of the baking oven is improved; the baking oven and the phase change energy storage device are communicated or separated by adopting a combined air valve, and are matched with an air exchange valve component, so that the direction of air flow is controlled in different working modes, and the operation is convenient and fast; the equipment has high drying efficiency, reduces energy consumption, and has very important resource effect and environmental protection significance in the drying field.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the mechanisms shown in the drawings without creative efforts.

Fig. 1 is a structural diagram of an energy-saving drying device based on phase change energy storage in an embodiment of the present invention;

FIG. 2 is a right side view of FIG. 1;

fig. 3 is a cross-sectional view along a direction a-a in fig. 1 of an energy-saving drying device based on phase change energy storage in an embodiment of the present invention;

fig. 4 is a cross-sectional view along a direction a-a in fig. 1 in another operation state of the energy-saving drying apparatus based on phase change energy storage according to the embodiment of the present invention;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 1;

fig. 6 is a structural diagram of a combined air valve of an energy-saving drying device based on phase change energy storage in an embodiment of the present invention;

FIG. 7 is a left side view of FIG. 6;

FIG. 8 is a top view of FIG. 6;

FIG. 9 is a cross-sectional view taken along line C-C of FIG. 6;

fig. 10 is a structural diagram of an operating state of a combined air valve of an energy-saving drying device based on phase change energy storage according to an embodiment of the present invention;

fig. 11 is a structural diagram of another working state of the combined air valve of the energy-saving drying equipment based on phase change energy storage according to the embodiment of the present invention;

fig. 12 is a structural diagram of an air exchange valve assembly of an energy-saving drying device based on phase change energy storage in an embodiment of the present invention;

FIG. 13 is a right side view of FIG. 12;

FIG. 14 is a left side view of FIG. 12;

FIG. 15 is a top view of FIG. 12;

fig. 16 is a cross-sectional view taken along D-D in fig. 13 in an operating state of an air exchange valve assembly of an energy-saving drying apparatus based on phase change energy storage according to an embodiment of the present invention;

fig. 17 is a sectional view taken along D-D in fig. 13 in another working state of the ventilation valve assembly of the energy-saving drying equipment based on phase change energy storage according to the embodiment of the present invention;

fig. 18 is a structural diagram of a phase change energy storage device of an energy-saving drying device based on phase change energy storage in an embodiment of the present invention;

FIG. 19 is a top view of FIG. 18;

FIG. 20 is a bottom view of FIG. 18;

FIG. 21 is a cross-sectional view taken along line F-F of FIG. 19;

FIG. 22 is a cross-sectional view E-E of FIG. 18;

in the figure: 1 is a baking box, 101 is a box door, 102 is a hinge, 103 is a handle, 104 is a box leg, 105 is a box inner wall, 106 is a first heat-insulating layer, 107 is a first air duct connector, 108 is an air flow window, 2 is a phase change energy storage device, 201 is a phase change energy storage tube, 202 is a shell inner wall, 203 is a shell, 204 is a second first heat-insulating layer, 205 is a second air duct connector, 206 is a fixed flange, 3 is a centrifugal fan, 4 is an air change valve component, 401 is a second exhaust valve, 401b is a second exhaust plate, 401c is a second exhaust duct, 402 is a second air supplement valve, 402b is a second air supplement plate, 402c is a second air supplement duct, 403 is an air change valve plate, 404 is a fifth rotating shaft, 404a is a fifth motor connecting end, 405 is a sixth rotating shaft, 405a sixth motor connecting end, 406 is a fourth motor connecting end, 5 is a combined air valve, 501 is a first air supplement valve, 501a is a second rotating shaft, 501b is a first air supplement plate, 501c is a first air supplement cylinder, 502 is a first air exhaust valve, 502a is a third rotating shaft, 502b is a first air exhaust plate, 502c is a first air exhaust cylinder, 503 is a shutter valve plate, 504 is a first rotating shaft, 505 is a rotating arm, 506 is a connecting rod, 507 is a valve body, 508 is a first motor connecting end, 6 is a graphene electric heating radiation plate, 7 is a first pipeline, and 8 is a second pipeline.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, the present application is described in further detail with reference to the accompanying drawings and the detailed description.

In the description of the present application, it is to be understood that the terms "intermediate," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular orientation, and thus should not be construed as limiting the present application. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In addition, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are intended to be inclusive and mean, for example, that there may be 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 meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example (b): as shown in fig. 1 to 4, the energy-saving drying apparatus based on phase-change energy storage in this embodiment is widely applicable in the agricultural field and the industrial manufacturing field, for example, drying and dehumidifying some materials such as agricultural products and industrial products; the drying process essentially belongs to energy transfer processes such as mass transfer, heat transfer, hydrodynamics, aerodynamics and the like, the equipment comprises a baking box 1 provided with an air inlet and an air outlet, and the baking box 1 can be used for heating and drying materials; an air inlet device is connected to an air inlet of the baking box 1, and air flow is introduced to dry the materials through the air inlet device; an air outlet of the baking oven 1 is connected with a phase change energy accumulator 2 for phase change energy storage, in the embodiment, the air outlet of the baking oven 1 is connected with an air inlet of the phase change energy accumulator 2, the phase change energy accumulator 2 can be used for heat storage and energy storage, and the phase change energy accumulator 2 absorbs heat evaporated by the baking oven 1 and stores the heat in a mode of heat fusion and sensible heat; in the present embodiment, the phase change energy storage 2 is fixed at the upper end of the oven 1; one end of the air inlet device is communicated with an air inlet of the baking box 1, and the other end of the air inlet device is communicated with an air outlet of the phase change energy accumulator 2; the new trend that brings through hot blast blowpipe apparatus gets into in proper order and toasts case 1 and phase change energy storage ware 2 to form circulation circuit, toast the air outlet of case 1 in this embodiment and be airflow window 108.

Specifically, the air outlet of the baking oven 1 is connected with the phase change energy storage 2 through a combined air valve 5, and the structure of the combined air valve 5 refers to fig. 6-11; the combined air valve 5 can selectively communicate or separate the baking oven 1 and the phase change energy storage 2. The energy-saving drying equipment in the embodiment has two operation modes, namely a normal operation mode and an energy-saving operation mode, as shown in fig. 3 and 4, fig. 3 is a schematic diagram of the normal operation mode of the equipment, and fig. 4 is a schematic diagram of the energy-saving operation mode of the equipment. The combined air valve 5 comprises a valve body 507 with an upper opening and a lower opening, the upper end of the combined air valve 5 is communicated with an air inlet of the phase change energy accumulator 2, the lower end of the combined air valve 5 is communicated with an air outlet of the baking oven 1, a plurality of shutter plates 503 which are sequentially arranged are arranged in the valve body 507, and the shutter plates 503 are coupled and connected through a connecting piece; in this embodiment, the connecting member is a connecting rod 506; the louver valve plates 503 are movably connected with the valve body 507 through the first rotating shafts 504, two ends of the first rotating shafts 504 are fixed on the valve body 507, the first rotating shafts 504 can rotate relative to the valve body 507, in this embodiment, the number of the louver valves is several, each louver valve plate 503 corresponds to the first rotating shaft 504, and the end parts of the several first rotating shafts 504 penetrate through the valve body 507 and are connected with the connecting pieces through the rotating arms 505 one by one. One of the first rotating shafts 504 penetrates through the valve body 507 and is connected with a motor, the part of the first rotating shaft 504 connected with the motor is a first motor connecting end 508, a speed reducer is arranged between the motor and the first rotating shaft 504, and the motor can be a servo motor; the motor is started to drive the first rotating shaft 504 to rotate, the first rotating shaft 504 drives the rotating arm 505 to rotate, one end of the rotating arm 505 is fixedly connected with the first rotating shaft 504, the other end of the rotating arm 505 is connected with the connecting rod 506, and the connecting rod 506 is driven to rotate through the rotating arm 505, so that the shutter plates 503 are driven to rotate, and the shutter plates 503 are driven to rotate to be in a vertical parallel state from being positioned on the same horizontal plane; the opening or closing position of the shutter plates 503 is changed, the shaft connecting end of the speed reducing motor is connected with the first motor connecting end 508 to obtain driving power transmission, the speed reducing motor drives the first motor connecting end 508 of the first rotating shaft 504 to rotate, and all the shutter plates 503 are opened or closed in linkage under the linkage action of the end connecting rod 506 of the rotating arm 505, so that the communication or separation between the baking box 1 and the phase change energy storage device 2 is controlled, and the operation is convenient.

Specifically, a first air supplement valve 501 and a first air exhaust valve 502 are arranged on the valve body 507; the first air supplement valve 501 comprises a first air supplement opening and a first air supplement plate 501b, and the first exhaust valve 502 comprises a first exhaust opening and a first exhaust plate 502 b; the first air supplement plate 501b is used for sealing a first air supplement port, the first exhaust plate 502b is used for sealing a first exhaust port, and the first air supplement port and the first exhaust port are respectively corresponding to a first air supplement cylinder 501c and a first exhaust cylinder 502c on the side wall of the valve body 507; the first air supplement valve 501 can be used for communicating or sealing the phase change energy storage device 2 with the outside, and the first air exhaust valve 502 can be used for communicating or sealing the baking box 1 with the outside; the shutter plate 503 may partition the upper and lower openings of the valve body 507 and may partition the first air supplement valve 501 and the first air exhaust valve 502. The first air supplement plate 501b, the first exhaust plate 502b and the shutter plate 503 work simultaneously, fig. 10 shows the structure of the combined air valve 5 under the energy-saving work of the device, and fig. 11 shows the structure of the combined air valve 5 under the normal work of the device; in an energy-saving working state, the first air supplement valve 501 and the first exhaust valve 502 are in an open state, and the phase change energy storage device 2 is communicated with the outside through a first air supplement opening; toast case 1 and be linked together through first air exit and external world, under the energy-conserving mode, motor control shutter valve plate 503 rotates to same horizontal plane on and will separate the upper and lower opening of valve body 507 between, make the air current unable follow toast case 1 and flow to phase change energy storage ware 2. In a specific embodiment, the first air supplement plate 501b is movably connected to the first air supplement cylinder through a second rotating shaft 501a, and the first exhaust plate 502b is connected to the first exhaust cylinder through a third rotating shaft 502 a.

In this embodiment, the valve body 507 is a square cylindrical structure with an upper opening and a lower opening; the first air supplement valve 501 and the first air exhaust valve 502 are respectively arranged on two opposite side surfaces of the valve body 507. The plurality of shutter plates 503 arranged in sequence are obliquely arranged on a diagonal line inside the valve body 507, that is, the first rotating shaft 504 is positioned on a plane where the oblique diagonal line of the square cylinder is positioned, so that the first air supply valve 501 and the first air exhaust valve 502 are separated, and the baking oven 1 and the phase change energy storage device 2 are separated. In another embodiment, the shutter plate 503 is mainly used to separate the oven chamber 1 from the phase change energy storage device 2, and therefore, the first air supplement valve 501 may be disposed on the phase change energy storage device 2, and the first air exhaust valve 502 may be disposed on the oven chamber 1.

Specifically, referring to fig. 5, the oven 1 includes a housing, a heating member disposed inside the housing; the heating member includes a graphene electrothermal radiation plate 6; the graphene electrothermal radiation plate 6 comprises a protection film layer, a graphene electrothermal coating and a base insulating layer which are sequentially arranged, wherein the graphene electrothermal coating is coated on the base insulating layer, the protection film layer is coated on the graphene electrothermal coating, and the protection film layer is used for preventing the graphene electrothermal coating from being oxidized. Specifically, the graphene electrothermal radiation plate 6 further comprises a support base material, and the support base material is a stainless steel plate; the base insulating layer is coated on the supporting substrate and used for insulating the stainless steel plate, and in the embodiment, the base insulating layer is made of nano ceramic; and coating the graphene electrothermal coating on the substrate insulating layer, coating the protective film layer on the graphene electrothermal coating, wherein the protective film layer is used for preventing the graphene electrothermal coating from being oxidized, and in the embodiment, the protective film layer is an enamel coated layer. When the graphene electrothermal radiation plate 6 is electrified, heat is generated mainly in a far infrared radiation mode, the planar infrared emission spectrum is achieved, the effects of uniform heat generation and the like are achieved, and particularly the advantages of high heating efficiency, fast thermal response and the like are achieved in the far infrared radiation mode. In another embodiment, a heating rod, such as a quartz tube or a copper tube, may be further used in the oven to perform temperature-controlled heating by energization, but the heating is not uniform, and the heating and drying effect is lower than that of the graphene electrothermal radiation plate 6.

Specifically, the number of the graphene electrothermal radiation plates 6 is two or more; the graphene electrothermal radiating plate 6 is fixed on the inner wall 105 of the box body. In this embodiment, the number of the graphene electrothermal radiation plates 6 is two, and the two graphene electrothermal radiation plates are respectively fixed on the inner wall 105 of the box body on one opposite side surface of the box body, so that the effects of uniform heating and improved heating efficiency are achieved. A first heat insulation layer 106 is arranged on the inner wall 105 of the box body, and the graphene electrothermal radiation plate 6 is fixed on one side, close to the interior of the box body, of the first heat insulation layer 106; the first thermal insulation layer 106 may be silica aerogel blanket or aluminum silicate wool; the aluminum silicate cotton has low thermal conductivity, low thermal capacity, excellent thermal stability, chemical stability and sound absorption, no corrosive substances and excellent heat insulation effect. The silica aerogel felt has the heat insulation effect which is 2-5 times that of the traditional heat insulation material, the thickness of a heat insulation layer can be reduced, the heat loss after heat insulation is small, and the space utilization rate is high. And at high temperature, the performance advantages are more obvious; has hydrophobicity and fire resistance; moisture can be effectively prevented from entering the equipment; and has the fireproof performance from B1 level to A level. In this embodiment, silica aerogel blanket is used for the first thermal insulation layer 106.

In this embodiment, the baking oven 1 is a square structure, so that materials to be dried can be placed in the baking oven, one side surface of the oven body is an open surface, the oven body is connected with an oven door 101 for covering the open surface, the oven door 101 is connected with the oven body through a hinge 102, and the materials are placed in the baking oven 1 by opening the oven door 101; a handle 103 is arranged at the edge of one side of the door 101 away from the hinge 102. In this embodiment, the two graphene electrothermal radiation plates 6 are disposed on the inner wall 105 of the box body of the two adjacent side panels of the box door 101.

Specifically, referring to fig. 18 to 22, the phase change energy storage device 2 includes a housing 203 and a plurality of phase change energy storage tubes 201 fixed inside the housing 203, the phase change energy storage device 2 is fixed at the upper end of the baking oven 1, and the phase change energy storage tubes 201 are used for storing heat and energy. The two ends of the phase change energy storage tubes 201 are fixed on the inner wall 202 of the shell 203, the number of the phase change energy storage tubes 201 is a plurality, the energy storage tubes of the shell 203 are arranged in the box of the phase change energy storage device 2 in an array mode, and the phase change energy storage tubes 201 are arranged in parallel. Specifically, the phase change energy storage tube 201 includes a tube body and a phase change energy storage material sealed inside the tube body; the pipe body is flat bar-shaped hollow structure, and the inner wall 202 of the shell is provided with notches for fixing two ends of the phase change energy storage pipe 201. On the premise of meeting the requirement that the airflow passes through the sectional area, the more the number of the phase change energy storage tubes 201 is, the larger the heat transfer area is due to high temperature, the more the quality of the phase change material for heat storage is, and the more the total amount of heat storage is. In a specific embodiment, the inner wall of the casing is provided with a second thermal insulation layer 204, and the second thermal insulation layer 204 may be silica aerogel felt or aluminum silicate cotton; the aluminum silicate cotton has low thermal conductivity, low thermal capacity, excellent thermal stability, chemical stability and sound absorption, no corrosive substances and excellent heat insulation effect. The silica aerogel felt has the heat insulation effect which is 2-5 times that of the traditional heat insulation material, the thickness of a heat insulation layer can be reduced, the heat loss after heat insulation is small, and the space utilization rate is high. And at high temperature, the performance advantages are more obvious; has hydrophobicity and fire resistance; moisture can be effectively prevented from entering the equipment; and has the fireproof performance from B1 level to A level. In this embodiment, the second thermal insulation layer 205 is silica aerogel blanket.

In this embodiment, the tube body is a flat copper tube or a flat aluminum tube with good heat conduction; the phase change energy storage material adopts paraffin, and the specific heat capacity of the paraffin is generally 2.14-2.9 J.g due to large heat of fusion of the paraffin^-1·K^-1The heat of fusion is generally 200 to 220 J.g^-1Therefore, paraffin is selected as the phase change energy storage material. According to the defect that the paraffin has a small heat conductivity coefficient, a flat copper pipe or a flat aluminum pipe with good heat conductivity is selected, so that the paraffin and the flat copper pipe or the flat aluminum pipe have a large contact heat transfer area, and according to a heat conduction formula: the thermal conductivity and thermal resistance is L/(kxA); wherein L is the thickness of contact heat transfer, A is the sectional area of the contact heat transfer surface vertical to the heat flow direction, and k is the thermal conductivity of the material. The flat copper pipe or the flat aluminum pipe enables the thickness of the section of the heat flow passing through the paraffin to be smaller, and the thermodynamic comprehensive performance is improved.

Specifically, as shown in fig. 1, the phase change energy storage device 2 is fixed at the upper end of the baking oven 1, the phase change energy storage device 2 is provided with a fixing flange 206, the fixing flange 206 is fixed at the upper end of the baking oven 1 in a sealing manner through a screw, the lower end of the phase change energy storage device 2 is provided with a second air duct connecting port 205, the second air duct connecting port 205 of the phase change energy storage device 2 is communicated with the air outlet of the baking oven 1, the upper end of the baking oven 1 is the air outlet of the baking oven 1, and the lower end of the baking oven 1 is the air inlet of the baking oven 1; the lower end of the phase change energy storage device 2 is an air inlet of the phase change energy storage device 2, and the upper end of the phase change energy storage device 2 is an air outlet of the phase change energy storage device 2; through 5 sealing connection of combination blast gate between phase change energy storage ware 2 and the toasting case 1, the air outlet and the hot blast blowpipe apparatus of phase change energy storage ware 2 pass through first pipeline 7 sealing connection, toast the air intake and the hot blast blowpipe apparatus of case 1 and pass through second pipeline 8 sealing connection, toast the air intake of case 1 and be equipped with first tuber pipe connector 107, second pipeline 8 and first tuber pipe connector 107 are connected. In this embodiment, the first duct 7 is a U-shaped duct, and the second duct 8 is a J-shaped duct. Specifically, the lower end of the oven 1 is fixed with an oven leg 104 for supporting the whole apparatus.

Specifically, the air inlet device comprises a centrifugal fan 3, and air flow is provided for the whole equipment through the centrifugal fan 3; specifically, referring to fig. 12 to 17, an air exchange valve assembly 4 is connected between the centrifugal fan 3 and the first pipeline 7, the air exchange valve assembly 4 includes a valve cylinder with openings at two ends, the upper end of the valve cylinder is fixedly connected with the first pipeline 7, the lower end of the valve cylinder is fixedly connected with the centrifugal fan 3, an air exchange valve plate 403 is arranged inside the valve cylinder, the air exchange valve plate 403 can be used for spacing the upper end and the lower end of the valve cylinder, and the inner diameter of the opening at the upper end of the valve cylinder is greater than the inner diameter of the opening at the lower end of the valve cylinder; specifically, a second air supply valve 402 and a second air exhaust valve 401 are arranged on the side wall of the valve cylinder, the second air supply valve 402 comprises a second air supply opening and a second air exhaust opening, and the second air supply opening and the second air exhaust opening are respectively corresponding to a second air supply cylinder 402c and a second air exhaust cylinder 401c on the side wall of the valve cylinder; in this embodiment, the air valve plate can be used to separate the upper end and the lower end of the valve cylinder, and can also separate the second air supplement valve 402 and the second exhaust valve 401; the second air supplement plate 402b is used for sealing a second air supplement opening, and the second exhaust plate 401b is used for sealing a second exhaust opening; the second air supplement valve 402 may be used to connect or seal the centrifugal fan 3 with the outside, and the second air exhaust valve 401 may be used to connect or seal the first pipeline 7 with the outside. Fig. 3 and fig. 16 correspond to the structure diagram of the ventilation valve assembly 4 in the normal operation mode of the device, in the normal operation mode, the second air supplement valve 402 and the second exhaust valve 401 are both in an open state, and the ventilation valve plate 403 is in a closed state; fig. 4 and 17 correspond to the structure diagram of the air exchange valve assembly 4 in the energy-saving working mode of the equipment; in the energy-saving working mode, the second air supplement valve 402 and the second exhaust valve 401 are both in a closed state, and the air change valve plate 403 is in an open state. In a specific embodiment, the ventilation valve plate 403 is movably connected with the valve cylinder through a fourth rotating shaft 406; the second air supplement plate 402b is connected with the second air supplement cylinder through a fifth rotating shaft 404; the second air exhaust plate is connected with the second air exhaust cylinder through a sixth rotating shaft 405;

under conventional operating mode, second air supplement valve 402, second exhaust valve 401 are the open mode, trade wind valve plate 403 is the closed condition, centrifugal fan 3 gets into second pipeline 8 with new trend air current along second air supplement mouth suction, and carry to the drying cabinet, through the drive of graphite alkene electrothermal radiation board 6 heating and air current in the drying cabinet, dry the material, hot gas flow in the baking cabinet 1 gets into phase change energy storage ware 2 and carries out the heat accumulation through phase change energy storage pipe 201, and store the heat with the mode of fusing heat and sensible heat, the air current flows through second pipeline 8 and discharges along the second exhaust mouth.

Under the energy-conserving mode of operation, second air supplement valve 402, second exhaust valve 401 are the closed condition, trade wind valve plate 403 is the open condition, centrifugal fan 3 gets into phase change energy storage device 2 with the new trend air current suction along first air supplement mouth, because the new trend temperature that gets into from first air supplement mouth is less than phase change energy storage tube 201 surface temperature of phase change energy storage device 2, phase change energy storage tube 201 is to getting into new trend heat transfer promptly, the new trend that gets into obtains the heat and forms the temperature rise, centrifugal fan 3's air intake induced draft effect, will obtain the heat and form the new trend suction of temperature rise, the suction is to first pipeline 7, and get into toasting case 1 through second pipeline 8, discharge along first exhaust mouth afterwards.

Specifically, the second rotating shaft 501a, the third rotating shaft 502a, the fourth rotating shaft 406, the fifth rotating shaft 404 and the sixth rotating shaft 405 are all connected with a servo motor. A second motor connecting end is arranged on the second rotating shaft 501a, a third motor connecting end is arranged on the third rotating shaft 502a, a fourth motor connecting end 406a is arranged on the fourth rotating shaft 406, a fifth motor connecting end 404a is arranged on the fifth rotating shaft 404, and a sixth motor connecting end 405a is arranged on the sixth rotating shaft 405.

The working principle is as follows: the energy-saving drying equipment based on phase change energy storage comprises a baking box 1 provided with an air inlet and an air outlet, wherein the baking box 1 can be used for heating and drying, the air inlet of the baking box 1 is connected with an air inlet device, the air outlet of the baking box 1 is connected with a phase change energy storage device 2 used for phase change energy storage, and the phase change energy storage device 2 can be used for heat storage and energy storage; one end of the air inlet device is communicated with the baking box 1, the other end of the air inlet device is communicated with the phase change energy storage device 2, and the air inlet device is used for supplementing fresh air and sequentially enters the baking box 1 and the phase change energy storage device 2 to form a circulation loop; the energy-saving drying equipment based on phase change energy storage has a conventional working mode and an energy-saving working mode;

and (3) a normal working mode:

the air exchange valve plate 403 of the air exchange valve component 4 is in a closed position;

the second exhaust plate 401b of the second exhaust valve 401 is in an open position;

the second air supplement plate 402b of the second air supplement valve 402 is in an open position;

the shutter plate 503 of the combined air valve 5 is in an open position;

the first air supplement plate 501b of the first air supplement valve 501 is in a closed position;

the first exhaust plate 502b of the first exhaust valve 502 is in the closed position;

the method comprises the steps of placing materials to be dried in a space between two opposite sides of graphene electrothermal radiation plates 6 in a baking oven 1, starting the graphene electrothermal radiation plates 6, synchronously starting a centrifugal fan 3, heating the materials to be dried by thermal radiation of the graphene electrothermal radiation plates 6, increasing the temperature of the materials to be dried, evaporating liquid phase components in the materials, allowing the liquid phase components evaporated from the materials to flow upwards along with the blast power of the centrifugal fan 3 through an air outlet at the upper end of the baking oven 1, allowing the liquid phase components to enter a phase-change energy storage device 2, allowing the surface of a phase-change energy storage tube 201 of the phase-change energy storage device 2 to be heated by heat conduction, allowing the phase-change media in the phase-change energy storage tube 201 to absorb the heat evaporated from the liquid phase components, allowing the temperature of the phase-change media to increase after absorbing the heat, and allowing the materials to be blown by the centrifugal fan 3, the gas that the liquid phase composition evaporates gets into first pipeline 7 from phase change energy storage ware 2's second tuber pipe connector 205, then go into air change valve module 4, by the inside evaporation liquid phase composition of second air exit discharge material, the induced air inlet of centrifugal fan 3 is from the first supply air inlet of air change valve module 4, in the blast air effect of centrifugal fan 3 air outlet, the air current gets into toasts case 1 by the second pipeline 8 of connecting centrifugal fan 3 air outlet, cycle according to the aforesaid, the material that finally needs drying process is under the radiation heating effect of graphite alkene electrothermal radiation board 6, the inside evaporation liquid phase composition of material is evaporated and is reached the drying purpose. The liquid phase component of the material to be dried is evaporated to the drying process, the phase change medium in the phase change energy storage tube 201 absorbs the heat of evaporation of the liquid phase component, and the heat is stored in a melting heat and sensible heat manner.

Energy saving mode of operation

The air exchange valve plate 403 of the air exchange valve component 4 is in an open position;

the second exhaust plate 401b of the second exhaust valve 401 is in a closed position;

the second air supplement plate 402b of the second air supplement valve 402 is in a closed position;

the shutter plate 503 of the combined air valve 5 is in a closed position;

a first air supplement plate 501b of the first air supplement valve 501 is in an open position;

the first exhaust plate 502b of the first exhaust valve 502 is in an open position;

the energy-saving working mode is to dry the materials to be dried by utilizing the stored heat of the phase-change energy storage medium in the phase-change energy storage tube 201 of the phase-change energy storage device 2; placing materials to be dried in a space between the graphene electrothermal radiation plates 6 at two sides in the baking oven 1 in opposite directions; starting the centrifugal fan 3, leading air to act at an air inlet of the centrifugal fan 3, leading fresh air to enter from a first air inlet and flow into the phase change energy storage device 2, leading the temperature of the fresh air entering from the first air inlet to be lower than the surface temperature of the phase change energy storage tube 201 of the phase change energy storage device 2, leading the phase change energy storage tube 201 to transfer heat to the fresh air entering, leading the fresh air to obtain heat to form temperature rise under the action of leading air at the air inlet of the centrifugal fan 3, sucking the fresh air which obtains heat to form temperature rise through a first pipeline 7, leading the fresh air to enter the air exchange valve assembly 4, leading the fresh air to enter the centrifugal fan 3 through the air exchange valve assembly 4, converting the suction air into blast air in the centrifugal fan 3, leading the air blast action of the centrifugal fan 3, leading the fresh air which obtains heat to form temperature rise to flow through a second pipeline 8 under positive pressure, leading the fresh air flow which obtains heat to form temperature rise to cooperate with the heating work of the graphene electrothermal radiation plates 6 at two sides of the baking box 1 to heat materials to heat the materials to be dried, at this moment, the heat load of the graphene electrothermal radiation plates 6 on the two sides of the baking oven 1 is replaced by heat energy in the fresh air with the temperature rise formed by the obtained heat or partially replaced, and the positive pressure air blown by the centrifugal fan 3 is discharged through the first exhaust port. The air inlet of the centrifugal fan 3 is used for inducing air, fresh air flow continues to enter from the first air supplementing opening, the circulation is repeated, and finally, the evaporation liquid phase component in the material is evaporated to achieve the drying purpose under the action of heat release of radiation heating of the graphene electrothermal radiation plate 6 and heat storage of the phase change energy storage tube 201. The sum of the heat released by the phase change energy storage tube 201 is a substantial energy saving part.

The equipment is convenient to operate, heat released in the baking oven 1 is absorbed and stored through the phase change energy storage tube 201 in the phase change energy storage device 2, and is further released to dry materials, and the heat released by the phase change energy storage tube 201 is an energy-saving part, so that the effects of saving energy consumption and saving operation cost are achieved; the graphene electrothermal radiation plate 6 is adopted in the baking oven 1 for heating and baking, so that the baking oven has the advantages of uniform heat generation, quick thermal response and the like, and the baking and dehumidifying efficiency of the baking oven 1 is improved; the baking oven 1 is communicated or separated with the phase change energy storage device 2 by adopting a combined air valve 5, and is matched with an air exchange valve component 4, so that the direction of air flow is controlled in different working modes, and the operation is convenient and fast; the equipment has high drying efficiency, reduces energy consumption, and has very important resource effect and environmental protection significance in the drying field.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The energy-saving drying equipment based on phase change energy storage is characterized by comprising a baking oven provided with an air inlet and an air outlet, wherein the baking oven can be used for heating and drying; the one end and the stoving case of air inlet unit are linked together, the air inlet unit other end is linked together with the phase change energy memory, air inlet unit is used for the benefit new trend and gets into in proper order and toasts case and phase change energy memory to form circulation circuit.

2. The energy-saving drying equipment based on phase change energy storage of claim 1, wherein the air outlet of the baking oven is connected with the phase change energy storage device through a combined air valve; the combined air valve selectively communicates or separates the baking box and the phase change energy storage device.

3. The energy-saving drying equipment based on phase change energy storage of claim 2, wherein the combined air valve comprises a valve body with an upper opening and a lower opening, a plurality of shutter plates which are arranged in sequence are arranged in the valve body, and the shutter plates are coupled and connected through a connecting piece; the valve body is provided with a first air supplement valve and a first exhaust valve; the first air supplement valve can be used for communicating or sealing the phase change energy storage device with the outside, and the first exhaust valve can be used for communicating or sealing the baking box with the outside; the shutter valve plate can separate the upper opening and the lower opening of the valve body, and can separate the first air supplement valve from the first air exhaust valve.

4. The energy-saving drying equipment based on phase change energy storage according to claim 3, wherein the connecting piece is a connecting rod; the shutter valve plate is movably connected with the valve body through a rotating shaft, and the end part of the rotating shaft is connected with the connecting piece through a rotating arm.

5. The energy-saving drying equipment based on phase change energy storage according to claim 1, wherein the oven comprises an oven body, a heating component arranged inside the oven body; the heating component comprises a graphene electrothermal radiation plate; the utility model discloses a graphene electrothermal radiation plate, including the protection rete, the graphite alkene electrothermal coating, the substrate insulation layer that set gradually, the graphite alkene electrothermal coating coats on the substrate insulation layer, the protection rete is scribbled and is located on the graphite alkene electrothermal coating, the protection rete is used for preventing the oxidation of graphite alkene electrothermal coating.

6. The energy-saving drying equipment based on phase-change energy storage according to claim 5, wherein the graphene electroheat radiation panel further comprises a support substrate, and the support substrate is a stainless steel plate; the base insulating layer is coated on the supporting base material; the substrate insulating layer is made of nano-ceramics, and the protective film layer is an enamel film coating layer.

7. The energy-saving drying equipment based on phase change energy storage according to claim 6, wherein the number of the graphene electrothermal radiation plates is two or more; the graphene electrothermal radiating plate is fixed on the inner wall of the box body.

8. The energy-saving drying equipment based on phase-change energy storage according to claim 1, wherein the phase-change energy storage comprises a shell and a plurality of phase-change energy storage tubes fixed inside the shell, and the phase-change energy storage tubes are used for storing heat and energy.

9. The energy-saving drying equipment based on phase change energy storage of claim 1, wherein the phase change energy storage is fixed at the upper end of the baking oven, one end of the air intake device is communicated with the upper end of the phase change energy storage through a first pipeline, and the other end of the air intake device is communicated with the lower end of the baking oven through a second pipeline.

10. The energy-saving drying equipment based on phase change energy storage according to claim 9, wherein the air intake device comprises a centrifugal fan, and an air exchange valve assembly is connected between the centrifugal fan and the first pipeline; the air exchange valve component comprises a valve barrel with openings at two ends, and an air exchange valve plate is arranged in the valve barrel; the valve barrel is provided with a second air supplementing valve and a second exhaust valve, the second air supplementing valve can be used for communicating or sealing the centrifugal fan with the outside, and the second exhaust valve can be used for communicating or sealing the first pipeline with the outside; the air exchange valve plate can be used for separating openings at two ends of the valve cylinder; and the second air supplement valve and the second air exhaust valve can be separated.

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