CN111657348B - Special instant freezer of corn cob - Google Patents
Special instant freezer of corn cob Download PDFInfo
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- CN111657348B CN111657348B CN202010505293.4A CN202010505293A CN111657348B CN 111657348 B CN111657348 B CN 111657348B CN 202010505293 A CN202010505293 A CN 202010505293A CN 111657348 B CN111657348 B CN 111657348B
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- 235000002017 Zea mays subsp mays Nutrition 0.000 title claims abstract description 170
- 240000008042 Zea mays Species 0.000 title claims abstract description 169
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 title claims abstract description 161
- 235000005822 corn Nutrition 0.000 title claims abstract description 161
- 238000001816 cooling Methods 0.000 claims abstract description 40
- 238000005057 refrigeration Methods 0.000 claims abstract description 11
- 238000007710 freezing Methods 0.000 claims description 79
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 39
- 238000003860 storage Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 23
- 230000000694 effects Effects 0.000 abstract description 9
- 238000000926 separation method Methods 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 description 14
- 239000013078 crystal Substances 0.000 description 13
- 230000008014 freezing Effects 0.000 description 9
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 description 8
- 235000009973 maize Nutrition 0.000 description 8
- 230000017525 heat dissipation Effects 0.000 description 4
- 235000015097 nutrients Nutrition 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 3
- 206010033546 Pallor Diseases 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000010257 thawing Methods 0.000 description 2
- 101000608752 Phytolacca americana Lectin-C Proteins 0.000 description 1
- 241000482268 Zea mays subsp. mays Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000000834 fixative Substances 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000011814 protection agent Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 238000009461 vacuum packaging Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23B—PRESERVING, e.g. BY CANNING, MEAT, FISH, EGGS, FRUIT, VEGETABLES, EDIBLE SEEDS; CHEMICAL RIPENING OF FRUIT OR VEGETABLES; THE PRESERVED, RIPENED, OR CANNED PRODUCTS
- A23B9/00—Preservation of edible seeds, e.g. cereals
- A23B9/10—Freezing; Subsequent thawing; Cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D13/00—Stationary devices, e.g. cold-rooms
- F25D13/06—Stationary devices, e.g. cold-rooms with conveyors carrying articles to be cooled through the cooling space
- F25D13/062—Stationary devices, e.g. cold-rooms with conveyors carrying articles to be cooled through the cooling space with refrigerated conveyors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/067—Evaporator fan units
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/80—Food processing, e.g. use of renewable energies or variable speed drives in handling, conveying or stacking
- Y02P60/85—Food storage or conservation, e.g. cooling or drying
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention discloses a special instant freezer for corn cobs, which comprises a conveyor belt and a refrigerating assembly arranged along the length direction of the conveyor belt, wherein a rotary corn cob drainage mechanism is arranged between the conveyor belt and the refrigerating assembly. Utilize refrigeration subassembly to carry out direct quick-freeze to the corn-cob, the separation of unnecessary moisture in the corn-cob is realized to cooperation rotation type corn drainage mechanism, avoid the influence of unnecessary moisture to the corn-cob among the quick-freeze process, adhesion between the corn-cob can be prevented, also the expansion that freezes has been avoided remaining more departments to appear, realize quick-freeze when preserving the corn-cob integrality, and wind-force can carry out deep cooling to the core of corn-cob, avoid the corn-cob to appear at quick-freeze process various too big and cause the problem of spoiling because of inside cooling degree is not enough, guarantee quick-freeze effect's wholeness, and then guaranteed the quality of corn-cob.
Description
Technical Field
The invention relates to the technical field of food processing, in particular to a special instant freezer for corn cobs.
Background
Corn is an economic crop integrating grain, fruit, vegetable and feed. In addition to the direct market of "green corn" for corn ears, rapid processing is required to maintain high sugar content and freshness of corn. The common processing method comprises the steps of timely harvesting, peeling, filament removing, selecting, trimming, grading, cleaning, threshing, blanching, cooling, selecting, quick freezing, screening, packaging and refrigerating. The quick-freezing is used as the key point and the difficult point of the processing process, determines the preservation degree of the flavor of the corn, and is a key ring of the quality of the processed corn.
At present, corn processing generally needs threshing, and the threshing process is easy to cause corn loss and damage, and nutrient loss can be caused in subsequent processing. For example, the publication No. CN108812867A discloses a processing method of quick-frozen corn kernels in Chinese patent literature, which comprises the steps of pretreating raw materials, threshing, blanching, immersing the blanched corn kernels in a prepared color protection liquid for 2-3 min, performing color protection treatment, taking out the corn kernels from the color protection liquid, washing off residual color protection agent on the surface by flowing clear water, cooling to below 15 ℃, rapidly putting the cooled corn kernels into a refrigerator for quick freezing, keeping the temperature below 30 ℃ for quick freezing for 15-20 min, ensuring that the center temperature of the quick-frozen product is below-18 ℃, checking and vacuum packaging to obtain a finished product, and storing at the temperature below-18 ℃. The corn kernels prepared by the method have attractive and glossy appearance, have special soft, fragrant, sticky and sweet mouthfeel of sweet corn, accord with sanitary standards, and are a qualified corn kernel product. However, the method of cleaning the corn kernels after the corn kernels are treated by the color fixative still causes a great loss of nutrients in the corn, and the problem of reduced taste of the corn kernels still exists in the long-term storage process.
Disclosure of Invention
Aiming at the problem that the preservation method of quick-frozen corn kernels is easy to cause corn nutrient loss in the prior art, the invention provides a special quick-freezing machine for corn cobs, which is characterized in that a refrigerating assembly is used for directly quick-freezing corn cobs, and a rotary corn drainage mechanism is matched for draining residual water in the corn cobs, so that the corn kernels on the corn cobs are prevented from being adhered to each other in the quick-freezing process, and meanwhile, nutrient loss in the corn is avoided.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a special frozen machine of corn cob, includes the conveyer belt and follows the refrigeration subassembly that conveyer belt length direction set up, be provided with rotation type corn cob drainage mechanism between conveyer belt and the refrigeration subassembly. The conveyer belt automatic operation carries the cob to get into the work area of refrigeration subassembly, corn cob drainage mechanism rotates the cob through wind-force for the cob is with earlier stage processing to remain in the water between the kernel of corn in rotatory in-process and throw away, realizes the separation of unnecessary moisture in the cob, avoids the influence of unnecessary moisture to the cob in the quick-freeze process, can prevent the adhesion between the kernel of corn, has also avoided remaining water more departments to appear freezing expansion, realizes quick-freeze when preserving the cob integrality, has guaranteed the outward appearance effect of cob simultaneously.
Preferably, the rotary corn cob drainage mechanism comprises a first air chamber and a second air chamber, the first air chamber and the second air chamber are respectively arranged on the upper side and the lower side of the conveyor belt, a unit quick-freezing bin is arranged on the conveyor belt, a first air inlet communicated with the first air chamber and a second air inlet communicated with the second air chamber are arranged on the unit quick-freezing bin, and the first air inlet and the second air inlet are arranged in a staggered mode. The first air chamber is matched with the first air inlet to carry out unilateral air-driven on the corn cobs arranged in the unit quick-freezing bin, and the second air chamber is matched with the second air inlet to realize air-driven on the other side of the corn cobs. The wind directions of the first air inlet and the second air inlet are opposite, are respectively arranged at two sides of the corn cob, are matched to drive the corn cob to rotate along the preset direction, and the wind speeds of the first air chamber and the second air chamber determine the rotating speed of the corn cob. Simultaneously, wind-force can carry out deep cooling to the core of corn cob, avoids the corn cob to appear that the inside and outside difference in temperature is too big and because of the problem that the inside cooling degree is not enough causes the spoil at quick-freeze process various, guarantees quick-freeze effect's wholeness, and then has guaranteed the quality of corn cob.
Preferably, the refrigeration assembly is a variable-temperature refrigeration mechanism and comprises a plurality of evaporators which are arranged along the length direction of the conveyor belt and are sequentially reduced in temperature, and an axial flow fan is arranged on each evaporator and is communicated with the first air chamber and the second air chamber. The axial flow fan is a wind source in the first wind chamber and the second wind chamber, the axial flow fan is matched with low-temperature gas output by the evaporator to realize drainage and quick freezing of the corn cobs, the rotating speed of the corn cobs can be adjusted by changing the flow speed of the axial flow fan, and meanwhile, the air speed also determines the cooling speed of the corn cobs, namely, the faster the flow speed is, the more heat is dissipated in unit time, the faster the corn cobs are cooled; the evaporator with the matched temperature reduced in sequence is arranged through the air speed, so that the corn cobs can pass through the maximum ice crystal generation zone at the temperature of 0 to-5 ℃ as soon as possible, the generation of large ice crystals in corn kernels is reduced as much as possible, and the mouthfeel of the quick-frozen corn after thawing is improved.
Preferably, the unit type quick-freezing bin is cuboid, the first air inlet is arranged at one side, close to the tail end of the conveying belt, of the top of the unit type quick-freezing bin, and the second air inlet is arranged at one side, close to the starting end of the conveying belt, of the bottom of the unit type quick-freezing bin. The first air inlet and the second air inlet are arranged in a staggered mode and drive the corn cobs to rotate clockwise, and the excessive moisture in the corn cobs can be ensured to be discharged.
Preferably, the first air chamber and the second air chamber are symmetrically arranged on the upper side and the lower side of the conveyor belt, the evaporator comprises a drainage section, a quick cooling section and a deep cooling section which are arranged along the conveyor belt, and the temperatures of the evaporators corresponding to the drainage section, the quick cooling section and the deep cooling section are sequentially reduced. The drainage section ensures high rotating speed of the corn cobs through high wind speed, so that most of redundant water is smoothly drained during the rapid rotation of the corn cobs; the rapid cooling section maintains high wind speed, and the temperature of the evaporator of the rapid cooling section is lower than that of the evaporator of the drainage section, so that the corn cob is ensured to pass through a maximum ice crystal generation zone at 0 to-5 ℃ as soon as possible, and the generation of large ice crystals in corn kernels is reduced as much as possible; the high wind speed of the deep cooling section can assist the evaporator with lower temperature to accelerate heat dissipation of the corn cobs, and ensure that the whole corn cobs reach the standard quick-freezing temperature below-18 ℃.
Preferably, exhaust chambers are arranged on two sides of the conveyor belt, and the exhaust chambers are communicated with the front side and the rear side of the unit type quick-freezing bin. The exhaust chamber is used for ensuring that air flow entering the unit type quick-freezing bin from the first air chamber and the second air chamber is smoothly exhausted out of the unit type quick-freezing bin after carrying heat, and the cooling effect is effectively improved.
Preferably, the unit type quick-freezing bin is fixedly connected to the conveyor belt, the top of the unit type quick-freezing bin is of a cover lifting structure, and the tail of the conveyor chain is provided with a storage bin. The tail part of the conveyor belt is of an inner rolling type structure, the conveyor belt continuously moves towards the starting end of the transmission chain to carry out circulation work, the unit quick-freezing bin is still connected with the conveyor belt to wait for the next circulation work after leaving the working area of the refrigerating assembly along with the conveyor belt, and the corn cobs loaded in the unit quick-freezing bin leave the unit quick-freezing bin from the top of the unit quick-freezing bin along with gravity and enter the storage bin. The lifting cover structure ensures that the first air inlet can smoothly intake air, and the unit quick-freezing bin can smoothly discharge the corn cobs after the quick-freezing bin leaves the refrigerating assembly.
Preferably, a water-absorbing layer is arranged on the inner wall of the unit type quick-freezing bin. The water absorption layer is used for absorbing redundant water thrown out in the rotation process of the corn cobs, and the situation that the corn cobs are frozen in the inner wall due to frosting in the unit type quick-freezing bin is avoided, so that the quick-freezing processing flow of the corn cobs is influenced.
Preferably, the water absorbing layer is an elastic member. The water absorption layer is used for buffering and protecting the corn cob through the elastic structure of the water absorption layer while avoiding the formation of the ice layer inside the unit type quick-freezing bin, so that the phenomenon that the corn cob collides with the inner wall of the unit type quick-freezing bin to be damaged in the rotation process is avoided, and the overall quality of the corn cob is influenced.
Therefore, the invention has the following beneficial effects: (1) The corn cobs are directly quick-frozen by utilizing the refrigerating assembly, and residual water in the corn cobs is discharged by matching with the rotary corn drainage mechanism, so that the separation of redundant water in the corn cobs is realized, the influence of the redundant water on the corn cobs in the quick-freezing process is avoided, the adhesion between corn kernels is prevented, the icing expansion at more positions of the residual water is avoided, the integrity of the corn cobs is saved, the quick-freezing is realized, and the appearance effect of the corn cobs is ensured; (2) The wind directions of the first air inlet and the second air inlet are opposite, are respectively arranged at two sides of the corn cob, are matched with each other to realize the driving of the corn cob, so that the corn cob rotates along a preset direction, and the wind speeds of the first air chamber and the second air chamber determine the rotating speed of the corn cob; (3) The core of the corn cob can be deeply cooled by wind power, so that the problems that the temperature difference between the inside and the outside is overlarge and the corn cob is spoiled due to insufficient cooling degree in the quick-freezing process are avoided, the integrity of the quick-freezing effect is ensured, and the quality of the corn cob is further ensured; (4) The axial flow fan is matched with low-temperature gas output by the evaporator to realize the drainage and quick freezing of the corn cobs, the rotating speed of the corn cobs can be adjusted by changing the flow speed of the axial flow fan, and meanwhile, the air speed also determines the cooling speed of the corn cobs, namely, the faster the flow speed is, the more heat is dissipated in unit time, the faster the corn cobs are cooled; (5) The water draining section ensures high rotating speed of the corn cob through high wind speed, so that most of redundant water is smoothly drained during the rapid rotation of the corn cob; the temperature of the evaporator of the quick cooling section is lower than that of the evaporator of the drainage section, so that the corn cob is ensured to pass through a maximum ice crystal generation zone at 0 to-5 ℃ as soon as possible, and the generation of large ice crystals in corn kernels is reduced as much as possible; the deep cooling section can assist the evaporator with lower temperature to accelerate heat dissipation of the corn cob, so that the whole corn cob can reach the standard quick-freezing temperature below-18 ℃; (6) The water absorption layer is used for buffering and protecting the corn cob through the elastic structure of the water absorption layer while avoiding the formation of the ice layer inside the unit type quick-freezing bin, so that the corn cob is prevented from damaging the inner wall of the unit type quick-freezing bin in the rotation process, and the overall quality of the corn cob is prevented from being influenced.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an enlarged view at a in fig. 1.
In the figure: 1. the corn cob quick-freezing machine comprises a conveying belt, 2, a refrigerating assembly, 201, a water draining section, 202, a quick-cooling section, 203, a deep-cooling section, 21, an evaporator, 22, an axial flow fan, 3, a rotary corn cob water draining mechanism, 31, a first air chamber, 311, a first air inlet, 32, a second air chamber, 321, a second air inlet, 4, a unit quick-freezing bin, 5, an exhaust chamber, 6, a storage bin, 8, a grid conveying belt, 9 and corn cobs.
Description of the embodiments
The invention is further described below with reference to the drawings and detailed description. Examples of the embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements throughout or elements having like or similar functionality. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "center," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Example 1
As shown in figures 1 and 2, the special instant freezer for the corn cobs comprises a conveyor belt 1 and a refrigerating assembly 2 arranged along the length direction of the conveyor belt, wherein a rotary corn cob drainage mechanism 3 is arranged between the conveyor belt and the refrigerating assembly. The conveyer belt automatic operation carries the work area that the maize cob 9 got into refrigeration subassembly, and maize cob drainage mechanism rotates the maize cob through wind-force for the maize cob is with earlier stage processing and is kept in the water throwing away between the kernel of corn in rotatory in-process, realizes the separation of unnecessary moisture in the maize cob, avoids the influence of unnecessary moisture to the maize cob in the quick-freeze process, can prevent the adhesion between the kernel of corn, has also avoided remaining water more departments to appear freezing expansion, realizes quick-freezing when preserving the maize cob integrality, has guaranteed the outward appearance effect of maize cob simultaneously. In the embodiment, the refrigerating assembly is provided with a PL C controller, so that the working rotating speed of the axial flow fan can be controlled. The instant frozen products in this example are classified into two types, one is whole corn cob with a length of 14-20cm after screening, and the other is corn cob with a length of 8cm or less after cutting. According to different products, the working rotating speed of the axial flow fan can be correspondingly adjusted.
The rotary corn cob drainage mechanism comprises a first air chamber 31 and a second air chamber 32, the first air chamber and the second air chamber are respectively arranged on the upper side and the lower side of a conveyor belt, a unit type quick-freezing bin is arranged on the conveyor belt, a first air inlet 311 communicated with the first air chamber and a second air inlet 321 communicated with the second air chamber are arranged on the unit type quick-freezing bin, and the first air inlet and the second air inlet are arranged in a staggered mode. The first air chamber is matched with the first air inlet to carry out unilateral air-driven on the corn cobs arranged in the unit quick-freezing bin, and the second air chamber is matched with the second air inlet to realize air-driven on the other side of the corn cobs. The wind direction of the first air inlet is opposite to the wind direction of the second air inlet, the first air inlet and the second air inlet are respectively arranged at two sides of the corn cob, the corn cob is driven by cooperation, the corn cob is enabled to rotate along a preset direction, and the rotating speed of the corn cob is determined by the wind speeds of the first air chamber and the second air chamber. Simultaneously, wind-force can carry out deep cooling to the core of corn cob, avoids the corn cob to appear that the inside and outside difference in temperature is too big and because of the problem that the inside cooling degree is not enough causes the spoil at quick-freeze process various, guarantees quick-freeze effect's wholeness, and then has guaranteed the quality of corn cob.
The refrigeration assembly is a variable-temperature refrigeration mechanism and comprises a plurality of evaporators 21 which are arranged along the length direction of the conveyor belt and are sequentially reduced in temperature, and axial flow fans 22 are arranged on the evaporators and are communicated with the first air chamber and the second air chamber. The axial flow fan is a wind source in the first wind chamber and the second wind chamber, the axial flow fan is matched with low-temperature gas output by the evaporator to realize drainage and quick freezing of the corn cob, the rotating speed of the corn cob can be adjusted by changing the flow speed of the axial flow fan, and meanwhile, the air speed also determines the cooling speed of the corn cob, namely, the faster the flow speed is, the more heat is dissipated in unit time, the faster the corn cob is cooled; the evaporator with the matched temperature sequentially reduced is arranged through the wind speed, so that the corn cob passes through the maximum ice crystal generation zone at 0 to-5 ℃ as soon as possible, the generation of large ice crystals in corn kernels is reduced as much as possible, most of water in the corn is changed into tiny ice crystals below 100 microns, the central temperature reaches-18 ℃, the original color, aroma, taste and nutritional value of the corn are maintained to the greatest extent, and the mouthfeel of the quick-frozen corn after thawing is improved.
The first air chamber and the second air chamber are symmetrically arranged on the upper side and the lower side of the conveyor belt, the evaporator comprises a drainage section 201, a quick cooling section 202 and a deep cooling section 203 which are arranged along the conveyor belt, and the temperatures of the evaporators corresponding to the drainage section, the quick cooling section and the deep cooling section are sequentially reduced. The high rotating speed of the corn cob is ensured by the high wind speed in the water draining section, so that most of redundant water is smoothly drained in the rapid rotation of the corn cob, the temperature of the evaporator is-30 to-35 ℃ and the temperature of cold wind is-26 to-30 ℃; the rapid cooling section maintains high wind speed, the temperature of the evaporator of the rapid cooling section is lower than that of the evaporator of the drainage section, so that the corn cob is ensured to pass through a maximum ice crystal generation zone at 0 to-5 ℃ as soon as possible, the generation of large ice crystals in corn kernels is reduced as much as possible, the temperature of the evaporator at the stage is-35 to-40 ℃, and the temperature of cold air is-30 to-35 ℃; the evaporator with low auxiliary temperature can accelerate heat dissipation of the corn cob due to the high wind speed of the deep cooling section, so that the whole corn cob can reach the standard quick-freezing temperature below-18 ℃, the temperature of the evaporator is-40 to-45 ℃, and the temperature of cold wind is-35 to-40 ℃. In the embodiment, for the whole corn cob with larger dead weight, the air inlet speed of the first air inlet and the second air inlet is maintained to be 15-18 m/s; for the corn cob sections, the air inlet speed is 12-16 m/s. Ensuring that the product rotates according to the wind direction.
The unit type quick-freezing bin 4 is cuboid, the first air inlet is arranged on one side, close to the tail end of the conveying belt, of the top of the unit type quick-freezing bin, and the second air inlet is arranged on one side, close to the starting end of the conveying belt, of the bottom of the unit type quick-freezing bin. The first air inlet and the second air inlet are arranged in a staggered mode and drive the corn cobs to rotate clockwise, and the fact that redundant moisture in the corn cobs is discharged can be guaranteed.
The two sides of the conveyor belt are provided with exhaust chambers 5 which are communicated with the front side and the rear side of the unit type quick-freezing bin. The exhaust chamber is used for ensuring that air flow entering the unit type quick-freezing bin from the first air chamber and the second air chamber is smoothly exhausted out of the unit type quick-freezing bin after carrying heat, and the cooling effect is effectively improved.
The unit type quick-freezing bin is fixedly connected to the conveyor belt, the top of the unit type quick-freezing bin is of a cover lifting structure, and the tail of the conveyor chain is provided with a storage bin 6. The tail part of the conveyor belt is of an inner rolling type structure, the conveyor belt continuously moves towards the starting end of the transmission chain to carry out circulation work, the unit quick-freezing bin is still connected with the conveyor belt to wait for the next circulation work after leaving the working area of the refrigerating assembly along with the conveyor belt, and the corn cobs loaded in the unit quick-freezing bin leave the unit quick-freezing bin from the top of the unit quick-freezing bin along with gravity and enter the storage bin. The lifting cover structure ensures that the first air inlet can smoothly intake air, and the unit quick-freezing bin can smoothly discharge the corn cobs after the quick-freezing bin leaves the refrigerating assembly.
The inner wall of the unit type quick-freezing bin is provided with a water absorption layer. The water absorption layer is used for absorbing redundant water thrown out in the rotation process of the corn cobs, so that the situation that the corn cobs are frozen on the inner wall due to frosting in the unit type quick-freezing bin is avoided, and the quick-freezing processing flow of the corn cobs is influenced.
The water-absorbing layer is an elastic piece. The water absorption layer is used for buffering and protecting the corn cob through the elastic structure of the water absorption layer while avoiding the formation of the ice layer inside the unit type quick-freezing bin, so that the corn cob is prevented from damaging the inner wall of the unit type quick-freezing bin in the rotation process, and the overall quality of the corn cob is prevented from being influenced. In the embodiment, the water absorption layer is made of PU foaming sponge, the porosity is 85%, the water absorption rate is 800%, the thickness of the water absorption layer is 5cm, the PU foaming sponge can still keep a good elastic state at-40 ℃, the water absorption is strong, the corn cob can be buffered and protected, and meanwhile, the excessive water is absorbed.
The special instant freezer for corn cobs disclosed by the invention has the working process that a product to be processed is sent into a unit type instant freezer through a grid conveyor belt 8, the temperature of the product to be processed is 15 ℃, and the unit type instant freezer advances along with the conveyor belt and enters a working area of a refrigerating assembly to start instant freezing. The refrigerating capacity of the evaporators is 1460kw, each evaporator is provided with three axial flow fans, and cold air is sent into each unit type quick-freezing bin from the first air chamber and the second air chamber through the cooperation of the three axial flow fans. The corn in the unit type quick-freezing bin rotates by means of cold air blown out from a first air inlet and a second air inlet which are arranged on two sides of the unit type quick-freezing bin in a staggered manner under the protection of a water absorption layer, meanwhile, superfluous water is thrown out, and along with the advancing of the unit type quick-freezing bin, the corn passes through an air exhaust section, a quick cooling section and a deep cooling section respectively, the temperature of an evaporator of the air exhaust section is-30 to-35 ℃, the temperature of the cold air is-26 to-30 ℃, and the superfluous water is basically thrown out; the rapid cooling section maintains high wind speed, the temperature of the evaporator is minus 35 to minus 40 ℃, the temperature of the cold wind is minus 30 to minus 35 ℃, the corn cob is ensured to pass through a maximum ice crystal generation zone of 0 to minus 5 ℃ as soon as possible, and the generation of large ice crystals in corn kernels is reduced as much as possible; the evaporator temperature of the deep cooling section is-40 to-45 ℃, the cold air temperature is-35 to-40 ℃, the heat dissipation of the corn cobs is accelerated in an auxiliary way, and the corn cobs are ensured to reach the standard quick-freezing temperature below-18 ℃ as a whole. And (3) the product moves forward at a constant speed, the temperature of the product is rapidly reduced to-18 ℃ within 2-4min, quick-freezing of the product is completed, and the product enters a storage bin arranged at the tail of the conveyor belt.
In addition to the above embodiments, the technical features of the present invention may be rearranged and combined within the scope of the claims and the disclosure of the present invention to form new embodiments, which may be realized by those skilled in the art without inventive effort, and thus, embodiments of the present invention not described in detail should be considered as embodiments of the present invention within the scope of the protection of the present invention.
Claims (5)
1. The special instant freezer for the corn cobs is characterized by comprising a conveyor belt (1) and a refrigerating assembly (2) arranged along the length direction of the conveyor belt (1), wherein a rotary corn cob drainage mechanism (3) is arranged between the conveyor belt (1) and the refrigerating assembly (2);
the rotary corn cob drainage mechanism (3) comprises a first air chamber (31) and a second air chamber (32), a unit type quick-freezing bin (4) is arranged on the conveyor belt (1), a first air inlet (311) communicated with the first air chamber (31) and a second air inlet (321) communicated with the second air chamber (32) are arranged on the unit type quick-freezing bin (4), and the first air inlet (311) and the second air inlet (321) are arranged in a staggered mode;
the wind direction of the first air inlet (311) is opposite to the wind direction of the second air inlet (321), and the first air inlet and the second air inlet are respectively arranged at two sides of the corn cob to drive the corn cob in a matching way;
the first air chamber (31) and the second air chamber (32) are respectively arranged at the upper side and the lower side of the conveyor belt (1);
the refrigeration assembly (2) is a variable-temperature refrigeration mechanism and comprises a plurality of evaporators (21) which are arranged along the length direction of the conveyor belt (1) and are sequentially reduced in temperature, an axial flow fan (22) is arranged on each evaporator (21), and the axial flow fan (22) is communicated with a first air chamber (31) and a second air chamber (32);
the first air chamber (31) and the second air chamber (32) are symmetrically arranged on the upper side and the lower side of the conveyor belt (1), the evaporator (21) comprises a drainage section (201), a quick cooling section (202) and a deep cooling section (203) which are arranged along the conveyor belt (1), and the temperatures of the evaporators (21) corresponding to the drainage section (201), the quick cooling section (202) and the deep cooling section (203) are sequentially reduced;
the unit type quick-freezing bin (4) is fixedly connected to the conveying belt (1), the top of the unit type quick-freezing bin (4) is of a cover-lifting structure, and the tail of the conveying belt is provided with a storage bin (6).
2. The special instant freezer for corn cobs according to claim 1, wherein the unit type instant freezer (4) is a cuboid, the first air inlet (311) is arranged at one side of the top of the unit type instant freezer (4) near the tail end of the conveyor belt (1), and the second air inlet (321) is arranged at one side of the bottom of the unit type instant freezer (4) near the start end of the conveyor belt (1).
3. The special instant freezer for corn cobs according to claim 1 or 2, wherein exhaust chambers (5) are arranged on two sides of the conveyor belt (1), and the exhaust chambers (5) are communicated with the front side and the rear side of the unit type instant freezer (4).
4. The special instant freezer for corn cobs as claimed in claim 1, wherein a water-absorbing layer is arranged on the inner wall of the unit type instant freezer (4).
5. The instant freezer for corn cob of claim 4 wherein said water absorbing layer is an elastic member.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010505293.4A CN111657348B (en) | 2020-06-05 | 2020-06-05 | Special instant freezer of corn cob |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010505293.4A CN111657348B (en) | 2020-06-05 | 2020-06-05 | Special instant freezer of corn cob |
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| CN111657348B true CN111657348B (en) | 2023-10-31 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102058139A (en) * | 2010-11-29 | 2011-05-18 | 天津商业大学 | Three-temperature section food quick freezing method and three-temperature section food quick freezer |
| CN205947059U (en) * | 2016-06-07 | 2017-02-15 | 上虞冠峰食品机械有限公司 | Equal fan of tunnel frozen machine constructs |
| WO2017211034A1 (en) * | 2016-06-08 | 2017-12-14 | 南通四方冷链装备股份有限公司 | Spiral freezer |
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2020
- 2020-06-05 CN CN202010505293.4A patent/CN111657348B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102058139A (en) * | 2010-11-29 | 2011-05-18 | 天津商业大学 | Three-temperature section food quick freezing method and three-temperature section food quick freezer |
| CN205947059U (en) * | 2016-06-07 | 2017-02-15 | 上虞冠峰食品机械有限公司 | Equal fan of tunnel frozen machine constructs |
| WO2017211034A1 (en) * | 2016-06-08 | 2017-12-14 | 南通四方冷链装备股份有限公司 | Spiral freezer |
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| CN111657348A (en) | 2020-09-15 |
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