WO2019104782A1 - 一种冲击式速冻机射流喷嘴结构 - Google Patents
一种冲击式速冻机射流喷嘴结构 Download PDFInfo
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- WO2019104782A1 WO2019104782A1 PCT/CN2017/117612 CN2017117612W WO2019104782A1 WO 2019104782 A1 WO2019104782 A1 WO 2019104782A1 CN 2017117612 W CN2017117612 W CN 2017117612W WO 2019104782 A1 WO2019104782 A1 WO 2019104782A1
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- nozzle
- strip
- conveyor belt
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- jet
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/36—Freezing; Subsequent thawing; Cooling
- A23L3/361—Freezing; Subsequent thawing; Cooling the materials being transported through or in the apparatus, with or without shaping, e.g. in form of powder, granules, or flakes
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L3/00—Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs
- A23L3/001—Details of apparatus, e.g. for transport, for loading or unloading manipulation, pressure feed valves
Definitions
- the invention relates to the technical field of food quick freezing, in particular to a jet nozzle structure of an impact quick freezing machine.
- the blasting quick-freezing machine is a common equipment in the field of quick-frozen food processing.
- the impact chiller has become a closely watched object of the quick-freezing machine manufacturer and scientific researcher with its high convective heat transfer coefficient.
- the airflow in the static pressure box of the quick-freezer releases the high-speed airflow through the nozzle structure, which is the key to achieve the impact effect, and the impact effect depends largely on the structure and size of the nozzle structure.
- the nozzle structure of the existing impact type quick-freezing machine is mostly a circular open-hole plate structure. However, such a structure has a problem that the uniformity of the cooling process of the frozen area in the frozen area is low.
- the present invention provides a jet nozzle structure of an impingement quick-freezer, comprising a plurality of V-shaped guide grooves arranged in parallel along the moving direction of the frozen conveyor belt and communicating with the lower end of the V-shaped guide groove.
- the slit nozzle; the V-shaped guide groove comprises two strip-shaped plates disposed obliquely, the longitudinal direction of the strip-shaped plate is in a horizontal direction, the cross section of the V-shaped guide groove is rectangular, and the longitudinal section in the width direction is inverted.
- the slit nozzles comprise two strip-shaped plates arranged vertically in parallel, the longitudinal direction of the strip-shaped plates being horizontal, and two slit nozzles
- the upper ends of the strip plates are respectively connected to the lower ends of the two strip plates of the V-shaped guide groove.
- the slit nozzle is a bevel slit nozzle, which is formed obliquely from the center point of the lower end of the two strip plates of the slit nozzle to the two ends, and the cutting ratio is the height of the cut end of the nozzle and the height of the longitudinal center of the nozzle The ratio, 1 ⁇ ⁇ ⁇ 0.
- the slit nozzle has a length of 1000-2000 mm, a width of 3-10 mm, and a height of 20-40 mm; the distance between the slit nozzle and the conveyor belt below it is 10-60 mm, and the spacing is The shortest vertical distance between the slot nozzle and the conveyor belt.
- the slot nozzle has a length of 1200-1800 mm, a width of 4-7 mm, and a height of 25-35 mm; the slot nozzle has a spacing of 20-50 mm from the conveyor belt below it.
- the slot nozzle has a length of 1500 mm, a width of 5 mm, and a height of 30 mm; the slot nozzle has a distance of 40 mm from the conveyor belt below it.
- Hs when Hs ⁇ 10, 1> ⁇ 0 >0, where Hs is the ratio of the spacing between the slot nozzle and the conveyor belt underneath the slot nozzle, and ⁇ 0 is the critical cutting ratio.
- ⁇ ⁇ 0
- the uniformity of heat exchange in the frozen zone on the conveyor belt of the quick freezer is optimal; the pitch is the shortest vertical distance between the slot nozzle and the conveyor belt.
- ⁇ 0 0.001Hs 4 + 0.0349Hs 3 - 0.4127Hs 2 + 1.8689Hs - 1.9617.
- Hs is the ratio of the distance between the slot nozzle and the conveyor belt below it and the width of the slot nozzle
- ⁇ is the height of the nozzle at both ends of the nozzle and the nozzle
- the ratio of the heights at the longitudinal center which is the shortest vertical distance between the slot nozzle and the conveyor belt.
- the above technical solution provided by the invention can effectively improve the uniformity of the cooling process of the frozen product, improve the large difference in the cooling rate of the frozen product at different positions in the food freezing process, and improve the quality of the frozen product.
- FIG. 1 is a schematic perspective view showing the structure of a jet nozzle of the present invention.
- FIG. 2 is a front plan view showing the structure of a jet nozzle of the present invention.
- FIG 3 is a side plan view showing the structure of a jet nozzle of the present invention.
- Figure 10 is a graph of critical cut ratio distribution.
- the jet nozzle structure of the impact type quick-freezer of the present invention comprises a plurality of V-shaped guide grooves 1 and V which are uniformly arranged in parallel along the moving direction of the frozen conveying belt 3 (the direction indicated by the arrow in FIG. 1).
- the slit nozzle 2 in which the lower end of the type guide groove 1 communicates.
- the V-shaped guide groove 1 comprises two strip-shaped plates which are disposed obliquely opposite to each other, and have a rectangular cross section, an inverted trapezoidal shape in the width direction, and an upper portion of the adjacent two V-shaped guide grooves 1 are connected by a flat plate.
- the slit nozzle 2 includes two strip-shaped plates disposed vertically in parallel, and the upper ends of the two strip-shaped plates of the slit nozzles 2 are respectively connected to the lower ends of the two strip-shaped plates of the V-shaped guide groove 1.
- the slit nozzle is a bevel slit nozzle, which is formed obliquely from the center point of the lower end of the two strip plates of the slit nozzle to the both ends, and the cutting ratio is the height of the cut end of the nozzle and the height of the longitudinal center of the nozzle The ratio, 1 ⁇ ⁇ ⁇ 0.
- the low-temperature air from the evaporator is sucked by the fan of the quick-freezer and then boosted and flows out. After passing through the static pressure tank, it enters the jet nozzle. After being sprayed through the nozzle, it flows out from the outlet of the nozzle structure into the evaporator for heat exchange, and then is again sucked into the fan. The next cycle.
- the above-mentioned jet nozzle structure provided by the present invention can improve the jet impact velocity on the surface of the conveyor belt, thereby increasing the Nu number on the surface of the conveyor belt and strengthening the exchange of the frozen area above the conveyor belt. Heat, thereby increasing the freezing rate of the frozen product.
- the jet nozzle structure provided by the invention can greatly improve the heat exchange uniformity in the width direction of the quick-freezing machine, that is, the freezing rate consistency of the frozen products on both sides of the conveyor belt and the central position can be enhanced, and the uniformity of the frozen product quality can be further improved.
- the length of the slit nozzle 2 is preferably 1000-2000 mm.
- the width is 3-10 mm, the height is 20-40 mm, and the distance H between the slit nozzle 2 and the frozen transfer sheet strip 3 below (the shortest vertical distance between the two) is 10-60 mm.
- the minimum fan energy consumption can be obtained under the condition of a large transfer plate surface Nu number distribution and a good heat transfer uniformity of the transfer plate surface.
- the Nu number is the Nusselt number
- X is the width direction of the conveyor belt.
- ⁇ 0 0.001Hs 4 +0.0349Hs 3 -0.4127Hs 2 +1.8689Hs-1.9617
- the jet nozzle structure of the impact quick-freezer selects a suitable cutting ratio according to the change of the Hs value, can more effectively improve the uniformity of the cooling process of the frozen product, and improve the traditional structure at different positions in the food freezing process. There is a big difference in the cooling rate of frozen products.
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- Health & Medical Sciences (AREA)
- Nutrition Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Freezing, Cooling And Drying Of Foods (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Description
Claims (7)
- 一种冲击式速冻机射流喷嘴结构,其特征在于:包括若干沿冻品传送板带的移动方向均匀平行排列的V型导流槽和与V型导流槽的下端连通的条缝喷嘴;V型导流槽包括相对倾斜设置的两块条形板,所述条形板的长度方向位于水平方向,V型导流槽的横截面为矩形,宽度方向的纵截面为倒梯形,相邻两V型导流槽的上部以平板相连;条缝喷嘴包括相对平行竖直设置的两块条形板,所述条形板的长度方向位于水平方向,条缝喷嘴的两块条形板的上端分别与V型导流槽的两块条形板的下端连接;所述条缝喷嘴为斜切条缝喷嘴,从条缝喷嘴的两块条形板下端的中心点向两端对称斜切形成,切割比Ψ为喷嘴两端被切割高度与喷嘴纵向中心处高度的比值,1≥Ψ≥0。
- 如权利要求1所述的冲击式速冻机射流喷嘴结构,其特征在于:所述条缝喷嘴的长度为1000-2000mm,宽度为3-10mm,高度为20-40mm;条缝喷嘴与其下方的传送板带的间距为10-60mm,所述间距为条缝喷嘴与传送板带之间的最短垂直距离。
- 如权利要求2所述的冲击式速冻机射流喷嘴结构,其特征在于:所述条缝喷嘴的长度为1200-1800mm,宽度为4-7mm,高度为25-35mm;条缝喷嘴与其下方的传送板带的间距为20-50mm。
- 如权利要求3所述的冲击式速冻机射流喷嘴结构,其特征在于:所述条缝喷嘴的长度为1500mm,宽度为5mm,高度为30mm;条缝喷嘴与其下方的传送板带的间距为40mm。
- 如权利要求1所述的冲击式速冻机射流喷嘴结构,其特征在于:当Hs<10时,1>Ψ 0>0,其中Hs为条缝喷嘴与其下方的传送板带的间距与条缝喷嘴的宽度的比值,Ψ 0为临界切割比,当Ψ=Ψ 0时,速冻机传送板带上冻结区域的换热均匀性最佳;所述间距为条缝喷嘴与传送板带之间的最短垂直距离。
- 如权利要求5所述的冲击式速冻机射流喷嘴结构,其特征在于:当Hs<10时,Ψ 0与Hs的关系公式为Ψ 0=0.001Hs 4+0.0349Hs 3-0.4127Hs 2+1.8689Hs-1.9617。
- 如权利要求1所述的冲击式速冻机射流喷嘴结构,其特征在于:当Hs≥10时,Ψ 0=0,其中Hs为条缝喷嘴与其下方的传送板带的间距与条缝喷嘴的宽度的比值,Ψ为喷嘴两端被切割高度与喷嘴纵向中心处高度的比值,所述间距为条缝喷嘴与传送板带之间的最短垂直距离。
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CN201711239274.6A CN107751714A (zh) | 2017-11-30 | 2017-11-30 | 一种冲击式速冻机射流喷嘴结构 |
CN201711239274.6 | 2017-11-30 |
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CN112413997A (zh) * | 2020-11-24 | 2021-02-26 | 安徽中谷食品有限公司 | 一种食品加工用烘培食品降温箱 |
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CN107763939A (zh) * | 2017-11-30 | 2018-03-06 | 上海海洋大学 | 一种速冻机用斜切条缝喷嘴 |
CN110186245A (zh) * | 2019-06-03 | 2019-08-30 | 上海海洋大学 | 速冻机宽度方向上的气流优化方法 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000055526A (ja) * | 1998-08-05 | 2000-02-25 | Hisashi Takeuchi | 冷凍装置及び冷凍方法 |
KR20040082863A (ko) * | 2003-03-20 | 2004-09-30 | 한일냉동기계공업 주식회사 | 터널식 식품냉각 동결장치의 노즐덕트 |
CN201370083Y (zh) * | 2009-03-26 | 2009-12-30 | 郑州亨利制冷设备有限公司 | 一种空气冲击式速冻装置 |
CN201514085U (zh) * | 2009-08-20 | 2010-06-23 | 大连冰山菱设速冻设备有限公司 | 隧道式速冻机 |
CN203771857U (zh) * | 2014-01-22 | 2014-08-13 | 青岛农业大学 | 一种冲击式快速冷冻装置 |
CN107763939A (zh) * | 2017-11-30 | 2018-03-06 | 上海海洋大学 | 一种速冻机用斜切条缝喷嘴 |
CN107763940A (zh) * | 2017-11-30 | 2018-03-06 | 上海海洋大学 | 一种新型速冻机喷嘴 |
CN207702810U (zh) * | 2017-11-30 | 2018-08-07 | 上海海洋大学 | 一种新型速冻机喷嘴结构 |
CN207702809U (zh) * | 2017-11-30 | 2018-08-07 | 上海海洋大学 | 一种速冻机用斜切条缝喷嘴结构 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001120243A (ja) * | 1999-10-29 | 2001-05-08 | Takahashi Kogyo Kk | 食品の連続式急速凍結装置 |
-
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- 2017-11-30 CN CN201711239274.6A patent/CN107751714A/zh active Pending
- 2017-12-21 WO PCT/CN2017/117612 patent/WO2019104782A1/zh active Application Filing
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000055526A (ja) * | 1998-08-05 | 2000-02-25 | Hisashi Takeuchi | 冷凍装置及び冷凍方法 |
KR20040082863A (ko) * | 2003-03-20 | 2004-09-30 | 한일냉동기계공업 주식회사 | 터널식 식품냉각 동결장치의 노즐덕트 |
CN201370083Y (zh) * | 2009-03-26 | 2009-12-30 | 郑州亨利制冷设备有限公司 | 一种空气冲击式速冻装置 |
CN201514085U (zh) * | 2009-08-20 | 2010-06-23 | 大连冰山菱设速冻设备有限公司 | 隧道式速冻机 |
CN203771857U (zh) * | 2014-01-22 | 2014-08-13 | 青岛农业大学 | 一种冲击式快速冷冻装置 |
CN107763939A (zh) * | 2017-11-30 | 2018-03-06 | 上海海洋大学 | 一种速冻机用斜切条缝喷嘴 |
CN107763940A (zh) * | 2017-11-30 | 2018-03-06 | 上海海洋大学 | 一种新型速冻机喷嘴 |
CN207702810U (zh) * | 2017-11-30 | 2018-08-07 | 上海海洋大学 | 一种新型速冻机喷嘴结构 |
CN207702809U (zh) * | 2017-11-30 | 2018-08-07 | 上海海洋大学 | 一种速冻机用斜切条缝喷嘴结构 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112413997A (zh) * | 2020-11-24 | 2021-02-26 | 安徽中谷食品有限公司 | 一种食品加工用烘培食品降温箱 |
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