WO2019104783A1 - 一种冲击式速冻机圆形射流喷嘴结构 - Google Patents

一种冲击式速冻机圆形射流喷嘴结构 Download PDF

Info

Publication number
WO2019104783A1
WO2019104783A1 PCT/CN2017/117613 CN2017117613W WO2019104783A1 WO 2019104783 A1 WO2019104783 A1 WO 2019104783A1 CN 2017117613 W CN2017117613 W CN 2017117613W WO 2019104783 A1 WO2019104783 A1 WO 2019104783A1
Authority
WO
WIPO (PCT)
Prior art keywords
nozzle
circular
height
guiding groove
opening
Prior art date
Application number
PCT/CN2017/117613
Other languages
English (en)
French (fr)
Inventor
谢晶
李文俊
王金峰
柳雨嫣
Original Assignee
上海海洋大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海海洋大学 filed Critical 上海海洋大学
Priority to JP2018567869A priority Critical patent/JP2020504595A/ja
Priority to US16/236,391 priority patent/US20190170424A1/en
Publication of WO2019104783A1 publication Critical patent/WO2019104783A1/zh

Links

Images

Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features

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 perforated plate structure. However, such a structure has a problem that the freezing rate of the frozen product in the frozen region is low and the uniformity of the cooling process is low.
  • the present invention provides a structure of a jet nozzle of an impact type quick-freezer, comprising an orifice plate, a flow guiding groove and a nozzle, wherein the orifice plate is uniformly arranged with a plurality of circular openings;
  • the guiding groove is a hollow inverted truncated cone shape including an upper end opening and a lower end opening, the upper end opening of the guiding groove is connected with the circular opening, the lower end opening of the guiding groove is connected to the inlet of the nozzle, the nozzle is hollow cylindrical; adjacent two circular openings
  • the spacing is 40-100mm, the diameter of the circular opening is 30-80mm, the height of the guiding groove is 20-60mm, the inner diameter of the nozzle is 6-15mm, the height of the nozzle is 20-40mm, and the lower end of the nozzle and the frozen conveying plate below it
  • the vertical distance between the strips is 10-100 mm, and the spacing between the adjacent two circular openings is the distance between the centers of the two circular holes.
  • the spacing between adjacent two circular openings is 50-80 mm
  • the diameter of the circular opening is 40-60 mm
  • the height of the guiding groove is 30-50 mm
  • the inner diameter of the nozzle is 8-12 mm
  • the nozzle height For a 25-35 mm, the vertical distance between the lower end of the nozzle and the frozen conveyor belt below it is 20-60 mm.
  • the spacing between adjacent two circular openings is 60 mm
  • the diameter of the circular opening is 50 mm
  • the height of the guiding groove is 40 mm
  • the inner diameter of the nozzle is 10 mm
  • the height of the nozzle is 30 mm
  • the lower end of the nozzle is below
  • the vertical distance between the frozen conveyor belts is 50 mm.
  • the above technical solution provided by the invention can effectively improve the freezing rate of the frozen product and improve the uniformity of the cooling process of the frozen product, and improve the large difference of the cooling rate of the frozen product in different positions of the traditional structure in the food freezing process, and improve Frozen product quality.
  • FIG. 1 is a schematic perspective view showing the structure of a jet nozzle of the present invention.
  • the jet nozzle structure of the impact type quick freezer of the present invention comprises an orifice plate 1, a flow guiding groove 3 and a nozzle 4.
  • the orifice plate 1 is uniformly arranged with a plurality of circular openings 2, and the guide groove 3 is a hollow inverted truncated cone shape including an upper end opening and a lower end opening, and the upper end opening of the guiding groove 3 is connected with the circular opening 2, and the guiding groove
  • the lower end opening of 3 is connected to the inlet of the nozzle 4, which is hollow cylindrical.
  • 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 invention can greatly improve the heat exchange intensity of the surface of the conveyor belt, increase the freezing rate of the frozen product, and at the same time, the speed of the nozzle outlet is large.
  • the improvement of the flow in the frozen area improves the uniformity of the cooling process of the frozen product, thus improving the quality of the frozen product.
  • the heat transfer uniformity of the surface of the conveyor belt is improved under the condition of minimizing the energy consumption of the fan and increasing the heat exchange in the freezing zone.
  • the diameter of the circular opening 2 is 30-80mm
  • the height of the guiding groove 3 is 20-60mm
  • the inner diameter of the nozzle 4 is 6-15mm
  • the height is 20-40mm
  • the distance between the conveyor belts 5 is 10-100 mm
  • the spacing between the adjacent two circular openings is the distance between the centers of the two circular holes.
  • the spacing between two adjacent circular openings 2 is 50-80 mm, the diameter of the circular opening 2 is 40-60 mm, the height of the guiding groove 3 is 30-50 mm, and the inner diameter of the nozzle 4 is 8- 12mm, the height is 25-35mm, when the distance between the lower end of the nozzle 4 and the frozen conveying belt 5 below it is 20-60mm, better effect can be obtained, wherein the best value is: two adjacent circular openings
  • the spacing of the holes 2 is 60 mm
  • the diameter of the circular opening 2 is 50 mm
  • the height of the guiding groove 3 is 40 mm
  • the inner diameter of the nozzle 4 is 10 mm
  • the height is 30 mm
  • the lower end of the nozzle 4 and the frozen conveying belt 5 below it The distance between them is 50mm.
  • the preferred principle is based on the combination of heat transfer intensity in the frozen zone (ie, the number of Nu numbers on the surface of the heat transfer strip) and heat transfer uniformity (ie, the difference distribution of the Nu number) and the

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Freezing, Cooling And Drying Of Foods (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Nozzles (AREA)

Abstract

一种冲击式速冻机圆形射流喷嘴结构，包括孔板（1）、导流槽（3）和喷嘴（4），所述孔板上顺排均布若干圆形开孔（2）；所述导流槽为包括上端开口和下端开口的中空倒圆锥台形，导流槽的上端开口与圆形开孔连接，导流槽的下端开口连接喷嘴的入口，喷嘴为中空圆柱形；相邻两圆形开孔的间距为40-100mm，圆形开孔的直径为30-80mm，导流槽的高度为20-60mm，喷嘴内径为6-15mm，喷嘴高度为20-40mm，喷嘴下端与其下方的冻品传送板带之间的垂直距离为10-100mm。上述结构可以有效地提高冻品降温过程的均匀性，改善传统结构在食品冷冻加工过程中不同位置处冻品降温速率存在的较大差异性，提高冻品质量。

Description

一种冲击式速冻机圆形射流喷嘴结构 技术领域
本发明涉及食品速冻技术领域，特别是涉及一种冲击式速冻机射流喷嘴结构。
背景技术
鼓风速冻机是速冻食品加工领域的常用设备，其中的冲击式速冻机以其较高的对流换热系数越来越成为速冻机制造厂家及科研工作者密切关注的对象。速冻机静压箱内的气流通过喷嘴结构释放出高速气流是实现冲击效果的关键，而冲击效果在很大程度上取决于喷嘴结构的结构与尺寸。现有冲击式速冻机的喷嘴结构多为圆形开孔板式结构，然而此种结构存在冻结区域冻品冻结速率低和降温过程均匀性较低的问题。
发明内容
本发明的目的至少在于提供一种能够提高冻结区域冻品冻结速率低和降温过程均匀性的冲击式速冻机射流喷嘴结构。
为实现上述目，本发明提供了一种冲击式速冻机射流喷嘴结构，包括孔板、导流槽和喷嘴，所述孔板上顺排均布若干圆形开孔；所述导流槽为包括上端开口和下端开口的中空倒圆锥台形，导流槽的上端开口与圆形开孔连接，导流槽的下端开口连接喷嘴的入口，喷嘴为中空圆柱形；相邻两圆形开孔的间距为40-100mm，圆形开孔的直径为30-80mm，导流槽的高度为20-60mm，喷嘴内径为6-15mm，喷嘴高度为20-40mm，喷嘴下端与其下方的冻品传送板带之间的垂直距离为10-100mm，所述的相邻两圆形开孔的间距为两个圆形孔中心之间的距离。
在一个实施方式中，相邻两圆形开孔的间距为50-80mm，圆形开孔的直径为40-60mm，导流槽的高度为30-50mm，喷嘴内径为8-12mm，喷嘴高度为25-35mm，喷嘴下端与其下方的冻品传送板带之间的垂直距离为20-60mm。
在一个实施方式中，相邻两圆形开孔的间距为60mm，圆形开孔的直径为50mm，导流槽的高度为40mm，喷嘴内径为10mm，喷嘴高度为30mm，喷嘴下端与其下方的冻品传送板带之间的垂直距离为50mm。
本发明提供的上述技术方案可以有效地提高冻品的冻结速率和改善冻品降温过程的均匀性，改善传统结构在食品冷冻加工过程中不同位置处冻品降温速率存在的较大差异性，提高冻品质量。
附图说明
图1为本发明射流喷嘴结构的立体结构示意图。
具体实施方式
下面结合附图，以具体实施例为例，详细说明本发明的实施方式。
如图1所示，本发明冲击式速冻机射流喷嘴结构包括孔板1、导流槽3和喷嘴4。孔板1上顺排均布若干圆形开孔2，导流槽3为包括上端开口和下端开口的中空倒圆锥台形，导流槽3的上端开口与圆形开孔2连接，导流槽3的下端开口连接喷嘴4的入口，喷嘴4为中空圆柱形。来自蒸发器的低温空气被速冻机的风机吸入后升压流出，经过静压箱后进入射流喷嘴，在经过喷嘴喷射后从喷嘴结构的出口流出进入蒸发器进行换热，然后再次被风机吸入进入下一个循环。
和传统的圆形开孔板式结构相比较，采用本发明提供的上述射流喷嘴结构，能够大幅提高传送板带表面的换热强度，提高冻品的冻结速率，同时由于喷嘴出口的速度有很大的提高，改善了冻结区域内的流动，从而改善了冻品降温过程的均匀性，因此提高了冻品质量。
综合考虑了换热效果和风机能耗，基于尽量降低风机能耗和增大冻结区域换热的条件下提升传送板带表面的换热均匀性，优选相邻两圆形开孔2的间距为40-100mm，圆形开孔2的直径为30-80mm，导流槽3的高度为20-60mm；喷嘴4的内径为6-15mm，高度为20-40mm，喷嘴4下端与其下方的冻品传送板带5之间的距离为10-100mm，所述的相邻两圆形开孔的间距为两个圆形孔中心之间的距离。
进一步的研究表明，相邻两圆形开孔2的间距为50-80mm，圆形开孔2的直径为40-60mm，导流槽3的高度为30-50mm，喷嘴4的内径为8-12mm，高度为25-35mm，喷嘴4下端与其下方的冻品传送板带5之间的距离为20-60mm时，可获得更好的效果，其中最佳取值为：相邻两圆形开孔2的间距为60mm，圆形开孔2的直径为50mm，导流槽3的高度为40mm，喷嘴4的内径为10mm，高度为30mm，喷嘴4下端与其下方的冻品传送板带5之间的距离为50mm。优选原则是根据冻结区域内的换热强度(即传热板带表面的Nu数的大小)和换热均匀性(即Nu数的极差分布)以及速冻机的风机能耗做出的综合选择标准。
上述实施例仅例示性说明本发明的原理及其功效，而非用于限制本发明。任何熟悉此技术的人士皆可在不违背本发明的精神及范畴下，对上述实施例进行修饰或改变。因此，举凡所属技术领域中具有通常知识者在未脱离本发明所揭示的精神与技术思想下所完成的一切等效修饰或改变，仍应由本发明的权利要求所涵盖。

Claims (3)

  1. 一种冲击式速冻机圆形射流喷嘴结构，包括孔板，所述孔板上顺排均布若干圆形开孔，其特征在于：
    所述射流喷嘴结构还包括导流槽和喷嘴；
    所述导流槽为包括上端开口和下端开口的中空倒圆锥台形，导流槽的上端开口与圆形开孔连接，导流槽的下端开口连接喷嘴的入口，喷嘴为中空圆柱形；
    相邻两圆形开孔的间距为40-100mm，圆形开孔的直径为30-80mm，导流槽的高度为20-60mm，喷嘴内径为6-15mm，喷嘴高度为20-40mm，喷嘴下端与其下方的冻品传送板带之间的垂直距离为10-100mm，所述的相邻两圆形开孔的间距为两个圆形孔中心之间的距离。
  2. 如权利要求1所述的冲击式速冻机圆形射流喷嘴结构，其特征在于：
    相邻两圆形开孔的间距为50-80mm，圆形开孔的直径为40-60mm，导流槽的高度为30-50mm，喷嘴内径为8-12mm，喷嘴高度为25-35mm，喷嘴下端与其下方的冻品传送板带之间的垂直距离为20-60mm。
  3. 如权利要求2所述的冲击式速冻机圆形射流喷嘴结构，其特征在于：
    相邻两圆形开孔的间距为60mm，圆形开孔的直径为50mm，导流槽的高度为40mm，喷嘴内径为10mm，喷嘴高度为30mm，喷嘴下端与其下方的冻品传送板带之间的垂直距离为50mm。
PCT/CN2017/117613 2017-12-01 2017-12-21 一种冲击式速冻机圆形射流喷嘴结构 WO2019104783A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2018567869A JP2020504595A (ja) 2017-12-01 2017-12-21 衝撃型急速冷凍装置の円形射流ノズル構造
US16/236,391 US20190170424A1 (en) 2017-12-01 2018-12-29 Jet nozzle structure of impact-type freezer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201711246827.0A CN107763942A (zh) 2017-12-01 2017-12-01 一种冲击式速冻机圆形射流喷嘴结构
CN201711246827.0 2017-12-01

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US16/236,391 Continuation US20190170424A1 (en) 2017-12-01 2018-12-29 Jet nozzle structure of impact-type freezer

Publications (1)

Publication Number Publication Date
WO2019104783A1 true WO2019104783A1 (zh) 2019-06-06

Family

ID=61276509

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/117613 WO2019104783A1 (zh) 2017-12-01 2017-12-21 一种冲击式速冻机圆形射流喷嘴结构

Country Status (3)

Country Link
JP (1) JP2020504595A (zh)
CN (1) CN107763942A (zh)
WO (1) WO2019104783A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110895075A (zh) * 2019-12-10 2020-03-20 上海海洋大学 一种速冻机用喷嘴
CN112539600B (zh) * 2020-12-24 2022-08-19 澳必福(洪湖)食品有限公司 一种牛肉加工流态化速冻设备
CN113390222B (zh) * 2021-08-17 2021-10-29 南通宝雪冷冻设备有限公司 一种避免食品粘结的均温型流态化速冻机喷嘴

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4397158A (en) * 1980-04-23 1983-08-09 Drabert Sohne Apparatus for treating materials in the form of continuous lengths
CN1253731A (zh) * 1998-08-10 2000-05-24 普拉塞尔技术有限公司 冲击式冷却器
CN1257573A (zh) * 1997-04-25 2000-06-21 弗里戈斯堪迪亚设备公司 表面冷冻的方法和装置
JP2007278586A (ja) * 2006-04-06 2007-10-25 Toyo Eng Works Ltd 冷却・冷凍装置および同装置における冷風の吹き出し風速の設定方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3053545B2 (ja) * 1995-03-20 2000-06-19 株式会社東洋製作所 連続凍結装置
JP2007024364A (ja) * 2005-07-14 2007-02-01 Takahashi Kogyo Kk 連続式急速凍結装置
EP2085489A1 (en) * 2008-02-02 2009-08-05 Novaltec Sàrl Fluid microjet system
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
KR101693634B1 (ko) * 2010-06-30 2017-01-06 마에카와 매뉴팩쳐링 캄파니 리미티드 냉기 분사 기구
CN102735008A (zh) * 2011-04-08 2012-10-17 郑州亨利制冷设备有限公司 一种速冻机喷射风道
CN202238955U (zh) * 2011-07-29 2012-05-30 宝山钢铁股份有限公司 一种用于实现喷嘴水平相对位置控制的结构
CN202229503U (zh) * 2011-08-16 2012-05-23 吴家伟 一种适用于速冻设备的多排孔冲动喷射式布风装置
CN103658204B (zh) * 2012-09-25 2016-06-22 宝山钢铁股份有限公司 一种射流清洗喷嘴的布置方法
CN103540723B (zh) * 2013-10-25 2014-12-31 中国农业大学 一种射流阵列参数可调的新型射流淬火冷却装置
CN207702813U (zh) * 2017-12-01 2018-08-07 上海海洋大学 一种冲击式速冻机圆形射流喷嘴

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4397158A (en) * 1980-04-23 1983-08-09 Drabert Sohne Apparatus for treating materials in the form of continuous lengths
CN1257573A (zh) * 1997-04-25 2000-06-21 弗里戈斯堪迪亚设备公司 表面冷冻的方法和装置
CN1253731A (zh) * 1998-08-10 2000-05-24 普拉塞尔技术有限公司 冲击式冷却器
JP2007278586A (ja) * 2006-04-06 2007-10-25 Toyo Eng Works Ltd 冷却・冷凍装置および同装置における冷風の吹き出し風速の設定方法

Also Published As

Publication number Publication date
CN107763942A (zh) 2018-03-06
JP2020504595A (ja) 2020-02-13

Similar Documents

Publication Publication Date Title
WO2019104783A1 (zh) 一种冲击式速冻机圆形射流喷嘴结构
US10602760B2 (en) Slender and funnel-shaped jet nozzle structure
US20180058744A1 (en) Method and apparatus for impingement freezing of irregularly shaped products
WO2019104782A1 (zh) 一种冲击式速冻机射流喷嘴结构
CN101979675A (zh) 热处理炉用喷流冷却装置
WO2019104784A1 (zh) 一种速冻机用斜切条缝喷嘴
WO2019104785A1 (zh) 一种椭圆漏斗状射流喷嘴结构
CN218507951U (zh) 一种冷却吹风装置
CN214276272U (zh) 一种高效率冷风循环装置
US9791201B1 (en) Spiral chiller apparatus and method of chilling
US20190170424A1 (en) Jet nozzle structure of impact-type freezer
US10913078B2 (en) Elliptical and funnel-shaped jet nozzle structure
CN207702813U (zh) 一种冲击式速冻机圆形射流喷嘴
CN211587113U (zh) 花洒喷嘴结构
CN210438985U (zh) 一种循环风冷装置
CN208318147U (zh) 一种椭圆漏斗状射流喷嘴
CN108246529A (zh) 一种速冻机用花洒漏斗状喷嘴
JP2021090943A (ja) 急速凍結機用ノズル
CN214406899U (zh) 一种用在酒产品流水线上的酒瓶烘干装置
RU2239136C1 (ru) Скороморозильный аппарат для мелких пищевых продуктов
CN112539591A (zh) 一种高效率冷风循环装置
CN216953754U (zh) 一种可实现高速射流的速冻装置
CN214250279U (zh) 一种速冻机的静压箱内的平直叶片式导流板
CN108253702A (zh) 一种半球形漏斗喷嘴
CN212253275U (zh) 一种化工用化工原料快速冷却装置

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2018567869

Country of ref document: JP

Kind code of ref document: A

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17933750

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17933750

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 17933750

Country of ref document: EP

Kind code of ref document: A1

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 13/01/2021)