WO2018133735A1 - 一种钎焊板盒式蒸发器及其制作方法 - Google Patents

一种钎焊板盒式蒸发器及其制作方法 Download PDF

Info

Publication number
WO2018133735A1
WO2018133735A1 PCT/CN2018/072471 CN2018072471W WO2018133735A1 WO 2018133735 A1 WO2018133735 A1 WO 2018133735A1 CN 2018072471 W CN2018072471 W CN 2018072471W WO 2018133735 A1 WO2018133735 A1 WO 2018133735A1
Authority
WO
WIPO (PCT)
Prior art keywords
upper cover
evaporator
brazed
lower case
splitter
Prior art date
Application number
PCT/CN2018/072471
Other languages
English (en)
French (fr)
Inventor
马保伟
Original Assignee
上海冰鑫科技有限公司
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 上海冰鑫科技有限公司 filed Critical 上海冰鑫科技有限公司
Publication of WO2018133735A1 publication Critical patent/WO2018133735A1/zh

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F25B39/022—Evaporators with plate-like or laminated elements
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F25B39/028—Evaporators having distributing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/022—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being wires or pins
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/02—Details of evaporators

Definitions

  • the invention relates to an evaporator and a manufacturing process thereof, in particular to a brazing plate cassette evaporator for a refrigerator or a freezer and a manufacturing process thereof.
  • evaporators used in refrigeration equipment on the market: tube-plate evaporators, wire-tube evaporators, inflation-type evaporators, and fin-and-tube evaporators.
  • Tube-and-plate evaporator The evaporator is made by winding a copper tube, an aluminum tube or an iron tube into an S-shaped passage, and then bonding it with an orange peel aluminum plate with a tape.
  • the evaporator has a single structure and a thick thickness (8-10 mm). The contact between the tube and the plate is point and line contact, and the effective heat exchange area is small, the heat exchange efficiency is low, the deformation is easy, and the iron pipe is easily corroded.
  • Wire-tube heat exchanger The evaporator is made by coiling the steel pipe into an S-shaped refrigerant passage, and then welding the heat-exchange pipes of the refrigerant with parallel densely arranged steel wires.
  • the evaporator has a single structure, a thick thickness (9-10 mm), and has an effective heat exchange area, low heat exchange efficiency, corrosion resistance, and low life.
  • Inflatable evaporator uses two aluminum plates to print the heat exchange medium passage on the inner surface with a pressure-resistant powder or paint, and presses the surface of the non-passage portions of the two aluminum plates by superposition rolling. Together, the printed passage portion is inflated by inflation to form a passage for the refrigerant.
  • the method is realized by high-pressure pressing, and the channel has large aperture, large spacing, low density, and the drum is driven on both sides, and the drum surface and the plastic shell of the refrigerator are in point and line contact, and the cooling effect is poor, and the space is small.
  • the proportion is large, and the proportion of refrigeration area is small.
  • such structural changes are small, the appearance is poor, the production efficiency is low, and the manufacturing cost is high, and most of them are hidden inside or hidden places of the lining plate of the refrigeration equipment.
  • Finned tube evaporator The evaporator is made by inserting aluminum foil fins on a plurality of rows of copper tubes or aluminum tubes. The tubes are connected in series to form a refrigerant passage, and the fins are blown through the fins to realize the cooling function.
  • the evaporator is mainly used for intercooled refrigerators and freezers. Existing refrigeration equipment, especially when the evaporator is cooled, has serious frosting and frosting, and the defrosting is difficult and the effect is poor, which further reduces the cooling effect, resulting in a large energy loss during use.
  • the evaporator in the existing refrigeration equipment has a thick thickness, a large thickness space ratio, a small refrigeration area, a slow speed, low efficiency, a complicated structure, an uneven appearance, inconvenient production and assembly, low structural strength, and easy The problem of deformation.
  • the purpose of the invention is to solve the problem that the evaporator in the existing refrigeration equipment has a thick thickness, a large thickness space ratio, a small refrigeration area, a slow speed, a low efficiency, a complicated structure, an uneven appearance, inconvenient production and assembly, and low structural strength. And easy to deform problems. Further, a brazed plate cassette evaporator and a method of fabricating the same are provided.
  • a brazed plate cassette evaporator comprising an upper cover, a lower case and a corrugated fin; the upper cover or the lower case is provided with a refrigerant inlet and a refrigerant outlet, and the upper cover and the upper cover are
  • the lower case is brazed into a flat box body, and the upper end and the lower end of each of the corrugated fins are brazed to the inner surfaces of the upper cover and the lower case, respectively, and the inside of the corrugated fins are spaced apart from each other to form a separate flow guide.
  • a channel, one end of each corrugated fin abuts at a header interface at the inlet of the refrigerant, and the other end of each corrugated fin abuts at a header interface at the outlet of the refrigerant .
  • the flow splitter is a splitter type splitter or a split fin type splitter
  • the splitter type splitter has a window with a degree of opening and a window distance
  • the window opening of the splitter type splitter is at the refrigerant inlet
  • the side or the refrigerant outlet side gradually becomes larger at the distal end thereof
  • the window window distance of the shunt tubular type diverter gradually becomes smaller on the refrigerant inlet side or the refrigerant outlet side to the distal end thereof
  • the split fin type splitter is opened Apertures with a narrower aperture and a larger pitch, and the aperture of the split finned splitter gradually becomes larger at the refrigerant inlet side or the refrigerant outlet side to the distal end thereof, and the split finned splitter has a pitch at the refrigerant inlet side or The refrigerant outlet side gradually becomes smaller toward its distal end.
  • splitter and the collecting tube are respectively located at opposite ends of the flat box body.
  • corrugated fins in the flat case are S-shaped fins or flat fins.
  • both the splitter and the header are mounted at one end of the flat case.
  • corrugated fins are assembled into a "U” shaped passage by three finned plates, or a "U” shaped passage punched from a single piece of metal, and the middle of the splitter is separated by a partition.
  • the present invention also provides a method for manufacturing a brazed plate type evaporator, and the manufacturing steps of the plate and box evaporator are as follows:
  • corrugated fin and the diverter are respectively installed in the lower box body and the collecting tube, and the upper cover is fastened on the lower box body;
  • the upper cover and the lower case which are fastened together in step 3 are placed in a high-temperature furnace brazing, heated to a brazing temperature, and after being kept for 10-40 minutes, the temperature is lowered, and the wavy fins in the upper cover and the lower case are automatically Welding, taking out the semi-finished brazing plate cassette evaporator, ventilating into the brazing plate cassette evaporator, and checking whether the semi-finished brazing plate cassette evaporator leaks;
  • the semi-finished brazed plate cassette evaporator is surface treated to obtain a finished brazed plate cassette evaporator.
  • the material of the upper cover, the lower case, the corrugated fin, the flow divider and the collecting pipe in the third step is an aluminum alloy composite plate, a copper plate or a steel plate.
  • the brazing temperature of the upper cover and the lower case is: the brazing temperature of the aluminum alloy composite plate is 580 ° C to 635 ° C, the brazing temperature of the copper plate is 180 ° C to 950 ° C, and the brazing of the steel plate The temperature is from 800 ° C to 1250 ° C.
  • the surface treatment in the step 5 is performed by washing, sanding, painting, coloring, anodizing, electrophoretic painting, electrostatic spraying, hydrophilic or hydrophobic.
  • the invention has the following effects:
  • the invention Since the invention has a simple shape and a large surface area, and the heat exchange area exceeds the existing tubular heat exchanger, the evaporator has high working efficiency. Defrost is easy due to its simple shape and flat shape.
  • the inner corrugated fin 3 also functions as a reinforcing rib, so the overall structural strength is high.
  • the refrigeration and heat dissipation speed of the invention are fast and the efficiency is increased by more than 30%, and the corrosion-resistant life is long after the aluminum alloy composite plate, the copper plate or the steel plate is used.
  • the invention has high efficiency, no high-power compressor is needed, and the refrigeration speed is fast, so that the working time of the compressor is short, the energy consumption is low, the noise is small, and the service life is long;
  • the structure of the invention is flat, beautiful, high in strength, less frosting of the evaporator product, convenient and quick defrosting, and not easy to be deformed.
  • the invention is a flat box body with a thin overall thickness and can be thinned to 2.5 mm, which can effectively reduce the space occupied by the evaporator of the refrigerator and reduce the thickness of the thermal insulation foam board by 4 to 5 mm, and improve the effective volume ratio of the refrigeration equipment. Very big.
  • the strength distribution of the refrigeration zone is convenient in design, good in effect, high in automation production, and convenient for mass production.
  • the refrigeration plates of the current refrigerators, freezers, ice machines and ice cream machines can be heat-exchanged by the evaporator of the invention, which not only enlarges the heat exchange area, but also improves the refrigeration capacity and efficiency.
  • Figure 1 is a perspective view showing the outer structure of the present invention (the direction of the arrow indicates the introduction direction and the direction of the refrigerant);
  • FIG. 2 is a schematic structural view of a lower case 2, a corrugated fin 3, a flow divider, and a header;
  • Figure 3 is a perspective view of the upper cover 1
  • Figure 4 is a perspective view of the lower case 2;
  • Figure 5 is a perspective view of an "S" shaped fin
  • Figure 6 is a plan view of Figure 5;
  • Figure 7 is a cross-sectional view of Figure 5;
  • Figure 8 is a schematic structural view of the shunt tube type shunt 8;
  • Figure 9 is a perspective view showing the structure of the split fin type splitter 6;
  • Figure 10 is a cross-sectional view of Figure 9;
  • Figure 11 is a perspective view showing the overall structure of the inlet end and the outlet end header of the present invention on the same side;
  • Figure 12 is a perspective view of the lower casing 2, the corrugated fins 3, the diverter and the header when the introduction end and the outlet end header are on the same side;
  • Figure 13 is a perspective view of the upper cover 1;
  • Figure 14 is a perspective view of the lower case 2;
  • Figure 15 is a perspective view of the flow divider with the partition 5 installed when the splitter and the header are on the same side;
  • Figure 16 is a structural exploded view of a "U" shaped fin
  • Figure 17 is a perspective view of a rectangular wave-shaped flow guiding fin 3-3;
  • Figure 18 is a schematic structural view of a circular manifold evaporator
  • Figure 19 is a schematic structural view of a circular shunt tube type splitter 8.
  • Figure 20 is a block diagram showing the flow of the manufacturing method of the present invention.
  • the position of the introduction tube 4 or the outlet tube 5 in Fig. 1 is defined as the proximal end, and the opposite side of the introduction tube 4 or the outlet tube 5 is defined as the distal end.
  • FIG. 1 to FIG. 19 which includes an upper cover 1, a lower case 2 and a corrugated fin 3, and an upper cover 1 or
  • the lower case 2 is provided with a refrigerant inlet and a refrigerant outlet, and the upper cover 1 and the lower case 2 are brazed into a flat case, and the upper end and the lower end of each of the corrugated fins 3 are brazed to the upper cover 1 and the lower side, respectively.
  • each corrugated fin 3 On the inner surface of the casing 2, the inside of the corrugated fin 3 is partitioned from each other by spacers to form mutually separate flow guiding passages, and one end of each corrugated fin 3 is abutted at the header of the collector at the inlet of the refrigerant. The other end of each of the corrugated fins 3 is abutted at the header of the collector at the outlet of the refrigerant.
  • the shape is flat and the surface area is large, and the heat exchange area exceeds the existing tube-plate type, wire-tube type, inflation type and fin-and-tube type refrigeration device, so the evaporator has high working efficiency.
  • Defrost is easy due to its simple shape and flat shape.
  • the inner corrugated fin 3 functions indirectly as a reinforcing rib, so the brazed plate type evaporator of the present invention has a high overall structural strength.
  • the upper cover 1 of the present embodiment includes a rectangular connecting plate 1-1, two recesses 1-2, and two gussets 1-3.
  • the open ends of the two recesses 1-2 face downward and are oppositely disposed, and the two recesses
  • the slots 1-2 are connected by opposite sides of the rectangular connecting plate 1-1, and the upper ends of the two fastening plates 1-3 are connected with the other two sides of the rectangular connecting plate 1-2, between the two grooves 1-2
  • a refrigerant fluid chamber is formed below the rectangular connecting plate 1-1 (see Fig. 3).
  • Embodiment 2 The present embodiment is described with reference to FIG. 2, FIG. 9 to FIG. 20.
  • the shunt of the present embodiment is a shunt tube type shunt 8 or a split fin type shunt 6 according to application requirements, a collecting tube and a shunt.
  • the tube may be square or circular, and the shunt tube type shunt 8 is provided with a window having an opening degree and a window distance gradient, and the window opening of the shunt tube type shunt 8 is on the refrigerant inlet side or the refrigerant outlet side.
  • the window window distance of the shunt tube type shunt 8 gradually becomes smaller on the refrigerant inlet side or the refrigerant outlet side to the distal end thereof;
  • the split fin type splitter 6 has an aperture and a pitch a tapered hole, and the diameter of the split finned splitter 6 gradually becomes larger at the refrigerant inlet side or the refrigerant outlet side to the distal end thereof, and the split fin type splitter 6 has a pitch at the refrigerant inlet side or the refrigerant The outlet side gradually becomes smaller at its distal end.
  • This arrangement makes it easy to split the refrigerant evenly.
  • Other compositions and connection relationships are the same as in the first embodiment.
  • the shunt tube type shunt 8 of the present embodiment is a circular manifold type shunt.
  • the corrugated fin 3 of the present embodiment is an S-shaped fin or a flat fin.
  • the S-shaped fins not only have high support strength, but also can improve the cooling effect.
  • the S-shaped fins also have a spoiler and membrane breaking effect, which can break the cold film effect of the fin walls.
  • Straight fins easy to manufacture, low cost, fast refrigerant flow rate, improved heat transfer, especially suitable for long-channel working environment.
  • Other compositions and connection relationships are the same as those of the specific embodiment one, two or three.
  • the present embodiment is described with reference to FIG. 12 and FIG. 16.
  • the corrugated fin 3 of the present embodiment is formed by three fin plates into a "U" shaped channel, or is stamped from a single metal plate. U-shaped channel, and the middle of the splitter is separated by a partition 5. In this way, the refrigerant in the refrigerating plate flows in accordance with the divided U-shaped flow path region, thereby changing the refrigerant flow direction.
  • Other compositions and connection relationships are the same as those of the specific embodiment one, two, three, four or five.
  • the "U"-shaped fin of the present embodiment includes a transition fin 3-1, a spacer 3-2, and two wave-shaped flow guiding fins 3-3, and the two wave-shaped flow guiding fins 3-3 are sequentially arranged.
  • the two wave-shaped flow guiding fins 3-3 are connected by a spacer 3-2, and the two wave-shaped flow guiding fins 3-3 are provided with a refrigerant through a transition fin 3-1 perpendicular to the refrigerant flow direction. Return to the steering channel.
  • the outer contour shape of the wave-shaped flow guiding fin 3-3 is a right-angled trapezoid, and the two wave-shaped flow guiding fins 3-3 are oppositely disposed, and the two wave-shaped flow guiding fins 3-3 are connected by the spacer 3-2.
  • the transition fin 3-1 is mounted on the waist of the right-angled trapezoid to form a "U" return passage, and the transition fin 3-1 can form a rectangular corrugated fin 3 with the two wave-shaped guide fins 3-3, which is convenient for installation.
  • the channel direction of the two wave-shaped flow guiding fins 3-3 is parallel to the upper or lower bottom of the right-angled trapezoidal fin, and the channel of the transition fin 3-1 is a right-angled trapezoid.
  • the right-angled sides are parallel, which provides a turn for the flow of the refrigerant, and the steering of the refrigerant is smoother and the heat exchange area is increased.
  • the wave guiding fins 3-3 are square wave fins. The length of each of the wave-shaped guide fins 3-3 is gradually increased or decreased, and the width of the flow path in the same flow path of each of the wave-shaped flow guiding fins 3-3 is unequal.
  • the upper cover 1, the lower case 2, the corrugated fin 3, the sealing cap 7, the flow divider and the collecting tube are cleaned with a neutral cleaning agent or acid-base water, and the upper cover 1 and the lower case 2 to be brazed are wave-shaped. Spraying flux on the fins 3, the diverter and the collecting tube, and then drying;
  • the corrugated fins 3 and the diverter are respectively installed in the lower case 2 and the header, and the upper cover 1 is fastened to the lower case 2, and then the plurality of sealing caps 7 are respectively mounted on the semi-finished brazed plate cassette evaporator. a shunt and a header of the manifold, and simultaneously connecting the sealing cap 7 with the conduit 4 to obtain an assembled brazed plate evaporator;
  • the upper cover 1 and the lower case 2 which are fastened together in step 3 are placed in a high-temperature furnace brazing, heated to a brazing temperature, and after being kept for 10-40 minutes, the temperature is lowered, and the upper cover 1 and the lower case 2 are inside.
  • the corrugated fins 3 are automatically welded, the semi-finished brazed plate cassette evaporator is taken out, and the brazed plate cassette evaporator is ventilated to check whether the semi-finished brazed plate cassette evaporator leaks;
  • the semi-finished brazed plate cassette evaporator is surface treated to obtain a finished brazed plate cassette evaporator.
  • the present embodiment is described with reference to FIG. 1 to FIG. 20.
  • the material of the upper cover 1, the lower case 2, the corrugated fin 3, the flow divider and the header in the third step of the present embodiment is an aluminum alloy composite.
  • the plate, copper plate or steel plate is arranged such that the aluminum has better heat conduction effect than the steel evaporator, and the copper has better heat conduction effect than the aluminum and iron evaporator, and the steel evaporator has high strength and good wear resistance. Make the evaporator by selecting the best matching material according to the purpose of use. Other compositions and connection relationships are the same as in the seventh embodiment.
  • the brazing temperature of the upper cover 1 and the lower case 2 in step 4 of the present embodiment is as follows: the brazing temperature of the aluminum alloy composite plate is 580 ° C to ⁇ in conjunction with FIG. 1 to FIG. At 635 ° C, the brazing temperature of the copper plate is 180 ° C to 950 ° C, and the brazing temperature of the steel plate is 800 ° C to 1250 ° C. This is set to ensure the quality of brazing.
  • Other compositions and connection relationships are the same as in the eighth embodiment.
  • the product of the present invention is placed in a refrigerating apparatus, and the refrigerant enters from one of the diverters, flows through the corrugated fins 3, and is finally led out by another diverter.
  • the spacers prevent the refrigerant from approaching the path, and several sets of surrounding spacers are added between the fins of a certain width.
  • the opening of the header is appropriately adjusted to control the uniform circulation and cooling of the refrigerant in the refrigeration plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

提供了一种钎焊板盒式蒸发器及其制作方法。钎焊板盒式蒸发器包括上盖(1)、下盒体(2)和波形翅片(3)，上盖(1)或下盒体(2)上开有制冷剂入口和制冷剂出口，上盖(1)与下盒体(2)钎焊成一个扁平盒体，每个波形翅片(3)的上端和下端分别钎焊于上盖(1)和下盒体(2)的内表面上，波形翅片(3)内部由隔板相互间隔形成彼此分开的导流通道，每个波形翅片(3)的一端端部都对接在制冷剂的入口处的集流管接口处，每个波形翅片(3)的另一端端部都对接在制冷剂的出口处的集流管接口处。制作方法包括：步骤一、冲压；步骤二、清洗；步骤三、组装；步骤四、钎焊；步骤五、表面处理。

Description

一种钎焊板盒式蒸发器及其制作方法
相关申请的交叉引用
本申请要求于2017年01月18日提交中国专利局的申请号为201710034650.1、名称为“一种钎焊板盒式蒸发器及其制作方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及一种蒸发器及其制作工艺，具体涉及一种用于冰箱或冰柜上的钎焊板盒式蒸发器及其制作工艺。
背景技术
目前，市面上制冷设备使用的蒸发器主要有以下四种：管板式蒸发器、丝管式蒸发器、吹胀式蒸发器和翅片管式蒸发器。
1、管板式蒸发器：该蒸发器是将铜管、铝管或铁管盘成S形通路，然后用胶带与橘皮铝板贴合在一起。该蒸发器的结构单一，厚度较厚(8～10mm)，管与板的接触是点、线式接触，其有效换热面积小、换热效率低、易变形、铁管易腐蚀。
2、丝管式换热器：该蒸发器是将钢管盘成S形制冷剂通路，然后用平行密集排列的钢丝与制冷剂换热管路焊合在一起。该蒸发器的结构单一，厚度较厚(9～10mm)，且有效换热面积小、换热效率低、易腐蚀、寿命低。
3、吹胀式蒸发器：该蒸发器是用两张铝板在内表面用抗压粉体或漆料印刷上换热介质通路，经过叠合轧制将两张铝板的非通路部分的表面压合在一起，然后再通过吹胀方式将印刷好的通路部分吹胀起来，形成制冷剂的通路。但其实现的方法是高压压合，且通道孔径大、间距大、密度低，还要双面起鼓，而起鼓面与冰箱塑料壳体是点、线接触，其制冷效果差，且空间占比大，制冷面积占比小。另外，这种结构变化少，外观差，生产效率低、制造成本高，多是隐藏在制冷设备内衬板的里面或隐蔽处。
4、翅片管式蒸发器：该蒸发器是在多排铜管或铝管上穿上铝箔翅片制成的，管路串联后形成制冷剂通道，经风扇吹过翅片实现制冷功能。该蒸发器主要用于间冷式冰箱、冰柜。现有的制冷设备，尤其是蒸发器在制冷时，都存在结霜、挂霜现象严重，且除霜难度大、效果差，这进一步降低制冷效果，导致使用过程中能耗损失很大。
综上所述，现有制冷设备中的蒸发器存在厚度厚、厚度空间占比大、制冷面积小、速度慢、效率低、结构复杂、外观不平整、生产装配不方便、结构强度低和易变形的问题。
发明内容
本发明的目的是为了解决现有制冷设备中的蒸发器存在厚度厚、厚度空间占比大、制冷面积小、速度慢、效率低、结构复杂、外观不平整、生产装配不方便、结构强度低和易变形的问题。进而提供一种钎焊板盒式蒸发器及其制作方法。
本发明的技术方案是：一种钎焊板盒式蒸发器，它包括上盖、下盒体和波形翅片，上盖或下盒体上开有制冷剂入口和制冷剂出口，上盖与下盒体钎焊成一个扁平盒体，每个波形翅片的上端和下端分别钎焊于上盖和下盒体的内表面上，波形翅片内部由隔板相互间隔形成彼此分开的导流通道，每个波形翅片的一端端部都对接在制冷剂的入口处的集流管接口处，每个波形翅片的另一端端部都对接在制冷剂的出口处的集流管接口处。
进一步地，分流器为分流管式分流器或分流翅片式分流器，分流管式分流器上开有开度和窗距渐变的窗口，且分流管式分流器的窗口开度在制冷剂入口侧或制冷剂出口侧至其远端逐渐变大，分流管式分流器的窗口窗距在制冷剂入口侧或制冷剂出口侧至其远端逐渐变小；分流翅片式分流器上开有孔径和孔距渐变的孔洞，且分流翅片式分流器的孔径在制冷剂入口侧或制冷剂出口侧至其远端逐渐变大，分流翅片式分流器的孔距在制冷剂入口侧或制冷剂出口侧至其远端逐渐变小。
进一步地，分流器与集流管分别位于扁平盒体的相对两端。
进一步地，扁平盒体内的波形翅片为S形翅片或平直形翅片。
进一步地，分流器与集流管都安装在扁平盒体的一端。
进一步地，波形翅片由三块翅片板拼合成“U”形通道，或是由一整块金属板冲压成的“U”形通道，且分流器的中部通过隔板分隔开。
更进一步地，本发明还提供了一种钎焊板盒式蒸发器的制作方法，所述板盒式蒸发器的制作步骤如下：
步骤一、冲压；
利用冲压模具按图纸尺寸压制上盖、下盒体、波形翅片、封口帽、分流器和集流管；
步骤二、清洗；
采用中性清洗剂或酸碱水清洗上盖、下盒体、波形翅片、封口帽、分流器和集流管，在待钎焊的上盖、下盒体、波形翅片、分流器和集流管上喷钎剂，然后烘干；
步骤三、组装；
将波形翅片和分流器分别安装在下盒体和集流管内，并将上盖扣合在下盒体上；
步骤四、钎焊；
将步骤三完成的扣合在一起的上盖和下盒体置于高温炉钎焊中，加热到钎焊温度，保温10-40分钟后降温出炉，上盖和下盒体内的波形翅片自动焊合，取出半成品钎焊板盒式 蒸发器，向钎焊板盒式蒸发器内通气，检查半成品钎焊板盒式蒸发器是否漏气；
步骤五、表面处理；
对半成品钎焊板盒式蒸发器进行表面处理，即获得成品钎焊板盒式蒸发器。
进一步地，步骤三中的上盖、下盒体、波形翅片、分流器和集流管的材质为铝合金复合板、铜板或钢板。
进一步地，步骤四中对上盖和下盒体的钎焊温度为：铝合金复合板的钎焊温度为580℃～635℃，铜板的钎焊温度为180℃～950℃，钢板的钎焊温度为800℃～1250℃。
进一步地，步骤五中的表面处理采用水洗、打磨、喷漆、着色、阳极氧化、电泳涂漆、静电喷涂、亲水或疏水的方式。
本发明与现有技术相比具有以下效果：
1、由于本发明外形简单而且表面积大，换热面积超过已有的管式换热装置，因此蒸发器工作效率高。由于外形简单且是平面形状，便于除霜。内部的波形翅片3兼而起到加强肋的作用，所以整体结构强度高。
2、本发明的制冷、散热速度快、效率提高30％以上，在采用铝合金复合板、铜板或钢板后，使得耐腐蚀寿命长。
3、由于本发明的效率高，无需大功率的压缩机，制冷速度快，使得压缩机的工作时间短，能耗低、噪音小、寿命长；
4、本发明的结构平整、美观、强度高，蒸发器产品的结霜少、除霜方便快捷，且不易变形。
5、本发明为扁平的盒体，整体厚度薄，可减薄到2.5mm，能够有效的降低冰箱蒸发器空间占用和减薄保温泡沫板的厚度4～5mm，对制冷设备的有效容积率提升很大。
6、制冷区域的强度分配设计方便，效果好，自动化生产程度高，便于大批量生产制造。
7、目前的冰箱、冰柜、制冰机和冰激凌机的制冷板可采用本发明的蒸发器进行换热，不仅扩大换热面积，还能提高制冷能力和效率。
附图说明
图1是本发明的外形结构立体图(箭头方向表示制冷剂的导入方向和导出方向)；
图2是下盒体2、波形翅片3、分流器和集流管的结构示意图；
图3是上盖1的立体图；
图4是下盒体2的立体图；
图5是“S”形翅片的立体图；
图6是图5的俯视图；
图7是图5的截面图；
图8是分流管式分流器8的结构示意图；
图9是分流翅片式分流器6的立体结构示意图；
图10是图9的剖视图；
图11是本发明的导入端和导出端集流管位于同一条边上的整体结构立体图；
图12是导入端和导出端集流管位于同一侧时，下盒体2、波形翅片3、分流器和集流管的立体图；
图13是上盖1的立体图；
图14是下盒体2的立体图；
图15是分流器和集流管位于同一条边上时安装有隔板5的分流器立体图；
图16是“U”形翅片的结构分解图；
图17是矩形波形导流翅片3-3的立体图；
图18是圆形集流管式蒸发器的结构示意图；
图19是圆形分流管式分流器8的结构示意图；
图20是本发明制造方法的流程框图示意图。
具体实施方式
为了更加清楚的表述本发明的方位，现以图1中导入管4或导出管5的所在的位置方向定义为近端，导入管4或导出管5相对一侧定义为远端。
具体实施方式一：结合图1至图19说明本实施方式，本实施方式的一种钎焊板盒式蒸发器，它包括上盖1、下盒体2和波形翅片3，上盖1或下盒体2上开有制冷剂入口和制冷剂出口，上盖1与下盒体2钎焊成一个扁平盒体，每个波形翅片3的上端和下端分别钎焊于上盖1和下盒体2的内表面上，波形翅片3内部由隔板相互间隔形成彼此分开的导流通道，每个波形翅片3的一端端部都对接在制冷剂的入口处的集流管接口处，每个波形翅片3的另一端端部都对接在制冷剂的出口处的集流管接口处。
如此设置，外形平整而且表面积大，换热面积超过已有的管板式、丝管式、吹胀式和翅片管式制冷装置，因此蒸发器工作效率高。由于外形简单且是平面形状，便于除霜。内部的波形翅片3间接起到加强肋的作用，所以本发明的钎焊板盒式蒸发器整体结构强度高。
本实施方式的上盖1包括矩形连接板1-1、两个凹槽1-2和两个扣板1-3，两个凹槽1-2的开口端朝下且相对设置，两个凹槽1-2之间通过矩形连接板1-1上相对的两边连接，两个扣板1-3的上端与矩形连接板1-2的另外两边连接，两个凹槽1-2之间的矩形连接板1-1下方形成一个制冷剂流体腔室(参见图3)。
具体实施方式二：结合图2、图9至图20说明本实施方式，本实施方式的分流器为分 流管式分流器8或分流翅片式分流器6，根据应用要求，集流管和分流管可以是方形，也可以是圆形，分流管式分流器8上开有开度和窗距渐变的窗口，且分流管式分流器8的窗口开度在制冷剂入口侧或制冷剂出口侧至其远端逐渐变大，分流管式分流器8的窗口窗距在制冷剂入口侧或制冷剂出口侧至其远端逐渐变小；分流翅片式分流器6上开有孔径和孔距渐变的孔洞，且分流翅片式分流器6的孔径在制冷剂入口侧或制冷剂出口侧至其远端逐渐变大，分流翅片式分流器6的孔距在制冷剂入口侧或制冷剂出口侧至其远端逐渐变小。如此设置，便于将制冷剂均匀的分流。其它组成和连接关系与具体实施方式一相同。
本实施方式的分流管式分流器8为圆形集流管式分流器。
具体实施方式三：结合图1和图19说明本实施方式，本实施方式的分流器与集流管分别位于扁平盒体长度方向的两端。如此设置，与现有制冷设备的结构相匹配，通用性好。如此设置，便于实现均匀化分流。其它组成和连接关系与具体实施方式一或二相同。
具体实施方式四：结合图2、图5和图6说明本实施方式，本实施方式的波形翅片3为S形翅片或平直形翅片。如此设置，S形翅片：不但支撑强度高，而且能够提高冷却效果，另外，S形翅片还具有扰流破膜效应，能够破除翅片壁的冷膜效应。平直形翅片：便于生产制造，成本低廉，制冷剂流速快，提高换热效果，尤其适用于长通道的工作环境。其它组成和连接关系与具体实施方式一、二或三相同。
具体实施方式五：结合图11说明本实施方式，本实施方式的分流器与集流管都安装在扁平盒体的一端。如此创新设置，隐蔽性好，进一部改善现有制冷设备蒸发器部件的外观，并与现有制冷设备的结构匹配，通用性好。其它组成和连接关系与具体实施方式四相同。
具体实施方式六：结合图12和图16说明本实施方式，本实施方式的波形翅片3由三块翅片板拼合成“U”形通道，或是由一整块金属板冲压成的“U”形通道，且分流器的中部通过隔板5分隔开。如此设置，使制冷板中的制冷剂按照分割成的U形流道区流动，从而改变制冷剂流通方向。其它组成和连接关系与具体实施方式一、二、三、四或五相同。
本实施方式的“U”形翅片包括过渡翅片3-1、隔条3-2和两个波形导流翅片3-3，两个波形导流翅片3-3顺次排布，两个波形导流翅片3-3之间通过隔条3-2连接，两个波形导流翅片3-3之间通过一个垂直于制冷剂流向的过渡翅片3-1为制冷剂提供回流转向通道。波形导流翅片3-3的外轮廓形状为直角梯形，两个波形导流翅片3-3相对设置，且两个波形导流翅片3-3之间通过隔条3-2连接，过渡翅片3-1安装在直角梯形的腰上形成“U”回流通道，且过渡翅片3-1能够与两个波形导流翅片3-3组成矩形的波形翅片3，不但便于安装在矩形的下盒体2内，两个波形导流翅片3-3的槽道方向是平行于直角梯形翅片的上底或下底的，过渡翅片3-1的槽道是直角梯形的直角边平行，这样就为制冷剂的流向提供一个转向，而且制冷剂的转向更加顺畅还增加了换热面积。波形导流翅片3-3均为方形波翅片。每个波 形导流翅片3-3的长度逐渐增加或减小，且每个波形导流翅片3-3的同一个流道内的流道宽度不等。
具体实施方式七：结合图1至图20说明本实施方式，本实施方式的一种钎焊板盒式蒸发器的制作方法，所述板盒式蒸发器的制作步骤如下：
步骤一、冲压；
利用冲压模具按图纸尺寸压制上盖1、下盒体2、波形翅片3、封口帽7、分流器和集流管；
步骤二、清洗；
采用中性清洗剂或酸碱水清洗上盖1、下盒体2、波形翅片3、封口帽7、分流器和集流管，在待钎焊的上盖1、下盒体2、波形翅片3、分流器和集流管上喷钎剂，然后烘干；
步骤三、组装；
将波形翅片3和分流器分别安装在下盒体2和集流管内，并将上盖1扣合在下盒体2上，然后将多个封口帽7分别安装在半成品钎焊板盒式蒸发器的分流器和集流管头部，同时将封口帽7与导管4连接，从而获得组装后的钎焊板盒式蒸发器；
步骤四、钎焊；
将步骤三完成的扣合在一起的上盖1和下盒体2置于高温炉钎焊中，加热到钎焊温度，保温10-40分钟后降温出炉，上盖1和下盒体2内的波形翅片3自动焊合，取出半成品钎焊板盒式蒸发器，向钎焊板盒式蒸发器内通气，检查半成品钎焊板盒式蒸发器是否漏气；
步骤五、表面处理；
对半成品钎焊板盒式蒸发器进行表面处理，即获得成品钎焊板盒式蒸发器。
具体实施方式八：结合图1至图20说明本实施方式，本实施方式的步骤三中的上盖1、下盒体2、波形翅片3、分流器和集流管的材质为铝合金复合板、铜板或钢板如此设置，铝质较钢质蒸发器的导热的效果好，铜质较铝质、铁质蒸发器的导热的效果好，钢质蒸发器的强度高、耐磨性能好，根据使用目的选择最匹配的材质制造蒸发器。其它组成和连接关系与具体实施方式七相同。
具体实施方式九：结合图1至图20说明本实施方式，本实施方式的步骤四中对上盖1和下盒体2的钎焊温度为：铝合金复合板的钎焊温度为580℃～635℃，铜板的钎焊温度为180℃～950℃，钢板的钎焊温度为800℃～1250℃。如此设置，便于保证钎焊的质量。其它组成和连接关系与具体实施方式八相同。
具体实施方式十：结合图1至图20说明本实施方式，本实施方式的步骤五中的表面处理采用水洗、打磨、喷漆、着色、阳极氧化、电泳涂漆、静电喷涂、亲水或疏水的方式。如此设置，有效提高了蒸发器的防腐性能、除霜性能和外观质量。其它组成和连接关系与 具体实施方式九相同。
本发明的工作过程：将本发明产品置于制冷设备内，制冷剂从其中一个分流器进入，流经波形翅片3，最后由另外一个分流器导出。隔条可以防止制冷剂走近路，在一定宽度的翅片中间也要增加几组环绕隔片。另外，为了使制冷剂能均匀分布流通，要将集流管中的开窗口适当的调整开度，以控制制冷剂在制冷版中的均匀流通、制冷。

Claims (10)

  1. 一种钎焊板盒式蒸发器，其特征在于：它包括上盖(1)、下盒体(2)和波形翅片(3)，上盖(1)或下盒体(2)上开有制冷剂入口和制冷剂出口，上盖(1)与下盒体(2)钎焊成一个扁平盒体，每个波形翅片(3)的上端和下端分别钎焊于上盖(1)和下盒体(2)的内表面上，波形翅片(3)内部由隔板相互间隔形成彼此分开的导流通道，每个波形翅片(3)的一端端部都对接在制冷剂的入口处的集流管接口处，每个波形翅片(3)的另一端端部都对接在制冷剂的出口处的集流管接口处。
  2. 根据权利要求1所述一种钎焊板盒式蒸发器，其特征在于：分流器为分流管式分流器(8)或分流翅片式分流器(6)，分流管式分流器(8)上开有开度和窗距渐变的窗口，且分流管式分流器(8)的窗口开度在制冷剂入口侧或制冷剂出口侧至其远端逐渐变大，分流管式分流器(8)的窗口窗距在制冷剂入口侧或制冷剂出口侧至其远端逐渐变小；分流翅片式分流器(6)上开有孔径和孔距渐变的孔洞，且分流翅片式分流器(6)的孔径在制冷剂入口侧或制冷剂出口侧至其远端逐渐变大，分流翅片式分流器(6)的孔距在制冷剂入口侧或制冷剂出口侧至其远端逐渐变小。
  3. 根据权利要求2所述一种钎焊板盒式蒸发器，其特征在于：分流器与集流管分别位于扁平盒体的相对两端。
  4. 根据权利要求3所述一种钎焊板盒式蒸发器，其特征在于：扁平盒体内的波形翅片(3)为S形翅片或平直形翅片。
  5. 根据权利要求2所述一种钎焊板盒式蒸发器，其特征在于：分流器与集流管都安装在扁平盒体的一端。
  6. 根据权利要求5所述一种钎焊板盒式蒸发器，其特征在于：波形翅片(3)由三块翅片板拼合成“U”形通道，或是由一整块金属板冲压成的“U”形通道，且分流器的中部通过隔板(5)分隔开。
  7. 根据权利要求1-6任意一项权利要求所述的钎焊板盒式蒸发器的制作方法，其特征在于：所述板盒式蒸发器的制作步骤如下：
    步骤一、冲压；
    利用冲压模具按图纸尺寸压制上盖(1)、下盒体(2)、波形翅片(3)、分流器和集流管；
    步骤二、清洗；
    采用中性清洗剂或酸碱水清洗上盖(1)、下盒体(2)、波形翅片(3)、分流器和集流管，在待钎焊的上盖(1)、下盒体(2)、波形翅片(3)、分流器和集流管上喷钎剂，然后烘干；
    步骤三、组装；
    将波形翅片(3)和分流器分别安装在下盒体(2)和集流管内，并将上盖(1)扣合在下盒体(2)上；
    步骤四、钎焊；
    将步骤三完成的扣合在一起的上盖(1)和下盒体(2)置于高温钎焊炉中加热到钎焊温度，保温10-40分钟后降温出炉，上盖(1)和下盒体(2)内的波形翅片(3)自动焊合，取出半成品钎焊板盒式蒸发器，向钎焊板盒式蒸发器内通气，检查是否漏气；
    步骤五、表面处理；
    对半成品钎焊板盒式蒸发器进行表面处理，即获得成品钎焊板盒式蒸发器。
  8. 根据权利要求7所述的一种钎焊板盒式蒸发器的制作方法，其特征在于：步骤三中的上盖(1)、下盒体(2)、波形翅片(3)、分流器和集流管的材质为铝合金复合板、铜板或钢板。
  9. 根据权利要求8所述的一种钎焊板盒式蒸发器的制作方法，其特征在于：步骤四中对上盖(1)和下盒体(2)的钎焊温度为：铝合金复合板的钎焊温度为580℃～635℃，铜板的钎焊温度为180℃～950℃，钢板的钎焊温度为800℃～1250℃。
  10. 根据权利要求7所述的一种钎焊板盒式蒸发器的制作方法，其特征在于：步骤五中的表面处理采用水洗、打磨、喷漆、着色、阳极氧化、电泳涂漆、静电喷涂、亲水或疏水的方式。
PCT/CN2018/072471 2017-01-18 2018-01-12 一种钎焊板盒式蒸发器及其制作方法 WO2018133735A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710034650.1 2017-01-18
CN201710034650.1A CN106766396B (zh) 2017-01-18 2017-01-18 一种钎焊板盒式蒸发器及其制作方法

Publications (1)

Publication Number Publication Date
WO2018133735A1 true WO2018133735A1 (zh) 2018-07-26

Family

ID=58946354

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/072471 WO2018133735A1 (zh) 2017-01-18 2018-01-12 一种钎焊板盒式蒸发器及其制作方法

Country Status (2)

Country Link
CN (1) CN106766396B (zh)
WO (1) WO2018133735A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106766396B (zh) * 2017-01-18 2024-04-02 上海冰鑫科技有限公司 一种钎焊板盒式蒸发器及其制作方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1905934A (zh) * 2004-05-24 2007-01-31 卡萨尔甲醇公司 板式热交换器
CN101008558A (zh) * 2006-01-24 2007-08-01 株式会社电装 热交换器
CN101858698A (zh) * 2009-04-10 2010-10-13 三花丹佛斯（杭州）微通道换热器有限公司 微通道热交换器
CN103111818A (zh) * 2013-02-03 2013-05-22 张文军 空冷器及其加工工艺
CN103575140A (zh) * 2012-07-19 2014-02-12 格伦格斯有限公司 用于电力电子设备和电池冷却的具有焊接管的紧凑型铝换热器
US20160348980A1 (en) * 2015-05-28 2016-12-01 Hamilton Sundstrand Corporation Heat exchanger with improved flow at mitered corners
CN106766396A (zh) * 2017-01-18 2017-05-31 上海冰鑫科技有限公司 一种钎焊板盒式蒸发器及其制作方法
CN206410371U (zh) * 2017-01-18 2017-08-15 上海冰鑫科技有限公司 一种钎焊板盒式蒸发器

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4520305A (en) * 1983-08-17 1985-05-28 Cauchy Charles J Thermoelectric generating system
CN205119906U (zh) * 2015-11-20 2016-03-30 上海加冷松芝汽车空调股份有限公司 一种翅片全铝钎焊式换热器
CN108225064A (zh) * 2018-03-12 2018-06-29 新乡市特美特热控技术股份有限公司 一种钎焊结构的翅片板式换热器

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1905934A (zh) * 2004-05-24 2007-01-31 卡萨尔甲醇公司 板式热交换器
CN101008558A (zh) * 2006-01-24 2007-08-01 株式会社电装 热交换器
CN101858698A (zh) * 2009-04-10 2010-10-13 三花丹佛斯（杭州）微通道换热器有限公司 微通道热交换器
CN103575140A (zh) * 2012-07-19 2014-02-12 格伦格斯有限公司 用于电力电子设备和电池冷却的具有焊接管的紧凑型铝换热器
CN103111818A (zh) * 2013-02-03 2013-05-22 张文军 空冷器及其加工工艺
US20160348980A1 (en) * 2015-05-28 2016-12-01 Hamilton Sundstrand Corporation Heat exchanger with improved flow at mitered corners
CN106766396A (zh) * 2017-01-18 2017-05-31 上海冰鑫科技有限公司 一种钎焊板盒式蒸发器及其制作方法
CN206410371U (zh) * 2017-01-18 2017-08-15 上海冰鑫科技有限公司 一种钎焊板盒式蒸发器

Also Published As

Publication number Publication date
CN106766396A (zh) 2017-05-31
CN106766396B (zh) 2024-04-02

Similar Documents

Publication Publication Date Title
CN201368619Y (zh) 一种热泵型平行流换热器
JP2007017132A (ja) 熱交換用チューブおよび熱交換器
EP3875878B1 (en) Heat exchanger and refrigeration cycle device
CN206410371U (zh) 一种钎焊板盒式蒸发器
CN207132764U (zh) 扁管、微通道换热器及制冷设备
WO2018133735A1 (zh) 一种钎焊板盒式蒸发器及其制作方法
WO2018133736A1 (zh) 用于制冷设备上的钎焊板式蒸发器或冷凝器及其制作方法
CN101762118A (zh) 电冰箱用微通道冷凝器
CN211977313U (zh) 冷凝器及制冷设备
KR20110122534A (ko) 열 교환 효율이 극대화된 이산화탄소 냉매용 열 교환기
CN206478903U (zh) 用于制冷设备上的钎焊板式蒸发器或冷凝器
WO2022220159A1 (ja) 熱交換器
US10907904B2 (en) Microchannel-type aluminum heat exchanger and method of manufacturing the same
WO2004092673A1 (en) A heat exchange pipe for a refrigerating machine
CN202281423U (zh) 一种微通道冷却蒸发装置
CN109282685A (zh) 扁管、微通道换热器、制冷设备及微通道换热器制作方法
CN205718625U (zh) 一种换热器芯体
CN102062502B (zh) 扁管换热器结构及其组装台
JPH05215482A (ja) 熱交換器
CN210861823U (zh) 一种冷却液体蒸发器
CN107351646A (zh) 用于汽车热泵空调系统的室外换热器
CN207407725U (zh) 一种高效微通道换热器结构
JP2013204913A (ja) 熱交換器
CN110701830A (zh) 一种冷却液体蒸发器
CN217082989U (zh) 新型冷媒换热器

Legal Events

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

Ref document number: 18741668

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

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 20/11/2019)

122 Ep: pct application non-entry in european phase

Ref document number: 18741668

Country of ref document: EP

Kind code of ref document: A1