• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A cooling and heating plate, in particular for the presentation of food and drinks, on the one hand connected to a cooling unit, on the other hand, on its underside an electric heater, preferably a silicone surface heating (16) is provided. It is designed as a multilayer plate (11) with a top plate (12), preferably made of stainless steel, and an underlying aluminum plate (13). According to the invention, in the aluminum plate (13) at least one - preferably seamless and meandering curved - steel tube (14) is cast with a compressive strength of at least 50 bar. As a result, carbon dioxide can be used as a refrigerant. In the aluminum plate (13) and fastening elements (15) may be cast.
    公开号:AT518424A4
    申请号:T50817/2016
    申请日:2016-09-13
    公开日:2017-10-15
    发明作者:
    申请人:Josef Höller Gmbh；
    IPC主号:
    专利说明:

    The present invention relates to a cooling and heating plate, in particular for the presentation of food and drinks, in which the plate is connected to a cooling unit and on its underside has an electric heater, wherein the plate as a multilayer plate with a top plate preferably made of stainless steel and a underlying aluminum plate is formed.
    Such a cooling and heating plate is known from WO 2015/161332. According to this document, the cooling and heating plate consists of three layers: a top plate of chromium steel of about 1.5 mm thickness, a middle plate of aluminum of about 5 mm thickness and a bottom plate also made of chrome steel of about 1.5 mm thickness. In the middle plate coolant channels are incorporated. The connection between the middle plate and the top and bottom plate is done according to this document by rolling.
    On the underside of the lower plate, a heating mat is arranged, which is covered by a thermal and electrical insulation and sealed by a cover shell.
    Two things are disadvantageous about this plate: Firstly, the coolant channels only withstand relatively low pressures, and secondly, because of the high pressure during rolling, the coolant channels cause the top plate to not be completely flat, so that the coolant channels become recognizable if the light is incident are.
    The most promising refrigerant is currently carbon dioxide, as it has no influence on the ozone layer and has hardly any influence on the greenhouse effect compared to other refrigerants. But carbon dioxide needs high pressures, even on the low pressure side (ie after the evaporator). These pressures is not up to the known cooling and heating plate.
    It is an object of the present invention to overcome these disadvantages and to provide a cooling and heating plate whose coolant channels withstand high pressures and in which the top plate is flat.
    This object is achieved by a cooling and heating plate of the type mentioned in the present invention, that in the aluminum plate at least a steel tube is cast with a compressive strength of at least 50 bar.
    According to the invention, therefore, the coolant channels are not produced by milling the aluminum plate, but by a steel tube which is poured in the production of the aluminum plate. As a result, the heat transfer between the steel tube and the aluminum is optimal, and the compressive strength is given due to the steel tube. Overall, the heat transfer from the refrigerant to the aluminum plate is not significantly worse than in the known solution described above.
    If the steel pipe is bent in a meandering pattern, it is possible to use a single steel pipe even for large cooling and heating plates.
    Since, according to the invention, each aluminum plate is produced by casting, there is the possibility of also pouring fastening elements into the aluminum plate, so that no additional machining operations are necessary for attaching the fastening elements (for example bolts).
    In order for the steel pipe to withstand high pressures and pipe breaks are unlikely, it is preferred that the steel pipe be seamless.
    For reasons of production costs and the weight of the cooling and heating plate, the aluminum plate should be thin, on the other hand, it should be ensured that the steel pipe is sufficiently covered even with small deviations from the planned center position. According to another preferred feature, it is therefore provided that the aluminum plate has a thickness which is about twice as large as the outer diameter of the steel pipe.
    Preferably, the electric heater is a silicone surface heating, which is applied to the underside of the aluminum plate. Such silicone surface heaters are flat, provide even heat and can generate high temperatures. They are therefore well suited for the cooling and heating plates according to the invention.
    Reference to the accompanying drawings, the present invention will be explained in more detail. 1 shows a vertical section through a cooling and heating plate according to the invention; and Fig. 2 is a horizontal section through the same cooling and heating plate.
    The cooling and heating plate is a multi-layer plate 11 consisting of an aluminum plate 13 and a top plate 12. The top plate 12 carries the to be heated or cooled drinks and must therefore on the one hand from a food safe material and on the other hand look intact for years. Preferred material for the top plate 12 is stainless steel.
    In the aluminum plate 13 a meandering curved steel tube 14 is poured. This steel pipe 14 has a compressive strength of at least 50 bar and therefore can withstand the pressures that are necessary for refrigerators with carbon dioxide as a refrigerant. Since the steel pipe 14 is poured into the aluminum, the heat transfer resistance between the steel pipe 14 and the aluminum plate 13 is small. Of course, the thermal resistance of the steel pipe 14 is added between the refrigerant (e.g., carbon dioxide) and the aluminum plate 13, and this should therefore be as thin as possible. If you use a seamless steel tube 14, you can do with wall thicknesses of a maximum of 1 mm, without compromising the necessary compressive strength.
    In the aluminum plate 13 further fastening elements 15 are cast. On the underside of the aluminum plate 13, a silicone electric surface heating 16 is attached. For heating, this silicone surface heating is turned on, in which case of course the cooling unit is switched off. The coolant may remain in the steel pipe 14. Although carbon dioxide then exceeds the critical temperature, but the steel tube 14 withstands the resulting pressures.
    For temperature measurement (both heating and cooling), a Pt100 temperature sensor can be provided in the usual way, as a regulator, e.g. the controller ST121-KD1TA.03FS from STÖRK-TRONIC is suitable.
    With this cooling and heating plate, optimum temperature transfer down to -30 ° C can be achieved during cooling. The temperature of -30 ° C is used for the production of ice cream, right in front of the consumer. When heated, a temperature of up to 140 ° C can be reached so that food can be kept warm enough. The bottom of the cooling and heating plate is insulated according to requirements.
    The cooling and heating plate can be operated with carbon dioxide, so that the usual greenhouse gases can be avoided. However, it can of course be operated with all conventional refrigerants, so it is also suitable as a spare part for existing systems. Isobutane is the most suitable refrigerant for a refrigeration unit installed directly on the cooling and heating plate, which must be compact.
    The top plate 12 and the aluminum plate 13 are preferably glued together with a good heat conductive adhesive. If you connect them by rolling with each other, there is a risk that the steel tube 14 is thereby deformed, so that cross-sectional constrictions arise.
    权利要求:
    Claims (6)
    [1]
    Claims:
    1. cooling and heating plate, in particular for the presentation of food and drinks, wherein the plate is connected to a cooling unit and on its underside has an electric heater, wherein the plate as a multilayer plate (11) with a top plate (12) preferably made of Chromium nickel steel and an underlying aluminum plate (13) is formed, characterized in that in the aluminum plate (13) at least one steel tube (14) is cast with a compressive strength of at least 50 bar.
    [2]
    2. cooling and heating plate according to claim 1, characterized in that the steel tube (14) is bent meander-shaped.
    [3]
    3. cooling and heating plate according to claim 1 or 2, characterized in that in the aluminum plate (13) and fastening elements (15) are cast.
    [4]
    4. cooling and heating plate according to one of claims 1 to 3, characterized in that the steel tube (14) is seamless.
    [5]
    5. cooling and heating plate according to one of claims 1 to 4, characterized in that the aluminum plate (13) has a thickness which is about twice as large as the outer diameter of the steel pipe (14).
    [6]
    6. cooling and heating plate according to one of claims 1 to 5, characterized in that the electric heater is a silicone surface heating (16) which is applied to the underside of the aluminum plate (13).
    类似技术:
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    DE530647C|1931-07-31|Pipe walls for containers to be heated or cooled, especially for autoclaves with high internal pressure
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    同族专利:
    公开号 | 公开日
    CA3036719A1|2018-03-22|
    AT518424B1|2017-10-15|
    EP3512382B1|2020-10-21|
    PL3512382T3|2021-05-31|
    WO2018049452A1|2018-03-22|
    AU2017327751B2|2022-02-17|
    RU2019110149A|2020-10-15|
    AU2017327751A1|2019-04-18|
    RU2763282C2|2021-12-28|
    RU2019110149A3|2020-12-08|
    BR112019004808A2|2019-06-04|
    US20190223637A1|2019-07-25|
    EP3512382A1|2019-07-24|
    CN109963484A|2019-07-02|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE19504286A1|1994-02-09|1995-08-17|Technical Agency General Est|Heat exchanger cooling or heating element|
    JP2000346515A|1999-03-30|2000-12-15|Fuji Techno Kk|Cooling plate and cooling server|
    AT9559U1|2006-11-29|2007-12-15|Josef Hoeller Gmbh|COOLING AND HEATING PLATE, ESPECIALLY FOR THE PRESENTATION OF FOOD AND BEVERAGES|
    DE102009020827A1|2009-05-11|2010-11-25|Kunststoff- Und Blechverarbeitung Burkhardt Gmbh|Presentation table for cooling of fresh food on ice, has tray for flake ice, where tray inner container is present in tray outer container, and refrigerant pipes are embedded in foam insulation between inner and outer containers|
    WO2015161332A1|2014-04-23|2015-10-29|Josef Höller Gmbh|Cooling and heating plate, in particular for presenting food and beverages|
    JPS6242699B2|1978-06-28|1987-09-09|Hitachi Ltd|
    US5996842A|1998-06-24|1999-12-07|The Coca-Cola Company|Apparatus and method for dispensing a cool beverage|
    JP2003275859A|2002-03-22|2003-09-30|Takahama Industry Co Ltd|Method for producing heating plate|
    JP2004027988A|2002-06-27|2004-01-29|Usui Kokusai Sangyo Kaisha Ltd|Air-cooled type fluid cooler buried in piping|
    CN2766199Y|2004-11-12|2006-03-22|李荣斌|Bidirectional condensation plate and refrigerator employing same|
    DE102007023058A1|2007-05-16|2008-10-30|Siemens Ag|Cooling plate system has cooling plate with coolant channel, which is composed of multiple high-grade steel pipe and cooling plate is made of aluminum casting|
    US20090095455A1|2007-10-10|2009-04-16|Kyees Melvin D|Heat exchanger including fluid lines encased in aluminum|
    JP5619435B2|2010-02-26|2014-11-05|三菱重工業株式会社|Thermal storage member and manufacturing method thereof|
    CN102151818A|2011-01-31|2011-08-17|曾绍金|Design and manufacturing of water-cooling aluminum block|
    CN202793054U|2012-09-24|2013-03-13|张志平|Novel horizontal type evaporative condenser|
    RU149785U1|2014-09-19|2015-01-20|Открытое акционерное общество МТЗ ТРАНСМАШ|AIR DISTRIBUTOR FOR THE SPECIAL ROLLING STOCK OF THE METRO|CN112728865B|2020-12-24|2022-02-01|四方科技集团股份有限公司|Flat freezing plate and refrigerating system with same|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50817/2016A|AT518424B1|2016-09-13|2016-09-13|Cooling and heating plate|ATA50817/2016A| AT518424B1|2016-09-13|2016-09-13|Cooling and heating plate|
    BR112019004808A| BR112019004808A2|2016-09-13|2017-09-13|cooling and heating plate|
    CN201780068399.9A| CN109963484A|2016-09-13|2017-09-13|Cooling heating plate|
    PCT/AT2017/060227| WO2018049452A1|2016-09-13|2017-09-13|Cooling and heating plate|
    US16/332,299| US20190223637A1|2016-09-13|2017-09-13|Cooling and heating plate|
    EP17777154.0A| EP3512382B1|2016-09-13|2017-09-13|Cooling and heating plate|
    CA3036719A| CA3036719A1|2016-09-13|2017-09-13|Cooling and heating plate|
    PL17777154T| PL3512382T3|2016-09-13|2017-09-13|Cooling and heating plate|
    AU2017327751A| AU2017327751B2|2016-09-13|2017-09-13|Cooling and heating plate|
    RU2019110149A| RU2763282C2|2016-09-13|2017-09-13|Cooling and heating plate|
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