• 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:
    The invention relates to a deep fryer with a frying vessel for holding frying oil with a bottom and a side wall surrounding the interior of the frying vessel, an electric heating element which is adapted to heat the frying oil present in the frying vessel, a control element connected to the heating element controlling the electrical power supplied to the heating element, a temperature sensor connected to the control member and thermally coupled to the interior of the deep-frying vessel and having a filter, which extends substantially horizontally into the interior of the deep-frying vessel, the filter having an aperture comprises a metal plate, wherein openings are provided wherein the openings arranged in the plate are elongated, and the openings extend with a directional component transversely of the main surface of the plate and on either side of the openings the plate is deformed locally in the opposite direction in the direction across the plate.
    公开号:BE1024056B1
    申请号:E2015/0171
    申请日:2015-06-18
    公开日:2017-11-09
    发明作者:Adriaan Cornelis Ouborg
    申请人:The Bourgini Company B.V.；
    IPC主号:
    专利说明:

    Fryer with improved Filter
    The invention relates to a deep fryer which is provided with a deep-frying vessel for holding deep-frying oil with a bottom and a side wall surrounding the interior of the deep-frying vessel, an electric heating element which is adapted to heat the deep-frying oil present in the deep-frying vessel, heating element for controlling the electrical power supplied to the heating element, a temperature sensor connected to the control element and thermally coupled to the interior of the deep-frying vessel and an apertured filter extending substantially horizontally into the interior of the deep-frying vessel.
    Such fryers are generally known; they are mainly used in the household for the preparation of fried foods such as fries, croquettes or tempura. Breaded foods in particular do release crumbs during frying and these crumbs remain in the frying oil after frying. These crumbs are thus repeatedly heated, whereby they rapidly deteriorate the quality of the frying oil. To reduce these disadvantages, it is known to provide a so-called cold zone at the bottom of the frying vessel, where the crumbs collect and in which the temperature of the frying oil is lower, so that the crumbs are heated less strongly and the quality of the frying oil less Quickly wasting. To keep the temperature of the frying oil in the cold zone lower than elsewhere in the frying vessel, the heating element is always placed above the cold zone. In order to prevent the crumbs from ending up in the higher parts of the frying vessel, such a cold zone is often closed off by a filter.
    In particular when frying deep-frozen food, it does happen that, together with the food to be fried, ice and water end up in the frying oil. This not only leads to the oil splashing, but often the ice and water collects in the cold zone, where it can clump together. Such ice and water clumps can suddenly turn into steam, which can lead to the ejection of considerable quantities of hot oil, which causes a dangerous situation. The presence of filters, according to the state of the art from metal mesh, above the cold zone prevents this phenomenon, also known as an "eruption", only to a limited extent.
    To prevent these problems, JP-H-09 224 176 provides a deep fryer, comprising a deep-frying vessel for holding deep-frying oil and a side wall surrounding the interior of the deep-frying fat, an electric heating element which is arranged to hold the deep-frying vessel inside the deep-frying vessel. frying oil present, a control element connected to the heating element for controlling the electrical power supplied to the heating element, a temperature sensor connected to the control element and thermally coupled to the interior of the frying vessel and a substantially horizontal inside the frying vessel interior apertured filter comprising a metal plate, into which openings are provided, the openings provided in the plate being elongated.
    Because the openings extend with a directional component transversely to the main surface of the plate and on either side of the openings the plate is deformed locally in the opposite direction in the direction transverse to the plate.
    However, any steam bubbles can easily pass through the openings. The invention aims to provide means for making it difficult for the steam bubbles to pass through.
    This object is achieved in that the openings extend transversely to the main surface of the plate with a directional component and on either side of the openings the plate is deformed locally in the opposite direction in the direction transverse to the plate.
    According to a first embodiment, the openings arranged in the plate are elongated and the length of the openings is at least 6 mm, but preferably at least 8 mm or at least 10 mm. It is believed that the elongated shape of the openings prevents the passage of large steam bubbles. The width of the elongated openings is preferably 2 mm. With this measure, the openings work well as a filter, but the eruptions are also effectively prevented.
    Nevertheless, it may nevertheless be attractive to use an opening with a width between 3 mm and 1 mm or an opening with a width between 2.5 mm and 1.5 mm.
    As mentioned earlier, it is also assumed that the presence of a limited number of openings is important for the prevention of eruptions. An embodiment therefore provides the measure that the openings are arranged over only a part of the surface of the plate.
    A constructionally attractive embodiment provides the measure that the openings are arranged in at least one row and that the openings extend transversely to the longitudinal direction of the row.
    The openings on the top side of the plate are preferably aligned with the center of the row.
    To facilitate the collection of crumbs in the cold zone, it is preferable that the plate is provided with a recessed portion and that the openings extend only over the recessed portion of the plate. The crumbs are then easily collected in the recessed part and can then reach the cold zone through the openings.
    Movement of the crumbs towards the recessed part is promoted when parts of the plate adjoining the recessed part of the plate slope downwards towards the recessed part.
    To maintain a low temperature in the cold zone and to prevent steam bubbles from escaping via a gap between the filter and the wall of the fryer, it is preferable that the plate is contiguous to the at least one side wall of the frying vessel placed.
    In order to be able to remove the filter, for example to be able to clean the filter or to be able to drain the frying oil, it is preferred that the filter comprises a handle extending upwards from the plate, on the top of which a filter handle is arranged.
    The handle is preferably provided with a bent part at its upper end, the bent part of the handle extends over the upper edge of a side wall of the frying vessel and the filter handle extends outside the frying vessel. In this way the handle does not disturb the access to the frying vessel.
    In order to keep the cold zone sufficiently cold, it is preferred that the heating element is arranged in the frying vessel above the plate.
    The heating element preferably comprises a part extending a short distance from the filter, which part is coupled by a substantially vertically extending part to a control member which is placed substantially on the outside of the frying vessel.
    It is attractive when the fryer is provided with a frying basket, when the frying basket is adapted to be coupled to a basket handle that extends above the filter handle and when the basket handle is larger than the filter handle. This makes it possible to grip the basket handle without engaging the filter handle so that the frying basket can be handled more easily.
    The invention relates not only to a fryer, but also to a filter as part of a fryer of the type mentioned above.
    The present invention is then explained with reference to the accompanying drawings, in which:
    Figure 1: a broken away sectional view of a fryer according to the invention;
    Figure 2: a perspective view of the filter plate of the fryer shown in Figure 1;
    Figure 3: a sectional view along the line III-III in Figure 2;
    Figure 4: a schematic perspective view of an opening in the filter plate shown in Figure 2;
    Figure 5a: a sectional view along the line V-V in Figure 4;
    Figure 5b: a cross-sectional view corresponding to Figure 5a of another embodiment; and
    Figure 5c: a sectional view corresponding to Figures 5a and 5b of yet another embodiment.
    Figure 1 shows, in broken-away form, a deep fryer indicated as a whole with 1, which is provided with a deep-frying vessel 2 which is formed by a bottom 3 and a wall 4 adjoining the bottom 3 with wall parts 4a, 4b, 4c and 4d, the figure only shows the wall parts 4a, 4b and 4c. The frying vessel 2 is placed within a housing 5, also belonging to the fryer,. Below the housing 5, a base 6 is placed. Both the frying vessel 2 and the housing 5 are made of metal plate.
    A heating element 7 in the form of a tube is arranged in the frying vessel 2. The heating element 7 comprises a part 7a extending substantially horizontally in the vicinity of the bottom 3 and a vertically extending part 7b which connects to a control member accommodated in a control housing 8. The control housing is placed outside the housing 5 of the frying vessel 2. The control member 8 is adapted to control the energy supply to the heating element 7. For this purpose the control member is coupled to temperature sensors not shown in the drawing for detecting the temperature of frying oil present in the frying vessel. Furthermore, the control means is provided with a button 9 for setting the desired temperature of the frying oil, with a switch button (not shown) for switching the fryer on and off and with lights 10a, 10b for displaying the operating condition. There is also a frying basket 11 in the frying vessel 2, with which the fried foods can be removed from the frying vessel 2 after they have been fried. The fryer described so far corresponds to the state of the art.
    According to the invention a metal plate 14 provided with openings is provided in the frying vessel 2 below the heating element. It is noted that it is well known from the prior art to place a filter under the heating element. The metal plate is shown in more detail in Figures 2 and 3. The plate 14, for example made of stainless steel, has such a shape that it fits into the frying vessel 2 with little play. The plate 14 comprises a bead edge 15 at its circumference. The plate is furthermore provided with a number of openings 16. The shape of the openings is explained with reference to Figures 4 and 5. The openings 16 are arranged in four rows 17a, 17b, 17c, 17d, the rows 17a and 17c extending parallel and the rows 17b and 17d parallel extend. The rows of openings 17a, 17b, 17c and 17d form a rectangle. This rectangle forms a part 18 of the plate 14 that is lowered with respect to the bead edge 15. Oblique plate parts 19 are formed between the bead edge 15 and the rectangular lowered portion 18 of the plate 14. The rectangular, lowered part 18 of the plate 14 encloses a centrally placed rectangular plate part 20. This central rectangular plate part 20 is provided with a linear elevation 22 formed by oblique plate parts 21. The height of the linear elevation 22 corresponds approximately to the height of the bead edge 15.
    By means of brazing or resistance welding, a stem in the form of a U-shaped bent rod 25 is connected to an oblique plate part 19. The free ends of the U-shaped bent rod 25 are bent over and are connected to a filter handle 26 made of plastic, with which the filter plate 14 can be lifted out of the frying vessel 2.
    The shape of the openings will now be explained with reference to figures 4 and 5. Figure 4 shows a schematic detailed view of an opening 16. The opening here extends transversely to the main surface of the plate 14. For this purpose, the plate part 14a present on one of the sides of the opening has been moved upwards. This automatically creates two side walls 14b, 14c with a substantially triangular shape. To provide such a structure, a gap is initially punched in the plate, after which the relevant plate part is deformed by the use of correspondingly shaped stamps. It is noted that the drawing shows an angular structure for simplification; in reality, the shape of the opening and of the plate parts connecting to the opening is rather curved. Furthermore, it will be apparent that all openings in the plate are formed simultaneously in a single pass. Although it is now assumed that the provision of the slots and the deformation of the plate parts must be carried out successively, it is not excluded that these operations can take place simultaneously. Nor is it excluded that the oblique plate parts are formed simultaneously with the deformation of the plate parts connecting to the openings.
    Figure 5a schematically shows a cross-section of the opening 16. This shows that the opening 16 was created by moving the plate part present on one side of a gap upwards by deforming the relevant plate part. It is also possible to move the plate parts on both sides of the gap, namely on one side up and on the other side down. Such a situation is shown in Figure 5b. The degree of distortion of the plate can hereby be limited. Of course, the plate can also be deformed on the other side of the gap, as shown in Figure 5c. Here, the deformation is directed to the bottom of the plate to direct the opening to the same side.
    权利要求:
    Claims (13)
    [1]
    Conclusions
    Fryer comprising: - a frying vessel for holding frying oil with a bottom and a side wall surrounding the interior of the frying vessel; - an electric heating element, which is adapted to heat the frying oil present in the frying vessel; - a control member connected to the heating element for controlling the electrical power supplied to the heating element; 1 - a temperature sensor connected to the control member and thermally coupled to the interior of the frying vessel; and - an apertured filter extending substantially horizontally into the interior of the deep-frying vessel and comprising a metal plate in which openings are provided, the openings arranged in the plate being elongated, characterized in that the openings are arranged with a extend the directional component transversely to the main surface of the plate and on either side of the openings the plate is deformed locally in the opposite direction in the direction transverse to the plate.
    [2]
    Fryer according to claim 1, characterized in that the length of the opening is at least 10 mm.
    [3]
    Fryer according to claim 1 or 2, characterized in that the openings are arranged over only a part of the surface of the plate.
    [4]
    Fryer according to claim 3, characterized in that the openings are arranged in at least one row and that the openings extend transversely to the longitudinal direction of the row.
    [5]
    Fryer according to claim 4, characterized in that the openings belonging to a row on the top of the plate are directed towards the center of the row.
    [6]
    Fryer according to claim 3,4 or 5, characterized in that the plate is provided with a recessed part and that the openings only extend over the recessed part of the plate.
    [7]
    Fryer according to claim 6, characterized in that parts of the plate adjoining the recessed part of the plate are inclined downwards towards the recessed part.
    [8]
    A fryer according to any one of the preceding claims, characterized in that the plate is placed adjacent to the side wall of the frying vessel. I
    [9]
    Fryer according to one of the preceding claims, characterized in that the filter comprises a handle extending upwards from the plate, on the top of which a filter handle is arranged.
    [10]
    10. Deep fryer according to claim 9, characterized in that at its upper end the handle is provided with a bent part, that the bent part of the handle extends over the upper edge of the side wall of the frying vessel and that the filter handle extends outside the frying vessel. Fryer according to one of the preceding claims, characterized in that the heating element is arranged in the frying vessel above the plate.
    [12]
    Fryer according to claim 11, characterized in that the heating element comprises a part extending a short distance from the filter, which part is coupled by a substantially vertical extending part to a control member which is placed substantially on the outside of the frying vessel.
    [13]
    13. Deep fryer according to claim 12, characterized in that the deep fryer is provided with a frying basket, that the deep frying basket is adapted to be coupled to a basket handle that extends above the fi lter handle and that the basket handle is larger than the filter handle.
    [14]
    A filter as part of a fryer according to any one of the preceding claims.
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    同族专利:
    公开号 | 公开日
    BE1024056A1|2017-11-08|
    NL2013024B1|2016-07-06|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5143604A|1990-05-22|1992-09-01|Filtercorp, Inc.|One-way guided filter pad assembly|
    WO2009014562A1|2007-07-26|2009-01-29|Frymaster, L.L.C.|Shortening saving fryer with automatic filtration|
    US20110288319A1|2010-05-20|2011-11-24|Tlp Investments Llc|Filter for deep fryer|
    WO2012048381A1|2010-10-15|2012-04-19|Breville Pty Limited|Improved fryer with removable filter|
    法律状态:
    2018-02-08| FG| Patent granted|Effective date: 20171109 |
    2021-04-19| MM| Lapsed because of non-payment of the annual fee|Effective date: 20200630 |
    优先权:
    申请号 | 申请日 | 专利标题
    NL2013024A|NL2013024B1|2014-06-18|2014-06-18|Fryer with improved filter.|
    NL2013024|2014-06-18|
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