EP2702910B1 - Un canal de vapeur pour un système d'échappement d'un appareil de cuisson à vapeur - Google Patents
Un canal de vapeur pour un système d'échappement d'un appareil de cuisson à vapeur Download PDFInfo
- Publication number
- EP2702910B1 EP2702910B1 EP20120182017 EP12182017A EP2702910B1 EP 2702910 B1 EP2702910 B1 EP 2702910B1 EP 20120182017 EP20120182017 EP 20120182017 EP 12182017 A EP12182017 A EP 12182017A EP 2702910 B1 EP2702910 B1 EP 2702910B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steam
- channel
- steam channel
- flap
- appliance
- Prior art date
- Legal status (The legal status 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 status listed.)
- Not-in-force
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2042—Devices for removing cooking fumes structurally associated with a cooking range e.g. downdraft
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
- F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation
- F24C15/327—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation with air moisturising
Definitions
- the present invention relates to a steam channel for an exhaust system of a steam appliance. Further, the present invention relates to an exhaust system for a steam appliance. Moreover, the present invention relates to a steam appliance.
- a steam appliance for example a steam cooking appliance, comprises typically an exhaust system with a steam channel.
- said steam channel is arranged between a cavity and an air channel.
- the steam channel is provided for discharging steam from the cavity via the air channel out of the appliance.
- the steam channel has to be closed during the steaming phase.
- the steam channel has to be opened, if an overpressure occurs in the cavity.
- the overpressure has to be released in order to avoid an opening of the cavity door.
- the steam channel has to be opened for activating the de-steaming phase after the steaming phase.
- FIG 7 illustrates a perspective exploded view of the steam channel for the exhaust system according to the prior art.
- the exhaust system of the prior art is also provided for the steam appliance.
- the elongated steam channel extends horizontally and is provided for an arrangement above a cavity of the steam appliance.
- the steam channel includes an upper channel part 50 and a lower channel part 52.
- the upper channel part 50 and the lower channel part 52 form the housing of the steam channel.
- the steam channel includes an adapter 60 at a bottom side of the lower channel part 52.
- the adapter 60 is provided for connecting an inlet 64 to the cavity of the steam appliance.
- the steam channel includes a wax actuator 54 and an actuator housing 56 on a top side of the upper channel part 50.
- the wax actuator 54 and the actuator housing 56 are arranged above the inlet 64.
- the wax actuator 54 is connected to a valve head 58 for closing the inlet 64.
- the inlet 64 is formed in the bottom side of the lower channel part 52.
- An outlet 62 is formed in the top side of the upper channel part 50.
- the outlet 62 is connected to an air channel.
- the opening and closing of the steam channel is performed by a linear motion of the wax actuator 54.
- FIG 8 illustrates a sectional side view of the steam channel in a closed state according to the prior art.
- the valve head 58 In the closed state the valve head 58 is pressed down by the wax actuator 54, so that the valve head 58 closes the inlet 64.
- FIG 9 illustrates a sectional side view of the steam channel in an open state according to the prior art.
- the valve head 58 In the open state the valve head 58 is retracted by the wax actuator 54, so that the inlet 64 is open.
- the process of opening and closing the steam channel requires about one minute.
- the steam channel is closed. Only in the de-steaming phase the steam channel is open. In the de-steaming phase the steam will be sucked out of the cavity through the steam channel up to the air channel and out of the appliance by a fan in the air channel.
- the valve head 58 comprises a number of holes, so that an overpressure in the cavity can be released in the closed state. However, these holes are always open and cause a permanent loss of steam. The lost steam has to be produced additionally by the steam generator, so that the energy consumption increases.
- the object of the present invention is achieved by the steam channel for an exhaust system of a steam appliance according to claim 1.
- the present invention relates to a steam channel for an exhaust system of a steam appliance, wherein
- the main idea of the present invention is the pivoting flap, which lever arms generate approximately a balance, so that the inlet is closable by the gravity of the cover element on the one hand and the inlet is openable by a small overpressure in the cavity on the other hand. Additionally, the inlet is openable by the actuator.
- the opening by the actuator requires no overpressure.
- the opening by the actuator is preferably used for activating the de-steaming phase.
- the opening times of the steam channel are very short. There is no loss of steam, when the steam channel is closed. Only the steam effecting overpressure is lost. The heating up time of the steam appliance is reduced.
- the elongated flap extends in parallel to the longitudinal axis of the housing.
- the flap may be relative long, so that the torque can be exactly adjusted.
- the cover element is arranged at one end of the flap.
- the cover element is formed as a circular disk.
- the flap and the cover element form a single-piece part.
- the steam channel may include a support element arranged inside the housing, wherein said support element and the flap form a hinge.
- the torque generated by the lever arms of the flap causes a force between 0.01 N and 0.02 N, in particular 0.012 N, which has to be overcome by the overpressure in the cavity in order to open the inlet.
- the small force allows a short time for opening and closing the inlet of the steam channel.
- the actuator is an electric actuator including at least one servo motor.
- the present invention relates to an exhaust system for a steam appliance.
- the exhaust system includes a steam channel and air channel, wherein the steam channel is interconnected between a cavity of the steam appliance and the air channel, and wherein the exhaust system includes the steam channel mentioned above.
- the air channel comprises at least one fan.
- the air channel is arranged above the steam channel and connected to the outlet of said steam channel.
- the present invention relates to a steam appliance including an exhaust system with a steam channel and an air channel, wherein the steam channel is interconnected between a cavity of the steam appliance and the air channel, and wherein the steam appliance includes the steam channel described above.
- the present invention relates to a steam appliance including an exhaust system with a steam channel and an air channel, wherein the steam channel is interconnected between a cavity of the steam appliance and the air channel, and the steam appliance includes the exhaust system mentioned above.
- the steam appliance is a steam cooking appliance.
- FIG 1 illustrates a perspective exploded view of a steam channel for the exhaust system according to a preferred embodiment of the present invention.
- the exhaust system is provided for a steam appliance.
- the elongated steam channel extends horizontally and is provided for an arrangement above a cavity 24 of the steam appliance.
- the steam channel includes an upper channel part 10 and a lower channel part 12.
- the upper channel part 10 and the lower channel part 12 enclose the interior 36 of the steam channel.
- a support element 18 and an elongated flap 20 are arranged in the interior 36 of the steam channel.
- the steam channel includes an adapter 22 at a bottom side of the lower channel part 12.
- the steam channel includes an actuator 14 and an actuator housing 16 on a top side of the upper channel part 10.
- the actuator 14 and the actuator housing 16 are arranged above the adapter 22.
- An inlet 38 is arranged in the one end portion of the steam channel, and an outlet 34 is arranged in the other end portion of the steam channel.
- the inlet 38 is formed in the bottom side of the lower channel part 12.
- the outlet 34 is formed in the top side of the upper channel part 10.
- the support element 18 is fastened at a central portion of a bottom side of the upper channel part 10.
- the flap 20 is pivoting at said support element 18.
- the support element 18 and the flap 20 form a hinge.
- the flap 20 extends substantially in parallel to the interior 36 of the steam channel.
- a pivoting axis of the flap 20 is horizontal and extends perpendicular to its longitudinal axis.
- the flap 20 includes a cover element 40 at one end. Said cover element 40 corresponds with the inlet 38 of the lower channel part 12.
- the inlet 30 is opened and closed by pivoting the flap 20. In the closed state the cover element 40 covers the inlet 38. In the open state the cover element 40 is lifted up from the inlet 38.
- the actuator housing 16 is fastened on the top side of the upper channel part 10.
- the actuator 14 is arranged inside the actuator housing 16.
- the actuator 14 is provided for pivoting the flap 20, so that the cover element 40 is lifted up from the inlet 38 and the steam channel is opened.
- the actuator 14 is an electric actuator including a servo motor.
- the adapter 22 is provided for connecting the inlet 38 to the cavity of the steam appliance.
- FIG 2 illustrates a sectional side view of the steam channel for the exhaust system according to the preferred embodiment of the present invention.
- FIG 2 clarifies the arrangements of the components of the steam channel.
- the flap 20 is in an open state.
- the steam from the cavity 24 enters the interior 36 of the steam channel through the inlet.
- the cover element 40 of the flap 20 is spaced from the inlet 38, so the steam can pass said cover element 40.
- the steam flows horizontally in the interior 36 of the steam channel. In FIG 2 the steam flows from the right hand side to the left hand side. The steam leaves the interior 36 of the steam channel through the outlet 34.
- the steam channel is arranged between the cavity 24 and an air channel 26.
- the main function of the steam channel is the control of the presence and the amount of the steam in the cavity 24.
- the steam appliance has several operation phases, in which the steam is partly or completely used.
- a fan in the air channel 26 sucks the steam out of the cavity 24 through the interior 36 of the steam channel. Subsequently, the steam is blown out through the air channel 26 to the environment.
- FIG 3 illustrates a sectional side view of a part of the steam channel in a closed state according to the preferred embodiment of the present invention.
- FIG 3 clarifies the arrangement of the steam channel between the cavity 24 and the air channel 26.
- the inlet 38 of the steam channel is connected to the cavity 24 via the adapter 22.
- the outlet 34 of the steam channel is directly connected to the air channel 26.
- the air channel 26 includes a fan motor 28 and a fan wheel 30.
- the flap 20 is in a closed state.
- the cover element 40 covers the inlet 38 of the steam channel.
- the closed state of the flap 20 is caused by the gravity of the cover element 40, but not by the actuator 14.
- the complete amount of the steam remains in the cavity 24.
- a steam generator is activated and deactivated in dependence of the temperature in the cavity 24. When the temperature in the cavity 24 falls below a predetermined value, then the steam generator is activated. The generation of steam leads to an increasing temperature and pressure. In order to avoid a critical over pressure in the cavity 24, the flap 20 is pivoted by the pressure, so that the cover element 40 is lifted up in order to open the inlet 38 of the steam channel.
- FIG 4 illustrates a sectional side view of a part of the steam channel in a first operation mode according to the preferred embodiment of the present invention.
- the first operation mode is the open state caused by the overpressure in the cavity 24.
- the pivotable flap 20 comprises two lever arms generating torques. The difference between said torques is very small, so that a small overpressure in the cavity 24 is sufficient to lift up the cover element 40 immediately.
- the force for lifting up the cover element 40 is between 0.01 N and 0.02 N, in particular about 0.012 N.
- the overpressure will be released.
- the flap 20 is closed again by the gravity of the cover element 40.
- the pivotable flap 20 allows a very fast opening and closing of the steam channel.
- the fast opening of the steam channel allows that the turn-on phases of the steam generator are reduced. This results in a significant reduction of the energy consumption by the steam generator. Compared with the prior art shown in FIG 7 to FIG 9 , the energy consumption of the steam generator is reduced about 15 %.
- FIG 5 illustrates a sectional side view of the steam channel in a second operation mode according to the preferred embodiment of the present invention.
- Two arcuated arrows 32 represent the pivoting motions of the flap 20.
- the steam channel is opened by the actuator 14.
- the actuator 14 pivots the flap 20, so that the cover element 40 is lifted up.
- the opening and closing of the steam channel is independent of the pressure in the cavity 24.
- the second operation mode allows a permanently open steam channel.
- FIG 6 illustrates a sectional side view of a part of the steam channel in the second operation mode according to the preferred embodiment of the present invention.
- FIG 6 clarifies the arrangement of the steam channel between the cavity 24 and the air channel 26.
- the permanently open steam channel is provided for a de-steaming phase during or in the end of the steaming process.
- the de-steaming phase starts in the end of the steaming process.
- the steam will be sucked out of the cavity 24 through the steam channel up to the air channel 26 and out of the appliance.
- the fan motor 28 in the air channel 26 is running during the whole steaming process, the de-steaming phase and an additional time in order to cool down the cavity 24 to a predetermined temperature.
- the steam channel according to the present invention is closed by the gravity of the flap 20, so that the cover element 40 closes the inlet 39 of said steam channel. Further, the steam channel according to the present invention is opened either by the overpressure in the cavity 24 or by the actuator 14. The opening of the steam channel by the overpressure in the cavity 24 is normally of short duration in order to release said overpressure. The opening of the steam channel by the actuator 14 is preferably used for activating the de-steaming phase.
- the steam channel according to the present invention has several advantages.
- the opening time of the steam channel is very short. There is no loss of steam, when the steam channel is closed. Only the steam effecting overpressure is lost. The heating up time of the steam appliance is reduced.
- the steam channel comprises two different opening modes, the one by overpressure and the other one by the actuator.
- the reaction time for opening and closing can be modified by the relation between the lever arms of the flap 20.
- FIG 7 illustrates a perspective exploded view of the steam channel for the exhaust system according to the prior art.
- the exhaust system of the prior art is also provided for the steam appliance.
- the elongated steam channel extends horizontally and is provided for an arrangement above a cavity of the steam appliance.
- the steam channel includes an upper channel part 50 and a lower channel part 52.
- the upper channel part 50 and the lower channel part 52 form the housing of the steam channel.
- the steam channel includes an adapter 60 at a bottom side of the lower channel part 52.
- the adapter 60 is provided for connecting an inlet 64 to the cavity of the steam appliance.
- the steam channel includes a wax actuator 54 and an actuator housing 56 on a top side of the upper channel part 50.
- the wax actuator 54 and the actuator housing 56 are arranged above the inlet 64.
- the wax actuator 54 is connected to a valve head 58 for closing the inlet 64.
- the inlet 64 is formed in the bottom side of the lower channel part 52.
- An outlet 62 is formed in the top side of the upper channel part 50.
- the outlet 62 is connected to an air channel.
- the opening and closing of the steam channel is performed by a linear motion of the wax actuator 54.
- FIG 8 illustrates a sectional side view of the steam channel in a closed state according to the prior art.
- the valve head 58 In the closed state the valve head 58 is pressed down by the wax actuator 54, so that the valve head 58 closes the inlet 64.
- FIG 9 illustrates a sectional side view of the steam channel in an open state according to the prior art.
- the valve head 58 In the open state the valve head 58 is retracted by the wax actuator 54, so that the inlet 64 is open.
- the process of opening and closing the steam channel requires about one minute. During the steaming phases the steam channel is closed. Only in the de-steaming phase the steam channel is open. In the de-steaming phase the steam will be sucked out of the cavity through the steam channel up to the air channel and out of the appliance by a fan in the air channel.
- the valve head 58 comprises a number of holes, so that an overpressure in the cavity can be released in the closed state.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cookers (AREA)
Claims (15)
- Conduit de vapeur pour système d'échappement d'un appareil à vapeur,- le conduit de vapeur comprenant un boîtier allongé (10, 12) destiné à une disposition horizontale au-dessus d'une cavité (24) de l'appareil à vapeur,- une entrée (38) étant formée dans une face inférieure de one partie d'extrémité du boîtier (10, 12),- l'entrée (38) étant reliée ou pouvant être reliée à la cavité (24) de l'appareil à vapeur,- une sortie (34) étant formée dans une face supérieure d'une autre partie d'extrémité du boîtier (10, 12),- un volet allongé (20) étant disposé à l'intérieur du boîtier (10, 12),- le volet (20) étant en liaison pivot avec l'intérieur du boîtier (10, 12) et comportant deux bras à levier,- un axe de pivotement du volet (20) s'étendant horizontalement et perpendiculairement à l'axe longitudinal du volet (20),- le volet (20) comportant un élément (40) de couvercle servant à ouvrir et à fermer l'entrée (38),- les bras à levier du volet (20) générant un couple, de telle façon que l'entrée (38) soit fermée ou puisse être fermée par la pesanteur de l'élément (40) de couvercle d'une part et que l'entrée (38) soit ouverte ou puisse être ouverte par une surpression dans la cavité (24) d'autre part, et- le conduit de vapeur comprenant un actionneur (14) servant à faire pivoter le volet (20), de telle façon que l'entrée (38) soit ouverte ou puisse être ouverte par l'actionneur (14).
- Conduit de vapeur selon la revendication 1,
caractérisé en ce que
le volet allongé (20) s'étend parallèlement à l'axe longitudinal du boîtier (10, 12). - Conduit de vapeur selon la revendication 1 ou 2,
caractérisé en ce que
l'élément (40) de couvercle est disposé à une extrémité du volet (20). - Conduit de vapeur selon l'une quelconque des revendications précédentes,
caractérisé en ce que
l'élément (40) de couvercle est formé comme un disque circulaire. - Conduit de vapeur selon l'une quelconque des revendications précédentes,
caractérisé en ce que
le volet (20) et l'élément (40) de couvercle forment une pièce d'un seul tenant. - Conduit de vapeur selon l'une quelconque des revendications précédentes,
caractérisé en ce que
le conduit de vapeur comprend un élément (18) d'appui disposé à l'intérieur du boîtier (10, 12), ledit élément (18) d'appui et le volet (20) formant une articulation. - Conduit de vapeur selon l'une quelconque des revendications précédentes,
caractérisé en ce que
le couple généré par les bras à levier du volet (20) engendrant une force comprise entre 0,01 N et 0,02 N, en particulier 0,012 N, qui doit être vaincue par la surpression dans la cavité (24) afin d'ouvrir l'entrée (38). - Conduit de vapeur selon l'une quelconque des revendications précédentes,
caractérisé en ce que
l'actionneur (14) est un actionneur électrique comprenant au moins un servomoteur. - Conduit de vapeur selon l'une quelconque des revendications précédentes,
caractérisé en ce que
la fermeture de l'entrée (38) par la pesanteur de l'élément (40) de couvercle est bloquée si ladite entrée (38) est ouverte par l'actionneur (14). - Système d'échappement d'un appareil à vapeur comprenant un conduit de vapeur et un conduit d'air, le conduit de vapeur étant interconnecté entre une cavité de l'appareil à vapeur et le conduit d'air,
caractérisé en ce que
le système d'échappement comprend le conduit de vapeur selon l'une quelconque des revendications 1 à 9. - Système d'échappement selon la revendication 10,
caractérisé en ce que
le conduit d'air comporte au moins un ventilateur (28, 30). - Système d'échappement selon la revendication 10 ou 11,
caractérisé en ce que
le conduit d'air est disposé au-dessus du conduit de vapeur et relié à la sortie (34) dudit conduit de vapeur. - Appareil à vapeur comprenant un système d'échappement doté d'un conduit de vapeur et d'un conduit d'air, le conduit de vapeur étant interconnecté entre une cavité de l'appareil à vapeur et le conduit d'air,
caractérisé en ce que
l'appareil à vapeur comprend le conduit de vapeur selon l'une quelconque des revendications 1 à 9. - Appareil à vapeur comprenant un système d'échappement doté d'un conduit de vapeur et d'un conduit d'air, le conduit de vapeur étant interconnecté entre une cavité de l'appareil à vapeur et le conduit d'air,
caractérisé en ce que
l'appareil à vapeur comprend le système d'échappement selon l'une quelconque des revendications 10 à 12. - Appareil à vapeur selon la revendication 13 ou 14,
caractérisé en ce que
l'appareil à vapeur est un appareil de cuisson à la vapeur.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20120182017 EP2702910B1 (fr) | 2012-08-28 | 2012-08-28 | Un canal de vapeur pour un système d'échappement d'un appareil de cuisson à vapeur |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20120182017 EP2702910B1 (fr) | 2012-08-28 | 2012-08-28 | Un canal de vapeur pour un système d'échappement d'un appareil de cuisson à vapeur |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2702910A1 EP2702910A1 (fr) | 2014-03-05 |
EP2702910B1 true EP2702910B1 (fr) | 2014-10-01 |
Family
ID=46727132
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20120182017 Not-in-force EP2702910B1 (fr) | 2012-08-28 | 2012-08-28 | Un canal de vapeur pour un système d'échappement d'un appareil de cuisson à vapeur |
Country Status (1)
Country | Link |
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EP (1) | EP2702910B1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109222670A (zh) * | 2018-09-30 | 2019-01-18 | 珠海格力电器股份有限公司 | 烹饪器具及烹饪器具的控制方法 |
CN110169709A (zh) * | 2019-06-06 | 2019-08-27 | 九阳股份有限公司 | 蒸汽加热式烹饪器具 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108338655B (zh) * | 2017-01-23 | 2024-04-09 | 浙江苏泊尔家电制造有限公司 | 烹饪器具 |
CN108338656B (zh) * | 2017-01-23 | 2024-04-09 | 浙江苏泊尔家电制造有限公司 | 烹饪器具 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1975516B1 (fr) * | 2007-03-29 | 2012-05-02 | Electrolux Home Products Corporation N.V. | Four de cuisson et son procédé de fonctionnement |
-
2012
- 2012-08-28 EP EP20120182017 patent/EP2702910B1/fr not_active Not-in-force
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109222670A (zh) * | 2018-09-30 | 2019-01-18 | 珠海格力电器股份有限公司 | 烹饪器具及烹饪器具的控制方法 |
CN109222670B (zh) * | 2018-09-30 | 2020-11-10 | 珠海格力电器股份有限公司 | 烹饪器具及烹饪器具的控制方法 |
CN110169709A (zh) * | 2019-06-06 | 2019-08-27 | 九阳股份有限公司 | 蒸汽加热式烹饪器具 |
CN110169709B (zh) * | 2019-06-06 | 2021-04-09 | 九阳股份有限公司 | 蒸汽加热式烹饪器具 |
Also Published As
Publication number | Publication date |
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EP2702910A1 (fr) | 2014-03-05 |
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