EP3762652A2 - Procédé d'amélioration de l'efficacité énergétique - Google Patents

Procédé d'amélioration de l'efficacité énergétique

Info

Publication number
EP3762652A2
EP3762652A2 EP19837220.3A EP19837220A EP3762652A2 EP 3762652 A2 EP3762652 A2 EP 3762652A2 EP 19837220 A EP19837220 A EP 19837220A EP 3762652 A2 EP3762652 A2 EP 3762652A2
Authority
EP
European Patent Office
Prior art keywords
baking
oven
temperature
fan
section
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.)
Withdrawn
Application number
EP19837220.3A
Other languages
German (de)
English (en)
Other versions
EP3762652A4 (fr
Inventor
Tuba ANIK
Ehsan Amirabedin
Nurhan VATANSEVER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renta Elektrikli Ev Aletleri Sanayi Ve Dis Ticaret Ltd Sirketi
Original Assignee
Renta Elektrikli Ev Aletleri Sanayi Ve Dis Ticaret Ltd Sirketi
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 Renta Elektrikli Ev Aletleri Sanayi Ve Dis Ticaret Ltd Sirketi filed Critical Renta Elektrikli Ev Aletleri Sanayi Ve Dis Ticaret Ltd Sirketi
Publication of EP3762652A2 publication Critical patent/EP3762652A2/fr
Publication of EP3762652A4 publication Critical patent/EP3762652A4/fr
Withdrawn legal-status Critical Current

Links

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
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
    • F24C7/085—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination on baking ovens
    • 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
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/087—Arrangement or mounting of control or safety devices of electric circuits regulating heat

Definitions

  • the present invention relates to a method for controlling the energy consumption of an oven during baking.
  • the invention relates to a novel method for deactivating components such as cooling fan affecting negatively the heating course, turbo fan increasing the energy consumption of the oven as well as lamps in certain periods so as to reduce the energy consumption and improve the energy efficiency in the course of baking in built-in ovens.
  • the invention particularly, relates a method for turning on/off heating elements comprised of a primary baking section, a main baking section and a stable baking section, wherein they are operated so as to optimize the energy consumption, when the target temperature determined by a user is reached.
  • a conventional baking oven comprises a series of heating elements arranged in or near or over an oven baking chamber.
  • the baking ovens comprise at least an annular heating element, an upper heating element, a lower heating element, a cooling fan, turbo fan and lamp.
  • Ovens comprises elements, whose lid and walls' insulating properties are improved, and which reflect heat in the oven. Different types of heating elements may be employed in the oven to allow heater in the oven to emit the heat.
  • the energy consumption in ovens may vary according to how long heating elements are kept on in the course of baking. Heating elements are turned on/off my means of the thermostat for certain periods during or at the end of the baking process, thereby ensuring that the heat stored in the oven is to be employed so as to use the energy efficiently.
  • Baking cycle in built-in ovens providing fan-based baking is initialized upon the activation of heaters and fans and is continued along with the operation of heating elements depending on the thermostat, when the temperature of oven reaches the determined target temperature. In static/grill ovens without a fan support, the cycle is yet continued by only the heat. In ovens providing fan-supported baking, when the oven reaches the target temperature determined by a user, heating elements start to de/activate depending on the thermostat. Meanwhile, cooling and oven-chamber turbo fan continue to operate constantly. Oven heating elements are controlled by the thermostat. That only the thermostat provides controlling causes to consume more energy than the energy that is to be consumed during the cycle. In modes designed for energy savings, if operation periods of the heater is kept low, desired baking quality cannot be ensured and the baking time takes longer.
  • Cooling fan employed in ovens discharges efficiently the moisture and vapor occurring during the baking process as well as ensures the baking process to be completed.
  • the cooling fan required for an efficient baking must be kept active constantly during the baking process in ovens.
  • the desired heated air occurring in the baking chamber is discharged to the outside together with the vapor due to the cooling fan employed. This causes a certain amount of loss of the heat energy obtained in the oven due to the cooling fan.
  • Oven causes more energy consumption so as to compensate for the lost heat energy in its chamber with its general operation principle.
  • Ovens generally, are heated up to desired baking temperatures in advance before foods positioned therein to be baked are located.
  • the energy and passed time used in the pre-heating process of an oven cause an energy consumption increase.
  • the energy efficiency in built-in ovens is measured by means of a specific method according to Standard EN 60350-1 (House-hold electric cooking appliances; Method for measuring furnaces, ovens, vapor ovens and grills' performance) . Purpose of the test is to determine and measure the energy consumption and time required to heat the load, which is a water-logged brick simulating the thermal property and water content of foods.
  • the heating elements and cooling fan are activated/deactivated according to a per- determined algorithmic schema.
  • one or more heating elements are activated simultaneously in an alternative and/or serial manner.
  • many methods so as to activate/deactivate the heating elements and fan result in a relative more energy consumption.
  • the patent document numbered "2008/06605" has been examined within the result of the preliminary survey conducted in the state of the art.
  • the abstract section subjected to the application states that "the invention relates to an electric oven comprising an infrared resistance positioned at its upper portion so as to reduce the baking time, while allowing the energy consumed in the grill mode to be used more efficiently".
  • the cooking process comprises a pre-heating phase and arrangement step.
  • the pre-heating phase performs that the oven reaches up to desired temperature, and the upper heater and annular heater operate alternately while the fan is on. There is no information on the operation of the cooling fan therein.
  • the upper heating and lower heating elements may operate alternately by means of controller, while the conventional baking element is active. Considering the operation rate of these element, it can be seen that the conventional cooking baking element is the most active element. The fan operates in every moment in which the conventional baking element is active. However, this system applies for only the pre-heating step. There is a circuit preventing the upper heating and lower heating elements from operating together and a removeable panel turning off the lower heating element.
  • heating elements start to de/activate depending on the thermostat. Meanwhile, cooling and oven-chamber turbo fan continue to operate constantly. This period is too long along with the negative effect of the cooling fan on the heating time. Furthermore, that the oven-chamber fan and lamp operate constantly during the cycle increases the energy consumption of the oven.
  • Oven heating elements are controlled by the thermostat. That only the thermostat provides controlling causes to consume more energy than the energy that is to be consumed during the cycle.
  • the most important object of the invention is to reduce the energy consumption during a baking function and thereby to increase the energy efficiency. To this end, it is surveyed how different heating algorithms affect the energy efficiency and the most appropriate heating algorithm is determined so as to reduce the energy consumption and thereby to increase the energy efficiency.
  • Another important object of the invention is to ensure that the oven is heated in the fastest manner and reaches up to the target temperature through deactivating the cooling and (if present) oven-chamber (turbo) fan in the primary baking section. Therefore, there will be decrease in the energy consumption in the primary heating section because the time of reaching up to the target temperature is shorter.
  • Further object of the invention is to ensure more energy saving by means of preferably turning off the oven lamp because the time of the primary baking section is shorter.
  • Further object of the invention is to simulate different heating and operating types for every adjustment temperature in accordance with the definition of "static” or “Fan-supported” functions in the standard EN60350-1 so as to reduce the energy consumption and determine the most appropriate algorithm together with the time of the oven reaching up to the target temperature determined by a user.
  • the baking process is performed in three steps in a baking oven comprising at least an upper and/or annular (Turbo) heating element, a lower heating element, a cooling fan, a lamp and a turbo fan (if present) .
  • a baking oven comprising at least an upper and/or annular (Turbo) heating element, a lower heating element, a cooling fan, a lamp and a turbo fan (if present) .
  • control unit activating/deactivating different heating elements for every adjustment temperature according to the definition of related functions so as to reduce the energy consumption and determine the most appropriate algorithm together with the time of the oven reaching up to the target temperature (T set ) determined by a user.
  • the oven is comprised of a three-phase baking section. These sections are; a primary baking section (instant heating) in which the oven is heated in the fastest manner and reaches up to the target temperature (T set ) in a minimum time, a main baking section in which the energy saving is performed at a maximum level after reaching up to the desired target temperature (T set ) and a stable baking section after reaching up to the desired temperature in the brick center at the main baking section.
  • a primary baking section instant heating
  • T set target temperature
  • main baking section in which the energy saving is performed at a maximum level after reaching up to the desired target temperature (T set )
  • a stable baking section after reaching up to the desired temperature in the brick center at the main baking section.
  • the activation/deactivation time of the baking oven elements to be used as active/passive ( activation/deactivation) and the target temperature are determined by the control unit by using a functional relation set in advance and the instruction in question are applied by switching elements comprised by every oven element.
  • the activation and deactivation time of baking oven elements are determined in accordance with the desired target temperature.
  • the control unit In the primary baking section, only the upper or annular (turbo) heating element of the baking oven elements or any two of the lower heating elements are kept constantly active by the control unit. While the lamp may be active alternatively, the cooling fan and turbo fan (if present) are kept passive by the control unit in this section. Therefore, an instant heating is provided due to the fact that the oven chamber reaches up to the desired target temperature ( set ) in the fastest manner.
  • the control unit in the oven ensures that the oven is heated in the fastest manner and reaches up to the target temperature. It is ensured that the cooling and turbo fan is kept passive with the help of switching elements existing separately for each cooling and turbo fan on the control unit. In this section, only heating elements are active, however the cooling and turbo fans are passive. It takes shorter for the oven to reach up to the target temperature because it ensured that there is constantly a temperature increase and is only two heating elements being active, thereby causing decrease in the energy consumption in the primary heating section. In addition to this, since the time of the primary baking section is short, the upper heating element or annular heating element or the lower heater is activated alternative to the lamp through the heating step in the primary baking section. Because the oven lamp is deactivated in the primary baking section, more than targeted energy saving can be achieved .
  • the main baking section starts to operate.
  • the main baking section in order to decrease energy consumption; only one of the upper or annular (turbo) heating elements and the lamp and preferably the cooling fan and the turbo fan are kept active by the control unit, wherein the lower heating element is kept passive.
  • the cooling fan and/or turbo fan is activated by the control unit together with the activation of said heating element.
  • the heating element employed in the main baking section is active/passive in parallel with the cooling fan and/or turbo fan.
  • the heating element operating in the main baking section may be an upper resistance or annular (turbo) resistance based on the oven property.
  • the on/off time of the heating element (upper or annular heater) and the cooling and/or turbo fan being active/passive in parallel with the heating element chosen according to the oven type in the main baking section is calculated according to Equation 1.
  • the stable baking section In the main baking section, when the brick center temperature reaches up to the desired value, the stable baking section is initialized. In this section, until the oven reaches up to the target temperature chosen by a user, the turbo fan is activated alternatively, while the upper heater and/or annular heater and the cooling fan are adjusted by the control element in a constantly-active manner. When it is reached up to the target temperature (T set ) , the upper heater and/or annular heater and the turbo fan, if active, are operated according to the thermostat-controlled on-off instructions and the oven is maintained at the target temperature. In this section, while the cooling fan is constantly kept active, the lower heater is in a passive state.
  • the baking time and energy consumption are decreased by means of the inventive 3-phase baking function.
  • the method can be controlled by an electronic control element comprised by every oven element or a computer program or a combination thereof.
  • the baking process is performed by way of activating/deactivating every one of the oven elements through the control unit throughout the process.
  • a target temperature defined by a user is defined.
  • the primary baking section being a first phase is carried out at a temperature defined by a user in the beginning of baking, wherein the main baking section being a second phase is carried out at a second temperature that is lower than the temperature in the primary baking section and is calculated by the control unit according to the temperature in the primary baking section, wherein the stable baking section being a third phase carried out at a third temperature that is calculated by the control unit according to the temperature in the primary baking section and is greater than the second temperatures and equals to the targeted temperature value.
  • the lower heating element being passive, and the controlled operation of the cooling fan and/or turbo fan according to the operation of the heating elements, which is disclosed in Equation 1, because less power is transmitted to only one heating element, it is possible to continue to bake at a stable temperature so as to improve the baking quality in the third phase and to decrease the energy consumption at every three sections through the completion of the minimum time by means of the instant heating in the primary baking section.
  • the control unit comprises switching elements existing separately for an upper heating element or annular (turbo) heating element, a lower heating element, a cooling fan, a turbo fan and a lamp, and controlling whether each of said oven elements is active/passive and their active/passive time.
  • the time of the primary baking section (instant heating) , in which the baking process is carried out at a higher temperature, gets shorter and the time of the main baking section, in which the baking process is carried out at a lower temperature compared to the temperature of the primary baking section.
  • the energy consumption of oven will be decreased .

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Stoves And Ranges (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

L'invention concerne un nouveau procédé de désactivation de composants tels qu'un ventilateur de refroidissement affectant négativement le parcours de chauffage, un turbo-ventilateur augmentant la consommation d'énergie du four ainsi que des lampes à certaines périodes de façon à réduire la consommation d'énergie et à améliorer l'efficacité énergétique au cours de la cuisson dans des fours intégrés.
EP19837220.3A 2018-03-29 2019-03-18 Procédé d'amélioration de l'efficacité énergétique Withdrawn EP3762652A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201804424 2018-03-29
PCT/TR2019/050172 WO2020018041A2 (fr) 2018-03-29 2019-03-18 Procédé d'amélioration de l'efficacité énergétique

Publications (2)

Publication Number Publication Date
EP3762652A2 true EP3762652A2 (fr) 2021-01-13
EP3762652A4 EP3762652A4 (fr) 2021-05-05

Family

ID=69165202

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19837220.3A Withdrawn EP3762652A4 (fr) 2018-03-29 2019-03-18 Procédé d'amélioration de l'efficacité énergétique

Country Status (2)

Country Link
EP (1) EP3762652A4 (fr)
WO (1) WO2020018041A2 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4757184A (en) * 1986-12-24 1988-07-12 Swanson David L Rack loaded, radiant heated, cantilevered deck oven and method
DE10151937A1 (de) * 2001-10-22 2003-04-30 Bsh Bosch Siemens Hausgeraete Gargerät mit einer Schnellaufheizeinheit
US6943321B2 (en) * 2002-08-30 2005-09-13 Wolf Appliance Company, Llc Convection oven with forced airflow circulation zones
KR101398063B1 (ko) * 2006-09-14 2014-05-27 클리브랜드 레인지, 엘엘씨 대류 기류와 에너지 절약 특징이 있는 오븐
EP3049727A1 (fr) * 2013-09-27 2016-08-03 Arçelik Anonim Sirketi Four de cuisson possédant un ventilateur de refroidissement et procédé amélioré de commande du ventilateur de refroidissement du four de cuisson

Also Published As

Publication number Publication date
EP3762652A4 (fr) 2021-05-05
WO2020018041A3 (fr) 2020-05-22
WO2020018041A2 (fr) 2020-01-23

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