WO2001051856A1 - Method and device for cleaning an oven - Google Patents

Method and device for cleaning an oven Download PDF

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Publication number
WO2001051856A1
WO2001051856A1 PCT/NL2001/000014 NL0100014W WO0151856A1 WO 2001051856 A1 WO2001051856 A1 WO 2001051856A1 NL 0100014 W NL0100014 W NL 0100014W WO 0151856 A1 WO0151856 A1 WO 0151856A1
Authority
WO
WIPO (PCT)
Prior art keywords
cleaning agent
container
cleaning
heating
appliance
Prior art date
Application number
PCT/NL2001/000014
Other languages
French (fr)
Inventor
Johan Adam Buijs
Original Assignee
Levens Group B.V.
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 Levens Group B.V. filed Critical Levens Group B.V.
Priority to AU2001234219A priority Critical patent/AU2001234219A1/en
Publication of WO2001051856A1 publication Critical patent/WO2001051856A1/en

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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
    • F24C14/00—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning
    • F24C14/005—Stoves or ranges having self-cleaning provisions, e.g. continuous catalytic cleaning or electrostatic cleaning using a cleaning liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 

Definitions

  • the invention relates to a method for cleaning the interior of a heating appliance.
  • Heating appliances particularly appliances which are used for preparing food, such as ovens, must meet very stringent standards in respect of hygiene, and must therefore be cleaned regularly. Heretofore this has usually taken place manually or by applying separate cleaning systems incorporated in the oven. Both methods are relatively costly as a result of high labour costs respectively the additional investment cost.
  • the invention therefore has for its object to provide a simplified method for cleaning a heating appliance. This is achieved according to the invention by distributing a cleaning agent therein, allowing this cleaning agent to take effect and removing the cleaning agent and contaminants dissolved thereby.
  • the heating appliance is thus cleaned automatically and uniformly, without intervention of personnel and without expensive provisions being required for this purpose.
  • the cleaning agent is preferably introduced into the interior of the heating appliance by increasing the pressure in a container containing the cleaning agent.
  • the pressure in the container can herein advantageously be increased by placing the container in the heating appliance and subsequently activating the heating appliance. The cleaning agent is thus pressed automatically out of the container.
  • the cleaning agent escaping from the container due to the pressure increase is preferably distributed in the interior of the heating appliance by means present in the heating appliance for distributing the generated heat. A good distribution of the cleaning agent can thus be ensured without special provisions.
  • the invention also relates to a container for a cleaning agent which is intended for use in the method as described above.
  • a container for a cleaning agent which is intended for use in the method as described above.
  • Such a container can be provided with at least one outlet opening and means for connecting the outlet opening to means forming part of a heating appliance for distributing heat generated therein.
  • the container can thus be simply connected to the heat distributing means already present in the appliance .
  • this latter is preferably further provided with a suction line connected to the outlet opening and extending in the interior of the container.
  • the invention further relates to a heating appliance, in particular an oven, provided with means for heating the interior of the appliance and means connected to the heating means for distributing the generated heat, wherein for performing the above described method the heat distributing means are adapted to distribute in the interior of the appliance a cleaning agent introduced therein.
  • a heating appliance preferably has means connected to the heat distributing means for connecting a container with cleaning agent .
  • the heat distributing means advantageously comprise at least one fan, in addition to at least one suction opening for the cleaning agent connected to the fan.
  • Fig. 1 shows a partly cross-sectional side view of a container for use in the method according to the invention
  • Fig. 2 is a top view of a heating appliance which is cleaned using cleaning agent from the container of fig. 1 placed therein, and Fig. 3 shows a view along the line III-III in fig. 2.
  • a heating appliance 1 (fig. 2) comprises a housing 2 in which a preparation space 4 closable by a door 3 is defined. This preparation space 4 is separated by a wall 5 from a machine space 6. In addition to a burner and heat exchangers (not shown here) for generating hot air and/or steam (likewise not shown here) , there is also accommodated in this machine space 6 the drive 7 for a fan 8 with which the hot air can be distributed in preparation space 4.
  • This fan 8 is disposed behind an air distributing plate 9 in which is defined a central suction opening 10 with a grid 11 in front of it.
  • the air distributing plate 9 does not extend over the whole depth and height of preparation space 4, so that gaps 12 are still left clear along all sides of air distributing plate 9 through which fan 8 can blow air back into preparation space 4.
  • Formed roughly in the centre of grid 11 is a suction opening 13 which is adapted for connection to an outlet opening 14 of a container 16 filled with cleaning liquid 15.
  • the outlet opening 14 is formed in the outer end of a suction line 17, which is placed through a plug 18 on the upper side of container 16 and which extends to a position close to the bottom 19 thereof (fig. 1) .
  • container 16 is filled with a suitably chosen quantity of cleaning agent 15, in this case liquid oven cleaner, and then closed by means of plug 18.
  • the closed container 16 is placed in the still cold preparation space 4 of heating appliance 1, wherein outlet opening 14 of the suction line 17 is connected to the suction opening 13 in the centre of the air distributing plate 9 in front of fan 8.
  • Door 3 is then closed and the cleaning program of the heating appliance 1 is started.
  • the temperature and the air humidity in preparation space 4 are herein raised, so that a pressure increase results in container 16, whereby the liquid 15 is pressed therefrom via suction line 17 and outlet opening 14.
  • Tis liquid is then drawn via suction opening 13 into the fan 8 and, just as the heat, is distributed over the whole preparation space 4, and particularly the walls thereof.
  • the indrawn liquid 15 is herein atomized by the fan.
  • the temperature and air humidity can herein be increased in different steps.
  • the degree of filling of container 16 is herein chosen such that it becomes empty just as the cleaning program finishes .
  • the cleaning agent 15 After the cleaning agent 15 is distributed in preparation space 4 it is given some time to soak in, whereafter the humidity and the temperature in preparation space 4 are increased again, so that the cleaning agent 15 flows off the walls and the dissolved contaminants also run off the walls. Water is then injected into preparation space 4 so that the walls are rinsed and the dissolved contaminants disappear into the drain.
  • the method and the cleaning system according to the invention therefore have various advantages compared to older methods and systems for cleaning heating appliances such as ovens.
  • the system is thus simple to use, the container is easy to place and the whole is durable.
  • the cleaning moreover takes place automatically, so it can take place when the oven is not in use. This will hereby also be done more regularly in practice, thus enhancing hygiene.
  • only that quantity of cleaning agent determined by the degree of contamination is used, whereby savings can be made.
  • the cleaning agent could thus be urged out of the container in a manner other than by heating, while it could also be distributed in the interior of the heating appliance with other means.
  • the configuration of the container and the connection thereof to the heating appliance could also differ from that shown and described here .
  • the scope of the invention is therefore defined solely by the appended claims .

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Abstract

The invention relates to a method for cleaning the interior of a heating appliance (1), by distributing a cleaning agent therein, allowing this cleaning agent to take effect and removing the cleaning agent and contaminants dissolved thereby. The cleaning agent can herein be introduced into the interior of the heating appliance (1) by increasing the pressure in a container (16) containing the cleaning agent, for instance by placing the container in the heating appliance (1) and subsequently activating the heating appliance (1). The invention further relates to a container (16) for a cleaning agent intended for application in such a method. The invention finally relates to a heating appliance (1) provided with means for heating the interior of the appliance and means connected to the heating means for distributing the generated heat, which heat distributing means are adapted to distribute in the interior of the appliance a cleaning agent introduced therein.

Description

METHOD AND BEv CE FOR CLEANING AN OVEN
The invention relates to a method for cleaning the interior of a heating appliance.
Heating appliances, particularly appliances which are used for preparing food, such as ovens, must meet very stringent standards in respect of hygiene, and must therefore be cleaned regularly. Heretofore this has usually taken place manually or by applying separate cleaning systems incorporated in the oven. Both methods are relatively costly as a result of high labour costs respectively the additional investment cost.
In addition, manual cleaning of an oven is a time- consuming and disagreeable task, which moreover involves the risk of exposure to cleaning agents. Manual cleaning of ovens is therefore performed less regularly in practice than would be desirable on the basis of the contamination .
The invention therefore has for its object to provide a simplified method for cleaning a heating appliance. This is achieved according to the invention by distributing a cleaning agent therein, allowing this cleaning agent to take effect and removing the cleaning agent and contaminants dissolved thereby. The heating appliance is thus cleaned automatically and uniformly, without intervention of personnel and without expensive provisions being required for this purpose.
The cleaning agent is preferably introduced into the interior of the heating appliance by increasing the pressure in a container containing the cleaning agent. The pressure in the container can herein advantageously be increased by placing the container in the heating appliance and subsequently activating the heating appliance. The cleaning agent is thus pressed automatically out of the container.
The cleaning agent escaping from the container due to the pressure increase is preferably distributed in the interior of the heating appliance by means present in the heating appliance for distributing the generated heat. A good distribution of the cleaning agent can thus be ensured without special provisions.
The invention also relates to a container for a cleaning agent which is intended for use in the method as described above. Such a container can be provided with at least one outlet opening and means for connecting the outlet opening to means forming part of a heating appliance for distributing heat generated therein. The container can thus be simply connected to the heat distributing means already present in the appliance .
To enable use of the entire contents of the container, this latter is preferably further provided with a suction line connected to the outlet opening and extending in the interior of the container.
Finally, the invention further relates to a heating appliance, in particular an oven, provided with means for heating the interior of the appliance and means connected to the heating means for distributing the generated heat, wherein for performing the above described method the heat distributing means are adapted to distribute in the interior of the appliance a cleaning agent introduced therein. Such a heating appliance preferably has means connected to the heat distributing means for connecting a container with cleaning agent . The heat distributing means advantageously comprise at least one fan, in addition to at least one suction opening for the cleaning agent connected to the fan.
The invention will now be elucidated on the basis of an embodiment, wherein reference is made to the annexed drawing, in which:
Fig. 1 shows a partly cross-sectional side view of a container for use in the method according to the invention,
Fig. 2 is a top view of a heating appliance which is cleaned using cleaning agent from the container of fig. 1 placed therein, and Fig. 3 shows a view along the line III-III in fig. 2.
A heating appliance 1 (fig. 2) comprises a housing 2 in which a preparation space 4 closable by a door 3 is defined. This preparation space 4 is separated by a wall 5 from a machine space 6. In addition to a burner and heat exchangers (not shown here) for generating hot air and/or steam (likewise not shown here) , there is also accommodated in this machine space 6 the drive 7 for a fan 8 with which the hot air can be distributed in preparation space 4.
This fan 8 is disposed behind an air distributing plate 9 in which is defined a central suction opening 10 with a grid 11 in front of it. The air distributing plate 9 does not extend over the whole depth and height of preparation space 4, so that gaps 12 are still left clear along all sides of air distributing plate 9 through which fan 8 can blow air back into preparation space 4. Formed roughly in the centre of grid 11 is a suction opening 13 which is adapted for connection to an outlet opening 14 of a container 16 filled with cleaning liquid 15.
In the shown embodiment the outlet opening 14 is formed in the outer end of a suction line 17, which is placed through a plug 18 on the upper side of container 16 and which extends to a position close to the bottom 19 thereof (fig. 1) .
The method according to the invention now proceeds as follows : container 16 is filled with a suitably chosen quantity of cleaning agent 15, in this case liquid oven cleaner, and then closed by means of plug 18.
The closed container 16 is placed in the still cold preparation space 4 of heating appliance 1, wherein outlet opening 14 of the suction line 17 is connected to the suction opening 13 in the centre of the air distributing plate 9 in front of fan 8. Door 3 is then closed and the cleaning program of the heating appliance 1 is started. The temperature and the air humidity in preparation space 4 are herein raised, so that a pressure increase results in container 16, whereby the liquid 15 is pressed therefrom via suction line 17 and outlet opening 14. Tis liquid is then drawn via suction opening 13 into the fan 8 and, just as the heat, is distributed over the whole preparation space 4, and particularly the walls thereof. The indrawn liquid 15 is herein atomized by the fan. With a correct choice of the temperature and air humidity in the preparation space a uniform dosing of cleaning agent 15 is obtained. The temperature and air humidity can herein be increased in different steps. The degree of filling of container 16 is herein chosen such that it becomes empty just as the cleaning program finishes .
After the cleaning agent 15 is distributed in preparation space 4 it is given some time to soak in, whereafter the humidity and the temperature in preparation space 4 are increased again, so that the cleaning agent 15 flows off the walls and the dissolved contaminants also run off the walls. Water is then injected into preparation space 4 so that the walls are rinsed and the dissolved contaminants disappear into the drain.
The method and the cleaning system according to the invention therefore have various advantages compared to older methods and systems for cleaning heating appliances such as ovens. The system is thus simple to use, the container is easy to place and the whole is durable. In addition, there is no risk of irritation to airways and skin of personnel, this in contrast to manual cleaning, so that protective clothing is not required either. The cleaning moreover takes place automatically, so it can take place when the oven is not in use. This will hereby also be done more regularly in practice, thus enhancing hygiene. Finally, only that quantity of cleaning agent determined by the degree of contamination is used, whereby savings can be made. Although the invention is elucidated above with reference to an embodiment, it will be apparent that it is not limited thereto. The cleaning agent could thus be urged out of the container in a manner other than by heating, while it could also be distributed in the interior of the heating appliance with other means. The configuration of the container and the connection thereof to the heating appliance could also differ from that shown and described here . The scope of the invention is therefore defined solely by the appended claims .

Claims

Figure imgf000007_0001
10. Heating appliance as claimed in claim 8 or 9, characterized in that the heat distributing means comprise at least one fan, in addition to at least one suction opening for the cleaning agent connected to the fan .
PCT/NL2001/000014 2000-01-10 2001-01-10 Method and device for cleaning an oven WO2001051856A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001234219A AU2001234219A1 (en) 2000-01-10 2001-01-10 Method and device for cleaning an oven

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1014045 2000-01-10
NL1014045 2000-01-10

Publications (1)

Publication Number Publication Date
WO2001051856A1 true WO2001051856A1 (en) 2001-07-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2001/000014 WO2001051856A1 (en) 2000-01-10 2001-01-10 Method and device for cleaning an oven

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AU (1) AU2001234219A1 (en)
WO (1) WO2001051856A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2865794A1 (en) * 2004-01-29 2005-08-05 Rational Ag COOKING APPARATUS, ITS ACCESSORIES, AND METHOD FOR ITS CLEANING
EP1209419A3 (en) * 2000-11-28 2006-06-07 Wiesheu GmbH Cleaning system and method of a cooking oven
EP2110606A3 (en) * 2008-04-17 2011-10-05 Convotherm-Elektrogeräte GmbH Commercial cooking device, in particular hot air steamer
WO2014032703A1 (en) * 2012-08-28 2014-03-06 Electrolux Home Products Corporation N. V. Method of treating soiled inner walls of an oven cavity and oven implemented for executing such a method
WO2016016351A1 (en) * 2014-08-01 2016-02-04 BSH Hausgeräte GmbH Cleaning of a household appliance

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3550576A (en) * 1968-11-22 1970-12-29 Burger Eisenwerke Ag Food-treatment apparatus with washing means
US4059123A (en) * 1976-10-18 1977-11-22 Avco Corporation Cleaning and preservation unit for turbine engine
EP0801271A1 (en) * 1996-04-12 1997-10-15 Wiesheu-Wiwa GmbH Oven and process for cleaning of an oven

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3550576A (en) * 1968-11-22 1970-12-29 Burger Eisenwerke Ag Food-treatment apparatus with washing means
US4059123A (en) * 1976-10-18 1977-11-22 Avco Corporation Cleaning and preservation unit for turbine engine
EP0801271A1 (en) * 1996-04-12 1997-10-15 Wiesheu-Wiwa GmbH Oven and process for cleaning of an oven

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1209419A3 (en) * 2000-11-28 2006-06-07 Wiesheu GmbH Cleaning system and method of a cooking oven
FR2865794A1 (en) * 2004-01-29 2005-08-05 Rational Ag COOKING APPARATUS, ITS ACCESSORIES, AND METHOD FOR ITS CLEANING
EP2110606A3 (en) * 2008-04-17 2011-10-05 Convotherm-Elektrogeräte GmbH Commercial cooking device, in particular hot air steamer
WO2014032703A1 (en) * 2012-08-28 2014-03-06 Electrolux Home Products Corporation N. V. Method of treating soiled inner walls of an oven cavity and oven implemented for executing such a method
WO2016016351A1 (en) * 2014-08-01 2016-02-04 BSH Hausgeräte GmbH Cleaning of a household appliance

Also Published As

Publication number Publication date
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