WO2016029955A1 - Cooking oven with improved ventilation - Google Patents

Cooking oven with improved ventilation Download PDF

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Publication number
WO2016029955A1
WO2016029955A1 PCT/EP2014/068336 EP2014068336W WO2016029955A1 WO 2016029955 A1 WO2016029955 A1 WO 2016029955A1 EP 2014068336 W EP2014068336 W EP 2014068336W WO 2016029955 A1 WO2016029955 A1 WO 2016029955A1
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WO
WIPO (PCT)
Prior art keywords
region
vertical section
ventilation
cooking oven
front cover
Prior art date
Application number
PCT/EP2014/068336
Other languages
French (fr)
Inventor
Servet TURGUT
Mehmet Baris Gocer
Ilhan OFLUGIL
Turgut YERLIKAYA
Ugur Camli
Original Assignee
Arcelik Anonim 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 Arcelik Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Priority to PCT/EP2014/068336 priority Critical patent/WO2016029955A1/en
Publication of WO2016029955A1 publication Critical patent/WO2016029955A1/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
    • F24C15/00—Details
    • F24C15/006—Arrangements for circulation of cooling air
    • 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

Definitions

  • the present invention relates to a cooking oven, in particular a built-in type domestic cooking oven which has a ventilation facility for ventilating the cooking chamber by forced convection.
  • a built-in type cooking oven cannot efficiently radiate off its heat into the kitchen environment.
  • a built-in cooking oven must be properly ventilated to prevent a breakdown thereof and any hazards that might be caused by its hot parts. Therefore, a built-in cooking oven is generally provided with a ventilation unit having a fan which is arranged to intensively ventilate its cooking chamber by forced convection.
  • the ventilation unit is also utilized for exhausting the steam generated inside the cooking chamber to the outside.
  • DE3793467 A1 discloses a prior art built-in type cooking oven which has a ventilation unit for ventilating the chamber by forced convection.
  • the cooking chamber is not hermetically sealed from the rest of the oven.
  • a problem with such prior art built-in type cooking oven is that if the ventilation unit is shut off, or fails to operate, a considerable amount of steam leaks from the chamber into the intermediate region between the inner case and the outer case of the oven where the critical parts such as the electrical components are generally installed. Then, the steam cools down to the dew point and starts condensing on the relatively colder parts, including the electrical components. Thus, there is a risk that the condensate impairs the proper functioning of the oven and causes a breakdown. Improving the sealing between the chamber and the intermediate region or increasing the fan rotation rate of the ventilation unit could reduce the leakage of the steam towards the critical parts. However such measures either increase the overall costs or the energy consumption of the oven.
  • An objective of the present invention is to provide an oven which overcomes the aforementioned drawbacks of the prior art in a cost-effective way and which enables an improved ventilation.
  • the outer case has an upper cover which comprises a horizontal section and a vertical section which extends upwards away from the horizontal section and faces through a gap the inner surface of the uppermost vertical section of the front cover of the outer case and has one or more than one ventilation aperture.
  • a sub-region of the intermediate-region, which is enclosed by said vertical section of the upper cover and said uppermost vertical section of the front cover communicates with the rest of the intermediate-region and defines a flow path for ventilating the entire intermediate region via the ventilation aperture by natural convection.
  • the user interface unit is disposed in the proximity of the uppermost vertical section of the front cover above the door.
  • the electrical components which control the oven are disposed behind the user interface.
  • the front cover extends inwards away from the user side and shields the ventilation apertures of the upper cover from above. Thereby, the oven is protected from ingress of water/condensate which may drip down from the surrounding.
  • the entire intermediate region can be effectively ventilated by natural convection.
  • the steam which escapes from the chamber into the intermediate region is immediately lead to the outside via the ventilation aperture and can be prevented from cooling and condensing on the relatively cooler critical parts such as the electrical components behind the front cover.
  • an uninterrupted ventilation of the oven by natural convection can be safeguarded.
  • the aforementioned measures like sealing the chamber and increasing the rate of forced convection have been obviated.
  • any condensate accumulating on the outer surface of the outer case can be prevented from flowing back into the oven.
  • the electrical components are also protected from ingress of the condensate.
  • Figure 1 – is a schematic partial front view of the oven according to an embodiment of the present invention.
  • Figure 2 – is a schematic sectional view of the oven of Fig. 1, taken along the line A-A;
  • Figure 3 – is a schematic enlarged view of the detail B of Fig. 2;
  • Figure 4 – is a schematic partial rear perspective view of an oven of Fig.1;
  • Figure 5 – is a schematic enlarged view of the detail C of Fig. 4;
  • Figure 6 – is a schematic perspective view of the upper cover of the oven of Fig.1;
  • Figure 7 – is a schematic front view of the upper cover of Fig. 6;
  • Figure 8 – is a schematic sectional view of the upper cover of Fig. 7, taken along the line D-D;
  • Figure 9 – is a schematic enlarged view of the detail E of Fig. 8.
  • the cooking oven (1) comprises an inner case (2) which forms a chamber (3) for cooking food, a door (not shown) for accessing the chamber (3), a heater unit (not shown) for heating the interior of the chamber (3), an outer case (4) which encloses partly the inner case (2), wherein the outer case (4) has a front cover (5) which supports a user interface unit (6), wherein the front cover (5) has a vertical section (5a) which faces the user side, a ventilation unit (7) for ventilating the chamber (3) by forced convection, wherein the ventilation unit (7) is arranged in the intermediate-region (8) between the inner case (2) and the outer case (4), wherein the chamber (3) and the intermediate-region (8) are not hermetically sealed from each other (Fig. 1 to 9).
  • the outer case (4) has an upper cover (9) which comprises a horizontal section (9a) and a vertical section (9b).
  • the vertical section (9b) extends upwards away from the horizontal section (9a) and faces through a gap (10) the inner surface of the uppermost vertical section (5a) of the front cover (5).
  • the vertical section (9b) has one or more than one ventilation aperture (11).
  • a sub-region (8a) of the intermediate-region (8), which is enclosed by said vertical section (9b) of the upper cover (9) and said uppermost vertical section (5a) of the front cover (5) communicates with the rest of the intermediate-region (8).
  • the sub-region (8a) defines a flow path for ventilating the entire intermediate region (8) via the ventilation aperture (11) by natural convection (Fig. 1 to 10).
  • the ventilation aperture (11) comprises a slot (12).
  • each slot (12) extends in the horizontal direction.
  • each slot (12) comprises a horizontally cut edge (13a) and a lip-shaped depression (13b).
  • the horizontally cut edge (13a) is formed into the vertical section (9b) of the upper cover (9).
  • the lip-shaped depression (13b) is also formed into the vertical section (9b) of the upper cover (9).
  • the lip-shaped depression (13b) opposes the horizontally cut edge (13a).
  • each lip-shaped depression (13b) bends inwards to into the sub-region (8b).
  • the front cover (5) has a horizontal section (5b) which extends inwards away from the user side.
  • the horizontal section (5b) shields the vertical section (9b) of the upper cover (9) from above.
  • the user interface unit (6) is mounted at least partly onto the uppermost vertical section (5a) of the front cover (5) above the door.
  • the electrical components (14) which control the heater unit, the user interface unit (6) and the ventilation unit (7) are located within the intermediate region (8) and at least partly behind the uppermost vertical section (5a) of the front cover (5) above the door. In addition, the electrical components (14) are enclosed by a protective shield (15).
  • the upper cover (9) comprises ventilation openings (16) which are formed into its horizontal section (9a). These ventilation openings (16) open into the intermediate region (8).
  • the upper cover (9) also comprises a depression (17) which is formed into its horizontal section (9a). The depression (17) surrounds the ventilation openings (16).
  • the entire intermediate region (8) can be effectively ventilated by natural convection.
  • a formation of condensate on the relatively cooler parts behind the front cover (5) can be prevented or reduced as much as possible.
  • an uninterrupted ventilation of the oven (1) by natural convection can be safeguarded.
  • any condensate which is accumulated on the outer surface of the outer case (4) can be prevented from flowing back into the oven (1).
  • the electrical components are also protected from the ingress of the condensate.
  • a consumer satisfaction can be increased.

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

Abstract

The present invention relates to an oven (1) comprising an inner case (2) forming a chamber (3), an outer case (4) enclosing the inner case (2) and a ventilation unit disposed in an intermediate-region between the inner case (2) and the outer case (4) for ventilating the chamber (3) by forced convection, wherein the chamber (3) and the intermediate-region (8) are not hermetically sealed from each other, wherein the outer case (4) has an upper cover (9) comprising a horizontal section (9a) and a vertical section (9b) which extends upwards away from the horizontal section (9a) and faces through a gap (10) the inner surface of the uppermost vertical section (5a) of the front cover (5) and has one or more than one ventilation aperture (11), wherein a sub-region (8a) of the intermediate-region (8), which is enclosed by said vertical section (9b) of the upper cover (9) and said uppermost vertical section (5a) of the front cover (5) communicates with the rest of the intermediate-region (8) and defines a flow path for ventilating the entire intermediate region (8) via the ventilation aperture (11) by natural convection.

Description

COOKING OVEN WITH IMPROVED VENTILATION
The present invention relates to a cooking oven, in particular a built-in type domestic cooking oven which has a ventilation facility for ventilating the cooking chamber by forced convection.
It is customary to install a cooking oven underneath a kitchen counter, in particular between cabinets and to integrate it with the kitchen furniture. In comparison to a free-standing cooking oven, a built-in type cooking oven cannot efficiently radiate off its heat into the kitchen environment. Thus, a built-in cooking oven must be properly ventilated to prevent a breakdown thereof and any hazards that might be caused by its hot parts. Therefore, a built-in cooking oven is generally provided with a ventilation unit having a fan which is arranged to intensively ventilate its cooking chamber by forced convection.
In general, during the cooking process a large amount of steam is generated inside the cooking chamber. A satisfactory completion of the cooking process requires the steam inside the cooking chamber to be effectively exhausted to the outside. In the built-in type cooking oven, the ventilation unit is also utilized for exhausting the steam generated inside the cooking chamber to the outside.
DE3793467 A1 discloses a prior art built-in type cooking oven which has a ventilation unit for ventilating the chamber by forced convection.
In general, the cooking chamber is not hermetically sealed from the rest of the oven. A problem with such prior art built-in type cooking oven is that if the ventilation unit is shut off, or fails to operate, a considerable amount of steam leaks from the chamber into the intermediate region between the inner case and the outer case of the oven where the critical parts such as the electrical components are generally installed. Then, the steam cools down to the dew point and starts condensing on the relatively colder parts, including the electrical components. Thus, there is a risk that the condensate impairs the proper functioning of the oven and causes a breakdown. Improving the sealing between the chamber and the intermediate region or increasing the fan rotation rate of the ventilation unit could reduce the leakage of the steam towards the critical parts. However such measures either increase the overall costs or the energy consumption of the oven.
An objective of the present invention is to provide an oven which overcomes the aforementioned drawbacks of the prior art in a cost-effective way and which enables an improved ventilation.
This objective has been achieved by the oven as defined in claim 1. Further achievements have been attained by the subject-matters respectively defined in the dependent claims.
In the oven of the present invention the outer case has an upper cover which comprises a horizontal section and a vertical section which extends upwards away from the horizontal section and faces through a gap the inner surface of the uppermost vertical section of the front cover of the outer case and has one or more than one ventilation aperture. A sub-region of the intermediate-region, which is enclosed by said vertical section of the upper cover and said uppermost vertical section of the front cover communicates with the rest of the intermediate-region and defines a flow path for ventilating the entire intermediate region via the ventilation aperture by natural convection.
In an embodiment, the user interface unit is disposed in the proximity of the uppermost vertical section of the front cover above the door. In a version of this embodiment, the electrical components which control the oven are disposed behind the user interface.
In another embodiment, the front cover extends inwards away from the user side and shields the ventilation apertures of the upper cover from above. Thereby, the oven is protected from ingress of water/condensate which may drip down from the surrounding.
With the present invention, particularly by virtue of the ventilation aperture opening directly into the uppermost sub-region behind the front cover, the entire intermediate region can be effectively ventilated by natural convection. Thereby, the steam which escapes from the chamber into the intermediate region is immediately lead to the outside via the ventilation aperture and can be prevented from cooling and condensing on the relatively cooler critical parts such as the electrical components behind the front cover. Also in case of a blackout, an uninterrupted ventilation of the oven by natural convection can be safeguarded. With the present invention, the aforementioned measures like sealing the chamber and increasing the rate of forced convection have been obviated. With the present invention, particularly by virtue of the ventilation aperture which is formed on the vertical section of the upper cover, any condensate accumulating on the outer surface of the outer case can be prevented from flowing back into the oven. Thereby, the electrical components are also protected from ingress of the condensate.
Additional advantages of the oven of the present invention will become apparent with the detailed description of an embodiment with reference to the accompanying drawings in which:
Figure 1 – is a schematic partial front view of the oven according to an embodiment of the present invention;
Figure 2 – is a schematic sectional view of the oven of Fig. 1, taken along the line A-A;
Figure 3 – is a schematic enlarged view of the detail B of Fig. 2;
Figure 4 – is a schematic partial rear perspective view of an oven of Fig.1;
Figure 5 – is a schematic enlarged view of the detail C of Fig. 4;
Figure 6 – is a schematic perspective view of the upper cover of the oven of Fig.1;
Figure 7 – is a schematic front view of the upper cover of Fig. 6;
Figure 8 – is a schematic sectional view of the upper cover of Fig. 7, taken along the line D-D;
Figure 9 – is a schematic enlarged view of the detail E of Fig. 8.
The reference signs appearing on the drawings relate to the following technical features.
  1. Oven
  2. Inner case
  3. Chamber
  4. Outer case
  5. Front cover
5a. Vertical section
5b. Horizontal section
6. User interface unit
7. Ventilation unit
8. Intermediate-region
8a. Sub-region
9. Upper cover
9a. Horizontal section
9b. Vertical section
10. Gap
11. Ventilation aperture
12. Slot
13a. Cut edge
13b. Lip-shaped depression
14. Electrical components
15. Protective shield
16. Ventilation opening
17. Depression
The cooking oven (1) comprises an inner case (2) which forms a chamber (3) for cooking food, a door (not shown) for accessing the chamber (3), a heater unit (not shown) for heating the interior of the chamber (3), an outer case (4) which encloses partly the inner case (2), wherein the outer case (4) has a front cover (5) which supports a user interface unit (6), wherein the front cover (5) has a vertical section (5a) which faces the user side, a ventilation unit (7) for ventilating the chamber (3) by forced convection, wherein the ventilation unit (7) is arranged in the intermediate-region (8) between the inner case (2) and the outer case (4), wherein the chamber (3) and the intermediate-region (8) are not hermetically sealed from each other (Fig. 1 to 9).
In the cooking oven (1) of the present invention, the outer case (4) has an upper cover (9) which comprises a horizontal section (9a) and a vertical section (9b). The vertical section (9b) extends upwards away from the horizontal section (9a) and faces through a gap (10) the inner surface of the uppermost vertical section (5a) of the front cover (5). The vertical section (9b) has one or more than one ventilation aperture (11). A sub-region (8a) of the intermediate-region (8), which is enclosed by said vertical section (9b) of the upper cover (9) and said uppermost vertical section (5a) of the front cover (5) communicates with the rest of the intermediate-region (8). The sub-region (8a) defines a flow path for ventilating the entire intermediate region (8) via the ventilation aperture (11) by natural convection (Fig. 1 to 10).
In an embodiment, the ventilation aperture (11) comprises a slot (12).
In a version of this embodiment, each slot (12) extends in the horizontal direction.
In another version of this embodiment, each slot (12) comprises a horizontally cut edge (13a) and a lip-shaped depression (13b). The horizontally cut edge (13a) is formed into the vertical section (9b) of the upper cover (9). The lip-shaped depression (13b) is also formed into the vertical section (9b) of the upper cover (9). The lip-shaped depression (13b) opposes the horizontally cut edge (13a).
In another version of this embodiment, each lip-shaped depression (13b) bends inwards to into the sub-region (8b).
In another embodiment, the front cover (5) has a horizontal section (5b) which extends inwards away from the user side. The horizontal section (5b) shields the vertical section (9b) of the upper cover (9) from above.
In another embodiment, the user interface unit (6) is mounted at least partly onto the uppermost vertical section (5a) of the front cover (5) above the door.
In a version of this embodiment, the electrical components (14) which control the heater unit, the user interface unit (6) and the ventilation unit (7) are located within the intermediate region (8) and at least partly behind the uppermost vertical section (5a) of the front cover (5) above the door. In addition, the electrical components (14) are enclosed by a protective shield (15).
In another embodiment, the upper cover (9) comprises ventilation openings (16) which are formed into its horizontal section (9a). These ventilation openings (16) open into the intermediate region (8). In this embodiment, the upper cover (9) also comprises a depression (17) which is formed into its horizontal section (9a). The depression (17) surrounds the ventilation openings (16).
With the present invention, particularly by virtue of the ventilation aperture (11), the entire intermediate region (8) can be effectively ventilated by natural convection. Thereby, a formation of condensate on the relatively cooler parts behind the front cover (5) can be prevented or reduced as much as possible. Also in case of a blackout an uninterrupted ventilation of the oven (1) by natural convection can be safeguarded. With the present invention, particularly by virtue of the ventilation aperture (11), any condensate which is accumulated on the outer surface of the outer case (4) can be prevented from flowing back into the oven (1). Thereby, the electrical components are also protected from the ingress of the condensate. With the present invention, a consumer satisfaction can be increased.

Claims (9)

  1. A cooking oven (1) comprising an inner case (2) which forms a chamber (3) for cooking food, a door for accessing the chamber (3), a heater unit for heating the interior of the chamber (3), an outer case (4) which encloses partly the inner case (2), wherein the outer case (4) has a front cover (5) which supports a user interface unit (6), wherein the front cover (5) has a vertical section (5a) which faces the user side, a ventilation unit (7) for ventilating the chamber (3) by forced convection, wherein the ventilation unit (7) is arranged in the intermediate-region (8) between the inner case (2) and the outer case (4), wherein the chamber (3) and the intermediate-region (8) are not hermetically sealed from each other,
    characterized in that
    the outer case (4) has an upper cover (9) comprising a horizontal section (9a) and a vertical section (9b) which extends upwards away from the horizontal section (9a) and faces through a gap (10) the inner surface of the uppermost vertical section (5a) of the front cover (5) and has one or more than one ventilation aperture (11),
    wherein a sub-region (8a) of the intermediate-region (8), which is enclosed by said vertical section (9b) of the upper cover (9) and said uppermost vertical section (5a) of the front cover (5) communicates with the rest of the intermediate-region (8) and defines a flow path for ventilating the entire intermediate region (8) via the ventilation aperture (11) by natural convection.
  2. The cooking oven (1) according to claim 1, characterized in that the ventilation aperture (11) comprises a slot (12).
  3. The cooking oven (1) according to claim 2, characterized in that each slot (12) extends in the horizontal direction.
  4. The cooking oven (1) according to claim 2 or 3, characterized in that each slot (12) comprising a horizontally cut edge (13a) formed into the vertical section (9b) of the upper cover (9) and a lip-shaped depression (13b) formed into the vertical section (9b) of the upper cover (9), wherein lip-shaped depression (13b) opposes the horizontally cut edge (13a).
  5. The cooking oven (1) according to claim 4, characterized in that each lip-shaped depression (13b) bends inwards into the sub-region (8b).
  6. The cooking oven (1) according to any one of claims 1 to 5, characterized in that the front cover (5) has a horizontal section (5b) which extends inwards away from the user side, wherein the horizontal section (5b) shields the vertical section (9b) of the upper cover (9) from above.
  7. The cooking oven (1) according to any one of claims 1 to 6, characterized in that the user interface unit (6) is mounted at least partly onto the uppermost vertical section (5a) of the front cover (5) above the door.
  8. The cooking oven (1) according to claim 7, characterized in that electrical components (14) for controlling the heater unit, the user interface unit (6) and the ventilation unit (7), wherein the electrical components (14) are located within the intermediate region (8) and at least partly behind the uppermost vertical section (5a) of the front cover (5) above the door and a protective shield (15) which encloses the electrical components (14).
  9. The cooking oven (1) according to any one of claims 1 to 8, characterized in that the upper cover (9) comprising ventilation openings (16) which are formed into its horizontal section (9a), wherein the ventilation openings (16) open into the intermediate region (8) and a depression (17) which is formed into its horizontal section (9a), wherein the depression (17) surrounds the ventilation openings (16).
PCT/EP2014/068336 2014-08-29 2014-08-29 Cooking oven with improved ventilation WO2016029955A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2014/068336 WO2016029955A1 (en) 2014-08-29 2014-08-29 Cooking oven with improved ventilation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2014/068336 WO2016029955A1 (en) 2014-08-29 2014-08-29 Cooking oven with improved ventilation

Publications (1)

Publication Number Publication Date
WO2016029955A1 true WO2016029955A1 (en) 2016-03-03

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PCT/EP2014/068336 WO2016029955A1 (en) 2014-08-29 2014-08-29 Cooking oven with improved ventilation

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017211382A1 (en) 2016-06-06 2017-12-14 Arcelik Anonim Sirketi Oven with a door comprising an air passage
EP3441757A1 (en) * 2017-08-10 2019-02-13 Mettler-Toledo GmbH Oven insulation arrangement

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4297558A (en) * 1979-05-01 1981-10-27 Rinnai Kabushiki Kaisha Composite cooking device
DE3703467A1 (en) 1987-02-05 1988-08-18 Buderus Kuechentechnik Inbuilt domestic electric oven
JP2007163128A (en) * 2005-12-12 2007-06-28 Lg Electronics Inc Cooking appliance
KR20090063420A (en) * 2007-12-14 2009-06-18 엘지전자 주식회사 Built-in type cooking appliance
US20130319394A1 (en) * 2012-06-01 2013-12-05 John Adam Yantis Oven hinge damper cooling system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4297558A (en) * 1979-05-01 1981-10-27 Rinnai Kabushiki Kaisha Composite cooking device
DE3703467A1 (en) 1987-02-05 1988-08-18 Buderus Kuechentechnik Inbuilt domestic electric oven
JP2007163128A (en) * 2005-12-12 2007-06-28 Lg Electronics Inc Cooking appliance
KR20090063420A (en) * 2007-12-14 2009-06-18 엘지전자 주식회사 Built-in type cooking appliance
US20130319394A1 (en) * 2012-06-01 2013-12-05 John Adam Yantis Oven hinge damper cooling system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017211382A1 (en) 2016-06-06 2017-12-14 Arcelik Anonim Sirketi Oven with a door comprising an air passage
EP3441757A1 (en) * 2017-08-10 2019-02-13 Mettler-Toledo GmbH Oven insulation arrangement
CN109387598A (en) * 2017-08-10 2019-02-26 梅特勒-托莱多有限公司 Baking oven heat-proof device
US10809238B2 (en) 2017-08-10 2020-10-20 Mettler-Toledo Gmbh Oven insulation arrangement
CN109387598B (en) * 2017-08-10 2023-02-17 梅特勒-托莱多有限公司 Analyzer and Karl Fischer titration system

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