WO2017190793A1 - Cooking appliance with a microwave heating function - Google Patents

Cooking appliance with a microwave heating function Download PDF

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Publication number
WO2017190793A1
WO2017190793A1 PCT/EP2016/060167 EP2016060167W WO2017190793A1 WO 2017190793 A1 WO2017190793 A1 WO 2017190793A1 EP 2016060167 W EP2016060167 W EP 2016060167W WO 2017190793 A1 WO2017190793 A1 WO 2017190793A1
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WO
WIPO (PCT)
Prior art keywords
cooking appliance
waveguide
dielectric strength
dielectric
dielectric material
Prior art date
Application number
PCT/EP2016/060167
Other languages
French (fr)
Inventor
Alper YESILCUBUK
Sezgi YIKILMAZCINAR
Serdal Elmas
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/EP2016/060167 priority Critical patent/WO2017190793A1/en
Priority to TR2017/06643A priority patent/TR201706643A2/en
Publication of WO2017190793A1 publication Critical patent/WO2017190793A1/en

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/70—Feed lines
    • H05B6/705—Feed lines using microwave tuning
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/66—Circuits
    • H05B6/666—Safety circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/70—Feed lines
    • H05B6/707—Feed lines using waveguides
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Definitions

  • the present invention relates to a cooking appliance, in particular to a cooking appliance which has a microwave heating function.
  • a cooking appliance with the microwave heating function generally comprises a chamber for receiving the food to be cooked; a magnetron for generating microwaves; a waveguide for guiding the microwaves into the chamber, wherein the waveguide has an aperture which opens into the chamber; and an impedance matching device for adjusting the impedance of the waveguide.
  • KR20000050823(A) discloses a microwave oven.
  • a problem with the aforementioned prior art cooking appliance is that the metal objects inside the waveguide generally pose the risk of spark generation when the microwave heating function is used.
  • the sparks generally cause loud noises which can easily disturb the users.
  • the sparks can also cause damages to the electrical components of the cooking appliance and thus incur additional maintenance costs.
  • the cooking appliance can be set on fire through the heat of the sparks.
  • An objective of the present invention is to provide a cooking appliance which solves the aforementioned problems of the prior art in a cost-effective way and which enables an improved cooking efficiency and an improved safety.
  • the impedance matching device comprises an elongated member which is made from an electrically conductive material and which is height-adjustably immersed into the waveguide, wherein at least the tip section of the elongated member which is immersed into the waveguide is covered with a dielectric material which has a dielectric strength that is greater than the dielectric strength of the air inside the waveguide.
  • a major advantageous effect of the present invention is that the risk of spark generation inside the waveguide has been eliminated or reduced as much as possible. Thereby, the cooking efficiency and the safety of the cooking appliance have been improved. Thereby also the life of the electrical components such as the magnetron and the stirring device can be prolonged.
  • Another major advantageous effect of the present invention is that the impedance matching device can be more effectively used when adjusting the impendence of the waveguide as the risk of spark generation through the elongated member has been eliminated or reduced as much as possible by virtue of the dielectric member.
  • the elongated member can be height-adjustably immersed into waveguide to positions which are comparatively closer to the inner base surface of the waveguide.
  • the stem section of the elongated member inside the waveguide is covered with a dielectric material which has a dielectric strength that is greater than the dielectric strength of the air.
  • This embodiment is particularly advantageous as the spark generation between the waveguide and the elongated member can be eliminated or reduced as much as possible.
  • the inner surface of the waveguide which is on the opposite side of the elongated member and/or the magnetron is at least partly or entirely covered with a dielectric material which has a dielectric strength that is greater than that of the air.
  • the microwaves which are guided through the aperture are spread by means of a stirring device into the chamber.
  • the stirring device is supported by an electrically conductive mounting member, preferably by a metal rod, which passes through the aperture.
  • This embodiment is particularly advantageous as the microwaves can be homogenously spread into the chamber and the cooking results can be improved.
  • At least the circumferential section of the mounting member is covered with a dielectric material which has a dielectric strength that is greater than that of the air.
  • a closure member which is made from a dielectric material is disposed into the gap between the mounting member and the aperture.
  • the dielectric material used against spark generation may comprise various different heat resistant materials such as glasses, micas, varnishes, enamels, or polymers such as silicone rubbers etc. These embodiments are particularly advantageous as the dielectric material can be chosen in accordance with the operating conditions and the geometry of the waveguide.
  • the dielectric material can be applied to the aforementioned parts by coating or painting. Of course, different dielectric material can be used in combination and in various size and shapes.
  • the elongated member is provided in form a metal screw which is mounted into a threaded opening on the waveguide.
  • This embodiment is particularly advantageous as the impedance matching device can be easily assembled with the waveguide.
  • the impedance of the waveguide can be easily adjusted by way of driving the screw into or out of the waveguide with a screw driver. Thereby, the microwave transmission of the waveguide can be increased, and the energy efficiency of the oven can be improved.
  • Figure 1 – is a schematic perspective view of a cooking appliance with a microwave heating function which has an impedance matching device according to an embodiment of the present invention
  • Figure 2 – is a schematic partial sectional perspective view of the cooking appliance in Fig 1;
  • Figure 3 – is a schematic partial sectional side view of the cooking appliance in Fig 1;
  • Figure 4 – is a schematic perspective view of a screw in the impedance matching device of the cooking appliance in Fig 1, wherein the tip section and the stem section of the screw is covered with a dielectric material which is illustrated by the blank area.
  • Figure 5 – is a schematic sectional perspective view of a closure member in the waveguide of the cooking appliance in Fig 1.
  • Cooking appliance 2. Chamber 3. Waveguide 3a. Attachment means 4. Aperture 5. Impedance matching device 6. Elongated member
  • the cooking appliance (1) comprises a chamber (2) for receiving the food to be cooked (Fig. 1).
  • the cooking appliance (1) further comprises a magnetron (not shown) for generating microwaves; a waveguide (3) for guiding the microwaves into the chamber (2), wherein the waveguide (3) has an aperture (4) which opens into the chamber (2), and wherein the waveguide (3) has an attachment means (3a) for attaching the magnetron; and an impedance matching device (5) for adjusting the impedance of the waveguide (3) (Fig. 2 and Fig. 3).
  • the impedance matching device (5) comprises an elongated member (6) which is made from an electrically conductive material and which is height-adjustably immersed into the waveguide (3) (Fig. 2 to Fig. 4).
  • the tip section (6a) of the elongated member (6) which is immersed into the waveguide (3) is covered with a dielectric material (7) which has a dielectric strength that is greater than the dielectric strength of the air (8) (Fig. 2 to Fig. 4).
  • the stem section (6b) of the elongated member (6) which is immersed into the waveguide (3) is covered with a dielectric material (7) which has a dielectric strength that is greater than the dielectric strength of the air (8) (Fig. 2 to Fig. 4).
  • At least a first surface section (9a) of the inner base surface (9) of the waveguide (3) which is opposite to the elongated member (6) is covered with a dielectric material (7) which has a dielectric strength that is greater than the dielectric strength of the air (8) (Fig. 2 and Fig 3).
  • At least a second surface section (9b) of the inner base surface (9) of the waveguide (3) which is opposite to the magnetron is covered with a dielectric material (7) which has a dielectric strength that is greater than the dielectric strength of the air (8) (Fig. 2 and Fig 3).
  • the entire inner base surface (9) of the waveguide (3) which is opposite to the magnetron and the elongated member (6) is covered with a dielectric material (7) which has a dielectric strength that is greater than the dielectric strength of the air (8) (Fig. 2 and Fig 3).
  • the cooking appliance (1) further comprises: a stirring device (not shown) for stirring the microwaves which are guided through the aperture (4) into the chamber (2).
  • the cooking appliance (1) further comprises a mounting member (10) which supports the stirring device (Fig. 2 and Fig 3).
  • the mounting member (10) is made from an electrically conductive material and passes through the aperture (4) (Fig. 2 and Fig. 3).
  • the mounting member (10) comprises one or more metal rods (11) (Fig. 2 and Fig. 3).
  • At least the circumferential section (12) of the mounting member (10) is covered with a dielectric material (7) which has a dielectric strength that is greater than the dielectric strength of the air (8) (Fig. 2 and Fig. 3).
  • the cooking appliance (1) further comprises: a closure member (13) which is made from a dielectric material (7) (Fig. 5).
  • the closure member (13) is disposed into the gap between the mounting member (10) and the edge of the aperture (4) (Fig. 2 and Fig. 3).
  • the dielectric material (7) of the closure member (13) has a dielectric strength that is greater than the dielectric strength of the air (8).
  • the dielectric material (7) comprises enamel or a polymer which is heat resistant.
  • the polymer comprises a silicone rubber or specifically a transparent silicone rubber.
  • the waveguide (3) comprises a threaded opening (14) (Fig. 2 and Fig. 3).
  • the elongated member (6) is provided in form a screw (15) which is mounted into the threaded opening (14) (Fig. 4).
  • a major advantageous effect of the present invention is that the risk of spark generation inside the waveguide (3) has been eliminated or reduced as much as possible. Thereby, the cooking efficiency and the safety of the cooking appliance (1) have been improved. Thereby also the life of the electrical components such as the magnetron and the stirring device can be prolonged.
  • Another major advantageous effect of the present invention is that the impedance matching device (5) can be more effectively used when adjusting the impendence of the waveguide (3) as the risk of spark generation through the elongated member (6) has been eliminated or reduced as much as possible by virtue of the dielectric member (7).
  • the elongated member (6) can be height-adjustably immersed into waveguide (3) to positions which are comparatively closer to the inner base surface (9) of the waveguide (3).
  • Other advantageous effects of the present invention can be taken from the above-described embodiments.

Abstract

The present invention relates to a cooking appliance (1) comprising: a chamber (2) for receiving the food to be cooked; a magnetron for generating microwaves; a waveguide (3) for guiding the microwaves into the chamber (2), wherein the waveguide (3) has an aperture (4) which opens into the chamber (2); and an impedance matching device (5) for adjusting the impedance of the waveguide (3).

Description

COOKING APPLIANCE WITH A MICROWAVE HEATING FUNCTION
The present invention relates to a cooking appliance, in particular to a cooking appliance which has a microwave heating function.
Cooking appliances such as microwave ovens or hybrid ovens with microwave heating functions are commonly known in the art. A cooking appliance with the microwave heating function generally comprises a chamber for receiving the food to be cooked; a magnetron for generating microwaves; a waveguide for guiding the microwaves into the chamber, wherein the waveguide has an aperture which opens into the chamber; and an impedance matching device for adjusting the impedance of the waveguide.
KR20000050823(A) discloses a microwave oven.
A problem with the aforementioned prior art cooking appliance is that the metal objects inside the waveguide generally pose the risk of spark generation when the microwave heating function is used. The sparks generally cause loud noises which can easily disturb the users. The sparks can also cause damages to the electrical components of the cooking appliance and thus incur additional maintenance costs. Moreover the cooking appliance can be set on fire through the heat of the sparks.
An objective of the present invention is to provide a cooking appliance which solves the aforementioned problems of the prior art in a cost-effective way and which enables an improved cooking efficiency and an improved safety.
This objective has been achieved by the cooking appliance as defined in claim 1. Further achievements have been attained by the subject-matters respectively defined in the dependent claims.
In the cooking appliance of the present invention the impedance matching device comprises an elongated member which is made from an electrically conductive material and which is height-adjustably immersed into the waveguide, wherein at least the tip section of the elongated member which is immersed into the waveguide is covered with a dielectric material which has a dielectric strength that is greater than the dielectric strength of the air inside the waveguide.
A major advantageous effect of the present invention is that the risk of spark generation inside the waveguide has been eliminated or reduced as much as possible. Thereby, the cooking efficiency and the safety of the cooking appliance have been improved. Thereby also the life of the electrical components such as the magnetron and the stirring device can be prolonged. Another major advantageous effect of the present invention is that the impedance matching device can be more effectively used when adjusting the impendence of the waveguide as the risk of spark generation through the elongated member has been eliminated or reduced as much as possible by virtue of the dielectric member. For instance, the elongated member can be height-adjustably immersed into waveguide to positions which are comparatively closer to the inner base surface of the waveguide.
In an embodiment, the stem section of the elongated member inside the waveguide is covered with a dielectric material which has a dielectric strength that is greater than the dielectric strength of the air. This embodiment is particularly advantageous as the spark generation between the waveguide and the elongated member can be eliminated or reduced as much as possible.
In other alternative embodiments, the inner surface of the waveguide which is on the opposite side of the elongated member and/or the magnetron is at least partly or entirely covered with a dielectric material which has a dielectric strength that is greater than that of the air. These embodiments are particularly advantageous as the spark generation between the waveguide and the magnetron or the impedance matching device can be eliminated or reduced as much as possible.
In another embodiment, the microwaves which are guided through the aperture are spread by means of a stirring device into the chamber. The stirring device is supported by an electrically conductive mounting member, preferably by a metal rod, which passes through the aperture. This embodiment is particularly advantageous as the microwaves can be homogenously spread into the chamber and the cooking results can be improved.
In another embodiment, at least the circumferential section of the mounting member is covered with a dielectric material which has a dielectric strength that is greater than that of the air. In another embodiment, a closure member which is made from a dielectric material is disposed into the gap between the mounting member and the aperture. These embodiments are particularly advantageous as the spark generation between the waveguide and the supporting member can be eliminated or reduced as much as possible.
In other alternative embodiments, the dielectric material used against spark generation may comprise various different heat resistant materials such as glasses, micas, varnishes, enamels, or polymers such as silicone rubbers etc. These embodiments are particularly advantageous as the dielectric material can be chosen in accordance with the operating conditions and the geometry of the waveguide. The dielectric material can be applied to the aforementioned parts by coating or painting. Of course, different dielectric material can be used in combination and in various size and shapes.
In another embodiment, the elongated member is provided in form a metal screw which is mounted into a threaded opening on the waveguide. This embodiment is particularly advantageous as the impedance matching device can be easily assembled with the waveguide. Moreover, the impedance of the waveguide can be easily adjusted by way of driving the screw into or out of the waveguide with a screw driver. Thereby, the microwave transmission of the waveguide can be increased, and the energy efficiency of the oven can be improved.
Additional features and additional advantageous effects of the cooking appliance of the present invention will become more apparent with the detailed description of the embodiments with reference to the accompanying drawings in which:
Figure 1 – is a schematic perspective view of a cooking appliance with a microwave heating function which has an impedance matching device according to an embodiment of the present invention;
Figure 2 – is a schematic partial sectional perspective view of the cooking appliance in Fig 1;
Figure 3 – is a schematic partial sectional side view of the cooking appliance in Fig 1;
Figure 4 – is a schematic perspective view of a screw in the impedance matching device of the cooking appliance in Fig 1, wherein the tip section and the stem section of the screw is covered with a dielectric material which is illustrated by the blank area.
Figure 5 – is a schematic sectional perspective view of a closure member in the waveguide of the cooking appliance in Fig 1.
The reference signs appearing on the drawings relate to the following technical features.
1. Cooking appliance
2. Chamber
3. Waveguide
3a. Attachment means
4. Aperture
5. Impedance matching device
6. Elongated member
6a. Tip section
6b. Stem section
7. Dielectric material
8. Air
9. Inner base surface
9a. First surface section
9b. Second surface section
10. Mounting member
11. Metal rod
12. Circumferential section
13. Closure member
14. Threaded opening
15. Screw
The cooking appliance (1) comprises a chamber (2) for receiving the food to be cooked (Fig. 1). The cooking appliance (1) further comprises a magnetron (not shown) for generating microwaves; a waveguide (3) for guiding the microwaves into the chamber (2), wherein the waveguide (3) has an aperture (4) which opens into the chamber (2), and wherein the waveguide (3) has an attachment means (3a) for attaching the magnetron; and an impedance matching device (5) for adjusting the impedance of the waveguide (3) (Fig. 2 and Fig. 3).
In the cooking appliance (1) of the present invention, the impedance matching device (5) comprises an elongated member (6) which is made from an electrically conductive material and which is height-adjustably immersed into the waveguide (3) (Fig. 2 to Fig. 4). In the cooking appliance (1) of the present invention, at least the tip section (6a) of the elongated member (6) which is immersed into the waveguide (3) is covered with a dielectric material (7) which has a dielectric strength that is greater than the dielectric strength of the air (8) (Fig. 2 to Fig. 4).
In an embodiment, the stem section (6b) of the elongated member (6) which is immersed into the waveguide (3) is covered with a dielectric material (7) which has a dielectric strength that is greater than the dielectric strength of the air (8) (Fig. 2 to Fig. 4).
In another embodiment, at least a first surface section (9a) of the inner base surface (9) of the waveguide (3) which is opposite to the elongated member (6) is covered with a dielectric material (7) which has a dielectric strength that is greater than the dielectric strength of the air (8) (Fig. 2 and Fig 3).
In another embodiment, at least a second surface section (9b) of the inner base surface (9) of the waveguide (3) which is opposite to the magnetron is covered with a dielectric material (7) which has a dielectric strength that is greater than the dielectric strength of the air (8) (Fig. 2 and Fig 3).
In another embodiment, the entire inner base surface (9) of the waveguide (3) which is opposite to the magnetron and the elongated member (6) is covered with a dielectric material (7) which has a dielectric strength that is greater than the dielectric strength of the air (8) (Fig. 2 and Fig 3).
In another embodiment, the cooking appliance (1) further comprises: a stirring device (not shown) for stirring the microwaves which are guided through the aperture (4) into the chamber (2). In this embodiment, the cooking appliance (1) further comprises a mounting member (10) which supports the stirring device (Fig. 2 and Fig 3). In this embodiment, the mounting member (10) is made from an electrically conductive material and passes through the aperture (4) (Fig. 2 and Fig. 3).
In another embodiment, the mounting member (10) comprises one or more metal rods (11) (Fig. 2 and Fig. 3).
In another embodiment, at least the circumferential section (12) of the mounting member (10) is covered with a dielectric material (7) which has a dielectric strength that is greater than the dielectric strength of the air (8) (Fig. 2 and Fig. 3).
In another embodiment, the cooking appliance (1) further comprises: a closure member (13) which is made from a dielectric material (7) (Fig. 5). In this embodiment, the closure member (13) is disposed into the gap between the mounting member (10) and the edge of the aperture (4) (Fig. 2 and Fig. 3). In this embodiment, the dielectric material (7) of the closure member (13) has a dielectric strength that is greater than the dielectric strength of the air (8).
In another embodiment, the dielectric material (7) comprises enamel or a polymer which is heat resistant.
In another embodiment, the polymer comprises a silicone rubber or specifically a transparent silicone rubber.
In another embodiment, the waveguide (3) comprises a threaded opening (14) (Fig. 2 and Fig. 3). In this embodiment, the elongated member (6) is provided in form a screw (15) which is mounted into the threaded opening (14) (Fig. 4).
A major advantageous effect of the present invention is that the risk of spark generation inside the waveguide (3) has been eliminated or reduced as much as possible. Thereby, the cooking efficiency and the safety of the cooking appliance (1) have been improved. Thereby also the life of the electrical components such as the magnetron and the stirring device can be prolonged. Another major advantageous effect of the present invention is that the impedance matching device (5) can be more effectively used when adjusting the impendence of the waveguide (3) as the risk of spark generation through the elongated member (6) has been eliminated or reduced as much as possible by virtue of the dielectric member (7). For instance, the elongated member (6) can be height-adjustably immersed into waveguide (3) to positions which are comparatively closer to the inner base surface (9) of the waveguide (3). Other advantageous effects of the present invention can be taken from the above-described embodiments.

Claims (13)

  1. A cooking appliance (1) comprising: a chamber (2) for receiving the food to be cooked; a magnetron for generating microwaves; a waveguide (3) for guiding the microwaves into the chamber (2), wherein the waveguide (3) has an aperture (4) which opens into the chamber (2); an impedance matching device (5) for adjusting the impedance of the waveguide (3), characterized in that the impedance matching device (5) comprises an elongated member (6) which is made from an electrically conductive material and which is height-adjustably immersed into the waveguide (3), wherein at least the tip section (6a) of the elongated member (6) which is immersed into the waveguide (3) is covered with a dielectric material (7) which has a dielectric strength that is greater than the dielectric strength of the air (8).
  2. The cooking appliance (1) according to claim 1, characterized in that the stem section (6b) of the elongated member (6) which is immersed into the waveguide (3) is covered with a dielectric material (7) which has a dielectric strength that is greater than the dielectric strength of the air (8).
  3. The cooking appliance (1) according to claim 1 or 2, characterized in that at least a first surface section (9a) of the inner base surface (9) of the waveguide (3) which is opposite to the elongated member (6) is covered with a dielectric material (7) which has a dielectric strength that is greater than the dielectric strength of the air (8).
  4. The cooking appliance (1) according to any one of claims 1 to 3, characterized in that at least a second surface section (9b) of the inner base surface (9) of the waveguide (3) which is opposite to the magnetron is covered with a dielectric material (7) which has a dielectric strength that is greater than the dielectric strength of the air (8).
  5. The cooking appliance (1) according to claim 1 or 2, characterized in that the entire inner base surface (9) of the waveguide (3) which is opposite to the magnetron and the elongated member (6) is covered with a dielectric material (7) which has a dielectric strength that is greater than the dielectric strength of the air (8).
  6. The cooking appliance (1) according to any one of claims 1 to 5, characterized by further comprising: a stirring device for stirring the microwaves which are guided through the aperture (4) into the chamber (2); and a mounting member (10) which supports the stirring device, wherein the mounting member (10) is made from an electrically conductive material and passes through the aperture (4).
  7. The cooking appliance (1) according to claim 6, characterized in that the mounting member (10) comprises one or more metal rods (11).
  8. The cooking appliance (1) according to claim 6 or 7, characterized in that at least the circumferential section (12) of the mounting member (10) is covered with a dielectric material (7) which has a dielectric strength that is greater than the dielectric strength of the air (8).
  9. The cooking appliance (1) according to any one of claims 6 to 8, characterized by further comprising: a closure member (13) which is made from a dielectric material (7), wherein the closure member (13) is disposed into the gap between the mounting member (10) and the edge of the aperture (4), wherein the dielectric material (7) of the closure member (13) has a dielectric strength that is greater than the dielectric strength of the air (8).
  10. The cooking appliance (1) according to any one of claims 1 to 9, characterized in that the dielectric material (7) comprises enamel or a polymer.
  11. The cooking appliance (1) according to claim 10, characterized in that the polymer comprises silicone rubber.
  12. The cooking appliance (1) according to claim 11, characterized in that the polymer comprises a transparent silicone rubber.
  13. The cooking appliance (1) according to any one of claims 1 to 12, characterized in that the waveguide (3) comprises a threaded opening (14), wherein the elongated member (6) is provided in form a screw (15) which is mounted into the threaded opening (14).
PCT/EP2016/060167 2016-05-06 2016-05-06 Cooking appliance with a microwave heating function WO2017190793A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/EP2016/060167 WO2017190793A1 (en) 2016-05-06 2016-05-06 Cooking appliance with a microwave heating function
TR2017/06643A TR201706643A2 (en) 2016-05-06 2017-05-05 A COOKING DEVICE WITH MICROWAVE HEATING FUNCTION

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2016/060167 WO2017190793A1 (en) 2016-05-06 2016-05-06 Cooking appliance with a microwave heating function

Publications (1)

Publication Number Publication Date
WO2017190793A1 true WO2017190793A1 (en) 2017-11-09

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PCT/EP2016/060167 WO2017190793A1 (en) 2016-05-06 2016-05-06 Cooking appliance with a microwave heating function

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TR (1) TR201706643A2 (en)
WO (1) WO2017190793A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1583462A (en) * 1976-09-21 1981-01-28 Berstorff Gmbh Masch Hermann Apparatus for continuous dielectric heating by means of microwave energy
US4324965A (en) * 1979-07-25 1982-04-13 Hermann Berstorff Maschinenbau Gmbh Microwave heating method and apparatus including adjustable tuning members
US4689459A (en) * 1985-09-09 1987-08-25 Gerling John E Variable Q microwave applicator and method
KR20000050823A (en) 1999-01-15 2000-08-05 구자홍 Waveguide system for electronic range
US20110114115A1 (en) * 2009-11-18 2011-05-19 Axcelis Technologiesm Inc. Tuning hardware for plasma ashing apparatus and methods of use thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1583462A (en) * 1976-09-21 1981-01-28 Berstorff Gmbh Masch Hermann Apparatus for continuous dielectric heating by means of microwave energy
US4324965A (en) * 1979-07-25 1982-04-13 Hermann Berstorff Maschinenbau Gmbh Microwave heating method and apparatus including adjustable tuning members
US4689459A (en) * 1985-09-09 1987-08-25 Gerling John E Variable Q microwave applicator and method
KR20000050823A (en) 1999-01-15 2000-08-05 구자홍 Waveguide system for electronic range
US20110114115A1 (en) * 2009-11-18 2011-05-19 Axcelis Technologiesm Inc. Tuning hardware for plasma ashing apparatus and methods of use thereof

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