Installation method of a kneading trough in an oven and its apparatus

• US 4,870,896 A
• Filed: 12/28/1988
• Issued: 10/03/1989
• Est. Priority Date: 12/28/1987
• Status: Expired due to Term

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Asahina, Takashi, Tsujimoto, Masaharu, Kodama, Satoru, Mitsumoto, Yoshio, Akiyoshi, Mitsuo
• Primary Examiner(s): Moon, Charlie T.
• Application Number:
  US07/291,296
• Time in Patent Office: 279 Days
• Field of Search: 29/559, 29/428, 99/348, 99/513
• US Class Current: 99/348
• CPC Class Codes: A21B 7/005 in combination with mixing or kneading devices
• CPC Class Codes: A21C 1/02 with vertically-mounted tools; Machines for whipping or beating
• CPC Class Codes: B01F 2035/99 Heating
• CPC Class Codes: B01F 27/80 with stirrers rotating about a substantially vertical axis
• CPC Class Codes: B01F 35/3213 at the lower side of the axis, e.g. driving the stirrer from the bottom of a receptacle
• CPC Class Codes: Y10T 29/49826 Assembling or joining
• CPC Class Codes: Y10T 29/49998 Work holding

Abstract

A heating and cooking apparatus has a kneading trough detachably installed in a heating chamber of the apparatus and provided with a handle for easy carrying for a user. Since both the kneading trough and a portion to be engaged with the kneading trough in the heating chamber are formed square, the force in the rotating direction during the operation can be positively received by the corners, thereby enhancing the strength of the apparatus, without rattlings or wearing-out or disengagement of the engaging portion therebetween.

Claims

1. A heating and cooking apparatus which comprises:

a heating chamber having a side opening for heating an object to be cooked therein;

a heating means for heating said heating chamber;

a kneading trough detachably installed through said side opening in said heating chamber;

a kneading vane for kneading the object to be cooked in said kneading trough;

a motor for rotating said kneading vane;

a transmission means for transmitting the rotating force of said motor;

a first engagement arrangement having strong engaging force by insertion motion substantially perpendicular to the plane of said side opening and provided at the inner side of said heating chamber; and

a second engagement arrangement which is easy to be engaged and disengaged and, provided at the opening side of said heating chamber.

2. A heating and cooking apparatus as claimed in claim 1, wherein said first engagement arrangement is such that a projected portion is formed in a foot part of the kneading trough in the depth side of the heating chamber, and a hole portion or a grooved portion is formed in a to-be-engaged portion at the bottom of the heating chamber in a manner to confront said projected portion, so that when said projected portion is inserted into said hole portion or grooved portion, the kneading trough is fixed to the to-be-engaged portion at one end thereof, while said second engagement arrangement is so constructed that a magnetic element is provided in the foot part of said kneading trough at the opening side of the heating chamber, and a second engaging means made of magnetic material is provided in the to-be-engaged portion at the bottom of the heating chamber in a manner to confront said magnetic element at the opening side of the heating chamber, so that said kneading trough is fixedly secured to the to-be-engaged portion through mutual magnetic force of the magnetic element and the second engaging means.

3. A heating and cooking apparatus as claimed in claim 2, wherein said second engagement arrangement is so constructed that the magnetic element in the foot part of the kneading trough in made of a ferromagnetic magnet, and the second engaging means provided in the to-be-engaged portion correspondingly to said magnetic element is made of a permanent material.

4. A heating and cooking apparatus as claimed in claim 1, wherein said first engagement arrangement is so constructed that the movable projected portion is formed in the foot part of the kneading trough and, the hole portion or the grooved portion is formed in the to-be-engaged portion correspondingly to the movable projected portion, characterized in that the engagement of the kneading trough with the to-be-engaged portion is maintained or released by the movement of said movable projected portion.

5. A heating and cooking apparatus as claimed in claim 4, wherein said kneading trough is provided with a handle at the opening side of the heating chamber when the kneading trough is laterally installed in the heating chamber, said handle being provided with an operating part so as to maintain or release the engagement between the kneading trough and the to-be-engaged portion.

6. A heating and cooking apparatus as claimed in claim 1, wherein a handle is mounted in the kneading trough at the opening side of the heating chamber when the kneading trough is laterally installed in the heating chamber, so that the kneading trough can be carried and installed in the heating chamber by the use of the handle.

7. A heating and cooking apparatus as claimed in claim 1, wherein a detection unit for detecting the presence of the kneading trough is further provided in the to-be-engaged portion correspondingly to the projected portion of the foot part of the kneading trough.

8. A heating and cooking apparatus which comprises:

a heating chamber having a side opening for heating an object to be cooked therein;

a heating means for heating said heating chamber;

a kneading trough detachably installed through said side opening in said heating chamber;

a kneading vane for kneading the object to be cooked in said kneading trough;

a motor for rotating said kneading vane; and

a transmission means for transmitting the rotating force of said motor,

wherein a projection is formed in a to-be-engaged portion at the bottom of said heating chamber, and an engaging portion, is provided in a foot part of said kneading

trough at a position corresponding to said projection so for receiving said projection by insertion motion substantially perpendicular to the plane of said opening as to prevent the rotation of the kneading trough.

9. A heating and cooking apparatus as claimed in claim 8, wherein said foot part of the kneading trough is formed in such shape as to be partially or completely engaged with the to-be-engaged portion at the bottom of the heating chamber, characterized in that said foot part forms an engaging portion by itself to hold the kneading trough.

10. A heating and cooking apparatus as claimed in claim 9, wherein both said foot part of the kneading trough and said to-be-engaged portion in the heating chamber are formed respectively in a polygonal shape having more than four corners to hold the kneading trough.

11. A heating and cooking apparatus as claimed in claim 9, wherein sad projection of the to-be-engaged portion in the heating chamber is rendered in a rail-like from to be partially or totally engaged with the foot part of the kneading trough, while serving as a guide frame when the kneading trough is installed in or removed from the heating chamber.

12. A heating and cooking apparatus as claimed in claim 9, wherein the width of the to-be-engaged portion at the opening side of the heating chamber is made larger than that at the deep side of the heating chamber, so that said to-be-engaged portion is partially or totally engaged with said foot part of the kneading trough, serving as a guide frame when the kneading trough is installed in or taken out of the heating chamber.

13. A heating and cooking apparatus as claimed in claim 9, wherein the width of the to-be-engaged portion in the front-and-back direction of the heating chamber is made greatly different from the of the foot part of the kneading trough in the same direction, so that the foot part of the kneading trough is partially engaged with the to-be-engaged portion.

14. An installation method of the kneading trough into the heating chamber of a heating and cooking apparatus, which comprises:

a heating chamber having a side opening for heating an object to be cooked, therein a heating means for heating said heating chamber, a kneading trough detachably installed through said side opening in said heating chamber, a kneading vane for kneading the object to be cooked in said kneading trough, a motor for rotating said kneading vane and a transmission means for transmitting the rotating force of said motor, comprising the steps of;

1 inserting by insertion motion substantially perpendicular to the plane of said side opening a projected portion formed in the lower part of the kneading trough into a first to-be-engaged part in the depth at the bottom of the heating chamber so as to be coupled with each other;

2 coupling the kneading trough with a rotary driving unit by moving the kneading trough to the side of the bottom of the heating chamber; and

3 coupling an engaging portion formed in the lower part of the kneading trough correspondingly to a second to-be-engaged part with said second to-be-engaged part provided at the opening side at the bottom of the heating chamber.