JP4499063B2 - Cooker - Google Patents

Description

  The present invention relates to a cooking device such as a rice cooker or a hot plate, and relates to a temperature sensor structure provided for detecting the temperature of a cooking container.

  As a typical example of this type of cooking device, a cooking container installation room, a heating plate arranged inside the cooking container installation room, and a cooking container installed on the heating plate are pushed back. A temperature sensor biased so as to move forward when the cooking container is removed from the heating plate, and the heat receiving portion of the temperature sensor is passed through the inside of the hole of the heating plate. There exists a rice cooker which contacts the said cooking container installed on the heating plate (for example, refer patent document 1).

  For example, as shown in FIG. 5, the temperature sensor 51 has a sensor case 52 in which a heat sensitive part (not shown) is arranged on the upper surface. The upper end of the temperature sensor 51 is a heat receiving portion 53. The heat receiving portion 53 is configured by a cap-like cover member fitted to the upper end portion of the sensor case 52. Note that, for example, a well-known configuration using a thermal fuse is employed as the heat sensitive portion, and the temperature of the heat receiving portion 53 is detected.

  The sensor case 52 is passed through the inside of a compression coil spring 55 installed in the vertical direction at the bottom of the cooking container installation chamber 54, and the upper end of the compression coil spring 55 is received by the flange portion of the heat receiving portion 53. Yes. The sensor case 52 is supported by a compression coil spring 55 so as to be movable up and down with respect to the bottom of the cooking vessel 56.

  A central portion of the heat receiving portion 53 is passed through a hole of the heating plate 57. Here, the upper surface of the central portion of the heat receiving section 53 is pushed down by the bottom of the cooking container 56 when the cooking container 56 is installed on the heating plate 57, and the compression coil spring when the cooking container 56 is removed. It is raised by the urging of 55. This rise is stopped when the collar portion of the heat receiving portion 53 contacts the lower surface of the heating plate 57. Here, the compression coil spring 55 constantly biases the sensor case 52 upward so that the contact state is maintained. This is because a heat conduction path is formed between the flange portion of the heat receiving portion 53 and the heating plate 57, and the case where the heating plate 57 is heated idly when the microcomputer runs away is detected by the heat sensitive portion. For example, when a thermal fuse is used for the heat sensitive part, it is configured to melt it.

  The reason why the flange portion of the heat receiving portion 53 is in contact with the lower surface of the heating plate 57 over the entire circumference is to detect accurately by the temperature sensor 51 when the heating plate 57 is abnormally heated. If the sensor case 52 is greatly inclined, the flange portion of the heat receiving portion 53 is half-hanged on the inner periphery of the hole of the heating plate 57, and the temperature sensor 51 may not function normally.

  Further, the heat receiving portion 53 and the heating plate 57 are separated in a state where the cooking container 56 is installed on the heating plate 57. This is because when heat derived from the heating plate 57 is transmitted to the heat receiving portion 53, it becomes noise for heat transfer from the cooking container 56. In consideration of this noise problem, the flange portion of the heat receiving portion 53 picks up the radiant heat from the heating plate 57 that becomes noise, so that it is reduced as much as possible. It is better to keep as far as possible from the circumference.

Japanese Patent Laid-Open No. 2004-357883

  However, in the temperature sensor as shown in FIG. 5, for safety, priority is given to detection of air heating of the heating plate 57 during a microcomputer runaway, for example, reliable fusing of the thermal fuse. It is necessary to ensure sufficient contact between the heat receiving portion 53 and the heating plate 57 in a reliable and sufficient area. For this reason, there is no choice but to accept that the collar of the heat receiving part 53 receives direct radiation of the radiant heat from the heating plate 57, and the temperature detection accuracy of the cooking container 56 based on the temperature of the heat receiving part 53 is sacrificed. is there.

  Accordingly, an object of the present invention is to push back by a heating plate disposed inside a cooking vessel installation chamber and a cooking vessel installed on the heating plate, and the cooking vessel is removed from the heating plate. A temperature sensor urged to move forward, and the heat receiving portion of the temperature sensor is placed in the cooking container installed on the heating plate in a state of being passed through the hole of the heating plate. In the heating cooker that comes into contact, the heat of the heating plate is sufficiently transferred to the heat receiving portion of the temperature sensor in a state where the cooking vessel is removed from the heating plate, and the temperature detection accuracy of the cooking vessel is prevented from being lowered. That is.

  In order to achieve the above object, the present invention is directed to a heating plate disposed inside a cooking vessel installation chamber and a cooking vessel installed on the heating plate to be moved backward, and the cooking is performed from above the heating plate. A temperature sensor biased to move forward when the container is removed, and the heat receiving portion of the temperature sensor is installed on the heating plate in a state of being passed through the hole of the heating plate. In the heating cooker in contact with the cooking container, the cooking apparatus includes a heat shielding cover that shields the heat receiving portion of the temperature sensor from the heating plate in a state where the cooking container is installed on the heating plate, The cover is pushed by the heat receiving portion when the cooking container is removed from the heating plate, and comes into contact with the heating plate, and when the cooking container is installed on the heating plate, the cover of the heat receiving portion After moving away from the heating plate following the retreat, Is restricted to retreat to a constant member is obtained by adopting a configuration in which a state of being separated from the heat-receiving part.

In the said structure, a heat receiving part is maintained in the state which contacted the cooking container by the forward side bias of a temperature sensor in the state by which the cooking container was installed on the heating plate. In this state, the heat receiving portion is shielded from the heating plate by the heat shield cover. Therefore, although heat conduction between the heat receiving portion and the cooking container is allowed, direct radiation of radiant heat from the heating plate to the heat receiving portion is prevented by the heat shielding cover.
When the cooking container is removed from the heating plate, the temperature sensor advances, that is, the heat receiving part advances. The heat shield cover is pressed by the moving heat receiving portion and comes into contact with the heating plate. In this state, since the heat shield cover contacts both the heat receiving part and the heating plate, heat conduction between the heating plate, the heat shield cover, and the heat receiving part is realized. Therefore, the heat of the heating plate is transmitted to the heat receiving portion of the temperature sensor with the cooking container removed from the heating plate.
Further, when the cooking container is installed on the heating plate, the temperature sensor moves backward, that is, the heat receiving portion moves backward. The heat insulating cover that has been pushed so as to come into contact with the heating plate by the heat receiving portion follows the retreat of the heat receiving portion, is separated from the heating plate by this retreat, and thereafter, the retreat is independently restricted by the fixing member. As a result, only the temperature sensor continues to move backward, and the heat shield cover is separated from the heat receiving portion. Since the heat shield cover is separated from the heat receiving portion and the heating plate, heat conduction does not occur between the heat receiving portion, the heating plate, and the heat shielding cover.
Therefore, according to the above configuration, in a state where the cooking container is installed on the heating plate, direct radiation of radiant heat from the heating plate to the heat receiving portion is prevented by the heat shielding cover, and each of the heating plate and the heat shielding cover There is no heat conduction between them. For this reason, even if a heat receiving part and a heat shield cover are enlarged, the fall of the temperature detection accuracy of a cooking vessel can be prevented. As a result, it is possible to provide a sufficient contact area between the heat shield cover, the heating plate, and the heat receiving part with the cooking container removed from the heating plate. It can be sufficiently transmitted to the heat receiving part.

  In the above configuration, since the heat shield cover is stopped by contact with the fixing member, the heating cooker is provided with an existing fixing member, for example, an outer container forming a cooking container installation chamber, between the outer container and the outer shell. A heat shield, an outer shell member, or the like can be used. Thereby, the said structure is realizable only by addition of a thermal-insulation cover. In addition, a fixing member can also be added to the existing heating cooker.

In the above-described configuration, the temperature sensor is supported by a compression coil spring installed in the advancing / retreating direction, and the advancing / retreating direction is provided to one of the immovable member having a portion facing the rear end of the temperature sensor and the temperature sensor. It is possible to employ a configuration in which a cylindrical portion is provided, and on the other side, a fitting insertion shaft is provided that moves relative to the inner periphery of the cylindrical portion as the temperature sensor moves forward and backward. Here, the immovable member is a member that does not move while the temperature sensor moves up and down.
In this configuration, the temperature sensor can be provided so as to advance and retract with a simple support structure using a compression coil spring. By adopting such a support structure, the temperature sensor is guided in the advancing / retreating direction by the inner periphery of the cylindrical portion and the fitting shaft, and the inclination of the temperature sensor with respect to the advancing / retreating direction is reliably prevented. For this reason, it is possible to prevent contact between the heat receiving portion and the heat insulating cover, and contact between the stopped heat insulating cover and the heat receiving portion. The immovable member and the fixing member can be configured as the same member or different members.

  As described above, the present invention is configured such that the heating plate disposed inside the cooking vessel installation chamber and the cooking vessel installed on the heating plate are pushed back and the cooking vessel is removed from the heating plate. In the heating cooker provided with a temperature sensor that is biased to move forward, the heating plate and the heat receiving portion of the temperature sensor with the cooking container removed from the heating plate by adopting the above configuration The fall of the temperature detection accuracy of a cooking container can be prevented, implement | achieving heat transfer in between.

Hereinafter, a heating cooker according to a first embodiment of the present invention will be described with reference to the accompanying drawings.
As shown in FIG. 1, the cooking device according to the first embodiment includes a cooking container installation chamber 1 provided in the body, a heating plate 2 disposed in the cooking container installation chamber 1, and a heating plate. 2 is configured as a rice cooker including a temperature sensor 4 that is pushed by the cooking container 3 installed on the upper surface 2 to move backward and is moved forward when the cooking container 3 is removed from the heating plate 2. Yes.

  The cooking container installation chamber 1 is formed by joining the upper end of the outer container 12 with the upper end open to the shoulder member 11 constituting the outer shell of the vessel.

  The heating plate 2 is disposed in the vicinity of the bottom of the outer container 12 and supports the bottom of the cooking container 3 on its upper surface. A hole 21 is opened in the vertical direction in a region of the heating plate 2 located below the bottom center of the cooking container 3. The heating plate 2 is integrated with an electric heater (not shown), and the whole is heated by the electric heater. In this embodiment, the heating part of the electric heater is cast in the heating plate 2. Of the lower surface of the heating plate 2, the portion around the hole 21 is provided horizontally.

  The cooking container 3 is a rice cooking pot with an open top.

  Below the outer container 12, there is provided a deep dish-shaped heat shield plate 14 positioned between the bottom member 13 constituting the outer shell of the container.

  As shown in FIGS. 2 and 3A, the temperature sensor 4 includes a substantially cylindrical sensor case 41 having a heat-sensitive portion (not shown) provided with an installation recess on the upper surface.

  A heat receiving portion 42 is provided at the upper end of the temperature sensor 4. The heat receiving portion 42 is configured by a cap-shaped metal cover that is fitted to the outer peripheral upper end portion of the sensor case 41. The heat sensitive part is the same as the conventional example.

  A horizontal portion facing the periphery of the hole 21 is provided at the bottom of the outer container 12, and the compression coil spring 5 is installed in this portion in a vertical direction so as to be at the same center as the hole 21 of the heating plate 2. ing. The sensor case 41 is passed through the compression coil spring 5 from the lower end side. The upper end of the compression coil spring 5 is received by a flange 42 a provided horizontally on the heat receiving portion 42. The sensor case 41 is supported by the compression coil spring 5 so as to be vertically movable and always urged upward.

  The outer container 12 and the heat shield plate 14 are respectively formed with holes 12a and 14a aligned vertically with the hole 21 of the heating plate 2, and the lower end of the sensor case 41 supported by the compression coil spring 5 is the hole 12a, 14a. Thereby, the lower end of the sensor case 41 faces the bottom member 13, and a descending space for the temperature sensor 4 is secured between the sensor case 41 and the bottom member 13.

  A vertical key 41 a is provided on the outer periphery of the sensor case 41 and is always fitted in a key groove 12 b formed at the edge of the hole 12 a of the outer container 12. Thus, the sensor case 41 is guided in the vertical direction and is prevented from rotating about the vertical axis.

  In addition, a vertical notch 41 b is formed at the lower end of the outer periphery of the sensor case 41. The notch 41b is inserted into the hole 12a of the outer container 12 and the hole 14a of the heat shield 14 from above, and the rib 13a protruding from the bottom member 13 is always inserted. By this insertion, the inclination of the sensor case 41 with respect to the vertical direction is restricted, and the rotation of the sensor case 41 around the vertical axis is reliably prevented.

  Further, a cylindrical portion 41 c that is closed at the upper end and opened at the lower end is provided in the internal space of the sensor case 41. On the other hand, the bottom member 13 (corresponding to the immovable member) having a portion facing the lower end of the temperature sensor 4 is fitted into an insertion shaft 13b that moves relative to the inner periphery of the cylinder portion 41c as the sensor case 41 moves up and down. Is provided. The sensor case 41 is always guided in the vertical direction without shaking by the sliding guide of the cylinder portion 41c and the insertion shaft 13b during the vertical movement, and the tilt with respect to the vertical direction is reliably prevented.

  Although not particularly illustrated, it is of course possible to provide a portion corresponding to the insertion shaft 13b on the sensor case 41 side and a portion corresponding to the cylindrical portion 41c on the bottom member 13 side.

  Around the temperature sensor 4 is provided a heat shield cover 6 formed in a cylindrical shape with the upper and lower ends open. The heat shield cover 6 has an upper cylindrical portion 61 with an open upper end, and a lower cylindrical portion 62 with a lower end continuous with a step at the lower end of the upper cylindrical portion 61, and is passed through the temperature sensor 4 from above. ing.

  As shown in FIG. 3A, the upper end annular wall 62a of the lower cylinder portion 62 is provided horizontally, and the compression coil spring is in a state where the cooking container 3 (not shown) is removed from the heating plate 2. 5 is pushed upward over the entire circumference by the flange portion 42a of the heat receiving portion 42 that receives the urging force 5. As a result, the upper end annular wall 62a is in contact with the lower surface of the heating plate 2 over the entire circumference on the horizontal plane, and the upward movement of the temperature sensor 4 is restricted.

  The inner periphery of the lower cylinder part 62 is provided with a margin so as to be separated from the outer periphery of the flange part 42a over the entire periphery. At the lower end of the lower cylinder portion 62, a downward protruding piece portion 62 b that protrudes in a pair in the circumferential direction is provided, and the protruding piece portion 62 b is inserted into the slit 12 c of the outer container 12. This insertion prevents the heat shield cover 6 from being displaced in the horizontal direction. As a result, contact between the inner periphery of the upper end annular wall 62a and the outer periphery of the flange portion 42a of the heat receiving portion 42 is prevented.

  The outer periphery of the upper end annular wall 62a is larger than the outer periphery of the flange portion 42a over the entire periphery. The inclination of the sensor case 41 is prevented by contact between the horizontal surfaces over the entire circumference of the flange 42a and the upper end annular wall 62a. Further, the upper end annular wall 62a that is slightly larger than the flange portion 42a is not caught on the inner periphery of the hole 21 of the heating plate 2.

  The shape and contact area of the contact surface between the upper annular wall 62a and the heating plate 2 can be set regardless of the shape and contact area of the contact surface between the flange 42a and the upper annular wall 62a. For example, in this embodiment, the outer diameter of the flange 42a is set to be the same as that of the conventional example, and the outer diameter of the upper end annular wall 62a is larger than the outer diameter of the flange 42a. The heat conduction path between the heating plates 2 is secured with an area larger than that of the conventional example, and the heat of the heating plate 2 is sufficiently transmitted to the heat receiving portion 42 in a state where the cooking container 3 is removed from the heating plate 2. can do. Specifically, it may be sufficient to blow the thermal fuse at the set temperature.

  In addition, in this embodiment, size reduction of the heat shield cover 6 can be achieved by forming the heat shield cover 6 from a material having a thermal conductivity equal to or higher than the heat receiving portion 42.

  The upper cylinder portion 61 is located between the inner periphery of the hole 21 of the heating plate 2 and the outer periphery of the central portion 42 b of the heat receiving portion 42 that passes through the hole 21. The inner periphery of the upper cylinder part 61 is spaced over the entire circumference with respect to the outer periphery of the central part 42 b, and the outer periphery of the upper cylinder part 61 is provided so as to be spaced over the inner periphery and the entire periphery of the hole 21. Contact between these is prevented by insertion of the protruding piece 62b.

  Here, of the lower end of the lower cylindrical portion 62, a portion other than the projecting piece portion 62b is a lower side portion 62c parallel to the bottom portion of the outer container 12, and this lower side portion 62c is in the vertical direction from the bottom portion of the outer container 12. Are separated by a length of L1. The upper surface of the central portion 42b of the heat receiving portion 42 is above the inner peripheral upper end of the hole 21 of the heating plate 2 by a length L2 in the vertical direction, and the upper end of the upper cylinder portion 61 is lower than the upper surface of the central portion 42b. It is like that. Thereby, when the cooking container 3 is installed on the heating plate 2, first, the upper surface of the center part 42b of the heat receiving part 42 is pushed, the temperature sensor 4 is lowered, and the upper part annular wall 62a is pushed by the flange part 42a. The heat shield cover 6 can be lowered as it follows. During the lowering, the heat shield cover 6 is prevented from being inclined with respect to the vertical direction by the insertion of the protruding piece 62b.

  The relationship between L1 and L2 is set to L1 <L2, and the temperature sensor 4 can be lowered more than the heat shield cover 6 by the difference. Thereby, when the temperature sensor 4 and the heat shield cover 6 are lowered by L1, the upper end annular wall 62a of the lower cylinder portion 62 is separated from the heating plate 2, but the heat shield cover 6 is a portion other than the projecting piece portion 62b. The lowering of the outer container 12 (corresponding to a fixed member) 62c is restricted by itself when it falls. Further, the temperature sensor 4 further continues to descend by a difference of L2−L1, and the upper end annular wall 62a can be separated from the flange portion 42a of the heat receiving portion 42.

  When the temperature sensor 4 is lowered by L2, the cooking container 3 is installed on the heating plate 2 as shown in FIG. By reliably preventing the temperature sensor 4 from tilting and guiding in the vertical direction by inserting the protruding piece 62b, the inner circumference of the lower cylinder 62 and the outer circumference of the flange 42a of the heat receiving section 42, the inner circumference of the upper cylinder 61, The spacing between the outer periphery of the central portion 42b of the heat receiving portion 42 and between the outer periphery of the upper cylinder portion 61 and the inner periphery of the hole 21 of the heating plate 2 is maintained. It is kept away from.

Further, in the state where the cooking container 3 is installed on the heating plate 2, the upper tube portion 61 is located between the outer periphery of the central portion 42 b of the heat receiving portion 42 and the inner periphery of the hole 21 of the heating plate 2, and the heat receiving portion The central portion 42 b of 42 is substantially completely shielded from the heating plate 2. The reason for the substantially complete shielding is to prevent the interference between the heat shield cover 6 and the cooking container 3 with respect to the shape of the bottom part of the cooking container 3, the heat shield cover 6 and the heat receiving part 42 in consideration of manufacturing and assembly errors. Therefore, it is because it set so that the upper surface of the center part 42b might protrude slightly upwards from the heat insulation cover 6. FIG.
Further, the lower end of the lower cylindrical portion 62 is in contact with the bottom portion of the outer container 12 so that the flange portion 42 a of the heat receiving portion 42 is shielded from the heating plate 2. Therefore, the radiant heat from the heating plate 2 is not directly irradiated on the outer periphery of the central portion 42 b of the heat receiving portion 42 except for the portion that is slightly exposed from the heat shield cover 6.

  In the state where the cooking container 3 is installed on the heating plate 2, the upper surface of the center part 42 b of the heat receiving part 42 contacts the center of the bottom part of the cooking container 3 and is pressed by the bias of the compression coil spring 5. Therefore, heat conduction between the heat receiving portion 42 and the cooking vessel 3 is allowed.

  In addition, although the stainless steel is utilized for the raw material of the heat insulation cover 6 in consideration of corrosion resistance and moldability, it is not limited to this, and it is preferable to use a low radioactive material as much as possible.

  In this embodiment, the heat shield cover 6 is made of a metal material, so that the heat shield cover 6 has heat reflectivity. Since the radiant heat from the heating plate 2 is reflected by the outer surface of the heat shield cover 6, it is difficult to transfer heat by the heat receiving portion 42.

  The reason why the corrosion-resistant material is used for the heat-insulating cover 6 is that it takes into account the spilling from the cooking container 3 and the adhesion of liquid during cleaning.

  The heating cooker according to the first embodiment has the above-described configuration, and with the cooking container 3 installed on the heating plate 2, the temperature sensor 4 by the compression coil spring 5 is attached upward (forward side). Due to the force, the upper surface of the central part 42b of the heat receiving part 42 is kept in contact with the bottom of the cooking container 3 (see FIG. 3B).

  In this state, the outer periphery and upper and lower surfaces of the flange portion 42 a of the heat receiving portion 42 and the outer periphery of the central portion 42 b are shielded from the heating plate 2 by the heat shield cover 6. Since the cooking vessel 3 is in contact with the upper surface of the central portion 42b, heat conduction between the heat receiving portion 42 and the cooking vessel 3 is allowed. The radiant heat from the heating plate 2 is hardly directly irradiated to the heat receiving part 42, is reflected by the heat insulating cover 6, and a part of the heat absorbed by the heat insulating cover 6 is transmitted to the heat receiving part 42 as radiant heat. .

  When the cooking container 3 is removed from the heating plate 2, the temperature sensor 4 is biased so as to rise (advance) by the compression coil spring 5, so that the upper annular wall 62 a of the heat shield cover 6 It is pushed by the collar part 42a of 42, and as a result, it is maintained in the state which contacted the heating plate 2 (refer Fig.3 (a)). In this state, since the upper end annular wall 62a of the heat shield cover 6 is in contact with both the flange 42a of the heat receiving portion 42 and the lower surface of the heating plate 2, the heat between the heating plate 2, the heat shielding cover 6 and the heat receiving portion 42 is increased. Conduction is realized.

  Moreover, when the cooking container 3 is installed on the heating plate 2, the upper surface of the center part 42b of the heat receiving part 42 is pushed to the bottom of the cooking container 3, and the temperature sensor 4 moves backward. The upper end annular wall 62a of the heat shield cover 6 that has been pushed so as to come into contact with the lower surface of the heating plate 2 by the flange portion 42a of the heat receiving portion 42 follows the retreat of the flange portion 42a of the heat receiving portion 42, and eventually the heating plate 2 After that, the backward movement is restricted to the bottom of the outer container 12 alone. Furthermore, only the temperature sensor 4 continues to move backward, and the upper end annular wall 62 a of the heat shield cover 6 is in a state of being separated from the flange portion 42 a of the heat receiving portion 42. The space between the outer periphery of the heat receiving portion 42 and the inner periphery of the heat shield cover 6 is kept separated by inserting the protruding piece portion 62b regardless of the presence or absence of the cooking container 3 on the heating plate 2 (FIG. 3 ( b)). That is, since the heat shield cover 6 is separated from the heat receiving part 42 and the heating plate 2, heat conduction does not occur between the heat receiving part 42, the heating plate 2 and the heat shielding cover 6.

As described above, the cooking device according to the first embodiment provides a sufficient contact area between the flange 42a of the heat receiving portion 42 and the heat shield cover 6 and a contact area between the heat shield cover 6 and the heating plate 2. In the state where the cooking container 3 is removed from the heating plate 2, the heat of the heating plate 2 can be sufficiently transmitted to the heat receiving portion 42 of the temperature sensor 4 through the heat shield cover 6. As a result, the thermal fuse of the heat sensitive part can be blown when air heating of the heating plate 2 occurs when the microcomputer runs away.
Furthermore, in this embodiment, heat conduction does not occur between the heating plate 2 and the heat shield cover 6 in a state where the cooking container 3 is installed on the heating plate 2, and the heating plate 2 for the heat receiving portion 42. Since the direct radiation of the radiant heat from the heat shield cover 6 is prevented, it is possible to prevent the temperature detection accuracy of the cooking container 3 from being lowered based on the temperature of the heat receiving portion 42.

  Note that the heat receiving part 42 is brought into contact with the center of the bottom of the cooking container 3 in consideration of the temperature balance of the cooking container 3, and may be brought into contact with the outer periphery of the cooking container 3 and the eccentric position of the bottom. Along with this change, the advancing / retreating direction of the temperature sensor 4 can be changed to the vertical direction, and can be inclined with respect to the vertical direction or can be made to be horizontal. Even in such a case, it is possible to operate without any trouble by preventing the displacement of the heat shield cover 6 by the sliding guide such as the cylindrical portion 41c and the fitting shaft 13b and the insertion of the protruding piece portion 62b.

  In the first embodiment, since the lowering of the heat shield cover 6 hits the outer container 12 which is an existing fixing member is restricted, the above-described effects can be obtained only by adding the heat shield cover 6.

  In the first embodiment, the shape of the heat insulating cover 6 can be changed as appropriate in relation to the fixing member, and a fixing member for restricting the lowering of the heat insulating cover 6 is newly added. You can also. As an example, a cooking device according to a second embodiment of the present invention will be described with reference to FIG. In the following, differences from the first embodiment will be mainly described, description of the same configuration is omitted, and the same reference numerals are used as appropriate.

  In the second embodiment, a cylindrical receiving member 7 having an open upper end is attached to the bottom of the outer container 12. The receiving member 7 includes an upper cylindrical portion 71 having an open upper end, and a lower cylindrical portion 72 that is continuous to the lower end of the upper cylindrical portion 71 with a step inward.

  The heat shield cover 60 has an upper cylinder part 61 and a lower cylinder part 63. The lower cylinder part 63 is a functional part corresponding to the lower cylinder part 62 in the first embodiment, and the outer periphery of the lower cylinder part 63 is the receiving member 7 in a state where the cooking container 3 (not shown) is removed from the heating plate 2. When the cooking vessel 3 is installed on the heating plate 2 (see FIG. 4 (a)), the lower end of the upper cylindrical portion 71 of the receiving member 7 is the upper annular wall. 72a is different in that the lowering is restricted (see FIG. 4B). The heat shield cover 60 is always fitted between the outer periphery of the lower tube portion 63 and the inner periphery of the upper tube portion 71 to prevent horizontal displacement, and the heat shield cover 60 is guided in the vertical direction. ing.

  In a state where the cooking container 3 is installed on the heating plate 2, the heat receiving portion 42 is shielded from the heating plate 2 by closing the lower cylinder portion 63 of the heat insulating cover 60 with the receiving member 7 (FIG. 4). (See (b)). At this time, the flange portion 42 a does not contact the upper end annular wall 72 a of the lower cylinder portion 72. The upper cylinder portion 61 of the heat shield cover 60 is in the same position as in the first embodiment.

  In the second embodiment, the receiving member 7 is used to shield a part of the heat receiving portion 42 (the flange portion 42a) from the heating plate 2, and accordingly, the lower cylindrical portion 63 of the heat insulating cover 60 is accordingly provided. Has been shortened.

  In the second embodiment, the heat shielding cover can be formed without increasing the number of members by forming an upwardly expanding burring portion having the same function as the receiving member 7 around the hole 12a of the outer container 12. Can be miniaturized.

Sectional drawing which shows the whole structure of the heating cooker which concerns on 1st Embodiment. 1 is an exploded perspective view of the temperature sensor shown in FIG. (A) Enlarged sectional view showing the vicinity of the temperature sensor in a state where the cooking container is removed from the heating plate of FIG. 1, (b) shows a state where the cooking container is installed on the heating plate from the state (a). Enlarged sectional view (A) Expanded sectional view showing the vicinity of the temperature sensor in a state where the cooking container is removed from the heating plate of the heating cooker according to the second embodiment, (b) The cooking container on the heating plate from the state of (a). Is an enlarged cross-sectional view showing the state where Sectional drawing which shows the whole structure of a prior art example

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,54 Cooking container installation chamber 2,57 Heating plate 3,56 Cooking container 4,51 Temperature sensor 5,55 Compression coil spring 6,60 Thermal insulation cover 7 Receiving member (fixing member)
11 Shoulder member 12 Outer container (fixing member)
12a, 14a, 21 Hole 12b Keyway 12c Slit 13 Bottom member (non-moving member)
13a Rib 13b Insertion shaft 14 Heat shield plate 41, 52 Sensor case 41a Key 41b Notch 41c Cylindrical part 42, 53 Heat receiving part 42a Ridge part 42b Central part 61, 71 Upper cylindrical part 62, 63, 72 Lower cylindrical part 62a, 72a Upper end annular wall 62b Projection piece part 62c Lower side part

Claims (2)

A heating plate arranged inside the cooking container installation room;
A temperature sensor that is pushed back by a cooking vessel installed on the heating plate and biased to move forward when the cooking vessel is removed from the heating plate, and a heat receiving portion of the temperature sensor Is a heating cooker that is in contact with the cooking container installed on the heating plate in a state of being passed through the hole of the heating plate,
A heat insulating cover that shields the heat receiving portion of the temperature sensor from the heating plate in a state where the cooking container is installed on the heating plate;
When the cooking container is removed from the heating plate, the heat insulating cover is pushed by the heat receiving portion and comes into contact with the heating plate, and when the cooking container is installed on the heating plate, A heating cooker characterized in that, after following the retreat of the heat receiving part and separated from the heating plate, the retreat is restricted by the fixing member alone and separated from the heat receiving part.   The temperature sensor is supported by a compression coil spring installed in the advancing / retreating direction, and a cylinder portion extending in the advancing / retreating direction is provided on one of the stationary member having a portion facing the rear end of the temperature sensor and the temperature sensor. The heating cooker according to claim 1, further comprising a fitting insertion shaft that moves relative to the inner periphery of the cylindrical portion as the temperature sensor moves forward and backward.

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