JP4450827B2 - Induction heating cooker - Google Patents

Description

  The present invention relates to an induction heating cooker in which a duct is provided on the lower side of a coil base on which an induction heating coil is placed, and particularly to wiring at an end portion of a lead wire constituting the induction heating coil.

  In recent years, demands for cooking by an induction heating cooker have been diversified. In order to maintain the performance of the induction heating cooker, it is required to efficiently cool the induction heating coil. In order to meet such a demand, an induction heating cooker has been proposed in which a duct is provided on a coil base on which an induction heating coil is placed, and the induction heating coil is cooled from the lower side (for example, Patent Documents). 1). This induction heating cooker is provided with a duct having a plurality of openings formed on the lower side of a coil unit composed of an induction heating coil and a coil base, and by blowing cooling air from the openings, induction heating is performed. The coil temperature distribution is reduced to improve reliability.

  Furthermore, the requirements for the installation location of the induction heating cooker are diversifying. In order to meet such a demand, an induction heating cooker is desired in which the wiring inside the casing at both ends of the lead wire constituting the induction heating coil is not complicated. As such, there exists an induction heating cooker in which a terminal block is provided on the side surface of a box housing a control circuit (see, for example, Patent Document 2). In this induction heating cooker, the complexity of wiring can be eliminated by connecting both ends of a lead wire constituting the induction heating coil to a terminal block on the side of the box.

JP 2004-214217 A (5th page, FIG. 2) JP 2000-82577 A (page 3, FIG. 2)

  The induction heating cooker described in Patent Document 1 can effectively cool the induction heating coil by causing cooling air to blow out to the lower side of the induction heating coil. However, the wiring at both ends of the lead wire constituting the induction heating coil is not considered, and there is a possibility that the wiring inside the housing becomes complicated. In addition, when the wiring inside the housing becomes complicated, the assemblability is poor and the structure inside the housing itself is also complicated. Furthermore, it is difficult to reduce the size of the induction heating cooker, and it is impossible to meet the requirements for the installation location.

  The induction heating cooker described in Patent Document 2 can prevent the wiring inside the casing from becoming complicated by providing a terminal block on the side surface of the box housing the control circuit. However, in order to realize effective cooling of the induction heating coil and improvement of assemblability, a terminal block has not been provided. In other words, in order to realize the purpose of sealing the box, only a terminal block is provided on the side of the box, and it is not intended to actively eliminate the complexity of wiring.

  The present invention has been made in order to solve the above-described problems. The induction heating coil effectively cools the induction heating coil, eliminates the complexity of wiring inside the housing, and improves the assembling property. A container is provided.

An induction heating cooker according to the present invention is disposed on an induction heating coil for heating an object to be heated, a coil base on which the induction heating coil is placed, and a lower side of the coil base, and cools the induction heating coil. A duct having a plurality of discharge holes formed on the top surface for ejecting air to the lower side of the induction heating coil; and the duct is integrally provided on the outer peripheral side surface of the duct to constitute the induction heating coil. And a terminal block for connecting the end of the lead wire to be connected.

In the induction heating cooker according to the present invention, since the terminal block for connecting the end of the lead wire constituting the induction heating coil is integrally provided on the outer peripheral side surface of the duct, the induction heating coil can be effectively cooled. In addition, the complexity of wiring inside the housing can be eliminated. Further, the lead wire constituting the induction heating coil can be incorporated into the housing in a state where the end of the lead wire is connected to the terminal block, and the assemblability can be improved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 is a perspective view showing induction heating cooker 100 according to Embodiment 1 of the present invention. FIG. 2 is a perspective view showing the internal configuration of the induction heating cooker 100. Based on FIG.1 and FIG.2, the structure of the induction heating cooking appliance 100 is demonstrated. This induction heating cooker 100 has a built-in type (system kitchen integrated type) in which a cooking pan mounting part by induction heating is provided in two on the left and right, and a cooking pot mounting part by radiant heater (RH) heating is provided in the back center. The case of an IH cooking heater will be described as an example. In addition, in the following drawings including FIG. 1, the relationship of the size of each component may be different from the actual one.

  As shown in FIG. 1, the induction heating cooker 100 includes a housing 10 and a glass top 30. An induction heating coil 21 for heating an object to be heated such as a pan or a frying pan, a coil base 22 on which the induction heating coil 21 is placed, and air for cooling the induction heating coil 21 are induction-heated in the housing 10. A duct 23 that is jetted to the lower side of the coil 21, a cooling fan 24 that supplies air into the duct 23, and a radial heater 40 that heats an object to be heated are mounted.

  The induction heating coil 21 is placed on the coil base 22 and heats an object to be heated. In other words, the induction heating coil 21 generates eddy currents in the heated object placed on the upper side of the induction heating coil 21 through the glass top 30 due to the lines of magnetic force generated by the current, so that the heated object itself generates heat. It has become. The coil base 22 is configured to place and hold the induction heating coil 21. The coil base 22 is preferably provided with a ferrite for preventing the magnetic field lines generated from the induction heating coil 21 from flowing downward, and a temperature sensor for detecting the temperature state of the object to be heated. .

  The duct 23 is provided on the lower side of the coil base 22 and has a function of ejecting air for cooling the induction heating coil 21 to the lower side of the induction heating coil 21. A terminal block 50 is provided on the outer peripheral side surface of the duct 23 (described in detail in FIG. 3). The cooling fan 24 is provided at an inlet of an air passage 26 formed in the duct 23, and in particular, supplies air for cooling the induction heating coil 21 into the duct 23. Note that the type of the cooling fan 24 is not particularly limited. For example, the cooling fan 24 may be composed of a sirocco fan or a blower fan.

  The radiant heater 40 is supplied with AC power of a normal commercial frequency, and the heater itself generates heat, whereby the object to be heated is heated by the radiant heat. The control means (not shown) controls the induction heating coil 21 and the radiant heater 40 based on an instruction from the user, and controls the number of rotations of the cooling fan 24. In addition, the coil unit 30 is comprised by combining the induction heating coil 21, the coil base 22, and the duct 23 integrally in a laminated state. Therefore, since the induction heating cooker 100 can be attached and detached in units of 20 coil units, the burden on the assembler can be greatly reduced.

  The glass top 30 is a top plate disposed on the upper surface side of the housing 10 and is made of heat-resistant glass or the like, on which an object to be heated such as a pan is placed. Three pan mounting portions 31 are formed on the upper surface side of the glass top 30. This pan mounting part 31 shows the position corresponding to the heating means (the induction heating coil 21 and the radiant heater 40) mounted on the housing 10, and serves as a standard for mounting the object to be heated. That is, the induction heating coil 21 is located at a position corresponding to the front (front side) left and right pan mounting portions 31 of the glass top 30, and the position corresponding to the pan mounting portion 31 at the rear (back side) center of the glass top 30. It can be seen that the radiant heaters 40 are respectively arranged, which is a measure of the position of the heating means.

  The glass top 30 is configured so that the outer peripheral portion is covered with a frame 32. An intake / exhaust port 33 for intake / exhaust air circulated inside the housing 10 is formed behind the frame 32. In addition, in FIG. 1, although the case where the pan mounting part 31 is formed in the glass top 30 is shown as an example, it is not limited to this, The pan mounting part 31 is formed in the glass top 30 It does not have to be. Moreover, although the case where the three pan mounting parts 31 are formed in the glass top 30 is shown as an example, the number of the pan mounting parts 31 is not specifically limited. Furthermore, although the case where the intake / exhaust port 34 is formed in the frame 32 is shown as an example, the present invention is not limited to this. For example, an intake / exhaust port may be formed on the rear surface of the housing 10, and an intake port and an exhaust port may be formed separately.

  In the first embodiment, the induction heating coil 21 is shown as an example in which two coils having different winding diameters are arranged concentrically. However, the present invention is not limited to this. For example, it may be configured by one coil, or may be configured by concentrically arranging three or more coils having different winding diameters. Further, two sets of the coil unit 20 and the cooling fan 24 are mounted corresponding to two-mouth induction heating.

  The operation unit for receiving support from the user, and a display unit such as a liquid crystal display device that displays the operation state of the induction heating cooker 100, the setting contents during operation, the trouble state, and the like to the user. 10 and the glass top 30. In addition, mounted components such as a high-frequency power supply board and a control board are also mounted in the housing 10. The control board controls the heating of the induction heating coil 21 and the radiant heater 40 based on the content of instructions from the user and temperature information from a temperature sensor (not shown).

  FIG. 3 is an exploded perspective view showing a part of the coil unit 20 in an exploded manner. Based on FIG. 3, the duct 23 which comprises the coil unit 20 is demonstrated in detail. As shown in FIG. 3, when the coil unit 20 is disassembled, the coil base 22 and the duct 23 are arranged in this order from the top. Although not shown here, the induction heating coil 21 is placed on the coil base 22 to constitute the coil unit 20. In addition, the duct 23 is separated into an upper duct portion 27 and a lower duct portion 28.

  The duct 23 includes a duct upper part 27 and a duct lower part 28. An air passage 26 is formed between the duct upper portion 27 and the duct lower portion 28. A cooling fan 24 is attached to the inlet of the air passage 26 so that air supplied from the cooling fan 24 is sent into the air passage 26. The air passage 26 is formed so that the area of the air passage cross-section gradually decreases in the air traveling direction. That is, the bottom surface (duct lower portion 28) of the duct 23 is formed so as to be inclined upward in the air traveling direction.

  In addition, a plurality of discharge holes 29 through which air from the cooling fan 24 is ejected toward the induction heating coil 21 is formed in the upper surface of the duct 23 (duct upper portion 27). Thus, air can be uniformly ejected from the discharge holes 29 by gradually reducing the area of the air passage cross section. The inclination angle of the duct lower portion 28 is preferably determined so that the amount of air ejected from each discharge hole 29 is uniform in consideration of the pressure loss in the air passage 26. Further, the duct 23 is formed in an annular shape so as to face the lower surface of the coil base 22, thereby enabling effective cooling of the induction heating coil 21.

  Next, the wiring at the end of the lead wire constituting the induction heating coil 21 in the housing 10 will be described. An opening 25 is formed at the center of the duct 23, and a flat terminal block 50 is provided on the outer peripheral side surface. The terminal block 50 is for connecting an end (one end) of a lead wire constituting the induction heating coil 21. The high frequency power supply board (not shown) and the induction heating coil 21 are relayed using the terminal block 50 as a relay point. Here, the case where three through holes 51 are formed in the terminal block 50 so as to correspond to the lead wires of two coils having different winding diameters constituting the induction heating coil 21 is shown as an example.

  That is, since the lead wires connected to the ground side of each coil having different winding diameters can be combined and connected to the terminal block 50, the three through holes 51 are formed in the terminal block 50. . Therefore, the number of through holes 51 formed in the terminal block 50 can be determined according to the number of coils having different winding diameters that constitute the induction heating coil 21. For example, when the induction heating coil 21 is configured by three coils having different winding diameters, the four through holes 51 may be formed in the terminal block 50.

  One end of the lead wire constituting the coil closer to the center side among the coils having different winding diameters constituting the induction heating coil 21 exists on the center side of the coil base 22. When this lead wire is connected to the terminal block 50, it is common to assume the contact of each lead wire and to protect the end of each lead wire with an insulating tube or the like. Therefore, if one end of a lead wire constituting a coil with a small winding diameter close to the center side is passed through the opening 25 formed in the center portion of the duct 23, the end portion of each lead wire is protected with an insulating tube or the like. Even without this, a sufficient insulation distance between the lead wires can be secured.

  Moreover, the duct lower part 28 is formed so as to be inclined upward in the air traveling direction. That is, a space that gradually increases toward the end of the air passage 26 is formed below the duct 23. Therefore, if the terminal block 50 is provided on the terminal end side of the air passage 26 in the duct 23, the lead wire that has passed through the opening 25 using the space formed on the lower side of the duct 23 is connected to the terminal block 50. Can be connected to. In other words, the space below the duct 23 can be effectively used as a wiring space. From the above, the wiring of each lead wire can be simplified while ensuring the insulation of each lead wire.

  Holes are formed in the terminals attached to both ends of the lead wire constituting the induction heating coil 21, and the lead and the through hole 51 of the terminal block 50 are fastened with a fastening member such as a screw. The end of the wire is fixed to the terminal block 50. That is, this work can be performed outside the housing 10 without being inside the housing 10. Therefore, as compared with the case where the lead wire constituting the induction heating coil 21 and the terminal block 50 are connected in the housing 10, it is possible to eliminate connection errors and connect each lead wire to the terminal block 50 reliably. .

  Moreover, although the material which comprises the terminal block 50 is not specifically limited, When the terminal block 50 is comprised with resin etc., the case where the terminal block 50 deform | transforms under the influence of a heat | fever arises. This is because the heat resistance of the terminal block 50 differs depending on the deflection temperature under load (thermal deformation temperature) of the material constituting the terminal block 50. If the terminal block 50 is deformed, the connection between each lead wire and the terminal block 50 is also affected, and a fastening member such as a screw may fall off. Therefore, as shown in FIG. 3, by attaching a reinforcing member 52 to the terminal block 50, deformation of the terminal block 50 due to heat is reduced, so that a connection failure between the lead wire and the terminal block 50 does not occur. .

  The reinforcing member 52 is made of a conductive member such as a metal plate that has the same potential between the terminals, and is mounted so as to sandwich the terminal block 50 from above and below. That is, the reinforcing member 52 is configured to sandwich the terminal block 50 from above and below by the upper plate 54 and the lower plate 55. Further, the reinforcing member 52 has a hole 53 formed in the upper plate 54 and the lower plate 55 at a position corresponding to the through hole 51 of the terminal block 50. A fastening member such as a screw is inserted into the hole 53 and the reinforcing member 52 is fixed to the terminal block 50. That is, the fastening member fastens the upper plate 54, the terminal block 50, and the lower plate 55, thereby connecting each lead wire to the terminal block 50 and fixing the reinforcing member 52 to the terminal block 50.

  In addition, although the case where the reinforcing member 52 is connected by a part of the upper plate 54 and the lower plate 55 is shown as an example in FIG. 3, the present invention is not limited to this. For example, the entire reinforcing member 52 may be formed in a U-shape, and may be slid and mounted on the terminal block 50. The upper plate 54 and the lower plate 55 may be completely separated from each other on the terminal block 50. You may wear it. In order to securely fix the reinforcing member 52 to the terminal block 50, at least one of the holes 53 may be a screw hole. For example, the entire hole 53 may be a screw hole, or only the hole 53 of the upper plate 54 or the lower plate 55 may be a screw hole. Further, the hole 53 of the upper plate 54 and the hole 53 of the lower plate 55 may be alternately screw holes. In addition, when attaching to the terminal block 50 in the state which isolate | separated the upper board 54 and the lower board 55 completely, it is good to use the hole 53 of the lower board 55 as a screw hole.

  As described above, by providing the terminal block 50 in the duct 23, the end portions of the lead wires constituting the induction heating coil 21 can be connected to the terminal block 50 after the coil unit 20 is assembled. That is, it is not necessary to connect the end of the lead wire constituting the induction heating coil 21 in the housing 10, and the coil unit is connected with the end of the lead wire constituting the induction heating coil 21 connected to the terminal block 50. 20 can be mounted in the housing 10. Therefore, the connection to the high frequency power supply substrate may be performed from the terminal block 50 after the coil unit 20 is mounted in the housing 10, and the labor required for replacement work and repair work can be greatly reduced.

  Further, it is possible to prevent the lead wire constituting the induction heating coil 21 from being stepped on when the coil unit 20 is mounted in the housing 10. Therefore, the chance that the lead wire is disconnected can be reduced, and the quality of the induction heating cooker 100 is improved. Furthermore, by using the terminal block 50 as a relay point, the wiring inside the housing 10 does not have to be complicated, and the assembly of the induction heating cooker 100 is improved. In addition, although the case where the terminal block 50 is substantially T-shaped is shown as an example, it is not limited to this.

  Further, the terminal block 50 may be provided integrally with the duct 23, the terminal block 50 and the duct 23 may be formed integrally, and a separate terminal block 50 may be provided integrally with the duct 23. It may be. When the separate terminal block 50 is provided in the duct 23, the terminal block 50 may be made of a material different from the material constituting the duct 23. Furthermore, when the terminal block 50 is made of a material having high heat resistance, the reinforcing member 52 may not be attached. In this case, in order to connect each lead wire to the terminal block 50 reliably, it is desirable to form the penetration part 51 in the shape of a screw hole.

Embodiment 2.
FIG. 4 is an enlarged cross-sectional view showing another example of the reinforcing member 52a attached to the terminal block 50 in an enlarged manner. Based on FIG. 4, the structure of the reinforcement member 52a which concerns on Embodiment 2 is demonstrated. In the second embodiment, differences from the first embodiment will be mainly described, and the same parts as those in the first embodiment will be denoted by the same reference numerals and description thereof will be omitted. Similar to the reinforcing member 52 according to the first embodiment, the reinforcing member 52a is composed of a conductive member such as a metal plate that has the same potential between the terminals, and is mounted so as to sandwich the terminal block 50 from above and below. ing. That is, the reinforcing member 52a is configured to sandwich the terminal block 50 from above and below by the upper plate 54a and the lower plate 55a. In addition, in this FIG. 4, the state which has not connected the lead wire which comprises the induction heating coil 21 shall be shown.

  The reinforcing member 52a has a hole 53a only in the upper plate 54a. The reinforcing member 52a is fixed to the terminal block 50 by fastening a screw 56 to the hole 53a. That is, since the reinforcing member 52a can be fixed to the terminal block 50 only by the hole 53a of the upper plate 54a, the hole 53a is not formed in both the upper plate 54a and the lower plate 55a. If the screw 56 is to be inserted from the lower side, the hole 53a may be formed only in the lower plate 55a, or the reinforcing member 53a may be mounted upside down on the terminal block 50.

  Further, the reinforcing member 52a may be configured to be connected by a part of the upper plate 54a and the lower plate 55a, like the reinforcing member 52 according to the first embodiment, and the entire reinforcing member 52a is U-shaped. It may be configured to be slid and mounted on the terminal block 50. By attaching the reinforcing member 52 a to the terminal block 50, deformation of the terminal block 50 due to heat is reduced, so that connection failure between the lead wire and the terminal block 50 does not occur.

Embodiment 3.
FIG. 5 is a perspective view showing a configuration of a terminal block 50a according to Embodiment 3 of the present invention. Based on FIG. 5, the terminal block 50a which is the characteristic part of Embodiment 2 is demonstrated. In the third embodiment, differences from the first and second embodiments will be mainly described, and the same parts as those in the first and second embodiments will be denoted by the same reference numerals and the description thereof will be omitted. It shall be. Further, a duct 23a in which a passage hole 35 through which a lead wire passes is formed is also illustrated. The terminal block 50a is different from the terminal block 50 according to the first embodiment in shape.

  The terminal block 50a is provided with a plate-like body 57 on the side surface opposite to the connection side with the duct 23a. That is, in addition to the flat shape of the terminal block 50 according to the first embodiment, the plate-like body 57 is provided. The plate-like body 57 is formed so as to protrude from the upper and lower surfaces of the terminal block 50a, and serves to make it less susceptible to the influence of heat from the surroundings. Further, it can also serve to reduce the deformation of the terminal block 50a due to the influence of heat.

  As shown in FIG. 5, if the passage hole 35 through which the lead wire passes is formed in the duct 23a (the duct upper portion 27a and the duct lower portion 28a), the lead wire can be passed from the passage hole 35 to the lower side of the duct 23a. And lead wires can be easily routed. That is, a lead wire not on the peripheral side of the coil base 22 can pass through the passage hole 35 to the lower side of the duct 23a, and the insulation distance of each lead wire can be increased without protecting the end of each lead wire with an insulating tube or the like. Enough can be secured. The position and number of the passage holes 35 may be determined according to the number and size of coils having different winding diameters that constitute the induction heating coil 21.

  The diameter of the passage hole 35 may be determined in consideration of the lead wire diameter. In this case, the passage hole 35 formed in the duct upper portion 27 a can function in the same manner as the discharge hole 29. For example, any of the discharge holes 29 may be used as the passage hole 35 through which the lead wire passes. On the other hand, it is desirable that the diameter of the passage hole 35 formed in the duct lower portion 28a is determined so that air leakage from the air passage 26 is minimized. For example, it may be formed in the same shape as the terminal shape, or may be sealed with a sealing member such as silicon rubber or epoxy adhesive after passing through the lead wire.

  Even in such a case, if the terminal block 50a is provided on the terminal end side of the air passage 26 in the duct 23a, the space formed on the lower side of the duct 23a is used to penetrate the upper and lower sides of the duct 23a. It is possible to connect the lead wire that has passed through the passage hole 35 formed in the terminal block 50a. Therefore, the space below the duct 23a can be effectively used as a wiring space. That is, by passing the lead wire through the passage hole 35 formed so as to penetrate the opening 25 and the duct 23a, the wiring of each lead wire can be simplified while ensuring the insulation of each lead wire.

Embodiment 4.
FIG. 6 is a perspective view showing a configuration of a terminal block 50b according to Embodiment 4 of the present invention. Based on FIG. 6, the terminal block 50b which is the characteristic part of Embodiment 4 is demonstrated. In the fourth embodiment, differences from the first to third embodiments will be mainly described, and the same parts as those in the first to third embodiments will be denoted by the same reference numerals and the description thereof will be omitted. It shall be. The terminal block 50b is different in shape from the terminal block 50 according to the first embodiment and the terminal block 50a according to the third embodiment.

  The terminal block 50 according to the first embodiment and the terminal block 50a according to the third embodiment are substantially T-shaped, but the terminal block 50b according to the fourth embodiment has the entire side surface on the outer peripheral side surface of the duct lower portion 28. It has a shape that can be provided. By comprising in such a shape, it can become difficult to receive the influence by a heat | fever. That is, since the entire side surface of the terminal block 50b is provided on the outer peripheral side surface of the duct lower portion 28, deformation due to heat can be reduced. In order to further reduce the influence of heat, the reinforcing member 52 or the reinforcing member 52a may be attached.

  The terminal block 50b may be formed integrally with the duct 23, or the terminal block 50b and the duct 23 may be formed separately. When the terminal block 50b and the duct 23 are formed separately, the terminal block 50b may be attached to the outer peripheral side surface of the duct 23. In this case, the terminal block 50b may be made of a material different from the material constituting the duct 23. Furthermore, although the case where the terminal block 50b is provided integrally with the duct 23 has been described as an example, the terminal block 50b may be provided integrally with the duct 23a.

  As described above, by providing the terminal block 50b in the duct 23, the end portions of the lead wires constituting the induction heating coil 21 can be connected to the terminal block 50b after the coil unit 20 is assembled. That is, it is not necessary to connect the end of the lead wire constituting the induction heating coil 21 in the housing 10, and the coil unit is connected with the end of the lead wire constituting the induction heating coil 21 connected to the terminal block 50 b. 20 can be mounted in the housing 10. Therefore, the connection to the high frequency power supply substrate may be performed from the terminal block 50b after the coil unit 20 is mounted in the housing 10, and the labor required for the replacement work and the repair work can be greatly reduced.

Embodiment 5.
FIG. 7 is a perspective view showing a configuration of a terminal block 50c according to Embodiment 5 of the present invention. FIG. 8 is an enlarged view showing the terminal block 50c in an enlarged manner. Based on FIG.7 and FIG.8, the terminal block 50c which is the characteristic part of Embodiment 5 is demonstrated. In the fifth embodiment, differences from the first to fourth embodiments will be mainly described, and the same parts as those in the first to fourth embodiments will be denoted by the same reference numerals and the description thereof will be omitted. It shall be. The terminal block 50c is different in shape from the terminal block 50 according to the first embodiment, the terminal block 50a according to the third embodiment, and the terminal block 50b according to the fourth embodiment.

  The terminal block 50 according to the first embodiment, the terminal block 50a according to the third embodiment, and the terminal block 50b according to the fourth embodiment all have a flat terminal connection portion, but according to the fifth embodiment. The terminal block 50c has a stepped connection portion, that is, a shape having horizontal surfaces with different heights. By configuring in such a shape, even when the terminals are densely packed, the terminals can be overlapped and connected as shown in FIG. That is, it is not necessary to secure the connection place of each terminal in the horizontal direction, the terminal block 50c can be reduced in size, and space saving inside the housing 10 can be realized.

  The terminal block 50c may be formed integrally with the duct 23, or the terminal block 50c and the duct 23 may be formed separately. When the terminal block 50 c and the duct 23 are formed separately, the terminal block 50 c may be attached to the outer peripheral side surface of the duct 23. In this case, the terminal block 50c may be made of a material different from the material constituting the duct 23. Furthermore, although the case where the terminal block 50c is provided integrally with the duct 23 has been described as an example, the terminal block 50c may be provided integrally with the duct 23a. Further, the reinforcing member 52 or the reinforcing member 52a can be attached to the terminal block 50c.

  As described above, by providing the terminal block 50c in the duct 23, the end of each lead wire constituting the induction heating coil 21 can be connected to the terminal block 50c after the coil unit 20 is assembled. That is, it is not necessary to connect the end of the lead wire constituting the induction heating coil 21 in the housing 10, and the coil unit is connected with the end of the lead wire constituting the induction heating coil 21 connected to the terminal block 50 c. 20 can be mounted in the housing 10. Therefore, similarly to the first and second embodiments, the connection to the high frequency power supply substrate may be performed from the terminal block 50c after the coil unit 20 is mounted in the housing 10, and is required for replacement work or repair work. Time and effort can be greatly reduced.

It is a perspective view which shows the induction heating cooking appliance which concerns on Embodiment 1. FIG. It is a perspective view which shows the internal structure of an induction heating cooking appliance. It is a disassembled perspective view which decomposes | disassembles and shows a part of coil unit. It is the expanded sectional view which expanded and showed other examples of the reinforcing member with which a terminal block is equipped. FIG. 6 is a perspective view showing a configuration of a terminal block according to Embodiment 3. FIG. 6 is a perspective view showing a configuration of a terminal block according to a fourth embodiment. FIG. 9 is a perspective view showing a configuration of a terminal block according to Embodiment 5. It is an enlarged view which expands and shows a terminal block.

Explanation of symbols

  10 casing, 20 coil unit, 21 induction heating coil, 22 coil base, 23 duct, 23a duct, 24 cooling fan, 25 opening, 26 air passage, 27 duct upper part, 27a duct upper part, 28 duct lower part, 29 discharge hole , 30 Glass top, 31 Pan mounting part, 32 Frame, 33 Air intake / exhaust port, 35 Passing hole, 40 Radiant heater, 50 terminal block, 50a terminal block, 50b terminal block, 50c terminal block, 51 through hole, 52 Reinforcing member , 53 hole, 54 upper plate, 54a upper plate, 55 lower plate, 55a lower plate, 56 screws, 100 induction heating cooker.

Claims (11)

An induction heating coil for heating an object to be heated;
A coil base on which the induction heating coil is placed;
A duct that is disposed on the lower side of the coil base and has a plurality of discharge holes formed on the upper surface for blowing out air for cooling the induction heating coil toward the lower side of the induction heating coil;
An induction heating cooker comprising: a terminal block provided integrally with the duct on an outer peripheral side surface of the duct and connecting an end portion of a lead wire constituting the induction heating coil. An induction heating coil for heating an object to be heated;
A coil base on which the induction heating coil is placed;
A duct that is disposed on the lower side of the coil base and has a plurality of discharge holes formed on the upper surface for blowing out air for cooling the induction heating coil toward the lower side of the induction heating coil;
A terminal block provided integrally with the duct, and connected to an end of a lead wire constituting the induction heating coil;
By gradually inclining the bottom surface of the duct upward in the air traveling direction, the area of the air passage cross section of the duct is gradually reduced, and the outer peripheral side surface on the space side formed below the bottom surface of the duct An induction heating cooker comprising a terminal block . The induction heating cooker according to claim 1 or 2, wherein the terminal block has a staircase shape in which the connecting portions of the lead wires of the terminal block have different heights . The induction heating coil is composed of a plurality of coils having different winding diameters,
The induction heating cooker according to any one of claims 1 to 3, wherein the terminal block is provided with through holes corresponding to the number of coils having different winding diameters constituting the induction heating coil . The induction heating cooker according to claim 4, wherein the through hole is a screw hole . The terminal block is sandwiched from above and below, and a conductive member having the same potential between the terminals is attached to the terminal block,
The induction heating cooker according to any one of claims 1 to 5 , wherein a hole is formed in the reinforcing member at a position corresponding to the through hole . The induction heating cooker according to claim 6, wherein at least one of the hole portions of the reinforcing member is a screw hole . An opening is provided in the center of the duct,
The induction heating cooker according to any one of claims 1 to 7, wherein one end of the lead wire is passed through the opening . The induction heating cooker according to claim 8, wherein one end of a lead wire constituting an inner coil among the coils constituting the induction heating coil is passed through the opening . The induction heating cooker according to claim 8 or 9, wherein a passage hole through which one end of a lead wire constituting the induction heating coil passes is provided in the duct separately from the opening . The induction heating cooker according to claim 10, wherein the passage hole is filled with a sealing member .

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