JP5653060B2 - Induction heating cooker - Google Patents

Description

  The present invention relates to an induction heating cooker that can easily assemble air passage components and secure a work space when the air passage parts are attached to a main body, and can protect a cooling fan from water that has entered the air passage.

  In general, this type of induction heating cooker is provided with a top plate on which an object to be heated is placed on the upper surface of the main body, an intake port and an exhaust port are provided on the rear edge side of the top plate, and the intake air is provided below the top plate. A cooling fan, an output control board on which an electronic component having a heat sink is mounted, and an induction heating coil are arranged in an air path extending from the opening to the exhaust port. And in such a thing, the board | substrate case which fixes an output control board is provided in a part of air path, this board | substrate case comprises integrally the air path from the suction part of external air to a discharge part, and this board | substrate It is known that the output control board and the cooling fan are arranged in the air passage of the case, and the cooling fan is arranged so as to be applied to the vertical air passage connected to the air inlet (for example, see Patent Document 1).

JP 2006-173140 A (FIGS. 2 and 3)

  However, the board case that fixes the output control board is integrally formed from the air inlet part, and the cooling fan is incorporated in the board case, and the cooling fan is arranged so as to be placed on the vertical air passage connected to the air inlet. In this case, the substrate case itself becomes large, and it becomes difficult to secure a working space for incorporating the substrate case in the main body. Further, when water enters the air passage from the air inlet, there is a problem that it is not possible to prevent water from being applied to the cooling fan.

  The technical problem of the present invention is that it is easy to assemble air passage parts and secure a working space when attaching the air passage parts to the main body, and to protect the cooling fan even if water enters the air passage. Is to make it.

The induction heating cooker according to the present invention is provided with a top plate on which an object to be heated is placed on the upper surface of the main body, an intake port and an exhaust port are provided on the rear edge side of the top plate, and an intake port is provided below the top plate. In an induction heating cooker in which a cooling fan, an output control board on which electronic parts having a heat sink are mounted, and an induction heating coil are arranged in the air path from the air outlet to the exhaust port, the air path is detachable from the main body. The intake duct includes a vertical air passage connected to the intake port, and a horizontal air passage connecting the vertical air passage and the cooling fan. A substrate holder for holding the output control board, and an air path cover that is attached to the substrate holder and surrounds the heat sink, and the air path cover includes an upstream side edge of the output control board in plan view. Fix the cooling fan at the overlapping position. Provided in the cooling fan fixing part integral fit, the body is inserted a portion of the air path forming member, mounting portion to which the air path structure is mounted are provided, the air path forming body, Placed on the bottom of the main unit and slid toward the mounting part, it is mounted on this mounting part, and the air intake duct is slid to the mounting part and the air channel former under the mounting state and the main body are anti-mounted It is mounted by being inserted from above into a space formed between the wall on the part side .

In the induction heating cooker of the present invention, the air passage includes an air intake duct and an air passage forming body that are detachable from the main body, and the air intake duct includes a vertical air passage connected to the intake port, a vertical air passage, The air path forming body includes a substrate holder that holds the output control board, and an air path cover that is mounted so as to cover the substrate holder and surrounds the heat sink. the road cover, in a position that overlaps the upstream-side edge of the output control board in plan view, the cooling fan fixing portion for fixing the cooling fan is provided integrally, the body, one air passage forming body A mounting portion to which the air passage forming body is mounted is provided, and the air passage forming body is placed on the bottom surface of the main body and is slid toward the mounting portion, thereby mounting the mounting portion. The air intake duct is Since a structure that is mounted by inserting from above in a space formed between the is allowed to air passage forming body and the counter-attachment side of the wall of the body under installed state, the intake duct and the air path forming member Can be assembled to the main body after being assembled at different locations. For this reason, the assembling work is facilitated, and the assembly (the intake duct and the air passage forming body) itself is miniaturized, and it is easy to secure a working space when attaching them to the main body or to miniaturize the entire apparatus.
Furthermore, since the cooling fan fixing part for fixing the cooling fan is provided on the air passage cover side and separated from the intake duct, the horizontal distance from the intake port to the cooling fan can be increased. Even if water enters the air passage from the air, it is possible to prevent the cooling fan from being splashed and to protect the cooling fan.

It is explanatory drawing of the attachment procedure of the air path components of the induction heating cooking appliance which concerns on embodiment of this invention. It is explanatory drawing of the attachment procedure of the air path components of the induction heating cooking appliance which concerns on embodiment of this invention. It is a perspective view which shows the external appearance of the induction heating cooking appliance which concerns on embodiment of this invention from upper direction. It is a longitudinal cross-sectional view which shows the structure of the internal air path of the induction heating cooking appliance which concerns on embodiment of this invention from the side. It is a longitudinal cross-sectional view which shows the flow of the wind of the wind path part of FIG. FIG. 5 is a cross-sectional view taken along line AA in FIG. 4. It is a perspective view which shows transparently the air path structure of the induction heating cooking appliance which concerns on embodiment of this invention from upper direction. It is CC sectional view taken on the line of FIG. FIG. 5 is a cross-sectional view taken along line B-B in FIG. 4. It is a perspective view which shows the air path structure of the induction heating cooking appliance which concerns on embodiment of this invention from upper direction.

The present invention will be described below with reference to illustrated embodiments.
FIG. 1 and FIG. 2 are both explanatory views of the installation procedure of the air passage components of the induction heating cooker according to the embodiment of the present invention, and FIG. 3 shows the appearance of the induction heating cooker according to the present embodiment from above. FIG. 4 is a longitudinal sectional view showing the structure of the internal air passage from the side, FIG. 5 is a longitudinal sectional view showing the flow of wind in the air passage portion of FIG. 4, and FIG. 6 is the AA line of FIG. 7 is a perspective view transparently showing the air path configuration from above, FIG. 8 is a cross-sectional view taken along line CC in FIG. 7, and FIG. 9 is a cross-sectional view taken along line BB in FIG. 10 and 10 are perspective views showing the air passage configuration from above.

  The induction heating cooker according to the present embodiment is provided with a top plate 2 for placing an object to be heated on the upper surface of the main body 1 as shown in FIG. The top plate 2 is provided with an intake port 1a and an exhaust port 1b on the rear edge side. Further, as shown in FIGS. 3 and 4, an output in which an electronic component having a cooling fan 3 and a heat sink 4 is mounted in an air path from the intake port 1 a to the exhaust port 1 b below the top plate 2 of the main body 1. Control board 5 and induction heating coils 6a and 6b are arranged. Further, a radiant heater 6c is arranged at the center on the back side on the main body 1, that is, at a position off the wind path on the main body 1 as shown in FIG.

  The main body 1 has an internal space defined by upper and lower chambers by horizontal plates 7 arranged below the induction heating coils 6a and 6b, and the lower chambers are left and right chambers when viewed from the front by the vertical plates 8. The right chamber communicates with the intake port 1a, and the left chamber communicates with the exhaust port 1b. Further, in the left chamber of the main body 1, a box body of the grill 9 is accommodated with a gap as shown in FIGS. 6, 9, and 10. 9 is formed with an opening 8a that communicates the gap 11 formed between the side wall 9a of the box 9 and the vertical plate 8 with the right chamber. That is, the vertical plate 8 divides the chamber in which the output control board 5 is provided from the chamber in which the grill 9 is provided, and both chambers communicate with each other through the opening 8a.

  More specifically, the output control board 5 on which electronic components including the cooling fan 3 and the heat sink 4 are mounted is disposed on the right indoor side partitioned by the vertical plate 8 in the air passage. The air path is one of the first air path 21 extending from the intake port 1 a to the cooling fan 3 and the branch path branched into two branches immediately after the cooling fan 3, and is one of the air blown by the cooling fan 3. The other side of the second air passage 22 for directing the part directly to the induction heating coils 6a, 6b through the opening 7a of the horizontal plate 7 and the bifurcated branch immediately after the cooling fan 3, and internally controlling the output The substrate 5 is disposed, and the third air passage 23 is formed so that the remaining air blown by the cooling fan 3 passes through the heat sink 4 portion, that is, there is no dead space around the heat sink 4. ing. The third air passage 23 is further bifurcated on the downstream side of the heat sink 4, and one of the branch passages passes a part of the air that has passed through the heat sink 4 portion to the opening 7 a of the horizontal plate 7. It is comprised as the 4th air path 24 made to direct to the induction heating coils 6a and 6b through the communication part 12a which partitions off. The other branch of the third air passage 23 is a fifth air passage 25 that directs the remaining air that has passed through the heat sink 4 portion directly from the gap 11 through the opening 8a of the vertical plate 8 to the exhaust port 1b. It is configured.

  As shown in FIGS. 1 and 2, the first air passage 21 has a vertical air passage 21a connected to the intake port, and a resin air intake having a horizontal air passage 21b that connects the vertical air passage 21a and the cooling fan 3 in communication. The air intake duct formed by the duct 13 is separable from other air passages when the main body is open before the top plate 2 is installed, and is formed at the rear portion of the right ventricle as indicated by an arrow in FIG. It can be mounted by being inserted into the storage unit 27 from above. Here, the intake duct housing portion 27 refers to a space formed between the air passage formation body 26 and the main body rear wall when an air passage formation body 26 described later is assembled to the main body 1. . The air intake duct 13 is mounted so as to fill the space, that is, the air intake duct storage portion 27, thereby preventing rattling of the air passage forming body 26 attached in advance.

  Further, the intake duct 13 is provided with a weir 13a on the lower front side of the vertical air passage 21a, and the rear of the weir 13a is configured as a water reservoir 13b. Further, the intake duct 13 is provided with a draining rib 13c at a turning portion from the vertical air passage 21a to the horizontal air passage 21b above the water reservoir 13b. The draining ribs 13c are formed in a plate shape that hangs down from the front wall of the vertical air passage 21a into the area of the water reservoir 13b, and are installed at a distance g behind the weir 13a. As a result, even when water enters the vertical air passage 21a from the intake port 1a, the intruded water can be prevented from flowing from the vertical air passage 21a to the horizontal air passage 21b, and water can be applied to the cooling fan 3. Can be prevented. The front wall of the weir 13a and the vertical air passage 21a may be installed without shifting to a horizontal position, and the draining rib 13c may be an inclined plate whose lower end is directed into the area of the water reservoir 13b.

  As shown in FIGS. 1 and 2, the second air passage 22 and the third air passage 23 are configured by a resin air passage forming body 26 that is detachably attached to the main body 1 and forms an air passage together with the vertical plate 8. ing. The air channel formation body 26 is mounted on the bottom surface of the right chamber as shown by the arrow in FIG. 2 in the open state of the main body before the top plate 2 is installed, and is slid forward in that state. It can be done. The above-described intake duct housing portion 27 refers to a space formed between the air passage forming body 26 and the rear wall of the main body that is slid forward and in the mounted state. The air path forming body 26 includes a substrate holder 14 that holds the output control board 5, and an air path cover 12 that is mounted so as to cover the substrate holder 14 and surrounds the heat sink 4. The cooling fan fixing portion 12b for fixing the cooling fan 3 is integrally provided at a position overlapping with the upstream side edge of the output control board 5 in a plan view, that is, at a portion serving as a branch point of the branch path. ing. Here, a fourth air passage 24 and a fifth air passage 25 are also formed by the substrate holder 14, the vertical plate 8 and the air passage cover 12, but these air passages are also the second air passage 22 in the same manner as the intake duct 13. And it may be configured to be separable from the third air passage 23. Note that the fourth air passage 24 may be formed only by the air passage cover 12.

  Moreover, the air path cover 12 has the partition plate 12c by which the air blown with the cooling fan 3 was inclinedly arranged to divide into the 2nd air path 22 and the 3rd air path 23 like FIG.4 and FIG.5. ing. The partition plate 12c is arranged such that the front end side 12d extending toward the cooling fan 3 is shifted upward from the center position of the cooling fan 3, and the side having a wide inlet to the cooling fan 3 is connected to the air path resistance by the heat sink 4. The inlet of the third air passage 23 having a large air flow and the narrow inlet of the cooling fan 3 are used as the inlet of the second air passage 22 having a low air passage resistance.

  An opening 7b for guiding the air that has cooled the induction heating coils 6a and 6b to the exhaust port 1b is formed behind the induction heating coil 6b in the horizontal plate 7 as shown in FIGS. A slit 1d that guides the air that has cooled the induction heating coils 6a and 6b to the exhaust port 1b is also formed in the back wall portion 1c adjacent to the portion 7b. And all the air paths (1st thru | or 5th air paths 21-25) including the opening part 7b and the slit 1d are connected with the exhaust port 1b, and the exhaust port 1b is common. Similarly, the intake port 1a is also common. Although the grill 9 has a separate intake port, the exhaust is connected to the exhaust port 1b via a grill duct 9b shown in FIG. In addition, the operation part 15 of the induction heating coils 6a and 6b and the radiant heater 6c is provided in the front edge part of the top plate 2 like FIG.

Next, operation | movement of the induction heating cooking appliance of this Embodiment is demonstrated.
First, when the user places an object to be heated (not shown) on the induction heating coil 6a or 6b of the top plate 2, operates the operation unit 15, sets induction heating, and starts cooking, the output control board 5 outputs a control signal to the corresponding induction heating coil 6a or 6b. By this control signal, the induction heating coil 6a or 6b generates a magnetic flux by flowing a high frequency current therein, and an eddy current flows through the heated object by the magnetic flux, and the heated object itself generates heat and is heated.

  When cooking is started, the output control board 5 also outputs a control signal to the cooling fan 3 at the same time, and the cooling fan 3 is driven by this control signal, and the first air path from the intake port 1a as shown in FIG. The outside air is sucked through 21 and the air blowing is started.

  The air blown by the cooling fan 3 flows into a bifurcated air passage immediately after the cooling fan 3, that is, the second air passage 22 and the third air passage 23, and the air that has flowed into the second air passage 22 is shown in FIG. 7 and 8, the induction heating coils 6a and 6b are cooled directly through the opening 7a of the horizontal plate 7 toward the induction heating coils 6a and 6b, and then the opening 7b and the rear wall of the horizontal plate 7 are cooled. It is led to the exhaust port 1b through the slit 1d of the portion 1c and discharged to the outside.

  Further, the air flowing through the third air passage 23 is directly sent to the heat sink 4 portion as shown in FIGS. 5 to 10, and is cooled by passing through the heat sink 4 portion. Cooling.

  In addition, the air that has passed through the heat sink 4 part flows into a further bifurcated air passage downstream of the heat sink 4, that is, the fourth air passage 24 and the fifth air passage 25, and then flows into the fourth air passage 24. As shown in FIGS. 5 to 8, the air is directed to the induction heating coils 6a and 6b through the communication portion 12a to cool the induction heating coils 6a and 6b, and then the opening 7b of the horizontal plate 7 and the back wall portion 1c. It is guided to the exhaust port 1b through the slit 1d and discharged to the outside.

  Further, the air flowing through the fifth air passage 25 is directly guided to the exhaust port 1b from the gap 11 through the opening 8a of the vertical plate 8 as shown in FIGS. 5, 6, 9 and 10, and discharged to the outside. Is done.

  During cooking, the cooling operation is performed as described above. When cooking is finished, the output control board 5 stops outputting the control signal, and stops the operation of the induction heating coil 6a or 6b and the cooling fan 3.

  Thus, in the induction heating cooker of this Embodiment, it is set as the air path structure provided with the intake duct 13 and the air path formation body 26 which can be attached or detached to the main body 1, respectively. The intake duct 13 includes a vertical air passage 21a connected to the intake port 1a, and a horizontal air passage 21b that connects the vertical air passage 21a and the cooling fan. The air path forming body 26 includes a substrate holder 14 that holds the output control board 5, and an air path cover 12 that is mounted so as to cover the substrate holder 14 and surrounds the heat sink 4. The cooling fan fixing portion 12b for fixing the cooling fan 3 is integrally provided at a position overlapping the upstream side edge of the output control board 5 in plan view. Therefore, the intake duct 13 and the air passage forming body 26 can be assembled to the main body 1 after being assembled at different locations. For this reason, the assembling work is facilitated, and the assembly (the intake duct and the air passage forming body) itself is miniaturized, and it is easy to secure a working space when attaching them to the main body or to miniaturize the entire apparatus.

  Moreover, since the cooling fan fixing | fixed part 12b for fixing the cooling fan 3 is provided in the air path cover 12 side, and is isolate | separated from the intake duct 13, the horizontal distance from the inlet port 1a to the cooling fan 3 should be taken large. Even if water can enter the air passage from the intake port 1a, the cooling fan 3 can be prevented from being splashed and the cooling fan 3 can be protected.

  Further, the water reservoir 13b is provided at the lower part of the vertical air passage 21a of the intake duct 13, and the draining rib 13c is provided at the turning portion from the vertical air passage 21a to the horizontal air passage 21b above the water reservoir 13b. Even when water enters the vertical air passage 21a from 1a, it is possible to prevent the intruded water from flowing from the vertical air passage 21a to the horizontal air passage 21b, and to reliably prevent water from being applied to the cooling fan 3. Can do.

  Further, since the draining rib 13c is formed in a plate shape that hangs down from the wall of the vertical air passage 21a into the area of the water reservoir 13b, the intruded water is reliably guided to the water reservoir 13b and dropped. And can be recovered.

  In addition, the air taken into the first air passage 21 from the outside by the cooling fan 3 flows to the second air passage 22 and the third air passage 23 that branch from immediately after the cooling fan, and the air that has flowed to the second air passage 22 is On the induction heating coils 6a and 6b side, the air flowing through the third air passage 23 is directly sent to the heat sink 4 portion for cooling the electronic components mounted on the output control board 5, respectively, and the induction heating coils 6a and 6b and the electronic components are respectively sent. Therefore, the induction heating coils 6a and 6b, the heat sink 4 and the electronic components, which are always at a high temperature during use, can be efficiently cooled.

  Further, the third air passage 23 is further bifurcated on the downstream side of the heat sink 4, and one of the branch passages is used to direct a part of the air that has passed through the heat sink 4 portion to the induction heating coils 6 a and 6 b. A fourth air passage 24, and a fifth air passage 25 for directing the remaining air that has passed through the heat sink 4 portion directly to the exhaust port 1b through the other of the branch passage branched at the downstream side of the heat sink 4 Therefore, the pressure loss downstream of the heat sink 4 can be reduced. For this reason, the air path resistance by the heat sink 4 of the 3rd air path 23 can be reduced, and the further efficiency improvement of the cooling of the heat sink 4 and an electronic component can be achieved.

  Further, the second air passage 22 and the third air passage 23 are integrally formed of a resin material, and the cooling fan 3 is arranged at a branch point thereof, that is, a position overlapping with the upstream side edge of the output control board 5 in plan view. Since the fixed portion 12b is provided, the number of parts is reduced and the assembly is facilitated.

  In addition, a partition plate 12 c that divides the air blown by the cooling fan 3 into the second air passage 22 and the third air passage 23 is provided, and the partition plate 12 c is arranged to be shifted from the center position of the cooling fan 3. The side where the inlet to the cooling fan 3 is wide is used as the inlet of the third air path 23 having a large air path resistance by the heat sink 4, and the side where the inlet to the cooling fan 3 is narrow is the side of the second air path 22 having a low air path resistance. Since the inlet is used, it is possible to adjust the balance of pressure loss between the second air passage 22 having a small air passage resistance and the third air passage 23 having a large air passage resistance with the heat sink 4, which is necessary for cooling the heat sink 4. Ensuring air volume is easy.

  Further, since the exhaust port 1b is common, there is only one exhaust port 1b, and there is no need to provide a plurality of exhaust ports, and the air path configuration is simplified.

  DESCRIPTION OF SYMBOLS 1 Main body, 1a Intake port, 1b Exhaust port, 2 Top plate, 3 Cooling fan, 4 Heat sink, 5 Output control board, 6a, 6b Induction heating coil, 12 Air path cover, 12a Communication part, 12b Cooling fan fixed part, 12c Partition plate, 13 Intake duct, 13a Weir, 13b Water reservoir, 13c Draining rib, 14 Substrate holder, 15 Operation unit, 21 First air passage, 21a Longitudinal air passage, 21b Cross air passage, 22 Second air passage, 23 3 air passages, 24 4th air passage, 25 5th air passage, 26 air passage formation body, 27 intake duct storage part.

Claims (3)

A top plate for placing an object to be heated is provided on the upper surface of the main body, an air inlet and an exhaust port are provided on the rear edge side of the top plate, and an air flow from the air inlet to the exhaust port is provided below the top plate. In the induction heating cooker in which a cooling fan, an output control board on which an electronic component having a heat sink is mounted, and an induction heating coil are arranged in the road,
The air path is
The main body has a detachable intake duct and an air passage forming body,
The intake duct is
A vertical air passage connected to the air inlet, and a horizontal air passage connecting the vertical air passage and the cooling fan.
The air path forming body is:
A substrate holder that holds the output control substrate; and an air path cover that is mounted so as to cover the substrate holder and surrounds the heat sink.
The air path cover is integrally provided with a cooling fan fixing portion for fixing the cooling fan at a position overlapping with the upstream side edge of the output control board in plan view .
In the main body, a part of the air path forming body is inserted, and a mounting portion to which the air path forming body is mounted is provided ,
The air passage forming body is mounted on the bottom surface of the main body and is mounted on the mounting portion by sliding toward the mounting portion, and the intake duct is slid on the mounting portion and is mounted. An induction heating cooker that is mounted by being inserted from above into a space formed between the air passage forming body and the wall on the side opposite to the mounting portion of the main body .   A water reservoir is formed at a lower portion of the vertical air passage of the intake duct, and a draining rib is provided above the water reservoir at a turning portion from the vertical air passage to the horizontal air passage. The induction heating cooker according to claim 1.   The induction heating cooker according to claim 2, wherein the draining rib is formed in a plate shape that hangs down from a wall of the vertical air passage toward an area of the water reservoir.

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