JP2023141040A - Cooker - Google Patents

Abstract

To provide a cooker in which water attached to biasing means biasing a lid body in an opening direction can be reliably recovered.SOLUTION: A cooker according to the present invention comprises a main body 1, a lid body 2 capable of opening/closing an upper opening of the main body 1, hinge springs 13A and 13B biasing the lid body 2 in an opening direction, a heating coil 11 heating a pan 4 capable of being housed in the main body 1, a board unit 41 driving the heating coil 11 and a lid heater 31, and a unit case 47 housing the board unit 41, the cooker further comprises a water receiving portion 62 between stretched portions 58A and 58B of the hinge springs 13A and 13B and the unit case 47, and thereby collects water attached to the hinge springs 13A and 13B, into the water receiving portion 62.SELECTED DRAWING: Figure 2

Description

The present invention relates to a heating cooker equipped with a lid that opens and closes with a hinge mechanism.

Conventionally, a rice cooker described in Patent Document 1 is known as a heating cooker. The rice cooker described in Patent Document 1 is equipped with a dew receiving case (5) detachably attached to the rear surface of the main body (1), and when the lid (3) is opened after rice cooking is completed, the condensation on the inner surface of the rice cooker is removed. The dew water flows down into the dew collecting groove (9), passes through the drainage hole (11), passes through the passage (13), and falls into the dew receiving case (5). When removing the dew accumulated in the dew catcher case (5), the case (5) is pulled out, and after draining, the empty dew catcher case (5) is returned to its original state.

On the other hand, in FIG. 2 of Patent Document 2, an extending portion of a biasing means that biases the lid body (2) in the opening direction extends to a position above the unit case housing the heating board assembly (44). equipment is shown. In the figure, no water receiving portion is provided between the extending portion and the unit case. That is, the water adhering to the extending portion is configured to drip onto the upper surface of the unit case and flow toward the front side or the like along the upper surface of the unit case.

Japanese Patent Application Publication No. 2004-230010 JP2021-052974A

As mentioned above, in the rice cooker described in Patent Document 1, condensation on the inner surface of the lid (3) can be reliably collected into the dew pan case (5), but it is difficult to remove the condensation condensation from the main body (1). There was a problem in that it required drainage, and the drainage work was complicated.

Furthermore, the rice cooker described in Patent Document 2 has a problem in that water adhering to the stretching portion cannot be reliably collected and allowed to flow along a predetermined path.

Furthermore, when making a heating cooker including a rice cooker more sophisticated (multifunctional), for example, in the rice cooker described in Patent Document 2, the heating board assembly (44) including the heating control means (22) becomes larger. As a result, the unit case that houses the heating board assembly (44) becomes larger, and as a result, the unit case comes into contact with the extension part, so the extension part is inserted into the unit case from the top surface of the unit case. It becomes a composition. In this case, there is a problem that water adhering to the extending portion cannot be reliably discharged, and water may flow into the unit case.

Therefore, the present invention solves the above-mentioned problems, and provides a heating cooker that does not require drainage work by the user and that can reliably collect water adhering to the biasing means that biases the lid in the direction of opening. The purpose is to provide

The rice cooker of the present invention includes a main body, a lid body that can open and close an upper opening of the main body, a biasing means that biases the lid body in the direction of opening, and a heating device that heats an inner pot that can be accommodated in the main body. A drive circuit for driving the heating means, and a case for accommodating the drive circuit, and a water receiving part is provided between the extension part of the urging means and the case.

According to the present invention, water adhering to the urging means can be reliably collected into the water receiving portion.

FIG. 1 is an upper perspective view of a rice cooker according to an embodiment of the present invention. FIG. 1 is a longitudinal sectional view of a rice cooker according to an embodiment of the present invention. FIG. 2 is a partial perspective view showing the water receiver and its surroundings with the rear cover of the present invention removed. FIG. 3 is a perspective view showing a state in which the lid and the like of the present invention are removed to expose a hinge spring. FIG. 2 is a front perspective view of a unit case according to an embodiment of the present invention. FIG. 2 is a rear perspective view of a unit case according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the cooking device of the present invention will be described with reference to the accompanying drawings. The embodiments described below are not intended to limit the scope of the invention as set forth in the claims. Moreover, not all of the configurations described below are essential requirements of the present invention.

1 to 6 show an embodiment of a heating cooker according to the present invention. First, the overall structure of the rice cooker as a heating cooker will be explained based on FIGS. 1 and 2. Reference numeral 1 denotes the main body, which has a substantially rectangular shape with the front and rear faces facing each other, and the left and right sides facing each other when viewed from above. , the top surface is open. Reference numeral 2 denotes a lid body that freely opens and closes the top opening of the main body 1, and like the main body 1, it has a substantially rectangular shape with the front and rear faces, left side and right side facing each other when viewed from above, and the top surface is substantially flat. It is composed of The main body 1 has a pot accommodating portion 3 with an open top surface, and when the lid 2 is opened, a bottomed pot 4 serving as a container for storing water and rice to be cooked is placed in the pot accommodating portion. It is configured to be removably housed in 3. The pot accommodating portion 3 is configured by combining a bowl-shaped inner frame 5 made of resin and the like, and the entirety is formed into a cylindrical shape with a bottom.

The pot 4, which is the inner pot, has a main material 7 made of aluminum with good thermal conductivity, and a heating element 8 made of a magnetic metal plate such as ferritic stainless steel is joined from the lower side of the outer surface of the main material 7 to the bottom. be. A heating coil 11 is provided on the outer surface of the inner frame 5 facing the bottom surface of the pot 4 from the lower side thereof as a heating means for heating the heating element 8 of the pot 4 by electromagnetic induction. When a high-frequency current is supplied to the heating coil 11, the heating element 8 of the pot 4 generates heat due to the alternating magnetic field generated by the heating coil 11, and the rice to be cooked in the pot 4 is heated during cooking and keeping warm. . Further, a pot sensor 12 serving as a pot temperature detection means is disposed at the center of the bottom of the inner frame 5 so as to elastically contact the bottom of the outer surface of the pot 4.

A hinge portion 13 serving as a connection portion with the main body 1 is provided at the rear portion of the lid body 2. Further, a lid operating body 14 is disposed in an exposed state on the front upper surface of the lid body 2, and when this lid body operating body 14 is pushed, the engagement between the main body 1 and the lid body 2 is released, and the main body Two hinge springs 13A and 13B provided at the rear of the upper part of the lid body 2 are configured to open the lid body 2 with the hinge shaft 13C of the hinge portion 13 as the center of rotation.

A steam port 15 is provided on the rear upper surface of the lid 2 to discharge steam generated from the food to be cooked in the pot 4 to the outside of the rice cooker. In addition to the steam vent 15 and the lid operating body 14, on the top surface of the lid 2, there is an LCD (Liquid Crystal Display) 16 as a screen display section for displaying various information related to rice cooking. It consists of an LED (Light Emitting Diode) display section 17 as a status display section and a touch sensor, and is disposed above the LCD 16, and is used to start cooking, select time, cooking course, etc. and operating means 19 are provided for each operation. Further, inside the lid body 2, there is a control PC (Printed Circuit) board equipped with display/operation control means (not shown) for controlling the LCD 16, the LED display section 17, and the operation means 19. 21 is placed.

An inner lid assembly 23 serving as a lower member of the lid 2 is disposed below the lid 2. The inner lid assembly 23 is made of a metal material and has a disc shape having approximately the same diameter as the upper opening of the pot 4, and includes an inner lid 24 that covers the upper opening of the pot 4, and a space between the inner cover 24 and the pot 4. The inner lid 24 is provided with a lid packing 25 as an elastic member provided around the entire outer circumference of the inner lid 24 in order to seal the inner lid 24, and a pressure regulating part 26 that adjusts the internal pressure of the pot 4. The annularly formed lid packing 25 comes into contact with the top surface of the pot 4 when the lid body 2 is closed as shown in FIG. 2, and closes the gap between the pot 4 and the inner lid 24. This is to seal the steam generated from 4.

Inside the lid body 2, a lid heater 31 as a lid heating means for heating the inner lid 24 and a thermistor-type lid temperature sensor 32 for controlling the temperature of the inner lid 24 by the lid heater 31 are provided. . A steam exhaust path 33 is formed inside the lid 2 to communicate the steam port 15 and the pressure regulating section 26 as a path for releasing the steam generated within the pot 4 to the outside.

The pressure regulating section 26 is provided with a pressure regulating valve 34 that opens and closes a steam exhaust path 33 between the inside of the pot 4 and the steam port 15. The pressure regulating valve 34 is ball-shaped and operates in conjunction with a solenoid 35 provided inside the lid body 2. When releasing the steam inside the pot 4 to the outside, the pressure regulating valve 34 opens the steam discharge path 33 and pressurizes or pressurizes the inside of the pot 4. When the pressure is to be reduced, the solenoid 35 rotates the pressure regulating valve 34 so as to close the steam exhaust path 33. When pressurizing, the food to be cooked in the pot 4 is heated by applying high-frequency electricity to the heating coil 11, the food to be cooked boils and steam is generated, and this steam fills the pot 4. When the internal pressure reaches a predetermined value, the steam exhaust path 33 is opened against the weight of the pressure regulating valve 34, thereby maintaining the pressure inside the pot 4 above atmospheric pressure. Further, a pressure sensor (not shown) is provided inside the lid body 2 facing the pressure regulating section 26 to detect the pressure inside the pot 4.

Reference numeral 38 denotes a pressure reducing means for reducing the pressure inside the pot 4 to be lower than normal atmospheric pressure when the lid 2 is closed to the main body 1. The pressure reducing means 38 reduces the internal pressure of the sealed pot 4 by energizing the solenoid 35 after the pot 4 is housed in the pot accommodating body 3 and the lid body 2 is closed, so that the pressure regulating valve 34 closes the steam exhaust path 33. decrease.

A unitized substrate unit 41 including a heating control means for controlling the heating coil 11, the lid heater 31, etc. is disposed on the inside rear side of the main body 1. The board unit 41 mainly includes a board main body 42, a heat sink 43 and various electronic components 44 mounted on the board main body 42. The board unit 41 is housed in a unit case 47 (see FIGS. 5 and 6) for electrically insulating and protecting the board unit 41.

FIG. 3 shows a state in which the rear cover 2A disposed on the rear side of the lid body 2 is removed. The hinge part 13 accommodates a hinge shaft 13C, a pair of left and right hinge sleeves 51A and 51B through which the hinge shaft 13C is inserted, a pair of left and right hinge springs 13A and 13B, and coil parts 52A and 52B of the hinge springs 13A and 13B. The shaft reinforcing plate 54 has a pair of left and right shaft insertion walls 55A, 55B through which the hinge shaft 13C is inserted.

The hinge shaft 13C is made of metal and is formed into a thin cylindrical shape. The hinge sleeves 51A, 51B are made of synthetic resin, and function as buffer members between the hinge shaft 13C and the coil portions 14A, 14B of the hinge springs 13A, 13B.

The hinge springs 13A, 13B are formed of torsion coil springs or the like, and act as biasing means for always biasing the lid 2 in the open direction. They are each held by an arm holding part (not shown) formed inside of 2.

The shaft reinforcing plate 54 has a bottom plate part 57, and the bottom plate part 57 is formed with substantially rectangular insertion holes 59A and 59B through which the extension parts 58A and 58B of the hinge springs 13A and 13B are inserted. . In the hinge springs 13A, 13B, arm portions 56A, 56B extend forward from one end of the coil portions 14A, 14B, and extension portions 58A, 58B extend downward from the other end of the coil portions 14A, 14B.

A unit case 47 is disposed below the bottom plate portion 57. As shown in FIGS. 5 and 6, a rectangular concave water receiving portion 62 with an open upper side is integrally formed on the upper surface portion 61 of the unit case 47. As shown in FIGS. The water receiver 62 has a front wall 63 , a rear wall 64 , a left wall 65 , a right wall 66 , and a bottom 67 . The front wall portion 63 is curved and continuous with the bottom portion 67, and the rear wall portion 64, left wall portion 65, and right wall portion 66 are formed substantially perpendicularly. As shown in FIGS. 2 to 4, the lower end portions 60A and 60B of the extending portions 58A and 58B of the hinge springs 13A and 13B extend to the inside of the water receiving portion 62. Therefore, the water that has flowed down along the extending portions 58A and 58B drips into the water receiving portion 62. Moreover, by making the water receiving part 62 into a concave shape and having a configuration in which the extending parts 58A and 58B extend into the inside thereof, the unit case 47 and the extending parts 58A, 58B is gaining distance until they come into contact with each other. Note that the extending portions 58A and 58B are not in contact with any of the front wall portion 63, the rear wall portion 64, the left wall portion 65, the right wall portion 66, and the bottom portion 67.

A water drain hole 69 passing through the water receiving portion 62 is formed in the right rear corner portion 68, which is the connection portion between the rear wall portion 64, the right wall portion 66, and the bottom portion 67 of the water receiving portion 62. The water dripped and stored in the portion 62 flows out of the water receiving portion 62 through this drain hole 69. The upper surface portion 61 is formed with a slope portion 61A that is gently sloped so that the front side is lower, and the water adhering to and dripping onto the upper surface portion 61 flows toward the front side along the slope portion 61A, and the unit case 47 flow along the front part 48 of the main body 1, or fall through the space S1 (see FIG. 2) between the pot accommodating part 3 and the unit case 47, and reach the legs 6 etc. provided on the bottom part 1A of the main body 1. The water is discharged to the outside of the main body 1 through the formed drainage hole 9.

In the upper surface portion 61, upwardly convex stepped portions 70 and 71 are formed on the left and right sides of the water receiving portion 62. At the rear end portion of the step portion 70, a barrier portion 72 is erected upward. The barrier part 72 has a vertical barrier part 72A extending in the front-rear direction and a horizontal barrier part 72B extending in the left-right direction. A barrier 73 is also provided upward at the rear end of the stepped portion 71, and has a vertical barrier 73A extending in the front-rear direction and a horizontal barrier 73B extending in the left-right direction.

A wiring holding portion 74 is formed on the rear side of the stepped portion 70. The step portion 70 and the barrier portion 72 prevent water that has adhered to or dripped from the upper surface portion 61 from flowing toward the wiring holding portion 74 and adhering to the wiring (not shown) held by the wiring holding portion 74. It is.

An opening 75 passing through the unit case 47 is formed on the rear side of the stepped portion 71 . The step portion 71 and the barrier portion 73 prevent water that has adhered or dripped on the upper surface portion 61 from flowing toward the opening 75 side, flowing into the unit case 47 from the opening 75, and adhering to the substrate unit 41. It is. In this embodiment, all of the slope portion 61A, the stepped portion 70, and the stepped portion 71 are provided on the upper surface portion 61, but a structure may be provided in which one or two of them are provided.

A water receiving step portion 76 lower than the upper surface portion 61 is formed below the water drain hole 69 . The water receiving stage 76 is gently sloped so that the rear side is lower, and the water adhering to and dripping onto the water receiving stage 76 flows rearward along the slope and reaches the rear surface 49 of the unit case 47. The water flows along the main body 1 or falls through the space S2 (see FIG. 2) between the main body 1 and the unit case 47, and then flows through the drainage holes 9 formed in the legs 6 etc. provided on the bottom surface 1A of the main body 1. Water is drained to the outside of the main body 1.

A weir wall portion 71 is erected on the water receiving stage portion 76 . The weir wall part 71 is located closer to the center in the left-right direction of the rice cooker than the position directly below the drain hole 69, so that water flowing down from the drain hole 69 to the water receiving stage part 76 is located in the center in the left-right direction of the rice cooker. This prevents the liquid from flowing to the side, flowing into the unit case 47 through the opening 75, and adhering to the substrate unit 41.

Here, an example of the flow of water will be explained. When the lid 2 is opened after cooking rice, water droplets adhering to the lid 2 or steam from the pot 4 may adhere to the hinge springs 13A, 13B, or condensation may occur on the hinge springs 13A, 13B due to temperature changes. Water adhering to these hinge springs 13A, 13B flows toward the extension parts 58A, 58B due to gravity when the lid body 2 is open. Then, as shown by the white arrow W shown in FIG. 3, the water flows downward along the extending portions 58A and 58B, and drips into the water receiving portion 62 from the lower end portions 60A and 60B. The water dropped into the water receiver 62 flows through the bottom 67 of the water receiver 62, flows out from the drain hole 69, and flows down to the water receiver 76. The water that has fallen into the water receiving stage 76 flows backward along the slope of the water receiving stage 76, flows along the rear surface 49 of the unit case 47, or flows between the main body 1 and the unit case 47. The water falls through the space S2 (see FIG. 2) and is drained to the outside of the main body 1 through drainage holes 9 formed in the legs 6 and the like provided on the bottom surface 1A of the main body 1.

As described above, the rice cooker of this embodiment includes the main body 1, the lid 2 that can open and close the upper opening of the main body 1, the hinge springs 13A and 13B that bias the lid 2 in the opening direction, and the main body 1. It includes a heating coil 11 that heats the pot 4 that can be accommodated, a board unit 41 that drives the heating coil 11 and the lid heater 31, and a unit case 47 that accommodates the board unit 41. , 58B and the unit case 47, the water adhering to the hinge springs 13A, 13B can be allowed to flow into the water receiver 62 and be reliably collected.

Furthermore, in the rice cooker of the present embodiment, the drain hole 69 for discharging water is formed in the water receiver 62, so that the drain hole 69 is used to specify the discharge route for the water stored in the water receiver 62. be able to.

In addition, the rice cooker of this embodiment has at least an inclined portion 61A that allows water to flow toward the front, and stepped portions 70 and 71 that prevent water from flowing toward the rear, on the upper surface portion 61 of the unit case 47. Either one is formed. Therefore, water adhering to and dripping onto the upper surface portion 61 tends to flow toward the front along the inclined portion 61A. Further, the stepped portion 70 prevents water from flowing toward the wire holding portion 74, thereby preventing water from adhering to the wire held by the wire holding portion 74. Further, the stepped portion 71 prevents water from flowing toward the opening 75, thereby preventing water from flowing into the unit case 47 from the opening 75 and adhering to the substrate unit 41.

Further, in the rice cooker of this embodiment, the water receiver 62 is formed integrally with the unit case 47, so that the number of parts can be reduced.

Furthermore, in the rice cooker of this embodiment, a water receiving stage part 76 is formed in the unit case 47 to receive water discharged from the drain hole 69, and the water receiving stage part 76 directs water in a predetermined direction. A weir wall portion 77 is formed to prevent the fluid from flowing. Therefore, water that has fallen from the drain hole 69 to the water receiving stage 76 is prevented from flowing toward the center in the left-right direction of the rice cooker, flowing into the unit case 47 through the opening 75, and adhering to the board unit 41. I can do it.

Note that the present invention is not limited to the above-described embodiments, and various changes can be made without departing from the spirit of the present invention. For example, in the above embodiment, the water receiving portion 62 is formed integrally with the unit case 47, but the water receiving portion 62 is formed separately from the unit case 47, and the extending portions 58A, 58B of the hinge springs 13A, 13B and the unit It may also be arranged between the case 47 and the case 47.

1 Main body 2 Lid body 4 Pot (inner pot)
11 Heating coil (heating means)
13A Hinge spring (biasing means)
13B Hinge spring (biasing means)
31 Lid heater (heating means)
41 Board unit (drive circuit)
47 Unit case (case)
58A Extended portion 58B Extended portion 61 Upper surface portion 61A Inclined portion 62 Water receiving portion 69 Drain hole 70 Step portion 71 Step portion 76 Water receiving step portion 77 Weir wall portion

Claims (5)

The main body and
a lid body that can open and close the upper opening of the main body;
urging means for urging the lid in a direction to open;
heating means for heating an inner pot that can be accommodated in the main body;
a drive circuit that drives the heating means;
a case accommodating the drive circuit;
A heating cooker comprising a water receiving portion between the extension portion of the urging means and the case. 2. The cooking device according to claim 1, wherein a drain hole for discharging water is formed in the water receiving portion. Claim 1, wherein the upper surface of the case is formed with at least one of an inclined part that allows water to flow to the front side and a step part that prevents water to flow to the rear side. Or the heating cooker according to 2. The cooking device according to any one of claims 1 to 3, wherein the water receiver is formed integrally with the case. The case is formed with a water receiving stage part that receives water discharged from the water drain hole, and the water receiving stage part has a weir wall part that prevents the water from flowing in a predetermined direction. 3. The heating cooker according to claim 2, wherein the cooking device is formed with:.

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