KR101815036B1 - Non-contacting temperature sensor assembly for electric rice cooker - Google Patents

Abstract

Disclosed is a non-contact type temperature sensor assembly for a rice cooker capable of measuring a temperature without directly contacting an inner pot of an electromagnetic cooker. The present invention relates to a rice cooker having a base body on which an inner pot is placed and installed inside the rice cooker body; A cover portion mounted on a bottom surface of the base body; A holder part which is fastened to each other at a lower portion of the cover part and in which a PCB is mounted; A temperature sensor member mounted on the holder portion and positioned in the cover portion; And a shielding member mounted on the holder to surround the temperature sensor member.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a non-contact type temperature sensor assembly for an electromagnetic cooker,

The present invention relates to a contactless temperature sensor assembly for a rice cooker, and more particularly, to a contactless temperature sensor assembly for a rice cooker capable of measuring a temperature without directly contacting the inner pot of the rice cooker.

In general, a cooking device such as a rice cooker refers to a device used for cooking food, and is divided into a resistance heater heating method and an induction heating method according to a heating method for cooking. The induction heating method refers to induction heating (IH) in which an inner pot housed inside the main body is induced by electromagnetic induction when a high frequency current is supplied to a coil wound around a lower portion of the main body.

1B is a cross-sectional view showing a configuration of a conventional contact type temperature sensor assembly applied to a conventional induction heating pressure cooker. FIG. 1A is a schematic view showing a configuration of a conventional induction heating pressure cooker.

 As shown in FIG. 1A, a conventional induction heating pressure cooker is constructed by heating an inner pot 4 selectively housed in a coil base 8 disposed in a main body 2 by induction heating IH, The cooking object is heated and cooked in a short time. When the lid 1 is closed, the inside of the inner pot 4 is closed to prevent the heat from being released, so that the high temperature So that the cooking can be efficiently performed and the temperature can be kept constant even at the time of warming.

A top heater plate 5 made of a metal material is fixed to the lower portion of the lid 1 and a packing 7 provided on the outer periphery of the top heater plate 5 is connected to the upper end of the inner pot 4, So as to seal the inside of the inner pot (4).

The top heater plate 5 is provided with a plurality of ducts connected to the pressure valve and the solenoid valve. In the outer periphery of the top heater plate 5, a flange formed on the upper end of the inner pot 2, And a locking ring 3 for performing a locking function is provided.

When a high frequency current controlled by the controller is applied to the induction heating coil 9 wound on the outer side of the coil base 8 housing the inner pot 4, The cooking is performed in such a manner that the heating body is heated by electromagnetic induction.

Meanwhile, the conventional induction heating pressure cooker is generally equipped with a contact type temperature sensor assembly. For example, as shown in FIG. 1B, a working coil base 11 is mounted inside a conventional induction heating pressure cooker, and a working coil 12 is wound on the lower surface of the working coil base 11.

A contact type temperature sensor assembly is mounted on the working coil base 11 to measure the temperature when the inner pot is seated. The contact type temperature sensor assembly is provided with a sensor body 13 so as to move up and down through the working coil base 11 and a sensor 14 is mounted inside the upper end of the sensor body 13.

Accordingly, when the inner pot (not shown) is mounted in the working coil base 11, the inner pot pushes down the sensor main body 13, and the sensor mounted on the sensor main body 13 measures the temperature of the lower surface of the inner pot, A measurement is made. That is, the sensor body 13 directly contacts the lower surface of the inner pot (not shown) to measure the temperature of the inner pot.

However, such a conventional contact type temperature sensor assembly has the following problems.

First, since the contact type temperature sensor assembly is subjected to temperature measurement only by contact, a structural consideration for efficient contact must be preceded, which makes it difficult to accurately measure the temperature.

Secondly, since the sensor main body 13 is vertically moved from the working coil base 11, water is penetrated through the gap between the sensor main body 13 and the working coil base 11 (for example, Is poured into the working coil base to infiltrate the water), thereby damaging internal electronic components and malfunctioning the rice cooker.

<Prior art>: Korean Patent Publication No. 2012-0000164 (Jan. 02, 2012)

The present invention provides a noncontact type temperature sensor assembly for an electromagnetic cooker which is developed for solving the above problems and is capable of accurately measuring temperature by noncontact sensing and improving airtightness to improve durability and prevent damage to the device .

According to an aspect of the present invention, there is provided a cooking apparatus comprising: a base body on which an inner pot is placed and installed inside a rice cooker main body; A cover unit integrally formed on a bottom surface of the base body; A temperature temperature sensor member located inside the cover portion and electrically connected to the PCB; And a shield member mounted on the bottom surface of the base body and mounted to surround the temperature sensor member.

And a holder portion which is opened at a part of the bottom surface of the base body and is fastened to each other at a lower portion of the cover portion.

A penetrating hole may be formed at the center of the cover portion so as to pass through the upper and lower portions, and a penetrating plate may be attached to the entrance side of the penetrating hole.

The temperature sensor member may be an infrared sensor.

The upper surface of the cover portion may be inclined toward the edge.

According to the present invention, accurate temperature measurement can be performed through a non-contact sensor (infrared sensor) provided inside the cover part, and the cover part is housed inside the sensor, thereby improving airtightness and securing device damage and airtightness.

FIG. 1A is a schematic view showing a configuration of a conventional induction heating pressure cooker,
1B is a cross-sectional view showing a configuration of a contact type temperature sensor assembly applied to a conventional induction heating pressure cooker,
2 is a sectional view of a non-contact type temperature sensor assembly of an electromagnetic cooker according to a first embodiment of the present invention,
Figure 3 is an exploded view of Figure 2,
4 is a sectional view of a non-contact type temperature sensor assembly of an electromagnetic cooker according to a second embodiment of the present invention,
Figure 5 is an exploded view of Figure 4,
6 is a sectional view of a non-contact type temperature sensor assembly of an electromagnetic cooker according to a third embodiment of the present invention,
7 is an exploded view of Fig.
FIG. 8 is a cross-sectional view of a non-contact type temperature sensor assembly of an electromagnetic cooker according to a fourth embodiment of the present invention,
9 is an exploded view of Fig. 8,
10A is a sectional view of a non-contact type temperature sensor assembly of an electromagnetic cooker according to a fifth embodiment of the present invention, and FIG.
10B is an exploded view of FIG. 10A.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 and 3, the temperature sensor assembly is mounted at the center of the bottom surface of the base body 90. The base body 90 is integrally formed with the base body 90 by injection molding.

Specifically, the cover portion 10 is formed with a peripheral wall 11, and a certain area (circular space in this embodiment) is formed therein. A shielding member 50 is positioned below the cover 10 and a temperature sensor member 40 is mounted inside the shielding member 50. [ Here, the shielding member 50 is made of a ferrite material or an aluminum material so as to suppress the noise caused by the operation of the working coil and its operation, and to protect the sensor. In addition, the upper surface of the cover portion 10 may be formed so as to be inclined toward the edge side so that even if water flows into the upper portion, the cover portion 10 may be flowed to both sides without flowing into the inside.

On the other hand, the shielding member 50 and the temperature sensor member 40 are mounted on the holder portion 80, respectively. A through hole h is formed at the center of the cover portion 10 and a permeable plate 60 is mounted on the upper portion of the through hole h.

Specifically, the PCB 70 is mounted on the lower portion of the holder portion 80, and the cover portion 10 is passed through the mounting portion 91 by the fixing member 30 (for example, bolts or screws) 10 are fixed to the holder 80.

On the other hand, the cover portion 10 and the holder portion 80 are fastened to each other through the fixing member 30 as described above. The temperature sensor member 40 is located inside the cover portion 10 without being exposed to the outside. Here, the temperature sensor member 40 may be an infrared sensor which is one of the non-contact temperature sensors.

In the meantime, the present invention has a configuration in which the temperature sensor member 40 is fastened to each other at the center of the cover portion 10 and the holder portion 80. Thus, the temperature sensor member 40 is prevented from directly touching the inner pot, and the infrared sensor (non-contact type sensor) is employed as the temperature sensor member 40 so that accurate temperature measurement can be performed without directly touching the inner pot. So that the appearance can be simplified and structurally simplified.

In addition, it is possible to prevent physical damage of the sensor due to a sudden rise in temperature which is a problem in the contact type temperature sensor assembly.

Further, according to the present invention, the cover portion 10 closes the gap with the conventional base body 90 in a form of covering the upper portion of the temperature sensor member 40, thereby preventing water from being introduced from the outside. This makes it possible to prevent damage to electronic components due to moisture infiltration.

4 and 5, the present invention can be configured by excluding the holder portion 80 in the above-described embodiment and fastening the PCB 70 to the bottom surface of the cover portion 10. [ As a result, the number of components can be reduced and the structure can be further simplified.

6 and 7, the present invention is not limited to mounting the PCB 70 on the lower surface of the cover 10 in the above-described embodiment, have. Further, in this embodiment, a configuration in which the holder portion 80 is attached to the lower portion of the cover portion 10 is provided.

8 and 9, the shielding member 50 and the holder 80 may be integrally formed in the above-described embodiment.

10A and 10B, the present invention can be applied to the case where the cover member 10 is formed of a shielding material by excluding the shield member 50 in the above-described embodiment, or the inside of the peripheral wall 11 of the cover member 10 By applying a shielding material to the side surface, the component can be reduced and the device can be simplified. In this case, it is needless to say that it is applicable without applying the shielding material according to the case (for example, when the temperature sensor member is not interfered with the IH magnetic force lines).

While the present invention has been particularly shown and described with reference to the particular embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

10: Cover part
30: Fixing member
40: Temperature sensor member
50: shield member
60: permeable plate
70: PCB
80:
90: Base body

Claims (7)

A base body on which an inner pot is seated and installed inside the rice cooker main body;
A cover unit integrally formed on a bottom surface of the base body and having a circumferential wall formed to have a predetermined space therein;
A shielding member positioned inside the peripheral wall of the cover portion and made of a ferrite material or an aluminum material;
A temperature sensor member located inside the shield member and electrically connected to the PCB; And
And a holder portion that is opened at a part of the bottom surface of the base body and is fastened to the lower portion of the cover portion with a fixing member and accommodates the temperature sensor member and the shielding member. Sensor assembly. The method according to claim 1,
Wherein the cover part is made of a shielding material or a shielding material is coated on an inner surface of the non-contact type temperature sensor assembly. The method according to claim 1,
And a shielding member mounted on a bottom surface of the base body and mounted to surround the temperature sensor member. delete The method according to claim 1,
A through hole is formed at the center of the cover portion so as to pass through the upper and lower portions.
And a penetration plate is mounted on an inlet side of the through-hole. The method according to claim 1,
Wherein the temperature sensor member is an infrared sensor. 3. The method according to claim 1 or 2,
Wherein the upper surface of the cover portion is inclined toward the edge.

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