KR100829523B1 - Electric pressure rice cooker and lid assembly therof - Google Patents

Abstract

An electric pressure rice cooker and a lid assembly thereof are provided to prevent generation of accidents due to the steam pressure of high temperature inside an inner bowl by opening the inner bowl after discharging the steam. A lid assembly of an electric pressure rice cooker comprises a cover housing(210) installed at a main body to be opened/closed, a radiating plate(220), a link plate(230), a link(240), a steam discharging member(260), and a handle assembly(250). The radiating plate is assembled with the cover housing to open/close an inner bowl which is placed inside the main body. The link plate rotates at the upper part of the radiating plate. The steam discharging member placed at the cover housing to discharge the steam remaining inside the inner bowl. The handle assembly rotates at the cover housing to selectively turn the link plate, and is elastically lifted at the cover housing to operate the steam discharging member. The handle assembly consists of a handle(251) rotating and lifting at the cover housing, an arm(252), and a compressed spring(253) placed between the handle and the arm. The arm joined with the link plate rotates the link plate while rotating by the handle.

Description

ELECTRIC PRESSURE RICE COOKER AND LID ASSEMBLY THEROF}

1 is a view showing an electric pressure thermal cooker according to the present invention, a longitudinal cross-sectional view showing a cooking state in the inner cylinder is locked state

2 is a plan view of FIG. 1

Figure 3 is an electric pressure insulating rice cooker according to the present invention, a longitudinal cross-sectional view showing a state to discharge the steam inside the inner cylinder by pressing the handle after the end of cooking.

4 is a top view of FIG. 3

Figure 5 shows an electric pressure thermal cooker according to the present invention, the longitudinal cross-sectional view showing a state of unlocking the inner cylinder by turning the handle after the end of cooking.

6 is a plan view of FIG.

Figure 7 is a perspective view of the inside of the electric pressure insulating rice cooker lid according to the present invention

8 to 10 is a plan view for explaining the operation of the handle, the link plate and the link in the electric pressure thermal cooker lid according to the present invention, when unlocking the inner cylinder after the end of cooking

Figure 11 is an exploded perspective view showing a handle assembly of the electric pressure thermostat rice cooker lid according to the present invention

12 is a longitudinal sectional view showing a state before the handle is pressed;

Figure 13 is a longitudinal cross-sectional view showing a state after the handle is pressed

Figure 14 is an exploded perspective view showing a steam cover of the electric pressure insulating rice cooker lid according to the present invention

Figure 15 is a longitudinal cross-sectional view illustrating the operation of the push opening and closing button of the electric pressure insulating rice cooker lid according to the present invention, the blocking of the opening and closing push button in the locked state of the inner cylinder

Figure 16 is a longitudinal cross-sectional view illustrating the operation of the push opening and closing button of the electric pressure insulating rice cooker lid according to the present invention, the pressing of the opening and closing push button in the unlocking state of the inner cylinder

17 is an enlarged view of a portion A of FIG. 1;

18 is an enlarged view of a portion B of FIG. 5;

19 is an enlarged view of part C of FIG. 1;

* Explanation of symbols for main parts of the drawings

100: electric pressure thermal cooker

110: body

111: hinge

112: operation unit

113: push button

114: jamming projection

115a: Hinge section

115: rotating member

115b: Head of the rotating member

115c: end of the rotating member

115d: spring

120: inner tube

120a: upper projection of inner cylinder

200: lid

201: return spring

210: cover housing

211: lead ring

212: cover lead

212a: Steam cover mounting groove

212b: Guide

220: heat sink

221: rotation guide projection

222: limit projection

230: link plate

231: rotation guide slot

232: Cam Guide Slot

232a: first horizontal portion

232b: the second horizontal portion

232c: inclined part

234: first projection

235: detection protrusion

236: locking detection switch

237 magnet

238: sensor

240: link

241: hook section

242: restricted slot

243: cam guide protrusion

250: handle assembly

251 handle

252: arm

253: compression spring

251a: Hang Hook

252b: Handle anti-rotation groove

252d: jamming

252c: hollow boss

253: spring

251b: insertion boss

251c: longitudinal projection

251f: Bolt

252a: first slot

252e: stopper part of the arm

260: vapor exhaust member

261: first steam discharge pipe

262: Pressure Weight

263: release lever

263a: spring

265 hinge

264: Seesaw Plate

263: release lever

271: second steam discharge pipe

272: solenoid

280: steam cover

281: lower cover

282: mounting section

283: mounting packing

285: top cover

286 steam exhaust hole

295: air exhaust hole

296: air intake pump

297: pressure packing

298: main blade

299: sub blade

299a: step difference

290: safety valve assembly

291: rubber member

292: insertion pin

293: compression spring

The present invention relates to an electric pressure insulating rice cooker, and more particularly, since the inner cylinder can be opened after the steam remaining in the inner cylinder is discharged after the end of cooking, the lid can be easily opened and closed and the high temperature and high pressure steam remaining in the inner cylinder. The present invention relates to an electric pressure cooker and its lid capable of preventing safety accidents in advance.

In general, the electric pressure insulation rice cooker is a kitchen cooking equipment for cooking by heating the sealed pressure vessel (inner container or inner pot) containing the cooking water by electric heating means.

In general, the electric pressure thermal cooker can be divided into a main body, an inner barrel inserted into the main body and containing cooking water (cooking water), and a lid (assembly) installed to be opened and closed to the main body.

The main body is provided with a control unit for controlling a series of operations such as cooking, heat keeping, steam discharge, a display unit for displaying an operating state, and an operation unit for selecting a cooking mode or a heat keeping mode.

The inside of the main body is provided with a heating means such as an induction heater (IH) for heating the inner cylinder.

The lid is provided on the upper portion of the inner cylinder when cooking has a heat sink that serves as a lid of the inner cylinder to seal the inside of the inner cylinder.

In the electric pressure thermal cooker, the inner cylinder containing cooking water is heated in a sealed state with a heat sink, so the inside of the inner cylinder always maintains a high temperature and high pressure during cooking.

Therefore, the electric pressure thermal cooker is equipped with a steam discharge device and safety valves to maintain the inside of the inner cylinder at a proper pressure during cooking, and to discharge the steam remaining inside the inner cylinder after the completion of cooking to the outside of the main body to enable safe cooking. do.

In the case of the conventional electric pressure thermal cooker, since the operation of unlocking (opening) the inner cylinder after the completion of cooking and the operation of discharging the steam remaining in the inner cylinder are simultaneously performed, the steam remaining in the inner cylinder is discharged to discharge the inner steam of the inner cylinder. The inner cylinder could be pre-locked before maintaining the pressure below the reference pressure.

As such, when the inner cylinder is un-locked before the inner steam pressure of the inner cylinder is kept below the reference pressure, the lid itself is difficult to open by the high temperature and high pressure steam remaining in the inner cylinder, There was a serious problem that may cause a safety accident due to the high temperature and high pressure steam remaining therein.

In addition, since the steam discharge pipe for discharging the high temperature and high pressure steam remaining in the inner cylinder is exposed to the outside of the lid, the high temperature and high pressure steam discharged from the steam discharge pipe is directly injected to the user, which may cause burns.

Accordingly, the present invention has been made in view of the above-described problems, and by adopting a structure in which the inner cylinder can be unlocked after the steam pressure inside the inner cylinder drops below the reference pressure by discharging steam remaining inside the inner cylinder after the completion of cooking. The purpose of the present invention is to provide an electric pressure cooker and its lid which can prevent the safety accident caused by the high temperature and high pressure steam remaining in the inner cylinder in advance.

Another object of the present invention is to adopt a structure in which the high temperature and high pressure steam discharged through the steam discharge pipe after the end of cooking is not sprayed directly to the user by going through the steam cover, to prevent burns due to the user's carelessness during the high temperature and high pressure steam discharge The present invention provides an electric pressure rice cooker and a lid thereof which can be prevented.

Electric pressure thermal cooker of the present invention to implement the technical problem as described above; An inner cylinder containing cooking water therein and being accommodated in the main body and being heated; And a lid installed in the main body so as to be openable and closeable.

Here, the locking of the inner cylinder refers to a state in which the heat sink is in close contact with the upper portion of the inner cylinder by the link to seal the inside of the inner cylinder. The unlocking of the inner cylinder refers to a state of opening the inner cylinder by separating the heat sink from the upper portion of the inner cylinder by the link.

In addition, the lid of the electric pressure thermal cooker according to the present invention is a cover housing which is installed to be opened and closed in the body; A heat dissipation plate coupled to the cover housing to open and close the inner cylinder accommodated in the main body; A link plate rotatably installed on an upper portion of the heat sink; A link for selectively locking the inner cylinder by rotation of the link plate; A steam discharge member installed in the cover housing to discharge steam remaining in the inner cylinder; And a handle assembly rotatably coupled to the cover housing for selectively rotating the link plate and resiliently liftable to the cover housing for actuating the vapor exhaust member.

The link is positioned between the heat sink and the link plate, and a hook portion is formed on one side thereof, a restriction slot is formed on the other side, and a cam guide protrusion may be formed in the middle so as to selectively lock the inner cylinder while linearly reciprocating. have. Correspondingly, a limiting protrusion may be formed on an upper surface of the heat sink to fit into the limiting slot, and a cam guide slot may be formed on the link plate so that the cam guide protrusion is fitted thereto.

The cam guide slot may include a first horizontal portion formed on both sides thereof, a second horizontal portion, and an inclined portion connecting the first horizontal portion and the second horizontal portion.

A guide rail for guiding linear reciprocation of the link may be formed on an upper surface of the heat sink.

A plurality of rotation guide slots may be formed in the link plate to rotate the link plate, and a plurality of rotation guide protrusions may be formed on an upper surface of the heat sink to fit the rotation guide slot.

The cover housing may include a lead ring covering an upper portion of the link plate, and a cover lead positioned on the lead ring.

The vapor discharge member is in communication with the interior of the inner cylinder is a first steam discharge pipe positioned to be exposed to the outside of the cover lid; A pressure weight installed at an upper end of the first steam discharge pipe to maintain a constant internal steam pressure of the inner cylinder; A release lever elastically installed on the cover lid to release the pressure weight; And a seesaw plate, the one being in contact with the hand assembly and the other being in contact with the release lever so as to selectively operate the release lever by the lifting movement of the handle assembly.

A second steam discharge pipe for removing the steam pressure of the inner cylinder by a solenoid is installed at a position adjacent to the first steam discharge pipe, the upper end of the first steam discharge pipe and the second steam discharge pipe is formed on the cover lid Exposed to the mounting groove, the steam cover mounting groove may be mounted to the steam cover.

The steam cover has a lower cover having a flow path through which steam liquid flows on its bottom surface, and burn and discharge noise from the high temperature and high pressure steam coupled to the lower cover and discharged through the first steam discharge pipe and the second steam discharge pipe. It may be made of an upper cover to prevent.

The lower cover may be provided with a mounting portion for mounting the steam cover, the mounting portion may be provided with a mounting packing.

The handle assembly may include a handle rotatably installed in the cover housing and an arm connected to the link plate and rotating the link plate while being rotated by the handle; And a compression spring interposed between the handle and the arm.

The handle is guided by a guide piece formed in the cover housing, and a lower end of the handle may be provided with a hook that is caught by the lower end of the guide piece.

A first slot may be formed at one side of the arm so that the link plate may be rotated by the rotation of the arm, and a first protrusion may be formed at the link plate to be inserted into the first slot.

A latching protrusion is formed at one side of the main body, the opening / closing push button is elastically lifted and lifted by a spring on the cover housing, and a rotating member is installed inside the cover housing to be rotatable about a hinge part. The head of the rotating member is caught by the locking projection and the end of the rotating member is in contact with the open / close push button.

When the handle of the handle assembly is in a non-rotating position, the arm can block the opening / closing push button to prevent the lid from being opened incorrectly by a malfunction. Here, the fixed position of the handle is defined as the position of the handle when the inner cylinder is locked for convenience of description.

In addition, the present invention is further provided with a safety valve assembly that can prevent the inner cylinder is unlocked by preventing the rotation of the handle itself before removing the fine steam pressure remaining in the inner cylinder after the end of cooking.

The safety valve assembly is a rubber member which is elevated by the vapor pressure of the inner cylinder; An insertion pin placed on an upper surface of the rubber member and lifted together with the rubber member; And a compression spring installed on the insertion pin.

The handle rotation preventing groove is formed at the other side of the arm, and the insertion pin is selectively inserted in the handle rotation preventing groove.

The link reciprocates linearly in a radial direction about the center of the heat sink.

A sensing protrusion is formed on an upper surface of the link plate, and a locking sensing switch is installed on an upper surface of the lead ring to be operated by the sensing protrusion.

In the warming mode, an air discharge hole is formed at a position communicating with the inner cylinder so as to suck the air in the inner cylinder to the outside for forced discharge, and an air suction pump is connected to the air discharge hole.

A pressure packing is installed on an outer bottom surface of the heat sink, and at least one sub blade is formed on an outer circumferential surface of the pressure packing to prevent air intake into the inner cylinder. Steps may be formed in the sub blades.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an electric pressure thermal cooker according to the present invention, a longitudinal cross-sectional view showing a cooking state in the inner cylinder is locked state, Figure 2 is a plan view of FIG.

As shown in Figure 1 and 2, the electric pressure thermal cooker 100 of the present invention is a main body 110, the inner container which is housed in the cooking water contained in the main body 110 and heated for a predetermined time ( 120 and the lid 200 is installed to be opened and closed on the main body 110.

Inside the main body 110 is provided with a heating means (not shown), such as IH for cooking by heating the inner cylinder 120, the outer surface of the main body 110 to cook cooking water, such as cooking mode or warming mode The operation part 112 for doing so is provided.

The lid 200 is pivotally coupled to the main body 110 in a hinge 111 structure and is elastically supported by the return spring 201.

Electric pressure insulating rice cooker lid 200 of the present invention is a cover housing 210, a heat sink 220 is coupled to the cover housing 210, and a link plate rotatably installed on the top of the heat sink 220 ( 230). The cover housing 210 is further divided into a lead ring 211 and a cover lead 212.

The biggest feature of the electric pressure thermal cooker 100 of the present invention is, after the end of cooking, by the lifting (Up / Down) operation of the handle 251 to be described later, the steam remaining in the inner cylinder 120 is discharged Then, the inner cylinder 120 can be safely unlocked by the rotation (Rotation) operation of the handle 251.

In other words, in the prior art, since the inner cylinder is unlocked at the same time as the steam is discharged by the rotation of the handle after completion of cooking, the inner cylinder is opened in a state where the steam pressure inside the inner cylinder is not properly dropped to a pressure below the reference level. This was possible.

When the inner cylinder is unlocked in such a state that the internal steam pressure of the inner cylinder is not maintained at the sub-standard pressure, it is not only inconvenient to use because the user requires more force than usual to open the lid, There was a risk of safety accidents caused by high temperature and high pressure steam.

However, in the electric pressure insulation rice cooker of the present invention, after the cooking is finished, the user can easily open the lid because the inner cylinder can be unlocked after the inner cylinder is kept below the reference pressure by discharging steam remaining in the inner cylinder. In addition, safety accidents caused by high temperature and high pressure steam remaining in the inner cylinder can be prevented in advance.

Hereinafter, described in more detail with respect to the lid of the electric pressure thermal cooker according to the present invention.

In the electric pressure thermostat rice cooker lid 200 of the present invention, the lead ring 211 is located inside the lid 200 to reinforce the rigidity of the lid 200 itself, and as a mounting plate for mounting other components Perform the function.

The cover lid 212 is located at the outermost side of the lid 200 and serves to cover the entire upper surface of the lid 200.

The heat dissipation plate 220 capable of opening and closing the inner cylinder 120 accommodated in the main body 110 is coupled to the cover housing 210, more precisely, to the lower portion of the lead ring 211.

The heat dissipation plate 220 serves as a cover of the inner cylinder 120 and is detachably coupled to the cover ring 211 by a conventional fastening means, for example, a bolt (not shown).

A predetermined space is provided between the lead ring 211 and the heat sink 220, and the space includes a link plate 230, a link 240, a vapor discharge member 260, and the like.

The link plate 230 has a structure that is rotated on the upper surface of the heat sink 220, in order to enable the rotation of the link plate 230, a plurality of rotation guide slots 231 in the link plate 230 ) Is formed, and a plurality of rotation guide protrusions 221 are formed on the top surface of the heat dissipation plate 220 to be inserted into the rotation guide slot 231.

A link 240 for locking the inner cylinder 120 and the heat sink 220 selectively by the rotation of the link plate 230 is provided between the link plate 230 and the heat sink 220.

The link 240 linearly reciprocates in a radial direction about the center of the heat sink 220.

The link 240 may be installed on an upper surface of the link plate 230 according to a design change.

The link 240 has a structure capable of selectively locking the inner cylinder 120 while linearly reciprocating when the link plate 230 rotates.

Looking at the structure of the link 240, one side of the link 240 is a "c" shaped hook portion 241 is formed, the other side of the link 240 is a limit slot (Limit Slot) (242) Is formed, and the cam guide protrusion 243 is formed in the middle.

When the inner cylinder 120 is locked, the upper end protrusion 120a of the inner cylinder 120 and the end of the heat sink 220 are fitted into the hook portion 241.

Corresponding to the structure of the link 240, a limiting protrusion 222 is formed on the upper surface of the heat sink 220 to be fitted into the limiting slot 242, the link plate so that the cam guide protrusion 243 is fitted The cam guide slot 232 is formed at 230.

The cam guide slot 232 may be divided into three parts, and a first horizontal portion 232a and a second horizontal portion 232b are formed at both sides thereof, and the first horizontal portion 232a and the first horizontal portion 232a are formed. The inclination part 232c is formed in the position which connects 2 horizontal parts 232b.

When the cam guide protrusion 243 is located at the first horizontal portion 232a or the second horizontal portion 232b, the link plate 230 is rotated, but the link 240 does not move, and at this time, the inner cylinder ( 120 is locked or unlocked by link 240.

On the other hand, when the cam guide protrusion 243 is located on the inclined portion 232c, the link plate 230 is rotated, and the link 240 also linearly moves, wherein the inner cylinder 120 of the link 240 It is converted from the locked state to the unlocked state or from the unlocked state to the locked state by the linear motion.

The reason why the first horizontal portion 232a and the second horizontal portion 232b are formed in the cam guide slot 232 described above is that the link 240 does not immediately operate due to the rotation of the link plate 230. A delay time is given to the operation of the link plate 230 and the link 240 so that the inner cylinder 120 is firmly locked and the next operation is performed in a completely unlocked state, thereby preventing malfunction and preventing safety accidents. In order to increase the reliability of the product.

The upper surface of the heat sink 220 is formed with a guide rail 223 for guiding the linear reciprocation of the link 240, it is preferable to smooth the linear reciprocation of the link 240.

The cover housing 210 is provided with a handle assembly 250 that operates the vapor discharge member 260 and locks / unlocks the inner cylinder 120.

Looking at the structure of the handle assembly 250, the handle 251 is fitted into the mounting groove 212a formed in the cover lid 212 so as to rotate and lift.

A lower portion of the handle 251 is connected to the link plate 230 and an arm 252 for rotating the link plate 230 while rotating by the handle 251 is connected. A compression spring 253 is interposed between the handle 251 and the arm 252.

The handle 251 is guided by a guide piece 212b formed on the cover lid 212, and a locking hook 251a caught at a lower end of the guide piece 212b is provided at a lower end of the handle 251. Formed.

In the fastening structure of the arm 252 and the handle 251, when the handle 251 is elastically pushed up and down by the compression spring 253, the arm 252 does not interlock with the fixed position 2, but the handle 251 is rotated in conjunction with the handle 251 when the handle 251 is rotated.

More specifically, hollow bosses 252c having locking projections 252d are formed on both sides of the central upper surface of the arm 252. Correspondingly, an insertion boss 251b is inserted into the hollow boss 252c at the center lower surface of the handle 251 and fastened to the bolt 251f via the spring 253.

Then, both sides of the insertion boss 251b are formed with longitudinal locking projections 251c corresponding to the locking projections 252d.

Accordingly, the locking protrusions 252d and 251c do not contact each other when the handle 251 is raised by the support of the spring 253, but the locking when the handle 251 is pressed for vapor discharge. As the protrusions 252d and 251c are engaged with each other, the arm 252 can be rotated in conjunction with the handle 251.

As described above, when the user rotates the handle 251 to lock or unlock the inner cylinder 120, the arm 252 connected with the handle 251 is rotated, and the link is rotated by the arm 252. The plate 230 is configured to be rotated.

In order to interlock the handle 251, the arm 252, and the link plate 230, a first slot 252a is formed at one side of the arm 252, and the first slot 252a is formed. A first protrusion 234 is formed on the link plate 230 so as to be inserted into the link plate 230.

On the other hand, during cooking, the steam pressure of the inner cylinder 120 is kept constant, but after the end of cooking, the steam discharge member 260 in the cover housing 210 to discharge the steam remaining in the inner cylinder 120 It is provided.

The vapor discharge member 260 includes a first vapor discharge pipe 261 positioned in communication with the inside of the inner cylinder 120 to be exposed to the outside of the cover lid 212.

A pressure weight 262 is installed at an upper end of the first steam discharge pipe 261. The pressure weight 262 blocks the first steam discharge pipe 261 during cooking to maintain a constant steam pressure of the inner cylinder 120. After the cooking is finished, the inner cylinder 120 is configured to be flipped for steam discharge.

A release lever 263 is elastically installed on the cover lid 212 by a spring 263a so as to retract the pressure weight 262.

In addition, the top surface of the lead ring 211 is provided with a seesaw plate 264 which is operated by the lifting movement of the handle 251 and performs the seesaw movement around the hinge 265.

The seesaw plate 264 is located between the handle 251 and the release lever 263, one of which is in contact with the lower end of the handle 251 and the other is in contact with the release lever 263.

A second steam discharge pipe 271 is provided at a position adjacent to the first steam discharge pipe 261 to discharge steam inside the inner cylinder 120 by the solenoid 272.

The solenoid 272 is operated according to the steam pressure and the cooking time of the inner cylinder 120 about 3 minutes immediately before the end of cooking, and discharges the steam of the inner cylinder 120 through the second steam discharge pipe 271. Do it.

Upper ends of the first steam discharge pipe 261 and the second steam discharge pipe 271 are exposed to the steam cover mounting groove 212a formed in the cover lid 212, and the steam cover mounting groove 212a is provided with a steam cover. 280 is mounted.

Here, the upper ends of the first steam discharge pipe 261 and the second steam discharge pipe 271 and the pressure weight 262 when exposed to the outside of the cover lid 212, as well as damage the aesthetics, the first steam discharge pipe The high temperature and high pressure steam discharged through the 261 and the second steam discharge pipe 271 may be directly injected to the user, which may cause a user to burn.

In the present invention, the steam cover 280 is mounted on the steam cover mounting groove 212a to prevent burns and effectively reduce noise generated when steam is discharged.

Looking at the structure of the steam cover 280, the steam cover 280 is composed of a lower cover 281 and the upper cover 285 coupled to (fit) to the lower cover 281.

The bottom surface of the lower cover 281 is provided with a liquid generated when steam is discharged, more precisely a flow path (not shown) through which rice flows.

Flowing rice flows into the main body 1110 along a rice discharge hole (not shown) formed in the bottom surface of the steam cover mounting groove 212a, and then collects in a collecting container (not shown).

The lower cover 281 is provided with a mounting portion 282 for mounting the steam cover 280, the mounting portion 282 is provided with a mounting packing 283 (see Fig. 1).

The upper cover 285 is almost closed at its upper surface, and a steam discharge hole 286 is formed in a portion thereof.

On the other hand, when opening and closing the lid 200 (opening or closing), the outside air may be introduced into the lid 200, the rice may be dried or discolored by the incoming air, the rice taste may be reduced.

In order to prevent this, in an insulated mode, an air discharge hole 295 is formed at a position in communication with the inner cylinder 120 so that the air in the inner cylinder 120 can be sucked to the outside and forced to be discharged. An air intake pump 296 is connected to 295.

In general, a pressure packing 297 is inserted into an outer lower surface of the heat sink 220, and a main blade 298 is formed on an inner circumferential surface of the pressure packing 297.

In the present invention, at least one sub blade 299 is formed on the outer circumferential surface of the pressure packing 297 to prevent air from entering the inner cylinder 120 to correspond to the air intake pump 296.

In addition, a step 299a is formed in the sub blade 295 to increase the watertightness of the inner cylinder 120.

On the other hand, the present invention, in addition to the above-described second steam discharge pipe 271 and the solenoid 272, the lid 200 itself or the inner cylinder 120 is not opened arbitrarily, it is provided with a technique for preventing a safety accident, This is described as follows.

First, as shown in FIGS. 15 and 16, the operation of the electric pressure thermostat rice cooker is controlled by the magnet 237 and the sensor 238 installed in the main body 110 and the lid 200 and their operation. It consists of a control unit (not shown). Here, the control unit is installed in the main body 110 refers to a microcomputer to electronically control the operation of the electric pressure thermal cooker.

When the lid 200 is completely closed on the main body 110, and the sensor 238 detects the magnet 237, the control unit supplies power to the main body 110, while the main body 110 is connected to the main body 110. When the sensor 238 does not detect the magnet 237 because the lid 200 is not completely closed, the controller does not supply power to the main body 110.

Therefore, in the state in which the lid 200 is not completely closed on the main body 110, the cooking mode or the warming mode is not performed.

Secondly, as shown in FIGS. 15 and 16, a technique related to the connection structure between the handle assembly 251 and the open / close push button 113 is disclosed.

That is, the opening and closing push button 113 for opening and closing the entire lid 200 on one side of the main body 110 is configured to be pressed up and down on one side of the main body 110.

A locking protrusion 114 is formed on the main body 110 side, and a rotating member 115 is rotatably installed around the hinge portion 115a in the cover housing 210.

The head 115b of the rotating member 115 is caught by the locking protrusion 114 and the end 115c of the rotating member 115 is elastically contacted with the opening / closing push button 113 by a spring 115d. It is.

When the handle 251 of the handle assembly 250 is in a non-rotating position, that is, when the inner cylinder 120 is locked, the handle 251 not only covers the open / close pushbutton 113. The stopper portion 252e of the arm 252 blocks the pivot member 115.

For this reason, the opening and closing pushbutton 113 is pressed by the mischief of the child or the carelessness of the user, and at this time, the lid 200 is arbitrarily prevented from being incorrectly opened (see FIG. 15).

On the other hand, when the handle 251 of the handle assembly 250 is not rotated to the home position, when the inner cylinder 120 is unlocked, the handle 251 covers the open / close pushbutton 113. In addition, the opening and closing push button 113 may be pressed because the stopper portion 252e of the arm 252 does not block the pivot member 115 (see FIG. 16).

Lastly, as shown in FIG. 1, before the minute vapor pressure is removed from the inner cylinder 120, the heat sink may be prevented from being released by the rotation of the handle 251. A safety valve assembly 290 is provided at 220.

The safety valve assembly 290 is placed on the upper surface of the rubber member 291 and the rubber member 292 is elevated by the vapor pressure in the inner cylinder 120 and is elevated together with the rubber member 291 It consists of an insertion pin 292 and the compression spring 293 provided in the insertion pin 292.

The handle rotation preventing groove 252b is formed at the other side of the arm 252, and the insertion pin 292 is selectively inserted into the handle rotation preventing groove 252b.

In other words, when the minute residual vapor pressure remains approximately 0.04 Torr or more above the atmospheric pressure, the insertion pin 292 overcomes the elastic force of the compression spring 293 to raise the handle. Arm 252 cannot rotate because it is fitted in anti-rotation groove 252b.

On the other hand, when the minute residual vapor pressure remains approximately 0.04 Torr less than the atmospheric pressure inside the inner cylinder 120, the insertion pin 292 is lowered by the elastic restoring force of the compression spring 293, the handle Arm 252 is rotatable because it is disengaged from anti-rotation groove 252b.

Meanwhile, referring to FIG. 7, a sensing protrusion 235 is formed on an upper surface of the link plate 230, and a locking sensing switch 236 is formed on an upper surface of the lead ring 211 to be operated by the sensing protrusion 235. Is installed.

By the sensing protrusion 235 selectively contacting the locking detection switch 236 and the locking detection switch 236, the controller may determine the locking and unlocking state of the inner cylinder 120.

In other words, the handle 251 is in the correct position, the cam guide protrusion 243 of the link 240 is located in the first horizontal portion 232a of the cam guide slot 232, and the sensing protrusion 235 is In the state of being in contact with the locking detection switch 236, the link 240 is locking the inner cylinder 120 (see Fig. 8).

On the other hand, the handle 251 is not in the correct position, the cam guide protrusion 243 of the link 240 is located in the second horizontal portion 232c of the cam guide slot 232, the sensing protrusion 235 is In a state where the locking detection switch 236 is not in contact, the link 240 unlocks the inner cylinder 120 (see FIG. 10).

Referring to the operation of the electric pressure thermal cooker according to an embodiment of the present invention.

In order to cook, first, the cooking water is contained in the inner cylinder 120, the inner cylinder 120 is inserted into the main body 110, and then the lid 200 is closed.

As soon as the lid 200 is closed, the head 115b of the rotation member 115 is elastically caught by the locking protrusion 114 by the spring 201 so that the lid 200 is locked.

At this time, since the magnet 237 installed on the lid 200 is close to the sensor 238 installed on the main body 110, the sensor 238 detects the magnet 237, and the controller 200 completely controls the lid 200. It is determined that it is closed, and allows power to be applied to the inside of the main body 110.

At this time, the heat sink 220 of the lid 200 covers the inner cylinder 120, the pressure packing 297 is in close contact with the upper end of the inner cylinder 200 to completely seal the inner cylinder 200.

Here, the sub blade 299 and the step 299a is in close contact with the upper end of the inner cylinder 120, as shown in Figure 19 effectively blocks the air outside the inner cylinder 120 into the inner cylinder 120 .

In this state, the handle 251 of the handle assembly 250 is turned so that the handle 251 is in the correct position. At the moment of turning the handle 251, the arm 252 coupled to the lower portion of the handle 251 is also rotated in conjunction.

When the arm 252 rotates, the link plate 230 rotates because the first protrusion 234 is inserted into the first slot 252a.

When the link plate 230 rotates, the cam guide protrusion 243 is inserted into the cam guide slot 232, so that the link 240 moves linearly by the guide rail 223, and thus the guide inner cylinder 120. Lock). At the same time as the inner cylinder 120 is locked, the inner cylinder is sealed by the pressure packing 297.

As such, when the sealing of the inner cylinder 120 is completed, the control unit receives a predetermined signal (Signal) from a detection unit (not shown), etc. to operate the heating means such as IH to heat the inner cylinder 120 for a predetermined time to prepare the cooking water. Catering

After a certain period of time, and before cooking is finished and cooking is complete, the controller operates the solenoid 272 to discharge steam inside the inner cylinder 120 to the outside of the lid 200 and to press the inside of the inner cylinder 120 at a reference pressure. Drop it below.

After the steam in the inner cylinder 120 is discharged, the user presses the handle 251 downward to discharge the pressure remaining in the inner cylinder 120.

At this time, when the handle 251 is elastically pressed downward by the compression spring 243, the seesaw plate 264 in contact with the lower end of the handle 251 is rotated about the hinge 265.

At this time, the release lever 263 is elastically raised by the rotation of the seesaw plate 264, and the pressure weight 262 is flipped (released) by the release of the release lever 263.

When the pressure weight 262 is flipped, steam inside the inner cylinder 120 is discharged through the first steam discharge pipe 261. Here, the pressure weight 262 blocks the first steam discharge pipe 261 during cooking to maintain a constant internal steam pressure of the inner cylinder 120, and serves to discharge steam after the cooking is finished.

When the inner cylinder 120 is to be taken out of the main body 110 after the cooking is finished, the handle 251 of the hand assembly 250 is turned to the original home position. At this time, the arm 252 connected to the lower part of the handle 251 is also rotated together.

When the arm 252 rotates, the link plate 230 rotates because the first protrusion 234 is inserted into the first slot 252a.

When the link plate 230 is rotated, the cam guide protrusion 243 is inserted into the cam guide slot 232, so that the link 240 is linearly reciprocated by the guide rail 223, and thus the guide inner cylinder ( Unlock 120).

In this state, when the opening and closing push button 113 is pressed, the head 115b is released from the locking protrusion 114 while the rotating member 115 rotates elastically about the hinge portion 115a, and the user returns the spring. The lid 200 may be opened by using the elastic restoring force of the 201.

On the other hand, after the end of cooking, in order to open the lid 200 to discharge the steam inside the inner cylinder 120 to maintain the steam pressure inside the inner cylinder 120 or less than the reference pressure can be opened as well as safety Accidents can be prevented in advance.

In the present invention, when the handle 251 is in the correct position, that is, the inner cylinder 120 is locked, the handle 251 not only covers the opening / closing push button 113 but also the stopper portion 252e of the arm 252. Since the rotation lever 115 is blocked, the rotation member 115 itself does not move, and thus the lid 200 itself cannot be opened until the steam remaining in the inner cylinder 120 is discharged.

In addition, when fine steam pressure remains in the inner cylinder 120, the insertion pin 292 rises over the elastic force of the compression spring 293 by the minute steam pressure, and the handle rotation preventing groove 242b. Since it is fitted in, the lid 200 will be opened only when the steam pressure inside the inner cylinder 120 falls below a predetermined pressure after the end of cooking to ensure safety.

As described above, in the present invention, by pressing the handle 251 downward to open the lid 200 after the cooking is finished, the pressure weight 262 is bent to discharge steam inside the inner cylinder 120, and the handle 251. Since the section for unlocking the inner cylinder 120 by turning) is clearly divided, since the inner cylinder 120 is unlocked after the steam inside the inner cylinder 120 is discharged, the safety accident can be effectively prevented.

In addition, since the high temperature and high pressure steam discharged through the first steam discharge pipe 261 and the second steam discharge pipe 271 after the cooking is discharged indirectly through the steam cover 280, it may be directly injected to the user. Prevents burns and injection noises in advance.

Since the vapor liquid collected in the lower cover 281 of the steam cover 280 flows along the flow path and collects in an existing collection container (not shown), the main body 110 and the lid 200 may be kept clean at all times.

On the other hand, during the warming mode, when opening and closing the lid 200, the outside air flows into the inner cylinder 120 to dry and discolor the rice to reduce the taste of the bar, the lid 200 in the warming mode When opening and closing, the air suction pump 296 operates to discharge the air of the inner cylinder 120 to the outside through the air discharge hole 295.

At this time, the sub blade 299 of the pressure packing 283 is in close contact with the upper end of the inner cylinder 120 serves to prevent the air from flowing into the inner cylinder 120.

Embodiments described above may be modified in other forms, for example, the safety valve assembly may be modified in a multi-stage structure.

As described above, according to the present invention, the inner cylinder is firmly locked by the coupling structure of the link plate and the link, and the inner cylinder is unlocked after the steam remaining in the inner cylinder is discharged after the completion of cooking by the safety valve assembly. Since the lid can be easily opened and closed, it is possible to effectively prevent the safety accident caused by the high temperature and high pressure steam pressure remaining in the inner cylinder.

In addition, since the high temperature and high pressure steam discharged through the steam discharge pipe is indirectly discharged through the steam cover, it is possible to effectively prevent a burn due to the high temperature and high pressure steam discharge remaining in the inner cylinder in advance.

In addition, it is possible to effectively prevent the drying, discoloration and deterioration of the rice taste by discharging the air flowing into the inner cylinder when the lid is opened and closed during the warm mode.

In addition, by improving the blade structure of the pressure packing provided in the lower portion of the heat sink to a double blade structure, the inner cylinder can be completely sealed to improve cooking and warming functions.

Claims (26)

A cover housing installed in the main body so as to be opened and closed; A heat dissipation plate coupled to the cover housing to open and close the inner cylinder accommodated in the main body; A link plate rotatably installed on an upper portion of the heat sink; A link for selectively locking the inner cylinder by rotation of the link plate; A steam discharge member installed in the cover housing to discharge steam remaining in the inner cylinder; And A handle assembly rotatably coupled to the cover housing to selectively rotate the link plate, the handle assembly being resiliently mounted to the cover housing to operate the vapor discharge member, The handle assembly includes a handle rotatably installed in the cover housing; An arm connected to the link plate and rotating the link plate while being rotated by the handle; And Lid of the electric pressure thermal cooker, characterized in that it comprises a compression spring interposed between the handle and the arm. The method of claim 1, The link is located between the heat sink and the link plate, a hook portion is formed on one side thereof, a restriction slot is formed on the other side, and a cam guide protrusion is formed in the middle so as to selectively lock the inner cylinder while linearly reciprocating. Lid of the electric pressure thermal cooker, characterized in that the restriction projection is formed on the upper surface of the heat sink to be inserted into the restriction slot and the cam guide slot is formed in the link plate so that the cam guide projection is inserted. The method of claim 2, The cam guide slot is a lid of the electric pressure thermal cooker, characterized in that it comprises a first horizontal portion / second horizontal portion formed on both sides, and the inclined portion connecting the first horizontal portion and the second horizontal portion. The method according to claim 1 or 2, A lid of the electric pressure thermal cooker, characterized in that the upper surface of the heat sink is formed with a guide rail for guiding the linear reciprocating motion of the link. The method according to any one of claims 1 to 3, A plurality of rotary guide slots are formed on the link plate to rotate the link plate, and a plurality of rotary guide protrusions are formed on an upper surface of the heat sink to be fitted into the rotary guide slot. . The method of claim 1, The cover housing is a lid of the electric pressure thermal cooker, characterized in that consisting of a lead ring covering the upper portion of the link plate, and a cover lead located on the upper portion of the lead ring. The method of claim 6, The vapor discharge member A first vapor discharge pipe positioned in communication with the inside of the inner cylinder to be exposed to the outside of the cover lid; A pressure weight installed at an upper end of the first steam discharge pipe to maintain a constant internal steam pressure of the inner cylinder; A release lever elastically installed on the cover lid to release the pressure weight; And And a seesaw plate having one side in contact with the handle assembly and the other side in contact with the release lever so as to selectively operate the release lever by the lifting movement of the handle assembly. The method of claim 7, wherein A second steam discharge pipe for removing the steam pressure of the inner cylinder by a solenoid is installed at a position adjacent to the first steam discharge pipe, the upper end of the first steam discharge pipe and the second steam discharge pipe is formed on the cover lid Exposure to the mounting groove, the cover of the electric pressure thermal cooker, characterized in that the steam cover is mounted on the steam cover mounting groove. The method of claim 8, The steam cover has a lower cover having a flow path through which vapor liquid flows on its bottom surface, and is coupled to the lower cover to prevent burns from steam discharged through the first steam discharge pipe and the second steam discharge pipe, and to prevent steam discharge noise. Lid of the electric pressure thermal cooker, characterized in that consisting of an upper cover to prevent. The method of claim 9, The lower cover of the electric pressure thermal cooker, characterized in that the mounting portion for mounting the steam cover is formed. The method of claim 10, The mounting portion cap of the electric pressure thermal cooker, characterized in that the mounting packing is installed. delete The method of claim 1, The handle is guided by a guide piece formed in the cover housing, the lower end of the handle is a lid of the electric pressure thermal cooker, characterized in that the engaging hook is formed on the lower end of the guide piece is formed. The method of claim 11, A first slot is formed at one side of the arm so that the link plate can be rotated by the rotation of the arm, and the link plate is formed with a first protrusion to be inserted into the first slot. Lid of cooker. The method of claim 14, A latching protrusion is formed at one side of the main body, the opening / closing push button is elastically lifted and lifted by a spring on the cover housing, and a rotating member is installed inside the cover housing to be rotatable about a hinge part. The head of the rotating member is caught by the locking projection and the end of the rotating member is in contact with the opening and closing push button lid of the electric pressure thermal cooker. The method of claim 15, And when the handle of the handle assembly is in a non-rotating position, the arm prevents the opening / closing push button to prevent the lid from being opened by a malfunction. The method of claim 16, A lid of the electric pressure thermal cooker, characterized in that the stopper is formed on the arm. The method of claim 1, Before the steam remaining in the inner cylinder is discharged, the lid of the electric pressure thermostat rice cooker further comprises a safety valve assembly to prevent the inner cylinder from unlocking by the rotation of the handle. The method of claim 18, The safety valve assembly A rubber member which is lifted by the vapor pressure of the inner cylinder; An insertion pin placed on an upper surface of the rubber member and lifted together with the rubber member; And Lid of the electric pressure thermal cooker including a compression spring is installed on the insertion pin. The method of claim 19, The handle rotation preventing groove is formed on the other side of the arm, the handle rotation preventing groove, the lid of the electric pressure thermal cooker, characterized in that the insertion pin is selectively inserted. The method of claim 1, The link is a lid of the electric pressure thermal cooker, characterized in that the linear reciprocating motion in a radial direction about the center of the heat sink. The method of claim 1, Sensing protrusion is formed on the upper surface of the link plate, the lid of the electric pressure thermal cooker, characterized in that the locking sensing switch is installed on the upper surface of the lead ring to be operated by the sensing protrusion. The method of claim 1, In the heat insulating mode, the air discharge hole is formed in a position communicating with the inner cylinder so as to force the discharge of the air in the inner cylinder to the outside, the air discharge hole is characterized in that the air suction pump is connected Lid of cooker. The method of claim 23, wherein A pressure packing is installed on an outer bottom surface of the heat sink, and at least one sub blade is formed on an outer circumferential surface of the pressure packing to prevent air intake into the inner cylinder. The method of claim 24, The sub blade lid of the electric pressure thermal cooker, characterized in that the step is formed. main body; An inner cylinder containing cooking water therein and being accommodated in the main body and being heated; And Including a lid installed to open and close the body, The lid is a cover housing; A heat sink coupled to the cover housing; A link plate rotatably installed on an upper portion of the heat sink; A link for selectively locking the inner cylinder by rotation of the link plate; A steam discharge member installed in the cover housing to discharge steam remaining in the inner cylinder; And A handle assembly rotatably coupled to the cover housing to rotate the link plate, the handle assembly being resiliently mounted to the cover housing to operate the vapor discharge member, A plurality of rotary guide slots are formed in the link plate for rotation of the link plate, and a plurality of rotary guide protrusions are formed on an upper surface of the heat sink to be fitted in the rotary guide slot.

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