KR100187480B1 - Pressure discharge instrument for electric pressure rice cooker - Google Patents

Abstract

The present invention relates to a steam discharge device for an electric pressure cooker, and in detail, pressing the pushbutton of the handle to open the lid of the electric pressure cooker after the heating process, the pressing piece of the pushbutton contacts the sensing switch mounted on the top of the cap. By opening the solenoid valve, the residual steam generated by the latent heat of the inside is discharged to the outside of the electric pressure cooker to increase the convenience of the handle operation and to prevent the safety accident when the lid is opened at the high internal pressure. Regarding the steam discharge device of the electric pressure cooker, the main configuration of the present invention is a top ring 77 formed with a pushbutton insertion hole (77a) in the center, a pushbutton insertion hole (71a) is formed in the center and the hub ( A stopper 79 having a handle 71 formed with a handle 71b, an inclined protrusion guide groove 77b of the top ring 77 and a through hole 79b formed at the center thereof, and a pushbutton insertion of the handle 71. In the electric pressure cooker provided with a push button (73) inserted into the (71a) and the pressing piece (73c) at the bottom, and the cap (75) elastically installed with the push button (73) by the expansion spring (81) The sensing switch 87 is mounted on one side of the upper end of the cap 75 and detects a switching state of the push button 73 with the pressing piece 73c, and the signal value of the sensing switch 87 is determined. The microcomputer 89 and the solenoid valve 8 for discharging the steam under the control of the microcomputer 89 is provided.

Description

Steam discharge device of electric pressure cooker

The present invention relates to a steam discharge device for an electric pressure cooker, and in detail, pressing the pushbutton of the handle to open the lid of the electric pressure cooker after the heating process, the pressing piece of the pushbutton contacts the sensing switch mounted on the top of the cap. By opening the solenoid valve, the residual steam generated by the latent heat of the inside is discharged to the outside of the electric pressure cooker to increase the convenience of the handle operation and to prevent the safety accident when the lid is opened at the high internal pressure. The present invention relates to a steam discharge device for an electric pressure cooker.

The main configuration of the conventional electric pressure cooker is, as shown in Figures 1 and 2, the heater is buried to heat the bottom of the heating cooker 101 and a predetermined space portion is formed to be opened to the top to hold the rice inside, The heating plate 102, the heat insulation heater 103 installed at the upper side of the heating cooker 101 to maintain the warmth inside the heating cooker 101, and the upper opening of the heating cooker 101 It consists largely of the heating cooker cover 106 which seals, the body case 104 which wrapped these outer shells, and the lid 105 which opens and closes the upper part of this body case 104.

The lid 105 is provided with a pressure weight 107 for internally or forcibly discharging the internal vapor pressure to the outside when the internal steam pressure of the heated heating cooker 101 reaches a predetermined value, that is, cooking is completed and changed to warmth. have. In addition, when the pressure weight 107 is not blocked, the solenoid valve 108 is provided to discharge the steam pressure to the outside by electrically controlling the internal steam pressure of the set cooking pot.

Looking at the lid and the connection state of the electric pressure cooker, the handle 171 is located on the top of the lid 105 of the electric pressure cooker, the center gear 151 is laid down to the lower side of the handle 171. Three planetary gears 153 are engaged with the outer circumferential surface of the center gear 151, and the planetary gears 153 are again mounted inside the internal gear 155.

The internal gear 155 and the rotation lock plate 113 are integrally fastened by screws, and a plurality of locking protrusions 113a are formed at the lower end of the rotation lock plate 113. And the upper portion of the rotary locking plate 113, the cam portion 157 is formed protruding and the lower side of the heating cooker cover 106 covering the opening of the heating cooker 101 is located.

The locking knob 115 has a contact protrusion 115a formed in contact with the cam portion 157 of the rotary lock plate 113 at one side thereof, and a lock protrusion 115b formed at the other side thereof. The locking knob 115 is elastically installed by one side of the lid 105 and the tension spring 119.

The body case 104 of the electric pressure cooker has an inner space in which the upper side is opened and the heating cooker 101 can be seated, and the hot plate 102 is mounted to the lower side where the heating cooker 101 is seated and the outer pot ( The heat insulating heater 103 is attached to the upper side of the 109.

A locking protrusion 130a coupled to the locking protrusion 113a of the lid 105 rotating lock plate 113 is formed at an upper end portion of the heating cooker 101. Hanging jaw 117 formed on one side of the upper end of the body case 104 has a hinge hole (117a) is formed at both ends and the stop jaw (117b) is formed in the lower center.

Looking at the operation state of the electric pressure cooker configured as described above, first, when closing the lid to rotate the handle 171 located in the upper center to rotate the central gear 151 is arranged. When the three planetary gears 153 located on the outer circumferential surface of the central gear 151 rotate, the internal gear 155 engaged with the planetary gear 153 is moved. By the rotation of the internal gear 155, the locking protrusion 113a of the rotary locking plate 113 integrally formed by the screw is engaged with the locking protrusion 130a of the heating cooker 101 to be locked.

At the same time, while the cam 157 located on the upper side of the rotation locking plate 113 rotates, the lid locking device is locked by pushing the locking knob 115 toward the hanger 117 of the body case 104. That is, while the cam unit 157 pushes the contact protrusion 115a of the locking knob 115, the locking protrusion 115b of the locking knob 115 is inserted into the hanger 117 of the body case 104 to be locked. .

When opening the lid, the handle 171 is rotated in the opposite direction to release the locking protrusion 113a of the rotary locking plate 113 engaged with each other and the locking protrusion 130a of the heating cooker 101, and at the same time, the body case ( The locking protrusion 115b of the locking knob 115 inserted into the hanger 117 of the 104 is returned to the lid 105 by the tension spring 119 to be separated from the hanger 117.

When the internal air rises to a certain pressure during the working process of the electric pressure cooker, the microcomputer (not shown) detects this to open the solenoid valve 108 to discharge the internal vapor pressure to the outside.

However, since the pressure inside the heating cooker is increased by the latent heat of the electric pressure cooker when the lid is opened after all the heating processes, the handle is not easily rotated and opened. Opening the lid at high temperatures creates a safety hazard.

The present invention for solving the problems as described above is to open the solenoid valve by pressing the push button of the handle in contact with the sensing switch mounted on the top of the cap to open the lid of the electric pressure cooker after the heating process By discharging the residual steam generated by the latent heat of the electric pressure cooker to the outside, the handle is easy to operate, and the purpose of preventing safety accidents that can be caused by opening the lid under high internal pressure. .

The present invention for achieving the above object is a top ring formed with a pushbutton insertion hole in the center, a pushbutton insertion hole is formed in the center and a hub formed at the bottom, mounted on the inclined protrusion guide groove of the top ring and the through groove in the center An electric pressure cooker having a stopper formed, a pushbutton inserted into a pushbutton insertion hole of a handle and having a push piece formed at a lower end thereof, and a cap installed elastically with a pushbutton by an expansion spring, and mounted on one side of the top of the cap. Steam in an electric pressure cooker equipped with a sensing switch for sensing the switching state of the pushbutton with a push button, a microcomputer for receiving the signal value of the sensing switch, and a solenoid valve for discharging the steam under the control of the microcomputer. To provide a discharge device.

1 is a schematic perspective view showing the main configuration of a conventional electric pressure cooker,

Figure 2 is a side cross-sectional view showing the internal configuration of a conventional electric pressure cooker,

Figure 3 is a schematic perspective view showing the main configuration of the electric pressure cooker according to the present invention,

Figure 4 is a side cross-sectional view showing the main part of the steam discharge device of the present invention,

5 is an exploded perspective view showing the main configuration of the present invention.

Explanation of symbols on the main parts of the drawings

1: heating cooker 2: hot plate

3: insulation heater 4: body case

5: lid 6: heat cooker cover

7: pressure weight 8: solenoid valve

13: rotary lock plate 15: locking knob

17: hanger 18: outer pot

19: tension spring 51: center gear

53: planetary gear 55: internal gear

57: cam portion 71: handle

73: pushbutton 75: cap

77: top ring 79: stopper

81: expansion spring 87: detection switch

89: micom

Hereinafter, the configuration according to an embodiment of the present invention in detail.

First, the main configuration of the electric pressure cooker, as shown in Figures 3 and 4, the heating cooker (1) formed with a locking projection (30a) at the top end, and the heating plate (2) embedded with a heater to heat the bottom thereof And a warming heater (3) installed at the upper side of the outer pot (18) for heating to maintain the warmth of the inside of the cooking pot (1), and a heating cooker cover (6) for sealing an upper opening of the heating cooker (1). ), A body case 4 wrapped around their outer shell, and a lid 5 for opening and closing the upper portion of the body case 4.

In the lid of the electric pressure cooker and its main configuration, the central gear 51 is mounted in the axial direction of the handle 71 located above the lid 5 and the planetary gear 53 is mounted on the outer circumferential surface of the central gear 51. And an internal gear 55, which are integrally formed by the internal gear 55 and a screw, and having a cam portion 57 formed on one side of the upper end, and a rotation locking plate 3 on one side. The contact protrusion 5a is formed in contact with the cam portion 57 of the) and the locking knob 5 formed on the other side of the locking projection 5b, and the hooking jaw 7 is installed on one side of the upper end of the body case (4). have.

As shown in FIG. 5, the steam discharge device of the electric pressure cooker of the present invention has a top ring 77 having a pushbutton insertion hole 77a formed at the center, and a pushbutton insertion hole 71a formed at the center thereof, and having a hub at the bottom thereof. A stopper (79) having a handle (71b) formed thereon, a stopper (79) having a through groove (79b) formed in the center thereof, and mounted to the inclined protrusion guide groove (77b) of the top ring (77), and a push button of the handle (71). An electric pressure provided with a push button 73 inserted into the insertion hole 71a and having a pressing piece 73c formed at the bottom thereof, and a cap 75 elastically installed with the push button 73 by the expansion spring 81. In the rice cooker, a sensing switch 87 mounted on one side of the upper end of the cap 75 and detecting a switching state with the pressing piece 73c of the push button 73, and a signal value of the sensing switch 87. And a solenoid valve 8 for discharging steam by the control of the microcomputer 89.

In more detail, the handle 71 located in the upper center of the lid 5 has a hub 71b protruding from the lower end and a hub 51a protruding from the upper end of the central gear 51 by screws. The hub 71b of the handle 71 is configured to rotate by a predetermined angle in the hub shaft guide hole 77c of the top ring 77.

The stopper 79 is installed in the inclined protrusion guide groove 77b formed at the lower end of the top ring 77, and the return protrusion 79c of the stopper 79 allows the stopper 79 to return to its original position after a certain angle of rotation. It is elastically provided with the return spring 85 fitted in the return groove 77d of the top ring 77.

One side of the pushbutton 73 is inserted into the pushbutton insertion hole 71a of the handle 71 and rotated together with the handle 71 by the fixing surface 73b. A pressing piece 73c is formed on the lower side of the push button 73, and an expansion spring 81 is inserted into the lower inner circumferential surface to be elastically installed with the guide portion 75b of the cap 75.

The upper side of the cap 75 is equipped with a detection switch 87 for detecting the position of the push button 73, the detection switch 87 is connected to the microcomputer 89 to send a switching value.

The working state of the present invention configured as described above is as follows. First, when the lid is opened after the heating process of the electric pressure cooker, the push button 73 in the center of the handle 71 is pressed, and then the handle 71 is rotated by a predetermined angle.

At this time, the pressing piece 73c of the push button 73 comes into contact with the sensing switch 87 mounted on one side of the upper end of the cap 75. When the sensing switch 87 is turned on, the switching value is sent to the microcomputer 89. In the microcomputer 89, the solenoid valve 8 is opened to send the internal steam pressure generated by the latent heat of the electric pressure cooker to the outside. Done.

On the contrary, when the lid is closed, when the handle 71 is rotated at a predetermined angle clockwise, the locking protrusion 73a of the push button 73 pushes the inclined protrusion 79b of the stopper 79 to incline the top ring 77. It is inserted into the projection guide groove (77b). That is, the locking protrusion 73a of the push button 73 is inserted into the inclined protrusion guide groove 77b of the top ring 77 by the expansion force of the expansion spring 81 while pushing the inclined protrusion 79a of the stopper 79. The contact between the pressing piece 73c of the push button 73 and the sensing switch 87 is fixed.

When the sensing switch 87 is turned off, the switching value is input from the microcomputer 89 to close the solenoid valve 8.

Therefore, the present invention is the handle of the lid by the internal pressure of the electric pressure cooker by pressing the push button before opening the lid to open the inner pressure generated by the latent heat of the electric pressure cooker to discharge the residual steam to the outside through the solenoid valve This prevents rotation and prevents the risk of opening the lid at high internal pressures.

As described above, the present invention by pressing the push button of the handle to open the lid of the electric pressure cooker after the heating process, the pressing side of the push button is in contact with the detection switch mounted on the top of the cap to open the solenoid valve inside By discharging the residual steam generated by the latent heat to the outside of the electric pressure cooker to increase the convenience of the handle operation and has the effect of preventing the safety accident when the lid is opened in the state of high internal pressure.

The present invention is not limited to the above embodiments and can be variously modified and implemented by those skilled in the art without departing from the technical gist of the present invention.

Claims (2)

A top ring 77 having a pushbutton insertion hole 77a formed in the center, a handle 71 having a pushbutton insertion hole 71a formed in the center and a hub 71b formed at the bottom thereof, and an inclination of the top ring 77. A stopper 79 mounted to the projection guide groove 77b and having a through groove 79b formed at the center thereof, and a push piece 73c formed at the bottom of the stopper 79 inserted into the push button insertion hole 71a of the handle 71. In the electric pressure cooker equipped with a button 73 and the cap 75 elastically installed with the push button 73 by the expansion spring 81, the push button is mounted on one side of the upper end of the cap 75 A sensing switch 87 for sensing a switching state with the pressing piece 73c of 73, a microcomputer 89 for receiving and determining a signal value of the sensing switch 87, and control of the microcomputer 89; Steam discharge device for an electric pressure cooker, characterized in that the solenoid valve (8) for discharging the steam by. According to claim 1, wherein the microcomputer (89) when the push button (73) moves downward to contact the detection switch 87 to open the solenoid valve (8) to the residual steam of the electric pressure cooker to the outside When the push button (73) is moved upward and does not come in contact with the detection switch (87), the solenoid valve (8), characterized in that for closing the steam discharge device.

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