KR200352191Y1 - Automatic steam discharge device for electric pressure heat insulating rice cooker - Google Patents

Abstract

The automatic steam discharge device of the electric pressure insulation rice cooker according to the present invention is a body formed with a steam discharge hole communicating with the inside of the pressure vessel cooking and warming, and elastically fixed to the body to be located close to the steam discharge hole Diaphragm of material, one end of which is connected to the diaphragm and is installed to be linearly movable, a plunger for reciprocating linearly moving the diaphragm to open and close the vapor discharge hole, and the plunger to reciprocally straighten the diaphragm. A core installed in close proximity to the other end of the plunger and a coil installed around the plunger and the core to generate electromagnetic force by interacting with the core, and installed between the plunger and the core so as to move. A return spring for restoring the plunger moved by the electromagnetic force, and the plunger and the core yarn It is installed in the return spring even when the full compression comprises a damping member of elastic material which prevents friction between the plunger and the core.

Description

AUTOMATIC STEAM DISCHARGE DEVICE FOR ELECTRIC PRESSURE HEAT INSULATING RICE COOKER}

The present invention discharges the steam inside the pressure vessel to reduce the pressure inside the pressure vessel where cooking and insulation is performed to the outside, so that even if the user opens the outer lid, the automatic steam discharge of the electric pressure thermal cooker can promote the safety of the user. In particular, the present invention relates to an automatic steam discharge device for an electric pressure thermal cooker that can prevent friction between components during operation to prevent damage to the components as well as reduce noise generated by friction.

In general, the electric pressure thermal cooker is a cooking utensil for cooking food that is not boiled at normal pressure in a short time by increasing the pressure in the pot by heating the pot in an enclosed space by an electric heater.

As such, the electric pressure thermal rice cooker has an outer cylinder formed with a heating space upwardly opened therein, an electric heater built in the heating space of the outer cylinder to heat the heating space, and an outer cylinder lid installed to be opened and closed on an upper side of the outer cylinder. And an upwardly open tubular rice cooker accommodated in the heating space of the outer cylinder, and installed inside the outer cylinder lid so as to be rotatable integrally with the outer cylinder lid to block the opening of the rice cooker to cooperate with the rice cooker in a pressure space. It consists of an inner lid, which is heated by an electric heater while the pressure vessel is closed, and food is cooked in a state where the pressure inside the pressure vessel is high. It is not only necessary to maintain the pressure inside the pot properly by discharging it, but also when the user opens the lid. The automatic steam discharge device for discharging the vapor of the pre-cooker interior to the exterior is further provided in order to even prevent accidents due to excessive pressure.

1 is an exploded cross-sectional view showing an automatic steam discharge device of the electric pressure thermal rice cooker according to the prior art, Figures 2a and 2b is a cross-sectional view showing the operating state of the automatic steam discharge device of the electric pressure thermal rice cooker according to the prior art.

Automatic steam discharge device of the electric pressure thermal rice cooker according to the prior art is installed to be located between the lid and the outer lid, in particular, as shown in Figure 1 is installed to be fixed to the upper side of the inner lid communicating with the inside of the pressure vessel A body (2) having a vapor discharge hole (2h) is formed so that it is connected to the body (2) and the O-ring (O) as well as installed to communicate with the outer cylinder lid to pass through the steam discharge hole (2h). It consists of a tube (4) for guiding steam to the outside, and a solenoid valve (Sollenoid valve) is installed on the steam discharge hole (2h) side to open and close the steam discharge hole (2h).

Here, the solenoid valve is a diaphragm (Diaphra12) of the elastic material is installed so that the circumferential portion is fixed by a diaphragm holder (Diaphragm: 12a) to block the steam discharge hole (2h), the center of the diaphragm (12) Plunger 14 and the central portion of the diaphragm 12 to be opened and connected to the reciprocating linear movement to open and close the steam discharge hole (2h) and the plunger 14 to move linearly In order to restore the plunger 14, a core 16 and a coil 17 generating electromagnetic force to the plunger 14 and a return spring which is a kind of compression coil spring generating an elastic force of the spring to restore the plunger 14 18).

Of course, the core 16 is made of a metal material to generate an electromagnetic force by interaction when a current is supplied to the coil 17, and the plunger 14 is also made of a metal material to be reciprocated by such electromagnetic force. Is made of.

At this time, one end of the plunger 14 is installed to be connected to the central portion of the diaphragm 12, and the core 16 is fixed to the center of the bobbin 17a at a predetermined distance from the other end of the plunger 14. In addition, the coil 17 is installed to be wound around the bobbin 17a to be positioned around the plunger 14 and the core 16, and the core 16, the coil 17, and the bobbin 17a are It is installed to be fixed to the body 2 by a plate 13, the return spring 18 is installed to be elastically supported between the other end of the plunger 14 and the core 16.

Therefore, when the pressure inside the pressure vessel is less than the set pressure, since no current is supplied to the coil 17, as shown in FIG. 2A, the plunger 14 is driven by the spring elastic force of the return spring 18. Since it is supported, the central portion of the diaphragm 12 pushes the diaphragm 12 to block the vapor discharge hole 2h, thereby preventing the steam inside the pressure vessel from escaping to the outside.

On the other hand, when the pressure inside the pressure vessel is greater than or equal to the set pressure, the current is supplied to the coil 17, and as shown in FIG. 2B, the electromagnetic force is generated by the interaction between the core 16 and the coil 17. Generated by the electromagnetic force, the plunger 14 is linearly moved to compress the return spring 18 while at the same time allowing the central portion of the diaphragm 12 to open the vapor discharge hole 2h. The steam inside the container is allowed to escape to the outside through the steam discharge hole (2h) and the tube (4).

Of course, if the current is not supplied to the coil 17 again, the plunger 14 is supported by the elastic restoring force of the return spring 18 so that the central portion of the diaphragm 12 is the vapor discharge hole ( The diaphragm 12 is pushed again to prevent 2h).

However, the automatic steam discharge device of the electric pressure thermal rice cooker according to the prior art is caused by the electromagnetic force when the current flows through the coil 17 is generated by the interaction of the core 16 and the coil 17 by the electromagnetic force While the plunger 14 moves in the direction of compressing the return spring 18, the diaphragm 12 opens the vapor discharge hole 2h, but the plunger (e.g., by a sudden generated electromagnetic force) As the 14 is moved, the liter spring 18 is excessively compressed and then hits the core 16, which causes the metallic plunger 14 and the core 14 to be continuously rubbed and thus the component parts. Not only is this damaged, but there is a problem that noise is generated.

The present invention is devised to solve the problems of the prior art, an electric pressure thermal cooker that can reduce the noise as well as prevent damage to the components by preventing friction between the components when opening and closing the steam exhaust hole The purpose of the present invention is to provide an automatic steam discharge device.

1 is an exploded cross-sectional view showing an automatic steam discharge device of the electric pressure thermal rice cooker according to the prior art,

Figure 2a and Figure 2b is a cross-sectional view showing the operation state of the automatic steam discharge device of the electric pressure thermal rice cooker according to the prior art,

3 is an exploded cross-sectional view showing an automatic steam discharge device of the electric pressure insulating rice cooker according to the present invention,

4a and 4b is a cross-sectional view showing an operation state of the automatic steam discharge device of the electric pressure thermal cooker according to the present invention.

<Explanation of symbols on main parts of the drawings>

52: body 52h: steam discharge hole

54 tube 62 diaphragm

62a: diaphragm holder 63: plate

64: plunger 66: core

66h: fixing hole 67: coil

67a: bobbin 68: return spring

70 damping member 72: fixing protrusion

74: buffer part

The automatic steam discharge device of the electric pressure thermal cooker according to the present invention for solving the above problems is a body (body) formed with a steam discharge hole communicating with the inside of the pressure vessel cooking and warming, so as to be located close to the steam discharge hole An elastic diaphragm (Diaphragm) fixed to the body and one end connected to the diaphragm are installed to be linearly movable so that the diaphragm is reciprocally linearly moved to open and close the vapor discharge hole (Plunger). And a core installed in close proximity to the other end of the plunger and a coil installed near the other end of the plunger to generate the electromagnetic force by interacting with the core to move the plunger linearly. Return spri between the core and the core to restore the plunger moved by mutual electromagnetic forces ng) and an elastic damping member installed between the plunger and the core to prevent friction between the plunger and the core even when the return spring is fully compressed.

Here, the damping member is preferably installed to be fixed to the core.

At this time, the core is a fixing hole is formed in the center, the damping member is formed with a fixing projection in the center to be fitted into the fixing hole of the core and the buffer portion is formed in the form of a plate-shaped expansion around the fixing projections More preferred.

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

3 is an exploded cross-sectional view showing an automatic steam discharge device of the electric pressure thermal cooker according to the present invention, Figures 4a and 4b is a cross-sectional view showing the operating state of the automatic steam discharge device of the electric pressure thermal cooker according to the present invention.

Automatic steam discharge device of the electric pressure thermal rice cooker according to the present invention is installed to be fixed to the upper side of the inner lid as shown in Figure 3 is a body formed with a vertical steam discharge hole (52h) to communicate with the pressure vessel (Body: 52 ) Is connected by the O-ring (O) to communicate with the steam discharge hole (52h) on one side of the body (52) and is installed vertically to communicate with the outer cylinder lid to pass the steam passed through the steam discharge hole (52h). It is composed of a tube 54 for guiding to the outside and a solenoid valve installed at the steam discharge hole 52h to open and close the steam discharge hole 2h so that the components do not directly rub against each other during operation.

Here, the solenoid valve is a diaphragm made of an elastic material that is installed so that the circumferential portion is fixed by a diaphragm holder (Diaphragm: 62a) inside the body 52 so as to prevent the upper portion of the steam discharge hole 52h. And a plunger made of metal, which is connected to the diaphra 62 and the central portion of the diaphragm 62 to move reciprocally and linearly upward, so that the central portion of the diaphragm 62 opens and closes the vapor discharge hole 52h. (Plunger: 64), and a metal core (Core: 66) and coil (Coil: 67) and the plunger (64) to generate an electromagnetic force on the plunger 64 in order to move the plunger 64 linearly Return spring 68, which is a kind of compression coil spring that generates elastic force of the spring to restore), and is installed between the plunger 64 and the core 66 so that the return spring 68 is fully compressed. The damping member 70 is formed of an elastic material such as rubber to prevent friction between the plunger 64 and the core 66.

At this time, the plunger 64 is installed so that the lower end is fitted to the upper center portion of the diaphragm 62, the core 66 is a cap-shaped bobbin at the upper end with a predetermined distance from the upper end of the plunger 64. The coil 67 is fixedly installed to be wound around the bobbin 67a so as to be positioned around the plunger 64 and the core 66, and the core 66 is fixed to the center of the upper surface. And the coil 67 and the bobbin 67a are fixed to the upper side of the body 52 by the plate 63.

In addition, the plunger 64 has a support groove formed in the axial direction in the center from the top, the return spring 68 is installed to elastically support between the support groove of the plunger 64 and the core 66. The damping member 70 is fixedly installed at the lower end of the core 66 so as to be positioned between the core 66 and the return spring 66.

In particular, the core 66 has a fixing hole (66h) is formed so as to pass through the center of the lower end, the damping member 70 has a fixing protrusion 72 in the center so that it can be fitted into the fixing hole (66h) of the core In addition, the buffer portion is formed in the plate shape is formed around the fixing protrusion 72, the buffer portion 74 is preferably installed to be in close contact with the lower end of the core (66).

Accordingly, the damping member 70 is installed such that the fixing protrusion 72 is fitted into the fixing hole 66h of the core, and the shock absorbing portion 74 is moved even if the plunger 64 is excessively moved. 68) to avoid direct hit.

Looking at the operation of the present invention configured as described above are as follows.

First, when the pressure inside the pressure vessel is less than the set pressure, the current is not supplied to the coil 67, the plunger 64 is a spring elastic force of the return spring 68 as shown in Figure 4a Since it is supported by the central portion of the diaphragm 62 pushes the diaphragm 62 to block the vapor discharge hole (52h) to prevent the steam inside the pressure vessel to escape to the outside.

On the other hand, when the pressure inside the pressure vessel is greater than or equal to the set pressure, current is supplied to the coil 67, and as shown in FIG. 4B, the electromagnetic force is caused by the interaction between the core 66 and the coil 67. Generated by the electromagnetic force, the plunger 64 is moved upward and linearly to compress the return spring 68 and at the same time, the central portion of the diaphragm 62 is moved upward to open the vapor discharge hole 52h. The vapor inside the pressure vessel is discharged to the outside through the vapor discharge hole (52h) and the tube (54).

At this time, even if the electromagnetic force is rapidly generated by various factors to compress the return spring 68 while the plunger 64 is excessively moved upward, the upper end of the plunger 64 is located at the lower end of the core 68. By hitting the shock absorbing portion 74 of the damping member fixed to prevent the plunger 64 and the core 68 is directly rubbed to prevent damage to the components, as well as the plunger 64 and the core (68) Noise generated by friction can be reduced.

Of course, if the current is not supplied to the coil 67 again, the plunger 64 is moved downward while being supported again by the elastic restoring force of the return spring 68, so that the central portion of the diaphragm 62 is The diaphragm 62 is pushed again to block the vapor discharge hole 52h.

The automatic steam discharge device of the electric pressure insulating rice cooker according to the present invention configured as described above is a diaphragm installed to block the steam discharge hole while the plunger moves reciprocally linearly by mutual electromagnetic force by the core and coil and elastic force of the spring by the return spring. It is operated to open and close the fram, and since the damping member of elastic material is installed between the plunger and the core, even if the plunger is excessively moved to the core side by electromagnetic force, it prevents direct friction by the damping member, thereby preventing damage to the components. Not only that, but also to reduce the noise generated by the friction has the advantage.

Claims (3)

Body formed with a vapor discharge hole communicating with the inside of the pressure vessel for cooking and warming, Diaphragm of elastic material fixed to the body so as to be located close to the vapor discharge hole (Diaphragm), A plunger (Plunger) which is connected to one end of the diaphragm so as to be linearly movable so that the diaphragm is reciprocated linearly to open and close the vapor discharge hole; A core installed in close proximity to the other end of the plunger and a coil installed around the plunger and the core to generate electromagnetic force by interacting with the core to move the plunger linearly and reciprocally; A return spring installed between the plunger and the core to restore the plunger moved by mutual electromagnetic force; Installed between the plunger and the core, even if the return spring is fully compressed, automatic steam discharge device of the electric pressure thermostat rice cooker, characterized in that made of an elastic damping member to prevent friction between the plunger and the core. The method of claim 1, The damping member is an automatic steam discharge device of the electric pressure thermal cooker, characterized in that installed to be fixed to the core. The method of claim 2, The core is formed with a fixing hole in the center, the damping member is a fixing protrusion is formed in the center to be fitted into the fixing hole of the core, and the buffer portion is formed in the plate shape around the fixing protrusion is formed Automatic steam discharge device of electric pressure cooker.