KR19990023979U - Steam discharge device of electric pressure cooker - Google Patents

Abstract

The present invention penetrates along the central axis of the outer case (3) surrounding the outside, the solenoid coil (7) embedded in the outer case (3) and supported by the coil housing (5), and the coil housing (5). And a bushing 11 inserted into and fixed to an upper opening of the case 3 so as to guide the upper and lower movable tubes 9 and the upper and lower movable tubes 9 exposed upwards of the outer case 3 and the upper and lower movable tubes 9. The lower end of the diaphragm 13 is inserted and attached to the lower cap 17 inserted into the lower opening of the outer case 3 so that the central steam inlet 15 is opened and closed by the diaphragm 13. In the steam exhaust device 1, the cylindrical cap is attached to the upper and lower movable tube 9 and the bushing 11, respectively, to seal the gap A between the upper and lower movable tubes 9 and the bushing 11; Front having bellows pipe 21 of shape It relates to a steam discharge device of the pressure cooker, even if the high pressure steam inside the cooker through the discharge nozzle of the upper and lower movable tubes (9), the gap (A) between the upper and lower movable tubes (9) and the bushing (11) is a bellows pipe (21) It is sealed by to prevent the ingress of steam into the solenoid valve to prevent corrosion of internal components caused by the moisture of the steam.

Description

Steam discharging device of electric pressure rice cooker

The present invention relates to a steam discharge device of an electric pressure cooker, and more particularly, the steam discharged from the discharge nozzle of the vertical movable pipe is covered with a bellows pipe on the outer peripheral surface of the upper and lower movable pipes through which steam passes. The gap between the bushings guides the inside of the solenoid valve, which causes the vertical movement of the upper and lower movable pipes, to prevent the intrusion of weak components such as springs of the solenoid valves. The present invention relates to a vapor discharge device that is prevented in advance.

In general, an electric pressure cooker is heated by heating the bottom or side of the heating pot covered with a lid to cover the inside of the rice cooker with a hot plate embedded with a heater, and then operate the warming heater to a low temperature It is a device that serves both cooking and storage by heating and maintaining a predetermined temperature. When the internal steam pressure of the heated cooker reaches a predetermined value, that is, when the cooking is completed and changed to warming, the lid of the electric pressure cooker may prevent some of the steam from the outside to prevent the danger that may occur due to the internal steam pressure. A safety valve for discharging the gas is provided.

Such an electric pressure cooker, as shown in 100 in Figure 1, generally open to the top to accommodate the rice inside the heating cooker 101, a predetermined space portion is formed, heating the bottom of the heating cooker 101 Hot plate 102 in which the heater is embedded, the upper portion of the heating cooker 101 is installed in the upper portion of the heating cooker 101 to heat to maintain the inside of the heating cooker 101 in a warm state, the upper opening of the heating cooker 101 The cover 106 which seals the inside, the heat insulation case 104 surrounding the outer part of these parts, and the lid 105 which opens and closes the upper part of this heat insulation case 104 are comprised.

Here, the lid 105 is a safety valve for natural or forced discharge of the internal steam pressure to the outside when the internal steam pressure of the heated heating cooker 101 reaches a predetermined value, that is, when the cooking is completed to change to warmth ( 107).

The safety valve 107 is in communication with the cover 106 of the heating cooker 101 and is installed to enable the opening and closing on the steam discharge pipe 107a protruding to the upper portion of the lid 105 and the upper end of the steam discharge pipe 107a. When the internal steam pressure of the heating cooker 101 reaches a predetermined value, the weight of the steam cooker 107b opens the steam discharge pipe 107a by the steam pressure. In addition, when the steam discharge pipe 107a of the safety valve 107 is not blocked or operated, the steam discharge device 110 to discharge the steam pressure to the outside by operating the solenoid valve electrically in accordance with the set internal steam pressure of the heating cooker. Is provided.

Here, the steam discharge device 110 of the electric pressure cooker will be described briefly with reference to FIG. 2.

As shown in FIG. 2, the conventional steam discharging device 110 is mounted between the lid 105 of the electric pressure cooker shown in FIG. 1 and the cover 106 of the heating cooker, and is attached to the outer case 111. Is surrounded by. The lower cap 117 is inserted into the opening formed in the lower surface of the case 111, and the bushing 121 having a through hole formed in the center thereof is inserted into the opening formed in the upper surface. In addition, a steam outlet cap 112 is attached to the upper portion of the case 111 to prevent the steam discharged from the inside of the heating cooker 101 to be directly injected.

Inside the case 111, a diaphragm 123 for opening and closing a coil assembly including a support frame 113 and a coil 115, a suction port 119 formed through the center of the lower cap 117, and the diaphragm ( The upper and lower movable tubes 125 are inserted into and attached to the center of the upper and lower movable tubes 125 and protrude horizontally under the upper and lower movable tubes 125. The solenoid valve 120 which consists of the return spring 129 mounted between the and the support frame 113 is comprised.

The steam discharge device 110 is a steam discharged from the nozzle 131 on the top of the bushing 121 around the discharge nozzle 131 mounted on the upper end of the up and down movable pipe 125 as shown in more detail in FIG. In order to prevent the penetration of the solenoid valve 120 through the gap between the bushing 121 and the up and down movable pipe 125 is fitted with a vapor penetration prevention cap 133 made of an injection molding.

As described above, according to the conventional steam discharging device 110, in order to withdraw the high-pressure steam generated inside the heating cooker 101 to the outside, the coil 115 of the solenoid valve 120 by the current applied from the power source. When this is excited, the diaphragm 123 at the position shown by the dotted line in FIG. 2 and the vertically movable tube 125 inserted into the central portion of the diaphragm 123 are pulled up to the position shown by the solid line.

As a result, the suction port 119 which is closed by the diaphragm 123 is opened, and the steam inside the heating cooker 101 flows into the space between the diaphragm 123 and the lower cap 117. The steam introduced in this way is discharged from the discharge nozzle 131 along the upper and lower movable tubes 125 through the steam inlet hole 135 formed through the sidewalls of the diaphragm 123 and the upper and lower movable tubes 125. The released steam impinges on the upper surface of the discharge port cap 112 and diffuses into the air through the opening between the discharge port cap 112 and the case 111.

At this time, the steam discharge device 110 infiltrate the steam on the top of the bushing 121 to prevent the steam discharged from the nozzle 131 is introduced into the interior through the gap between the bushing 121 and the vertical movable pipe 125. The prevention cap 133 is press-fitted, but the prevention of the vapor penetration performance of the prevention cap 133 made of an injection molding is reduced, so that the high-pressure steam penetrates the spring 129 through the gap in the direction of the arrow A in the drawing to the spring 129. ), The elastic repulsive force of the spring 129 is lowered, and the opening and closing performance of the solenoid valve 120 is lowered, thereby deteriorating the steam discharge performance of the steam discharge device 110, thereby causing a malfunction.

Therefore, the present invention has been devised to solve the problems of the conventional steam discharge device as described above, which exists between the up and down movable pipe serving as an open / close valve of the steam discharge device and the bushing for guiding the vertical movement of the vertical movable pipe. The high-pressure steam discharged from the nozzle of the upper and lower movable pipes through the gap penetrates into the solenoid valve causing the vertical movement of the upper and lower movable pipes and corrodes various parts such as the return spring, thereby preventing the overall operation performance of the steam discharge device from being lowered. Its purpose is to.

1 is a schematic cross-sectional view of a conventional electric pressure cooker.

Figure 2 is a longitudinal cross-sectional view of the steam discharge device of FIG.

Figure 3 is a longitudinal cross-sectional view of the steam discharge device according to the present invention.

Explanation of symbols on the main parts of the drawings

1: steam exhaust device 3: outer case

4: solenoid valve 7: coil

9: up and down movable pipe 11: bushing

19: discharge cap 21: bellows pipe

23: opening 27: wrinkles

31: lower cap 39: discharge nozzle

43: return spring

In order to achieve the above object, the present invention provides an outer case enclosing the outside, a solenoid coil embedded in the outer case and supported by the coil housing, and penetrated along the central axis of the coil housing and exposed upward and downward. A bushing inserted into the upper opening of the case so as to guide the copper pipe and the upper and lower movable pipes, a diaphragm into which the lower end of the upper and lower movable pipes is inserted, and a diaphragm inserted into and fixed to the lower opening of the outer case so that the central steam inlet is opened and closed by the diaphragm. In the steam discharge device consisting of a lower cap, to provide a steam discharge device for an electric pressure cooker having a cylindrical cap-shaped bellows pipe attached to each of the vertical movement and the bushing to seal the gap between the vertical movement tube and the bushing will be.

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

As shown in FIG. 3, the steam discharge device 1 according to the present invention serves to discharge the high pressure steam generated inside the electric pressure cooker to the outside like the conventional steam discharge device. (3), the solenoid valve assembly 17 inside the case 3, and the outlet cap 19 of the upper part of the case 3, and the lower cap 31 of the lower part.

Here, the outer case 3 is configured to form the outer body of the steam discharge device 1, and the solenoid valve assembly 17 is mounted therein. The solenoid valve assembly 17 is composed of a coil 7 bundle, a vertical movable tube 9, a diaphragm 13, a bushing 11, a return spring 43 and the like.

The double coil 7 is supported by the coil housing 5 to be excited to generate a magnetic force, and the vertical movable tube 9 is inserted through the coil housing 5 on the central axis of the coil housing 5 so that the coil 7 is vertically up and down according to the excitation of the coil 7. It is supposed to move to. The diaphragm 13 inserted into and attached to the lower end of the up and down movable pipe 9 has a central portion moving up and down along the up and down movable pipe 9 to open and close the steam inlet 15 of the lower cap 31. The outer circumferential surface is clamped between the lower end surface of the outer wall of the coil housing 5 and the upper end surface of the lower cap 31. In addition, the bushing 11 inserted into and fixed to the center of the upper end of the outer case 3 allows the upper and lower movable tubes 9 to pass through the through holes 33 opened in the central portion.

And the lower part of the upper and lower movable pipe (9) is a vapor inlet hole 35 is formed through the side of the diaphragm 13, the steam passage 37 is formed along the central axis from the inlet hole (35) The discharge nozzle 39 is attached to the upper end of the steam passage 37, and the locking jaw 41 protrudes in the circumferential direction between the lower surface of the coil housing 5 and the diaphragm 13, so that the coil housing 5 is disposed. Is supported to support the return spring 43 seated between

Then, in order to seal the gap A between the upper and lower movable tubes 9 and the bushing 11, an upper end of the outer peripheral surface of the bushing 11 is attached in a state in which a bellows tube 21 having a cylindrical cap is covered. The upper and lower movable tubes 9 are exposed to the outside through the opening 23 penetrating the center of the upper surface of the 21, and the inner peripheral surface of the bellows tube 21 is located at the upper end of the outer surface of the upper and lower movable tubes 9. Attached. At this time, since the upper surface is moved up and down in accordance with the vertical movement of the up and down movable tube 9, the bellows tube 21 is formed with a wrinkle portion 27 on the upper side of the cylindrical portion 25 so as to smooth the shandong have.

The steam discharge device 1 of the present invention configured as described above has the following operation.

First, when high pressure steam is generated inside the heating cooker of the electric pressure cooker, the coil 7 of the solenoid valve 4 is excited, and the up and down movable tube 9 overcomes the elastic repulsive force of the spring 43 by the magnetic force generated. Will rise. At this time, the upper and outer circumferential surfaces of the upper and lower movable tubes 9 and the bushing 11 and the upper and lower surfaces of the bellows tube 21 to which the ground and the lower surfaces are attached to the opening 23, respectively, are also raised together with the upper and lower movable tubes 9 and the bellows tube 21 ), The wrinkles 27 extend in the axial direction.

In addition, the diaphragm 13 fitted to the lower end of the upper and lower movable tubes 9 also has a central portion rising along the movable tube 9 so that the steam inlet 15 of the lower cap 31 is blocked by the central projecting portion of the diaphragm 13. The high-pressure steam introduced through the inlet 15 is gathered in the space between the lower cap 31 and the diaphragm 13, and the upper and lower portions are formed through the steam inlet hole 35 at the bottom of the upper and lower movable tubes 9. It blows out from the discharge nozzle 39 along the vapor path 37 of the copper pipe 9.

At this time, even though the discharged steam collides with the discharge port cap 19 and remains in the space between the discharge port cap 19 and the bushing 11, the gap A between the bushing 11 and the upper and lower movable pipes 9 is a bellows pipe. Since it is sealed by 21, it cannot penetrate into the inside of the solenoid valve 4 at all.

Then, after all the steam is discharged through the discharge hole 45 of the discharge port cap 19, the magnetic force by the coil (7) is erased by the repulsive force of the spring 43, the upper and lower movable pipe (9) is the original steam inlet ( 15) Returning to the closed position, the bellows pipe 21, which has been stretched, is also restored to its original state.

As described above, according to the steam discharging device of the present invention, the upper and lower movable tubes and the upper and lower movable tubes serving as the opening and closing valves of the steam inlet and the steam passage for discharging the high pressure steam inside the heating pot to the outside, and to guide the upper and lower movable tubes Inevitably, the gap generated between the upper and lower movable pipes and the bushings inserted between the upper and lower movable pipes are sealed by bellows pipes which are moved up and down together as the upper and lower movable pipes move and are discharged from the upper and lower movable pipes. By preventing the steam from penetrating into the steam exhaust device, various internal parts constituting the solenoid valve of the steam exhaust device can be prevented from being corroded by the steam, so that the steam exhaust device can not be malfunctioned or damaged even after prolonged use. Good operating performance can be maintained.

Therefore, the steam exhaust device of the present invention can exhibit normal performance without malfunction due to the damage of parts generated by long-term use, and furthermore, to prevent the damage that the user may suffer due to unexpected performance defects in advance. It ensures the safe use of the electric pressure cooker.

Although the present invention has been shown and described with respect to particular embodiments, it is well known in the art that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the accompanying Utility Model Claims. Anyone who owns it can easily find out.

Claims (2)

An outer case 3 enclosing the outside, a solenoid coil 7 embedded in the outer case 3 supported by the coil housing 5, and penetrating along the central axis of the coil housing 5 Upper and lower movable tubes 9 exposed upward of the case 3, bushings 11 inserted into and fixed to the upper openings of the case 3 to guide the upper and lower movable tubes 9 and lower ends of the upper and lower movable tubes 9. The diaphragm 13 to be inserted and attached, and the lower cap 17 is inserted into the lower opening of the outer case 3 so that the central steam inlet 15 is opened and closed by the diaphragm 13. In the steam exhaust device (1), a cylindrical cap-shaped bellows attached to each of the vertical movable pipe (9) and the bushing (11) to seal the gap (A) between the vertical movable pipe (9) and the bushing (11). Characterized by having a tube (21) Steam discharge device of the electric pressure cooker. According to claim 1, wherein the bellows pipe 21 is formed in the center of the upper surface through the opening 23 is inserted through the upper peripheral surface of the upper and lower movable tubes (9) attached to the upper peripheral surface of the upper end of the bushing (11). The side of the cylindrical portion 25 is a wrinkle discharge portion 27, characterized in that the vapor discharge device is formed.