KR100674509B1 - Valve gear for vapor elimination using electrical pressure pot - Google Patents

Abstract

The present invention simply improves the structure by directly coupling the support to the bottom of the solenoid valve, eliminating the need for a frame, and the steam discharge valve of the electric pressure cooker to simplify the assembly process by screwing the steam discharge pipe directly to the side of the support. As for

The support part is inserted into the installation hole of the cover and the lower part is fixed, and one end is screwed to the side surface of the support part, and the other end is screwed to the upper surface of the support part and the steam discharge pipe which is penetrated with the lid, and operates according to the signal of the controller. The solenoid valve is coupled to the lower end of the solenoid valve, characterized in that it comprises an opening and closing portion for opening and closing the outlet of the orifice of the support.

In this case, an orifice communicating with the inside of the inner pot is formed at the center of the lower portion, a discharge passage for discharging steam to the steam discharge pipe is formed at the side, and a flange for screwing the solenoid valve is formed at both sides of the upper portion. It is desirable to be.

Description

VALVE GEAR FOR VAPOR ELIMINATION USING ELECTRICAL PRESSURE POT}

1 is a cross-sectional view schematically showing the configuration of a general electric pressure cooker

Figure 2 is a cross-sectional view showing the configuration of the steam discharge valve of the electric pressure cooker according to the prior art.

Figure 3 is a perspective view showing the configuration of the steam discharge valve of the electric pressure cooker according to an embodiment of the present invention

4 is a cross-sectional view showing a closed operation state of the steam discharge valve of the electric pressure cooker according to the embodiment of the present invention.

5 is a cross-sectional view showing an opening operation state of the steam discharge valve of the electric pressure cooker according to the embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

10: support portion 11: orifice

12: discharge passage 13, 14: flange

15, 16, 17, 18: screw hole 19: positioning groove

20: steam exhaust pipe 21: steam movement path

22: coupling hole 23, 24: coupling screw

30: solenoid valve 40: opening and closing part

The present invention relates to a steam discharge valve of the electric pressure cooker, and more particularly, by closing or opening the operation according to a predetermined program in the process of cooking of food or the process of switching to warming after cooking to discharge more than necessary steam inside the pressure cooker It relates to a steam discharge valve of the electric pressure cooker to maintain the pressure properly.

Recently, as the technology of the electric rice cooker has been developed, a pressure cooker function has been used as a method for improving the taste of cooking. In general, an electric pressure cooker is a device that converts electrical energy into thermal energy and cooks the inner pot containing the food by heating it with an electric heating means. The cooking is performed. This will allow you to cook steamed dishes and other dishes as well as rice.

In general, since the inside of the electric pressure cooker is maintained at a high temperature and high pressure, if the internal steam pressure rises abnormally during the cooking process, there is a risk of an explosion accident. A steam discharge valve is provided to discharge some of the steam to the outside to prevent possible danger.

1 is a cross-sectional view schematically showing the configuration of a general electric pressure cooker.

As shown in FIG. 1, the electric pressure cooker 100 is opened to an upper portion so as to contain rice therein, and an inner pot 101 having a predetermined space is formed, and a heater for heating the bottom of the inner pot 101 is embedded. The heating plate 102 is installed on the upper side of the heating cooker 101, the heating heater 103 for heating to keep the inner pot 101 in a warm state, the cover 106 for sealing the upper opening of the inner pot 101 ), A heat insulation case 104 surrounding the outer portion of these parts, and a lid 105 for opening and closing the upper portion of the heat insulation case 104.

Here, the lid 105 is a safety valve 107 for natural or forcibly discharging the internal steam pressure to the outside when the internal steam pressure of the heated inner pot 101 reaches a predetermined value, that is, when the cooking is completed to change to warming ) Is provided.

The safety valve 107 communicates with the cover 106 of the inner pot 101 and is installed to be opened and closed at an upper end of the steam discharge pipe 107a protruding to the top of the lid 105 and the steam discharge pipe 107a. When the internal steam pressure of the inner pot 101 reaches a predetermined value, the weight consists of a weight 107b for opening the steam discharge pipe 107a by the steam pressure. Further, when the steam discharge pipe 107a of the safety valve 107 is not blocked or operated, the solenoid is electrically operated according to the set internal steam pressure of the inner pot 101 to discharge the steam pressure to the outside. ) Is provided.

2 is a cross-sectional view showing the configuration of a steam discharge valve of an electric pressure cooker according to the prior art, and is a design proposed in Utility Model Registration No. 20-1996-019948.

As shown in FIG. 2, the steam discharge valve 110 includes a support 130 which is inserted into the installation hole of the cover 106 and the lower portion thereof is fixed by the nut 120; A frame 150 having one end fastened by a screw 131 on an upper portion of the support part 130 and having a lid 105 and a steam discharge pipe 140 penetrated at the other end thereof; A solenoid valve 160 installed on an upper surface of the center of the frame 150 and opened / closed according to a signal of a controller; The lower portion of the solenoid valve 160 is formed in the support portion 130 and blocks the outlet of the orifice 132 communicating with the inside of the pressure vessel and at the same time the operating seat portion in accordance with the internal pressure passing through the orifice 132 ( 170); The diaphragm 180 for preventing the contact of the vapor and liquid emitted through the orifice 132 is configured to be installed between the lower diaphragm chamber formed on the upper portion of the support 130 and the upper diaphragm chamber formed on the lower frame 150.

In addition, the support 130 is formed with a discharge passage 134 for discharging steam to abut the lower end of the steam discharge pipe 140 and the flange portion 136 for screwing the frame 150 on the other side Is formed.

Looking at the operation of the steam discharge valve 110 according to the prior art having the configuration as described above, when the solenoid valve 160 operates in accordance with an electrical signal from the outside, the diaphragm 180 is also moved. Accordingly, the seat portion 170, which is a part of the diaphragm 180, is also moved by the operation of the diaphragm 180, and the seat portion 170 opens and closes the orifice 132 of the support portion 130 to open and close the flow of steam.

Accordingly, the steam is discharged to the steam discharge pipe 140 through the discharge passage 134 through the lower diaphragm chamber through the orifice 132.

However, the steam discharge valve 110 according to the prior art as described above has various problems.

First, the diaphragm 180 is used to prevent steam going to the solenoid valve 160, but the diaphragm 180 is often damaged by high temperature / high pressure steam, and thus it is difficult to show an effect, and the diaphragm 180 By providing the frame 150 as a means for fixing the () has a problem that the structure is complicated.

Second, as the means for connecting the frame 150 and the steam discharge pipe 140, the female assembly and the male screw are formed so that the assembly process is complicated and productivity is lowered.

Third, since the discharge passage 134 formed in the support 130 must be bent to contact the lower end of the steam discharge pipe 140, the mold is complicated and the cost increases.

Fourth, there is a problem in that the coupling force is broken by the steam pressure by combining one side by using the screw 131 to couple the frame 150 and the support 130.

Fifth, when the operation of the solenoid valve 160, the air compression phenomenon occurs inside the operation can not be made smoothly because the malfunction may occur, when the internal steam pressure of the inner pot 101 rapidly increases There is a problem that is difficult to cope easily.

The present invention has been made to solve the above problems, the purpose of which does not use a diaphragm, by directly coupling the support portion to the lower portion of the solenoid valve to eliminate the need for the frame steam discharge of the electric pressure cooker simply improved To provide a valve.

In addition, another object of the present invention is to provide a steam discharge valve of the electric pressure cooker to form a discharge passage in a straight line, and to simplify the assembly process by screwing the steam discharge pipe directly to the side of the support.

In addition, another object of the present invention is to form a flange at both ends for coupling the support portion and the solenoid valve, and to form a positioning groove to improve the bonding force to prevent damage due to steam pressure to facilitate the screwing process A steam discharge valve for an electric pressure cooker is provided.

In addition, another object of the present invention is to provide a steam discharge valve of the electric pressure cooker so that the operation is smoothly formed by penetrating the air discharge hole in the plunger to prevent the air compression phenomenon in the plunger.

According to a feature of the present invention for achieving the above object, in the steam discharge valve installed between the cover and the lid of the electric pressure cooker; The lower part is inserted into the installation hole of the cover and the lower part is fastened, one end is screwed to the side of the support part and the other end is screwed to the upper surface of the vapor discharge pipe and the support part is screwed to operate according to the signal of the controller The solenoid valve is coupled to the lower end of the solenoid valve and provides a steam discharge valve of the electric pressure cooker comprising an opening and closing portion for opening and closing the outlet of the orifice of the support.

At this time, according to an additional feature of the present invention, the support portion is formed in the lower center orifice communicating with the inside of the inner pot, the side is formed with a discharge passage for discharging steam to the steam discharge pipe, the upper and the solenoid valve Preferably, flanges for screwing are formed on both sides.

In addition, according to another additional feature of the present invention, the solenoid valve has a d-shaped housing having a lower opening, a donut-shaped coil unit installed inside the housing, and a lower flange formed therein. A housing cover for covering a part, a core formed between the coil part and a protrusion formed through the upper part of the housing by press-fitting, a plunger elastically installed on the core by an elastic body and coupled to an opening and closing part at a lower end thereof, The plunger is preferably formed to penetrate the air discharge hole to prevent the compression of the air inside the operation is made smoothly.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention described below with reference to the accompanying drawings by those skilled in the art.

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

Figure 3 is a perspective view showing the configuration of the steam discharge valve of the electric pressure cooker according to the embodiment of the present invention, Figure 4 is a cross-sectional view showing a closed operation state of the steam discharge valve of the electric pressure cooker according to the embodiment of the present invention, 5 is a cross-sectional view showing an opening operation state of the steam discharge valve of the electric pressure cooker according to the embodiment of the present invention.

3 to 5, reference numeral 10 denotes a support portion which is inserted into the installation hole of the cover (see 106 of FIG. 1) and at the same time the lower portion is fixed by a nut (not shown), and 20 is one end thereof. Screwed to the side of the support 10, the other end is a steam discharge pipe penetrated through the lid (see 105 of FIG. 1), 30 is screwed to the upper surface of the support 10 and the solenoid operated according to the signal of the controller Indicates a valve.

In addition, reference numeral 40 denotes an opening and closing portion coupled to the lower end of the solenoid valve 30 to open and close the outlet of the orifice 11 of the support 10. At this time, the opening and closing portion 40 is preferably used a silicon material having an elastic force in order to block the orifice 11 and the upper surface to easily block the lower hole of the solenoid valve 30 in accordance with the vertical movement.

Looking at the configuration of the support 10 in more detail in the above, the lower center is formed with an orifice (11) communicating with the inside of the inner pot (see 101 in Figure 1), the side for discharging steam to the steam discharge pipe (20) The discharge passage 12 is formed, and the flanges 13 and 14 are formed at both sides thereof.

In this case, first and second screw holes 15 and 16 for screwing with the steam discharge pipe 20 are formed at both sides of the discharge passage 12, and the solenoid valve 30 is formed at the flanges 13 and 14. ) Are formed with third and fourth screw holes 17 and 18 for screwing. In addition, positioning grooves 19 and 19a are formed on the upper surface of the support part 10 so that the ends of the housing 34 are inserted into positions opposite to each other to fix the position.

In addition, the steam discharge pipe 20 is formed with a steam movement path 21 continuous to the discharge passage 12 of the support 10, the lower and both sides of the first and second screw holes (15, 16) A coupling hole 22 is formed at a position corresponding to the coupling hole 22 and penetrates through the coupling screws 23 and 24.

In addition, a coupling hole 31 is formed at a position corresponding to the third and fourth screw holes 17 and 18 in the lower flange of the solenoid valve 30 and is penetrated by the coupling screws 32 and 33. At this time, when looking at the internal configuration of the solenoid valve 30, the housing 34 of the bottom-shaped (C) -shaped opening, the donut-shaped coil unit 35 is installed in the housing 34, A lower flange is formed and a housing cover 36 for covering the coil part 35, a core 37 formed between the coil part 35 and a protrusion formed through the upper part of the housing 34 by press-through; The core 37 is elastically installed by an elastic body 38 and has a plunger 39 coupled to an opening and closing portion 40 at a lower end thereof.

In the above, in order to couple the housing 34 and the housing cover 36, grooves are formed at both sides of the housing cover 36 to be opened to the outside, and both ends of the housing 34 are press-fitted into the grooves. Both ends of 34 are inserted into the positioning grooves 19 and 19a.

An air discharge hole 39a is formed in one side of the plunger 39 to prevent air compression from occurring due to the upward movement of the plunger 39 so that the operation is smoothly performed.

In order to prevent the steam discharged through the discharge passage 12 and the steam moving path 21 to be discharged into the lid (see 105 of FIG. 1), the support 10 and the steam discharge pipe 20 A first o-ring 20a is installed on the mating surface, and a second o-ring 30a is installed on the mating surface of the support 10 and the solenoid valve 30.

In addition, a third O-ring 37a is provided on the core 37 to prevent the air pressure flowing between the core 37 and the elastic body 38 from flowing out to the portion where the core 37 and the housing 34 are coupled to each other. Insert is installed.

Referring to the operation of the present invention having the configuration as described above in detail.

When the opening operation signal of the control unit (not shown) is not input, that is, when the closing operation signal is input, as shown in FIG. 4, the opening and closing portion 40 is connected to the support 10 by the force of the elastic body 38. The orifice 11 is kept closed so that steam is not discharged to the outside.

Then, when the open operation signal is input from the control unit (not shown), the plunger 39 is attached to the core 37 by the magnetic force generated in the coil unit 35, and as shown in FIG. 40) rises, thereby creating a path for vapor evacuation. That is, the steam is discharged to the outside while sequentially passing through the orifice 11 and the discharge passage 12 of the support portion 10, and the steam movement path 21 of the steam discharge pipe 20.

Meanwhile, in the present invention, when the steam pressure inside the inner pot (see 101 in FIG. 1) rises by a predetermined value or more in a closed state, the opening and closing portion 40 and the plunger 39 when the steam pressure overcomes the elasticity of the elastic body 38. Is pushed up due to the steam pressure, thereby the orifice 11 is opened to form a movement path of the steam as described above, so that the steam is automatically discharged to perform the function of the safety valve. In this case, when the steam pressure inside the inner pot (see 101 in FIG. 1) falls below a predetermined value, the opening and closing portion 40 blocks the orifice 11 by the elastic force of the elastic body 38 to block the discharge of steam. do.

While such an operation is performed, air compression may occur between the plunger 39 and the core 37 as the plunger 39 moves up, and the air is discharged through the air discharge hole 39a, thereby plunging the plunger. The operation of 39 is made smoothly.

The present invention is not limited to the embodiments described above, and various modifications and changes can be made by those skilled in the art, which are included in the spirit and scope of the present invention as defined in the appended claims.

As described above, the steam discharge valve of the electric pressure cooker according to the present invention does not use a diaphragm, unlike the prior art, and the structure is simplified by eliminating the need for a frame by directly coupling the support part to the bottom of the solenoid valve. .

In addition, by forming the discharge passage in a straight line, and by directly screwing the steam discharge pipe to the side of the support portion, the assembly process is simplified, the productivity is improved, and the mold is simplified, the cost can be lowered.

In addition, the flange is formed at both ends in order to couple the support portion and the solenoid valve, and by forming the positioning groove, the coupling force is improved to prevent breakage due to vapor pressure, and at the same time, there is an effect of making the screwing process easy.

In addition, the air discharge hole is formed to penetrate the plunger, thereby preventing the air compression phenomenon therein, thereby making the operation smooth.

Claims (3)

In the steam discharge valve installed between the cover and the lid of the electric pressure cooker, The orifice communicating with the inside of the inner pot is formed at the center of the lower part while the lower part is fixed at the same time as being inserted into the installation hole of the cover. A support part formed at both sides of a flange for coupling; One end is screwed to the side of the support and the other end of the steam exhaust pipe and the penetrating; A solenoid valve screwed to an upper surface of the support part and operated according to a signal of a controller; Coupled to the lower end of the solenoid valve steam discharge valve of the electric pressure cooker, characterized in that it comprises an opening and closing portion for opening and closing the outlet of the orifice of the support. delete The method of claim 1, The solenoid valve may include a d-shaped housing having an open lower portion, a donut-shaped coil portion installed inside the housing, a housing cover for forming a lower flange and covering the coil portion, and the coil portion. And a plunger installed in the core and having a protrusion formed through the upper part of the housing, elastically mounted to the core by an elastic body, and having an opening and closing portion coupled to a lower end thereof. The plunger is a steam discharge valve of the electric pressure cooker, characterized in that the air discharge hole is formed to penetrate the air to prevent the operation of the internal compression smoothly.

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