KR101953253B1 - Stainless steel pressure cooker anti-corrosion safety valve - Google Patents

Abstract

The present invention relates to a safety valve for preventing corrosion in a stainless pressure cooker. The safety valve discharges steam generated in the pressure cooker by being installed in a hole formed on a lid of a stainless pressure cooker. The safety valve comprises: a fixing unit; a pressure control unit including a hollow and having a female thread outside; a sealing unit connected to the pressure control unit and sealing an air flowing port formed in the fixing unit by ascending and descending; a valve body unit connected to the female thread of the pressure control unit by rotating; an ascending and descending unit controlling discharge of the steam by ascending and descending to open and close the pressure control unit; a housing formed of an insulator such as rubber and inserted and coupled into an end of the fixing unit to be separated; and a cover discharging the steam flowing inside through the pressure control unit to the surface of the lid. So, the safety valve for preventing corrosion in a stainless pressure cooker can prevent the corrosion generated when there is a potential difference as the housing, which is a part of the safety valve and one of the safety valves of the pressure cooker, is formed of the insulator such as the rubber.

Description

STAINLESS STEEL PRESSURE COOKER ANTI-CORROSION SAFETY VALVE}

The present invention relates to a safety valve for preventing corrosion of a stainless steel pressure cooker, and more particularly, to a corrosion prevention safety valve of a stainless pressure cooker capable of preventing corrosion by being made of an insulator such as rubber, which is part of the safety valve of the pressure cooker. It is about.

In general, the pressure cooker used in the home can cook in a high temperature, high pressure atmosphere for the cooking objects loaded in the container, such a pressure cooker is set at the high temperature, high pressure when cooking when the lid is closed for the container to charge the cooking object Confidentiality to maintain the state of is absolutely required.

The pressure cooker is a mechanism for cooking cooking objects in a short time by raising the pressure in the pot by sealing the lid, and includes a pot and a lid made of a material such as stainless steel or aluminum, and a sealing packing is installed between the pot and the lid.

In addition, the lid is provided with a pressure control valve, that is, a signal addition, the signal weight is automatically opened when the pressure inside the pot is above a certain level to discharge the steam to the outside.

On the other hand, the safety valve is provided in the cap adjacent to the pressure control valve (signal weight) is prepared for when the pressure control valve does not operate normally.

In the conventional safety valve 10, as shown in Figure 1a and 1b, the upper case 11 and the lower case 12 with the packing 13 at the inside and the outside of the lid 20, respectively. Screwed to each other, a plurality of vent holes (11a) (12a) are formed on the side or bottom of the upper case 11 and the lower case 12, while lowering the lower case 12 by raising and lowering by the pressure and the weight of the inside of the body The valve member 14 for selectively opening and closing the side vent hole 12a is inserted into the lower case 12. In recent years, a plurality of cylinders are formed laterally by forming a space portion inside the valve member 14. It forms pores and inserts an auxiliary valve member consisting of a spring and a ball into the space, so that even if the valve member 14 cannot be raised or lowered, the ball is raised and lowered by the pressure inside the body and the elastic force of the spring, and the pressure inside the body is I'm pulling it out.

The conventional upper case 11 and the lower case 12 is made of an aluminum material to reduce the manufacturing cost.

However, the conventional safety valve upper case and the lower case is made of aluminum has a problem that is severely corroded when contacted with moisture.

Specifically, the galvanic corrosion during corrosion is also called dissimilar metal contact corrosion, and when two dissimilar metals are immersed in a solution, there is a potential difference between them. The transfer of electrons takes place. Thus, the corrosion rate of the metal with the negative potential is reduced, and the corrosion rate of the metal with the active potential is promoted. In other words, the former becomes a cathode and the latter becomes an anode.

One important factor influencing galvanic corrosion is the area ratio of the anode and cathode. The most dangerous condition for galvanic corrosion is small anode-cathode. The higher the current density at the anode area, the higher the corrosion rate. On the contrary, the sono-cathode is a good condition to reduce galvanic corrosion. For example, consider the iron nail embedded in a copper plate and the copper nail embedded in an iron plate. The former is a small anode-large cathode, and the latter is a noise-polar cathode.

As a result, galvanic corrosion is much more severe in the former than in the latter.

Therefore, due to galvanic corrosion generated between the upper case and the lower case made of conventional aluminum, there is a problem that the corrosion contents fall on the cooking objects cooked in the pressure cooker.

In addition, there is a problem in that the user to use the pressure cooker due to the corrosion of the upper case and the lower case provided on the lid in appearance unclean.

As related prior arts, there is registered utility model publication No. 20-0266145 (designated name: pressure pot cost silicone safety valve, registration date: February 15, 2002) and published patent publication No. 10-2001-0010380 (invention) Name: Safety valve device for pressure cooker, published date: February 05, 2001).

The present invention has been made to solve the problems of the prior art as described above, a part of the safety valve of the safety device of the pressure cooker made of an insulator such as rubber made of a stainless steel pressure cooker to prevent corrosion of the safety valve The purpose.

Other objects of the present invention may be understood through the features of the present invention, more clearly understood through the embodiments of the present invention, and may be realized by means and combinations indicated in the claims.

The present invention has the following technical features to achieve the problem to be solved by the present invention as described above.

In the safety valve for preventing corrosion of the stainless pressure cooker according to the present invention is provided in a hole formed in the lid of the stainless pressure cooker, the safety valve for discharging the steam generated in the interior of the pressure cooker, the safety valve, a plurality of safety valves having a different diameter therein Four hollows are formed, one end of which is formed a large diameter hollow penetrates the hole of the lid, and is spaced apart from the fixing portion, the pressure adjusting portion is formed in the interior while forming a female thread on the outside and The coupling part is coupled to the pressure control unit, and seals the communication port formed in the fixed portion through the lifting, the hollow shape, one end is formed with a through hole, the other end is formed with a male thread inside the pressure The valve body portion is rotatably coupled to the female thread of the control portion, one end is mounted to the hollow of the pressure control portion, the other end is the valve body A lifting part mounted on the hollow of the part and being lifted to open and close the pressure regulating part to control the discharge of steam flowing into the inlet communicating with the hollow of the pressure adjusting part, and an insulator such as rubber, and the hole of the lid The housing is inserted into one end portion of the fixing portion penetrated, and is detachably fitted to the valve body in a state in which a steam outlet is formed in the outer circumference thereof. And a cover for discharging to the surface of the lid.

In the anti-corrosion safety valve of the stainless steel pressure cooker according to the present invention, the fixing portion is formed with a coupling protrusion at the upper end of the hollow, the fitting groove is formed in the lower portion of the coupling protrusion, the housing is the upper portion of the upper A coupling groove is formed at an inner side, and a fitting protrusion is formed at a lower portion of the coupling groove, and the coupling protrusion of the fixing unit is coupled while being inserted into the coupling groove of the housing, and the fitting protrusion of the housing is a fitting groove of the fixing unit. The fixing part and the housing are fitted to each other.

In the anti-corrosion safety valve of the stainless steel pressure cooker according to the present invention, the housing is formed in a top-down light shape, an insertion groove is formed around the outer circumferential surface of the housing, and the hole of the lid is fitted into the insertion groove of the housing.

In the anti-corrosion safety valve of a stainless steel pressure cooker according to the present invention, the lifting unit includes a rod pin embedded in the pressure control unit and a spring coupled to an outer surface of the rod pin for elastic lifting movement of the rod pin. Is inserted and coupled to the rod pin, is coupled to the spring spaced apart, consists of a packing for sealing the pressure control unit.

In the anti-corrosion safety valve of the stainless steel pressure cooker according to the present invention, the rod pin is made of a cylindrical shape, at least one surface is made flat to introduce more steam than the cylindrical rod pin.

In the safety valve for preventing corrosion of a stainless steel pressure cooker according to the present invention, one end of the rod pin protrudes to the outside or flows into the pressure adjusting part due to contraction and relaxation of the spring.

In the anti-corrosion safety valve of the stainless steel pressure cooker according to the present invention, the housing is made of an insulator such as rubber as a whole or an insulator is formed in a part of the housing, the outer portion of the fixing part which is in direct contact with the inside of the housing An insulator is formed between the insulators, and the insulators are respectively formed in the insertion grooves of the housing which are in direct contact with the holes of the lid.

In the anti-corrosion safety valve of the stainless steel pressure cooker according to the present invention, the cover protrudes to the surface of the lid due to the increased pressure inside the pressure cooker.

In the anti-corrosion safety valve of the stainless steel pressure cooker according to the present invention, the valve body portion has a through hole formed in one end portion is formed in the upper and lower narrow shape is formed with a locking groove in the inner direction, the cover is caught on the lower inner surface of the steam discharge port The jaw is formed to protrude, and the lower surface of the locking jaw is formed to be inclined, and one end of the upper and lower narrow shape of the valve body portion is raised upward along the guide of the lower surface of the locking jaw formed to be inclined of the cover, and the locking groove of the valve body is formed. It is caught in the cover jaw.

The present invention can prevent corrosion caused when there is a potential difference because the housing is a part of the safety valve, one of the safety device of the pressure cooker is made of an insulator such as rubber is not in contact with the dissimilar metal through the means for solving the above problems. It works.

In addition, the present invention can prevent the corrosion of the safety valve has the effect of maintaining the clean state of the food cooked inside the pressure cooker.

In addition, the present invention has an effect that the housing made of an insulator can be used for corrosion resistance and heat resistance, and of course, can be used semi-permanently without deformation.

Other effects of the present invention may be understood through the features of the present invention, more clearly understood through the embodiments of the present invention, and may be exerted by means and combinations indicated in the claims.

1a and 1b is a view of one embodiment of a safety valve according to the prior art,
Figure 2 is a perspective view of one embodiment of the lid of the pressure cooker equipped with a safety valve and a pressure control valve of the present invention,
Figure 3 is a perspective view of one embodiment of a corrosion prevention safety valve of a stainless steel pressure cooker according to the present invention,
4 is a perspective view showing the separated state of the safety valve according to FIG.
5 is a cross-sectional view showing the interior of the safety valve according to FIG.
6 is a view showing a state in which the pressure adjusting portion, the valve body portion and the cover according to FIG.
Figure 7 shows a further embodiment of a housing made of an insulator according to figure 3;

DETAILED DESCRIPTION The following detailed description of the invention refers to the accompanying drawings that show, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It is to be understood that the various embodiments of the invention are different, but need not be mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the present invention with respect to one embodiment. In addition, it is to be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present invention is defined only by the appended claims, along with the full scope of equivalents to which such claims are entitled. Like reference numerals in the drawings refer to the same or similar functions throughout the several aspects.

Figure 2 is a perspective view of one embodiment of a lid of a pressure cooker equipped with a safety valve and a pressure control valve of the present invention, Figure 3 is a perspective view of one embodiment of a corrosion prevention safety valve of a stainless steel pressure cooker according to the present invention, Figure 4 3 is a perspective view showing the separated state of the safety valve according to Figure 3, Figure 5 is a cross-sectional view showing the interior of the safety valve according to Figure 3, Figure 6 is a state in which the pressure regulating portion, the valve body and the cover according to Figure 3 is raised 7 is a view of another embodiment of a housing made of an insulator according to FIG. 3.

Safety valve 100 for preventing corrosion of the stainless steel pressure cooker according to the present invention, as shown in Figures 2 to 7, the fixing part 110, the pressure adjusting part 120, the sealing part 130, the valve body portion ( 140, the lifting unit 150, the housing 160, and the cover 170.

The corrosion prevention safety valve 100 of the stainless steel pressure cooker according to the present invention is provided in a hole formed in the lid 10 of the pressure cooker to discharge the steam generated inside the container of the pressure cooker to the outside.

The lid 10 to which the safety valve 100 is coupled is provided adjacent to the safety valve 100 as well as the pressure control valve 11 to open when the pressure generated during cooking is reached. do.

Safety valve 100 is to be opened when the pressure control valve 11 is not normally operated or when the pressure of the pressure cooker increases above the set value even when the pressure control valve 11 is operated.

The fixing part 110 has a plurality of hollows having different diameters formed therein, and one end of the hollow having a large diameter penetrates through the hole of the lid 10.

The fixing part 110 has a coupling protrusion 111 formed at the upper end of the hollow, and a fitting groove 112 is formed at the lower portion of the coupling protrusion 111, and the housing 160 has an inner side of the upper end having the upper and lower beam shapes. A coupling groove 162 is formed in the fitting groove, and a fitting protrusion 161 is formed at the lower portion of the coupling groove 162, and the coupling protrusion 111 of the fixing part 110 is coupled to the coupling groove 162 of the housing 160. It is coupled while being inserted, the fitting protrusion 161 of the housing 160 is fitted to the fixing portion 110 and the housing 160 by fitting to the fitting groove 112 of the fixing portion 110.

The pressure adjusting part 120 is disposed to be spaced apart from the fixing part 110, and a hollow thread 122 is formed therein while a female screw thread 121 is formed outside.

Looking specifically, the pressure adjusting unit 120 is made of a disk shape of the appropriate thickness, the male screw thread 121 is formed on the top of the male screw thread 142 formed inside the valve body 140 to be described below Screwed in.

The hollow 122 of the pressure adjusting unit 120 is formed so that the rod pin 151 of the elevating unit 150 can be easily lifted, the inlet 123 of the pressure adjusting unit 120 is the steam of the pressure cooker flows in The passage 122 is in communication with the hollow 122.

The pressure adjusting unit 120 is also formed with a groove 124 on the lower surface of the inlet 123 is formed, the groove 124 is a device such as a screwdriver when the pressure adjusting unit 120 is coupled to the valve body portion 140 After inserting, it can be easily rotated.

The groove 124 can be easily introduced steam through the groove 124 even if the inlet 123 through which steam is introduced due to the shell of the beans put in when cooking rice or rice.

The sealing part 130 is coupled to the pressure adjusting part 120 and seals the communication port formed in the fixing part 110 through lifting.

Specifically, the sealing unit 130 is made of a cylindrical shape, the diameter is made of two cylindrical shapes are connected integrally and different.

The sealing unit 130 is made of silicone, synthetic rubber, etc., having excellent flexibility and elasticity, and the communication port 113 and the valve body of the fixing unit 110 are inclined while the one end having a larger diameter is inclined when rising in the fixing unit 110 direction. The gap with the part 140 is sealed.

The valve body portion 140 has a hollow shape, one end of the through-hole 141 is formed, the other end is formed with a male screw thread 142 therein is rotatably coupled to the female screw thread 121 of the pressure control unit 120 do.

Specifically, the valve body portion 140 has one end portion through which the through hole 141 is formed in the upper and lower narrow shapes, and the other end portion in which the male thread 142 is formed has a cylindrical shape, and one end portion of the upper and lower narrow shapes. The other end of the male screw thread 142 is formed to be connected.

The valve body 140 is formed with a through hole 141 having one end portion having an upper and lower narrow shape, and a locking groove 143 is formed inwardly, and the cover 170 is caught by a lower inner surface of the steam outlet 171. The jaw 172 is protruded, but the lower surface portion of the locking jaw 172 is formed to be inclined, and one end of the upper and lower narrow shape of the valve body 140 follows the guide of the lower surface of the locking jaw 172 formed to be inclined of the cover 170. The lifting groove 143 of the valve body 140 is caught by the locking jaw 172 of the cover 170 while being lifted upward.

Due to the locking groove 143 of the valve body 140 and the locking jaw 172 of the cover 170, the coupling between the valve body 140 and the cover 170 is easy, while the separation is difficult.

Lifting unit 150 is one end is mounted to the hollow of the pressure control unit 120, the other end is mounted to the hollow of the valve body portion 140 is raised and lowered to enable the opening and closing of the pressure control unit 120, the pressure control unit Intermittent discharge of the steam flowing into the inlet 123 is in communication with the hollow 122 of (120).

The lifting unit 150 includes a rod pin 151, a spring 152, and a packing 153.

The rod pin 151 is built in the pressure regulating unit 120, and at least one surface thereof is formed flat so that steam flows smoothly through the inlet 123 of the pressure regulating unit 120.

The rod pin 151 does not operate when the inside of the pressure cooker is at an average pressure, and ascends upward when the pressure reaches the KS standard.

Rod pin 151 is made of a cylindrical shape, based on the drawing, both sides are formed to be flat, it can introduce more steam than the cylindrical rod pin.

One end of the rod pin 151 protrudes to the outside or flows into the pressure adjusting part 120 due to the contraction and relaxation of the spring 152.

When the rod pin 151 protrudes to the outside, foreign matters such as rice grass (bowl) are prevented from entering the inside of the pressure control unit 120. On the contrary, when the rod pin 151 is accommodated inside, steam To discharge.

Spring 152 is coupled to the outer surface of the rod pin 151 for the elastic lifting movement of the rod pin 151, one end of the spring 152 is supported by the rod pin 151, the other end of the valve It is supported inside the body 140.

The spring 152 is maintained in a relaxed state when the inside of the usual pressure cooker, such as the rod pin 151 above, reaches an average pressure, and then contracts upward when the pressure reaches the KS standard.

The packing 153 is inserted into and coupled to the rod pin 151, and is coupled to the spring 152 to be spaced apart from each other to seal the pressure control unit 120.

The packing 153 is made of silicone or synthetic rubber having excellent flexibility, such as the sealing part 130 to seal the pressure control part 120 without any gap, and the usual packing 153 is pressurized due to the relaxation of the spring 152. While closing while touching the hollow 122 of the adjusting unit 120, when the spring 152 is contracted due to the pressure of the pressure cooker is separated from the hollow 122 of the pressure adjusting unit 120.

The housing 160 is made of an insulator having elasticity such as rubber and is fitted to one end of the fixing part 110 penetrating the hole of the lid 10, and is detachably fitted.

Specifically, the housing 160 is disposed on the outer surface of the lid 10, that is, the upper surface, and the fixing portion 110 is disposed on the inner surface of the lid 10, that is, the lower surface of the lid 10. The coupling protrusion 111 penetrates through the coupling groove 162 of the housing 160 to be coupled to the lid 10.

The housing 160 has a shape of upper and lower beams, and an insertion groove 163 is formed around the outer circumferential surface of the housing 160, and a hole of the lid 10 is fitted into the insertion groove 163 of the housing 160.

The housing 160 is formed in a structure that can be separated from the fixing part 110, so that when cleaning is required due to foreign matters generated over time, the housing 160 can be easily separated and washed from the fixing part 110 to always clean hygiene. State can be maintained.

Safety valve 100 made of an insulator housing 160 is provided for convenience because it does not require a separate O-ring or packing.

As shown in FIG. 7, the housing 160 may include an insulator such as rubber as a whole or an insulator R formed in a part of the housing 160, and may be in direct contact with the inside of the housing 160. The insulator R is formed between the outside of the 110, and the insulator R is formed in the insertion groove 163 of the housing 160 which is in direct contact with the hole of the lid 10.

Specifically, the insulator R is directly between the engaging protrusion 111 of the fixing part 110 in direct contact with the coupling groove 162 of the housing 160 and directly with the fitting protrusion 161 of the housing 160. It is interposed between the fitting grooves 112 of the fixing part 110 in contact.

The cover 170 is fitted to the valve body 140 in a state where the steam outlet 171 is formed on the outer circumference thereof, and discharges steam introduced through the pressure regulator 120 to the surface of the lid 10.

The cover 170 is made of synthetic rubber or natural rubber with excellent flexibility, and can be easily manufactured as well as manufactured in various colors.

The cover 170 has a locking jaw 172 formed therein, which is adjacent to the steam outlet 171, that is, formed at the bottom thereof so that the locking jaw 172 is caught in the locking groove 143 of the valve body 140. do.

The cover 170 performs two roles. One visually warns the user that the lid 10 should not be opened from the pressure cooker for safety, and the other discharges steam inside the pressure cooker to the outside due to the steam outlet 171 formed in the cover 170.

The lower surface of the locking step 172 of the cover 170 is formed to be inclined, so that one end of the upper and lower narrow shape of the valve body 140 is easily guided through the inclined surface so that the locking groove of the valve body 140 is formed. On the other hand, the separation is made difficult.

The present invention illustrates a pressure cooker made of a material of stainless steel, but may be changed to a pressure cooker made of a material of aluminum in some cases.

In the above described the present invention based on the preferred embodiment, but the technical idea of the present invention is not limited to this, it can be modified or changed within the scope of the claims that have ordinary knowledge in the technical field to which the present invention belongs. It will be apparent to those skilled in the art, and such modifications and variations will belong to the appended claims.

10, 20: lid
11: Pressure regulating valve
100: corrosion protection safety valve of stainless steel pressure cooker
110: fixed part
111: coupling protrusion
112: fitting groove
120: pressure control unit
121: female thread
122: hollow
123: inlet
124: home
130: sealed
140: valve body
141: through hole
142: male thread
143: hanging groove
150: lift
151: rope pin
152: spring
153: Packing
160: housing
161: fitting
162: coupling groove
163: Insertion Groove
164: hollow
170: cover
171 steam outlet
172: jamming jaw
R: Insulator

Claims (9)

In the safety valve provided in the hole formed in the lid of the stainless steel pressure cooker for discharging the steam generated inside the pressure cooker,
The safety valve,
A plurality of hollows having different diameters formed therein, and a fixed portion having one end having a large hollow formed therein through the hole of the lid;
A pressure adjusting part disposed to be spaced apart from the fixing part and having a hollow formed therein while a female thread is formed on the outside;
A sealing part coupled to the pressure adjusting part and sealing a communication hole formed in the fixed part through lifting;
In the hollow shape, one end is formed with a through hole, the other end is formed with a male screw thread inside the valve body portion is rotatably coupled to the female screw thread of the pressure control unit,
One end is mounted to the hollow of the pressure regulator, the other end is mounted to the hollow of the valve body portion is raised to open and close the pressure regulator to control the discharge of the steam flowing into the inlet communicating with the hollow of the pressure regulator. Lift,
A housing made of an insulator such as rubber and fitted to one end of the fixing part passing through the hole of the lid, the housing being detachably fitted to the housing;
It is made of a cover which is fitted to the valve body in the state where the steam outlet is formed in the outer circumference, and discharges the steam flowing through the pressure regulator to the surface of the lid,
The fixing part has a coupling protrusion formed at an upper end of which the hollow is formed, and a fitting groove is formed at a lower portion of the coupling protrusion, and the housing has a coupling groove formed at an inner side of an upper end having an upper light beam shape, and a lower portion of the coupling groove. A fitting protrusion is formed, and the coupling protrusion of the fixing part is coupled while being inserted into the coupling groove of the housing, and the fitting protrusion of the housing is fitted into the fitting groove of the fixing part so that the fixing part and the housing are fitted together. Anti-corrosion safety valve for stainless steel pressure cooker. delete The method of claim 1,
The housing is made of a top-down light shape, the insertion groove is formed around the outer peripheral surface of the housing, the hole of the lid is inserted into the insertion groove of the housing, the corrosion prevention safety valve of the stainless steel pressure cooker. The method of claim 1,
The lifting unit,
A rod pin embedded in the pressure control unit;
Spring coupled to the outer surface of the rod pin for the elastic lifting movement of the rod pin,
Inserted and coupled to the rod pin, the spring is coupled to the spaced apart, the safety valve for preventing corrosion of the stainless pressure cooker, characterized in that consisting of a packing for sealing the pressure regulator. The method of claim 4, wherein
Wherein the rod pin is made of a cylindrical shape, at least one surface is made of a stainless steel pressure cooker corrosion prevention safety valve, characterized in that to inject more steam than the cylindrical rod pin. The method of claim 4, wherein
The rod pin is a corrosion prevention safety valve of the stainless pressure cooker, characterized in that one end is protruded to the outside or introduced into the pressure control unit due to the contraction and relaxation of the spring. The method of claim 1,
The housing is made of an insulator such as rubber as a whole or an insulator made of a part of the housing, and an insulator is formed between the outside of the fixing part which is in direct contact with the inside of the housing, and the direct contact with the hole of the lid. Safety valve for preventing corrosion of the stainless pressure cooker, characterized in that each made of an insulator in the insertion groove of the housing. The method of claim 1,
The cover is a safety valve for preventing corrosion of the stainless pressure cooker, characterized in that protruding to the surface of the lid due to the increased pressure inside the pressure cooker. The method of claim 1,
The valve body has one end portion formed with a through hole in a shape of a light beam bottom, and a locking groove is formed in an inward direction, and the cover has a locking projection protruding from a lower inner surface of the steam outlet, and the lower surface of the locking projection is inclined. The upper end of the upper and lower narrow shape of the valve body portion of the stainless steel pressure cooker characterized in that the locking groove of the valve body portion is caught by the locking jaw of the valve body portion while being elevated in the upper direction along the guide of the lower surface of the locking step formed obliquely of the cover; Anti-corrosion safety valve.

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