CN2484012Y

CN2484012Y - Safety pressure cooker

Info

Publication number: CN2484012Y
Application number: CN 01246024
Authority: CN
Inventors: 张其荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-06-17
Filing date: 2001-06-17
Publication date: 2002-04-03
Anticipated expiration: 2011-06-17

Abstract

The utility model relates to a safety pressure cooker, which comprises a pot body, a pot cover and a rubber seal ring; wherein, the connection of the pot body and the pot cover is equipped with a metal elastic ring; the metal elastic ring consists of a ring body, a retaining piece and an elastic device; the size of the retaining piece is close to the size of pot teeth; the retaining piece and the ring body are integrated into a whole. The connection between the pot body and the pot cover in the utility model is elastic, once the exhaust pipe of the pressure pot is blocked, the elastic device can be compressed by the high pressure in the pot, and the rubber seal ring is lost normal sealing role, thereby avoiding the explosion accidents caused by the high pressure produced by the pressure pot, and achieving the object of real safety and reliability.

Description

Safe pressure cooker

The utility model relates to a kind of pressure cooker, particularly a kind of pressure cooker with safety device.

Pressure cooker is a kind of widely used kitchen cooker, it since under higher boiling cooked food, can fuel saving and time, therefore the features good taste of food is subjected to liking of numerous users simultaneously.But, also owing to be cooked food under the state of high pressure, its safety problem particular importance that just seems.People have done various different improvement to its security in decades, to guarantee the safe handling of pressure cooker.Early stage pressure cooker is the method that pressure limiting valve and fuse sheet are set on its pot cover.Because of fuse sheet can not be reused and malfunctioning easily, so adopted safety valve to substitute fuse sheet afterwards.

In recent years, it is found that the explosion accident that is caused because of pressure cooker user improper use happens occasionally.Trace it to its cause: the person of being to use pot cover and pot body when fastening pot cover fasten not in place, and it is very little to fasten contact-making surface, blast when pot inner pressure exceeds the pressure that its contact area can bear; The 2nd, when also not eliminating fully, opens pot inner pressure pot cover by force, owing to also have very high pressure in the pot, and blast.But prior reason is a blast pipe stops up caused blast.Therefore, new pressure cooker standard pin is made stipulations to the problems referred to above: on the pressure cooker safety device must be arranged.

But, although being existing pressure cooker major part, present problem has above-mentioned safety measure, and the explosion accident of pressure cooker still continues to take place, and this has brought great potential safety hazard for the user of pressure cooker.The inventor finds through after a large amount of investigation: though the Anti-stop cover device is arranged, but since people in working pressure pot process food by behind the pressure limiting valve and safety valve of pressure cooker, in time do not clean, make food attached on the tube wall of blast pipe and withered, the long-term blast pipe that uses back build-up of pressure pot all stops up and loses degassing function.At present for solving technical scheme that this difficult problem proposed seldom, and structure is all quite complicated." spring compression type safety heat preservation pressure pot " as Chinese patent 94237793.1 propositions, its pot body is to put the outer pot cover by inner pan body to form, be plugged with insulation material between its interlayer, upset downwards of the edge of inner pan body top outer ring platform and riveted put at outer pot, are equipped with rubber seal on the ring-shaped platform in it.It is to utilize pot cover to be connected with the elasticity of pot between the body, realize the over-pressure self-discharging function of pressure cooker, but its structure is very complicated, and the material of product increases, and cost increases, and uses inconveniently, is difficult to obtain enforcement.

The purpose of this utility model is in order to overcome the problems referred to above, and a kind of simple in structure, safe and reliable, the safe pressure cooker that can realize the over-pressure self-discharging function is provided.

For achieving the above object, the utility model has adopted following technical proposal: the safety pressure cooker comprises pot body and pot cover, the sidepiece of pot body has lower handle, there is several pots tooth the upper edge of pot body, limited valve and upper handle on the pot cover, the edge of pot cover is provided with the lid tooth with the pot tooth equal number of pot body, and the junction of pot body and pot cover is provided with rubber seal.The feature of safety pressure cooker is that the junction of above-mentioned pot body and pot cover also is provided with the metallic elastic circle, the catch that this metallic elastic circle was advanced along the inside rollover of last and above-mentioned pot tooth equal number by the end of a columnar circle body, circle body and the elastic device of catch downside are formed, the size of catch is close with the pot tooth, catch and circle body are connected as a single entity, circle body is positioned at the outside of rubber seal, and catch and elastic device are between pot tooth and lid tooth.

Above-mentioned elastic device is generally spring leaf.

The utility model is to have set up a metallic elastic circle on common pressure cooker basis, utilizes elastic device in the metallic elastic circle to be arranged between pot tooth and the lid tooth, makes that elasticity is connected between pot body and the pot cover.Like this, in case clogging appears in the blast pipe of pressure cooker, can make the elastic device compression by the pot inner high voltage, produced the gap of using between pot body and the pot cover greater than normal, make rubber seal lose normal sealing function by this gap, make pressure cooker gas leakage and reach the purpose of pressure release.Obviously, this pressure cooker at any time all can avoid pressure cooker to produce too high pressure and the accident of blasting has reached real safe and reliable purpose.

Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof.

Fig. 1 is the partial cutaway schematic of safety pressure cooker.

Fig. 2 is the vertical view of metallic elastic circle in the safety pressure cooker.

Fig. 3 is local form's stereogram of metallic elastic circle in the safety pressure cooker.

Fig. 4 is the vertical view of pot cover in the safety pressure cooker.

As shown in Figure 1, the safety pressure cooker is the improvement of being done on usual pressure pot basis, and it is made up of pot body 1, pot cover 2, rubber seal 4 and metallic elastic circle 3.The sidepiece lower handle 11 that is being connected of pot body 1, the upper edge of pot body 1 be a pot tooth 10.Upper handle 21 and pressure limiting valve 22 are arranged on the pot cover 2.Upper handle 21 is connected on the pot cover 2, and the edge of pot cover 2 is the lid tooth 20 with pot tooth 10 equal numbers.In the present embodiment, pot tooth 10 has six, and correspondingly covering tooth 20 also has six.The rubber seal 4 of safety pressure cooker can adopt common shape.

As shown in Figures 2 and 3, metallic elastic circle 3 of the present utility model is made up of circle body 30, catch 31, elastic device and elbow 33.Circle body 30 is cylindric, and its internal diameter is slightly larger than the external diameter of rubber seal 4.Catch 31 is arranged at the edge, the end of circle body 30, is connected as a single entity with circle body 30.In the present embodiment, the quantity of catch 31 also is six, evenly distributes, and undersized is in lid tooth 20.Above-mentioned elastic device is a spring leaf 32, and spring leaf 32 is connected as a single entity with catch 31.The downside of each catch 31 all has spring leaf 32.In addition, described elastic device also can adopt the spring that separates with catch 31.It is that material is made that the metallic elastic circle 3 of present embodiment adopts steel.

As shown in Figure 1, pot cover 2 edge sizes of the present utility model are greater than the pot cover edge size of usual pressure pot, and the catch 31 of metallic elastic circle 3 and spring leaf 32 are between pot tooth 10 and lid tooth 20.When pressure cooker normally used, rubber seal 4 was between pot body 1 upper edge and the pot cover 2, and was clamped by them, guaranteed that pressure cooker in use seals the contact position of pot cover 2 and pot body 1 fully.The gas that is produced in the pot in the use discharges behind pressure limiting valve 22 by the blast pipe on the pot cover 2 23.In the safe pressure scope of pressure cooker, spring leaf 32 distortion of metallic elastic circle 3 seldom can guarantee that rubber seal 4 seals.In case abnormal conditions appear in pressure cooker, by after obstruction is lived fully, the pressure in the pressure cooker will rise, and surpasses the scope of safe pressure as blast pipe 23.At this moment, the pressure that acts on the pot cover 2 will be oppressed at the spring leaf 32 that covers the metallic elastic circle 3 between tooth 20 and the pot tooth 10, make its compression, thereby pot cover 2 rise.Because the gap after pot cover 2 rises between pot cover 2 and the pot body 1 becomes big, rubber seal 4 does not just have sealing function, and the interior gases at high pressure of pot will let out between pot body 1 and pot cover 2, makes the pressure cooker decompression and avoids the accident of blasting.

As shown in Figures 2 and 3, the upper edge of metallic elastic circle 3 also is provided with several elbows 33, and elbow 33 is buckled on the rubber seal 4.The effect of elbow 33 is to make rubber seal 4 location, and promptly when pressure cooker appearance obstruction was risen pot cover 2, rubber seal 4 was motionless relatively, was convenient to pressure cooker and lost heart.

As shown in Figure 4, in the present embodiment, the edge upper surface of pot cover 2 is provided with several ventholes 24.In spring leaf 32 distortion that metallic elastic circle 3 occurs, when pot cover 2 rises, the gases at high pressure in the pot can be discharged from these ventholes 24.Because when occur stopping up, producing in the pot situation of excess pressure at pressure cooker and taking place, pressure cooker is in heated condition, the bottom of pressure cooker has fuel such as coal gas burning.If aqueous vapor sprays from the gap of pot tooth 10 and lid tooth 20 in the pressure cooker pressure leak process, because its direction, might cause fray-out of flame down, and the danger that causes fuel to leak.Therefore, these ventholes 24 in the upper surface setting of the edge of pot cover 2 play the effect that this situation takes place of stopping.

Compared with prior art, the safe pressure cooker that provides of the utility model has following advantages:

1, in the safety pressure cooker, is provided with the metallic elastic circle between pot body and the pot cover, makes Its elasticity connects, and has so just thoroughly solved present pressure cooker and has occurred when blast pipe stops up Difficult problem that can't pressure release during high pressure prevents the pressure cooker blast, makes really safety of pressure cooker Use.

2, the safety pressure cooker structurally only increases a metallic elastic circle, and structure is letter Single, the safety valve that the while pressure cooker covers also can omit, so not raising of product cost, Implement also to be easy to, have higher practical value.

Claims

1, a kind of safe pressure cooker, comprise a pot body (1) and pot cover (2), the sidepiece of pot body (1) has lower handle (11), there is several pots tooth (10) upper edge of pot body (1), pot cover (2) is gone up limited valve (22) and upper handle (21), the edge of pot cover (2) is provided with the lid tooth (20) with pot tooth (10) equal number of pot body (1), pot body (1) is provided with rubber seal (4) with the junction of pot cover (2), it is characterized in that the described pot body (1) and the junction of pot cover (2) also are provided with metallic elastic circle (3), this metallic elastic circle (3) is by a columnar circle body (30), the catch (31) that the end of circle body (30) is advanced along inside rollover last and above-mentioned pot tooth (10) equal number and the elastic device of catch (31) downside are formed, the size of catch (31) is close with pot tooth (10), catch (31) is connected as a single entity with circle body (30), circle body (30) is positioned at the outside of rubber seal (4), and catch (31) and elastic device are positioned between a pot tooth (10) and the lid tooth (20).

2, safe pressure cooker according to claim 1 is characterized in that described elastic device is spring leaf (32).

3, safe pressure cooker according to claim 2 is characterized in that described spring leaf (32) and catch (31) are connected as a single entity.

4, safe pressure cooker according to claim 1 is characterized in that described elastic device adopts the spring that separates with catch (31).

5, according to claim 1,2,3 or 4 described safe pressure cookers, it is characterized in that the upper edge of described metallic elastic circle (3) is provided with several elbows (33), elbow (33) is buckled on the rubber seal (4).

6,, it is characterized in that the edge upper surface of described pot cover (2) is provided with several ventholes (24) according to claim 1,2,3 or 4 described safe pressure cookers.