CN202553521U - Pressure relief structure of pressure cooking utensil - Google Patents

Abstract

The utility model relates to a pressure relief structure of a pressure cooking utensil. The pressure cooking utensil comprises an inner boiler and a boiler cover which are rigidly buckled together to form a cooking cavity, a pressure relief valve is arranged on the boiler cover, an air inlet hole communicated with the cooking cavity is arranged on the lower end of the pressure relief valve, an exhaust hole communicated with the outside is arranged on the upper end of the pressure relief valve, a valve core cavity for communicating the air inlet hole with the exhaust hole is arranged in the pressure relief valve, and a valve core capable of elastically closing the air inlet hole is flexibly arranged in the valve core cavity. A spring or an elastic slice is arranged between the valve core and the valve core cavity. The valve core is a spherical valve or a piston valve. A release link is connected with the valve core, and the spring or the elastic slice is arranged between the valve core and the release link. During the normal use of the pressure cooking utensil, the air inlet hole of the pressure relief valve is closed by the valve core, and the energy consumption during the cooking process is reduced and when relatively large pressure is generated in the pressure cooking utensil, the valve core is pushed to relieve the pressure, the hidden safety trouble is effectively eliminated and the safe and reliable use of the pressure cooking utensil is ensured.

Description

The pressure relief of pressure cooking appliance

Technical field

The utility model relates to a kind of pressure cooking appliance, specifically is a kind of pressure relief of pressure cooking appliance.

Background technology

At present, generally has pressure control switch in the outer pot of the electric pressure cooking appliance of people's use.A kind of electric pressure cooking appliance was disclosed on June 27th, 2007 like Chinese patent document number CN2914931; Comprise a pot body, outer pot, interior pot, pot cover, heat-generating disc, but pot cover and outer pot or pot body rigidity are fastened on one, are provided with sealing ring between pot cover and interior pot; Interior pot places on the heat-generating disc; Heat-generating disc is installed on the elastomer of outer pot bottom, is equiped with gauge tap on heat-generating disc or the elastomer, and corresponding gauge tap position is provided with catch bar on the outer pot; Wherein be equiped with touch part on heat-generating disc or elastomer or the gauge tap, be equiped with the cut-off switch that when gauge tap lost efficacy, can contact on outer pot or the catch bar with touch part.The assembly structure of this structure control switch and cut-off switch is comparatively complicated, and fault rate is higher.Therefore, need further to improve.

The utility model content

The purpose of the utility model aims to provide the pressure relief of a kind of simplicity of design, rational in infrastructure, pressure cooking appliance that cost of manufacture is low, safe and reliable, to overcome weak point of the prior art.

Press the pressure relief of a kind of pressure cooking appliance of this purpose design; Said pressure cooking appliance comprises that rigidity is fastened on the interior pot and the pot cover of one, and both form cooking cavity, and pot cover is provided with relief valve; Its architectural feature is that the lower end of relief valve is provided with the air admission hole that is communicated with cooking cavity; The upper end is provided with the steam vent that is in communication with the outside, and set inside has the spool chamber that is communicated with two pores, but is movably set with the spool of enclosed elastic air admission hole in the spool chamber.

Be provided with spring or shell fragment between said spool and the spool chamber.

Said spool is globe valve or piston valve.

Also be connected with release link on the said spool, said spring or shell fragment are arranged between the two.

The pressure cooking appliance of the utility model is when normal the use, and spool seals the air admission hole of relief valve, can reduce the energy consumption of its cooking process; When producing big pressure in the pressure cooking appliance; The spool pressure release that is open effectively eliminates safe hidden trouble, and guarantees that it is safe and reliable.The utlity model has simplicity of design, rational in infrastructure, characteristics that cost of manufacture is low, safe and reliable.

Description of drawings

Fig. 1 is the assembly structure sketch map of the utility model one embodiment.

Fig. 2 is the pressure release state reference map of an embodiment.

Fig. 3 is the assembly structure sketch map of the another embodiment of the utility model.

Fig. 4 is the pressure release state reference map of another embodiment.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

First embodiment

Referring to Fig. 1-Fig. 2, the pressure relief of this pressure cooking appliance, said pressure cooking appliance comprise that rigidity is fastened on interior pot (not marking among the figure) and thepot cover 1 of one; Both form cooking cavity;Pot cover 1 is provided withrelief valve 2, and the lower end of itsrelief valve 2 is provided with the air admission hole 2.1 that is communicated with cooking cavity, and the upper end is provided with the steam vent 2.2 that is in communication with the outside; Set inside has the spool chamber 2.9 that is communicated with two pores, but is movably set with the spool of enclosed elastic air admission hole 2.1 in the spool chamber 2.9.

Be provided with spring 2.5 between spool and the spool chamber 2.9, wherein, spool is a globe valve 2.3.Pressure cooking appliance (being pressure cooker or electric pressure cooking saucepan) is when normal the use, and globe valve 2.3 seals air admission hole 2.1 under the effect of spring 2.5.When pressure cooking appliance is inner when producing big pressure (food cooking it in finishes), globe valve 2.3 is backed down, and gas gets into from air admission hole 2.1, again from steam vent 2.2 discharges, reaches the purpose of pressure release.This is simple in structure, cost of manufacture is low.

Above-mentioned spring 2.5 can use shell fragment (not marking among the figure) to replace, because resetting of shell fragment need be by external force, so globe valve 2.3 also need be connected with a release link (not marking among the figure), and shell fragment places between the two.

After 2 pressure releases of this relief valve;, the pressure of cooking cavity can not automatically reset after descending; As shown in the figure; During pressure release, support chip is not compressed and is supported on air admission hole 2.1 opening parts support chip (unlabelled among the figure)relief valve 2 that globe valve 2.3 also is connected with elastically deformable, simultaneously globe valve 2.3 sealing air admission holes 2.1.Afterrelief valve 2 pressure releases, globe valve 2.3 is by jack-up, and support chip is opened and be stuck in the top of air admission hole 2.1 opening parts.When theserelief valve 2 pressure releases need reset later, need manually to takerelief valve 2 apart, also be supported on air admission hole 2.1 opening parts again, and then assemble relief valve to the support chip compression.Though its step that resets is more relatively, it adopts the non-automatic design that resets, and ensures the safe in utilization of pressure cooking appliance better.

Second embodiment

Referring to Fig. 3-Fig. 4, the pressure relief of this pressure cooking appliance, the main distinction of itself and first embodiment is that spool is a piston valve 2.4.Be provided with shell fragment 2.6 between piston valve 2.4 and the spool chamber 2.9, also be connected with release link 2.7 on the piston valve 2.4, said shell fragment 2.7 is arranged between the two.Pressure cooking appliance (being pressure cooker or electric pressure cooking saucepan) is when normal the use, and globe valve 2.3 seals air admission hole 2.1 under the effect of shell fragment 2.6.When pressure cooking appliance is inner when producing big pressure (food cooking it in finishes), globe valve 2.3 is backed down, and gas gets into from air admission hole 2.1, discharges from steam vent 2.2 again, reaches the purpose of pressure release, shell fragment 2.6 generation elastic deformations this moment.Close relief valve 2 and make it to reset, need manually press release link 2.7, shell fragment 2.6 elastic recoveries are got final product, its relative first embodiment, reset process is comparatively simple.

Other do not state part, with first embodiment, no longer repeat.

Claims (4)

1. the pressure relief of a pressure cooking appliance; Said pressure cooking appliance comprises that rigidity is fastened on the interior pot and the pot cover (1) of one; Both form cooking cavity; Pot cover (1) is provided with relief valve (2), it is characterized in that the lower end of relief valve (2) is provided with the air admission hole (2.1) that is communicated with cooking cavity, and the upper end is provided with the steam vent (2.2) that is in communication with the outside; Set inside has the spool chamber (2.9) that is communicated with two pores, spool chamber (2.9) but in be movably set with the spool of enclosed elastic air admission hole (2.1).

2. according to the pressure relief of the said pressure cooking appliance of claim 1, it is characterized in that being provided with between said spool and the spool chamber (2.9) spring (2.5) or shell fragment (2.6).

3. according to the pressure relief of the said pressure cooking appliance of claim 2, it is characterized in that said spool is globe valve (2.3) or piston valve (2.4)

4. according to the pressure relief of the said pressure cooking appliance of claim 3, it is characterized in that also being connected with release link (2.7) on the said spool, said spring or shell fragment are arranged between the two.

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