CN1132619A - Insulating cooking pot - Google Patents

Abstract

This heat-insulated cooking pot 1 is provided with a heat insulating outer container 2, an inner pot 3, and a heat insulating outer cover 5 it suppresses the heat loss due to the convection of an air layer in an outer container and improve the heat retaining force and the outer container 2 and the inner side face is adjusted to 7mm or below.

Description

Insulating cooking pot

The present invention relates to insulating cooking pot, particularly relate to insulating cooking pot by heat insulation outer container and the culinary interior pot of heat loss of forming, when interior pot is packed outer container into, can suppressing to cause because of the cross-ventilation in this outer container.

So-called insulating cooking pot in the past nearly all is to make when the power saving in the gastronomical process is retained as purpose and with thermal source it with heat insulation on every side, seldom can cut off thermal source.The insulating cooking pot that does not have thermal source is also just in development process, it is according to such viewpoint, promptly, if the heat-insulated container with vacuum interlayer wall construction and heat-barrier material wall construction as outer container etc. and fully suppress the heat loss that spreads out of from interior pot, the cooking such as is boiled even then also can stew under the state that cuts off thermal source.

Do not have thermal source insulating cooking pot an example as shown in Figure 3.Among Fig. 3, this insulating cooking pot 30 be provided with basically the vacuum interlayer wall construction thermal insulation outer container 31, can be contained in interior pot 32 in this outer container 31 with freely picking and placeing, be contained in above the pot inner cap 33 and seal the heat insulation enclosing cover 34 of the opening of outer container 31 under interior pot 32 states of packing into.

If with this insulating cooking pot 30, interior pot 32 is being taken out and is putting into material for cooking, cover inner cap or do not cover inner cap 33, by external heat source from the bottom and/or the side heat, after being heated to cook temperature, under the state that covers inner cap 33, it is contained in the outer container 31, and covers enclosing cover 34, scatter and disappear outside outer container 31 owing to prevented heat, so can not have the cooking proceeded under the situation of external heat source.

In this insulating cooking pot in the past, in order easily interior pot 32 to be taken out from outer container 31 and to put into, need be housed in the handle 35 on the top, side of pot 32 in being attached in the outer container 31, therefore, the gap delta between the side 37 of the side 36 of interior pot 32 and outer container is separated for example more than the 20mm.But, because this gap is an air layer, thereby can produce convection current, the heat loss by enclosing cover 34 is strengthened, thereby the situation of sufficient insulating cooking can occur carrying out.

The present invention makes in order to address the above problem, and its objective is provides the insulating cooking pot that can fully suppress the heat loss of outer container inboard and have superior insulating cooking performance.

The insulating cooking pot of the present invention of making to achieve the above object has heat insulation outer container, can pick and place the interior pot that is contained in freely in this outer container, cover in this inner cap on pot and in accommodating this under state of pot with the heat insulation enclosing cover of the closure of openings of above-mentioned outer container, and the side clearance between the medial surface of the lateral surface of pot in this and outer container is taken at below the 7mm.Heat insulation outer container preferably has vacuum interlayer wall construction or heat-barrier material wall construction.

The both sides of upper periphery edge that are preferably in the interior pot of this insulating cooking pot are being adorned and can loads and unloads with the junction surface of the peristome outer peripheral edges of outer container and to be bonded together freely (pot remaining in the outer container in making by this joint) with dangling and making above-mentioned side clearance remain on interior pot handle below the 7mm.

Preferably be provided with restraint device, it is when the folding and unfolding of interior pot in outer container the time, and the bottom of pot and the interior end of outer container are not limited in contact in making, and the preferably above-mentioned interior pot handle of this restraint device.

Suppress cross-ventilation in this gap and the bottom gap to get off by the side clearance between interior pot and the outer container being taken at 7mm, thereby can improve heat-insulating property.

Fig. 1 is the sectional view of an embodiment of expression insulating cooking pot of the present invention.

Fig. 2 is the curve map of the expression result of the test relevant with the heat-insulating property of insulating cooking pot.

Fig. 3 is the sectional view of an example of the existing insulating cooking pot of performance.

Below, with reference to accompanying drawing embodiments of the invention are described.

Fig. 1 shows a most preferred embodiment of insulating cooking of the present invention.

In Fig. 1, this insulating cooking pot 1 have heat insulation outer container 2, can freely take out or be contained in with putting into this outer container 2 pots 3, cover in this inner cap 4 on pots 3, the heat insulation enclosing cover 5 of under the state of this pot of packing into, the closure of openings of outer container 2 being lived.

This outer container 2 is made of heat-insulated container 10 and the bottom member 11 that is formed by synthetic resin etc. that is contained in its bottom, to be the inner core that the round-ended cylinder shape is arranged 6 that will be made of metals such as stainless steel, glass or synthetic resin etc. and diameter be bonded into one than each oral area of its big slightly urceolus 7 with heat-insulated container 10, simultaneously, the air between the inner/ outer tube 6,7 is discharged again good seal, formation vacuum interlayer wall construction from base bleed hole 8; Perhaps, after using heat-barrier material fillings such as foaming polyurethane resin and foaming GPPS resin in the space of interlayer wall construction, form the heat-barrier material wall construction.In addition, the outer container handle 12 with formation such as synthetic resin is loaded onto near the both sides of the lateral surface the opening of heat-insulated container 10.

For the purpose of explanation, be heat-insulated container 10 to be made the vacuum heat-insulation container illustrate below, but also be what equally to be fit to heat-insulated containers such as heat-barrier material wall constructions.

At the peristome of this outer container 2, but by the hinge freely openable adorning enclosing cover 5.The central portion of this enclosing cover 5 is hollow cylindrical, heat-barrier materials such as inner filling foaming polyurethane resin and foaming GPPS resin.

The pot handles 15 that interior pot 3 will be installed by the both sides of interior pot body 14 that the round-ended cylinder shape is arranged that uses as cooker and near the lateral surface its opening constitute.Writing board shape is processed in the bottom of the interior pot body of using as cooker 14, makes it be placed on the stove easily and make it to have the good thermal efficiency.Opening part at interior pot body 14 is being placed the inner cap 4 that central portion has inner cap handle 18.

The handle portion 16 that pot handle 15 is extended upward by the fixed part from interior pot body 14 lateral surfaces and form from the outward extending handle portion 17 of its front end.This pot handle 15 pot 3 o'clock in putting into, handle portion 17 can load and unload with the junction surface of outer container handle 12 in the outer peripheral edges portion of enclosing cover 5 and be bonded together freely and heat insulationly.In addition, the length of handle portion 16 can be regulated, and interior in view of the above pot body 14 is held in the mutual discontiguous overhang in the interior end that makes its bottom and outer container inner core 6.

When this pot handle 15 keeps interior pot body 14 with dangling, the gap delta (side clearance) of the medial surface 20 of the inner core 6 of the lateral surface 19 of interior pot of body 14 and vacuum heat-insulation container 10 is adjusted to below the 7mm.

The adjustment of this side clearance δ is to be undertaken by the external diameter by the interior pot body 14 of selected internal diameter with respect to vacuum heat-insulation container 10 basically, but keeping of this interval then is by being undertaken by the maintenance of interior pot of definite body 14 of above-mentioned pot handle 15.

Though, be taken at 7mm with the cross-ventilation in its clearance portion of inhibition of getting off by the side clearance δ that makes interior pot-outer container, thereby improve insulating power significantly.That is to say, behind the pot body 14, put outer container 2 (vacuum heat-insulation container 10) again in warmed-up insulation thing is packed into, the insulation thing is placed near the bottom face in the vacuum heat-insulation container 10.Therefore, make the lower heating in the vacuum heat-insulation container 10, the air-flow that has been heated in this section rises to the direction of the enclosing cover 5 of outer container 2 along the side clearance δ between interior pot body 14 and the vacuum heat-insulation container 10.Can produce such air-flow when side clearance δ surpasses 7mm rises.Though the side wall portion of outer container 2 is owing to vacuum heat-insulation or because be furnished with enough thick heat-barrier material, thereby it is lost seldom to the heat of outside, but, enclosing cover 5 is more a bit weaker than the thermal insulation of side wall portion, the just gathering below enclosing cover 5 of air-flow that rising comes, by the chimeric gap heat release of enclosing cover 5, thereby increase heat loss.

As long as reached interior pot 3 degree that can pick and place easily, the lower limit of side gap delta is not limited especially, still, consider when picking and placeing smoothly, pot 3 is heated under the state of expansion in being preferably in, gap delta is more than the 0.5mm.

Below, the test example is described.

With the same insulating cooking pot shown in Figure 1 in, the shape of thermal insulation outer container 2 is got necessarily, only internally the external diameter of pot body 14 is made many variations, by make its with the inwall 20 of outer container 2 between the interval making insulating cooking pot respectively of the side clearance δ that produces with changing.Central portion fixed temperature sensor of interior end of pot in each is drawing lead-in wire and receiving on the moisture recorder of outside under situation that does not produce heat loss.

The internal diameter of the vacuum heat-insulation container 10 of used outer container is 220mm, and effective depth is 200mm.

Pot was 3 li in boiling water 500ml poured into, placed immediately in the outer container 2 after covering inner cap 4, covered enclosing cover 5, was placed under the room temperature environment.

Temperature in interior pot 3 becomes moment of 95 ℃ and begins to measure, and changes side clearance δ, measure after 6 hours the temperature A that reached (℃), and the amount of thermal conduction 13 (Kcal/m.h. ℃) that causes by convection current in mensuration the heat loss that the temperature that reaches is exerted an influence.

Fig. 2 shows measurement result.

Can find out that by this curve map in side clearance δ was zone below the 7mm, heat insulation effect is proportional ground liter with the increase of side clearance δ.But when side clearance δ surpassed 7mm, heat insulation effect stopped to rise, and heat insulation effect is the trend of minimizing on the contrary when further increasing side clearance δ again.This measurement result and the amount of thermal conduction B that begins to cause because of convection current when the 7mm as side clearance δ this fact that evenly rises is corresponding.Promptly demonstrate, can suppress the heat loss that causes because of convection current below the 7mm by side clearance δ is taken at.

By the result of Fig. 2 as can be known, the side gap delta is taken at the insulating cooking pot of the embodiment below the 7mm, can suppresses heat loss significantly, make apyrogenic insulating cooking pot and have very high practicality.

Insulating cooking pot of the present invention, because the heat insulation outer container with vacuum interlayer wall construction is got into below the 7mm with the side clearance of interior pot, so suppressed the heat loss that causes by the cross-ventilation of outer container inside, make apyrogenic insulating cooking pot and have good heat-insulating property, thereby have very high practical value.

Claims (6)

1. insulating cooking pot, it has heat insulation outer container, can pick and place the interior pot that is contained in freely in this outer container, cover in this inner cap on pot and in accommodating this under state of pot with the heat insulation enclosing cover of the closure of openings of above-mentioned outer container, it is characterized in that, the side clearance between the medial surface of the lateral surface of pot in this and outer container is taken at below the 7mm.

2. insulating cooking pot as claimed in claim 1 is characterized in that, above-mentioned heat insulation outer container has the vacuum interlayer wall construction.

3. insulating cooking pot as claimed in claim 1 is characterized in that, above-mentioned heat insulation outer container has the heat-barrier material wall construction.

4. as any described insulating cooking pot in the claim 1～3, it is characterized in that the both sides of the upper periphery edge of interior pot are being adorned and can loads and unloads with the junction surface of the peristome outer peripheral edges of outer container and to be bonded together freely (pot remaining in the outer container in making by this joint) with dangling and making above-mentioned side clearance remain on interior pot handle below the 7mm.

5. as any described insulating cooking pot in the claim 1～4, it is characterized in that, be provided with restraint device, it is when the folding and unfolding of interior pot in outer container the time, and the interior end of itself and outer container is not limited in contact.

6. insulating cooking pot as claimed in claim 5 is characterized in that, above-mentioned restraint device is interior pot handle.

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