CN212089159U - Pan and cooking device - Google Patents
Pan and cooking device Download PDFInfo
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- CN212089159U CN212089159U CN201922502112.8U CN201922502112U CN212089159U CN 212089159 U CN212089159 U CN 212089159U CN 201922502112 U CN201922502112 U CN 201922502112U CN 212089159 U CN212089159 U CN 212089159U
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Abstract
The utility model relates to a domestic appliance field discloses a pan and cooking device, and the pan is double-deck pan and includes interior pot and outer pot, is formed with inclosed intermediate layer chamber between interior pot and the outer pot, and the intermediate layer intracavity holds has liquid phase transition working medium, is equipped with outer porous layer on the lateral wall in intermediate layer chamber, and outer porous layer is including setting up the outer porous layer in bottom on the top surface of the outer pot diapire of outer pot and setting up on the outer pot internal perisporium of outer pot and the outer porous layer of circumference of being connected with the outer porous layer in bottom. The interlayer cavity comprises a circumferential interlayer cavity formed between the circumferential wall of the inner pot and the circumferential wall of the outer pot, and a circumferential overflowing flow channel is formed between the circumferential outer porous layer and the inner side wall of the circumferential interlayer cavity. The utility model provides a pan and culinary art device are rational in infrastructure, have higher heat transfer rate, are favorable to improving the heating rate of eating the material, promote culinary art effect and give the better culinary art of user and experience.
Description
Technical Field
The utility model belongs to the domestic appliance field specifically, relates to a pan and cooking device.
Background
With the continuous progress of science and technology and the continuous improvement of the living standard of people, cooking devices (such as electric cookers or electric pressure cookers) capable of cooking food materials are increasingly popularized. Wherein, for making the pan in the cooking device can be heated evenly to avoid gluing the pot or the situation of scorching because of the local too much that is heated, set up the pan into double-deck pan and load liquid phase transition working medium in the intermediate layer chamber between inside and outside pot.
In current double-deck pan, owing to be equipped with liquid phase transition working medium at the intermediate layer intracavity, cause outer pot to be heated the back with heat conduction to liquid phase transition working medium so that it is heated the vaporization earlier, and the liquid phase transition working medium of back gaseous state contacts with interior pot in order to transmit the heat to interior pot, interior pot is heated the intensification and cooks with eating the material of eating in to the pot, can make the heat transfer efficiency of pan lower like this, cause the rate of heating of eating the material slower, and then influence user's culinary art and experience.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned not enough or defect among the prior art, the utility model provides a pan and cooking device, this pan is rational in infrastructure, has higher heat transfer rate, is favorable to improving the heating rate of eating the material, promotes the culinary art effect and gives the better culinary art of user and experience.
In order to realize the above-mentioned purpose, the utility model provides a cooker, the cooker is double-deck cooker and includes interior pot and outer pot, interior pot with be formed with inclosed intermediate layer chamber between the outer pot, the intermediate layer intracavity holds has liquid phase transition working medium, be equipped with outer porous layer on the lateral wall in intermediate layer chamber, outer porous layer including set up in the outer porous layer of bottom on the top surface of the outer pot diapire of outer pot with set up in on the outer pot internal perisporium of outer pot and with the outer porous layer of circumference that connects of bottom.
Optionally, the inner peripheral wall of the outer pan and the top surface of the bottom wall of the outer pan may be completely covered with the outer porous layer;
alternatively, the circumferential outer porous layer is formed as a plurality of vertical outer porous layers extending radially from the outer peripheral edge of the bottom outer porous layer toward the top end of the inner peripheral wall of the outer pan.
Further, the interlayer cavity may include a circumferential interlayer cavity formed between a circumferential wall of the inner pot and a circumferential wall of the outer pot, and a circumferential overflow flow passage is formed between the circumferential outer porous layer and an inner side wall of the circumferential interlayer cavity.
Still further, the interlayer cavity may include a bottom interlayer cavity sandwiched between the bottom wall of the inner pot and the bottom wall of the outer pot, and a bottom overflow flow passage is formed between the bottom outer porous layer and the inner side wall of the bottom interlayer cavity.
Optionally, in an axially upward direction of the pot, the circumferential overflow channel may be a channel with an equal radial width or a channel with a gradually narrowed radial width;
and/or, the bottom overflowing flow channel can be an axial width flow channel or an axial width gradually-widened flow channel along the radial outward direction from the center of the pot.
Optionally, the radial width of the circumferential flow channel and/or the axial width of the bottom flow channel may be not less than 0.5mm and not more than 8 mm;
and/or the axial distance between the top end of the circumferential outer porous layer and the top end of the interlayer cavity is D1, the axial height of the cookware is D, and the following conditions can be met:
optionally, an inner porous layer can be arranged on the inner side wall of the interlayer cavity, and the inner porous layer at least comprises a bottom inner porous layer arranged on the bottom surface of the bottom wall of the inner pot.
Further, the inner porous layer can also comprise a circumferential inner porous layer which is arranged on the outer circumferential wall of the inner pot and is connected with the inner porous layer at the bottom;
alternatively, the inner porous layer may be entirely covered on the outer peripheral wall of the inner pot and on the bottom surface of the bottom wall of the inner pot.
Still further, the axial spacing between the tip of the circumferential inner porous layer and the tip of the interlayer cavity (Q) is d2 and d2 may satisfy:
alternatively, the thickness of the inner porous layer and/or the outer porous layer may be not less than 0.1mm and not more than 1 mm;
and/or the interlayer cavity may be a vacuum cavity.
Optionally, the liquid phase-change working medium can be water, an ethanol water solution or an ether water solution;
and/or the ratio of the volume of the liquid phase change working medium to the volume of the interlayer cavity can be not less than 0.1 and not more than 0.5.
In some embodiments, the inner porous layer and/or the outer porous layer may be a metal porous layer, a ceramic porous layer, or a plastic porous layer;
wherein the porosity of the inner porous layer and/or the outer porous layer may be 10% to 80%, and the average pore cross-sectional area of the inner porous layer and/or the outer porous layer is not less than 0.2mm2 and not more than 1mm 2.
Optionally, the inner porous layer may have compatibility with the pot wall of the inner pot and/or the outer porous layer may have compatibility with the pot wall of the outer pot;
and/or, the inner porous layer and/or the outer porous layer may be at least one of a porous structure sintered from metal powder and a porous structure stacked from metal mesh.
Correspondingly, the utility model also provides a cooking device, cooking device includes foretell pan.
Optionally, the cooking device may further comprise a heating element for heating the outer pot, the minimum height of the top end of the circumferential outer porous layer being greater than the maximum height of the heating element.
In the utility model, the interlayer cavity clamped between the outer pot and the inner pot is loaded with the liquid phase-change working medium, and the outer lateral wall of the interlayer cavity is also provided with an outer porous layer, the outer porous layer comprises a bottom outer porous layer and a circumferential outer porous layer, the bottom outer porous layer is arranged on the top surface of the bottom wall of the outer pot, the circumferential outer porous layer is arranged on the inner peripheral wall of the outer pot and is connected with the bottom outer porous layer, thus the arrangement is realized, because the outer porous layer has larger specific surface area, the heat transfer speed can be accelerated, the bottom outer porous layer can promote the liquid phase-change working medium to be quickly evaporated into the gaseous phase-change working medium on the bottom outer porous layer, the circumferential outer porous layer can promote the gaseous phase-change working medium to be quickly condensed on the circumferential outer porous layer into the liquid phase-change working medium, and the circumferential outer porous layer is connected with the bottom outer porous layer, the liquid, thereby in time to constantly evaporating the liquid phase transition working medium after the outer pot bottom supplementary condensation of phase transition working medium for the gas-liquid phase transition circulation rate of phase transition working medium ensures the vapor-liquid phase virtuous circle of phase transition working medium in the intermediate layer intracavity, and then effectively improves the heat transfer rate of pan and improves the heating rate of eating the material, is favorable to promoting user's use by a wide margin and experiences.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is an overall sectional view of a pot according to a first alternative embodiment of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
fig. 3 is an overall sectional view of a pot according to a second alternative embodiment of the present invention;
FIG. 4 is an enlarged view of portion B of FIG. 3;
fig. 5 is an enlarged view of a portion C in fig. 3.
Description of reference numerals:
1 inner pot and 2 outer pot
11 inner porous layer 21 outer porous layer
L liquid phase change working medium Q interlayer cavity
Q1 circumferential interlayer cavity Q2 bottom interlayer cavity
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the present invention, unless otherwise specified, the use of directional terms such as "upper, lower, top, bottom" and "upper" are generally used with respect to the orientation shown in the drawings or the positional relationship of the components with respect to each other in the vertical, vertical or gravitational direction.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The utility model discloses at first provide a pan, refer to fig. 1 and fig. 3, the pan is double-deck pan and includes interior pot 1 and outer pot 2, be formed with inclosed intermediate layer chamber Q between interior pot 1 and the outer pot 2, wherein, it has liquid phase transition working medium L to accommodate in the intermediate layer chamber Q, be equipped with outer porous layer 21 on the lateral wall of intermediate layer chamber Q, outer porous layer 21 includes the outer porous layer in bottom and circumference, the outer porous layer in bottom sets up on the top surface of the outer pot diapire of outer pot 2, the outer porous layer in circumference sets up on the outer pot internal perisporium of outer pot 2 and is connected with the outer porous layer in bottom.
The utility model discloses the correspondence still provides a cooking device, and this cooking device includes the pan. In particular, the cooking device further comprises a heating element for heating the outer pot 2 within the pot, and generally the heating element heats the bottom of the outer pot 2. Wherein, the heating element can be selected from an electric heating tube, an electric heating film, a PTC heating sheet or an electromagnetic induction heating coil. In addition, cooking device can be for electric rice cooker, also can be for cooking device that electric pressure cooker etc. were used for cooking the edible material, the utility model discloses be not limited to this.
In the utility model, the liquid phase-change working medium L is loaded in the closed interlayer cavity Q between the inner pot 1 and the outer pot 2, and the outer porous layer 21 is arranged on the outer side wall of the interlayer cavity Q, thus, the heat transfer speed can be accelerated because the outer porous layer 21 has larger specific surface area, the heating element heats the liquid phase-change working medium L ceaselessly through the outer pot 2, the outer porous layer at the bottom can promote the liquid phase-change working medium to be quickly evaporated into the gaseous phase-change working medium on the outer porous layer at the bottom, the bottom of the outer pot 2 can be in a liquid-losing state, and the outer porous layer at the periphery can promote the gaseous phase-change working medium L to be quickly condensed into the liquid phase-change working medium L on the outer porous layer at the periphery, then the liquid phase-change working medium L after condensation can flow back to the bottom of the outer pot 2 under the action of gravity, thus, the speed of supplementing the liquid phase-change working medium, thereby prevent to appear failing in time to produce gaseous phase transition working medium L's the situation because interlayer chamber Q bottom lacks liquid phase transition working medium L, and then ensure the vapor-liquid phase virtuous circle of liquid phase transition working medium L in interlayer chamber Q, be favorable to avoiding producing adverse effect to the heat transfer efficiency of pan to can effectively improve the heat transfer efficiency of pan, and then improve the heating rate who eats the material, be favorable to promoting user's use by a wide margin and experience.
The heights of the top ends of the circumferential outer porous layers at different positions can be different, optionally, the minimum height of the top ends of the circumferential outer porous layers can be larger than the maximum height of the heating element, so that the circumferential outer porous layers with the surplus liquid phase change working medium L can timely absorb heat generated by the heating element, and can quickly vaporize into the gaseous phase change working medium L to transfer heat to the inner pot 1, and the heat transfer efficiency of the pot is effectively improved. In addition, the outer porous layer can timely transmit heat generated by the heating element, and the heating element can be prevented from being damaged due to poor heat transmission of the cookware.
The liquid phase-change working medium L can be water, an ethanol aqueous solution or an ether aqueous solution and the like, so that the pot is favorable for a user to safely and hygienically cook food materials, and the boiling point of water is higher, so that the heating rate of the food materials is more favorable for being improved. In addition, the ratio of the volume of the liquid phase change working medium L to the volume of the interlayer cavity Q should be not less than 0.1 and not more than 0.5. Specifically, if the ratio is too large (if the ratio exceeds 0.5), a large amount of gaseous phase change working medium L is generated after the outer pot 2 is heated, so that the pressure in the interlayer cavity Q is increased rapidly, and the situation of pot bursting and potential safety hazard are easily caused; and if this ratio sets up to be undersized (if being less than 0.1), then be heated the back at outer pot 2, do not have sufficient liquid phase change working medium L to shift the heat of outer pot 2, can not form between gaseous state and the liquid phase change working medium L coherent supply with the backward flow circulation relation promptly, not only can cause outer pot 2 to take place the condition of local overheat, influence the life of pan, but also can reduce the heat transfer efficiency of pan by a wide margin, influence user's culinary art and experience.
In addition, in order to prevent the liquid phase change working medium L from being vaporized into the gaseous phase change working medium L and then escaping from the interlayer cavity Q, the interlayer cavity Q is preferably set to be a closed cavity. In order to reduce the vaporization temperature of the liquid phase-change working medium L and further improve the heat transfer efficiency of the cookware, the interlayer cavity Q is preferably set to be a vacuum cavity (i.e. the pressure in the interlayer cavity Q is lower than one atmospheric pressure).
Optionally, referring to fig. 1 and 3, the top surfaces of the inner peripheral wall of the outer pot and the bottom wall of the outer pot are completely covered with the outer porous layer 21, so that the processing process is simple, the vapor-liquid phase virtuous cycle effect of the liquid phase-change working medium L in the interlayer cavity Q is good, and the feasibility is high. Specifically, the more the area of the outer porous layer 21 covered on the inner wall of the outer pot 2, the more heat is accordingly conducted to the outer pot 2, resulting in more heat being diffused and lost outwardly through the outer pot 2, and therefore, in order to enhance the heat transfer efficiency and the heat efficiency of the pot, the circumferential outer porous layer is formed as a plurality of vertical outer porous layers extending radially from the outer periphery of the bottom outer porous layer toward the tip of the inner peripheral wall of the outer pot. Or, a heat insulation layer can be arranged on the outer peripheral wall of the outer pot 2 to prevent excessive heat from being diffused and lost outwards.
Further, the interlayer cavity Q may include a circumferential interlayer cavity Q1 formed between the circumferential wall of the inner pot 1 and the circumferential wall of the outer pot 2, and a circumferential overflow flow passage is formed between the circumferential outer porous layer and the inner side wall of the circumferential interlayer cavity Q1. So set up, the gaseous phase change working medium L that comes from the intermediate layer chamber Q bottom can be fast from the bottom diffusion that the runner was overflowed to circumference overflow the top of runner, also can make gaseous phase change working medium L be full of whole circumference fast and overflow the runner, impels gaseous phase change working medium L to heat interior pot 1 uniformly.
Further, referring to fig. 1, the sandwich cavity Q may include a bottom sandwich cavity Q2 sandwiched between the bottom wall of the inner pot 1 and the bottom wall of the outer pot 2, and a bottom overflow flow passage is formed between the bottom outer porous layer and the inner sidewall of the bottom sandwich cavity Q2. Like this, gaseous phase change working medium L that liquid phase change working medium L produced after vaporization can overflow the runner along the bottom and spread towards circumference intermediate layer chamber Q1 four times fast, is favorable to gaseous phase change working medium L to be full of whole intermediate layer chamber Q fast, not only can make interior pot 1 be heated more evenly, but also is favorable to improving the heat transfer efficiency of pan.
In order to enable the gaseous phase-change working medium L to be diffused upwards more quickly, preferably, the circumferential overflowing flow channel is a flow channel with a radial width gradually narrowed along the axial upward direction of the cookware. Of course, the circumferential flow passage may be a radial flow passage with an equal radial width instead of a radial flow passage with a gradually narrowed radial width, and the like, but is not limited thereto. In addition, from the pan center along radial outside, the bottom overflows the runner and preferably the axial width gradually widens the runner, like this, is favorable to improving gaseous phase change working medium L four speed of diffusing in bottom intermediate layer chamber Q2, impels gaseous phase change working medium L to fill up whole intermediate layer chamber Q more fast. Specifically, the bottom overflow channel can be arranged in a plurality of suitable ways, such as radially outward from the center of the pot, the bottom overflow channel is an axial width channel, and the like, which are not illustrated herein.
Preferably, the radial width of the circumferential flow channels and/or the axial width of the bottom flow channels should not be less than 0.5 mm. Specifically, if the radial width of the circumferential overflow channel is set to be too small, the circumferential overflow channel is not favorable for the gaseous phase-change working medium L to flow upwards in the circumferential overflow channel, the speed of the gaseous phase-change working medium L filling the circumferential overflow channel can be reduced, correspondingly, if the axial width of the bottom overflow channel is set to be too small, the bottom overflow channel is not favorable for the gaseous phase-change working medium L to diffuse around in the bottom overflow channel, and the speed of the gaseous phase-change working medium L filling the interlayer cavity Q can also be reduced. Furthermore, the radial width of the circumferential flow channels and/or the axial width of the bottom flow channels should not be greater than 8 mm. It can be understood that if the radial width of the circumferential overflowing flow channel and/or the axial width of the bottom overflowing flow channel are/is too large, the space occupied by the circumferential overflowing flow channel and/or the bottom overflowing flow channel is larger, so that if the size of the outer pot 2 is not changed, the size of the inner pot 1 needs to be reduced, food materials contained in the inner pot 1 are greatly reduced, and if the size of the inner pot 1 is not reduced, the size of the outer pot 2 needs to be increased, so that the outer pot 2 is bulkier. In addition, if the radial width of the circumferential overflowing flow channel and/or the axial width of the bottom overflowing flow channel are/is too large, more gaseous phase-change working media L can be retained in the interlayer cavity Q, and the vapor-liquid circulation phase-change speed of the vapor-liquid phase-change working media L in the interlayer cavity Q can be reduced.
In general, the temperature of the outer pot 2 is lower as it approaches the top end, so that more gaseous phase-change working medium L can be condensed into liquid phase-change working medium L on the outer porous layer 21, and more liquid phase-change working medium L can flow back to the bottom of the sandwiched cavity Q, preferably, the axial distance between the top end of the circumferential outer porous layer and the top end of the sandwiched cavity Q is d1, and the axial height of the pot is higherDegree is D, and should satisfy:
in particular, the cookware is generally cylindrical in shape, axial refers to axial along the cookware, and radial refers to radial along the cookware.
In some embodiments, the inner porous layer 11 may be disposed on the inner sidewall of the interlayer cavity Q, and the inner porous layer 11 has a larger specific surface area, which is beneficial to increase the heat transfer speed, so that the gaseous phase-change working medium L can be rapidly condensed on the inner porous layer 11 to form the liquid phase-change working medium L, and the heat carried in the gaseous phase-change working medium L can also be rapidly transferred to the inner wall of the inner pot 1 through the inner porous layer 11, and then the food material accommodated in the inner pot 1 is heated and cooked through the inner wall of the inner pot 1. Like this, can make the heat that gaseous phase transition working medium L carried can conduct the inner wall to interior pot 1 fast through porous layer 11 in setting up to can effectively improve the heat transfer efficiency of pan, make the quick temperature rise of interior pot 1, be favorable to improving the rate of heating of eating the material, and then give the better culinary art of user and experience.
In particular, the inner porous layer 11 comprises a bottom inner porous layer provided on the bottom surface of the inner pot bottom wall of the inner pot 1Anda circumferential inner porous layer which is arranged on the outer circumferential wall of the inner pot 1 and is connected with the bottom inner porous layer. The inner peripheral wall of the inner pot and the bottom surface of the bottom wall of the inner pot 1 can be partially or completely covered with the inner porous layer 11, the porous layer has larger specific surface area and can accelerate the heat transfer speed, and the more the area of the inner porous layer 11 covered on the outer wall of the inner pot 1 is, the more the heat is correspondingly conducted to the inner pot 1, therefore, referring to fig. 1, the inner side wall of the sandwich cavity Q is completely covered with the inner porous layer 11, which can promote the pot to have higher heat transfer efficiency and heat efficiency.
In addition, when the inner porous layer 11 and the outer porous layer 21 are not connected to each other at the top of the interlayer cavity Q, the liquid phase change working medium L condensed on the circumferential inner porous layer may be accumulated thereon, so that the adjacent liquid phase change working mediums L are easily connected together to form a water ring, which is not favorable for the gaseous phase change working medium L to continuously contact with the inner porous layer 11 and further transfer heat to the inner wall of the inner pot 1, and thus the temperature equalizing effect of the inner pot 1 is not ideal, and therefore, in order to make the inner pot 1 have a good temperature equalizing effect, referring to fig. 3 and 4, the inner porous layer 11 may be stacked on the bottom surface of the bottom wall of the inner pot 1, that is, the inner porous layer 11 at least includes the bottom inner porous layer disposed on the bottom surface of the bottom wall of the inner pot 1. Wherein, the circumferential inner porous layer is not arranged on the circumferential wall of the inner pot 1, so that excessive liquid phase change working medium L can not be accumulated on the circumferential inner porous layer, thereby effectively avoiding the situation that the bottom of the interlayer cavity Q is lack of the liquid phase change working medium L for vaporization, being beneficial to ensuring the vapor-liquid phase virtuous cycle of the liquid phase change working medium L in the interlayer cavity Q, and further promoting the pot to have higher heat transfer efficiency.
Further, referring to fig. 1 and 3, a top rim circumferential seal is formed between the top rim of the circumferential wall of the inner pot 1 and the top rim of the circumferential wall of the outer pot 2, and a circumferential inner porous layer extending to the top rim of the circumferential wall of the inner pot 1 is connected with a circumferential outer porous layer extending to the top rim of the circumferential wall of the outer pot 2. So arranged, when the heating element heats the outer pot 2 to make the bottom outer porous layer on the outer side wall of the bottom interlayer cavity Q2 generate a liquid-losing state, the phase change working medium L in the liquid state condensed on the circumferential inner porous layer can be caused to flow upward and into the circumferential outer porous layer connected to the circumferential inner porous layer, then the liquid phase change working medium L flowing into the circumferential outer porous layer positioned at the top of the outer pot 2 and the liquid phase change working medium L condensed on the circumferential inner porous layer at the top of the outer pot 2 rapidly flow to the bottom outer porous layer again, therefore, the gaseous phase-change working medium L can be more quickly adsorbed to the circumferential inner porous layer and exchanges heat with the inner pot 1 to further improve the heat transfer efficiency of the pot, but also can ensure that the liquid phase-change working medium L has better vapor-liquid circulation phase-change speed in the interlayer cavity Q.
Generally, the highest liquid level of the food material loaded in the inner pot 1 does not exceed two thirds of the axial height of the pot, therefore, in order to ensure that the inner pot 1 has a good uniform temperature heating effect on the food material contained therein, preferably, the axial distance between the top end of the circumferential inner porous layer and the top end of the interlayer cavity Q is D2, and the axial height of the pot is D, it should be satisfied that:
alternatively, the inner porous layer 11 may be a metal porous layer, a ceramic porous layer, a plastic porous layer, or the like, without being limited thereto. Accordingly, the outer porous layer 21 may be a metal porous layer, a ceramic porous layer, a plastic porous layer, or the like. Specifically, the inner porous layer 11 and/or the outer porous layer 21 are preferably made of a metal material, which has a faster heat transfer rate and better heat and aging resistance than the inner porous layer 11 and/or the outer porous layer 21 made of a ceramic material or a plastic material. The inner porous layer 11 and/or the outer porous layer 21 may be formed by stacking metal meshes (i.e., the inner porous layer 11 and/or the outer porous layer 21 are metal mesh stacked layers) and/or by sintering metal powder (i.e., the inner porous layer 11 and/or the outer porous layer 21 are metal powder sintered layers), and may be formed by other methods, which are not illustrated herein. When the inner porous layer 11 and/or the outer porous layer 21 are sintered from metal powder, the inner porous layer 11 and the wall of the inner pot 1 and/or the outer porous layer 21 and the wall of the outer pot 2 have compatibility, so that the sintered inner porous layer 11 and the wall of the inner pot 1 can form an integral structure, namely, the joint of the inner porous layer 11 and the wall of the inner pot 1 also has a porous structure; and/or the sintered outer porous layer 21 can form an integral structure with the wall of the outer pot 2, i.e. the joint of the outer porous layer 21 and the wall of the outer pot 2 also has a porous structure. Therefore, the bonding force between the porous layer and the pot wall is better, and the heat transfer efficiency is higher.
Preferably, the porosity of the inner porous layer 11 and/or the outer porous layer 21 should be 10% to 80%. Specifically, the smaller the porosity, the smaller the specific surface area, the more unfavorable the rapid heat transfer, so that for the inner porous layer 11, the heat transfer efficiency of the pot is reduced, and for the outer porous layer 21, the gas-liquid phase circulation of the liquid phase change working medium L is adversely affected; the larger the porosity of the inner porous layer 11 and/or the outer porous layer 21 is, the more the liquid phase-change working medium L accumulated thereon is, which is more likely to cause the adjacent liquid phase-change working mediums L to be connected together, which will reduce the flow speed of the condensed liquid phase-change working medium L toward the bottom of the interlayer cavity Q, and is not beneficial to the gas-liquid phase virtuous cycle of the liquid phase-change working medium L.
In addition, the average pore cross-sectional area of inner porous layer 11 and/or outer porous layer 21 should be not less than 0.2mm2And not more than 1mm2. Specifically, the average pore cross-sectional area is set too large or too small, which is not favorable for the water absorption effect (i.e. the liquid phase-change working medium L is absorbed from the part of the liquid phase-change working medium L which is rich to the part of the liquid phase-change working medium L which is deficient on the inner porous layer 11 and/or the outer porous layer 21), so as to reduce the flow velocity of the liquid phase-change working medium L, and further influence the gas-liquid phase virtuous cycle of the liquid phase-change working medium L. Wherein the cross-sectional area of the pores is the cross-sectional area of the pores.
Can be used forAlternatively, the thickness of inner porous layer 11 and/or outer porous layer 21 should be not less than 0.1mm and not more than 1 mm. Specifically, the thickness value is preferably within the above range, so that the liquid phase-change working medium L has a better flow rate thereon, which is beneficial to the vapor-liquid virtuous cycle of the liquid phase-change working medium L, and the pot does not occupy more space, thereby making the pot structure smaller and more compact.
It should be noted that other configurations and functions of the pot and the cooking device according to the embodiments of the present invention are known to those skilled in the art, and are not described herein in detail to reduce redundancy.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.
In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.
Claims (15)
1. The utility model provides a pot, its characterized in that, the pot is double-deck pot and includes interior pot and outer pot, interior pot with be formed with inclosed intermediate layer chamber between the outer pot, the intermediate layer intracavity holds liquid phase transition working medium, be equipped with outer porous layer on the lateral wall in intermediate layer chamber, outer porous layer including set up in outer porous layer in the bottom on the top surface of the outer pot diapire of outer pot with set up in on the outer pot internal perisporium of outer pot and with the outer porous layer in circumference that the porous layer is connected outside the bottom.
2. The cookware according to claim 1, wherein the top surfaces of said outer pot inner peripheral wall and said outer pot bottom wall are completely covered with said outer porous layer;
alternatively, the circumferential outer porous layer is formed as a plurality of vertical outer porous layers extending radially from the outer peripheral edge of the bottom outer porous layer toward the top end of the inner peripheral wall of the outer pan.
3. The cookware of claim 1, wherein said sandwich cavity comprises a circumferential sandwich cavity formed between a circumferential wall of said inner pan and a circumferential wall of said outer pan, a circumferential overflow flow channel being formed between said circumferential outer porous layer and an inner sidewall of said circumferential sandwich cavity.
4. The cookware of claim 3, wherein said sandwich cavity comprises a bottom sandwich cavity sandwiched between a bottom wall of said inner pan and a bottom wall of said outer pan, a bottom overflow flow passage being formed between said bottom outer porous layer and an inner sidewall of said bottom sandwich cavity.
5. The pot as claimed in claim 4, wherein the circumferential overflow flow passage is a flow passage with an equal radial width or a flow passage with a gradually narrowed radial width in an axially upward direction of the pot;
and/or, the bottom overflowing flow channel is an axial width flow channel or an axial width gradually-widened flow channel along the radial outward direction from the center of the pot.
6. The cookware according to claim 4, wherein the radial width of the circumferential overflow runner and/or the axial width of the bottom overflow runner is not less than 0.5mm and not more than 8 mm;
and/or the axial distance between the top end of the circumferential outer porous layer and the top end of the interlayer cavity is D1, the axial height of the cookware is D, and the following conditions are met:
7. the cookware according to any one of claims 1 to 6, wherein an inner porous layer is provided on the inner side wall of the interlayer cavity, and the inner porous layer comprises at least a bottom inner porous layer provided on the bottom surface of the inner pan bottom wall of the inner pan.
8. The cookware according to claim 7, wherein said inner porous layer further comprises a circumferential inner porous layer provided on an outer peripheral wall of said inner pan and connected to said bottom inner porous layer;
or the inner porous layer is completely covered on the outer peripheral wall of the inner pot and the bottom surface of the bottom wall of the inner pot.
9. The cookware of claim 8, wherein the axial distance between the top end of said circumferential inner porous layer and the top end of said sandwich cavity is d2 and said d2 satisfies:
10. the cookware according to claim 7, wherein the thickness of said inner porous layer and/or said outer porous layer is not less than 0.1mm and not more than 1 mm;
and/or the interlayer cavity is a vacuum cavity.
11. The cookware according to claim 1, wherein the liquid phase change working medium is water, an ethanol aqueous solution or an ether aqueous solution;
and/or the ratio of the volume of the liquid phase change working medium to the volume of the interlayer cavity is not less than 0.1 and not more than 0.5.
12. The cookware according to claim 7, wherein said inner porous layer and/or said outer porous layer is a metallic porous layer, a ceramic porous layer or a plastic porous layer;
wherein the porosity of the inner porous layer and/or the outer porous layer is 10 to 80%, and the average pore cross-sectional area of the inner porous layer and/or the outer porous layer is not less than 0.2mm2And not more than 1mm2。
13. The pan according to claim 7, wherein the inner porous layer is compatible with the pan wall of the inner pan and/or the outer porous layer is compatible with the pan wall of the outer pan;
and/or the inner porous layer and/or the outer porous layer are at least one of a porous structure formed by sintering metal powder and a porous structure formed by stacking metal meshes.
14. A cooking device, characterized in that it comprises a pot according to any of claims 1-13.
15. The cooking device of claim 14, further comprising a heating element for heating the outer pan, the minimum height of the top end of the circumferential outer porous layer being greater than the maximum height of the heating element.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113712451A (en) * | 2021-09-01 | 2021-11-30 | 海信家电集团股份有限公司 | Cook machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113712451A (en) * | 2021-09-01 | 2021-11-30 | 海信家电集团股份有限公司 | Cook machine |
| CN113712451B (en) * | 2021-09-01 | 2023-10-03 | 海信家电集团股份有限公司 | Chef machine |
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