CN112120521B

CN112120521B - Steam heating structure for cooking device and steaming cooking device thereof

Info

Publication number: CN112120521B
Application number: CN202010887603.3A
Authority: CN
Inventors: 杜鑫; 付远华; 余科帆; 曹骥
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-08-20
Anticipated expiration: 2040-08-28
Also published as: CN112120521A

Abstract

The invention relates to a steam heating structure for a cooking device and the cooking device, comprising an inner container and a steam generator, wherein the left inner side and the right inner side of the inner container are respectively provided with a bracket for placing a steaming tray, the steam generator is arranged outside the inner container, the bracket comprises a first bracket corresponding to the steam generator, the first bracket is of a hollow structure, the side wall of the inner container is provided with a first mounting hole, the side wall of the first bracket is provided with an outer discharge hole, a steam outlet of the steam generator is communicated with the first mounting hole through a steam pipe, and the pipe diameter of the steam pipe is gradually reduced from the steam outlet of the steam generator to the first mounting hole. The steam generator can lead the steam generated in the steam generator to be quickly led into the inner container, and in addition, the steam is led into the first bracket before finally entering the inner container cavity, so that part of condensed water in the steam can be remained in the first bracket, thereby reducing the humidity of the steam led into the inner container cavity and improving the utilization rate of the steam.

Description

Steam heating structure for cooking device and steaming cooking device thereof

Technical Field

The invention relates to the field of cooking devices, in particular to a steam heating structure for a cooking device and a steaming cooking device thereof.

Background

The steam box, the all-in-one of steaming and baking, the little all-in-one of steaming and baking and the domestic appliance who takes the function of steaming such as the little all-in-one of steaming and baking cook food through steam, and the current domestic appliance who takes the function of steaming is external generally or built-in have steam generator, produce the required steam of culinary art food through steam generator. The steam that current steam generator produced generally flows the velocity of flow and is slower and humidity is great, has the outward water vapour more, the culinary art time is longer or steam utilization ratio scheduling problem excessively.

In addition, the track muscle that is used for placing the steaming tray is generally provided with on current area evaporates the domestic appliance's of function inner bag wall, aims at the steaming tray during the use and places on the track muscle, pushes the steaming tray towards inner bag inside to the end and accomplishes the placing of steaming tray afterwards. It can be seen that the supporting structure of current track muscle and steaming tray needs the user comparatively accurately will bear a burden steaming tray as for the track muscle on, and the user will evaporate the dish and aim at with the track muscle needs the certain time, and the steaming tray that the user both hands lift and bear a burden is longer, experiences and feels relatively poor.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide a steam heating structure for a cooking device with a fast steam flow rate, aiming at the prior art.

A second technical problem to be solved by the present invention is to provide a steam heating structure for a cooking apparatus with high steam utilization rate.

The third technical problem to be solved by the present invention is to provide a steam heating structure for a cooking device, which is convenient for placing a steaming tray, aiming at the prior art.

A fourth technical problem to be solved by the present invention is to provide a steaming cooking device having the above steam heating structure in view of the prior art.

The technical scheme adopted by the invention for solving at least one technical problem is as follows: the utility model provides a steam heating structure for cooking device, includes inner bag and steam generator, a serial communication port, be provided with the support that is used for placing steaming tray on the medial surface about the inner bag respectively, above-mentioned steam generator sets up outside the inner bag, and above-mentioned support includes the first support that corresponds with this steam generator, this first support is hollow structure, first mounting hole has been seted up on the lateral wall of above-mentioned inner bag, and outer round of stock has been seted up on the lateral wall of first support, and steam generator's steam outlet passes through the steam pipe intercommunication with above-mentioned first mounting hole, and the pipe diameter of this steam pipe is dwindled to first mounting hole direction by steam generator's steam outlet gradually.

Furthermore, the steam delivery pipe comprises a first steam delivery pipe section extending obliquely from bottom to top and a second steam delivery pipe section extending obliquely from top to bottom in sequence along the direction from the steam outlet of the steam generator to the first mounting hole of the inner container, and the first steam delivery pipe section is smoothly connected with the second steam delivery pipe section. Therefore, condensed water in steam entering the first steam conveying pipe section can flow back to the steam generator along the inner peripheral surface of the first steam conveying pipe section, the humidity of the steam is reduced, the condensed water can be recycled, the speed of the steam in the second steam conveying pipe section entering the first support can be increased due to the fact that the second steam conveying pipe section inclines from top to bottom, the flowing speed of the steam in the steam conveying pipe is further increased, and in addition, the condensed water in the second steam conveying pipe section can be guided into the inner cavity of the first support through the inclined design (combined with the design of the liquid flow holes) of the second steam conveying pipe section.

Furthermore, the pipe orifice of the first steam delivery pipe section is communicated with the steam outlet of the steam generator, and the lower end of the opening edge of the pipe orifice is downwards sunken from inside to outside relative to the steam delivery pipe to form a flow guide arc surface facing the inner cavity of the steam generator. The condensed water in the first steam delivery pipe section can be more smoothly guided back to the interior of the steam generator through the flow guide cambered surface.

Furthermore, the pipe orifice of the second steam delivery pipe section is communicated with the first mounting hole of the inner container and extends towards the inside of the first support to form a first steam spraying pipe section, and the pipe orifice of the first steam spraying pipe section is opposite to the outer discharge hole of the first support. The steam that is sprayed the steam pipe section spun by first can be directly spouted to outer discharge hole department, and then can get into the inner bag inner chamber through outer discharge hole fast to can avoid steam vortex and reduce the velocity of flow in first support, also can avoid the gas portion in the steam to a certain extent simultaneously by the comdenstion water in first support, improve the utilization ratio of steam.

The steam-steaming plate is characterized by further comprising a steam-steaming plate, wherein steam inlets are formed in the side wall of the steam-steaming plate, the steam inlets are arranged opposite to and in fluid communication with the outer discharge holes in the first support, and pore channels of the steam inlets and the outer discharge holes are inclined from top to bottom along the direction from the outer discharge holes to the steam inlets. Like this steam shortens the flow path of steam through outer discharge hole and admission hole for steam can directly spout on the food of steaming tray, thereby further improves the utilization ratio of steam, avoids the heat waste in the steam.

Furthermore, the first steam spraying pipe section is formed by horizontally extending a pipe orifice of the second steam conveying pipe section, the pipe orifice of the first steam spraying pipe section is upwards inclined by 45 degrees relative to the horizontal plane, and the included angles formed by the pore passages of the steam inlet holes and the outer row holes and the horizontal plane are both 45 degrees. Through the design of the specific angle, the spraying path of the steam from the pipe orifice of the first steam spraying pipe section to the food in the steaming tray can be shortened to the maximum extent, so that the utilization rate of the steam is improved to the maximum extent.

Furthermore, at least one shunt opening is formed in the pipe wall of the first steam delivery pipe section, second mounting holes which are parallel to the first mounting holes and correspond to the shunt openings one to one are formed in the side wall of the inner container, each shunt opening is communicated with the corresponding second mounting hole through a shunt pipe, and the pipe diameter of each shunt pipe is gradually reduced from the corresponding separation opening to the second mounting hole. Can shunt the steam of steam outlet spun through the design of reposition of redundant personnel mouth for steam can get into first support more fast.

Furthermore, each shunt tube comprises a first shunt tube section extending from bottom to top in an inclined manner and a second shunt tube section extending from top to bottom in an inclined manner in sequence along the direction from the shunt port to the corresponding second mounting hole, and the first shunt tube section is smoothly connected with the second shunt tube section. The condensate water that gets into in the steam of first reposition of redundant personnel section like this can flow back to first reposition of redundant personnel section and finally flow back to steam generator through the diffluence pass along the inner peripheral surface of first reposition of redundant personnel section, not only reduced the humidity of steam, and realize the recycle to the comdenstion water, and the second reposition of redundant personnel section from top to bottom slope can accelerate the speed that the steam in the second reposition of redundant personnel section gets into first support, thereby further accelerate the flow velocity of the steam in each shunt tubes, in addition, also can be with the leading-in inner chamber of first support of comdenstion water in the second reposition of redundant personnel section through the slope design to the second reposition of redundant personnel.

Furthermore, the pipe orifices of the second branch pipe section are communicated with the second mounting hole of the inner container and extend towards the inside of the support to form a second steam spraying pipe section, and at least two external discharge holes are formed and correspond to the pipe orifices of the steam spraying pipe sections one by one and are opposite to each other respectively. Like this spout vapour pipe section spun steam by the second and can directly spout to outer orifice department, and then can get into the inner bag inner chamber through outer orifice fast in to can avoid steam vortex and reduce the velocity of flow in first support, also can avoid simultaneously to a certain extent that the gas portion in each second spouts vapour pipe section spun steam is by the comdenstion water in first support, improves the utilization ratio of steam. In addition, the design of the outer discharge holes which correspond to the pipe orifices of the steam injection pipe sections one by one enables the steam to be uniformly introduced into the inner container.

Further, the second steam injection pipe section is formed by horizontally extending a pipe orifice of the second branch pipe section, and the pipe orifice of the second steam injection pipe section is inclined upwards by 45 degrees relative to the horizontal plane.

Furthermore, the pipe wall of each steam injection pipe section is respectively provided with a liquid flowing hole, and the bottom wall of the first support is provided with a drain hole. Therefore, condensed water in each steam jet pipe section can flow into the first bracket through the liquid flow holes and is discharged outside through the water discharge holes. In order to recycle the condensed water discharged by the drain hole, the condensed water discharged by the drain hole can directly drip on the inner bottom surface of the inner container, the condensed water is directly heated and evaporated by the heating device at the bottom of the inner container, and the generated steam is directly supplemented into the steaming tray of the inner container, or the drain hole is communicated with the water return hole of the water tank through a pipeline, so that the condensed water is recovered.

Further, the appearance of first support is rectangular cover body form, and it extends and covers on the medial surface of inner bag along the fore-and-aft direction of inner bag, and along its fore-and-aft direction undercut and form water drainage tank on the interior bottom surface of this first support, above-mentioned wash port is seted up on the cell wall of this water drainage tank, in the cross section of above-mentioned first support, and the bottom surface part all from top to bottom inclines towards water drainage tank direction in the first support of water drainage tank both sides. Therefore, the water dropping from the liquid flow hole to the inner bottom surface of the first support can be converged to the drainage groove under the guidance of the inner bottom surface of the first support and is discharged outside through the drainage hole on the drainage groove.

Further, in the cross section of the first bracket, the top wall of the first bracket extends horizontally to form a supporting surface for placing a rim of the steaming tray on the top surface, the outer surface of the side wall of the first bracket is smoothly recessed from top to bottom to form a guide surface which can be tightly attached to the corresponding outer side surface of the steaming tray, the supporting surface of the first bracket and the guide surface are smoothly transited to form a first guide arc surface matched with the transition angle between the lower surface of the rim of the steaming tray and the outer side surface of the steaming tray, the guide surface of the first bracket and the bottom surface of the first bracket are smoothly transited to form a second guide arc surface matched with the side edge of the bottom of the steaming tray, and the bracket further comprises a second bracket, and the shape of the second bracket is the same as that of the first bracket. The holding surface of first support and second support is along the cooperation with the dish about the steaming tray respectively like this, and the spigot surface of first support and second support respectively with the steaming tray about the side cooperation to and under the assistance of the first direction cambered surface of first support and second direction cambered surface, thereby with the leading-in inner bag depths of steaming tray, the steaming tray that convenience of customers load has food places in the inner bag, promotes user's use and experiences.

Further, the outer row holes are respectively arranged on the side wall of the first bracket, the steam inlet holes are arranged on the corresponding side wall of the steaming tray, and the steam inlet holes and the outer row holes are respectively in one-to-one correspondence. Therefore, each outer discharge hole is tightly attached to the corresponding steam inlet hole, and steam sprayed by each steam spraying pipe section can be quickly introduced into the steaming tray for cooking food.

Further, a first turbulence arc surface and a second turbulence arc surface which correspond to the first guide arc surface and the second guide arc surface are respectively formed in the inner cavity of the first support, wherein the first turbulence arc surfaces are respectively opposite to the pipe orifices of the steam spraying pipe sections. The heat exchange coefficient and parameters (speed, dry and wet state and the like) of the steam can be improved by arranging the first turbulent arc surface and the second turbulent arc surface.

Further, be provided with heating device on the first support, can carry out the secondary heating to the steam that gets into in the first support through heating device, further reduce the humidity of steam, improve the heat transfer coefficient of steam and food, effectively shorten the culinary art time.

Further, the heating device is a heating film disposed on the top wall and the front and rear side walls of the first bracket. The heating area of the heating film is large, so that the secondary heating efficiency of the heating device to steam can be improved.

Furthermore, an inward convex turbulence bump is arranged on the inner side surface of the steaming tray. The disturbance of steam entering the steaming tray can be promoted by arranging the turbulence lug, so that the flow speed of the steam is improved, and the utilization rate of the steam is further improved.

Further, the turbulence lugs are respectively arranged on the front side wall and the rear side wall of the inner container and are respectively formed by inwards protruding corresponding parts of the front side wall and the rear side wall, and handle grooves for fingers to insert and hold are respectively formed on the outer surfaces of the front side wall and the rear side wall. Can lead to the food middle part with steam through the vortex lug like this for the steam that gets into the steaming tray distributes more evenly, and then realizes the even heating to the food in the steaming tray.

The technical scheme adopted for further solving the fourth technical problem is as follows: a steaming cooking device with the steam heating structure is provided.

Compared with the prior art, the invention has the advantages that: steam generated in the steam generator is guided into the first bracket through the steam outlet by the steam conveying pipe and finally is introduced into the inner cavity of the inner container through the outer discharge holes on the first bracket to heat food. Because the pipe diameter of steam transmission pipe is dwindled to first mounting hole direction by steam generator's play steam port gradually, steam can make its velocity of flow constantly accelerate along with the change of steam transmission pipe diameter in the steam transmission pipe flow process like this, thereby enable the steam that produces among the steam generator and can let in the inner bag fast, in addition, steam is let in first support before finally getting into the inner bag inner chamber earlier, partial condensate water in the steam can be stayed in first support like this, thereby reduce the humidity that lets in the steam of inner bag inner chamber, improve the utilization ratio of steam.

Drawings

FIG. 1 is a schematic structural view of a steam heating structure according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a steam heating structure in an embodiment of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a partial schematic view of a steam heating structure according to an embodiment of the present invention;

FIG. 5 is a schematic view of another partial structure of a steam heating structure according to an embodiment of the present invention;

FIG. 6 is a schematic view of still another partial structure of a steam heating structure according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a steaming tray according to an embodiment of the present invention;

FIG. 8 is a schematic structural view of a vapor outlet tube according to an embodiment of the present invention;

fig. 9 is a schematic structural view in another direction of fig. 8.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 9, a steaming cooking device, for example: the steam box, the steaming and baking integrated machine or the steaming and baking integrated machine comprises a steam heating structure, wherein the steam heating structure comprises an inner container 1, a steam generator 2 and a steaming tray 3 placed in the inner container 1. The inner container 1 is provided with a bracket for placing the steaming tray 3 on the left inner side and the right inner side, the steam generator 2 is arranged outside the inner container 1, the bracket comprises a first bracket 4 and a second bracket 5 corresponding to the steam generator 2, the first bracket 4 is of a hollow structure, and the second bracket 5 has the same shape as the first bracket 4. The sidewall of the inner container 1 is provided with a first mounting hole 11, the sidewall of the first bracket 4 is provided with an outer discharge hole 41, the steam outlet 21 of the steam generator 2 is communicated with the first mounting hole 11 through a steam pipe 7, and the pipe diameter of the steam pipe 7 is gradually reduced from the steam outlet 21 of the steam generator 2 to the first mounting hole 11. Thus, in the present invention, the steam generated in the steam generator 2 is introduced into the first bracket 4 through the steam outlet 21 via the steam pipe 7, and finally introduced into the inner cavity of the inner container 1 through the outer discharge hole 41 of the first bracket 4 to heat the food. Because the pipe diameter of steam transmission pipe 7 is dwindled by steam generator 2's steam outlet 21 to 11 directions of first mounting hole gradually, steam makes its velocity of flow constantly accelerate along with the change of steam transmission pipe 7 pipe diameter in 7 flow processes of steam transmission pipe like this, thereby enable steam that produces among the steam generator 2 and let in inner bag 1 fast, in addition, steam is let in first support 4 before finally getting into the inner chamber of inner bag 1 in first, partial condensate water in the steam can be stayed in first support 4 like this, thereby reduce the humidity of the steam that lets in the inner bag 1 inner chamber, improve the utilization ratio of steam.

Further, the steam pipe 7 sequentially comprises a first steam pipe section 71 extending obliquely from bottom to top and a second steam pipe section 72 extending obliquely from top to bottom along the direction from the steam outlet 21 of the steam generator 2 to the first mounting hole 11 of the liner 1, and the first steam pipe section 71 and the second steam pipe section 72 are smoothly connected. Therefore, condensed water in the steam entering the first steam delivery pipe section 71 can flow back to the steam generator 2 along the inner circumferential surface of the first steam delivery pipe section 71, not only is the humidity of the steam reduced, but also the condensed water can be recycled, the steam in the second steam delivery pipe section 72 can be accelerated to enter the first support 4 by inclining the second steam delivery pipe section 72 from top to bottom, so that the flow speed of the steam in the steam delivery pipe 7 is further accelerated, and in addition, the condensed water in the second steam delivery pipe section 72 can be guided into the inner cavity of the first support 4 by the inclined design of the second steam delivery pipe section 72. The nozzle of the second steam delivery pipe section 72 is communicated with the first mounting hole 11 of the liner 1 and extends towards the inside of the first bracket 4 to form a first steam injection pipe section 73, and the nozzle of the first steam injection pipe section 73 is opposite to the outer row of holes 41 of the first bracket 4. The steam that is spouted by first steam injection pipe section 73 spun can be directly spouted to outer hole 41 department of arranging, and then can get into the inner chamber of inner bag 1 through outer hole 41 fast to can avoid steam vortex and reduce the velocity of flow in first support 4, also can avoid the gas portion in the steam to a certain extent to be condensed in first support 4 simultaneously, improve the utilization ratio of steam.

Preferably, in order to more smoothly guide the condensed water in the first steam delivery pipe section 71 back to the inside of the steam generator 2, the pipe orifice of the first steam delivery pipe section 71 is communicated with the steam outlet 21 of the steam generator 2, and the lower end of the opening edge of the pipe orifice is recessed downwards relative to the steam delivery pipe 7 from inside to outside to form a flow guiding arc surface 711 facing the inner cavity of the steam generator 2, so that the condensed water in the first steam delivery pipe section 71 can be more smoothly guided back to the steam generator 2 through the flow guiding arc surface 711.

At least one branch opening 74 is formed in the pipe wall of the first steam delivery pipe section 71, second mounting holes 12 which are parallel to the first mounting holes 11 and correspond to the branch openings 74 one by one are formed in the side wall of the inner container 1, and each branch opening 74 is communicated with the corresponding second mounting hole 12 through a branch pipe 8. The steam ejected from the steam outlet 21 can be branched by the design of the branch port 74, so that the steam can enter the first bracket 4 more rapidly. In this embodiment, two branch ports 74 are symmetrically formed on the front and rear pipe walls of the first steam delivery pipe section 71, and correspondingly, two branch pipes 8 are provided and correspond to the branch ports 74 one by one. Moreover, the pipe diameter of each shunt pipe 8 is gradually reduced from the corresponding shunt opening 74 to the second mounting hole 12, so that the flow rate of the steam can be continuously increased along with the change of the pipe diameter of each shunt pipe 8 in the flowing process of each shunt pipe 8.

Furthermore, each of the shunt tubes 8 sequentially includes a first shunt tube section 81 extending obliquely from bottom to top and a second shunt tube section 82 extending obliquely from top to bottom along the direction from the shunt opening 74 to the corresponding second mounting hole 12, and the first shunt tube section 81 and the second shunt tube section 82 are smoothly connected. Thus, condensed water in steam entering the first branch pipe section 81 can flow back to the first steam delivery pipe section 71 through the branch flow port 74 along the inner circumferential surface of the first branch pipe section 81 and finally flow back to the steam generator 2, not only is the humidity of the steam reduced, but also the condensed water can be recycled, the second branch pipe section 82 inclines from top to bottom to accelerate the speed of the steam in the second branch pipe section 82 entering the first support 4, so that the flow speed of the steam in each branch pipe 7 is further accelerated, and in addition, the condensed water in the second branch pipe section 82 can be guided into the inner cavity of the first support 4 through the inclined design of the second branch pipe section 82. The pipe orifices of the second branch pipe section 82 are communicated with the second mounting hole 12 of the liner 1 and extend towards the inside of the bracket to form a second steam injection pipe section 83, and the three outer discharge holes 41 are in one-to-one correspondence with and are respectively opposite to the pipe orifices of the steam injection pipe sections. Like this by the second spout vapour pipeline section 83 spun steam can be directly spouted to outer discharge hole 41 department, and then can get into inner bag 1 inner chamber through outer discharge hole 41 fast to can avoid steam vortex and reduce the velocity of flow in first support 4, also can avoid the gas portion in each second spouts vapour pipeline section 83 spun steam to a certain extent simultaneously by the comdenstion water in first support 4, improve the utilization ratio of steam. In addition, the design of the outer discharge holes 41 corresponding to the pipe openings of the steam injection pipe sections one by one enables the steam to be uniformly introduced into the liner 1.

In this embodiment, the pipe wall of each steam injection pipe section is respectively provided with a liquid flowing hole 9, and the bottom wall of the first support 4 is provided with a water discharging hole 42. So that the condensed water in each steam jet pipe section can flow into the first bracket 4 through the corresponding liquid flow hole 9 and is discharged outside through the water discharge hole 42. In order to recycle the condensed water discharged from the water discharge hole 42, the condensed water discharged from the water discharge hole 42 can directly drip on the inner bottom surface of the inner container 1, the heating device 6 at the bottom of the inner container 1 directly heats and evaporates, and the generated steam is directly supplemented into the steaming tray 3 of the inner container 1, or the water discharge hole 42 is communicated with a water return hole of the water tank through a pipeline, so that the condensed water is recycled.

In this embodiment, the steam delivery pipe 7 and the two branch pipes 8 thereon form three steam outlet pipes 10, the steam outlet pipes 10 are three at intervals, correspondingly, three steam outlets 21 on the steam generator 2 are also three and correspond to the steam outlet pipes 10 one by one, meanwhile, three first mounting holes 11 and three second mounting holes 12 are also provided and correspond to the steam outlet pipes 10 one by one, similarly, three outer discharge holes 41 are also provided and correspond to the steam outlet pipes 10 one by one, and two outer discharge holes are provided at each position, correspondingly, three steam inlet holes 31 on the steaming tray 3 are also provided, and two steam inlet holes 31 at each position are provided vertically.

The first support 4 and the second support 5 are both in a long-strip block shape and respectively extend along the front and back directions of the inner container 1, the top wall of each support horizontally extends to form a support surface 401 on which the edge of the steaming tray 3 is placed, the outer surface of the side wall of each support is smoothly recessed from top to bottom to form a guide surface 402 which can be tightly attached to the corresponding outer side surface of the steaming tray 3, the support surface 401 and the guide surface 402 of each support are smoothly transited to respectively form a first guide arc surface 403 which is matched with the transition angle between the lower surface of the edge of the steaming tray 3 and the outer side surface of the steaming tray 3, and the guide surface 402 and the bottom surface of each support are smoothly transited to form a second guide arc surface 404 which is matched with the side edge of the bottom of the steaming tray 3. Like this the holding surface 401 of first support 4 and second support 5 respectively with steaming tray 3 about coil along the cooperation, and the spigot surface 402 of first support 4 and second support 5 respectively with steaming tray 3 about the side cooperation, and under the assistance of first direction cambered surface 403 and second direction cambered surface 404 of first support 4 and second support 5, thereby with the leading-in inner bag 1 depths of steaming tray 3, convenience of customers places steaming tray 3 that the load has food in inner bag 1, realize steaming tray 3's accurate placing, promote user's use experience.

In this embodiment, the first bracket 4 and the second bracket 5 are specifically long cover bodies extending in the front-rear direction of the inner container 1 and covering the inner side surface of the inner container 1, the inner bottom surface of the first bracket 4 is recessed downward in the front-rear direction to form a drain groove 43, the drain holes 42 are formed in the wall of the drain groove 43, and the inner bottom surface portions of the first bracket 4 on both sides of the drain groove 43 in the cross section of the first bracket 4 are inclined from top to bottom in the direction of the drain groove 43. The water dropped from the liquid flow holes 9 to the inner bottom surface of the first frame 4 is guided by the inner bottom surface of the first frame 4 to flow into the drainage groove 43 and is discharged through the drainage hole 42 of the drainage groove 43.

Further, a first turbulent arc surface 405 and a second turbulent arc surface 406 corresponding to the first guiding arc surface 403 and the second guiding arc surface 404 are respectively formed in the inner cavity of the first bracket 4, wherein the first turbulent arc surface 405 is respectively opposite to the pipe orifices of the steam injection pipe sections and is located above the outer discharge holes 41. The heat exchange coefficient and parameters (speed, dry-wet state, etc.) of the steam can be improved by providing the first spoiler curved surface 405 and the second spoiler curved surface 406.

Still further, steam inlets 31 corresponding to the outer discharge holes 41 are formed in the side walls of the steaming tray 3 corresponding to the first supports 4, and each steam inlet 31 is opposite to and in fluid communication with the corresponding outer discharge hole 41 (the fluid communication here can be achieved in various ways, that is, when the steam inlet 31 is adjacent to the corresponding outer discharge hole 41, the steam inlet 31 and the corresponding outer discharge hole 41 can be directly communicated, and when the steam inlet 31 is far away from the corresponding outer discharge hole 41, the steam inlet 31 and the corresponding outer discharge hole 41 can be communicated through a pipeline). In this embodiment, each of the outer discharge holes 41 is respectively formed on the side wall where the guide surface 402 of the first bracket 4 is located, so that each of the outer discharge holes 41 is closely attached to the corresponding steam inlet hole 31, and the two are directly communicated with each other, and the first steam injection pipe section 73 is formed by horizontally extending the pipe orifice of the second steam delivery pipe section 72, and the pipe orifice of the first steam injection pipe section 73 is inclined upward by 45 ° with respect to the horizontal plane, meanwhile, the second steam injection pipe section 83 is formed by horizontally extending the pipe orifice of the second branch pipe section 82, and the pipe orifice of the second steam injection pipe section 83 is inclined upward by 45 ° with respect to the horizontal plane, and the included angle formed by the pipe orifice of the steam inlet hole 31 and the outer discharge hole 41 and the horizontal plane is 45 °. Through the design of the specific angle, the jet path of the steam from the pipe orifice of the first steam jet pipe section 73 to the food in the steaming tray 3 can be shortened to the maximum extent, so that the steam sprayed by each steam jet pipe section can be rapidly introduced into the steaming tray 3 for cooking the food, re-acceleration and direct injection of the food are realized, and the utilization rate of the steam is improved to the maximum extent.

In addition, in this embodiment, still be provided with heating device 6 on the top surface and the front and back side of first support 4 respectively, can carry out the secondary heating to the steam that gets into in first support 4 through heating device 6, further reduce the humidity of steam, improve the heat transfer coefficient of steam and food, effectively shorten the culinary art time. In this embodiment, the heating device 6 is a heating film, specifically, a nano metal heating film (the heating efficiency is 98%), and the heating area of the heating film is large, so that the efficiency of the heating device 6 for secondarily heating steam can be improved.

In addition, the inner side of the steaming tray 3 is provided with a turbulent flow projection 32 protruding inwards. The disturbance of steam entering the steaming tray 3 can be promoted by arranging the turbulence lug 32, so that the flow speed of the steam is improved, and the utilization rate of the steam is further improved. Preferably, the burbling protrusions 32 are respectively disposed on the front and rear side walls of the inner container 1 and are formed by inward protrusions at the corresponding positions of the front and rear side walls, and the outer surfaces of the front and rear side walls are respectively formed with a handle slot 33 for fingers to insert and hold. Can lead to the food middle part with steam through vortex lug 32 like this for the steam that gets into steaming tray 3 distributes more evenly, and then realizes the even heating to the food in the steaming tray 3.

The working process of the invention is as follows:

steam generator 2 adds hot water and produces saturated wet steam (be unfavorable for culinary art and user experience, can bring difficult clean, outer row vapor is many, food absorbs the insufficient scheduling problem), and the steam of production is gathered at steam generator 2's interior top surface, and the comdenstion water of formation can directly drip to steam generator 2 in, accomplishes the first condensation (reduction steam humidity) to steam, the direct recycle of the comdenstion water of production.

Steam enters the first steam conveying pipe section 71 of the steam conveying pipe 7 through the steam outlet 21, secondary condensation of the steam is completed due to the inclined design of the first steam conveying pipe section 71, so that the humidity of the steam is further reduced, meanwhile, the steam in the first steam conveying pipe section 71 is divided in each branch flow port 74 and is condensed in the first branch flow pipe section 81 of each branch flow pipe 8, and condensed water generated by condensation flows back to the first steam conveying pipe section 71 along the inner wall surface of each first branch flow pipe section 81 and is converged to the inside of the steam generator 2 along with the condensed water in the first steam conveying pipe section 71, so that the recycling of the condensed water is realized. The steam entering the second steam delivery pipe section 72 of the steam delivery pipe 7 and the second branch pipe section 82 of each branch pipe 8 is condensed again in the corresponding pipe section, so that the humidity of the steam is reduced again, and the generated condensed water drops into the first bracket 4 through the liquid flow hole 9 along the inner wall surface of each pipe section, and the recycling of the condensed water is realized through the water discharge hole 42 at the bottom of the first bracket 4. Through condensation many times like this, it is big to have solved steam humidity, and the insufficient problem of energy utilization has solved the not enough problem of water tank water simultaneously. In addition, the steam entering the steam conveying pipe 7 and the flow dividing pipes 8 can be accelerated for many times through the change of the pipe diameters of the steam conveying pipe 7 and the flow dividing pipes 8, and the speed of conveying the steam from the steam generator 2 to the liner 1 is effectively improved.

The steam sprayed into the first support 4 by each steam spraying pipe section realizes secondary heating under the action of the heating device 6, and the heat exchange coefficient of the steam is improved. Simultaneously through the orificial inclination design of each steam injection pipe section and each mouth of pipe and first vortex cambered surface 405, correspond the mating reaction of outer discharge hole 41 and admission hole 31 for the steam that gets into steaming tray 3 contacts with food vertical (front contact), directly spouts food, has overturned the contact mode of steam with food, improves the utilization ratio of steam, effectively shortens the culinary art time. And the turbulence lug 32 in the steaming tray 3 can promote the disturbance of steam in the steaming tray 3, so that circulating steam (repeatedly heated) is generated in the steaming tray 3, local large steam is realized, and the cooking time is obviously shortened.

Claims

1. A steam heating structure for a cooking device comprises an inner container (1) and a steam generator (2), and is characterized in that supports for placing a steaming tray (3) are respectively arranged on the left inner side surface and the right inner side surface of the inner container (1), the steam generator (2) is arranged outside the inner container (1), the supports comprise first supports (4) corresponding to the steam generator (2), the first supports (4) are of a hollow structure, a first mounting hole (11) is formed in the side wall of the inner container (1), an outer exhaust hole (41) is formed in the side wall of the first supports (4), a steam outlet (21) of the steam generator (2) is communicated with the first mounting hole (11) through a steam conveying pipe (7), and the pipe diameter of the steam conveying pipe (7) is gradually reduced from the steam outlet (21) of the steam generator (2) to the first mounting hole (11),

the steam delivery pipe (7) sequentially comprises a first steam delivery pipe section (71) extending from bottom to top in an inclined way and a second steam delivery pipe section (72) extending from top to bottom in an inclined way along the direction from the steam outlet (21) of the steam generator (2) to the first mounting hole (11) of the inner container (1), the first steam delivery pipe section (71) and the second steam delivery pipe section (72) are smoothly connected,

the pipe orifice of the second steam delivery pipe section (72) is communicated with the first mounting hole (11) of the inner container (1) and extends towards the inside of the first bracket (4) to form a first steam spraying pipe section (73), the pipe orifice of the first steam spraying pipe section (73) is opposite to the outer discharge hole (41) of the first bracket (4),

the steam-steaming plate is characterized by further comprising a steam-steaming plate (3), wherein steam inlets (31) are formed in the side wall of the steam-steaming plate (3), the steam inlets (31) are opposite to and in fluid communication with the outer discharge holes (41) in the first support (4), and pore channels of the steam inlets (31) and the outer discharge holes (41) are inclined from top to bottom along the direction from the outer discharge holes (41) to the steam inlets (31).

2. A steam heating structure as defined in claim 1, wherein the mouth of the first steam delivery pipe section (71) is connected to the steam outlet (21) of the steam generator (2), and the lower end of the mouth edge of the mouth is recessed downwards from the inside to the outside relative to the steam delivery pipe (7) to form a flow guiding arc surface (711) facing the inner cavity of the steam generator (2).

3. A steam heating structure according to claim 1, wherein the first steam injection pipe section (73) is formed by horizontally extending the pipe opening of the second steam delivery pipe section (72), the pipe opening of the first steam injection pipe section (73) is inclined upward by 45 ° with respect to the horizontal plane, and the included angles between the hole passages of the steam inlet hole (31) and the outer row of holes (41) and the horizontal plane are both 45 °.

4. A steam heating structure as claimed in claim 3, wherein the wall of the first steam delivery pipe section (71) is provided with at least one branch opening (74), the side wall of the inner container (1) is provided with second mounting holes (12) which are parallel to the first mounting holes (11) and correspond to the branch openings (74) one by one, each branch opening (74) is communicated with the corresponding second mounting hole (12) through a branch pipe (8), and the pipe diameter of each branch pipe (8) is gradually reduced from the corresponding branch opening (74) to the second mounting hole (12).

5. The steam heating structure as set forth in claim 4, wherein each of the branch pipes (8) comprises a first branch pipe section (81) extending obliquely from bottom to top and a second branch pipe section (82) extending obliquely from top to bottom in sequence along the direction from the branch opening (74) to the corresponding second mounting hole (12), and the first branch pipe section (81) and the second branch pipe section (82) are smoothly connected.

6. The steam heating structure as set forth in claim 5, wherein the second branch pipe section (82) has at least two openings communicating with the second mounting hole (12) of the inner vessel (1) and extending toward the inside of the first frame (4) to form second steam injection pipe sections (83), the at least two outer discharge holes (41) are in one-to-one correspondence with and respectively opposite to the openings of the respective steam injection pipe sections, and the steam inlet holes (31) of the steaming tray (3) are in one-to-one correspondence with the outer discharge holes (41).

7. Steam heating structure according to claim 6, characterized in that the second steam injection pipe section (83) is formed by a horizontal extension of the orifice of the second branch pipe section (82), and the orifice of the second steam injection pipe section (83) is inclined upwards by 45 ° in relation to the horizontal plane.

8. The steam heating structure as claimed in claim 7, wherein the pipe wall of each steam jet pipe section is provided with a liquid flow hole (9), and the bottom wall of the first bracket (4) is provided with a water discharge hole (42).

9. The steam heating structure as set forth in claim 8, wherein the first frame (4) has an elongated shape in the form of a cover body extending in the front-rear direction of the inner vessel (1) and covering the inner side surface of the inner vessel (1), the inner bottom surface of the first frame (4) is recessed downward in the front-rear direction thereof to form a drain groove (43), the drain hole (42) is formed in the wall of the drain groove (43), and the inner bottom surface portions of the first frame (4) on both sides of the drain groove (43) in the cross section thereof are inclined from top to bottom in the direction of the drain groove (43).

10. A steam heating structure as recited in claim 8, characterized in that, in the cross section of the first bracket (4), the top wall of the first bracket (4) extends horizontally to form a supporting surface (401) for placing the rim of the steaming tray (3) on the upper surface, the outer surface of the side wall of the first bracket (4) is recessed smoothly from top to bottom towards the outside to form a guiding surface (402) which can be attached to the corresponding outer side surface of the steaming tray (3), the supporting surface (401) of the first bracket (4) and the guiding surface (402) thereof are smoothly transitioned to form a first guiding arc surface (403) which is matched with the transition angle between the lower surface of the rim of the steaming tray (3) and the outer side surface of the steaming tray (3), and the guiding surface (402) of the first bracket (4) and the bottom surface of the first bracket (4) are smoothly transitioned to form a second guiding arc surface (404) which is matched with the side edge of the bottom of the steaming tray (3), the bracket also comprises a second bracket (5), and the shape of the second bracket (5) is the same as that of the first bracket (4).

11. A steam heating structure as claimed in claim 10, wherein the outer rows of holes (41) are formed in the side walls of the first frame (4), respectively, and the steam inlet holes (31) are formed in the corresponding side walls of the steaming plate (3), and each steam inlet hole (31) corresponds to each outer row of holes (41), respectively.

12. The steam heating structure as claimed in claim 10, wherein the first and second turbulating arcs (405, 406) corresponding to the first and second guiding arcs (403, 404) are formed in the inner cavity of the first bracket (4), wherein the first turbulating arcs (405) are respectively opposite to the nozzles of the steam injection pipe sections, and the first turbulating arcs (405) are located above the outer rows of holes (41).

13. A steam heating structure as claimed in any one of claims 9 to 11, wherein the first support (4) is provided with heating means (6).

14. A steam heating structure as claimed in claim 13, wherein the heating means (6) is a heating film provided on the top wall and front and rear side walls of the first rack (4).

15. Steam heating structure as in claim 1, characterized in that the inner side of the steaming plate (3) is provided with inward-protruding turbulence protrusions (32).

16. The steam heating structure as claimed in claim 15, wherein the turbulence protrusions (32) are respectively provided on the front and rear side walls of the inner container (1) and are respectively formed by inwardly protruding portions corresponding to the front and rear side walls, and grip grooves (33) for fingers to be inserted and held are respectively formed on the outer surfaces of the front and rear side walls.

17. A steaming cooking device having the steam heating structure as claimed in any one of claims 1 to 16.