WO2021175159A1 - 烹饪可视的蒸汽饭煲 - Google Patents

烹饪可视的蒸汽饭煲 Download PDF

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Publication number
WO2021175159A1
WO2021175159A1 PCT/CN2021/078093 CN2021078093W WO2021175159A1 WO 2021175159 A1 WO2021175159 A1 WO 2021175159A1 CN 2021078093 W CN2021078093 W CN 2021078093W WO 2021175159 A1 WO2021175159 A1 WO 2021175159A1
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WO
WIPO (PCT)
Prior art keywords
steam
transparent window
pot
cover
rice cooker
Prior art date
Application number
PCT/CN2021/078093
Other languages
English (en)
French (fr)
Inventor
朱泽春
杨宁宁
孙正武
张岱
于凌振
邱雄杰
于文强
李扬
胡益民
Original Assignee
九阳股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202020256370.2U external-priority patent/CN212213419U/zh
Priority claimed from CN202020785234.2U external-priority patent/CN212912774U/zh
Priority claimed from CN202020794228.3U external-priority patent/CN212912775U/zh
Priority claimed from CN202020783980.8U external-priority patent/CN212878907U/zh
Priority claimed from CN202010400311.2A external-priority patent/CN113243756B/zh
Priority claimed from CN202010400297.6A external-priority patent/CN113243755B/zh
Priority claimed from CN202020784077.3U external-priority patent/CN212912742U/zh
Application filed by 九阳股份有限公司 filed Critical 九阳股份有限公司
Publication of WO2021175159A1 publication Critical patent/WO2021175159A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00—Cooking-vessels
    • A47J27/04—Cooking-vessels for cooking food in steam; Devices for extracting fruit juice by means of steam ; Vacuum cooking vessels

Definitions

  • This application relates to the field of kitchen cooking appliances, in particular to a steam rice cooker with visible cooking.
  • the steam rice cooker uses pure steam heating or a heating method that combines steam heating with traditional electromagnetic induction, heating plate, etc., to achieve cooking.
  • Most of the steam rice cookers disclosed in the prior art are compatible with traditional rice cookers, electric pressure cookers and other cooking appliances. There is a problem that the cooking is not visible, the user cannot feel the cooking process of the food, has no sense of participation, and cannot further enhance the user's cooking experience.
  • the technical problem to be solved by this application is to overcome the shortcomings of the prior art and propose a steam rice cooker with visible cooking.
  • the steam rice cooker with visible cooking includes a pot body, a pot cover and an inner pot, the pot cover is closed on the pot body and defines a cooking cavity with the inner pot, and the pot body is provided with a steam generator
  • the steam generated by the steam generator is passed into the inner container for heating food
  • the inner container is a transparent inner container
  • the pot body is provided with a first transparent window surrounded by the first transparent window
  • the inner pot is within the height range of the inner pot;
  • the pot cover is provided with a second transparent window, and the light entering the cooking cavity from the first transparent window and the second transparent window complements each other to Observe the cooking state in the cooking cavity through the first transparent window or the second transparent window.
  • the user when cooking, the user can observe the cooking state of the food in the inner pot from the side of the pot body through the first transparent window on the outer cover, especially the bottom food that cannot be observed from the perspective of the pot cover, and lift Cooking experience; the horizontal projection of the first transparent window is all located on the side of the inner container, and the visible area defined by the first transparent window is concentrated on the side of the inner container to prevent other structural parts of the pot body from being exposed in the transparent window and affecting the visual effect.
  • the light entering the cooking cavity by the first transparent window and the second transparent window complement each other, which can enhance the visual effect.
  • the cooking state of the food in the cooking cavity may not be clearly seen due to insufficient light, reflection of the window, etc., but when the pot body
  • the first transparent window is set, the light from the first transparent window entering the cooking cavity is used as a supplement, so that the cooking cavity has better visual conditions, and the visual effect is improved. This is also true when only the first transparent window is installed on the pot body. in this way.
  • Fig. 1 is a schematic diagram of the three-dimensional structure of the steam rice cooker in the first embodiment of the application
  • FIG. 2 is a schematic diagram of an exploded view of the body of the steam rice cooker in the first embodiment of the application;
  • FIG. 3 is a schematic diagram of the structure of the steam rice cooker in the first embodiment of the application.
  • Figure 4 is a top view of the outer cover of the steam rice cooker in the first embodiment of the application.
  • Figure 5 is a schematic cross-sectional view of the steam rice cooker in the first embodiment of the application.
  • Fig. 6 is a partial enlarged view of A in Fig. 5;
  • Figure 7 is an exploded schematic diagram of the steam rice cooker in the second embodiment of the application.
  • FIG. 8 is a schematic cross-sectional view of the steam rice cooker in the second embodiment of the application.
  • Fig. 9 is an exploded schematic diagram of the water tank of the steam rice cooker in the second embodiment of the application.
  • Figure 10 is a front view of the steam rice cooker in the first embodiment of the application.
  • Figure 11 is a left side view of the steam rice cooker in the first embodiment of the application.
  • Figure 12 is a right side view of the steam rice cooker in the first embodiment of the application.
  • FIG. 13 is a schematic diagram of the base structure of the steam rice cooker in the first embodiment of the application.
  • FIG. 14 is a schematic diagram of the three-dimensional structure of the steam rice cooker in the third embodiment of the application.
  • 15 is a schematic cross-sectional view of the steam rice cooker in the third embodiment of the application.
  • Fig. 16 is a partial enlarged view of B in Fig. 15;
  • Fig. 17 is a partial enlarged view of C in Fig. 15;
  • Fig. 18 is a partial enlarged view of D in Fig. 15;
  • 19 is a schematic diagram of the outer bracket structure of the pot cover in the third embodiment of the application.
  • Fig. 20 is a schematic diagram of the internal structure of the pot cover in the third embodiment of the application (without the inner cover).
  • 200 pot cover 201 movable buckle, 210 second transparent window, 211 first light transmission area, 212 second light transmission area, 220 transparent cover, 221 outer cover, 222 inner cover, 223 first heat insulation layer, 224 Visual area, 225 first insulation gap, 226 second insulation gap, 227 third insulation gap, 230 decorative cover, 231 shielding part, 240 handle, 250 steam input pipeline, 251 gas transmission channel, 252 Inlet passage, 253 docking passage, 254 first interface, 255 second interface, 260 outer bracket, 261 outer bracket body, 262 connecting arm, 270 inner bracket, 271 inner bracket body, 272 inner shielding part;
  • the visible cooking steam rice cooker proposed in the first embodiment of the present application includes a pot body 100, a pot cover 200 and an inner pot 300 accommodated in the pot body 100.
  • the pot body 100 is provided with The steam generator, the steam generated by the steam generator is passed into the inner container 300 for heating food.
  • the steam rice cooker of this embodiment has a split structure, that is, the cooker cover 200 can be detachably covered on the cooker body 100, which increases user convenience, such as facilitating the independent cleaning of the cooker cover 200.
  • the pot cover 200 to the pot body 100 form a steam pipeline connecting the steam generator and the inner container 300, and the steam generated by the steam generator is delivered to the inner container 300 through the steam pipeline Heat the food.
  • the pot body 100 of this embodiment includes a base 120, a mounting frame 130, and an outer cover 110 installed therebetween.
  • the base 120, the mounting frame 130 and the outer cover 110 surround In the accommodating cavity 1401, the outer cover 110 is provided with a first transparent window 1101 that can see through into the accommodating cavity 1401.
  • the inner container 300 is a transparent inner container and is placed in the accommodating cavity 1401. During cooking, the user can observe the cooking state of the food in the inner pot 300 from the side of the pot body 100 through the first transparent window 1101 on the outer cover 110, especially the bottom food that cannot be observed from the perspective of the pot cover 200, which enhances the cooking experience.
  • the base 120 is the main load-bearing component of the cooker body 100, which supports the outer cover 110 and the inner liner 300 to ensure the structural strength of the whole machine.
  • the mounting frame 130 prevents the lid 200 from being directly pressed on the outer cover 110 when the lid 200 is closed, so as to better protect the outer cover 110. Since the base 120, the mounting frame 130 and the outer cover 110 are all independent components, there are more choices in product design. For example, the thickness of the outer cover 110 and the mounting frame 130 can be adjusted according to actual needs, and the two do not affect each other.
  • the base 120, the mounting frame 130, and the outer cover 110 can also be made of different materials according to actual needs, so as to better meet the product modeling requirements.
  • the base 120 includes a base body 121 and a column 122 extending upward from the base body 121.
  • the base body 121 and the column 122 are integrally formed to improve the structural strength of the base 120.
  • the outer cover 110 is supported on the base body 121 and connected with the pillar 122 to form a circumferentially closed structure.
  • the circumferential closed structure ensures the integrity of the circumferential appearance of the pot body 100 and reduces the heat loss of the inner pot 300.
  • the outer cover 110 with the first transparent window 1101 is relatively weak.
  • the connection of the outer cover 110 and the column 122 can ensure that the circumferentially closed structure still has enough strength to support the pot cover 200, preventing the outer cover 110 from bearing the full weight of the pot cover 200. Deformation risk.
  • the base body 121 is provided with a positioning groove 124 matching the outer cover 110, and the bottom of the outer cover 110 is inserted into the positioning groove 124.
  • the positioning groove 124 is also set in an arc shape that matches the outer cover 110. Both ends of the positioning groove 124 extend to the uprights 122.
  • the two circumferential ends of 110 are matched with the uprights 122 to circumferentially close the accommodating cavity 1401, that is, the above-mentioned circumferential closed structure.
  • the mating fit of the base body 121 and the outer cover 110 facilitates the disassembly and assembly between the two, and can avoid the problem of warping of the bottom of the outer cover 110.
  • the outer cover 110 is provided with a limit hook 111 at both ends in the circumferential direction
  • the column 122 is provided with a limit card slot 123 corresponding to the limit hook 111
  • the limit hook 111 is inserted in the limit position from top to bottom Inside the card slot 123.
  • the limit hook 111 and the limit card slot 123 are in an L shape that cooperates with each other
  • the limit hook 111 is provided on the upper part of the two circumferential ends of the outer cover 110
  • the limit card slot 123 is provided at the two ends of the column 122 in the circumferential direction.
  • Upper part
  • the installation position of the outer cover 110 is determined by the cooperation of the limit hook 111 and the limit slot 123, and then the bottom of the outer cover 110 is inserted into the positioning slot 124.
  • the limit hook 111 is inserted into the limit card slot 123 to limit the relative movement of the outer cover 110 and the column 122 in the circumferential direction, so as to avoid warping deformation of the end of the outer cover 110 and the assembly gap change caused by the warping deformation. Big problem.
  • this assembly structure facilitates the disassembly and assembly of the outer cover 110 and the base 120.
  • the outer cover 110 can also be fixed on the base 120 by connecting methods such as screws and buckles.
  • the mounting frame 130 covers the upper end of the outer cover 110 and the upper end of the column 122, and the cover 110 and the column 122 jointly support the mounting frame 130.
  • the column 122 can support the mounting frame 130 at the same time, so that the mounting frame 130 can be effectively supported throughout the entire circumference, so that the pressure applied to the mounting frame 130 when the lid 200 is closed is transmitted to the outer cover 110 and the column 122, respectively, to prevent the mounting frame 130 from being affected.
  • the uneven force increases the risk of deformation, and it also prevents the outer cover 110 from bearing the full weight of the pot cover 200 to increase the risk of deformation.
  • the first transparent window 1101 is arranged along the entire circumference of the outer cover 110.
  • the outer cover 110 is an arc-shaped structure with a central angle ⁇
  • the first transparent window is also an arc-shaped structure with a central angle ⁇ on the outer cover 110, making full use of the space of the outer cover 110 and expanding the first transparent window.
  • the visible area of the transparent window achieves the effect that the outer cover 110 is visible all around.
  • the outer cover 110 is a transparent piece, such as a transparent glass piece, and the outer cover 110 as a whole constitutes the first transparent window 1101, which maximizes the first transparent window 1101 on the outer cover 110 and improves the user's cooking visualization experience and product aesthetics.
  • the outer cover 110 described in the present application is provided with a first transparent window 1101.
  • the outer cover 110 may partially constitute the first transparent window 1101.
  • the outer cover 110 is assembled from a transparent cover body and a non-transparent cover body or is injection molded into an integrated structure.
  • the transparent cover body forms the first transparent window 1101; it is also possible that the outer cover 110 completely constitutes the first transparent window 1101, for example, the outer cover 110 is entirely made of a transparent material.
  • the mounting frame 130 may also be a transparent piece. In this way, in the appearance of the pot body 100, the mounting frame 130 and the outer cover 110 have an integrated visual effect, which not only increases the visible area of the pot body 100, but also makes the shape of the pot body 100 more beautiful.
  • the first transparent window 1101 of this embodiment includes a window body 103 and at least two reinforcing ribs 112 arranged circumferentially on the inner circumferential surface of the window body 103 to improve the support strength of the window body 103 Therefore, the window body 103 can be made larger and thinner while reducing the risk of deformation and cracking.
  • the main viewing area 113 and the extended viewing area 114 located on both sides of the main viewing area 113 are separated by the above-mentioned at least two reinforcing ribs 112.
  • the viewing area of the main viewing area 113 is larger than the viewing area of the extended viewing area 114.
  • the side surface of the base 120 is provided with an operation panel 126 corresponding to the position of the main viewing area 113.
  • the main viewing area 113 has the largest viewing area and there is no visual interference from the rib 112.
  • the operation panel 126 on the side of the base 120 is set corresponding to the main viewing area 113, the user needs to perform cooking operations at the position facing the main viewing area 113.
  • the cooking state of the food in the inner tank 300 can be observed through the main viewing area 113, which not only obtains a good operation and visual experience, but also reduces the probability of misoperation; the extended viewing areas 114 on both sides of the main viewing area 113 are increased
  • the overall viewing area of the window body 103 realizes multi-angle visibility in the circumferential direction of the pot body 100.
  • the user can observe the cooking state of the food in the inner pot from the side of the pot body through the first transparent window on the outer cover, especially the bottom food that cannot be observed from the perspective of the pot lid, thereby enhancing the cooking experience.
  • At least two reinforcing ribs 112 are provided on the window body 103 of the first transparent window 1101 to increase the support strength of the window body, so that the window body can be made larger and thinner while reducing the risk of deformation and cracking.
  • the window body 103 is separated by at least two stiffeners 112 into the main viewing area and the extended viewing area located on both sides of the main viewing area.
  • the main viewing area has The largest viewing area without the visual interference of the rib 112.
  • the operation panel on the side of the base When the operation panel on the side of the base is set corresponding to the main viewing area, the user needs to perform cooking operations at the position facing the main viewing area, and the main viewing area can also be used while operating Observe the cooking state of the food in the inner tank, which not only obtains a good operation and visual experience, but also reduces the probability of misoperation; the extended viewing area on both sides of the main viewing area increases the overall viewing area of the window body and realizes the circumferential direction of the pot body Visibility from multiple angles of direction.
  • the reinforcing rib 112 of this embodiment has a connecting portion 116 extending from the bottom end of the window body 103, and the connecting portion 116 is fixedly connected to the base 120.
  • the connecting portion 116 is provided to facilitate the installation and fixation of the first transparent window 1101 on the base 120, and the connecting portion 116 is arranged on the reinforcing rib 112 to avoid damage to the window body when the first transparent window 1101 is disassembled and assembled.
  • a positioning hole is provided in the positioning groove 124 of the base body 121.
  • the connecting portion 116 When the bottom of the first transparent window 1101 is inserted into the positioning groove, the connecting portion 116 is inserted into the positioning hole, and the screw penetrates upward through the positioning hole and is locked in the connecting portion 116 , The first transparent window 1101 is fixed on the base 120.
  • the first transparent window 1101 further includes a supporting platform 117 extending from the top of the window body 103 toward the center of the accommodating cavity 1401, and the mounting frame 130 bears a load on the supporting platform 117.
  • the supporting platform 117 increases the load-bearing area of the first transparent window 1101 to the mounting frame 130 and reduces the force on the window body 103.
  • the thickness of the support platform 117 decreases in its extending direction.
  • the upper surface of the support platform 117 is kept horizontal, and the lower surface of the support platform 117 is from the root position (that is, the support platform 117 extends from the upper end of the window body 103).
  • the starting position extending toward the center of the accommodating cavity 1401) is inclined from low to high toward the free end to form a triangular support structure to increase the support strength of the support platform 117, especially the strength of the root position of the support platform 117, so as to avoid the root position
  • the stress concentration causes the support platform 117 to deform.
  • a pair of handles 310 are provided on the upper end of the side wall of the liner 300, and the mounting frame 130 is provided with a handle groove 131 for placing the handles 310.
  • the mounting frame 130 The support handle 310 keeps the inner container 300 in a suspended state, and therefore, the position of the window body 103 corresponding to the handle groove 131 is subjected to greater pressure than other parts.
  • a reinforcing rib c and a reinforcing rib d are provided on the window body 103 at positions corresponding to the handle groove 131.
  • the area between the reinforcing rib c and the reinforcing rib d on the window body 103 corresponds to a central angle of 180°, and the reinforcing rib c
  • the and reinforcing ribs d are located directly below the corresponding handle groove 131 to avoid local deformation of the window body 103 due to excessive force.
  • the base 120 includes an inner liner heat-insulating seat 1201 and a base shell 1202 arranged around the inner liner heat-insulating seat 1201.
  • the inner liner 300 is not in contact with the outer cover 110 and the base 120, and there is a gap between the bottom of the inner liner 300 and the inner liner heat-insulating seat 1201.
  • the gap plays a role of heat insulation and reduces the temperature resistance of the material of the inner liner heat-insulating seat 1201 sexual requirements.
  • the bottom of the inner liner can also be supported on the inner liner heat-insulating seat.
  • the inner liner heat-insulating seat and the base shell are integrally formed with good load-bearing capacity. When the inner liner heat-insulating seat supports the bottom of the inner liner, The bile is placed more smoothly.
  • the pot cover 200 covers the pot body 100 and defines a cooking cavity with the inner pot 300.
  • the pot body 100 is provided with a steam generator for supplying steam to the cooking cavity, and the inner pot 300 is a transparent inner pot.
  • the pot body 100 is provided with a first transparent window 1101.
  • the pot cover 200 is provided with a second transparent window 210, and the light entering the cooking cavity from the first transparent window 1101 and the second transparent window 210 complement each other, so as to better pass through the first transparent window 1101 or the second transparent window 1101 or the second transparent window 210.
  • the transparent window 210 observes the cooking state in the cooking cavity.
  • This application completely uses steam heating, which is different from the non-steam heating in the prior art. From the beginning of the application, there is a large amount of hot steam in the cooking cavity.
  • the diffuse steam makes a large number of water droplets adhere to the first transparent window. Affect the visual effect. For this reason, a second transparent window is provided on the lid. Although the second transparent window will affect the visual effect due to the diffuse steam at first, it is liquefied on the first transparent window and the second transparent window.
  • the small water droplets can transmit light, so compared with only the first transparent window, the amount of light transmitted is increased. Therefore, the light can be supplemented by the visible windows in different directions to reduce the impact of steam on the visual effect.
  • the complementary light can also overcome the problem of poor visual effects in different placement environments.
  • the front side (i.e. front) and top side (i.e. top side) of the pot body are facing the user
  • the rear side i.e. back
  • the left and right sides are located on the left and right sides of the user.
  • the first and second transparent The window is supplemented with light to improve the visual effect, so that no matter from which angle the inner tank is viewed, the other window can supplement the light, avoiding the situation that the cooking state of the inner tank is not clearly seen.
  • the second transparent window 210 is provided with a first light-transmitting area 211 and a second light-transmitting area 212.
  • a part of the main viewing area and the second light-transmitting area are arranged close to the left or right side or the left and right sides of the pot body, that is, set on the pot cover and close to a part of the extended viewing zone.
  • the light supplement effect is negligible, and it can be decided whether to set the light-transmitting area in this part according to the actual situation. In this way, the light in the front direction acquired by the first transparent window is added to realize the mutual complement of the light, so that the user can observe the cooking cavity from any side, and the visual effect is better.
  • the first transparent window includes a main viewing zone 113 and an extended viewing zone 114 located on both sides of the main viewing zone, and the visible area of the main viewing zone is larger than the visible area of the extended viewing zone.
  • the first transparent window is located on the front side of the pot body, and when the pot body is placed normally, the front side is mostly an open space, which is not easy to be blocked, so it has a greater effect of supplementing light.
  • an extended viewing area is set to improve the viewing angle effect under different viewing angles.
  • the pot body 100 includes a base 120 and an outer cover 110.
  • the base 120 and the outer cover 110 enclose a accommodating cavity 1401 for accommodating the inner liner 300, and the outer cover 110 partially or entirely constitutes the first transparent window 1101, which is designed in this way,
  • the outer cover 110 not only constitutes a part of the outer appearance surface of the pot body 100 in the circumferential direction, but also constitutes a part or all of the first transparent window 1101, which simplifies the structure of the pot body 100 and reduces the cost.
  • the pot body 100 is also provided with a water tank 150 for supplying water to the steam generator, the base body 121 supports the water tank 150, and the side of the water tank 150 is hung on the pillar 122 for fixing.
  • the outer cover 110 when the outer cover 110 partially constitutes the first transparent window 1101, the outer cover 110 can be assembled from a transparent cover body and a non-transparent cover body or injection molded into an integral structure, for example, a mounting hole is provided on the non-transparent cover body, and the transparent cover body The body is assembled in the mounting hole to form a first transparent window 1101; when the outer cover 110 completely constitutes the first transparent window 1101, the outer cover 110 is entirely made of a transparent material.
  • the second transparent window 210 when the second transparent window 210 is provided on the pot cover 200, all the plane parts of the pot cover 200 can be made into the second transparent window 210 to achieve the effect that the top is visible all around, or it can be a pot cover.
  • 200 is provided with a mounting hole, and a transparent material is assembled in the mounting hole to form a second transparent window 210.
  • the second transparent window 210 may have a single-layer structure or a multi-layer composite structure of two or more layers.
  • the first transparent window 1101 provided on the body 100 allows the user to observe the cooking state of the food in the cooking cavity from the side of the body 100, especially the bottom food that cannot be observed from the top view angle.
  • the second transparent window 210 provided on the cooker cover 200 allows the user to observe the cooking state of the food surface in the cooking cavity from the top of the cooker body 100, thereby achieving the visual effect of multi-angle cooking on the top and sides of the steam rice cooker.
  • the light entering the cooking cavity by the first transparent window 1101 and the second transparent window 210 complement each other, which can enhance the visual effect.
  • the cooking state of the food in the cooking cavity may not be clearly seen due to insufficient light, reflection of the window, etc., but when the pot body 100 is provided with the first transparent window 1101, the light from the first transparent window 1101 entering the cooking cavity is used as a supplement, so that the cooking cavity has better visual conditions and enhances the visual effect. The same is true when the user observes through the first transparent window 1101.
  • the viewing angle ⁇ of the first transparent window 1101 in the circumferential direction of the pot body 100 is greater than or equal to 180°, that is, the first transparent window 1101 covers the circumferential direction of the pot body 100.
  • the angle is greater than or equal to 180°.
  • the outer cover 110 of this embodiment is in the shape of an arc.
  • the first transparent window 1101 is also in the shape of an arc, and the viewing angle ⁇ is the first transparent window.
  • the transparent window 1101 corresponds to the central angle of the center of the circumference where the outer cover 110 is located.
  • the viewing angle ⁇ of the first transparent window 1101 in the circumferential direction of the pot body 100 is greater than or equal to 180°, the side of the pot body 100 obtains a wider visual angle in the circumferential direction, because the inner pot 300 is mostly cylindrical
  • the viewing angle ⁇ is 200° to 260°.
  • the outer cover 110 has low strength and is easily deformed by impact or heat. In order to take into account both visualization and mechanical strength, the visibility is limited.
  • the angle ⁇ is 200°-260°, optionally, ⁇ is 200°, 210°, 220°, 230°, 240°, 250°, 260°.
  • the window body 103 has an arc-shaped structure with a central angle ⁇ greater than 180°.
  • the side of the pot body 100 has a wider viewing angle in the circumferential direction, which can further expand the main viewing area 113. It can extend the extended viewing area 114 to opposite sides of the pot body 100, and the user can also observe the cooking state of the food in the inner pot 300 on the opposite sides of the pot body 100.
  • the inner circumferential surface of the window body 103 is provided with ribs 112 at intervals in the circumferential direction.
  • the ribs 112 include at least rib a and rib b.
  • the area between the rib a and the rib b on the window body 103 is the main viewing area 113 ,
  • the area on the window body 103 between the rib a and the left end of the window body 103 is the expanded view zone 114 on the left, and the area on the window body 103 between the rib b and the right end of the window body 103 is the expanded view on the right. District 114.
  • the reinforcing rib a and the reinforcing rib b extend vertically from the top end of the window body 103 to the bottom end of the window body 103.
  • the direction of the force is consistent with the height direction of the window body 103, and the reinforcing rib 112 is formed by the window body 103
  • the top end vertically extends to the bottom end of the window body 103, so that the window body 103 can be effectively supported by the reinforcing rib 112 in the height direction.
  • the central angle ⁇ of the main viewing zone 113 is 90°-180°.
  • the central angle ⁇ of the main viewing area 113 is less than 90°, the viewing area of the main viewing area 113 is too small, and it is easy to be interfered by the above-mentioned reinforcing ribs a and b.
  • the central angle ⁇ of the main viewing area 113 is greater than 180° , The rib a and rib b are too far apart, weakening the support strength of the main viewing area 113, so the central angle ⁇ of the main viewing area 113 is limited to 90° ⁇ 180°, and the optional central angle ⁇ is 90°, 100° , 110°, 120°, 150°, 160°, 180°.
  • reinforcing ribs can be provided according to the size of the visible area of the first transparent window and the support strength requirements.
  • the first transparent window 1101 extends symmetrically to both sides of the pot body 100 at the center of the front side of the pot body 100.
  • the first transparent window 1101 The viewing area of the window 1101 on both sides of the pot body 100 is the same, achieving a good symmetrical vision.
  • the pot body 100 also has a left-right symmetrical appearance.
  • the first transparent window is arranged around the inner container and the first transparent window 1101 is within the height range of the inner container 300, and the horizontal projection of the first transparent window 1101 is all located at On the side of the inner container 300, the visible area defined by the first transparent window 1101 is concentrated on the side of the inner container 300 to prevent other components inside the pot body 100 from being exposed in the first transparent window 1101 and affecting the visual effect.
  • the base body 121 is provided with a groove 125 matching the bottom of the inner liner 300, and the bottom of the inner liner 300 sinks into the groove 125, so that the inner liner 300 is placed on the base 120 more stably.
  • the first transparent window is arranged around the inner liner, and the first transparent window may surround the entire inner liner circumferentially, or it may be a part of the first transparent window circumferentially surrounding the inner liner.
  • that the first transparent window 1101 is within the height range of the inner container 300 means that the bottom wall of the inner container 300 is lower than the lower edge of the first transparent window 1101, and the mouth of the inner container 300 is higher than the upper edge of the first transparent window 1101 . In this way, when the user is observing at the side position of the pot body 100, the cooking state of the food in the inner container 300 can be observed by looking up or down the first transparent window 1101.
  • the visible distance of the first transparent window 1101 in the height direction of the pot body 100 is L
  • the height of the pot body 100 is H
  • 1/3H ⁇ L ⁇ 2/3H is the visible distance L here is the diameter of the first transparent window for the circular first transparent window, and the height of the first transparent window for the rectangular first transparent window.
  • the visible distance L is less than When the height H of the body 100 is 1/3, the visible area formed by the side of the pot body 100 is too narrow, which is not conducive to user observation, and the supplementary light effect of the second transparent window 210 is also greatly weakened; when the visible distance L exceeds the pot body 100
  • the height H of the body 100 is 2/3, not only the structural strength of the boiler body 100 cannot be guaranteed, but also the height of the space left for the boiler body 100 to install other devices is insufficient, and the volume of the boiler body 100 needs to be increased.
  • the pot cover 200 includes a transparent cover 220 (for example, a glass cover, a transparent plastic cover, etc.) and a decorative cover 230.
  • the decorative cover 230 is usually made of a non-transparent material. And it surrounds the edge of the transparent cover 220 for protecting the transparent cover 220, and the exposed part of the transparent cover 220 constitutes the second transparent window 210.
  • This design greatly increases the visible area of the pot cover 200, achieving the effect that the pot cover 200 is visible throughout the week.
  • the user can observe the cooking state of more food in the cooking cavity through the second transparent window 210, which improves the user's cooking. Visual experience.
  • the boiler body 100 is also provided with a steam output pipe 410 connected to the steam generator 400, and the boiler cover 200 is provided with a steam input pipe 250, when When the pot cover 200 is closed on the pot body 100, the steam output line 410 and the steam input line 250 are connected, and the steam generated by the steam generator 400 is delivered to the inner liner 300 through the steam output line 410 and the steam input line 250 Heat food in medium.
  • the center of the pot cover 200 is also provided with an air inlet channel communicating with the cooking cavity, and the steam input pipeline 250 on the pot lid 200 is in communication with the air inlet channel.
  • the decorative cover 230 is provided with a shielding portion 231 extending toward the center of the pot cover 200.
  • the shielding portion 231 covers the transparent cover 220 to shield the steam pipeline.
  • a handle 240 is installed in the center of the pot cover 200 to block the air inlet channel and facilitate the user to take and place the pot cover.
  • the base 120 includes an inner liner heat-insulating seat 1201 and a base shell 1202 arranged around the inner liner heat-insulating seat 1201, and the outer cover 110 is mounted on the base shell 1202 to enclose
  • the inner liner 300 is a transparent inner liner 300 and is placed in the accommodating cavity 1401.
  • the base 120 is the main load-bearing component of the pot body 100, which directly or indirectly supports structural components such as the outer cover 110 and the inner liner 300, and ensures the structural strength of the whole machine.
  • the inner tank heat insulation seat 1201 and the base shell 1202 adopt an integrated structure, which increases the load-bearing capacity of the base 120 and improves the structural strength of the whole machine.
  • the base shell 1202 includes an annular shell 1203 arranged around the inner insulation seat 1201 and an upright shell 1204 extending upward from one side of the annular shell 1203.
  • the outer cover 110 is supported on the annular shell 1203 and It is connected with the upright housing 1204 to form a circumferentially closed structure.
  • the circumferential closed structure ensures the integrity of the circumferential appearance of the pot body 100, and reduces the heat loss of the inner pot 300; the outer cover 110 with a transparent window is relatively weak, and the outer cover 110 and the upright shell 1204 are connected to ensure circumferential sealing
  • the structure still has enough strength to support the pot cover 200 to prevent the outer cover 110 from bearing the full weight of the pot cover 200 and increase the risk of deformation.
  • the inner insulation seat 1201 When the steam rice cooker is cooking, since the inner insulation seat 1201 is located under the inner pot 300, the inner insulation seat 1201 insulates the heat radiation from the bottom of the inner pot 300 to the inner space of the base 120, effectively alleviating the radiation temperature rise in the inner space of the base 120,
  • the electronic devices (such as circuit boards, etc.) in the base 120 are prevented from working in a high temperature environment for a long time, and the working safety and service life of the electronic devices are increased.
  • the outer cover 110 is provided with a transparent window, in order to prevent other devices in the pot body 100 from being exposed in the transparent window and affecting the visual effect, these devices can be installed inside the base 120, for example, a steam generator 400 is arranged in the annular shell 1203, and the steam output pipeline 410 is arranged in the vertical shell 1204, which not only prevents the steam generator 400 and the steam output pipeline 410 from being exposed in the transparent window of the outer cover 110, but also reduces steam The heat loss when passing through the steam output line 410.
  • the steam rice cooker of this embodiment includes a pot body 100 and an inner pot 300.
  • the pot body 100 has a steam generator for supplying steam to the inner pot.
  • the pot body 100 includes a base 120 and a water tank mounted on the base 120. 150.
  • the water tank 150 and the base 120 enclose a accommodating cavity with an open top, the inner bladder is placed in the accommodating cavity, and the water tank 150 is arranged around the inner bladder.
  • the steam rice cooker of this embodiment is equivalent to replacing the water tank 150 outside the base of the cooker shell.
  • the arrangement of the water tank 150 makes full use of the circumferential space of the cooker body 100, and the water tank 150 serves as a storage tank.
  • the water container is also used to form the outer surface of the pot body 100 in the circumferential direction, so that the water tank 150 obtains a larger water storage space without increasing the volume of the pot body, so as to meet the water demand for steam cooking; at the same time, it can save
  • the middle ring and other structural parts of the pot body shell in the prior art are removed, the pot body structure is simplified, and the cost is reduced.
  • the heat emitted from the inner tank 300 can be used by the water tank 150, that is, the heat emitted from the inner tank preheats the water in the water tank 150 and raises the initial temperature of the water in the water tank 150. This speeds up the steam generation efficiency and saves energy. Since the water in the water tank 150 absorbs most of the heat, it is equivalent to an insulation layer between the inner tank and the outer side wall 151 of the water tank. The outer side wall 151 of the water tank still maintains a low temperature rise after the rice cooker is cooked for a long time. It is beneficial to extend the life of the water tank 150 and has a better anti-scalding effect.
  • the water tank 150 of this embodiment has a non-closed ring structure, such as a C-shaped structure.
  • One side of the water tank 150 ie, the open side of the C-shaped structure
  • the formed internal space is connected with the outer space of the water tank 150.
  • a first upright 1221 is provided on one side of the base 120. It forms a circumferential closed space (the gap between the two joints is negligible), that is, the water tank 150 and the first column 1221 cooperate to form a full circle structure.
  • the cooperation here can be understood as the first upright 1221 is fully or partially embedded in the first giving way portion 153, which weakens the influence of the first upright 1221 on the appearance of the pot body 100, and serves to position the water tank 150 during the assembly and use of the water tank 150.
  • the central angle of the water tank 150 is greater than 180°, such as 250°, 270°, etc., on the round structure formed by the cooperation of the water tank 150 and the first column 1221.
  • the first relief portion 153 is filled by the first upright 1221, so that most of the outer appearance surface of the pot body 100 in the circumferential direction is constituted by the outer side wall 151 of the water tank.
  • the base 120 is further provided with a second upright 1222, the first upright 1221 and the second upright 1222 are respectively located on opposite sides of the base 120, and the pot cover 200 is buckled on the second upright 1222 when the lid 200 is closed.
  • one end of the pot cover 200 in the circumferential direction is a hinged end, and the other end of the hinged end is provided with an opening button (not shown in the figure) and a movable buckle 201.
  • the upper end of the second column 1222 is provided with the movable buckle 201 Snapped fixed buckle 101.
  • the movable buckle 201 and the fixed buckle 101 are buckled together, thereby locking the pot cover 200 in the closed state; the movable buckle 201 and the fixed buckle can be released by pushing the open button 101's buckled state enables opening of the lid.
  • the water tank 150 is provided with a second relief portion 154 that cooperates with the second upright 1222, and the second relief portion 154 is formed by a recessed inner side wall 152 of the water tank.
  • the cooperation here can be understood as the second upright 1222 is fully or partially embedded in the second giving way portion 154, which weakens the influence of the second upright 1222 on the appearance of the pot body 100, and serves to position the water tank 150 during the assembly and use of the water tank 150. The role of.
  • the pot lid is buckled on the water tank with the lid closed.
  • a fixed buckle that can be buckled with the movable buckle is provided on the upper end of the inner side wall of the water tank, so that the pot lid can be directly buckled.
  • no additional buckling structure is needed on the base.
  • the water tank 150 and the base 120 are arranged separately, and the water tank 150 is detachably placed on the base 120.
  • the bottom of the water tank 150 is provided with a ring-shaped positioning rib 155 along the circumferential direction of the water tank 150.
  • the ring-shaped positioning rib 155 can be provided along the outer edge of the bottom of the water tank 150.
  • the base 120 is provided with a ring-shaped positioning step 102 matching the ring-shaped positioning rib 155 on the outer periphery.
  • the bottom of the water tank 150 is supported on the upper surface of the base 120, and the annular positioning ribs 155 are supported on the annular positioning step 102 of the base 120 to ensure that the water tank 150 will not shake randomly, and the annular positioning ribs 155
  • the outer peripheral surface is flush with the outer peripheral surface of the base 120 in the vertical direction, achieving an integrated visual effect.
  • the pot cover 200 is supported on the water tank 150 with the cover closed. Specifically, when the pot cover 200 is closed, it can cover part or all of the upper surface of the water tank 150.
  • the weight of the pot cover 200 is used to hold the water tank 150 to prevent the water tank 150 from moving up and down; the water tank 150 also replaces the central ring of the prior art. It has the function of stably supporting the pot cover 200.
  • the water tank can be completely fixed on the base by means of screws, bonding, ultrasonic welding, etc., and cannot be disassembled; or the water tank and the base can be made into an integrated structure.
  • the water tank 150 includes a water tank body 156 and a water tank cover 157.
  • Both the water tank body 156 and the water tank cover 157 are made of transparent parts.
  • the water tank body 156 and the water tank cover 157 are both transparent plastic products.
  • the liner can also be set as a transparent liner, such as a glass liner.
  • the pot body is fully transparent from the outside to the inside. The user can see through the water tank and the liner without opening the lid. The cooking state of internal food enhances the user experience.
  • an air outlet connector 220 is provided on the side of the pot body 100, and the air outlet connector 220 passes through the pipeline
  • the steam generator 400 connected to the bottom of the pot body 100 constitutes the aforementioned steam output pipeline 410.
  • the center of the pot cover 200 is provided with an air inlet connector 170, and one side of the pot lid 200 is provided with a butt joint 158.
  • the air inlet connector 170 and the butt joint 158 are connected by a first connecting pipe 160 to form the aforementioned steam input pipeline 250.
  • the pot cover 200 of this embodiment includes an outer cover 221, an inner cover 222, and a hollow interlayer 190 located between the two.
  • the steam input pipeline 250 is connected to the cooking cavity through the hollow interlayer 190, and the steam input pipeline
  • a first heat insulation layer 223 is provided between the portion passing through the hollow interlayer 190 (for example, the first connecting pipe 160 described in the above solution) and the outer cover 221. Since the outer cover 221 is in direct contact with the outside air, the temperature of the outer cover 221 is lower than that of the inner cover 222.
  • the first heat insulation layer 223 can prevent the part of the steam input pipeline passing through the hollow interlayer 190 from forming contact heat conduction with the outer cover 221, thereby improving It effectively locks the heat of steam, reduces heat loss during the steam transmission process, and at the same time better suppresses the temperature rise of the outer cover 221, and enhances the anti-scalding effect of the pot cover 200.
  • the first thermal insulation layer 223 is an air layer, which reduces the implementation cost of the first thermal insulation layer 223, and allows the steam input pipeline to pass between the part of the hollow interlayer 190 and the outer cover 221 Leave a certain space between them to avoid deformation of this part of the steam input pipeline from being squeezed.
  • the present application is not limited to this.
  • the first thermal insulation layer may also be a thermal insulation made of thermal insulation material, or a combination of thermal insulation and an air layer.
  • a second insulation layer is provided between the part of the steam input pipeline 250 passing through the hollow interlayer 190 and the inner cover 222, and the second insulation layer prevents the part of the steam input pipeline passing through the hollow interlayer 190 from contacting the inner cover 222.
  • Type heat conduction which more effectively locks the steam heat, and further reduces the heat loss in the steam transmission process.
  • the second heat insulation layer is an air layer, which reduces the implementation cost of the second heat insulation layer, and leaves a certain space between the part of the steam input pipeline passing through the hollow interlayer 190 and the inner cover 222 to avoid this part of steam input
  • the pipeline is squeezed and deformed, which also facilitates the installation of other structural parts in the pot cover 200.
  • the second heat insulation layer may also be a heat insulation member made of a heat insulation material, or a combination of a heat insulation member and an air layer.
  • the outer cover 221 and the inner cover 222 are both transparent pieces, such as glass pieces, and a visible area 224 exposing the outer cover 221 is provided on the outside of the pot cover 200.
  • the user can observe the cooking state of the food in the cooking cavity through the outer cover 221 and the inner cover 222 without opening the lid, and the two glass covers inside and outside greatly increase the visible area of the pot lid 200, reaching the entire circumference of the pot lid 200 Visual effect.
  • the pot cover 200 of this embodiment further includes an outer bracket 260 and an inner bracket 270.
  • the outer stent 260 includes a ring-shaped outer stent body 261 and an outer shielding portion, and the outer stent body 261 and the outer shielding portion define a viewing area 224.
  • the inner stent 270 includes a ring-shaped inner stent body 271.
  • the outer stent body 261 and the inner stent body 271 clamp the edge of the outer cover 221 inside and outside to fix it, and the inner cover 222 is detachably installed inside the inner stent 270 ,
  • the outer cover 221 and the inner cover 222 are fixed in a layered manner by the outer bracket 260 and the inner bracket 270, the assembly structure is simple, and the number of parts and the assembly cost are saved.
  • the outer shielding portion shields the steam input pipeline (such as the first connecting pipe 160 described in the above embodiment) on the outside of the outer cover 221 to prevent the steam input pipeline from being exposed and damage the visual effect, and also has an anti-scalding effect.
  • the outer shielding portion includes a handle 240 and a connecting arm 262.
  • the air inlet connector 170 is installed at the center of the pot cover 200, and the handle 240 covers the air inlet connector 170 and is fixedly connected to the air inlet connector 170.
  • the air inlet connector 170 includes an upper connector 430 and a lower connector 440 connected to each other.
  • the upper connector 430 penetrates the outer cover 221 and the inner cover 222.
  • the lower connector 440 axially locates the inner cover 222, and the upper connector 430 and the lower connector 440 are connected by threaded fit.
  • the inner cover 222 can be removed by removing the lower joint 440.
  • the connecting arm 262 extends from the outer bracket body 261 to the center of the pot cover 200 and is connected to the handle 240, and the connecting arm 262 covers the first connecting tube 160.
  • the above-mentioned outer bracket body 261, connecting arm 262 and handle 240 are integrally formed, which saves the number of parts and assembly cost.
  • a first heat insulation gap 225 is provided between the outer shielding portion and the outer cover 221.
  • the first heat insulation gap 225 reduces the contact area between the outer cover 221 and the outer shielding portion, that is, it reduces the heat transferred from the outer cover 221 to the outer shielding portion, and further reduces the temperature rise of the outer shielding portion.
  • the inner layer stent 270 further includes an inner layer shielding portion 272, and the inner layer shielding portion 272 extends from the inner layer stent body 271 in the central direction thereof and corresponds to the inner and outer layers of the outer layer shielding portion.
  • the inner shielding portion 272 shields the steam input pipeline and the inner structure of the outer shielding portion inside the pot cover 200 to ensure the beauty of the visible area of the pot cover.
  • a second insulating gap 226 is provided between the inner shielding portion 272 and the inner cover 222.
  • the second insulating gap 226 weakens the heat transfer between the inner shielding portion 272 and the inner cover 222, which is the inner cover Enough space is reserved for the installation of 222 on the inner bracket 270 to prevent the inner cover 222 from directly adhering to the inner shielding portion 272 after installation, resulting in the sealing ring around the inner cover 222 not being able to fully compress the inner bracket 270, resulting in reduced sealing The problem.
  • a third insulation gap 227 is provided between the part of the steam input pipeline that passes through the hollow interlayer 190 and the inner shielding portion 272.
  • the third insulation gap 227 weakens the portion of the steam input pipeline that passes through the hollow interlayer 190 and The heat transfer between the inner shielding parts 272.
  • the second insulation layer between the portion of the steam input pipeline passing through the hollow interlayer 190 and the inner cover 222 includes a third insulation gap 227, an inner shielding portion 272, and a second insulation from the outside to the inside.
  • the thermal gap 226 forms a multiple thermal insulation structure, enhances the thermal insulation effect of the second thermal insulation layer, and further reduces heat loss during the steam transmission process.
  • the inner cover 222 can also be detachably provided with a steam guide pipe.
  • One end of the steam guide pipe is connected to the steam input pipeline, and the other end extends into the cooking cavity to send steam into the food so that the steam can be Fully contact with the food material, the heat effect of the food material is better.
  • the long steam flow path and the unstable air outlet speed of the steam generator 400 will make the steam in the steam pipeline appear pulsating.
  • the instantaneous high steam pressure may lift the lid 200 and damage the steam output pipeline 410 and
  • the connection state of the steam input pipe 250 has air leakage, and the steam delivered to the cooking cavity will also have irregular pulse jets, which affects the cooking quality.
  • the present embodiment is provided with a first bending section on the steam input pipeline 250, and the first bending section changes the steam flow direction to buffer the impact of the steam flow. More specifically, when the pulsed steam passes through the first bending section, the steam flow rate is reduced due to the change of the steam flow direction, which effectively alleviates the pulsation of the steam flow, so that the steam input pipe 250 delivers steam to the cooking cavity stably and continuously; The reduction of the steam flow rate also reduces the pressure fluctuations in the steam input pipeline 250, and avoids the problem of steam leakage caused by the instantaneous high pressure that causes the lid 200 to be lifted up.
  • the steam input pipeline 250 of this embodiment includes an air delivery channel 251, an air inlet channel 252 communicating with the cooking cavity, and a docking channel 253 for connecting the steam output pipeline 410.
  • the connecting part and the connecting part of the gas transmission channel 251 and the docking channel 253 respectively form a first bending section.
  • Twice buffering can not only enhance the stability and continuity of the steam flow, but will not reduce the steam flow rate and pressure too much, and will facilitate the rapid and even diffusion of the steam in the cooking cavity.
  • the center of the pot cover 200 is provided with an air inlet connector 170, and one side of the pot lid 200 is provided with a butt joint 158.
  • the air inlet connector 170 and the butt joint 158 are connected by a first connecting pipe 160 to define a steam input pipeline 250.
  • the side wall of the butt joint 158 has a first interface 254 extending outward, and the bottom of the butt joint 158 is provided with a second interface 255.
  • the second interface 255 is in communication with the steam output pipeline 410.
  • the air inlet connector 170 includes an upper connector 430 and a lower connector 440 that are connected to each other.
  • the side wall of the upper connector 430 is provided with an upper connector 431, and the bottom of the lower connector 440 is provided with a lower connector 441.
  • the docking joint 158 defines a docking passage 253, the upper joint 430 and the lower joint 440 are connected to define an air inlet passage 252, and both ends of the first connecting pipe 160 are respectively inserted into the first interface 254 and the upper interface 431 to define the air delivery passage 251.
  • bending one end or both ends of the first connecting pipe can also form the first bending section.
  • the air intake passage 252 is orthogonally communicated with the air conveying passage 251, and the docking passage 253 is orthogonally communicated with the air conveying passage 251.
  • the central axis of the first interface 254 is perpendicular to the central axis of the butt joint 158
  • the central axis of the upper interface 431 is perpendicular to the central axis of the upper joint 430
  • the central axis of the butt joint 158 and the central axis of the air inlet joint are vertical.
  • the central axis of the first connecting pipe 160 is in a horizontal state, and the two first bending sections between the intake passage 252 and the gas transmission passage 251 and between the docking passage 253 and the gas transmission passage 251 can all achieve a 90° bend.
  • the fold can not only effectively buffer the steam flow, but also reduce the height requirement for the installation space inside the pot cover 200, and facilitate the installation of the steam input pipeline 250.
  • the cross-sectional area of the air inlet passage 252 is larger than the cross-sectional area of the gas delivery passage 251 (for example, the inner diameter D1 of the upper joint 430> the inner diameter D2 of the upper interface 431), and the cross-sectional area of the docking passage 253 is larger than that of the steam output pipe
  • the cross-sectional area of 410 (for example, the inner diameter D3 of the butt joint 158>the diameter D4 of the steam output pipe 410).
  • the steam flow rate and pressure in the steam input pipe 250 will change with the cross-sectional area of the steam input pipe 250.
  • the cross-sectional area of the air inlet passage 252 is larger than the cross-sectional area of the air delivery channel 251, when the cross-sectional area of the air delivery channel 251 When the steam enters the air intake passage 252, the sudden increase in the cross-sectional area will reduce the steam flow rate and pressure, which enhances the buffering effect of the first bending section on the pulsed air flow. The same is true when steam enters the docking channel 253 from the steam input line 250.
  • the steam output pipe 410 is provided with a second bending section.
  • the second bending section buffers the impact of the steam flow by changing the steam flow direction, so that the pulsed flow can be obtained before entering the pot cover 200 Effective buffering, further smoothing pressure fluctuations and stabilizing steam flow rate.
  • the steam output pipeline 410 includes a transverse passage 450 communicating with the steam generator 400 and a vertical passage 460 communicating with the transverse passage 450, and the connecting portion between the transverse passage 450 and the vertical passage 460 forms a second bending section.
  • the air outlet 420 of the steam generator 400 is arranged horizontally, and the steam flow direction is changed through the steam output pipe 410, and the steam is delivered to the steam input pipe 250 while buffering the steam flow.
  • an air outlet connector 470 is provided on the pot body 100, and the air outlet connector 470 is connected to the air outlet 420 of the steam generator 400 through a second connecting pipe 161 to define a steam output pipeline 410.
  • the second connecting pipe 161 includes a horizontal bending section 521 and a vertical bending section 522.
  • the horizontal bending section 521 is inserted into the air outlet 420 of the steam generator 400 to define a horizontal passage 450, and the vertical bending section 522 is inserted into
  • the air outlet connector 470 defines a vertical passage 460.

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  • Food Science & Technology (AREA)
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Abstract

一种烹饪可视的蒸汽饭煲，包括煲体（100）、煲盖（200）和内胆（300），煲盖（200）盖合于煲体（100）上并与内胆（300）限定出烹饪腔，煲体（100）上设有蒸汽发生器（400），蒸汽发生器（400）产生的蒸汽通入内胆（300）中用于加热食物，内胆（300）为透明内胆，煲体（100）上设有第一透明视窗（1101），第一透明视窗（1101）环绕内胆（300）且处于内胆（300）的高度范围内；煲盖（200）上设有第二透明视窗（210），由第一透明视窗（1101）和第二透明视窗（210）进入烹饪腔的光线相互补充，以通过第一透明视窗（1101）或者第二透明视窗（210）观察烹饪腔中的烹饪状态。烹饪时，第一透明视窗（1101）和第二透明视窗（210）进入烹饪腔的光线相互补充，可以提升可视效果。

Description

烹饪可视的蒸汽饭煲
本申请要求以下中国专利申请的优先权：
2020年03月04日提交中国专利局、申请号为202020256370.2、发明名称为“蒸汽饭煲”；
2020年05月13日提交中国专利局、申请号为202020783980.8、发明名称为“供气稳定的蒸汽饭煲”；
2020年05月13日提交中国专利局、申请号为202020784077.3、发明名称为“烹饪可视的饭煲”；
2020年05月13日提交中国专利局、申请号为202020785234.2、发明名称为“烹饪可视的饭煲”；
2020年05月13日提交中国专利局、申请号为202020794228.3、发明名称为“烹饪可视的饭煲”；
2020年05月13日提交中国专利局、申请号为202010400311.2、发明名称为“烹饪可视的蒸汽饭煲”；
2020年05月13日提交中国专利局、申请号为202010400297.6、发明名称为“蒸汽饭煲”；
其全部内容通过引用结合在本申请中。
技术领域
本申请涉及厨房烹饪器具领域，尤其涉及烹饪可视的蒸汽饭煲。
背景技术
蒸汽饭煲采用纯蒸汽加热或者是将蒸汽加热与传统的电磁感应、发热盘等相结合的加热方式实现烹饪，现有技术公开的大多数蒸汽饭煲与传统的电饭煲、电压力锅等烹饪器具都存在烹饪不可视的问题，用户感受不到食物的烹饪过程，没有参与感，无法进一步提升用户的烹饪体验。
发明内容
本申请所要解决的技术问题在于克服现有技术的不足而提出烹饪可视的 蒸汽饭煲。
为解决上述技术问题，本申请采用如下技术方案：
烹饪可视的蒸汽饭煲，包括煲体、煲盖和内胆，所述煲盖盖合于所述煲体上并与所述内胆限定出烹饪腔，所述煲体上设有蒸汽发生器，所述蒸汽发生器产生的蒸汽通入所述内胆中用于加热食物，所述内胆为透明内胆，所述煲体上设有第一透明视窗，所述第一透明视窗环绕所述内胆且处于所述内胆的高度范围内；煲盖上设有第二透明视窗，由所述第一透明视窗和所述第二透明视窗进入所述烹饪腔的光线相互补充，以通过所述第一透明视窗或者所述第二透明视窗观察所述烹饪腔中的烹饪状态。
本申请的有益效果：
本申请提出的蒸汽饭煲，烹饪时，用户通过外罩上的第一透明视窗可以从煲体侧部观察到内胆内食物的烹饪状态，尤其是煲盖视角下无法观察到的底部食物，提升烹饪体验；第一透明视窗的水平投影全部位于内胆侧面，由第一透明视窗限定出的可视区域集中在内胆侧面，避免煲体其它结构件显露在透明视窗中而影响视觉效果，第一透明视窗和第二透明视窗进入烹饪腔的光线相互补充，可以提升可视效果。具体地，如果只在煲盖设置第二透明视窗，当用户仅通过第二透明视窗观察时，可能因为光线不足、视窗反光等情况而无法看清烹饪腔内食物的烹饪状态，但当煲体设置第一透明视窗时，有第一透明视窗进入烹饪腔的光线作为补充，使烹饪腔内具备更好的可视条件，提升可视效果，只在煲体设置第一透明视窗的情况亦是如此。
本申请的这些特点和优点将会在下面的具体实施方式、附图中详细的揭露。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请中记载的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。
图1为本申请实施例一中蒸汽饭煲的立体结构示意图；
图2为本申请实施例一中蒸汽饭煲的煲体分解示意图；
图3为本申请实施例一中蒸汽饭煲的煲体结构示意图；
图4为本申请实施例一中蒸汽饭煲的外罩的俯视图；
图5为本申请实施例一中蒸汽饭煲的剖面示意图；
图6为图5的A处局部放大图；
图7为本申请实施例二中蒸汽饭煲的分解示意图；
图8为本申请实施例二中蒸汽饭煲的剖面示意图；
图9为本申请实施例二中蒸汽饭煲的水箱的分解示意图；
图10为本申请实施例一中蒸汽饭煲前侧正视图；
图11为本申请实施例一中蒸汽饭煲左视图；
图12为本申请实施例一中蒸汽饭煲右视图；
图13为本申请实施例一中蒸汽饭煲的底座结构示意图；
图14为本申请实施例三中蒸汽饭煲的立体结构示意图；
图15为本申请实施例三中蒸汽饭煲的剖面示意图；
图16为图15的B处局部放大图；
图17为图15的C处局部放大图；
图18为图15的D处局部放大图；
图19为本申请实施例三中煲盖的外层支架结构示意图；
图20为本申请实施例三中煲盖的内侧结构示意图(未装内盖)。
附图标记：
100煲体、101固定卡扣、102环形定位台阶、103视窗本体、110外罩、1101第一透明视窗、111限位卡勾、112加强筋、113主视区、114扩展视区、116连接部、117支撑平台、120底座、121底座本体、122立柱、1221第一立柱、1222第二立柱、1201内胆隔热座、1202底座外壳、1203环状壳体、1204直立壳体、123限位卡槽、124定位槽、125凹槽、126操作面板、128水箱支撑座、130安装架、1401容置腔、150水箱、151水箱外侧壁、152水箱内侧壁、153第一让位部、154第二让位部、155环形定位筋、156水箱本体、157水箱盖、158对接接头、160第一连接管、170进气接头、190中空夹层；
200煲盖、201活动卡扣、210第二透明视窗、211第一透光区、212第二透光区、220透明盖体、221外盖、222内盖、223第一隔热层、224 可视区、225第一隔热间隙、226第二隔热间隙、227第三隔热间隙、230装饰盖体、231遮挡部、240提手、250蒸汽输入管路、251输气通道、252进气通道、253对接通道、254第一接口、255第二接口、260外层支架、261外层支架本体、262连接臂、270内层支架、271内层支架本体、272内层遮挡部；
300内胆、310把手；
400蒸汽发生器、410蒸汽输出管路、420出气口、430上接头、431上接口、440下接头、441下接口、450横向通道、460竖向通道、470出气接头；
521横向折弯段、522竖向折弯段。
具体实施方式
下面结合本申请实施例的附图对本申请实施例的技术方案进行解释和说明，但下述实施例仅为本申请的优选实施例，并非全部。基于实施方式中的实施例，本领域技术人员在没有做出创造性劳动的前提下所获得其他实施例，都属于本申请的保护范围。
实施例一：
参照图1、2，本申请的实施例一中提出的烹饪可视的蒸汽饭煲，包括煲体100、煲盖200和容置于煲体100中的内胆300，煲体100上设有蒸汽发生器，蒸汽发生器产生的蒸汽通入内胆300中用于加热食物。具体地，本实施例的蒸汽饭煲为分体式结构，即煲盖200可分离地盖合于煲体100上，增加用户使用便利性，如方便煲盖200的单独清洗。当煲盖200盖合于煲体100上时，煲盖200至煲体100形成连通蒸汽发生器和内胆300的蒸汽管路，蒸汽发生器产生的蒸汽通过蒸汽管路输送至内胆300中加热食物。
为使用户能够观察内胆300中食物的烹饪状态，本实施例的煲体100包括底座120、安装架130和安装于二者之间的外罩110，底座120、安装架130和外罩110围成容置腔1401，外罩110上设有能透视至容置腔1401内的第一透明视窗1101，内胆300为透明内胆并放置于容置腔1401内。烹饪时，用户通过外罩110上的第一透明视窗1101可以从煲体100侧部观察到内胆300内食物的烹饪状态，尤其是煲盖200视角下无法观察到的底部食物，提升烹饪体 验。
在上述的蒸汽饭煲中，底座120为煲体100的主要承重部件，起到支撑外罩110和内胆300的作用，以保证整机结构强度。安装架130避免煲盖200合盖状态下直接承压于外罩110上，更好地保护外罩110。由于底座120、安装架130和外罩110均为独立部件，在产品设计上就有了更多的选择，例如外罩110和安装架130可根据实际需要分别调整各自的厚度，二者互不影响，底座120、安装架130和外罩110亦可根据实际需要选择不同的材料制作，更好地满足产品造型需求。
本实施例中，底座120包括底座本体121和由底座本体121向上延伸出的立柱122，底座本体121和立柱122为一体成型结构，以提升底座120结构强度。外罩110支撑于底座本体121上并与立柱122连接形成周向封闭结构。该周向封闭结构保证煲体100周向外观面的完整性，并减少内胆300热量的散失。设有第一透明视窗1101的外罩110强度相对较弱，外罩110和立柱122连接则可以保证周向封闭结构仍有足够的强度来支承煲盖200，避免外罩110承受煲盖200全部重量而增加形变风险。示例性地，底座本体121上设有匹配外罩110的定位槽124，外罩110底部插装于定位槽124内。例如，外罩110整体呈圆弧形，则定位槽124也设置为与外罩110相匹配的圆弧形，定位槽124的两端延伸至立柱122，外罩110底部插装于定位槽124内，外罩110的周向两端与立柱122配合，将容置腔1401周向封闭，即上述的周向封闭结构。上述示例中，底座本体121和外罩110的插接配合方便二者间的拆装，并且能避免外罩110底部曲翘问题。
进一步地，外罩110的周向两端设有限位卡勾111，立柱122上设有与限位卡勾111对应的限位卡槽123，限位卡勾111由上而下插接在限位卡槽123内。示例性地，限位卡勾111和限位卡槽123为彼此配合的L形，限位卡勾111设置在外罩110周向两端的上部，限位卡槽123设置在立柱122周向两端的上部。在外罩110和底座120装配时，先通过限位卡勾111和限位卡槽123的配合确定外罩110的安装位置，再将外罩110底部插入定位槽124内。装配完成后，限位卡勾111插接在限位卡槽123内限制外罩110和立柱122在周向方向上的相对移动，避免外罩110端部曲翘形变以及由曲翘形变造成装配间隙变大的问题。当然，这种组装结构方便外罩110和底座120的拆装，在其他实 施例中，亦可采用螺钉、卡扣等连接方式将外罩110固定于底座120上。
结合图3，本实施例中，安装架130覆盖在外罩110上端和立柱122上端，外罩110和立柱122共同支撑安装架130。组装时，可以将安装架130和外罩110连接成一个整体安装到底座120上，也可以先将外罩110和底座120组装，最后安装安装架130，但无论哪种安装方式都要保证外罩110和立柱122能够同时支撑安装架130，使安装架130整周得到有效支撑，进而使得煲盖200合盖状态下对安装架130施加的压力分别传递至外罩110和立柱122上，防止安装架130受力不均而增加形变风险，也避免了外罩110承受煲盖200全部重量而增加形变风险。
在本实施例的一个实施方式中，第一透明视窗1101沿外罩110整周设置。例如，如图4所示，外罩110是圆心角为α的圆弧形结构，则第一透明视窗在外罩110同样是圆心角为α的圆弧形结构，充分利用外罩110空间，扩大第一透明视窗的可视面积，达到外罩110整周可视的效果。优选地，外罩110为透明件，例如透明玻璃件，外罩110整体构成第一透明视窗1101，使外罩110上的第一透明视窗1101最大化，提升用户的烹饪可视化体验和产品美观度。
需要说明的是，本申请中所述的外罩110设置第一透明视窗1101，可以是外罩110部分构成第一透明视窗1101，例如外罩110由透明罩体和非透明罩体组装或者注塑成一体结构，透明罩体形成第一透明视窗1101；也可以是外罩110全部构成第一透明视窗1101，例如外罩110全部由透明材料制成。
在本实施例中，当外罩110全部构成第一透明视窗时，安装架130也可以为透明件。这样，在煲体100外观上，安装架130和外罩110具有一体化的视觉效果，不仅增加了煲体100的可视面积，还使得煲体100造型更加美观。
进一步地，参考图1、2，本实施例的第一透明视窗1101包括视窗本体103和在视窗本体103内周面上周向间隔设置的至少两个加强筋112，以提升视窗本体103支撑强度，使得视窗本体103在做大做薄的同时亦可减少变形破裂风险。通过上述至少两个加强筋112将视窗本体103分隔为主视区113和位于主视区113两侧的扩展视区114，主视区113的可视面积大于扩展视区114的可视面积，所述底座120侧面对应所述主视区113的位置设置操作面板126。主视区113拥有最大的可视面积并且没有加强筋112的视觉干扰，当底座120侧面的操作面板126对应主视区113设置时，用户需要在正对主视区113的位置 进行烹饪操作，操作的同时亦可通过主视区113观察内胆300内食物的烹饪状态，既获得了良好的操作和可视体验，又能降低误操作几率；主视区113两侧的扩展视区114增加视窗本体103的整体可视面积，实现煲体100周向方向的多角度可视。
烹饪时，用户通过外罩上的第一透明视窗可以从煲体侧部观察到内胆内食物的烹饪状态，尤其是煲盖视角下无法观察到的底部食物，提升烹饪体验。
通过扩大第一透明视窗面积，减小第一透明视窗厚度，可以获得更大的可视面积和更加清晰的可视化体验，但第一透明视窗的强度也会因此而减弱，普通的撞击和承压都可能造成第一透明视窗变形甚至破裂。本实施例中，在第一透明视窗1101的视窗本体103上设置至少两个加强筋112，以提升视窗本体支撑强度，使得视窗本体在做大做薄的同时亦可减少变形破裂风险。
由于加强筋112的设置会阻碍视线，影响视觉效果，本实施例中，视窗本体103由至少两个加强筋112分隔为主视区和位于主视区两侧的扩展视区，主视区拥有最大的可视面积并且没有加强筋112的视觉干扰，当底座侧面的操作面板对应主视区设置时，用户需要在正对主视区的位置进行烹饪操作，操作的同时亦可通过主视区观察内胆内食物的烹饪状态，既获得了良好的操作和可视体验，又能降低误操作几率；主视区两侧的扩展视区增加视窗本体的整体可视面积，实现煲体周向方向的多角度可视。
进一步地，本实施例的加强筋112具有伸出视窗本体103底端的连接部116，连接部116固定连接在底座120上。设置连接部116方便第一透明视窗1101在底座120的安装固定，连接部116设置在加强筋112上，避免在拆装第一透明视窗1101时对视窗本体造成损伤。示例性地，底座本体121的定位槽124内设置定位孔，当第一透明视窗1101底部插入定位槽时，连接部116插入定位孔中，螺钉由定位孔向上贯穿并锁紧于连接部116内，将第一透明视窗1101固定在底座120上。
参照图1-2、图6，第一透明视窗1101还包括由视窗本体103顶端向容置腔1401中心方向延伸的支撑平台117，安装架130承重于支撑平台117上。支撑平台117增加第一透明视窗1101对安装架130的承重面积，减轻视窗本体103受力。优选的，支撑平台117的厚度在其延伸方向上递减，例如，参照图6，支撑平台117的上表面保持水平，支撑平台117的下表面从根部位置(即， 支撑平台117从视窗本体103上端向容置腔1401中心方向延伸的起点位置)向自由端方向由低到高倾斜设置，形成三角支撑结构，增加支撑平台117的支撑强度，特别是支撑平台117根部位置的强度，以避免根部位置应力集中而导致支撑平台117形变。
结合图2，本实施例中，内胆300侧壁上端设有一对把手310，安装架130上设有放置把手310的把手槽131，当内胆300放入容置腔1401后，安装架130支撑把手310使内胆300保持悬挂状态，因此，视窗本体103对应把手槽131的位置相比其他部位承受了更大压力。为此，在视窗本体103上对应把手槽131的位置设置加强筋c和加强筋d，视窗本体103上位于加强筋c和加强筋d之间的区域对应的圆心角为180°，加强筋c和加强筋d位于相应把手槽131的正下方，避免视窗本体103局部受力过大而产生形变。底座120包括内胆隔热座1201和围绕内胆隔热座1201设置的底座外壳1202。内胆300与外罩110和底座120均不接触，内胆300底部与内胆隔热座1201之间设有间隙，该间隙起到隔热作用，降低对内胆隔热座1201材料的耐温性要求。在其他实施例中，内胆底部也可支撑于内胆隔热座上，内胆隔热座和底座外壳一体成型，具有良好的承重能力，当内胆隔热座支撑内胆底部时，内胆放置更加平稳。
参照图1、2，煲盖200盖合于煲体100上并与内胆300限定出烹饪腔，煲体100上设有为烹饪腔供应蒸汽的蒸汽发生器，内胆300为透明内胆，煲体100上设有第一透明视窗1101。一个实施方式中，煲盖200上设有第二透明视窗210，由第一透明视窗1101和第二透明视窗210进入烹饪腔的光线相互补充，以更好地通过第一透明视窗1101或者第二透明视窗210观察烹饪腔中的烹饪状态。
本申请由于完全采用蒸汽加热，不同于现有技术中非蒸汽加热的形式，本申请从一开始烹饪腔中就有大量的热蒸汽，弥漫的蒸汽使得第一透明视窗上附着有大量的水滴，影响视觉效果，为此，在煲盖上设有第二透明视窗，虽然一开始第二透明视窗也会因为弥漫的蒸汽而影响视觉效果，但毕竟液化在第一透明视窗和第二透明视窗上的小水滴是可以透过光的，所以相比于仅设置第一透明视窗而言，透光量上是增加，因此可以通过不同方位的可视窗补充光线，以降低蒸汽对视觉效果的影响。光线相互补充还可以克服不同放置环境下，可视效果不好的问题。当煲体正常放置时，煲体的前侧(即正面)、顶侧(即顶面) 朝向用户，后侧(即背面)一般背向用户，左右侧(即侧面)位于用户的左右两侧，当煲体的某一侧处于光线不足的环境下，如后侧朝向灶台或墙面，顶侧朝向橱柜，或左、右侧朝向墙面等，此时可通过第一和第二透明视窗进行光线补充，提高可视效果，如此，可保证无论从哪个角度看内胆，另外一个视窗都可以补充光线，避免看不清楚内胆内烹饪状态的情况。
如图1所示，第二透明视窗210设有第一透光区211和第二透光区212，第一透光区靠近所述煲体的前侧设置，也即设置在煲盖上靠近所述主视区的一部分，第二透光区靠近所述煲体的左侧或右侧或左右两侧设置，也即设置在煲盖上靠近所述扩展视区的一部分。通过设置第一透光区，可以尽可能地获取从煲盖的前侧上方照射过来的光，以对烹饪腔中进行照亮；同时，通过设置第二透光区，可以尽可能地获取从煲盖的左侧、右侧上方照射而来的光；而蒸汽饭煲的煲体的后侧通常朝向墙面放置，因此煲盖靠近后侧的部分光线较暗，煲盖靠近后侧的部分补光效果可忽略不计，可依据实际情况来决定该部分是否设置透光区。如此，再加上第一透明视窗获取的前侧方向的光来实现光线的相互补充，从而使得用户从任一侧对烹饪腔进行观察，可视效果都较好。
第一透明视窗包括主视区113和位于所述主视区两侧的扩展视区114，所述主视区的可视面积大于所述扩展视区的可视面积。第一透明视窗位于煲体的前侧，而在煲体正常放置时，其前侧多为开放空间，不容易遮挡，所以对于光线补充效果更大。为进一步提高光线补充效果，设置扩展视区，以提高不同视角下的视角效果。
在本实施例中，煲体100包括底座120和外罩110，底座120和外罩110围成用于收容内胆300的容置腔1401，外罩110部分或者全部构成第一透明视窗1101，这样设计，外罩110既构成了煲体100周向的部分外观面，也构成了部分或者全部的第一透明视窗1101，简化煲体100结构，降低成本。本实施例中，煲体100上还设有为蒸汽发生器供水的水箱150，底座本体121支撑水箱150，水箱150侧部挂接到立柱122上进行固定。
需要说明的是，当外罩110部分构成第一透明视窗1101时，外罩110可以由透明罩体和非透明罩体组装或者注塑成一体结构，例如在非透明罩体上设置安装孔，将透明罩体装配于安装孔中形成第一透明视窗1101；当外罩110全部构成第一透明视窗1101时，外罩110全部由透明材料制成。
在本实施例中，当煲盖200上设置第二透明视窗210时，可以将煲盖200的平面部分全部做成第二透明视窗210，达到顶部全周可视的效果，也可以是煲盖200设置安装孔，将透明材料装配于安装孔中形成第二透明视窗210。第二透明视窗210既可以是单层结构，也可以是两层或者两层以上的多层复合结构。
根据本实施例的蒸汽饭煲，煲体100上设置的第一透明视窗1101，使用户可以从煲体100侧部观察到烹饪腔内食物的烹饪状态，尤其是顶部视角无法观察的底部食物，煲盖200上设置的第二透明视窗210，使用户可以从煲体100顶部观察到烹饪腔内食物表面的烹饪状态，由此实现蒸汽饭煲顶部、侧部多角度烹饪可视的效果。在此基础上，第一透明视窗1101和第二透明视窗210进入烹饪腔的光线相互补充，可以提升可视效果。具体地，如果只在煲盖200设置第二透明视窗210，当用户通过第二透明视窗210观察时，可能因为光线不足、视窗反光等情况而无法看清烹饪腔内食物的烹饪状态，但当煲体100设置第一透明视窗1101时，有第一透明视窗1101进入烹饪腔的光线作为补充，使烹饪腔内具备更好的可视条件，提升可视效果。当用户通过第一透明视窗1101观察亦是如此。
为了增强可视效果，本实施例中，第一透明视窗1101在煲体100周向方向上的可视角度α≥180°，即，第一透明视窗1101在周向方向上覆盖煲体100的角度大于等于180°。如图4所示，本实施例的外罩110呈圆弧形，当外罩110部分或者全部构成第一透明视窗1101时，第一透明视窗1101亦为圆弧形，可视角度α即为第一透明视窗1101对应于外罩110所在圆周圆心的圆心角。当第一透明视窗1101在煲体100周向方向上的可视角度α≥180°时，煲体100侧部在周向方向上获得更广泛的视觉角度，由于内胆300大都为圆筒形，当用户在第一透明视窗1101正中位置观察时，烹饪腔的可视区域也达到了180°，周向方向上没有视觉盲区。更优选地，可视角度α为200°～260°，当可视角度α超过260°时，外罩110强度偏低，受冲击或者受热容易变形，为了兼顾到可视化和机械强度，故限定可视角度α为200°～260°，可选地，α为200°、210°、220°、230°、240°、250°、260°。
示例性地，参照图4，视窗本体103为圆心角α大于180°的圆弧形结构，煲体100侧部在周向方向上获得更广泛的可视角度，这样可以进一步扩大主视 区113的可视面积，并且能将扩展视区114延伸至煲体100的相对两侧，用户在煲体100相对两侧亦可观察到内胆300内食物的烹饪状态。视窗本体103的内周面上周向间隔设置加强筋112，加强筋112至少包括加强筋a和加强筋b，视窗本体103上位于加强筋a和加强筋b之间的区域为主视区113，视窗本体103上位于加强筋a和视窗本体103左端之间的区域为左侧的扩展视区114，视窗本体103上位于加强筋b和视窗本体103右端之间的区域为右侧的扩展视区114。加强筋a和加强筋b均由视窗本体103顶端竖向延伸至视窗本体103底端，当视窗本体103承重时，作用力方向与视窗本体103的高度方向一致，而加强筋112由视窗本体103顶端竖向延伸至视窗本体103底端，使得视窗本体103在高度方向都能得到加强筋112的有效支撑。
本实施例中，主视区113的圆心角β为90°～180°。主视区113的圆心角β小于90°时，主视区113的可视面积过小，容易受到上述加强筋a和加强筋b的视觉干扰，主视区113的圆心角β大于180°时，加强筋a和加强筋b相距太远，减弱主视区113的支撑强度，故限定主视区113的圆心角β为90°～180°，可选的圆心角β为90°、100°、110°、120°、150°、160°、180°。
当然，本申请不限于上述实施例所述，在其他实施例中，根据第一透明视窗的可视面积大小和支撑强度需要可以设置更多的加强筋。
参照图10-12，本实施例中，第一透明视窗1101在煲体100前侧中心处向煲体100两侧对称延伸，当用户在正对煲体100前侧位置观察时，第一透明视窗1101在煲体100两侧区域的可视面积相同，达到很好地对称性视觉，同时煲体100也获得了左右对称的外观造型。
参照图2、10，本实施例的一个实施方式中，第一透明视窗环绕所述内胆设置且第一透明视窗1101处于内胆300的高度范围内，第一透明视窗1101的水平投影全部位于内胆300侧面，由第一透明视窗1101限定出的可视区域集中在内胆300侧面，避免煲体100内部其他器件显露在第一透明视窗1101中而影响视觉效果。示例性地，底座本体121上设有与内胆300底部匹配的凹槽125，内胆300底部沉入凹槽125中，使内胆300在底座120上放置更加平稳。其中，第一透明视窗环绕所述内胆设置，可以第一透明视窗周向环绕整个内胆，也可以是第一透明视窗周向环绕内胆的一部分。具体地，第一透明视窗1101 处于内胆300的高度范围内是指，内胆300底壁低于第一透明视窗1101的下缘，内胆300胆口高于第一透明视窗1101的上缘。这样，用户处于煲体100侧方位置观察时，平视或者俯视第一透明视窗1101都能观察到内胆300中食物烹饪状态。
本实施例中，第一透明视窗1101在煲体100高度方向的可视距离为L，煲体100的高度为H，1/3H≤L≤2/3H。这里的可视距离L对于圆形的第一透明视窗而言即为第一透明视窗的直径，对于矩形的第一透明视窗而言即为第一透明视窗的高度，当可视距离L不足煲体100高度H的1/3时，煲体100侧部形成的可视区域过于狭窄，不利于用户观察，且对第二透明视窗210的补光效果也大幅削弱；当可视距离L超过煲体100高度H的2/3时，不仅煲体100结构强度得不到保证，而且留给煲体100安装其他器件的空间高度不足，需要增加煲体100体积。
参照图2，本实施例的一个实施方式中，煲盖200包括透明盖体220(例如玻璃盖体、透明塑料盖体等)和装饰盖体230，装饰盖体230通常为非透明材料制成并且包围在透明盖体220边缘，用于保护透明盖体220，透明盖体220的外露部分构成第二透明视窗210。这样设计使得煲盖200可视面积大大增加，达到煲盖200整周可视的效果，相应地，用户通过第二透明视窗210可以观察到烹饪腔内更多食物的烹饪状态，提升用户的烹饪可视化体验。
参照图1-2、5，在本实施例的一个实施方式中，煲体100内还设有连通蒸汽发生器400的蒸汽输出管路410，煲盖200上设有蒸汽输入管路250，当煲盖200盖合于煲体100上时，蒸汽输出管路410和蒸汽输入管路250接通，蒸汽发生器400产生的蒸汽通过蒸汽输出管路410、蒸汽输入管路250输送至内胆300中加热食物。进一步地，煲盖200中心还设有与烹饪腔连通的进气通道，煲盖200上的蒸汽输入管路250与所述进气通道连通。
由于蒸汽输入管路250与进气通道都处于透明盖体220的可视范围内，为了避免蒸汽管路和进气通道外露，装饰盖体230设有向煲盖200中心延伸的遮挡部231，遮挡部231覆盖在透明盖体220上，以遮挡蒸汽管路。煲盖200中心安装提手240，用于遮挡进气通道且方便用户取放煲盖。
参考图2和图13，在本实施例的一个实施方式中，底座120包括内胆隔热座1201和围绕内胆隔热座1201设置的底座外壳1202，外罩110安装在底 座外壳1202上围成容置腔1401，内胆300为透明内胆300并放置于容置腔1401内。
本实施方式中，底座120为煲体100的主要承重部件，起到直接或者间接支撑外罩110、内胆300等结构件的作用，保证整机结构强度。内胆隔热座1201和底座外壳1202采用一体成型结构，增加底座120的承重能力，提升整机结构强度。示例性地，底座外壳1202包括围绕内胆隔热座1201设置的环状壳体1203和由环状壳体1203一侧向上延伸的直立壳体1204，外罩110支撑于环状壳体1203上并与直立壳体1204连接形成周向封闭结构。周向封闭结构保证煲体100周向外观面的完整性，并减少内胆300热量的散失；设置透明视窗的外罩110强度相对较弱，外罩110和直立壳体1204连接则可以保证周向封闭结构仍有足够的强度来支承煲盖200，避免外罩110承受煲盖200全部重量而增加形变风险。
蒸汽饭煲烹饪时，由于内胆隔热座1201位于内胆300下方，内胆隔热座1201隔绝内胆300底部向底座120内部空间的热量辐射，有效缓解底座120内部空间的辐射温升，避免底座120内电子器件(如电路板等)长时间在高温环境下工作，增加电子器件的工作安全性和使用寿命。
参照图5，本实施例中，由于外罩110上设置了透明视窗，为了避免煲体100内其它器件显露在透明视窗中影响视觉效果，这些器件可以安装在底座120内部，例如，将蒸汽发生器400设置在环状壳体1203内，将蒸汽输出管路410设置在直立壳体1204内，这样不仅避免蒸汽发生器400和蒸汽输出管路410显露在外罩110的透明视窗中，还能减少蒸汽在经过蒸汽输出管路410时的热量损失。
实施例二：
参照图7、8，本实施例的蒸汽饭煲包括煲体100和内胆300，煲体100具有为内胆供应蒸汽的蒸汽发生器，煲体100包括底座120和安装于底座120上的水箱150，水箱150和底座120围成顶部敞开的容置腔，内胆置于容置腔内，水箱150围绕内胆设置。
相比现有技术，本实施例的蒸汽饭煲相当于将煲体外壳的底座以外部分用水箱150来代替，水箱150的设置充分地利用了煲体100的周向空间，水箱150既作为储水容器，也用于构成煲体100周向的外观面，这样在不增大煲体 体积的情况下使水箱150获得了更大的储水空间，满足蒸汽烹饪的水量需求；同时，可以省去现有技术中煲体外壳的中环和其它结构件，简化煲体结构，降低成本。
由于水箱150围绕内胆300设置，内胆300向外散发的热量能被水箱150利用，即内胆向外散发的热量对水箱150内的水进行预热，提升水箱150内水的初始温度，从而加快蒸汽发生效率，节约能源。由于水箱150内的水吸收了大部分热量，相当于在内胆与水箱外侧壁151之间设置了隔热层，水箱外侧壁151在饭煲长时间烹饪后依然保持较低的温升，有利于延长水箱150寿命并具有更好的防烫效果。
本实施例的水箱150为非封闭圆环结构，例如C形结构，水箱150的一侧(即，C形结构的开口侧)形成开放的第一让位部153，以将水箱内侧壁152围成的内部空间和水箱150外侧空间连通，底座120一侧设有第一立柱1221，第一立柱1221配合在第一让位部153中，使得水箱150和第一立柱1221配合将容置腔围成周向封闭空间(二者配合处的间隙可忽略不计)，即水箱150和第一立柱1221配合构成一个整圆结构。这里的配合可理解为第一立柱1221全部或者部分嵌入第一让位部153中，削弱第一立柱1221对煲体100外观的影响，且在水箱150组装及其使用过程中起到定位水箱150的作用。
为了保证水箱150有足够的储水空间，在水箱150和第一立柱1221配合构成的整圆结构上，水箱150的圆心角大于180°，如250°、270°等。第一让位部153由第一立柱1221填充，这样，煲体100周向的外观面大部分是由水箱外侧壁151构成的。
进一步地，底座120上还设有第二立柱1222，第一立柱1221和第二立柱1222分别位于底座120的相对两侧，煲盖200合盖状态下扣合于第二立柱1222上。具体地，煲盖200周向的一端为铰接端，相对铰接端的另一端设置开盖按钮(图中未示出)和活动卡扣201，第二立柱1222上端设有能与活动卡扣201相扣合的固定卡扣101。当煲盖200盖合煲体100时，活动卡扣201与固定卡扣101相互扣合，从而将煲盖200锁定在合盖状态；推动开盖按钮即可解除活动卡扣201与固定卡扣101的扣合状态，实现开盖。
优选地，水箱150设有与第二立柱1222配合的第二让位部154，第二让位部154由水箱内侧壁152内凹形成。这里的配合可理解为第二立柱1222全 部或者部分嵌入第二让位部154中，削弱第二立柱1222对煲体100外观的影响，且在水箱150组装及其使用过程中起到定位水箱150的作用。
在本实施例的一个实施方式中，煲盖合盖状态下扣合于水箱上，例如，在水箱内侧壁上端设置能与活动卡扣相扣合的固定卡扣，使煲盖能直接扣合在水箱上，底座上不再需要额外设置的扣合结构。
参照图7-9，本实施例中，水箱150和底座120分体设置，水箱150可拆地置于底座120上。在一个实施方式中，水箱150底部沿水箱150周向方向设置环形定位筋155，环形定位筋155可沿水箱150底部外缘设置，底座120外周侧设置与环形定位筋155配合的环形定位台阶102，当水箱150置于底座120上时，水箱150底部支撑于底座120上表面，环形定位筋155支撑于底座120的环形定位台阶102上，确保水箱150不会随意晃动，而且环形定位筋155的外周面与底座120的外周面在竖直方向上平齐，达到一体化的视觉效果。
在本实施例中，煲盖200合盖状态下支撑于水箱150上。具体地，煲盖200合盖状态下能覆盖到水箱150上表面的局部或者全部，利用煲盖200重量压持水箱150，防止水箱150上下窜动；水箱150亦替代现有技术的中环，起到了平稳支撑煲盖200的作用。
在其它实施例中，水箱可通过螺钉、粘接、超声焊接等连接方式完全固定在底座上，不可拆卸；又或者将水箱和底座做成一体结构。
进一步地，如图9所示，水箱150包括水箱本体156和水箱盖157，水箱本体156和水箱盖157均采用透明件，例如水箱本体156和水箱盖157均为透明塑料制品。当水箱本体156为透明件时，用户透过水箱本体156可以实时观察到水箱水位，水位信息获取更加直观、清晰，给予用户全新的体验，同时也便于用户根据当前水箱水位设定相应的烹饪程序，提升烹饪质量。在此基础上，内胆亦可设置为透明内胆，例如玻璃内胆，煲体由外到内达到全透明的效果，用户在不开盖的情况下即可透过水箱和内胆看到内部食物的烹饪状态，提升使用体验。
实施例三：
参照图14、15、17，根据本实施例的蒸汽饭煲，为实现煲体100和煲盖200之间的蒸汽导通，在煲体100一侧设置出气接头220，出气接头220通过管路连接至煲体100底部的蒸汽发生器400，构成上述的蒸汽输出管路410。 煲盖200中心设有进气接头170，煲盖200一侧设有对接接头158，进气接头170和对接接头158之间通过第一连接管160连接，构成上述的蒸汽输入管路250。煲盖200合盖状态下，对接接头158和出气接头220密封对接，实现蒸汽发生器400至烹饪腔的蒸汽导通。
结合图15、17，本实施例的煲盖200包括外盖221、内盖222和位于二者之间的中空夹层190，蒸汽输入管路250经过中空夹层190连通至烹饪腔，蒸汽输入管路经过中空夹层190的部分(例如上述方案所述的第一连接管160)与外盖221之间设有第一隔热层223。由于外盖221直接与外界空气接触，外盖221温度要低于内盖222，第一隔热层223可避免蒸汽输入管路经过中空夹层190的部分与外盖221形成接触式热传导，从而更有效地锁住蒸汽热量，减少蒸汽传输过程的热量损耗，同时也更好地抑制了外盖221温升，提升煲盖200防烫效果。
优选地，本实施例的一个实施方式中，第一隔热层223为空气层，降低第一隔热层223的实施成本，并且使蒸汽输入管路经过中空夹层190的部分与外盖221之间留出一定空间，避免该部分蒸汽输入管路受到挤压而发生形变。当然，本申请并不以此为限，在其他实施方式中，第一隔热层亦可为隔热材料制成的隔热件，或者是隔热件和空气层的结合。
进一步地，蒸汽输入管路250经过中空夹层190的部分与内盖222之间设有第二隔热层，第二隔热层避免蒸汽输入管路经过中空夹层190的部分与内盖222形成接触式热传导，从而更有效地锁住蒸汽热量，进一步减少蒸汽传输过程的热量损耗。
优选地，第二隔热层为空气层，降低第二隔热层的实施成本，并且使蒸汽输入管路经过中空夹层190的部分与内盖222之间留出一定空间，避免该部分蒸汽输入管路受到挤压而发生形变，也方便设置煲盖200内的其他结构件。当然，本申请并不以此为限，在其他实施方式中，第二隔热层亦可为隔热材料制成的隔热件，或者是隔热件和空气层的结合。
进一步地，参照图15、17、19、20，外盖221和内盖222均为透明件，如玻璃件，煲盖200外侧上设有显露外盖221的可视区224。用户能在不开盖的情况下能通过外盖221和内盖222观察烹饪腔内食物的烹饪状态，并且内外两层玻璃盖体使得煲盖200可视面积大大增加，达到煲盖200整周可视的效果。
为了方便组装上述的外盖221和内盖222，本实施例的煲盖200还包括外层支架260和内层支架270。外层支架260包括环状的外层支架本体261和外层遮挡部，外层支架本体261和外层遮挡部限定出可视区224。内层支架270包括环状的内层支架本体271，外层支架本体261和内层支架本体271内外夹持外盖221边缘部位将其固定，内盖222可拆地安装于内层支架270内侧，由外层支架260和内层支架270配合将外盖221和内盖222以层叠方式固定，组装结构简单，节省零件数量和组装成本。外层遮挡部在外盖221外侧遮挡蒸汽输入管路(例如上述实施方式中所述的第一连接管160)，避免蒸汽输入管路外露而破坏视觉效果，且兼具防烫作用。示例性地，外层遮挡部包括提手240和连接臂262，进气接头170安装于煲盖200的中心处，提手240覆盖在进气接头170上方并与进气接头170固定连接。进气接头170包括彼此连接的上接头430和下接头440，上接头430贯穿外盖221和内盖222，下接头440轴向定位内盖222，上接头430和下接头440采用螺纹配合连接，卸下下接头440即可将内盖222拆出。连接臂262由外层支架本体261向煲盖200的中心处延伸并与提手240连接，连接臂262遮挡第一连接管160。上述的外层支架本体261、连接臂262和提手240三者一体成型，节省零件数量和组装成本。
本实施例中，外层遮挡部与外盖221之间设有第一隔热间隙225。第一隔热间隙225减少了外盖221与外层遮挡部的接触面积，也即减少了外盖221传递到外层遮挡部的热量，进一步降低外层遮挡部温升。
进一步地，内层支架270还包括内层遮挡部272，内层遮挡部272由内层支架本体271向其中心方向延伸并与外层遮挡部内外对应。内层遮挡部272在煲盖200内侧遮挡蒸汽输入管路以及外层遮挡部的内侧结构，保证煲盖可视区域的美观。
本实施例中，内层遮挡部272与内盖222之间设有第二隔热间隙226，第二隔热间隙226削弱内层遮挡部272与内盖222之间的热量传递，为内盖222在内层支架270上的安装预留足够的空间，避免内盖222安装后直接贴紧内层遮挡部272导致内盖222周沿的密封圈无法完全压紧内层支架270导致密封性降低的问题。
本实施例中，蒸汽输入管路经过中空夹层190的部分与内层遮挡部272之间设有第三隔热间隙227，第三隔热间隙227削弱蒸汽输入管路经过中空夹 层190的部分与内层遮挡部272之间的热量传递。在本实施例中，蒸汽输入管路经过中空夹层190的部分与内盖222之间的第二隔热层由外到内依次包括第三隔热间隙227、内层遮挡部272和第二隔热间隙226，形成多重隔热结构，增强第二隔热层的隔热效果，进一步减少蒸汽传输过程的热量损耗。
本实施例中，内盖222上还可拆卸地设置有蒸汽引导管，蒸汽引导管一段对接蒸汽输入管路，另一端伸入到烹饪腔内，以将蒸汽送入到食材内部，使得蒸汽能够充分与食材接触，食材的受热效果更好。
较长的蒸汽流动路径加上蒸汽发生器400不稳定的出气速度，会使蒸汽管路中的蒸汽呈现脉冲性，瞬时蒸汽压力过高可能将煲盖200顶起，破坏蒸汽输出管路410和蒸汽输入管路250的连接状态，出现漏气，而且输送至烹饪腔内的蒸汽亦会出现不规则的脉冲喷射现象，影响烹饪质量。
结合图17、18，针对上述问题，本实施例在蒸汽输入管路250上设置第一折弯段，第一折弯段通过改变蒸汽流向来缓冲蒸汽气流冲击。更具体地，在脉冲蒸汽经过第一折弯段时因为蒸汽流向的改变而降低了蒸汽流速，有效缓解了蒸汽气流的脉冲性，使得蒸汽输入管路250向烹饪腔稳定、持续地输送蒸汽；蒸汽流速的降低也减轻了蒸汽输入管路250内的气压波动，避免瞬间气压过高导致煲盖200被顶起而发生蒸汽泄露的问题。
优选的，本实施例的蒸汽输入管路250包括输气通道251、连通烹饪腔的进气通道252和用于对接蒸汽输出管路410的对接通道253，输气通道251与进气通道252的连通部位和输气通道251与对接通道253的连通部位分别形成第一折弯段。蒸汽由蒸汽输入管路250导入烹饪腔的过程中经历两次变向和缓冲，使原本由煲体100向煲盖200流向的蒸汽气流折回至煲体100方向，实现对烹饪腔的蒸汽输送，两次缓冲既能增强蒸汽气流的平稳性和持续性，又不会过多的降低蒸汽流速和压力，利于蒸汽在烹饪腔内快速均匀地扩散。
示例性地，煲盖200中心设有进气接头170，煲盖200一侧设有对接接头158，进气接头170和对接接头158通过第一连接管160连接，以限定出蒸汽输入管路250。其中，对接接头158侧壁上具有向外延伸的第一接口254，对接接头158底部设有第二接口255，煲盖200合盖时，第二接口255与蒸汽输出管路410连通。进气接头170包括彼此连接的上接头430和下接头440，上接头430侧壁设有上接口431，下接头440底部设有下接口441。对接接头158 内限定出对接通道253，上接头430和下接头440连接限定出进气通道252，第一连接管160两端分别插接第一接口254和上接口431限定出输气通道251。
应当理解，本实施例不局限于上述示例性方案，在其它实施方案中，第一连接管一端或者两端弯折同样可以形成第一折弯段。
优选地，进气通道252与输气通道251正交连通，对接通道253与输气通道251正交连通。具体地，第一接口254的中轴线垂直于对接接头158的中轴线，上接口431的中轴线垂直于上接头430的中轴线，对接接头158的中轴线和进气接头的中轴线为竖直状态，第一连接管160的中轴线为水平状态，进气通道252与输气通道251之间以及对接通道253与输气通道251之间的两个第一折弯段均能实现90°弯折，既能有效地缓冲蒸汽气流，又能降低对煲盖200内部安装空间的高度要求，便于蒸汽输入管路250的安装。
继续参照图17、18，优选地，进气通道252的截面积大于输气通道251的截面积(如上接头430内径D1＞上接口431内径D2)，对接通道253的截面积大于蒸汽输出管路410的截面积(如对接接头158内径D3＞蒸汽输出管路410直径D4)。蒸汽输入管路250内的蒸汽流速和压力会随着蒸汽输入管路250截面积的变化而变化，由于进气通道252的截面积大于输气通道251的截面积，当输气通道251内的蒸汽进入进气通道252时，截面积的突然增大会使蒸汽流速和压力减小，即增强了第一折弯段对脉冲气流的缓冲效果。当蒸汽由蒸汽输入管路250进入对接通道253时亦是如此。
进一步地，参照图15-17，蒸汽输出管路410上设有第二折弯段，第二折弯段通过改变蒸汽流向来缓冲蒸汽气流冲击，使脉冲气流在进入煲盖200之前就能得到有效缓冲，进一步平缓气压波动和稳定蒸汽流速。
优选地，蒸汽输出管路410包括连通蒸汽发生器400的横向通道450和连通横向通道450的竖向通道460，横向通道450与竖向通道460的连通部位形成第二折弯段。本实施例中，蒸汽发生器400的出气口420横向设置，通过上述蒸汽输出管路410改变蒸汽流向，在缓冲蒸汽气流的同时将蒸汽向上输送至蒸汽输入管路250。示例性地，煲体100上设有出气接头470，出气接头470与蒸汽发生器400的出气口420通过第二连接管161连接，以限定出蒸汽输出管路410。其中，第二连接管161包括横向折弯段521和竖向折弯段522，横向折弯段521插接蒸汽发生器400的出气口420限定出横向通道450，竖向折 弯段522插接出气接头470限定出竖向通道460。
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。本领域技术人员应能理解，上述实施例均是示例性而非限制性的。在不同实施例中出现的不同技术特征可以进行组合，以取得有益效果。本领域技术人员在研究附图、说明书及权利要求书的基础上，应能理解并实现所揭示的实施例的其他变化的实施例。因此，凡是未脱离本申请技术方案的内容，依据本申请的技术实质对以上实施例所做的任何简单修改、等同变化及修饰，均仍属于本申请技术方案保护的范围。

Claims (10)

  1. 烹饪可视的蒸汽饭煲，包括煲体、煲盖和内胆，所述煲盖盖合于所述煲体上并与所述内胆限定出烹饪腔，所述煲体上设有蒸汽发生器，所述蒸汽发生器产生的蒸汽通入所述内胆中用于加热食物，其特征在于，所述内胆为透明内胆，所述煲体上设有第一透明视窗，所述第一透明视窗环绕所述内胆且处于所述内胆的高度范围内；所述煲盖上设有第二透明视窗，由所述第一透明视窗和所述第二透明视窗进入所述烹饪腔的光线相互补充，以通过所述第一透明视窗或者所述第二透明视窗观察所述烹饪腔中的烹饪状态。
  2. 如权利要求1所述的蒸汽饭煲，其特征在于，所述第一透明视窗包括主视区和位于所述主视区两侧的扩展视区，所述主视区的可视面积大于所述扩展视区的可视面积。
  3. 如权利要求1所述的蒸汽饭煲，其特征在于，所述煲体包括底座和外罩，所述底座和所述外罩围成用于收容所述内胆的容置腔，所述外罩部分或者全部构成所述第一透明视窗。
  4. 如权利要求1所述的蒸汽饭煲，其特征在于，所述第一透明视窗在所述煲体高度方向的可视距离为L，所述煲体的高度为H，1/3H≤L≤2/3H。
  5. 如权利要求2所述的蒸汽饭煲，其特征在于，所述第二透明视窗设有第一透光区和第二透光区，所述第一透光区设置在所述煲盖上靠近所述主视区的一部分，所述第二透光区设置在所述煲盖上靠近所述扩展视区的一部分。
  6. 如权利要求1所述的蒸汽饭煲，其特征在于，所述煲体设有连接所述蒸汽发生器的蒸汽输出管路，所述煲盖上设有连通至所述烹饪腔的蒸汽输入管路，所述煲盖合盖状态下将所述蒸汽输出管路和所述蒸汽输入管路接通，所述煲盖包括透明外盖、透明内盖和位于二者之间的中空夹层，所述蒸汽输入管路经过所述中空夹层连通至所述烹饪腔。
  7. 如权利要求6所述的蒸汽饭煲，其特征在于，所述蒸汽输入通道上设有第一折弯段，所述第一折弯段通过改变蒸汽流向来缓冲蒸汽气流冲击。
  8. 如权利要求6所述的蒸汽饭煲，其特征在于，所述蒸汽输入管路包括设于所述煲盖中心的进气接头、设于所述煲盖一侧的对接接头以及将二者连接的第一连接管，所述第一连接管位于所述中空夹层内。
  9. 如权利要求1所述的蒸汽饭煲，其特征在于，所述第一透明视窗在圆周方向的可视角度大于等于200度且小于等于260度。
  10. 如权利要求3所述的蒸汽饭煲，其特征在于，所述底座包括内胆隔热座和围绕所述内胆隔热座设置的底座外壳，所述内胆隔热座和所述底座外壳一体成型，所述外罩安装在所述底座外壳上围成所述容置腔，所述内胆隔热座位于所述内胆下方。
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