Cushion frame and electric stewpot

Abstract

The cushion frame comprises a cushion plate and supporting legs arranged on the lower side of the cushion plate, a flow guide face is arranged on the lower surface of the cushion plate and is in an ascending step shape from the center of the cushion plate to the outer edge, and a plurality of bubble breaking channels are formed in the position, close to the outer edge, of the cushion plate. According to the cushion frame, the flow guide face is arranged on the lower surface of the cushion plate, the flow guide face is in the rising step shape from the center of the cushion plate to the outer edge, bubbles below the cushion plate can be guided to the outer edge and escape through the bubble breaking channel, and when the bubbles pass through the rising step-shaped flow guide face, part of the bubbles are broken into small bubbles; and the bubbles are crushed into smaller bubbles again when passing through the bubble crushing channel, so that noise and impact force generated by crushing when the bubbles emerge from the water surface can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of cooking utensils, and in particular to a support frame and an electric stew pot. Background Art

[0002] When the electric stew pot is working, a large number of small bubbles will be generated on the surface of the heating plate. The bubbles will be blocked by the support and the stew pot during their rising process. The small bubbles will aggregate to form large bubbles and then break after floating to the surface, producing a loud bubble breaking sound. At the same time, the impact force generated by the bubble breaking acts on the stew pot, causing the stew pot to produce shaking noise. At present, some support racks are set as a whole pad, and bubbles are easy to aggregate under the bottom plate to form large bubbles, so that the electric stew pot is noisy during operation. Utility Model Content

[0003] Based on this, it is necessary to provide a support frame and an electric stew pot that can reduce noise.

[0004] The present application provides a pad frame, comprising a pad plate and a support leg arranged on the lower side of the pad plate, the lower surface of the pad plate is provided with a guide surface, the guide surface is in an ascending step shape from the center of the pad plate to the outer edge, and the pad plate is provided with a plurality of bubble breaking channels near the outer edge.

[0005] The pad frame provided by the present application is used in an electric stew pot for water-insulated stewing. By setting a guide surface on the lower surface of the pad, and the guide surface is in an ascending step shape from the center of the pad to the outer edge, the bubbles under the pad flow to the outer edge of the pad under the guidance of the guide surface. In addition, since the pad is provided with a bubble-breaking channel near the outer edge, the bubbles guided to the outer edge of the pad can escape through the bubble-breaking channel, and when passing through the bubble-breaking channel, the bubbles are squeezed and broken into smaller bubbles. In addition, since the guide surface is in an ascending step shape, eddies will be generated locally at the corners of the steps due to the sudden change of the local flow channel, so that the bubbles will shrink and crack to a certain extent, so that the bubbles will be partially broken before passing through the bubble-breaking channel, so that the volume of the bubbles flowing to the bubble-breaking channel will not be too large, thereby improving the overall bubble-breaking effect. Since the larger the bubbles that float to the surface, the greater the noise, and the greater the impact force generated by the bubble breaking, the present application sets an ascending step-shaped guide surface so that the bubbles are broken into smaller bubbles before floating to the surface, thereby reducing noise and impact.

[0006] In one of the embodiments, the upper surface of the pad is configured to be in a stepped shape that matches the guide surface, so that the pad is in an ascending stepped shape from the center to the outer edge.

[0007] In this way, stew pots of different sizes can be placed on different step surfaces, so that the support rack has strong versatility.

[0008] In one embodiment, the upper surface of the backing plate is successively provided with a base surface, a first vertical surface, a first step surface, a second vertical surface, and a second step surface from the center to the outer edge. A plurality of first support ribs are arranged at intervals at the connection between the first vertical surface and the first step surface, and a plurality of second support ribs are arranged at intervals at the connection between the second vertical surface and the second step surface. The top ends of the second support ribs are higher than the top ends of the first support ribs.

[0009] In this way, the first support ribs can be used to support the smaller-size stew pot, and the second support ribs can be used to support the larger-size stew pot, so that the pad rack can be applicable to at least two sizes of stew pots. In addition, since the first support ribs are arranged at the connection between the first vertical surface and the first step surface, and the second support ribs are arranged at the connection between the second vertical surface and the second step surface, it can be avoided that the first support ribs and the second support ribs cause local thick glue during processing, resulting in shrinkage on the lower surface of the backing plate and affecting the bubble diversion effect.

[0010] In one embodiment, the top ends of the first support ribs are flush with the second step surface.

[0011] In this way, the first support ribs and the second step surface can be used together to support the stew pot, so that the pad rack can have multiple ways to support the stew pot and can support stew pots of different size specifications.

[0012] In one embodiment, the regions on the diversion surface corresponding to the base surface, the first step surface, and the second step surface are set as inclined surfaces or arc surfaces with the outer side higher and the inner side lower.

[0013] In this way, it is beneficial to guide the bubbles below the backing plate from the center of the backing plate to the outer edge, thereby reducing the aggregation of bubbles below the backing plate.

[0014] In one embodiment, a convection hole and a first baffle rib are provided in the central region of the backing plate. The first baffle rib surrounds the convection hole, and the first baffle rib protrudes downward relative to the lower surface of the backing plate.

[0015] When the electric stew pot is working, a hot zone with a higher water temperature is formed near the outer edge of the backing plate, while a cold zone with a lower temperature is formed in the region between the lower part of the stew pot and the upper part of the backing plate. Due to the intense activity of water molecules in the hot zone, the density is relatively small, and it will flow upward. The water in the cold zone will flow downward due to its relatively large density. By providing the convection hole, the water in the cold zone can flow to the lower part of the backing plate through the convection hole and flow toward the outer edge of the backing plate. Thus, the cold zone and the hot zone are interconnected to form a circulating heat convection, so that the water body in the heating cavity can be heated faster, improving the overall thermal efficiency of the electric stew pot. By providing the first baffle rib, the bubbles can be intercepted to prevent the bubbles below the backing plate from directly escaping from the convection hole.

[0016] In one embodiment, the bottom end of the first retaining rib is higher than the bottom end of the supporting feet.

[0017] In this way, when the cushion rack is placed in the heating cavity of the electric slow cooker, the first retaining rib does not contact the heating plate, so that the water flowing down from the convection holes can flow over the first retaining rib from below to the outer edge of the cushion plate, ensuring the thermal convection cycle in the heating cavity.

[0018] In one embodiment, a second retaining rib extending downward is provided at the outer edge of the cushion plate.

[0019] In this way, the second retaining rib can prevent air bubbles from escaping directly from the outer edge of the cushion plate without passing through the bubble-breaking channel. Since the air bubbles escaping directly from the outer edge of the cushion plate are relatively large in volume and the cracking noise is also relatively large, in this embodiment, by providing the second retaining rib, the situation where air bubbles escape directly from the outer edge of the cushion plate can be reduced, so that the air bubbles are broken after passing through the bubble-breaking channel and then escape upward, thereby further reducing the noise.

[0020] In one embodiment, the bubble-breaking channel is provided on the second retaining rib and horizontally penetrates the inner and outer side surfaces of the second retaining rib.

[0021] In this way, when the air bubbles are guided to the vicinity of the outer edge of the cushion plate, they can escape through the bubble-breaking channel on the second retaining rib, so that the bubble-breaking channel can break the air bubbles, and the stewing pot will not block the air bubbles escaping from the bubble-breaking channel, thus avoiding the air bubbles from aggregating again on the bottom surface of the stewing pot.

[0022] In one embodiment, the bubble-breaking channel is provided on the cushion plate and vertically penetrates the upper and lower side surfaces of the cushion plate.

[0023] In this way, when the air bubbles are guided to the vicinity of the outer edge of the cushion plate, they can escape upward through the bubble-breaking channel on the cushion plate, so that the bubble-breaking channel can break the air bubbles.

[0024] In one embodiment, the supporting feet are connected to the lower end of the second retaining rib.

[0025] In this way, the supporting feet will not affect the flow of air bubbles on the guiding surface, and the supporting feet are arranged at this position to stably support the cushion plate, thereby stably supporting the stewing pot.

[0026] This application also provides an electric slow cooker, including: a base, a stewing pot, an upper cover, and the above-mentioned cushion rack. A heating cavity is provided in the base, a heating plate is provided on the bottom wall of the heating cavity, the cushion rack is arranged in the heating cavity, the stewing pot is placed on the cushion rack, and the upper cover covers the base to cover the heating cavity.

[0027] As described above, by providing the above-mentioned backing plate, the electric slow cooker can divert the bubbles below the backing plate to the outer edge and escape through the bubble-breaking channel. When passing through the rising stepped diversion surface, some of the bubbles are broken into small bubbles, and when passing through the bubble-breaking channel, they are broken into even smaller bubbles again, thereby reducing the noise and impact generated when the bubbles float to the water surface and break.

[0028] In one embodiment, a convection hole and a first rib are provided in the central region of the backing plate. The first rib surrounds the convection hole, and the first rib protrudes downward relative to the lower surface of the backing plate. The heating plate includes a plate body and a heating tube provided below the plate body. The orthographic projection of the heating tube on the horizontal plane is located outside the orthographic projection of the first rib on the horizontal plane.

[0029] In this way, when a large number of bubbles generated by the heating tube heating the water body rise, they are located outside the first rib, so that the first rib can block the bubbles and prevent the bubbles from escaping through the convection hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0031] Figure 1 A perspective view of the back side of the pad rack according to an embodiment of the present application;

[0032] Figure 2 A perspective view of the front side of the pad rack according to an embodiment of the present application;

[0033] Figure 3 A top view of the pad rack according to an embodiment of the present application;

[0034] Figure 4 For Figure 3 The cross-sectional view along line A-A in

[0035] Figure 5 For Figure 3 The cross-sectional view along line B-B in

[0036] Figure 6 An exploded view of the electric slow cooker according to an embodiment of the present application;

[0037] Figure 7 A schematic diagram of assembling the large stewing pot in the electric slow cooker according to an embodiment of the present application;

[0038] Figure 8 For Figure 7Cross-sectional view of the structure shown;

[0039] Figure 9 Schematic diagram of assembling the middle stewing pot in the electric stewing pot according to an embodiment of the present application;

[0040] Figure 10 is Figure 9 Cross-sectional view of the structure shown;

[0041] Figure 11 Schematic diagram of assembling the small stewing pot in the electric stewing pot according to an embodiment of the present application;

[0042] Figure 12 is Figure 11 Cross-sectional view of the structure shown;

[0043] Figure 13 Cross-sectional view of the electric stewing pot in storage according to an embodiment of the present application.

[0044] Reference numerals: 100, base; 110, heating chamber; 120, hot zone; 130, cold zone; 200, stewing pot; 201, large stewing pot; 202, middle stewing pot; 203, small stewing pot; 300, upper cover; 400, heating plate; 410, plate body; 420, heating tube; 500, pad rack; 10, backing plate; 11, diversion surface; 121, base surface; 122, first vertical surface; 123, first step surface; 124, second vertical surface; 125, second step surface; 13, convection hole; 20, support leg; 30, first retaining rib; 40, second retaining rib; 50, broken bubble channel; 61, first support rib; 62, second support rib. Detailed implementation manners

[0045] To make the above objects, features and advantages of the present application more obvious and understandable, the following detailed description of the specific implementation manners of the present application will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0046] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the description of the present application are only for the purpose of illustration and do not represent the only implementation manner.

[0047] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0048] In this application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may mean that the first feature is in direct contact with the second feature, or the first feature is in indirect contact with the second feature through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or diagonally above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or diagonally below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0049] Unless otherwise defined, all technical and scientific terms used in the description of this application have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the description of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" used in the description of this application includes any and all combinations of one or more of the related listed items.

[0050] Please refer to Figures 1 to 5, this application provides a cushion rack 500. The cushion rack 500 includes a cushion plate 10 and support feet 20 provided on the lower side of the cushion plate 10. A diversion surface 11 is provided on the lower surface of the cushion plate 10. The diversion surface 11 is in a rising stepped shape from the center of the cushion plate 10 to the outer edge. A plurality of bubble-breaking channels 50 are provided near the outer edge of the cushion plate 10. The cushion rack 500 provided by this application is used in an electric stew pot for stewing with water separation. By providing the diversion surface 11 on the lower surface of the cushion plate 10, and the diversion surface 11 is in a rising stepped shape from the center of the cushion plate 10 to the outer edge, the bubbles below the cushion plate 10 are guided by the diversion surface 11 to flow to the outer edge of the cushion plate 10. Moreover, since the bubble-breaking channels 50 are provided near the outer edge of the cushion plate 10, the bubbles diverted to the outer edge of the cushion plate 10 can escape through the bubble-breaking channels 50. When passing through the bubble-breaking channels 50, the bubbles are squeezed and broken into smaller bubbles. In addition, since the diversion surface 11 is in a rising stepped shape, local eddy currents will be generated locally at the corners of the steps due to the sudden change of the local flow path, so that the bubbles will undergo a certain degree of shrinkage and cracking. Therefore, the bubbles will be partially broken before passing through the bubble-breaking channels 50, so that the volume of the bubbles flowing to the bubble-breaking channels 50 will not be too large, thus improving the overall bubble-breaking effect. Since the larger the bubbles floating on the water surface, the greater the noise and the greater the impact force generated by the bubble breaking, by providing the rising stepped diversion surface 11 in this application, the bubbles are broken into smaller broken bubbles before floating on the water surface, so that the noise and the impact force can be reduced.

[0051] Further, the upper surface of the cushion plate 10 is arranged in a stepped shape adapted to the diversion surface 11, so that the cushion plate 10 is in a rising stepped shape from the center to the outer edge. In this way, stew pots 200 of different sizes and specifications can be placed on different stepped surfaces, so that the cushion rack 500 has strong versatility.

[0052] Please refer to Figure 2 、 Figure 4 and Figure 5, In one embodiment, the upper surface of the backing plate 10 is successively provided with a base surface 121, a first vertical surface 122, a first stepped surface 123, a second vertical surface 124, and a second stepped surface 125 from the center to the outer edge. At the connection of the first vertical surface 122 and the first stepped surface 123, a plurality of first support ribs 61 are arranged at intervals. At the connection of the second vertical surface 124 and the second stepped surface 125, a plurality of second support ribs 62 are arranged at intervals. The top of the second support rib 62 is higher than the top of the first support rib 61. In this way, the first support rib 61 can be used to support the stew pot 200 with a smaller size, and the second support rib 62 can be used to support the stew pot 200 with a larger size, so that the pad rack 500 can be applicable to stew pots 200 of at least two size specifications. In addition, since the first support rib 61 is arranged at the connection of the first vertical surface 122 and the first stepped surface 123, and the second support rib 62 is arranged at the connection of the second vertical surface 124 and the second stepped surface 125, it can be avoided that the first support rib 61 and the second support rib 62 have local thick glue during processing, resulting in shrinkage on the lower surface of the backing plate 10 and affecting the diversion effect of air bubbles.

[0053] Further, the top of the first support rib 61 is flush with the second stepped surface 125. In this way, the first support rib 61 and the second stepped surface 125 can be used together to support the stew pot 200, so that the pad rack 500 can have multiple ways to support the stew pot 200 and can support stew pots 200 of different size specifications.

[0054] In this embodiment, please refer to Figures 1 to 3 , the backing plate 10 is generally square, the outer contour of the first stepped surface 123 is generally square, the outer contour of the base surface 121 is generally circular, four first support ribs 61 are arranged, and four second support ribs 62 are also arranged, and the first support ribs 61 and the second support ribs 62 are arranged staggeredly in the radial direction of the backing plate 10. The pad rack 500 provided in this embodiment can be used to support stew pots 200 of large, medium, and small specifications, as shown in Figure 6 . Among them, as shown in Figure 7 and Figure 8 , the four second support ribs 62 can be used to support the large stew pot 201; as shown in Figure 9 and Figure 10 , the four first support ribs 61 can be used to support the medium stew pot 202 or the small stew pot 203; as shown in Figure 11 and Figure 12As shown, a first support rib 61 and a part of the second stepped surface 125 cooperate to support a small stew pot 203, so that the pad rack 500 can be used to support four small stew pots 203. Of course, the shape of the base plate 10 can also be other shapes, such as circular. And the base plate 10 is not limited to only having two stepped surfaces. The base plate 10 can be provided with more or fewer stepped surfaces, and the number and arrangement of the support ribs are not limited to the above. As long as the upper surface of the base plate 10 is set in a stepped shape and provided with support ribs of different heights, it can support stew pots 200 of different size specifications.

[0055] As Figure 13 shown, when storing, the small stew pot 203 can be placed into the medium stew pot 202, then the medium stew pot 202 can be placed into the large stew pot 201, and finally the large stew pot 201 can be placed into the heating cavity 110 of the base 100 and placed on the pad rack 500. In this way, stew pots 200 of different specifications can be stored, which is very convenient.

[0056] Furthermore, the areas on the flow guiding surface 11 corresponding to the base surface 121, the first stepped surface 123, and the second stepped surface 125 are set as inclined surfaces or arc surfaces that are higher on the outside and lower on the inside. In this way, it is beneficial to guide the bubbles below the base plate 10 from the center of the base plate 10 to the outer edge, thereby reducing the aggregation of bubbles below the base plate 10.

[0057] Please refer to Figure 8 , where S represents the water level line; P represents the bubble path. Since a large number of bubbles will be generated in the water body when the electric stew pot is working, and the bubbles carry a large amount of heat energy, under the guiding action of the flow guiding surface 11, the bubbles below the base plate 10 will flow upward along the flow guiding surface 11 to the outer edge of the base plate 10. At the same time, the water flow below the base plate 10 will flow towards the outer edge of the base plate 10, so that a hot area 120 with a relatively high water temperature is formed near the outer edge of the base plate 10, while a cold area 130 with a relatively low temperature is formed in the area between the lower part of the stew pot 200 and the upper part of the base plate 10. Thus, two areas with obvious temperature differences are formed in the water body of the electric stew pot. The water in the hot area 120 will flow upward because the water molecules are active and the density is small, and the water in the cold area 130 will flow downward because the density is relatively large. In one embodiment, a convection hole 13 is provided in the central area of the base plate 10. In this way, the water in the cold area 130 can flow to the lower part of the base plate 10 through the convection hole 13 and flow towards the outer edge of the base plate 10. Since the upper surface of the base plate 10 is set in a stepped shape adapted to the flow guiding surface 11, the water flow above the base plate 10 can flow from the outer edge of the base plate 10 to the central convection hole 13. Thus, the cold area 130 and the hot area 120 are interconnected to form a circulating heat convection, so that the water body in the heating cavity 110 can be heated faster, improving the overall thermal efficiency of the electric stew pot.

[0058] Since the first support ribs 61 and the second support ribs 62 are both spaced apart on the upper surface of the pad 10, water can flow between adjacent first support ribs 61 and between adjacent second support ribs 62, so that the setting of the first support ribs 61 and the second support ribs 62 does not affect the thermal convection of the water.

[0059] See also Figure 1 The center area of the pad 10 is provided with a first baffle 30, which is arranged around the convection hole 13 and protrudes downward relative to the lower surface of the pad 10. In this way, the first baffle 30 can intercept bubbles and prevent the bubbles under the pad 10 from escaping directly from the convection hole 13.

[0060] For further information, see Figure 4 , the height of the first retaining rib 30 protruding from the lower surface of the pad 10 is H1, and H1 is 2mm to 15mm. In this way, it can be ensured that the first retaining rib 30 can intercept the bubbles on the lower surface of the pad 10 and prevent the bubbles from escaping from the convection holes 13 over the first retaining rib 30. Specifically, H1 can be 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, or any other value within the range of 2mm to 15mm.

[0061] For further information, see Figure 1 and Figure 2 A second baffle 40 extending downward is provided on the outer edge of the pad 10. The second baffle 40 can prevent bubbles from escaping directly from the outer edge of the pad 10 without passing through the bubble breaking channel 50. Since the bubbles escaping directly from the outer edge of the pad 10 are larger in volume and the noise of bursting is also larger, the second baffle 40 in this embodiment can reduce the occurrence of bubbles escaping directly from the outer edge of the pad 10, so that the bubbles are broken through the bubble breaking channel 50 and then escape upward, thereby further reducing the noise.

[0062] like Figure 4 As shown, the height of the second baffle 40 protruding from the lower surface of the pad 10 is H2, and H2 is 2mm to 15mm. In this way, it can be ensured that the second baffle 40 can intercept the bubbles on the lower surface of the pad 10, and prevent the bubbles from crossing the second baffle 40 and escaping directly from the outer edge of the pad 10 to affect the bubble crushing efficiency. Specifically, H2 can be 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, or any other value within the range of 2mm to 15mm. Since bubbles will partially aggregate when flowing through the guide surface 11, it is preferred that H2 ≥ H1 to ensure that the bubbles will not escape from the edge of the pad 10, thereby ensuring the bubble crushing effect of the bubble crushing channel 50 on the bubbles.

[0063] In one embodiment, as shown in Figure 1 and Figure 2 , the bubble-breaking channel 50 is provided on the second baffle rib 40 and transversely penetrates the inner and outer surface of the second baffle rib 40. In this way, when the bubbles are guided to the vicinity of the edge of the base plate 10, they can pass through the bubble-breaking channel 50 on the second baffle rib 40 and escape outward. Thus, the bubble-breaking channel 50 can break the bubbles, and the stew pot 200 will not block the bubbles escaping from the bubble-breaking channel 50, thereby avoiding the bubbles from aggregating again on the bottom surface of the stew pot 200.

[0064] In another embodiment (not shown), the bubble-breaking channel 50 is provided on the base plate 10 and longitudinally penetrates the upper and lower surfaces of the base plate 10. In this way, when the bubbles are guided to the vicinity of the outer edge of the base plate 10, they can pass through the bubble-breaking channel 50 on the base plate 10 and escape upward. Thus, the bubble-breaking channel 50 can break the bubbles. It can be understood that a plurality of bubble-breaking channels 50 are arranged close to the outer edge of the base plate 10, and the size of the stew pot 200 does not exceed the range surrounded by the bubble-breaking channels 50, that is, the stew pot 200 is located inside the plurality of bubble-breaking channels 50. In this way, the bottom surface of the stew pot 200 will not block the bubbles discharged from the bubble-breaking channels 50, thereby avoiding the bubbles from aggregating again on the bottom surface of the stew pot 200.

[0065] Please refer to Figure 1 and Figure 2 . In one embodiment, the feet 20 are connected to the lower end of the second baffle rib 40. In this way, the feet 20 will not affect the flow of the bubbles on the flow guiding surface 11, and the feet 20 are arranged at this position to stably support the base plate 10, thereby stably supporting the stew pot 200. However, this is not limited thereto. In other embodiments, a plurality of feet 20 can also be arranged on the lower surface of the base plate 10.

[0066] Please refer to Figures 6 to 12 . The present application further provides an electric stew pot, including: a base 100, a stew pot 200, an upper cover 300, and the above-mentioned pad rack 500. A heating cavity 110 is provided in the base 100, a heating plate 400 is provided on the bottom wall of the heating cavity 110, the pad rack 500 is arranged in the heating cavity 110, the stew pot 200 is placed on the pad rack 500, and the upper cover 300 covers the base 100 to cover the heating cavity 110. By providing the above-mentioned base plate 10, the electric stew pot can guide the bubbles below the base plate 10 to the outer edge and escape through the bubble-breaking channels 50. When passing through the rising stepped flow guiding surface 11, some bubbles are broken into small bubbles, and when passing through the bubble-breaking channels 50, they are broken into smaller bubbles again, thereby reducing the noise and impact force generated when the bubbles float to the water surface and break.

[0067] Please refer to Figure 8, the heating plate 400 includes a plate body 410 and a heating tube 420 disposed below the plate body 410. The orthographic projection of the heating tube 420 on the horizontal plane is located outside the orthographic projection of the first rib 30 on the horizontal plane. Thus, when a large number of bubbles generated by the heating tube 420 heating the water body rise, they are located outside the first rib 30, so that the first rib 30 can block the bubbles and prevent the bubbles from escaping from the convection holes 13.

[0068] It can be understood that the bottom end of the first rib 30 is higher than the bottom end of the support leg 20. Thus, when the pad holder 500 is placed in the heating cavity 110, the first rib 30 does not contact the heating plate 400, so that the water flow flowing down from the convection holes 13 can flow over the first rib 30 from below to the outer edge of the pad 10, ensuring the heat convection cycle in the heating cavity 110.

[0069] Further, please refer to Figure 8 , the height difference between the bottom end of the first rib 30 and the bottom end of the support leg 20 is L1, and L1 is 3 mm to 20 mm. It can be understood that if the height difference between the bottom end of the first rib 30 and the bottom end of the support leg 20 is L1, then when the pad holder 500 is placed in the heating cavity 110, the distance between the bottom end of the first rib 30 and the top surface of the heating plate 400 is also L1. If this distance L1 is too small, the water flow flowing down from the convection holes 13 is difficult to flow from below the first rib 30 to the side wall of the heating cavity 110, thus affecting the heat convection cycle; if this distance L1 is too large, the pad holder 500 will occupy a large space, resulting in that the height of the stewing pot 200 cannot be set too high or the height dimension of the electric stewing pot needs to be increased. In this embodiment, L1 is 3 mm to 20 mm, which neither affects the heat convection cycle of the water flow nor has too much impact on the overall dimensions of the stewing pot 200 or the electric stewing pot. Specifically, L1 can be 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, or any other arbitrary value within the range of 3 mm to 20 mm.

[0070] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0071] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the patent protection scope of the present application shall be subject to the appended claims.

Claims

1. A pad rack, characterized in that, It includes a backing plate (10) and feet (20) provided on the lower side of the backing plate (10). A flow guiding surface (11) is provided on the lower surface of the backing plate (10). The flow guiding surface (11) is in a rising stepped shape from the center of the backing plate (10) to the outer edge. A plurality of bubble breaking channels (50) are provided near the outer edge of the backing plate (10).

2. The pad rack according to claim 1, characterized in that, The upper surface of the backing plate (10) is arranged in a stepped shape adapted to the flow guiding surface (11), so that the backing plate (10) is in a rising stepped shape from the center to the outer edge.

3. The underframe according to claim 2, characterized in that, The upper surface of the backing plate (10) is successively provided with a base surface (121), a first vertical surface (122), a first step surface (123), a second vertical surface (124) and a second step surface (125) from the center to the outer edge. A plurality of first support ribs (61) arranged at intervals are provided at the connection of the first vertical surface (122) and the first step surface (123). A plurality of second support ribs (62) arranged at intervals are provided at the connection of the second vertical surface (124) and the second step surface (125). The top end of the second support rib (62) is higher than the top end of the first support rib (61).

4. The pad rack according to claim 3, characterized in that, The top end of the first support rib (61) is flush with the second step surface (125).

5. The mounting bracket according to claim 3, characterized in that, The areas on the flow guiding surface (11) corresponding to the base surface (121), the first step surface (123) and the second step surface (125) are arranged as inclined surfaces or arc surfaces with the outer side higher and the inner side lower.

6. The underframe according to claim 1, characterized in that, A convection hole (13) and a first retaining rib (30) are provided in the central area of the backing plate (10). The first retaining rib (30) surrounds the convection hole (13), and the first retaining rib (30) protrudes downward relative to the lower surface of the backing plate (10).

7. The mounting bracket according to claim 6, wherein The bottom end of the first retaining rib (30) is higher than the bottom end of the feet (20).

8. The underframe according to claim 1, characterized in that, A second retaining rib (40) extending downward is provided at the outer edge of the backing plate (10).

9. The mounting bracket according to claim 8, characterized in that The bubble breaking channels (50) are provided on the second retaining rib (40) and horizontally penetrate the inner and outer side surfaces of the second retaining rib (40).

10. The mounting bracket according to claim 1, characterized in that, The bubble breaking channels (50) are provided on the backing plate (10) and longitudinally penetrate the upper and lower side surfaces of the backing plate (10).

11. The pad rack according to claim 8, characterized in that, The feet (20) are connected to the lower end of the second retaining rib (40).

12. An electric slow cooker, characterized in that, It includes: A base (100), a stew pot (200), an upper cover (300) and a pad rack (500) as described in any one of claims 1-10. A heating cavity (110) is provided in the base (100). A heating plate (400) is provided on the bottom wall of the heating cavity (110). The pad rack (500) is provided in the heating cavity (110). The stew pot (200) is placed on the pad rack (500). The upper cover (300) covers the base (100) to cover the heating cavity (110).

13. The electric slow cooker according to claim 12, characterized in that, A convection hole (13) and a first retaining rib (30) are provided in the central area of the backing plate (10). The first retaining rib (30) surrounds the convection hole (13), and the first retaining rib (30) protrudes downward relative to the lower surface of the backing plate (10), The heating plate (400) includes a plate body (410) and a heating tube (420) disposed below the plate body (410), and a positive projection of the heating tube (420) on a horizontal plane is located outside a positive projection of the first retaining rib (30) on the horizontal plane.

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