AU2015100728A4 - Design Method for Cookware for Making Youtiao - Google Patents

Description

Design Method for Cookware for Making Youtiao Field of the Invention The invention relates to a design method for kitchen cookware, especially to a design method for cookware for making youtiao. 5 Description of prior art Currently the cookware for making youtiao has a round shape, youtiao floated on the surface of oil would move to the edge of the cookware under the flow effect, youtiao would bend in a shape 10 similar to the shape of the edge, the shape of youtiao turns into arcuate shape resulted in reducing the qualification rate of youtiao. In order to maintain the straight shape of youtiao, the youtiao should be manually placed back to the middle portion of the wok to be continued on frying. There are a plurality of youtiaoes fried 15 together in the cookware at the same time for increasing productivity, becaue of the round shape of cookware and the strip profiled shape of youtiao, the area where can hold a totally straight youtiao is the middle portion of the cookware, the portion close to the edge can not hold a totally straight youtiao, unless youtiao has a 20 bending shape, but a youtiao with bending shape is not a conforming product, so the cookwar with a round shape has a low productivity, it is need to continually hold the positon of youtiao in the cookware during the frying process, the action is manual, so the labor cost in increased. 25 How to avoid youtiao from bending, maintaining the straight shape of youtiao with no manual intervention so as to increase the qualification and reduce the labor cost, it is a problem waiting to be solved. 30 1/13 Summary of the present invention The object of the invention is to provide a design method for cookware for making youtiao. 5 Therefore, the invention provides a design method for cookware for making youtiao, the method comprises providing a wok support, a inner liner, a cover and a handle; further providing a receiving area with wide top and narrow bottom, the receiving area having a square opening facing up; 10 providing a main heating area arranged along the longitudinal direction of the receiving area at the bottom portion of the receiving area, and providing an auxiliary heating area arranged to the both sides of the main heating area; providing an air inlet communicated with the outside at the 15 bottom portion of the wok support along the longitudinal direction of the wok support; providing a first air channel communicated with the air inlet at the bottom portion of the wok support along the transverse direction of the wok support; 20 arranging for both the first confluence cavity communicated with the first air channel, and the second air channel communicated with the first confluence cavity to be located between the wok support and the handle; arranging for a second confluence cavity communicated with 25 the second air channel to be located between the cover, the handle and the wok support; arranging for an air outlet communicated with the second confluence cavity to be located between the cover and the edge of the opening of the inner liner, the air outlet facing the central plane 30 of the inner liner. Specifically, arranging for both the air inlet and the first air channel to be located in the heat collecting area at the bottom portion of 2/13 the wok support; arranging for the second air channel to be located below the second or third plane of the wok support (1); defining the space between the second or third arcuate surface 5 of the wok support and the handle as the first confluence cavity; defining the space between the first groove of the handle and the second or third plane of the wok support as the second air channel; defining the space between the cover, the handle and the 10 vertical rim of the wok support as the second confluence cavity; defining the space between the cover and the edge of the inner liner as the air outlet. Specifically, providing a fixed plane fitting well with the first plane of 15 the wok support to the handle, arranging for a first supporting plane to be located at a distance from the second arcuate surface; arranging for a second supporting plane to be parallel with and located at a distance from the second plane of the wok support; 20 arranging for a mounting plane to be parallel with the fixed plane; arranging for two side planes to fit well with the wok support; using the space surrounded by the fixed plane, the first supporting plane, the second supporting plane, the mounting plane, 25 and two side planes for receiving hand. Specifically,defining the area surrounded by the first plane, the second arcuate surface, the first arcuate surface and the third arcuate surface as a heat collecting area; 30 arranging for the second plane to transition to the first plane through the second arcuate surface; arranging for the third plane to transition to the first plane through the third arcuate surface; arranging for the second plane to transition to the third plane 3/13 through the first arcuate surface; arranging for the second plane and the third plane to be symmetrical about the central plane of the first arcuate surface; arranging for the second arcuate surface and the third arcuate 5 surface to be symmetrical about the central plane of the first arcuate surface; arranging for the second plane and the third plane to be vertical to each other. 10 Specifically, providing a peripheral wall fitting well with the inner shape of the wok support to the inner liner. Preferably, arranging for the main heating area to be located above the heat collecting area, and arranging for the auxiliary heating area 15 to be located above the second or third plane of the wok support. Preferably, arranging for the material of the inner liner to be food grade stainless steel. 20 Advantageous Effects 1. Because the main heating area is arranged above the heat collecting area, the temperature of the main heating area is obviously higher than the temperature of the auxiliary heating area located on both sides of the main heating area, therefore oil near 25 the first arcuate surface moves up under the effect of the temperature difference, while oil near the second or third plane moves down to the first arcuate surface, youtiao floated on the surface of oil moves to the edge of the cookware, and stops at the edge, because the edge of the cookware that is the first or second 30 plane is with a plane shape, youtiao has a straight shape, so the qualification rate is increased. 2. The straight youtiao rolls slowly at the edge of the cookware under the oil flow effect combined with the air flow effect, rolling is 4/13 good for youtiao to heat evenly so as to make youtiao with good appearance, and with the same color. 3. The receiving area with a square opening can fry a plurality of 5 youtiaoes together at the same time, and each youtiao is straight, so the productivity is increased. Brief description of the drawing In the following, the invention will be described in greater detail by 10 means of some embodiments with reference to the accompanying drawings, in which Fig.1 is a 3d-drawing of cookware for making youtiao of the invention; Fig.2 is a sectional view of Fig.1, adding one youtiao, oil is hiden; 15 Fig.3 is a exploded view of Fig.1; Fig.4 is a front view of Fig.2; Fig.5 is a 3d-drawing of making youtiao in round cookware; Fig.6 is a top view of Fig.5; Fig.7 is a sectional view of round wok in Fig.5; 20 Fig.8 is a 3d-drawing of pouring oil from round cookware to the cookware shown in Fig.1; Fig.9 is a 3d-drawing of making youtiao in the inner liner shown in Fig.8; Fig.10 is a top view of Fig.9; 25 Fig.11 is a sectional view of wok support in Fig.1 along the longitudinal direction; Fig.12 is a sectional view of wok support in Fig.1 along the transverse direction; Fig.13 is a 3d-drawing of handle in Fig.1; 30 Fig.14 is a 3d-drawing of the handle in Fig.1 from another view angle; Fig.15 is a sectional view in Fig.14 along A-A direction. 1. the wok support; 2. the inner liner; 3. the handle; 4. the cover; 5/13 5. the supporting plate; 6. the air inlet; 7. the first air channel; 8. the first confluence cavity; 9. the second air channel; 10. the second confluence cavity; 11. the air outlet; 0. the youtiao; 101. the first plane; 102. the second plane; 103.the third plane; 5 104.the first arcuate surface; 105. the second arcuate surface; 106. the third arcuate surface; 107. the heat collecting area; 108. the opening; 109. the front vertical plane; 110. the rear vertical plane; 111. the first receiving cavity; 112. the first through hole; 113. the second through hole; 10 114. the vertical rim; 115. the second receiving cavity; 116. the profiled through hole; 31. the fixed plane; 32. the first supporting plane; 33. the second supporting plane; 34. the mounting plane; 35. the first groove; 36. the second groove; 37. the side plane; 38. the third through hole; 15 39. the third receiving cavity. Detailed description of the preferred embodiment Fig.1 and Fig.3 are 3d-drawings relative to an embodiment of a cookware according to the present invention. 20 The cookware has one wok support 1 with a square profile, the cookware comprises two removable handles 3, four supporting plates, one inner liner 2, two covers 4, and a plurality of fastening bolts and nuts. There is a first receiving cavity 111 for receiving the inner liner 2 at the middle portion of the wok support 1, there is a 25 second receiving cavity 115 for receiving the handle 3 at each side of the wok support 1, there are two profiled through holes 116 on each the front and rear vertical plane 109,110. Firstly the handle 3 is assembled in the second receiving cavity 115, secondly the supporting plate 5 is assembled in the profiled through 30 hole 116 of the wok support 1, thirdly the supporting plate 5 and the handle 3 are fastened by the fastening bolts and nuts such that the handle 3 can not uncouple from the wok support 1 with the help of limiting effect from the profiled through hole 116 to the 6/13 supporting plate 5; fourthly the inner liner 2 is put into the first receiving cavity 111, the inner liner 2 can be fitted well with the first receiving cavity 111 with the help of the interference effect between them, finally the cover 4 is partly studded in the 5 responding second groove 36 of the handle 3, the cover 4 can be fastened to the handle 3 with the help of the interference effect between them. When the assemble is done, the cookware has a receiving area with wide top and narrow bottom for receiving youtiao and oil, the receiving area has a square opening facing up. 10 Referring to Fig.11 and Fig.12, there is a first plane 101 arranged at the bottom of the wok support 1, a solid protrudes from the middle portion of the first plane 101, a second plane 102 extends from the top portion of the solid toward one side, a third plane 103 extends 15 from the top portion of the solid toward the other side, the second plane 102 transitions to the first plane 101 through the second arcuate surface 105, the third plane 103 transitions to the first plane 101 through the third arcuate surface 106, the second plane 102 transitions to the third plane 103 through the first arcuate surface 20 104; the second plane 102 and the third plane 103 are symmetrical about the central plane of the first arcuate surface 104; the second arcuate surface 105 and the third arcuate surface 106 are symmetrical about the central plane of the first arcuate surface 104; the second plane 102 and the third plane 103 are vertical to each 25 other. There is a vertical rim 114 arranged straight up at the top portion of the second plane 102 and the third plane 103, an opening 108 for avoiding the projecting lip of the inner liner 2 is arranged near to 30 the top portion of the front and rear vertical plane 109,110. There is a first receiving cavity 111 surrounded by the second plane 102, the third plane 103, the first arcuate surface 104, the front vertical plane 109, the rear vertical plane 110 and the vertical rim 114 for receiving the inner liner 2. A solid area surrounded by the first plane 7/13 101, the second arcuate surface 105, the first arcuate surface 104 and the third arcuate surface 106 is defined as the heat collecting area 107, there is a first through hole 112 arranged along the axial direction of the first arcuate surface 104 in the heat collecting area 5 107, the first through hole 112 passes through the front and rear vertical plane 109,110 of the wok support 1, there are five second through holes 113 arranged equidistantly along the left-right direction of the wok support 1 in the heat collecting area 107, the second through hole 113 passes through the second and third 10 arcuate surface 105,106, the second through hole 113 communicates with the first through hole 112. Referring to Fig.15, the handle 3 comprises a fixed plane 31, a first supporting plane 32 extends straight up and vertically from the end 15 portion of the fixed plane 31, a second supporting plane 33 extends obliquely from the end portion of the first supporting plane 32 to the fixed plane 31, a mounting plane 34 extends from the end portion of the second supporting plane 33, the mounting plane 34 is parallel with the fixed plane 31. 20 Referring to Fig.14, the handle 3 consists of a fixed plane 31, a first supporting plane 32, a second supporting plane 33, a mounting plane 34 and two side planes 37. A third receiving cavity 39 consisting of one fixed plane 31, one first supporting plane 32, one 25 second supporting plane 33 and two side planes 37 is used for receiving hand, the third receiving cavity 39 has an opening facing right. There are two third through holes 38 for assembling fastening bolts arranged to each side plane 37 of the handle 3. 30 Referring to Fig.13, there are eleven first grooves 35 arranged equidistantly on the second supporting plane 33, the first groove 35 extends to the first supporting plane 32 and the mounting plane 34, the mounting plane 34 provides a second groove 36 for receiving part of cover 4. 8/13 Referring to Fig.2 and Fig.4, because the inner liner 2 has a peripheral wall fitting well with the inner shape of the wok support 1, heat from the heat collecting area 107 of the wok support 1 can 5 transfer to the corresponding bottom portion of the inner liner 2 very well, heat from the second and third plane 102,103 can transfer to the corresponding side plane of the inner liner 2 very well. Because the temperature of the heat collecting area 107 is obviously higher than the temperature of the second or third plane 10 102,103, the bottom portion of the receiving area of the inner liner 2 becomes the main heating area, two sides of the main heating area that is the two slopes of the inner liner 2 become the auxiliary heating area. 15 The fixed plane 31 of the handle 3 fits well with the first plane 101 of the wok support 1, there is a certain distance between the first supporting plane 32 and the second or third arcuate surface 105,106 of the wok support 1, the second supporting plane 33 of the handle 3 is parallel with the second or third plane 102,103, and 20 there is a certain distance between the second supporting plane 33 and the second or third plane 102,103. The cover 4 is partly studded in the mounting plane 34 of the handle 3, there is a certain distance between the inner top plane of 25 the cover 4 and the top plane of the inner liner 2. The first through hole 112 arranged along the longitudinal direction of the wok support 1 is defined as the air inlet 6 for communicating with the outside, the second through hole 113 arranged along the 30 transverse direction of the wok support 1 is defined as the first air channel 7 for communicating with the air inlet 6, the first and second through hole 112,113 are arranged at the bottom portion of the wok support 1. 9/13 The cavity formed between the first supporting plane 32 of the handle 3 and the second or third arcuate surface 105,106 of the wok support 1 is defined as the first confluence cavity 8 for communicating with the first air channel, the cavity formed 5 between the first groove 35 of the second supporting plane 33 of the handle 3 and the second or third plane 102,103 of the wok support 1 is defined as the second air channel 9 for communicating with the first confluence cavity 8, the cavity formed between the cover 4 and the mounting plane 34 of the handle 3 and the vertical 10 rim 114 of the wok support 1 is defined as the second confluence cavity 10 for communicating with the second air channel 9, the space formed between the edge of the opening of the inner liner 2 that is the top plane of the inner liner 2 and the inner top plane of the cover 4 is defined as the air outlet 11 for communicating with 15 the second confluence cavity 10, the air outlet 11 faces the central plane of the inner liner 2, the angle formed between the direction of the air from the outlet 11 and the oil surface of the inner liner 2 is ten degrees. 20 Referring to Fig.5 and Fig.6, it is a view of making youtiao by traditional cookware with a round shape, oil flows in the wok due to the effect of the temperature difference when oil is heated, referring to Fig.7. The youtiao 0 in the round wok moves to the edge of the wok under the flow effect, finally the youtiao 0 is at edge of 25 the wok, the youtiao 0 bends in a shape similar to the shape of the edge due to staying at the edge for a long time, the shape of youtiao 0 turns into arcuate shape, a youtiao with bending shape is not a conforming product, in order to maintain the straight shape of youtiao, youtiao 0 should be manually placed back to the middle 30 portion of the wok to be continued on frying so as to make a conforming product. There are a plurality of youtiaoes 0 fried together in the cookware at the same time for increasing productivity, becaue of the round 10/13 shape of cookware and the strip profiled shape of youtiao 0, the area where can hold a totally straight youtiao 0 is the middle portion of the cookware, the portion close to the edge can not hold a totally straight youtiao 0, unless youtiao 0 has a bending shape, 5 but a youtiao 0 with bending shape is not a conforming product, so the cookware with a round shape can only make three conforming youtiaoes 0 from five youtiaoes 0 with no manual intervention. Fig.8 is a 3d-drawing of pouring oil from round cookware to the 10 cookware shown in Fig.1, in order to make comparison between the square cookware and the traditional round cookware. Referring to Fig.4, because the temperature of the main heating area is obviously higher than the temperature of the auxiliary heating area, therefore oil near the first arcuate surface 104 moves up under the 15 effect of the temperature difference, while oil near the second or third plane 102,103 moves down to the first arcuate surface 104, youtiao 0 floated on the surface of oil moves to the edge of the inner liner 2, and stops at the edge, because the edge of the inner liner 2 is with a plane shape, youtiao 0 has a straight shape, the 20 youtiao is a conforming product. After the cookware is heated, the temperature of the air in the air inlet 6 is higher than the temperature of the air in the second air channel 9, and the air outlet 11 locates at the top portion of the 25 cookware, therefore air from outside through the air inlet 6 passes through the first air channel 7, the first confluence cavity 8, the second air channel 9, the second confluence cavity 10 in sequence, finally air come out from the air outlet 11. The angle between the direction of the air from the air outlet 11 and the oil surface is about 30 ten degrees, air flow in this direction blows the upper edge of the youtiao 0 near the edge of the inner liner 2 so as to make the youtiao 0 roll around its axis in clockwise direction, the flow effect of oil help youtiao 0 roll, rolling is good for youtiao 0 to heat evenly so as to make youtiao 0 with good appearance, and with the same 11/13 color. There are a plurality of youtiaoes 0 fried together in the square cookware at the same time for increasing productivity, five 5 youtiaoes 0 can be hold in the receiving area according to the oil quantity in the receiving area, because the receiving area has a square opening while the youtiao 0 has a strip profiled shape, five youtiaoes 0 can be placed one by one in the receiving area, the straight youtiao 0 rolls around its axis in the receiving area under 10 the flow effect, especially youtiao rolls slowly at the edge of the cookware, Therefore, the square cookware can fry five conforming youtiaoes 0 with no manual intervention, referrign to Fig.9 and Fig.10. 15 The first plane 101 of the wok support 1 can be placed on the fire to heat directly, when the material of the wok support 1 is metal, such as iron, aluminum, copper or alloy. When the material of wok support 1 is iron, the first plane 101 of the cookware can be placed on the electromagnetic oven. The material of the inner liner 2 is 20 food grade stainless steel, such that the youtiao 0 fried from the inner liner 2 is safe to eat. The temperature of oil in the receiving area changes slowly due to the effect of the heat collecting area 107, especially when a plurality 25 of doughs are just placed into the cookware, the temperature of oil reduces down, but the heat from heat collecting area 107 supplies the lost heat quicklyso as to slow down the temperature drop, thus the temperature of oil is still in the frying range. 30 The oil in the receiving area is mainly heated by the first arcuate surface 104 above the heat collecting area 107 and assistantly heated by the second and third plane 102,103, such arrangement increases an oil flow in the middle portion of the receiving area, that is above the first arcuate surface 104 moving up along the its axis, 12/13 and increases an oil flow near the second or third plane 102,103 moving down, so the oil on the surface moves from the middle portion of the receiving area along the axial direction of the first arcuate surface 104 to the edge of the cookware. Thus the youtiao 0 5 moves directionally to the edge of cookware after rising to the surface of oil, rather than to rotate in clockwise or anticlockwise direction on the oil surface. After the youtiao 0 moves to the edge of the cookware, the straight youtiao 0 rolls around its axis in the receiving area under the oil flow effect combined with the air flow 10 effect, rolling is good for youtiao 0 to heat evenly so as to make youtiao 0 with good appearance, and with the same color. When there are a plurality of youtiaoes 0 in the cookware, youtiaoes 0 arrange themselves into a queue as shown in Fig.9 and Fig.10. Oil in the inner liner 2 can be poured conveniently to the container 15 through the lip projecting outwardly from the portion near the opening of inner liner 2, after the frying process is finished. The oil on the surface moves radially to the edge of the round cookware because the heating plane at the bottom of the wok is 20 circular. So the youtiao 0 rotates in clockwise or anticlockwise direction on the oil surface so as to make the length direction of youtiao 0 align with the radial direction of the wok as moving to the edge of cookware. When there are a plurality of youtiaoes 0 in the wok, them collide to one another and arrange higgledy-piggledy in 25 the wok resulted in wasting space, it is need to make them in order with manual intervention so as to place more youtiaoes 0 in the wok. The arcuate surface is arranged to connect planes of the wok 30 support 1 to make the temperature distribution and transmission more even, and such arrangement is convenient for manufacturing. 13/13

Claims (7)

1. A design method for cookware for making youtiao, comprising providing a wok support (1), a inner liner (2), a cover (4) and a handle (3), characterized by 5 further providing a receiving area with wide top and narrow bottom, the receiving area having a square opening facing up; providing a main heating area arranged along the longitudinal direction of the receiving area at the bottom portion of 10 the receiving area, and providing an auxiliary heating area arranged to the both sides of the main heating area; providing an air inlet (6) communicated with the outside at the bottom portion of the wok support (1) along the longitudinal direction of the wok support; 15 providing a first air channel (7) communicated with the air inlet (6) at the bottom portion of the wok support (1) along the transverse direction of the wok support; arranging for both the first confluence cavity (8) communicated with the first air channel (6), and the second air 20 channel (9) communicated with the first confluence cavity (8) to be located between the wok support (1) and the handle (3); arranging for a second confluence cavity (10) communicated with the second air channel (9) to be located between the cover (4), the handle (3) and the wok support (1); 25 arranging for an air outlet (11) communicated with the second confluence cavity (10) to be located between the cover (4) and the edge of the opening of the inner liner, the air outlet (11) facing the central plane of the inner liner (2). 30

2. A design method for cookware for making youtiao according to claim 1, characterized by arranging for both the air inlet (6) and the first air channel 1/4 (7) to be located in the heat collecting area (107) at the bottom portion of the wok support (1); arranging for the second air channel (9) to be located below the second or third plane (102,103) of the wok support (1); 5 defining the space between the second or third arcuate surface (105,106) of the wok support (1) and the handle (3) as the first confluence cavity (8); defining the space between the first groove (35) of the handle (3) and the second or third plane (102,103) of the wok 10 support (1) as the second air channel (9); defining the space between the cover (4), the handle (3) and the vertical rim (114) of the wok support (1) as the second confluence cavity (10); defining the space between the cover (4) and the edge of 15 the inner liner (2) as the air outlet (11).

3. A design method for cookware for making youtiao according to claim 2, characterized by providing a fixed plane (31) fitting well with the first plane 20 (101) of the wok support (1) to the handle (3); arranging for a first supporting plane (32) to be located at a distance from the second arcuate surface (105); arranging for a second supporting plane (33) to be parallel with and located at a distance from the second plane (102) of the 25 wok support (1); arranging for a mounting plane (34) to be parallel with the fixed plane (31); arranging for two side planes (37) to fit well with the wok support (1); 30 using the space surrounded by the fixed plane (31), the first supporting plane (32), the second supporting plane (33), the mounting plane (34), and two side planes (37) for receiving hand.

4. A design method for cookware for making youtiao 2/4 according to claim 2, characterized by defining the area surrounded by the first plane (101), the second arcuate surface (105), the first arcuate surface (104) and the third arcuate surface (106) as a heat collecting area (107); 5 arranging for the second plane (102) to transition to the first plane (101) through the second arcuate surface (105); arranging for the third plane (103) to transition to the first plane (101) through the third arcuate surface (106); arranging for the second plane (102) to transition to the 10 third plane (103) through the first arcuate surface (104); arranging for the second plane (102) and the third plane (103) to be symmetrical about the central plane of the first arcuate surface (104); arranging for the second arcuate surface (105) and the 15 third arcuate surface (106) to be symmetrical about the central plane of the first arcuate surface (104); arranging for the second plane (102) and the third plane (103) to be vertical to each other. 20

5. A design method for cookware for making youtiao according to claim 2, characterized by providing a peripheral wall fitting well with the inner shape of the wok support (1) to the inner liner (2). 25

6. A design method for cookware for making youtiao according to claim 1, characterized by arranging for the main heating area to be located above the heat collecting area (107), and arranging for the auxiliary heating area to be located above the second or third plane (102,103) 30 of the wok support (1).

7. A design method for cookware for making youtiao according to claim 1, characterized by arranging for the material of the inner liner (2) to be food 3/4 grade stainless steel. 4/4