A stir-frying machine

Abstract

The invention provides a cooking machine, which includes a frying pan. The frying pan is connected to a driving mechanism. The mouth and bottom of the frying pan are different irregular circular shapes. The bottom of the frying pan is an oval flat bottom. The wall of the frying pan slopes outward relative to the bottom, and the wall of the front part of the frying pan slopes outward relative to the bottom at an angle greater than that of the walls in other directions of the frying pan. Through the design of the irregularly shaped frying pan and in cooperation with the driving mechanism, the invention realizes better flipping and stir-frying of the pan, and can achieve flipping and stir-frying with the movement of one axis.

Description

Technical Field

[0001] The invention belongs to the field of catering kitchen equipment, in particular to a cooking machine. Background Art

[0002] Most existing woks use traditional round woks, which restrict the wok's motion to simulate a chef's stir-frying motion. This requires the coordinated movement of two or three axes, making the wok's drive mechanism complex, expensive, and difficult to market. Furthermore, cooking is typically done over high heat, and the outer diameter of a traditional round wok is typically around 400mm. This is because if the wok is too small, the vegetables will fly out of the wok during stir-frying. However, the actual area of the wok bottom that contacts the vegetables is only about 200mm in diameter. However, the entire bottom surface of a traditional wok is well exposed to the flames, resulting in high temperatures near the wok mouth outside the 200mm diameter area. This causes the wok wall to heat up near the wok mouth, causing the vegetables to splatter when stir-frying, resulting in scorching near the wok mouth and increasing the difficulty of cleaning the wok. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides a cooking machine.

[0004] The technical solutions of the present invention are as follows:

[0005] A cooking machine comprises a wok connected to a driving mechanism, wherein the wok mouth and the wok bottom are different shaped circles, the wok bottom is an elliptical flat bottom, the wok wall is inclined outward relative to the wok bottom, and the angle at which the wok wall at the front of the wok is inclined outward relative to the wok bottom is greater than that of the wok wall in other directions.

[0006] The angle between the pot wall at the front of the frying pan and the horizontal plane is 40-60 degrees, and the angle between the pot wall in other directions of the frying pan and the horizontal plane is 70-80 degrees.

[0007] The cooking machine includes a frame, on which a servo motor is provided. The servo motor is connected to one end of a swing arm through an output shaft of a reducer. The swing arm can rotate around the output shaft of the reducer. The other end of the swing arm is hinged to one end of a first connecting rod, the other end of the first connecting rod is hinged to one end of a second connecting rod, the other end of the second connecting rod is hinged to one end of a swing arm, the other end of the swing arm is connected to one end of a main shaft on the frame, and the other end of the main shaft is connected to a wok. When the swing arm rotates, the swing arm is driven to swing back and forth through the first connecting rod and the second connecting rod, and the swing arm drives the wok to make a reciprocating forward tossing and stir-frying motion through the main shaft.

[0008] A push-pull electromagnet is installed below the output shaft of the speed reducer. The push plate of the push-pull electromagnet is connected to the pot blocking block. There is a hole in the middle of the pot blocking block. The first equal-height screw passes through the hole in the middle of the pot blocking block and fixes the pot blocking block to the support plate of the frame, enabling the pot blocking block to perform a seesaw-like movement. The upper part of the pot blocking block is in a 7-shaped form, and the 7-shaped upper part of the pot blocking block faces the output shaft of the speed reducer. When the push-pull electromagnet is attracted, it can push the pot blocking block so that the 7-shaped upper part of the pot blocking block moves forward to block the movement path of the first connecting rod, making the second connecting rod perpendicular to the first connecting rod, causing the frying pan to flip forward until the position of the pot mouth is lower than that of the pot bottom.

[0009] There is a convex platform in the middle of the second connecting rod. The convex platform supports one end of the first connecting rod and one leg of the torsion spring. The other leg of the torsion spring is supported in the small hole in the middle of the first connecting rod. The torsion spring uses torque to keep the first connecting rod and the second connecting rod parallel.

[0010] The other end of the main shaft is equipped with a frying pan bracket, and a frying pan is installed on the frying pan bracket.

[0011] A position detection switch for detecting the attitude of the frying pan is installed below the swing arm.

[0012] A sheet metal housing is provided outside the frame. A waterproof power switch, a gas adjustment knob, a gas regulating valve, an ignition button, and an operation panel are provided on the sheet metal housing. A burner is installed in the middle of the frame.

[0013] A stir-frying machine of the present invention has the following beneficial effects:

[0014] 1. Through the design of an irregular special-shaped frying pan and in cooperation with the driving mechanism, better tossing and stir-frying can be achieved, and tossing and stir-frying can be realized with the movement of one shaft.

[0015] 2. The angle of the pot wall is relatively steep, which is convenient for the dishes in the pot to be well concentrated during stir-frying. The angle of the pot wall at the front of the frying pan is inclined outward relative to the pot bottom greater than that of the pot wall in other directions. It not only has a larger vegetable-receiving area but also is convenient for discharging the pot.

[0016] 3. The flat bottom of the pot is fully heated. The heat transfer efficiency of the steep pot wall is several times less than that of the pot bottom, and the pot wall near the pot mouth is not easily scorched.

[0017] 4. The present invention greatly reduces the labor intensity of the chef. The frying pan does not need to be held during the entire stir-frying process, and there is no need to pause when adding seasonings during the stir-frying process, greatly saving the pot discharging time. The set pot discharging time will automatically discharge the pot, and the chef only needs to place the plate below the frying pan.

[0018] 5. The structure of the present invention is simple, the performance is reliable, the cost is low, the selling price is cheap, and it is easy for small catering business owners to accept and is easy to promote. Description of the Drawings

[0019] Figure 1 is a schematic diagram of the external structure of the cooking machine of the present invention;

[0020] Figure 2 is a schematic diagram of the internal structure of the cooking machine of the present invention;

[0021] Figure 3 is a schematic diagram of the exploded view structure of the driving mechanism parts of the cooking machine of the present invention;

[0022] Figure 4 is a schematic diagram of the double positions of the pan - throwing movement of the cooking machine of the present invention;

[0023] Figure 5 is a schematic diagram of the double positions of the pan - discharging movement of the cooking machine of the present invention;

[0024] Figure 6 is a schematic diagram of the double positions of the movement of the pan - discharging stopper of the cooking machine of the present invention;

[0025] Figure 7 is a schematic diagram of the front, side and top - view angles of the frying pan of the cooking machine of the present invention;

[0026] Figure 8 is a schematic diagram of the movement state of the dishes in the pan during the pan - throwing movement of the cooking machine of the present invention;

[0027] In the figure, 1 - frame; 2 - sheet metal housing; 3 - waterproof power switch; 4 - gas regulating knob; 5 - ignition button; 6 - operation panel; 7 - frying pan bracket; 8 - frying pan; 9 - burner; 10 - push - pull electromagnet; 11 - position detection switch; 12 - second connecting rod; 13 - torsion spring; 14 - pan - discharging stopper; 15 - first connecting rod; 16 - swing arm; 17 - reducer; 18 - gas regulating valve; 19 - swing arm; 20 - servo motor; 21 - first bearing; 22 - main shaft; 23 - second bearing; 24 - first equal - height screw; 25 - spherical plain bearing; 26 - second equal - height screw; 27 - third equal - height screw; 28 - fourth equal - height screw; 29 - vegetables. Detailed implementation manners

[0028] The present invention will be described in detail below with reference to the accompanying drawings.

[0029] As Figures 1 to 8 shown, a cooking machine of the present invention includes a frying pan 8, and the frying pan 8 is connected to a driving mechanism. As Figure 7As shown, the mouth and bottom of the wok 8 are different-shaped circles. The bottom of the wok 8 is an oval flat bottom. The wall of the wok 8 slopes outward relative to the bottom, and the slope angle of the front wall of the wok 8 relative to the bottom is greater than that of the walls in other directions of the wok 8. The angle between the front wall of the wok 8 and the horizontal plane is 40 - 60 degrees, and the angle between the walls in other directions of the wok 8 and the horizontal plane is 70 - 80 degrees. The relatively steep wall angle is convenient for the dishes in the wok to be well concentrated during frying. The slope angle of the front wall of the wok 8 relative to the bottom is greater than that of the walls in other directions of the wok 8, which not only has a larger area for receiving dishes but also facilitates taking the dishes out of the wok. The flat bottom of the wok is fully heated. The heat transfer efficiency of the steep wall is several times less than that of the bottom, and the wall near the mouth of the wok is not easy to get scorched.

[0030] As Figure 1 shown, a sheet metal housing 2 is provided on the outside of the frame 1. A waterproof power switch 3, a gas adjustment knob 4, a gas control valve 18, an ignition button 5, and an operation panel 6 are provided on the sheet metal housing 2. A burner 9 is installed in the middle of the frame 1.

[0031] As Figure 2 and Figure 3 shown, the cooking machine includes a frame 1. A servo motor 20 is provided on the frame 1. The output shaft of the servo motor 20 is connected to one end of a swing arm 16 through a speed reducer 17. The swing arm 16 can rotate around the output shaft of the speed reducer 17. The other end of the swing arm 16 is hinged to one end of a first connecting rod 15. The other end of the first connecting rod 15 is hinged to one end of a second connecting rod 12. The other end of the second connecting rod 12 is hinged to one end of a swing arm 19. The other end of the swing arm 19 is connected to one end of a main shaft 22 on the frame 1. The other end of the main shaft 22 is connected to the wok 8. When the swing arm 16 rotates, it drives the swing arm 19 to make a reciprocating swing through the first connecting rod 15 and the second connecting rod 12. The swing arm 19 drives the wok 8 to make a reciprocating forward tossing and frying motion through the main shaft 22. A wok bracket 7 is installed at one end of the main shaft 22. The wok 8 is installed on the wok bracket 7. The other end of the main shaft 22 is installed with a swing arm 19. There is a spherical plain bearing 25 at the other end of the swing arm 19. The spherical plain bearing 25 is fixed to one end of the second connecting rod 12 by a second equal-height screw 26 to form a hinged movable joint.

[0032] A position detection switch 11 for detecting the attitude of the wok 8 is installed below the swing arm 19. There is a boss in the middle of the second connecting rod 12. The boss supports one end of the first connecting rod 15 and one leg of the torsion spring 13. The other leg of the torsion spring 13 is supported in a small hole in the middle of the first connecting rod 15. The torsion spring 13 uses torsion force to keep the first connecting rod 15 and the second connecting rod 12 parallel. One end hole of the first connecting rod 15 and the spiral coil of the torsion spring 13 are sleeved on the third equal-height screw 27 together. The third equal-height screw 27 is installed on the second connecting rod 12 to combine the first connecting rod 15 and the second connecting rod 12 into a movable joint; a second bearing 23 is installed in the other end hole of the first connecting rod 15 and is fixed on one end hole of the swing arm 16 by the fourth equal-height screw 28. The other end of the swing arm 16 is fixed on the output shaft of the speed reducer 17; a servo motor 20 is installed on the input shaft of the speed reducer 17.

[0033] During operation, the servo motor 20 is used as the power source to drive the speed reducer 17. After the speed reducer 17 decelerates, it drives the swing arm 16 fixed on the output shaft to rotate. The swing arm 16 drives the first connecting rod 15, the second connecting rod 12 connected to the first connecting rod 15, and the swing arm 19 fixed at one end of the second connecting rod 12 to perform reciprocating swings. The wok bracket 7 at the other end of the main shaft 22 connected to the swing arm 19 drives the wok 8 to perform the wok tossing motion, achieving the effect of wok tossing and stir-frying. As Figure 4 and Figure 8 shown, the wok 8 rotates along the axis of the main shaft 22 from the lower dead point to the upper dead point. The vegetables 29 in the wok are thrown by centrifugal force to the back of the bottom of the wok 8, and then move along the back wall of the wok 8 to the upper dead point of the wok tossing motion. Since the wok 8 rotates radially along the main shaft 22, the vegetables 29 in the wok 8 also have radial inertia. After reaching the upper dead point of the wok tossing, the wok 8 returns, and the vegetables 29 in the wok 8 naturally fall to the front bottom of the wok 8 as the inertia disappears.

[0034] During the verification test, when using the driving mechanism of the present invention to install a traditional round wok for wok tossing and stir-frying, since the traditional round wok is a semi-spherical body, the vegetables in the wok will fly out directly along the back due to centrifugal force and cannot return to the front of the wok.

[0035] As Figure 5 and Figure 6As shown, a push-pull electromagnet 10 is installed below the output shaft of the speed reducer 17. The push plate of the push-pull electromagnet 10 is connected to the pot blocking block 14. There is a hole in the middle of the pot blocking block 14. The first equal-height screw 24 passes through the hole in the middle of the pot blocking block 14 to fix the pot blocking block 14 to the support plate of the frame 1, so that the pot blocking block 14 can perform a seesaw-like movement. The upper part of the pot blocking block 14 is in a 7-shaped form. The 7-shaped upper part of the pot blocking block 14 faces the output shaft of the speed reducer 17. When the push-pull electromagnet 10 is attracted, it can push the pot blocking block 14 to make the 7-shaped upper part of the pot blocking block 14 move forward to block the movement path of the first connecting rod 15, so that the second connecting rod 12 is perpendicular to the first connecting rod 15 due to inertia, resulting in the total length of the first connecting rod 15 and the second connecting rod 12 becoming shorter, causing the frying pan 8 to flip forward until the position of the pot mouth is lower than that of the pot bottom, meeting the conditions for discharging the pot.

[0036] In the prototype verification test of the present invention, for the same dish, Chef A operating the present invention and Chef B holding a traditional frying pan start cooking at the same time. Chef B needs to cooperate with both hands when cooking, constantly tossing and stir-frying the pot, then stopping to add seasonings and then stir-frying again; while Chef A starts the automatic pot-tossing and stir-frying after pressing the start button. When Chef B is working hard to toss and stir-fry the pot, Chef A has already prepared the seasonings. After Chef A adds the seasonings and sets the discharging time, he goes to prepare the dinner plate or the next side dish; because there are requirements for the addition time of various seasonings, the chef has to stop several times to add seasonings and is not idle for a moment before discharging a dish; since the dishes cooked by Chef A are basically without pauses, the discharging time of the same dish is more than ten seconds to dozens of seconds faster than that of Chef B, and it is also easier.

[0037] Due to the simple structure, reliable performance, low cost and cheap selling price of the present invention, the extra daily turnover given to the user can enable the user to recover the cost of purchasing the cooking machine within 2 months, and it is also easily acceptable to small catering business owners and is easy to promote.

[0038] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are all included within the protection scope of the present invention.

Claims

1. A stir-frying machine, comprising a frying pan (8), wherein the frying pan (8) is connected to a driving mechanism, characterized in that The mouth and bottom of the wok (8) are different-shaped circles. The bottom of the wok (8) is an oval flat bottom. The wall of the wok (8) slopes outward relative to the bottom. And the wall of the front part of the wok (8) slopes outward relative to the bottom at an angle greater than the walls of the wok (8) in other directions. The angle between the wall of the front part of the wok (8) and the horizontal plane is 40 - 60 degrees, and the angle between the walls of the wok (8) in other directions and the horizontal plane is 70 - 80 degrees. The cooking machine includes a frame (1). A servo motor (20) is arranged on the frame (1). The output shaft of the servo motor (20) is connected to one end of a swing arm (16) through a speed reducer (17). The swing arm (16) can rotate around the output shaft of the speed reducer (17). The other end of the swing arm (16) is hinged to one end of a first connecting rod (15). The other end of the first connecting rod (15) is hinged to one end of a second connecting rod (12). The other end of the second connecting rod (12) is hinged to one end of a swing arm (19). The other end of the swing arm (19) is connected to one end of a main shaft (22) on the frame (1). The other end of the main shaft (22) is connected to the wok (8). When the swing arm (16) rotates, it drives the swing arm (19) to make a reciprocating swing through the first connecting rod (15) and the second connecting rod (12). The swing arm (19) drives the wok (8) to make a reciprocating forward throwing and frying motion through the main shaft (22). A push-pull electromagnet (10) is installed below the output shaft of the speed reducer (17). The push plate of the push-pull electromagnet (10) is connected to a pan-out blocking block (14). There is a hole in the middle of the pan-out blocking block (14). A first equal-height screw (24) passes through the hole in the middle of the pan-out blocking block (14) to fix the pan-out blocking block (14) to the support plate of the frame (1), so that the pan-out blocking block (14) can make a seesaw-like motion. The upper part of the pan-out blocking block (14) is in a shape of '7'. The upper part of the '7'-shaped pan-out blocking block (14) faces the output shaft of the speed reducer (17). When the push-pull electromagnet (10) is attracted, it can push the pan-out blocking block (14) to make the upper part of the '7'-shaped pan-out blocking block (14) move forward to block the movement path of the first connecting rod (15), making the second connecting rod (12) perpendicular to the first connecting rod (15), and making the wok (8) flip forward until the position of the mouth of the wok is lower than that of the bottom. There is a boss in the middle of the second connecting rod (12). The boss supports one end of the first connecting rod (15) and one leg of a torsion spring (13). The other leg of the torsion spring (13) is supported in a small hole in the middle of the first connecting rod (15). The torsion spring (13) uses torsion to keep the first connecting rod (15) and the second connecting rod (12) in a parallel state.

2. The cooking machine according to claim 1, characterized in that The other end of the main shaft is equipped with a wok bracket (7), and the wok (8) is installed on the wok bracket (7).

3. A stir-frying machine according to claim 1, characterized in that A position detection switch (11) for detecting the attitude of the wok (8) is installed below the swing arm (19).

4. A cooking machine according to claim 1, characterized in that A sheet metal housing (2) is arranged outside the frame (1). A waterproof power switch (3), a gas adjustment knob (4), a gas regulating valve (18), an ignition button (5), and an operation panel (6) are arranged on the sheet metal housing (2). A burner (9) is installed in the middle of the frame (1).

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