TWI802756B - Steam heating cooking appliance - Google Patents

Abstract

The application relates to a steam heating cooking appliance including a machine body and a pot, the machine body includes a machine base and a machine head, the pot is placed on the machine base, and a steam generator is arranged in the machine base, the machine head is provided with a steam port configured to join with the pot, the steam generator communicates with the steam port through a hose, and the machine head is pivotally disposed on the machine body, and includes a first position joining with the pot to introduce steam and a second position separated from the pot. The application optimizes the opening and closing mode of the machine head, so as to provide larger picking-and-placing space and degree of freedom of the pan, and improve the picking-and-placing experience of the pan.

Description

A steam heating cooking appliance

The invention relates to the field of kitchen appliances, in particular to steam heating cooking utensils.

As one of the most commonly used kitchen cooking utensils at present, the electric rice cooker can be used not only for cooking, but also for cooking porridge and soup to meet the needs of people's fast-paced work and life. Known household electric rice cookers mainly have two heating methods: one is to heat the inner tank through a heating plate or an electromagnetic wire plate, which is prone to problems such as local high temperature and sticky pot, and cannot achieve true three-dimensional heating; the other is Steam heating, in contrast, has better heating uniformity and can solve the problems of traditional electric heating. Therefore, steam heating has gradually attracted the attention of the industry in recent years.

A steam rice cooker disclosed in the prior art, in terms of product structure, subverts the structural design of the built-in pot of the traditional electric rice cooker, and adopts the external structure of the pot. The body as a heating platform forms an open space, and the pot for placing food is preferable. Put it on the ground in this open space, the pot is located outside the machine body and supported by the base at the bottom of the machine body, when cooking, the machine head and the pot are docked, the steam generator in the machine body generates steam and sends it to the machine head, and the machine head A steam port connected to the pot is provided, and the steam enters into the pot through the steam port to heat the ingredients. The docking of the machine head and the pot adopts the telescopic head docking. This docking method causes the structure of the body to be complicated, the body is particularly heavy, and it is inconvenient for the user to take and place the pot, causing inconvenience to the user.

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and propose a steam heating cooking utensil, which is convenient for users to take and place the pot.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solution: a steam heating cooking utensil, including a body and a pot, the body includes a body and a machine head, the pot is placed on the body, and the inside of the body is set There is a steam generator, the machine head is provided with a steam port docked with the pot, the steam generator communicates with the steam port through a hose, and the machine head is reversibly arranged on the body, which includes docking with the pot to A first station for introducing steam and a second station separate from the pot.

Preferably, the angle at which the second station turns over relative to the first station is 10°-60°.

Preferably, the body is provided with a rotating shaft, and the machine head can be turned around the rotating shaft to achieve docking with or separating from the cooking utensils, and the hose is located under the rotating shaft.

Preferably, a supporting part is provided on the body, and the supporting part supports the machine head when the machine head is docked with the first station of the pot.

Preferably, the fuselage includes a base and a column provided on one side of the base, and the support part protrudes from the side of the column toward the direction of the machine head to form a support for the bottom of the machine head.

Preferably, the machine head is connected to the machine body through a rotation limiter device, and the rotation limiter device limits the rotation of the machine head between the first station and the second station, and the rotation The limiter device is provided with a driving part and a stepping motor, and the stepping motor and the driving part are used to drive the machine head to turn up from the first station to the second station, and allow the The machine head is manually turned over from the second station to the first station.

Preferably, the rotation limiter device has a locked state and an unlocked state, the locked state is used to lock the machine head at the first station, and the driving member drives the The machine head is turned upwards from the first station to the second station.

Preferably, the pot cover is closed to the pot body to form a cooking cavity, and the pot cover is provided with a steam inlet hole, and when the machine head is docked with the pot, steam is introduced from the steam inlet hole to the cooking cavity , the steam inlet hole is provided with a steam guide pipe.

Preferably, the steam guiding pipe has a connecting portion close to one end of the pot cover and an air outlet portion away from one end of the pot cover, the air outlet portion is provided with an air outlet, and the diameter of the gas outlet portion is smaller than the diameter of the connecting portion .

Preferably, the pot further includes a steaming rack, and the steaming rack is placed in the cooking cavity, The steam guiding pipe communicates with the steam inlet hole and penetrates the steam rack from top to bottom, and is used to guide steam into the space below the steam rack.

Preferably, the steam rack is provided with a through hole, and the steam guiding pipe extends to the space below the steam rack through the through hole.

Preferably, the steam guiding pipe has a connecting portion close to one end of the pot cover and an air outlet portion away from the end of the pot cover, the pipe diameter of the air outlet portion is smaller than the pipe diameter of the connecting portion, and an air outlet is provided on the air outlet portion.

Preferably, the bottom of the gas outlet of the steam guiding pipe is closed, and the gas outlet is arranged on the side wall of the gas outlet.

Beneficial effects of the present invention:

1. The steam heating cooking appliance proposed by the present invention, the machine head is reversibly set on the body, which includes a first station docked with the pot to introduce steam and a second station separated from the pot. Compared with the retractable machine head, the parts inside the machine head are smaller, the thickness of the machine head is smaller, and the overall height of the cooking utensil can be effectively reduced, making the whole cooking utensil more delicate and compact. When the machine head is turned over to the second station separated from the pot, it is convenient to put the pot in before cooking and take out the pot after cooking, and the taking and putting of the pot is not easy to interfere with the machine head.

2. The turning angle of the docking of the machine head and the pot and the separation of the machine head and the pot are controlled at 10°~60°. On the one hand, the turning angle of the machine head is small, and the bending angle of the hose at the turning point of the machine head is small. The wear of the hose is small, and the shear force generated by the hose itself is small because of its own deformation. When the reaction force of the shear force acts on the joints at both ends of the hose, it is not easy to disengage the hose joints; The angle between the head at the second station and the first station determines the height that the open space can increase after the head is opened. If the angle between the head at the second station and the first station is less than 10° , the rotation stroke of the machine head is too small to give full play to the unique space advantages of the rotary machine head; if the angle between the machine head at the second station and the first station is greater than 60°, the use environment needs to be above the cooking utensils. A large space is reserved to avoid the machine head in the open state, which causes limitations in the use environment, and the excessive rotation stroke also makes the manual operation of the user more laborious. Therefore, the present invention puts the machine head at the second station. The included angle with the first station is limited within the range of 10°~60°, which facilitates the opening and closing operation of the machine cover while obtaining a good user experience.

3. The machine head and the fuselage are connected by a rotation limiter device, which limits the rotation of the machine head between the first station and the second station, and the rotation limiter The element device is provided with a driving part and a stepping motor, and the stepping motor and the driving part are used to drive the machine head to turn up from the first station to the second station, and allow the machine head to by the said The second station is manually turned over to the first station. The rotation limiter device limits the machine head to switch between the first station that docks with the pot and the second station that is separated from the pot, that is to say, within the range limited by the rotation limiter device, the machine head can Rotate, open and close relative to the fuselage in the height direction of the fuselage. Since an open space is formed between the head and the base, the height of the open space is determined by the distance between the head and the base. When the head is turned from the first station to the second During the second station, the distance between the machine head (the position where the pot is docked on the machine head) and the base increases, that is, the height of the open space is increased. The telescopic machine head in the prior art only performs telescopic movement in a fixed open space, and cannot bring about changes in the height of the open space, so the pick-and-place space it provides is also very limited. In comparison, the present invention proposes The rotating machine head can change the height of the open space, thereby providing a larger space and freedom for picking and placing pots, making it more convenient for users to pick and place pots. For example: for cooking utensils with external cooking utensils, the pan is basically taken and placed on the base of the body in a translational manner. If the height of the open space is too small, it is easy to touch the head or the base when taking and placing the pan. This may cause the pot to be tilted or overturned. For this reason, the user needs to hold the pot more carefully, and the user experience is not good; but in the present invention, when the machine head is turned from the first station to the second station , The height of the open space is increased, so that there is more space between the base and the machine head to avoid the pot. It is not easy to touch the base or the machine head when picking and placing the pot, and the user can get a better pick-and-place experience. In addition, the rotation limiter device limits the rotation range of the machine head to prevent the machine head from being damaged due to overturning, especially the first station of the machine head, which can prevent the machine head from Excessive pressure on the pot by the head will cause damage to the joint between the two.

4. The fuselage is provided with a supporting part, and the supporting part supports the machine head when the machine head is docked with the first station of the cookware. The machine head is rotatably connected to the body to form a structure similar to a cantilever beam or a lever. When the machine head is docked with the pot, it is usually kept at a level or close to the level. The rotational connection between the machine head and the body needs sufficient strength to resist The bending moment generated by the action of gravity, so as to maintain the above state, but the rotating connection between the nose and the fuselage is prone to deformation due to the influence of bending moment for a long time, especially when the nose is also pressed by external force, which will further aggravate the machine. The deformation of the rotating connection between the head and the body may cause damage to the rotating connection between the head and the body, and the head cannot be stabilized at the position of the docking pot, which will affect the normal use of the product. For this reason, the present invention adds a supporting part on the fuselage, and in the state where the machine head is docked with the pot, the support part is used to support the machine head, so as to reduce or eliminate the pressure on the rotating joint between the machine head and the body due to the weight of the machine head and the pressure of the external force. The load ensures the reliability and service life of this part, and due to the support of the support part, the machine head can be more stably kept in the The position of the docking pot is conducive to improving the docking stability of the machine head and the pot.

5. Use the steam guiding tube to guide the steam to the bottom of the steaming rack. The steam that the steam guiding tube leads into the cooking cavity carries a lot of heat energy and moves from the bottom of the steaming rack to the upper side of the steaming rack, and steams the food placed on the steaming rack. Because water vapor is generated outside the cooking cavity, there is no need to heat water in the cooking cavity to generate water vapor, so it can effectively prevent the water boiling under the steaming rack from contacting the food through the steaming rack to soak the lower part of the food during the steaming process, ensuring that the food At the same time, the steaming rack can be placed near the bottom of the cooking cavity to increase the space above the steaming rack, so that a large amount of food can be placed on the steaming rack, and large-volume food can also be placed on the steaming rack. Steaming of larger foods.

These characteristics and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings.

Below in conjunction with accompanying drawing, the present invention will be further described:

100: fuselage

110: nose

111: Steam outlet

112: Groove

120: base

130: water tank

140: water pump

150: steam generator

160: support part

161: vertical support surface

170: column

180: decorative board

200: Pot

210: Pot cover

211: steam inlet

220: pot body

230: steam guide pipe

231: connection part

232: Outlet part

233: Air outlet

234: Transition Department

235: Bootstrap structure

236: Avoidance structure

237: Anti-reverse suction hole

240: steam rack

241: Through hole

300: limit plate

310: limit hole

311: limit section

312: guide section

313: Horizontal segment

314: vertical segment

400: fixed bracket

410: limit shaft

411: flat shaft

412: Horizontal chute

420: The first lever

430: the first torsion spring

440: the first dial

450: stepper motor

460: micro switch

470: Second torsion spring

480:Second lever

490: second dial

500: shaft

600: extension spring

700: Hose

Fig. 1 is a schematic structural view of a steam heating cooking appliance in an embodiment of the present invention; Fig. 2 is a schematic diagram of taking and placing a pot of a steam heating cooking appliance in an embodiment of the present invention; Fig. 3 is a schematic view of a steam heating cooking appliance in an embodiment of the present invention Figure 4 is a schematic diagram of the assembly of the rotary limiter device and the machine head in an embodiment of the present invention; Figure 5 is a partial exploded schematic view of the rotary limiter device in an embodiment of the present invention; Figure 6 is a schematic view of the rotation of the present invention The first schematic diagram of the state of the rotation limiter device when the machine head is at the first station in the embodiment; FIG. 7 is the second schematic diagram of the state of the rotation limiter device when the machine head is at the first station in one embodiment of the present invention; Fig. 8 is a schematic diagram of the state of the rotation limiter device when the machine head is in the second position in an embodiment of the present invention; Fig. 9 is a second schematic view of the state of the rotation limiter device when the machine head is at the second station in an embodiment of the present invention; Fig. 10 is a schematic diagram of the assembly of the rotation limiter device and the machine head in an embodiment of the present invention; Fig. 11 is a schematic diagram of partial explosion of the rotation limiter device in an embodiment of the present invention; FIG. 12 is a schematic diagram of the state of the rotation limiter device when the machine head is in the first station in an embodiment of the invention; FIG. 13 is the present invention Schematic diagram 2 of the state of the rotation limiter device when the machine head is at the first station in an embodiment of the invention; FIG. 14 is a schematic diagram of the state of the rotation limiter device when the machine head is at the second station in an embodiment of the present invention 1; Figure 15 is a schematic diagram of the state of the rotation limiter device when the machine head is at the second station in an embodiment of the present invention; Figure 16 is a schematic diagram of the installation of the hose in an overturned state of the machine head in an embodiment of the present invention .

Fig. 17 is a schematic cross-sectional view of the steam heating cooking appliance when the machine head is at the second station according to an embodiment of the present invention.

Fig. 18 is a schematic diagram of a decorative board in an embodiment of the present invention.

Fig. 19 is a cross-sectional view of the cooker of the present invention.

Fig. 20 is an enlarged view of part A in Fig. 19 .

Fig. 21 is a perspective view of a steam guiding pipe in an embodiment of the present invention.

Fig. 22 is another structural view of the steam guiding pipe in an embodiment of the present invention.

Fig. 23 is a schematic diagram of steam injection when the steam guiding pipe is in operation in an embodiment of the present invention.

Fig. 24 is a schematic diagram of an embodiment of the present invention - a pot with a steaming rack installed.

Figure 25 is a top view of the steaming rack.

Fig. 26 is a sectional view of A-A in Fig. 25 .

The present invention proposes a steam heating cooking appliance, which includes a body and a pot. The body includes a body and a machine head. The pot is placed on the body. There is a steam port docked with the pot, the steam generator communicates with the steam port through a hose, and the machine head is reversibly set on the body, which includes a first station docked with the pot to introduce steam and connected with the The second station for the separation of pots and utensils. The rotary machine head design proposed by the present invention is convenient for the user to pick and place the pot. The technical solutions of the present invention will be described below in conjunction with specific embodiments.

Embodiment one

Referring to Figures 1-3, the steam heating cooking appliance proposed in the first embodiment of the present invention includes a body and a pot 200, the body includes a body 100 and a head 110, the head 110 is reversibly set on the body 100, The upper part of the fuselage 100 is provided with a machine head 110, the lower part of the fuselage 100 includes a base 120, the pot 200 is placed on the base 120, an open space for accommodating the pot 200 is formed between the machine head 110 and the base 120, the machine head 110 and the body 100 They are connected by a rotation limiter device, and the rotation limiter device limits the turning and switching of the machine head 110 between the first station that docks with the pot 200 and the second station that is separated from the pot 200 .

Specifically: the inside of the fuselage 100 of this embodiment is provided with a steam generator 150 (such as: a water storage boiler, an instant boiler, etc.) and a water pump 140, and a water tank 130 is set on one side of the fuselage 100, and the water pump 140 works to turn the water tank The water in 130 is pumped into the steam generator 150 , the machine head 110 is provided with a steam outlet 111 , and the steam outlet 111 communicates with the steam generator 150 through a hose 700 . The pot 200 in this embodiment includes a pot body 220 and a pot cover 210. The pot cover 210 is closed to the pot body to form a cooking cavity. The pot 200 is placed on the base 120 in a state where the pot cover 210 covers the pot body 220. When the cooking utensil 200 is taken out at the end of cooking, the state of the pot cover 210 covering the pot body 220 is still maintained, which can reduce the loss of heat, so that the pot utensil 200 can maintain a longer heat preservation time after leaving the fuselage 100; the pot cover 210 The steam inlet 211 is set on the top of the machine head 110. The above-mentioned docking of the machine head 110 with the pot 200 means that the steam outlet 111 on the machine head 110 seals the steam inlet hole 211 on the docking pot cover 210. In actual operation, the steam generator 150 heats the water Steam is generated, and the steam is passed into the pot 200 through the steam output port 111 and the steam inlet hole 211 for heating food.

The open space refers to the open space defined between the machine head 110 and the base 120. There is no limit in the horizontal direction except the fuselage 100 itself. The distance between the machine head 110 and the base 120 determines the height of the open space. Therefore, the pot 200 is basically taken and placed on the base 120 of the fuselage 100 in a translational manner. If the height of the open space is too small, it is easy to touch the head 110 or the base 120 when the pot 200 is taken and placed, which may cause the pot 200 to tilt Or overturn, for this reason the user needs to hold the pot 200 more carefully. If the open space is enlarged by increasing the height of the machine head 110, although the problem of picking and placing the pot can be solved, some open space is wasted. But also increased the height of the body.

The embodiment of the present invention proposes the concept of a rotating machine head, through the rotational opening and closing movement of the machine head 110 in the height direction of the fuselage 100, the height of the open space is changed, that is, as mentioned above: the machine head 110 is at the first position of the docking pot 200 Turn over and switch between the first station and the second station separated from the pot 200 . When picking and placing the pot 200, the head 110 is turned from the first station to the second station, and the distance between the head 110 (the position where the pot 200 is docked on the head 110) and the base 120 increases, that is, increases The height of the open space is increased, thereby providing a larger space and freedom of access to the pot 200, and it is more convenient for users to pick and place the pot 200; when cooking, the machine head 110 is turned from the second station to the first station And the pot 200 is docked, so that the pot 200 is convenient to take and place, and the open space will not be wasted.

Referring to Fig. 3, in the embodiment of the present invention, the rotation limiter device limits the turning angle of the machine head 110, so that the machine head 110 can only be turned over and switched between the first station and the second station, preventing the machine head 110 from overturning and Cause damage, especially to limit the first station of the machine head 110, on the basis of realizing the docking of the machine head 110 and the pot 200, it can prevent the machine head 110 from over-pressing the pot 200 and causing damage to the docking part of the two. Preferably: in the embodiment of the present invention, the angle α between the machine head 110 and the horizontal plane when it is in the second station is defined as 10°~60°. Then the angle α between the machine head 110 and the horizontal plane at the second station is the turning angle of the machine head 110 limited by the rotation limiter device, but in actual products, due to factors such as part processing errors and assembly errors, the first station The machine head 110 has a certain amount of floating up and down relative to its level state. Therefore, the turning angle of the machine head 110 limited by the rotation limiter device will not be smaller than the angle α between the machine head 110 and the horizontal plane when the machine head 110 is in the second station.

According to the scheme of the embodiment of the present invention, it can be understood that: the angle between the head 110 and the horizontal plane when the head 110 is at the second station determines the height that the open space can increase after the head 110 is opened, if the head 110 is at the second station The angle α with the horizontal plane is less than 10°, and the nose is 110 The rotation stroke is too small, which not only increases the design difficulty of the rotation limiter device, but also cannot give full play to the unique space advantages of the rotary head 110; if the angle α between the head 110 and the horizontal plane is greater than 60° at the second station , in the use environment, it is necessary to reserve a large space above the cooking utensils to avoid the machine head 110 in the open state, resulting in limitations in the use environment, and the excessive rotation stroke also makes the manual operation of the user more laborious; in addition, the machine The steam generator 150 in the body 100 delivers the steam to the machine head 110 through the hose 700, and the machine head 110 passes the steam into the pot 200, when the angle between the first station and the second station is less than 10° When the turning angle of the machine head 110 is too small, it is difficult to install the pot 200 in place; when the angle between the first station and the second station is greater than 60°, the turning angle of the machine head 110 is relatively large, and the machine head 110 and the body 100 The bending angle of the flexible hose 700 at the overturned position is too large, which may easily cause damage to the flexible hose 700 , and may also easily cause the joints at both ends of the flexible hose 700 to be disconnected under force. Therefore, the embodiment of the present invention limits the angle α between the machine head 110 and the horizontal plane in the range of 10°~60° when the machine head 110 is in the second station, so as to obtain a good user experience and facilitate the opening and closing operation of the machine cover. According to actual product needs, The angle α between the machine head 110 and the horizontal plane when it is in the second station can be set to 15°, 20°, 25°, 30°, 35°, 60°, etc.

Further, in some solutions, a steam guide tube is provided on the machine head to introduce steam into the pot body. During the turning process of the machine head, the steam guide tube rotates with the machine head. At this time, when the turning angle of the machine head is small , such as less than 45°, the steam guide tube has not come out of the pot, and the pot cannot be taken out from the body. In this embodiment, the pot 200 includes a pot body and a pot cover. The pot cover is provided with a steam guide pipe, and the steam is introduced into the food through the steam guide pipe for release, so that the food can be fully contacted with the steam and heated. Since the steam guide tube is arranged on the pot cover, when the machine head 110 is turned over, the steam guide tube will not be turned over with the machine head 110, and when the machine head 110 is turned over within the range of 10°~60°, the pot 200 will not be affected from the machine body 110 to take out.

In this embodiment, referring to FIG. 16 , the body 100 is provided with a rotating shaft 500 , and the machine head 110 is disposed on the body and can be turned around the rotating shaft 500 to achieve docking with the pot 200 or separation from the pot 200 , the hose 700 is located below the rotating shaft 500 . The machine head 110 turns over around the rotating shaft 500 on the body to dock with the pot 200 or separate from the pot 200 . The hose 700 for conveying steam is arranged under the rotating shaft 500, and the bending point of the hose 700 is closer to the connecting line connecting the two ends of the hose 700. Small, the deformation range is smaller, the hose 700 is not easy to break or break at the bend, and has a long service life. Further, the bending deformation of the hose 700 produces elastic force, and this elastic force will react The joints used for both ends of the hose 700, that is, the joints between the hose 700 and the steam port and the joints between the hose 700 and the steam generator 150, cause the joints to be pulled outward, and the joints are pulled by the hose 700 itself for a long time, which will cause the hose to The 700 connector is loose and comes out, resulting in air leakage. Setting the hose 700 below the rotating shaft 500 reduces the bending range of the hose 700, which also reduces the pulling force on the hose 700 joint when the machine head 110 is turned over. , The hose 700 joint is not easy to loosen and disengage.

The rotation limiter device of the embodiment of the present invention is also provided with a driving member, which is used to drive the machine head 110 to turn upwards from the first station to the second station, and to allow the machine head 110 to be manually turned from the second station to the second station. One station. The machine head 110 is turned up from the first station to the second station to realize the opening of the machine head 110, and the machine head 110 is turned down from the second station to the first station to realize the closure of the machine head 110, and the machine head 110 is opened by the drive Provides power, saves user operations, and can avoid the problem of steam scalding that may exist when the user manually opens the machine head 110, and the closing of the machine head 110 is realized by the user through manual operations such as pressing the machine head 110, and the cooking appliance can save the need to provide the machine head 110 With the closed power part, the user can experience the steam heating cooking utensils outside the pot in a way similar to the opening and closing of the traditional rice cooker.

A preferred implementation of the rotation limiter device in the embodiment of the present invention is given below: with reference to FIGS. Fixed bracket 400, fixed bracket 400 is provided with limit shaft 410, limit plate 300 is provided with limit hole 310, limit hole 310 has first limit end and second limit end, limit shaft 410 moves to the first When the limit end defines the first station and can be locked at the first limit end, when the limit shaft 410 moves to the second limit end, it defines the second station. Specifically: machine head 110 comprises machine head upper cover 112 and machine head lower cover 113, and one end of stopper plate 300 is fixedly installed on the machine head lower cover 113, and the other end of stopper plate 300 is provided with arc-shaped stopper hole 310, limit The positioning hole 310 includes a guide section 312 of equal width and a limit section 311 wider than the guide section 312. The upper end of the guide section 312 is the second limit end, and the limit section 311 is located at the lower end of the guide section 312 to form the first limit end. The upper end of the fixed support 400 is connected with the lower cover 113 of the machine head through the rotating shaft 500, the machine head 110 can rotate and open and close around the rotating shaft 500, the limit shaft 410 runs through the fixed support 400 horizontally, and the first dial is installed at one end of the limit shaft 410 Rod 420, the other end of the limit shaft 410 is a flat shaft part 411, the flat shaft part 411 passes through the above-mentioned limit hole 310 and is limited by a circlip, when the machine head 110 rotates and opens and closes around the rotating shaft 500, the flat shaft part 411 moves in the limiting hole 310, Thus, the rotation stroke of the handpiece 110 is limited.

In order to realize the locking of the above-mentioned limiting shaft 410 at the first limiting end, the fixed bracket 400 of this embodiment is provided with a first elastic locking member, the first elastic locking member is preferably a first torsion spring 430, one end of the first torsion spring 430 Positioned on the fixed bracket 400, the other end is positioned on the first lever 420 or the limit shaft 410, the first lever 420 and the limit shaft 410 rotate in conjunction, when the limit shaft 410 or the first lever 420 is driven by external force to rotate It can drive the first torsion spring 430 to twist and store force, and when the first torsion spring 430 releases the elastic force, it can also drive the limit shaft 410 to reverse. The width of the guide section 312 of the stopper hole 310 is larger than the thickness of the flat shaft part 411 but smaller than the width of the flat shaft part 411. When the flat shaft part 411 moves to the stopper section 311, the first torsion spring 430 releases the elastic force to drive the stopper shaft 410 to reverse , the flat shaft part 411 cannot enter the guide section 312 after rotating at a certain angle, and the stopper shaft 410 is locked in the stopper hole 310 and the stopper section 311 cannot move, and accordingly, the machine head 110 is locked in the first station, that is, The status is shown in Figure 6 and 7.

In order to realize the above-mentioned unlocking of the limiting shaft 410 at the first limiting end, the fixed bracket 400 is provided with a first unlocking member controlled by an electric element, and the first unlocking member drives the limiting shaft 410 to rotate through the first lever 420 to realize unlocking. Ground: the electric element is the stepper motor 450 installed on the fixed bracket 400, the rotation accuracy of the stepper motor 450 is high, and the first unlocking part is the first dial 440 installed on the output shaft of the stepper motor 450; When the head is 110, the stepper motor 450 drives the first dial 440 to rotate, and the first dial 440 moves the above-mentioned first lever 420 to rotate the limit shaft 410. When the flat shaft part 411 rotates at a certain angle, it can enter the guide section 312 , that is, the locking of the limit shaft 410 is released. Since the rotation limiter device is also provided with a driving member, when the lock of the limit shaft 410 is released, the driving member provides power to drive the machine head 110 to turn upwards to the second station. That is, the state shown in Figures 8 and 9.

Preferably: with reference to Figures 6 and 8, the driving part of this embodiment is a tension spring 600, one end of the tension spring 600 is connected to the limit plate 300, and the other end is connected to the fixed bracket 400 or other parts of the body, the machine head 110 is controlled by the second working The process of manually turning over to the first station makes the tension spring 600 stretch and accumulate force. Although the machine head 110 can be locked at the first station, the machine head 110 can be kept moving to the second station under the action of the tension spring 600. The tendency of rotation, once the machine head 110 is unlocked, the elastic force released by the tension spring 600 can drive the machine head 110 to turn upwards from the first station to the second station, and the user can feel the driving part when pressing the machine head 110. The blocking force, so as to obtain a good operating feel. In other embodiments, other elastic elements such as torsion springs can also be used to replace the extension springs. The torsion springs are set on the rotating shaft, and one end is used to position the machine head and the other end is used to position the body. This can also be achieved. purpose of the example.

Based on the above schemes, it can be seen that the rotation limiter device in the embodiment of the present invention has a locked state and an unlocked state, the locked state is used to lock the machine head 110 at the first station, and the driving member drives the machine head 110 in the unlocked state by the first position. The station is flipped up to the second station. The advantage of this design is that during the cooking process, it ensures the reliable docking of the machine head 110 and the pot 200 to achieve a stable output of steam, and prevents the machine head 110 from swinging sharply and causing the docking part to appear. Problems such as air leakage; not only that, but for the rotary head, the setting of the locking state enables the user to automatically lock the head when manually pressing the head to the first position, which helps the user to judge the closed position of the head , to avoid repeated operations caused by the user not being sure about the closed position of the machine head, and enhance the user experience.

In order to facilitate the unlocking control of the rotation limiter device, this embodiment proposes the following scheme:

1. The body has a control module and a trigger module. The trigger module is a physical button on the body 100, such as a mechanical switch, button, touch-sensitive button, etc. After cooking, the user operates the physical button, and the control module receives After the trigger signal of the physical button, the stepper motor 450 is controlled to start, and the unlocking of the machine head 110 is completed; or the trigger module is set as a remote control switch, and the user can realize remote control through an infrared remote control; the trigger module can also be set as a wireless The communication module uses mobile devices (such as mobile phones, tablet computers, smart watches/bracelets, etc.) to push power-on information to achieve remote control. This solution allows the user to independently choose whether to open the handpiece 110 according to the actual situation, and has a high degree of flexibility in use. It can be understood that the trigger module can be arranged on the fuselage, nose or base.

2. The control module of the body is set to start the unlocking state of the rotary limiter device directly or after a delay at the end of the cooking program, that is, at the end of the cooking program, the control module automatically sends a start command to control the stepper motor according to the program setting 450 starts, completes the unlocking of the machine head 110, this solution makes the product more intelligent, the physical buttons for corresponding functions can be omitted on the body, and the external shape of the body is more concise and beautiful. If the unlocked state of the delay start rotation limiter device is adopted, the pot has a certain natural cooling time after cooking, reducing the risk of steam scald.

Referring to Fig. 9, a microswitch 460 is also provided on the fixed bracket 400 of the rotary limiter device, and after the stepper motor 450 drives the first dial 440 to rotate to unlock the limiter shaft 410, the stepper motor 450 will continue to work until The first dial 440 touches the micro switch 460 , and the control module stops the stepping motor 450 according to the trigger signal of the micro switch 460 . this way you can avoid To prevent the first dial 440 from interfering with the rotation of the first lever 420, when the machine head 110 is manually flipped from the second station to the first station, the rotation angle of the limit shaft 410 can be reliably locked in the limit position. In the limiting section 311 of the hole 310 .

To sum up, the operating principle of the steam heating cooking appliance according to the embodiment of the present invention is as follows: Referring to Figures 6 and 7, the machine head 110 is at the first position at this time, and the limit shaft 410 is locked in the first limit position of the limit hole 310 At the end, the driving part is in the power storage state, the machine head 110 is docked with the pot 200, the cooking utensil can start the cooking program, or the cooking program ends, and wait for the machine head 110 to open.

When the stepper motor 450 starts to work after receiving the starting command, the stepper motor 450 drives the first dial 440 to rotate, and the first dial 440 moves the first lever 420 to rotate the limit shaft 410 and drive the first torsion spring at the same time 430 is twisted to store force, and when the flat shaft part 411 of the limit shaft 410 rotates at a certain angle, it can enter the guide section 312. At this time, the power provided by the driving part drives the machine head 110 to turn upwards from the first station to the second station. , the flat shaft portion 411 moves to the second limit end of the limit hole 310 along the guide section 312 of the limit element hole 310, as shown in Figures 8 and 9; The distance between the position of the pot 200) and the base is increased, which increases the height of the open space, thereby providing a larger pot pick-and-place space and freedom of pick-and-place, which facilitates pick-and-place pots.

When the machine head 110 is closed again, the user manually operates such as pressing the machine head 110 to make the machine head 110 turn down from the second station to the first station, and the driving part is stretched to the power storage state. When the primary shaft 410 enters the limit section 311 of the limit hole 310, the first torsion spring 430 releases the elastic force to drive the limit shaft 410 to rotate, and the flat shaft part 411 of the limit shaft 410 cannot enter the guide section after rotating a certain angle, and the limit The primary shaft 410 is locked in the limiting section 311 of the limiting hole 310 and cannot move, correspondingly, the machine head 110 is locked at the first station, waiting for the next time the machine head is opened.

Embodiment two

Referring to Fig. 10 and Fig. 11, different from Embodiment 1, the solution of this embodiment changes the locking and unlocking mode of the limit shaft 410, specifically: the rotation limiter device includes a limiter plate 300 and a fixed bracket 400, one end of the limiting plate 300 is fixedly installed on the machine head lower cover 113, the other end of the limiting plate 300 is provided with a limiting hole 310, the limiting hole 310 includes a vertical section 314 and a horizontal section extending horizontally from the bottom of the vertical section 314 313, the upper end of the vertical section 314 is the second limiting end, and the transverse section 313 forms the first limiting end. The limiter plate 300 is fixedly provided with a rotating shaft 500 through integral injection molding or other methods, and the two ends of the rotating shaft 500 are rotatably limited on the lower cover 113 of the machine head, and the machine head 110 can rotate around the rotating shaft 500 to open and close. One end of the limiting shaft 410 is installed on the transverse chute 412 of the fixed bracket 400, and can slide along the transverse chute 412. The other end of the limiting shaft 410 extends into the limiting hole 310. When the machine head 110 rotates around the rotating shaft 500 During the opening and closing movement, the limit shaft 410 moves in the limit hole 310 to limit the rotation stroke of the machine head 110 .

In order to realize the above-mentioned locking of the limiting shaft 410 at the first limiting end, the fixing bracket 400 of this embodiment is provided with a second elastic locking member, the second elastic locking member is preferably a second torsion spring 470, and the limiting shaft 410 is connected to the fixed A second driving rod 480 is connected between the brackets 400. One end of the second torsion spring 470 is positioned on the fixing bracket 400, and the other end is positioned on the second driving rod 480. The second driving rod 480 can be wound around the connection on the fixing bracket 400. The point swings back and forth, thereby driving the limiting shaft 410 to slide back and forth along the transverse slide groove 412 . When the limiting shaft 410 moves to the bottom of the vertical section 314 of the limiting hole 310, the second torsion spring 470 releases the elastic force to drive the second driving lever 480 to swing, and the second driving lever 480 drives the limiting shaft 410 to move to the horizontal section 313 Inside, since the limit shaft 410 cannot move up and down in the transverse section 313, correspondingly, the machine head 110 can be locked in the first position, which is the state shown in FIGS. 12 and 13 .

In order to realize the above-mentioned unlocking of the limiting shaft 410 at the first limiting end, the fixed bracket 400 is provided with a second unlocking member controlled by an electric element, and the second unlocking member drives the limiting shaft 410 to reversely translate through the second lever 480 to realize unlocking , specifically: the electric element is a stepper motor 450 installed on the fixed bracket 400, and the second unlocking part is a second dial 490 installed on the output shaft of the stepper motor 450; when the machine head 110 needs to be unlocked, the stepper motor 450 drives the second dial 490 to rotate, and the second dial 490 drives the second lever 480 to swing back. The second lever 480 drives the limit shaft 410 to move in reverse to the vertical section 314, releasing the limit shaft 410 up and down. Movement limitation in the direction, since the rotation limiter device is also provided with a driving part, when the locking of the limit shaft 410 is released, the driving part provides power to drive the machine head 110 to turn upwards to the second station, that is, as shown in Figure 14, 15 shows the state.

In this embodiment, the setting method of the driving member and the unlocking control of the rotation limiter device can refer to the solution described in the first embodiment, and will not be described in detail.

Embodiment three

In this embodiment, referring to FIG. 2 and FIG. 17 , the body 100 is provided with a support portion 160 , and the support portion 160 supports the machine head 110 when the machine head 110 is docked with the pot 200 .

In this embodiment, the fuselage 100 includes a base 120 and a column 170 disposed on one side of the base 120 , and one end of the machine head 110 is rotatably connected to the upper part of the column 170 through a rotating shaft 500 .

The above-mentioned machine head 110 constitutes a structure similar to a cantilever beam or a lever. When the machine head 110 is docked with the pot 200, it is usually kept at a level or close to the level. strength to resist the bending moment of the machine head 110 due to the action of gravity, so as to maintain the above state, but the above-mentioned rotating shaft 500 and structural members are prone to deformation due to the bending moment for a long time, especially when the machine head 110 is also pressed by an external force This further exacerbates the deformation of the shaft 500 and the structural parts, which may cause damage to the shaft 500 and the structural parts, and the machine head 110 cannot be stabilized at the position of the docking pot 200, etc., affecting the normal use of the product.

In order to solve the above problems, please refer to Fig. 2 and Fig. 17. In this embodiment, a support part 160 is provided on the upper part of the column 170. The support part 160 protrudes from the side of the column 170 to the direction of the machine head 110. When the machine head 110 is docked with the pot 200 In this state, the bottom of the machine head 110 is supported by the support part 160, which reduces or eliminates the load on the rotating shaft 500 and structural parts due to the gravity of the machine head 110 and the pressing of external forces, ensuring the reliability and service life of the rotating shaft 500 and structural parts , and due to the supporting function of the support part 160 , the machine head 110 can be more stably kept at the position of docking with the pot 200 , which is beneficial to improve the docking stability of the machine head 110 and the pot 200 .

Preferably, a groove 112 for accommodating the support part 160 is provided at the bottom of the machine head 110 in the embodiment. When the machine head 110 is docked with the pot 200, the support part 160 is matched in the groove 112 at the bottom of the machine head 110. The support part 160 and the machine head 110 have an integrated visual effect, and at the same time avoid possible interference of the support part 160 on the pot 200 when the pot 200 is placed.

More preferably, when the machine head 110 is docked with the pot 200, the bottom surface of the machine head 110 is flush with the bottom surface of the support part 160 or forms a continuous transition surface, and the support part 160 and the machine head 110 are visually integrated. Wipe or touch the above parts There is no obvious concave-convex feeling, which enhances the user experience.

Preferably, the front end of the support part 160 forms a vertical support surface 161, and the vertical support surface 161 abuts against the machine head 110 to provide a support force. It can be seen from Fig. 17 that when the machine head 110 is docked with the pot 200, the side of the groove 112 is in contact with the vertical support surface 161 at the front end of the support part 160, thereby forming a support for the machine head 110 and preventing the machine head 110 from Press down further; When the side of groove 112 is against the vertical supporting surface 161 of supporting portion 160, the active force of the vertical supporting surface 161 of the machine head 110 and the reaction force of the vertical supporting surface 161 to the machine head 110 (i.e. support force) are in the horizontal or close to the horizontal direction, the support part 160 is basically not subject to vertical load, and in the horizontal direction, the support part 160 is shared by the column 170 of the body 100, so the support part 160 can be well maintained. strength without deformation. More preferably, when the machine head 110 is docked with the pot 200, a gap fit is formed between the upper surface of the support part 160 and the machine head 110, that is, a certain gap is formed between the bottom surface of the groove 112 and the upper surface of the support part 160, The machine head 110 has no vertical downward pressure on the support part 160 , which prevents the support part 160 from being deformed due to the vertical load, and reduces the strength requirements for the support part 160 .

In an embodiment of the present invention, the supporting part can also provide other supporting ways, for example: the upper surface of the supporting part and the vertical supporting surface jointly support the machine head, or only the upper surface of the supporting part supports the machine head.

Referring to FIG. 18 , in one embodiment of the present invention, the fuselage 100 is provided with a side-standing decorative plate 180 , and the support portion 160 is integrally formed on the decorative plate 180 , and the decorative plate 180 covers the front side of the column 170 in the height direction. , the upper end of the decorative plate 180 extends toward the direction of the machine head 110 to extend the support part 160, the support part 160 is seamlessly combined with the column 170, and the appearance performance is good.

Preferably, in the above embodiment, the connection between the bottom surface of the support part 160 and the side surface of the decorative panel 180 is a circular arc transition. The appearance effect of the side of the column 170 is enhanced, the cleaning dead angle at the root of the support part 160 is avoided, and stress concentration at the root of the support part 160 is also avoided.

Preferably, in the above embodiment, the wall thickness of the support part 160 is greater than the wall thickness of the decorative plate 180 to enhance the structural strength of the support part 160 so as to provide reliable support for the machine head 110 .

In one embodiment of the present invention, the supporting part 160 may be a separately formed component fixed to the column 170 .

Embodiment four

Referring to Fig. 19 to Fig. 23, in this embodiment, a steam guiding pipe 230 is provided on the pot cover. When the machine head is docked with the pot, steam is introduced from the steam inlet hole to the cooking cavity, and a steam guide pipe 230 is arranged on the steam inlet hole.

Preferably, the steam guide pipe 230 of this embodiment has a connecting portion 231 near one end of the pot cover 210 and an air outlet portion 232 away from the end of the pot cover 210, the air outlet portion 232 is provided with an air outlet 233, and the air outlet portion 232 The pipe diameter is smaller than the pipe diameter of the connecting portion 231 .

During cooking, the pot body 220 is placed on the body 10, and the pot cover 210 on the pot body 220 and the The pot body 220 is closed to form a cooking cavity. The steam generator 150 in the body 10 works to generate steam. The steam reaches the pot cover 210 through the steam pipeline and enters the steam guide pipe 230 through the steam inlet hole 211 on the pot cover 210, and finally The steam is introduced into the cooking cavity by the steam guiding pipe 230 to heat the food in the cooking cavity. In this embodiment, the steam guiding pipe 230 is preferably made of food-grade stainless steel. The steam guide pipe 230 needs to be inserted into the food in the cooking cavity, and it is made of food-grade stainless steel. On the one hand, there is no food safety problem. On the other hand, stainless steel has good heat resistance, corrosion resistance, and good structural strength. longer.

Specifically, during the cooking process, the steam guiding pipe 230 extends below the liquid level in the cooking cavity. Taking cooked rice as an example, when the steam is discharged from the steam guiding pipe 230, high-temperature bubbles are formed, and the high-temperature bubbles float up in the rice milk. During the floating process, they fully contact the rice milk and transfer heat to the rice milk, causing the rice milk to boil. In addition, during the floating process, driven by the air bubbles, the entire rice milk will form a tumbling action, so that the rice milk far away from the steam guiding pipe 230 can also be heated by contact with the high-temperature air bubbles through flow.

The essence of the process of steam exiting the steam guide pipe 230 is that the air pressure in the steam guide pipe 230 pushes the steam at the air outlet 233, so that the steam at the air outlet 233 overcomes the hydraulic pressure of the rice milk and enters into the rice milk. Therefore, the air pressure in the steam guiding pipe 230 determines the distance that the air bubbles escape from the air outlet 233. The greater the air pressure in the steam guiding pipe 230, the farther the air bubbles can reach the place farther away from the steam guiding pipe 230 before they begin to float. It should be pointed out that the distance that the bubbles leave the gas outlet 233 refers to the moving distance of the bubbles in the gas outlet direction of the gas outlet 233 , that is, the distance between the bubbles and the steam guiding pipe 230 .

In this embodiment, the diameter of the steam guide pipe 230 is very small compared to the inner diameter of the entire cooking cavity, the farther the distance of the air bubbles from the air outlet 233 is, the larger the trajectory of the air bubbles is, and the air bubbles push the rice milk The range of the rice milk is wider, the movement of the rice milk is larger, the more the rice milk flows, the better the rolling effect of the rice milk, so that the rice milk in all parts of the cooking cavity can flow and be heated by air bubbles. The rice milk in the cooking cavity is heated more evenly, the cooking time is shorter, and the cooked rice tastes better.

When the air pressure in the steam guiding pipe 230 is small, the steam will break away from the air outlet 233 to form bubbles and float up. Only the rice milk flowing near the steam guiding pipe 230 will be heated, and the rice milk far away from the steam guiding pipe 230 will be less heated, which leads to cooking The use time is greatly increased. In addition, the rice milk in the cooking chamber is heated unevenly, and the taste of the cooked rice is not ideal.

In this embodiment, the steam guide pipe 230 has a connecting portion 231 near one end of the pot cover 210 and an air outlet portion 232 away from the end of the pot cover 210. On the air outlet part 232 . The steam guide pipe 230 that steam enters from the steam inlet hole 211 on the pot cover 210 first enters the connecting part 231, then passes through the outlet part 232 and is discharged from the steam guide pipe 230 by the outlet port 233 on the outlet part 232. Since the pipe diameter of the outlet portion 232 is smaller than that of the connection portion 231 , when the steam enters the outlet portion 232 from the connection portion 231 , the flow velocity of the steam increases, and the steam pressure in the outlet portion 232 increases. In this way, the steam escapes from the air outlet 233 due to the greater pressure of the rear steam, forming the effect of steam jetting out, and the steam can dissociate to a region far away from the steam guide pipe 230 and then start to float, so that the rice milk The tumbling effect is better, the rice milk is heated more evenly, the cooking time of rice is shorter, and the taste of cooking rice is better.

In order to make the flow of steam from the connection part 231 to the gas outlet part 232 smoother, in this embodiment, a transition part 234 is provided between the connection part 231 and the gas outlet part 232, and the pipe diameter of the transition part 234 is from the connection part 231 to the gas outlet part. 232 direction gradually decreases. The existence of the transition part 234 makes the entire steam guide pipe 230 in the shape of a tapered dropper, that is, the pipe wall between the connecting part 231 and the gas outlet part 232 is a slanted wall, and when the steam flows from the connecting part 231 to the gas outlet part 232, there will be no friction. Large flow resistance ensures smooth flow, and the steam guide pipe 230 has a good air outlet effect.

Further, when the pot cover 210 and the pot body 220 are closed, the steam guiding pipe 230 is located in the central area of the cooking cavity of the pot body 220 . When the steam guide pipe 230 is located in the central area of the cooking cavity of the pot body 220, the steam will be diffused and heated from the center of the cooking cavity, and the rice milk in the cooking cavity will be heated more evenly, and there will be no heating dead angle.

In this embodiment, the bottom of the air outlet 232 of the steam guiding pipe 230 is closed, and the air outlet 233 is disposed on the side wall of the air outlet 232 . The steam guiding pipe 230 is inserted into the rice milk when the pot lid 210 and the pot body 220 are closed. When the steam guiding pipe 230 is inserted into the rice milk, it is resisted by the rice milk, and its force-bearing surface is mainly the bottom of the steam guiding part. , that is, the bottom of the air outlet part 232 .

In this embodiment, the bottom of the steam guiding pipe 230 is closed, and the air outlet 233 is arranged on the side wall of the air outlet 232, which can effectively prevent the rice grains in the rice milk from entering the steam guiding pipe 230, and prevent the rice grains in the rice milk from being stuck in the steam guiding pipe 230. On the air outlet 233.

Further, the air outlet 233 of the air outlet 232 is located 1-3 cm below the liquid surface of the cooking chamber. If the gas outlet 233 of the gas outlet 232 is located less than 1cm below the liquid surface, when the speed of the steam is too fast, the ejected steam will hit the liquid surface, which may cause the liquid at the gas outlet 233 to flow around. Spread out, the steam discharged from the air outlet 233 cannot fully contact the liquid, and the cooking time is slow; if the air outlet 233 of the steam guide pipe 230 is located more than 3cm below the liquid surface, the steam will form a large amount of foam under the liquid surface, and the foam will flow from the liquid surface When it rises above the liquid level and explodes, a large amount of food to be cooked is bonded to the inner wall of the pot body 220 above the liquid level, which affects user experience.

Further, the aperture of the air outlet 233 is set between 1mm and 3mm, such as 1mm, 1.5mm, 2mm, 2.5mm, 3mm, when the aperture of the air outlet 233 is less than 1mm, the air outlet pressure at the air outlet 233 is too large, and the air outlet 233 The noise produced by the inner part is relatively large. When the aperture of the air outlet 233 is greater than 3 mm, the aperture of the air outlet 233 is too large, and the rice grains in the rice milk are easy to enter the inside of the steam guide pipe 230, causing cleaning difficulties. In addition, the rice grains in the rice milk are also It is easy to get stuck on the air outlet 233, affecting the normal air outlet 233.

In this embodiment, after the steam enters the steam guiding pipe 230 from the steam input port, it rushes in along the radial direction of the steam guiding pipe 230 . Since the bottom of the steam guide pipe 230 is closed and the gas outlet 233 is located at the side of the gas outlet 232, the influx of steam meets the inner side of the bottom wall of the gas outlet 232 and turns back, and finally squeezes out of the gas outlet 233 under the action of air pressure. Obviously, the bottom wall of the gas outlet 232 has a certain reduction effect on the impact force of the steam, which leads to a certain attenuation of the force of the steam ejected from the gas outlet 233 .

Preferably, in this embodiment, a guide structure 235 is provided between the inner side of the bottom wall of the air outlet part 232 and the inner side of the side wall of the air outlet part 232, and the guide structure 235 may be the connection between the inner side of the bottom wall of the air outlet part 232 and the inner side of the side wall of the air outlet part 232 The arc surface or the connection slope between the inner side of the bottom wall of the air outlet 232 and the inner side of the side wall of the air outlet 232, when the influx of steam is blocked by the bottom wall of the air outlet 232, the guide structure 235 can guide the steam that turns back. The function is to introduce the steam turned back into the gas outlet 233 to be discharged. In this way, it is possible to prevent the secondary redirection of the steam turned back, resulting in further attenuation of the injection force of the steam.

Further, there are multiple air outlets 233 , and the multiple air outlets 233 are arranged around the circumference of the air outlet 232 . In this way, when the steam is ejected from the air outlet 233, it is sprayed in a ring shape, and the rice milk in all directions in the cooking chamber can be driven by the air bubbles, forming a tumbling effect. The tumbling effect of the rice milk is good, and the rice milk is evenly heated.

After the steam is ejected from the air outlet 233, because its own air pressure is greater than the hydraulic pressure of the rice milk, there will be a process of bubble expansion. The expansion of the bubbles becomes larger, and the space occupied by the air bubbles becomes larger. In a small case, they will collide with each other, thereby offsetting a part of the jet's elastic force, so that the air bubbles cannot reach the area far from the air outlet 233, which is not conducive to Heat the rice milk evenly.

In this embodiment, the adjacent air outlets 233 are arranged in a staggered direction in the diameter direction of the steam guide pipe 230. The tubes 230 are radially misaligned or not completely coincident. In this way, on the one hand, the air bubbles generated by the adjacent air outlets 233 can be sprayed up and down in dislocation, reducing the collision between the air bubbles; More air outlets 233 are set on the part 232. On the other hand, the steam is ejected from the upper and lower dislocated air outlets 233, and the rice milk is pushed to flow from the upper and lower directions, which will make the rice milk form the effect of interactive convection, and the rice milk will roll More fully, the rice milk is heated more evenly.

When the air outlet 233 is set up and down, the steam will flow to the air outlet 233 above the steam guide pipe 230 after entering the steam guide pipe 230, and a part of the steam will be discharged from the upper air outlet 233 first, and the remaining steam will continue to flow by the steam The air outlet 233 below the guide pipe 230 discharges the steam guide pipe 230 . Obviously, the steam discharged from the air outlet 233 located above the steam guiding pipe 230 is subjected to a large pressure effect, and the injection effect is good; the steam discharged from the air outlet 233 located below the steam guiding pipe 230 is subjected to a small pressure effect, and the injection effect is certain. attenuation. In this way, the intensity of the steam ejected from the air outlets 233 at different positions above and below will be inconsistent, resulting in the rice slurry not forming the effect of interactive convection or forming a poor effect of interactive convection, affecting the tumbling effect and heating effect of the rice slurry.

In this embodiment, the projections of the air outlets 233 on the air outlet portion 232 that are dislocated up and down in the circumferential direction of the air outlet portion 232 are at least partly overlapped. In this way, on the one hand, the area where the air outlet 233 is arranged on the air outlet 232 can be enlarged; It can ensure that the steam ejected from the misplaced air outlet 233 pushes the rice slurry to form the effect of interactive convection.

In this embodiment, when cooking, the steam guiding pipe 230 is inserted into the rice milk. In order to make the process of inserting the steam guiding pipe 230 into the rice milk more smoothly, and also to open the pot cover 210 after the cooking of the rice is completed, After the steam guiding pipe 230 is pulled out of the rice, it has little influence on the smoothness of the rice. The steam guide pipe 230 of this embodiment is provided with an avoidance structure 236 between the bottom wall and the side wall of the air outlet 232. The avoidance structure 236 is used to reduce the resistance of the steam guide pipe 230 inserted into the rice milk on the one hand, and on the other hand, When cooking solid ingredients such as meat and bones, The avoidance structure 236 can push the solid foodstuff to move, and open the path channel for the steam guiding pipe 230 to be inserted into the cooking cavity.

In some embodiments, the avoidance structure 236 may be an arc transition part between the bottom wall and the side wall of the air outlet part 232, and the arc transition part provided between the bottom wall and the side wall of the air outlet part 232 makes the steam guiding pipe 230 The bottom is approximately spherical, and when the spherical bottom comes into contact with solid food, the food will be subject to a force component moving sideways, so that the steam guide tube 230 can push the food away and insert it into the cooking cavity, thus ensuring that the steam guide tube 230 can be smoothly inserted into the cooking cavity, and the pot cover 210 can be smoothly covered with the pot body 220, which is convenient for users to use.

In some other embodiments, the avoidance structure 236 may be a slope transition part between the bottom wall and the side wall of the air outlet part 232, and the slope transition part 234 is provided between the bottom wall and the side wall of the gas outlet part 232, and the steam guiding pipe 230 is inserted into the When the rice milk is in the rice milk, the rice milk will be separated along the inclined plane transition part 234, and the inclined plane transition part 234 has played a role in separating the liquid surface, and the process of inserting the steam guiding pipe 230 into the cooking chamber is subjected to less resistance.

In addition, the setting of the avoidance structure 236 makes the overall outer contour curve of the steam guide pipe 230 softer and smoother, and the appearance is more beautiful. On the other hand, when the steam guide pipe 230 is inserted into rice milk or pulled out from the rice, the process is smoother. It has little effect on the flatness of rice.

In this embodiment, the steam guide pipe 230 is sealed and fixed through the connection part 231 and the pot cover 210, and the connection method is a detachable connection, such as buckle or clamping, so that it is convenient for the user to remove the steam guide pipe 230. The steam guide pipe 230 is cleaned.

In addition, when the cooking is completed, the work of the steam generator needs to be stopped before opening the cover. After the steam generator 150 stops working, it stops delivering high-temperature steam to the steam pipeline. Objectively, the thermal insulation performance of the steam pipeline cannot be guaranteed to be perfect. The heat of the high-temperature steam in the road will gradually be lost. In this way, the high-temperature steam in the steam pipeline will gradually condense and reduce the pressure in the steam pipeline. When the pressure in the steam pipeline is lower than the pressure in the cooking cavity, the pressure difference between the inside and outside of the steam pipeline will reduce The soup juice etc. squeezed into the steam pipeline, that is, the phenomenon of the steam pipeline sucking back is formed, which brings great inconvenience to the user's cleaning.

In order to solve the above problems, the present embodiment is provided with an anti-suckback hole 237 on the steam guide pipe 230, the anti-suckback hole 237 is arranged above the liquid level of the cooking cavity, and the anti-suckback hole 237 is connected with the steam pipeline, when the steam generator 150 stop working, when the inside of the steam pipeline is under negative pressure, the cooking The gas in the upper part of the cooking cavity will enter the steam pipeline first than the liquid at the bottom of the cooking cavity to balance the pressure difference inside and outside the steam pipeline, thereby preventing the liquid in the cooking cavity from being sucked back into the steam pipeline.

Embodiment five

In this embodiment, on the basis of the fourth embodiment, a steaming rack 240 is provided in the cooking cavity.

In this embodiment, referring to FIG. 24-FIG. 26 , the steaming rack 240 is placed in the cooking cavity, and the steam guiding pipe 230 communicates with the steam inlet hole and penetrates the steaming rack 240 from top to bottom for guiding steam into the bottom of the steaming rack 240 space. In the existing steamer for steaming food, a certain amount of water needs to be stored in the lower part of the steaming rack 240 in the cooking cavity, and the food placed on the upper part of the steaming rack 240 is steamed by the water vapor generated by the heating of the water. Because the water for steaming food occupies the lower space of the cooking chamber, the space left by the cooking chamber for the food to be steamed is reduced, making the steamer unable to steam a large amount of food or food with a large volume at the same time; enough, it is necessary to store a sufficient amount of water in the lower part of the steaming rack 240 for steaming, so that the distance between the water surface and the steaming rack 240 is too close. During the steaming process, the boiling water will contact the food through the steaming rack 240, and the steaming The lower part of the food is soaked in a large amount of water, resulting in poor steaming effect and affecting the taste of the food. In the present invention, the steam inlet hole on the pot cover 210 leads the steam outside the cooking cavity, and the steam guide pipe 230 guides the steam that enters the cooking cavity through the steam inlet hole, and guides the steam to the bottom of the steam rack 240, and the steam guides The steam that the pipe 230 passes into the cooking cavity carries a large amount of heat energy and moves from the bottom of the steaming frame 240 to the top of the steaming frame 240, and steams the food placed on the steaming frame 240, and finally exhausts the cooking cavity through the exhaust channel 220, because the water vapor It is generated outside the cooking cavity, and there is no need to heat water in the cooking cavity to generate water vapor, so it can effectively prevent the water boiling under the steaming rack 240 from contacting the food through the steaming rack 240 to soak the lower part of the food during the steaming process, ensuring the taste of the food At the same time, the steaming rack 240 can be placed near the bottom of the cooking cavity, increasing the space on the upper part of the steaming rack 240, so that a large amount of food can be placed on the steaming rack 240, and food with a large volume can also be placed, so that the steamer can be used for a large amount of food. Or the steaming of larger food.

In this embodiment, the steaming rack 240 can be limited by an annular protrusion or an annular step arranged on the inner wall of the cooking cavity, or can be limited by other limiter structures, or the cooking cavity can be set as a lower part. The inner diameter gradually decreases from top to bottom, so that the section of the lower side wall of the cooking cavity is arc-shaped. The steaming rack 240 is installed on the side wall of the lower section of the cooking cavity. The side wall supports and limits the steaming rack 240. Rack 240 is put into cooking cavity, preferably, The outside of the steaming rack 240 is provided with a flange. When the steaming rack 240 is installed in the cooking chamber, the flange of the steaming rack 240 is in contact with the side wall of the cooking chamber to prevent the outside of the steaming rack 240 from scratching the inner wall of the cooking chamber.

In this embodiment, the steaming rack 240 and the steam guiding pipe 230 are arranged separately. As shown in FIG. By setting the through hole 241 for the steam guide pipe 230 to pass through, the steam guide pipe 230 and the pot cover 210 can be arranged separately or integrally. Preferably, the steam guide pipe 230 is detachably installed on the pot cover 210. When the steam guide pipe 230 is damaged, the steam guide pipe 230 can be disassembled separately for replacement, which reduces maintenance and replacement costs. The steam guide pipe 230 and the pot cover 210 can be connected by plugging, clipping, threading or fasteners wait. When the cooking pot for steam heating is used as a steam rice cooker, the steam guide pipe 230 connected to the pot cover 210 can guide the steam to cook food such as rice; when the cooking pot for steam heating is used as a steamer, only The steaming rack 240 needs to be placed in the cooking cavity, and then the pot lid 210 is closed on the pot body 220. During the covering process, the steam guiding pipe 230 extends under the steaming rack 240 through the through hole 241, and it can be used as a steamer It is simpler and more convenient to use; preferably, the inner diameter of the through hole 241 is larger than the inner diameter of the steam guide pipe 230, so as to facilitate the passage of the steam guide pipe 230 and prevent abrasion between the steam guide pipe 230 and the through hole 241.

In this embodiment, the part of the steam guiding pipe 230 extending into the space below the steaming rack 240 is provided with an air outlet 233 facing the side of the cooking chamber, and the steam is discharged to the side wall of the cooking chamber through the air outlet 233, and then moves upward to steam the food; Or, the part of the steam guide pipe 230 extending into the space below the steaming rack 240 is provided with a bottom air outlet towards the bottom surface of the cooking chamber, and the steam is discharged to the bottom wall of the cooking chamber through the bottom air outlet, and then is blocked by the bottom wall to flow to the upper part of the cooking chamber. Or, the part where the steam guide pipe 230 extends into the space below the steam rack 240 is provided with a bottom air outlet towards the bottom surface of the cooking cavity and an air outlet 233 towards the side of the cooking cavity. Preferably, the air outlet 233 is provided with multiple, A plurality of air outlets 233 are arranged around the central axis of the steam guide pipe 230 , so that the air output from the steam guide pipe 230 in all directions is equal, and the steaming effect on the food at each position of the steam rack 240 is more uniform.

In this embodiment, the air outlet 233 and the bottom surface of the cooking cavity have a distance of 2 mm to 30 mm; or, the bottom air hole and the bottom surface of the cooking cavity have a distance of 2 mm to 30 mm; or, the air outlet 233 and the bottom air hole are both connected to The bottom surface of the cooking cavity has a distance of 2 mm to 30 mm. Keep a certain distance between the air outlet 233 and/or the bottom air outlet and the bottom wall of the cooking cavity, keep the ventilation of the air outlet 233 and/or the bottom air outlet, prevent the air outlet 233 and/or Or when the distance between the bottom air outlet and the bottom wall of the cooking cavity is too close, the air outlet 233 and/or the bottom air outlet will be blocked because the condensed water at the air outlet 233 and/or the bottom air outlet cannot be discharged too much.

In this embodiment, the steam inlet hole is located in the middle of the pot cover 210, and the steam guiding pipe 230 vertically penetrates from the middle of the steaming rack 240 to the space below the steaming rack 240. The steam guiding pipe 230 vertically penetrates the steaming rack 240, which can reduce the steam The material used for the guide pipe 230, and because the steam discharge end of the steam guide pipe 230 is located at the center of the lower part of the steaming rack 240, the steam can be evenly discharged to the surroundings, and the food placed in each position of the steaming rack 240 can be processed. Uniform heating, more even steaming effect.

The steam guide pipe can be integrally arranged on the pot cover, or the steam guide pipe 230 and the pot cover 210 can be arranged separately, and the steam guide pipe 230 and the steam rack 240 can be arranged separately, and the steam guide pipe 230 can be taken and placed through the guide bracket. Placed in the cooking cavity, when the user needs to steam food, first put the steam guide pipe 230 and the steaming rack 240 into the cooking cavity, and then cover the pot cover 210 on the pot body 220, and the pot cover 210 is completely closed. When the pot body 220 is on, the steam inlet hole communicates with the steam guide pipe 230 to guide the steam. By setting the steam guide pipe 230, the pot cover 210 and the steam rack 240 separately, the connecting structure is reduced and the cleaning of each part is facilitated. , more convenient to use.

The steam guiding pipe 230 can also be installed on the steaming rack 240, and the steam guiding pipe 230 and the steaming rack 240 can be arranged as a whole or can be fixed on the steaming rack 240 by plugging, fasteners, threaded connection or clamping. When using, the user only needs to put the steaming rack 240 together with the steam guiding pipe 230 into the cooking cavity, and then put the pot cover 210 on the pot body 220. It is simple and convenient to use, and the pot cover 210 is completely closed to the pot When the body 220 is on, the steam inlet hole communicates with the steam guide pipe 230 to guide the steam.

The steam guiding pipe 230 can also be a first guiding pipe and a second guiding pipe which are provided separately. The frame 240 is connected. When the pot cover 210 is closed on the pot body 220, the first guide pipe is docked with the second guide pipe, so that water vapor enters the first guide pipe through the steam inlet hole, and then enters the second guide pipe through the first guide pipe. The guide pipe finally enters the cooking cavity below the steam rack 240 through the second guide pipe.

When the cooking pot for steam heating is used as a steam rice cooker, the first guide pipe connected to the pot cover 210 can guide the steam. When the cooking pot for steam heating is used as a steamer, there is no need to use the first guide pipe To remove, simply put in the cooking cavity connected with a second guide The steaming frame 240 of the tube, the first guiding tube and the second guiding tube connected together can form the steam guiding tube 230, which is simpler and more convenient to use.

In this embodiment, preferably, the first guide tube is provided with an extension part inserted into the second guide tube or the second guide tube is provided with an extension part inserted into the first guide tube, so that the distance between the first guide tube and the second guide tube They are connected by overlapping extensions, which enhance the sealing between the first guide tube and the second guide tube, and also enhance the stability between the first guide tube and the second guide tube, ensuring that the first guide tube and the second guide tube The butt joint position between the two guiding pipes is accurate, so that the guiding direction of the water vapor is guaranteed to be accurate.

It can be understood that the above embodiments can be combined with each other to obtain more embodiments under the premise of no conflict.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, and those skilled in the art should understand that the present invention includes but is not limited to the accompanying drawings and the description in the above specific embodiments content. Any modifications that do not deviate from the functional and structural principles of the present invention shall be included in the scope of the claims.

100‧‧‧body

110‧‧‧machine head

120‧‧‧base

140‧‧‧water pump

150‧‧‧Steam generator

500‧‧‧rotating shaft

Claims (11)

A steam heating cooking appliance includes a body and a pot, the body includes a body and a machine head, the pot is placed on the body, a steam generator is arranged inside the body, and the machine head is provided with a pot There is a butted steam port, the steam generator communicates with the steam port through a hose, and the machine head is reversibly set on the machine body, which includes a first station that is docked with the pot to introduce steam and is connected with the pot The separated second station is characterized in that the machine head is connected to the machine body through a rotation limiter device, and the rotation limiter device limits the movement of the machine head between the first station and the second station. The rotation limiter device is provided with a driving part and a stepping motor, and the stepping motor and the driving part are used to drive the machine head to turn upwards from the first station to the second station. Two stations, and allow the machine head to be manually flipped from the second station to the first station. According to the steam heating cooking appliance described in Claim 1, it is characterized in that the angle at which the second station turns over relative to the first station is 10°-60°. According to the steam heating cooking appliance according to claim 1, it is characterized in that the body is provided with a rotating shaft, and the machine head can be turned around the rotating shaft to achieve docking with or separating from the pot, and the hose below the shaft. According to the steam heating cooking appliance according to claim 1, it is characterized in that a supporting part is provided on the body, and the supporting part supports the nose. According to the steam heating cooking appliance according to claim 4, it is characterized in that the body includes a base and a column arranged on one side of the base, and the support part protrudes from the side of the column toward the direction of the machine head , to form a support for the bottom of the nose. According to the steam heating cooking appliance described in Claim 1, it is characterized in that the rotation limiter device has a locked state and an unlocked state, and the locked state is used to lock the machine head at the first station, The drive member drives the machine head to turn upwards from the first station to the second station in the unlocked state. According to the steam heating cooking appliance described in claim 1, it is characterized in that the pot includes a pot body and a pot cover, the pot cover is closed on the pot body to form a cooking cavity, and the pot cover is provided with a steam inlet When the machine head is docked with the pot, steam is introduced from the steam inlet hole to the cooking cavity, and a steam guide pipe is arranged on the steam inlet hole. According to the steam heating cooking appliance according to claim 7, it is characterized in that the steam guiding pipe has a connection part near the end of the pot cover and an air outlet part far away from the end of the pot cover, and the air outlet part An air outlet is provided, and the pipe diameter of the air outlet part is smaller than the pipe diameter of the connecting part. According to the steam heating cooking appliance according to claim 7, it is characterized in that the pot further includes a steaming rack, the steaming rack is placed in the cooking cavity, and the steam guiding pipe communicates with the steam inlet hole and is controlled by It runs through the steaming rack from top to bottom, and is used to guide steam into the space below the steaming rack. According to the steam heating cooking appliance according to claim 9, it is characterized in that the steaming rack is provided with a through hole, and the steam guiding pipe extends to the space below the steaming rack through the through hole. According to claim 8, the steam heating cooking appliance is characterized in that the bottom of the air outlet part of the steam guiding pipe is closed, and the air outlet is arranged on the side wall of the air outlet.

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