WO2021128907A1

WO2021128907A1 - Steam valve structure and device having same

Info

Publication number: WO2021128907A1
Application number: PCT/CN2020/111287
Authority: WO
Inventors: 郑芝云; 胡玉新; 孔进喜; 陈崇得; 李佳宏; 张力文
Original assignee: 珠海格力电器股份有限公司
Priority date: 2019-12-25
Filing date: 2020-08-26
Publication date: 2021-07-01
Also published as: CN110974041A

Abstract

A steam valve structure and a device having same. The steam valve structure comprises: a base assembly, on which a first air discharge passage suitable for being in communication with a pot body is provided; an upper cover assembly, which is liftably provided on the base assembly, and has an initial position at which the upper cover assembly covers the base assembly and a lifting position at which the upper cover assembly has a distance from the base assembly, wherein when the upper cover assembly is at the lifting position, a gap between the upper cover assembly and the base assembly forms a second air discharge passage, the second air discharge passage being in communication with the first air discharge passage; and a driving device configured to drive the upper cover assembly to move up and down. The area of an air outlet of the second air discharge passage can be adjusted, and the steam valve structure is applicable to electric rice cookers having high power, and is able to adjust the area of the air outlet according to different powers, thereby avoiding overflowing of food.

Description

Steam valve structure and device with same

This disclosure claims the priority of a Chinese patent application filed with the Chinese Patent Office on December 25, 2019, with an application number of 201911362080.4 and an invention title of "a steam valve structure and a device having the same", the entire content of which is incorporated by reference In this disclosure.

Technical field

The present disclosure relates to the technical field of household appliances, in particular to a steam valve structure and a device having the same.

Background technique

Electric rice cookers usually have different functions such as cooking rice, cooking porridge or boiling soup. Different functions correspond to different powers. Since the outlet area of the steam valve structure of current rice cookers is fixed, the outlet area of the steam valve cannot be the same as the power. Matching, when using the corresponding function of high power, due to the small area of the outlet of the steam valve, the airflow at the outlet is too fast, causing food to overflow. In order to avoid food overflow, the power of the current rice cooker is not too large. Heating is slower.

Summary of the invention

Therefore, the technical problem to be solved by the present disclosure is to overcome the defect that the steam valve structure of the electric rice cooker in the related art is prone to food overflow, so as to provide a steam valve structure that can avoid food overflow and a device with the same.

In order to solve the above technical problems, a steam valve structure provided by the present disclosure includes:

A base assembly, the base assembly is formed with a first exhaust passage adapted to communicate with the pot body;

The upper cover assembly is arranged on the base assembly so as to be lifted and lowered, and has an initial position covering the base assembly and a rising position with a distance from the base assembly. When the upper cover assembly is in the rising position , The gap between the upper cover assembly and the base assembly forms a second exhaust passage, and the second exhaust passage communicates with the first exhaust passage;

The driving device is configured to drive the upper cover assembly to move up and down.

In some embodiments, the driving device includes a power device and a transmission mechanism, and the transmission mechanism drives the upper cover assembly to move up and down under the drive of the power device.

In some embodiments, the base assembly includes:

A base on which the power device is arranged;

The rotating part is rotatably arranged on the base and rotates under the drive of the power device.

In some embodiments, the transmission mechanism includes:

A first motion conversion mechanism, which connects the power device and the rotating part, and is adapted to drive the rotating part to rotate under the drive of the power device;

The second motion conversion mechanism is configured to convert the rotation of the rotating member into the lifting motion of the upper cover assembly;

The limit structure restricts the circumferential movement of the upper cover assembly.

In some embodiments, the first motion conversion mechanism includes:

Driving gear, connected to the power device, adapted to rotate under the drive of the power device;

The meshing tooth is arranged on the rotating part and meshes with the driving gear.

In some embodiments, the second motion conversion mechanism includes:

Inclined protrusions are provided on the outer peripheral wall of the rotating member;

The inclined groove is arranged on the upper cover assembly and is matched with the inclined protrusion.

In some embodiments, the limiting structure includes:

The limit post is arranged on the upper cover assembly;

The limit cavity is arranged on the base assembly and is configured to limit the rotation of the limit post, and the limit post is arranged in the limit cavity so as to be liftable.

In some embodiments, the base assembly further includes an inner cover fixedly connected to the base, the inner cover includes a first ring-shaped body, the first ring-shaped body is adapted to be supported on the base, and the limit The location cavity is a limiting hole formed on the first annular body.

In some embodiments, a sealing ring is provided in the limiting hole.

In some embodiments, the inner cover further includes a second annular body extending downward from the lower end of the first annular body, a first through hole is provided on the base, and the second annular body is suitable for being embedded In the first through hole, the first exhaust passage is formed in the second annular body, and an installation cavity suitable for installing the rotating member is formed between the second annular body and the outer peripheral wall of the base .

In some embodiments, the upper cover assembly includes a supporting structure and an upper cover covering the supporting structure, and the limiting column is provided on the supporting structure.

In some embodiments, the upper cover is detachably connected to the supporting structure.

In some embodiments, the lower end of the upper cover is provided with an annular groove, the support structure includes a third annular body, and the third annular body is adapted to be embedded in the annular groove.

In some embodiments, the outer edge of the third ring-shaped body is provided with a turnbuckle, and the upper cover is provided with a protrusion that cooperates with the turnbuckle.

In some embodiments, a first side plate extends downward from the lower end of the upper cover.

In some embodiments, the power device is a stepper motor.

In some embodiments, the base is provided with a first limiting portion and a second limiting portion at intervals, a second side plate is provided outside the rotating member on one side of the meshing tooth, and the upper cover When the assembly is in the initial position, the second side plate is in contact with the first limiting portion, and when the upper cover assembly is in the highest ascending position, the side of the meshing tooth away from the second side plate is in contact with The second limiting part cancels out.

In some embodiments, the base is provided with a first micro switch and a second micro switch interlocking with the driving motor at intervals, and a second micro switch is provided outside the rotating member on one side of the meshing tooth. Side plate, when the upper cover assembly is in the initial position, the second side plate is in contact with the first micro switch, and when the upper cover assembly is in the highest rising position, the meshing teeth are away from the first One side of the two side plates is in contact with the second micro switch.

The present disclosure also provides a device with a steam valve structure, including the steam valve structure.

The device with a steam valve structure is an electric rice cooker.

The technical solution of the present disclosure has the following advantages:

1. In the steam valve structure provided by the present disclosure, the upper cover assembly is driven to move up and down through the driving device, so that the distance between the upper cover assembly and the base assembly can be adjusted, and the gap between the upper cover assembly and the base assembly forms a second row Therefore, the area of the air outlet of the second exhaust channel can be adjusted. The steam valve structure can be applied to electric rice cookers with higher power, and the area of the air outlet can be adjusted according to different powers, thereby avoiding food overflow.

2. In the steam valve structure provided by the present disclosure, the driving device includes a power device and a transmission mechanism. The transmission mechanism drives the upper cover assembly to move up and down under the drive of the power device. The steam valve structure is usually installed in the rice cooker. On the cover of the pot, this arrangement can make the power unit be arranged on the side of the exhaust channel, so as not to affect the normal exhaust.

3. In the steam valve structure provided by the present disclosure, the transmission mechanism includes: a first motion conversion mechanism, which connects the power device and the rotating part, and is suitable for driving the rotating part to rotate under the drive of the power device The second motion conversion mechanism is configured to convert the rotation of the rotating member into the lifting motion of the upper cover assembly; a limit structure, which restricts the circumferential movement of the upper cover assembly, a power device and a transmission mechanism It will not affect the normal exhaust of the steam valve structure, and the exhaust process will not cause damage to the power unit and the transmission mechanism.

4. In the steam valve structure provided by the present disclosure, the second motion conversion mechanism includes: an inclined protrusion, which is arranged on the outer peripheral wall of the rotating member; an inclined groove, which is arranged on the upper cover assembly and is connected with The inclined protrusion is matched, and the rotation of the rotating part is converted into the lifting movement of the upper cover assembly through the cooperation of the inclined protrusion and the inclined groove, and the structure is simple and compact.

5. In the steam valve structure provided by the present disclosure, the limiting structure includes: a limiting column, which is arranged on the upper cover assembly; a limiting cavity, which is arranged on the base assembly and is arranged to limit the position The rotation of the column is restricted. The limiting column can be lifted and lowered in the limiting cavity. The limiting column is adopted. When the upper cover assembly is in the raised position, the gap between the upper cover assembly and the base assembly is For the air outlet, the area of the air outlet is larger.

6. In the steam valve structure provided by the present disclosure, a sealing ring is arranged in the limiting hole, which can prevent steam or foreign matter from entering the limiting cavity and ensure that the limiting column can move up and down in the limiting cavity.

7. In the steam valve structure provided by the present disclosure, the inner cover further includes a second annular body extending downward from the lower end of the first annular body, a first through hole is provided on the base, and the second annular body The body is adapted to be embedded in the first through hole, the first exhaust passage is formed in the second annular body, and the second annular body is formed between the outer peripheral wall of the base and suitable for mounting the rotation The installation cavity of the parts is arranged in this way so that the steam will not cause damage to the rotating parts and ensure the normal operation of the rotating parts.

8. In the steam valve structure provided by the present disclosure, the upper cover assembly includes a support structure and an upper cover covering the support structure, the limiting column is provided on the support structure, and the upper cover can prevent foreign matter Enter the first exhaust passage.

9. In the steam valve structure provided by the present disclosure, the upper cover is detachably connected to the supporting structure, which facilitates the removal of the upper cover for cleaning.

10. In the steam valve structure provided by the present disclosure, the outer edge of the third ring-shaped body is provided with a turnbuckle, the upper cover is provided with a bump that cooperates with the turnbuckle, and the upper cover and the supporting structure are buckled by the rotation It is connected in a closed manner, the connection is stable, and it is easy to disassemble.

11. In the steam valve structure provided by the present disclosure, a first side plate extends downward from the lower end of the upper cover. When the steam valve structure is in use, the first side plate can prevent steam from overflowing in the direction where the display panel is provided.

12. In the steam valve structure provided by the present disclosure, the power device is a stepping motor, which is convenient for accurately controlling the lifting height of the upper cover assembly to match the power of the rice cooker.

13. In the steam valve structure provided by the present disclosure, the base is provided with a first limiting portion and a second limiting portion at intervals, and a second side plate is provided on one side of the meshing tooth outside the rotating member, When the upper cover assembly is in the initial position, the second side plate is in contact with the first limiting portion, and when the upper cover assembly is in the highest ascending position, the meshing teeth are away from the second side plate One side of the abutting against the second limit part can prevent the rotating part from rotating to a position where it is out of mesh with the driving gear, and ensure normal operation.

14. In the steam valve structure provided by the present disclosure, the base is provided with a first micro switch and a second micro switch interlocking with the driving motor at intervals, and the rotating member is located on one side of the meshing tooth A second side plate is provided. When the upper cover assembly is in the initial position, the second side plate is in contact with the first micro switch, and when the upper cover assembly is in the highest rising position, the meshing teeth The side far away from the second side plate is in contact with the second micro switch, which can control the highest rising position of the upper cover assembly, prevent the rotating part from rotating to a position where it is meshed with the driving gear, and ensure normal operation.

15. The device with a steam valve structure provided by the present disclosure includes the steam valve structure described. The device can adjust the size of the air outlet to match the power without overflowing food.

Description of the drawings

In order to more clearly explain the technical solutions in the specific embodiments of the present disclosure or related technologies, the following will briefly introduce the drawings that need to be used in the specific embodiments or related technical descriptions. Obviously, the drawings in the following description are For some of the embodiments of the present disclosure, for those of ordinary skill in the art, other drawings may be obtained based on these drawings without creative work.

FIG. 1 is a schematic structural diagram of the steam valve structure provided in Embodiment 1 of the present disclosure;

Figure 2 is an exploded view of the steam valve structure shown in Figure 1;

FIG. 3 is a schematic diagram of the structure of the upper cover shown in FIG. 2;

Fig. 4 is a schematic structural diagram of the supporting structure shown in Fig. 2;

Fig. 5 is a schematic structural diagram of the inner cover shown in Fig. 2;

Fig. 6 is a schematic diagram of the structure of the rotating member shown in Fig. 2;

FIG. 7 is a schematic diagram of the structure of the base shown in FIG. 2;

Figure 8 is a schematic structural view of the steam valve structure shown in Figure 1 installed on the lid of the pot;

Description of reference signs:

1-base; 11-screw hole; 12-first limiting part; 13-second limiting part; 14-mounting groove; 2-rotating member; 21-meshing tooth; 22-inclined protrusion; 23-section Two side plates; 3-inner cover; 31-limiting hole; 32-screw column; 33-first annular body; 34-second annular body; 4-support structure; 41-inclined groove; 42-limiting column ; 43-The third annular body; 44-Turnlock; 5-Upper cover; 51-First side plate; 52-Annular groove; 53-Bump; 6-Power unit; 7-Drive gear; 8-Seal ring; 9-Boiler lid.

Detailed ways

The technical solutions of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are a part of the embodiments of the present disclosure, but not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present disclosure.

In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the pointed device or element must have a specific orientation or a specific orientation. The structure and operation cannot therefore be construed as a limitation of the present disclosure. In addition, the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

In the description of the present disclosure, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, they can be fixed or detachable. Connected or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present disclosure can be understood in specific situations.

In addition, the technical features involved in the different embodiments of the present disclosure described below can be combined with each other as long as they do not conflict with each other.

Example 1

This embodiment provides a specific implementation of a steam valve structure. As shown in Figs. 1 to 8, the steam valve structure is suitable for installation on an electric rice cooker or a pressure cooker, and includes a base assembly, an upper cover assembly, and a driving device.

A first exhaust passage suitable for communicating with the pot body is formed on the base assembly. The base assembly of this embodiment includes a base 1, a rotating part 2, and an inner cover 3.

The upper cover assembly can be lifted and lowered on the base assembly, and has an initial position to cover the base assembly and a raised position spaced apart from the base assembly. When the upper cover assembly is in the raised position, between the upper cover assembly and the base assembly The gap between the two forms a second exhaust passage, and the second exhaust passage communicates with the first exhaust passage. The upper cover assembly of this embodiment includes an upper cover 5 and a supporting structure 4.

In some embodiments, the driving device includes a power device 6 and a transmission mechanism, and the transmission mechanism drives the upper cover assembly to move up and down under the drive of the power device 6. In other alternative embodiments, the driving device only includes the power device 6. The power device 6 is directly connected to the upper cover assembly to drive the upper cover assembly to move up and down. The power device 6 can use an air cylinder, but in this embodiment, the power device 6 Need to occupy a part of the exhaust channel.

The base 1 is provided with a power unit 6. The power unit 6 of this embodiment is a stepping motor. As shown in FIG. 7, a mounting slot 14 is provided on the base 1, and the stepping motor is installed in the mounting slot 14. In other alternative embodiments, an installation space for the power device 6 may be provided on the lid 9 of the rice cooker.

The rotating member 2 is rotatably arranged on the base 1 and is driven by the power device 6 to rotate.

The transmission mechanism includes a first motion conversion mechanism, a second motion conversion mechanism, and a limit structure. The first motion conversion mechanism connects the power device 6 and the rotating part 2, and is suitable for driving the rotating part 2 to rotate under the drive of the power device 6; The second movement conversion mechanism is configured to convert the rotation of the rotating member 2 into the lifting movement of the upper cover assembly; the limit structure restricts the circumferential movement of the upper cover assembly.

Specifically, the first motion conversion mechanism includes a driving gear 7 connected to the power device 6 and meshing teeth 21 provided on the rotating member 2. The driving gear 7 is adapted to rotate under the driving of the power device 6, and the meshing teeth 21 are connected to the driving gear. 7 Engagement. In other alternative embodiments, the first motion conversion mechanism may include a rack connected to the power device 6, and the rack is engaged with the meshing teeth 21 on the rotating member 2.

The second motion conversion mechanism includes an inclined protrusion 22 provided on the outer peripheral wall of the rotating member 2 and an inclined groove 41 provided on the upper cover assembly. The inclined protrusion 22 is embedded in the inclined groove 41, and the two are mutually connected. Cooperate.

The limit structure includes a limit post 42 provided on the upper cover assembly, and a limit cavity provided on the base assembly. The limit cavity is set to limit the rotation of the limit post 42 and the limit post 42 can be raised and lowered. In the limit cavity. The limiting cavity in this embodiment is a limiting hole 31 formed on the inner cover 3, and the limiting column 42 is inserted into the limiting hole 31 to move up and down. Using the method of the limit post 42, when the upper cover assembly is in the up position, the gap between the upper cover assembly and the base assembly is the air outlet. Assuming that the edge of the upper cover assembly is round, it extends downward to form a cylinder, which is located on the upper Between the cover assembly and the base assembly, because the volume of the limiting column is small, the area of the peripheral surface of the cylinder can be equal to the area of the air outlet, and the area of the air outlet is relatively large.

The inner cover 3 is fixedly connected with the base 1. Specifically, the inner cover 3 is provided with a screw post 32, the base 1 is provided with a screw hole 11, the inner cover 3 and the base 1 are connected by screws, and the inner cover 3 includes a first annular body 33 And a second annular body 34 extending downward from the lower end of the first annular body 33, the first annular body 33 is suitable for being supported on the base 1, and a limiting cavity is formed on the first annular body 33. The base 1 is provided with a first through hole, the second annular body 34 is adapted to be inserted into the first through hole, a first exhaust passage is formed in the second annular body 34, and the second annular body 34 is between the outer peripheral wall of the base 1. An installation cavity suitable for installing the rotating member 2 is formed.

In some embodiments, a sealing ring 8 is provided in the limiting hole 31. It can prevent steam or foreign objects from entering the limit cavity, and ensure that the limit post 42 can move up and down in the limit cavity.

The upper cover 5 is arranged on the supporting structure 4 to prevent foreign matter from entering the first exhaust passage.

In order to facilitate the removal of the upper cover 5 for cleaning, the upper cover 5 and the supporting structure 4 are detachably connected.

Specifically, the lower end of the upper cover 5 is provided with an annular groove 52, the support structure 4 includes a third annular body 43, and the third annular body 43 is suitable for being inserted into the annular groove 52.

The outer edge of the third annular body 43 is provided with a turnbuckle 44, and the upper cover 5 is provided with a protrusion 53 which is matched with the turnbuckle 44. The turnbuckle 44 includes a first groove and a second groove. The first groove penetrates the entire outer edge of the third annular body 43. The second groove is only provided on the lower half of the outer edge of the third annular body 43. The first groove is connected to the outer edge of the third annular body 43. The second groove is formed in an L shape, and the protrusion 53 is provided on the upper cover 5, and there is a gap between the upper cover body, so that the protrusion 53 can be inserted into the first groove first, and then inserted into the second groove by rotating. Inside. Of course, in other alternative embodiments, the upper cover 5 can also be provided with a turnbuckle 44, and the support structure 4 can be provided with a bump 53.

In order to prevent steam from overflowing in the direction where the display panel is provided, a first side plate 51 extends downward from the lower end of the upper cover 5.

The power unit 6 is a stepping motor, which is convenient for accurately controlling the lifting height of the upper cover assembly to match the power of the rice cooker.

In this embodiment, the base 1 is provided with a first limiting portion 12 and a second limiting portion 13 at intervals. The rotating member 2 is provided with a second side plate 23 on one side of the meshing tooth 21, and the upper cover assembly is located In the initial position, the second side plate 23 is in contact with the first limiting portion 12, and when the upper cover assembly is in the highest rising position, the side of the meshing tooth 21 away from the second side plate 23 abuts against the second limiting portion 13.

The initial position of the steam valve structure is defined as the position where the upper cover assembly is closed on the base assembly. At this time, the second exhaust passage is closed, the second side plate 23 is in contact with the first limiting portion 12, and the inclined groove 41 is stuck in When the lowest end of the inclined protrusion 22 needs to work, adjust the rising height of the upper cover assembly according to the required power to control the power unit 6 to start, and the power unit 6 drives the driving gear 7 to rotate, and the driving gear 7 passes through the meshing teeth 21 The meshing drives the rotating member 2 to rotate, and the limit post 42 rises along the inclined protrusion 22, thereby driving the upper cover assembly to rise. When the required height is reached, the power unit 6 stops working. When the required power is the maximum, the upper cover assembly is stopped. The cover assembly needs to rise to the highest position. Correspondingly, the meshing tooth 21 rotates to a position in contact with the second limiting portion 13 and cannot continue to rotate, so as to prevent the rotating part 2 from rotating to a position where it is meshed with the driving gear 7 to ensure normal operation. The steam valve structure can be applied to electric rice cookers with larger power, and shorten the time for cooking rice and congee. And the area of the air outlet can be adjusted according to different power, so as to avoid food overflow. Specifically, the upper cover assembly can reach a rising height of 15 mm, and the area of the corresponding air outlet can reach 3000 mm ² .

As the first alternative embodiment of the above-mentioned embodiment, the inner cover 3 may not be provided, the inner wall of the rotating member 2 forms a first exhaust passage, and a number of limit cavities are formed on the bottom cover, which are set to limit the upper cover assembly. Rotate so that it can only be moved up and down. The limiting cavity can be a ring tube formed on the base 1 and extending vertically upwards. The upper cover assembly is provided with a cylindrical structure inserted into the ring tube.

As a second alternative implementation of the above-mentioned embodiment, the second motion conversion mechanism includes an inclined surface provided on the outer peripheral wall of the rotating member 2, and the lower end of the limit post 42 abuts on the inclined surface.

As a third alternative embodiment of the above-mentioned embodiment, the base 1 is provided with a first micro switch and a second micro switch interlocking with the driving motor at intervals, and the rotating member 2 is located on one side of the meshing tooth 21. There is a second side plate 23. When the upper cover assembly is in the initial position, the second side plate 23 is in contact with the first micro switch. When the upper cover assembly is in the highest rising position, the side of the meshing teeth 21 away from the second side plate 23 is connected to The second micro switch contacts. In this embodiment, when the rotating member 2 rotates until the second side plate 23 is in contact with the first micro switch or the meshing tooth 21 is in contact with the second micro switch, it will cause the power device 6 to stop working.

Example 2

This embodiment provides a device with a steam valve structure, including the steam valve structure provided in the above embodiments. The device can adjust the size of the air outlet to match the power without overflowing food.

Specifically, the device with a steam valve structure is an electric rice cooker. As shown in FIG. 8, the steam valve structure is installed on the lid 9 of the electric rice cooker.

Obviously, the above-mentioned embodiments are merely examples for clear description, and are not intended to limit the implementation manners. For those of ordinary skill in the art, other changes or modifications in different forms can be made on the basis of the above description. It is unnecessary and impossible to list all the implementation methods here. The obvious changes or changes derived from this are still within the scope of protection created by the present disclosure.

Claims

A steam valve structure, including:

A base assembly, the base assembly is formed with a first exhaust passage adapted to communicate with the pot body;

The upper cover assembly is arranged on the base assembly so as to be lifted and lowered, and has an initial position covering the base assembly and a rising position with a distance from the base assembly. When the upper cover assembly is in the rising position , The gap between the upper cover assembly and the base assembly forms a second exhaust passage, and the second exhaust passage communicates with the first exhaust passage;

The driving device is configured to drive the upper cover assembly to move up and down.
The steam valve structure according to claim 1, wherein the driving device includes a power device (6) and a transmission mechanism, and the transmission mechanism drives the upper cover assembly to move up and down under the drive of the power device (6) .
The steam valve structure according to claim 2, wherein the base assembly comprises:

A base (1) on which the power device (6) is arranged;

The rotating part (2) is rotatably arranged on the base (1) and rotates under the drive of the power device (6).
The steam valve structure according to claim 3, wherein the transmission mechanism comprises:

The first movement conversion mechanism is connected to the power device (6) and the rotating member (2), and is adapted to drive the rotating member (2) to rotate under the drive of the power device (6);

The second movement conversion mechanism is configured to convert the rotation of the rotating member (2) into the lifting movement of the upper cover assembly;

The limit structure restricts the circumferential movement of the upper cover assembly.
The steam valve structure according to claim 4, wherein the first movement conversion mechanism comprises:

The driving gear (7) is connected with the power device (6) and is suitable for rotating under the drive of the power device (6);

The meshing tooth (21) is arranged on the rotating member (2) and meshes with the driving gear (7).
The steam valve structure according to claim 4, wherein the second movement conversion mechanism comprises:

The inclined protrusion (22) is arranged on the outer peripheral wall of the rotating member (2);

The inclined groove (41) is arranged on the upper cover assembly and is matched with the inclined protrusion (22).
The steam valve structure according to claim 4, wherein the limiting structure comprises:

The limit post (42) is arranged on the upper cover assembly;

The limit cavity is arranged on the base assembly and is configured to limit the rotation of the limit post (42), and the limit post (42) can be raised and lowered in the limit cavity.
The steam valve structure according to claim 7, wherein the base assembly further comprises an inner cover (3) fixedly connected to the base (1), and the inner cover (3) comprises a first annular body (33) The first annular body (33) is adapted to be supported on the base (1), and the limiting cavity is a limiting hole (31) formed on the first annular body (33).
The steam valve structure according to claim 8, wherein a sealing ring (8) is provided in the limiting hole (31).
The steam valve structure according to claim 8, wherein the inner cover (3) further comprises a second annular body (34) extending downward from the lower end of the first annular body (33), and the base ( 1) A first through hole is provided, the second annular body (34) is adapted to be inserted into the first through hole, and the first exhaust passage is formed in the second annular body (34), so An installation cavity suitable for installing the rotating member (2) is formed between the second annular body (34) and the outer peripheral wall of the base (1).
The steam valve structure according to claim 7, wherein the upper cover assembly includes a support structure (4), and an upper cover (5) covered on the support structure (4), and the limit post ( 42) Set on the supporting structure (4).
The steam valve structure according to claim 11, wherein the upper cover (5) and the supporting structure (4) are detachably connected.
The steam valve structure according to claim 11, wherein the lower end of the upper cover (5) is provided with an annular groove (52), the supporting structure (4) includes a third annular body (43), and the third The annular body (43) is adapted to be inserted into the annular groove (52).
The steam valve structure according to claim 13, wherein the outer edge of the third annular body (43) is provided with a spin button (44), and the upper cover (5) is provided with the spin button (44). ) Mating bumps (53).
The steam valve structure according to claim 11, wherein a first side plate (51) extends downward from the lower end of the upper cover (5).
The steam valve structure according to any one of claims 3-5, wherein the power device (6) is a stepping motor.
The steam valve structure according to claim 5, wherein the base (1) is provided with a first limiting portion (12) and a second limiting portion (13) at intervals, and the rotating member (2) is located outside A second side plate (23) is provided on one side of the meshing tooth (21), and when the upper cover assembly is in the initial position, the second side plate (23) and the first limiting portion (12) When the upper cover assembly is in the highest rising position, the side of the meshing tooth (21) away from the second side plate (23) abuts against the second limiting portion (13).
The steam valve structure according to claim 5, wherein the base (1) is provided with a first micro switch and a second micro switch that are linked with the driving motor at intervals, and the rotating member (2) is externally provided with a first micro switch and a second micro switch. A second side plate (23) is provided at one side of the meshing tooth (21). When the upper cover assembly is in the initial position, the second side plate (23) is in contact with the first micro-movement When the switch is in contact, when the upper cover assembly is at the highest rising position, the side of the meshing tooth (21) away from the second side plate (23) is in contact with the second micro switch.
A device with a steam valve structure, comprising the steam valve structure according to any one of claims 1-18.
The device with a steam valve structure according to claim 19, wherein the device with a steam valve structure is an electric rice cooker.