WO2018121199A1

WO2018121199A1 - Valve assembly and cooking device

Info

Publication number: WO2018121199A1
Application number: PCT/CN2017/114827
Authority: WO
Inventors: 何国达; 张垚; 程永康; 林创荣; 李新宇; 李景文
Original assignee: 佛山市顺德区美的电热电器制造有限公司
Priority date: 2016-12-30
Filing date: 2017-12-06
Publication date: 2018-07-05
Also published as: JP2020501729A; KR20190077041A; JP6811326B2; KR102195621B1

Abstract

A valve assembly and a cooking device. The valve assembly comprises a pressure valve and a drive device. The pressure valve is provided with a valve cavity (20), a valve rod (21) disposed in the valve cavity (20), and a valve opening (22) communicating with the outside. The valve rod (21) is provided with a seal end (211) in a seal match with the valve opening (22) and a drive end (212) opposite to the seal end (211). The valve rod (21) can move in the valve cavity (20). A cavity wall of the valve cavity (20) comprises an elastic wall (24) that is disposed corresponding to the drive end (212) of the valve rod (21) and that can elastically deform. The drive device is disposed outside the valve cavity (20), and comprises a piston rod (60). The front end (62) of the piston rod (60) in a movement direction is disposed corresponding to an outer wall of the elastic wall (24), so that the piston rod (60) drives the elastic wall (24) to elastically deform and drive the valve rod (21) to move, so as to open or close the valve opening (22). By means of the valve assembly, the valve opening (22) can be opened and closed in multiple manners.

Description

Valve assembly and cooking appliance

Technical field

The present application relates to a valve assembly and a cooking appliance having a valve assembly.

Background technique

In the existing cooking utensils such as rice cookers, in order to improve the cooking effect of the rice cooker, there has been a rice cooker that utilizes the phenomenon of "bumping" to achieve uniform cooking. Specifically, the lid of the rice cooker is provided with a pressure valve, and the valve chamber of the pressure valve communicates with the outside and has a valve port communicating with the inside of the pot body, and a sealing member capable of sealing the valve port is disposed in the valve chamber. And the seal can move in the valve cavity, use the pressure inside the pot to open the seal, open the valve port to achieve "collapse" phenomenon.

However, only this way to achieve the opening and closing of the valve port, the control method is relatively simple.

Summary of the invention

The primary object of the present application is to propose a valve assembly that is intended to provide a new control structure to effect opening and closing of the valve port in a variety of manners.

To achieve the above object, the valve assembly proposed by the present application includes:

a pressure valve having a valve chamber and a valve stem disposed in the valve chamber, communicating with the outside and having a valve port, the valve stem having a sealing end that is sealingly fitted with the valve port and opposite to the sealing end a driving end, the valve stem is movable in the valve cavity, and a cavity wall of the valve cavity includes an elastically deformable elastic wall disposed corresponding to the driving end of the valve stem;

The driving device is disposed outside the valve chamber and includes a piston rod. The front end of the piston rod is disposed corresponding to the outer wall of the elastic wall, so that the piston rod elastically deforms the elastic wall and drives the valve stem to move. To open or close the valve port.

The technical solution of the present application provides a resiliently deformable elastic wall disposed corresponding to the driving end of the valve stem through the chamber wall of the valve body of the valve, and the front end of the piston rod in the driving device is disposed corresponding to the outer wall of the elastic wall, so that when the driving source is When the piston rod is linearly reciprocated, the front end of the piston rod can elastically deform the elastic wall, and the elastic deformation of the elastic wall can abut against the driving end of the valve stem to drive the valve stem to open or close the valve port. Thus, when the valve assembly is applied to a cooking appliance such as a rice cooker, the pressure value of the valve stem sealing valve port can be adjusted by adjusting the movement of the piston rod, thereby realizing different pressure values (with a moderate pressure range). The pressure inside the rice cooker pot opens the valve stem to achieve the desired cooking effect, such as "collapse" at different pressure values; and, the piston rod can be first applied with a large force on the valve stem. The valve stem is tightly sealed, and then the valve stem is opened by lowering the pressure of the piston rod against the valve stem. That is, the valve assembly of the present application can realize the opening and closing of the valve port in various ways.

DRAWINGS

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings to be used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present application, and other drawings can be obtained according to the structures shown in the drawings without any creative work for those skilled in the art.

Figure 1 is a schematic view showing the structure of a cover body in the cooking appliance of the present application;

Figure 2 is a partial enlarged view of a portion A in Figure 1;

Figure 3 is a schematic structural view of a portion of a driving device in a cover of a cooking appliance of the present application;

4 is a schematic structural view of a lever according to an embodiment of the present application;

Figure 5 is a schematic view showing the structure of Figure 3 in another orientation;

Figure 6 is a partial enlarged view of a portion B in Figure 5;

Figure 7 is a schematic view showing another state of Figure 6;

Figure 8 is a schematic plan view of the top view of Figure 5;

Figure 9 is a partial enlarged view of a portion C in Figure 8;

10 is a schematic structural view of a pressure valve in a closed state according to an embodiment of the present application;

Figure 11 is a partial enlarged view of the portion D in Figure 10;

Figure 12 is a bottom plan view of the pressure regulating valve cover of Figure 10;

Figure 13 is a side elevational cross-sectional view of the pressure regulating valve cover of Figure 10;

Figure 14 is a perspective view showing the structure of the pressure regulating valve pressing rod of Figure 10.

Description of the reference numerals:

Cover body-10 valve chamber-20 valve stem-21 valve port-22 piston rod-60 lever-3 motor-40a bracket-30a Sealed end -211 Drive end -212 Elastic wall-24 Moving gear -41a First raised -201 Second raised -202 Limited raised -63 Positioned through slot -301 First support plate -31 Second support plate -32 First hole -311 Second strip hole -321 Connecting plate -33 Retaining notch -331 Rotary shaft -21a Vertical plate - 30 Mounting hole -31a Opening -32a Flared section -33a Limiting band -40 Reinforcement -41 Retaining ribs -42 Connecting ribs -43 Inner cover -600 Pressure regulating valve cover -100 Pressure regulating valve lever -200 Pressure regulating valve core -300 Pressure regulating spring seat -310 Spring-320 Elastic Pad-330 Pressure Regulating Spring Rod-312 Base-311a Connecting Edge-313a Outer Side Wall-210 Limiting Wall-220 Guide Bar-410 Guide Groove-420 Mounting end -411 connecting slot -331a making hole -120 slot -421

The implementation, functional features and advantages of the present application will be further described with reference to the accompanying drawings.

detailed description

The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the drawings in the embodiments of the present application. It is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

It should be noted that, if there is a directional indication (such as up, down, left, right, front, back, ...) in the embodiment of the present application, the directional indication is only used to explain in a certain posture (as shown in the drawing) The relative positional relationship between the components, the motion situation, and the like, if the specific posture changes, the directional indication also changes accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is used for descriptive purposes only, and is not to be construed as an Its relative importance or implicit indication of the number of technical features indicated. Thus, features defining "first" or "second" may include at least one of the features, either explicitly or implicitly. In addition, the technical solutions between the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist. Nor is it within the scope of protection required by this application.

As shown in FIG. 1 to FIG. 3, the valve assembly is located on the cover 10 of the cooking appliance, and includes:

The pressure valve has a valve chamber 20 and a valve stem 21 disposed in the valve chamber 20, communicates with the outside and has a valve port 22 having a sealing end 211 that is sealingly fitted with the valve port 22 and opposite to the sealing end 211 The driving end 212, the valve stem 21 can move in the valve cavity 20, the cavity wall of the valve cavity 20 includes an elastically deformable elastic wall 24 corresponding to the driving end 212 of the valve stem 21;

The driving device is disposed outside the valve chamber 20, and includes a piston rod 60. The front end 62 of the piston rod 60 is disposed corresponding to the outer wall of the elastic wall 24, so that the piston rod 60 elastically deforms the elastic wall 24 and drives the valve stem 21 to move. Open or close the valve port 22.

The technical solution of the present application provides an elastically deformable elastic wall 24 corresponding to the driving end 212 of the valve stem 21 by providing a cavity wall of the valve body 20 of the pressure valve, and the front end 62 of the piston rod 60 in the driving device is disposed corresponding to the outer wall of the elastic wall 24. Thus, when the driving source drives the piston rod 60 to reciprocate, the front end 62 of the piston rod 60 can elastically deform the elastic wall 24, and the elastic deformation of the elastic wall 24 can abut against the driving end 212 of the valve stem 21, thereby driving The valve stem 21 is moved to open or close the valve port 22. Thus, when the valve assembly is applied to the rice cooker, the valve port 22 communicates with the pot body, and the movement of the piston rod 60 can be adjusted to adjust whether the valve stem 21 seals the valve port 22, or when the valve port 22 is closed and opened. Thereby achieving the desired cooking effect, such as opening the valve port 22 at different pressure values to achieve a "collapse" phenomenon; moreover, the piston rod 60 can first be applied with a large force on the valve stem 21 to cause the valve stem The purpose of opening the valve port 22 is achieved by firmly sealing the valve port 22 and then reducing the pressure of the valve stem 21 by the piston rod 60. That is, the valve assembly of the present application can realize the opening and closing of the valve port 22 in various ways.

As shown in FIG. 3, the piston rod 60 is provided with a limiting protrusion 63 extending along the moving direction of the vertical piston rod 60. The bracket 30a is provided with a limiting through slot 301 for receiving the piston rod 60, and the limiting through slot 301 The axial direction coincides with the direction of movement of the piston rod 60. As such, the limit ribs can limit the problem of the rotation of the piston rod 60 in the limit through groove 301. Of course, in other embodiments of the present application, the piston rod 60 may also be provided with an angular structure to prevent the rotation of the piston rod 60.

As shown in FIG. 3 and FIG. 4, the piston rod 60 is connected to the lever 3, and one end of the lever 3 is spaced apart from the first support plate 31 and the second support plate 32, and the first support plate 31 and the The second supporting plate 32 is correspondingly provided with a first strip hole 311 and a second strip hole 321 , wherein the length of the first strip hole 311 is longer than the length of the second strip hole 321 ;

The piston rod 60 has a first protrusion 201 and a second protrusion 202 protruding toward the two sides, and the first protrusion 201 and the second protrusion 202 correspond to the first strip hole 311 and the second strip The shaped holes 321 fit.

When the first protrusion 201 and the second protrusion 202 are located between the first strip hole 311 and the second strip hole 321 during installation, after the piston rod 60 rotates, the first A protrusion 201 and a second protrusion 202 can simultaneously enter the first strip hole 311 and the second strip hole 321 .

Specifically, in the embodiment, the piston rod 60 is a “T”-shaped structure, and the tail portion of the “T”-shaped structure is the first protrusion 201 and the second protrusion 202. A protrusion 201 and the second protrusion 202 are respectively disposed in the first strip hole 311 and the second strip hole 321 so that the lever 3 can move the piston rod 60 during movement. In order to achieve the purpose of adjusting the threshold of the cooking appliance pressure valve.

In the installation stage, the first protrusion 201 enters the first strip hole 311 from one end of the first strip hole 311, and the second protrusion 202 enters from the other end of the first strip hole 311. a second strip-shaped hole 321 for easily placing the first protrusion 201 and the second protrusion 202 into the first strip hole 311 and the second strip hole 321 respectively, reducing the piston rod 60 The installation difficulty is increased, and the production efficiency is improved. At the same time, because the second strip hole 321 is short in the embodiment, the movement space of the second protrusion 202 in the second strip hole 321 is limited. By the action of the restraint, the stability of the piston rod 60 of the cooking appliance during operation is increased.

In an embodiment of the present application, the length of the first protrusion 201 is greater than the length of the second protrusion 202. In the embodiment, the length of the first protrusion 201 is greater than the length of the second protrusion 202, so that when the longer first protrusion 201 moves in the longer first strip hole 311, it is not easy to The first shape hole 311 is detached, so that the piston rod 60 moves more smoothly and reliably, further increasing the stability during operation.

Referring to FIG. 4 , the first support plate 31 and the second support plate 32 are away from the end of the lever 3 and connected by the connecting plate 33 .

In the present embodiment, the structure of the first support plate 31 and the second support plate 32 is made more secure by providing the connecting plate 33 between the first support plate 31 and the second support plate 32. The elastic deformation and vibration are less likely to occur, which further increases the stability of the piston rod connecting structure during operation.

In addition, in an embodiment of the present application, the connecting plate 33 is provided with a yield gap 331. In the present embodiment, by providing the retaining notch 331 in the connecting plate 33, the retaining notch 331 can be utilized from the first strip hole 311 and the second strip hole 321 during installation and disassembly. The first protrusion 201 and the second protrusion 202 are placed or taken out, which further reduces the installation difficulty of the piston rod 60 and improves the production efficiency.

In addition, as shown in FIG. 5 to FIG. 9, the valve assembly further includes a bracket 30a, and the lever 3 is disposed on the bracket 30a. The bracket 30a is provided with an upwardly extending vertical plate on opposite sides of the width direction thereof. 30, wherein the two vertical plates 30 are correspondingly provided with mounting holes at opposite positions; the lever 3 is located between the two vertical plates 30, and the rotating shaft 21a is convexly disposed at a position corresponding to the mounting hole, wherein the rotating shaft 21a is engaged with the mounting hole so that both ends of the lever 3 in the longitudinal direction of the bracket 30a can swing up and down about the rotating shaft 21a; wherein, as shown in FIG. 9, the vertical plate 30 is disposed at a position between the lever 3 and the lever 3 The rib 40 is limited to restrict the swing lever 3 from swinging in the width direction of the bracket 30a.

Specifically, in the present embodiment, the longitudinal direction of the bracket 30a is the left-right direction of the coordinates in FIG. 5, and the width direction of the bracket 30a is the front-rear direction of the coordinates in FIG. The vertical plate 30 is protruded from both sides of the upper surface of the bracket 30a in the front-rear direction, and is integrally provided with the bracket 30a. The lever 3 is rotatably disposed on the vertical plate 30 through the cooperation of the rotating shaft 21a and the mounting hole, and the left and right of the lever 3 Both ends can swing up and down around the rotating shaft 21a. As shown in FIG. 9, there is a certain gap between the vertical plate 30 and the lever 3, and the limiting rib 40 is disposed at a position opposite to the lever 3 on the vertical plate 30, so that the lever 3 swings up and down. During the process, the limiting ribs 40 abut against the front and rear sides of the lever 3, so that the lever 3 does not have too much swaying space in the front-rear direction, thereby effectively preventing the swaying of the lever 3 in the front-rear direction.

Further, as shown in FIG. 9, the limiting rib 40 includes a elastic rib 41 and a rib 42. One end of the elastic rib 41 is connected to the vertical plate 30, and the other end of the elastic rib 41 is connected to the upper end of the rib 42 and the rib 42 is connected. Close to the pull rod. The elastic ribs 41 may be straight or curved. In the present embodiment, the elastic ribs 41 are straight and are inclined downwardly to provide better elastic properties. During the swinging of the lever 3 up and down, the lever 3 continuously strikes the retaining rib 42, and the elastic rib 41 can be cushioned and deformed, absorbing the impact force of the lever 3, avoiding damage to the upright plate 30, and facilitating the lever 3 The swing.

In the preferred embodiment, in the vertical direction, the upper end of the rib 42 is higher than the center of gravity of the lever 3, and the lower end of the rib 42 extends downward to the bottom of the lever 3. This arrangement not only ensures a sufficiently large contact surface of the rib 42 and the lever 3, but also further enhances the stability of the lever 3 when it is swung up and down.

As shown in FIG. 9, the limiting rib 40 includes a connecting rib 43 which is located at the bottom of the lever 3, wherein the two ends of the connecting rib 43 are respectively connected to the lower ends of the two ribs 42. This arrangement further enhances the stability of the limit rib 40, and ensures that the up and down swing of the lever 3 is more stable.

Specifically, the bracket 30a, the vertical plate 30, and the limiting rib 40 are integrally disposed. This facilitates fabrication and enhances the overall strength of the bracket 30a0.

As shown in FIG. 5, in the longitudinal direction of the bracket 30a, the mounting hole is located on one side of the vertical plate 30, and the limiting rib 40 is located on the other side of the vertical plate 30 with respect to the mounting hole. When swinging on the lever 3, the rotating shaft 21a also plays a certain fixed role on the left and right sway of the lever 3, and the mounting hole and the limiting rib 40 are disposed on both sides of the vertical plate 30 in the left-right direction, so that the lever 3 can be The left and right sides of the vertical plate 30 are relatively evenly stressed, which is convenient for the vertical movement of the lever 3 up and down.

Further, as shown in FIGS. 5 to 7, the lever 3 is disposed on the bracket 30a and is drivingly coupled to the movable gear 41a. The movable gear 41a is fixed on the bracket 30a on the side of the serrated end of the lever 3, and the movable gear 41a is engaged with the serrated end of the lever 3 to drive the lever 3 to swing up and down; wherein the vertical plate 30 is disposed on the side close to the serrated end A mounting hole 31a communicates with the opening 32a, and the rotating shaft 21a is fitted into the mounting hole 31a through the opening 32a.

Specifically, in the present embodiment, the left end of the bracket 30a is further fixed with a movable gear 41a, which can be rotated by the motor 40a, and the zigzag end of the movable gear 41a and the lever 3 (ie, the left end of the pull rod) The engagement is set such that the lever 3 can be oscillated up and down about the rotation shaft 21a under the driving of the movable gear 41a. Among them, the lever 3 does not rotate 360° in the vertical direction (ie, the up and down direction), but oscillates within a certain range. In order to facilitate the mounting of the lever 3, an opening 32a communicating with the mounting hole 31a is formed on the left side of the vertical plate 30, so that the rotating shaft 21a can be fitted into the mounting hole 31a through the opening 32a, and since the moving gear 41a is located The left side of the serrated end of the lever 3, and the opening 32a is also disposed on the left side of the vertical plate 30. Since the movable gear 41a is engaged with the serrated end of the lever 3, the lever 3 cannot be moved to the left side, such that the moving gear 41a is equivalent to stabilizing the rotation shaft 21a of the lever 3 in the mounting hole 31a so that the rotation shaft 21a cannot be released from the opening 32a. With such an arrangement, the lever 3 can be stably rotated about the mounting hole 31a, so that the upper and lower ends of the lever 3 are stably oscillated up and down.

As shown in Fig. 7, the mounting hole 31a is provided close to the opening 32a. This avoids the excessive distance between the opening 32a and the mounting hole 31a, reduces the strength of the vertical plate 30, and is also disadvantageous for the mounting of the rotating shaft 21a.

In addition, a flared section 33a is provided between the opening 32a and the mounting hole 31a, and the flared section 33a is formed in a bell mouth shape, wherein the flared section 33a is contracted toward the mounting hole 31a. Thus, the flared section 33a is enlarged toward the left side and relatively large at the opening 32a to facilitate the mounting of the rotary shaft 21a.

In a preferred embodiment, the center of the opening 32a and the center of the mounting hole 31a are at the same horizontal position. Thus, the flared portion 33a is not curved, which facilitates the attachment of the rotating shaft 21a, and makes the rotating shaft 21a enter the mounting hole 31a more smoothly.

Further, the connection between the mounting hole 31a and the flared section 33a is interference-fitted with the rotating shaft. The width at the junction of the flared portion 33a and the mounting hole 31a is slightly smaller than the diameter of the rotating shaft 21a, so that when the rotating shaft 21a enters the mounting hole 31a, it can be made more difficult to escape the mounting hole 31a.

As shown in FIG. 7, the side wall of the flared section 33a is provided in a rounded curved surface. This arrangement is smoother in that the shaft 21a is fitted into the mounting hole 31a to avoid interference during installation.

As shown in Fig. 6, the rotating shaft 21a protrudes from the mounting hole 31a. The length of the rotating shaft 21a is larger than the thickness of the vertical plate 30, so that the two rotating shafts 21a respectively protrude from the mounting hole 31a in the front-rear direction, so that the rotating shaft 21a is more stable when rotated in the mounting hole 31a, so that the rotating shaft does not easily come out of the mounting hole 31a.

Preferably, as shown in FIG. 5, the mounting hole 31a is adjacent to the serrated end of the lever 3. In this embodiment, by such arrangement, the distance between the serrated end (ie, the left end) of the lever 3 and the mounting hole 31a is relatively smaller than the distance between the right end of the lever 3 and the mounting hole 31a, so that the motor 40a drives the lever 3 After the serrated end moves a small distance in the up and down direction, the left end of the lever 3 is relatively moved by a large distance, so that the motor 40a can better control the right end of the lever 3.

Further, referring to FIG. 10 and FIG. 11, the valve chamber 20 is formed by a pressure regulating valve cover 100, and the pressure valve further includes a guiding mechanism including a matching guiding rib 410 and a guiding groove extending in the up and down direction. 420, the guiding rib 410 is disposed on the pressure regulating valve cover 100, the guiding groove 420 is disposed on the valve stem 21, or the guiding rib 410 is disposed on the valve stem 21, and the guiding groove 420 is disposed on the pressure regulating valve cover 100.

The guiding rib 410 and the guiding groove 420 extend in the up and down direction, and the guiding rib 410 and the guiding groove 420 cooperate to define the valve rod 21 to move in the up and down direction with respect to the pressure regulating valve cover 100, thereby avoiding the rotation of the valve stem 21 in the horizontal plane, and simultaneously The inclination of the valve stem 21 relative to the horizontal plane is avoided, so that the valve stem 21 accurately controls the opening and closing of the pressure regulating valve, thereby improving the reliability of the pressure regulating valve.

Specifically, in the cooking appliance, the valve port 22 is disposed on the inner cover 600 of the bracket 30a, and the pressure regulating valve is disposed at the valve port 22 for adjusting the internal pressure of the cooking appliance. The cooking appliance is provided with a pressure driving mechanism controlled by the control panel, and a certain pressure is applied to the pressure regulating valve through the pressure driving mechanism according to the set program, thereby forming different internal pressures inside the cooking appliance. When the pressure regulating valve is in the closed state, the internal pressure of the cooking appliance is stronger than the atmospheric pressure of the outside to increase the boiling point of the water, and the food is cooked more efficiently; and when the pressure of the internal gas of the cooking appliance against the pressure regulating valve exceeds the pressure driving When the pressure is applied by the mechanism, the pressure regulating valve is opened, and the internal pressure is rapidly reduced. On the one hand, the safety is ensured, and the internal and external pressure difference is prevented from being excessively exploded, and on the other hand, the food is tumbling when the water suddenly boils, so that Cooking is more uniform, which improves cooking.

Wherein, the pressure regulating valve cover 100 is disposed above the valve port 22 of the cooking appliance, and the cover body of the pressure regulating valve cover 100 is provided with a pressure relief hole, and when the pressure regulating valve is opened, the gas is discharged from the pressure relief hole. The pressure relief hole can be placed on the side of the pressure regulating valve cover. The top surface of the pressure regulating valve cover 100 is further provided with a positioning hole 120 through which the pressure driving mechanism of the cooking appliance abuts against the top surface of the valve stem 21 provided inside the pressure regulating valve cover 100 to control cooking. The internal pressure of the appliance is also facilitated by the placement hole 120 during assembly to improve assembly efficiency. When the pressure of the internal gas of the cooking appliance to the pressure regulating valve is greater than the pressure of the pressure driving mechanism to the pressure regulating valve pressure rod, the pressure regulating valve is opened, and the internal high pressure steam is sprayed from the valve port 22, so that the internal pressure is lowered; When the pressure of the internal gas to the pressure regulating valve is less than the pressure of the pressure driving mechanism to the pressure regulating valve pressure rod, the pressure regulating valve is closed.

Further, at least two guiding ribs 410 are uniformly distributed on the pressure regulating valve cover 100, and at least two guiding grooves 420 are evenly distributed on the valve stem 21; or at least two guiding ribs are uniformly distributed on the pressure regulating valve pressing rod, at least two guiding grooves Evenly distributed on the pressure regulating valve cover. In the present embodiment, as shown in FIG. 12, three sets of guide ribs 410 and guide grooves 420 are uniformly disposed along the circumference of the pressure regulating valve cover 100 and the valve stem 21, and the pressure driving mechanism abuts against the top surface of the valve stem 21 When pressure is applied thereto, the uniformly distributed guide ribs 410 and the guide grooves 420 ensure the balance of the movement of the valve stem 21 in the up and down direction, and the rotation of the valve stem 21 in the horizontal plane and the inclination of the horizontal plane are better avoided.

In this embodiment, as shown in FIGS. 12 and 13, the mounting end 411 of the guide rib 410 is tapered. The mounting end 411 of the guiding rib 410 is one end of the guiding rib 410 and the guiding groove 420 which first protrudes into the guiding groove 420 during assembly. In the present embodiment, the mounting end 411 is the lower end of the guiding rib 410. If the guiding groove 420 is disposed on the pressure regulating valve cover 100 and the guiding rib 410 is disposed on the valve stem 21, the mounting end 411 is the upper end of the guiding rib 410. The tapered mounting end 411 serves as a guide during assembly of the guide rib 410 and the guide groove 420 to reduce assembly difficulty. Moreover, in the present embodiment, the mounting end 411 is located below the guiding rib 410. When the air bubbles generated in the cooking appliance encounter the guiding rib 410, the tapered lower end is sharper, which is advantageous for piercing the air bubble more efficiently.

Further, as shown in FIG. 13 , the side of the mounting end 411 adjacent to the guiding slot 420 is consistent with the extending direction of the guiding slot 420 , and the side of the mounting end 411 away from the guiding slot 420 is tapered toward the guiding slot 420 . When the rod 21 moves up and down with respect to the pressure regulating valve cover 100, the side of the guide rib 410 near the guide groove 420 always keeps extending in the up and down direction to avoid the inclination of the valve stem 21 caused by the inclination of the guide rib 410 in the guide groove 420.

In this embodiment, as shown in FIG. 14, the notch 421 of the guiding groove 420 is gradually expanded, and plays a guiding role in the assembly process of the pressure regulating valve, so that the guiding rib 410 is more easily accommodated in the guiding groove 420. To reduce the difficulty of assembly.

In the present embodiment, as shown in FIG. 11, the lower end of the guide rib 410 is disposed beyond the guide groove 420. When the bubble generated by the boiling of the water inside the cooking appliance floats up to the convex portion of the guiding rib 410, it will be pierced by the lower end of the guiding rib 410, thereby breaking the bubble and reducing the overflow of the food. It should be noted that if the guiding rib 410 is disposed on the valve stem 21, the guiding groove 420 is disposed on the pressure regulating valve cover, and the guiding rib 410 may also protrude from the lower end of the valve stem 21 and beyond the guiding groove 420.

In an embodiment of the present application, as shown in FIG. 11, the valve stem 21 of the pressure valve further includes a pressure regulating valve core 300 and a pressure regulating valve pressure rod 200, and the pressure regulating valve core 300 is disposed inside the pressure regulating valve cover 100. The pressure regulating valve core 300 is movably connected to the lower side of the pressure regulating valve pressure bar 200 to control the opening and closing of the pressure regulating hole of the cooking appliance. The guiding rib 410 or the guiding groove 420 is disposed on the pressure regulating valve pressing rod 200.

The pressure regulating valve core 300 has various arrangements. In this embodiment, the pressure regulating valve core 300 includes a pressure regulating spring seat 310, a spring 320 and an elastic pad 330. The pressure regulating spring seat 310 includes a base 311a and a pressure regulating spring rod 312 protruding upward from the base 311a, and the pressure regulating spring seat 310 is disposed under the valve stem 21; the spring 320 is sleeved on the pressure regulating spring rod 312, the upper end of the spring 320 is connected to the valve stem 21, the lower end of the spring 320 is connected to the base 311a; and the elastic pad 330 is connected to the pressure regulating spring seat. Below the base 311a. Specifically, the pressure regulating valve pressing rod 200 includes a downwardly extending outer side wall 210, and a limiting wall 220 is disposed on an inner side of the outer side wall 210.

In this embodiment, the upper edge of the elastic pad 330 is provided with a connecting groove 331a. The lower side of the base 311a is provided with a connecting edge 313a. The connecting edge 313a is fastened in the connecting groove 331a to fix the elastic pad 330. The lower end of the spring seat 310. The elastic pad 330 can be made of silica gel, which has good high temperature resistance and elasticity. The longitudinal section of the elastic pad 330 is vertically and narrowly arranged in the vertical direction to better match the diameter of the valve port 22, thereby improving the airtightness of the pressure regulating valve and preventing air leakage.

The present application also provides a cooking appliance comprising a valve assembly. The specific structure of the valve assembly is referred to the above embodiment. Since the cooking appliance adopts all the technical solutions of all the above embodiments, at least the technology of the above embodiment is adopted. All the benefits brought by the program will not be repeated here.

Among them, the cooking utensils may be rice cookers, electric pressure cookers, and the like.

The above is only a preferred embodiment of the present application, and is not intended to limit the scope of the patents of the present application, and the equivalent structural transformations made by the present application and the contents of the drawings, or directly/indirectly The relevant technical fields are all included in the patent protection scope of the present application.

Claims

A valve assembly, comprising:

a pressure valve having a valve chamber and a valve stem disposed in the valve chamber, communicating with the outside and having a valve port, the valve stem having a sealing end that is sealingly fitted with the valve port and opposite to the sealing end a driving end, the valve stem is movable in the valve cavity, and a cavity wall of the valve cavity includes an elastically deformable elastic wall disposed corresponding to the driving end of the valve stem;

The driving device is disposed outside the valve chamber and includes a piston rod. The front end of the piston rod is disposed corresponding to the outer wall of the elastic wall, so that the piston rod elastically deforms the elastic wall and drives the valve stem to move. To open or close the valve port.
The valve assembly of claim 1 wherein said piston rod is coupled to a shift lever, wherein:

a first support plate and a second support plate are disposed at one end of the first lever, and a first strip hole and a second strip hole are correspondingly disposed on the first support plate and the second support plate, wherein The length of the first strip hole is longer than the length of the second strip hole;

The piston rod has a first protrusion and a second protrusion protruding toward the two sides, and the first protrusion and the second protrusion cooperate with the first strip hole and the second strip hole.
The valve assembly of claim 2 wherein said first projection has a length greater than a length of said second projection.
A valve assembly according to claim 2, wherein said first support plate and said second support plate are remote from the end of said lever and are connected by a connecting plate.
The valve assembly of claim 4 wherein said web is provided with a recess.
The valve assembly of claim 1 wherein said piston rod is coupled to a lever and said lever is disposed on the bracket, wherein:

The brackets are respectively provided with upwardly extending vertical plates on opposite sides of the width direction thereof, wherein the two vertical plates are correspondingly provided with mounting holes at opposite positions;

The pulling rod is located between the two vertical plates, and the rotating rod protrudes from the mounting hole with a rotating shaft, and the rotating shaft cooperates with the mounting hole, so that the pulling rod is in the Both ends of the bracket in the longitudinal direction can swing up and down around the rotating shaft;

The vertical plate is provided with a limiting rib at a position between the pulling rod to restrict the pulling rod from swinging in the width direction of the bracket.
A valve assembly according to claim 6, wherein said retaining rib includes a resilient rib and a retaining rib, one end of said resilient rib is coupled to said riser, and the other end of said resilient rib is said to extend The upper ends of the ribs are connected, and the ribs are adjacent to the pull rods.
The valve assembly according to claim 7, wherein an upper end of said retaining rib is higher than a center of gravity of said drawbar, and a lower end of said retaining rib extends downward to a bottom of said drawbar.
The valve assembly according to claim 8, wherein said limiting rib further comprises a connecting rib, said connecting rib is located at the bottom of said pulling rod, and said two ends of said connecting rib are respectively said The lower end of the rib is connected.
The valve assembly according to claim 6, wherein said bracket, said riser, and the limiting rib are integrally disposed.
A valve assembly according to claim 6, wherein said mounting hole is located at one side of said vertical plate in a longitudinal direction of said bracket, said limiting rib being located on said vertical plate relative to said The other side of the mounting hole.
The valve assembly of claim 1 wherein said piston rod is coupled to a lever, said lever being disposed on the bracket and drivingly coupled to the moving gear, wherein:

The brackets are respectively provided with upwardly extending vertical plates on opposite sides of the width direction thereof, wherein the two vertical plates are correspondingly provided with mounting holes at opposite positions;

The pulling rod is located between the two vertical plates, and the rotating rod has a rotating shaft adapted to the mounting hole at a position corresponding to the mounting hole, and the pulling rod is at the length of the bracket One end of the direction is arranged in a zigzag manner in the vertical direction. When the rotating shaft is located in the mounting hole, the two ends of the pulling rod in the longitudinal direction of the bracket can swing up and down around the rotating shaft;

The movable gear is fixed to a side of the bracket adjacent to the serrated end of the pulling rod in a longitudinal direction thereof, and the movable gear is engaged with the serrated end to drive the pulling rod to swing up and down;

The side of the vertical plate adjacent to the serrated end is provided with an opening that communicates with the mounting hole, and the rotating shaft is installed into the mounting hole through the opening.
The valve assembly of claim 12 wherein said mounting aperture is disposed adjacent said opening.
The valve assembly according to claim 13, wherein a flared section is disposed between the opening and the mounting hole, the flared section is formed in a bell mouth shape, and the flared section faces the The mounting holes are shrinking.
The valve assembly of claim 1 wherein said valve chamber is formed by a pressure regulating valve cover, said pressure valve further comprising:

a guiding mechanism comprising a matching guiding rib and a guiding groove extending in an up-and-down direction, the guiding rib being disposed on the pressure regulating valve cover, the guiding groove being disposed on the valve stem, or the guiding rib The guide groove is disposed on the valve stem, and the guide groove is disposed on the pressure regulating valve cover.
The valve assembly according to claim 15, wherein at least two of the guide ribs are evenly distributed on the pressure regulating valve cover, and at least two of the guiding grooves are evenly distributed on the valve stem; or

At least two of the guiding ribs are evenly distributed on the valve stem, and at least two of the guiding grooves are evenly distributed on the pressure regulating valve cover.
The valve assembly of claim 15 wherein the mounting end of the guide rib is tapered.
The valve assembly according to claim 17, wherein a side of the mounting end adjacent to the guiding groove coincides with an extending direction of the guiding groove, and the mounting end is closer to a side away from the guiding groove The direction of the guide groove is tapered.
A cooking appliance comprising the valve assembly of claim 1.
A cooking appliance according to claim 19, wherein the cooking appliance is a rice cooker or an electric pressure cooker.