CN212928785U

CN212928785U - Water drain valve for steaming and baking oven

Info

Publication number: CN212928785U
Application number: CN202021146582.1U
Authority: CN
Inventors: 常锁奎; 李明学; 邓嘉宁
Original assignee: Jiangmen Yinhao Electrical Appliances Co ltd
Current assignee: Jiangmen Yinhao Electrical Appliances Co ltd
Priority date: 2020-06-18
Filing date: 2020-06-18
Publication date: 2021-04-09
Anticipated expiration: 2030-06-18

Abstract

The utility model discloses a drain valve for a steaming and baking oven, which comprises a valve body, a valve cover, a valve plate, a valve core shaft, a shaft sleeve, a compression spring and a coil assembly, wherein a valve cavity is arranged in the valve body, the valve cavity is provided with a water inlet and a water outlet, the valve cover is arranged on the valve body, the valve cavity is provided with a sealing port matched with the valve plate, the valve plate is movably arranged in the valve cavity and is right opposite to the sealing port, the valve core shaft is connected at one end of the valve plate far away from the sealing port, the valve core shaft passes through the valve cover and is in sliding connection with a sleeve hole of the shaft sleeve, the compression spring capable of sealing the valve plate on the sealing port; wherein, the sealing surface of the valve plate is a convex spherical surface, and the sealing surface of the sealing port is a concave annular spherical surface. Adopt the utility model discloses, can make the contact surface between valve plate and the sealed port reduce greatly, realize that line contact is sealed, have simple structure, sealed reliable advantage.

Description

Water drain valve for steaming and baking oven

Technical Field

The utility model belongs to the technical field of the water valve, especially, relate to a valve that drains for steaming and baking oven.

Background

Compared with the traditional water-proof steaming and pressure-cooker steaming, the steaming and baking integrated box is not afraid of a dry pot for cooking and the like, and does not need to be watched, and the key technology is to automatically control water inlet and steaming and baking. The direct-acting control water drain valve used for the steaming oven is required to be suitable for the pressure of water inlet pressure less than 150mm water column, the water valve can automatically feed water when being electrified, and seepage and water leakage cannot occur after power failure; but the existing water drain valve has the defect of water leakage; the reason is that the key matched sealing structure of the existing water drain valve is designed to be in contact sealing between an annular plane and a plane, and the sealing planes of a plastic part and a rubber part are difficult to ensure in the processing; the molded part has the defects of uneven plane, concave, convex and the like; in addition, the sealing part is designed to be a plane, and after the valve is used for a period of time, the contact surface is easy to bond, so that the valve is separated in the working process, and the working failure of the water drain valve is caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple structure, sealed reliable a valve that drains for steaming and baking oven.

In order to achieve the purpose, the utility model provides a drain valve for steaming and baking oven, it includes valve body, valve gap, valve plate, valve core axle, axle sleeve, compression spring and coil assembly, be equipped with the valve pocket in the valve body, the valve pocket is equipped with water inlet and delivery port, the valve gap lid is established on the valve body, the valve pocket is formed with the sealed port of valve plate complex, the valve plate movably sets up in the valve pocket and just right with the sealed port, the valve core axle is connected in the valve plate keeps away from the one end of sealed port, the valve core axle passes the valve gap and is connected with the trepanning sliding of axle sleeve, be equipped with between valve core axle and the axle sleeve and seal the compression spring that the valve plate seals on the sealed port, the periphery of axle sleeve links to each other with the coil assembly; the sealing surface of the valve plate is a convex spherical surface, and the sealing surface of the sealing port is a concave annular spherical surface.

As the preferred scheme of the utility model, the radius of curvature of evagination sphere is greater than the radius of curvature of indent annular sphere.

As the preferred scheme of the utility model, the valve gap with junction between the valve body is equipped with the sealing washer.

As the preferred scheme of the utility model, the axle sleeve with valve gap integrated into one piece.

As the preferred scheme of the utility model, the coil assembly comprises a magnetic conduction bracket, a framework and an enameled wire which are arranged in the magnetic conduction bracket, and a positive electrode pin and a negative electrode pin which are respectively connected with the two ends of the enameled wire, the framework is internally provided with a through hole, the upper end and the lower end of the framework are respectively provided with a framework upper flanging and a framework lower flanging in an outward protruding way, the enameled wire is wound on the framework and is positioned between the framework upper flanging and the framework lower flanging, and form a coil module, the magnetic conduction bracket is provided with magnetic conduction frames which are arranged on the top surface, the bottom surface, the left surface and the right surface of the coil module in a surrounding way and a magnetic conduction sleeve which is matched and connected with the through hole, the upper end of the magnetic conduction sleeve is connected with the top surface of the magnetic conduction frame, the lower end of the magnetic conduction sleeve is connected with the bottom surface of the magnetic conduction frame, and the shaft sleeve is inserted in the magnetic conduction sleeve.

As the utility model discloses an optimal scheme, the outside of coil module with the magnetic conduction frame is moulded plastics and is encapsulated in an organic whole, anodal pin and negative pole pin stretch out outside the encapsulation plastics.

Implement the utility model provides a pair of a valve that drains for steaming and baking oven compares with prior art, and its beneficial effect lies in:

(1) the utility model designs the sealing surface of the valve plate into an outer convex spherical surface and the sealing surface of the sealing port into an inner concave annular spherical surface, so that the contact surface between the valve plate and the sealing port is greatly reduced, thereby realizing line contact sealing, increasing the pressure intensity at the contact position and ensuring reliable sealing performance;

(2) the valve is designed to be in line contact sealing, so that foreign matters in an aqueous medium are not easily adhered to a sealing contact surface, the valve plate is prevented from being separated from a sealing port due to the existence of the foreign matters, and the problem of plane contact sealing water leakage of the existing product is effectively solved; the pressure intensity of the line contact seal is higher than that of the plane contact seal under the same pressure, so that the deformation compensation effect on the tiny defects at the sealing contact position can be realized, and the sealing effectiveness is ensured;

(3) under the condition of small water pressure, the requirement of the linear contact seal on the manufacturing precision of parts is lower than that of the plane contact seal, and the parts are easy to manufacture;

(4) the valve is designed to be in line contact sealing, the diameter of the valve plate is reduced to phi 9mm from original phi 15mm, and the starting voltage of the water drain valve can be effectively reduced; under the condition of the same starting voltage, the design of the compression spring can increase the spring force by about 10g, the opening and closing functions of the water drain valve are the same, but the sealing effect is obviously improved because the compression force of the spring is increased.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.

Fig. 1 is an exploded view of a drain valve for a steaming oven provided by the present invention;

FIG. 2 is a cross-sectional view of the structure of FIG. 1 after assembly;

FIG. 3 is a schematic view of the structure of the valve plate and seal port;

FIG. 4 is a schematic diagram of a preferred embodiment of a coil assembly.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.

As shown in fig. 1 and fig. 2, a water drain valve for a steam oven according to a preferred embodiment of the present invention includes a valve body 1, a valve cover 2, a valve plate 3, a valve core shaft 4, a shaft sleeve 5, a compression spring 6 and a coil assembly 7, wherein a valve cavity 11 is disposed in the valve body 1, the valve cavity 11 is provided with a water inlet and a water outlet, the valve cover 2 covers the valve body 1, the valve cavity 11 is formed with a sealing port 12 matching with the valve plate 3, the valve plate 3 is movably disposed in the valve cavity and directly faces the sealing port 12, the valve core shaft 4 is connected to one end of the valve plate 3 away from the sealing port 12, the valve core shaft 4 passes through the valve cover 2 and is slidably connected with the shaft sleeve 5, the compression spring 6 capable of sealing the valve plate 3 on the sealing port 12 is disposed between the valve core shaft 4 and the shaft sleeve 5, the periphery of the shaft sleeve 5 is connected with the coil assembly 7.

The operation of the water discharge valve is controlled by turning on and off the coil assembly 7.

When the valve is in a non-working state, the coil assembly 7 is in a non-electrified state, the valve plate 3 blocks the sealing port 12 in the valve cavity 11 under the spring force action of the compression spring 6, water flows into the valve cavity 11 through the water inlet to apply pressure to the valve, and the water inlet and outlet passage is closed.

The working state is as follows: the coil assembly 7 is in a power-on state, the coil assembly 7 is powered on to work to generate electromagnetic force and act on the valve core shaft 4, the valve core shaft 4 is made to move by overcoming the spring force of the compression spring 6, the valve plate 3 is driven to be separated from the sealing port 12 in the valve cavity 11, water flows into the valve cavity through the water inlet and flows out of the water outlet through the sealing port 12, and the water drain valve works.

As shown in fig. 3, based on the above-mentioned water drain valve, the embodiment of the present invention is characterized in that: the sealing surface of the valve plate 3 is a convex spherical surface 31, and the sealing surface of the sealing port 12 is a concave annular spherical surface 121. The design has the following advantages that: firstly, the contact surface between the valve plate 3 and the sealing port 12 can be greatly reduced, so that line contact sealing is realized, the pressure intensity at the contact position is increased, and the sealing reliability is ensured; secondly, the valve is designed to be in line contact sealing, so that foreign matters in an aqueous medium are not easy to adhere to a sealing contact surface, the valve plate 3 is prevented from being separated from the sealing port 12 due to the existence of the foreign matters, and the problem of plane contact sealing water leakage of the existing product is effectively solved; the pressure intensity of the line contact seal is higher than that of the plane contact seal under the same pressure, so that the deformation compensation effect on the tiny defects at the sealing contact position can be realized, and the sealing effectiveness is ensured; thirdly, under the condition of small water pressure, the requirement of the linear contact seal on the manufacturing precision of parts is lower than that of the plane contact seal, and the parts are easy to manufacture; finally, the valve is designed to be in line contact sealing, the diameter of the valve plate 3 is reduced to phi 9mm from original phi 15mm, and the starting voltage of the water drain valve can be effectively reduced; under the condition of the same starting voltage, the design of the compression spring 6 can increase the spring force by about 10g, the opening and closing functions of the water drain valve are the same, but the sealing effect is obviously improved because the compression force of the spring is increased.

Further, in order to better realize the line contact sealing, the curvature radius of the convex spherical surface 31 is larger than that of the concave annular spherical surface 121.

Illustratively, a sealing ring 8 is arranged at the joint between the valve cover 2 and the valve body 1 to prevent water leakage outside the water drain valve.

Illustratively, the shaft sleeve 5 and the valve cover 2 are integrally formed, so that the structure is simple and the assembly is convenient.

Exemplarily, as shown in fig. 4, the coil assembly 7 includes a magnetic conductive bracket 71, a skeleton 72 and an enameled wire 73 which are arranged in the magnetic conductive bracket 71, and a positive pin 74 and a negative pin 75 which are respectively connected to two ends of the enameled wire 73, a through hole is arranged in the skeleton 72, a skeleton upper flange and a skeleton lower flange are respectively protruded from the upper end and the lower end of the skeleton 72, the enameled wire 73 is wound on the skeleton 72 and is located between the skeleton upper flange and the skeleton lower flange to form a coil module, the magnetic conductive bracket 71 is provided with a magnetic conductive frame 711 which is surrounded on the top surface, the bottom surface, the left surface and the right surface of the coil module, and a magnetic conductive sleeve 712 which is connected to the through hole in a matching manner, the upper end of the magnetic conductive sleeve 712 is connected to the top surface of the magnetic conductive frame 711, and the lower end of the magnetic conductive sleeve 712 is connected to the bottom surface of the magnetic conductive, the shaft sleeve 5 is inserted into the magnetic conductive sleeve 712. Further, the outside of the coil module and the magnetic conduction frame 711 are molded and encapsulated into a whole, and the positive pin 74 and the negative pin 75 extend out of the encapsulation plastic 76.

Thus, the coil assembly 7 has a significant effect in terms of its design: firstly, the problem that the magnetic conduction bracket 71 of the coil assembly 7 is exposed can be solved, and the anti-rusting effect is achieved; secondly, riveting procedures for assembling the coil assembly 7 can be reduced, and cost is reduced; thirdly, the problem of looseness between the coil module and the magnetic conduction bracket 71 can be solved, so that the coil module and the magnetic conduction bracket form a whole, and the assembly is firm and reliable; finally, based on the coil module and the magnetic conductive bracket 71 which are integrally plastic-packaged, the heat conducting area of the coil assembly 7 after being integrally plastic-packaged is increased and the heat radiating effect is better because the solid is better than the gas in heat conducting performance; because the impedance of the enameled wire 73 per unit area and length is a certain value, the smaller the number of turns of the coil, the larger the current, the higher the power (heat generation) and the higher the temperature rise of the coil, the number of turns and the wire diameter of the coil can be properly reduced and the coil volume can be reduced on the premise that the integrally molded coil assembly 7 has a better heat dissipation effect, so that the original temperature rise effect can be achieved, the material consumption can be reduced, and the raw material cost can be reduced.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A water drain valve for a steaming and baking oven is characterized by comprising a valve body, a valve cover, a valve plate, a valve core shaft, a shaft sleeve, a compression spring and a coil assembly, wherein a valve cavity is arranged in the valve body, the valve cavity is provided with a water inlet and a water outlet, the valve cover is arranged on the valve body, a sealing port matched with the valve plate is formed in the valve cavity, the valve plate is movably arranged in the valve cavity and is opposite to the sealing port, the valve core shaft is connected to one end, far away from the sealing port, of the valve plate, the valve core shaft penetrates through the valve cover to be connected with a sleeve hole of the shaft sleeve in a sliding mode, the compression spring capable of sealing the valve plate on the sealing port is arranged between the valve core shaft and the shaft sleeve, and the periphery of the shaft; the sealing surface of the valve plate is a convex spherical surface, and the sealing surface of the sealing port is a concave annular spherical surface.

2. The water drain valve for a steaming and baking oven as claimed in claim 1, wherein the radius of curvature of the convex spherical surface is larger than the radius of curvature of the concave spherical surface.

3. The water drain valve for the steaming oven as claimed in claim 1, wherein a sealing ring is arranged at the joint between the valve cover and the valve body.

4. The drain valve for a steaming oven as claimed in claim 1, wherein the boss is integrally formed with the valve cover.

5. The drain valve for the steaming oven according to any one of claims 1 to 4, wherein the coil assembly comprises a magnetic conductive bracket, a skeleton and an enameled wire arranged in the magnetic conductive bracket, and a positive pin and a negative pin respectively connected with two ends of the enameled wire, a through hole is arranged in the skeleton, a skeleton upper flange and a skeleton lower flange are respectively protruded at the upper end and the lower end of the skeleton, the enameled wire is wound on the skeleton and positioned between the skeleton upper flange and the skeleton lower flange to form a coil module, the magnetic conductive bracket is provided with a magnetic conductive frame arranged around the top surface, the bottom surface, the left surface and the right surface of the coil module, and a magnetic conductive sleeve cooperatively connected with the through hole, the upper end of the magnetic conductive sleeve is connected with the top surface of the magnetic conductive frame, and the lower end of the magnetic conductive sleeve is connected with the bottom surface of the magnetic conductive frame, the shaft sleeve is inserted in the magnetic conduction sleeve.

6. The water drain valve for the steaming oven as claimed in claim 5, wherein the outside of the coil module and the magnetic conduction frame are molded and encapsulated into a whole, and the positive electrode pin and the negative electrode pin extend out of the encapsulation plastic.