CN107061798B

CN107061798B - Gas valve of gas stove and gas stove

Info

Publication number: CN107061798B
Application number: CN201710213032.3A
Authority: CN
Inventors: 孙飞; 张炳卫; 林海龙
Original assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Guangdong Midea Kitchen Appliances Manufacturing Co Ltd
Priority date: 2017-03-31
Filing date: 2017-03-31
Publication date: 2023-05-30
Anticipated expiration: 2037-03-31
Also published as: CN107061798A

Abstract

The invention discloses a gas valve of a gas stove and the gas stove, wherein the gas valve of the gas stove comprises: a valve body, in which a valve cavity, an air inlet channel and a connecting hole are formed; an inner ring air outlet pipe; the upper end face of the boss is provided with a first channel which extends downwards to be communicated with the inner ring air outlet pipe; a seal and an adjustment valve pin; the end face of the boss, which is far away from the valve body, is provided with a second channel which extends horizontally, and the second channel is intersected with the first channel and penetrates through the wall surface of the valve cavity, which is adjacent to the boss; the sealing piece seals one end of the second channel away from the valve cavity; the adjusting valve bolt is movably arranged in the first channel along the up-down direction so as to adjust the effective flow area of the first channel connected with the second channel. The gas valve processing second channel of the gas stove has small processing distance relative to the required processing distance, saves time, is easier to control the processing precision, and further can reduce the precision control cost of the gas valve of the gas stove.

Description

Gas valve of gas stove and gas stove

Technical Field

The invention relates to the technical field of gas cookers, in particular to a gas valve of a gas cooker and the gas cooker.

Background

The gas valve of the gas stove is used for adjusting the gas outlet quantity of the burner end of the gas stove, thereby achieving the aim of adjusting the firepower. Referring to fig. 1 to 3, the gas valve includes a valve body 10', an inner ring gas outlet pipe 11', an outer ring gas outlet pipe (not shown), a boss 12', a steel ball, and a regulating valve bolt (not shown); wherein, a valve cavity 104', an air inlet channel 105' communicated with the valve cavity 104' and a connecting hole 106' horizontally penetrating from the inner wall surface of the lower part of the valve cavity 104' to the outer wall of the valve body 10' are formed in the valve body 10 '; the inner ring air outlet pipe 11' extends outwards horizontally from the periphery of the outer wall connecting hole 106' of the valve body 10 '; the boss 12' is arranged at the joint of the valve body 10' and the inner ring air outlet pipe 11' and is positioned at the upper side of the inner ring air outlet pipe 11', and the upper end surface of the boss 12' is provided with a first channel 121' which extends downwards to be communicated with the inner ring air outlet pipe 11 '.

However, in the conventional gas valve structure, a second channel 122' is formed on one side of the valve body 10' away from the boss 12', and the second channel 122' penetrates the valve cavity 104', extends into the boss 12' and intersects the first channel 121 '; the steel ball is press-fitted into the end of the second passage 122 'remote from the boss 12'. The regulating valve pin is movably disposed in the first passage 121' in the up-down direction to regulate an effective throttle flow area of the first passage 121' connected to the second passage 122 '.

In the existing gas valve structure, a cutter for drilling the second channel 122' needs to penetrate through the valve hole from one side of the valve body 10' away from the boss 12', so that the feeding amount of the cutter is large during processing, and the precision of one end of the second channel 122' intersecting with the first channel 121' is difficult to ensure; in addition, since the side of the valve body 10 'facing away from the boss 12' is generally in a thin-wall structure, when the second channel 122 'is plugged by using the steel balls, the inner wall surface of the valve cavity 104' is easily deformed, so that the valve body cannot be matched with the corresponding valve core correctly.

Disclosure of Invention

The invention mainly aims to provide a gas valve of a gas stove, and aims to solve the technical problems that the processing difficulty of an inner ring throttling gas outlet structure of the gas valve of the existing gas stove is relatively high, and the precision control cost is high.

In order to achieve the above object, the gas valve of the gas stove provided by the present invention comprises:

the valve body is internally provided with a valve cavity extending along the up-down direction, an air inlet channel communicated with the valve cavity and a connecting hole horizontally penetrating from the inner wall surface of the lower part of the valve cavity to the outer wall of the valve body;

the inner ring air outlet pipe extends outwards horizontally from the periphery of the valve body outer wall connecting hole;

the boss is arranged at the joint of the valve body and the inner ring air outlet pipe and is positioned at the upper side of the inner ring air outlet pipe, and a first channel which extends downwards to be communicated with the inner ring air outlet pipe is formed in the upper end face of the boss;

a seal and an adjustment valve pin; it is characterized in that the method comprises the steps of,

the end face, far away from the valve body, of the boss is provided with a second channel extending horizontally, and the second channel intersects with the first channel and penetrates through to the wall surface, adjacent to the boss, of the valve cavity;

the seal seals an end of the second passage remote from the valve chamber; the adjusting valve bolt is movably arranged in the first channel along the up-down direction so as to adjust the effective flow area of the first channel connected with the second channel.

Preferably, the valve cavity is in an inverted cone shape, and the extending direction of the second channel is perpendicular to the axial direction of the valve cavity; the extending direction of the first channel is perpendicular to the extending direction of the second channel.

Preferably, a first reaming is formed at the joint of the bottom wall surface of the first channel and the bottom wall surface of the second channel, and an inverted conical surface is formed on the inner wall surface of the first reaming and the inner wall surface of the first channel; the lower end of the adjusting valve bolt is in an inverted cone shape, and the taper of the lower end of the adjusting valve bolt is smaller than that of the inverted cone.

Preferably, an internal thread is formed at the joint of the bottom wall surface of the first channel and the bottom wall surface of the second channel, and an external thread matched with the internal thread of the first channel is arranged on the outer wall surface of the regulating valve bolt.

Preferably, a second reaming is arranged at the joint of the first channel and the upper end surface of the boss, and a step surface is formed between the second reaming and the inner wall surface of the first channel;

the outer peripheral surface of the upper end of the regulating valve bolt is provided with an annular groove, and the gas valve further comprises a sealing ring which is embedded in the annular groove and is abutted to the step surface.

Preferably, an annular stepped recess is formed in an end of the second passage remote from the valve body, and the seal is located in the stepped recess.

Preferably, the sealing member is a columnar rivet or steel ball, and the sealing member is in interference fit with the stepped recess.

Preferably, the sealing element is a cylindrical screw, and the annular wall surface of the stepped concave part is provided with internal threads matched with the sealing element.

Preferably, the length of the second channel ranges from 16.5 mm to 17.5mm.

The invention also provides a gas stove, comprising a gas valve of the gas stove, wherein the gas valve of the gas stove comprises:

According to the gas valve of the gas stove, the second channel of the inner ring throttling structure is formed at one end of the boss far away from the valve body and extends to the wall surface of the valve cavity near the boss, namely, the second channel is formed in the boss only, does not need to traverse the valve cavity any more, and a channel is formed at one side of the valve body far away from the boss; accordingly, when the sealing member is installed, the installation position of the sealing member is relatively far away from the inner wall surface of the valve cavity, so that deformation of the inner wall surface of the valve cavity can be avoided. In contrast, the machining distance required for machining the second channel with the structure is small, so that time is saved, machining precision is easier to control, and further, precision control cost of the gas valve of the gas stove can be reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a part of a structure of a gas valve of a conventional gas range;

FIG. 2 is a schematic front view of the structure of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the structure of FIG. 2 along line III-III;

FIG. 4 is a schematic view of an embodiment of a gas valve of a gas range according to the present invention;

FIG. 5 is a schematic view of the connection structure of the valve body, the inner ring air outlet pipe, the outer ring air outlet pipe, the middle ring air outlet pipe and the air inlet pipe in FIG. 4;

FIG. 6 is a schematic front view of the structure of FIG. 5;

FIG. 7 is a schematic cross-sectional view taken along line VII-VII of FIG. 6;

FIG. 8 is a schematic view of a gas valve of the gas range of FIG. 4 at another angle;

FIG. 9 is a schematic top view of a gas valve of the gas cooker of FIG. 4;

FIG. 10 is a schematic cross-sectional view taken along line X-X in FIG. 9;

FIG. 11 is a schematic cross-sectional view taken along line XI-XI in FIG. 9;

FIG. 12 is a schematic cross-sectional view taken along line XII-XII in FIG. 9;

FIG. 13 is a schematic cross-sectional view taken along line XIII-XIII in FIG. 9;

fig. 14 is a schematic structural view of a valve core assembly, a crank, a solenoid valve and a bottom cover of a gas valve of the gas range of the present invention.

Reference numerals illustrate:

/>

the achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present invention, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.

The invention provides a gas valve of a gas stove.

In an embodiment of the present invention, as shown in fig. 4 to 8, and fig. 10, a gas valve of the gas range includes:

the valve body 10 is internally formed with a valve cavity 104 extending in the up-down direction, an air inlet passage 105 communicating with the valve cavity 104, and a connecting hole 106 horizontally penetrating from the inner wall surface of the lower part of the valve cavity 104 to the outer wall of the valve body 10;

an inner ring air outlet pipe 11 extending horizontally and outwards from the periphery of the outer wall connecting hole 106 of the valve body 10;

a boss 12, which is arranged at the joint of the valve body 10 and the inner ring air outlet pipe 11 and is positioned at the upper side of the inner ring air outlet pipe 11, and the upper end surface of the boss 12 is provided with a first channel 121 which extends downwards to be communicated with the inner ring air outlet pipe 11;

a seal 13 and an adjustment valve plug 15;

the end face of the boss 12 far away from the valve body 10 is provided with a second channel 122 extending horizontally, and the second channel 122 is intersected with the first channel 121 and penetrates through to the wall surface of the valve cavity 104 adjacent to the boss 12;

the seal 13 seals the end of the second passage 122 remote from the valve chamber 104; the regulator valve plug 15 is movably disposed in the first passage 121 in the up-down direction to regulate the effective flow area of the first passage 121 connected to the second passage 122.

In the embodiment, the valve body 10 is used for forming various inner cavities, and for convenience in processing, the valve body 10 comprises a split body 101, an upper cover 102 and a bottom cover 103, wherein the body 101 comprises a cylindrical adjusting valve part 107 and a connecting valve part 108 connected with the adjusting valve part 107 in a block shape; a valve cavity 104 is formed in the adjusting valve part 107, the valve cavity 104 is communicated up and down in the adjusting valve part 107, and the upper cover 102 covers the opening of the upper end of the valve cavity 104; an outer ring air outlet passage 109 communicating with the valve chamber 104 is formed in an upper portion of the connection valve portion 108; the bottom cover 103 is fastened to the lower part of the body 101, and the bottom cover 103 covers the opening at the lower end of the valve cavity 104 and encloses with the bottom of the body 101 to form a bridging cavity 110. The inner ring air outlet pipe 11 is used for communicating with an inner ring burner of the gas stove, the inner ring air outlet pipe 11 and the boss 12 are generally integrally arranged with the valve body 10, and the material of the inner ring air outlet pipe 11 can be copper or aluminum. The seal 13 is used to close the outer end of the second passage 122 so that the intersecting second passage 122 and first passage 121 may form an inner ring restriction passage. Preferably, the length of the second channel 122 ranges from 16.5 to 17.5mm. The adjustment of the regulator valve pin 15 is typically already done before the gas valve is assembled to the gas range unit.

As can be appreciated, as a basic function implementation, referring specifically to fig. 9 to 12, and fig. 14, the gas stove further includes:

the air inlet pipe 16 is arranged on one side of the valve body 10, which is away from the inner ring air outlet pipe 11, the air inlet pipe 16 extends into the connecting valve part 108 to form an air inlet channel 105, and the air inlet pipe 16 is used for communicating with an air source;

the outer ring air outlet pipe 17 is arranged on one side of the inner ring air outlet pipe 11 of the valve body 10, the outer ring air outlet pipe 17 is communicated with the outer ring air outlet channel 109, and the outer ring air outlet pipe 17 is communicated with an outer ring burner of the gas stove;

the electromagnetic installation tube 18 is arranged on one side of the inner ring air outlet tube 11 of the valve body 10, the side wall of the electromagnetic installation tube 18 is communicated with the air inlet tube 16, and an air inlet valve hole 111 communicated with the bridging cavity 110 is formed in a position of the connecting valve part 108 corresponding to the electromagnetic installation tube 18;

the valve core assembly 19 comprises a valve handle 191, a valve core 192, a thimble 193 and a first elastic piece 194; the valve core 192 is arranged in a hollow way, and the side wall of the valve core 192 is provided with a first inner ring valve hole 195, a second inner ring valve hole 196 and an outer ring valve hole 198 from bottom to top; the first inner ring valve aperture 195 is configured to interface with the connection aperture 106, the second inner ring valve aperture 196 is configured to interface with the second channel 122, and the outer ring valve aperture 198 is configured to interface with the outer ring outlet channel 109; the valve core 192 is sleeved on the periphery of the thimble 193 and is arranged in the valve cavity 104; the lower end of the valve handle 191 is engaged with or separated from the upper end of the valve core 192, and in an initial state, the valve handle 191 is separated from the valve core 192 by the first elastic member 194;

a micro switch 21 for generating a start signal for triggering the gas range igniter to work along with the downward movement of the valve handle 191;

the crank 22, the crank 22 includes a rotating shaft 221, a pulling piece 222 arranged at one end of the rotating shaft 221, and a pulling rod 223 arranged at the other end of the rotating shaft 221; the crank 22 is arranged in the bridging cavity 110, and the poking piece 222 is abutted with the lower end of the thimble 193; the end of the shift lever 223 is bent to extend into or withdraw from the air inlet valve hole 111 when rotating along with the rotation shaft 221;

the electromagnetic valve 23 comprises an electromagnetic main body 231, a movable core 232, a sealing plug 233 and a second elastic piece 234, wherein the movable core 232 can axially reciprocate along the electromagnetic installation tube 18, the sealing plug 233 is sleeved at one end of the movable core 232 close to the air inlet valve hole 111, and in an initial state, the second elastic piece 234 acts on the movable core 232 to enable the movable core 232 to move towards the direction close to the air inlet valve hole 111, so that the sealing plug 233 seals the air inlet valve hole 111.

For more level of flow control, referring to fig. 9 and 13, the gas valve further includes an extension pipe 24 extending vertically from the body 101 opposite to the inner ring gas outlet pipe 11, and a middle ring gas outlet pipe 25 extending vertically from one end of the extension pipe 24 far from the body 101, wherein the middle ring gas outlet pipe 25 is used for communicating with a middle ring burner of the gas stove; further, the middle ring air outlet pipe 25 is parallel to the inner ring air outlet pipe 11. An intermediate ring air outlet channel 241 which is communicated with the valve cavity 104 and the intermediate ring air outlet pipe 25 is formed in the extension pipe 24, and correspondingly, an intermediate ring valve hole 198 which is in butt joint with the intermediate ring air outlet channel 241 is formed on the side wall of the valve core 192.

The operation of the gas valve is described as follows:

the valve handle 191 is pressed downwards to a preset distance, in the process, the first elastic piece 194 is compressed, the micro switch 21 is triggered, the igniter of the gas stove synchronously works, the lower end of the valve handle 191 is in scarf joint with the upper end of the valve core 192, the thimble 193 transmits the downward movement of the valve handle 191 to the poking piece 222 of the crank 22, and the rotating shaft 221 rotates to drive the tail end of the poking rod 223 to extend into the air inlet valve hole 111 to push up the sealing plug 233; at this time, the air intake pipe 16, the electromagnetic mounting pipe 18, the bridging chamber 110, and the valve chamber 104 are in a communication state; then, the valve handle 191 can drive the valve core 192 to rotate, and the valve handle 191 is rotated to different preset angles, such as 60 degrees, 90 degrees, 120 degrees, etc., so that the first inner ring valve hole 195, the second inner ring valve hole 196 and the middle ring valve hole 198 on the valve core 192 are in butt joint with the corresponding hole or channel characteristics, and further the flow control is realized.

The gas valve of the gas stove is characterized in that the second channel 122 of the inner ring throttling structure is formed at one end of the boss 12 far away from the valve body 10 and extends to the wall surface of the valve cavity 104 adjacent to the boss 12, namely, the second channel 122 is formed in the boss 12 only, does not need to traverse the valve cavity 104 any more, and forms a channel at one side of the valve body 10 far away from the boss 12; accordingly, when the seal member 13 is installed, the installation position of the seal member 13 is relatively away from the inner wall surface of the valve chamber 104, so that deformation of the inner wall surface of the valve chamber 104 can be avoided. In contrast, the machining distance required for machining the second passage 122 of this structure is small, which is time-saving and easier to control the machining accuracy, and further, the accuracy control cost of the gas valve of the gas range can be reduced.

Further, the valve cavity 104 is in an inverted cone shape, and the extending direction of the second channel 122 is perpendicular to the axial direction of the valve cavity 104; the extending direction of the first channel 121 is perpendicular to the extending direction of the second channel 122.

In the present embodiment, the valve cavity 104 is in an inverted cone shape, which is beneficial to positioning the valve core 192 matched with the valve cavity 104, so as to improve the sealing between the valve core 192 and the inner wall surface of the valve cavity 104. The relative positions of the second passage 122 and the valve chamber 104, and the relative positions of the first passage 121 and the second passage 122 are all perpendicular, which is considered to be convenient for processing. Preferably, the extending direction of the first passage 121 is parallel to the axial direction of the valve chamber 104, and the upper end surface of the boss 12 is perpendicular to the extending direction of the first passage 121.

Further, a first reaming 123 is formed at the connection position of the bottom wall surfaces of the first channel 121 and the second channel 122, and an inverted conical surface is formed between the inner wall surface of the first reaming 123 and the inner wall surface of the first channel 121; the lower end of the regulating valve bolt 15 is in an inverted cone shape, and the taper of the lower end of the regulating valve bolt 15 is smaller than that of the inverted cone surface. Thus, when the lower end of the adjusting valve pin 15 gradually approaches the reverse taper surface connected to the first counterbore 123, the effective flow area of the first passage 121 connected to the second passage 122 can be adjusted gradually accordingly, i.e., more accurate adjustment is achieved.

Further, an internal thread is formed at the junction of the bottom wall surfaces of the first channel 121 and the second channel 122, and an external thread adapted to the internal thread of the first channel 121 is provided on the outer wall surface of the adjusting valve plug 15.

In this embodiment, the threaded engagement of the adjusting valve pin 15 with the first passage 121 can prevent the gas from escaping from the upper end of the first passage 121, ensure the sealing property, and accurately adjust the position of the adjusting valve pin 15 in the up-down direction.

Further, a second reaming 124 is arranged at the joint of the first channel 121 and the upper end surface of the boss 12, and a step surface is formed between the second reaming 124 and the inner wall surface of the first channel 121;

the outer peripheral surface of the upper end of the regulating valve bolt 15 is provided with an annular groove, the gas valve further comprises a sealing ring 15, and the sealing ring 15 is embedded in the annular groove and is abutted with the step surface.

In this embodiment, when the inner ring throttling channel needs to be completely closed, the adjusting valve bolt 15 is rotated downward to pre-compress the sealing ring 15, so as to ensure that the sealing ring 15 is in sealing contact with the step surface, and further improve the sealing effect of the first channel 121.

Further, an annular stepped recess 125 is formed at an end of the second passage 122 remote from the valve body 10, and the seal 13 is located in the stepped recess 125.

In this embodiment, the sealing member 13 is installed, and the step surface of the step-shaped concave portion 125, which is close to the valve cavity 104, can play a role in positioning the sealing member 13; at the same time, by avoiding the seal member 13 from directly acting on the inner wall surface of the second passage 122, deformation of the inner wall surface of the second passage 122 due to attachment of the seal member 13 can be prevented.

Further, the seal 13 is a cylindrical rivet or steel ball, and the seal 13 is interference fit with the stepped recess 125. In this way, the outer end of the second passage 122 can be sealed relatively simply, the outer diameter of the sealing member 13 as a cylindrical rivet or steel ball being preferably 4mm, and correspondingly the inner diameter of the second passage 122 being 3.85mm.

Further, the sealing member 13 is a cylindrical screw, and the annular wall surface of the stepped recess 125 is provided with an internal thread that mates with the sealing member 13.

The invention also provides a gas stove, which comprises a gas valve of the gas stove, and the specific structure of the gas valve of the gas stove refers to the embodiment, and as the gas stove adopts all the technical schemes of all the embodiments, the gas stove at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted.

The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the invention.

Claims

1. A gas valve of a gas range, comprising:

the seal seals an end of the second passage remote from the valve chamber; the adjusting valve bolt is movably arranged in the first channel along the up-down direction so as to adjust the effective flow area of the first channel connected with the second channel;

a first reaming is arranged at the joint of the bottom wall surface of the first channel and the bottom wall surface of the second channel, and an inverted conical surface is formed between the inner wall surface of the first reaming and the inner wall surface of the first channel; the lower end of the adjusting valve bolt is in an inverted cone shape, and the taper of the lower end of the adjusting valve bolt is smaller than that of the inverted cone.

2. The gas valve of a gas range according to claim 1, wherein the valve chamber is in an inverted cone shape, and the second passage extends in a direction perpendicular to an axial direction of the valve chamber; the extending direction of the first channel is perpendicular to the extending direction of the second channel; the extending direction of the first passage is parallel to the axial direction of the valve cavity.

3. The gas valve of claim 2, wherein an internal thread is formed at the junction of the first passage and the bottom wall surface of the second passage, and an external thread adapted to the internal thread of the first passage is formed on the outer wall surface of the adjusting valve pin.

4. The gas valve of a gas cooker as claimed in claim 2 or 3, wherein a second reaming is formed at a connection part between the first channel and the upper end surface of the boss, and a step surface is formed between the second reaming and an inner wall surface of the first channel;

5. The gas valve of a gas range as set forth in claim 2, wherein an end of said second passage remote from said valve body is formed with an annular stepped recess, said seal being located in said stepped recess.

6. The gas valve of a gas cooker as set forth in claim 5, wherein said seal is a cylindrical rivet or steel ball and said seal is interference fit with said stepped recess.

7. The gas valve of a gas range according to claim 5, wherein the sealing member is a cylindrical screw, and the annular wall surface of the stepped recess is provided with an internal thread engaged with the sealing member.

8. The gas valve of claim 2, wherein the length of the second channel ranges from 16.5 mm to 17.5mm.

9. A gas range comprising a gas valve of a gas range according to any one of claims 1-8.