CN112112994A

CN112112994A - Flow regulating valve for gas stove

Info

Publication number: CN112112994A
Application number: CN201910535127.6A
Authority: CN
Inventors: 黄重景; 黄锦颖; 黄信铭; 黄信雄; 叶严仁
Original assignee: Grand Mate Co Ltd
Current assignee: Grand Mate Co Ltd
Priority date: 2019-06-20
Filing date: 2019-06-20
Publication date: 2020-12-22
Anticipated expiration: 2039-06-20
Also published as: CN112112994B

Abstract

A flow control valve of a gas stove comprises a valve body, a shutter, a connecting piece, a fixed seat and a stepping motor, wherein the valve body is provided with a containing chamber for respectively communicating an air inlet and an air outlet; the shutter is provided with a shaft hole and a flow regulating structure, the shaft hole corresponds to the air outlet, and the flow regulating structure corresponds to the air inlet; the connecting piece is arranged on one side of the shutter, and at least one part of the connecting piece is exposed outside; the fixed seat is provided with a through hole, the inner side of the hole wall of the through hole is provided with a first blocking part and a second blocking part, a rotatable area is formed between the first blocking part and the second blocking part, at least one part of the connecting piece is positioned in the rotatable area to limit the rotating position of the stopper, and the stepping motor is provided with a rotating shaft which is connected with the connecting piece; thereby, a modular flow control valve is formed.

Description

Flow regulating valve for gas stove

Technical Field

The present invention relates to a gas stove; in particular to a flow regulating valve suitable for a gas stove.

Background

Gas stoves, for example: a gas oven, such as a barbecue oven or a gas oven, is the oven most commonly used by people because the gas oven generates a higher amount of heat energy when burning gas than an electric oven, and thus both the heating time and the reaction time of the switching of the heating power are faster than those of the electric oven.

The existing gas stove comprises a stove head, a manual flow regulating valve and a knob, when in use, the knob is pressed down and rotated first, so that gas can flow to the stove head through the manual flow regulating valve, and the gas stove is favorable for igniting, heating and cooking food. By rotating the knob, the manual flow control valve can be driven to adjust the gas flow so as to change the fire power outputted from the burner.

With the progress of science and technology, the terms of intelligent housing, safe housing and the like are proper terms generated under the development of modern science and technology, and represent the convenience and safety of the science and technology for people living in life, so that the combination of science and technology and life is more and more compact. However, the conventional gas stove is difficult to be combined with modern technologies because a user must adjust the gas flow rate by a manual flow rate adjusting valve. How to combine the gas stove with the application of science and technology to provide a more convenient and safer living environment is a goal of urgent need.

Disclosure of Invention

In view of the above, the present invention is directed to a flow control valve for a gas stove, which has a structure capable of being automatically controlled.

In order to achieve the above object, the present invention provides a flow control valve for a gas stove, comprising: a valve body, a closer, a connecting piece, a fixed seat and a stepping motor; the valve body is provided with an air inlet, an air outlet and a containing chamber, the containing chamber is respectively communicated with the air inlet and the air outlet, the valve body is provided with a combining end, and the combining end is provided with an opening communicated with the containing chamber; the valve body is provided with a containing chamber, a valve seat and a valve seat, wherein the valve seat is provided with a valve seat, a valve seat and a valve seat, the valve seat is provided with a valve hole, the valve hole is arranged in the containing chamber, the valve hole is positioned in the axial direction, the valve hole is positioned in the radial direction, the valve hole corresponds to the air outlet hole and is communicated with the flow regulating structure, and the flow regulating structure corresponds; the closer is provided with a connecting end which is back to the shaft hole and corresponds to the opening of the combining end; the connecting piece is arranged at the connecting end and is provided with a stop block positioned on the radial direction, and at least one part of the stop block is positioned outside the opening of the combining end; the fixed seat is provided with a first side and a second side which are opposite, the first side is combined with the combining end of the valve body, a through hole corresponding to the opening is arranged between the first side and the second side, a first stopping part and a second stopping part are arranged on the inner side of the hole wall of the through hole, a rotatable area is formed between the first stopping part and the second stopping part, the connecting piece penetrates through the through hole, and at least one part of the stopping piece is positioned in the rotatable area so as to limit the rotating position of the stopper; the stepping motor comprises a motor body and a rotating shaft, wherein the motor body is combined with the second side of the fixed seat, and the rotating shaft is connected with the connecting piece.

The invention has the advantages that the stepping motor can be combined with the valve body by the fixing seat to form a modularized flow regulating valve, the rotating shaft of the stepping motor rotates to drive the connecting piece to rotate, and the connecting piece drives the closer to rotate, so that the flow regulating structure of the closer rotates relative to the air inlet hole of the valve body, thereby controlling the size of the gas flow, automating the control of the gas flow and being more convenient when the gas stove is used. The first blocking part and the second blocking part of the fixing seat can also limit the rotation angle of the closer so as to position the closer when the stepping motor is controlled.

Drawings

Fig. 1 is a perspective view of a flow control valve of a gas stove according to a preferred embodiment of the present invention.

Fig. 2 is an exploded view of a flow control valve of the gas range according to the above preferred embodiment of the present invention.

Fig. 3 is another exploded view (partially without bolts) of the flow control valve of the gas burner according to the above preferred embodiment of the present invention.

Fig. 4 is a partial sectional view of the flow control valve.

FIG. 5 is a development view of a partial circumferential surface of the obturator.

Fig. 6(a) - (c) show the front, rear and top views of the fixing base, respectively.

3 FIG. 3 7 3 is 3 a 3 schematic 3 view 3 illustrating 3 the 3 relationship 3 between 3 the 3 closure 3 and 3 the 3 air 3 inlet 3 when 3 the 3 stopper 3 abuts 3 against 3 the 3 first 3 stopper 3, 3 wherein 3 ( 3 a 3) 3 is 3 a 3 sectional 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 ' 3 of 3 FIG. 34 3, 3 and 3 ( 3 b 3) 3 is 3 a 3 sectional 3 view 3 taken 3 along 3 line 3 B 3- 3 B 3' 3 of 3 FIG. 34 3. 3

FIG. 8 is a schematic view illustrating the relationship between the closure and the gas inlet when the stopper is in the first position.

Fig. 9 is a schematic view showing the relationship between the stopper and the air inlet when the stopper abuts against the second blocking portion.

Detailed Description

In order to more clearly illustrate the present invention, preferred embodiments are described in detail below with reference to the accompanying drawings. Referring to fig. 1 to 3, there is shown a flow control valve 100 of a gas stove according to a preferred embodiment of the present invention, the gas stove can be a barbecue stove, a gas stove, etc., the flow control valve 100 includes: a valve body 10, a closure 20, a connecting member 30, a fixing seat 40 and a further motor 60, wherein:

the valve body 10 has a containing chamber 10a, an air outlet 10b and an air inlet 10c, the containing chamber 10a is located between the air inlet 10c and the air outlet 10b, so that the air inlet 10c is communicated with the air outlet 10b through the containing chamber 10a to form an air flow passage. The air outlet 10b is located at the front end of the valve body 10, the rear end of the valve body 10 is a combining end 12, the combining end 12 has an opening 12a and two screw holes 12b, and the opening 12a is communicated with the accommodating chamber 10 a; the two screw holes 12b are located radially outside the opening 12a, respectively.

The shutter 20 is conical and rotatably disposed in the chamber 10a of the valve body 10 for adjusting the gas flow passing through the gas flow passage. Referring to fig. 4 and 5, the closure 20 has an axial hole 22 and a flow-adjusting structure 24, the axial hole 22 corresponds to the air outlet 10b, and the flow-adjusting structure 24 corresponds to the air inlet 10 c. In this embodiment, the flow-regulating structure 24 has a first air hole 242, a second air hole 244 and a guiding slot 246, the first air hole 242 and the second air hole 244 are connected to the axle hole 22, and the aperture of the first air hole 242 is larger than that of the second air hole 244; the guiding groove 246 is located between the first air hole 242 and the second air hole 244 and is communicated with the first air hole 242, and the groove width of the guiding groove 246 is gradually reduced from the first air hole 242 to the second air hole 244. The flow regulating structure 24 is only one example of the flow regulating structure, and is not intended to limit the present invention.

The closure 20 has a connecting end 26 opposite to the shaft hole 22 and corresponding to the opening 12a of the combining end 12 of the valve body 10, the connecting end 26 has a concave hole 26a and a cutting groove 26b, the concave hole 26a is located in the axial direction of the closure 20 and is not communicated with the shaft hole 22, the cutting groove 26b is located at one side of the concave hole 26a and is communicated with the concave hole 26 a.

As shown in fig. 4, the connecting member 30 is detachably disposed in the concave hole 26a of the connecting end 26, the connecting member 30 is cylindrical and has a stopper 32 protruding in a radial direction and a groove 34 recessed in an axial direction, the stopper 32 is disposed in the groove 26b, two side walls of the stopper 32 respectively abut against two side walls of the groove 26b, a portion of the stopper 32 is disposed in the groove 26b, and another portion of the stopper 32 extends out of the groove 26b along the axial direction of the connecting member 30, in particular, another portion of the stopper 32 is disposed outside the opening 12a of the coupling end 12. In practice, the connecting member 30 can also be fixedly combined with or integrally formed with the connecting end 26 of the closure 20.

The fixing base 40 is used to fix the stepping motor 60 at the rear end of the valve body 10, as shown in fig. 2, 3 and 6, the fixing base 40 has a first side 42 and a second side 44, wherein the first side 42 is opposite to the second side 44, the first side 42 is combined with the combining end 12 of the valve body 10, and the second side 44 is used to combine the stepping motor 60. A through hole 46 is formed between the first side 42 and the second side 44, the through hole 46 corresponds to the opening 12a of the combining end 12, an abutting portion 462 is formed by protruding from the inner side of the hole wall of the through hole 46 to the center of the through hole 46, the abutting portion 462 has a first stopping portion 462a and a second stopping portion 462b, the first stopping portion 462a and the second stopping portion 462b are both located in the through hole 46 and do not protrude out of the through hole 46, and a rotatable region is formed between the first stopping portion 462a and the second stopping portion 462 b. The coupling member 30 is partially positioned in the through hole 46 and the portion of the stopper 32 outside the opening 12a protrudes into the rotatable region. In practice, the connecting end 26 of the shutter 20 may also extend out of the opening 12a of the coupling end 12, so that the stopper 32 is integrally located outside the opening 12a and extends into the rotatable region.

More specifically, the fixing base 40 includes a main body 52 and two first combining portions 54, one side of the main body 52 facing the valve body 10 forms the first side 42 of the fixing base 40, the main body 52 has two opposite side walls 522, the two first combining portions 54 are respectively connected to the two side walls 522, one side of the main body 52 facing the step motor 60 and the two first combining portions 54 form the second side 44 of the fixing base 40.

The main body 52 has the through hole 46 and two through holes 48, the two through holes 48 correspond to the two screw holes 12b of the connection end 12, and two bolts 50 respectively pass through the two through holes 48 and are locked in the two screw holes 12b, so that the first side 42 is connected to the connection end 12 of the valve body 10. In this embodiment, the main body 52 has a receiving slot 524, the opening of the receiving slot 524 faces the stepping motor 60, and the through hole 46 and the through hole 48 are located on the slot surface of the receiving slot 524. As shown in fig. 4, the head of one of the bolts 50 is received in the receiving slot 524. In practice, if the receiving groove 524 is larger, the two through holes 48 may be located on the groove surface of the receiving groove 524, so that the heads of the two bolts 50 are received in the receiving groove 524.

Referring to fig. 6, each of the first combining portions 54 has a connecting section 542 and a combining section 544, the connecting section 542 is located between the combining section 544 and one of the side walls 522 of the main body 52, and the connecting section 542 has a plurality of reinforcing ribs, and in a direction from the second side 44 of the fixing base 40 to the first side 42, a thickness a of the connecting section 542 is greater than a thickness B of the combining section 544. Thereby, the structural strength of the first coupling portion 54 is increased. The coupling section 544 of each first coupling portion 54 has a threaded hole 546 (see fig. 3).

The stepping motor 60 includes a motor body 62 and a rotating shaft 64, the motor body 62 has a stator and a rotor (not shown) therein, one side of the motor body 62 faces the opening of the accommodating groove 524 of the main body 52, and two sides of the motor body 62 respectively have two second combining portions 622, each second combining portion 622 has a through hole 622a, and two bolts 622b respectively pass through each through hole 622a and are locked in the screw holes 546 of each first combining portion 54, so that each first combining portion 54 is combined with each second combining portion 622, and the motor body 62 is combined with the second side 44 of the fixing base 40. The shaft 64 penetrates into the groove 34 of the connecting member 30. In the present embodiment, the stepping motor 60 is electrically connected to a control device (not shown) through a control line 66 to receive a pulse signal generated by the control device to control the rotation angle of the rotating shaft 64. In practice, the motor body 62 and the fixing base 40 may also be integrally connected, that is, the motor body 62 and the fixing base 64 are integrally formed, in which case, the two through holes 48 of the fixing base 64 are located at two sides of the fixing base 64, so as to be externally bolted through the through holes 48 and locked to the threaded hole 12b of the valve body 10.

Referring to fig. 4 and 7, when the stopper 32 abuts against the first stop part 462a of the abutting part 462, the stopper 32 is defined to be located at the original position P0, and the outer ring of the closure 20 faces the air inlet hole 10c, so as to block the gas from flowing through the flow regulating structure 24.

Referring to fig. 4 and 8, when the control device transmits a pulse signal of a first predetermined number of steps along a first rotation direction D1 to the stepping motor 60, the rotation shaft 64 drives the connecting member 30 to rotate, and in detail, the stopper 32 rotates from the original position P0 to a first position P1, and at this time, the first air hole 242 of the closure 20 corresponds to the air inlet hole 10c, so that the gas flows through the first air hole 242 and then flows to the outside through the shaft hole 22 and the air outlet hole 10 b.

Referring to fig. 9, when the control device transmits a pulse signal of a second predetermined number of steps along the first rotation direction D1 to the stepping motor 60 again, the connecting member 30 is rotated by the rotating shaft 64, and in detail, during the rotation, the gas flow rate is linearly reduced by the groove width linearly tapered by the guiding groove 246, and finally the stopper 32 abuts against the second stopping portion 462b to be located at a second position P2, at this time, the second air hole 244 of the closure 20 corresponds to the air inlet hole 10c, and the gas flow passes through the second air hole 244 and then flows to the outside through the shaft hole 22 and the air outlet hole 10 b. Since the diameter of the second air hole 244 is smaller than that of the first air hole 242, the flow rate of the gas passing through the second air hole 244 is the smallest relative to the first air hole 242.

To move the stopper 32 back to the original position P0, the control device transmits a pulse signal of a third predetermined number of steps in a second rotating direction D2 to the stepping motor 60, wherein the second rotating direction D2 is opposite to the first rotating direction D1, and the third predetermined number of steps is greater than or equal to the sum of the first and second predetermined numbers of steps, thereby causing the shaft 64 to rotate the connecting member 30 and the stopper 32 to return to the original position P0. Preferably, the third predetermined number of steps is greater than the sum of the first and second predetermined numbers of steps, so that the stopper 32 can be firmly abutted against the first stop part 462a to ensure that the stopper 32 returns to the original position P0, and no gas flows to the outside. In other words, as long as the sum of the number of steps in the second rotating direction D2 is greater than the sum of the number of steps in the first rotating direction D1, the stopper 32 is ensured to return to the origin position P0.

According to the above, the flow regulating valve of the gas stove of the invention controls the gas flow through the stepping motor, so that the control of the gas stove is more convenient; on the other hand, the valve body is combined with the motor body through the fixing seat, so that the modularized flow regulating valve is realized, and the assembly in a gas stove is facilitated.

The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications to the present invention as described and claimed should be included in the scope of the present invention.

Description of the reference numerals

[ invention ]

Flow regulating valve of 100 gas stove

10 valve body

10a chamber 10b vent 10c vent

12 coupling end 12a opening 12b screw hole

20 closure

22-shaft hole 24 flow regulating structure 242 first air hole

244 second air hole 246 leading slot 26 connection end

26a recess 26b slot

30 connecting piece

32 stop 34 groove

40 fixed seat

42 first side 44 second side 46 through hole

462a abutting portion 462a first stopping portion 462b second stopping portion

48-hole 50 bolt 52 body

522 side wall 524 receiving slot 54 first engaging portion

542 connecting section 544 coupling section 546 threaded bore

60 stepping motor

62 motor body 622 second joint 622a perforation

622b bolt 64 spindle 66 control line

Thickness A

Thickness B

First direction of rotation D1

Second direction of rotation D2

Origin position P0

First position P1

Second position P2

Claims

1. A flow control valve of a gas stove comprises:

the valve body is provided with an air inlet hole, an air outlet hole and a containing chamber, and the containing chamber is respectively communicated with the air inlet hole and the air outlet hole; the valve body is provided with a combining end, and an opening is formed in the combining end and communicated with the accommodating chamber;

the flow regulating structure is communicated with the shaft hole; the obturator is rotatably arranged in the containing chamber of the valve body, the shaft hole corresponds to the air outlet hole, and the flow regulating structure corresponds to the air inlet hole; the closer is provided with an opening, the connecting end of which is back to the shaft hole and corresponds to the combining end;

the connecting piece is arranged at the connecting end, a stop block positioned on the radial direction is arranged on the connecting piece, and at least one part of the stop block is positioned outside the opening of the combining end;

the connecting piece penetrates through the through hole, and at least one part of the stop block is positioned in the rotatable area so as to limit the rotating position of the closure; and

the motor comprises a motor body and a rotating shaft, wherein the motor body is combined on the second side of the fixed seat, and the rotating shaft is connected with the connecting piece.

2. The flow control valve for a gas stove according to claim 1, wherein the fixing base comprises a main body and two first engaging portions, the main body has the through hole, the main body has two opposite side walls, and the two first engaging portions are respectively connected to the two side walls; the two sides of the motor body are respectively provided with a second combining part, and the first combining parts correspond to the second combining parts and are combined with each other.

3. The flow rate adjusting valve for a gas stove according to claim 2, wherein each of the first coupling portions has a connecting section and a coupling section, the connecting section is located between the coupling section and one of the side walls of the fixing base, and the thickness of the connecting section is greater than that of the coupling section.

4. The flow rate adjusting valve for a gas stove according to claim 3, wherein each of the first coupling portions has a screw hole, each of the second coupling portions has a through hole, and each of the first coupling portions is coupled to each of the second coupling portions by two bolts passing through the two through holes and being locked in the two screw holes.

5. The flow rate adjusting valve for a gas stove according to claim 3, wherein the thickness of the connecting section increases from the coupling section toward one of the side walls of the main body.

6. The flow control valve for a gas stove according to claim 1, wherein the coupling end of the valve body has two screw holes, and the fixing base has two through holes corresponding to the two screw holes, respectively, and two bolts are inserted through the two through holes and locked in the two screw holes, respectively.

7. The flow control valve for a gas stove according to claim 6, wherein the fixing base comprises a main body having a receiving groove, an opening of the receiving groove faces the motor body, and the through hole and the at least one through hole are formed on a groove surface of the receiving groove.

8. The flow rate adjusting valve for a gas range according to claim 2, wherein the connecting end of the shutter has a recess and a cut groove, the recess communicating with the cut groove; the connecting piece penetrates into the concave hole, and a part of the stop block extends into the cutting groove.

9. The flow control valve for a gas stove according to claim 1, wherein the motor body is integrally connected to the second side of the fixing base.