EP3779279B1 - Durchflussregelventil für gasofen - Google Patents

Durchflussregelventil für gasofen Download PDF

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Publication number
EP3779279B1
EP3779279B1 EP19191495.1A EP19191495A EP3779279B1 EP 3779279 B1 EP3779279 B1 EP 3779279B1 EP 19191495 A EP19191495 A EP 19191495A EP 3779279 B1 EP3779279 B1 EP 3779279B1
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EP
European Patent Office
Prior art keywords
flow regulating
hole
block
regulating valve
gas stove
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19191495.1A
Other languages
English (en)
French (fr)
Other versions
EP3779279A1 (de
Inventor
Chung-Chin Huang
Chin-Ying Huang
Hsin-Ming Huang
Hsing-Hsiung Huang
Yen-Jen Yeh
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Grand Mate Co Ltd
Original Assignee
Grand Mate Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Grand Mate Co Ltd filed Critical Grand Mate Co Ltd
Priority to EP19191495.1A priority Critical patent/EP3779279B1/de
Publication of EP3779279A1 publication Critical patent/EP3779279A1/de
Application granted granted Critical
Publication of EP3779279B1 publication Critical patent/EP3779279B1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/005—Regulating fuel supply using electrical or electromechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/02—Liquid fuel
    • F23K5/14—Details thereof
    • F23K5/147—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2900/00—Special features of, or arrangements for fuel supplies
    • F23K2900/05002—Valves for gaseous fuel supply lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/02—Air or combustion gas valves or dampers
    • F23N2235/10—Air or combustion gas valves or dampers power assisted, e.g. using electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/16—Fuel valves variable flow or proportional valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2235/00—Valves, nozzles or pumps
    • F23N2235/12—Fuel valves
    • F23N2235/24—Valve details

Definitions

  • the present invention generally relates to a gas stove, and more particularly to a flow regulating valve of a gas stove.
  • Gas stoves such as barbecue grills or kitchen gas stoves are the most commonly used stoves. The reason is, compared to electric heating stoves, gas stoves have higher heat energy generated by burning gas, so the heating time and the response time of flames adjusting are faster than those of electric heating stoves.
  • a conventional gas stove includes a burner, a manual flow regulating valve and a knob.
  • press the knob When in use, press the knob first and rotate to have gas flowing through the manual flow regulating valve to the burner to ignite flames and then for cooking.
  • the gas flow is regulated by the manual flow regulating valve to adjust the flames output from the burner.
  • patent application EP 3 517 841 A1 discloses gas applience including a gas valve which comprises a valve body, a flow regulator, a hot film anemometer, and a stepper motor. Said gas applience is able to maintain a gas flow at a predetermined gas flow rate based on the measurement results obtained by the anemometer.
  • Patent application EP 3 045 788 A1 refers to a flow control valve comprising vlave body, a valve member slidably disposed in the body, a driver adapter, a stepper motor connected to the driver adapter, and an inlet port and an outlet port extending through the body and being disposed on opposite sides.
  • Patent Application EP 2 520 861 A1 discloses a gas valve unit for controllin a gas flow rate, comprising a valve member movable relative to a valve set, wherein an input signal to a coil controls the extent of movement of the valve member to control the gas flow rate through the gas valve unit.
  • a purpose of the present invention is to provide a flow regulating valve of a gas stove that can be applied to automatic control.
  • the present invention provides a flow regulating valve of a gas stove, including a valve member, a plug member, a connecting member, a fixed base, and a stepper motor.
  • the valve member has an inlet hole, an outlet hole, and a chamber which respectively communicates with the inlet hole and the outlet hole.
  • the valve member has a joint end which is provided with an opening communicating with the chamber.
  • the plug member rotatably provided in the chamber of the valve member has an axial bore in an axial direction and a flow regulating structure in a radial direction.
  • the axial bore corresponds to the outlet hole and communicates with the flow regulating structure, and the flow regulating structure corresponds to the inlet hole.
  • the plug member has a connecting end facing away from the axial bore and corresponding to the opening of the joint end.
  • the connecting member that is disposed on the connecting end has a block in a radial direction, and at least a part of the block is located outside the opening of the joint end.
  • the fixed base has a first side and a second side positioned back-to-back. The first side is engaged with the joint end of the valve member.
  • the fixed base further has a through hole communicating with the first side and the second side and corresponding to the opening. A wall of the through hole is provided with a first block section and a second block section, and a space for rotating the block is formed between the first block section and the second block section.
  • the connecting member passes through the through hole, and at least a part of the block is in the space to limit a rotating angle of the plug member.
  • the stepper motor that includes a motor body and a rotating shaft is connected to the second side of the fixed base, and the rotating shaft is connected to the connecting member.
  • An advantage of the present invention is to form a modular flow regulating valve by engaging the stepper motor with the valve member through the fixed base. And, the rotating shaft of the stepper motor drives the connecting member to rotate, the connecting member then drives the plug member to rotate, resulting in the flow regulating structure of the plug member rotating relative to the inlet hole of the valve member to regulate the flow rate of the gas, so that the automatic control of the gas flow can be achieved and gas stoves are more convenient to use.
  • the first block section and the second block section of the fixed base can further limit the rotating angle of the plug member, so that the rotating position of the plug member can be determined.
  • FIG. 1 to FIG. 3 show a flow regulating valve 100 of a gas stove of a preferred embodiment according to the present invention.
  • the gas stove can be a barbecue grill or a kitchen gas stove.
  • the flow regulating valve 100 includes a valve member 10, a plug member 20, a connecting member 30, a fixed base 40 and a stepper motor 60.
  • the valve member 10 has a chamber 10a, an outlet hole 10b, and an inlet hole 10c.
  • the chamber 10a is located between the inlet hole 10c and the outlet hole 10b, and the inlet hole 10c communicates with the outlet hole 10b through the chamber 10a to form an air passage.
  • the outlet hole 10b is located at a front end of the valve member 10, and a rear end of the valve member 10 is a joint end 12.
  • the joint end 12 has an opening 12a and two threaded holes 12b, the opening 12a communicates with the chamber 10a, and the two threaded holes 12b are respectively located on an outer side in a radial direction of the opening 12a.
  • the plug member has a conical shape and is rotatably disposed in the chamber 10a of the valve member10 for regulating the gas flow that flows through the air passage.
  • the plug member 20 has an axial bore 22 in an axial direction and a flow regulating structure 24 in a radial direction, the axial bore 22 corresponding to the outlet hole 10b and the flow regulating structure 24 corresponding to the inlet hole 10c.
  • the flow regulating structure 24 has a first bore 242, a second bore 244, and a guiding slot 246.
  • the first bore 242, the second bore 244, and the axial bore 22 communicate with each other, and a bore diameter of the first bore 242 is larger than that of the second bore 244.
  • the guiding slot 246 is located between the first bore 242 and the second bore 244 and communicates with the first bore 242.
  • the width of the guiding slot 246 decreases gradually from the first bore 242 to the second bore 244.
  • the flow regulating structure 24 is only an example to realize the regulation of the flow, not intended to limit the present invention.
  • the plug member 20 has a connecting end 26 that faces away from the axial bore 22 and corresponds to the opening 12a of the joint end 12 of the valve member 10.
  • the connecting end 26 has a recess hole 26a and a notch 26b.
  • the recess hole 26a is located in an axial direction of the plug member 20 and does not communicate with the axial bore 22, and the notch 26b is located at a side of the recess hole 26a and communicates with the recess hole 26a.
  • the connecting member 30 is detachably disposed in the recess hole 26a of the connecting end 26.
  • the connecting member 30 has a cylindrical shape and has a block 32 projecting out in a radial direction thereof and a groove 34 recessed in an axial direction thereof.
  • a part of the block 32 is inside the notch 26b, two side walls of the block 32 respectively abut against two side walls of the notch 26b, while another part of the block 32 extends out of the notch 26b in an axial direction of the connecting member 30; more specifically, the another part of the block 32 is located outside the opening 12a of the joint end 12.
  • the connecting member 30 and the connecting end 26 of the plug member 20 are engaged fixedly or formed integrally.
  • the fixed base 40 is adapted to fix the stepper motor 60 at the rear end of the valve member 10. As illustrated in FIG. 2 , FIG. 3 , and FIG. 6 , the fixed base 40 has a first side 42 and a second side 44. The first side 42 and the second side 44 positioned back-to-back, the first side 42 is engaged with the joint end 12 of the valve member 10, and the second side 44 is engaged with the stepper motor 60.
  • the fixed base further has a through hole 46 communicating with the first side 42 and the second side 44 and corresponding to the opening 12a of the joint end 12.
  • An abutting part 462 which projects out in a direction from an inner side of a wall of the through hole 46 to a center of the through hole 46 is formed.
  • the abutting part 462 has a first block section 462a and a second block section 462b.
  • the first block section 462a and the second block section 462b are both in the through hole 46 and do not project out of the through hole 46.
  • a space for rotating the block 32 is formed between the first block section 462a and the second block section 462b.
  • a part of the connecting member 30 is in the through hole 46, and the part of the block 32 outside the opening 12a projects into the space.
  • the connecting end 26 of the plug member 20 can project out of the opening 12a of the joint end 12, such that the block 32 is entirely outside the opening 12a and projects into the space.
  • the fixed base 40 includes a base body 52 and two first joint parts 54.
  • a side of the base body 52 facing the valve member 10 forms the first side 42 of the fixed base 40.
  • the base body 52 has two side walls 522 positioned back-to-back, and the two first joint parts 54 are respectively connected to the two side walls 522.
  • a side of the base body 52 facing the stepper motor 60 and the two first joint parts 54 form the second side 44 of the fixed base 40.
  • the base body 52 has the through hole 46 and two bores 48.
  • the two bores 48 correspond to two threaded holes 12b of the joint end 12.
  • Two bolts 50 respectively pass through the two bores 48 and are screwed into the two threaded holes 12b, so that the first side 42 is engaged with the joint end 12 of the valve member 10.
  • the base body 52 has a receiving cavity 524.
  • An opening of the receiving cavity 524 faces the stepper motor 60, and the through hole 46 and one bore 48 are located on an inner face of the receiving cavity 524.
  • a head of one bolt 50 is accommodated in the receiving cavity 524.
  • the two bores 48 are both located on the inner face of the receiving cavity 524 so that two heads of the two bolts 50 can be both accommodated in the receiving cavity 524.
  • each of the first joint parts 54 has a connecting section 542 and an engaging section 544.
  • Each of the connecting sections 542 is located between one engaging section 544 and the corresponding one side wall 522 of the base body 52, and each connecting section 542 has a plurality of reinforced ribs.
  • a thickness A of each connecting section 542 is greater than a thickness B of each engaging section 544.
  • the thickness A of each connecting section 542 increases gradually from each engaging section 544 to the corresponding one side wall 522 of the base body 52, whereby a structural strength of the first joint part 54 increases.
  • Each of the engaging sections 544 of the first joint parts 54 has a threaded hole 546 (shown in FIG. 3 .)
  • the stepper motor 60 includes a motor body 62 and a rotating shaft 64. There are a stator and a rotor inside the motor body 62 (not shown in figures). A side of the motor body 62 faces the opening of the receiving cavity 524 of the base body 52, and two sides of the motor body 62 respectively have a second joint part 622. Each of the second joint parts 622 has a bore 622a, and two bolts 622b respectively pass through the two bores 622a and are screwed into each of the threaded holes 546 of the first joint parts 54, such that each first joint part 54 is engaged with the corresponding one second joint part 622. Thereby, the motor body 62 is engaged with the second side 44 of the fixed base 40.
  • the rotating shaft 64 passes through the groove 34 of the connecting member 30.
  • the stepper motor 60 is electrically connected to a control device (not shown in figures) via a control wire 66 for receiving a pulse signal generated by the control device to control a rotating angle of the rotating shaft 64.
  • the motor body 62 can be integrally connected to the fixed base 40, that is, the motor body 62 and the fixed base 64 are formed integrally.
  • the two bores 48 of the fixed base 64 are located on two sides of the fixed base 64 so as to be screwed into the threaded holes 12b of the valve member 10 by bolts passing through each bore 48 from the outside.
  • the block 32 when the block 32 abuts against the first block section 462a of the abutting part 462, the block 32 is defined to be located at an origin position P0, and an outer peripheral surface of the plug member 20 closes the inlet hole 10c to block the gas flow.
  • the rotating shaft 64 drives the connecting member 30 to rotate along the first rotating direction D1, so that the block 32 moves from the origin position P0 to a first position P1.
  • the first bore 242 of the plug member 20 corresponds to the inlet hole 10c so that gas flows through the first bore 242 and then through the axial bore 22 and the outlet hole 10b to the outside.
  • the rotating shaft 64 drives the connecting member 30 to rotate along the first rotating direction D1.
  • the guiding slot 246 having the gradually decreased width moves relative to the inlet hole 10c, such that gas flow is reduced linearly, and finally the block 32 abuts against the second block section 462b and is located at a second position P2.
  • the second bore 244 of the plug member 20 corresponds to the inlet hole 10c so that gas flows through the second bore 244 and then through the axial bore 22 and the outlet hole 10b to the outside. Since the bore diameter of the second bore 244 is smaller than that of the first bore 242, the gas flow that passes through the second bore 244 is the smallest.
  • the control device transmits a pulse signal of a third predetermined steps along a second rotating direction D2.
  • the second rotating direction D2 is opposite to the first rotating direction D1, and a number of the third predetermined steps is greater than or equal to the sum of the first predetermined steps and the second predetermined steps, such that the rotating shaft 64 drives the connecting member 30 to rotate along the second direction and the block 32 is back to the origin position P0.
  • the number of the third predetermined steps is greater than the sum of the first predetermined steps and the second predetermined steps, so that the block 32 can abut against the first block section 462a to ensure that the block 32 moves back to the origin position P0 to block the gas flow.
  • the sum of the steps in the second rotating direction D2 is greater than that in the first rotating direction D1, it is ensured that the block 32 is back to the origin position P0.
  • the flow regulating valve of the gas stove of the present invention controls gas flow through the stepper motor to achieve the automatic control of the gas stove.
  • the valve member and the motor body are connected to each other through the fixed base to achieve the modular flow regulating valve, which is advantageous for assembly in the gas stove.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Valve Housings (AREA)

Claims (9)

  1. Durchflussregulierungsventil (100) eines Gasherdes, welches aufweist:
    ein Ventilelement (10), welches ein Einlassloch (10c), ein Auslassloch (10b) und eine Kammer (10a) hat, welche jeweils mit dem Einlassloch (10c) und dem Auslassloch (10b) in Verbindung steht, wobei das Ventilelement (10) ein Anschlussende (12) hat, welches mit einer Öffnung (12a) versehen ist, welche mit der Kammer (10a) in Verbindung steht,
    ein Stopfenelement (20), welches ein axiales Bohrloch (22) in einer axialen Richtung davon und eine Durchflussregulierungsstruktur (24) in einer radialen Richtung davon hat, wobei die Durchflussregulierungsstruktur (24) mit dem axialen Bohrloch (22) in Verbindung steht, wobei das Stopfenelement (20) drehbar in der Kammer (10a) des Ventilelements (10) bereitgestellt ist, wobei das axiale Bohrloch (22) mit dem Auslassloch (10b) korrespondiert und die Durchflussregulierungsstruktur (24) mit dem Einlassloch (10c) korrespondiert, wobei das Stopfenelement (20) ein Verbindungsende (26) hat, welches von dem axialen Bohrloch (22) abgewandt ist und mit der Öffnung (12a) des Anschlussendes (12) korrespondiert,
    einen Schrittmotor (60), welcher einen Motorkörper (62) und eine Drehwelle (64) aufweist,
    wobei das Durchflussregulierungsventil (100) dadurch gekennzeichnet ist, dass:
    ein Verbindungselement (30) an dem Verbindungsende (26) angeordnet ist, wobei das Verbindungselement (30) einen Block (32) in einer radialen Richtung davon hat, und wobei mindestens ein Teil des Blocks (32) außerhalb von der Öffnung (12a) des Anschlussendes (12) angeordnet ist,
    eine fixierte Basis (40), welche eine erste Seite (42) und eine zweite Seite (44) hat, welche Rücken an Rücken angeordnet sind, wobei die erste Seite (42) mit dem Anschlussende (12) des Ventilelements (10) in Eingriff steht, wobei die fixierte Basis (40) ferner ein Durchgangsloch (46) hat, welches mit der ersten Seite (42) und der zweiten Seite (44) in Verbindung steht und mit der Öffnung (12a) korrespondiert, wobei eine Wand des Durchgangslochs (46) mit einem ersten Blockabschnitt (462a) und einem zweiten Blockabschnitt (462b) versehen ist, wobei ein Raum zum Drehen des Blocks (32) zwischen dem ersten Blockabschnitt (462a) und dem zweiten Blockabschnitt (462b) gebildet ist, wobei das Verbindungselement (30) durch das Durchgangsloch (46) hindurchgeht, und wobei sich zumindest ein Teil des Blocks (32) in dem Raum befindet, um einen Drehwinkel des Stopfenelements (20) zu begrenzen, und
    wobei der Schrittmotor (60) mit der zweiten Seite (44) der fixierten Basis (40) verbunden ist und die Drehwelle (64) mit dem Verbindungselement (30) verbunden ist.
  2. Durchflussregulierungsventil (100) des Gasherds gemäß Anspruch 1, wobei die fixierte Basis (40) einen Basiskörper (52) und zwei erste Anschlussteile (54) aufweist, der Basiskörper (52) das Durchgangsloch (46) und zwei Seitenwände (522) hat, welche Rücken an Rücken angeordnet sind, und die zwei ersten Anschlussteile (54) in jeweils zugeordneter Weise mit den zwei Seitenwänden (522) verbunden sind, zwei Seiten des Motorkörpers (62) jeweils ein zweites Anschlussteil (622) aufweisen, und jedes von den ersten Anschlussteilen (54) in jeweils zugeordneter Weise mit jedem von den zweiten Anschlussteilen (622) korrespondiert und damit verbunden ist.
  3. Durchflussregulierungsventil (100) des Gasherds gemäß Anspruch 2, wobei jedes von den ersten Anschlussteilen (54) einen Verbindungsabschnitt (542) und einen Eingriffsabschnitt (544) hat, jeder von den Verbindungsabschnitten (542) zwischen einem Eingriffsabschnitt (544) und der korrespondierenden Seitenwand (522) des Basiskörpers (52) angeordnet ist, und eine Dicke von jedem Verbindungsabschnitt (542) größer als jene von jedem Eingriffsabschnitt (544) ist.
  4. Durchflussregulierungsventil (100) des Gasherds gemäß Anspruch 3, wobei jedes von den ersten Anschlussteilen (54) ein Gewindeloch (546) hat, jedes von den zweiten Anschlussteilen (622) ein Bohrloch (622a) hat, und zwei Bolzen (622b) in jeweils zugeordneter Weise durch die zwei Bohrlöcher (622a) hindurchgehen und in die zwei Gewindelöcher (546) hinein eingeschraubt sind, so dass jedes von den ersten Anschlussteilen (54) und jedes von den zweiten Anschlussteilen (622) miteinander verbunden sind.
  5. Durchflussregulierungsventil (100) des Gasherds gemäß Anspruch 3, wobei die Dicke (A) jedes Verbindungsabschnitts (542) sukzessive von jedem Eingriffsabschnitt (544) aus hin zu der korrespondierenden Seitenwand (522) des Basiskörpers (52) zunimmt.
  6. Durchflussregulierungsventil (100) des Gasherds gemäß Anspruch 1, wobei das Anschlussende (12) des Ventilkörpers (10) zwei Gewindebohrungen (12b) hat, die fixierte Basis (40) zwei Bohrlöcher (48) aufweist, welche in jeweils zugeordneter Weise mit den zwei Gewindebohrungen (12b) korrespondieren, und zwei Bolzen (50) in jeweils zugeordneter Weise durch die zwei Bohrlöcher (48) hindurchgehen und in die zwei Gewindelöcher (12b) hinein eingeschraubt sind.
  7. Durchflussregulierungsventil (100) des Gasherds gemäß Anspruch 6, wobei die fixierte Basis (40) einen Basiskörper (52) aufweist, welcher einen Aufnahmehohlraum (524) hat, eine Öffnung des Aufnahmehohlraums (524) dem Motorkörper (62) zugewandt ist, und das Durchgangsloch (46) und mindestens eines von den zwei Bohrlöchern (48) an einer Innenfläche des Aufnahmehohlraums (524) angeordnet sind.
  8. Durchflussregulierungsventil (100) des Gasherds gemäß Anspruch 2, wobei das Verbindungsende (26) des Stopfenelements (20) ein Vertiefungsloch (26a) und eine Kerbe (26b) hat, welche miteinander in Verbindung stehen, das Verbindungselement (30) durch das Vertiefungsloch (26a) hindurchgeht, und sich ein Teil des Blocks (32) in die Kerbe (26b) hinein erstreckt.
  9. Durchflussregulierungsventil (100) des Gasherds gemäß Anspruch 1, wobei der Motorkörper (62) mit der zweiten Seite (44) der fixierten Basis (40) integral verbunden ist.
EP19191495.1A 2019-08-13 2019-08-13 Durchflussregelventil für gasofen Active EP3779279B1 (de)

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EP3779279B1 true EP3779279B1 (de) 2022-03-09

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Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9032991B2 (en) * 2011-05-03 2015-05-19 Emerson Electric Co. Field adjustable gas valve and method of control
MX2015016853A (es) * 2015-01-13 2016-07-12 Mac Valves Inc Valvula de control de flujo balanceado, operada por motor de pasos.
TWI669464B (zh) * 2018-01-25 2019-08-21 關隆股份有限公司 瓦斯器具與瓦斯閥及其控制方法

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