CN112943937A - Electric fire regulating valve - Google Patents

Electric fire regulating valve Download PDF

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Publication number
CN112943937A
CN112943937A CN202011215156.3A CN202011215156A CN112943937A CN 112943937 A CN112943937 A CN 112943937A CN 202011215156 A CN202011215156 A CN 202011215156A CN 112943937 A CN112943937 A CN 112943937A
Authority
CN
China
Prior art keywords
valve body
sub
valve
valve seat
opening direction
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.)
Pending
Application number
CN202011215156.3A
Other languages
Chinese (zh)
Inventor
丹下雅斗
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.)
Rinnai Corp
Original Assignee
Rinnai Corp
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 Rinnai Corp filed Critical Rinnai Corp
Publication of CN112943937A publication Critical patent/CN112943937A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F23K5/002—Gaseous fuel
    • F23K5/007—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/36—Valve members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/42—Valve seats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/12—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2400/00—Pretreatment and supply of gaseous fuel
    • F23K2400/20—Supply line arrangements
    • F23K2400/201—Control devices
    • 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

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Lift Valve (AREA)

Abstract

The invention provides an electric fire behavior adjusting valve, which comprises: a main valve body (2) which can freely move in a closing direction approaching to the valve seat and an opening direction separating from the valve seat, a sub valve body opposite to the main valve body in the opening direction, a straight moving body contacting with the sub valve body from the opening direction, and a stepping motor driving the straight moving body. The main valve body has: even if the gas flows from the upstream side to the downstream side of the main valve body through the bypass hole (24) and the sub valve seat (25) with the bypass hole opened in the state of being seated on the valve seat, the full-closing state of the sub valve body seated on the sub valve seat while the main valve body is seated on the valve seat can be switched, and the sealing failure in the full-closing state can be prevented. A gasket (32) made of an elastic material is attached to the sub-valve body, and the sub-valve body is caused to seat the sub-valve seat at the position of the gasket. When the origin is returned after the stepping motor is stopped in the fully closed state, a valve body (31) of a sub-valve body made of a hard material is brought into contact with a sub-valve seat.

Description

Electric fire regulating valve
Technical Field
The present invention relates to an electric fire control valve provided in a gas supply path for supplying gas to a burner of a stove.
Background
Conventionally, patent document 1 discloses an electric fire control valve of this type, which includes: a main valve body provided in a valve chamber in a valve housing so as to be movable in a closing direction approaching a valve seat at one end of the valve chamber and in an opening direction separating from the valve seat; a sub-valve body opposed to the main valve body in an opening direction; a 1 st urging mechanism that urges the main valve body in an opening direction; a 2 nd biasing mechanism that biases the sub-valve body in an opening direction with respect to the main valve body with a stronger force than the 1 st biasing mechanism; a stopper mechanism that stops movement of the sub-valve body in an opening direction with respect to the main valve body at a fixed position; a direct moving body abutting the sub valve body from the opening direction; and a stepping motor for driving the linear motion body in the opening direction and the closing direction by the linkage mechanism. In this electrodynamic type fire control valve, the main valve body has: a bypass hole for allowing the gas to flow from the upstream side to the downstream side even when the main valve body is seated on the valve seat, and a sub valve seat on which the sub valve body is seated and which opens the bypass hole. The burner is switched to a fully closed state in which the main valve body is seated on the valve seat and the sub valve body is seated on the sub valve seat, thereby stopping the supply of gas to the burner.
However, in the gas burner described in patent document 1, the sub-valve seat is formed in the main body portion of the main valve body formed of a hard member, and the sub-valve body is entirely formed of a hard member. Therefore, even when the sub-valve body is seated on the sub-valve seat in the fully closed state, the hard members abut against each other, and the gas flowing to the bypass hole cannot be completely blocked, and a sealing failure in the fully closed state occurs.
Patent document
Patent document 1: japanese patent laid-open publication No. 2015-129626
Disclosure of Invention
The present invention has been made in view of the above problems, and an object thereof is to provide an electric fire control valve capable of preventing a sealing failure in a fully closed state.
In order to solve the above problems, an electric fire control valve provided in a gas supply path for supplying gas to a burner of a cooking stove according to the present invention includes: a main valve body provided in a valve chamber in a valve housing so as to be movable in a closing direction approaching a valve seat at one end of the valve chamber and in an opening direction separating from the valve seat; a sub-valve body opposed to the main valve body in an opening direction; a 1 st urging mechanism that urges the main valve body in an opening direction; a 2 nd biasing mechanism that biases the sub-valve body in an opening direction with respect to the main valve body with a stronger force than the 1 st biasing mechanism; a stopper mechanism that stops movement of the sub-valve body in an opening direction with respect to the main valve body at a fixed position; a direct moving body abutting the sub valve body from the opening direction; and a stepping motor for driving the sub-valve body in the opening direction and the closing direction by means of a linkage mechanism, wherein the main valve body comprises: even if the main valve body is seated on the valve seat, the gas flows from the upstream side of the main valve body to the bypass hole on the downstream side, and the sub valve seat which can be seated on the sub valve body and opens the bypass hole, and the full-closed state in which the main valve body is seated on the valve seat and the sub valve body is seated on the sub valve seat can be switched, characterized in that the sub valve body is provided with: and a gasket made of an elastic material facing the sub valve seat, wherein the sub valve body is seated on the sub valve seat at the gasket position.
According to the electric fire control valve of the present invention, unlike the above-described conventional examples in which hard members are in contact with each other, in the fully closed state, the elastic material gasket provided in the sub-valve body is seated on the sub-valve seat provided in the main valve body, and therefore, it is possible to reliably prevent a sealing failure in the fully closed state.
However, when the origin of the stepping motor is returned, the stepping motor may drop when in the fully closed state, but as in the present invention, the sub valve body is seated on the sub valve seat at the elastic material gasket position in the fully closed state, and the compression of the gasket is unbalanced when dropping, and the origin of the stepping motor is not determined.
Therefore, in the present invention, it is preferable that the sub-valve body includes a valve body formed of a hard material, the valve body including: the valve body has a hollow portion whose tip end facing the sub-valve seat is open, the gasket is attached to the hollow portion such that the tip end portion of the gasket facing the sub-valve seat protrudes from the tip end of the valve body by a predetermined compression amount, and when the stepping motor is dropped and the origin is returned in the fully closed state, the amount of compression of the gasket is the predetermined compression amount, and the tip end of the valve body abuts against the sub-valve seat. Accordingly, the influence of the unevenness of the compression condition of the gasket is not generated, and the origin position of the stepping motor is fixed, so that the fire can be accurately adjusted based on the origin position.
Drawings
Fig. 1 is a side view in cross-section of an electric fire control valve according to an embodiment of the present invention.
Fig. 2 is a perspective view of an exploded state of a main part of the electric fire control valve according to the embodiment.
Description of the reference numerals
A … electric fire control valve, B … burner, G … gas supply passage, 1 … valve housing, 13 … valve chamber, 14 … valve seat, 2 … main valve body, 25 … auxiliary valve seat, 3 … auxiliary valve body, 31 … valve body, 31a … hollow part, 32 … gasket, front end part of 32a … gasket, 41… 1 st forcing mechanism, 42… 2 nd force application mechanism, 5 … stop mechanism, 6 … straight body, 7 … linkage mechanism and 8 … stepping motor.
Detailed Description
Referring to fig. 1, a is an electric fire control valve according to an embodiment of the present invention provided in a gas supply passage G for supplying gas to a burner such as a stove burner. The fire control valve a includes a valve housing 1, and the valve housing 1 includes: an inlet 11 and an outlet 12 connected to the upstream and downstream portions of the gas supply passage G, respectively, are provided in the valve housing 1: a valve chamber 13 communicating with the inlet 11, and a valve seat 14 at one end of the valve chamber 13. The valve seat 14 is provided with: a valve hole 15 communicating with the outlet 12.
Referring to fig. 2, the electric fire control valve a includes: a main valve body 2 provided in a valve chamber 13 so as to be movable in a closing direction (right side in fig. 1) approaching a valve seat 14 and in an opening direction (left side in fig. 1) separating from the valve seat 14; a sub-valve body 3 opposed to the main valve body 2 in the opening direction; 1 st force application mechanism 41A main valve body 2 which is urged in an opening direction; no. 2 force application mechanism 42Using a force applying mechanism 4 of a type 11A stronger force urges the sub-valve body 3 in the opening direction with respect to the main valve body 2; a stopper mechanism 5 that stops movement of the sub-valve body 3 in an opening direction with respect to the main valve body 2 at a fixed position; a direct movement body 6 that abuts the sub-valve body 3 from the opening direction; and a stepping motor 8 that drives the linear motion body 6 in the opening direction and the closing direction via the interlocking mechanism 7.
The main valve body 2 includes a valve main body 21 made of a hard material such as hard resin. The valve body 21 is provided with: a needle body 22 insertable into the valve hole 15. The valve body 21 is externally fitted and fixed with: an annular stopper portion 23 formed of an elastic material such as rubber and capable of being seated on the valve seat 14, and the annular stopper portion 23 is prevented from coming off by the flange portion 22 formed at the end in the opening direction of the needle body portion 22. The valve body 21 is formed with: a bypass hole 24 for allowing the fuel gas to flow from the upstream side to the downstream side of the main valve body 2 even in a state where the main valve body 2, that is, the closing portion 23 is seated on the valve seat 14, and a sub valve seat 25 on which the sub valve body 3 can be seated and which opens the bypass hole 24. The bypass hole 24 is provided with: a pinhole 24a defining the minimum flame intensity of the burner is coupled to an end of the valve body 21 in the opening direction: a guide cylinder portion 26 made of a hard material and extending in the opening direction so as to surround the sub-valve body 3. Projecting from the outer peripheral surface of the guide cylinder portion 26 are: a plurality of convex strips 26a in sliding contact with the peripheral wall surface of the valve chamber 13, and a base end portion of the guide tube portion 26 is formed with: a through hole 26b communicating the inside and outside of the guide cylinder portion 26.
The sub-valve body 3 is provided with: and a spacer 32 made of an elastic material such as rubber and facing the sub-valve seat 25. And the sub-valve body 3 is seated on the sub-valve seat 25 at the position of the gasket 32, and if described in more detail, the sub-valve body 3 has: the valve body 31 is made of a hard material such as hard resin. The valve body 31 has: a hollow portion 31a that opens at the tip of the valve body 31 facing the sub-valve seat 25. The spacer 32 is attached to the hollow portion 31 a. As shown in fig. 2, in the free state, the tip portion 32a of the spacer 32 facing the sub-valve seat 25 protrudes by a predetermined compression amount from the tip portion of the valve main body 31 facing the sub-valve seat 25. In the present embodiment, the gasket 32 is attached to the hollow portion 31a in the injection molding at the time of molding the valve body 31, but the gasket 32 may be attached to be fitted into the hollow portion 31a after molding the valve body 31. In this case, an adhesive may be applied between the valve body 31 and the gasket 32, and the two may be joined together. Further, the sub-valve body 3 is provided with: a guide 33 integral with the valve body 31, the guide 33 being in sliding contact with the inner peripheral surface of the guide cylinder 26 of the main valve body 2.
The stopper mechanism 5 is constituted by a window hole 51 formed in the guide cylinder portion 26 of the main valve body 2, and a claw portion 52 provided to protrude from the outer peripheral surface of the sub valve body 3 and inserted into the window hole 51 with play. When the sub-valve body 3 moves in the opening direction with respect to the main valve body 2 and the claw portion 52 engages with the edge of the window hole 51 in the opening direction, the sub-valve body 3 does not move further in the opening direction with respect to the main valve body 2.
The end surface of the direct acting body 6 in the closing direction is formed as a convex surface of a spherical surface, and this convex surface is brought into contact with the end surface of the sub-valve body 3 in the opening direction. The link mechanism 7 is constituted by a feed screw mechanism, and the feed mechanism is constituted by a male screw 71 connected to an output shaft 81 of the stepping motor 8, and a slider 72 to which the male screw 71 is screwed and fixed to be prevented from rotating. The slider 72 abuts on: a diaphragm 61 for partitioning the arrangement portion of the interlocking mechanism 7 from the valve chamber 13, and the linear actuator 6 is connected to the diaphragm 61.
As shown in fig. 1, the main valve body 2 (more precisely, the closing portion 23 of the main valve body 2) is seated on the valve seat 14, the sub valve body 3 is seated on the sub valve seat 25 of the main valve body 2, and the bypass hole 24 is closed, and at this time, the state is the full-closed state of the electric fire control valve a, and the furnace is stoppedThe burner B supplies gas. When the linear actuator 6 is moved in the opening direction by the stepping motor 8 via the interlocking mechanism 7 from the fully closed state, the sub-valve body 3 passes through the second urging mechanism 42Follows the linear motion body 6 and moves in the opening direction. Until the movement of the sub-valve body 3 in the opening direction with respect to the main valve body 2 is stopped by the stopper mechanism 5, the movement of the main valve body 2 in the opening direction is stopped by the 2 nd biasing mechanism 42Is prevented. Therefore, the main valve body 2 is maintained in a state of being seated on the valve seat 14, and the sub valve body 3 is separated from the sub valve seat 25, and the bypass hole 24 is opened. Accordingly, the electric fire control valve a becomes: the fire of the burner B is brought to the minimum fire state. After the sub-valve body 3 is stopped from moving in the opening direction with respect to the main valve body 2 by the stopper mechanism 5, if the sub-valve body 3 is further moved in the opening direction, the main valve body 2 passes the first biasing mechanism 41The main valve body 2 is separated from the valve seat 14 by the biasing force of the biasing member to follow the sub valve body 3 and move in the opening direction, and the flame of the burner B gradually increases.
Here, if the electric fire control valve a of the present embodiment is in the fully closed state, the sub-valve body 3 is seated on the sub-valve seat 25 at the position of the gasket 32. Therefore, unlike the above-described conventional example in which the sub-valve seat 25 made of a hard material of the main valve body 2 abuts against the portion made of a hard material of the sub-valve body 3, it is possible to reliably prevent a sealing failure in the fully closed state.
In addition, the stepping motor 8 is periodically stepped down in the fully closed state to return to the origin. In the present embodiment, when the origin is returned, the amount of compression of the spacer 32 of the sub-valve body 3 is the predetermined amount of compression, and as shown in fig. 1, the tip of the valve main body 31 of the sub-valve body 3 abuts against the sub-valve seat 25, whereby the origin position of the stepping motor 8 can be fixed without being affected by the imbalance in the compression of the spacer 32, and the fire can be accurately adjusted based on the origin position. Further, when the origin is returned, the stopper portion 23 of the main valve body 2 is also compressed, and the flange portion 22a is brought into contact with the valve seat 14.
While the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited thereto. For example, in the above-described embodiment, the interlocking mechanism 7 is constituted by the feed screw mechanism, but may be constituted by a member other than the feed screw mechanism such as a rack and pinion mechanism or a cam mechanism.

Claims (2)

1. An electric fire adjusting valve is arranged on a gas supply path of a stove burner,
the electric fire behavior adjusting valve is provided with:
a main valve body provided in a valve chamber in a valve housing so as to be movable in a closing direction approaching a valve seat at one end of the valve chamber and in an opening direction separating from the valve seat;
a sub-valve body opposed to the main valve body in an opening direction;
a 1 st urging mechanism that urges the main valve body in an opening direction;
a 2 nd biasing mechanism that biases the sub-valve body in an opening direction with respect to the main valve body with a stronger force than the 1 st biasing mechanism;
a stopper mechanism that stops movement of the sub-valve body in an opening direction with respect to the main valve body at a fixed position;
a direct moving body abutting the sub valve body from the opening direction; and
a stepping motor for driving the linear motion body in the opening direction and the closing direction by means of the linkage mechanism,
the main valve body has: even if the main valve body is seated on a valve seat, a bypass hole for allowing the gas to flow from the upstream side to the downstream side of the main valve body, and a sub valve seat on which the sub valve body is seated and which opens the bypass hole,
it is possible to switch to: a fully closed state in which the main valve body is seated on the valve seat and the sub valve body is seated on the sub valve seat,
the auxiliary valve body is provided with: a gasket made of an elastic material opposed to the sub-valve seat,
the sub-valve body is seated on the sub-valve seat at the gasket position.
2. The electric fire-regulating valve according to claim 1, wherein the sub-valve body includes a valve main body made of a hard material,
the valve body has: a hollow portion opened at a tip end of the valve body facing the sub-valve seat,
the gasket is attached to the hollow portion such that a front end portion of the gasket facing the sub-valve seat projects from a front end of the valve body by a predetermined compression amount,
when the stepping motor is dropped and the origin is returned in the fully closed state, the amount of compression of the gasket is the predetermined amount of compression, and the tip of the valve body abuts against the sub-valve seat.
CN202011215156.3A 2019-12-10 2020-11-04 Electric fire regulating valve Pending CN112943937A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019222595A JP7393194B2 (en) 2019-12-10 2019-12-10 Electric thermal power control valve
JP2019-222595 2019-12-10

Publications (1)

Publication Number Publication Date
CN112943937A true CN112943937A (en) 2021-06-11

Family

ID=76234625

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011215156.3A Pending CN112943937A (en) 2019-12-10 2020-11-04 Electric fire regulating valve

Country Status (3)

Country Link
JP (1) JP7393194B2 (en)
KR (1) KR20210073444A (en)
CN (1) CN112943937A (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60196481A (en) * 1984-03-19 1985-10-04 Ckd Corp Solenoid valve
JPH06109163A (en) * 1992-09-28 1994-04-19 Toto Ltd Flow rate regulating valve
JP2004204872A (en) * 2002-12-24 2004-07-22 Sankyo Seiki Mfg Co Ltd Motor controller for flow rate controller
JP6019432B2 (en) * 2013-12-05 2016-11-02 リンナイ株式会社 Gas flow control device
JP7000231B2 (en) * 2018-04-02 2022-01-19 リンナイ株式会社 How to adjust the heating power in a cooking device

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Publication number Publication date
KR20210073444A (en) 2021-06-18
JP7393194B2 (en) 2023-12-06
JP2021092341A (en) 2021-06-17

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