CN113513756A - Burner for stove and gas stove - Google Patents

Burner for stove and gas stove Download PDF

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Publication number
CN113513756A
CN113513756A CN202110267694.5A CN202110267694A CN113513756A CN 113513756 A CN113513756 A CN 113513756A CN 202110267694 A CN202110267694 A CN 202110267694A CN 113513756 A CN113513756 A CN 113513756A
Authority
CN
China
Prior art keywords
burner
annular wall
flame
flame hole
cover member
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
CN202110267694.5A
Other languages
Chinese (zh)
Inventor
柴山总一郎
浅井一浩
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 CN113513756A publication Critical patent/CN113513756A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/06—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with radial outlets at the burner head
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/48—Nozzles
    • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • 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
    • F24C3/08—Arrangement or mounting of burners
    • F24C3/085—Arrangement or mounting of burners on ranges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/14—Special features of gas burners
    • F23D2900/14003—Special features of gas burners with more than one nozzle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers

Abstract

The burner for a stove is provided with upper and lower flame ports (4U, 4L) which are opened on the outer peripheral surface of a burner cover (3) which is arranged on a burner main body (2) and comprises an upper cover component (3U) and a lower cover component (3L), wherein the upper flame port is divided into two layers by a first annular wall (31) which is vertically arranged on the lower cover component1) A lower flame hole part (4Ub) composed of the formed groove, and a second annular wall (31) arranged on the upper cover component in a downward hanging way2) Upper flame port part formed by formed grooveThe upper and lower portions of (4Ua) can improve the combustibility of the upper flame ports. The inclination angle thetaa of the upper bottom surface of the groove serving as the upper flame hole portion is set to be larger than the inclination angle thetab of the upper end surface of the first annular wall. Preferably, the depth Db of the groove serving as the lower flame hole portion recessed from the upper end of the first annular wall is set smaller than the depth Da of the groove serving as the upper flame hole portion recessed from the lower end of the second annular wall.

Description

Burner for stove and gas stove
Technical Field
The present invention relates to a burner for a range and a gas range, the burner for the range comprises: a burner main body to which a mixed gas is supplied; and a burner cover which is placed on the burner main body and has upper and lower flame ports opened on the outer peripheral surface.
Background
In such a range burner, the burner cover is generally configured to include an annular lower cover member and an annular upper cover member, and a lower flame port is defined between the burner body and the lower cover member, and an upper flame port is defined between the lower cover member and the upper cover member.
Further, conventionally, as such a burner for a range, there is known, from patent document 1: a first annular wall is vertically arranged on the outer periphery of the upper surface of a lower side cover component, a second annular wall which is positioned on the first annular wall is arranged on the outer periphery of the lower surface of the upper side cover component in a hanging mode, an upper layer flame opening is divided into an upper flame opening part and a lower flame opening part, a plurality of grooves which are formed in the first annular wall and are concave downwards from the upper end of the first annular wall to form a lower flame opening part are formed in the first annular wall at intervals in the circumferential direction, and a plurality of grooves which are formed in the second annular wall and are concave upwards from the lower end of the second annular wall to form an upper flame opening part are formed in the second annular wall at intervals in the circumferential direction and are staggered relative to the grooves to form the lower flame opening part in the circumferential direction.
However, in the burner for a range described in patent document 1, the supply of secondary air to the flame in the upper flame hole portion is easily blocked by the flame in the lower flame hole portion. Therefore, the combustion performance of the upper flame ports, which effectively heat the cooking container as the object to be heated positioned above the burner for the cooktop, is deteriorated. As a result, it is difficult to improve the heat efficiency (heating efficiency of the cooking container).
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2019-143959
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a burner for a range, which can improve combustibility in an upper flame hole portion to improve thermal efficiency, and a gas range having the burner for a range mounted thereon.
In order to solve the above problem, a first aspect of the present invention is a burner for a range, comprising: a burner main body to which a mixed gas is supplied; and a burner cover which is placed on the burner body and has upper and lower flame ports opened on an outer peripheral surface, wherein the burner cover includes an annular lower cover member and an annular upper cover member, a lower flame port is defined between the burner body and the lower cover member, and an upper flame port is defined between the lower cover member and the upper cover member, the burner for the cooking stove is characterized in that a first annular wall is vertically provided on an outer peripheral portion of an upper surface of the lower cover member, a second annular wall which is located on the first annular wall is provided on an outer peripheral portion of a lower surface of the upper cover member in a downward hanging manner, the upper flame port is divided into upper and lower portions of an upper flame port portion and a lower flame port portion, and a plurality of grooves which are recessed downward from an upper end of the first annular wall to form the lower flame port portion are formed on the first annular wall at intervals in a circumferential direction, a plurality of grooves serving as upper flame ports are formed in the second annular wall at intervals in the circumferential direction and are offset in the circumferential direction with respect to the grooves serving as the lower flame ports, the grooves being recessed upward from the lower end of the second annular wall, the upper end surface of the first annular wall and the upper bottom surfaces of the grooves serving as the upper flame ports are inclined upward toward the radially outer side, and the inclination angle of the upper bottom surfaces of the grooves serving as the upper flame ports toward the upward direction is larger than the inclination angle of the upper end surface of the first annular wall toward the upward direction.
A second aspect of the present invention is a gas range including the burner for a range of the first aspect.
According to the present invention (first invention), the flame in the upper flame port portion is easily lifted upward and separated from the flame in the lower flame port portion by increasing the inclination angle of the upper bottom surface of the groove serving as the upper flame port portion toward the upper side. Therefore, the flame in the lower flame port portion can be prevented from obstructing the supply of the secondary air to the flame in the upper flame port portion. Therefore, the combustion performance of the upper flame hole portion, which effectively heats the cooking container located above the burner for the range, is improved. As a result, the effect of the flame at the upper flame hole portion being easily lifted toward the cooking container is supplemented, and the thermal efficiency is improved.
In addition, in the present invention, it is preferable that a recess depth of the groove to be the lower flame port portion from the upper end of the first annular wall is smaller than a recess depth of the groove to be the upper flame port portion from the lower end of the second annular wall. Accordingly, the flame in the lower flame port portion is reduced, and the flame can be more effectively prevented from obstructing the supply of the secondary air to the flame in the upper flame port portion. Therefore, the combustibility of the upper flame ports becomes better, and the thermal efficiency can be further improved.
Drawings
Fig. 1 is a perspective view of a main part of a gas range on which a burner for a range according to an embodiment of the present invention is mounted.
Fig. 2 is a sectional view taken along line II-II of fig. 1.
Fig. 3 is a perspective view of a burner for a range according to an embodiment.
Fig. 4 is an enlarged sectional view of a main portion of a burner for a range of an embodiment.
Description of the reference numerals
Burner for 1 … stove, burner main body 2 …, burner cover 3 …, lower cover member 3L …, upper cover member 3U …, and 311… first annular wall, 312… second annular wall, 4U … upper flame ports, 4Ua … upper flame port portion, 4Ub … lower flame port portion, 4L … lower flame port, the angle of inclination of the upper bottom surface of the groove of theta a … upper flame port portion, the angle of inclination of the upper end surface of theta b … first annular wall, the depth of recess of Da … upper flame port portion groove, and the depth of recess of Db … lower flame port portion groove.
Detailed Description
Referring to fig. 1 and 2, TP is a top plate covering an upper surface of a range body, not shown, of the gas range. In a gas range, a range burner 1 for heating a cooking vessel such as a pot of a hob G placed on a top plate TP is mounted so as to face a burner opening TPa opened in the top plate TP.
Referring again to fig. 3, the range burner 1 includes: a burner main body 2 to which a mixed gas is supplied; and a burner cover 3 mounted on the burner body 2 and protruding above the top plate TP through the burner opening TPa of the top plate TP. A plurality of flame ports 4U and 4L are provided in two stages in the circumferential direction at intervals on the outer circumferential surface of the burner cover 3. Further, only the lower flame ports 4L are formed in portions of a plurality of locations in the circumferential direction of the burner cover 3, which are located in the same orientation as the plurality of burner claws Ga of the burner block G, and the upper flame ports 4U are not formed, so that incomplete combustion due to contact of flames with the burner claws Ga is prevented.
More specifically, the burner main body 2 has an inner and outer triple cylindrical body of the outer cylindrical body 21, the inner cylindrical body 22, and the intermediate cylindrical body 23. The combustor cover 3 is configured to include: an annular lower cover member 3L having a tube portion 3La, which is provided with a central tube 23 of the burner main body 2 and is suspended from the inner circumferential portion thereof; and an annular upper cover member 3U having a tube portion 3Ua that is provided with an inner circumferential portion thereof and is fitted into the inner tube 22 of the burner main body 2 in a hanging manner. A lower flame port 4L is defined between the outer cylinder 21 of the burner body 2 and the lower cover member 3L, and an upper flame port 4U is defined between the lower cover member 3L and the upper cover member 3U.
The upper flame ports 4U are divided into upper and lower portions of upper flame port portions 4Ua and lower flame port portions 4 Ub. Specifically, the first annular wall 31 is erected on the outer peripheral portion of the upper surface of the lower cover member 3L1A first annular wall 31 is provided so as to hang down from the outer peripheral portion of the lower surface of the upper cover member 3U1Second annular wall 312. And, in the first annular wall 311A plurality of secondary first annular walls 31 are formed at intervals in the circumferential direction1The upper end of the upper flame hole 4U is recessed downward to form a groove of the lower flame hole portion 4Ub of the upper flame hole 4U. This is achieved byOutside, in the second annular wall 312A plurality of secondary annular walls 31 are formed at intervals in the circumferential direction and are circumferentially displaced from the groove serving as the lower flame port portion 4Ub2The lower end of the upper flame port 4U is recessed upward to form a groove of the upper flame port portion 4Ua of the upper flame port 4U. Thereby, the upper flame port portion 4Ua and the lower flame port portion 4Ub are arranged in a staggered manner in the circumferential direction.
A third annular wall 31 is provided so as to hang down from the outer peripheral portion of the lower surface of the lower cover member 3L and is located at the upper end of the outer cylinder 21 of the burner main body 23. In the third annular wall 313A plurality of secondary annular walls 31 are formed at intervals in the circumferential direction3The lower end of the lower flame port 4L is recessed upward.
Further, the range burner 1 is provided with an ignition electrode 11 and a thermocouple 12 as a flame monitoring element. A target portion 32 (see fig. 3) facing the ignition electrode 11 is provided to protrude from 1 portion in the circumferential direction of the lower cover member 3L. Then, the lower flame ports 4L are ignited by spark discharge between the ignition electrode 11 and the target portion 32. Moreover, a brim 33 for preventing boiling spill from dropping to the ignition electrode 11 is provided so as to protrude from the upper cover member 3U at 1 position in the circumferential direction corresponding to the installation portion of the ignition electrode 11. Further, a cover 13 covering the burner opening TPa from above is inserted outside the burner body 2 to prevent boiling spills from falling through a gap between the burner opening TPa and the range burner 1.
Further, the burner 1 for a range includes: a first mixing pipe 5U for the upper flame ports 4U, which communicates with a space between the inner cylinder 22 and the intermediate cylinder 23 of the burner main body 2; and a second mixing pipe 5L for the lower flame ports 4L, which communicates with a space between the outer cylinder 21 and the intermediate cylinder 23 of the burner main body 2. The fuel gas is supplied to the first mixing pipe 5U via a first branch 6U branched from the common gas supply passage 6. The fuel gas is supplied to the second mixing pipe 5L via a second branch 6L branched from the gas supply path 6. Then, the fuel gas and the primary air sucked into the mixing pipes 5U and 5L are mixed in the first mixing pipe 5U and the second mixing pipe 5L. The mixed gas from the first mixing pipe 5U is ejected from the upper flame ports 4U through the space between the inner cylinder 22 and the intermediate cylinder 23 of the burner main body 2 and the space between the lower cover member 3L and the upper cover member 3U. The mixed gas from the second mixing pipe 5L is ejected from the lower flame ports 4L through the space between the outer cylinder 21 and the intermediate cylinder 23 of the burner main body 2 and the space between the outer cylinder 21 and the lower cover member 3L.
The gas supply path 6 is provided with: an electromagnetic safety valve 61 that is forcibly opened at the time of ignition and is closed when a misfire is detected due to a decrease in electromotive force of the thermocouple 12; and a source valve 62 that is open at ignition and closed at extinction. The first branch passage 6U and the second branch passage 6L are inserted with a first flow rate adjustment valve 63U and a second flow rate adjustment valve 63L, respectively, which are operated by an operation member including a lever and a knob for adjusting heating power, not shown, to change the opening degree. The operating member is operable from a low fire position to a high fire position. If the operating member is operated from the low fire position to the high fire position, the opening degree of the second flow rate adjustment valve 63L is gradually increased from the minimum opening degree. On the other hand, the first flow rate adjustment valve 63U is not opened until the operating member reaches the predetermined intermediate position, and is suddenly opened to the predetermined opening degree immediately after the operating member has exceeded the intermediate position, and the opening degree is gradually increased by the subsequent operation to the strong fire position. When the operating member is operated from the low flame position to the intermediate position, the mixed gas is supplied to the upper flame ports 4U, and the flames move from the lower flame ports 4L to the upper flame ports 4U.
Referring to fig. 4, in the present embodiment, the first annular wall 311And the upper bottom surface of the groove which becomes the upper flame port portion 4Ua is inclined upward toward the radially outer side. The inclination angle θ a of the upper bottom surface of the groove serving as the upper flame hole portion 4Ua is set to be larger than the first annular wall 311The upper end surface of (b) is directed upward by an inclination angle θ b. In addition, a groove to be the lower flame hole portion 4Ub is formed from the first annular wall 311Is set to be smaller than the groove which becomes the upper flame port portion 4Ua from the second annular wall 312The lower end of (a) is recessed by a recessed depth Da.
Accordingly, by increasing the inclination angle of the upper bottom surface of the groove which becomes the upper flame port portion 4Ua toward the upper side, the flame of the upper flame port portion 4Ua (flame formed by combustion of the mixed gas jetted from the upper flame port portion 4Ua) is easily lifted upward and separated from the flame of the lower flame port portion 4 Ub. Therefore, the flame of the lower flame port portion 4Ub can be suppressed from obstructing the supply of the secondary air to the flame of the upper flame port portion 4 Ua. Therefore, the upper flame hole portion 4Ua for effectively heating the cooking container placed on the hob G has good combustibility. As a result, the thermal efficiency (heating efficiency of the cooking vessel) is improved in addition to the effect that the flames of the upper flame port portion 4Ua easily rise toward the cooking vessel. Further, by reducing the recessed depth Db of the groove which becomes the lower flame port portion 4Ub, the flame of the lower flame port portion 4Ub is reduced, and this flame can be more effectively suppressed from hindering the supply of the secondary air to the flame of the upper flame port portion 4 Ua. Therefore, the combustibility of the upper flame port portion 4Ua becomes better, and the thermal efficiency can be further improved.
The embodiments of the present invention have been described above with reference to the drawings, but the present invention is not limited thereto. For example, in the above embodiment, the mixed gas is supplied from the first mixing pipe 5U and the second mixing pipe 5L to the upper flame ports 4U and the lower flame ports 4L, respectively, but the mixed gas may be supplied from a common mixing pipe to the upper flame ports 4U and the lower flame ports 4L.

Claims (3)

1. A burner for a range, comprising: a burner main body to which a mixed gas is supplied; and a burner cover which is placed on the burner body and has upper and lower flame ports opened on the outer peripheral surface, wherein the burner cover comprises an annular lower cover member and an annular upper cover member, the lower flame port is formed between the burner body and the lower cover member, the upper flame port is formed between the lower cover member and the upper cover member,
the burner for a cooking range is characterized in that,
a first annular wall is vertically arranged on the outer periphery of the upper surface of the lower side cover component, a second annular wall which is positioned on the first annular wall is vertically arranged on the outer periphery of the lower surface of the upper side cover component,
the upper flame hole is divided into an upper flame hole part and a lower flame hole part, a plurality of grooves which are recessed downwards from the upper end of the first annular wall and become the lower flame hole part are formed on the first annular wall in a mode of having a circumferential interval, a plurality of grooves which are recessed upwards from the lower end of the second annular wall and become the upper flame hole part are formed on the second annular wall in a mode of having a circumferential interval and being staggered in the circumferential direction relative to the grooves which become the lower flame hole part,
the upper end surface of the first annular wall and the upper bottom surface of the groove serving as the upper flame hole portion are inclined upward toward the radially outer side, and the upward inclination angle of the upper bottom surface of the groove serving as the upper flame hole portion is larger than the upward inclination angle of the upper end surface of the first annular wall.
2. The burner for a range of claim 1,
the groove to become the lower flame port portion is recessed from the upper end of the first annular wall by a depth smaller than the recess depth from the lower end of the second annular wall.
3. A gas stove is characterized in that a gas stove body is provided with a gas inlet and a gas outlet,
a burner for a range according to claim 1 or 2 is mounted.
CN202110267694.5A 2020-04-10 2021-03-12 Burner for stove and gas stove Pending CN113513756A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2020071192A JP7384737B2 (en) 2020-04-10 2020-04-10 Burners for stoves and gas stoves
JP2020-071192 2020-04-10

Publications (1)

Publication Number Publication Date
CN113513756A true CN113513756A (en) 2021-10-19

Family

ID=78061325

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110267694.5A Pending CN113513756A (en) 2020-04-10 2021-03-12 Burner for stove and gas stove

Country Status (3)

Country Link
JP (1) JP7384737B2 (en)
CN (1) CN113513756A (en)
TW (1) TW202138716A (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7145016B2 (en) 2018-02-20 2022-09-30 リンナイ株式会社 stove burner

Also Published As

Publication number Publication date
TW202138716A (en) 2021-10-16
JP7384737B2 (en) 2023-11-21
JP2021167700A (en) 2021-10-21

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