EP2940397B1 - Gaskessel mit funktion zur verhinderung der überhitzung eines brennerflanschs und gassaustritt - Google Patents

Gaskessel mit funktion zur verhinderung der überhitzung eines brennerflanschs und gassaustritt Download PDF

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Publication number
EP2940397B1
EP2940397B1 EP13867891.7A EP13867891A EP2940397B1 EP 2940397 B1 EP2940397 B1 EP 2940397B1 EP 13867891 A EP13867891 A EP 13867891A EP 2940397 B1 EP2940397 B1 EP 2940397B1
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EP
European Patent Office
Prior art keywords
burner
supply chamber
gas supply
gas
flange
Prior art date
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Active
Application number
EP13867891.7A
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English (en)
French (fr)
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EP2940397A1 (de
EP2940397A4 (de
Inventor
Jun Kyu Park
Dong Yong Lee
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.)
Kyungdong Navien Co Ltd
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Kyungdong Navien Co Ltd
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Publication date
Application filed by Kyungdong Navien Co Ltd filed Critical Kyungdong Navien Co Ltd
Publication of EP2940397A1 publication Critical patent/EP2940397A1/de
Publication of EP2940397A4 publication Critical patent/EP2940397A4/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating 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
    • 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
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F23D14/76—Protecting flame and burner parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • 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
    • F23D2900/00018—Means for protecting parts of the burner, e.g. ceramic lining outside of the flame tube
    • 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
    • F23D2900/14001—Sealing or support of burner plate borders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
    • F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel

Definitions

  • the present invention relates to a gas boiler in which overheating of a burner flange and gas leaking is prevented, and more particularly, to a gas boiler having a structure that is capable of being preventing a burner for receiving a pre-mixed gas from a gas supply chamber to burn the pre-mixed gas from being overheated.
  • Boilers used for providing heating and hot water in general homes may be categorized into oil boilers and gas boilers according to fuel for use.
  • the gas boilers may use LPG as fuel.
  • LNG is mostly being used for the gas boilers, which is clean fuel that is capable of minimizing air pollution because the LNG contains few sulfur contents when compared to diesel fuel or kerosene.
  • fluids are heated by using heat generated while oil and gas are being oxidized, and the fluids heated to be heat-exchanged circulate to increase an indoor temperature and supply hot water.
  • flames of the burner generated by the combustion may be shorten in length according to low load combustion. If the flames of the burner is shorten in length, the flames may overheat a surface of the burner.
  • the downward combustion type such as the condensing boiler
  • the surface (especially, a flange of the burner) of the burner is further overheated.
  • An object of the present invention is to provide a gas boiler capable of preventing a burner from being overheated by heat-exchanging a pre-mixed gas and preventing the gas from leaking while the burner tightly surface-contacts a gas supply chamber, and including a packing that has a wide choice in material.
  • the present invention suggests a gas boiler having the features of claim 1.
  • the present invention provides a gas boiler including: a burner on which a burner flange is disposed in a circumferential direction, the burner burning a pre-mixed gas; a gas supply chamber seated and coupled to an upper portion of the burner to supply the pre-mixed gas to the burner, the gas supply chamber having a chamber flange that is shape-matched to the burner flange to surface-contact the burner flange; and a sealing member disposed between the burner and the gas supply chamber to prevent the pre-mixed gas supplied from the gas supply chamber to the burner from leaking between the gas supply chamber and the burner, wherein a groove, to which the sealing member is installed, is defined in the chamber flange of the gas supply chamber; and wherein the sealing member comprises :a body and a plurality of protrusions of which one portion protrudes from the body towards the gas supply chamber and the other portion protrudes towards the burner,wherein the plurality of protrusions extends from the body,wherein the one portion of the plurality of protrusion
  • the gas boiler according to the present invention has the following effects.
  • the burner flange of the burner and the chamber flange of the gas supply chamber are shape-matched to surface-contact each other to allow heat of the burner itself to be dissipated to the chamber flange of the gas supply chamber when the burner operates, the overheating of the burner (particularly, the flange of the burner) may be prevented.
  • the leakage of the pre-mixed gas that is supplied from the gas supply chamber to the burner may be prevented from leaking between the burner and the gas supply chamber by the sealing member disposed between the burner and the gas supply chamber.
  • the burner flange may further stably surface-contact the chamber flange while being shape-matched to prevent the burner from being overheated through the heat-exchanging between the burner flange and the chamber flange.
  • the sealing member may have a wide choice of materials.
  • a special embodiment of the invention is provided with a heat dissipation fin. Since the heat dissipation fin is disposed between the burner and the gas supply chamber, the overheating of the burner may be further prevented by the heat dissipation fin that is cooled by the pre-mixed gas having a low temperature supplied from the gas supply chamber.
  • Burner 111 Burner flange 130: Gas supply chamber 131: Chamber flange 133: Groove 150: Sealing member 151: Body 153: Protrusion 170: Heat dissipation fin
  • FIGS. 1 to 4 A gas boiler according to an embodiment of the present invention is illustrated in FIGS. 1 to 4 .
  • the gas boiler includes a burner 110, a gas supply chamber 130, and a sealing member 150.
  • the gas boiler according to an embodiment of the present invention has a shape and structure as illustrated in FIG. 1 . Thus, accurate positions of the burner 110 and the gas supply chamber 130 in the gas boiler may be recognized with reference to FIG. 1 .
  • the burner 110 may receive a pre-mixed gas to burn the pre-mixed gas.
  • the burner 110 may receive the pre-mixed gas in which air is pre-mixed with a gas at an optimal combustion mixing ratio from the gas supply chamber 130 that will be described later.
  • the pre-mixed gas may be completely burnt. Thus, the burner has high combustion efficiency and may realize complete combustion at a low air ratio.
  • a metal fiber burner may be applied to the burner 110.
  • An example of the metal fiber burner is disclosed in Korean Patent Publication No. 10-2002-0069530 .
  • the above-described burner 110 is not limited to the shape thereof and may have various shapes. Also, a burner flange 111 may be disposed on a side surface of the burner 110 along a circumferential direction.
  • the gas supply chamber 130 may supply the pre-mixed gas to be burnt by the burner 110 to the burner 110 as described above.
  • the gas supply chamber 130 is seated on and coupled to an upper portion of the burner 110.
  • a chamber flange 131 that is shape-matched to the burner flange 111 when the gas supply chamber 130 is seated on and coupled to the upper portion of the burner 110 is disposed on the gas supply chamber 130. Since the burner flange 111 has a shape that matches to that of the chamber flange 131, the burner flange 111 surface-contacts the chamber flange 131.
  • each of the burner 111 and the gas supply chamber 130 is formed of a metal material. Since the burner flange 111 is shape-matched to the chamber flange 131, leakage of the pre-mixed gas supplied from the gas supply chamber 130 to the burner 110 may be prevented. However, since the leakage of the pre-mixed gas is not perfectly prevented by the shape-matched coupling of the burner flange 111 and the chamber flange 131, a component that is capable of preventing the gas from leaking is needed between the burner 110 and the gas supply chamber 130.
  • a sealing member is disposed between the burner 110 and the gas supply chamber 130.
  • the burner 110 may be slightly separated from the gas supply chamber 130 without being shape-matched due to the installation of the sealing member.
  • the sealing member 150 according to the present invention solves the limitation. Therefore, the burner flange 111 of the burner 110 may be completely shape-matched and coupled to the chamber flange 131 of the gas supply chamber 130 so that the burner flange 111 surface-contacts the chamber flange 131. More particularly, the sealing member 150 is disposed between the burner flange 111 and the chamber flange 131 when the burner flange 111 is shape-matched to the chamber flange 131. Thus, a groove 133 is defined in the chamber flange 131 so that the sealing member 150 is disposed therein.
  • the sealing member 150 includes a body 151, a protrusion 153 formed on the body 151.
  • the body 151 has a width that is less than a height of the groove 133 so that the body 151 is inserted to the groove 13.
  • the body 151 may have a column shape having a circular or rectangular section and various shapes.
  • a plurality of protrusions 153 protruding from the body 151 is formed on the body 151.
  • one portion of the protrusions 153 may be inclined toward an inner surface of the groove 133 defined in the chamber flange 131 of the gas supply chamber 130, and the other portion of the protrusions 153 may be inclined toward the burner flange 111 of the burner 110.
  • the protrusion 153 of the plurality of protrusions 153 which is formed toward the chamber flange 131, may be inclined upward from the body 151.
  • the protrusion 153 of the plurality of protrusions 153 which is formed toward the burner flange 111, may be inclined downward from the body 151. That is, the plurality of protrusions 153 are formed toward the insides of the gas supply chamber 130 and the burner 110.
  • the plurality of protrusions 153 are disposed and installed toward the insides of the burner 110 and the gas supply chamber 130.
  • the sealing member 150 may have a height that is greater than that of the groove 133 by the plurality of protrusions 153.
  • the plurality of protrusions 153 may flexibly move to allow the sealing member 150 to be installed between the burner 110 and the gas supply chamber 130. That is, when the sealing member 150 is installed to the groove 133, as illustrated in FIGS. 3 and 4 , the plurality of protrusions 153 of the sealing member 150 may be installed to the groove 133 while being lain toward the body 151 in an arrow direction.
  • the burner flange 111 of the burner 110 may be perfectly shape-matched and coupled to the chamber flange 131 of the gas supply chamber 130 even though the sealing member 150 is installed, and the burner flange 111 may surface-contact the chamber flange 131. Since the burner flange 111 surface-contacts the chamber flange 131, if a surface of the burner 110 is overheated because flames of the burner 110 have short lengths due to the combustion with a low heat generation amount, heat-exchanging may be performed between the burner flange 111 and the chamber flange 131 to prevent the burner 110 from being overheated.
  • the pre-mixed gas supplied from the gas supply chamber 130 to the burner 110 may leak between the burner 110 and the gas supply chamber 130.
  • the sealing member 150 when the sealing member 150 is disposed between the burner 110 and the gas supply chamber 130, the leakage of the pre-mixed gas may be prevented by the sealing member 150.
  • the plurality of protrusions 153 formed on the sealing member 150 are formed toward the inside the gas supply chamber 130 and the burner 110, the plurality of protrusions 153 may prevent the pre-mixed gas from leaking once again.
  • FIGS. 5 to 8 A gas boiler according to another embodiment of the present invention is illustrated in FIGS. 5 to 8 .
  • Like reference numerals in the foregoing embodiment denote like elements, and thus differences between the foregoing embodiment and the following embodiment will be mainly described.
  • the gas boiler may further include a heat dissipation fin 170.
  • the heat dissipation fin 170 is disposed between the burner 110 and the gas supply chamber 130. More particularly, the heat dissipation fin 170 has one end that is fixed to the burner flange 111 and the other end that extends toward the inside of the gas supply chamber 130. The other end of the heat dissipation fin 170 extending toward the inside the gas supply chamber 130 contacts the pre-mixed gas supplied from the gas supply chamber 130.
  • heat-exchanging between the other end of the heat dissipation fin 170 cooled by the pre-mixed gas and the one end of the heat dissipation fin 170 fixed to the burner flange 111 may be performed to cool the burner 110.
  • the heat dissipation fin 170 includes a first plate 171 fixed to the burner flange 111 to extend toward the inside of the burner 110 and a second plate 172 extending from a front end of the first plate 171, wherein the second plate 172 is inclinedly bent upward toward the gas supply chamber 130 when the heat dissipation fin 170 is installed between the burner 110 and the gas supply chamber 130.
  • the second plate contacting the pre-mixed gas may be bent several times while alternately forming a convex part 172a and a concave part 172b to increase a contact area with the pre-mixed gas.
  • each of the convex part 172a and the concave part 172b is sharply bent and has a shape such as a thread.
  • FIG. 8 is a view illustrating a modified example of a heat dissipation fin 170'.
  • the heat dissipation fin 170' includes first and second plates 171' and 172' like as the above-described heat dissipation fin 170
  • each of a convex part 172a' and a concave part 172b' formed in the second plate 172' has a shape different from that of FIG. 7 .
  • each of the convex part 172a and the concave part 172b of the heat dissipation fin 170 of FIG. 7 has a sharp shape such as a thread as described above
  • each of the convex part 172a' and the concave part 172b' of the heat dissipation fin 170' of FIG. 8 has a curved surface.
  • the second plates 172 and 172' are not limited to the shapes of FIGS. 7 and 8 and may have various shapes capable of increasing a contact area with the pre-mixed gas.
  • each of the heat dissipation fins 170 and 170' has to be easily cooled when each of the heat dissipation fins 170 and 170' contacts the pre-mixed gas and be heat-exchanged with the burner 110 to which each of the heat dissipation fins 170 and 170' are fixed, it is preferable that each of the heat dissipation fins 170 and 170' may be formed of a metal material having good heat transfer efficiency or a heat conductive plastic material.
  • each of the heat dissipation fins 170 and 170' when each of the heat dissipation fins 170 and 170' is disposed between the burner 110 and the gas supply chamber 130, as described above, each of the heat dissipation fins 170 and 170' may be cooled while contacting the pre-mixed gas supplied from the gas supply chamber 130 to cool the burner 110 through the heat-exchanging between each of the heat dissipation fins 170 and 170' and the burner 110.
  • the flames of the burner 110 may be shorten in length to overheat the surface of the burner 110.
  • the heat dissipation fin 170 may prevent the surface of the burner 110 from being overheated.
  • the sealing member 150 disposed between the burner 110 and the gas supply chamber 130 to prevent the pre-mixed gas from leaking may have a small choice of materials.
  • a sealing member formed of a material having improved heat-resistance has to be provided.
  • the sealing member has a small choice of materials and also is increased in material cost or production cost due to the use of a high-functional material. Therefore, when the heat dissipation fin 170 is disposed between the burner 110 and the gas supply chamber 130, the overheating of the surface of the burner 110 may be prevented through the heat-exchanging.
  • the sealing member 150 disposed between the burner 110 and the gas supply chamber 130 may have a wide choice in material and a cost saving effect.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Gas Burners (AREA)
  • Feeding And Controlling Fuel (AREA)

Claims (4)

  1. Gaskessel aufweisend:
    einen Brenner (110), an dem ein Brennerflansch (111) in Umfangsrichtung angeordnet ist, wobei der Brenner (110) ein vorgemischtes Gas verbrennt;
    eine Gasversorgungskammer (130), die an einem oberen Abschnitt des Brenners (110) sitzt und mit diesem gekoppelt ist, um das vorgemischte Gas dem Brenner (110) zuzuführen, wobei die Gasversorgungskammer (130) einen Kammerflansch (131) aufweist, der formmäßig an den Brennerflansch (111) angepasst ist, um den Brennerflansch zu berühren; und
    ein Dichtungselement (150), das zwischen dem Brenner (110) und der Gasversorgungskammer (130) angeordnet ist, um zu verhindern, dass das vorgemischte Gas, das von der Gasversorgungskammer (130) dem Brenner (110) zugeführt wird, zwischen der Gasversorgungskammer (130) und dem Brenner (110) leckt;
    dadurch gekennzeichnet, dass
    im Kammerflansch (131) der Gasversorgungskammer (130) eine Nut (133) definiert ist, in die das Dichtungselement (150) eingebaut wird;
    wobei das Dichtungselement (150) aufweist:
    einen Körper (151), der in die Nut (133) eingesetzt ist; und eine Vielzahl von Vorsprüngen (153), von denen ein Teil aus dem Körper (151) in Richtung der Gasversorgungskammer (130) und der andere Teil in Richtung des Brenners (110) vorsteht,
    wobei sich die Vielzahl von Vorsprüngen (153) von dem Körper (151) aus erstreckt,
    wobei der eine Teil der Vielzahl von Vorsprüngen (153) schräg nach oben zur Gasversorgungskammer (130) vorsteht, und der andere Teil der Vielzahl von Vorsprüngen (153) schräg nach unten zum Brenner (110) vorsteht, und
    wobei, wenn das Dichtungselement (150) in der Nut (133) angeordnet ist und der Brenner (110) mit der Gasversorgungskammer (130) gekoppelt ist, die Vielzahl von Vorsprüngen (153) in Richtung auf den Körper (110) gelegt und geschoben wird.
  2. Gaskessel nach Anspruch 1, ferner aufweisend eine zwischen der Gasversorgungskammer (130) und dem Brenner (110) angeordnete Wärmeableitungsrippe (170),
    wobei die Wärmeableitungsrippe (170) ein erstes Ende, das zwischen dem Brennerflansch (111) und dem Kammerflansch (131) befestigt ist, und ein anderes Ende hat, das sich in Richtung der Gasversorgungskammer (130) erstreckt und mit dem vorgemischten Gas wärmeausgetauscht wird, um den Brenner (110) zu kühlen.
  3. Gaskessel nach Anspruch 2, bei dem die Wärmeableitungsrippe (170) aufweist:
    eine erste Platte, die sich vom Brennerflansch (111) zur Innenseite des Brenners (110) erstreckt; und
    eine zweite Platte, die sich von einem vorderen Ende der ersten Platte aus erstreckt, wobei die zweite Platte nach oben zur Gasversorgungskammer (130) geneigt angeordnet ist.
  4. Gaskessel nach Anspruch 3, bei dem die Wärmeableitungsrippe (170) einen konvexen Teil und einen konkaven Teil aufweist, die abwechselnd mehrmals auf der zweiten Platte gebogen sind, so dass eine Kontaktfläche zwischen der Wärmeableitungsrippe (170) und dem vorgemischten Gas zunimmt.
EP13867891.7A 2012-12-27 2013-12-12 Gaskessel mit funktion zur verhinderung der überhitzung eines brennerflanschs und gassaustritt Active EP2940397B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20120154238A KR101434978B1 (ko) 2012-12-27 2012-12-27 버너 플랜지의 과열이 방지되는 가스 보일러
PCT/KR2013/011552 WO2014104625A1 (ko) 2012-12-27 2013-12-12 버너 플랜지의 과열이 방지되는 가스 보일러

Publications (3)

Publication Number Publication Date
EP2940397A1 EP2940397A1 (de) 2015-11-04
EP2940397A4 EP2940397A4 (de) 2017-07-26
EP2940397B1 true EP2940397B1 (de) 2020-08-05

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EP13867891.7A Active EP2940397B1 (de) 2012-12-27 2013-12-12 Gaskessel mit funktion zur verhinderung der überhitzung eines brennerflanschs und gassaustritt

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Country Link
EP (1) EP2940397B1 (de)
JP (1) JP6129984B2 (de)
KR (1) KR101434978B1 (de)
CN (1) CN105051464B (de)
ES (1) ES2822626T3 (de)
WO (1) WO2014104625A1 (de)

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WO2018124824A1 (ko) * 2016-12-30 2018-07-05 주식회사 경동나비엔 연관식 보일러
KR102136170B1 (ko) * 2016-12-30 2020-07-21 주식회사 경동나비엔 연관식 보일러
JP6834772B2 (ja) 2017-05-22 2021-02-24 株式会社ノーリツ 温水装置
JP7032120B2 (ja) * 2017-12-19 2022-03-08 リンナイ株式会社 燃焼装置
KR102364011B1 (ko) * 2017-12-29 2022-02-17 주식회사 경동나비엔 연관식 보일러
KR102428535B1 (ko) * 2017-12-29 2022-08-03 주식회사 경동나비엔 연관식 보일러
DE102021112468A1 (de) * 2021-05-12 2022-11-17 Vaillant Gmbh Brenner für ein Heizgerät und Verwendung eines Federelements für einen Brenner

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DE3414267A1 (de) * 1984-04-14 1985-11-07 Raschig Gmbh, 6700 Ludwigshafen Einbauelement fuer stoff- oder waermeaustauschkolonnen
JP2558216Y2 (ja) * 1991-08-19 1997-12-24 シャープ株式会社 液体燃料燃焼装置の気化器
KR100242970B1 (ko) 1997-06-09 2000-03-02 김철병 가스보일러용 예혼합버너
KR200252274Y1 (ko) * 1999-04-03 2001-11-16 권윤노 배관설비용 패킹
KR20020069530A (ko) 2001-02-26 2002-09-05 주식회사 경동보일러 가스 보일러용 버너
CN1313764C (zh) * 2002-11-28 2007-05-02 吴强 一种内热管凝结式燃气加热装置
JP2005233498A (ja) * 2004-02-19 2005-09-02 Rinnai Corp ガスコンロ
KR200363824Y1 (ko) 2004-06-30 2004-10-06 주식회사 롯데기공 보일러용 패킹
CN101929676B (zh) * 2010-08-05 2012-07-25 西安交通大学 一种催化多孔介质燃烧器

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Also Published As

Publication number Publication date
EP2940397A1 (de) 2015-11-04
KR20140084599A (ko) 2014-07-07
EP2940397A4 (de) 2017-07-26
WO2014104625A1 (ko) 2014-07-03
CN105051464A (zh) 2015-11-11
JP6129984B2 (ja) 2017-05-17
CN105051464B (zh) 2018-08-24
JP2016503484A (ja) 2016-02-04
KR101434978B1 (ko) 2014-08-27
ES2822626T3 (es) 2021-05-04

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