Reverse flow prevention apparatus for common exhaust flue and combustion apparatus having same

Abstract

The present invention relates to a reverse flow prevention apparatus for common exhaust flue and a combustion apparatus having same. The reverse flow prevention apparatus for common exhaust flue, which is configured to collect exhaust gas of a plurality of combustion apparatuses, discharge the collected exhaust gas through a common exhaust flue, and prevent a reverse flow of the exhaust gas from the common exhaust pipe to each of the combustion apparatuses, includes a flange coupled to an exhaust port of each of the combustion apparatuses, an opening and closing apparatus hinge-coupled to an upper part of the flange to be opened and closed by a pressure difference between a lower portion and an upper portion thereof, and a body coupled to the upper part of the flange so as to accommodate the opening and closing apparatus. In accordance with the present invention, the reverse flow prevention apparatus, which may be directly installed at the exhaust port of the combustion apparatus, is coupled to the common exhaust flue upon installation thereof so that a separate certification may not be required to reduce time and costs for a certification.

Claims

1. A reverse flow prevention apparatus for common exhaust flue, which is configured to collect exhaust gas of a plurality of combustion apparatuses, discharge the collected exhaust gas through a single common exhaust flue, and prevent a reverse flow of the exhaust gas from the single common exhaust flue to each of the combustion apparatuses, comprising: a flange coupled to an exhaust port of each of the combustion apparatuses; an opening and closing apparatus hinge-coupled to an upper part of the flange to be opened and closed by a pressure difference between a lower portion and an upper portion thereof; and a body coupled to the upper part of the flange so as to accommodate the opening and closing apparatus, wherein the reverse flow prevention apparatus is integrally coupled with an exhaust connection port of the combustion apparatuses, wherein the body of the reverse flow prevention apparatus is detachably coupled to a common exhaust connection pipe connected to the common exhaust flue, wherein the flange includes: a connection pipe coupled to the exhaust port of each of the combustion apparatuses; an inclined protrusion configured to form a circumference of an exhaust hole through which the exhaust gas of each of the combustion apparatuses passes, and protruding more than a surrounding area of the exhaust hole, wherein the inclined protrusion is inclined toward a first side; a water collector provided at the surrounding area of the inclined protrusion on a second side that is opposite to the first side; a discharge pipe connected to a part of the water collector to discharge condensate water collected at the water collector to an outside; and a hinge coupler configured to fix the opening and closing apparatus, and wherein the surrounding area of the exhaust hole includes an inclined surface that is inclined toward the second side to enable the condensate water to flow into the water collector.

2. The reverse flow prevention apparatus for common exhaust flue of claim 1, wherein a sealing portion made of an elastic material is coupled to an upper part of the inclined protrusion.

3. The reverse flow prevention apparatus for common exhaust flue of claim 1, wherein the water collector is configured to include an inclined bottom surface so as to facilitate a discharge of the collected condensate water through the discharge pipe.

4. The reverse flow prevention apparatus for common exhaust flue of claim 1, wherein the opening and closing apparatus includes: a hinge hinge-coupled to the hinge coupler; and an opening and closing member configured to have one side at which the hinge is provided, and to be vertically rotated about the hinge to open or close the inclined protrusion.

5. The reverse flow prevention apparatus for common exhaust flue of claim 4, wherein the body includes a stopper configured to determine a maximum rotational position of the opening and closing member when the opening and closing member is upwardly rotated.

6. The reverse flow prevention apparatus for common exhaust flue of claim 1, wherein the body includes: a slit coupling portion having a plurality of slits vertically provided at an upper part of the slit coupling portion; and a clamp configured to enable the common exhaust connection pipe to be tightly inserted and hold an outer circumference of the slit coupling portion to prevent the common exhaust connection pipe from being escaped.

7. A combustion apparatus comprising the reverse flow prevention apparatus for common exhaust flue according to claim 1.

Description

BRIEF DESCRIPTION OF DRAWINGS

(1) FIG. 1 is a configuration diagram of a cascade system using a typical reverse flow prevention apparatus for common exhaust flue.

(2) FIGS. 2 and 3 are cross-sectional configuration diagrams of the typical reverse flow prevention apparatus for common exhaust flue.

(3) FIG. 4 is a configuration diagram of a cascade system using a reverse flow prevention apparatus for common exhaust flue according to the present invention.

(4) FIG. 5 is a cross-sectional configuration diagram illustrating a coupled state between the reverse flow prevention apparatus for common exhaust flue according to a preferred embodiment of the present invention and an exhaust connection port of a combustion apparatus.

(5) FIG. 6 is a perspective view illustrating the coupled state of the reverse flow prevention apparatus for common exhaust flue according to the preferred embodiment of the present invention.

(6) FIG. 7 is an exploded perspective view of the reverse flow prevention apparatus for common exhaust flue according to the preferred embodiment of the present invention.

(7) FIG. 8 is a cross-sectional view taken along line A-A of FIG. 6.

(8) FIG. 9 is a magnified cross-sectional view of a major part of FIG. 8.

DESCRIPTION OF REFERENCE NUMERALS

(9) 100: Reverse flow Prevention Apparatus for Common Exhaust Flue 110: Flange 111: Water Collector 112: Connection Pipe 113: Exhaust Hole 114: Airtight Member 115: Sealing Portion 116: Discharge Pipe 117: Inclined Protrusion 118: Hinge Coupler 120: Opening and Closing Apparatus 121: Opening and Closing Member 122: Hinge 130: Body 131: Stopper 132: Spacing Portion 133: Slit Coupling Portion 134: Clamp 140: Common Exhaust Connection Flue 200: Combustion Apparatus 210: Exhaust Connection Port 300: Common Exhaust Flue

DETAILED DESCRIPTION

(10) Hereinafter, with reference to the accompanying drawings, a reverse flow prevention apparatus for common exhaust flue and a combustion apparatus having same in accordance with the present invention will be described in detail.

(11) FIG. 4 is a configuration diagram of a cascade system using a reverse flow prevention apparatus for common exhaust flue according to the present invention, and FIG. 5 is a cross-sectional configuration diagram illustrating a coupled state between the reverse flow prevention apparatus for common exhaust flue according to a preferred embodiment of the present invention and an exhaust connection port of a combustion apparatus.

(12) With reference to FIGS. 4 and 5 respectively, a reverse flow prevention apparatus 100 for common exhaust flue according to a preferred embodiment of the present invention is supplied by being coupled to an exhaust connection port 210 of a combustion apparatus 200.

(13) A common exhaust flue 300 and the reverse flow prevention apparatus 100 for a common exhaust flue are coupled to each other through a common exhaust connection pipe 140.

(14) In a typical reverse flow prevention apparatus integrally configured with the common exhaust flue 300, it should be certified in terms of a material, thermal resistance, durability, and the like together with the common exhaust flue 300. On the other hand, if the reverse flow prevention apparatus 100 for a common exhaust flue is supplied in a state of being coupled to the exhaust connection port 210 of the combustion apparatus 200, a manufacturer of the combustion apparatus 200 should take responsibility for the reverse flow prevention apparatus 100 so that a separate certification is not needed.

(15) Consequently, there is no need to perform an inconvenient procedure for obtaining a certification, so that time and costs for the certification may be reduced.

(16) Also, since the reverse flow prevention apparatus 100 for a common exhaust flue is directly coupled to the combustion apparatus 200, when a user is allowed to directly purchase and install the common exhaust flue 300 as in North America, the user may replace it with an inexpensive common exhaust flue 300 of a PVC material so that a user convenience may be improved.

(17) FIG. 6 is a perspective view illustrating the coupled state of the reverse flow prevention apparatus 100 for common exhaust flue according to the preferred embodiment of the present invention, FIG. 7 is an exploded perspective view of FIG. 6, FIG. 8 is a cross-sectional view taken along line A-A in FIG. 6, and FIG. 9 is a magnified cross-sectional view of a major part of FIG. 8.

(18) With reference to FIGS. 6 to 9 respectively, a lower portion of the reverse flow prevention apparatus 100 for common exhaust flue according to a preferred embodiment of the present invention is coupled to the exhaust connection port 210 of the combustion apparatus 200. The reverse flow prevention apparatus 100 for common exhaust flue is provided to include a flange 110 configured to have a water collector 111 in the vicinity of an upper part of an exhaust hole 113, an opening and closing apparatus 120 placed at an upper side of the flange 110 to open and close the exhaust hole 113 according to a pressure, a body 130 coupled to an upper part of the flange 110 by interposing an airtight member 114 therebetween, and the common exhaust connection pipe 140 connected to the body 130 by a clamp 134 and having an upper end connected to the common exhaust flue 300.

(19) Hereinafter, a configuration and an operation of the reverse flow prevention apparatus 100 for common exhaust flue having such a configuration according to the preferred embodiment of the present invention will be described in detail.

(20) Firstly, the flange 110 includes a connection pipe 112 protruding in a downward direction at a lower part of the flange 110, and the exhaust hole 113 of a circular shape is vertically provided. A inclined protrusion 117 stepped higher than other part of the exhaust hole 113 and having an inclined end surface of a cylindrical shape is formed along a circumference of the exhaust hole 113. A hinge coupler 118 to which a hinge 122 of the opening and closing apparatus 120 is coupled is located at a higher inclined end surface of the protrusion 117. A distinguishing action of such a configuration will be described in detail below.

(21) The water collector 111 being stepped lower is formed at an outward surrounding area of the inclined protrusion 117, and a discharge pipe 116 is formed downward at a part of the water collector 111. A bottom surface of the water collector 111 is inclined to facilitate a draining toward the discharge pipe 116.

(22) A sealing portion 115 of an elastic material is fixedly installed at an upper center portion of the inclined protrusion 117.

(23) The hinge 122 of the opening and closing apparatus 120 may be coupled to the hinge coupler 118, and an opening and closing member 121 of a circular plate shape integrally provided with the hinge 122 at one side thereof may rotate centering on the hinge 122.

(24) While the opening and closing member 121 is closed, a lower edge thereof comes in contact with the sealing portion 115 protruding from an upper side of the inclined protrusion 117 such that it may be possible to prevent exhaust gas flowing reversely from the common exhaust flue 300 from flowing into the combustion apparatus 200. Particularly, a sealing ability between the sealing portion 115 of an elastic material and the opening and closing member 121 of a resin is more increased than that between plastics such that a reverse flow of the exhaust gas may be completely prevented.

(25) Also, the opening and closing member 121 of the opening and closing apparatus 120 is inclined along the inclined end surface of the inclined protrusion 117 in a state that the opening and closing member 121 has been closed. Thus, when being on the opening and closing member 121, the condensate water flows along the inclined direction to the water collector 111 to be discharged to an outside through the discharge pipe 116. With such a configuration, it may be possible to prevent a phenomenon in which the opening and closing member 121 is not smoothly opened and closed due to an increase of weight and a remaining of foreign materials caused by the condensate water located at the opening and closing member 121.

(26) Unlike a typical method of a vertical movement, the opening and closing member 121 is opened and closed by being rotated centering on the hinge 122, and an exhaust is performed by a rotation of the opening and closing member 121 in an upward direction due to an increase of an exhaust pressure of the combustion apparatus 200 when the combustion apparatus 200 coupled to a lower part of the opening and closing member 121 operates. At this point, since an area occupied by the opening and closing member 121 in an exhaust space is relatively small, a sufficiently wider exhaust space may be secured even though a pipe diameter of the body 130 is equal to that of the flange 110.

(27) Therefore, a volume of the apparatus according to the present invention when the apparatus has been installed is less than that of the typical apparatus so that an installation may be easily implemented due to a decrease of interference with peripheral components. Also, a sufficient exhaust space may be provided to increase exhaust efficiency.

(28) The body 130 is coupled to the upper part of the flange 110 to which the opening and closing apparatus 120 is rotatably coupled at the upper part thereof, by interposing the airtight member 114 between the body 130 and the flange 110.

(29) The body 130 provides a spacing portion 132 in which the opening and closing member 121 is sufficiently rotated, and a stopper 131 capable of limiting a maximum opening state of the opening and closing member 121 is provided inside the body 130. The stopper 131 may have a structure horizontally protruding from a part of an inside wall of the body 130. When the opening and closing member 121 is upwardly rotated to be opened by a pressure, an end portion of the stopper 131 comes in contact with an upper surface of the opening and closing member 121 to limit a more upward rotation thereof.

(30) Since both ends of the opening and closing member 121 may be tightly attached to an inner diameter of the body 130 to become a state not to be restored to a closing state due to the circular shape of the opening and closing member 121, when the opening and closing member 121 is pushed up close to verticality, an excessively upward rotation of the opening and closing member 121 may be prevented using the stopper 131.

(31) A slit coupling portion 133 including silts, which are vertically formed at a part of the upper side of the body 130 to facilitate a coupling with the common exhaust connection pipe 140, is formed at the body 130. The common exhaust connection pipe 140 is tightly fixed by tightening the slit coupling portion 133 by the clamp 134 while being inserted into the slit coupling portion 133.

(32) An upper end of the common exhaust connection pipe 140 is connected to the common exhaust flue 300 described above.

(33) With such a configuration, when condensate water resulting from a condensation of vapor contained in exhaust gas discharged through the common exhaust flue 300 flows into the common exhaust connection pipe 140, the condensate water flows along wall surfaces of an inward side of the common exhaust connection pipe 140 and the body 130 into the water collector 111 provided at the flange 110. A part of the water collector 111 to which the discharge pipe 116 is connected is formed at a lowest position and thus the condensate water flows into the discharge pipe 116 to be discharged.

(34) Therefore, the present invention may prevent the condensate water from flowing into the combustion apparatus 200 regardless of an opening state or a closing state of the opening and closing member 121.

(35) As described above, although the present invention has been described in detail with reference to the preferred embodiment thereof, it is not limited thereto, and it should be understood that numerous other modifications can be implemented within the full range of the appended claims, the disclosure, and the accompanying drawings, and also such modifications will fall within the scope of the present invention.