Heat exchanging unit, heat exchanging apparatus, and hot water supply system

A heat exchanging unit for exchanging heat between a fluid to be heated and exhaust gas, the heat exchanging unit comprising:

• a heat exchange portion including a plurality of heat exchange pipes allowing the fluid to be heated to flow in the plurality of heat exchange pipes;
• a header portion connected to the plurality of heat exchange pipes, the header portion allowing the fluid to be heated to flow from the header portion to the plurality of heat exchange pipes or from the plurality of heat exchange pipes to the header portion;
• first and second wind direction plates that change the state of flow of the exhaust gas introduced into the heat exchange portion;
• and
• a ventilation plate having a plurality of vents through which the exhaust gas passes, wherein
• the heat exchange portion includes an opening and a discharge portion, the opening introduces the exhaust gas into the heat exchange portion, and the discharge portion discharges the exhaust gas after heat exchange from the heat exchange portion, wherein
• the first wind direction plate includes a first cut-off plate and a first regulation plate linked with the first cut-off plate, the first cut-off plate is disposed on a side of the opening of the heat exchange portion to regulate an opening amount of the opening, and the first regulation plate is disposed from the side of the opening toward an interior of the heat exchange portion, wherein
• the second wind direction plate includes a second cut-off plate and a second regulation plate linked with the second cut-off plate, the second cut-off plate is disposed on a side of the discharge portion of the heat exchange portion to regulate an opening amount of the discharge portion, and the second regulation plate is disposed from the side of the discharge portion toward the interior of the heat exchange portion, wherein
• the plurality of heat exchange pipes include a first heat exchange pipe on a side of the opening of the heat exchange portion, a second heat exchange pipe on a side of the first cut-off plate, a third heat exchange pipe on a side of the discharge portion of the heat exchange portion, and a fourth heat exchange pipe on a side of the second cut-off plate, wherein
• the first regulation plate is partially disposed between the first heat exchange pipe and the second heat exchange pipe, wherein
• the second regulation plate is partially disposed between the third heat exchange pipe and the fourth heat exchange pipe, and wherein
• the first and second wind direction plates form a meandering exhaust flow path for the exhaust gas in the heat exchange portion, wherein
• the ventilation plate changes the flow velocity of the exhaust gas passing through the vents to turn the flow of the exhaust gas into a turbulent flow.

A heat exchanging apparatus comprising:

• a housing allowing exhaust gas to flow in the housing;
• and
• a heat exchanging unit disposed in the housing, the heat exchanging unit including a heat exchange portion, a header portion, first and second wind direction plates, and third and fourth regulation plates, wherein
• the heat exchange portion includes a plurality of heat exchange pipes allowing a fluid to be heated to flow in the plurality of heat exchange pipes to exchange heat between the fluid to be heated and the exhaust gas, wherein
• the header portion is connected to the plurality of heat exchange pipes to allow the fluid to be heated to flow from the header portion to the plurality of heat exchange pipes or from the plurality of heat exchange pipes to the header portion, wherein
• the first and second wind direction plates change the state of flow of the exhaust gas introduced into the heat exchange portion, wherein
• the third and fourth regulation plates are placed in the heat exchange portion, and are adjacent to the second wind direction plate, wherein
• the heat exchange portion includes an opening and a discharge portion, the opening introduces the exhaust gas into the heat exchange portion, and the discharge portion discharges the exhaust gas after heat exchange from the heat exchange portion, wherein
• the first wind direction plate includes a first cut-off plate and a first regulation plate linked with the first cut-off plate, the first cut-off plate is disposed on a side of the opening of the heat exchange portion to regulate an opening amount of the opening, and the first regulation plate is disposed from the side of the opening toward an interior of the heat exchange portion, wherein
• the second wind direction plate includes a second cut-off plate and a second regulation plate linked with the second cut-off plate, the second cut-off plate is disposed on a side of the discharge portion of the heat exchange portion to regulate an opening amount of the discharge portion, and the second regulation plate is disposed from the side of the discharge portion toward the interior of the heat exchange portion, wherein
• the third and fourth regulation plates restrict an opening area of the discharge portion of the heat exchange portion, such that the exhaust gas is collected toward the discharge portion, wherein
• the plurality of heat exchange pipes include a first heat exchange pipe on a side of the opening of the heat exchange portion, a second heat exchange pipe on a side of the first cut-off plate, a third heat exchange pipe on a side of the discharge portion of the heat exchange portion, and a fourth heat exchange pipe on a side of the second cut-off plate, wherein
• the first regulation plate is partially disposed between the first heat exchange pipe and the second heat exchange pipe, wherein
• the second regulation plate is partially disposed between the third heat exchange pipe and the fourth heat exchange pipe, and wherein
• the first and second wind direction plates form a meandering exhaust flow path for the exhaust gas in the heat exchange portion.

A hot water supply system comprising:

• a burner that burns fuel gas to generate exhaust gas;
• a housing allowing the exhaust gas to flow;
• and
• a heat exchanging unit disposed in the housing, the heat exchanging unit including a heat exchange portion, a header portion, first and second wind direction plates, and third and fourth regulation plates, wherein
• the heat exchange portion includes a plurality of heat exchange pipes allowing a fluid to be heated to flow in the plurality of heat exchange pipes to exchange heat between the fluid to be heated and the exhaust gas, wherein
• the header portion is connected to the plurality of heat exchange pipes to allow the fluid to be heated to flow from the header portion to the plurality of heat exchange pipes or from the plurality of heat exchange pipes to the header portion, wherein
• the first and second wind direction plates change the state of flow of the exhaust gas introduced into the heat exchange portion, wherein
• the third and fourth regulation plates are placed in the heat exchange portion, and are adjacent to the second wind direction plate, wherein
• the heat exchange portion includes an opening and a discharge portion, the opening introduces the exhaust gas into the heat exchange portion, and the discharge portion discharges the exhaust gas after heat exchange from the heat exchange portion, wherein
• the first wind direction plate includes a first cut-off plate and a first regulation plate linked with the first cut-off plate, the first cut-off plate is disposed on a side of the opening of the heat exchange portion to regulate an opening amount of the opening, and the first regulation plate is disposed from the side of the opening toward an interior of the heat exchange portion, wherein
• the second wind direction plate includes a second cut-off plate and a second regulation plate linked with the second cut-off plate, the second cut-off plate is disposed on a side of the discharge portion of the heat exchange portion to regulate an opening amount of the discharge portion, and the second regulation plate is disposed from the side of the discharge portion toward the interior of the heat exchange portion, wherein
• the third and fourth regulation plates restrict an opening area of the discharge portion of the heat exchange portion, such that the exhaust gas is collected toward the discharge portion, wherein
• the plurality of heat exchange pipes include a first heat exchange pipe on a side of the opening of the heat exchange portion, a second heat exchange pipe on a side of the first cut-off plate, a third heat exchange pipe on a side of the discharge portion of the heat exchange portion, and a fourth heat exchange pipe on a side of the second cut-off plate, wherein
• the first regulation plate is partially disposed between the first heat exchange pipe and the second heat exchange pipe, wherein
• the second regulation plate is partially disposed between the third heat exchange pipe and the fourth heat exchange pipe, and wherein
• the first and second wind direction plates form a meandering exhaust flow path for the exhaust gas in the heat exchange portion.