A turn down ratio (TDR) damper which controls an amount of gas and air flowing in the TDR damper and deliver the controlled gas and air to a turbo fan is disclosed. The TDR damper includes: air passages comprising a first air passage and a second air passage, the first air passage and the second air
A turn down ratio (TDR) damper which controls an amount of gas and air flowing in the TDR damper and deliver the controlled gas and air to a turbo fan is disclosed. The TDR damper includes: air passages comprising a first air passage and a second air passage, the first air passage and the second air passage separately formed so that the air move through each path; gas passages comprising a first gas passage and a second gas passage, the first gas passage and the second gas passage separately formed so that the gas move through each path; and opening and closing means for opening and closing the second air passage and the second gas passage at the same time. The air passages and the gas passages may be separately formed and reached outlets connected to the turbo fan so that the air and gas may be delivered to the turbo fan through a separate path.
대표청구항▼
1. A turn down ratio (TDR) damper which controls an amount of gas and air flowing in the TDR damper and delivers the controlled gas and air to a turbo fan, the TDR damper comprising: air passages comprising a first air passage and a second air passage, the first air passage and the second air passag
1. A turn down ratio (TDR) damper which controls an amount of gas and air flowing in the TDR damper and delivers the controlled gas and air to a turbo fan, the TDR damper comprising: air passages comprising a first air passage and a second air passage, the first air passage and the second air passage separately formed so that the air moves through each path;gas passages comprising a first gas passage and a second gas passage, the first gas passage and the second gas passage separately formed so that the gas moves through each path; andopening and closing means for opening and closing the second air passage and the second gas passage at the same time,wherein the air passages and the gas passages are separately formed and reached outlets connected to the turbo fan so that the air and gas are allowed to be delivered to the turbo fan through a separate path,wherein when air flows in from the rear of the TDR damper and gas flows in from the lower part of the TDR damper so as to discharge the air and gas through the outlets disposed on the front of the TDR damper, the first air passage and the second air passage comprise straight-lined pipes and the first gas passage and the second gas passage comprise curved pipes, the first air passages and the gas passages connected to the outlets in the same direction,wherein the second gas passage comprises a via hole formed on one side of the curved part and the opening and closing means comprises: a gas opening and closing part, which opens and closes the second gas passage; and an air opening and closing part, which opens and closes the second air passage,wherein the opening and closing means closes the second gas passage and the second air passage by the opening and closing moving in a direction of the outlets so that the gas opening and closing part is inserted into the via hole so as to close the second gas passage and simultaneously, the air opening and closing part close the entry of the second air passage, and when the opening and closing means are to open the second gas passage and the second air passage, the opening and closing means move in an opposite direction of the outlets so that the gas opening and closing part opens the second gas passage and simultaneously, air opening and closing part opens the entry of the second air passage. 2. The TDR damper of claim 1, wherein the air passages and the gas passages are formed in such a way that air or gas discharged from each outlet to the turbo fan are discharged in a same direction. 3. The TDR damper of claim 1, wherein the first air passage and the second air passage are separately formed and reached the outlets connected to the turbo fan so that the air is delivered to the turbo fan through separate paths. 4. The TDR damper of claim 1, wherein the first gas passage and the second gas passage are separately formed and reached the outlets connected to the turbo fan so that the gas is delivered to the turbo fan through separate paths. 5. A turn down ratio (TDR) damper which controls an amount of gas and air flowing in the TDR damper and delivers the controlled gas and air to a turbo fan, the TDR damper comprising: a first air passage and a second air passage which are separately formed so that the air moves through each path;a first gas passage and a second gas passage which are separately formed so that the gas moves through each path;a mixer in which the air delivered through the first air passage and the second air passage is mixed with the gas delivered through the first gas passage and the second gas passage so as to deliver the mixed air and gas to the turbo fan; andopening and closing means for opening and closing the second air passage and the second gas passage at the same time,wherein the first air passage, the second air passage, the first gas passage, and the second gas passage are formed so that air or gas discharged from each outlet to the mixer may be discharged in the same direction,wherein when air flows in from the rear of the TDR damper and gas flows in from the lower part of the TDR damper so as to mix the air and the gas in the mixer and to discharge the mixed air and gas, the first air passage and the second air passage are straight-lined pipes, the first gas passage and the second gas passage are curved pipes, and the first and second air passages and the first and second gas passages are connected to the mixer in the same direction,wherein the second gas passage comprises a via hole formed on one side of the curved part and the opening and closing means comprises: a gas opening and closing part, which opens and closes the second gas passage; and an air opening and closing part, which opens and closes the second air passage,wherein the opening and closing means closes the second gas passage and the second air passage by the opening and closing moving in a direction of the outlets so that the gas opening and closing part is inserted into the via hole so as to close the second gas passage and simultaneously, the air opening and closing part close the entry of the second air passage, and when the opening and closing means are to open the second gas passage and the second air passage, the opening and closing means move in an opposite direction of the outlets so that the gas opening and closing part opens the second gas passage and simultaneously, air opening and closing part opens the entry of the second air passage. 6. The TDR damper of claim 5, wherein the first air passage and the second air passage are separated from each other until reaching the outlets connected to the mixer so that the air moves to the mixer through each path and the first gas passage and the second gas passage are separated from each other until reaching the outlets connected to the mixer so that the gas moves to the mixer through each path.
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