Dryer for lacquering facility

Patent metadata

Field	Value
Publication number	US-9909806-B2
Application number	US-92065109-A
Country	US
Kind code	B2
Filing date	Mar 3, 2009
Priority date	Mar 5, 2008
Publication date	Mar 6, 2018
Grant date	Mar 6, 2018

Abstract

The invention relates to a dryer for a lacquering facility: a) having a dryer housing, in which heated air is circulated, b) having an exhaust air line for a exhausting exhaust air from the dryer housing; c) having a combustion unit, which is connected to the exhaust air line, and which is used for thermal post-treatment of the exhaust air from the dryer housing and for providing hot air to a heat exchanger; d) wherein said heat exchanger is set up to supply said dryer housing with heated fresh air; and wherein e) at least one heating unit for heating the air circulated in said dryer housing is associated with said dryer housing. It is provided according to the invention that a combustion air supply of the heating unit is connected so it communicates with the dryer housing.

First claim

The invention claimed is:

1. A dryer for a painting facility
a) having a dryer housing, in which heated air is circulated;
b) having an exhaust air line for removing exhaust air from the dryer housing;
c) having a thermal combustion device, which is connected to the exhaust air line and which serves for thermal post-treatment of the exhaust air from the dryer housing and for providing heating air to a heat exchanger;
d) the heat exchanger being set up to supply the dryer housing with heated fresh air; and
e) at least one heater for heating the air circulated in the dryer housing being associated with the dryer housing, wherein
f) a combustion air supply of the at least one heater is connected in a communicating manner to the dryer housing and is configured to intervene in a supporting manner with regard to a preheating and partial thermal treatment of the exhaust air from the dryer housing such that the thermal combustion device is capable of being deliberately under-dimensioned in capacity to a part-load of the capacity of the dryer, only.

2. The dryer of claim 1 , wherein the at least one heater has an exhaust gas line for removing exhaust gases, which leads into the exhaust air line.

3. The dryer of claim 1 , wherein at least one adjustable throttle device is arranged in the exhaust gas line of the at least one heater and/or in the exhaust air line upstream of the point where the exhaust gas line leads into the exhaust air line.

4. The dryer of claim 1 , wherein an air supply line of the at least one heater has at least one branch for providing to the at least one heater a first exhaust air partial flow serving as a combustion air flow and a second exhaust air partial flow serving as a useful air flow.

5. The dryer of claim 1 , wherein the at least one heater has a useful air inlet and a useful air outlet, which are connected in a communicating manner to the dryer housing.

6. The dryer of claim 1 , wherein a plurality of heaters are arranged along the dryer housing.

7. The dryer of claim 6 , wherein an air inlet and an air outlet are connected in a communicating manner in each case to air shafts arranged laterally on the dryer housing and provided with air-permeable wall sections.

8. The dryer of claim 1 , wherein a hot air outlet of the heat exchanger is connected to an end region of the dryer housing.

9. The dryer of claim 1 , wherein at least one heater is arranged above the dryer housing.

10. The dryer of claim 1 , wherein a transverse extent of the at least one heater corresponds to a part of a transverse extent of the dryer housing.

11. The dryer of claim 1 , wherein the thermal combustion device is designed for part-load operation of the dryer.

12. The dryer of claim 11 , characterised in that the thermal combustion device is designed to produce 75 percent of the heating power required for maximum operation, based on maximum utilisation of the dryer.

13. The dryer of claim 1 , wherein a hot air outlet of the heat exchanger is connected to a lock region of the dryer housing.

14. A dryer for a painting facility
a) having a dryer housing, in which heated air is circulated;
b) having an exhaust air line for removing exhaust air from the dryer housing;
c) having a thermal combustion device, which is connected to the exhaust air line and which serves for thermal post-treatment of the exhaust air from the dryer housing and for providing heating air to a heat exchanger;
d) the heat exchanger being set up to supply the dryer housing with heated fresh air; and
e) at least one heater for heating the air circulated in the dryer housing being associated with the dryer housing, wherein
f) a combustion air supply of the at least one heater is connected in a communicating manner to the dryer housing and the thermal combustion device is designed for part-load operation of the dryer.

Assignees

• Schwerer Peter
• Obstfelder Peter
• Eisenmann Se

Inventors

• Schwerer Peter
• Obstfelder Peter

Classifications

• F26B2210/12

  Vehicle bodies, e.g. after being painted · CPC title

• F26B23/022 Primary

  incinerating volatiles in the dryer exhaust gases, the produced hot gases being wholly, partly or not recycled into the drying enclosure · CPC title