2results about How to "Price advantage" patented technology

The combustion chamber of the air cooling structure comprises a combustor and a combustion chamber frame, the upper portion and the lower portion of the combustion chamber frame are open, the periphery of the combustion chamber frame is provided with side walls, the combustor is arranged at the bottom of the combustion chamber frame, and the opposite side walls of the combustion chamber frame are each composed of three layers of structural plates. The other opposite side wall of the combustion chamber frame is composed of two layers of structural plates, a gap between every two adjacent structural plates forms an air channel, each layer of structural plate is provided with a ventilation opening, and the ventilation openings in every two adjacent structural plates are arranged in a staggered mode. A coil pipe of the heat exchanger is omitted, a combustion chamber on the lower portion of the heat exchanger is changed into the combustion chamber of an air cooling structure, the phenomena of coil pipe corrosion and combustion chamber wall corrosion can be effectively avoided, the risks of water leakage, flue gas deterioration, flame overflow and the like are reduced, and the problem that the surface temperature of the combustion chamber is too high due to the fact that the coil pipe is omitted can be solved.

The utility model provides a sofa bed. The sofa bed includes lower frame and upper frame, the upper frame passes through electric moving mechanism and is installed on the lower frame, the side top of lower frame is fixedly installed with outer frame, the inboard of outer frame is fixedly installed with steel pipe, is provided with the sliding support mechanism for supporting the upper frame on the steel pipe. The utility model provides a sofa bed solves the existing electric sofa bed both sides for supporting the track of upper frame because of using the steel main rail in addition steel ball design, after the operation aging or the adhesion of foreign matters, easy to appear the situation such as jam, abnormal sound, drop ball, and then influence the service life technical problem.