152results about How to "Guaranteed thermal efficiency" patented technology

The invention discloses a burner cap of a household gas stove. The burner cap of the household gas stove comprises a burner cap body and an upper cover arranged at the top of the burner cap body. The burner cap is characterized in that the burner cap body is provided with an inner ring wall and an outer ring wall, a center through hole is formed in the center of the inner ring wall, an annular channel is formed between the inner ring wall and the outer ring wall, a through hole is formed in the bottom of the annular channel, and the upper cover is of a sheet structure densely provided with meshes. The invention further discloses a combustor provided with the burner cap of the household gas stove, the burner cap is arranged on a gas mixing chamber, the center through hole is communicated with an inner ring gas mixing cavity, and the through hole in the bottom of the annular channel is communicated with a middle ring gas mixing cavity. The burner cap of the household gas stove has the advantages that by the adoption of the burner cap, a middle ring needs little secondary air, an inner ring achieves fully premixed atmospheric combustion, the temperature of burning flame reaches about 1000 DEG C, the flame is directly injected, combustion is centralized, the secondary air takes little heat away, and therefore the heat efficiency is good; on the premise of ensuring the heat efficiency, little secondary air is needed, and the diameter of the combustor can be small relatively.

The invention discloses a pretightening force PTC electric heater. The electric heater comprises a PTC component, electrodes are applied to the external of the PTC and then led out via power lines, and the PTC component and electrodes are wrapped in an insulating film and then compressed and mounted into an electric heater body formed in a square tube. The electric heater further comprises a frame, the electric heater body is placed in the frame, the frame is internally provided with a pressure plate which is placed between the frame and the electric heater body, the bottom of the pressure plate is provided with an elastic layer, and the elastic layer of the pressure plate compresses the electric heater body so that the square tube can generate elastic deformation to compress and fix the PTC component and the electrodes. According to the structure, the PTC component and the electrodes are always compressed and fixed in the using process via the elastic force of the pressure plate, when expansion with heat, contraction with cold or other problem occur, the square tube can generate elastic deformation to compress and fix the PTC component and electrodes, and the heat efficiency is ensured.

The invention relates to a gas stove as well as a burner cap and a furnace end of a burner for the gas stove and the burner. The burner cap (3) comprises an inner ring cover part (10), an outer ring cover part (20) and a middle ring cover part (30), wherein a first concave part (11) which is concave inwards is arranged at the bottom of the inner ring cover part (10), and a first air outlet (101) which communicates with the first concave part (11) is formed in the inner ring cover part (10); the bottom of the outer ring cover part (20) is concave inwards so as to form an outer ring concave part(21); and when the burner cap (3) is operated, the first concave part (11) is separated from the outer ring concave part (21), a second air outlet (102) is further formed in the inner ring cover part(10), a third air outlet (301) is formed in the middle ring cover part (30), and the second air outlet (102) and the third air outlet (301) respectively communicate with the outer ring concave part (21). According to the gas stove as well as the burner cap and the furnace end of the burner for the gas stove and the burner, the small fire power is low enough, and CO is reduced.