A pipeline construction usable for internally insulating a welded joint between pipes with an internal protective coating. A device for internally insulating a welded pipeline joint includes a sealing assembly including a cylindrical housing and a coaxially-fastened cylindrical working member that radially expands upon generation of excess pressure in a cavity thereof. Inside the housing are a sealing compound feed assembly, a dosing device formed by a piston assembly for sealing compound components, and a pneumatic control assembly. In the dosing device, working cavities for each component are connected to the feed assembly. The elastic working member has a conduit connected to the feed assembly for feeding sealing compound into an annular gap in a welded joint region, and a conduit for pumping air out of the gap. The pneumatic control assembly controls dosing device and feed assembly functioning and generates excess air pressure in the working member cavity.

An optical face protection shield is provided having a support body, an optic lens, and an elongate heater. The support body has a user interface. The optic lens is carried by the support body over a user's face configured to protect a user. The elongate heater is carried by the optic lens so as to traverse an expansive surface area of the optic lens. The elongate heater has an elongate resistive heating element and an outer thermally transmissive, peak temperature mitigating, and an electrically insulative cover material encompassing the resistive heating element. A method is also provided.

An optical face protection shield is provided having a support body, an optic lens, and an elongate heater. The support body has a user interface. The optic lens is carried by the support body over a user's face configured to protect a user. The elongate heater is carried by the optic lens so as to traverse an expansive surface area of the optic lens. The elongate heater has an elongate resistive heating element and an outer thermally transmissive, peak temperature mitigating, and an electrically insulative cover material encompassing the resistive heating element. A method is also provided.

Disclosed is an aerosol generating system including a cigarette and an aerosol generating device. The cigarette may include a first substrate section and a second substrate section which include a non-tobacco material sheet containing an aerosol generating material, and the aerosol generating device may include a single heater disposed so that a heating area of the first substrate section is different from a heating area of the second substrate section.

Air circulation-type electric roaster includes body, air dispersing plate unit mounted on the body and including bottom plate having at least one through hole and first and second side plates formed respectively on both sides of the bottom plate and each having a plurality of ventholes, power supply unit including first and second power supply units, heating unit including first power connecting unit connected to the first power supply unit, air circulation unit arranged inner side of first long side of the body along its longitudinal direction and including second power connecting unit connected to the second power supply unit, body connecting unit mounted on first short side of the body and including first connecting terminal connected to the second power connecting unit and contactable with the second power supply unit, and cooking unit above the heating unit including cooking surface heated by the heating unit.

Air circulation-type electric roaster includes body, air dispersing plate unit mounted on the body and including bottom plate having at least one through hole and first and second side plates formed respectively on both sides of the bottom plate and each having a plurality of ventholes, power supply unit including first and second power supply units, heating unit including first power connecting unit connected to the first power supply unit, air circulation unit arranged inner side of first long side of the body along its longitudinal direction and including second power connecting unit connected to the second power supply unit, body connecting unit mounted on first short side of the body and including first connecting terminal connected to the second power connecting unit and contactable with the second power supply unit, and cooking unit above the heating unit including cooking surface heated by the heating unit.

An electric heater to heat a flow of a fluid having a jacket block comprising a plurality of longitudinal bores to allow the through-flow of a gas phase medium. An elongate heating element extends through each of the bores and is positionally stabilised within the jacket block via a plurality of stabilising fins that project radially inward to at least partially surround the elongate heating element within each of the bores.

An electric heater to heat a flow of a fluid having a jacket block comprising a plurality of longitudinal bores to allow the through-flow of a gas phase medium. An elongate heating element extends through each of the bores and is positionally stabilised within the jacket block via a plurality of stabilising fins that project radially inward to at least partially surround the elongate heating element within each of the bores.

A heat exchanger includes a heater including a ceramic body being tubular and a heat element embedded in the ceramic body, and a water receiver being tubular. The water receiver has a first end being through a first end of the ceramic body and located inside the ceramic body. The first end of the water receiver is at least partially nearer a second end of the ceramic body than an end of the heat element nearer the first end of the ceramic body.

Provided are a heating sheet, a heating tube, and an electric appliance. The heating sheet includes a graphite sheet substrate. The graphite sheet substrate includes a heating region and a buffer region. The buffer region is located at two ends of the graphite sheet substrate. The heating region is connected to the buffer region, and located on a side of the buffer region facing away from the two ends. The heating region includes a hollow zone. A duty ratio of the buffer region is greater than a duty ratio of the heating region. The heating sheet has advantages of good impact resistance and strong anti-fracture performance.