In the United States and Canada, an Electric Blanket is a blanket with an integrated electrical heating device usually placed above the top bed sheet. In the United Kingdom and Commonwealth, electric blanket commonly refers to an electric underblanket (electric mattress pad), which is placed below the bottom bed sheet. Electric blankets usually have a control unit which adjusts the amount of heat the blanket produces. Blankets for larger sized beds often have separate controls for each side of the bed. The electric blanket may be used to pre-heat the bed before use or to keep the occupant warm while in bed.
Some modern "low voltage" electric blankets (such as Car Blanket) have thin carbon fiber wires and work on 12 to 24 volts. These blankets are more comfortable and even safer than ordinary 110/240 volt blankets.
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Dynamic resistance balancing valve installation and use
The use of dynamic resistance balancing valve Dynamic resistance balancing valve is suitable for central heating system, the installation of the hot network of the valve so that the heat network is easy to achieve static, dynamic balance. Support the heat source as the active variable flow operation. In the user room to install thermostatic valve, thermostat and other controlled devices can be converted into differential pressure control valve to achieve user-based variable flow control. In the heat network at the beginning of regulation, the locking device is fully open, the valve by self-flow control valve to adjust the method of regulation, heat users flow quickly reach equilibrium, played a self-flow control valve in the heat balance control The advantages. Then the locking device is activated and the valve becomes a static balance valve with variable flow capacity. Due to the balance of the resistance of all the hot users, when the circulating pump regulates the variable flow, the flow rate of each user will change proportionally and the balance will still be maintained. Self-operated flow control valve constant flow and static balance valve variable flow, two functions can be converted according to specific needs. Household metering, connected to the pressure tube can be used as a self-operated pressure control valve. Dynamic resistance balancing valve installation diagram installed in the user return pipe to ensure that the user pressure is constant, the figure â‘ â‘¡ â‘¢ for the user system. Note: the arrow direction of the valve must be consistent with the direction of the flow of water; control the front end of the conduit and the water supply pipe connection at the installation of cut-off valve for debugging, sewage use. This article Keywords: valve