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A circulating pump – a device that causes the flow of liquid in circuits of heating or cooling installations. The circulating pumps are used only as centrifugal pumps. The basic elements of the centrifugal pump are coiled housing with two ports, suction and discharge, and what is more, blade rotor mounted on a shaft driven be an electric motor. The ports of the circulating pump can be arranged in one axis or suction axis that can be perpendicular to the axis of discharge port. The mechanical energy delivered to the circulating pump via motor is transmitted through the rotor to the liquid flow causing the increase in pressure and speed. The energy increase of the liquid occurs only in the circulating pump rotor, which is the only element of the energy transmission. However, in the remaining parts, one type of energy changes into another e.g. kinetic energy into pressure energy. For instance, in the coiled shaped housing, part of kinetic energy changes into potential energy, which causes a further increase in the fluid pressure. Pressure generated by the pump is used to overcome resistance of the liquid flow through the heating or cooling circuit.
Ice crystal evaporator and ice crystal water cooling device producing from same
ActiveCN102095290AWon't burstShort flow timeIce productionEvaporators/condensersCooling temperatureEvaporator
The invention relates to an ice crystal evaporator and an ice crystal water cooling device producing from the same, belonging to the technical field of refrigeration. The ice crystal evaporator is characterized in that a liquid inlet channel is formed by an evaporator tube, a liquid inlet and a liquid outlet in a tubular casing; and the outer channel of the evaporator tube of the tubular casing is divided into more than one S-shaped channel forming a water return channel through a water inlet of a water divider and a water outlet of a water collector. The ice crystal water cooling device is characterized in that the return air inlet of the ice crystal evaporator is communicated with a compressor, a condenser, a liquid feeding valve, a dry filter, a liquid feeding electromagnetic valve anda thermostatic expansion valve in sequence, and then is communicated with the liquid inlet of the ice crystal evaporator; a cooling water inlet / outlet of the condenser is connected with a cooling tower in series; and a water inlet / outlet of the ice crystal evaporator is communicated with a water circulating pump and an ice crystal energy storage tank in series. The invention has the advantages ofhigh cooling efficiency, no icing and low cooling temperature and is suitable for production of energy storage central air-conditioning, marine fishing, seafood processing, fruit, vegetable or meat processing, and the like; the cooled medium is municipal water.
Owner:蒋军闽