초록 ▼

A machine for circulating cooling water through manufacturing process equipment includes a combination pump and heat exchanger assembly. The machine has a cast metal pump case with two upwardly opening sockets receiving the lower ends of two tanks, one of them "the suction tank" communicating throug

A machine for circulating cooling water through manufacturing process equipment includes a combination pump and heat exchanger assembly. The machine has a cast metal pump case with two upwardly opening sockets receiving the lower ends of two tanks, one of them "the suction tank" communicating through the case with the pump impeller intake, and the other "the discharge tank" communicating with the impeller discharge. The tanks are constructed to function as heat exchangers, and they are readily and removably secured to the pump case by threaded fasteners and are sealed therein by compression seals. The discharge tank has electrical heating elements. The suction tank has a motor-operated modulator valve precisely fixed thereon, so as to enable discharging excessively warm water from the process to drain while cool make-up water from city water supply is admitted through the suction tank to the pump. A controller including a microcomputer responds to temperature of water pumped from the machine through the process equipment to be temperature controlled, and returned to the machine, to control the electric heater and/or the modulator valve, as needed. A flow meter in the suction tank provides input to the controller to provide a display of the water flow through the process, and temperature sensors are used to provide input to the controller to display cooling water temperature change. This information can be combined to provide a display of the cooling load. The machine is self-contained and wheel-mounted for mobility to facilitate connection to and disconnection from the process equipment.

대표청구항 ▼

[ What is claimed is:] [1.] A heat transfer system for temperature control in a manufacturing process and comprising:a pump with a case having a pump intake passageway and a pump discharge passageway;a first tank receiver on the case and communicating with one of the passageways;a first tank receive

[ What is claimed is:] [1.] A heat transfer system for temperature control in a manufacturing process and comprising:a pump with a case having a pump intake passageway and a pump discharge passageway;a first tank receiver on the case and communicating with one of the passageways;a first tank received in the first receiver and having an inlet port for coolant from the process;a releasable fastener removably securing the first tank to the case;a tank discharge port in the first tank at a location remote from the first receiver;a second tank receiver on the case and communicating with the other of the passageways;a second tank received in the second receiver and having a heater inside the tank;a releasable fastener removably securing the second tank to the case;a second tank discharge port in the second tank at a location remote from the receiver;the second tank receiver communicating with the pump discharge passageway and the first tank receiver communicating with the pump intake passageway, the combination further comprising:a modulator valve having an inlet at the first tank discharge port and having an outlet to drain;a temperature sensor for fluid passing through the second tank to the discharge port for delivery to the process;a temperature sensor for fluid passing from the process into the first tank; a controller coupled to one of the temperature sensors and to the modulator valve and operable in response to increasing temperature in one of the tanks to operate the valve to increase flow from the outlet to drain;a process using circulating water for process equipment temperature control and having an inlet and an outlet;the second tank having a discharge port coupled to the process inlet for delivering water from the pump discharge passageway to the process inlet;the first tank having an inlet port coupled to the process outlet for receiving water from the process and delivering received water through the first tank to the pump intake passageway: andflowmeter apparatus adjacent the first tank receiver and responsive to the flow into the pump case.