Abstract: The present invention generally relates to a hot molten adhesive application machine. More specifically the present invention discloses a unique hot melt adhesive application machine having a novel construction whereby the reservoir of molten adhesive material is heated from within the molten adhesive. The adhesive pump, discharge hoses, and discharge applicators are heated by electrical resistance heating elements that may operate on 120 or 240 volt current. Further, a novel axial pump piston is disclosed whereby the pump cylinder bore may be machined to a lessor tolerance standard than previous pumps of this type.

Abstract: A thin, flat paperboard inserter or “needle” which is longer than the blood warmer heating plates is attached to the edge of the flattened tube envelope to enter the very narrow gap between the heating plates. The inserter is fed between the heating plates and advanced to emerge from the other end of the blood warmer where it is grasped and used to pull the envelope into operational position. A high air flow hydrophobic vent with check valve to prevent reverse flow is incorporated into the drip chamber to allow automatic priming and venting of air bubbles. A conductively heated and externally insulated drip chamber holder and a patient intravenous line that is passively insulated by a small annular air space extruded as part of the tube preserve heat in the warmed fluid, improving low flow rate performance. A reusable external heater may optionally be applied to the distal portion of the patient line to provide normothermic fluid to the patient down to essentially zero flow rate.

Abstract: Water flow heater with a first heater element (20) for supplying a fixed power, a second, controllable heater element (30), a temperature sensor (40, 50) for measuring the temperature of heated water, and a control unit (22, 32, 80) for controlling the heat supply from the second heater element (30) in dependence on a temperature detected by the temperature sensor (40, 50). A water flowrate lying within a predetermined range is safeguarded in that a pump (60) is provided for generating a water flow through a channel (13), and the control unit is designed so as to activate the heater elements (20, 30) in dependence on activation of the pump (60). As a result, the first heater element (20) of fixed power can have a comparatively high power rating without the risk of water being too strongly heated thereby.

Abstract: A multiloop temperature-control system has a hydraulic bus connected to a plurality of loops for the temperature-control medium and respective hydraulic modules connected to the hydraulic bus, and through the hydraulic bus, to these loops. Plug connectors join each hydraulic module with an electrical supply and control module and the supply and control modules in turn are connected by plug and jack connectors to an electrical bus.

Abstract: The invention relates to a device for the continuous heating of a liquid, such as water, to a constant temperature, particularly for domestic applications and more specifically for preparing coffee. The device includes a reservoir of water at ambient temperature, a pump, a heating unit whose electrical power supply is controlled by a switch, and a user outlet for delivering liquid at the desired temperature. The device also includes a component for regulating the flow rate of cold water delivered by the pump to the heating unit controlled by the temperature of the liquid leaving the heating unit and a component for recirculating water leaving the heating unit to the reservoir or to the inlet side of the pump for as long as this water has not reached a the constant operating temperature. The recirculation unit is controlled by the temperature of the water leaving the heating unit. The control is achieved by the use of a rated valve on the heated liquid outlet.

Abstract: A method for heating water rapidly at low power requirement includes the steps of (1) energizing and heating a heating element of a first heating device for a first period; (2) simultaneously de-energizing the heating element of the first heating device, forcing cold water to flow from a first reservoir to a second reservoir via the first heating device such that the cold water is heated to form warm water, and energizing and heating a heating element of a second heating device for a second period; and (3) simultaneously de-energizing the heating element of the second heating device and forcing the warm water from the second reservoir into the second heating device such that the warm water is heated to form hot water.

Abstract: A thermostatic heating device for liquids, provided with a recirculation pump, comprising a heat-insulating dielectric material outer housing, a heat-conductive dielectric material inner casing, a resistive film interposed between said outer housing and said inner casing, and a tube of heat-conductive material positioned in the interior of said casing, said tube being lowerly open to house an impeller of a pump applied to one end of said cylindrical housing.

Abstract: A small portable steam generating system comprised of an elongate cylindrical cylinder having a turbulent baffle circulation system. The steam generator includes a plurality of baffles, having alternating ports spaced along the length of the cylinder. The baffles have ports offset at 180° respectively to each other to provide turbulent flow that speeds up and slows down as it passes through the ports. The series of baffles in the elongate cylinder are mounted around a centrally located heater. The surfaces and ports in the baffles, positioned along the elongate cylinder and heater body, form a diffused turbulent flow of variable length and time as it passes from an input to an output. The steam generating system described herein is fitted with a steam water droplet separation system plus a high pressure steam superheater fitted to an exit tube and a non-conductive high temperature tube for transporting super-heated steam to a surface cleaning applicator.

Abstract: Water flow heater with a first heater element (20) for supplying a fixed power, a second, controllable heater element (30), a temperature sensor (40, 50) for measuring the temperature of heated water, and a control unit (22, 32, 80) for controlling the heat supply from the second heater element (30) in dependence on a temperature detected by the temperature sensor (40, 50). A water flowrate lying within a predetermined range is safeguarded in that a pump (60) is provided for generating a water flow through a channel (13), and the control unit is designed so as to activate the heater elements (20, 30) in dependence on activation of the pump (60). As a result, the first heater element (20) of fixed power can have a comparatively high power rating without the risk of water being too strongly heated thereby.

Abstract: A method for heating water rapidly at low power requirement includes the steps of (1) energizing and heating a heating element of a first heating device for a first period; (2) simultaneously de-energizing the heating element of the first heating device, forcing cold water to flow from a first reservoir to a second reservoir via the first heating device such that the cold water is heated to form warm water, and energizing and heating a heating element of a second heating device for a second period; and (3) simultaneously de-energizing the heating element of the second heating device and forcing the warm water from the second reservoir into the second heating device such that the warm water is heated to form hot water.

Abstract: A thermostatic heating device for liquids, provided with a recirculation pump, comprising a heat-insulating dielectric material outer housing, a heat-conductive dielectric material inner casing, a resistive film interposed between said outer housing and said inner casing, and a tube of heat-conductive material positioned in the interior of said casing, said tube being lowerly open to house an impeller of a pump applied to one end of said cylindrical housing.

Abstract: A heater for providing steady-temperature heated water for domestic hot water or hygienic purposes. Water is heated in a drum-shaped tank that is divided into two chambers by a piston that can slide longitudinally within the tank. Attached to the tank is a reverse value that can direct cold water from an inlet into either chamber and direct heated water from the other chamber to an outlet leading to a heated water use. Electric component and a cycle regulator control the direction of water flow through the reverse valve and the direction of motion of the piston. When there is a demand for heated water, the cycle regulator causes the piston to move to expel heated water from one chamber while concurrently cold water enters the other chamber. After heated water is expelled from that chamber, the cycle is reversed. Because cold water and heated water are in separate chambers steady-temperature heated water can be maintained. Either electricity or gas can be used in heat water in the tank.

Abstract: The inside of a vacuum pump is heated by means of a first heating unit to a temperature higher than the temperature at which products of reaction discharged from a process chamber are separated, and the inner surface of an exhaust pipe is heated to a temperature higher than the separation temperature by means of a second heating unit. If a vacuum process is carried out in the process chamber in this state, exhaust gas discharged from the process chamber can pass in a gaseous phase through the exhaust pipe and the vacuum pump without separating its unwanted by-products. Since a trap unit is located on the downstream side of the vacuum pump, moreover, the reaction products and the like can be prevented from adhering to the inside of the vacuum pump so that the maintenance operation is easier, although the conductance of the exhaust pipe is lowered so that the trap unit and the vacuum pump can be reduced in size.

Abstract: A hot mix applicator having a hose for transporting heated flowable material, preferably hot mix material, that has an outer casing telescoped over a flexible inner conduit. Slidably, telescopically received within the conduit is tubing comprised a single strip of thin metal helically coiled such that adjacent edges engage to form axially compressible tubing which limits bending to resist conduit kinking and crush. The conduit is attached at each end to a fitting assembly with each fitting assembly immovably fixed by an outer collar to the casing for transmitting hose tension through the casing and away from the more fragile conduit. The casing is comprised of a rubber sidewall reinforced with wire for resisting kinking, crushing, and twisting. Preferably, there is a gap between the casing and conduit that helps insulate the conduit. Each fitting assembly preferably includes a swivel fitting at least partially received within the casing to insulate it.

Abstract: 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.

Abstract: The linear motor pump for a wave soldering apparatus comprises in accordance with the invention several pumping channels arranged substantially parallel to each other and separate from each other. It includes preferably a multiply segmented stator. Each stator segment has one pumping channel allocated to same. By means of this a homogeneous pumping performance i.e. homogeneous pumping pressure distribution over a practically arbitrary width is achieved, which leads to a homogeneous solder wave. By the arrangement of the pumping channels and the design of the stator in accordance with the invention a turbulent whirling of the solder is made practically impossible.

Abstract: A compact combined heater and pump is disclosed. There is a pump housing forming an internal pump chamber, the housing having both an inlet and an outlet and an opening therethrough. A drive shaft is rotatably mounted in the opening and is driven by a motor located outside the chamber. An impeller is mounted on the drive shaft within the housing and a heater is sandwiched in the chamber between the motor and impeller. Rotation of the shaft can draw liquid in from the inlet, past the heater and through the outlet. A cooling fan attached to the shaft for rotation therewith draws cooling air over control circuitry and then forces the air over the motor.

Abstract: Apparatus for heating and thermal decontaminating, e.g. sterilizing, pasteurizing and/or disinfecting, pumpable or pourable material, includes a microwave unit forming a treatment chamber for receiving the material transported along a passageway and for subjecting the material to microwave radiation. Two pumps are respectively situated upstream and downstream of the treatment chamber, with a pressure sensor being arranged between the pumps for generating a a signal commensurate with the pressure in the passageway between the pumps. The signal is transmitted from the pressure sensor to a control unit which is operatively connected to both pumps.

Abstract: An automatic noodle cooker which continuously and automatically supplies hot water while cooking long thin ingredients such as spaghetti. The noodle cooker comprises a hot-water boiler which is divided into several water storage spaces, for example four, and which allows the supplied water to flow from space to space, and where each storage space is equipped with its own heater. The water supplied to the first storage space is heated by the heater and then moves to the next storage space. The hot water is finally supplied from the last storage space through a hot-water supply pipe to a processing section where the ingredients are processed. If new water is supplied to the first storage space equal to the amount of water which was supplied from the last storage space, the temperature of the hot water in the last storage space does not drop very much due to the fact that there are several storage spaces.

Abstract: An electric thermos bottle capable of automatic water release/cutoff which has an automatic water release/cutoff power switch turned on by the weight of a cup placed thereon. When the power switch is on, it actuates an electric air pump inside the top head of the thermos bottle to produce compressed air which passes an air communicating pipe and enters the sealed thermos bottle. At this point, the air pressure in the thermos bottle suddenly increases and therefore, forces water reserved in the thermos bottle to automaticaly release from a blow off pipe before flowing into the cup below a water exit. When water in the cup reaches a predetermined level, the water completes an override circuit which includes conductive elements in the cup and the metal interior of the thermos, in order to disconnect the air pump and automatically discontinue the release of water.

Abstract: A method and apparatus to melt and withdraw petroleum residue from a storage site at a convenient location while causing the residue from more distant locations to melt and flow in a stream, to the removal location. A heated wand is utilized to heat the petroleum residue. The wand has one pivotally supported end and is moved in an arc about the pivotally supported end across the storage site with removal of heated petroleum residue occurring at substantially the center of the arc.

Abstract: A pipe thawing apparatus has a heat exchanger for heating water. An electric water pump has an outlet coupled to an inlet of the heat exchanger. A flexible feed tube is coupled to an outlet of the heat exchanger. The electric water pump has an electric motor that is coupled to a source of electric power through a cyclical power interrupting device. The cyclical power interrupting device cyclically connects and disconnects the electric motor of the pump to the source of electric power cyclically turning the electric motor on and off. The water pump thus supplies a pulsating stream of water to the heat exchanger which in turn feeds a pulsating stream of heated water into the flexible feed tube. The flexible feed tube is advanced in the pipe to be thawed so that a pulsating stream of heated water is directed into the pipe, preferably against the ice to be melted. A return line is coupled between the pipe and an inlet of the water pump so that the water used by the apparatus is continuously recirculated.

Abstract: A temperature control system for use with a fluid circulating system operable in a heating or cooling state to monitor and control the temperature and flow of fluid circulated through a remote liquid circulation manifold comprising a display/control panel to select the system operating parameters and provide a visual indication of the system status including operating temperature and fluid flow and a micro control including logic circuitry to receive input signals from the display/control panel and fluid circulating system and to generate system control signals to control the operation of the fluid circulating system and system indicator signals to provide the visual indication of system operations.

Abstract: Apparatus for changing the temperature of an infusible liquid from a first temperature to a second predetermined temperature. The apparatus includes a receiver assembly for changing the temperature of the liquid. The apparatus also includes a cartridge to be received in the assembly and which defines an enclosed passageway for movement of the fluid. The cartridge has a first end, a second end, a liquid inlet disposed adjacent the first end, a liquid output disposed adjacent the second end, and a first wall extending between the ends and made of a material having good heat transfer properties. The assembly includes a thermoelectric heat pump, and a slot is provided for releasably receiving the cartridge so that the heat pump engages the wall of the cartridge.

Abstract: A combination pump and heat exchanger assembly uses a cast metal pump case with two upwardly opening sockets receiving the lower ends of two tubes, one of them communicating through the case with the pump impeller intake and the other with the impeller discharge. The tubes are constructed to function as heat exchanger units and are removably secured to the case by threaded fasteners and are sealed therein by compression seals. The heat exchanger tubes may employ electrical heating units or chilled liquid piping units therein.

Abstract: An electric water warming system generally comprises a cylindrical first water storage tank to be installed in a vertical fashion, a water feed pipe connected to a bottom portion of the first water storage tank for feeding water therein, and a hot water flow-out pipe connected to a top portion of the water storage tank for flowing out hot water therefrom. A temperature of hot water stored in the water storage tank is detected by a detecting device at a plurality of levels thereof and a water feed side and a water flow-out side are connected through a circulation pipe. A second water storage tank is incorporated in the circulation pipe and a heater is disposed in the second water storage tank. A temperature of the hot water in the second tank is detected by another detecting device disposed at an outlet portion of the second water tank. A circulation pump is incorporated in the circulation pipe at a portion upstream of the second water storage tank.