摘要:
A dry fire protection system for a water heater is provided. The water heater includes a body having an elongated hollow for holding water to be heated, an inlet opening and an outlet opening in communication with the hollow for flowing water therethrough. A heating element is coupled to the body for heating the water within the hollow. The dry fire protection system comprises a sensing element disposed in the hollow of the body for detecting the presence of water in the hollow. The sensing element is spaced from and operably connected to the heating element. The sensing element is configured to generate a voltage in response to a temperature of the sensing element. A controller is operably connected to the sensing element for monitoring the generated voltage across the sensing element. The controller is configured to prevent a supply of electrical power to the heating element as a function of the generated voltage.
摘要:
A dry fire protection system for a water heater is provided. The water heater includes a body having an elongated hollow for holding water to be heated, an inlet opening and an outlet opening in communication with the hollow for flowing water therethrough. A heating element is coupled to the body for heating the water within the hollow. The dry fire protection system comprises a sensing element disposed in the hollow of the body for detecting the presence of water in the hollow. The sensing element is spaced from and operably connected to the heating element. The sensing element is configured to generate a voltage in response to a temperature of the sensing element. A controller is operably connected to the sensing element for monitoring the generated voltage across the sensing element. The controller is configured to prevent a supply of electrical power to the heating element as a function of the generated voltage.
摘要:
A method for heating water delivered and stored in a water heater storage tank includes activating at least one of dual fuel heater types in response to various modes of operation. The water heater is preferably a dual fuel or hybrid heat pump gas water heater that includes a heat pump as the first type of heater for heating the water, and a gas burner as the second type of heater that transfer heat to the water. One or more sensors monitor water temperature and communicate with a controller to activate one of, or both of, the first and second types of heaters. If there is an electrical power outage, the hybrid heat pump gas water heater is still able to heat the water.
摘要:
A vascular closure device (20) having a proximal end and a distal end is described. The vascular closure device may include an insertion sheath (28), a handle, and a locator anchor (38) positionable distally outside a distal end of the insertion sheath when the handle is in a first position. The handle may be movable from the first position to a second position located proximally relative to the first position, the locator anchor being configured to expand laterally when the handle is moved from the first position to the second position. Additionally, the handle may be movable from the second position to a third position located proximally relative to the second position to deploy a vascular closure implant in a puncture tract. A vascular closure method is also disclosed.
摘要:
A water heater and thermal mixing valve assembly and method for providing a reduced discharge water temperature and a hot water temperature from the same tank. The assembly includes a tank adapted to accept and store an amount of cold water, a heater to heat the cold water held in the tank and increase the cold water temperature to a predetermined hot water temperature, at least one thermal mixing valve integrated with the tank in communication with a hot water passage and a cold water bypass conduit to provide a discharge water of a controlled temperature, the cold water bypass conduit being mounted to the cold water passage allowing the associated cold water to communicate with the tank and the thermal mixing valve. An adjustment member is mounted to the thermal mixing valve to adjust a temperature range of the discharge water, a discharge output passage and a hot output passage provide communication with an associated piping system oriented to supply discharge water from the thermal mixing valve and hot water from the tank to associated plumbing fixtures.
摘要:
A duct adapter system directs air flow relative to a hybrid water heater. The duct adapter system includes a collar adapted to surround a vent of a hybrid water shroud. The collar couples to standard duct pipe to extend ductwork to a heat pump portion of the hybrid water heater. A boost fan may be included in the system for boosting air flow to or from a remote location. The duct adapter system is adapted to deliver a warm air supply to the heat pump from the remote location, or deliver the cool discharge air from the heat pump water heater to a remote location.
摘要:
A coupling for use in a rotary ball valve having a spherical ball with a passageway therethrough for controlling the flow of fluid through the valve. The coupling is particularly suited for use with non-metallic, for example, ceramic, spherical balls which are rotated by torque applied to a metallic actuator shaft. The coupling includes a plurality of depressions and protrusions formed at the interface of the non-metallic and metallic components. The depressions and protrusions are positioned away from the central axis of the spherical ball. A cushion can be interposed between the metallic and non-metallic components to further disperse the force applied to the non-metallic component. The depression and protrusions can be tapered and oriented at an angle with respect to the central axis so that as torque is applied to the shaft the non-metallic component is rotated without breakage thereof.
摘要:
A vascular closure device (20) having a proximal end and a distal end is described. The vascular closure device may include an insertion sheath (28), a handle, and a locator anchor (38) positionable distally outside a distal end of the insertion sheath when the handle is in a first position. The handle may be movable from the first position to a second position located proximally relative to the first position, the locator anchor being configured to expand laterally when the handle is moved from the first position to the second position. Additionally, the handle may be movable from the second position to a third position located proximally relative to the second position to deploy a vascular closure implant in a puncture tract. A vascular closure method is also disclosed.