摘要:
A water stratification drum for use in an electric and condensing water heater is disposed in a lower portion of the water holding tank and across the circumferential side wall of the tank. The water stratification drum has a pair of plates held spaced-apart by support members which extend between the pair of plates to maintain the plates in substantially parallel relationship. A cold water zone is defined between the plates and cool domestic water is introduced in the tank between the plates. The plates are flat disc plates formed on non-corrosive material and water there between is diffused in a controlled manner to other regions of the tank through at least one of the plates being perforated. The diffusion of the water prevents premature actuation of the heat source by not causing an abrupt change in the temperature of the hot water in the tank.
摘要:
A water stratification drum for use in an electric and condensing water heater is disposed in a lower portion of the water holding tank and across the circumferential side wall of the tank. The water stratification drum has a pair of plates held spaced-apart by support members which extend between the pair of plates to maintain the plates in substantially parallel relationship. A cold water zone is defined between the plates and cool domestic water is introduced in the tank between the plates. The plates are flat disc plates formed on non-corrosive material and water there between is diffused in a controlled manner to other regions of the tank through at least one of the plates being perforated. The diffusion of the water prevents premature actuation of the heat source by not causing an abrupt change in the temperature of the hot water in the tank.
摘要:
A monitoring module for connection to a diagnostic device having two or more light emitting sources for indicating operating fault conditions of an apparatus. The monitoring module feeds information signals to a communication link for reception at a remote location. The monitoring module is secured over a series of light emitting diodes of the diagnostic device and reproduces these for local access. The series of LED's indicate fault conditions of the apparatus which in this embodiment is a hot water heater. Accordingly, the operation of the hot water heater at its fault status can be monitored from a remote location and on site.
摘要:
A passage is provided in a water heater and mounted against the outer surface of the water tank side wall to removably mount thermistors secured to a support at distinct locations along the tank side wall to provide temperature value signal representative of the water temperature in the tank adjacent the thermistors. The passage may be formed by a metal tube held next to the side wall of the tank or a U-shaped channel held against the outer surface of the tank wall with the through thereof facing the tank side wall outer surface. The thermistors are mounted spaced-apart on a support inserted in the passage. The method is also described.
摘要:
A domestic gas-fired water heater condensing flue system wherein in one embodiment a blower is secured at the outlet end of the flue pipe to direct the hot flue gases through an external heat exchange flue conduit. The external heat exchange flue conduit has a sealed water channel surrounding a narrow flue gas internal passage. Water from the bottom end of the tank is circulated in the external heat exchange flue conduit and release in the top part of the tank. In a further embodiment, an inverted U-shaped flue pipe is supported vertically in the water tank and the domestic water supply for the tank is disposed in a downward section of the flue pipe to pre-heat the water supply to the tank and cool the flue gases before being released to atmosphere. The water in the tank is heated by the upward and downward sections of the U-shaped flue pie
摘要:
A safety system and method to prevent water within a top portion of a tank of an electric water heater to drop below a safe temperature during a load shedding period, other than a full emergency grid failure, by a power provider whereby to prevent the propagation of harmful bacteria in a top portion the tank. A control device monitors the water temperature in the top portion of the tank by the use of a temperature sensor. If the control device detects a temperature of the water in the top portion of the tank inferior to 140 degrees F., it will by-pass the instructions of the power provider and connect power to one or more of the resistive heating elements of the tank until a predetermined temperature above 140 degrees F. is attained before switching off the resistive heating elements.
摘要:
A safety system and method to prevent water within a top portion of a tank of an electric water heater to drop below a safe temperature during a load shedding period, other than a full emergency grid failure, by a power provider whereby to prevent the propagation of harmful bacteria in a top portion the tank. A control device monitors the water temperature in the top portion of the tank by the use of a temperature sensor. If the control device detects a temperature of the water in the top portion of the tank inferior to 140 degrees F., it will by-pass the instructions of the power provider and connect power to one or more of the resistive heating elements of the tank until a predetermined temperature above 140 degrees F. is attained before switching off the resistive heating elements.
摘要:
An electric water heater is described and wherein a bottom resistive heating element extends in at least a portion of the cavitated circumferential area defined inside the tank between the tank side wall and the dome-shaped bottom wall and wherein deposits accumulate to create a culture medium for bacteria growth. The bottom resistive heating element heats water in this cavitated area to a temperature sufficient to sanitize a lower region of said water holding tank and to kill bacteria such as the Legionella bacteria.
摘要:
A double glass coated steel tank for a high temperature water heater and its method of fabrication is described. The tank is constructed of steel welded parts and fittings are secured to the tank without the presence of sharp edges being formed on the inner surface of the tank not to form any weakness in the composite glass coating to be applied. A first water resistant base coat of cobalt glass enriched with ZIRCON (trademark) is applied to the inner surface and the tank is heat fired at a high temperature in the order of about 1600 degrees F. A second high temperature water resistant glass coat, having a fine gas bubble size not exceeding 10 microns, is applied over the first coat and the tank is heat fired a second time. The composite glass coating thus formed is highly water and corrosion resistant in a water environment of up to at least 190 degrees F.
摘要:
A high efficiency condensing flue gas-fired water heater is provided with a secondary tubular flue mounted inside the water tank and secured thereto by dielectric connectors to electrically isolate the secondary tubular flue from the tank. The secondary tubular flue has an intermediate helical section and opposed connecting end sections which each form a part of the dielectric connectors. The connectors do not require any welding for its installation to the tank and a compression nut and dielectric insulators provide for a leak proof and electrically isolated connection. The method of securing the secondary tubular flue is also described.