摘要:
The invention relates to a method of determining a water hardness level of water, especially for determining the water hardness of water used by a household appliance (1), wherein - at least two electrodes (16) are exposed to the water; - an electric voltage acts on the at least two electrodes (16), wherein the electric voltage is an alternating electric voltage having a predetermined frequency range, wherein the frequency range is provided by a frequency sweep; - in response to the electric voltage acting on the electrodes, respective electric currents are measured for the different frequencies of the frequency sweep, and - respective electric impedance values are calculated for the frequencies based on the electric voltage and the electric currents measured, wherein the electric impedance values are processed by an analyzing apparatus (13) connected with the electrodes (16) which is configured to use a machine-learning model based on supervised learning.
摘要:
A flow through chemical sensor includes a housing having a through passage along which chemical can flow, a sidewall of the housing having first and second openings that communicate with the through passage. A first electrode is mounted on the housing and aligned with the first opening, the first electrode of a plate configuration with a unitary depression that extends through the first opening and to a peripheral edge of the through passage. A second electrode is mounted on the housing and aligned with the second opening, the second electrode of a plate configuration with a unitary depression that extends through the second opening and to the peripheral edge of the through passage. A method of detecting presence or absence of chemical is also provided.
摘要:
A dishwasher (10) for treating dishes according to a cycle of operation includes a tub (14) at least partially defining a treating chamber (16), a liquid supply conduit (42), and a rotatable sprayer (26, 28, 30, 32) that is rotatable about a rotation axis and has an inlet (102) and multiple nozzles (64) collectively forming an outlet. The dishwasher (10) further includes a hydraulic drive (100) fluidly coupling the liquid supply conduit (42) to the rotatable sprayer (26, 28, 30, 32). The hydraulic drive (100) is mechanically coupled to the rotatable sprayer (26, 28, 30, 32).
摘要:
The present invention relates to a dishwasher (1) wherein the deviation created in the turbidity sensor (5) measurement caused by the turbulence generated due to the water direction and intake speed into the washing chamber (2) or the motion of the spray arms (4, 104) during the washing steps is maintained to be constant and thereby the program and program parameter selections can be made with a high precision.
摘要:
The invention describes a sensor device (1) and a method for detecting the turbidity of wash liquor with an optical transmitter (3) and an optical receiver (4), wherein the wash liquor to be tested flows between the transmitter (3) and the receiver (4). The sensor device (1) comprises an electronic evaluation device (11) which is designed to (a) use the optical transmitter and the receiver to carry out a reference measurement in order to determine a reference measured value (CG); (b) use the optical transmitter and the receiver to carry out a turbidity measurement on the wash liquor to be measured in order to determine a test measured value (MG); (c) relate the reference measured value (CG) to the test measured value (MG); and (d) determine a characteristic value (turb) for the determined turbidity of the wash liquor therefrom and to emit said characteristic value as a measurement signal. According to the invention, the determination of the reference measured value and the determination of the test measured value involve determining a gradient of the turbidity.
摘要:
A dish washer comprises a washing tub (10) having a sump (12), at least one spraying nozzle located within the washing tub, means for feeding fresh water into the sump, a circulation pump (14) for circulating process water from the sump (12) to the spraying nozzle and a conductivity sensor (24) for measuring the conductivity of the fresh and/or the process water. In order to enable use of a single conductivity sensor (24) for measuring the conductivity of both the fresh and the process water, the conductivity sensor (24) is located in a conduit (20) for feeding fresh water into the sump (12) and there further is provided a bypass line (34) which is arranged to cause process water to flow through the conductivity sensor (24) when the circulation pump (14) is in operation.