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Dishwasher with conductivity measurement

一种洗碗机、电导率传感器的技术，应用在餐具的洗涤机/冲洗机、餐具的洗涤机/漂洗冲洗机零件、清洁设备等方向，能够解决增加系统复杂性和成本、不能定性地测量洁净水或处理用水电导率等问题

Inactive Publication Date: 2010-09-01
ELECTROLUX HOME PROD CORP NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although in this way it is possible to measure the conductivity of the clean water as well as the conductivity of the treated water, the solution presented in EP 0 686 721 B1 has the disadvantage that two conductivity sensors need to be provided, thus increasing the complexity and cost of the system
Although EP 1 688 529 A1 uses conductivity sensors only to detect changes in conductivity, in this configuration the conductivity of clean or treated water cannot be measured qualitatively because the water flowing through the conductivity sensor must pass through Detergent drawer, detergent drawer may contain unknown amount of detergent powder at any time of measurement

Method used

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  • Dishwasher with conductivity measurement
  • Dishwasher with conductivity measurement
  • Dishwasher with conductivity measurement

Examples

Experimental program
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Embodiment Construction

[0026] exist figure 1 shows the lower part of a sink 10 of a dishwasher which may be equipped with one or more racks for holding items to be cleaned and nozzles which may be arranged in a conventional manner in a rotating The spray arm is installed below and above the bracket, and the water column can be guided to the articles to be washed by the spray arm. In the bottom of the washing tank there is a sump 12 in which the water which has been sprayed onto the items to be washed collects to be recirculated to the spray nozzles by means of a recirculation pump 14 which is A rotating spray arm not shown in the figures feeds. To this end, the inlet of the circulation pump 14 is connected to a suction pipe 16 , the other end of which leads to the sump 12 . On the outlet side of the circulation pump 14 is connected a pipe 18 for supplying process water to the rotating spray arms. In order to supply fresh water into the sump 12 a pipe 20 is provided which is connected to a water s...

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Abstract

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 for feeding fresh water into the sump 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.

Description

technical field [0001] The invention relates to a dishwasher comprising: a sink with a sump, at least one nozzle arranged in the sink, means for supplying clean water into the sump, A circulation pump for circulating the treatment water from the sump to the nozzles and a conductivity sensor for measuring the conductivity of the clean water and / or the treatment water. Background technique [0002] Such a dishwasher is known from US-A-4 211 517, which discloses a commercial dishwasher provided with a conductivity sensor arranged in a sump And used to measure the pH level in the sump to control the supply of detergent during the wash cycle. The dishwasher disclosed in US-A-4 211 517 is disadvantageous because it only allows the conductivity of the treatment water to be measured. The conductivity of clean water, which cannot be measured, can be used to determine water hardness or to provide a set point level of conductivity to be obtained for calibration. [0003] In order to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47L15/42
CPCA47L15/4297
Inventor J·博哈克R·施塔尔曼H·朗普
Owner ELECTROLUX HOME PROD CORP NV