A.o. Smith Corporation

Nanjing Tech University

Aos Holding Company

Hongfei Ma

Dayan Bi

Yonghua Cheng

Larry Chanasyk

Liliang Dou

Lei Cao

Hyungsik Lee

Tao Chen

Chen Wang

Jieqing Wu

Shufeng Liu

Zhihua Zhang

Gu Qinghai

Hongzhong Bu

Jiefan Gu

Hongjun Zhu

Yufeng Li

Jiwei Chen

Haoyue Zhang

The present disclosure discloses a water heater, and a scale detection system and method. The scale detection system comprises: a first temperature detector configured to acquire a first temperature of a heat exchange zone of a water heating device; a second temperature detector configured to acquire a second temperature indicating a water temperature in the water heating device; and a controller in communication with the first temperature detector and the second temperature detector, and configured to acquire a temperature difference between the first temperature and the second temperature based on the first temperature acquired by the first temperature detector and the second temperature acquired by the second temperature detector, and determine that a scale generation amount in the water heating device reaches a preset threshold when at least one of the following judgment conditions is met: the first temperature is not less than a preset temperature threshold; and the temperature difference is not less than a preset temperature difference threshold. The present disclosure can ensure that a user can be reliably and timely reminded to clean the scale under different working conditions.

Water heater, and scale detection system and method

Provided is a photo-oxidation reaction of benzylic C&#x2014;H bonds of an aromatic compound under the catalysis of an acid catalyst. The method aims to synthesize aromatic acids and acetophenones. The acid catalyst is one of Bronsted acids, including one or a mixture of two or more selected from the group consisting of hydrochloric acid, phosphoric acid, sulfuric acid, p-toluenesulfonic acid, methanesulfonic acid, trifluoromethanesulfonic acid, trifluoroacetic acid, and potassium hydrogen sulfate, as well as N-propylsulfonate pyridinium hydrogensulfate, N-butylsulfonate pyridinium hydrogensulfate, N-propylsulfonate pyridinium trifluoromethanesulfonate, N-butylsulfonate pyridinium trifluoromethanesulfonate, N-propylsulfonate pyridinium tetrafluoroborate, and N-butylsulfonate pyridinium tetrafluoroborate. The oxidation reaction is conducted under mild conditions (normal temperature and pressure) using air or oxygen as the oxidant in the presence of recyclable catalyst and solvent.

Acid-catalyzed photocatalyzed oxidation reaction of benzylic C&#x2014;H bonds of aromatic compound

A method of assembling multiple low NOburners including the step of assembling multiple bodies, each body including a multiple first burner ports connected to a first burner inlet and multiple second burner ports connected to a second burner inlet. The method also including the step of selecting one of the bodies and inserting a first inlet tube into the second burner inlet to provide a fuel/air mixture to the second burner ports at a first rate. The method also including the step of selecting one of the bodies and inserting a second inlet tube into the second burner inlet to provide the fuel/air mixture to the second burner ports at a second rate different than the first rate.

[object Object]

A method of assembling multiple low NOburners (), a low NOburners () and a tankless gas-fired water heater () are disclosed. The method includes the step of assembling multiple bodies (), each body () includes multiple first burner ports () connected to a first burner inlet () and multiple second burner ports () connected to a second burner inlet (). The method also includes the step of selecting one of the bodies () and inserting a first inlet tube () into the second burner inlet () to provide a fuel/air mixture to the second burner ports () at a first rate. The method also includes the step of selecting one of the bodies () and inserting a second inlet tube () into the second burner inlet () to provide the fuel/air mixture to the second burner ports () at a second rate different from the first rate.

A storage-type water heater includes a tank enclosing a volume of water, the tank having an upper portion and a lower portion, a chamber adjacent the lower portion of the tank and adapted to at least partially enclose a source of a heated fluid, and a helical tube heat exchanger at least partially enclosed within the tank and fluidly connected to the chamber. The helical tube directs the heated fluid from the lower portion to the upper portion of the tank and promotes heat exchange between the water in the tank and the heated fluid flowing therethrough.

Water heater

Growing community of inventors

Nanjing, China

Hongfei Ma