F-Term-List

F24H1/18;1/18@A-1/18@Z;1/20;1/20@A-1/20@Z

AA00
HEATING SYSTEMS THAT HEAT THE WATER OUTSIDE OF THE HOT-WATER STORAGE TANKS

AA01

AA02

AA03

AA04

AA06

AA08

. Externally heating heaters

. . External heating by means of combustion of gases

. . . Semi-storage types

. . . Provision of combustion chambers in the lower unit of the hot water storage tank

. . External heating by electrical resistors

. . External heating using devices other than gas-combustion electrical resistors

AA12

AA13

AA14

AA15

AA16

AA17

. . Structures of heat-circulation ducts

. . . Means for adjustment of the flow rate of circulation ducts

. . . Branched or multiple circulation ducts

. . . Means for deceleration of the flow-speed through the duct opening

. . . Tapping of hot water

. . . Use of a circulation-acceleration means

AA21

AA22

AA23

AA25

AA26

AA27

. External direct-heating types

. . Types that use combustible gases

. . . Use of flame-ducts along the outer circumference of the hot-water storage tank

. . Types that use electrical resistors

. . . Provision of electrical resistors on the bottom of the tank

. . . Provision of electrical resistors on the side of the tank

AA31

AA33

AA35

AA37

AA38

. Heating systems with a steam-generation means

. Heating systems with an induction-heating means

. Heating systems with a dielectric-heating means

. Combination of multiple heating systems

. Others

AB00
HEATING SYSTEMS THAT HEAT WITHIN THE HOT-WATER STORAGE TANKS

AB01

AB02

AB03

AB04

AB05

. Types that heat by combustion in the water

. . Structure of the gas-ejection units

. . Means for diffusion of combustion gases

. . . Use of a forced-diffusion means

. . Adjustment of pH

AB11

AB12

AB13

. Use of furnace pipes

. . Pulse-combustion types

. . Furnace pipes that are arranged horizontally

AB21

AB22

AB23

AB24

. Arrangement of electrical resistors within the tank

. . Use of multiple resistors

. . . Vertically-divided arrangements

. . Specific uses

AB31

AB32

AB34

AB36

AB38

. Immersion-heating types

. . Use of electrical resistors

. Electric-discharge heating types

. Electrode-heating types

. Other underwater heating systems

AC00
INDIRECT HEATING SYSTEMS

AC01

AC02

AC03

AC04

AC05

AC06

AC07

. External indirect heating systems

. External direct heating systems

. . Use of combustible gases

. . Use of electrical resistors

. Arrangement of heat exchangers inside the tank

. Indirect heating systems that use heat-pipes

. Other indirect heating systems

AD00
STRUCTURES OF WATER HEATERS THAT HAVE A HOT-WATER STORAGE MEANS

AD01

AD02

AD03

AD04

AD05

AD06

AD07

AD08

AD09

AD10

. Structure of water-supply units

. Structure of tapping units

. Heating chambers for hot water

. Means for guidance of circulation

. Means for separation of warm from cold water

. Means for release of air

. Heat insulation and heat radiation

. Structure and attachment of electrical resistors

. Water heaters with multiple hot-water storage units

. Others

3L025	Water heaters with a hot-water storage means
	F24H1/18 -1/18@Z;1/20-1/20@Z