US1445019A

US1445019A - Electric water heater

Info

Publication number: US1445019A
Application number: US558745A
Authority: US
Inventors: Josechke Franz
Original assignee: HYDROTHERM FABRIK ELEK SCHER A
Current assignee: HYDROTHERM FABRIK ELEK SCHER A; HYDROTHERM FABRIK ELEKTRISCHER APPARATE GmbH
Priority date: 1922-05-05
Filing date: 1922-05-05
Publication date: 1923-02-13
Anticipated expiration: 1940-02-13

Description

Feb. 18, 1923. 1,445,019. F. JOESCHKE.

ELECTRIC WATER HEATER.

FILED MAYS. 1922.

(1 Fig.4. E O

M?" a" I @WW W aziaru vs.

Patented Feb. 13, 1923.

UNITED STATES PATENT OFFICE.

FRANZ JOESCHKE, O1? BERLIN, GERMANY, ASSIGNOR TO HYDROTHEBM FABRIK ELEKTRISCHER APPARATE G. M. B. H., OF BERLIN, GERMANY.

ELECTRIC WATER HEATER.

Application filed May 5,

inn-lip. nany have invented cert v. and us .i. lniproi'cinents in an F717 is ater cat-r2. e"? which the follow s iecification.

This invention relates to water heater-s i id its purpoi'se is to provide a device which is particularly adapted to be used a faucet in connection with a water pipe for supplying heated water. The principal object of the invention is to provide improved means for coi'itrolling the flow of water through the heating device and for simultaneously regulating the circuit of the clerk-- tric heating element, thereby preventing the operation. of the heating apparatus when. water is not flowing through the device. A- further object to provide an improved arrangement of water circulating channels and heating elements in the body of the heating device in order to assure a more rapid and efficient heating of the water. Other objects relate to various features of construction and arrangement which will appear more clearly hereinafter.

The nature of the invention will be nu derstood from the following specification taken with the accompanying drawings in which. one embodiment is illustrated. ln the drawings Fig. 1 shows a longitudinal vertical section through the device; Fig. 2 shows a cross section on the line (1 4; of Fig. 1 and Fig. 3 shows a cross section on the line c-d of Fig. 1.

The electric hot water heater of the present invention comprises a casing B having an internal cylindrical chamber closed at its upper end by a cap V. The casing has an auxiliar top portion A which seats on the casing li and fits over the cap V, these parts being rigidly secured together by any means suitable for the purpose. The top casing A is provided with an internal chamber having a cylindrical opening at one end to receive a tubular member R. The member R is internally threaded for connection with a water supply pipe and. this threaded portion communicates with a conical passage having mounted therein a tapered cock lug D which is mounted on a shaft 0. acking material W is mounted in a recess in the member R around the shaft 0 at the small end of the plug D, and the plug is main- 1922. Serial No. 558,745.

tained in close frictional engagement with the tapered passage of member R by the nuts X which are mounted on the shaft 0 The shaft 0 projects through the end of the wall of the upper casing A and has an operating handle or wheel Q secured to the extremity thereof. A contact cam or wheel E is secured to the shaft 0 within the chamber of the casing A and this cam wheel is adapted to control the connection of two spring plates F upon rotation of the shaft. The spring plates are mounted in the casing B which, like the casing A. is preferably formed of porcelain, and these plates are connected in. the circuit of the heating element hereinafter described, so that the rotation of the shaft 0 and the cock plug D serves to control the circuit of the heating element.

The cock plug D has an axial passage J leading from the end thereof and communieating with a transverse passage K which terminate in an arcuate groove formed in the outer wall of the plug D, as shown par ticularly in Fig. 3. When the plug D is in the proper position, the passages J and K are adapted to form a communication be tween the water inlet pipe connected to the member R and an inlet passage N which leads downwardly through the wall of the member R and through the cap V to coinmunicate finally with the heating channels S which. are formed in the body member C located in the chamber of the casing B. The body member C is cylindrical in form and the heating channels S are arranged vertically and distributed around the central part thereof as shown in Fig. 2. The adjacent vertical channels are connected alternately at their upper and lower ends by means of cross passages T, thus forming a continuous zigzag passage way through the body member, this passage communlcating at one end with the inlet passage N, previously referred to. and communicating 100 at the other end with the outlet pipe P through which the heated water flows. The body member C is mounted within a cylindrical sheet of heat-insulating material and circular sheets M of packing material are 105 maintained in tight contact with the upper and lOWer ends of the body C by means of pressure plates L which are connected by a bolt G passing through a hole in the central part of the body member. The heating 110 passage formed through the body member has a helical heating element, formed suitable electric resistance wire, mounted therein, and the terminals of ti is heating element are connected in any suitable manner in an electric circuit which includes: the contact springs l previously described.

In starting the apparatus the handle Q is rotated to the left and when a communication is firstestablished between the passage K and the inlet passage N, water of normal temperature is discharged through the outlet pipe P. Further rotation oi the handle Q1 causes the springs F to be brought in contact with: each other by the operation oi the cam wheel ll) and a circuit is thereby established through the heating element Y with the result that the water discharged through the pipe P raised in ten'iperature. When the communication is first established between the passage J of the plug D and the inlet tube N, the maximum flow of water is established through. the heating passages so that when the springs F are brought into contact by the cam wheel E, the water discharged irom the heating device is heated only to a n'iedium degree. A continued rotation of the handle Q, in the same direction results in a gradual increase in the temperature of tie water discharged, owing to the taper oi the arcuate groove at the outer end of the passage K, whereby the cross sec tion of the opening between the channel. J and the inlet passage N is varied as the plug D is rotated.v When theend of the tapered groove in theplug D arrives at the edge of the inlet passage N, resulting in a complete stoppage of the How of water, the springs F are automatically separated by the cam wheel E so that operation of the heating element, when no water is flowing through the heating passage, is prevented. The mounting of the body G in a packing of heat insulating material and the zigzag arrange ment of the heating passages thercthrough results in the rapid and efficient heating of the water and makes it possible to construct the apparatus in very compact form so that it can be conveniently attached to water pipes or faucets already in use.

Although I have shown and described a certain :Eorm oi the invention for the. purposes of illustration, it will. be understood that it may be constructed in various other embodiments without departing from the scope of the appended claims.

I claim: I p

i 1 Anelectric water heater comprising a casing, a, cock plug rotatively mounted in said casing, said plug having a passage terminatlng in a tapered groove, and a body member having a, heating passage communieating with the passage in said plug.

2.,An electric water heater comprising a casing, a tubular member mounted in said casing 'a tapered opening there in, a tapered cock plug rotatively mounted in said opening, said plug having a passage extending inwardly from the end thereot and then transversely, said tubular member hav ing an opening in its wall to communicate with the transverse passage 1n said plug,- means for connecting said tubular member with a source of water supply, and heating apparatus communicating with openlng in the wall of said tubular member.

3. An el ctric water heater connnising casing, a tubular member mounted in said casing and having an opening therein, a cock plug mounted in said opening, a shaft connected to said cock plug, said tubular member and said plug having passages therethrough, a body member h aving a heating passage communicating with the passage in said tubular member, a heating element mounted in said. heating passage, and means comprising a cam wheel mounted on said shaft for controlling the operation of said. heating element.

l. An electric water heater comprising a casing, a horizontal shaft journalcd in said casing and projecting therefrom, a tubular member mounted in said casing and engaged by said shaft, a cock plug mounted on said shaft within said tubular member, a heating body mounted beneath said cock plug and having a heating passage therctlu'ough, said tubular member and said plug having passages adapted to control the How of water into said heating passage, a heating element mounted in said heating passage, and means actuated by said shaft for controlling the operation of said heating element.

5. An electric water heater comprising a casing, a body member mounted in said casing and having a plurality of vertical passages therein connected alternately at opposite ends to form a single continuous zigzag heating passage, an electric heating element mounted in said heating passage and means for controlling the operation of said heating element.

6. An electric water heater comprising a casing, a body member mounted in said casing andhaving a plurality of vertical passages therein connected at alternate ends to form a single continuous heating passage, packing plates engaging opposite ends of said body member, pressure plates mounted on the outer sides of said packing plates and means extending through said body member for connecting said pressure plates.

7. An electric water heater comprising a lower main casing, a heating body mounted in said lower casing, and having a heating passage therethrough, an insulating member extending around said heating body, packing members mounted above and below said heating body, a cap member mounted on said casing over said heating body, an upper easing mounted on said lower casing, means carried by said upper casing for controlling the flow of water through said heating passage, an electric heating element mounted in said heating passage and means carried by said upper casing for controlling the operation of said heating element.

8. An electric water heater comprising an upper casing, a cock plug mounted in said upper casing, and having a longitudinal passage and a cross passage therein, a main casing, a heating body mounted in said main casing and having a heating passage therein, a helical heating element mounted in said heating passage, and a contact switch mounted upon the axle of said cock plug for controlling the flow of current through said heating element.

9. An electric water heater comprising an upper casing, a cock plug mounted in said upper casing, and having a longitudinal passage and a cross passage therein, said plug having a conical. channel communicating with said cross passage and terminating in the periphery of said plug, a main casing, a cylindrical body in said main casing having a plurality of interconnected heating channels communicating with the cross passage of said cock plug, heating elements mounted in said heating channels, packing plates at the top and bottom ends of said heating body, pressure plates engaglng sald pack ng plates, cont-act springs in said upper casing and a cam wheel mounted upon the axle of said plug for controlling the operation of said. contact springs.

10. An electric water heater comprising an upper casing, a plug in said upper casing having a longitudinal passage and a cross passage perpendicular to said longitudinal passage, said plug having a conical. channel communicating with said cross passage and terminating in the periphery of said plug, a. main casing, a cylindrical body in said main casing comprising a plurality of interconnected heating channels communicating with the cross passage of said cock plug, heat ng elements in said heating channels, packing plates at the upper and lower ends of. said heating body, pressure plates engaging said packing plates for pressing the same against the said heating body, contact springs located in said upper casing, a cam wheel mounted upon the axle of said cock plug for controlling the operation of said contact springs, and an outlet tube communicating with the discharge end of said heating channels.

In testimony whereof I aflix my signature.

FRANZ JOESCHKE.