MICRO-WAVE HEATER

• US 3,812,315 A
• Filed: 02/27/1973
• Issued: 05/21/1974
• Est. Priority Date: 02/27/1973
• Status: Expired due to Term

• Current Assignee: Norman Eugene Martin
• Original Assignee: Norman Eugene Martin
• Inventors: Martin, Norman Eugene
• Primary Examiner(s): Truhe, J. V.
• Assistant Examiner(s): Jaeger, Hugh D.
• Application Number:
  US05/336,220
• Time in Patent Office: 448 Days
• Field of Search: 219/10.51,10.55,10.65,10.81
• US Class Current: 219/688
• CPC Class Codes: H05B 6/804 Water heaters, water boilers

Abstract

A fluid, such as water, is heated on demand and supplied either hot or boiling by the device of the present invention which comprises, generally, a coiled tubular reservoir which is heated in different areas by a plurality of sequentially arranged pairs of dielectric plates. Micro-wave energy is supplied to the respective pairs of dielectric plates selectively by means of electrical switching mechanisms and thermostatic controls so that either hot or boiling water is quickly available and a continuous flow is maintained as required.

Claims

1. An apparatus for heating fluids contained therein or flowing therethrough, comprising a coiled tubular casing means open at opposite ends to define a passage therethrough and a reservoir for said fluids;

electrical means for producing and supplying micro-wave energy to a plurality of dielectric plates for heating said fluids, said electrical means comprising means for connecting therewith an external power source and thermostatically controlled electric switching means to control the temperature of fluids within said casing by selectively directing or terminating the flow of micro-wave energy to said dielectric plates;

said dielectric plates being arranged within said apparatus to provide micro-wave radiation to specific portions of said tubular casing within said total fluid reservoir by the placement of the respective pairs of said dielectric plates around or on each of said specific portions of tubular casing, fluid control thermostat means operably disposed within The fluid reservoir, an insulation blanket or container to surround the fluid reservoir and the positioned dielectric plates to retard heat loss from the fluids contained within the reservoir, a case to surround the total reservoir, dielectric plates and insulation blanket or container and to shield against the dissemination of micro-wave radiation beyond the enclosed system.

2. The apparatus of claim 1 which further includes a '"'"''"'"''"'"''"'"'T'"'"''"'"''"'"''"'"' juncture in said tubular casing upstream of the portions of said casing heated by the dielectric plates, said '"'"''"'"''"'"''"'"'T'"'"''"'"''"'"''"'"' juncture being operably connected with tubular means for directing a portion of the fluid entering the apparatus, unheated, around the heated portion of the apparatus.

3. The apparatus of claim 1 wherein said tubular casing terminates in two separate fluid delivery pipe means, one of which is provided with a fluid control thermostat which permits heated fluid to flow through at a predetermined temperature and the other of which is provided with a fluid control thermostat which permits boiling fluid to pass through it.

4. The apparatus of claim 1 in which three discrete portions of said tubular casing means are each respectively heated by a pair of dielectric plates operatively connected in said electrical system.

5. An apparatus for heating fluids contained therein or flowing therethrough comprising, in operative relationship, tubular casing means open at opposite ends to define a passage therethrough and a reservoir for said fluids;

three individual pairs of dielectric plates arranged to heat respectively, initial, secondary and boiling portions of said tubular casing means, electrical means for producing and supplying micro-wave energy to said dielectric plates, said electrical means comprising means for connecting therewith an external power source and thermostatically controlled electric switching means to selectively direct or terminate the flow of micro-wave energy to the respective pairs of dielectric plates so that fluid in said boiling portion of the tubular casing means may be heated to and maintained at boiling, and fluid in the initial and secondary portions of the casing means may be heated to and maintained at another lower, predetermined temperature;

said apparatus further comprising two separate fluid delivery pipe means disposed at the downstream terminus of said tubular casing means, one of said delivery pipe means being provided with a fluid control thermostat which permits heated fluid to flow through at a predetermined temperature and the other of which is provided with a fluid control thermostat which permits boiling fluid to pass through it;

each of said fluid delivery pipe means being also provided with valve means at its downstream end for controlling the flow of fluid therethrough, the delivery pipe means valve for carrying heated fluid being provided with switch means for directing all micro-wave energy to the dielectric plates which heat the initial and secondary portions of the tubular casing means when said valve is open; and

the delivery pipe means valve for carrying boiling fluid being provided with switch means for directing all micro-wave energy to the dielectric plates which heat the boiling portion of said tubular casing means when it is open.

6. The apparatus of claim 5 wherein said thermostatically controlled electric switching means, when the delivery pipe valve for heated fluids is opened, initially directs all micro-wave energy to the dielectric plates heating the initial portion of the tubular casing until said predetermined temperature is reached, and then directs the micro-wave energy between the plates heating the initial and secondary portions of the casing.