CA1311531C - Microwave hot water heater - Google Patents
Microwave hot water heaterInfo
- Publication number
- CA1311531C CA1311531C CA 568642 CA568642A CA1311531C CA 1311531 C CA1311531 C CA 1311531C CA 568642 CA568642 CA 568642 CA 568642 A CA568642 A CA 568642A CA 1311531 C CA1311531 C CA 1311531C
- Authority
- CA
- Canada
- Prior art keywords
- hot water
- water
- magnetron
- microwave
- energy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/80—Apparatus for specific applications
- H05B6/802—Apparatus for specific applications for heating fluids
- H05B6/804—Water heaters, water boilers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/101—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply
Abstract
Abstract of the Disclosure This invention relates to an on line and on demand microwave hot water heater with variable flow rates according to magnetron power levels up to 2450 megahertz. The heated water flow rates lie in a range of to 25 gallons per minute. A convoluted waveguide receives electromagnetic energy from the magnetron and converts it to thermal energy and temperature rise for the water that flows through it. This is a total absorption of the microwave energy, that is, there is no energy leakage.
Description
1311 1~3~
This inventinn relates to a microwave operated water heater that has been developed for residential, commercial or industrial use, and that eliminates the hot water storage tank.
The heater unit has a cold water inlet at an upper end of its housing and a hot water outlet at an opposite upper end of its housiny. It will only operate while water is flowing through it.
The housinq contains a water flow path exposed directly to microwave power levels emanating from a 2450 mega-hertz maqnetron as the water passes through wave guides in the form of reverse bend tubes.
Electromagnetic energy is converted to thermal energy thus increasing the water's temperature.
The water flow rate, the mannetic power levels, the total length of the wave guide and a thermostat at the hot water outlet constitute the variables.
It has been found that hot water supply rates of 3, 5, 10 and 25 yallons per minute are obtainab~e because of the flexibility of the controls for supplying hot water on demand.
In operation, incoming cold water will go firstly through the magnetron to supply the cooling and a preliminary preheat for the water. When a water supply tap is opened, a flow switch will power the magnetron filaments and prepare the magnetron for the application of the high voltage. A time delay switch will then cause the high voltage to be applied when the magnetron is ready for `` 13~153~
hiqh power operation. The unit will only operate while water is flowing througll it.
Incoming cold water, after passing through cooling stages of the maqnetron, flows throuah a microwave isolating stub and into the convoluted wave guide. The water is at the desired temperature and exits from a microwave termination point at the thermostatically controlled temperature.
In further description of tlle invention reference is made to the accompanying drawings wherein:
Figure 1 is a side elevation of the heater unit.
As shown in Figure 1, the heater housing 1 contains a flow path 2 from a cold water inlet 3 to a hot water outlet 4 at an opposite end. Water entering at 3 passes into a water coolinq jacket 5, this jacket is superposed on and connected with a 245û mega-hertz magnetron 6, which is the energy source. The cold water inflow is subjected to a preliminary preheat by the magnetron.
This is initiated by water flow switch 7 when a tap is opened. A time delay switch will then bring the magnetron up to full voltage.
The water to be heated follows a sinuous path with 1 sn bends at 2a. It is in this tuhular path that electromaqnetic energy is converted to thermal energy with the concomitant temperature rise for the water. In further description, the sinuous path is more aptly referred to as the wave guide. The heated water exits through outlet 4 at a temperature dictated by power level 13~1531 thermostat S. A microwave isolator stuh 9 at the beginning of the wave guide and a microwave termination seal 10 at the end of the wave guide ensure that there is no microwave energy leakage from the system. Microwave power levels heat the water in stages until cold water is heated to a particular maximum. Power supply and power level controllers are shown in block diagram at 11.
Similarly, a switch panel is shown at 12. The heater unit is connected to 110/220 voltage mains and proximate to sink or tub.
This inventinn relates to a microwave operated water heater that has been developed for residential, commercial or industrial use, and that eliminates the hot water storage tank.
The heater unit has a cold water inlet at an upper end of its housing and a hot water outlet at an opposite upper end of its housiny. It will only operate while water is flowing through it.
The housinq contains a water flow path exposed directly to microwave power levels emanating from a 2450 mega-hertz maqnetron as the water passes through wave guides in the form of reverse bend tubes.
Electromagnetic energy is converted to thermal energy thus increasing the water's temperature.
The water flow rate, the mannetic power levels, the total length of the wave guide and a thermostat at the hot water outlet constitute the variables.
It has been found that hot water supply rates of 3, 5, 10 and 25 yallons per minute are obtainab~e because of the flexibility of the controls for supplying hot water on demand.
In operation, incoming cold water will go firstly through the magnetron to supply the cooling and a preliminary preheat for the water. When a water supply tap is opened, a flow switch will power the magnetron filaments and prepare the magnetron for the application of the high voltage. A time delay switch will then cause the high voltage to be applied when the magnetron is ready for `` 13~153~
hiqh power operation. The unit will only operate while water is flowing througll it.
Incoming cold water, after passing through cooling stages of the maqnetron, flows throuah a microwave isolating stub and into the convoluted wave guide. The water is at the desired temperature and exits from a microwave termination point at the thermostatically controlled temperature.
In further description of tlle invention reference is made to the accompanying drawings wherein:
Figure 1 is a side elevation of the heater unit.
As shown in Figure 1, the heater housing 1 contains a flow path 2 from a cold water inlet 3 to a hot water outlet 4 at an opposite end. Water entering at 3 passes into a water coolinq jacket 5, this jacket is superposed on and connected with a 245û mega-hertz magnetron 6, which is the energy source. The cold water inflow is subjected to a preliminary preheat by the magnetron.
This is initiated by water flow switch 7 when a tap is opened. A time delay switch will then bring the magnetron up to full voltage.
The water to be heated follows a sinuous path with 1 sn bends at 2a. It is in this tuhular path that electromaqnetic energy is converted to thermal energy with the concomitant temperature rise for the water. In further description, the sinuous path is more aptly referred to as the wave guide. The heated water exits through outlet 4 at a temperature dictated by power level 13~1531 thermostat S. A microwave isolator stuh 9 at the beginning of the wave guide and a microwave termination seal 10 at the end of the wave guide ensure that there is no microwave energy leakage from the system. Microwave power levels heat the water in stages until cold water is heated to a particular maximum. Power supply and power level controllers are shown in block diagram at 11.
Similarly, a switch panel is shown at 12. The heater unit is connected to 110/220 voltage mains and proximate to sink or tub.
Claims (2)
1. A microwave hot water heater comprising a magnetron energy source, a water cooling jacket superposed on the magnetron housing, laterally extending water carrying wave guides, a cold water inlet connected to an upper portion of the wave guide through a microwave isolator stub, a lower terminal end of the wave guide connected to a hot water outlet, a power level thermostat in the hot water outlet and an outer containment housing with plug-in means to an electrical supply of 110/220 volts.
2. The apparatus of claim 1 wherein the heated water exits the system through a termination stub and wherein hot water supply rates vary according to magnetron power levels and lie in a range of 5 to 25 gallons per minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 568642 CA1311531C (en) | 1988-06-03 | 1988-06-03 | Microwave hot water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 568642 CA1311531C (en) | 1988-06-03 | 1988-06-03 | Microwave hot water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1311531C true CA1311531C (en) | 1992-12-15 |
Family
ID=4138140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 568642 Expired - Fee Related CA1311531C (en) | 1988-06-03 | 1988-06-03 | Microwave hot water heater |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1311531C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1176370A2 (en) * | 2000-07-28 | 2002-01-30 | Masakazu Matuo | Continuous flow type heating apparatus |
| CN100402940C (en) * | 2006-02-21 | 2008-07-16 | 江存志 | Energy-storing microwave water heater |
-
1988
- 1988-06-03 CA CA 568642 patent/CA1311531C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1176370A2 (en) * | 2000-07-28 | 2002-01-30 | Masakazu Matuo | Continuous flow type heating apparatus |
| EP1176370A3 (en) * | 2000-07-28 | 2003-09-10 | Masakazu Matuo | Continuous flow type heating apparatus |
| CN100402940C (en) * | 2006-02-21 | 2008-07-16 | 江存志 | Energy-storing microwave water heater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |