US3661325A - Vacuum evaporation type water heater - Google Patents

Vacuum evaporation type water heater Download PDF

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Publication number
US3661325A
US3661325A US81728A US3661325DA US3661325A US 3661325 A US3661325 A US 3661325A US 81728 A US81728 A US 81728A US 3661325D A US3661325D A US 3661325DA US 3661325 A US3661325 A US 3661325A
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US
United States
Prior art keywords
valve
sensor
tank
temperature
switch
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 - Lifetime
Application number
US81728A
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English (en)
Inventor
Helmut Schmidt Auf Altenstadt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vaillant GmbH
Original Assignee
Joh Vaillant GmbH and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Joh Vaillant GmbH and Co filed Critical Joh Vaillant GmbH and Co
Application granted granted Critical
Publication of US3661325A publication Critical patent/US3661325A/en
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    • 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
    • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
    • F24H1/50—Water heaters for central heating incorporating heaters for domestic water incorporating domestic water tanks
    • 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
    • F24H1/0009—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters of the reduced pressure or vacuum steam type

Definitions

  • the service water boiler has a conduit for the space heating system extending through it and downstream from the boiler the conduit is exposed to the steam in the vacuum heating tank which also houses that boiler.
  • the space heating thermostat switch is in series with a switch operated by a sensor in the tank with the two being arranged so that the gas to the burner heating the tank is shut off when a given temperature is reached at said sensor.
  • a second sensor in the tank will, at a temperature lower than the given temperature, actuate a second switch also connected to shut off the gas to the burner provided that the thermostat switch is not calling for heat.
  • the invention relates to a vacuum evaporation type water heater comprising an evacuated partly water-filled heated tank receiving a service water heating boiler and an independent heat exchanger of a circulatory space heating system.
  • a vacuum evaporation type water heater comprising an evacuated partly water-filled heated tank receiving a service water heating boiler and an independent heat exchanger of a circulatory space heating system.
  • the steam temperature in the tank it is known for the steam temperature in the tank to be adjusted by a temperature or pressure sensitive controller to a value above the required service water temperature, with the aim of ensuring that the flow temperature in the circulatory heating system is high enough.
  • this kind of steam temperature control leads to overheating of the service water boiler.
  • the return pipeof the circulatory heating system is connected to a pipe coil in the boiler soas to cool the service water.
  • the disadvantage of this arrangement is that the service water is cooled only when the circulatory heating system is in operation; when such system ceases to operate, the service water is heated; excessively.
  • the sensor of the controller has a second sensor connected in parallel with it which sensor is adjustable to a value corresponding to the'required service water temperature and which, upon cessation of operation of the circulatory heating system, automatically takes over the control of the steam temperature. Consequently, when the circulatory heating system is cut out of operation, the steam temperature is automatically reduced to a value appropriate for the service water temperature.
  • the illustrated embodiment includes an evacuated receptacle or tank 1 having a heat-insulating covering 2.
  • Tank 1 contains a relatively small amount of water 3 and when heated by a heat source 4 the water turns into steam.
  • a service water boiler 6 Disposed in the steam chamber 5 of tank I are a service water boiler 6 and a heat exchanger 7.
  • Heat exchanger 7 is a part of a circulatory space heating system represented by a radiator 8 and a circulating pump 9.
  • Boiler 6 is connected to a cold water intake pipe 10 and to a draw (discharge) pipe 11.
  • a flow pipe 12 extends from heat exchanger 7 to the radiator 8.
  • a return pipe or conduit 13 extends back to the heat exchanger 7 and includes pump 9 and a pipe coil 14 in the boiler 6. Consequently, the water returning through line 13 is, when in pipe coil 14, in heat exchange relationship with the service water contained in boiler 6.
  • a sensor 15 Disposed in chamber 5 is a sensor 15 (responsive either to temperature or to pressure) which, when a preset steam temperature is exceeded, opens a switch 16.
  • a switch 19 which could be a room thermostat or some other master switch for controlling the circulatory heating is in series with switch 16.
  • Switch 16 is disposed in the circuit of a solenoid valve 17 to energize the solenoid and open the gas line when the switch 16 closes (provided thermostat switch 19 is closed). If the room then'nostat continues to call for heat but the temperature in chamber 5 reaches a preselected maximum (e. 105 C.) switch 16 opens to close the gas valve by braking t e electrical circuit to the solenoid.
  • a preselected maximum e. 105 C.
  • a second sensor 20 which operates at a lower steam temperature than that of sensor 15 (e.g. 90 C. At this temperature sensor 20 opens a switch 21 which is closed below the selected lower temperature. Switch 21 is in parallel with the series circuit of switch 16 and room thermostat 19.
  • the sensor 15 and switch 16 are responsible for controlling the steam temperature in chamber 5 to 105 C. Since the return water from the circulatory heating system is flowing through pipe coil 14, the service water in boiler 6 is cooled and does not overheat. So long as switches 16 and 19 are closed, the opening of switch 21 has no effect. However, when the circulatory heating system is cut out of operation either by the open switch 19, room thermostat, or because the complete system is running in summer conditions, sensor 20 and switch 21 take over the control of the steam temperature in the chamber 5 at a lower value, e. g. 90 C. Thereby, the absence of cooling of boiler 6 by the return water from the circulatory heating system does not cause the temperature of the water in the boiler to become excessive.
  • a single sensor can, of course, be used; the single sensor can, in known manner, be adjusted to operate switches at two different temperature (or pressure) levels, the lower level being the level used when the circulatory heating system is inoperative.
  • the steam temperature can be controlled by temperature-sensitive devices (thermostats) and by sensors responsive to steam pressure.
  • a heating system comprising an evacuated partially water-filled tank, a service water boiler in the tank, a space heating system return conduit extending through the boiler, a gas burner line, a solenoid valve in said line and having an operator for controlling the valve, and control means connected to the operator for opening and closing the valve
  • said control means including a master control, sensor means in said tank and responsive to the pressure/temperature conditions in the tank and primary sensor switch means, said control means opening the valve when said master control calls for heat and said sensor means detects that the pressure/temperature conditions are below a preselected amount and closing said valve when said preselected pressure/temperature conditions are exceeded, the improvement wherein said control means includes:
  • said sensor means comprises two separate sensors, each of which actuate a respective sensor switch.
US81728A 1969-10-29 1970-10-19 Vacuum evaporation type water heater Expired - Lifetime US3661325A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1954296A DE1954296C3 (de) 1969-10-29 1969-10-29 Nach dem Vakuumverdampfungspnnzip arbei tender Warmwasserbereiter

Publications (1)

Publication Number Publication Date
US3661325A true US3661325A (en) 1972-05-09

Family

ID=5749480

Family Applications (1)

Application Number Title Priority Date Filing Date
US81728A Expired - Lifetime US3661325A (en) 1969-10-29 1970-10-19 Vacuum evaporation type water heater

Country Status (9)

Country Link
US (1) US3661325A (fr)
AT (1) AT292969B (fr)
BE (1) BE756304A (fr)
CH (1) CH517920A (fr)
DE (1) DE1954296C3 (fr)
ES (1) ES383365A1 (fr)
FR (1) FR2062516A5 (fr)
GB (1) GB1280098A (fr)
NL (1) NL144728B (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3896992A (en) * 1974-07-18 1975-07-29 Anton Borovina Heat recovery system for space heating and for potable water heating
US3945433A (en) * 1971-10-06 1976-03-23 Stotz & Co. Vacuum vaporization apparatus for heating one or a number of separate liquids
US5758820A (en) * 1997-01-17 1998-06-02 Amtrol Inc. Heat recovery system
US20090283057A1 (en) * 2005-11-22 2009-11-19 Kyungdong Navien Co., Ltd. Hot-Water Supplying System of Boiler Equipped With Dual Pipe Heat Exchanger
US20100025486A1 (en) * 2008-07-29 2010-02-04 Sanger Jeremy J Liquid heat generator with integral heat exchanger
US20150300661A1 (en) * 2012-12-12 2015-10-22 Kyungdong Navien Co., Ltd. Hot water-centered combined hot water and heating boiler
JP2015183914A (ja) * 2014-03-24 2015-10-22 株式会社日本サーモエナー 真空式温水機
JP2015200455A (ja) * 2014-04-08 2015-11-12 株式会社日本サーモエナー 真空式温水機
JP2015206484A (ja) * 2014-04-17 2015-11-19 株式会社日本サーモエナー 真空式温水機
US20190154274A1 (en) * 2016-02-24 2019-05-23 "Energy Of Vacuum" Limited Liability Company Vacuum steam heating system
WO2020227216A1 (fr) * 2019-05-03 2020-11-12 Marshall Cox Préchauffeur d'eau chaude domestique à double fonction et dispositif de chauffage d'espace intégré

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8826885D0 (en) * 1988-11-17 1988-12-21 Imi Range Ltd Hot water generating & supply apparatus
GB9021248D0 (en) * 1990-09-29 1990-11-14 Imi Range Ltd Heating apparatus
GB2285118B (en) * 1993-11-11 1997-08-20 Blue Circle Heating Ltd Gas fired boiler arrangements
CN109654548B (zh) * 2019-02-01 2024-04-16 青岛海尔智能技术研发有限公司 燃气灶及用于燃气灶的控制方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2348610A (en) * 1940-12-24 1944-05-09 Clyde W Colby Heating system or the like
US2578340A (en) * 1948-05-06 1951-12-11 Miller Co Hot water heating system and control therefor
US3237608A (en) * 1962-10-31 1966-03-01 Brandl Willi Apparatus for heating at least two vessels by a single source of heat

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2348610A (en) * 1940-12-24 1944-05-09 Clyde W Colby Heating system or the like
US2578340A (en) * 1948-05-06 1951-12-11 Miller Co Hot water heating system and control therefor
US3237608A (en) * 1962-10-31 1966-03-01 Brandl Willi Apparatus for heating at least two vessels by a single source of heat

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3945433A (en) * 1971-10-06 1976-03-23 Stotz & Co. Vacuum vaporization apparatus for heating one or a number of separate liquids
US3896992A (en) * 1974-07-18 1975-07-29 Anton Borovina Heat recovery system for space heating and for potable water heating
US5758820A (en) * 1997-01-17 1998-06-02 Amtrol Inc. Heat recovery system
US20090283057A1 (en) * 2005-11-22 2009-11-19 Kyungdong Navien Co., Ltd. Hot-Water Supplying System of Boiler Equipped With Dual Pipe Heat Exchanger
US20100025486A1 (en) * 2008-07-29 2010-02-04 Sanger Jeremy J Liquid heat generator with integral heat exchanger
US8469283B2 (en) * 2008-07-29 2013-06-25 Ventech, Llc Liquid heat generator with integral heat exchanger
US20150300661A1 (en) * 2012-12-12 2015-10-22 Kyungdong Navien Co., Ltd. Hot water-centered combined hot water and heating boiler
US9945566B2 (en) * 2012-12-12 2018-04-17 Kyungdong Navien Co., Ltd. Hot water-centered combined hot water and heating boiler
JP2015183914A (ja) * 2014-03-24 2015-10-22 株式会社日本サーモエナー 真空式温水機
JP2015200455A (ja) * 2014-04-08 2015-11-12 株式会社日本サーモエナー 真空式温水機
JP2015206484A (ja) * 2014-04-17 2015-11-19 株式会社日本サーモエナー 真空式温水機
US20190154274A1 (en) * 2016-02-24 2019-05-23 "Energy Of Vacuum" Limited Liability Company Vacuum steam heating system
US11131465B2 (en) * 2016-02-24 2021-09-28 “Energy of Vacuum” Limited Liability Company Vacuum steam heating system
WO2020227216A1 (fr) * 2019-05-03 2020-11-12 Marshall Cox Préchauffeur d'eau chaude domestique à double fonction et dispositif de chauffage d'espace intégré
EP3963267A4 (fr) * 2019-05-03 2023-01-18 Radiator Labs, Inc. Préchauffeur d'eau chaude domestique à double fonction et dispositif de chauffage d'espace intégré

Also Published As

Publication number Publication date
BE756304A (fr) 1971-03-01
NL144728B (nl) 1975-01-15
CH517920A (de) 1972-01-15
GB1280098A (en) 1972-07-05
DE1954296A1 (de) 1971-05-06
FR2062516A5 (fr) 1971-06-25
ES383365A1 (es) 1973-01-16
DE1954296B2 (de) 1973-03-08
DE1954296C3 (de) 1973-09-27
NL7013313A (fr) 1971-05-04
AT292969B (de) 1971-09-27

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