GB1240346A - Improvements in or relating to gas-fired circulating water heaters - Google Patents

Improvements in or relating to gas-fired circulating water heaters

Info

Publication number
GB1240346A
GB1240346A GB40329/68A GB4032968A GB1240346A GB 1240346 A GB1240346 A GB 1240346A GB 40329/68 A GB40329/68 A GB 40329/68A GB 4032968 A GB4032968 A GB 4032968A GB 1240346 A GB1240346 A GB 1240346A
Authority
GB
United Kingdom
Prior art keywords
valve
thermistor
gas
opened
heating system
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
Application number
GB40329/68A
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.)
Junkers and Co GmbH
Original Assignee
Junkers and Co GmbH
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 Junkers and Co GmbH filed Critical Junkers and Co GmbH
Publication of GB1240346A publication Critical patent/GB1240346A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/08—Regulating fuel supply conjointly with another medium, e.g. boiler water
    • F23N1/082—Regulating fuel supply conjointly with another medium, e.g. boiler water using electronic means
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1906—Control of temperature characterised by the use of electric means using an analogue comparing device
    • G05D23/1909—Control of temperature characterised by the use of electric means using an analogue comparing device whose output amplitude can only take two discrete values
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D10/00—District heating systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/17—District heating

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Combustion (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)

Abstract

1,240,346. Automatic temperature control of gas-fired systems. JUNKERS & CO. G.m.b.H. 23 Aug., 1968 [23 Aug., 1967], No. 40329/68. Heading F4A. [Also in Division G3] A gas or oil-fired water heater for a heating system having a two-speed circulating pump selectively supplying through a three-way valve a central heating system and/or domestic water has a first thermistor R1 in the region of a domestic water storage heater 20, a second thermistor R2 in the region of a heat exchanger 11, and a third thermistor R3 in the region of the central heating system 16, each thermistor being connected in a separate bridge circuit controlling a Schmitt trigger circuit which operates switching means, e.g. relays to control the system. A pilot burner 29 heats a thermo-couple 36 energizing a solenoid 34 so that amanuallyoperated spring-loaded valve is retained in its opened position except on failure of a gas supply, or when a safety device, i.e. thermistor R2 controlling contact b is above a determined temperature. When the circulating pump is operated at. high speed a differential pressure valve 40 operates a main gas valve 38, and when a domestic water tap 46 is opened a pressure switch 48 operates valve 50, allowing additional gas to flow to burner 27. When tap 46 is opened the circulating pump is driven at high speed through a circuit, not shown, causing a gas valve 38 to be opened by differential pressure valve 40, whereby heated water is circulated through storage vessel 20, the temperature of which is regulated by thermistor R1. At the determined temperature the circulating pump and valve 38 are rendered inoperative. If central heating is required, a switch (167, Fig. 6, not shown) is closed, the three-way valve being moved to the appropriate position and pump 26 runs at a high speed hence valve 38 is opened. At a determined temperature measured by thermistor R3, burner 27 is rendered inoperative and the pump speed is reduced to a lower value. Premature switching off of the central heating system by hot water from the vessel 20 is prevented by components (115, 121, 122, Fig. 4, not shown). The arrangement is additionally controlled by an on/off space thermostat (169, Fig. 6, not shown). Circuits are described in a Specification for controlling the various operations.
GB40329/68A 1967-08-23 1968-08-23 Improvements in or relating to gas-fired circulating water heaters Expired GB1240346A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEJ0034427 1967-08-23

Publications (1)

Publication Number Publication Date
GB1240346A true GB1240346A (en) 1971-07-21

Family

ID=7205081

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40329/68A Expired GB1240346A (en) 1967-08-23 1968-08-23 Improvements in or relating to gas-fired circulating water heaters

Country Status (5)

Country Link
AT (1) AT273437B (en)
BE (1) BE719906A (en)
DE (1) DE1679365A1 (en)
GB (1) GB1240346A (en)
NL (1) NL6811975A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0816765A3 (en) * 1996-06-29 1998-12-16 Robert Bosch Gmbh Heating device with a reversible valve
WO2004081362A2 (en) * 2003-03-11 2004-09-23 Microgen Energy Limited A splitter valve

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3409213A1 (en) * 1983-03-19 1984-09-20 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Fuel-heated heat source
DE19533729A1 (en) * 1995-09-12 1997-03-13 Bosch Gmbh Robert Device for heating heating water and preparing domestic water
CN113654124A (en) * 2021-08-19 2021-11-16 苏州锋雅机电实业有限公司 Separated two-stage transmission and distribution system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0816765A3 (en) * 1996-06-29 1998-12-16 Robert Bosch Gmbh Heating device with a reversible valve
WO2004081362A2 (en) * 2003-03-11 2004-09-23 Microgen Energy Limited A splitter valve
WO2004081362A3 (en) * 2003-03-11 2005-01-20 Microgen Energy Ltd A splitter valve
JP2006525478A (en) * 2003-03-11 2006-11-09 マイクロゲン エナジー リミテッド Splitter valve

Also Published As

Publication number Publication date
AT273437B (en) 1969-08-11
DE1679365A1 (en) 1971-04-08
NL6811975A (en) 1969-02-25
BE719906A (en) 1969-02-03

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees