WO1997017575A1 - Systeme de chauffage par circulation de liquide et pompe associee - Google Patents

Systeme de chauffage par circulation de liquide et pompe associee Download PDF

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Publication number
WO1997017575A1
WO1997017575A1 PCT/FI1995/000613 FI9500613W WO9717575A1 WO 1997017575 A1 WO1997017575 A1 WO 1997017575A1 FI 9500613 W FI9500613 W FI 9500613W WO 9717575 A1 WO9717575 A1 WO 9717575A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump
circulation
water
pumps
heating
Prior art date
Application number
PCT/FI1995/000613
Other languages
English (en)
Inventor
Matti Ilmari Kangas
Original Assignee
Matti Ilmari Kangas
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
Priority to FI944370A priority Critical patent/FI96796C/fi
Priority claimed from FI944370A external-priority patent/FI96796C/fi
Application filed by Matti Ilmari Kangas filed Critical Matti Ilmari Kangas
Priority to PCT/FI1995/000613 priority patent/WO1997017575A1/fr
Publication of WO1997017575A1 publication Critical patent/WO1997017575A1/fr

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
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F24D19/1012—Arrangement or mounting of control or safety devices for water heating systems for central heating by regulating the speed of a pump
    • 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]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the invention relates to a liquid-circulation heating system and a pump.
  • the heating system and the pump according to the invention are used in connection with a normal water-circulation central heating system or, for example, a hot-oil system comprising a boiler as a source of heat, flow and return pipes, a pump, actuators provided with thermostatic valves, radiators or a floor-heating network, and a check valve.
  • the oldest manner of regulating the water circulation of a water central heating network is a system that is based on the temperature difference of water and that utilizes no circulation pumps.
  • modern buildings are designed in such a way that gravity-based circulation of the radiator network is not possible, but the heating systems utilize circulation pumps.
  • the use of a circulation pump naturally reduces the size of the piping and the radiators, and the pipes are easier to install.
  • the most common system for regulating the water temperature used in the circulation of the radiator network has been a system with a three-way valve.
  • a three-way valve is used to control the water circulating in the radiator network and the hot water coming from the boiler.
  • Such a system normally comprises a circulation pump, but it may also be provided with two separate pumps for the circulation of water and for the boiler.
  • the control of the three-way valve and the impulses for its regulation can in principle be implemented in several ways.
  • One of the most complete implementations is naturally to measure the temperature of the water flowing to the radiators in the places of consumption, as well as the temperature of the water leaving the radiators, the temperature of the room and the outside temperature, and by means of the aforementioned temperatures to determine and adjust the position required in each case for the three-way valve. Taking into account the matters aiming at saving energy, lengthening the operating life of the boiler and preventing corrosion easily leads to a rather complicated control system which increases the costs of the heating system.
  • control systems that are used for the regulation of the radiator network are often rather costly and are not very well applicable to smaller places, such as the heating systems of detached or terraced houses.
  • the control systems that are presently used do not react very well in heating systems where each radiator is adjusted separately by means of thermostatic valves.
  • a system which takes into account the outside temperature is insensitive for example in cases where one or several rooms are temporarily adjusted to a temperature that is considerably lower than the normal room temperature.
  • the liquid-circulation heating system and the pump according to the invention provide sufficient control characteristics which take fully into account the control of the thermostats that are specific to each radiator.
  • the invention is based on the fact that the feed pump and the circulation pump of the radiator network are different, whereupon a pressure difference caused by the thermostatic valves controls the quantity of flow passing through the pumps, and sufficient control is thus obtained for the heating network.
  • the liquid-circulation heating system and the pump according to the invention are characterized by what is disclosed in the characterizing portion of claim 1.
  • the invention provides significant advantages over the conventional systems.
  • the liquid-circulation heating system and the pump according to the invention can be applied to a conventional hot-water radiator heating system, a hot-oil heating system or to other corresponding systems.
  • the actual heating may be provided by means of a radiator or floor network, or air heating.
  • the system according to the invention requires no control valves for the circulating water or for the feed water coming from the boiler.
  • Thermostatic valves that are specific for each room or radiator control the heating equipment. Since the adjustment is performed on the basis of a pressure difference in the network, it always occurs in real time, and a possible delay caused by a change in the outside temperature does not have to be taken into account in the temperature of the radiator network.
  • the pump according to the invention can be implemented in such a way that the feed pump and the circulation pump of the radiator network are connected to the same electric motor on the same axis, and only the delivery heights and the flow curves of the pumps differ.
  • the system according to the invention also takes into account the requirements created by the corrosion of the boiler, and when the system is being designed, it is possible to determine the temperature of the boiler return water under all circumstances.
  • FIG. 1 shows the pipe circuit according to the invention.
  • FIG. 2 shows the pressure/flow curves of the feed water and circulation pumps.
  • a boiler is denoted with reference numeral 1
  • a feed pipe of the radiator network arriving from the boiler with reference numeral 2 and a return pipe with numeral 3.
  • a feed pump is denoted with reference numeral 4, and a circulation pump with numeral 5.
  • Thermostatic valves are denoted with reference numeral 6, and actuators, such as radiators or the like, with reference numeral 7.
  • a circulation pipe situated between the feed pipe and the return pipe is denoted with reference numeral 8, and a check valve located in the return pipe of the boiler with reference numeral 9.
  • the feed pump 4 pumps hot water from the boiler 1, and the circulation pump 5 circulates the cool return water to the radiator network 7.
  • the pumps 4 and 5 operate in the heating system of the invention in the same way as a three-way valve.
  • the check valve 9 provided in the return pipe 3 prevents flow in the wrong direction in the boiler and the pipes.
  • the thermostatic valves 6 are used to control the water flow to the radiator network 7 according to the needs of an individual house and a radiator or a room, whereupon the pressure difference in the radiator network and simultaneously in each pump 4 and 5 changes.
  • the pressure difference increases when the need for heating decreases and the thermostatic valves are closed.
  • the flow of the pumps 4 and 5 changes when the pressure difference alters.
  • the pumps 4 and 5 are designed in such a way that the pump 4 has a high yield but a low delivery height.
  • the pump 5 in turn has a low yield but a great delivery height.
  • the pressure/flow curves of the pumps are shown in Figure 2, wherein curve 1 is the operating characteristic of the pump 4, and curve 2 is the operating characteristic of the pump 5.
  • the pressure difference p is shown in the horizontal plane and the quantity of flow q in the vertical plane.
  • the pumps to be used are manufactured on the same axis and to be driven by the same motor.
  • the thermostatic valves create a slight pressure difference so that the pump 4 pumps a great deal of hot water into the network from the boiler 1.
  • the flow of the pump 5 is considerably smaller, wherefore hot water flows freely to the radiators.
  • the thermostatic valves 6 begin to close, the flow of both pumps 4 and 5 decreases, but the flow of the pump 4 decreases considerably faster wherefore the temperature of the water flowing to the radiators drops.
  • the pressure difference becomes great enough, the flow through the boiler 1 ends completely and the water flowing to the radiators 7 is no longer heated.
  • the temperature of the water flowing to the radiator network is regulated in the arrangement of the invention completely according to the temperature required, without any kinds of control valves.
  • the liquid-circulation heating system and the pump according to the invention can naturally also be implemented in some other manner than the one disclosed in the embodiment according to the present application.
  • the location of the pump 4 can be changed in such a way that the pump is placed in the return pipe 3, whereupon the temperature at which the pump operates drops substantially.
  • Fixed orifice plates, manually controlled valves or the like can also be used to affect the pipe resistances and the flow conditions in different parts of the network.
  • the manually controlled valves of the radiators or the like can be used for the basic adjustment of the heating apparatuses.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)

Abstract

L'invention se rapporte à un système de chauffage par circulation de liquide et à une pompe qui sont tels que l'alimentation en liquide et la circulation dudit liquide sont régulées par une différence de pression créée au moyen de robinets thermostatiques (6). Cette différence de pression commande directement une pompe de circulation (5) et une pompe d'alimentation (4) qui possèdent des caractéristiques de fonctionnement différentes. Ces pompes peuvent faire partie d'une même construction de manière à être disposées sur un même axe ou de manière à ce qu'elles possèdent une roue de rotor double face.
PCT/FI1995/000613 1994-09-21 1995-11-10 Systeme de chauffage par circulation de liquide et pompe associee WO1997017575A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI944370A FI96796C (fi) 1994-09-21 1994-09-21 Nestekiertoinen lämmitysjärjestelmä ja pumppu
PCT/FI1995/000613 WO1997017575A1 (fr) 1994-09-21 1995-11-10 Systeme de chauffage par circulation de liquide et pompe associee

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI944370A FI96796C (fi) 1994-09-21 1994-09-21 Nestekiertoinen lämmitysjärjestelmä ja pumppu
PCT/FI1995/000613 WO1997017575A1 (fr) 1994-09-21 1995-11-10 Systeme de chauffage par circulation de liquide et pompe associee

Publications (1)

Publication Number Publication Date
WO1997017575A1 true WO1997017575A1 (fr) 1997-05-15

Family

ID=26159802

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1995/000613 WO1997017575A1 (fr) 1994-09-21 1995-11-10 Systeme de chauffage par circulation de liquide et pompe associee

Country Status (1)

Country Link
WO (1) WO1997017575A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2226575A3 (fr) * 2009-03-06 2011-08-10 Viessmann Werke GmbH & Co. KG Procédé d'analyse d'un réseau de tuyauterie d'une installation de chauffage
EP3438558A1 (fr) * 2017-08-03 2019-02-06 Grundfos Holding A/S Procédé de fonctionnement d'un dispositif mélangeur et ledit dispositif mélangeur

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH536465A (de) * 1971-04-05 1973-04-30 Klein Schanzlin & Becker Ag Warmwasser-Sammelheizungsanlage
DE3149401C2 (de) * 1981-12-10 1984-10-11 Fa. Rud. Otto Meyer, 2000 Hamburg Heizungsanlage

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH536465A (de) * 1971-04-05 1973-04-30 Klein Schanzlin & Becker Ag Warmwasser-Sammelheizungsanlage
DE3149401C2 (de) * 1981-12-10 1984-10-11 Fa. Rud. Otto Meyer, 2000 Hamburg Heizungsanlage

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2226575A3 (fr) * 2009-03-06 2011-08-10 Viessmann Werke GmbH & Co. KG Procédé d'analyse d'un réseau de tuyauterie d'une installation de chauffage
EP3438558A1 (fr) * 2017-08-03 2019-02-06 Grundfos Holding A/S Procédé de fonctionnement d'un dispositif mélangeur et ledit dispositif mélangeur
WO2019025527A1 (fr) * 2017-08-03 2019-02-07 Grundfos Holding A/S Procédé pour faire fonctionner un dispositif de mélange ainsi que dispositif de mélange
CN110998195A (zh) * 2017-08-03 2020-04-10 格兰富控股联合股份公司 用于运行混合装置的方法以及混合装置

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