US 4,542,849 AGranted

Method and apparatus for regulating a heating installation in premises including a plurality of heat generators

AssigneeElectricite de France

InventorsJacky Pichot, Jacques Oddou

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Abstract

The present invention relates to a method and to apparatus for regulating a heating installation in a premises comprising a plurality of heating generators. The apparatus comprises temperature probes (10, 20, 140) which are sensitive to the outside temperature, to the inside temperature, and to the departure temperature of the heating fluid leaving the heating generators. The apparatus further includes means (50, 60, 70, 80 and 100) for determining a reference temperature on the basis of a set temperature (Tc) as indicated by a setting unit (30). A proportional-integral regulator (120), sensitive to the difference between the reference temperature and the departure temperature of the fluid, generates a signal which is applied to threshold detectors which detect the passage of said signal through successive predetermined thresholds, thereby generating successive signals for bringing into service the corresponding heating generator.

Claims11

Dependent claims

A method of regulating a heating installation in premises including a plurality of heating generators, wherein the method comprises the steps of:

(i) permanently generating a first signal representative of a base temperature proportional to the difference existing between a set temperature and the instantaneous outside temperature;
(ii) permanently generating a second signal representative of a correction applied to the base temperature, and proportional to the difference between the set temperature and the instantaneous inside temperature of the premises;
(iii) periodically generating a third signal representative of an auxiliary correction proportional to the integration over a predetermined period of time of the differences existing between the set temperature and the inside temperature;
p1 (iv) correcting the factor of proportionality between the base temperature and the difference existing between the set temperature and the outside temperature on the basis of the third signal at the end of each predetermined period;
(v) permanently generating a fourth signal representative of a reference temperature corresponding to summing the first three signals;
(vi) determining a fifth signal in a proportional-integral type regulator sensitive to the difference existing between the reference temperature and the temperature of the heated fluid as it leaves the heat generators;
and
(vii) detecting the passage of the fifth signal through successive predetermined thresholds corresponding to respective commands for putting the said generators into service.

5 more elements

Apparatus for regulating a heating installation in premises including a plurality of heating generators and temperature probes respectively sensitive to the instantaneous outside temperature, to the instantaneous inside temperature, and to the departure temperature of the fluid as heated by the heating generators, the installation further including a unit for defining a set temperature, wherein the apparatus comprises:

servo control means suitable for generating a first signal representative of a base temperature proportional to the instantaneous difference between a set temperature and the outside temperature;
main correction means suitable for generating a second signal representative of a correction to be applied to the base temperature and proportional to the instantaneous difference between the set temperature and the inside temperature;
auxiliary correction means suitable for periodically generating a third signal representative of an auxiliary correction proportional to the integration over a predetermined period of the difference between the set temperature and the inside temperature;
self-adaptation means sensitive to the third signal and suitable, at the end of each predetermined period, for correcting the factor of proportionality between the base temperature and the difference between the set temperature and the outside temperature;
reference means suitable for generating a fourth signal representative of a reference temperature corresponding to summing the first three signals;
a proportional-integral regulator sensitive to the difference between the reference temperature and the departure temperature of the fluid heated by the heating generators and generating a fifth signal;
and
threshold detectors suitable for detecting the passage of the fifth signal through successive predetermined thresholds corresponding to controls for bringing respective ones of the same heating generators into service.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/687,732Filed 31 Dec 1984
Priority: FR 84 002149 Jan 1984
Granted: 24 Sep 1985
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

F24D 12/02
Other central heating systems: having more than one heat source
G05D 23/1931
Sensing the temperaure in different places in thermal relationship with one or more spaces: to control the temperature of one space
G05D 23/20
Characterised by the use of electric means: with sensing elements having variation of electric or magnetic properties with change of temperature
F24D 2200/043
Gas or oil fired boiler: more than one gas or oil fired boiler