FR2484729A1 - Single phase central heating pump motor control circuit - has thermistor switched capacitance reducing power after starting to provide low running speed - Google Patents
Single phase central heating pump motor control circuit - has thermistor switched capacitance reducing power after starting to provide low running speed Download PDFInfo
- Publication number
- FR2484729A1 FR2484729A1 FR8013470A FR8013470A FR2484729A1 FR 2484729 A1 FR2484729 A1 FR 2484729A1 FR 8013470 A FR8013470 A FR 8013470A FR 8013470 A FR8013470 A FR 8013470A FR 2484729 A1 FR2484729 A1 FR 2484729A1
- Authority
- FR
- France
- Prior art keywords
- motor
- thermistor
- central heating
- starting
- control circuit
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/04—Asynchronous induction motors for single phase current
- H02K17/08—Motors with auxiliary phase obtained by externally fed auxiliary windings, e.g. capacitor motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/42—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor
- H02P1/44—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor by phase-splitting with a capacitor
- H02P1/445—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor by phase-splitting with a capacitor by using additional capacitors switched at start up
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Motor And Converter Starters (AREA)
Abstract
Description
La présente invention concerne un perfectionnement aux moteurs électriques asynchrones monophasés à capacité permanente pour 1'entraînement des circulateurs de chauffage central. The present invention relates to an improvement to permanent capacity single-phase asynchronous electric motors for driving central heating circulators.
Il est intéressant de pouvoir régler la caractEristique hydraulique d'un circulateur de chauffage central entraîné par un moteur électrique asynchrone monophasé a capacité permanente, tout en conservant son couple de démarrage maximum. It is interesting to be able to adjust the hydraulic characteristic of a central heating circulator driven by a single-phase asynchronous electric motor with permanent capacity, while retaining its maximum starting torque.
I1 est reconnu que les moyens de règlage électrique sont plus avantageux que les moyens de reglage hydraulique qui entraînent une augmentation du bruit et une consomma- tion inutile d'énergie. It is recognized that the electrical adjustment means are more advantageous than the hydraulic adjustment means which lead to an increase in noise and an unnecessary consumption of energy.
On connaît déja un tel moteur électrique dans lequel l'impédance capacitive de la phase auxiliaire du moteur est constituée par deux condensateurs montés en parallèle dont l'un formant une impédance capacitive auxiliaire, a une capacité dont la valeur correspond à la vitesse lente désirée dudit moteur et dont l'autre est monté en série avec un interrupteur permettant sa mise hors circuit
La diminution de la valeur de la caFacité de la phase auxiliaire , par l'ouverture de l'interrupteur pre'cite', entraîne une augmentation de l'impe'dance capacitive et par conséquent une réduction de la vitesse du moteur. Such an electric motor is already known in which the capacitive impedance of the auxiliary phase of the motor is constituted by two capacitors mounted in parallel, one of which forming an auxiliary capacitive impedance, has a capacity whose value corresponds to the desired slow speed of said motor and the other of which is connected in series with a switch enabling it to be switched off
The decrease in the value of the capacitance of the auxiliary phase, by opening the aforementioned switch, results in an increase in the capacitive impedance and consequently a reduction in the speed of the motor.
On peut ainsi faire démarrer le moteur à sa vitesse normale, c'est-à-dire avec son couple de démarrage maximum puis, cette phase de démarrage étant terminée, le faire fonctionner en vitesse lente en ouvrant l'interrupteur.It is thus possible to start the engine at its normal speed, that is to say with its maximum starting torque, then, this start-up phase having been completed, run it at slow speed by opening the switch.
Cependant, le passage de la vitesse normale à la vitesse lente et inversement nécessite chaque fois une manoeuvre de cet interrupteur.However, the transition from normal speed to slow speed and vice versa each time requires operation of this switch.
La présente invention vise à remédier à cet inconvénient en rendant automatique le passage de la vitesse normale à la vitesse lente et inversement. The present invention aims to remedy this drawback by making automatic the transition from normal speed to slow speed and vice versa.
Selon l'invention, les moyens montés en série avec le condensateur pour sa mise. hors circuit en vue du fonctionnement du moteur à vitese lente après la phase de démarrage sont constitués par une thermistance sensible au courant de démarrage du moteur. According to the invention, the means mounted in series with the capacitor for its setting. off for operating the slow-speed motor after the start-up phase consists of a thermistor sensitive to the motor start-up current.
Pour permettre de neutraliser cette thermistance et dtiwposer, ainsi, au moteur, un fonctionnement à sa vitesse normale, on peut prévoir un interrupteur monté en parallèle avec ladite thermistance. To allow this thermistor to be neutralized and thus to operate the motor at normal speed, a switch can be provided mounted in parallel with said thermistor.
De toute façon, l'invention sera bien comprise à l'aide de la description qui suit en référence au dessin schématique annexé dont l'tunique figure représente, à titre d'exemple non limitatif, une forme d'exécution de ces moyens. In any case, the invention will be clearly understood with the aid of the description which follows with reference to the appended schematic drawing, the figure of which represents, by way of nonlimiting example, an embodiment of these means.
tans l'exemple illustre sur le dessin1 on a représent l'inductance 2 de la phase principale et l'impédance inductive 3 montée en série avec une impédance capacitive 4 de la phase auxiliaire du moteur électrique d'entraînement du circulateur qui est du type asynchrone monophasé à capacite permanente. In the example illustrated in the drawing, 1 is shown the inductance 2 of the main phase and the inductive impedance 3 connected in series with a capacitive impedance 4 of the auxiliary phase of the electric motor driving the circulator which is of the asynchronous type. single-phase with permanent capacity.
Cette impédance capacitive est du type constitué de deux condensateurs 4a et 4b montés en parallèle l'un avec l'autre. This capacitive impedance is of the type consisting of two capacitors 4a and 4b mounted in parallel with one another.
Naturellement, d'une part, les capacités respectives des condensateurs 4a et 4b sont telles que leur somme est Qgale à la capacité qui doit être monté4 en série avec l'impédance inductive 3 pour que le moteur électrique tourne à sa vitesse normale et, d'autre part, la capacité du condensateur 4a correspond a la vitesse lente du moteur. Naturally, on the one hand, the respective capacities of the capacitors 4a and 4b are such that their sum is Q equal to the capacity which must be connected 4 in series with the inductive impedance 3 for the electric motor to run at its normal speed and, d On the other hand, the capacity of the capacitor 4a corresponds to the slow speed of the motor.
Comme le montre le dessin, une thermistance 5, sensible au courant de démarrage du moteur, est montee en série avec le condensateur 4b. As shown in the drawing, a thermistor 5, sensitive to the starting current of the motor, is mounted in series with the capacitor 4b.
Le fonctionnement de ce moteur est donc le suivant
Lors de sa mise en route, la thermistance 5 se comportant comme un interrupteur fermé, les deux condensateurs 4a et 4b sont en service et le moteur fonctionne en régime normal, ctest-à-dire avec son couple de démarrage maximum. Après échauffement par le courant qui la traverse, la résistance de la thermistance 5 croit considérablement, de telle sorte qu'elle se comporte comme un interrupteur ouvert mettant hors circuit le condensateur 4b. La capacite de la phase auxiliaire du moteur se trouve donc réduite à la capacité de ce condensateur i , et son impédance capacitive est donc augmentée de sorte que le moteur fonctionne donc à son régime "vitesse lente".The operation of this engine is therefore as follows
When it is started up, the thermistor 5 behaves like a closed switch, the two capacitors 4a and 4b are in service and the motor operates in normal mode, that is to say with its maximum starting torque. After heating by the current flowing through it, the resistance of the thermistor 5 increases considerably, so that it behaves like an open switch deactivating the capacitor 4b. The capacity of the auxiliary phase of the motor is therefore reduced to the capacity of this capacitor i, and its capacitive impedance is therefore increased so that the motor therefore operates at its "slow speed" speed.
Comme le montre le dessin, un interrupteur 6 est monté en parallèle avec la thermistance 5 et permet donc de courtcircuiter la thermistance 5, ce qui a pour effet d'interdire le fonctionnement à vitesse lente du moteur. As shown in the drawing, a switch 6 is mounted in parallel with the thermistor 5 and therefore makes it possible to short-circuit the thermistor 5, which has the effect of prohibiting operation at slow speed of the motor.
Comme il va de soi et comme il ressort de ce qui précède, 1'invention ne se limite pas a la seule forme d'exécution de ces moyens qui a été décrite ci-dessus à titre d'exemple non limitatif; elle en embrasse, au contraire, toutes les variantes de réalisation. As is obvious and as is clear from the above, the invention is not limited to the only embodiment of these means which has been described above by way of nonlimiting example; on the contrary, it embraces all of its variant embodiments.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8013470A FR2484729A1 (en) | 1980-06-12 | 1980-06-12 | Single phase central heating pump motor control circuit - has thermistor switched capacitance reducing power after starting to provide low running speed |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8013470A FR2484729A1 (en) | 1980-06-12 | 1980-06-12 | Single phase central heating pump motor control circuit - has thermistor switched capacitance reducing power after starting to provide low running speed |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2484729A1 true FR2484729A1 (en) | 1981-12-18 |
Family
ID=9243208
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8013470A Pending FR2484729A1 (en) | 1980-06-12 | 1980-06-12 | Single phase central heating pump motor control circuit - has thermistor switched capacitance reducing power after starting to provide low running speed |
Country Status (1)
Country | Link |
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FR (1) | FR2484729A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004051837A1 (en) * | 2002-12-02 | 2004-06-17 | Roland Weigel | Device and method for reducing the current consumption during the starting process of a single-phase a.c. asynchronous motor |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE536429A (en) * | ||||
DE621467C (en) * | 1933-06-04 | 1935-11-07 | Siemens Schuckertwerke Akt Ges | Device for controlling single-phase induction motors with auxiliary phase winding and starting capacitor |
FR1386736A (en) * | 1963-02-25 | 1965-01-22 | Danfoss As | Starter for single-phase motor |
US3303402A (en) * | 1964-01-09 | 1967-02-07 | Phillips Petroleum Co | Single phase induction motor |
FR1566230A (en) * | 1968-01-08 | 1969-05-09 | ||
FR2136285A5 (en) * | 1971-04-09 | 1972-12-22 | Texas Instruments Inc | |
FR2426355A1 (en) * | 1978-05-16 | 1979-12-14 | Danfoss As | STARTING DEVICE FOR SINGLE-PHASE ASYNCHRONOUS MOTORS |
FR2441291A1 (en) * | 1978-11-02 | 1980-06-06 | Danfoss As | STARTING CIRCUIT FOR A COMPRESSOR EQUIPMENT |
-
1980
- 1980-06-12 FR FR8013470A patent/FR2484729A1/en active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE536429A (en) * | ||||
DE621467C (en) * | 1933-06-04 | 1935-11-07 | Siemens Schuckertwerke Akt Ges | Device for controlling single-phase induction motors with auxiliary phase winding and starting capacitor |
FR1386736A (en) * | 1963-02-25 | 1965-01-22 | Danfoss As | Starter for single-phase motor |
US3303402A (en) * | 1964-01-09 | 1967-02-07 | Phillips Petroleum Co | Single phase induction motor |
FR1566230A (en) * | 1968-01-08 | 1969-05-09 | ||
FR2136285A5 (en) * | 1971-04-09 | 1972-12-22 | Texas Instruments Inc | |
FR2426355A1 (en) * | 1978-05-16 | 1979-12-14 | Danfoss As | STARTING DEVICE FOR SINGLE-PHASE ASYNCHRONOUS MOTORS |
FR2441291A1 (en) * | 1978-11-02 | 1980-06-06 | Danfoss As | STARTING CIRCUIT FOR A COMPRESSOR EQUIPMENT |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004051837A1 (en) * | 2002-12-02 | 2004-06-17 | Roland Weigel | Device and method for reducing the current consumption during the starting process of a single-phase a.c. asynchronous motor |
CH695976A5 (en) * | 2002-12-02 | 2006-10-31 | Roland Weigel | Apparatus and method for reducing the power consumption during start-up of a single-phase AC induction motor. |
US7498763B2 (en) | 2002-12-02 | 2009-03-03 | Roland Weigel | Apparatus and method for reducing the current drawn during starting of a single-phase AC asynchronous motor |
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