DE2004474A1 - Control unit for heating oil burner - Google Patents

Description

APPAREILLAGE THERM08FLEX, Ets. J «M. DARD Ik rue Claude-Genin, Grenoble (isere) / France «-

Control unit for heating oil burner

The present invention relates to a control unit for fuel oil burners, which contains the various electrical control ", and securing means for the operation of a fuel oil burner" Such systems typically include a safety relay, which in case of overload the circuit of the different burner units, in particular of the motor _s of the oil injection pump and Fan drives, switches off »With a push-button switch, the safety relay can switch to such a

ll be turned back on, ''

0.0 * 142/16 *

Such systems also include another so-called ^M ignition relay "which, together with a photocell, monitors the flame and switches off the ignition device and any auxiliary devices of the motor as soon as the flame is ignited. In addition, further relays can be provided, for example for controlling the motor or the oil supply to the burner Finally, other are out! convenes control devices such as aqua deeds, thermostats or similar _e provided and connected. through them, the torch will auto "matically stopped when the desired temperature is reached or exceeded"

For the reasons mentioned, the control devices must be connected to a number of units located outside such as the engine, fan and ignition device on the one hand and the facilities such as flame detector, aquastat or thermostat or possibly »· Licherweise a signaling device on the other hand. In addition, the connection to the power grid must be established so that a large number of electrical units and a large number of electrical lines are required are.

The invention avoids the shortcomings and an immediate and easy connection of a single unit guaranteed. This is achieved according to the invention in that a housing is provided which the various electrical devices required for automatic operation of the burner, such as relays, Trane formats, resistances uaiw, aufr ^ '. ^ Ait and which on its front face. eel like sockets, Has plug or the like, to 'e the aum Nota

BATH ORIGINAL

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to the thermostat or Aquastat and any signal - 'equipment leading power lines by means of corresponding plug connected are, while being provided on the back of further connecting elements, such as pins, tabs, connectors, sleeves or the like _"8, the connection of the one hand to the burner motor and on the other hand to the ignition device Allow leading lines, with the various electrical devices such as relays, transformers, resistors, etc. in the interior of the housing

brought and with the on the housing front and the '

Housing rear side provided connection means connected are ο

Preferably, the housing is made of essentially one Rectangular shell, cap or the like. Formed, the bottom of which forms the front side of the housing, while the back consists of a plate, which the various Terminals, pins or the like and that one another plate is provided inside the housing, which carries the electrical equipment · The side walls of the housing carry on their inside

Contact strips that correspond to the I

aeite provided connection means are connected and that the plate carrying the electrical equipment with the spring connected to the electrical equipment « contacts is provided, some of which are resiliently applied to the contact strips inside the housing and on the other hand Part into the connection means provided on the rear of the housing pass over "

009842/1064

The inventive concept is in one embodiment explained in the following description, which refers to the accompanying drawings Show *

Figs. 1 and 2, a perspective view of the

Control unit seen once from the front and once from the rear;

3 shows a section through the unit;

FIG. H is a perspective view of FIG

Interior of the housing without the electrical units;

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Pig 5 a partial view in section}

Pig. 6 is a view of the attached to the burner Unit and

Pig «7 a schematic representation of an oil heater» system with the control unit according to the invention »

<' The control unit has a rectangular housing 1, the

', Front wall 2 of the control unit shown corresponds to « Λ

The rear wall 3 consists of a plate to which a further plate k is arranged parallel, which serves as a support for the electrical components

■ Cases the usual control devices, which are present in the <- \ like devices, ie «a safety relay, an ignition relay with a flame detector

j ". ■ ■ ■. ■■" ■ "-.

"j is connected and other control relay for motor,

Blower or the like »":

These devices, which are shown in Figure 3, are labeled A, B and C, their arrangement and attachment . on the plate k is arbitrary

This plate k , like the plate 3 and the housing 1, is made of an insulating material.

The inner plate k lies on the shoulders 5 in the corners of the housing 1 «The plates 3 and 4 are held apart by spacer tubes 6 and are fastened with the screws 7 that lead through the spacer tubes 6.

009842/1064

According to the invention are on the front side 2 of the housing the connection contacts, such as pins, terminals or similar connecting elements are provided that connect the plug to the Take up the cable ends of the mains supply and the supply lines to the thermostat, Aquastat or signaling device.

In the embodiment shown, a socket 8 is let into the front 2, in which three

■ k contact pins 9a, b, c are located for plug D one

three-wire network cable B

The contact 9a is intended for the phase, while the contacts 9b, 9c serve as ground or protective conductors the first is to take up the plug F on the connection cable G of the thermostat or aquastat H, while the second takes up the plug I of the cable J, which establishes the connection to the signaling device K located outside »These sockets are with the contact pins 11a, 11b and W 12a, 12b, which are fastened with nuts in the housing «

A contact pin of the first socket, for example 11a, is directly connected to the mains connection, ie to the contact pin 9a, that is to say to the phase. The connection is made by a conductive sheet metal strip 13 inside the housing. In addition, the pin 12b is connected to the pin 9c of the mains connection via a sheet metal strip lh. The pin 11a and 12a are provided with sheet metal tongues 15 and 16 which are bent in such a way that they lie tightly against the exact 1 ·

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Furthermore: the pin 9c is also provided with such a contact tongue 17, which ends at the three contact surfaces ITa, 17b, 17 ″, _{or the like}

The part 17a is bent like the tongues 15, 16.

The parts. 17b and 17c, on the other hand, protrude slightly and lead through the insulating floors 3, k (FIG. 3) .These tongues 17b and 17c, which extend through two openings 18 in the floor 3, form contact connections

for the spring clips L (Fig. 6) * The tongues 15, i6 g

and 17a connect the housing unit 1 to the electrical devices of the base plate h with the aid of contact springs 19 which are attached to the plate h when the base plate h is inserted into the housing 1 "

The other connections of the plate k are connected to the contact springs 20a, 20b, 20c which, like the springs 17b, 17c, are located in openings 18 of the plate 3.

All these tongues take on spring clips L, which control the «- · unit with the supply lines N to the engine M and ignition * direction T connect »The arrangement of the various

Lines can be seen in Fig. 7, where the part P %

the burner and part R the boiler «In addition, on the back of the control unit Contact pins or clips can be provided with which a connection to the flame detector is established, which usually consists of a photocell, a resistor etc. consists «

In the embodiment shown, the photocell is S attached directly to the housing of the control unit, you can however, it can also be arranged independently of the control unit,

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however, as already said, additional Contact terminals must be present «

On the front of the housing there is also the push-button switch 21 with which the fuse can be switched on again. It is also worth mentioning that the pin 9b carries a contact tongue 22 which is connected to the screw 25 with which the unit is fastened to the burner. The pin 9b is connected to the protective conductor. In this way, the metal support 24 of the unit is grounded at the same time. Conventional connection work is thus avoided. It is sufficient if the unit is screwed to the support 2k and the plugs of the various lines are then inserted into the corresponding sockets. This work can all be done very easily and very quickly »The unit according to the invention therefore considerably simplifies the work of the installer»

Of course, the invention is not limited to the embodiment described. All Connection pins, contacts, tongues or terminals can be connected to other connecting devices, i.e. by screw fasteners, can be replaced · In addition, their arrangement and number can be varied «Furthermore, in the unit further electrical equipment, e.g. the ignition transformer, can be accommodated so that only the ignition electrodes lie outside,

In this way, an electrical control and protection unit of the simplest design was actually created. In addition, numerous other embodiments are of course possible «

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Claims (1)

Patent claims s f 1 β! Control unit for heating oil burners, marked through one of the various electrical devices required for automatic operation of the burner (A, B, c) receiving housing (1), which at his Front (2) has connection means such as sockets, plugs or the like (8 - 12) to which the network ^ J to the thermostat or Aquas * tat and to any signaling devices leading power lines (E ₉ G, j) can be connected by means of appropriate plugs (d, F, X), while on the back of the housing (3) other connecting elements such as pins, tongues, plugs, sockets or dergl «(17» 18 »20a-c) are provided, which allow the connection of the lines leading on the one hand to the burner motor (m) and on the other hand to the ignition device (τ), the various electrical. Devices (A, B, c) such as relays, transformers, resistors, etc. are housed in the interior of the housing (1) and with the devices on the front of the housing (2) and the housing j rear side (3) provided connection means connected ' 2, control unit for fuel oil burner according to claim .1, characterized in that the housing (ί) is formed from a ± m substantially rectangular shell, cap or the like, the bottom of which forms the housing front side (2), while the rear side (3) a plate be available, which carries the various terminals, pins or the like. And that another plate (k) inside ■ * ■. · ■ 0 09842/1064 of the housing (i) is provided, which the electrical Facilities (a, B, c). 3 · Control unit for heating oil burners according to claim 1 and 2, characterized in that the side walls of the housing (i _{) carry contact strips (i5 t} 16, 17) on their inside, which are connected to the ones on the front of the housing (2)
provided connection means are connected and that
the plate (k ) carrying the electrical devices (A ₉ B _f c) is provided with spring contacts (18, 19t, 20a-c) which are closed to the electrical devices and which are partly resiliently attached to the contact strips (15, 16, 17 ) in the inside of the housing and on the other part merge into the connection means provided on the back of the housing (3) k » Control unit for heating oil burners according to claim 3»
characterized in that a contact strip (22) attached to the protective conductor in the interior of the housing (1)
is connected, is conductively connected to one of the fastening screws (23) « 009842/1064