DE206809C - - Google Patents

Description

PATENT OFFICE.

PATENT LETTERING

- M 206809 CLASS 42 /. GROUP

ERNST AQUARIUS and MAX LANGE in BADEN-BADEN.

Electric heat regulator with contact thermometer. Patented in the German Empire on May 1, 1907.

It is already known that in the event of exceeding or falling below certain, adjustable Temperature limits by an electrical contact thermometer, fans automatically can be switched on or off by supplying appropriately heated or cooled Outside air or by sucking in inside air, keep the warmth of the room within certain limits.

The present invention now relates to a special circuit type for the circuits that cause the fan to be switched on and off, which causes the fan to run even if the temperature falls below the maximum remains switched on and only switches off when the temperature falls below the minimum value.

An exemplary embodiment of the invention is shown schematically in the drawing.

On a thermometer t several contacts 18, 20, 22, 24, 26 etc. are arranged at the points corresponding to these degrees of heat, which are connected by as many lines a to a corresponding number of contact pieces of a tap changer s on which two contact slides b and c are adjustable. This device is known per se for thermostatically acting thermometers. The upper contact slide δ is connected to one pole of an electric battery d through a line 1 passed through a relay r , and the lower slide c through a line 2 to the other pole of the battery. At the same time, a contact is arranged at a lower point of the thermometer, for example at the 0 point, which is connected by a line 3 to the armature / 'of the relay r . This anchor can close a contact k and at the same time a contact e; the former is connected to the low-voltage line 1 routed through the relay, while the latter is isolated from the armature and can connect the two high-voltage lines 4 and 5 to one another. The line 5 is routed via an electromagnetic switch g , which can connect the line 4 to a line 6 at h. The latter leads to an electric motor-driven fan v, which on the other hand is connected to the power line 5 by a second line 7. '

The two sliders b and c can be used to set the maximum and minimum temperatures at which a heat change is to be brought about by the fan or this change is to be limited. In the drawing, the upper slide b is set to 26, the lower one, c, to 18. If the mercury column of the thermometer rises to 26, this closes the battery circuit, which then flows back to the battery from battery d through line 2, slide c, contacts 18, mercury column, contacts 26, slide b and line 1 via relay r . As a result, the armature f of the relay is attracted, through which the contact e is now closed. As a result, a high current +, 4, e, 5, g, 5, - flows, whereby the contact h is closed and the line 6 is connected to the line 4. Now a circuit -j-, 4, h, 6, v, 7, 5, - takes place, through

Ct

Claims (1)

WC that the fan υ is put into operation. At the same time as the contact e , however, the armature / also closed the contact k , so that a low-voltage circuit d, 2, c, 18, mercury column, o, 3, /, k, 3, r, 1, d also came about that keeps the relay armature / still attracted when the mercury column sinks below 26 and thereby the circuit via 1 and 2 is interrupted. The contact e therefore also remains closed, so that the fan υ continues to run. Only when the conductive connection between 18 and 0 is interrupted, i.e. the mercury has dropped below 18, the relay circuit is opened and the armature / is released, whereby all circuits are interrupted and the fan comes to a standstill. In the same way, several fans can be used with the thermometer and the Connect switching device. and in doing so the arrangement can be made such that e.g. a fan is activated when the set maximum temperature is reached, which supplies cool air while falling below the set minimum temperature a fan is switched on to supply warm air. It goes without saying that instead of the mercury thermometer described above, other thermometers can be used, e.g. B. Metal thermometer. As shown in the drawing, an on / off switch i can be inserted into the line leading from the 0 contact to the relay armature / opening, which stops the fan as soon as the respective contact set to the maximum temperature is opened due to the drop in mercury. With the device described, an alarm device can also be connected in a known manner, which at high temperature, for. B. when a fire breaks out, comes into action. For this purpose, in the arrangement shown, a contact is provided on the thermometer t at 50, from which a line 8 leads to the line 4. In addition, a line 9 is connected to the line 1 coming from the contact slide b and is led to an alarm bell m . From this another line 10 goes via line 7 to line 5. If the mercury in the thermometer rises to contact 50, the alarm circuit is closed and the bell m is activated. Pa τ ε ν τ - A ν s P R υ c H: Electrical heat regulator with contact thermometer, which switches on a fan when a maximum temperature is reached and switches it off again when the temperature falls below the minimum, characterized by two switching circuits, the first of which (d, 2, c, 18, 26, b, I, r, 1) when the maximum temperature is exceeded (at 26) switches on and the relay (r, f) closes the operating current (4, e, f) for the fan (v), if necessary with the interposition of a second relay (g, h) , and the second of which (d, 2, c, 18, 0, 3, /, k, 3, r, τ) is also closed by the relay fr, f) , this flows through itself and thus continues even if the temperature falls below the maximum keeps closed (and also keeps the fan running) until it is opened when the temperature falls below the minimum (at 18). 1 sheet of drawings.