ES1059751U - Electronic thermostat. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Electronic thermostat, of the type comprising a management module (13), with temperature sensor, for actuating a heat generator (3) through a switch (15) connected to a wiring (2) with two terminals (11) for the activation/deactivation of said heat generator (3) by connection/disconnection of said terminals (11), characterized in that it comprises a power module (12) of the management module (13), connected to the two terminals (11) of the signal wiring (2) of the heat generator (3), said power module (12) comprising: a voltage generating module (16), with the switch (15) open, and a module (18) voltage generator, with the electronic switch (15) closed, obtaining said power modules (18, 16), the wiring (2), the electric power needed to power the management module (13), without using another additional feeding (Machine-translation by Google Translate, not legally binding)

Description

Electronic thermostat

Object of the invention

The present invention relates to a thermostat electronic, of the type that includes a management module and temperature sensor for driving a generator heat through a switch connected to a wiring with two terminals, for activating and deactivating said generator by connection or disconnection of said terminals.

Background of the invention

At present the generating devices of heat, such as gas or diesel boilers used for heating, are related to one or more thermostats arranged at a distance, which regulate the ambient temperature, turning on the heat generator when the temperature picked up by the thermostat is low and turning it off when the preset temperature.

These thermostats are connected to the heat generator by wiring, so that the generator it may be some distance from the stay or stays in the The thermostat is located. This cable has two terminals or  wires, so that when the two terminals connect it closes a circuit that drives the heat generator and when the two terminals are disconnected the circuit opens, causing the shutdown of the heat generator.

Thermostats can be of various types, the simplest being those of the mechanical type, which include usually a bimetallic contact that closes or opens the circuit Between the two terminals. These mechanical thermostats have a wheel or mechanism that regulates the operating temperature working on the mentioned contact, and do not need supply external energy unless they carry some type of indicator bright or other.

There are also more sophisticated thermostats, which use digital or analog regulation electronics and a sensor of room temperature, allowing a control of said more precise temperature, in addition to allowing some such functions As on schedule. These thermostats need a power supply Electric for operation.

Finally there are digital thermostats of latest generation that through a microcontroller also allows of multiple room temperature control setting Power on or remote control functions. These thermostats They also need power for operation.

Except for mechanical thermostats commented all the others require a power supply for its funtionability. This power supply can come of a battery or battery housed in the thermostat itself or of a cable power supply connected to the mains or to the generator hot. Therefore, the use of these thermostats requires, well the use of batteries that must be replaced periodically, or the passage of a power cable electricity from the mains or from the heating device, which complicates installation, especially when you want to replace a mechanical thermostat, which does not require power, by a electronic thermostat

Description of the invention

The electronic thermostat of this invention comprises constructive particularities that allow connection to the cables or connection terminals and disconnection of a heat generator, and obtaining said electrical power cables necessary for its operation, without resorting to the use of batteries, nor of use additional cables for power supply from the heat generator or from the power grid.

This electronic thermostat comprises a module power, which connects to the wiring of two terminals that usually presents the boiler or heat generator for On and off by means of a thermostat.

This power module is in turn related to the management module and temperature sensor by two power cables and at least a third signal cable or drive means that is responsible for operating the electronic switch or relay that controls the generator hot.

The power module comprises a module voltage generator with the switch open and a module voltage generator with the switch closed, being said power module operatively capable of supporting operation of the signal switch from the management module to the generator heat and perform the extraction of electrical power supply for said management module and temperature sensor from the cited two-wire heat generator wiring, without external power

The voltage generating module with the switch open is arranged between the two wiring terminals of signal and before the switch. Take advantage of the voltage difference existing between the two terminals when the circuit is open for the extraction of electric power by voltage drop between said terminals. Said voltage drop enters the threshold that the heat generator accepts as an open switch, but that it is sufficient for the economic consumption of the management module and temperature sensor.

The voltage generating module with the switch closed is arranged on the conductor of one of the terminals, in series with the switch. Said voltage generator module with the closed switch comprises means for extracting electrical power by induction of the current flowing between the wiring terminals. So, when the switch is closed, the current that acts as the driving signal of the heat generator induces in a coil or similar a voltage that It serves to power the management module and sensor temperature.

The power module can present optionally a current rectifier at the input of the two-terminal wiring, so that, even if the polarities when splicing inside the device, These polarities are correct.

Description of the figures

To complement the description that is being performing and in order to facilitate the understanding of characteristics of the invention, is attached herein descriptive a set of drawings in which, for illustrative purposes and not limiting, the following has been represented:

- Figure 1 shows a block diagram of the thermostat of the invention with the power module and the management module and temperature sensor, having been represented said thermostat connected to a boiler or heat generator.

- Figure 2 shows a block diagram of the thermostat power module, including a rectifier additional.

Preferred Embodiment of the Invention

As can be seen in the figures referenced the thermostat (1) comprises a power module (12) and a management module (13), with temperature sensor, being the latter related by a signal socket (14) with a switch (15), connecting / disconnecting the two terminals (11) of the control wiring (2), causing said switch (15), depending on its position, the activation or stopping of a boiler or heat generator (3). In this way, the thermostat will connect only to the two terminals (11) of the wiring (2) of heat generator control (3).

The power module (12) comprises a module (16) voltage generator with the switch (15) open, connected to the two incoming terminals (11) of the wiring (2) and arranged before the switch (15), presenting this module (16)  power outputs (17) to the management module (13). This module (16), voltage generator, comprises means for extracting electrical power due to voltage drop between said terminals (11) of the wiring (2).

In series with the switch (15) and arranged on the conductor of one of the wiring terminals (11) (2) there is a voltage generation module (18) with the switch (15) closed, presented this module (18) power outputs (17) to the management module (13). The module (18) comprises some means of extracting electric power by induction of the current flowing between the two terminals (11) of the wiring (2) when the switch (15) is closed.

In the exemplary embodiment shown in the figures the power module (12) comprises a rectifier optional (19) of current in the wiring input (2).

Once the nature of The invention, as well as a preferred embodiment, is for the appropriate purposes that the materials, form, size and arrangement of the elements described may be modified, as long as this does not imply an alteration of the essential features of the invention claimed in continuation.

Claims (6)

1. Electronic thermostat, of the type comprising a management module (13), with temperature sensor, for the activation of a heat generator (3) through a switch (15) connected to a wiring (2) with two terminals (11) for activating / deactivating said heat generator (3) by connecting / disconnecting said terminals (11), characterized in that it comprises a power module (12) of the management module (13), connected to the two terminals (11) of the heat generator signal wiring (2) (3), said power module (12) comprising: a voltage generator module (16), with the switch (15) open, and a module (18) voltage generator, with the electronic switch (15) closed, obtaining said power modules (18, 16), from the wiring (2), the electrical energy necessary to power the management module (13), without using another additional feeding 2. Thermostat according to claim 1, characterized in that the voltage generator module (16) with the switch (15) open, is disposed between the two terminals (11) of the wiring (2) and connected before the switch (15). 3. Thermostat according to claim 2, characterized in that the module (16) comprises means for extracting electric power by voltage drop between the terminals (11) of the wiring (2). 4. Thermostat according to claim 1, characterized in that the voltage generator module (18) with the switch (15) closed, is arranged on the conductor of one of the wiring terminals (11) (2) and in series with the switch (15). 5. Thermostat according to claim 4, characterized in that the module (18) comprises means for extracting electric power by induction of the current flowing between the terminals (11) of the wiring (2). 6. Thermostat according to any of the preceding claims, characterized in that it comprises a current rectifier (19) connected at the wiring inlet (2) to the power module (12) of the thermostat (1).