RU2304259C2 - Heating convector with electrically controlled deflector - Google Patents

Abstract

FIELD: heating engineering.

SUBSTANCE: heating convector comprises opening for sucking air, air filter, heat exchanger, opening for discharging air, at least one controlled deflector that can be set in a number of positions intermediate between the closed position and the completely open position. The member is actuated by the electric drive through driving means. The electric drive is provided with a battery and is connected with the switching members for switching in the electric drive. The switching members have first single-pole switch for switching between the first and second positions depending on a given temperature interval and second single-pole switch for switching between the third and fourth positions depending on the driving group composed of cam and servo element. The electric drive is energized from the battery when the first and third positions or second and fourth positions provide formation of conducting line.

EFFECT: expanded functional capabilities.

8 cl, 5 dwg

Description

The invention relates to a heating convector with an electrically adjustable deflecting element, in particular, to a heating convector with a deflecting element, which can be controlled by a direct current electric drive.

State of the art

Widely known and used are convectors equipped with systems for opening and / or closing one or more deflecting elements or wings or rollers. To ensure the movement of these elements, such systems are equipped with means that can be controlled by voltage and current through an electric drive.

Also known are systems for opening and / or closing, which are equipped with means which can be controlled manually depending on the temperature determined by means of corresponding detecting devices.

US Pat. No. 5,505,379 (Wagner), US Pat. No. 2,698,570 (Feinberg), US Pat. No. 4,497,241 (Ohkata) and US Pat. No. 4,541,326 (Fukuda et al.) Disclose systems for opening and / or closing the above type. These patents actually disclose systems for opening and / or closing, equipped with one or more rollers with means for shifting such rollers manually or otherwise depending on a given temperature, or in a combination of two types of control.

In particular, US Pat. No. 5,505,379 (Wagner) discloses an air register that provides connectivity to industrially manufactured and commercially available registers equipped with movable deflectors. The movement of the deflecting elements can occur either by manual control, or by means of a temperature sensor in which a bimetallic strip is used.

In the latter case, the movement of the blinds is carried out during thermomechanical deformation of the bimetallic strip, that is, due to the deformation of the metal of which the strip of material is made, when the temperature of the air flow changes.

US Pat. No. 2,698,570 (Feinberg) discloses a device for controlling the direction of air and the distribution of air, equipped with deflecting elements that oscillate due to a bellows filled with heat-sensitive gas.

Such systems have a number of disadvantages, for example, inaccuracies in adjusting the movement of the deflecting elements depending on the measured temperature or the inability to vary the temperature range in accordance with which the deflecting elements move.

US Pat. Nos. 4,497,241 (Ohkata) and 4,541,326 (Fukuda et al.) Disclose a device for controlling the direction of air flow, equipped with a plurality of deflecting elements that oscillate due to the presence of springs and / or contact springs made of an alloy with shape memory effect. In this device, the contact spring provides the opening and / or closing of the deflecting elements depending on the temperature of the air flow.

The specified device also has the disadvantages illustrated in previous patents, that is, the inaccuracy of regulating the movement of the deflecting elements depending on the measured temperature and the inability to vary the temperature range, depending on which the deflecting elements are moved.

In addition, US patents 4,497,241 (Ohkata) and 4,541,326 (Fukuda et al.) Have the additional disadvantage that the opening and closing of the rollers is not proportional to the temperature, but on the "on / off" type.

EP 837288 discloses a convector with a fan and with deflecting elements, the position of which is adjusted around the axis between the closed position and the fully open position. This is done by means of a special drive means controlled by an electric drive. The electric drive is powered from the network, and control is carried out depending on the temperature determined by the thermostat.

The specified convector has the disadvantage that additional work is required to ensure the power supply of the electric drive, the installation cost is noticeably increased, and more complicated control of the electric drive regulation is also required.

Although the solutions disclosed in US Pat. No. 5,505,379 (Wagner), US Pat. No. 2,698,570 (Feinberg), US Pat. No. 4,497,241 (Ohkata) and US Pat. No. 4,541,326 (Fukuda et al.) Do not have electrical connections and are therefore more convenient to operate. , no solutions are proposed that are currently significant for the market, such as the possibility of varying the temperature range within which the deflecting elements move, or simple and quick installation of a heating convector, or operational flexibility when used even under conditions in which no connection to the mains.

An object of the present invention is to provide a heating convector with an electrically adjustable deflecting element capable of overcoming the disadvantages of known heating convectors.

Another objective of the present invention is to provide a heating convector with an adjustable deflecting element of an autonomous type.

In accordance with the present invention, the task is solved by creating a heating convector for heating air in enclosed spaces in accordance with paragraph 1 of the claims.

Thanks to the present invention, it is possible to make a heating convector for heating air capable of operating without being connected to an electrical network.

In addition, thanks to the present invention, it is possible to vary the temperature range in accordance with which the opening and / or closing of the deflecting element occurs.

Thus, a heating convector for heating air in enclosed spaces, comprises an opening (2) for suctioning air, equipped with an air filter (3), a heat exchanger (5) for heating air (4), an opening (6) for discharging air, having at least one adjustable deflecting element (7), which is configured to occupy many angular positions between the closed position and the fully open position and is driven by an electric drive (8) by means of a drive means (10), and according to the invention, an electric the actuator (8) is equipped with a battery (19) and is connected to switching means (11, 11a) for turning on the electric drive (8), while the switching means (11, 11a) contain a first single-pole switch (16) for switching between the first (16a) and second (16b) positions depending on a predetermined temperature interval (ΔT) and a second single-pole switch (17) for switching between the third (17a) and fourth (17b) positions depending on the drive group consisting of a cam (12b) and a follower (18), wherein supplying power from the battery ornoy battery (19) to the drive is carried out when the first (16a) and third (17a) position or the second (16b) and fourth (17b) position ensuring the formation of the conductive line.

In addition, the heating convector is characterized in that the first unipolar switch (16) can be a balloon type thermal relay.

The drive means (10) in the invention may be a pivotally tetragonal-type means containing a disk crank (12) located on the axis (X-X) of rotation of the electric drive (8), a swing arm (13) having one end placed on the axis (YY) of rotation of the adjustable deflecting element (7) so that the center (C) of rotation of the swinging lever (13) coincides with the axis of rotation (YY) of the adjustable deflecting element (7) and the connecting rod (15) for connecting the free end of the swinging lever (13) ) with a point (12a) of the disk crank (12) located th eccentric to the axis (X-X) of rotation of the electric drive (8) at a given distance (E).

In addition, the drive group with the cam (12b) can be formed by the contour (12b) of the disk crank (12) and has many individual parts of the contour, jointly rounded along the radius and having different values of the eccentricity relative to the axis (X-X) of rotation of the electric drive (8) .

In the inventive heating convector, the follower (18) can be held in contact with respect to the contour (12b) of the disk crank (12) by means of an elastic means.

According to the invention, the plurality of positions of the at least one adjustable deflecting element (7) may be a closed position and a fully open position.

The switching means (11, 11a) may be provided with a temperature sensor (21) and an electronic board (20), the temperature sensor (21) being connected to the electronic board (20).

In addition, the electronic board (20) can be designed to control the electric drive (8) in accordance with the temperature detected by the temperature sensor (21) by changing the angular position (α) of at least one deflecting element (7).

The battery (19) may have a nominal voltage of 9 V or 12 V.

The features and advantages of the present invention are explained in the following detailed description of suitable embodiments with reference to the accompanying drawings, in which:

figure 1 depicts a General view of a heating convector (with a partial tear), according to the invention;

figure 2 is a first embodiment of a schematic diagram of a heating convector according to the invention;

figure 3 is a second embodiment of a schematic diagram of a heating convector according to the invention;

4 is a General view of the first working position of the first embodiment of a heating convector, according to the invention;

5 is a General view of the second working position of the first embodiment of a heating convector, according to the invention.

The heating convector 1 (Fig. 1) contains an air intake hole 2 provided with an air filter 3. The air stream 4 moves from the environment through the opening 2 to the heat exchanger 5 due to natural convection.

This is due to the temperature gradient between the temperature inside and outside the heating convector 1 and the temperature inside and inside the heating convector 1 itself.

The heat exchanger 5 comprises a cooling coil (not shown) through which the hot fluid passes. The fluid is preferably, but not necessarily, water.

Thus, the air stream 4, sucked from the environment into the heating convector 1, is heated and moves to the air outlet 6 through at least one adjustable deflecting element 7.

Adjustable deflecting element 7 is driven and occupies many angular positions between the closed position and the fully open position by means of an electric actuator 8.

The electric drive 8 is capable of driving the deflecting element 7 in motion by means of a gearbox 9 to reduce the number of revolutions connected to the drive means 10.

In addition, the electric drive 8 is also connected to the switching means 11 and 11a, ensuring the inclusion of the electric drive.

In the example illustrated in FIGS. 1, 2, 4, and 5, the drive means 10 is a tetragonal type articulated means and comprises a disk crank 12 located on the axis XX of rotation of the electric drive 8, a swing arm 13 having an end mounted on the rotation axis YY of the adjustable deflecting element 7 so that the rotation center C of the swinging arm 13 coincides with the rotation axis YY of the adjustable deflecting element 7, a connecting rod 15 for connecting the free end of the swinging arm 13 with the point 12a of the disk crank 12, located minutes eccentrically to the axis X-X of rotation of the actuator 8 at a predetermined distance E.

It should be noted that the swing arm 13 is dimensioned such that the distance D between its pivot center C and the attachment point 13a to the connecting rod 15 exceeds the eccentricity E.

The above dimensions provide the ability to rotate the swing arm 13 by a predetermined angle α around the center of rotation C with each complete revolution of the disk crank 12 around the axis X-X.

Preferably, the rotation of the disk crank 12 by 180 ° corresponds to the rotation of the swing arm 13 by an angle α equal to 90 ° and the corresponding rotation of the deflecting element 7.

Therefore, with each complete revolution of the disk crank 12, the deflecting element 7 rotates first in one direction and then in the other through an angle of 180 °, that is, 90 ° at the first turn and 90 ° at the second turn.

Preferably, the switching means 11a is synchronized upon switching with a drive group consisting of a cam and an element driven by a cam.

Preferably, the cam, or rather the curved cam profile, is defined by the contour 12b of the crank 12, which is appropriately shaped to form a plurality of individual contour portions radially rounded relative to each other and having different eccentricities about the axis of rotation X-X.

The cam-driven element comprises a stylus 18 which, by means of known elastic means (not shown), is held in elastic contact at the contour 12b of the disk crank 12.

For the reasons explained below, the disk crank 12 has two separate angular sections, each of which has a different eccentricity value and extends on an arc of a circle of approximately 180 °.

Essentially, the cam profile 12b defined by the contour of the disk crank 12 has two break points of continuity, according to which the displacement of the stylus 18 determines the switching of the switching means 11a.

Preferably, the probe 18 is positioned relative to the disk crank 12 in such a way that the probe 18 recognizes the continuity gap of the curved contour 12b when the deflector 7 is in the closed or fully open position (FIGS. 4 and 5).

It should be noted that the switching means 11 (FIG. 2) comprises a first unipolar deviator 16 for switching between the first 16a and second 16b positions depending on the air temperature and further comprises a second unipolar deviator 17 for switching between the third 17a and fourth 17b positions depending on the angular position of the deflecting element 7.

In particular, the first unipolar deviator 16 is a balloon type thermal relay having a temperature range that can be set to meet user requirements by means of an adjustment knob (not shown). The thermal relay 16 of the balloon type operates in a known manner.

The angular position of the deflecting element 7 depends on the position occupied by the probe 18, which, as described above, is determined by the curved contour 12b of the disk crank 12.

Preferably, the electric drive 8 is powered by a battery 19 with a rated voltage of 9 V or 12 V.

The operation of the heating convector 1 is as follows.

As indicated above, the configuration of the first deviator 16 is a balloon type thermal relay, and the configuration of the second deviator 17 (Fig. 2) does not contain a conductive line, while the deflecting element 7 is in the closed position (Fig. 4). When the indoor temperature drops below a certain T1 value, the balloon type thermal relay 16 switches from position 16a to position 16b to form a conductive line.

The power of the electric drive 8 is provided from the battery 19, and the electric drive 8 opens the deflecting element 7 to a fully open position (figure 5).

In this case, the air stream 4 is heated by the heat exchanger 5, and the hot air leaves and enters the environment, is mixed with it by natural convection.

As soon as the probe 18 determines the break point of the continuity of the curved contour 12b of the disk crank 12, the second deviator switches from position 17a to position 17b. This causes a break in the conductive line and the electric drive 8.

When the indoor temperature reaches the second temperature setpoint T2, the balloon type thermal relay 16 switches from position 16b and returns to position 16a. Since the deviator 17 is in position 17b, a conductive line is formed again between the electric drive 8 and the battery 19 to allow further rotation of the electric drive 8 and, therefore, the deflecting element 7.

In this situation, the probe 18 "follows" the curved contour 12b having a lower eccentricity and reaches the point of discontinuity.

At this moment, the second deviator 17 switches from position 17b to position 17a, causing an interruption in the power supply to the electric drive 8. As a result of this movement, the deflecting element 7 returns to the closed position (Fig. 4).

The workflow described above is repeated when the indoor temperature drops below T1 and / or exceeds the T2 value, that is, when the indoor temperature takes values outside the temperature range ΔT, where ΔT = T2-T1.

For example, the temperature range ΔТ can be set from ten to thirty degrees Celsius with a "central" optimum temperature of 20 ° C.

Preferably, the user is able to adjust the temperature range ΔT by means of a knob (not shown), since the knob provides an effect directly on the balloon type thermal relay.

The electric drive 8 is a direct current electric drive operating at low voltages (from the battery 19) with a low current absorption of about several tens of milliamps.

In addition, the gearbox 9 provides a transition from a rotational speed of the electric drive 8 of about one thousand revolutions per minute to a rotational speed of about sixteen revolutions per minute.

In the second embodiment of the invention (Fig. 3), the electric drive 8 is connected via a gearbox 9 directly to the deflecting element 7 and to the electronic circuit board 20.

The electric drive 8 is connected to an adjustable deflecting element 7 without installing between them drive means 10, as in the first embodiment. In this case, the x-axis of the electric drive 8 coincides with the y-axis of the deflecting element 7.

The electronic board 20 is powered by a battery 19, the electronic board 20 including a temperature sensor 21.

The electronic board 20 provides the possibility (by means of a feedback device containing an amplifier and a bipolar half-wave rectifier bridge) to control the electric drive 8 by means of current pulses so that with each current pulse the electric drive 8 is shifted by a certain angle depending on the temperature determined by the sensor 21.

In other words, in the second embodiment, there is the possibility of opening and / or closing the deflecting element 7, as well as its movement between open and closed positions, that is, open / closed - on / off, as well as between many angular positions between the closed position and fully open position.

Therefore, this electric drive is a stepper motor.

Thanks to the present invention, it is possible to control the movement of the deflecting element 7 when opening / closing, which is proportional to the temperature detected by the temperature sensor 21.

Claims (9)

1. A heating convector for heating air in enclosed spaces, comprising an opening (2) for suctioning air, equipped with an air filter (3), a heat exchanger (5) for heating air (4), an opening (6) for discharging air, having at least at least one adjustable deflecting element (7), which is configured to occupy a plurality of angular positions between the closed position and the fully open position and is driven by an electric drive (8) by means of a drive means (10), characterized in that the electric drive (8) is provided n the battery (19) and is connected to switching means (11, 11a) for turning on the electric drive (8), while switching means (11, 11a) contain a first single-pole switch (16) for switching between the first (16a) and the second (16b ) positions depending on a given temperature interval (ΔT) and a second unipolar switch (17) for switching between the third (17a) and fourth (17b) positions depending on the drive group consisting of a cam (12b) and a follower element (18), moreover, the power supply from the battery (19) electric drive is performed when the first (16a) and third (17a) position or the second (16b) and fourth (17b) position ensuring the formation of the conductive line. 2. The heating convector according to claim 1, characterized in that the first unipolar switch (16) is a balloon type thermal relay. 3. The heating convector according to claim 1, characterized in that the drive means (10) is a tetragonal type articulated means containing a disk crank (12) located on the axis of rotation (X-X) of rotation of the electric drive (8), the swing arm ( 13) having one end located on the axis of rotation (YY) of the adjustable deflecting element (7) so that the center (C) of rotation of the swing arm (13) coincides with the axis (YY) of rotation of the adjustable deflecting element (7), and a connecting rod ( 15) for connecting the free end of the swing arm (13) with the point (12a) d Skov crank (12) situated eccentrically to the axis (X-X) of rotation of the actuator (8) at a predetermined distance (E). 4. The heating convector according to claim 1, characterized in that the drive group with a cam (12b) is formed by the contour (12b) of the disk crank (12) and has many individual parts of the contour, jointly rounded along the radius and having different eccentricity relative to the axis (X -X) rotation of the electric drive (8). 5. The heating convector according to claim 4, characterized in that the follower (18) is held in contact with respect to the contour (12b) of the disk crank (12) by means of an elastic means. 6. A heating convector according to any one of claims 1 to 5, characterized in that the plurality of positions of at least one adjustable deflecting element (7) are a closed position and a fully open position. 7. The heating convector according to claim 1, characterized in that the switching means (11, 11a) are equipped with a temperature sensor (21) and an electronic board (20), the temperature sensor (21) being connected to the electronic board (20). 8. The heating convector according to claim 7, characterized in that the electronic board (20) is designed to control the electric drive (8) in accordance with the temperature detected by the temperature sensor (21) by changing the angular position (α), at least one deflecting element (7). 9. A heating convector according to any one of claims 1 to 5, 7, 8, characterized in that the storage battery (19) has a nominal voltage of 9 or 12 V.

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