RU31087U1 - AKVA-ET fluid induction heater (options) - Google Patents

Description

AQUA-ET LIQUID HEATER (options)

The proposed utility model relates to electrotechnological equipment and is intended for electric heating of liquids. The highest energy characteristics are possessed by transformer-type induction fluid heaters.

Known induction fluid heater (US Pat. RF No. 2074529, "Induction fluid heater, ed. Elshin A.I. et al., BI. No. 6.1997), comprising a housing, a transformer with a multi-rod ferromagnetic core located therein on the rods with a multiphase primary winding connected to an alternating current main and a secondary winding being a heat exchanger, the heat exchanger being made in the form of a hollow chamber with a lower inlet and an upper outlet for the passage of a heated fluid in which there are vertical channels with electrically conductive walls, in each of which a transformer core rod is installed. The heater is equipped with closed circuits of electrically conductive material installed around each through channel, and the housing is filled with a liquid dielectric. The main disadvantage of this device is the complexity of manufacturing.

Also known is an induction fluid heater of transformer type (US Pat. Germany. 3811546, publ. 10/27/1988), in

wherein the secondary winding is made of an electrically conductive tube and

It is possible to regulate power using the bias magnetizer included in the power supply circuit of the primary winding of the heater. The disadvantages of this device can also be attributed to the complexity of the design, high metal consumption.

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which is covered by the primary winding connected to the energy source, and the secondary winding, covering the primary winding, which is one massive coil of electrically conductive material, in which there is a multi-turn channel for the flow of the heated fluid, pipes for supplying cold and draining hot fluid. These pipes are located in places having the same electrical potential. In this case, the primary winding is also partially made of an electrically conductive tube, which is equipped with an input device for introducing a heated fluid and can be equipped with a device for forcing the fluid in it. A secondary winding is provided from an electrically conductive material having, in one case, a small surface effect, in the other case, a large surface effect, in the third case, of a ferromagnetic material. The mentioned device is made in two versions: with a single-phase magnetic circuit and with a three-phase magnetic circuit.

The disadvantages of the said device include the complexity of the design and the insufficiently high electrical safety, the level of which depends on the insulating inserts at the points of connection of the part of the primary winding that is made of a tube. No equalization of temperature and liquid pressure during heater operation is provided. In addition, there is no power control on the side of the secondary winding of the device.

The technical problem solved by the utility model is to simplify the design and provide the possibility of equalizing the temperature and pressure of the liquid during operation of the heater, as well as the ability to control power consumption, increasing the electrical safety of the device.

a primary winding connected to an energy source, covering its secondary winding from an electrically conductive material, having fluid channels, nozzles for supplying cold and draining hot fluid, the secondary winding on each core of the magnetic circuit is made of an electrically conductive tube in the form of two semi-windings, one of which is made with right winding, and the other with left winding, interconnected by electrically conductive tubes, while the electrically conductive connecting tubes, as well as nozzles for supplying cold bone and pipes for discharging the hot fluid interconnected hollow conductive jumpers-collectors.

According to the second embodiment, in a known induction liquid drier containing a magnetic circuit, a primary winding covering each rod and connected to an energy source, a secondary winding of electrically conductive material covering the primary winding and having fluid channels, nozzles for supplying cold and draining hot liquid, the magnetic circuit is made three-core, each secondary winding is made of two half-windings, one of which is made with the right winding, and the other with the left winding, interconnected conductive tubes, while the connecting conductive tubes, as well as nozzles for supplying cold liquid and nozzles for draining hot liquid, are interconnected by hollow conductive jumpers-collectors.

In addition, additional continuous jumpers can be installed along electrically conductive tubes connecting the semi-windings and connected by hollow conductive jumpers to collectors, and hollow conductive jumpers-collectors connecting cold fluid supply nozzles and hot fluid discharge nozzles are equipped with each ground wire .

Figure 1 schematically shows a General view of a single-phase induction fluid heater (in section).

Figure 2 presents an embodiment of the connecting conductive tubes, hollow conductive jumpers-collectors and additional solid jumpers.

In Fig. 3, an electrical diagram of the connection of the secondary winding for a variant of a single-phase induction fluid heater is shown.

In FIG. 4 schematically shows a General view of a three-phase induction fluid heater (in section).

Figure 5 presents an embodiment of the connecting conductive tubes and hollow conductive jumpers of the collectors for a three-phase execution of the induction fluid heater.

Figure 6 - electrical diagram of the connections of the secondary winding of a three-phase induction fluid heater.

The proposed device contains a magnetic circuit 1 (Fig. 1) having two rods, and, accordingly, two groups of windings covering each rod: a primary winding 2 connected to an energy source 3, a secondary winding 4, pipes for supplying cold 5 and removal of hot 6 fluid . The winding 4 is made of an electrically conductive tube and is made in the form of two semi-windings 7 and 8, interconnected by electrically conductive tubes 9, and covers the primary winding 2. One of the semi-windings 7 is made with right-hand winding, and the other 8 with left-hand winding. The electrically conductive tubes 9 are interconnected by a hollow conductive jumper-collector 10 and (Fig. 2) an additional solid jumper 11, The nozzles for supplying cold liquid 5 and the nozzles for draining hot liquid 6 are interconnected by hollow conductive jumpers-collectors 12, each of these jumpers -collectors equipped with a grounding wire 13.

Presented in figure 4, a variant of a three-phase induction fluid heater contains a magnetic core 1 made of a three-core, and, accordingly, three groups of windings covering each rod. Connecting conductive tubes 9 are connected by a conductive jumper-collector 10 (FIG. 2) and an additional solid jumper 11 mounted for movement along the tubes 9.

The proposed device operates as follows. When voltage is applied to the primary winding 2 (Fig. 1) from the energy source 3, an electromotive force is induced in the secondary winding 4, and in two half-windings half-windings 7 and 8, connected according to the star pattern (Fig. 3), due to the conductive jumper-collector 10, currents and heat is released. The magnetic flux generated by the semi-windings 7 and 8, located on the same rod, are directed according to the fact that the currents in the semi-windings, made one on the left, the other on the right, are directed in different directions. The heated fluid is supplied through the inlet pipes 5, is pumped through the semi-windings 7 and 8 and the electrically conductive tubes 9 connecting them and the hollow conductive jumper of the collector 10 and leaves through the branch pipes 6.

The implementation of the conductive jumpers 10, 12 in the form of collectors, which can be made in the form of a tube of increased diameter compared to its constituent conductive tubes 9 or nozzles 5.6, and sealed at both ends, allows you to equalize the temperature and pressure of the liquid in the tubes during work induction heater. Thanks to the secondary winding of the tube, simplified technological operations in the manufacture of the heater. Electrical safety is ensured by grounding 13 (Fig. 1, 3, 4, 6) of conductive jumpers-collectors 12 connecting the inlet and outlet of the fluid. When setting up induction

the heater, you can adjust its power by moving an additional solid jumper 11 (Fig.2.5) along the connecting conductive tubes.

Claims (3)

1. An induction fluid heater comprising a magnetic circuit, a primary winding connected to an energy source and located on two rods of a magnetic circuit, covering its secondary winding of an electrically conductive material, having channels for liquid, pipes for supplying cold and draining hot liquid, characterized in that the secondary the winding is made of an electrically conductive tube in the form of two semi-windings, one of which is made with the right winding, and the other with the left winding, interconnected electrically conductive logging, thus electrically connecting the tube and pipes for feeding the cold fluid and outlet pipes for hot fluids interconnected hollow conductive jumpers-collectors. 2. An induction fluid heater, comprising a magnetic circuit, a primary winding covering each rod and connected to an energy source, a secondary winding of electrically conductive material, covering the primary winding and having fluid channels, nozzles for supplying cold and draining hot liquid, characterized in that the magnetic circuit made of three rods, each secondary winding is made of an electrically conductive tube in the form of two semi-windings, one of which is made with the right winding, and the other with the left winding d, interconnected by electrically conductive tubes, wherein the electrically conductive tubes, as well as nozzles for supplying cold fluid and nozzles for draining hot fluid, are interconnected by hollow conductive jumper-collectors. 3. The induction fluid heater according to claim 1 or 2, characterized in that on the conductive tubes connecting the semi-windings and connected by hollow conductive jumpers-collectors, additional continuous jumpers are installed with the ability to move them along the connecting tubes, and hollow conductive jumpers-collectors connecting nozzles for supplying cold liquid and nozzles for draining hot liquid, each equipped with a grounding wire.