The heat source for heating liquids (options)

 

The invention relates to the field of power engineering and can be used for heating and hot water supply, and can also be used for heating viscous liquids when they are pumped through pipelines. The heat source includes located in the housing, at least one means for the acceleration of the fluid and at least one means for braking the movement of the liquid, made in the form of a paddle wheel. One impeller mounted for rotation under the action of the actuator is aligned with the other set still with the formation of the gap between the blades of the blade wheels. According to the first embodiment in the grooves between the blades of the stationary impeller installed partition with the possibility of its displacement along the height of the blade. According to the second embodiment of the hub of the rotary vane wheel is made so that the distance between its end and the end of the impeller is equal to 1/4 of the height of the blade. The technical result consists in increasing the efficiency, stability of the process of heating liquids, as well as increasing efficiency and capacity factor of the drive. 3 Il.

From the Oia buildings, buildings, vehicles, in particular during emergency situations caused by failures in systems of Central heating and hot water, the invention can also be used for heating viscous liquids when they are pumped through pipelines and to provide other economic needs associated with hot liquid.

A device for converting mechanical energy into thermal energy due to changes in physico-mechanical parameters of the working environment, such as pressure and volume (see USSR author's certificate No. 458591, F 25 B 29/00, 1972), which includes the body in the form of a spherical vessel filled with water, placed in it by the heat exchanger, pump drive, providing compression of the working environment inside the supply and return piping, isolating valves, and heat customer.

The main disadvantage of the described analog is high working pressure in the case, up to 100 MPa, which complicates the design and impairs safe operation.

The closest analogue (prototype) is the heat source described in the patent of Russian Federation №2045715, F 25 B 29/00, 1995, and includes a housing with cilindro pipe, coupled with cyclone mounted on one end of the cylindrical part of the housing. The opposite end of the cylindrical part of the housing has a bottom with an outlet that communicates with the outlet pipe of the casing. Inside the cylindrical part of the housing of a brake device with radial ribs. When this outlet is connected via a bypass pipe with a cyclone, and in the area of their connection installed additional braking device. When the pump fluid under pressure 0.4-0.6 MPa is fed into the injection nozzle, accelerating it, twisted into a spiral cyclone and braked on the walls of the cylindrical part of the body and the edges of the braking device. As a result of changes in pressure and flow velocity of the liquid is heated and enters the heat exchangers.

The main disadvantage of the prototype is its unstable heating capacity (i.e. the amount of thermal energy of the heated fluid per unit time), which is determined by the magnitude of the useful mechanical power on the shaft of the motor. Reject the heat output can reach 1.5-2 times as in the direction of its increase, and in the direction of humanistische parameters of high-speed fluid flow in the channel of the heat generator. These parameters are reproduced in the result of the interaction of three uncontrolled elements of design: channel flow, the pump and motor. In these conditions, even a small deviation of the operating characteristics lead to significant deviations of the value of the loading torque and heat output. In the case of increasing the heat output of the electric motor is overload, which is unacceptable because of the possibility of overheating of windings and failure. In the case of reducing the heat output of the electric motor works with the load and the generator does not produce the required amount of heat. As when underload motor and overload to the loading point, different from the nominal, reduced coefficient of performance (COP) of the motor and the load factor.

Thus, the problem to which the present invention is directed, is to ensure a stable and predictable flow of fluid in the device. The technical result achieved by the invention is in improving the efficiency, stability and controllability of the process of heating liquids, as well as the increase To the s to the above technical result, in all cases, covered amount requested legal protection, can be characterized by the following set of essential features.

The heat source includes located in the housing, at least one means for the acceleration of the fluid and at least one means for braking the movement of the liquid, made in the form of a vane wheel, and means for fluid supply. Impellers are located coaxially with the formation of a gap between them. One impeller mounted for rotation under the action of the actuator. Another impeller fixed. On it in the groove between the blades installed partition with the possibility of its displacement along the height of the blade.

In addition, in the particular case of the invention, the blades on the first and/or second blade wheel can be performed on the end surface of the blade element at an angle to its radius.

In addition, in the particular case of the invention, the first impeller and/or the second impeller can be installed with adjustable gap between their end surfaces.

In addition, in the particular case of the invention, the device may include may be a screw element.

In the second embodiment, the heat source includes located in the housing, at least one means for the acceleration of the fluid and at least one means for braking the movement of the liquid, made in the form of a paddle wheel. Impellers are located coaxially with the formation of a gap between them. One impeller mounted for rotation under the action of the actuator. Another impeller fixed. The hub of the impeller, which is mounted for rotation under the action of the actuator is performed so that the distance between its end and the end of the impeller is equal to 1/4 the height of his blade.

In fact, the device can be used impeller of the hydrodynamic coupling, similar to that used for transmission of torque between the two shafts (Gavrilenko, A. B., Semichastnov I. F. Hydrodynamic transmission: Design, manufacture and operation. - M.: Mashinostroenie, 1980). In conventional hydrodynamic coupling coaxially and turbine wheels rotate with some slippage relative to each other. In this regard, the working fluid is heated, however, the quantity of generated heat is small compared to ve the e jet) allows you to turn all the mechanical energy of the motor into thermal energy of the heated fluid.

The possibility of carrying out the invention described above, sets of signs, and the possibility of implementation of the assignments of the invention can be confirmed by the description of a design of a heat generator to heat the fluid in accordance with the claimed invention. Description construction is illustrated graphics, which depict the following:

Fig.1 is a schematic diagram of a heat generator (option 1).

Fig.2 is a schematic diagram of a heat generator (option 2).

Fig.3 is a diagram of the formation of the blades.

In the first embodiment, the heater 1 for heating liquids includes a housing 2, which represents an insulated tank with a liquid, separated by a partition 3 drain 4 and outlet 5 compartments. In spill Bay 4 performed the inlet 6, and the discharge outlet 7. The holes are connected with respectively the drain, and discharge nozzles with at least one heat exchanger (not shown). In the housing 2 is posted means for acceleration and deceleration of the fluid that is made in the form of paddle wheels 8 and 9 and represents two wheels hydrodynamic transmission with blades 10. Lapoinniemi transmission) and impeller 9 (pump wheel of the hydrodynamic transmission) ribs with grooves 11 between them. Between the blades of the impeller 9 is installed partition 15. Moreover, this partition is installed with the possibility of its displacement along the height of the groove. Thus the longitudinal axis O1O2vanes (fins) are angled==0to the radius of the corresponding wheel, but may be located at an angle other than 0including can be designed so that the blades 10 of the impeller 8 and the vane wheel 9 will be directed towards each other. Vane wheel 9 is fixedly mounted in the housing 2 and the impeller 8 is installed coaxially him on the shaft 12 of the drive motor 13 with the possibility of its rotation. In the particular case of impeller installed with adjustable gap And between the ends of the vane wheel by moving vane wheel 8 and/or 9 along the shaft 12. On the shaft 12 mounted means for supplying fluid 14, which is made in the form of a screw placed in the inner hole of the blade element 8 with the formation of the slit for the passage of fluid from the drain cover 4 of the housing into the cavity From between the paddle wheels 8 and 9. The diameter d of a circle, bounding photoshoplena fluid from the screw 14 through the gap In the cavity From between the blade element and the impeller.

In the second embodiment, the heater 1 for heating liquids includes a housing 2, which represents an insulated tank with a liquid, separated by a partition 3 drain 4 and outlet 5 compartments. In spill Bay 4 performed the inlet 6, and the discharge outlet 7. The holes are connected with respectively the drain, and discharge nozzles with at least one heat exchanger (not shown). In the housing 2 is posted means for acceleration and deceleration of the fluid that is made in the form of paddle wheels 8 and 9 and represents two wheels hydrodynamic transmission with blades 10. The blades are made on the respective ends of the impeller 8 (jet wheel of the hydrodynamic transmission) and impeller 9 (pump wheel of the hydrodynamic transmission) ribs 11 with grooves between them. Thus the longitudinal axis O1About2vanes (fins) 10 are angled==0to the radius of the corresponding wheel, but may be located at an angle other than 0including can be designed so that the blades 10 lastlogin in the housing 2, and vane wheel 8 mounted coaxially him on the shaft 12 of the drive motor 13 with the possibility of its rotation. In the particular case of the implementation of the impeller is installed with adjustable gap And between the ends of the vane wheel by moving impeller along the shaft 12. The distance between the end surface of the hub impeller 8 and its front surface is equal to 1/4 of the height of the blades of the wheel 8.

The device operates as follows:

When switching on the electric motor 13, the fluid from the heat exchanger flows into the drain compartment 4 of the housing through the opening 6. In the first version of the compartment 4, the liquid is fed by a screw 14 in the grooves of the vane wheel and accelerating under the action of centrifugal force, moves from the center to the periphery, where the flow is twisted and falling into the grooves of the blade element is braked, moving to the center, and then re-enters the grooves of the vane wheel. As a result, the liquid heats up and through the gap And under pressure enters the pressure compartment 5 of the casing and then through the opening 7 and outlet pipe to the heat exchangers.

The fluid flow through the flow channel of the heat generator and the differential pressure between the pressure and drain the compartments is I, spent the rotation of the impeller 8, almost completely converted into thermal energy of the heated fluid. Therefore, the heat output of the unit can be determined by the work load torque impeller on the shaft speed. The value of the loading torque is stable, because it depends mainly on the active diameter of the impeller and can be calculated by the well-known formulas for the hydrodynamic transmission. The actual value of the load torque can be adjusted by moving the partition between the blades along the blades. This allows you to use the same heat source with drive motors of different power.

In addition, in the limited range of the actual value of the loading torque can be adjusted by changing the gap And bring it up to the nominal torque of the motor. In the second embodiment, the screw is missing, however, shortened hub impeller allows the flow of water into the space between the impeller and the impeller element. Because there is no special tool for the fluid, it simplifies the design halogene the angling of the motor rated torque, that ensures stable heat output corresponding to the rated power of the motor, with maximum efficiency and ensures its versatility.

The above-described variants of design of a heat generator to heat the fluid in accordance with the claimed invention, demonstrate the possibility of realization of the purposes of the invention and achieve the above technical result, but it does not exhaust all possibilities of carrying out the invention, is characterized by a set of features described in the claims.

Claims

1. The heat source includes located in the housing, at least one means for the acceleration of the fluid and at least one means for braking the movement of the liquid, made in the form of a paddle wheel located coaxially with the formation of the gap between their end surfaces of the blades, and means for feeding fluid into the cavity between the paddle wheels, with the first impeller mounted for rotation under the action of the actuator, wherein the second impeller is stationary mounted in the housing, and in pazarlar under item 1, characterized in that the blades on the first and/or second vane wheel is made at an angle to its radius.

3. Heat under item 1 or 2, characterized in that the first impeller and/or the second impeller mounted for regulating the gap between their end surfaces.

4. Heat generator according to any of paragraphs.1-3, characterized in that the means for the fluid is a screw element.

5. The heat source includes located in the housing, at least one means for the acceleration of the fluid and at least one means for braking the movement of the liquid, made in the form of a paddle wheel located coaxially with the formation of the gap between their end surfaces with blades, with the first impeller mounted for rotation under the action of the actuator, wherein the second impeller is stationary mounted in the housing and hub are made so that the distance from its end surface to the end surface of the specified impeller is equal to 1/4 of the height of the blades.

6. Heat generator according to p. 5, characterized in that the blades on the first and/or second vane wheel is made at an angle to its glad the forest set with adjustable gap between their end surfaces.

 

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