DK2880369T3

DK2880369T3 - A method for controlling the flow of heating medium through a plurality of rows, and a radiator for implementing this method

Info

Publication number: DK2880369T3
Application number: DK13716177.4T
Authority: DK
Inventors: Tomás Hrdlicka
Original assignee: Korado As
Priority date: 2012-07-31
Filing date: 2013-03-07
Publication date: 2019-03-25
Also published as: EP2880369A1; TR201903351T4; EA028000B1; WO2014019557A1; PL2880369T3; CZ2012522A3; EP2880369B1; CZ307673B6; RS58593B1; UA114720C2; HUE043277T2; EA201491626A1

Description

DESCRIPTION

Field of the Invention [0001] This invention relates to the method of controlling the flow of heating medium through a multiple row radiator, in particular through the heating plate unit with an inlet port and an inflow fitting of the heating medium, with the first passing-through heating plate facing the heated room I space and with at least one heating plate situated behind said first plate intended for reducing flow of the heating medium for cutting or controlling the heating output, as well as of the multiple row radiator to provide a controlled flow of the heating medium and especially according to the patent claims 1 and 4.

Description of the Prior Art [0002] Currently, radiators, especially the heating plate units are manufactured as single or multiple row units, inside of which a space for the flow of heating medium, which is usually water, is provided. The heating medium is supplied into the individual heating plates from the inlet port through the supply outlets and flows always symmetrically into each of the heating plates, i.e. the same amount into all heating plates, or asymmetrically, usually preferably into the first of the heating plates facing the heated room, using a system for flow distribution such as different screens, but there is always no possibility to control the flow ratio distributed among individual heating plates, or to close the relevant inlet, etc. Moreover, the interiors of heating plates or those of other similar radiators are always hydraulically interconnected, so that it is impossible to control the flow of heating medium through a single heating plate without having to influence the flow of the heating medium through the second or subsequent heating plate of known mutually hydraulically interconnected multiple row heating radiators.

[0003] One example of approach that consists in preferring higher heating output of the front heating plate facing a heated room at a multiple row heating radiator, is known from the published patent application (CZ PV 1998-2158), according to which the relevant double row or multiple row heating radiator is preferably provided with a single inlet port, which is connected only with the frontal heating plate facing the heated room. The heating medium, which flows through this inlet port, is distributed along the upper edge of the front heating plate and through suitably dimensioned feeding channels situated perpendicularly thereto, and which are preferably spaced equally in the frontal region facing the heated room. Regardless of whether the radiator is operated at full or partial load, the heating medium is in that way primarily supplied to the front heating plate and subsequently to the remaining heating plates of the multiple row heating radiator. Consequently, the front radiator plate will be warmer thus presenting more pleasant touch feeling than existing systems. Preferably, this advantageous effect is even intensified by the fact that the front of the heating plate has a higher radiation ratio.

[0004] To facilitate the flow of heating medium from the front heating plate into at least one heating plate positioned behind it, at least one connecting tube or possibly a supply outlet are arranged in the system, and said item is preferably situated at the lower front corner area of the radiator heating plate, from which then the cooled-down heating medium flows into the bottom of the second heating plate situated behind it or possibly into the subsequent plate of the multiple row heating radiator. In this second heating plate the heating medium is supplied at first upwards to the upper longitudinal edge of the second or possibly the subsequent heating plate, wherein the liquid is again directed through the upper distribution channel provided and then it is supplied by means of perpendicularly attached flow channels to the second lower corner area with a connected outlet port. However, it is supposed that the heating medium transfers the greater part of its heat to said frontal heating plate, while entering, already partially cooled, the second or subsequent heating plates, providing in such a way a reduced heating output.

[0005] The obvious drawback of this arrangement is that the regulation of the reduced heating output of the second or subsequent heating radiator plates of the multiple row heating unit can not be controlled. Another drawback of this solution consists in the fact that if compared with standard solutions of the multiple row heating radiators, where the hot heating medium streams equally into all heating plates to be cooled down, the thermal performance of the entire heating plate radiator is generally lower because the hot heating medium flows into the front heating plate at first while the second or subsequent heating plates are supplied with already cooled-down heating medium, thereby reducing the heating output of the second and possibly subsequent heating plates.

[0006] The patent application No. EP 0 116 434 A1 discloses a valve system for fabricating a multi-panel radiator, said system comprising a pair of flow regulating valves each having multiway connector means for connecting the respective waterways of at least two single panel radiators in parallel and each having pipe connection means for permitting connection to respective flow and return service water pipes. However, this technical solution is not applicable to a standard heating plate radiator.

[0007] The radiator according to the patent application No. EP 2 474 789 A1 has heating elements provided with lead and return line and unit for separately controlling supply of heating medium to heating elements. The device has actuator or valve for controlling the supply of heating medium to heating element and for controlling the supply of heating medium to heating element. The actuator or valve is constructed so that no heating medium is flowed into heating element in partial load operation and no heating medium is flowed from heating element into heating element. This technical solution allows selectively control the flow of heating medium into panels but resolves it always only on the inflow by one or two inlet valves.

[0008] BE 1015936A describes a heating radiator according to the preamble of claim 4. Its operating method corresponds to the preamble of claim 1.

Nature of the Invention [0009] The substance of the present invention is to improve the method of the flow control of the heating medium through the multiple row radiator, especially through the heating plate radiator that is equipped with an inlet and outlet ports of the heating medium with the first passing-through heating plate facing a heated room I space and with at least one subsequent heating plate situated in a row behind it with intended medium flow reduction for cutting or controlling the heating power, whereby the specified task is achieved by the invention, characterized in that the heating medium supplied through a common inlet port is distributed without restriction in individual heating plates, and then the liquid returns through individual drainage connectors to be selectively merged in a single outlet stream emptying into the outlet port.

[0010] The method of the flow control of the heating medium according to the present invention provides the advantage that the ratio of individual outlet streams of the heating medium from individual heating plates can be modified by selective merging in the range from 0 to 100% or vice versa.

[0011] Furthermore it appears advantageous that the outflows of returning heating medium from all heating plates can be completely shut off through said selective merging.

With regard to ambient conditions prevailing in heated rooms, as well as the amount of heat energy in the heating system, it is particularly advantageous that the selective merging of the outflow of the returning heating medium from the individual heating plates can be set with predetermined ratio, or that the selective merging of the outflows of returning heating medium from the individual heating plates can be set individually or controlled with variable ratio.

[0012] According to the invention it appears advantageous that the method of controlling the flow can be applied without special measures to every known multiple row radiator that consists of at least two rows of heating sections arranged one behind the other, in particular of the heating plates equipped with upper distribution channels and lower collecting channels interconnected by a system of vertical channels, and with distributing channels at every corner that are interconnected with supply fittings, which are blind, with the exception of one inflow fitting at the inlet port, whereas the supply fitting for the common outlet port is equipped with central separation screen for separating and attaching the individual outflows of the returning heating medium from individual heating plates into mutually separated channels in the body of an additional selective outflow merger connected to a common outlet port. The selective merger operation is advantageously based on the principle of flow throttling, and it is sufficient that throttling or closing devices for manual or motor controlled hydraulic resistance modification are arranged across of at least one of the mutually separated channels of the selective merger body.

[0013] The design of the multiple row radiator according to the invention does not limit the usual equipment of such a radiator, for example that a central control valve being arranged in series with the inlet port and the inflow fitting for distribution of the heating medium among all heating plates etc.

Description of the Drawings [0014] Further advantages and effects of the invention are apparent from the attached drawings, wherein they depict:

Fig. 1: schematic depiction of the two-row radiator showing the inflow of the heating medium from the inflow fitting into the radiator system and individual streaming of the heating medium flows between mutually not connected hydraulically individual radiator plates and their mutually separated outflow through the outflow fitting into mutually separated channels of the selective merger at the outlet port,

Fig. 2: schematic depiction of the arrangement of the separation screen in the outflow fitting showing the continuous separation of outflows of the heating medium in the selective merger body (hatched highlighted) into the closing fitting before the oulet port,

Fig. 3: plan section of the two-row radiator drawn from its upper distribution channels with a inflow fitting (left), and lower distribution channels with the outflow fitting (right), equipped with separation screen to separate the individual outflows of the returning heating medium from individual heating plates or from their groups into mutually separated channels in the body of the additional selective outflow merger of said individual outflows,

Fig. 4: cross section of a blind supply outlet arrangement or of a outflow fitting, if applicable,

Fig. 5: schematic depiction of the multiple row radiator showing the inflow of the heating medium from the inflow fitting of the radiator system, with the heating medium inflow into other heating plates by means of passing-through distance tubes, wherein some of which may be blank, etc.,

Fig. 6: schematic depiction of the two-row radiator showing the inflow of the heating medium from the inflow fitting in the radiator system and individual streaming of the heating medium flows between mutually hydraulically not connected heating plates and their mutually separated outflow through the outflow fitting into mutually separated channels of the selective merger at the outlet port, whereby the selective merging of the outflows of returning heating medium from the individual heating plates can be controlled according to the predetermined variable ratio required by the user or automatically, depending on the ambient temperature and other conditions, with use of an actuator with a corresponding sensor or thermostatic head.

Fig. 7: schematic depiction of the two-row radiator not in accordance with the invention, showing the inflow of the heating medium with an inverted arrangement chain of the heating medium inflow and outflow elements, through which the heating medium is selectively distributed by a selective merger already in the inflow fitting that is equipped for this purpose with a separation screen, while the outflow fitting that connects each individual outflow from the heating plates, is loosely shared with the outlet to the outlet port through a shut-off fitting,

Fig. 7a: detail of schematic serial connection of the selective merger bodies with the control valve at the inlet port, not in accordance with the invention.

Fig. 8: schematic depiction of the two-row heating radiator with bottom connection to the heating system through the usual valve set showing the inflow of the heating medium into the inflow fitting and optionally placeable selective merger body,

Fig. 9: longitudinal section of an exemplary arrangement of a simple two-channel selective merger body with a throttle valve connected to the outflow fitting with a separation screen.

Fig. 10: cross section of the selective merger body, drawn parallel to the throttle valve.

Examples of the method of execution of the controlled flow [0015] A method to control the flow of heating medium through the multiple row radiator 1, particularly the multiple row heating plate unit with the inlet port 2 and the outlet port 3 for the heating medium with the first heating plate 4 facing a heated room (space) and with at least one subsequent heating plate 5 situated in a row behind it, with intended medium flow reduction for cutting or controlling the heating output, is illustrated by using several schematic depictions of alternative arrangements of the multiple row radiator 1, comprising for example at least two such rows of known heating plates 4,5, arranged one behind the other and fitted inside with the upper distribution channels 6 and the lower collection channels 7, interconnected through the system of here not shown vertical channels.

[0016] As exemplary shown in said figures, particularly in Fig. 1, 5, 6 and 8, the heating plates 4,5 of the heating radiator 1 are mutually rigidly connected on the corners at their upper distributing channels 6 and the lower collection channels 7 by means of the spacer bushings 8, which, however, are blind unlike the usual and well-known fittings, as highlighted hatched in the figures, except for the inflow fitting 9 at the inlet port 2 of the heating medium, wherein the necessary outflow fitting 10 for the common outlet port 3 of the cooled-down heating medium is equipped with the separation screen 11 (hatched highlighted) for the separation of individual outflow of the returning heating medium from individual heating plates 4,5 or their groups into the separate channels 12,13 of an additional body of the selective merger 14 of said individual outflows. The body of the selective merger 14 is then connected either directly or through the shut-off fitting 15 to the common outlet port 3.

[0017] Blindings of the said spacer bushings 8 are either done already by the manufacturer or they are additionally provided with various flexible screens 16. etc., and at least one of them is equipped with a vent valve (not shown).

[0018] The suggested arrangement of the radiator 1 shows, as also depicted in Fig. 7, that the inflow and outflow chain of the heating medium may be mutually arranged in a reversed position, namely, that the heating medium is selectively distributed by the selective merger 14 with splitting function already in the inflow fitting 9 that is equipped for this purpose with the separation screen 11. whereas the outflow fitting 10 that interconnects the individual outflows from the heating plates 4,5 is free for outflow through the shut-off fitting 15 to the outlet port 3. The selective merger 14. now acting as a selective splitter may be preceded by a usual control valve 20 (Fig. 7a), or the merger 14 and the control valve 20 can be connected to form a single device 25. This reversed arrangement is however not covered by present invention.

[0019] In cases of the three- or four- row arrangement of the heating plates 4,5 in the sequence one behind the other, the groups formed by every other heating plate 5 are mechanically and hydraulically connected at the corners of their upper and lower distribution channels 6, 7, by using for example spacer tubes 16. whereby some of them are blind, according to the above outline of the basic layout of the multiple row radiator 1, etc.

[0020] As indicated above, the body of the selective merger 14 is designed as a two-channel one and depending on wide range of its executions, one of its channels 12 can be equipped either with only one simple throttling screen 17 that is provided with various predetermined throttling orifices 18, or with variously arranged throttling or closing passing-through devices 19 (not shown in more detail) situated across both channels 12,13 and arranged separately from each other, such as rotary or slide valves, throttling screws, valve pins, etc., which are preset by the manufacturer to be manually or motor controlled or mounted only after installation of the multiple row radiator 1 in the heating system in order to achieve the desired change of hydraulic resistance of the individual channels 12,13 of the selective merger 14. hence of the hydraulic resistance of the heating plates 4,5 or their groups for the heating medium that enters the system of the multiple row radiator 1 through the inflow fitting 9 at the inlet port 2, usually equipped with shut-off or control valve 20.

[0021] As it apparently results of the described example of the physical arrangement of the multiple row radiator 1 including the generally referred accessories, it is obvious that the heating medium from the common inlet port 2 is distributed essentially without restriction into individual heating plates 4,5 of the multiple row heating radiator 1, whereupon the streams of the heating medium, which are returning after their parallel individual outflows, are selectively merged in a single outflow before the common outlet port 3, whereby is particularly ensured that at least on one heating plate 5, installed in a row behind the first passing-through heating plate 4 facing the heated room or space, the intended flow reduction of the passing-through heating medium takes place, therewith reducing its heating power, and vice versa, and so on.

[0022] The present method of controlling the flow of the heating medium trough the multiple row radiator 1, in particular the heating plate unit, has the effect, due to its sophisticated design and the optional selective merger 14. that the ratio of the individual outflows of the returning heating medium from the individual heating plates 4,5 can be modified by the selective merging in the range from 0 to 100%, or vice versa.

[0023] The selective merging, too, again according to the chosen design of the selective merger 14. can be completely interrupted so that the outflows of the heating medium returning from all heating plates 4,5 would be completely shut off, thereby meeting the current requirement to have the radiators 1 fitted with the bottom shut-off fitting 15.

[0024] The said selective merging of the outflows of the heating medium returning from the individual heating plates 4,5 is set already by manufacturer to predetermined ratio or alternatively the selective outflow merging of the heating medium returning from the individual heating plates 4,5 is set or individually controlled with variable ratio required by the user or automatically depending on the ambient temperature and other conditions, such as use of the actuator 21 with the corresponding sensor 22 (Fig. 6), etc.

[0025] The selective merging of the outflows of the returning heating medium, hence the design of the selective merger 14, does not preclude that the radiator 1 fitted with it is adapted for the classical upper connection to the heating system, or that it is equipped with so-called bottom connection 23 (Fig. 8), with the bottom central connection using known valve set 24 (not shown here) etc.

[0026] The design of an exemplary arrangement of a quite simple double channel selective merger body 14 connected to the outflow fitting 10 with a separation screen 11 is shown in Fig 9. 10. The throttling screen 17 with a predetermined diameter of the throttling orifice 18 is arranged at least in one of the parallel channels 12,13.

REFERENCES CITED IN THE DESCRIPTION

This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

Patent documents cited in the description • CZ19982158 (00031 • EP0116434A1 [00061 • EP2474788AI [60071 • BE1015936A [00081

Claims

A method for controlling the flow of heating medium through a plurality of rows, through the heating plate unit with a common inlet port (2) and a common output port (3) for the heating medium, with a first through-going heating plate (4) facing a heated room / compartment, and with at least one other passageway heating plate (5) located behind the first heating plate (4), in order to reduce the heat medium flow and in particular reduce the heat effect of the heating plate, whereby the heating medium from the common entrance port (2) unobstructedly distributed into the individual first passage heating plate (4) and the at least one, second individual passage heating plate (5), characterized in that the heating medium then flows into mutually separate channels (12, 13) in the body in an additional, selective output flow mixer (14) connected to the common output port (3), whereby throttling or closing devices (17, 19) are disposed across at least one paired channels (12, 13) in the body of the selective mixer (14).

Method for controlling the flow of heating medium according to claim 1, characterized in that the outflows of the heating medium returning from all individual through-going heating plates (4, 5) are completely closed due to the effect of the selective mixture.

Method for controlling the flow of heating medium according to claims 1 and 2, characterized in that the selective mixture of outflows of the returning heating medium from individual through-flow heating plates (4, 5) is adjusted with a predetermined ratio.

4. A heating radiator consisting of at least two rows of individual through-flow heating plates (4, 5) arranged one behind the other and equipped with upper distribution ducts (6) and lower connecting ducts (7) interconnected by a system of vertical channels and in each corner of these channels (6,7) equipped with interconnected spacer bushes (8), characterized in that the spacer bushes (8) are blind except for an inflow fitting (9) on the input port (2) and the outlet fitting (10). ) on the common exit port (3), whereby the outlet fitting (10) is mounted with a central separating screen (11) for separating individual outflows of the heating medium returning from individual through-flow heating plates (4, 5) and into mutually separate channels (12). (13) in the body of an additional selective outflow mixer (14) connected to a common exit port (3), whereby devices (17, 19) for throttling or closing are arranged on across at least one of the spaced channels (12, 13) in the body of the selective mixer (14).

Heat radiator according to claim 4, characterized in that a control valve (20) is arranged in series with the inlet port (2) and the inflow fitting (9) for distributing the heating medium into all individual through-going heating plates (4, 5).