EP1462728A1 - Flow device for a hydraulic circuit - Google Patents

Abstract

The flow device for especially a water circuit in heating systems has several distance rings (0.0) as flow accelerators built onto the heating surfaces (0.8) and with between two and four opening slots on their annular circumferential faces formed between spacing ribs. A flow filter is connected into the pipe system and consists of a main collecting and relief chamber (1.4,1.5), an additional throughflow area and additional throughflow elements (1.13), a second collecting device (1.12) constructed as a reversal chamber, and a gas collecting chamber (1.6).

Description

The invention relates to a flow device for liquid circuits in Heating, cooling and air conditioning systems, especially a flow device for a closed water circuit in heating systems.

It is known that in modern heating systems the sensitive control and control elements the most complete and effective restraint possible the solid impurities and gaseous substances present in the water Require components.

To retain contaminants and gases in heating systems as much as possible and to be able to absorb and thus work more energy-efficiently are already various systems and methods known.

Both the periodic flushing of heating systems, the use of chemicals as well as the installation of previously known screens or filters and their cleaning exchange are associated with a high expenditure of time and money.

In addition, the high maintenance and the often achieved low cleaning effect ineffective.

In particular, it is necessary to remove impurities and radiators Keep mud free, otherwise the heat dissipation performance of the Heating surfaces significantly reduced and the dirt disrupted the whole Heating system leads.

It is known to use so-called support rings as spacers between the heating surfaces a radiator or when inserting and exporting the pipe system into the Use radiators. Have these spacer rings in the heating surfaces on its peripheral surface for the passage of the heating water into the heating surfaces several small holes with a maximum diameter of <5 mm have. The circuit of the heating water in the heating surfaces points due to these flow holes only a small flow in the Heating surfaces. As a result, dirt and contamination particles are increasingly present inside the heating surfaces. The adverse consequences are, as is known, the reduced heat output of the heating surfaces.

According to DE 19717 883 is a cleaning device for a liquid in the Pipe system of closed circuits, preferably in heating systems known that from a flow area arranged in the flow direction Collecting device with a second flow area opposite flow direction and a relaxation and gathering room consists. Due to different flow directions and different Diameter and cross-sectional areas of the individual flowed through by the water Laminar and turbulent flow of water and areas change hence its flow rate so that the contaminants separate out and collect in a relaxation and gathering room.

The cleaning device is preferably used as a connector for heating systems executed and upstream of the sensitive part of the heating circuit. The advantage of this cleaning device is that by the double Transition from laminar to turbulent flow with a double Reducing the flow rate of the heating water a double Separate and collect different contaminant particles and so that there is an increased cleaning effect.

The disadvantages of the cleaning device, however, are that the gaseous components such as air, oxygen or CO ₂ , which are in the heating water or arise from chemical reactions of certain impurities, continue to have a disruptive and energy-reducing effect on the heating circuit.

The object of the present invention is a flow device for liquid cycles, especially for a water cycle in To create heating systems through which the flow rate in the Heating surfaces increased and thus the deposition of impurities removed and subsequently both solid dirt and contamination particles different size, composition and consistency as well as gaseous Components of the water in the piping system of the heating circuit are specifically separated, collected and eliminated.

According to the invention the object is achieved in that the flow device for liquid circuits is characterized in that several Spacer rings built into the heating surfaces as flow accelerators preferably with two to four opening slots between spacer bars a flow filter in the pipe system with the main collection and - relaxation room, with a further flow area, with a second Collecting device, with further flow elements and with one Gas collecting space is connected downstream.

The preferred embodiment of the flow accelerator according to the invention is a spacer ring with three opening slots between three Spacers designed so that the spacers each 120 ° to each other are staggered.

In addition, an embodiment of the is used as a flow accelerator Spacer ring characterized in that the opening slots Have length of the spacer bars.

The advantages of the flow accelerator according to the invention exist in that the flow rate through the opening slots designed according to the invention of the heating water in the heating surfaces is increased.

Due to the accelerated flow there is a higher swirl in the water-bearing heating surfaces of a radiator instead, so that the impurities be flushed out of the heating surfaces into the piping system. The Heating surfaces of the radiators remain clean and warm up faster. The use of energy is much more effective. The the piping system Contaminations flowing through are subsequently reduced by means of flow filters caught and collected.

The downstream of the flow accelerator Flow filter is also characterized in that the cross-sectional area the further flow range is less than that of the main collection and relaxation space and the cross-sectional area of the others Flow elements is less than that of the second collecting device, so that each time the liquid enters the further flow range and a transition from turbulent flow to the flow elements laminar flow and thus a separation of gaseous components he follows. Via the gas collection space of the flow filter and the vent valve separation and removal of the gaseous takes place Impurities and components.

The further features and details of the flow filter are in the dependent claims, the description and the drawing.

The advantageous features of the flow filter according to the invention exist in that due to its constructive design according to the invention both a multiple transition from laminar to turbulent flow with a decrease in flow rate as well as a multiple Transition from turbulent to laminar flow with an increase in the Flow rate. This makes both a separation and Collect the solid dirt and contamination particles as well gaseous components safely and successfully for the entire liquid cycle given.

That from the radiators or from the distribution system of floor and Water flowing back into the heating surfaces is fed through the inflow pipe Swirl space brought.

When the water returns to the main collecting space through a narrow annular gap flows, the flow rate changes several times.

Part of the flow stays in the main plenum for a long time gives the foreign substances and gases the opportunity to settle.

The foreign matter is removed via the closure parts and the vent valve and gases removed. The water loss is minimal.

The flow device according to the invention with flow accelerator and flow filter is suitable for
all hot water heating systems,
all closed and open circuits,
all non-corrosive media,
Solar systems,
underfloor heating,
Heat pumps.

Radiator - und Fußbodenheizungen,

Wärmepumpen,

Solaranlagen,

für jeden geschlossen Kreislauf unter den beschriebenen

Einsatzbedingungen.

Bei mit Sauerstoff oder anderen Gasen belasteten Anlagen wird mit einem nachgeschalteten Entlüftungsventil auch eine sichere Abscheidung von Gasen erzielt. Auch für große abzuscheidende Mengen an Luft, Sauerstoff, Kohlensäure und anderen Gasen ist die erfindungsgemäße Strömungsvorrichtung geeignet.The separation performance extends to all particles that are at least 20% heavier than the carrier medium water. This means that even particles made of PVC, whose density of 1.19 is far below that of the usual foreign substances, are still captured by the filter. The flow devices are designed for a peak operating pressure of 8 bar and a continuous temperature of 120 ° C. They are particularly suitable for:

Radiator and underfloor heating,

heat pumps,

Solar systems,

for each closed circuit among those described

Operating conditions.

In systems loaded with oxygen or other gases, a safe ventilation of gases is also achieved with a downstream vent valve. The flow device according to the invention is also suitable for large amounts of air, oxygen, carbonic acid and other gases to be separated.

Since the flow device according to the invention always with an acceleration the flow of the liquid circuit and with a filtration of the Flow fluid is connected, it has the following advantages:

The flow filter fulfills the special features of the closed circuit. The particles do not have to be separated all at once. Like attempts have shown, these particles grow during operation. Long before If a critical size is reached, the particles are separated.

For example, in a plant with 2001 water content, if the water in 10 Operating hours circulated over 50 times are the after a few weeks Foreign matter removed.

This means that with only 5 operating hours a day and a filter effectiveness from only 1% the foreign matter is reduced by 95% in 2 weeks.

Even in problematic systems with oxygen entry, where the reactions never lead to Come to a standstill, the harmful consequences are largely prevented.

If stationary parts of the plant become operational again after a long time taken, the dirt arrives in real "clouds". This too Irregularities are compensated for by the flow device.

The flow device according to the invention can flow in or out a closed or open circuit. Your impact extends to keeping plants clean and filtering everyone Particle sizes, even the solutes are precipitated and become the largest Part withheld.

The flow device is easy to install in existing systems can be used with its components in front of all heat generators and those at risk Assemble devices ..

The invention is based on a preferred embodiment described, preferably for a closed water cycle Heating system.

• Figur 1: die erfindungsgemäße Strömungsvorrichtung in schematischer Einbaudarstellung;
• Figur 2: den Distanzring in perspektivischer Darstellung;
• Figur 3: den Strömungsfilter in schematischer Seitenansicht;
• Figur 4: den Distanzring in schematischer Seitenansicht
• Figur 5: den Distanzring in schematischer Draufsicht;
• Figur 6: Doppelheizflächen mit Distanzringen in Seitenansicht.

The following drawings show:

• Figure 1: the flow device according to the invention in a schematic installation representation;
• Figure 2: the spacer ring in perspective;
• Figure 3: the flow filter in a schematic side view;
• Figure 4: the spacer ring in a schematic side view
• Figure 5: the spacer ring in a schematic plan view;
• Figure 6: Double heating surfaces with spacer rings in side view.

The flow device according to the invention according to Figure 1 is an additional device Can be installed in the closed water circuit of a heating system.

The flow device according to the invention is shown schematically in FIG. 1 and consists of flow accelerators according to the invention in the form of spacer rings 0.0 installed on the heating surfaces 0.8 and one of these downstream flow filter according to the invention in the piping system 1.0. Since the 0.1; 0.2; 0.3 of the spacer rings 0.0 the Heating surfaces 0.8 flowing through heating fluid flows accelerated, is a settling of dirt and contamination particles in the Heating surfaces 0.8 of the radiator prevented. In the piping system of the Heating system is a flow filter 1.0 with 0.8 heating surfaces Spacer rings 0.0 downstream, in which dirt, and settle and separate gas particles of the flow liquid. The flow accelerator according to the invention for water circuits from Heating systems is constructed as a spacer ring 0.0 according to Figure 2. He has a known flow opening 0.4 and on its annular Circumferential surface according to the invention a plurality of opening slots.

FIG. 2 shows a spacer ring 0.0 with three opening slots 0.1, 0.2, 0.3 between three spacer bars 0.5, 0.6, 0.7. These are preferably three Opening slots 0.1, 0.2, 0.3 as well as the spacers 0.5, 0.6, 0.7 evenly distributed over the circumference at an angle of 120 ° to each other arranged.

According to the desired flow rate through the Opening slots 0.1-0.3 flowing heating water is the length of the Opening slots 0.1-0.3 over the circumference of the spacer ring are designed differently.

The length of the opening slots is preferably 0.1 to 0.2 approximately twice the length of the spacer webs 0.5, 0.6, 0.7. In different In versions, this means that the opening slots 0.1, 0.2, 0.3 preferably the same, but in other variants up to approximately that have double length.

Further embodiments of the flow accelerator according to the invention can be used as a spacer ring 0.0 with two or four opening slots 0.1, 0.2 or 0.1, 0.2, 0.3n and two or four spacers 0 5, 0 6 or 0.5, 0.6, 0.7n at a distance of 180 ° or 90 ° to each other.

According to these embodiments, the opening slots of the Spacer ring 0.0 a multiple length to the length of the spacer bars.

Figures 3 and 4 represent spacer rings 0 0 in a preferred embodiment with three opening slots 0.1, 0.2, 0.3 and three spacer bars 0.5, 0.6, 0.7 in schematic side and top view.

FIG. 6 shows the double heating surfaces 0.8 with built-in spacer rings 0.0 in side view.

Due to the opening slots 0.1, 0.2, 0.3 and Spacers 0.5, 0.6, 0.7 of the spacer rings 0.0, it is possible to control the flow to accelerate the heating water flowing through so that a higher Swirling takes place in the water-bearing heating surfaces 0.8.

The dirt particles do not attach due to the accelerated flow the heating surfaces or the impurities from the heating surfaces flushed into the piping system and by means of the downstream flow filter 1.0 caught.

The flow filter 1.0 is in the piping system according to FIGS. 1 and 3 installed and built. The heating water of the heating system appears as Flow liquid into the flow element 1.1 as the inflow pipe of the Flow filter 1.0 with all contaminants in this filter and leaves it cleaned from the flow element 1.13 as an outflow pipe Dirt and gas particles.

The flow element 1.1 is designed as an inflow pipe for the liquid and perpendicularly penetrates a main pipe of larger diameter, which has a main collecting and relaxation space 1.4; 1.5 forms and ends inside a tubular collecting device 1.2. This is firmly connected to the main pipe of the main collection and relaxation room 1.4, 1.5. The diameter of this collecting device 1.2 is larger than that of the flow element 1.1, so that the following diameter ratios apply;

The annular gap between the collecting device 1.2 and the flow element 1.1 forms the flow area 1.3, which in the main collection - and - relaxation room 1.4, 1.5 opens.

The collecting devices 1.2 is used as a reversing chamber for the direction of flow Liquid is formed, causing the settling and collecting of contaminants becomes possible in the collecting device 1.2.

Due to the different diameters of the interconnected Pipes of the flow filter occur when the flow through the inflow pipe 1.1 Liquid in the transition into the collecting device 1.2 and in the Flow range 1.3 a change in the flow rate. there takes place between the flow element 1.1 and the collecting device 1.2 a transition from laminar flow to turbulent flow, so that the Impurities are deposited there and in the collection device 1.2 are included. Preferably takes place in the collecting device 1.2 a flow reversal in the flow area 1.3.

This opens into the main collection and relaxation room 1.4, 1.5, in the in turn the fluid is swirled: the flow rate is in the flow range 1.3 a multiple of the flow rate in the flow element 1.1.

Die im Verwirbelungsraum 1.4 des Hauptsammel - und - entspannungsraumes 1.4, 1.5 ausgefällten Verunreinigungen und Schmutzpartikel sinken in den Entspannungsraum 1.5 und sammeln sich.Depending on the different diameters of the individual components of the flow filter 1.0, there are different flow velocities for the flowing liquid in the ratio:

The impurities and dirt particles precipitated in the swirling space 1.4 of the main collection and relaxation space 1.4, 1.5 sink into the relaxation space 1.5 and collect.

The settled impurities can be removed and the flow filter 1.0 can be cleaned via the removable closure part 1.9 attached to the collecting device 1.2 and the closure part 1.8 arranged on the relaxation space 1.5. In order to also effectively separate the gaseous constituents in the liquid, the flow filter 1.0 according to the invention has a further tubular collecting device 1.12 parallel to the collecting device 1.2, which is also connected at right angles to the main pipe of the main collecting and relaxation space 1.4, 1.5. Inside the collecting device 1.2, a flow element 1.11 is also arranged parallel to the flow element 1.1 in such a way that it passes continuously through the main pipe of the main collection and relaxation space 1.4, 1.5 into the flow element 1.13 in its function as an outflow pipe. Since the diameters of the individual tubular components are also graded as follows:
1.11, 1.13 <1.12 <1.4, 1.5, 1.6
a second flow area 1.10 also arises in the form of an annular gap in the collecting device 1.12. The gaseous constituents, preferably air, CO ₂ or O ₂ , which separate from the liquid in the swirling space 1.4, rise vertically and collect in the gas collecting space 1.6 with the vent valve 1.7

The collecting device 1.12 is also a reversing chamber with a removable one Closure part 1.9 executed

The liquid rising in the swirling space 1.4 flows at a high rate Flow rate through the flow area 1.10 into the collecting device 1.12. In the reversal chamber, the swirling takes place in combination with the pressure release, a further swirling and degassing of the Liquid.

Due to the transition of the liquid from the collecting device 1.12 into the Flow element 1.11 takes place with a pressure increase, a transition from turbulent in laminar flow. Air and gases follow this change in state limited. They will not be dissolved in the liquid again and will divorce from the flow area 1.10 in the gas collecting space 1.6.

After the gases in the gas collection chamber 1.6 have calmed down, they are released via the Vent valve 1.7 removed from the flow filter.

List of the reference numerals used

0.0

spacer

0.1

opening slot

0.2

opening slot

0.3

opening slot

0.4

flow opening

0.5

spacer web

0.6

spacer web

0.7

spacer web

0.8

heating surface

1.0

flow filter

1.1

flow element

1.2

collection device

1.3

Flow range

1.4

Main collector and-relaxation room

1.5

Main collector and-relaxation room

1.6

Gas collection space

1.7

vent valve

1.8

closing part

1.9

closing part

1.10

Flow range

1.11

flow element

1.12

collection device

1.13

flow element

Claims (13)

Flow device for liquid circuits, in particular for a closed water circuit in heating systems, consisting of a cleaning device as a flow element with a collection and relaxation space in the pipeline system, characterized in that that a plurality of spacer rings (0.0) installed on the heating surfaces (0.8) as flow accelerators with several, preferably two to four, opening slots (0.1; 0.2; 0.3) arranged on their annular peripheral surfaces between a plurality of spacer webs (0.5; 0.6; 0.7) a flow filter (1.0 ) in the piping system with the main collection and relaxation space (1.4; 1.5), with a further flow area (1.10), with a second collection device (1.12) designed as a reversing chamber, with further flow elements (1.11; 1.13) and with a gas collection space (1.6) is connected downstream. Flow device according to claim 1, characterized in that the spacer rings (0.0) with the flow opening (0.4) each have three opening slots (0.1; 0.2; 0.3) between three spacer webs (0.5; 0.6; 0.7) and the spacer webs (0.5; 0 6; 0.7) each around Are 120 ° offset from each other and that the opening slots (0.1; 0.2; 0.3) of the spacer rings (0.0) are em to twice the length of the spacer webs (0.5; 0.6; 0.7). Flow device according to claim 1, characterized in that the cross-sectional area of the further flow area (1.10) of the flow filter (1.0) is smaller than that of the main collection and relaxation space (1.4; 1.5) and the cross-sectional area of the further flow elements (1.11; 1.13) is smaller than that of the second collection device (1.12). Flow device according to one of claims 1 and 3, characterized in that that the collecting devices (1.2; 1.12) of the flow filter (1.0) each have a removable closure part (1.9) for the removal of deposited impurities and the gas collecting space (1.6) has a vent valve (1.7) for the escape of air and gas. Flow device according to one of claims 1 to 4, characterized in that that each time the liquid enters from the main collection and expansion space (1.4; 1.5) of the flow filter (1.0) into the further flow area (1.10) and from the second collection space (1.12) into the flow elements (1.11; 1.13) there is a transition from turbulent flow reduced flow rate to laminar flow. Flow device according to one of claims 1 to 5, characterized in that that during the transition from turbulent flow of the liquid in the main collection and expansion tube (1.4; 1.5) of the flow filter (1.0) to laminar flow of the liquid in the flow area (1.10), the gaseous constituents of the liquid separate and rise into the gas collection space (1.6) he follows. Flow device according to one of claims 1 to 6, characterized in that that the collecting devices (1.2; 1.12) of the flow filter (1.0) at the end of the flow elements (1.1; 1.11 and 1.13) are arranged as reversing chambers and the flow direction of the liquid in the subsequent flow elements (1.11; 1.13) opposite to the flow direction in the first flow element (1.1 ) he follows. Flow device according to one of claims 1 to 7, characterized in that that the flow element (1.11) of the flow filter (1.0) is followed by a flow element (1.13) designed as an outflow pipe. Flow device according to one of claims 1 to 8, characterized in that that the further flow area (1.10) of the flow filter (1.0) is designed as an annular gap which communicates with the main collection and relaxation space (1.4; 1.5). Flow device according to one of claims 1 to 9, characterized in that that the first flow element (1.1) of the flow filter (1.0) is designed as an inflow pipe and the last flow element (1.13) as an outflow pipe for the liquid and that the flow elements (1.1, 1.11; 1.13) are arranged vertically through the main collection and relaxation space (1.4; 1.5) and to the gas collection space (1.6) and parallel to each other. Flow device according to one of claims 1 to 10, characterized in that that the gas collection chamber (1.6) of the flow filter (1.0) with the vent valve (1.7) is arranged at the upper end of the main collection and expansion chamber (1.4; 1.5). Flow device according to one of claims 1 to 11, characterized in that that the main collection and relaxation space (1.4; 1.5) of the flow filter (1.0) is designed as a swirling space (1.4) for loosening and precipitating the dirt and gas particles and as a relaxation space (1.5) for depositing and collecting the dirt particles and a removable one Has closure part (1.8) for the removal of impurities. Flow device according to claims 1 to 12, characterized in that that it can be used as an additional device in the closed water circuit of a heating system, in an air conditioning system or in a cooling system.

Images