CA2590240C - Multifunctional sandwich frame for installation superstructures containing thermally influenced media - Google Patents
Multifunctional sandwich frame for installation superstructures containing thermally influenced media Download PDFInfo
- Publication number
- CA2590240C CA2590240C CA2590240A CA2590240A CA2590240C CA 2590240 C CA2590240 C CA 2590240C CA 2590240 A CA2590240 A CA 2590240A CA 2590240 A CA2590240 A CA 2590240A CA 2590240 C CA2590240 C CA 2590240C
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- CA
- Canada
- Prior art keywords
- sandwich
- installation
- frame
- multifunctional
- installation superstructure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D10/00—District heating systems
- F24D10/003—Domestic delivery stations having a heat exchanger
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/44—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the purpose
- E04C2/52—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the purpose with special adaptations for auxiliary purposes, e.g. serving for locating conduits
- E04C2/521—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the purpose with special adaptations for auxiliary purposes, e.g. serving for locating conduits serving for locating conduits; for ventilating, heating or cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/007—Auxiliary supports for elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/0097—Casings or frame structures for hydraulic components
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/17—District heating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
Abstract
The invention relates to a multifunctional sandwich frame for installation superstructures containing thermally influenced media, said sandwich frame performing an insulating function and being used as an assembly frame for the corresponding installation superstructure.
Description
Multifunctional sandwich frame for installation superstructures containing thermally influenced media The invention relates to a multifunctional sandwich frame for installation superstructures containing thermally influenced media, said sandwich frame performing an insulating function and being used as assembly frame for the corresponding installation superstructure.
Solutions are provided that are in particular based on that, e.g., distributor installations, compact district-heating installations and control installations are mounted on adequate gratings and/or steel structures, said steel structures being also helpful for fixed assembly at the location, depending on their design. All medium lines to be insulated are subsequently and separately covered in, e.g., PUR
foam as insulating material.
The essential disadvantage of the large variety of known technical solutions is that a separate, structural configuration in the form of gratings, steel structures, etc. is required and simultaneously insulating material is installed at said installation superstructures. Prior art involves in particular use of a PUR insulating body consisting of thermostable, CFC-free, closed-cell hard cellular material. All pre-forms are built up of two semi-shells that fully enclose valves and pipework to be insulated. The semi-shells are fixed during assembly by means of self-locking stainless steel spring-type clasps as separable junction.
Said superstructure insulation is in particular documented in a company brochure of Petrick & Wolf Energietechnik GmbH & Co. KG wherein furthermore a structural steel frame is provided to which installation superstructures, such as pipes, heat exchangers, valves, control valves, shut-off valves etc., are mounted and separately fitted with the already mentioned pipe insulating body as insulation material. The specific manufacture of the assembly rack or the respective insulating body entails in the described technical solution considerable manufacturing costs, which costs being in a relatively unfavourable relation to other cost components, such as pumps, valves and pipe material.
The present invention bases on the task of finding a multifunctional sandwich frame for installation superstructures containing thermally influenced media and overcoming prior art disadvantages to establish a frame functionality that realises the opportunity of thermal insulation and contains further advantageous, functional properties, such as assembly capacity, modular system and mechanical strength.
Aim of this invention is to enable a multifunctional sandwich frame for installation superstructures containing thermally influenced media, according to patent claim 1 and its sub-claims.
To this end a sandwich frame was developed that consists of several sandwich slabs made of plastics, in particular of hard polyurethane (PUR) cellular material. Thermally influenced and/or installation superstructures are enclosed by said sandwich frame.
The respective sandwich slab is a pre-fabricated shape, adapted to the size of a given installation superstructure, such as a pipe. Said pre-fabricated shapes shall achieve that enclosure by the sandwich frame provides adequate insulation of enclosed installation modules through said sandwich slabs.
The given sandwich frame is in particular composed of two sandwich slabs that enclose the respective sub-assemblies by said pre-fabricated shapes. Furthermore it is possible to arrange further interior sandwich slabs between the outer sandwich slabs to achieve that lateral junctions or other types of mounting of superstructures or installation components are thermally enclose and thus provide stability of the entire installation. The given sandwich slabs, such as the top and bottom sandwich slabs, are fitted with embedded stabilisation sheets at an outer edge, such are preferably cast in at the exterior surface. Said stabilisation sheets are provided with specified bore holes or holding slots, thus pre-defining a sandwich slab for assembly of an installation superstructure or for final assembly at a defined position.
Stabilisation sheets are arranged at the respective outer edge of a sandwich slab laterally to the assembly direction of interior installation superstructures, such as pipes, slabs or other sub-assemblies. Said lateral assembly of stabilisation sheets thus provides a structural configuration that ensures stability of the sandwich frame because the interior installations components in longitudinal direction already establish a stability factor. A
given sandwich slab is already provided with passage openings which allow for arrangement of constructional superstructure elements outside of the sandwich slab so as to attain the forms and sizes of the given sandwich slab remain in the smallest possible dimension to achieve assembly capacity. In addition it is advantageous that the installation superstructures are arranged outside of the sandwich slab to ensure access to any sub-assemblies.
Essential advantages of the sandwich frame, consisting of two sandwich slabs or further interior sandwich slabs within said two sandwich slabs to enclose sub-assemblies, respectively, are given by provision of optimal insulation and stability capacity to the sandwich slabs by cellular PUR
material and its properties. The used cellular PUR
material is absolutely water-repellent and thus has proven very well as insulating material in practice.
Cellular PUR insulating material is a thermostable, CFC-free, closed-cell hard cellular material.
Further technical parameters of the hard cellular material are as follows:
Specific volume weight 90 kg/m3 Compression strength 0.43 N/mm3 Application temperature up to 130 C
Thermal conductivity 0.031 W/mK
Building material class B 2 Further, said sandwich frame has best insulating properties, and high stability is achieved by installation of stabilisation sheets at the outer edges of the respective sandwich slab. Another advantage is that use of said sandwich frame provides sound and vibration damping at the given installations. The structural configuration of said sandwich frame also enables realisation of several installation components by means of a so-called modular system. In particular sizes, forms and scopes of the sandwich frame and the content of several other slabs can be constructively executed and adapted to a respective installation component. The modular principle also allows for combining, beside said installations, also additional installations by means of another sandwich frame and thus realise the essential advantages of the inventive solution also for additional devices and modules.
The embedded stabilisation sheets, in particular in the rear wall of the sandwich frame, in the sandwich slab, are advantageously provided with bore holes or slots that enable realisation of an installation without much technical, e.g., by wall mounting.
A practical example demonstrates the superstructure and application of said sandwich slab in practice, illustrated in the following figures:
Figure 1: Configuration of sandwich slab Figure 2: Application of sandwich slab Figure 3: Application of sandwich slab Figure 4: Application of sandwich slab Figure 5: Additional sandwich slab Figure 6: Assembly of sandwich slabs Figure 7: 3D view of Sandwich slab Figure 7a: Top view of sandwich slab Figure 7b: Side view of sandwich slab Figure 7c: Side view of sandwich slab Figure 8: Circuit diagram of installation superstructure as compact district-heating station Application and configuration of said sandwich slab, especially for a specific installation superstructure are described below for a compact district-heating station for indirect connection to a district-heating system.
Installation superstructures 13 as compact district-heating stations are fabricated as compact units and contain all necessary sub-assemblies for connection of building systems to the local district-heating network. Design and fabrication of installation superstructures as compact district-heating stations comply with all valid regulations and codes for district-heating connections, in particular:
- applicable DIN and VDE regulations;
- heating Installation Ordinance;
- Pressure Vessel Ordinance;
- AGFW codes, and - Technical connection conditions of the district-heating utility company.
Depending on their throughput capacities, the stations are fabricated as wall-mounting or wall erection models as described in the inventive solution of sandwich frame 11. Both mounting variants provide for front accessibility of all components and controls, since sandwich slab 2 is fitted with passage openings 8 and 8' onto which the components and controls are built outside of sandwich frame 11.
As a standard a compact district-heating station essentially contains the following functional groups:
- District-heating transfer section - Heat exchanger with pilot control and safety devices - One or more secondary heating circuits - Water heating - Control equipment.
Control of the compact district-heating station that is installed as installation superstructure 13 on the sandwich frame 11 is performed by several control circuits that operate differently depending on the equipment level of the station. Control of the secondary -side outlet temperature of heating medium from the heat exchanger 48 is carried out in the pilot control circuit by means of a control valve 68.
For controlling the heating circuit, the heating circuit feed flow temperature is controlled demand-dependant as a function of outside temperature, room temperature or a constant specified value. Control of water heating allows for controlling several water heating systems (e.g. types: BS / BTL / BTD / BTLRA /
BTLDR). The transfer section with pilot control circuit is the interface between district-heating network and domestic system. The hydraulic configuration depends on the technical connection conditions of the district-heating utility company and technical requirements due to existing district-heating network parameters. Sub-assemblies of the pilot control circuit are arranged downstream of the transfer section. Figure 8 shows the schematic configuration of this sub-assembly. Control of secondary feed flow temperature is performed by targeted control of volume flow in the primary circuit (opening or shutting of motor control valve 91/72) . The pilot control valve 91/72 is controlled through the temperature sensor in secondary feed flow 75.2 according to the value of secondary feed flow temperature. Depending on the actuating drive used, there is either continuous selection or selection with three-level action. The DDC controller 70 continually compares the secondary feed flow actual value with the setpoint value and calculates the required manipulated variable for driving valve 91/72. The setpoint value is calculated by the controller from `Temperature requirements of secondary control circuits' and further parameters.
The highest heat demand is the dominating command variable for the pilot control circuit. The operating regimes of the pilot control circuit described below are possible options. The pilot control circuit shall be operated with a freely selectable excess temperature, i.e. the pilot control circuit provides a specified secondary excess temperature. Such is, e.g., necessary where long line sections between heat exchanger 48 and consumer cause heat losses. The pilot control circuit can be optionally operated to a freely selectable constant setpoint value or variably as a function of outside temperature through the outside temperature sensor 60. The temperature sensor primary return flow 75.1 is provided to realise the additional function `Temperature limiting of primary return flow'. Over-exceeding of the maximal admissible return flow temperature upon reaching a freely selectable return flow temperature is prevented by shutting of pilot control valve 91/72.
This function should only be activated when the heating system is well-balanced and the temperature spread rated for dimensioning of the station is achieved. Otherwise buildings may be undersupplied due to insufficient secondary feed flow temperatures.
Figure 8 shows the connection diagram of a compact district-heating station as a practical example of an installation superstructure 13. The technical functionality is illustrated in Figure 8. A DDC
controller 70 is used to control the compact district-heating station. Input variables are provided through the temperature sensor secondary return flow 75.3 as well as the temperature sensor secondary feed flow 75.2 and the temperature sensor primary return flow 75.1 as well as through an outside temperature sensor 60. An actuating signal on the stop valve 91/72 is executed as output signal.
The primary feed flow is furthermore fitted with a dirt filter 59, with another dirt filter 59 being installed in the secondary feed flow. Thermometers 79 in the return flow and in the secondary-side feed flow indicate feed and return flow temperatures on the secondary side. A heat quantity counter 96 is arranged in the primary-side return flow. The plate-type heat exchanger 48 is a heat exchanger of a known design. dirt filter s 59 in the primary-side feed flow and the secondary-side feed flow are of a novel design for pipe systems. These dirt filters s 59 can also be installed into individual heating circuits.
The distinguishing features of said novel filter is that it consists of a filter housing that enforces a filter flow of 90 , within which filter flow a filter sieve is arranged that s fitted with a bolted union in longitudinal direction for replacement of the filter sieve. Thus it is possible to replace the filter sieve in this installation superstructure 13 of the compact district-heating station from the front (see also Reference character 59 - Figure 3). A
further advance of the insert in the novel dirt filter is that the 90 execution of the filter system allows for a considerable saving in piping because known filters (dirt filter or dirt traps) do not have said throughput flow of 90 . Thus it was achieved that especially in this specific installation superstructure 13 the arrangement of the two dirt filters 59 permits an easy and clearly arranged configuration of installation superstructures 13 in the form of pipework with individual controls and components according to Figure 8.
In particular Figure 3 illustrates why this insert in dirt filters 59 can be deemed an essential advantage because said dirt filters 59 and the angle of 90 from the sandwich frame 11 allow for an immediate conveyance at a right angle via the installation superstructures 13 in the form of pipes.
Figure 1 shows the configuration of a sandwich frame 11 of sandwich slab 1 and sandwich slab 2. Said sandwich slabs 1 and 2 are made of plastics, in particular of cellular PUR material. The used cellular PUR material is absolutely water-repellent and hence best suited as insulating material. The cellular PUR insulating material is made of thermostable, CFC-free, closed-cell hard cellular material. These properties ensure optimal insulating and stabilising capacities of the sandwich slabs.
It is obvious that there are respective shapes 12 in this practical example are given in particular for pipework. The stabilisation sheets 3 and 3' are cast into sandwich slab 1 at the outer edge laterally to the assembly direction of installation superstructures 13 at the top edge. The inserted bore holes 6 or holding slots 7 in stabilisation sheet 3 and 3' are arranged so that a wall-mounting or wall erection location can be fixed by these provided bore holes 6 and holding slots 7. In addition, it is possible to arrange further components via said bore holes 6 and holding slots 7. Insertion of said stabilisation sheets 3 and 3' enhances the stability of sandwich slab 1 because in this practical example pipes 9 or other pipes are arranged in the form of installation superstructures 13 in the pre-fabricated shapes 12. Stabilisation sheets 4 and 4' are also cast in at the outer edge at sandwich slab 2.
Sandwich slab 2 is further equipped with passage openings 8 and 8' to execute with the enclosed installation superstructures 13 or thermally influenced pipes 9 a connection via said passage openings 8 and 8' and arrange the necessary controls and superstructure elements according to Figure 3 and Figure 2, respectively.
Figure 2 is a drawing that illustrates the application of a sandwich frame 11. A thermally influenced pipe 9 is led within sandwich frame 11.
Passage openings 8 and 8' in sandwich slab 2 are used to arrange respective components or pipes at the thermally influenced pipes 9 through a given welded connection. Sandwich slab 1 and sandwich slab 2 are laterally clamped together by means of brackets 5 and thus form a closed component. It is also possible t join the two sandwich slabs 1 and 2 by means of a bolted union, clamp or other detachable connections.
The novel sandwich frame 11 achieves simultaneously stability and insulation of thermally influenced pipes 9.
Figure 3 shows the complete combination of the sandwich frame 11 with respective installation superstructures 13 and instruments, controls and components shown in Figure 8 for a compact district-heating station.
Figure 4 is a side view of the sandwich frame 11 with its sandwich slabs 1 and 2 on which the respective installation superstructures 13 of the controls and components are arranged.
As shown in the last-mentioned figures, the sandwich frame 11 provides a base rack that functions as insulation, e.g. of thermally influenced pipes 9, ensures the assembly capacity of the compact district-heating station in several configuration variants by means of the inserted stabilisation sheets 3 in sandwich slab 1 and has the already described advantages of sandwich frame 11.
Figure 6 shows a sandwich frame 11 without any installation superstructures 13. As can be seen in Figure 6, it is possible, depending on a given application case and installation superstructure, to fabricate a respective sandwich frame. The pre-fabricated shapes 12 serve as bases for insertion of components, etc. By tightening the brackets 5, sandwich slabs 1 and 2 are forming a base rack base rack onto which further installation components 13 can be mounted via provided passage openings 8 and 8' in sandwich slab 2.
Figures 7, 7a, 7b and 7c show sandwich slab 1. Figure 7 is a three-dimensional view of sandwich slab 7 showing that the stabilisation sheets 3 and 3' are cast in at the top edge of sandwich slab 1. Further, there are bore holes 6 and holding slots 7 provided over the entire length of stabilisation sheets 3 and 3' to allow for mounting of sandwich slab 1 over the whole sandwich frame 11.
Figure 7a is a top view of said sandwich slab 1.
Figures 7b and 7c provide side views of sandwich slab 1. Essential is always that stabilisation sheets 3 and 3' are arranged at the outer edge laterally the pre-fabricated shapes lines 12. It is emphasized again, that said stabilisation sheets 3 and 3' are cast into cellular PUR material at the top edge.
Figure 5 shows another practical variant of the sandwich frame 11. It is possible to arrange a further sandwich slab 14 between sandwich slab 1 and a pre-fabricated sandwich slab 2. Installation superstructures 13 in the form of controls and components can be mounted on top of said sandwich slab 14, such as laterally to the pre-fabricated shape 12 for thermally influenced pipes 9 as shown in this practical example.
Hence, it is basically possible to execute several sandwich slabs 1 and 2 on top of each other as one structural unit rack. The underlying principle of this application example and the inventive solution is the execution of a sandwich frame 11 by embedding respective installation superstructures 13 that is preferably made of hard PUR material. This frame allows as an advantage carrying out of a transport, insulating proofing against sound and noise, enhanced mechanical strength, low-cost construction of a base frame and housing component for an installation superstructure 13 and good stackability for transport.
Reference characters 1 Sandwich slab 2 Sandwich slab 3 Stabilisation sheet 3' Stabilisation sheet 4 Stabilisation sheet 4' Stabilisation sheet Bracket 6 Bore hole 7 Holding slots 8 Passage opening 8' Passage opening 9 Thermally influenced pipe 11 Sandwich frame 12 Pre-fabricated shapes 13 Installation superstructures 14 Sandwich slab 48 Heat exchanger 59 Dirt filter 60 Outside temperature sensor 68 Control valve 70 DDC controller 75.1 Temperature sensor primary return flow 75.2 Temperature sensor secondary feed flow 75.3 Temperature sensor secondary return flow 79 Thermometer 91/72 Motor control valve (pilot control valve) 96 Heat quantity counter
Solutions are provided that are in particular based on that, e.g., distributor installations, compact district-heating installations and control installations are mounted on adequate gratings and/or steel structures, said steel structures being also helpful for fixed assembly at the location, depending on their design. All medium lines to be insulated are subsequently and separately covered in, e.g., PUR
foam as insulating material.
The essential disadvantage of the large variety of known technical solutions is that a separate, structural configuration in the form of gratings, steel structures, etc. is required and simultaneously insulating material is installed at said installation superstructures. Prior art involves in particular use of a PUR insulating body consisting of thermostable, CFC-free, closed-cell hard cellular material. All pre-forms are built up of two semi-shells that fully enclose valves and pipework to be insulated. The semi-shells are fixed during assembly by means of self-locking stainless steel spring-type clasps as separable junction.
Said superstructure insulation is in particular documented in a company brochure of Petrick & Wolf Energietechnik GmbH & Co. KG wherein furthermore a structural steel frame is provided to which installation superstructures, such as pipes, heat exchangers, valves, control valves, shut-off valves etc., are mounted and separately fitted with the already mentioned pipe insulating body as insulation material. The specific manufacture of the assembly rack or the respective insulating body entails in the described technical solution considerable manufacturing costs, which costs being in a relatively unfavourable relation to other cost components, such as pumps, valves and pipe material.
The present invention bases on the task of finding a multifunctional sandwich frame for installation superstructures containing thermally influenced media and overcoming prior art disadvantages to establish a frame functionality that realises the opportunity of thermal insulation and contains further advantageous, functional properties, such as assembly capacity, modular system and mechanical strength.
Aim of this invention is to enable a multifunctional sandwich frame for installation superstructures containing thermally influenced media, according to patent claim 1 and its sub-claims.
To this end a sandwich frame was developed that consists of several sandwich slabs made of plastics, in particular of hard polyurethane (PUR) cellular material. Thermally influenced and/or installation superstructures are enclosed by said sandwich frame.
The respective sandwich slab is a pre-fabricated shape, adapted to the size of a given installation superstructure, such as a pipe. Said pre-fabricated shapes shall achieve that enclosure by the sandwich frame provides adequate insulation of enclosed installation modules through said sandwich slabs.
The given sandwich frame is in particular composed of two sandwich slabs that enclose the respective sub-assemblies by said pre-fabricated shapes. Furthermore it is possible to arrange further interior sandwich slabs between the outer sandwich slabs to achieve that lateral junctions or other types of mounting of superstructures or installation components are thermally enclose and thus provide stability of the entire installation. The given sandwich slabs, such as the top and bottom sandwich slabs, are fitted with embedded stabilisation sheets at an outer edge, such are preferably cast in at the exterior surface. Said stabilisation sheets are provided with specified bore holes or holding slots, thus pre-defining a sandwich slab for assembly of an installation superstructure or for final assembly at a defined position.
Stabilisation sheets are arranged at the respective outer edge of a sandwich slab laterally to the assembly direction of interior installation superstructures, such as pipes, slabs or other sub-assemblies. Said lateral assembly of stabilisation sheets thus provides a structural configuration that ensures stability of the sandwich frame because the interior installations components in longitudinal direction already establish a stability factor. A
given sandwich slab is already provided with passage openings which allow for arrangement of constructional superstructure elements outside of the sandwich slab so as to attain the forms and sizes of the given sandwich slab remain in the smallest possible dimension to achieve assembly capacity. In addition it is advantageous that the installation superstructures are arranged outside of the sandwich slab to ensure access to any sub-assemblies.
Essential advantages of the sandwich frame, consisting of two sandwich slabs or further interior sandwich slabs within said two sandwich slabs to enclose sub-assemblies, respectively, are given by provision of optimal insulation and stability capacity to the sandwich slabs by cellular PUR
material and its properties. The used cellular PUR
material is absolutely water-repellent and thus has proven very well as insulating material in practice.
Cellular PUR insulating material is a thermostable, CFC-free, closed-cell hard cellular material.
Further technical parameters of the hard cellular material are as follows:
Specific volume weight 90 kg/m3 Compression strength 0.43 N/mm3 Application temperature up to 130 C
Thermal conductivity 0.031 W/mK
Building material class B 2 Further, said sandwich frame has best insulating properties, and high stability is achieved by installation of stabilisation sheets at the outer edges of the respective sandwich slab. Another advantage is that use of said sandwich frame provides sound and vibration damping at the given installations. The structural configuration of said sandwich frame also enables realisation of several installation components by means of a so-called modular system. In particular sizes, forms and scopes of the sandwich frame and the content of several other slabs can be constructively executed and adapted to a respective installation component. The modular principle also allows for combining, beside said installations, also additional installations by means of another sandwich frame and thus realise the essential advantages of the inventive solution also for additional devices and modules.
The embedded stabilisation sheets, in particular in the rear wall of the sandwich frame, in the sandwich slab, are advantageously provided with bore holes or slots that enable realisation of an installation without much technical, e.g., by wall mounting.
A practical example demonstrates the superstructure and application of said sandwich slab in practice, illustrated in the following figures:
Figure 1: Configuration of sandwich slab Figure 2: Application of sandwich slab Figure 3: Application of sandwich slab Figure 4: Application of sandwich slab Figure 5: Additional sandwich slab Figure 6: Assembly of sandwich slabs Figure 7: 3D view of Sandwich slab Figure 7a: Top view of sandwich slab Figure 7b: Side view of sandwich slab Figure 7c: Side view of sandwich slab Figure 8: Circuit diagram of installation superstructure as compact district-heating station Application and configuration of said sandwich slab, especially for a specific installation superstructure are described below for a compact district-heating station for indirect connection to a district-heating system.
Installation superstructures 13 as compact district-heating stations are fabricated as compact units and contain all necessary sub-assemblies for connection of building systems to the local district-heating network. Design and fabrication of installation superstructures as compact district-heating stations comply with all valid regulations and codes for district-heating connections, in particular:
- applicable DIN and VDE regulations;
- heating Installation Ordinance;
- Pressure Vessel Ordinance;
- AGFW codes, and - Technical connection conditions of the district-heating utility company.
Depending on their throughput capacities, the stations are fabricated as wall-mounting or wall erection models as described in the inventive solution of sandwich frame 11. Both mounting variants provide for front accessibility of all components and controls, since sandwich slab 2 is fitted with passage openings 8 and 8' onto which the components and controls are built outside of sandwich frame 11.
As a standard a compact district-heating station essentially contains the following functional groups:
- District-heating transfer section - Heat exchanger with pilot control and safety devices - One or more secondary heating circuits - Water heating - Control equipment.
Control of the compact district-heating station that is installed as installation superstructure 13 on the sandwich frame 11 is performed by several control circuits that operate differently depending on the equipment level of the station. Control of the secondary -side outlet temperature of heating medium from the heat exchanger 48 is carried out in the pilot control circuit by means of a control valve 68.
For controlling the heating circuit, the heating circuit feed flow temperature is controlled demand-dependant as a function of outside temperature, room temperature or a constant specified value. Control of water heating allows for controlling several water heating systems (e.g. types: BS / BTL / BTD / BTLRA /
BTLDR). The transfer section with pilot control circuit is the interface between district-heating network and domestic system. The hydraulic configuration depends on the technical connection conditions of the district-heating utility company and technical requirements due to existing district-heating network parameters. Sub-assemblies of the pilot control circuit are arranged downstream of the transfer section. Figure 8 shows the schematic configuration of this sub-assembly. Control of secondary feed flow temperature is performed by targeted control of volume flow in the primary circuit (opening or shutting of motor control valve 91/72) . The pilot control valve 91/72 is controlled through the temperature sensor in secondary feed flow 75.2 according to the value of secondary feed flow temperature. Depending on the actuating drive used, there is either continuous selection or selection with three-level action. The DDC controller 70 continually compares the secondary feed flow actual value with the setpoint value and calculates the required manipulated variable for driving valve 91/72. The setpoint value is calculated by the controller from `Temperature requirements of secondary control circuits' and further parameters.
The highest heat demand is the dominating command variable for the pilot control circuit. The operating regimes of the pilot control circuit described below are possible options. The pilot control circuit shall be operated with a freely selectable excess temperature, i.e. the pilot control circuit provides a specified secondary excess temperature. Such is, e.g., necessary where long line sections between heat exchanger 48 and consumer cause heat losses. The pilot control circuit can be optionally operated to a freely selectable constant setpoint value or variably as a function of outside temperature through the outside temperature sensor 60. The temperature sensor primary return flow 75.1 is provided to realise the additional function `Temperature limiting of primary return flow'. Over-exceeding of the maximal admissible return flow temperature upon reaching a freely selectable return flow temperature is prevented by shutting of pilot control valve 91/72.
This function should only be activated when the heating system is well-balanced and the temperature spread rated for dimensioning of the station is achieved. Otherwise buildings may be undersupplied due to insufficient secondary feed flow temperatures.
Figure 8 shows the connection diagram of a compact district-heating station as a practical example of an installation superstructure 13. The technical functionality is illustrated in Figure 8. A DDC
controller 70 is used to control the compact district-heating station. Input variables are provided through the temperature sensor secondary return flow 75.3 as well as the temperature sensor secondary feed flow 75.2 and the temperature sensor primary return flow 75.1 as well as through an outside temperature sensor 60. An actuating signal on the stop valve 91/72 is executed as output signal.
The primary feed flow is furthermore fitted with a dirt filter 59, with another dirt filter 59 being installed in the secondary feed flow. Thermometers 79 in the return flow and in the secondary-side feed flow indicate feed and return flow temperatures on the secondary side. A heat quantity counter 96 is arranged in the primary-side return flow. The plate-type heat exchanger 48 is a heat exchanger of a known design. dirt filter s 59 in the primary-side feed flow and the secondary-side feed flow are of a novel design for pipe systems. These dirt filters s 59 can also be installed into individual heating circuits.
The distinguishing features of said novel filter is that it consists of a filter housing that enforces a filter flow of 90 , within which filter flow a filter sieve is arranged that s fitted with a bolted union in longitudinal direction for replacement of the filter sieve. Thus it is possible to replace the filter sieve in this installation superstructure 13 of the compact district-heating station from the front (see also Reference character 59 - Figure 3). A
further advance of the insert in the novel dirt filter is that the 90 execution of the filter system allows for a considerable saving in piping because known filters (dirt filter or dirt traps) do not have said throughput flow of 90 . Thus it was achieved that especially in this specific installation superstructure 13 the arrangement of the two dirt filters 59 permits an easy and clearly arranged configuration of installation superstructures 13 in the form of pipework with individual controls and components according to Figure 8.
In particular Figure 3 illustrates why this insert in dirt filters 59 can be deemed an essential advantage because said dirt filters 59 and the angle of 90 from the sandwich frame 11 allow for an immediate conveyance at a right angle via the installation superstructures 13 in the form of pipes.
Figure 1 shows the configuration of a sandwich frame 11 of sandwich slab 1 and sandwich slab 2. Said sandwich slabs 1 and 2 are made of plastics, in particular of cellular PUR material. The used cellular PUR material is absolutely water-repellent and hence best suited as insulating material. The cellular PUR insulating material is made of thermostable, CFC-free, closed-cell hard cellular material. These properties ensure optimal insulating and stabilising capacities of the sandwich slabs.
It is obvious that there are respective shapes 12 in this practical example are given in particular for pipework. The stabilisation sheets 3 and 3' are cast into sandwich slab 1 at the outer edge laterally to the assembly direction of installation superstructures 13 at the top edge. The inserted bore holes 6 or holding slots 7 in stabilisation sheet 3 and 3' are arranged so that a wall-mounting or wall erection location can be fixed by these provided bore holes 6 and holding slots 7. In addition, it is possible to arrange further components via said bore holes 6 and holding slots 7. Insertion of said stabilisation sheets 3 and 3' enhances the stability of sandwich slab 1 because in this practical example pipes 9 or other pipes are arranged in the form of installation superstructures 13 in the pre-fabricated shapes 12. Stabilisation sheets 4 and 4' are also cast in at the outer edge at sandwich slab 2.
Sandwich slab 2 is further equipped with passage openings 8 and 8' to execute with the enclosed installation superstructures 13 or thermally influenced pipes 9 a connection via said passage openings 8 and 8' and arrange the necessary controls and superstructure elements according to Figure 3 and Figure 2, respectively.
Figure 2 is a drawing that illustrates the application of a sandwich frame 11. A thermally influenced pipe 9 is led within sandwich frame 11.
Passage openings 8 and 8' in sandwich slab 2 are used to arrange respective components or pipes at the thermally influenced pipes 9 through a given welded connection. Sandwich slab 1 and sandwich slab 2 are laterally clamped together by means of brackets 5 and thus form a closed component. It is also possible t join the two sandwich slabs 1 and 2 by means of a bolted union, clamp or other detachable connections.
The novel sandwich frame 11 achieves simultaneously stability and insulation of thermally influenced pipes 9.
Figure 3 shows the complete combination of the sandwich frame 11 with respective installation superstructures 13 and instruments, controls and components shown in Figure 8 for a compact district-heating station.
Figure 4 is a side view of the sandwich frame 11 with its sandwich slabs 1 and 2 on which the respective installation superstructures 13 of the controls and components are arranged.
As shown in the last-mentioned figures, the sandwich frame 11 provides a base rack that functions as insulation, e.g. of thermally influenced pipes 9, ensures the assembly capacity of the compact district-heating station in several configuration variants by means of the inserted stabilisation sheets 3 in sandwich slab 1 and has the already described advantages of sandwich frame 11.
Figure 6 shows a sandwich frame 11 without any installation superstructures 13. As can be seen in Figure 6, it is possible, depending on a given application case and installation superstructure, to fabricate a respective sandwich frame. The pre-fabricated shapes 12 serve as bases for insertion of components, etc. By tightening the brackets 5, sandwich slabs 1 and 2 are forming a base rack base rack onto which further installation components 13 can be mounted via provided passage openings 8 and 8' in sandwich slab 2.
Figures 7, 7a, 7b and 7c show sandwich slab 1. Figure 7 is a three-dimensional view of sandwich slab 7 showing that the stabilisation sheets 3 and 3' are cast in at the top edge of sandwich slab 1. Further, there are bore holes 6 and holding slots 7 provided over the entire length of stabilisation sheets 3 and 3' to allow for mounting of sandwich slab 1 over the whole sandwich frame 11.
Figure 7a is a top view of said sandwich slab 1.
Figures 7b and 7c provide side views of sandwich slab 1. Essential is always that stabilisation sheets 3 and 3' are arranged at the outer edge laterally the pre-fabricated shapes lines 12. It is emphasized again, that said stabilisation sheets 3 and 3' are cast into cellular PUR material at the top edge.
Figure 5 shows another practical variant of the sandwich frame 11. It is possible to arrange a further sandwich slab 14 between sandwich slab 1 and a pre-fabricated sandwich slab 2. Installation superstructures 13 in the form of controls and components can be mounted on top of said sandwich slab 14, such as laterally to the pre-fabricated shape 12 for thermally influenced pipes 9 as shown in this practical example.
Hence, it is basically possible to execute several sandwich slabs 1 and 2 on top of each other as one structural unit rack. The underlying principle of this application example and the inventive solution is the execution of a sandwich frame 11 by embedding respective installation superstructures 13 that is preferably made of hard PUR material. This frame allows as an advantage carrying out of a transport, insulating proofing against sound and noise, enhanced mechanical strength, low-cost construction of a base frame and housing component for an installation superstructure 13 and good stackability for transport.
Reference characters 1 Sandwich slab 2 Sandwich slab 3 Stabilisation sheet 3' Stabilisation sheet 4 Stabilisation sheet 4' Stabilisation sheet Bracket 6 Bore hole 7 Holding slots 8 Passage opening 8' Passage opening 9 Thermally influenced pipe 11 Sandwich frame 12 Pre-fabricated shapes 13 Installation superstructures 14 Sandwich slab 48 Heat exchanger 59 Dirt filter 60 Outside temperature sensor 68 Control valve 70 DDC controller 75.1 Temperature sensor primary return flow 75.2 Temperature sensor secondary feed flow 75.3 Temperature sensor secondary return flow 79 Thermometer 91/72 Motor control valve (pilot control valve) 96 Heat quantity counter
Claims (9)
1. A multifunctional sandwich frame for an installation superstructure, wherein the sandwich frame comprises:
a plurality of sandwich plates composed of a plastic material, each of the plurality of sandwich plates being configured according to a size and shape of the installation superstructure and any thermally influenced media of the installation superstructure to be contained within the sandwich frame, the plurality of sandwich plates comprising outer sandwich plates of the sandwich frame that are fitted with cast-in stabilization sheets that face each other on an outside surface of the outer sandwich plates, the stabilization sheets contain fastening elements for assembly in order to enhance stability of the sandwich frame.
a plurality of sandwich plates composed of a plastic material, each of the plurality of sandwich plates being configured according to a size and shape of the installation superstructure and any thermally influenced media of the installation superstructure to be contained within the sandwich frame, the plurality of sandwich plates comprising outer sandwich plates of the sandwich frame that are fitted with cast-in stabilization sheets that face each other on an outside surface of the outer sandwich plates, the stabilization sheets contain fastening elements for assembly in order to enhance stability of the sandwich frame.
2. The multifunctional sandwich frame for an installation superstructure according to claim 1, wherein the fastening elements of the stabilization sheets comprise pre-drilled bores and holding slots, and wherein the stabilization sheets are mounted to an outer edge and the outside surface of the outer sandwich plates.
3. The multifunctional sandwich frame for an installation superstructure according to claim 1, wherein the stabilization sheets are arranged transverse to at least one of an assembly direction of the installation superstructure and the thermally influenced media.
4. The multifunctional sandwich frame for an installation superstructure according to claim 1, wherein the plurality of sandwich plates comprises a bottom sandwich plate and a top sandwich plate.
5. The multifunctional sandwich frame for an installation superstructure according to claim 1, wherein the stabilization sheets are joined by connection clamps.
6. The multifunctional sandwich frame for an installation superstructure according to claim 2, wherein the bores and the holding slots are arranged in the stabilization sheets to enable fastening as at least one of wall brackets and an isolated assembly.
7. The multifunctional sandwich frame for an installation superstructure according to claim 1, wherein each of the plurality of sandwich plates comprises defined pre-drilled shaping configured to fit a shape of components of the installation superstructure including the thermally influenced media to ensure an exact fit.
8. The multifunctional sandwich frame for an installation superstructure according to claim 4, wherein each of the plurality of sandwich plates contains passage openings to match existing building components of the installation superstructure.
9. The multifunctional sandwich frame for an installation superstructure according to claim 4, wherein the plurality of sandwich plates are connected laterally with connection clamps.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004043278.3 | 2004-09-08 | ||
| DE102004043278A DE102004043278B3 (en) | 2004-09-08 | 2004-09-08 | Multifunctional sandwich frame for system constructions, which contain thermally loaded media |
| PCT/EP2005/009665 WO2006027247A1 (en) | 2004-09-08 | 2005-09-08 | Multifunctional sandwich frame for installation superstructures containing thermally influenced media |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2590240A1 CA2590240A1 (en) | 2006-03-16 |
| CA2590240C true CA2590240C (en) | 2011-04-19 |
Family
ID=35431845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2590240A Expired - Fee Related CA2590240C (en) | 2004-09-08 | 2005-09-08 | Multifunctional sandwich frame for installation superstructures containing thermally influenced media |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1800066B1 (en) |
| AT (1) | ATE553338T1 (en) |
| CA (1) | CA2590240C (en) |
| DE (2) | DE102004043278B3 (en) |
| WO (1) | WO2006027247A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES1063701Y (en) * | 2006-09-13 | 2007-02-16 | Leako S A | BOX OF DISTRIBUTION, ACCOUNTING AND PRODUCTION OF SANITARY WATER AND HEATING |
| FR3001534B1 (en) * | 2013-01-31 | 2015-05-15 | Monsieur Hacine Grigahcine Au Nom Et Pour Le Compte De La Soc Fracotech En Cours De Formation | CONTROL BOX FOR A HEATING OR VENTILATION OR AIR CONDITIONING CONTROL SYSTEM AND SYSTEM EQUIPPED WITH SAID HOUSING |
| DE102013101026A1 (en) * | 2013-02-01 | 2014-08-07 | Nico Petrick | Arrangement for electronic control of water treatment via plate heat exchanger |
| CN109690197A (en) * | 2016-08-24 | 2019-04-26 | 戈登·卡拉威 | Rinse bypath system |
| DE102016222436B4 (en) | 2016-11-15 | 2018-09-06 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Sandwich component with distribution structure and vehicle |
| BE1024786B1 (en) * | 2017-03-24 | 2018-06-27 | Garcia Soto Marie-Julie | Sandwich panel for fluid manipulation |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE129800T1 (en) | 1992-03-19 | 1995-11-15 | Dumser Metallbau Gmbh | DEVICE FOR SUPPLYING A CIRCUIT OF A HEATING OR COOLING SYSTEM. |
| DE9308693U1 (en) | 1992-07-20 | 1993-08-05 | Geberit Ag, Jona, St.Gallen, Ch | |
| DE29714609U1 (en) | 1997-08-18 | 1997-10-30 | Schneider Manfred | Prefabricated assembly box for heating and pipeline construction as well as the sanitary area |
| DE29922052U1 (en) * | 1999-12-15 | 2000-04-06 | Hymer Ag Werk Polch | Sandwich connection |
-
2004
- 2004-09-08 DE DE102004043278A patent/DE102004043278B3/en not_active Expired - Fee Related
-
2005
- 2005-09-08 AT AT05787397T patent/ATE553338T1/en active
- 2005-09-08 DE DE202005021994U patent/DE202005021994U1/en not_active Expired - Lifetime
- 2005-09-08 EP EP05787397A patent/EP1800066B1/en not_active Revoked
- 2005-09-08 CA CA2590240A patent/CA2590240C/en not_active Expired - Fee Related
- 2005-09-08 WO PCT/EP2005/009665 patent/WO2006027247A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| ATE553338T1 (en) | 2012-04-15 |
| WO2006027247A1 (en) | 2006-03-16 |
| EP1800066B1 (en) | 2012-04-11 |
| EP1800066A1 (en) | 2007-06-27 |
| CA2590240A1 (en) | 2006-03-16 |
| DE102004043278B3 (en) | 2006-03-30 |
| DE202005021994U1 (en) | 2012-01-23 |
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Legal Events
| Date | Code | Title | Description |
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| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20180910 |