• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:AT510390A2
    申请号:T0098511
    申请日:2011-07-05
    公开日:2012-03-15
    发明作者:
    申请人:Baelz Gmbh Helmut；
    IPC主号:
    专利说明:

    • · * ·
    P43902 Heat supply system with several consumer circuits
    The invention relates to a heat supply system, which is used in particular for the heat supply of buildings.
    The heat supply system has at least a first load circuit and a second load circuit, which are connected to a heat source. The heat source provides the heat transfer fluid, such as hot water, in a discharge line for the consumer circuits.
    Such a heat supply system is described for example in DE 196 45 135 Al. There, a central supply line and a central return line are connected to a heat generator. The central flow line is further connected to a first flow line of a consumer operated with a higher flow temperature and a connected to a second flow line of a low flow temperature consumer circuit. A mixer is connected via a bypass line with the return line of the low-temperature consumer circuit. Downstream of the mixer, a circulation pump is arranged. The circulation pump conveys the heat transfer fluid to parallel heating elements of the low-temperature consumer circuit. Upstream of each radiator, a shut-off valve is arranged. The temperature of the heat transfer fluid can not be set independently of the heat consumers.
    On this basis, it can be regarded as an object of the present invention to provide an improved heat supply system. 1
    This object is achieved by a heat supply system with the features of claim 1. A heat transfer source provides heat transfer fluid, z. B. hot water on a discharge line ready. At this Ausgabieitung a first consumer circuit and a second load circuit is fluidly connected. The first consumer circuit has a first supply line, in particular directly connected to the discharge line, to which a heat consumer is connected via a mixer, such as a valve or a jet pump. Downstream, the consumer is fluidly connected via a first return line to a return connection of the heat carrier source.
    Furthermore, a second supply line of a second consumer circuit is connected to the discharge line. This fluidic connection is preferably carried out via a pipeline connection free of pressure-lossy fluidic elements, such as valves, mixers, or the like.
    In particular, the flow temperature in the second flow line is smaller than the flow temperature in the first flow line. The second consumer circuit has at least one and preferably a plurality of heating circuits. In each heating circuit at least one heat consumer is fluidly connected via a jet pump to the second supply line. The jet pump mixes from the at least one heat consumer flowing down cool heat transfer fluid to adjust the heating circuit temperature of the heat transfer fluid, which is supplied to the heat consumer. Downstream, the at least one heat consumer of a heating circuit is connected via a second return line to the return flow of the heat carrier source. An admixing line connects the second return line to the second supply line in the second consumer circuit. In this admixing line is seated a through-valve, which is preferably used as 2--2-
    Directional valve is designed. By means of this passage valve, the flow temperature in the second flow line is set to a desired second flow temperature. As a result, the second flow temperature differs only slightly by a maximum of a few degrees Celsius from the heating circuit temperature which the heat carrier fluid supplied to the heat consumer in the heating circuit should have. As a result, the mixing factor at the respective jet pumps in the second consumer circuit is much lower and thus a lower differential pressure between the drive and suction each jet pump is required. As a result, thus, the delivery height of the circulation pump in the second load circuit can be significantly reduced. The through-valve can be designed to be much smaller compared to a three-way control valve due to the smaller amount of water flowing through.
    It is advantageous if in each case a sensor for temperature measurement is provided in the first flow line and / or in the second flow line. The sensor signals can be supplied to a control unit for temperature control of the respective flow temperature.
    In a preferred embodiment, the two return lines of the two consumer circuits are fluidly connected to each other. The connection point is located downstream of the junction between the second return line and the Belmischleltung the second load circuit. In this case, the heat transfer fluid fed into the second supply line via the admixing line has the return temperature prevailing in the second return line.
    The mixer assigned to the heat consumers in the first consumer circuit is known, for example, as 3-way
    Mixing valve with circulating pump. Instead of the combination of 3-way mixing valve with circulation pump and a jet pump can be used. The mixer and / or the jet pump of each heating circuit can be controlled via a common control unit. As a result, a room temperature control or regulation can be set up centrally.
    In a further advantageous embodiment, the passage valve is adjustable. The valve setting can be done by the control unit.
    Advantageous embodiments of the invention will become apparent from the dependent claims and the appended description. The description is limited to essential features of the invention. The drawing is to be used as a supplement. The single FIGURE shows a block diagram of an embodiment of a heat supply system.
    A heat supply system 10 has a heat transfer source 11, the heat transfer fluid, for example according to hot water available at a discharge line 12. The heat carrier source 11 also has a central reflux 13. The heat supply system 10 is preferably used for heat supply of buildings. The heat carrier source may be, for example, a burner with a heat exchanger. Between the discharge line 12 and the return flow 13, a bypass line 24 with a control member 25 may be provided to increase the temperature of the cooled heat transfer fluid in the return flow 13 before flowing into the heat transfer medium 11, if necessary.
    A first consumer circuit 14 and a second consumer circuit 15 are connected to the heat carrier source 11. The first consumer circuit 14 has a first supply line 16 directly fluidically connected to the discharge line 12. The first flow line 16 is connected downstream to a 3-way mixer 17. A first input of the mixer 17 is shot to the first flow line 16. On the output side, the mixer 17 is fluidly connected via an inflow line 18 to a heat consumer 19, for example a radiator, of the first consumer circuit 14. Downstream of the heat consumer 19, a discharge line 20 is provided which is fluidically connected to a first return line 21. In the inflow line 18 is seated a first pump 22, which serves for the circulation of the heat transfer fluid in the first consumer circuit 14 (circulating pump).
    The discharge line 20 is also fluidly connected to a second input of the mixer 17. Depending on the heat dissipation requirement at the heat consumer 19, a desired proportion of already cooled heat transfer fluid from the down-flow line 20 to the inflowing from the first flow line 16 heat transfer fluid and be forwarded via the inflow line 18 to the heat consumer 19.
    In the first flow line 16 in the preferred embodiment, a first temperature sensor 23 for measuring the first flow temperature TVl is present.
    In a modification to the illustrated embodiment · more than one heat consumer 19 may be present in the first load circuit 14. In this case, each heat consumer 19 in particular a separate mixer 17 associated with circulating pump 22. Instead of the mixer 17 with each associated circulation pump 22 may alternatively also a -5-
    Jet pump are used, although in the drawing of the generalization because of the switching symbol for a mixing valve is illustrated.
    The second consumer circuit 15 has a second supply line 28, which is fluidically connected directly to the discharge line 12 without the interposition of pressure-loss-causing fluid control means. For the return flow of the heat transfer fluid, a second return line 29 is provided in the second load circuit 15, which is connected via a second pump 30 to the return flow 13 of the heat carrier source 11. Between the second flow line 28 and the second return line 29 a plurality of heating circuits 31 constructed identically according to the invention, each with a heat consumer 19 are connected in fluidic parallel. The heat consumer 19 is seated between an inflow line 18 and an outflow line 20. The outflow lines 20 of the heating circuits 31 are each fluidically connected to the second return line 29. The heating circuits 31 have no circulating pumps. The inflow lines 18 are fluidly connected upstream to the outlet of a respective jet pump 26. The suction inlet of the jet pump 26 is fluidly connected to the discharge line 20 and the drive input of the jet pump 26 is connected to the second supply line 28. In a preferred embodiment, six heating circuits 31 are connected in parallel.
    The jet pumps 26 are adjustable by electric motor. The respective motor M of the jet pump 26 is controlled by a control unit 32. In the exemplary embodiment, all jet pumps 26 are assigned a common control unit 32. The electrical control lines are dashed lines for better distinctness and the fluid lines shown by solid lines. -6- * I «m •» * · · «♦ ·« · · · · · «« · «
    A second temperature sensor 33 is arranged in the second flow line 28 and measures the second flow temperature TV2. The sensor signals of the temperature sensors 23, 33 are supplied in the embodiment of the control unit for controlling the second flow temperature TV2. In order to influence the first flow temperature TV1, the control unit 32 can optionally also control the heat carrier source 11.
    The second flow temperature TV2 is influenced via a through-valve 36, which is arranged in an admixing line 37. The admixing line 37 fluidly connects the second return line 29 to the second supply line 28.
    The heat supply system 10 operates as follows:
    The heat carrier source 11 provides at the discharge line 12, a heat transfer fluid available whose temperature corresponds to the first flow temperature TV1, for example about 90 ° C. In the first return line 21 after the heat consumer 19 of the first load circuit 14, the first return temperature TRI is about 20 ° C less than the first flow temperature TVl and in the embodiment therefore about 10 ° C.
    The second consumer circuit 15 operates at a lower flow temperature than the first consumer circuit 14. In the exemplary embodiment, the second load circuit 15 serves as underfloor heating, so that its heat consumer 19 represent, for example, heating coils of a floor heating. The setpoint for the second flow temperature TV2 is about 20 to 40 ° C less than the setpoint of the first flow temperature TVl. To achieve this, the through valve 36, which is preferably designed as a 2-way valve -7-, set so that the desired temperature by mixing the heat transfer fluid from the second return line 29 and the discharge line 12 in the second supply line 28 results. The second flow temperature TV2 is for example about 50 ° C. The temperature of the heat fluid downstream of the heat consumer 19 of the second load circuit 15 is about 20 ° C less than the second flow temperature TV2. In the embodiment, therefore, there is a second return temperature TR2 in the second return line 29 of about 30 ° C. About the passage valve · 36 is therefore approximately half of the flowing into the second flow line 28 volumetric flow through the back in the second return line 29 heat transfer fluid fed. The other half of the volume flow in the first flow line 28 comes from the discharge line 12 of the heat carrier source 11. If the second flow temperature TV2 differs from the predetermined setpoint, the control unit 32 can adjust the through-valve 36 accordingly in the preferred embodiment.
    The temperature difference between the second flow temperature TV2 and the heating circuit temperature TH of the heat carrier 19 in the heating circuit 31 supplied heat transfer fluid is very small, for example in the range of 0 ° C to 3 ° C. This results in the jet pumps 26, a small mixing factor and thus a low differential pressure demand between the drive and suction. This differential pressure must be provided by the second pump 30. Due to the small mixing factor, a lower pumping capacity of the second pump 30 is sufficient. Nevertheless, the temperature in all heating circuits 31 can be regulated separately by the jet pumps 26.
    The invention relates to a heat supply system 10 having a first consumer circuit 14 and a second consumer circuit 14.
    M * * * # * «* #» • «* · · • t« IM • * V · »» * kt I · · «» · • * «1« «• * I · · • l *%» i
    Consumer circuit 15. Both consumer circuits 14, 15 are operated with different flow temperatures TV1, TV2 in their respective flow line 16 and 28 respectively. Both flow lines 16, 28 are directly fluidly connected to a discharge line 12 of a heat transfer medium 11. Between the second return line 29 and the second feed line 28 of the second load circuit, a through valve 36 is interposed, which is designed as a 2-way valve. It mixes the flowing into the second flow line 28 heat transfer fluid to the heat transfer medium 11 back flowing, cooler heat transfer fluid to reduce the second flow temperature TV2 in the second flow line 28. The second consumer circuit contains a plurality of heating circuits 31 each having a jet pump 26 and a heat consumer 19. The Heizreistemperartur TH at the output of the jet pump 26 can be controlled separately in each heating circuit 31. Due to the reduced second pre-flow temperature TV2, the mixing factor of the jet pump 26 and thus also the pressure difference between the blowing inlet and the suction inlet of the jet pump are low. Accordingly small, the pump power of a pump 30 can be selected in the second load circuit 15, which must generate this pressure difference. -9-
    REFERENCE NUMBER: 10 heat supply system 11 heat carrier source 12 discharge line 13 reflux 14 first consumer circuit 15 second consumer circuit 16 first supply line 17 mixing valve 18 inflow 19 heat consumer 20 outflow line 21 first return line 22 first pump 23 first temperature sensor 24 bypass line 25 control member 26 jet pump 28 second flow line 29 second return line 30 second Pump 31 Heating circuit 32 Control unit 33 Second temperature sensor 36 Through valve 37 Admixing line M Motor TH Heating circuit temperature TV1 First flow temperature TV2 Second flow temperature -10- * * * * «« * * * # • · * * * * ♦ ♦ TRI first return temperature TR2 second return temperature -11-
    权利要求:
    Claims (11)
    [1]


    P43902 Claims: 1. Heat supply system, in particular for heat supply of buildings, with a heat carrier source (11), which provides the heat transfer fluid to a discharge line (12), with a first consumer circuit (14) having at least one heat consumer (19), the upstream is connected via a mixer (17) to a first supply line (16) which is fluidically connected to the discharge line (12) and which is connected downstream to a first return line (21), to a second consumer circuit (15) which comprises at least one heating circuit (31 ) having a jet pump (26) and a heat consumer (19), the heating circuit (31) being connected upstream to a second flow line (28) fluidically connected directly to the discharge line (12) and downstream to a second return line (29 ) is connected, and with a passage valve (36) which sits in an admixing line (37), the second Rüc Klaufleitung (29) fluidly connects to the second flow line (28).
    [2]
    2. Heat supply system according to claim 1, characterized in that the first flow temperature (TV1) in the first flow line (16) is greater than the second flow temperature (TV2) in the second flow line (28). -12-
    [3]
    3. Heat supply system according to claim 1, characterized in that the first flow temperature (TV1) in the first flow line (16) and / or the second flow temperature (TV2) in the second flow line ( 28) are measured by a respective sensor (23, 33) and the sensor signals are transmitted to a control unit (32).
    [4]
    4. Heat supply system according to claim 1, characterized in that the two return lines (21, 29) are fluidically interconnected.
    [5]
    5. Heat supply system according to claim 4, characterized in that the connection point between the admixing line (37) and the second return line (29) upstream of the junction of the two return lines (21, 29} is located.
    [6]
    6. Heat supply system according to claim 1, characterized in that the mixer (17) is designed as a 3-way mixing valve, each with associated circulating pump (22).
    [7]
    7. Heat supply system according to claim 1, characterized in that the first consumer circuit pumpless and the mixer (17) is designed as a jet pump.
    [8]
    8. Heat supply system according to claim 1, characterized in that the mixer (17) and / or the jet pump (26) are controlled by a control unit (32). -13- * · · I * * · · »· · • ι» 4 · I
    [9]
    9. Heat supply system according to claim 1, characterized in that the passage valve (36) is adjustable.
    [10]
    10. Heat supply system according to claim 9, characterized in that the through valve {36} is controlled by a control unit (32).
    [11]
    11. Heat supply system according to claim 1, characterized in that the through valve (36) is designed as a 2-way valve. -14-
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    同族专利:
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    FR2964179B1|2016-02-12|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    AT404075B|1995-10-30|1998-08-25|Vaillant Gmbh|METHOD FOR CONTROLLING A HEATING SYSTEM|
    DE10226870B4|2002-06-12|2004-05-13|MSR-Service für HKS-Anlagen Öl- und Gasbrenner GmbH|House connection station for district heating|
    DE102008057908A1|2008-11-18|2010-05-20|Swm Services Gmbh|Heat transfer station with cascade|
    EP2354677B1|2010-02-03|2015-08-19|GEWOFAG Gebäude Service GmbH|Use of heat from the district heating return|
    DE102010019727B4|2010-05-07|2021-05-06|Ludwig Langer|Process and transfer station for the transfer of heat|RU2485408C1|2011-12-21|2013-06-20|Владимир Львович Якимов|Method to provide heating load in systems of centralised heat supply|
    CN103982697B|2014-06-05|2015-06-03|山东鹏鹞水暖设备有限公司|Building cold and heat direct supply system and blocking device|
    EP3037704B1|2014-12-22|2018-05-23|Grundfos Management A/S|Mixing valve|
    DE102015009048B3|2015-07-13|2016-08-18|Kuka Roboter Gmbh|Controlling a compliant controlled robot|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102010037227A|DE102010037227A1|2010-08-30|2010-08-30|Heat supply system for building, comprises heat transfer source, which provides heat transfer to discharge line, load circuit and heat consumer appliance|
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