• 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:
    The invention relates to a method for operating a heating system, wherein with a heat generator (1) a heat transfer medium is heated to a flow temperature value, wherein the heat from the heat generator (1) heated heat transfer medium via a flow line (2) is fed to a heat storage (3), wherein the in the heat storage (3) stored heat transfer medium via a return line (4) to the heat generator (1) is returned. According to the invention it is provided that for conveying the heat transfer medium through the supply and return line (2, 4) a power adjustable pump (5) is used, that the flow temperature value of the heat transfer medium is detected and that the power of the pump (5) in dependence is controlled the detected flow temperature value of the heat transfer medium.
    公开号:AT515678A4
    申请号:T50603/2014
    申请日:2014-09-01
    公开日:2015-11-15
    发明作者:
    申请人:Viessmann Werke Kg；
    IPC主号:
    专利说明:

    The invention relates to a method for operating a heating system according to the preamble of patent claim 1.
    A method for operating a heating system of the type mentioned is known per se, so that in this regard requires no special documentary proof. In this, a heat transfer medium (heating circuit water) is heated to a flow temperature value during operation of the system with a heat generator, wherein the heat carrier heated by the heat transfer medium supplied via a feed line to a heat storage and stored in the heat storage heat transfer medium is returned via a return line to the heat generator. The promotion of the heat transfer medium by means of a typical three-stage switchable pump. Furthermore, in this known solution to the return line a return temperature value of the heat transfer medium is detected, which is then used to control efficiency losses and loss of comfort causing, positioned between the flow and the return line to a bypass, thermostatic bypass valve.
    The invention has for its object to improve a method for operating a heating system of the type mentioned. In particular, a more efficient method is to be provided in which the actual output of the heat generator is always optimally adapted to the needs of the operator or the user of the heating system.
    This object is achieved by a method for operating a heating system of the type mentioned by the features listed in the characterizing part of patent claim 1.
    According to the invention, it is thus provided that for promoting the heat transfer medium, in particular by the supply and return line but also by the heat generator and the heat storage a power adjustable pump is used, that the flow temperature value of the heat transfer medium is detected and that the power of the pump depending on the detected flow temperature value of the heat transfer medium is controlled.
    In other words, the method according to the invention is characterized in that in the control of the heating system or the power of the speed-controlled, so-called high-efficiency pump, in particular the flow temperature value of the heat transfer medium (or of the heating circuit water) detected on the supply line or in the heat generator is taken into account. which is not the case with the aforementioned prior art.
    Other advantageous developments of the method according to the invention will become apparent from the dependent claims.
    For the sake of completeness, reference is made to DE 10 2008 028 375 A1. There, a heat transfer medium is circulated by means of a power-adjustable pump between a heat generator and a transfer component (a heat or cold consumers and thus in particular no heat storage), wherein the power of the pump is controlled in dependence on temperature difference values.
    The inventive method including its advantageous developments according to the dependent claims will be explained in more detail with reference to the drawing of a preferred embodiment.
    It shows
    Figure 1 schematically based on a circuit diagram required for the realization of the method according to the invention heating system with heat generator and heat storage.
    The heating system shown in Figure 1 for carrying out the method according to the invention consists in a known way first of all from a heat generator 1 for heating a funded with a pump 5 heat transfer medium (heating water) and from a connected via a pre- and a return line 4 with the heat generator 1 heat storage 3. In such a heating system, in terms of process, a heat transfer medium with a heat generator 1 is heated to a flow temperature value. In addition, the heat transfer medium heated by the heat generator 1 is supplied via a supply line 2 a heat storage 3 and stored in the lower part of the heat accumulator 3, colder heat transfer medium via a return line 4 to the heat generator 1. In this case, the feed line 2 is arranged in each case at an upper end and the return line 4 in each case at a lower end of the heat generator 1 and the heat accumulator 3 or buffer storage designed as a layer accumulator.
    Essential for the inventive method is now that for conveying the heat transfer medium in particular by the supply and return line 2, 4 a power-adjustable pump (a so-called high-efficiency pump) 5 is used, that the flow temperature of the heat transfer medium is detected and that the power of the pump. 5 is regulated in dependence on the detected flow temperature value of the heat transfer medium. A possible position of the temperature sensor for detecting the temperature value at the heat generator 1 is indicated in Figure 1 top left with the help of the small black dot. However, the detection of the flow temperature value can also take place, which is preferred, in the heat generator itself.
    Expressed objectively, the heating system is characterized by the fact that this bypass-free and preferably arranged on the return line 4 pump 5 is designed as a power-adjustable pump, d. H. the power of the pump 5 can be adapted to the currently determined operating conditions, for example by setting the desired speed in many small steps. A hydraulic short circuit via a supply and return line 2, 4 connecting bypass ent falls in the inventive solution. In addition, with a volumetric flow sensor 9 provided on the supply line 2 and return line 4, it is possible to obtain a relation between the values of " power of the pump ", " pump speed " and " volumetric flow " set up.
    The invention arose in the context of the development of a new solid fuel boiler with a modulating burner for burning wood, in particular of so-called pellets. The inventive method is particularly suitable for this application, but is not limited thereto.
    Furthermore, it is preferably provided that heat storage side, a further flow temperature value of the heat transfer medium is detected and that the power of the pump 5 is also regulated in dependence on this further flow temperature value of the heat transfer medium. A possible position of the temperature sensor for detecting the further flow temperature value is identified in FIG. 1 at the top right with the aid of the small black dot. However, the detection of the further flow temperature value can also, what is preferred, take place in the heat storage itself.
    In order to quickly achieve optimum operating conditions of the heating system, it is further provided that the power of the pump 5 is controlled within a predefined, low temperature range of the heat generator 1 in dependence on the flow temperature value (at the heat generator 1).
    In order to achieve an increase in efficiency with low heat demand while simultaneously charging the heat accumulator, it is further provided that the power of the pump 5 is regulated within a predefined, high temperature range of the heat generator 1 as a function of the flow temperature value (at the heat generator 1).
    In both cases - ie in the low and in the high temperature range of the heat generator 1 - applies that the power of the pump 5 is controlled in proportion to the flow temperature value.
    In order to achieve a variable power adjustment with runtime optimization, moreover, it is provided that the power of the pump 5 is controlled from a predefined temperature level of the heat accumulator 3 both as a function of the flow temperature value of the heat generator 1 and in dependence on the further flow temperature value of the heat accumulator 3.
    Considered in more detail, it is provided that the power of the pump 5 is controlled from the predefined temperature level of the heat accumulator 3 in dependence on the difference between the flow temperature value of the heat generator 1 and the further flow temperature value of the heat accumulator 3.
    Since such a heating system in addition to the heat generator 1 and the heat storage 3 regularly via a heat consumer 6 (ie in particular a heating circuit with radiators or underfloor heating including its own [circulation] pump 11), is further provided that this over a (between the two temperature sensors opening) Wärmeverbrauchervorlauflei-device 7 is connected to the flow line 2 and a heat consumer return line 8 to the return line 4.
    The just explained control method is therefore particularly advantageous because by means of the (circulation) pump 11 with appropriate adjustment of the pump 5 (for example, standstill or only a very small volume flow) ultimately even via the flow line 2 heat transfer medium is removed from the heat storage 3, d , H. in the section between the heat accumulator 3 and the mouth of the heat-consumer feed line 7 takes place virtually a flow reversal, which can obviously lead to different temperatures at the two temperature sensors.
    Further, a third temperature value is detected on the return line 4 in the region between the heat generator 1 and the opening into the return line 4 heat consumer return line 8. Such a position of the temperature sensor for detecting this third temperature value is marked approximately centrally in FIG. 1 with the aid of the small black dot on the return line 4.
    In order to achieve a constant heat transfer at different return temperatures of the heat consumer 6, it is also provided that the power of the pump 5 is also regulated in dependence on the third temperature value.
    Furthermore, it is provided that the pump 5 is switched off below the low temperature range of the heat generator 1. In order to ensure that the heat generator 1 is no longer flowed through by the heat transfer medium, a motor-operated valve 10 is also arranged on the return line 4, which is not shown separately when the heat generator 1 via the control unit, which also assumes all other aforementioned control activities , is closed.
    In other words again, the method according to the invention for operating a heating system works as follows:
    The heat demand-guided volume flow control according to the invention for storing the excess heat in a buffer memory (heat storage 3) or heat to a consumer (heat consumer 6) adapts in conjunction with an internal physical return flow increase of a modulating heat generator 1 for solid fuels to the respective operator or user-side heat demand and always operates the heat generator in the optimum range.
    From a predefined temperature level of the heat accumulator 3, the further flow temperature value at the heat accumulator 3 is used as the reference variable in the continuous adjustment to the flow temperature value of the heat generator 1. The third temperature value at the return line 4 serves as additional monitoring. Depending on the temperature condition, different control characteristics are established. These methods work on a parameter basis, in each case in conjunction with the heat generator control methodology: a) function " lower route guidance " for a quick achievement of optimal operating conditions:
    For cold heat generator 1, heat storage 3 and system is started from a lower threshold value of the flow temperature value of the heat generator 1 with the smallest possible volume flow of the pump 5.
    As the temperature of the heat generator 1 rises, the volumetric flow rate is increased by a " destination guidance " raised as a function of the flow temperature value at the heat generator 1. This function serves to protect the heat generator 1 and should counteract a Verteerung in the heating by dew point undershooting. In conjunction with a control-side starting discharge of the heat generator 1 or optionally with a heat storage charging process, the heating circuits are released to the heat consumer 6 only at the reached temperature level at the upper heat storage temperature sensor and supplied with heat; Thus, the heating process is kept as short as possible. b) function " Delta T " for a variable power adjustment with runtime optimization: b1) From a predefined temperature level of the heat accumulator 3, the volume flow or the power of the pump 5 is adjusted based on the difference value from the flow temperature value at the heat generator 1 and the further flow temperature value at the heat storage 3 as a percentage of the respective deviation heat demand. If the difference value is greatly reduced, the heat generator 1 remains in a high power supply and the volumetric flow rate continues to adjust above the differential value until the heat demand saturates. In this operating state, the heat generator 1 can be operated with nominal load. b2) With lower heat demand and consequently rapidly rising temperature values, the burner output is reduced by the control of the heat generator 1 from the time at which the flow temperature value of the heat generator 1 is greater than its target value. With now slightly decreasing flow temperature at the heat generator 1 and further slightly rising, further flow temperature value at the heat storage 3, the flow rate adapts to the minimum value. b3) When the heat demand changes, the "Delta T" control reacts immediately to the decreasing or increasing further flow temperature value at the heat storage 3 in comparison with the flow temperature value at the heat generator 1. The heat generator 1's output adapts to the balancing of the actual flow temperature value at the heat generator 1 with the corresponding desired value at this point or upstream of the adjustment of the actual further flow temperature value at the heat storage 3 to the target value at this point also automatically. c) Function " Upper route guidance " to increase efficiency with low heat demand with charging of the heat accumulator 3: At low heat demand, high flow temperature value at the heat generator 1 and a high further flow temperature value at the heat storage 3 is raised above an excess of an upper threshold value of the flow temperature value at the heat generator targeted the volume flow to a load of the heat accumulator 3 or the buffer memory). In this situation with a high temperature level and low heat demand makes a further operation of the heat generator 1 energetically makes no sense. This is thus turned off as soon as the buffer memory is charged, which in turn can be determined by means of a further, arranged at the bottom of the buffer temperature sensor. d) Function Offset Shifting: An additional monitoring of the third temperature value at the return line 4 ensures an offset with the flow temperature value at the heat generator 1 to an offset displacement of the corresponding manipulated variable for the pump 5 and for a constant heat dissipation with adapted flow at changing return temperatures. This function applies to all control areas. e) Function "Hydraulic adaptation": Via a volume flow adjustment (hydraulic balancing) in defined operating states of the heating system, an appropriate adjustment of the above-mentioned valve 10, an automatic adaptation to the on-site hydraulic resistance is realized via egg ne. The basis for this purpose is a volumetric flow setpoint which results from a function from a parameter specification as well as the flow temperature value of the heat generator 1 and the third temperature value at the return line 4. After release, this value is compared with a measured value for the volume flow and from this a travel for the valve 10 is determined. f) function " flow prevention " When the heat generator 1 is switched off: In addition, a flow through the heat generator 1 is prevented at standstill by automatically closing the valve 10 to prevent unwanted Auskühlverlusten. Requirements: The modulating heat generator 1 for solid fuels to be operated must be approved for operation without an external return flow lift. A corresponding heat storage charging method with 2-sensor technology and a parallel connection between the heat storage 3 and heat consumers 6 are to be set ahead. Corresponding information about the parameter setting must be known. A detection of the flow temperature of the heat generator 1 must also be possible.
    权利要求:
    Claims (10)
    [1]
    Patent Attorneys Dipl.-Ing. Helmut Hübscher Dipl.-Ing. Karl Winfried Hellmich Spittelwiese 4, 4020 Linz (39949) IV claims 1. A method for operating a heating system, with a heat generator (1) a heat transfer medium is heated to a flow temperature value, wherein the heat from the heat generator (1) heated heat transfer medium via a flow line (2 ) is supplied to a heat storage (3), wherein the heat storage (3) stored heat transfer medium via a return line (4) to the heat generator (1) is returned, characterized in that for conveying the heat transfer medium through the supply and return line (2, 4 ) a power-adjustable pump (5) is used, that the flow temperature of the heat transfer medium is detected, and that the power of the pump (5) is controlled in dependence on the detected flow temperature value of the heat transfer medium.
    [2]
    2. The method according to claim 1, characterized in that the heat storage side, a further flow temperature value of the heat transfer medium is detected and that the power of the pump (5) is regulated in dependence on this further flow temperature value of the heat transfer medium.
    [3]
    3. The method according to claim 1 or 2, characterized in that the power of the pump (5) is controlled within a predefined, low temperature range of the heat generator (1) in dependence on the flow temperature value.
    [4]
    4. The method according to any one of claims 1 to 3, characterized in that the power of the pump (5) is controlled within a predefined, high temperature range of the heat generator (1) in dependence on the flow temperature value.
    [5]
    5. The method according to claim 3 or 4, characterized in that the power of the pump (5) in the low and high temperature range of the heat generator (1) is regulated in proportion to the flow temperature value.
    [6]
    6. The method according to any one of claims 1 to 5, characterized in that the power of the pump (5) from a predefined temperature level of the heat accumulator (3) both as a function of the flow temperature value of the heat generator (1) and in dependence of the further flow temperature value of the heat storage (3) is regulated.
    [7]
    7. The method according to claim 6, characterized in that the power of the pump (5) from the predefined temperature level of the heat accumulator (3) in dependence on the difference between the flow temperature value of the heat generator (1) and the further flow temperature value of the heat accumulator (3) is controlled ,
    [8]
    8. The method according to any one of claims 1 to 7, characterized in that a heat consumer (6) is used, which via a heat consumer feed line (7) with the flow line (2) and a heat consumer return line (8) with the return line (4 ) connected is.
    [9]
    9. The method according to claim 8, characterized in that at the return line (4) in the region between the heat generator (1) and in the return line (4) opening heat consumer return line (8) a third Temperatu rwert is detected.
    [10]
    10. The method according to claim 9, characterized in that the power of the pump (5) is also regulated in dependence on the third temperature value. Linz, September 01, 2014 Viessmann Werke GmbH & Co KG by: / Dl Helmut Hübscher / (electronically signed)
    类似技术:
    公开号 | 公开日 | 专利标题
    DE102006045034B4|2009-04-02|A water cooled constant temperature liquid circulating device and method for controlling the temperature of the circulating liquid
    EP3034955B1|2021-02-17|Method for carrying out an automated hydraulic compensation of a heating installation
    EP2913594A1|2015-09-02|Method for operating a heating system with no buffer storage, in particular for guaranteeing safe and correct operation
    AT515678B1|2015-11-15|Method for operating a heating system
    DE102014202738A1|2015-08-20|Method for automated hydraulic balancing of a refining plant
    EP3101352A1|2016-12-07|Method for operating a heating installation and controller with differential pressure sensor
    EP0807790A2|1997-11-19|Method and system for prepairing sanitary hot water
    DE102011001223A1|2012-09-13|Operating method of heating system used in e.g. homes, involves modulating heat generator, heating circuit pump and bypass valve of heating system, depending on the flow, return and outside temperatures and flow rate of water
    DE102009017423A1|2010-10-21|Hot water store loading control process for laminar water storage involves driving second circulation pump on basis of parameter dependent on pump operating point
    DE102013105786A1|2014-12-11|Method for controlling a central heating system
    DE102012008436B4|2019-06-19|Method for controlling a hydrodynamic coupling
    EP2028362A2|2009-02-25|Fuel temperature control by exploiting system inactivity
    DE102004042866B4|2012-06-06|Drainback solar system
    DE102005040792B3|2007-02-01|Control device for a combination heating device comprises a control unit formed as a self-learning pilot control unit
    EP0001826B1|1980-09-17|Hot-water heating system
    DE102011009750A1|2012-08-02|Method for operating heater for heating room, involves operating or switching-off burner when temperature gradient is greater than threshold value, where gradient resulting with different powers is compared with different threshold values
    EP3023709B1|2019-05-08|Method for heating a fluid in a storage device in a heating system and heating system for same
    DE102012101850A1|2013-09-12|Method for controlling heating system of building, involves providing flow rate of heat carrier in generator circuit as input variable by which control variable of power of generator is affected, where generator controls heating power
    EP2218967B1|2015-11-25|Method and device for regulating the running time of a burner
    EP2498010A2|2012-09-12|Method for return temperature raising and device for return temperature raising
    DE102010053209A1|2012-06-06|Heating system and method for heating a plurality of rooms
    EP2199690B1|2017-09-06|Method and device for regulating a thermal solar assembly
    CH678887A5|1991-11-15|
    DE202014104435U1|2014-10-15|heating system
    DE102018200652A1|2019-07-18|Method for controlling a circulating pump and circulating pump
    同族专利:
    公开号 | 公开日
    DE102014112578A1|2015-03-05|
    AT515678B1|2015-11-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB2023805A|1978-06-14|1980-01-03|Cobra Technology Ltd|Central heating systems|
    EP2363650A2|2010-02-24|2011-09-07|Helmut Bälz GmbH|Heater group with jet pump regulation|
    DE102008028375A1|2008-06-13|2009-12-17|Solarnext Ag|Delivery medium flow rate regulating method for e.g. hydraulic heating system, involves controlling flow rate of control unit by adjusting variable, which is formed from difference between actual value and reference value|DE102015218012A1|2015-09-18|2017-03-23|Viessmann Werke Gmbh & Co Kg|Method and apparatus for controlling a temperature of a fluid carrier medium|
    法律状态:
    2020-08-15| MM01| Lapse because of not paying annual fees|Effective date: 20190901 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102013109562|2013-09-02|
    [返回顶部]