EP3859228A1 - Chauffe-eau instantané pour chauffer l'eau - Google Patents

Chauffe-eau instantané pour chauffer l'eau Download PDF

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Publication number
EP3859228A1
EP3859228A1 EP20154818.7A EP20154818A EP3859228A1 EP 3859228 A1 EP3859228 A1 EP 3859228A1 EP 20154818 A EP20154818 A EP 20154818A EP 3859228 A1 EP3859228 A1 EP 3859228A1
Authority
EP
European Patent Office
Prior art keywords
water
throttle element
designed
electric motor
control device
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.)
Granted
Application number
EP20154818.7A
Other languages
German (de)
English (en)
Other versions
EP3859228B1 (fr
Inventor
Christian Barlag
Christian Koch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gerdes Holding GmbH and Co KG
Original Assignee
Gerdes Holding GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gerdes Holding GmbH and Co KG filed Critical Gerdes Holding GmbH and Co KG
Priority to EP20154818.7A priority Critical patent/EP3859228B1/fr
Priority to PL20154818.7T priority patent/PL3859228T3/pl
Publication of EP3859228A1 publication Critical patent/EP3859228A1/fr
Application granted granted Critical
Publication of EP3859228B1 publication Critical patent/EP3859228B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/16—Arrangements for water drainage 
    • F24H9/17—Means for retaining water leaked from heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/12—Preventing or detecting fluid leakage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/124—Preventing or detecting electric faults, e.g. electric leakage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/144—Measuring or calculating energy consumption
    • F24H15/148—Assessing the current energy consumption
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/305—Control of valves
    • F24H15/31—Control of valves of valves having only one inlet port and one outlet port, e.g. flow rate regulating valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/355—Control of heat-generating means in heaters
    • F24H15/37—Control of heat-generating means in heaters of electric heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
    • F24H9/2028—Continuous-flow heaters

Definitions

  • the present invention relates to a water heater for water heating.
  • Instantaneous water heaters with protective devices by means of which the cold water inlet is automatically shut off when a leak in the pipe system occurs, are well known.
  • the protective devices used for this are usually designed purely mechanically and guarantee a reliable shut-off function in the de-energized state.
  • Such a protective device is for example from the document EP 3 018 390 A1 famous.
  • a pretensioned locking element is held by means of a locking bolt until it releases the locking bolt when a float floats up and the locking element automatically moves into a locking position in order to shut off the cold water inlet.
  • a protective device with a similar function can also be found in the document, for example EP 3 018 427 A1 emerged.
  • the document DE 10 2018 001 314 A1 shows a hot water generator with a controller which is set up to detect a leak and to shut off the flow of water by means of a solenoid valve when a leak is detected.
  • the flow sensor already located in the device is used to detect a leak.
  • the flow sensor is used to switch on the heating if the size of the volume flow exceeds a predetermined threshold value, for example five liters per minute.
  • the disadvantage is that the flow sensor and the respective evaluation circuit must be designed on the one hand for the detection of relatively large flow rates to determine when the heater is switched on and on the other hand for the detection of relatively small flow rates, in particular for flow rates of less than 0.5 or 0.1 liters per minute.
  • leakage detection is only minimal Extent is only possible after observation over a longer period of time. For example, it is necessary to monitor the flow or volume flow for an hour while the instantaneous water heater is not in tap mode. If a low volume flow is detected in this observation period despite no water withdrawal, this is assessed as an indication of a leak. In this way, leaks are only detected with a long time delay or, if the amount of leakage falls below the sensitivity threshold of the flow sensor, not registered at all. In this way, leaks occurring during the tapping operation cannot be detected or recorded at all. In addition, it is not possible to differentiate whether it is a leak or a water withdrawal in the context of a regular tap operation with only a low water volume flow.
  • Another disadvantage of the known water heater is that the solenoid valve used can only be switched between an open position and a closed position.
  • the sole purpose of the solenoid valve used is to shut off the water supply to the hot water generator in the event of a fault and / or leak.
  • the water flow rate when the solenoid valve is open is therefore determined exclusively by the existing water pressure in the water inlet and the flow resistance induced by the geometry of the flow path. However, it is not possible to set the maximum flow rate.
  • the water heater for hot water preparation mentioned at the beginning comprising a channel arrangement with a water inlet, which is set up for connection to a water supplying water line, and with a water outlet, which is set up for connection to a water discharge water line, one for heating through the channel arrangement set up in the flow direction of flowing water electrical heating device, an electronic control device designed to control the heating power of the heating device as well as a motor valve arranged in the water inlet and designed to limit the water flow rate and controllable by means of the control device, that is a motor-driven valve, wherein the motor valve comprises a valve body forming a flow path, an electric motor and a throttle element which is adjustable in position by means of the electric motor between an open position and a closed position and is set up to adjust the volume flow, and wherein the motor valve is designed such that the position adjustment of the throttle element in The direction of the closed position takes place with the direction of flow of the water.
  • the instantaneous water heater according to the invention offers a number of advantages.
  • By means of the motor valve according to the invention it is possible both to regulate the water flow rate and to shut off the inflow of water completely.
  • the engine valve according to the invention thus fulfills a double function.
  • By means of the control device it is possible to bring the throttle element into a desired position so that the maximum flow rate is limited to a predetermined upper value.
  • the instantaneous water heater can be adapted to different installation situations with regard to hydraulic and / or electrical connection conditions via the control device.
  • An expedient embodiment of the invention is characterized in that a sealing seat is arranged in the flow path and the throttle element is arranged on the water inlet side with respect to the sealing seat. Due to the arrangement of the throttle element on the water inlet side, the water flowing in the flow direction acts on the throttle element in the direction of the closed position. This force acting in the direction of the closed position additionally supports the position adjustment of the throttle element in the direction of the closed position. Thus, when the throttle element is moved in the direction of the closed position, less electrical power is required to operate the electric motor than is the case when the throttle element is moved in the opposite direction to the open position. With the same power consumption of the electric motor, the closing process is also supported by the water pressure and thus accelerated.
  • a preferred development of the invention is characterized in that the throttle element is designed to be linearly adjustable in position. In this way, the maximum flow rate of the water can be set variably in fine steps.
  • the electric motor comprises a spindle drive, by means of which the throttle element can be linearly adjusted in position.
  • the spindle drive offers the advantage that it is designed to be self-locking. A position of the throttle element once set by means of the electric motor is thus always retained unchanged due to the self-locking mentioned, even when the supply voltage of the electric motor is not present. In order to maintain the respective position of the throttle element, there is therefore no need to provide electrical energy.
  • Another expedient embodiment of the invention is characterized in that the electric motor is designed as a stepper motor.
  • the embodiment of the electric motor as a stepper motor offers the advantage that the position adjustment of the throttle element is possible in a particularly simple and inexpensive manner, in particular without additional detection of the angular position of the motor axis.
  • a servomotor can also be used, the respective angular position of which is recorded by an angular position transmitter and regulated back accordingly.
  • the throttle member is conical.
  • the cone-shaped geometry of the throttle element enables the maximum flow rate to be regulated as finely as possible.
  • the throttle element is designed to taper in the direction of flow of the water. More preferably, the throttle member is designed to taper linearly in the flow direction of the water. In this way, the throttle member is designed to be conical or frustoconical.
  • a preferred development of the invention is characterized in that a sealing means is arranged circumferentially on the throttle element, the sealing means being set up to come into sealing contact with the sealing seat in the closed position.
  • the sealing means arranged circumferentially on the throttle element offers the advantage of a complete shut-off of the water flow in the closed position.
  • the sealant offers the advantage that in the closed position the acting water pressure presses the sealant against the seal seat and thus automatically ensures that the sealant is pressed against the seal seat with increasing water pressure. A particularly reliable sealing effect is achieved in this way.
  • the water heater further comprises at least one trough-like receiving area set up to receive leakage and / or condensed water with a sensor means for detecting water accumulation in the receiving area, the control device being designed in the case of water accumulation detected by the sensor means to control the engine valve in such a way that the throttle element is moved into the closed position.
  • the tub-like receiving area offers the advantage that even small amounts of water can be detected and the occurrence of the smallest amounts of leakage and / or condensation water can be determined.
  • An expedient embodiment of the invention is characterized in that the control device has an undervoltage detection device which is set up to detect an undervoltage or the failure of one or more phases of the mains voltage as an undervoltage event and, in the event of an undervoltage event detected, to control the motor valve in such a way that the throttle element is in the closed position is moved.
  • the undervoltage detection device of the control device offers the advantage that the water inlet is shut off not only in the event of hydraulic leaks or faults, but also in the event of a mains voltage failure or when undervoltage events occur, the water inlet is hydraulically locked. In this way, whenever the instantaneous water heater according to the invention is exposed to an electrical supply environment which could lead to malfunctions in the control electronics or control device, the water supply to the device is shut off. A leakage of leakage water is therefore practically impossible in such situations.
  • the control device comprises at least one electrical energy store which is set up to provide at least the amount of electrical energy that is required to move the throttle element from the open position into the closed position by means of the electric motor.
  • the electrical energy store ensures that the throttle element is safely moved into the closed position from any position by means of the electric motor, even if the supply on the mains voltage side is no longer ensured.
  • the electrical energy store is designed as a buffer which provides the electrical energy required to operate the electric motor for the duration of the closing process of the throttle member.
  • control device is designed to draw its supply voltage from the electrical energy store at least for the duration of the movement of the throttle element from the open position to the closed position in the event of a detected undervoltage event.
  • the size of the electrical energy store is advantageously designed such that the electrical energy stored therein is at least sufficient to guarantee that the throttle element can be safely moved into the closed position.
  • the furthest path to be covered by the throttle element is that from the open position into the closed position, so that it is advantageous that the energy store is designed so that sufficient electrical energy is available to move the throttle element from the open position into the closed position.
  • the capacity of the electrical energy store is designed in such a way that, in addition to the aforementioned amount of electrical energy, a safety margin is provided so that there is sufficient energy reserve in each case in the event of increased power consumption, for example due to pressure and / or flow conditions or increased mechanical resistance in order to always bring the throttle element into the closed position.
  • valve body comprises a counter-support element designed to mechanically limit the travel of the throttle element in the open position
  • control device is further designed to detect the power consumption of the electric motor and to control the electric motor following a previous undervoltage event and to move the throttle element into the open position, the reaching of the open position by means of the control device when a predetermined value is exceeded first reference value of the recorded current consumption of the electric motor is determined.
  • the mechanical travel limitation of the throttle element in the open position offers a mechanically robust and at the same time inexpensive solution to ensure that the throttle element is in the open position.
  • the open position can be used as a reference position which, after being approached once, serves as a reference point for the further adjustment of the position of the throttle element. Further sensors for determining the position of the throttle element are therefore not required.
  • control device is designed to determine when the closed position has been reached by comparing the current consumption of the electric motor with a predetermined second reference value.
  • the reaching of the closed position is recognized by measuring the current consumption of the electric motor and comparing it with a second reference value.
  • a travel limitation in the closed position takes place through the sealing seat, so that here too the position of the throttle element in the closed position is determined via a significant increase in the motor current consumption.
  • control device is further designed to control the electric motor following a previous undervoltage event and to move the throttle element into a position in which the throttle element comes into mechanical limiting contact with the counter-support element.
  • Instantaneous water heaters for hot water preparation in particular electrically operated bare wire instantaneous water heaters, regularly comprise the components and / or parts described below, but not shown in the drawing.
  • Such instantaneous water heaters have a channel arrangement with a water inlet and a water outlet.
  • the water inlet is set up to be connected to a water supplying water pipe, while the water outlet is set up to be connected to a water discharge water pipe.
  • an electrical heating device for example in the form of heating coils, which are arranged in heating channels of the heating channel arrangement and are washed by the water to be heated.
  • Such instantaneous water heaters comprise a correspondingly configured electronic control device.
  • the motor valve 10 shown in the drawing which is set up to limit the water flow rate and can be controlled by means of a control device, is arranged in the water inlet.
  • the engine valve 10 has a valve body 11 which forms a flow path 12 for the water.
  • the motor valve 10 further comprises an electric motor 13 and a throttle element 14, the throttle element 14 being set up in a position-adjustable manner for setting the volume flow and being movable between an open position and a closed position by means of the electric motor 13.
  • the open position is shown as an example.
  • the motor valve 10 is designed in such a way that the position adjustment of the throttle element 14 takes place in the direction of the closed position with the flow direction 15.
  • the position of the throttle member 14 is adjusted in the direction of the closed position in the flow direction 15 of the water, while the position of the throttle member 14 is adjusted in the open position counter to the flow direction 15 of the water.
  • a sealing seat 16 is arranged in the flow path 12.
  • the throttle element 14 is arranged on the water inlet side with respect to the sealing seat 16.
  • the throttle element 14 is pressed in the flow direction 15 of the water in the direction of the sealing seat 16.
  • the adjustment power to be applied by means of the electric motor 13 is therefore less when the throttle member 14 moves in the direction of the closed position than when the position is adjusted in the opposite direction.
  • the throttle element 14 is additionally pressed against the sealing seat 16 due to the water pressure.
  • the throttle element 14, together with the sealing seat 16 is designed to be self-sealing when pressure is applied in the closed position.
  • the throttle element 14 is preferably designed to be linearly adjustable in position.
  • the throttle member 14 is in this way in the adjustment directions 17, as in FIG Fig. 2 shown, set up to be changeable.
  • the flow rate results from the gap present between the throttle element 14 and the sealing seat 16, the opening width of which varies as a function of the respective position of the throttle element 14 relative to the sealing seat 16.
  • the flow rate is determined by the respective geometry of the throttle element 14 and the sealing seat 16.
  • the electric motor 13 further preferably comprises a spindle drive - not shown in the drawing.
  • the spindle drive offers the advantage that it is designed to be self-locking. Forces acting on the throttle element 14 through the flow of water do not lead to an unwanted adjustment of the position of the throttle element 14. Another advantage is that the electric motor 13 does not have to exert any torque on the spindle drive in order to maintain the position of the throttle element 14 Throttle member 14 is thus held by the electric motor 13 even without receiving electrical power.
  • the electric motor 13 is preferably designed as a stepping motor. Alternatively, it is possible to design the electric motor 13 as a servo motor, so that the respective angular position of the drive is monitored and, if necessary, corrected.
  • the use of a stepping motor offers the advantage that each angular step is assigned exactly to a section of the path extending in the respective adjustment directions 17 of the throttle element 14. In this way, it is possible to linearly adjust the position of the throttle element 14 precisely on the basis of a predetermined number of steps.
  • the throttle member 14 is preferably conical. Between the conical surface 18 of the throttle element 14 and the sealing seat 16 an intermediate space 19 is thus formed which, depending on the respective position of the throttle element 14, forms a passage opening of adjustable cross-section for the water flow. As in Fig. 2 As shown, the throttle member 14 is advantageously designed to taper in the flow direction 15 of the water.
  • a sealing means 20 is preferably arranged circumferentially on the throttle element 14.
  • the sealing means 20 is preferably designed as an O-ring.
  • the sealing means 20 is set up to come into sealing contact with the sealing seat 16 in the closed position.
  • the sealing means 20 thus effects a complete shut-off of the watercourse in the closed position.
  • the motor valve 10 is thus set up to completely interrupt the flow of water in the closed position.
  • the sealant 20 - as in FIG Fig. 2 shown - is arranged completely outside the conical surface 18.
  • the sealing means 20 forms a mechanical stop in that it only comes into contact with the sealing seat 16 in the closed position. This presupposes that the sealing seat 16 has a correspondingly large clear width in order to accommodate the conical surface 18 in the closed position without contact with the system.
  • the instantaneous water heater according to the invention further comprises a trough-like receiving area - not shown in the drawing - which is set up to receive leaking water and / or condensation water.
  • the receiving area comprises at least one sensor means for detecting an accumulation of water in the same.
  • the sensor means is connected to the control device, which is designed to control the engine valve 10 in the event of an accumulation of water detected by means of the sensor means in such a way that the throttle element 14 is moved into the closed position.
  • a sensor means For example, a float switch or an electrode arrangement can be used to measure conductivity.
  • the throttle element 14 of the motorized valve 10 is moved into the closed position by means of the control device set up for this purpose and a further inflow of water into the device is prevented.
  • the control device preferably further comprises an undervoltage detection device which is designed to detect an undervoltage in the mains voltage or the failure of one or more phases of the mains voltage as an undervoltage event. Furthermore, the control device is designed, in the event of a detected undervoltage event, to control the engine valve 10 in such a way that the throttle element 14 is moved into the closed position. In this way, not only in the event of a leak, but also in the event of possible malfunctions in the water heater operation due to disturbances in the mains voltage, an inflow of water to the device is prevented.
  • the control device advantageously comprises at least one electrical energy store which is set up to provide at least the amount of electrical energy that is required to move the throttle element 14 from the open position into the closed position by means of the electric motor 13.
  • Electrolytic capacitors, supercapacitors or accumulators, for example, are used as electrical energy storage devices. The dimensioning takes place as a function of the energy requirement of the electric motor 13 and the maximum time required to move the throttle element 14 from the open position into the closed position.
  • the valve body 11 advantageously comprises a counter-support element 21.
  • the counter-support element 21 is set up and designed to mechanically limit the travel of the throttle element 14 in the open position. When the open position is reached, that part of the throttle element 14 facing the counter-support element 21 comes into mechanical contact with the latter and thus defines the end position of the throttle element 14 in the open position.
  • the control device is further designed to detect the power consumption of the electric motor 13 and, following a previous undervoltage event, to control the electric motor 13 in such a way that the throttle element 14 is moved into the open position.
  • the control device is designed to determine when the open position has been reached by determining that a predetermined first reference value of the recorded current consumption of the electric motor 13 has been exceeded.
  • the power consumption of the electric motor 13 increases significantly when the open position is reached and can therefore be used as a criterion for reaching the same position. It is thus possible to move the throttle element 14 into the same, well-defined position in the open position, which is used as a reference position for any subsequent position adjustment of the throttle element 14.
  • a stepper motor is used as the electric motor 13 it is thus possible in a particularly simple manner to precisely set the respective adjustment position of the throttle element 14 solely on the basis of the number of steps.
  • the control device is further preferably designed to determine when the closed position has been reached by comparing the current consumption of the electric motor 13 with a predetermined second reference value.
  • the throttle element 14 is mechanically limited in the closed position by the sealing seat 16, which preferably comes into abutment contact with the sealing means 20. This mechanical travel limitation increases the force or torque required for position adjustment, which leads to a significant increase in the power consumption of the electric motor 13.
  • control device is further designed to control the electric motor 13 following a previous undervoltage event in such a way that the throttle element 14 is moved into a position in which it comes into mechanical limiting contact with the counter-support element 21.
  • the throttle element 14 is first moved into a defined, previously known position, in this case into a defined position of the open position. In this known position, which has once been approached, various positions between the open and closed position can then be approached exactly.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
EP20154818.7A 2020-01-31 2020-01-31 Chauffe-eau instantané pour chauffer l'eau Active EP3859228B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20154818.7A EP3859228B1 (fr) 2020-01-31 2020-01-31 Chauffe-eau instantané pour chauffer l'eau
PL20154818.7T PL3859228T3 (pl) 2020-01-31 2020-01-31 Podgrzewacz przepływowy do podgrzewania wody

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20154818.7A EP3859228B1 (fr) 2020-01-31 2020-01-31 Chauffe-eau instantané pour chauffer l'eau

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Publication Number Publication Date
EP3859228A1 true EP3859228A1 (fr) 2021-08-04
EP3859228B1 EP3859228B1 (fr) 2024-03-06

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EP (1) EP3859228B1 (fr)
PL (1) PL3859228T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115247898A (zh) * 2022-06-30 2022-10-28 宁波方太厨具有限公司 热水器再出水恒温控制方法
EP4421403A1 (fr) * 2023-02-22 2024-08-28 Gerdes Holding GmbH & Co. KG Chauffe-eau instantané, procédé et dispositif de chauffe-eau instantané pour la préparation d'eau chaude
EP4431831A1 (fr) * 2023-03-16 2024-09-18 Gerdes Holding GmbH & Co. KG Dispositif de détection de fuite et chauffe-eau instantané équipé d'un tel dispositif

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3805441A1 (de) * 1987-03-02 1988-09-15 Stiebel Eltron Gmbh & Co Kg Durchlauferhitzer
EP3018390A1 (fr) 2014-11-06 2016-05-11 BSH Hausgeräte GmbH Chauffe-eau et dispositif de protection
EP3018427A1 (fr) 2014-11-06 2016-05-11 BSH Hausgeräte GmbH Dispositif de protection et chauffe-eau
US20160208947A1 (en) * 2015-01-19 2016-07-21 Moen Incorporated Electronic plumbing fixture fitting with electronic valves having sequential operation
CN106705432A (zh) * 2016-12-07 2017-05-24 常州新和美电器有限公司 高效电磁加热式浴室供水系统
DE102017102956A1 (de) * 2017-02-14 2018-08-16 Franke Water Systems Ag Vorrichtung zur Ausgabe von Heißwasser
US20190072200A1 (en) * 2016-03-19 2019-03-07 Xiaoping Chen Electric valve and control method therefor
US20190145661A1 (en) * 2017-11-13 2019-05-16 Rheem Manufacturing Company Leak Detection Sensor Assemblies For Water Heaters
DE102018001314A1 (de) 2018-02-20 2019-08-22 Stiebel Eltron Gmbh & Co. Kg Warmwassererzeuger

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3805441A1 (de) * 1987-03-02 1988-09-15 Stiebel Eltron Gmbh & Co Kg Durchlauferhitzer
EP3018390A1 (fr) 2014-11-06 2016-05-11 BSH Hausgeräte GmbH Chauffe-eau et dispositif de protection
EP3018427A1 (fr) 2014-11-06 2016-05-11 BSH Hausgeräte GmbH Dispositif de protection et chauffe-eau
US20160208947A1 (en) * 2015-01-19 2016-07-21 Moen Incorporated Electronic plumbing fixture fitting with electronic valves having sequential operation
US20190072200A1 (en) * 2016-03-19 2019-03-07 Xiaoping Chen Electric valve and control method therefor
CN106705432A (zh) * 2016-12-07 2017-05-24 常州新和美电器有限公司 高效电磁加热式浴室供水系统
DE102017102956A1 (de) * 2017-02-14 2018-08-16 Franke Water Systems Ag Vorrichtung zur Ausgabe von Heißwasser
US20190145661A1 (en) * 2017-11-13 2019-05-16 Rheem Manufacturing Company Leak Detection Sensor Assemblies For Water Heaters
DE102018001314A1 (de) 2018-02-20 2019-08-22 Stiebel Eltron Gmbh & Co. Kg Warmwassererzeuger

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CN115247898A (zh) * 2022-06-30 2022-10-28 宁波方太厨具有限公司 热水器再出水恒温控制方法
CN115247898B (zh) * 2022-06-30 2024-04-02 宁波方太厨具有限公司 热水器再出水恒温控制方法
EP4421403A1 (fr) * 2023-02-22 2024-08-28 Gerdes Holding GmbH & Co. KG Chauffe-eau instantané, procédé et dispositif de chauffe-eau instantané pour la préparation d'eau chaude
EP4431831A1 (fr) * 2023-03-16 2024-09-18 Gerdes Holding GmbH & Co. KG Dispositif de détection de fuite et chauffe-eau instantané équipé d'un tel dispositif

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