EP3315868A1 - Dispositiv de pilotage pour radiateur, radiateur électrohydraulique avec cet dispositiv de pilotage et procédé pour contrôler le radiateur - Google Patents

Dispositiv de pilotage pour radiateur, radiateur électrohydraulique avec cet dispositiv de pilotage et procédé pour contrôler le radiateur Download PDF

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Publication number
EP3315868A1
EP3315868A1 EP17199025.2A EP17199025A EP3315868A1 EP 3315868 A1 EP3315868 A1 EP 3315868A1 EP 17199025 A EP17199025 A EP 17199025A EP 3315868 A1 EP3315868 A1 EP 3315868A1
Authority
EP
European Patent Office
Prior art keywords
mouth
radiator
control device
electric heater
hydraulic
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.)
Withdrawn
Application number
EP17199025.2A
Other languages
German (de)
English (en)
Inventor
Marco Ruffini
Vittorio RUFFINI
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.)
Ideal Clima Srl
Original Assignee
Ideal Clima Srl
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 Ideal Clima Srl filed Critical Ideal Clima Srl
Publication of EP3315868A1 publication Critical patent/EP3315868A1/fr
Withdrawn legal-status Critical Current

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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
    • F24D13/00—Electric heating systems
    • F24D13/04—Electric heating systems using electric heating of heat-transfer fluid in separate units of the system
    • 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
    • F24D19/0002—Means for connecting central heating radiators to circulation pipes
    • F24D19/0009—In a two pipe system
    • F24D19/0012—Comprising regulation means
    • 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
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
    • F24D19/1018—Radiator 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
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/281—Input from user
    • 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
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/02—Fluid distribution means
    • F24D2220/0271—Valves

Definitions

  • the present invention relates to a control device for a radiator, a radiator of the electro-hydraulic type comprising said control device and a control method of such radiator.
  • the towel rail radiators are currently very widespread, and are much appreciated for the pleasant aesthetic and functionality thereof.
  • the so-called towel warmers are commonly used in bathrooms as they offer the possibility not only to heat the room but also to heat or dry the bathroom towels.
  • the towel warmers have a structure adapted to be fixed to a wall, generally composed of two column elements parallel to each other and intended to be vertically installed with respect to the ground, and from a plurality of transversal elements that extend parallel to each other between the two column elements.
  • the column elements and the transversal elements consist of tubular bodies of various shape internally hollow, and are connected to each other so as to form a hydraulic circuit.
  • the towel warmers of the hydraulic type are arranged to be connected to a hydraulic distribution system of a thermal carrier liquid, typically hot water at an entrance temperature generally comprised between 40°C and 85°C.
  • the column elements are connected one to the supply line fitting of the hydraulic system through an adjustment valve and another to the exit line fitting of the system through an opening/closing valve.
  • the column element connected to the supply line may be defined as inlet header of the hydraulic circuit, while the column element connected to the exit line may be defined as outlet header of the hydraulic circuit.
  • the supply and exit line fittings are arranged in the walls during the installation step of the hydraulic system.
  • connection between the column elements and the supply and exit line fittings are carried out at the bottom ends of the column elements.
  • towel warmers of the electric type wherein the elements are filled with a heating fluid, for example diathermic oil, and there is an electric heater, generally made with an electric resistance housed in an insulating enclosure carried by a support box-shaped body. The latter is coupled underneath a column element such that the electric heater is inserted into the column element and connected outside of the radiator structure to the electric supply system.
  • a heating fluid for example diathermic oil
  • an electric heater generally made with an electric resistance housed in an insulating enclosure carried by a support box-shaped body. The latter is coupled underneath a column element such that the electric heater is inserted into the column element and connected outside of the radiator structure to the electric supply system.
  • the towel warmers of the electro-hydraulic or hybrid type combine the heating action of the thermal carrier liquid flow and that of the electric heater.
  • a column element is connected to the hydraulic supply line while the other column element is connected to the exit line of they system and to the support box-shaped body of the electric heater through the interposition of a T-junction element.
  • Such T-junction element has a first mouth connected to the support box-shaped body of the electric heater, a second mouth coaxial with the first connected to the bottom end of the outlet header and a third mouth having transversal axis with respect to the first and second and connected to the hydraulic exit line.
  • the exit line fitting is offset with respect to the axis of the outlet header, since the exit line fitting is connected to the third mouth of the T-junction, which is transversal with respect to the other two.
  • the electric heater of a towel warmer of the hybrid type is generally electrically activated only when the thermo-sanitary hydraulic system is not active or in any case when the adjustment and opening/closing valves are in a closed position and, thus, isolate the hydraulic circuit of the towel warmer from the thermo-sanitary hydraulic system. This is due to the fact that if the electric heater is activated while water circulates in the towel warmer, only a high waste of energy would be obtained, without heating the room since the additional heat produced from the resistance is carried away by the water that continues to circulate and thus exits from the hydraulic circuit of the towel warmer.
  • the need to activate the electric heater may arise in the mid-seasons when the normal heating systems of the houses are off, or in the case of thermo-sanitary hydraulic systems that use new energy sources such as for example condensing boilers and heat pumps.
  • the delivery temperature of the water is typically low comprised between 35°C and 50°C. Therefore, even if the towel warmer is correctly sized for the room, the low water temperature does not allow a rapid drying of the towels, and does not allow for obtaining some degrees higher in the room.
  • the object of the present invention is to obviate the drawbacks mentioned hereinabove and in particular to devise a control device that allows converting a radiator of the hydraulic type into a radiator of the electro-hydraulic type avoiding the need to necessarily carry out masonry works.
  • Another object of the present invention is to provide a radiator of the electro-hydraulic type simple to mount and with high energy efficiency.
  • Yet another object of the present invention is to provide a control method of a radiator of the electro-hydraulic type, which allows managing the operation of the electric heater avoiding energy waste.
  • control device for radiators of the electro-hydraulic type of the radiator of the electro-hydraulic type comprising such control device and of the control method of said radiator of the electro-hydraulic type are subject of the dependent claims.
  • reference numeral 10 globally denotes a radiator.
  • the radiator 10 may be, for example, a towel rail warmer as the one shown in figure 1 .
  • Such radiator has a structure adapted to be fixed to a wall, having an inlet mouth 11 and an outlet mouth 12 that can be connected to respective hydraulic fittings 21, 22 of a hydraulic distribution system.
  • the inlet mouth 11 is intended to be connected to a hydraulic supply line of the distribution system that feeds thermal carrier fluid into the radiator; such thermal carrier fluid once circulated in the radiator comes out from the same through the outlet mouth 12 which is intended to be connected to an exit line of the distribution system.
  • thermal carrier liquid it is meant to preferably indicate hot water at a entrance temperature generally comprised between 25°C and 90°C.
  • the structure of the radiator 10 comprises two column elements 13, 14 parallel to each other and intended to be installed vertically with respect to the ground, and a plurality of transversal elements 15 that extend parallel to each other between the two column elements 13, 14.
  • the column elements 13, 14 and the transversal elements 15 may consist of tubular bodies of various shape internally hollow, and are connected to each other so as to form a hydraulic circuit.
  • the radiator 10 comprises a control device 30 adapted to operate the radiator 10 in an electro-hydraulic mode, i.e. such as a radiator of the electro-hydraulic type.
  • Such control device 30 comprises a three-way junction element 31 having a first 32 and a second 33 mouth coaxial to each other and a third mouth 34.
  • the three-way junction element 31, in particular, has a main duct that extends between the first 32 and the second 33 mouth.
  • the first mouth 32 is arranged to be coupled to at least one of the mouths 11, 12 of the radiator 10.
  • Such first mouth 32 may be provided with a connector 39, for example a nipple or a fitting by one part coupled by interlocking with the first mouth 32 and from the opposite part threaded so as to be able to couple with one of the mouths 11, 12 of the radiator 10.
  • a connector 39 for example a nipple or a fitting by one part coupled by interlocking with the first mouth 32 and from the opposite part threaded so as to be able to couple with one of the mouths 11, 12 of the radiator 10.
  • control device may be associated indifferently with the inlet mouth 11 or with the outlet mouth 12 of the radiator 10.
  • such coupling is of the screw-nut type.
  • the inlet mouth 11 and the outlet mouth 12 of the radiator 10 may be threaded and arranged to engage in screwing with the first mouth 31 of the three-way junction element 31 also provided with threading at the end or with the connector 39 where provided.
  • the third mouth 34 of the three-way junction element 31 is arranged to be connected to one of the hydraulic fittings 21, 22 of the hydraulic distribution system so that said fitting is substantially coaxial with the first 32 and the second 33 mouth of the three-way junction element 31.
  • the main duct of the three-way junction element 31 is connected to a derivation duct formed in a single piece with the main duct thereof.
  • the third mouth 34 is the terminal mouth of this derivation duct.
  • the derivation duct may be shaped such that the terminal mouth thereof coincident with the third mouth 34 is substantially coaxial with the first 32 and the second 33 mouth; in this way the third mouth 34 may be directly or through a connector coupled to fitting of the hydraulic system therewith aligned in axial direction.
  • the derivation duct is shaped such that the terminal mouth thereof coincident with the third mouth 34 is offset axially with respect to the axis of the first 32 and of the second 33 mouth.
  • the three-way junction element is a T-joint; in this case the third mouth 34 has a transversal axis with respect to that of the first 32 and of the second 33 mouth.
  • the third mouth 34 is provided with a fitting element 36 capable of connecting two elements transversely offset to each other.
  • Such fitting element 36 is connected by a part to the third mouth 34 of the three-way junction element 31 and by another part to one of the hydraulic fittings 21, 22 of the hydraulic distribution system.
  • the fitting element 36 is a flexible tube.
  • fitting element 36 is stiff but describes a non-rectilinear path adapted to the fluid connection between the third mouth 34 of the three-way junction element 31 and the fitting of the system, which therefore may be aligned axially with respect to the first 32 and to the second 33 mouth, as well as to the column element of the radiator 10 to which the control device 30 is connected.
  • the control device 30 further comprises an electric heater 35 having an elongated shape along a longitudinal X axis.
  • the electric heater 35 is a resistor housed inside of an insulating enclosure of corresponding shape.
  • the electric heater 35 has an end coupled to the second mouth 33 of the three-way junction element 31 such as to completely occlude the same; the electric heater 35 extends in the three-way junction element 31 defining with the inner walls of the main duct a passage for the thermal carrier fluid, until passing through the first mouth 32 and protruding outside the three-way junction element 31. It is noted that the electric heater 35 is shaped to not occlude the first mouth 32 of the three-way junction element 31, but to pass through such first mouth leaving a passage port for the thermal carrier fluid.
  • the electric heater 35 is screwed to second mouth 33 of the three-way junction element 31, such coupling in any case capable of being of another type for example shape.
  • the electric heater 35 is selectively connected to an electrical power supply line, for example by a cable that comes out at the second mouth 33 of the three-way junction element 31.
  • the control device 30 further comprises an electrovalve unit 37, 38 arranged to selectively open the fluid connection between the three-way junction element 31 and the hydraulic distribution system.
  • the electrovalve unit 37, 38 is capable of controlling the opening and the closing of the opening of the main duct from which the derivation duct starts.
  • the electrovalve unit 37, 38 may comprises, in particular, an electrovalve that as shown has a piston 37 operable by an electromagnetic actuator 38.
  • the electrovalve unit 37, 38 is associated with the junction element 31 at a fourth connection mouth 41, wherein the piston 37, in particular, is inserted.
  • the control device 30, advantageously, also comprises an electronic control unit 40 configured to drive the electrovalve unit 37, 38 and control the selective connection between the electric heater 35 and the power supply line.
  • the electronic control unit 40 is electrically supplied and is capable of operating the electromagnetic actuator 38 of the electrovalve unit 37, 38 and of turning on or off the electric heater 35.
  • the electronic control unit 40 is configured to carry out a power-on procedure of the electric heater 35 during the heating in hydraulic mode.
  • heating in hydraulic mode it is meant to indicate the operating mode of the radiator 10 in which the hot thermal carrier fluid circulates in the radiator 10 thereof in order to heat the room where the radiator 10 is installed and/or to dry the towels rested on the same.
  • the power-on procedure of the electric heater 35 comprises the steps:
  • the electronic control unit 40 is capable of turning on the electric heater 35 in any condition also during the heating in hydraulic mode.
  • the control device 10 comprises one or more sensors for detecting one or more climatic parameters related to the electronic control unit 40.
  • sensors may be room temperature and humidity sensors.
  • the electronic control unit 40 is configured to carry out the power-on procedure of the electric heater 35 if the climatic parameters detected by the sensors reach predetermined values.
  • the electronic control unit 40 may be programmed such as to carry out the power-on procedure of the electric heater 35 when the temperature of the room where the radiator 10 is installed reaches a preset temperature.
  • the electronic control unit 40 is also configured to receive a command from a user, and to carry out the power-on procedure of the electric heater 35 following a user's command.
  • the electronic control unit 40 may be provided with a inlet connected to interfacing means with the user such as a button. It is also possible to arrange interfacing means such as a keyboard or a touch screen through which a user may program the turning on of the electric heater 35.
  • control device 30 comprises a single box-shaped body 50 wherein the three-way junction element 31, the electric heater 35, the electrovalve unit 37 and the electronic control unit 40 are at least partially housed.
  • the box-shaped body 50 further has openings at the first 32 and the second 33 mouth of the three-way junction element 31 in order to allow the connection of the control device 30 respectively with the radiator 10 and the hydraulic distribution system.
  • the electric heater 35 protrudes outside the three-way junction element 31 and the box-shaped body 50 slipping, during the mounting of the control device 30 on the radiator 10, into the corresponding column element.
  • the electric heater 35 passes through the first mouth 11 of the three-way junction element 31 leaving a passage port for the thermal carrier fluid which comes from the hydraulic system and penetrates inside the three-way junction element 31 through the third mouth 34.
  • control device 30 comprises a plurality of box-shaped modules 60, 60', 60'' connected to one another in succession wherein a first box-shaped module 60' and a second box-shaped module (60'') are adapted to be connected respectively to the inlet mouth 11 or to the outlet mouth 12 of the radiator 10 or vice versa.
  • the first box-shaped module 60' supports at least the three-way junction element 31, the electric heater 35, the fitting element 36; the electrovalve unit 37, 38 may be supported by the first box-shaped module 60' or by the second box-shaped module 60".
  • the latter embodiment is shown in figure 6 .
  • the electronic control unit 40 may be housed in any one of the box-shaped modules 60, 60', 60''.
  • the box-shaped modules 60, 60', 60'' are mechanically connected to one another and allow the passage of the wiring necessary for connecting the electronic control unit 40 to the electrovalve unit 37, 38, to the electric heater 35, to the sensors and to the electrical power supply line.
  • the control device 30 takes on a shape which extends substantially across the transversal width of the radiator 10.
  • the control device 10 may be adapted to radiators having different transversal extensions.
  • the box-shaped modules 60, 60', 60'' are telescopic with one another, as shown in figure 7 .
  • the second box-shaped module 60" is arranged to telescopically slide within the first box-shaped module 60'.
  • the first box-shaped module 60' supports the three-way junction element 31, the electric heater 35, the fitting element 36, the electronic control unit 40 while the second box-shaped module 60" supports the electrovalve group 37, 38.
  • the electronic control unit 40 may be housed in any one of the telescopic box-shaped modules 60, 60', 60".
  • the first box-shaped module 60' may support besides the elements mentioned above also the electrovalve unit 37, 38.
  • control device 10 comprises one or more sensors for detecting the temperature of the thermal carrier fluid that is intended to circulate in the radiator 10 and the electronic control unit 40 is configured to command or interrupt the supply of the thermal carrier fluid in the radiator 10 during cooling in the hydraulic mode if the temperature of the thermal carrier fluid falls below a lower threshold value.
  • cooling in the hydraulic mode it is meant to indicate the operating mode of the radiator 10 in which the thermal carrier fluid circulates at a low temperature, for example comprised between 5°C and 25°C, in order to refrigerate the room where the radiator 10 is installed.
  • the electronic control unit 40 commands the electrovalve unit 37, 38 to close the fluid connection, the control of which is carried out by the same. It is to be noted that the interruption of the supply of the thermal carrier fluid in the radiator 10 occurs both in the case wherein the electrovalve unit closes the fluid connection with the supply line fitting and in the case wherein the electrovalve unit closes the fluid connection with the exit line fitting. In fact, also in the latter case the fluid circulation in the radiator 10 is substantially blocked.
  • control device 30 comprises a thermostatic valve configured to close one of the fluid connections between the radiator 10 and the hydraulic system when the temperature of the thermal carrier fluid falls below a lower threshold value.
  • the electronic control unit 40 may further be configured to switch on the electric heater 35, when the temperature of the fluid falls below a temperature corresponding to the dew point in order to avoid the formation of annoying condensation on the walls of the radiator 10.
  • the method for controlling the radiator 10 provides, in the first place, the step wherein such radiator 10 is installed on a wall connecting it to a hydraulic distribution system; this means to connect in a suitable manner as described above also the control device 30 comprised in said radiator 10.
  • control method comprises the steps:
  • the power-on step of the electric heater 35 and of the closing of the fluid connection controlled by the electrovalve unit 37, 38 may be implemented in any reciprocal chronological order.
  • control method during the cooling in the hydraulic mode provides the steps:
  • control device of the radiator of the electro-hydraulic type comprising the said control device and the control method of such radiator, which are object of the present invention, as well as the relative advantages are clear from the above description.
  • control device 10 allows the converting of a radiator of the hydraulic type into one of the electro-hydraulic type in a simple and easy way without having to necessarily resort to brickwork to move one or more distribution system fittings.
  • the three-way junction element allows the connecting of the control device with a hydraulic fitting substantially coaxial with the respective column element of the radiator.
  • the electronic control unit of the control device allows the turning on of the electric heater in any operating condition of the radiator avoiding energy waste since before such power-on inhibits the forced circulation of the thermal carrier fluid within the radiator.

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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-Pressure Circuits (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Control Of Resistance Heating (AREA)
EP17199025.2A 2016-10-28 2017-10-27 Dispositiv de pilotage pour radiateur, radiateur électrohydraulique avec cet dispositiv de pilotage et procédé pour contrôler le radiateur Withdrawn EP3315868A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102016000109456A IT201600109456A1 (it) 2016-10-28 2016-10-28 Dispositivo di controllo per un calorifero, calorifero di tipo elettro-idraulico comprendente tale dispositivo di controllo, metodo di controllo di detto calorifero.

Publications (1)

Publication Number Publication Date
EP3315868A1 true EP3315868A1 (fr) 2018-05-02

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP17199025.2A Withdrawn EP3315868A1 (fr) 2016-10-28 2017-10-27 Dispositiv de pilotage pour radiateur, radiateur électrohydraulique avec cet dispositiv de pilotage et procédé pour contrôler le radiateur

Country Status (2)

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EP (1) EP3315868A1 (fr)
IT (1) IT201600109456A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113994834A (zh) * 2021-12-08 2022-02-01 胡子良 一种温室大棚用加湿型暖气片

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984002765A1 (fr) * 1983-01-07 1984-07-19 Anton Schwarz Systeme de commande pour chauffage a combinaison
EP0617238A1 (fr) * 1993-03-22 1994-09-28 KERMI GmbH Dispositif de chauffage et son contrôle
DE29812233U1 (de) * 1998-07-09 1998-09-17 F W Oventrop Gmbh & Co Kg Anschlußarmatur für Heizkörper mit Zusatzheizung
EP0962711A1 (fr) * 1998-06-05 1999-12-08 Arbonia Ag Radiateur
DE202010012695U1 (de) * 2010-09-17 2010-12-09 Kermi Gmbh Heizkörper mit Lüfterbaugruppe und Elektroheizstab
EP3067638A1 (fr) * 2015-03-10 2016-09-14 Deltacalor S.r.L. Chauffage de serviette du type électrohydraulique ou hydraulique avec des zones de chauffage différenciées

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984002765A1 (fr) * 1983-01-07 1984-07-19 Anton Schwarz Systeme de commande pour chauffage a combinaison
EP0617238A1 (fr) * 1993-03-22 1994-09-28 KERMI GmbH Dispositif de chauffage et son contrôle
EP0962711A1 (fr) * 1998-06-05 1999-12-08 Arbonia Ag Radiateur
DE29812233U1 (de) * 1998-07-09 1998-09-17 F W Oventrop Gmbh & Co Kg Anschlußarmatur für Heizkörper mit Zusatzheizung
DE202010012695U1 (de) * 2010-09-17 2010-12-09 Kermi Gmbh Heizkörper mit Lüfterbaugruppe und Elektroheizstab
EP3067638A1 (fr) * 2015-03-10 2016-09-14 Deltacalor S.r.L. Chauffage de serviette du type électrohydraulique ou hydraulique avec des zones de chauffage différenciées

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113994834A (zh) * 2021-12-08 2022-02-01 胡子良 一种温室大棚用加湿型暖气片

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