DE102018219714A1 - Heat transfer device for a fluid exchange device - Google Patents

Abstract

The invention relates to a heat transfer device for a fluid exchange device, in particular for a ventilation system, for tempering a fluid (14a; 14b, 14b '; 14c, 14c') flowing through the fluid exchange device, with at least one inlet channel (16a; 16b, 16b ') ; 16c, 16c ') for guiding the fluid (14a; 14b, 14b'; 14c, 14c '), with at least one outlet channel (18a; 18b, 18b'; 18c, 18c '), in particular for returning the fluid ( 14a; 14b, 14b '), and with at least one heat conducting unit (20a; 20b) arranged between the inlet duct (16a; 16b, 16b'; 16c, 16c ') and the outlet duct (18a; 18b, 18b'; 18c, 18c ') , 20b '; 20c, 20c') for an exchange of heat between the inlet duct (16a; 16b, 16b '; 16c, 16c') and the outlet duct (18a; 18b, 18b '; 18c, 18c').
It is proposed that the heat transfer device has at least one vibratory membrane element (22a; 22c, 22c ') arranged within the heat conduction unit (20a; 20b, 20b'; 20c, 20c ') for heat conduction depending on the vibration position between the membrane element (22a; 22c, 22c') ) and the inlet channel (16a; 16b, 16b '; 16c, 16c') and / or the outlet channel (18a; 18b, 18b '; 18c, 18c').

Description

State of the art

It is already a heat transfer device for a fluid exchange device for tempering a fluid flowing through the fluid exchange device with at least one inlet channel for guiding the fluid, with at least one outlet channel, in particular for returning the fluid, and with at least one arranged between the inlet channel and the outlet channel Thermal conduction unit for exchanging heat between the inlet duct and the outlet duct has been proposed.

Disclosure of the invention

The invention relates to a heat transfer device for a fluid exchange device, in particular for a ventilation system, for tempering a fluid flowing through the fluid exchange device, with at least one inlet channel for guiding the fluid, with at least one outlet channel, in particular for returning the fluid, and with at least one heat conduction unit arranged between the inlet duct and the outlet duct for exchanging heat between the inlet duct and the outlet duct.

It is proposed that the heat transfer device has at least one vibratable membrane element arranged within the heat conduction unit for heat conduction dependent on the vibration position between the membrane element and the inlet channel and / or the outlet channel.

A “fluid exchange device” is to be understood in particular to mean a device for exchanging a fluid located in a structurally delimited space, for example a container, a container, a room and / or a building. In particular, the fluid exchange device is connected to an operation with a fluid reservoir, in particular outside air. For example, the fluid exchange device is designed as a mass transfer device. The fluid exchange device, in particular the fluid exchange device designed as a mass exchange device, is preferably provided for a direct mass exchange between the space and the fluid reservoir. In particular, the inlet channel and / or the outlet channel are / are provided for fluidically connecting the space to the fluid reservoir. The fluid is preferably designed as air, in particular as a breathable gas mixture. The heat transfer device is preferably provided for tempering the fluid flowing into the room. The inlet duct is preferably provided to guide the fluid flowing into the space along the heat conduction unit. The outlet channel is preferably provided to guide the fluid flowing out of the space along the heat conduction unit. The heat transfer device is preferably provided to deliver thermal energy to the fluid flowing through the inlet channel and / or to absorb it from the fluid flowing through the inlet channel. The heat transfer device is preferably provided for exchanging heat between the fluid flowing into the space and the fluid flowing out of the space.

Advantageously, in order to achieve an, in particular alternative, solution according to the invention, the task of efficient, controllable and / or environmentally friendly temperature control of a room, in particular heat transfer to the fluid and / or from the fluid within the room, the heat transfer device can be carried out independently of an orientation of the outlet channel and / or the inlet channel, in particular relative to the room. In particular, an inlet opening and an outlet opening of the inlet channel can both be arranged on a side of the heat transfer device facing the space or on different sides of the heat transfer device. In particular, an inlet opening and an outlet opening of the outlet channel can both be arranged on a side of the heat transfer device facing the space or on different sides of the heat transfer device. In particular, in a further embodiment, the fluid exchange device is designed as a fluid treatment device. The fluid exchange device, in particular in the further embodiment, is preferably provided to at least partially supply the fluid from the room to the heat transfer device, to prepare it there, in particular to temper it, and to return it to the room. In one configuration of the fluid exchange device as a fluid treatment device, the heat transfer device preferably has at least one inlet channel for guiding the fluid, at least one outlet channel, in particular for guiding another fluid, for tempering a fluid flowing through the fluid exchange device, at least one between the inlet channel and the Outlet duct arranged heat conduction unit for an exchange of heat between the inlet duct and the outlet duct and at least one vibratory membrane element arranged within the heat conduction unit for a heat conduction dependent on the vibration position between the membrane element and the inlet duct and / or the outlet duct. The inlet duct is preferably provided for this purpose, from the room into the Fluid exchange device to guide incoming fluid along the heat conduction unit. The outlet channel is preferably provided to guide the further fluid flowing into the fluid exchange device from the fluid reservoir along the heat conduction unit. The heat transfer device is preferably provided to deliver thermal energy to the fluid flowing through the inlet channel and / or to absorb it from the fluid flowing through the inlet channel. The heat transfer device is preferably provided to exchange thermal energy between the space and the fluid reservoir. It is conceivable that the space and the fluid reservoir contain the same fluid, in particular that the further fluid is the same as the fluid.

The heat transfer device preferably comprises at least two fluid channels, in particular the outlet channel and the inlet channel. The terms inlet duct and outlet duct only serve to differentiate and are in principle interchangeable. Preferably, a fluid channel of the heat transfer device, in particular the outlet channel and / or the inlet channel, comprises at least one hose element, a tube element, a shaft element and / or another channel element that appears useful to the person skilled in the art for guiding the fluid. Alternatively, the inlet channel and / or the outlet channel are / are designed to be open, in particular for free convection of the fluid along a surface of the inlet channel and / or the outlet channel. A, in particular open, fluid channel of the heat transfer device, in particular the outlet channel and / or the inlet channel, preferably comprises at least one rib element, a web element, a lamella element and / or another structural element for guiding the fluid along a surface. Preferably, a fluid channel of the heat exchanger device, in particular the outlet channel and / or the inlet channel, is of flat design, in particular as a flat channel, flat tube or the like, and / or is arranged in a flat manner, in particular in a serpentine manner, branching or the like formed and / or arranged ”, it should be understood that a smallest characteristic edge length of a smallest imaginary cuboid, which completely surrounds the object, is at least smaller by a factor of 2, preferably at least by a factor of 5, particularly preferably at least by a factor of 10 is the next larger characteristic edge length. The inlet duct and the outlet duct are preferably designed to be separate from one another in terms of fluid technology. In particular, the outlet duct and / or the inlet duct, in particular a largest outer surface of the outlet duct and a largest outer surface of the inlet duct, are arranged at least substantially parallel or concentrically to one another. A “largest outer surface” of a flatly arranged object is to be understood in particular as the largest outer surface of a smallest imaginary cuboid, which completely surrounds the object. “Essentially parallel” is to be understood here to mean, in particular, an orientation of a direction relative to a reference direction, in particular in a plane, the direction relative to the reference direction being a deviation in particular less than 8 °, advantageously less than 5 ° and particularly advantageously less than 2 °. An outlet opening and an inlet opening of the inlet duct and an outlet opening and an inlet opening of the outlet duct are preferably aligned to implement a countercurrent principle and / or a cross-flow principle.

The heat conduction unit preferably comprises at least one inlet contact unit. The inlet contact unit is preferably arranged on the inlet channel, in particular on the largest outer surface of the inlet channel, in particular for heat exchange between the inlet contact unit and the inlet channel, which is realized by heat conduction. In particular, the inlet contact unit is arranged on an inlet channel wall of the inlet channel. It is conceivable that the inlet contact unit and the inlet channel wall are at least partially formed in one piece. The heat conduction unit preferably comprises at least one outlet contact unit. The outlet contact unit is preferably arranged on the outlet channel, in particular on the largest outer surface of the outlet channel, in particular for heat exchange between the outlet contact unit and the outlet channel, which is realized by heat conduction. In particular, the outlet contact unit is arranged on an outlet channel wall of the outlet channel. It is conceivable that the outlet contact unit and the outlet channel wall are at least partially formed in one piece. The membrane element is preferably arranged between the outlet contact unit and the inlet contact unit. The membrane element is preferably mounted such that it can vibrate between the outlet contact unit and the inlet contact unit. The membrane element preferably touches the outlet contact unit in at least one outlet position of vibration of the membrane element. The membrane element preferably touches the inlet contact unit in at least one inlet position of the vibration of the membrane element, which differs in particular from the outlet position. The membrane element preferably touches either the outlet contact unit or the inlet contact unit in the inlet position and in the outlet position. It is also conceivable that the membrane element has a bearing and / or fixing area that is in contact with the inlet contact unit and / or the outlet contact unit regardless of the current vibration position. The storage and / or fixing area preferably comprises less than 25%, preferably less than 15%, particularly preferably less than 5% a total surface of the membrane element. The membrane element is preferably provided for exchanging heat with the outlet contact unit in the outlet position. The membrane element is preferably provided for exchanging heat with the inlet contact unit in the inlet position. The membrane element is preferably provided for heat transport mediated via the vibration between the inlet channel, in particular the inlet contact unit, and the outlet channel, in particular the outlet contact unit.

The membrane element is preferably flat. A largest outer surface of the membrane element is preferably arranged at least in a vibration position, in particular in a rest position, at least substantially parallel or concentrically to the largest outer surface of the outlet duct and / or to the largest outer surface of the inlet duct. A main direction of vibration of the membrane element is preferably at least substantially perpendicular to the largest outer surface of the membrane element. The membrane element preferably comprises an inlet-side contact surface which is provided for contact with the inlet contact unit, in particular with a contact element of the inlet contact unit. The membrane element preferably comprises an outlet-side contact surface which is provided for contact with the outlet contact unit, in particular with a contact element of the outlet contact unit. Preferably, the inlet-side or outlet-side contact surface is part of the largest outer surface of the membrane element or at least substantially parallel to the largest outer surface of the membrane element. The expression “essentially vertical” is intended here to define in particular an orientation of a direction relative to a reference direction, the direction and the reference direction, viewed in particular in one plane, enclosing an angle of 90 ° and the angle a maximum deviation of in particular less than 8 °, advantageously less than 5 ° and particularly advantageously less than 2 °.

“Provided” is to be understood in particular to mean specially programmed, specially set up, specially designed and / or specially equipped. The fact that an object is provided for a specific function should in particular be understood to mean that the object fulfills and / or executes this specific function in at least one application and / or operating state.

Due to the design of the heat transfer device according to the invention, heat conduction between the outlet duct and the inlet duct can advantageously be made flexible. In particular, a heat conductivity of the heat conduction unit which can advantageously be adapted during operation can be realized. Environmentally harmful refrigerants and / or solvents for heat exchange can advantageously be dispensed with. In addition, an advantageously low-noise heat transfer device can be provided.

It is further proposed that the membrane element has at least one thermocalorically active material, in particular is formed entirely from it. A “thermocalorically active material” should in particular be understood to mean a material that changes its temperature and / or the amount of heat stored in it depending on an environmental and / or state parameter of the material, which in particular depends on a temperature, an amount of heat and / or Heat radiation is designed differently. In particular, the thermally active material can be heated and / or cooled independently of heat transfer, in particular heat conduction, convection of a heat carrier and / or heat radiation. For example, the environmental and / or state parameter is the field strength of a magnetic and / or an electrical field on and / or in the material, a current flow in and / or along the material, an external pressure and / or an internal pressure, the current expansion and / or as a degree of compression of the material, as a rate of change of one of the aforementioned sizes or the like. The thermocalorically active material is particularly preferably designed as an electrocalorically active material. Alternatively, the thermocalorically active material is designed as a thermoelectrically active material, as a magnetocalorically active material, as an elastocalorically active material, as a barocalorically active material or the like. The membrane element is preferably formed at least essentially from the thermally active material. For example, the thermally active material is designed as a polymer-carbon nanotube laminate. For example, the polymer-carbon nanotube laminate comprises at least one polymer layer made of P (VDF-TrFe-CFE) and in particular single-walled carbon nanotubes. The membrane element preferably heats up when an electric field applied to the membrane element increases. The membrane element preferably cools down when an electric field applied to the membrane element is reduced. The fact that an object is “essentially made of a material” should in particular be understood to mean that at least 25%, preferably at least 50%, particularly preferably at least 75%, of a total volume of the object is made of the material. It is conceivable that the membrane element comprises a core, a framework, ribs, supports or the like made of another material, in particular around an elasticity of the Adapt membrane element. It is particularly conceivable that the storage and / or fixing area of the membrane element, in particular for thermal insulation, is formed from a different material and / or is coated with the other material. Due to the configuration according to the invention, heat conduction between the membrane element and the inlet channel and / or the outlet channel can advantageously be designed efficiently. In particular, an advantageously high temperature difference can be realized between the membrane element and the inlet channel and / or the outlet channel. In particular, the membrane element can advantageously act as a refrigerant-free heat pump. In particular, an advantageously large range of fluid temperatures, in particular before additional cooling and / or heating registers are switched on, can be achieved for the heat transfer device with advantageously low energy consumption. In particular, heat conduction can advantageously be adapted quickly.

It is further proposed that the heat transfer device comprises at least one thermoelectrode arranged on the membrane element for controlling or regulating a temperature of the membrane element. The thermoelectrode is preferably flat, in particular as a metal plate, metal foil or the like, and / or arranged in a flat manner, in particular as a wire spiral, as a wire mesh or the like. A largest outer surface of the thermoelectrode is preferably arranged at least substantially parallel to the largest outer surface of the membrane element. The largest outer surface of the thermoelectrode is preferably at least substantially the same size as the largest outer surface of the membrane element. The fact that two values are “essentially the same size” is to be understood in particular to mean that a ratio of the smaller value to the larger value is at least greater than 0.5, preferably greater than 0.75, particularly preferably greater than 0.9. The thermoelectrode is preferably arranged in the interior of the membrane element. In particular, the thermoelectrode divides the membrane element along the main direction of oscillation into an outlet side which faces the outlet channel and an at least substantially identical inlet side which faces the inlet channel. The thermoelectrode is preferably provided to generate an electric field on the membrane element. The heat transfer device preferably comprises at least one outlet electrode. The outlet electrode is preferably provided as a voltage reference for the thermoelectrode. In particular, the thermoelectrode is provided to generate an electric field between the thermoelectrode and the outlet electrode. The outlet side of the membrane element is preferably arranged between the thermoelectrode and the outlet electrode. The outlet electrode is preferably arranged on the membrane element. The outlet electrode is preferably arranged on the largest outer surface of the membrane element facing the outlet channel. The outlet electrode is preferably flat and / or arranged. The largest outer surface of the outlet electrode is preferably at least substantially the same size as the largest outer surface of the thermoelectrode. The heat transfer device preferably comprises at least one inlet electrode of an analog design and / or arrangement on the inlet side of the membrane element. The inlet electrode is preferably electrically connected to the outlet electrode. In particular, the heat transfer device comprises at least one star point for a simultaneous voltage supply of the inlet electrode and the outlet electrode, in particular with the at least substantially identical electrical voltage. A temperature of the membrane element, in particular of the electrocalorically active material, can preferably be controlled or regulated by changing the voltage difference between the thermoelectrode and the inlet electrode and / or the outlet electrode. A temperature of the membrane element can advantageously be easily controlled by the configuration according to the invention. In particular, an electrical voltage that controls the temperature of the membrane element can advantageously be reliably applied to the membrane element, in particular independently of a current vibration position of the membrane element.

It is further proposed that the heat transfer device comprises at least one movement electrode arranged on the membrane element for controlling or regulating an oscillation of the membrane element. The movement electrode is preferably designed and / or arranged analogously to the outlet electrode. The movement electrode is preferably formed in one piece with the outlet electrode. It is also conceivable that the moving electrode is formed separately from the outlet electrode. In particular, it is conceivable that the movement electrode and the outlet electrode are arranged stacked one above the other on the membrane element by means of an insulation layer, or that the movement electrode and the outlet electrode are offset in one plane, in particular toothed and spaced apart. The heat exchanger device preferably comprises a further movement electrode, which is analogously formed in one piece with or separately from the inlet electrode. The outlet contact unit and / or the inlet contact unit preferably comprise / comprises at least one docking electrode. The docking electrode is preferably flat and / or arranged. A largest outer surface of the docking electrode is preferably at least substantially parallel to the movement electrode and / or the arranged another movement electrode. The largest outer surface of the docking electrode is preferably at least substantially the same size as the largest outer surface of the movement electrode and / or the further movement electrode. The movement electrode and / or the further movement electrode are / are preferably provided for building up an electrostatic charge. The docking electrode is preferably provided by the application of a voltage to attract and / or repel the moving electrode. The movement electrode is preferably provided to transmit a force caused by the docking electrode to the membrane element. In particular, the movement electrode is provided to move the membrane element towards the docking electrode and / or to move it away from the docking electrode. The docking electrode and / or the movement electrode preferably has an electrical insulation layer in order to avoid a short circuit between the docking electrode and the movement electrode. The contact element of the outlet contact unit and / or the inlet contact unit is preferably designed as an electrical insulation layer. A current vibration position of the membrane element can advantageously be easily adjusted by the configuration according to the invention. In particular, an oscillation of the membrane element can be realized with components which are advantageously mounted with little movement, in particular with advantageously little wear.

In addition, it is proposed that the heat transfer device comprises at least one further membrane element and at least one further fluid channel, in particular one further outlet channel and / or one further inlet channel, the outlet channel, the membrane element, the inlet channel, the further membrane element and the further fluid channel, in particular the further outlet channel and / or the further inlet channel are arranged in layers on top of one another. The heat exchanger device preferably has a layered construction from a plurality of outlet channels and a plurality of inlet channels. In particular, at least one vibratable membrane element is arranged between an outlet channel and an inlet channel. In particular, the heat conduction unit has at least one inlet contact unit and / or one outlet contact unit for each membrane element. It is conceivable that a plurality of membrane elements are arranged on the same inlet contact unit and / or the same outlet contact unit. The outlet channel, the inlet channel, the membrane element, the further membrane element and / or the at least one further fluid channel, in particular the further outlet channel and / or the further inlet channel, are preferably flat and / or arranged. In particular, the outlet channel, the inlet channel, the membrane element, the further membrane element and / or the at least one further fluid channel, in particular the further outlet channel and / or the further inlet channel, form a layer of the heat transfer device. The outlet channel, the inlet channel, the membrane element, the further membrane element and / or the at least one further fluid channel, in particular the further outlet channel and / or the further inlet channel, are preferably spatially arranged at least substantially parallel to one another. The further membrane element is preferably designed analogously to the membrane element. The further fluid channel is preferably configured analogously to the outlet channel and / or the inlet channel. The outlet duct and the at least one further outlet duct are preferably arranged parallel to one another in terms of fluid technology. In particular, the outlet duct and the at least one further outlet duct form a branching outlet duct system, in particular with a common inlet opening and a common outlet opening. Alternatively, the outlet channel and the at least one further outlet channel are arranged in series with one another in terms of fluid technology. In particular, the outlet channel and the at least one further outlet channel form a cascading outlet channel system. The inlet duct and the at least one further inlet duct are preferably arranged parallel to one another in terms of fluid technology. In particular, the inlet duct and the at least one further inlet duct form a branching inlet duct system, in particular with a common inlet opening and a common outlet opening. Alternatively, the inlet duct and the at least one further inlet duct are arranged in series with one another in terms of fluid technology. In particular, the inlet duct and the at least one further inlet duct form a cascading inlet duct system. The configuration according to the invention makes it possible to provide an advantageously compact heat transfer device. In particular, an advantageously high ratio of outer surfaces to volume of the fluid channels can be achieved. In particular, an advantageously high, in particular adjustable, heat flow between the fluid channels can be realized. In particular, the heat transfer device is advantageously scalable. In particular, the heat transfer device has an advantageously low risk of the fluid channels freezing up.

It is further proposed that the heat transfer device comprises at least one further membrane element and at least one fluid heat conducting element arranged between the membrane element and the further membrane element. The fluid heat-conducting element is preferably designed as a fluid heat carrier, for example water. The heat transfer device preferably comprises at least one fluid channel designed as a heat transfer channel for guiding the fluid heat transfer medium. The heat transfer channel preferably forms a closed circuit for the fluid heat-conducting element. The further membrane element is preferably arranged in a further heat conduction unit. The heat transfer device preferably has an odd number of membrane elements and / or further membrane elements, which are arranged in particular in an odd number of heat conduction units and / or further heat conduction units of the heat transfer device. The membrane element and at least the one further membrane element are preferably arranged in series on the heat transfer channel in terms of fluid technology. However, it is also conceivable that the membrane element and at least one further membrane element are arranged in parallel in terms of fluid technology on the heat transfer duct. The heat transfer channel is preferably arranged on the outlet contact unit and / or the inlet contact unit of the heat conducting unit and / or the further heat conducting unit. The heat transfer duct is preferably arranged between the outlet contact unit of the heat conduction unit and / or the further heat conduction unit and the outlet duct. The heat transfer duct is preferably arranged between the inlet contact unit of the heat conducting unit and / or the further heat conducting unit and the inlet duct. The heat transfer duct is preferably arranged on the outlet duct and / or the inlet duct. In particular, the heat transfer duct is arranged separately from the outlet duct and / or the inlet duct in terms of fluid technology. In particular, a heat exchanger element, in particular a heat sink element and / or a radiator element, is arranged between the outlet duct and the heat carrier duct and / or between the inlet duct and the heat carrier duct, in particular for heat transfer between the outlet duct and the heat carrier duct and / or between the inlet duct and the heat carrier duct , in particular to a heat transfer mediated via the heat transfer duct between the outlet duct and the inlet duct. The heat transfer device preferably comprises at least one heat transfer fluid delivery unit, in particular for circulating the fluid heat conducting element within the heat transfer channel. Alternatively, the heat transfer duct is designed as a heat pipe. It is conceivable for the membrane element and the further membrane element to be produced from different materials, in particular from materials which have a maximum value for the electrocaloric effect in a different temperature range. The configuration according to the invention enables an advantageously high temperature rise between the outlet channel and the inlet channel to be achieved. In particular, the heat transfer device is advantageously scalable.

It is further proposed that the heat transfer device comprises at least one further membrane element and at least one solid heat-conducting element arranged between the membrane element and the further membrane element. In particular, a “solid heat-conducting element” is to be understood as a heat transfer medium that has a solid physical state at room temperature, for example copper. The further membrane element is preferably arranged in a further heat conduction unit. The heat transfer device preferably has an odd number of membrane elements and / or further membrane elements, which are arranged in particular in an odd number of heat conduction units and / or further heat conduction units of the heat transfer device. At least one solid heat-conducting element is preferably arranged between two membrane elements. At least one solid heat-conducting element preferably connects the outlet contact unit and / or the inlet contact unit of the heat-conducting unit to the outlet contact unit and / or the inlet contact unit of the further heat-conducting unit. At least one solid heat-conducting element is preferably arranged between the outlet contact unit of the heat-conducting unit and / or the further heat-conducting unit and the outlet channel. At least one solid heat-conducting element is preferably arranged between the inlet contact unit of the heat-conducting unit and / or the further heat-conducting unit and the inlet channel. In particular, a heat transfer element, in particular a heat sink element and / or radiator element, is arranged between the outlet channel and at least one solid heat-conducting element and / or between the inlet channel and at least one solid heat-conducting element, in particular for heat transfer between the outlet channel and the solid heat-conducting element and / or between the Inlet channel and the solid heat-conducting element, in particular for heat transfer between the outlet channel and the inlet channel mediated via the solid heat-conducting element. It is conceivable for the membrane element and the further membrane element to be produced from different materials, in particular from materials which have a maximum value for the electrocaloric effect in a different temperature range. The configuration according to the invention enables an advantageously high temperature rise between the outlet channel and the inlet channel to be achieved. In particular, the heat transfer device is advantageously scalable.

Furthermore, it is proposed that the heat transfer device has at least one additional membrane element, an additional solid heat-conducting element arranged on the additional membrane element and a solid heat-conducting element and the additional solid heat-conducting element connecting bridge element for heat exchange between the solid heat-conducting element and the additional solid heat-conducting element. The bridge element preferably consists of a thermally conductive material, in particular metal, particularly preferably copper. The bridge element preferably consists of the same material as the solid heat-conducting element and / or the further heat-conducting element. The membrane elements, in particular within heat-conducting units, and the solid heat-conducting elements are preferably arranged in layers on top of one another and / or next to one another. The bridge element preferably bridges at least two membrane elements, in particular the further membrane element and the additional membrane element. In particular, the bridge element bridges at least one further solid heat-conducting element of the heat transfer device, which is arranged between the solid heat-conducting element and the additional solid heat-conducting element, in particular between the further membrane element and the additional membrane element. The configuration according to the invention allows the heat exchanger device to be advantageously compact with an advantageous high temperature rise.

In addition, it is proposed that at least one bridge element be designed to be movable, in particular for controlling heat exchange between the solid heat-conducting element and the additional solid heat-conducting element. The heat transfer device preferably comprises a bearing element for movably mounting the bridge element, for example a rail, an axis of rotation, a translation axis or the like. In particular, the heat transfer device comprises at least one actuator and / or motor unit, for example a magnetic switch, a translational piezo actuator or the like, for moving the bridge element. The bridge element preferably has at least one heat-conducting position, in particular for connecting the solid heat-conducting element and the additional solid heat-conducting element. The bridge element preferably has at least one separation position, in particular for heat insulation of the solid heat-conducting element from the additional solid heat-conducting element. The bridge element is preferably not connected to any solid heat-conducting element in the separation position. However, it is also conceivable that the bridge element connects the solid heat-conducting element or the additional solid heat-conducting element with another heat-conducting element of the heat transfer device in the disconnected position. A temperature compensation between at least two solid heat-conducting elements can be controlled by the configuration according to the invention. In particular, a backflow of heat, in particular in a direction opposite to the direction of a heat flow caused by the membrane elements, can advantageously be kept low.

Furthermore, the invention is based on a method for operating a heat transfer device, in particular a heat transfer device according to the invention, for a fluid exchange device, in particular for a ventilation system, for tempering a fluid flowing through the fluid exchange device. It is proposed that heat conduction be set in at least one method step by means of an oscillation position of an oscillatable membrane element of the heat transfer device arranged within a heat conduction unit of the heat transfer device. The membrane element is preferably moved in the direction of a heat sink in at least one depression movement step. In particular, the outlet duct or the inlet duct acts as a heat sink. The membrane element is preferably moved in the direction of a heat source in at least one source movement step. In particular, the inlet duct or the outlet duct acts as a heat sink. Preferably, the membrane element in the lowering movement step and / or in the source movement step is achieved by applying, switching off and / or reversing the polarity of an electrical voltage between the moving electrode and the docking electrode of the outlet contact unit and / or by applying, switching off and / or reversing the polarity of a further electrical voltage between the further movement electrode and the docking electrode of the inlet contact unit are moved. In particular, the membrane element deforms during the sink movement step and / or the source movement step. In the sink movement step and / or the source movement step, the membrane element is preferably brought up to the docking electrode of the inlet contact unit and / or the outlet contact unit. In particular, after the lowering movement step, a lowering contact phase begins, in which in particular the membrane element is in thermal contact with the docking electrode of the inlet contact unit and / or the outlet contact unit. In particular, after the source movement step, a source contact phase begins, in which in particular the membrane element is in thermal contact with the docking electrode of the inlet contact unit and / or the outlet contact unit. The membrane element, in particular the electrocalorically active material of the membrane element, is preferably heated in at least one heating step during the sink contact phase. In the heating step, an electrical voltage is preferably built up between the thermoelectrode and the inlet electrode and / or the outlet electrode. It is conceivable that the heating step before the Sink contact phase, especially during the sink movement step, takes place and / or begins. Preferably, heat is given off from the membrane element to the heat sink in a heat release step during the sink contact phase. In particular, the electrical voltage between the thermoelectrode and the inlet electrode and / or the outlet electrode is maintained in a heat release step. The membrane element, in particular the electrocalorically active material of the membrane element, is preferably cooled in at least one cooling step during the source contact phase. An electrical voltage between the thermoelectrode and the inlet electrode and / or the outlet electrode is preferably reduced in the cooling step. It is conceivable that the cooling step takes place and / or begins before the source contact phase, in particular during the source movement step. Preferably, the membrane element absorbs heat from the heat source in a heat absorption step during the source contact phase. The inventive design of the method advantageously allows flexible conduction of heat between the outlet duct and the inlet duct. In particular, a thermal conductivity of the thermal conduction unit can advantageously be adapted during operation.

Furthermore, it is proposed that in at least one method step an electrocaloric cycle of the membrane element and an oscillation cycle of the membrane element are shifted in time in order to adapt a direction of a heat flow between the outlet channel and the inlet channel. The oscillation cycle preferably comprises at least one outlet movement step, in particular for a movement of the membrane element in the direction of the outlet channel. The oscillation cycle preferably comprises at least one inlet movement step, in particular for a movement of the membrane element in the direction of the inlet channel. The electrocaloric cycle preferably comprises at least the one heating step. The electrocaloric cycle preferably comprises at least the one heat release step. The electrocaloric cycle preferably comprises at least the one cooling step. The electrocaloric cycle preferably comprises at least the one heat absorption step. The oscillation cycle and the electrocaloric cycle preferably have the same cycle duration. It is conceivable that the oscillation cycle and the electrocaloric cycle are carried out synchronously. Alternatively, the oscillation cycle triggers the electrocaloric cycle and / or vice versa. In particular, a starting point of the oscillation cycle and a starting point of the electrocaloric cycle are matched to one another. In particular, an oscillation cycle is predetermined by an electrical voltage curve between the movement electrode and the docking electrode of the outlet contact unit and / or the electrical voltage curve between the further movement electrode and the docking electrode of the inlet duct unit. In particular, an electrocaloric cycle is predetermined by the electrical voltage profile between the thermoelectrode and the outlet electrode and / or inlet electrode. Preferably, in at least one method step, a voltage curve between the thermoelectrode and the inlet electrode and / or outlet electrode, and a voltage curve between the movement electrode, the further movement electrode and the docking electrode of the outlet contact unit and / or the inlet contact unit are shifted in time with respect to one another. A functionality of the inlet duct and the outlet duct as a heat source or as a heat sink is preferably changed, in particular interchanged, by shifting the oscillation cycle against the electrocaloric cycle. The method preferably comprises at least one cooling mode. In particular, in the cooling mode, the inlet movement step coincides with the source movement step. In particular, the inlet duct acts as a heat source. In particular, in the cooling mode, the outlet movement step coincides with the sink movement step. In particular, the outlet channel functions as a heat sink in the cooling mode. The method preferably comprises at least one heating mode. In particular, in the heating mode, the inlet movement step coincides with the sink movement step. In particular, the inlet duct functions as a heat sink in the heating mode. In particular, in the heating mode, the outlet movement step coincides with the source movement step. In particular, the outlet channel acts as a heat source in the heating mode. A direction of the heat flow between the inlet duct and the outlet duct can advantageously be reversed by the configuration according to the invention. In particular, two operating modes for preheating or precooling the fluid flowing through the inlet channel can advantageously be implemented. In particular, the two operating modes can advantageously only be implemented by adapting the control, in particular without additional components.

It is also proposed that in at least one method step a The heat flow density between the inlet channel and the outlet channel is controlled or regulated by means of an electrical field strength applied to the membrane element and / or by means of an oscillation frequency of the membrane element. The electrical field strength is preferably produced by means of a voltage difference between the thermoelectrode and the inlet electrode and / or the outlet electrode. In particular, the “heat flow density between the inlet duct and the outlet duct” should be understood to mean the heat flow density between the inlet duct and the outlet duct averaged over an electrocaloric cycle. In at least one method step, the heat flow density between the inlet channel and the outlet channel is preferably set by means of the maximum electric field strength applied to the membrane element during an electrocaloric cycle, in particular in terms of amount. In particular, in at least one method step, the heat flow density between the inlet duct and the outlet duct is set by means of a difference between the maximum and minimum electrical field strength applied to the membrane element during an electrocaloric cycle, in particular in terms of amount. The cycle duration of the oscillation cycle and / or the electrocaloric cycle is preferably changed in at least one method step in order to set a heat flow density. In particular, a cycle time is reduced in order to increase a heat flow density. In particular, a cycle duration is increased in order to reduce a heat flow density. The configuration according to the invention advantageously allows the heat flow density between the inlet duct and the outlet duct to be flexibly adapted.

Furthermore, it is proposed that the method comprises at least one contact expansion step, in which a contact surface of the membrane element is at least substantially completely fixed to a contact element of the heat conduction unit via an electrostatic force. Preferably, at least one contact expansion step is carried out during the beginning of the source contact phase and / or the sink contact phase. During the contact expansion step, the membrane element is preferably pressed against the outlet contact unit or the inlet contact unit by an opposite electrical polarity of the movement electrode and the docking electrode of the outlet contact unit or by an opposite electrical polarity of the further movement electrode and the docking electrode of the inlet contact unit. In the contact expansion step, the inlet-side contact surface of the membrane element is preferably pressed at least substantially completely against the inlet contact unit, in particular against the contact element of the inlet contact unit. In a further contact expansion step, the outlet-side contact surface of the membrane element is preferably pressed at least substantially completely against the outlet contact unit, in particular against the contact element of the outlet contact unit. The fact that a surface is “essentially completely” pressed against an object is to be understood in particular to mean that at least 50%, preferably at least 75%, particularly preferably, at least 95% of the surface rests on the object. The heating step or the cooling step preferably takes place after a completed contact expansion step. The contact expansion step is preferably set by extending the source movement step or the sink movement step by a retention time after the membrane element has first contacted the outlet contact unit or the inlet contact unit. Due to the configuration according to the invention, heat conduction can advantageously be designed efficiently. In particular, an effective contact area to a heat conduction can advantageously be made large. In particular, heat exchange can advantageously take place quickly via the contact surface.

It is further proposed that the method include a thermal insulation mode in which vibration of the membrane element is blocked. In the heat insulation mode, the membrane element is preferably held in a fixed oscillation position, in particular to interrupt thermal conduction between the membrane element and the outlet contact unit and / or inlet contact unit. In particular, the electrocaloric cycle is stopped in the thermal insulation mode. A storage and / or fixing area of the membrane element and / or a storage and / or fixing unit of the heat transfer device for the membrane element preferably includes a heat insulation layer and / or is at least partially made of a heat insulation material. The configuration according to the invention can advantageously be used to simply prevent heat exchange between the inlet duct and the outlet duct. In particular, a further operating mode can advantageously be realized only by adapting the control, in particular without additional components. In particular, the thermal insulation mode can advantageously be used instead of a summer bypass. In particular, an advantageously low-component and / or compact heat transfer device can be provided.

It is further proposed that in at least one method step a movement of a movably mounted bridge element is synchronized with at least one oscillation cycle of the membrane element and / or an additional membrane element of the heat transfer device. A heat flow direction is preferably defined in at least one method step, for example from the outlet channel to the inlet channel or from the inlet channel to the outlet channel. In particular, the membrane element and the additional membrane element are arranged one after the other along the heat flow direction. In particular, the oscillation cycle and / or the electrocaloric cycle of the Membrane element and / or the additional membrane element matched to one another to implement the heat flow direction. In particular, a heat release step of the membrane element is shifted in time against a heat release step of the additional membrane element. In particular, the heat release step for the membrane element is carried out simultaneously with the heat absorption step for the additional membrane element. In particular, the bridge element is moved into the heat-conducting position when a membrane element arranged upstream in the heat flow direction, in particular the membrane element, changes to the heat release step, in particular during the lowering movement step and / or during the source movement step for the membrane element arranged upstream in the heat flow direction. In particular, the bridge element is moved into the separation position when a membrane element downstream in the heat flow direction, in particular the additional membrane element, changes to the heat release step, in particular during the lowering movement step and / or during the source movement step for the membrane element downstream in the heat flow direction. It is conceivable that the bridge element carries out a continuous oscillation between the separation position and the heat-conducting position, in particular a frequency of the oscillation being coordinated at regular and / or irregular intervals with a frequency of the oscillation cycle of the membrane element and / or the additional membrane element. Alternatively, individual movement steps of the bridge element, for example into the heat-conducting position and / or into the separation position, are triggered by a control signal for the oscillation cycle and / or for the electrocaloric cycle. The refinement of heat, in particular in a direction opposite to the direction of a heat flow caused by the membrane elements, can advantageously be kept low by the configuration according to the invention. In particular, the heat transfer device can advantageously be operated efficiently.

In addition, a fluid exchange device, in particular a ventilation system, with at least one heat transfer device according to the invention and / or with a control or regulating unit for carrying out a method according to the invention is proposed. The exchange of the fluid preferably serves to temper and / or change a fluid composition within the room, for example to change a water content, a carbon dioxide content and / or an oxygen content of the fluid in the room. The fluid exchange device preferably comprises at least one housing, in particular for accommodating the heat transfer device and / or the control or regulating unit. The fluid exchange device preferably comprises at least one external fluid channel, in particular to an inlet of the fluid, in particular air, into the fluid exchange device from an external fluid reservoir, in particular the atmosphere. The external fluid channel preferably opens into the inlet channel. The fluid exchange device preferably comprises an inlet channel, in particular for feeding the fluid flowing in via the external fluid channel into a space. The inlet duct preferably opens into the inlet duct. The fluid exchange device preferably comprises at least one fluid delivery unit, in particular a pump unit and / or a compressor unit, in particular for drawing in fluid from the fluid reservoir. The fluid delivery unit is preferably arranged in the external fluid channel. The fluid delivery unit preferably comprises at least one filter element for cleaning the fluid sucked into the external fluid channel. The filter element is preferably arranged in the external fluid channel. The fluid exchange device preferably comprises at least one drain channel, in particular for returning the fluid located in the room to the fluid exchange device. The outlet channel preferably opens into the outlet channel. The fluid exchange device preferably comprises at least one continuous fluid channel, in particular for feeding the fluid flowing in through the discharge channel into the external fluid reservoir and / or a further external fluid reservoir which is separate from the fluid reservoir. The outlet channel preferably opens into the continuous fluid channel. The fluid exchange device preferably comprises at least one further fluid delivery unit, in particular a pump unit and / or a compressor unit, in particular for drawing in fluid from the room. The fluid delivery unit is preferably arranged in the outflow channel. The fluid delivery unit preferably comprises at least one further filter element for cleaning the fluid sucked into the discharge channel. The configuration according to the invention makes it possible to provide an advantageously compact, low-component, low-noise and / or low-maintenance fluid exchange device. In particular, the fluid exchange device can also advantageously be used effectively in buildings with low insulation standards.

The heat transfer device according to the invention, the method according to the invention and / or the fluid exchange device according to the invention should / should not be limited to the application and embodiment described above. In particular, the heat transfer device according to the invention, the method according to the invention and / or the fluid exchange device according to the invention can perform one of a number of individual elements mentioned here to fulfill a function described herein, Components and units as well as procedural steps have different numbers. In addition, in the value ranges specified in this disclosure, values lying within the limits mentioned are also to be regarded as disclosed and to be used as desired.

list of figures

Further advantages result from the following description of the drawing. Five exemplary embodiments of the invention are shown in the drawing. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into useful further combinations.

• 1 eine schematische Darstellung einer erfindungsgemäßen Fluidaustauschvorrichtung mit einer sich überkreuzenden Führung und Rückführung eines Fluids,
• 2 eine schematische Darstellung einer erfindungsgemäßen Wärmeübertragervorrichtung in Schichtbauweise,
• 3 eine schematische Darstellung einer Wärmeleiteinheit der erfindungsgemäßen Wärmeübertragervorrichtung,
• 4 ein Flussdiagramm eines erfindungsgemäßen Verfahrens zu einem Betrieb der erfindungsgemäßen Wärmeübertragervorrichtung,
• 5 eine schematische Darstellung einer Ansteuerung über einen Schwingungszyklus eines Membranelements der erfindungsgemäßen Wärmeübertragervorrichtung,
• 6 eine schematische Darstellung einer alternativen erfindungsgemäßen Fluidaustauschvorrichtung mit einer parallelen Führung und Rückführung eines Fluids,
• 7 eine schematische Darstellung einer erfindungsgemäßen Wärmeübertragervorrichtung für die alternative Fluidaustauschvorrichtung,
• 8 eine schematische Darstellung einer alternativen erfindungsgemäßen Wärmeübertragervorrichtung für die alternative Fluidaustauschvorrichtung,
• 9 eine schematische Darstellung einer weiteren alternativen erfindungsgemäßen Fluidaustauschvorrichtung, insbesondere einer Wärmepumpe,
• 10 eine schematische Darstellung einer weiteren alternativen erfindungsgemäßen Wärmeübertragervorrichtung mit einem fluiden Wärmeleitelement,
• 11 eine schematische Darstellung einer zusätzlichen alternativen erfindungsgemäßen Wärmeübertragervorrichtung mit soliden Wärmeleitelementen und
• 12 eine schematische Darstellung eines Brückenelements der zusätzlichen alternativen erfindungsgemäßen Wärmeübertragervorrichtung.

Show it:

• 1 1 shows a schematic representation of a fluid exchange device according to the invention with a crossing and returning of a fluid,
• 2 1 shows a schematic representation of a heat transfer device according to the invention in a layered construction,
• 3 1 shows a schematic representation of a heat conduction unit of the heat transfer device according to the invention,
• 4 2 shows a flowchart of a method according to the invention for operating the heat transfer device according to the invention,
• 5 1 shows a schematic illustration of a control via an oscillation cycle of a membrane element of the heat transfer device according to the invention
• 6 1 shows a schematic illustration of an alternative fluid exchange device according to the invention with parallel guidance and return of a fluid,
• 7 1 shows a schematic representation of a heat transfer device according to the invention for the alternative fluid exchange device,
• 8th 1 shows a schematic representation of an alternative heat transfer device according to the invention for the alternative fluid exchange device,
• 9 1 shows a schematic representation of a further alternative fluid exchange device according to the invention, in particular a heat pump,
• 10 1 shows a schematic illustration of a further alternative heat transfer device according to the invention with a fluid heat-conducting element,
• 11 is a schematic representation of an additional alternative heat transfer device according to the invention with solid heat-conducting elements and
• 12 is a schematic representation of a bridge element of the additional alternative heat transfer device according to the invention.

Description of the embodiments

1 shows a fluid exchange device 12a , In particular, the fluid exchange device 12a designed as a ventilation system. In particular, the fluid exchange device 12a for an exchange of a fluid 14a in a room 15a intended. The fluid exchange device 12a has a control or regulating unit 62a to carry out a procedure 40a on. The fluid exchange device 12a has a heat transfer device 10a on. The heat transfer device 10a for the fluid exchange device 12a is for a temperature control by the fluid exchange device 12a flowing fluid 14a intended. The heat transfer device 10a comprises at least one inlet channel 16a , The inlet duct 16a is to guide the fluid 14a intended. The heat transfer device 10a comprises at least one outlet channel 18a , The outlet duct 18a is to return the fluid 14a intended. The heat transfer device 10a includes at least one between the inlet duct 16a and the outlet duct 18a arranged heat conduction unit 20a (not shown here, see 2 to 4 ). The heat conduction unit 20a is for an exchange of heat between the inlet duct 16a and the outlet duct 18a intended. The heat transfer device 10a comprises at least one vibratable membrane element 22a (not shown here, see 3 and 4 ). The membrane element 22a is inside the heat conduction unit 20a arranged. The membrane element 22a is to a vibration position-dependent heat conduction between the membrane element 22a and the inlet duct 16a and / or the outlet duct 18a intended. The fluid exchange device preferably comprises 12a at least one housing 64a , in particular to accommodate the heat transfer device 10a and / or the control or regulating unit 62a , The fluid exchange device preferably comprises 12a at least one external fluid channel 66a , in particular to an inlet of the fluid 14a , in particular air, into the fluid exchange device 12a from an external fluid reservoir, especially the atmosphere. The external fluid channel preferably opens 66a into the inlet duct 16a , The fluid exchange device preferably comprises 12a an inlet channel 68a , in particular for feeding the via the external fluid channel 66a inflowing fluid 14 in the room 15a , The inlet duct preferably opens 16a in the inlet channel 68a , The fluid exchange device preferably comprises 12a at least one fluid delivery unit 70a , in particular a pump unit and / or a compressor unit, in particular for drawing in the fluid 14a from the fluid reservoir. The fluid delivery unit is preferably 70a in the external fluid channel 66a arranged. The fluid delivery unit preferably comprises 70a at least one filter element 72a for cleaning the in the external fluid channel 66a sucked fluid 14 , The filter element is preferably 72a in the external fluid channel 66a arranged. The fluid exchange device preferably comprises 12a at least one drain channel 74a , especially for repatriating yourself in the room 15a located fluid 14a into the fluid exchange device 12a , The drain channel preferably opens 74a into the exhaust duct 18a , The fluid exchange device preferably comprises 12a at least one fluid channel 76a , in particular for feeding the through the drain channel 74a inflowing fluid 14a into the external fluid reservoir and / or a further external fluid reservoir which is separate from the fluid reservoir. The outlet channel preferably opens 18a in the Fortfluidkanal 76a , The fluid exchange device preferably comprises 12a at least one further fluid delivery unit 78a , in particular a pump unit and / or a compressor unit, in particular for sucking in fluid 14a out of the room 15a , The further fluid delivery unit is preferably 78a in the drain channel 74a arranged. The fluid exchange device preferably comprises 12a at least one additional filter element 80a , to clean the in the drain channel 74a sucked fluid 14a , The guide and the return preferably cross over one another within the heat transfer device 10a , Preferably the heat transfer device 10a , the fluid delivery unit 70a and / or the further fluid delivery unit 78a from the control unit 62a controlled.

2 shows a cross section BB of the heat transfer device 10a , The heat transfer device 10a comprises at least one further membrane element 28a-31a , The heat transfer device 10a comprises at least one further fluid channel, in particular a further outlet channel 32a . 34a and / or a further inlet channel 36a . 38a , The outlet duct 18a , the membrane element 22a , the inlet duct 16a , the further membrane element 28a -31a and the further fluid channel, in particular the further outlet channel 32a . 34a and / or the further inlet duct 36a . 38a , are layered on top of each other. The heat transfer device preferably has 10a a layered construction from a plurality of outlet channels 18a . 32a . 34a and a plurality of inlet channels 16a . 36a . 38a on. In particular, there is between each outlet channel 18a . 32a . 34a and an inlet duct 16a . 36a . 38a at least one vibratable membrane element 22a . 28a - 31a inside the heat conduction unit 20a arranged. Preferably, the outlet channel 18a , the inlet duct 16a , the membrane element 22a , the further membrane element 28a - 31a and / or the at least one further fluid channel, in particular the further outlet channel 32a . 34a and / or the further inlet duct 36a . 38a , flat and / or arranged. Preferably, the outlet channel 18a , the inlet duct 16a , the membrane element 22a , the further membrane element 28a - 31a and / or the at least one further fluid channel, in particular the further outlet channel 32a . 34a and / or the further inlet duct 36a . 38a , arranged in spatially at least substantially parallel planes. Inputs and outputs of two adjacent fluid channels are preferably arranged according to a cross-flow principle. Alternatively, inputs and outputs of two adjacent fluid channels are arranged according to a counterflow principle (cf. 6 to 8th ). Preferably, the outlet channel 18a and the at least one further outlet channel 32a . 34a Fluidically arranged in parallel to each other. In particular, form the outlet channel 18a and the at least one further outlet channel 32a . 34a a branching outlet duct system, in particular with a common inlet opening and a common outlet opening. Alternatively, the outlet duct 18a and the at least one further outlet channel 32a . 34a fluidly arranged in series with each other (cf. 8th ). Preferably applies to the inlet duct 16a and the at least one further inlet channel 36a . 38a an arrangement similar to that for the exhaust duct 18a and the at least one further outlet channel 32a . 34 ,

3 shows the heat conduction unit 20a with the membrane element arranged therein 22a , The heat conducting unit preferably has 20a an outlet contact unit 82a on. The outlet contact unit is preferably 82a on the outlet duct 18a , in particular on a largest outer surface of the outlet duct 18a , arranged. The outlet contact unit is preferably 82a , in particular in layers, on an outlet duct wall 84a of the exhaust duct 18a applied, in particular printed on, sprayed on, glued on and / or by means of another method which seems sensible to a person skilled in the art, integrally with the outlet channel wall 84a connected. The outlet channel wall is preferably 84a formed from a thermally conductive material, in particular metal and / or ceramic. The outlet contact unit preferably comprises 82a a heat-conducting, electrical insulation layer 86a for electrical insulation of the outlet contact unit 82a from the outlet duct wall 84a , The heat conducting unit preferably comprises 20a an analog inlet contact unit 88a on an inlet duct wall 90a of the inlet duct 16a , in particular with a heat-conducting, electrical insulation layer 92a , The electrical insulation layers are preferably 86a . 92a made from Kapton. The membrane element is preferably 22a between the outlet contact unit 82a and the inlet contact unit 88a arranged. Preferably, the heat transfer device comprises 10a at least one storage and / or fixing unit 94a for storage and / or fixation of the membrane element 22 , The storage and / or fixing unit preferably comprises 94a at least one clamping element 96a , The membrane element is preferably 22a between the clamping element 96a and the inlet contact unit 88a trapped. The storage and / or fixing unit preferably comprises 94a at least one other clamping element 98a , The membrane element is preferably 22a between the further clamping element 98a and the outlet contact unit 82a trapped. Preferably, the clamping element 96a and / or the further clamping element 98a as a spacer between the outlet contact unit 82 and the inlet contact unit 88a intended. The clamping element preferably consists 96a and / or the further clamping element 98a from a, in particular heat-insulating, plastic, for example polymethyl methacrylate.

The heat transfer device 10a comprises at least one on the membrane element 22a arranged movement electrode 26a to control or regulate an oscillation 27a of the membrane element 22a , The movement electrode is preferably 26a on a largest outer surface of the membrane element 22a arranged. Preferably, the heat transfer device comprises 10a at least one further movement electrode 100a , In particular, the further moving electrode 100a at least substantially parallel to the moving electrode 26a on the membrane element 22a arranged. In particular, the movement electrode closes 26a and the further movement electrode 100a the membrane element 22a , in particular in a main direction of vibration 27a , on. The movement electrode is preferably 26a on the the outlet duct 18a facing side of the membrane element 22a arranged. The further movement electrode is preferably 100a on the the inlet duct 16a facing side of the membrane element 22a arranged. Preferably forms a surface of the moving electrode 26a an outlet-side contact surface 48a , in particular for the production of a thermal contact of the membrane element 22a with the outlet contact unit 82a , Preferably forms a surface of the further movement electrode 100a an inlet-side contact surface 50a , in particular for the production of a thermal contact of the membrane element 22a with the inlet contact unit 88a , The outlet contact unit preferably comprises 82a an electrically insulating contact element 56a for establishing thermal contact with the membrane element 22a , The inlet contact unit preferably comprises 88a an electrically insulating contact element 58a for establishing thermal contact with the membrane element 22a , The outlet contact unit preferably comprises 82a between the contact element 56a the outlet contact unit 82a and the electrical insulation layer 86a a docking electrode 102 , The inlet contact unit preferably comprises 88a between the contact element 58a the inlet contact unit 88a and the electrical insulation layer 92a a docking electrode 104a , The contact elements are preferably 56a . 58a made of polyamide. In particular, the moving electrode 26a together with the docking electrode 102 the outlet contact unit 82a provided to attract and / or repel one another, in particular cyclically, via an electrostatic charge. In particular, the further moving electrode 100a together with the docking electrode 104a the inlet contact unit 88a provided to attract and / or repel one another, in particular cyclically, via an electrostatic charge. In particular, the moving electrode 26a and / or the further movement electrode 100a provided an attractive and or repulsive force on the membrane element 22a transferred to. The docking electrodes are preferably 102 . 104a made from a silver nanowire.

The membrane element 22a has at least one thermally active material. The membrane element is preferably 22a formed from the thermally active material. The heat transfer device 10a comprises at least one on the membrane element 22 arranged thermoelectrode 24a to control or regulate a temperature of the membrane element 22a , In particular, the thermoelectrode divides 24a the membrane element 22a , especially one for vibration 27a at least substantially vertical plane, in two at least substantially equal halves. Preferably, the heat transfer device comprises 10a at least one outlet electrode 106a which in particular on a the outlet duct 18a facing outer surface of the membrane element 22a is arranged. Preferably, the outlet electrode 106a and the moving electrode 26a integrally formed. Preferably, the heat transfer device comprises 10a at least one inlet electrode 108a which in particular on a the inlet duct 16a facing outer surface of the membrane element 22a is arranged. Preferably, the inlet electrode 108a and the further movement electrode 100a integrally formed. In particular, the thermoelectrode 24a together with the inlet electrode 108a and / or the outlet electrode 106a provided via a change in the membrane element 22a applied electric field a temperature of the membrane element 22a to control.

4 shows the procedure 40a to operate the heat transfer device 10a for the fluid exchange device 12a , especially for a ventilation system. The procedure 40a is for tempering one through the fluid exchange device 12a flowing fluid 14a intended. In at least one process step of the process 40a becomes heat conduction by means of an oscillation position within a heat conduction unit 20a the heat transfer device 10a arranged vibratory membrane element 22a the heat transfer device 10a set. In at least one process step of the process 40a becomes a heat flow density between the inlet duct 16a and the outlet duct 18a by means of on the membrane element 22a applied electric field strength 42a and / or by means of an oscillation frequency of the membrane element 22a controlled or regulated. The oscillation cycle preferably comprises at least one outlet movement step 110a , in particular to a movement of the membrane element 22a towards the outlet duct 18a , The oscillation cycle preferably comprises at least one inlet movement step 112a , in particular to a movement of the membrane element 22a towards the inlet duct 16a , Preferably, in at least one sink movement step 114a the membrane element 22a moving towards a heat sink. The outlet duct acts in particular 18a or the inlet duct 16a as a heat sink. Preferably in at least one source moving step 116a the membrane element 22a moved towards a heat source. In particular, the inlet duct functions 16a or the outlet duct 18a as a heat sink. Preferably the membrane element 22a in the sink movement step 114a and / or in the source moving step 116a by applying, switching off and / or reversing the polarity of an electrical voltage between the moving electrode 26a and the docking electrode 102 the outlet contact unit 82a and / or by applying, switching off and / or reversing the polarity of a further electrical voltage between the further movement electrode 100a and the docking electrode 104a the inlet contact unit 88a emotional. Preferably in the lowering step 114a and / or the source moving step 116a the membrane element 22a to the inlet contact unit 88a and / or the outlet contact unit 82a introduced. In particular, begins after the lowering step 114a a sink contact phase 118a , in which in particular one of the contact areas 48a . 50a of the membrane element 22a in thermal contact with the inlet contact unit 88a and / or the outlet contact unit 82a stands. In particular, starts after the source move step 116a a source contact phase 120a , in which in particular one of the contact areas 48a . 50a of the membrane element 22a in thermal contact with the inlet contact unit 88a and / or the outlet contact unit 82a stands. In at least one contact expansion step 44a . 46a of the procedure 40a becomes the contact area 48a . 50a of the membrane element 22a about an electrostatic force 52a . 54a at least essentially completely on a contact element 56a . 58a the heat conduction unit 20a fixed. Preferably the contact expansion step 44a . 46a by extending the source move step 116a or the descent step 114a around a retention time 132a after first contacting the membrane element 22a with the outlet contact unit 82a or the inlet contact unit 88a realized. Preferably in at least one heating step 122a during the sink contact phase 118a the membrane element 22a , in particular the electrocalorically active material of the membrane element 22a , heated. Preferably in the heating step 122a an electrical voltage between the thermoelectrode 24a and the inlet electrode 108a and / or the outlet electrode 106a built up. Preferably, in a heat release step 124a during the sink contact phase 118a Heat from the membrane element 22a given off to the heat sink. Preferably in at least one cooling step 126a during the source contact phase 120a the membrane element 22a , in particular the electrocalorically active material of the membrane element 22a , cooled. Preferably in the cooling step 126a an electrical voltage between the thermoelectrode 24a and the inlet electrode 108a and / or the outlet electrode 106a reduced. Preferably in a heat absorption step 128a during the source contact phase 120a from the membrane element 22a Heat absorbed from the heat source.

Preferably in an adjustment step 131 of the procedure 40a an electrocaloric cycle of the membrane element 22a and an oscillation cycle of the membrane element 22a temporally offset from one another by a direction of a heat flow between the outlet duct 18a and the inlet duct 16a adapt. The method preferably comprises 40a at least one cooling mode 129a , In particular falls in the cooling mode 129a the inlet movement step 112a with the source move step 116a together. In particular, the inlet duct functions 16a as a heat source. In particular falls in the cooling mode 129a the exhaust movement step 110a with the lowering step 114a together. In particular acts in the cooling mode 129a the outlet duct 18a as a heat sink. The method preferably comprises 40a at least one heating mode 130a , In particular falls in the heating mode 130a of the Inlet moving step 112a with the lowering step 114a together. In particular acts in the heating mode 130a the inlet duct 16a as a heat sink. In particular falls in the heating mode 130a the exhaust movement step 110a with the source move step 116a together. In particular acts in the heating mode 130a the outlet duct 18a as a heat source. The procedure 40a includes at least one thermal insulation mode 60a , where a vibration 27a of the membrane element 22a is blocked.

5 shows a time course of the vibration 27a , In particular, the vibration 27a from the electrostatic force 52a . 54a caused between the moving electrode 26a and the docking electrode 102 the outlet contact unit 82a and / or between the further movement electrode 100a and the docking electrode 104a the inlet contact unit 88a due to the voltage applied. A minimum and a maximum are preferably those between the membrane element 22a and the heat sink acting electrostatic force 54a against a minimum and a maximum of between the membrane element 22a and the heat source acting electrostatic force 52a staggered in time, in particular by half the cycle duration. There is preferably a maximum and a minimum of the electric field strength 42a between the thermoelectrode 24a and the outlet electrode 106a and / or the inlet electrode 108a , especially around the lead time 132a , against the minimum and the maximum of the electrostatic force 52a . 54a postponed. In particular, the retention time 132a shorter than half the cycle time.

In the 6 to 12 four further exemplary embodiments of the invention are shown. The following descriptions and the drawings are essentially limited to the differences between the exemplary embodiments, with respect to components with the same designation, in particular with respect to components with the same reference numerals, in principle also to the drawings and / or the description of the other exemplary embodiments, in particular the 1 to 5 can be referred. To differentiate the exemplary embodiments, the letter a is the reference number of the exemplary embodiment in FIGS 1 to 5 readjusted. In the embodiments of the 6 to 12 is the letter a through the letters b . b ' . c or c ' replaced.

6 shows a fluid exchange device 12b , The fluid exchange device 12b has a heat transfer device 10b on. The heat transfer device 10b for the fluid exchange device 12b is for tempering one through the fluid exchange device 12b flowing fluid 14b intended. The heat transfer device 10b comprises at least one inlet channel 16b , The inlet duct 16b is to guide the fluid 14b intended. The heat transfer device 10b comprises at least one outlet channel 18b , The outlet duct 18b is to return the fluid 14b intended. The heat transfer device 10b includes at least one between the inlet duct 16b and the outlet duct 18b arranged heat conduction unit 20b , The heat conduction unit 20b is for an exchange of heat between the inlet duct 16b and the outlet duct 18b intended. The heat transfer device 10b comprises at least one vibratable membrane element. The membrane element is inside the heat conduction unit 20b arranged. The membrane element is a heat conduction depending on the vibration position between the membrane element and the inlet channel 16b and / or the outlet duct 18b intended. The guide and the return are preferably within the heat exchanger device 10b Arranged parallel to each other, in particular to implement the countercurrent principle.

7 shows a cross section AA the heat transfer device 10b for the fluid exchange device 12b , The heat transfer device preferably has 10b a layered construction from a plurality of outlet channels 18b . 32b . 34b and a plurality of inlet channels 16b . 36b . 38b on. Preferably, the outlet channel 18b , the inlet duct 16b and / or the at least one further fluid channel, in particular the further outlet channel 32b . 34b and / or the further inlet duct 36b . 38b , arranged in spatially at least substantially parallel planes. Inputs and outputs of two adjacent fluid channels are preferably arranged according to a countercurrent principle. Preferably, the outlet channel 18b and the at least one further outlet channel 32b . 34b Fluidically arranged in parallel to each other. In particular, form the outlet channel 18b and the at least one further outlet channel 32b . 34b a branching outlet duct system, in particular with a common inlet opening and a common outlet opening. Preferably applies to the inlet duct 16b and the at least one further inlet channel 36b . 38b an arrangement similar to that for the exhaust duct 18b and the at least one further outlet channel 32b . 34b ,

8th shows a cross section AA an alternative heat transfer device 10b ' for the fluid exchange device 12b , The alternative heat transfer device 10b ' differs from the heat exchanger device 10b only through the interconnection of the fluid channels with each other and basically refers to the fluid exchange device 12b , To differentiate it Reference number of the alternative heat transfer device 10b ' an apostrophe appended. Preferably, the outlet channel 18b ' and the at least one further outlet channel 32b ' . 34b ' fluidly arranged in series with each other. In particular, form the outlet channel 18b ' and the at least one further outlet channel 32b ' . 34b ' a cascading exhaust duct system. Preferably, the inlet duct 16b ' and the at least one further inlet duct 36b ' . 38b ' fluidly arranged in series with each other. In particular, form the inlet duct 16b ' and the at least one further inlet duct 36b ' . 38b ' a cascading inlet duct system.

With regard to further features and / or functions of the fluid exchange device 12b , and the heat transfer device 10b and the heat transfer device 10b ' may in particular refer to the description of the 1 to 5 to get expelled. In particular, the heat transfer device 10b and the alternative heat transfer device 10b ' to carry out the procedure 40a suitable.

9 shows a fluid exchange device 12c , The fluid exchange device 12c is designed as a heat pump. The fluid exchange device 12c comprises at least one heat transfer device 10c , The heat transfer device 10c for the fluid exchange device 12c is for tempering one through the fluid exchange device 12c flowing fluid 14c intended. In particular, the fluid 14c as process water or as a heat carrier for heating a room 15c educated. The heat transfer device 10c comprises at least one inlet duct 16c , The inlet duct 16c is to guide the fluid 14c intended. The heat transfer device 10c comprises at least one outlet channel 18c , The outlet duct 18c is to guide another fluid 134c intended. The fluid exchange device preferably comprises 12c at least one external fluid channel 66c , in particular to an inlet of the further fluid 134c , in particular air, into the fluid exchange device 12c from an external fluid reservoir, especially the atmosphere. The external fluid channel preferably opens 66c into the exhaust duct 18c , The fluid exchange device preferably comprises 12a at least one drain channel 74c , especially for repatriating yourself in the room 15c located fluid 14c into the fluid exchange device 12c , The drain channel preferably opens 74c into the inlet duct 16c , The fluid exchange device preferably comprises 12c at least one fluid channel 76c , in particular for feeding the through the external fluid channel 66c inflowing further fluids 134c into the external fluid reservoir and / or a further external fluid reservoir which is separate from the fluid reservoir. The outlet channel preferably opens 18a in the Fortfluidkanal 76a , The fluid exchange device preferably comprises 12c an inlet channel 68c , in particular for feeding the via the drain channel 74c inflowing fluid 14c in the room 15c , The inlet duct preferably opens 16c in the inlet channel 68c ,

10 shows the heat transfer device 10c , The heat transfer device 10c includes at least one between the inlet duct 16c and the outlet duct 18c arranged heat conduction unit 20c to exchange heat between the inlet duct 16c and the outlet duct 18c , The heat transfer device 10c comprises at least one vibratable membrane element 22c , The membrane element 22c is inside the heat conduction unit 20c angeordnetet. The membrane element 22c is to a vibration position-dependent heat conduction between the membrane element 22c and the inlet duct 16c and / or the outlet duct 18c intended. The heat transfer device 10c comprises at least one further membrane element 28c-31c , Preferably, the heat transfer device comprises 10c several, in particular more than three, preferably more than seven, particularly preferably more than fifteen further membrane elements 28c-31c , here only four further membrane elements for the sake of clarity 28c-31c are shown. The further membrane element is preferably 28c-31c in another heat conduction unit 138c-141c arranged. Preferably, the heat transfer device comprises 10c at least one between the membrane element 22c and the further membrane element 28c-31c arranged fluid heat-conducting element 136c , Preferably, the heat transfer device comprises 10c at least one heat transfer duct 137c , in particular for guiding the fluid heat-conducting element 136c , The heat transfer duct preferably forms 137c a closed circuit for the fluid heat-conducting element 136c , Preferably, the heat transfer device comprises 10c at least one heat exchanger element 142c for an exchange of outside heat 146c between the outlet duct 18c and the fluid heat-conducting element 136c , Preferably, the heat transfer device comprises 10c at least one further heat exchanger element 144c for an exchange of internal heat 148c between the inlet duct 16c and the fluid heat-conducting element 136c , The heat transfer element preferably comprises 142c and / or the further heat exchanger element 144c a structured partial area, in particular for increasing the surface of the heat exchanger element 142c and / or the further heat exchanger element 144c , For example, the heat transfer element is / is 142c and / or the further heat exchanger element 144c designed as a corrugated metal plate. Alternatively or additionally, the heat transfer element has / has 142c and / or that further heat exchanger element 144c a porous, finned, nubbed or the like section. It is also conceivable that the heat exchanger element 142c and / or the further heat exchanger element 144c consist of a, in particular heat-conducting, ceramic and / or a, in particular heat-conducting, plastic. An outlet contact unit is preferred 82c the heat conduction unit 20c the outlet duct 18c facing. An outlet contact unit is preferred 152c the further heat conduction unit 138c - 141c the outlet duct 18c facing. An inlet contact unit is preferred 88c the heat conduction unit 20c the inlet duct 16c facing. An inlet contact unit is preferred 154c the further heat conduction unit 138c - 141c the inlet duct 16c facing. An electrocaloric cycle and / or an oscillation cycle of the membrane element is preferred 22a and the adjacent further membrane element 28c temporally shifted against each other. An inlet contact unit, for example the inlet contact unit, preferably functions 88c the heat conduction unit 20c , and an adjacent outlet contact unit, for example the outlet contact unit 152c the adjacent further heat conduction unit 138c , both as a heat source or both as a heat sink. The heat transfer device preferably has 10c a heat transfer unit 156c to a circulation of the fluid heat-conducting element 136c on. It is also conceivable that circulation of the fluid heat-conducting element 136c relies on convection.

11 shows an alternative heat transfer device 10c ' for the fluid exchange device 12c , The alternative heat transfer device 10c ' differs from the heat exchanger device 10c only by the design of the heat-conducting element between the membrane elements and basically refers to the fluid exchange device 12c , To distinguish them is the reference number of the alternative heat transfer device 10c ' an apostrophe appended.

The heat transfer device 10c ' comprises at least one further membrane element 28c ' and at least one between the membrane element 22c ' and the further membrane element 28c ' arranged solid heat-conducting element 158c ' , The heat transfer device 10c ' comprises at least one additional membrane element 160c ' , The heat transfer device 10c ' includes one on the additional membrane element 160c ' arranged additional solid heat-conducting element 162c ' , The heat transfer device 10c ' includes a solid heat-conducting element 158c ' and the other solid heat-conducting element 162c ' connecting bridge element 164c ' for heat exchange between the solid heat-conducting element 158c ' and the additional solid heat-conducting element 162c ' , Preferably, the heat transfer device comprises 10c ' another solid heat-conducting element 165c ' , The further solid heat-conducting element is preferably 165c ' between the solid heat-conducting element 158c ' and the additional heat-conducting element 162c ' arranged, in particular between the further membrane element 28c ' and the additional membrane element 160c ' , The bridge element preferably bridges 164c ' the further solid heat-conducting element 165c ' , in particular the further membrane element 28c ' and the additional membrane element 160c ' , In particular, the bridge element connects 164c ' the solid heat-conducting element 158c ' with the additional solid heat-conducting element 162c ' , in particular to realize a heat flow 166c ' between the solid heat-conducting element 158c ' and the additional solid heat-conducting element 162c ' , The heat transfer device preferably has 10c ' at least one other bridge element 168c ' . 170c ' . 172c ' on, in particular to connect the additional solid heat-conducting element 162c ' , the solid heat-conducting element 158c ' and / or the further solid heat-conducting element 165c ' with other heat-conducting elements 174c ' . 176c ' . 178c ' the heat transfer device 10c ' , The solid heat-conducting elements preferably form 158c ' . 162c ' . 165c ' . 174c ' . 176c ' . 178c ' and the bridge elements 164c ' . 168c ' . 170c ' . 172c ' at least two spaced apart thermal conductors, in particular for a, in particular indirect, thermal connection of the membrane elements 22c ' . 28c'-31c ' . 160c ' with the outlet duct 18c ' and / or the inlet duct 16c ' ,

12 shows the bridge element 164c ' , At least one bridge element 164c ' is designed to be movable, in particular to control heat exchange between the solid heat-conducting element 158c ' and the additional solid heat-conducting element 162c ' , Preferably, the heat transfer device comprises 10c ' at least one actuator and / or motor unit 180c ' , in particular to a movement of the bridge element 164c ' , The bridge element preferably has 164c ' at least one heat conduction position 182c ' to a thermal connection of the solid heat-conducting element 158c ' and the additional solid heat-conducting element 162c ' on. The bridge element preferably has 164c ' at least one separation position 184c ' for thermal insulation of the solid heat-conducting element 158c ' and the additional solid heat-conducting element 162c ' on. The heat transfer device preferably has 10c ' at least one on the bridge element 164c ' arranged insulation element 186c ' on. In particular, the insulation element 186c ' rigid with the bridge element 164c ' connected. In particular, the insulation element 186c ' in the separation position 184c ' on the solid heat-conducting element 158c ' and / or on the additional solid heat-conducting element 162c ' arranged.

12 also illustrates a process 40c ' , In at least one method step, a movement of the movably mounted bridge element 164c ' with at least one oscillation cycle of the membrane element 22c ' and / or an additional membrane element 160c ' synchronized. In particular, during the lowering step 114c ' for the membrane element 22c ' , and especially in a source move step 116c ' for the additional membrane element 29c ' , the bridge element 164c ' in the heat conducting position 182c ' emotional. In particular, during the lowering step 114c ' for the membrane element 22c ' , and especially in the source move step 116c ' for the additional membrane element 29c ' , the further bridge element 168c ' in a separation position 188c ' of the further bridge element 168c ' emotional. In particular, during the source move step 116c ' for the membrane element 22c ' , and in particular in a lowering step 114c ' for the additional membrane element 29c ' , the bridge element 164c ' in the heat conducting position 182c ' emotional. In particular, during the source move step 116c ' for the membrane element 22c ' , and especially in the lowering step 114c ' for the additional membrane element 29c ' , the further bridge element 168c ' in a heat conducting position 190c ' of the further bridge element 168c ' emotional.

With regard to further features and / or functions of the fluid exchange device 12c and the heat transfer device 10c and the alternative heat transfer device 10c ' may in particular refer to the description of the 1 to 8th to get expelled.

Claims (16)

Heat transfer device for a fluid exchange device, in particular for a ventilation system, for tempering a fluid (14a; 14b, 14b '; 14c, 14c') flowing through the fluid exchange device, with at least one inlet channel (16a; 16b, 16b '; 16c, 16c') for guiding the fluid (14a; 14b, 14b '; 14c, 14c'), with at least one outlet channel (18a; 18b, 18b '; 18c, 18c'), in particular for returning the fluid (14a; 14b, 14b ') ), and with at least one heat conducting unit (20a; 20b, 20b '; 20c, 20c') arranged between the inlet duct (16a; 16b, 16b '; 16c, 16c') and the outlet duct (18a; 18b, 18b ') Exchange of heat between the inlet duct (16a; 16b, 16b '; 16c, 16c') and the outlet duct (18a; 18b, 18b '; 18c, 18c'), characterized by at least one inside the heat conduction unit (20a; 20b, 20b '; 20c, 20c ') arranged vibratable membrane element (22a; 22c, 22c') for a vibration position dependent heat conduction between the Membrane element (22a; 22c, 22c ') and the inlet channel (16a; 16b, 16b'; 16c, 16c ') and / or the outlet channel (18a; 18b, 18b'; 18c, 18c '). Heat transfer device after Claim 1 , characterized in that the membrane element (22a; 22c, 22c ') has at least one thermally active material, in particular is formed entirely from it. Heat transfer device after Claim 1 or 2 , characterized by at least one thermoelectrode (24a) arranged on the membrane element (22a; 22c, 22c ') for controlling or regulating a temperature of the membrane element (22a; 22c, 22c'). Heat transfer device according to one of the preceding claims, characterized by at least one movement electrode (26a) arranged on the membrane element (22a; 22c, 22c ') for controlling or regulating an oscillation (27a) of the membrane element (22a; 22c, 22c'). Heat transfer device according to one of the preceding claims, characterized by at least one further membrane element (28a-31a) and at least one further fluid channel, in particular a further outlet channel (32a, 34a; 32b, 34b, 32b ', 34b') and / or a further inlet channel ( 36a, 38a; 36b, 38b 36b ', 38b'), the outlet channel (18a; 18b, 18b '), the membrane element (22a), the inlet channel (16a; 16b, 16b'), the further membrane element (28a-31a ) and the further fluid duct, in particular the further outlet duct (32a, 34a; 32b, 34b, 32b ', 34b') and / or the further inlet duct (36a, 38a; 36b, 38b, 36b ', 38b'), are arranged one on the other in layers are. Heat transfer device according to one of the preceding claims, characterized by at least one further membrane element (28c-31c) and at least one fluid heat-conducting element (136c) arranged between the membrane element (22c) and the further membrane element (28c-31c). Heat transfer device according to one of the preceding claims, characterized by at least one further membrane element (28c'-31c ') and at least one solid heat-conducting element (158c') arranged between the membrane element (22c ') and the further membrane element (28c'-31c'). Heat transfer device after Claim 7 , characterized by at least one additional membrane element (160c '), an additional solid heat-conducting element (162c') arranged on the additional membrane element (160c ') and a the solid Heat-conducting element (158c ') and bridge element (164c') connecting the additional solid heat-conducting element (162c ') for heat exchange between the solid heat-conducting element (158c') and the additional solid heat-conducting element (162c '). Heat transfer device after Claim 8 , characterized in that the at least one bridge element (164c ') is designed to be movable, in particular for controlling a heat exchange between the solid heat-conducting element (158c') and the additional solid heat-conducting element (162c '). Method for operating a heat transfer device, in particular a heat transfer device according to one of the Claims 1 to 9 , for a fluid exchange device, in particular for a ventilation system, for tempering a fluid flowing through the fluid exchange device (14a; 14b, 14b '; 14c, 14c'), characterized in that in at least one process step, heat conduction by means of an oscillation position within a heat conduction unit (20a; 20b, 20b '; 20c, 20c') of the heat transfer device arranged vibratable membrane element (22a; 22c, 22c ') of the heat transfer device is set. Procedure according to Claim 10 , characterized in that in at least one method step an electrocaloric cycle of the membrane element (22a; 22c, 22c ') and an oscillation cycle of the membrane element (22a; 22c, 22c') are shifted in time in relation to one another in order to determine a direction of a heat flow between the outlet channel (18a ; 18b, 18b '; 18c, 18c') and the inlet channel (16a; 16b, 16b '; 16c, 16c'). Procedure according to Claim 10 or 11 , characterized in that in at least one method step, a heat flow density between the inlet channel (16a; 16b, 16b '; 16c, 16c') and the outlet channel (18a; 18b, 18b '; 18c, 18c') by means of a on the membrane element (22a ; 22c, 22c ') applied electrical field strength (42a) and / or by means of an oscillation frequency of the membrane element (22a; 22c, 22c') is controlled or regulated. Procedure according to one of the Claims 10 to 12 , characterized by at least one contact expansion step (44a, 46a), in which a contact surface (48a, 50a) of the membrane element (22a; 22c, 22c ') is at least substantially completely on a contact element (56a, 54a) via an electrostatic force (52a, 54a) 58a) of the heat conduction unit (20a; 20b, 20b '; 22c, 22c') is fixed. Procedure according to one of the Claims 10 to 13 , characterized by a thermal insulation mode (60a), in which an oscillation (27a) of the membrane element (22a; 22c, 22c ') is blocked. Procedure according to one of the Claim 10 to 14 , characterized in that in at least one method step a movement of a movably mounted bridge element (164c ') is synchronized with at least one oscillation cycle of the membrane element (22c') and / or an additional membrane element (160c ') of the heat transfer device. Fluid exchange device, in particular ventilation system, with at least one heat transfer device according to one of the Claims 1 to 9 and / or with a control or regulating unit (62a; 62b; 62c) for carrying out a method according to one of the Claims 10 to 15 ,

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