EP4086524A1 - Hot drinking water generating unit for producing hot drinking water - Google Patents

Abstract

Above all, a domestic hot water production unit (1) for setting up/arranging in a building room and for producing domestic hot water with a domestic hot water storage tank for storing and dispensing domestic hot water, especially process water, to an outlet fitting such as a water tap and/or shower head, with at least one Drinking water heat exchanger device (11) is provided for heating the drinking water of the hot water tank (3), at least the hot water tank (3) and the drinking water heat exchanger device (4) being arranged inside a housing (2) and/or a casing (2), proposed, which at least partially improves the disadvantages of the prior art. According to the invention, this is achieved in that at least one building space heating surface (5) for heating/warming the building space is provided inside and/or on and/or in the housing (2) and/or the casing (2).

Description

The invention relates to a domestic hot water generating unit and a domestic hot water generating unit for setting up/arranging in a building space and for generating domestic hot water with a domestic hot water tank for storing and dispensing domestic hot water according to the preamble of claim 1.

State of the art

In times of climate change and the need to live and build energy efficiently, legislators are making increasing demands on energy consumption in the building sector. At the same time, very high temperatures are occurring more and more frequently in summer, i.e. an increase in so-called
"Hot days" above 35°C, which, among other things, leads to an increasing spread of air conditioning or cooling of living spaces.

In addition, the proportion of the urban population will continue to rise in the future. Therefore, more and more people will live in multi-storey residential buildings in the future.

In residential construction, especially in multi-storey low-energy residential construction, there are now and will be very high expenditures in the future due to work to prepare heating and air-conditioning systems. This includes the complex laying of pipe systems for air, heating and hot water. Mostly will heating and domestic hot water are prepared separately by a central heating system, in order to then be pumped separately to consumers. The costs for building technology such as sanitary installations and heat supply in new buildings amount to approx. 7.5% of the construction costs and in some cases up to 12.5% if controlled living space ventilation is used. The cost of upgrading buildings will continue to increase with the use of new, more environmentally friendly technologies, since the installation of pipework is resource-intensive.

In addition, renewed regulations for the prevention of legionella in domestic hot water make it necessary to set up domestic hot water circulation lines that are kept warm for central hot water preparation, which also increases costs.

In summary, it can be stated that the owner or constructor of a new building is obliged to purchase various services and products from different providers. This includes, for example, a heat generator, water heater, heat distribution system, e.g. radiator or underfloor heating, optional cooling, individual room control, water heater, heating circuit distributor, heat meter and the installation of these components. The procurement, coordination and installation of the different components together cause enormous effort and the above-mentioned costs.

For example, a so-called “TTA hot water heat pump” is already available from tecalor, which includes a hot water boiler or hot water storage tank whose drinking water can be heated using a small heat pump. For this purpose, ambient air is sucked in and its thermal energy is used by a heat exchanger to heat the stored drinking water or hot water used. This hot water generating device is usually located in the basement and often sucks in outside air or basement air, which is then used as a heat source or cooled down accordingly and released to the atmosphere via air ducts/ducts. The hot water generated here centrally or in the basement is then in turn routed via a house installation system to the individual floors or rooms and consumed at the individual water fittings of the existing washbasins, showers, bathtubs or kitchen taps.

Object and advantages of the invention

In contrast, the object of the invention is to propose a domestic hot water generation unit and a domestic hot water generation unit which at least partially improves the disadvantages of the prior art.

Starting from a domestic hot water generating unit and a domestic hot water generating unit of the type mentioned in the introduction, this object is achieved by the features of claims 1 and 10 . Advantageous embodiments and developments of the invention are possible as a result of the measures mentioned in the subclaims.

Accordingly, a domestic hot water generating unit according to the invention is characterized in that at least one building space heating surface for heating/warming the building space is provided at least inside and/or on and/or in the housing and/or the casing.

With the help of such building room heating surface of the domestic hot water production unit, which is within and / or on and / or in which The housing and/or the casing, ie which is present within or on/in the contour/casing/shell/housing or which includes the domestic hot water generation unit, can/will be used to heat the building space directly. This means that the building room, preferably a living space, in which the domestic hot water generating unit or a so-called "room unit" is set up or arranged, directly from the domestic hot water generating unit or without (long or complex) heating lines and/or can be heated without underfloor heating or underfloor heating loops or without radiators or the like. Accordingly, expensive radiators, underfloor heating in this room and possibly also in neighboring rooms of the apartment/residential unit can be omitted. This not only reduces the installation effort and the number of necessary heating components such as heating lines, thermostats and/or radiators/underfloor heating etc., but also the financial outlay and construction costs. The time required for installation, ie the construction time, can also be reduced in an advantageous manner by means of the invention.

Consequently, the domestic hot water generation unit according to the invention or a so-called "room device" is advantageously designed as a room heating element or as a radiator of the building room/living room. If necessary, there is a domestic hot water generating unit according to the invention in every building room that is to be heated or is required, eg in the living room and/or bathroom and/or kitchen and/or study or the like. It is preferred here to provide only a single domestic hot water generation unit per residential unit or apartment. This is inexpensive, saves space and is sufficient in terms of the necessary heating energy.

Preferably, at least one heating water heat exchanger unit comprises the heating surface of the building space, with the heating water heat exchanger unit being arranged within the housing and/or the casing. In this way, a heat exchange between the domestic hot water generation unit and the building/living space can be realized in an advantageous manner.

Advantageously, at least one heating unit is provided for heating the heating surface of the building space. For example, this is designed as a heat pump, especially a brine heat pump, an air heat pump, a condensing boiler, a district heating system, a gas burner or the like.

In a particular development of the invention, the heating unit is arranged/accommodated as a separate device or in a separate device housing. In this way, greater flexibility with regard to the heat/energy source can be achieved in an advantageous manner. For example, an air heat pump can be placed on the roof of a building or a brine heat pump with a geothermal heat exchanger can be installed in the basement or in the garden of the building. District heating or a heat source external to the building can also be used to generate energy. Accordingly, a particularly efficient power supply can be realized.

Advantageously, the heating unit is designed as an external energy source for generating thermal energy, so that at least the domestic hot water tank and the drinking water heat exchanger device can be heated with the thermal energy of the external energy source/heating unit. This is a dual use of the domestic hot water generation unit according to the invention is implemented in an advantageous manner, namely a single device or unit, the / for heating the drinking water or the drinking water storage tank and at the same time Heating of the building space or as apartment/building heating, whereby an external energy/heat source is used.

According to the invention, flexibility with regard to the energy/heating sources used or usable, such as district heating/network, wood or gas/oil heating or heat pump heating such as air-water and/or brine and/or geothermal heat pump heating etc., can be increased or improved to a particular extent. As a result, the domestic hot water generation unit according to the invention can be adapted to a wide variety of needs and/or framework conditions. This enables use in new buildings as well as in old buildings or renovations or retrofits.

In an advantageous variant of the invention, a heating fluid unit and/or at least two heating fluid lines is/are provided/arranged between the housing/casing and the heating unit and/or the separate device and/or the separate device housing. On the one hand, a central heating unit for several domestic hot water generation units and/or apartments/residential units can be provided in a building, which can be connected or attached to the aforementioned heating fluid unit and/or at least two heating fluid lines.

On the other hand, a separate/specific domestic hot water generating unit according to the invention can be used/provided for each apartment/residential unit. For this purpose, a building preferably has several residential units/apartments with at least one building room and/or living space, each of the several residential units/apartments having a domestic hot water generating unit and one each as the heating unit (19) and/or separate device and/or external energy source (19) trained residential heating unit and/or Has apartment heat pump unit and / or apartment cooling unit. This also improves the adaptability to a wide variety of conditions.

Advantageously, the housing and/or the casing comprises at least one air inflow opening for the inflow of room air of the building space and at least one air outflow opening for the outflow of room air into the building space. In this way, an advantageous (active or passive) air flow and/or convection flow can be generated through the domestic hot water generation unit or along/on the building space heating surface, as a result of which the building space can be heated.

Especially for an advantageous active air flow, the heating water heat exchanger unit has at least one blower and/or a fan for generating an air flow and/or for sucking in room air of the building space, especially through the air inflow opening, and/or for blowing room air into the building space, esp. Through the air outflow opening. This again advantageously improves the energy transfer between the domestic hot water generation unit and the building/living space.

In an advantageous variant of the invention, at least one (internal/integrated) additional heater is provided with an electric heating element for heating the drinking water of the domestic hot water storage tank, with the additional heater advantageously being at least inside and/or on and/or in the housing and/or the casing is arranged and/or wherein the electrical heating element can be switched on and/or off, in particular by means of an external electrical control signal, for example a photovoltaic system and/or an ammeter. This advantageous, optional This measure enables the drinking water/hot water in the storage tank to be heated separately and/or directly if required, eg with (so-called "excess") PV electricity, ie to increase advantageous PV electricity self-consumption. On the one hand, this improves the economy of the overall system and, on the other hand, the flexibility of hot water generation is additionally increased. In addition, this measure can also be used advantageously, for example to heat the heating fluid electrically if the usual heat source fails, by extracting the energy introduced by the electric heating element via the water-water heat exchanger integrated in the domestic hot water tank and using it for space heating. This is particularly advantageous as an emergency operation if the conventional energy source fails, for example if the district heating or heat pump fails.

In a particular development of the invention, at least one cooling unit is provided for cooling a cooling surface. Cooling or air conditioning of the building space/living space can also be realized in an advantageous manner. For example, a heat pump, in particular a brine heat pump or preferably an air heat pump, is provided, which can be designed/used either as a heating unit on the one hand and as a cooling unit on the other hand.

According to a preferred embodiment of the invention, the heating water heat exchanger unit is/are designed as a cooling unit and/or the heating surface of the building space as a cooling surface. Accordingly, on the one hand thermal energy can be supplied to the building space via the heating water heat exchanger unit or the building space heating surface, ie for heating/heating the building space, and on the other hand thermal energy can be supplied to the building space via the heating water heat exchanger unit/cooling unit or the building space heating surface/cooling surface.

These previously listed variants of the invention not only reduce the constructive effort, but also the economic/financial effort, especially through dual use of the heat pump for two functionalities of the domestic hot water generating unit according to the invention.

For this purpose, or also fundamentally or generally, control elements such as valves or the like and/or advantageous sensors, in particular temperature, pressure/flow/quantity sensors, etc. can be provided in an advantageous manner. This enables, among other things, an advantageous monitoring or control/regulation of the system or system unit according to the invention, in particular an electrical and/or electronic and/or semi-/automated mode of operation. This allows an optimized, energy-saving and climate-friendly use of energy to be implemented.

Advantageously, the blower and/or the fan and/or the electrical heating element and/or the heating unit and/or the cooling unit and/or the cooling surface is/are arranged within the housing and/or the casing. A particularly compact/space-saving room unit or a domestic hot water generation unit can be implemented in which all the essential components for heating/cooling are integrated.

Preferably, according to the invention, a domestic hot water generation system or a building heating / cooling system with at least one building room, with at least one outlet fitting such as a faucet and / or shower head, and with a domestic hot water generation unit of the aforementioned type can be realized.

Advantageously, the building space is designed as a living space, so that the domestic hot water generating unit is set up/arranged in the living space, and the outlet fitting is arranged in a kitchen room and/or bathroom/washroom and/or toilet room.

In a particular development of the invention, the heat pump unit has a heat pump housing, with fluid lines, in particular water lines, of a heating and/or cooling circuit being provided between the heat pump unit and the domestic hot water production unit and/or the housing, with the heat pump unit in particular having at least partially arranged on an outer shell such as an outer wall and/or a building roof of the building and/or located in the building, e.g. in the boiler room and/or basement or the like. The latter is of particular advantage, e.

For example, a building has a plurality of residential units/apartments with at least one building room and/or living space, each of the plurality of residential units/apartments advantageously having a domestic hot water generation unit. Advantageously, a separate or specific heating unit/energy source can be assigned/provided for in each residential unit/apartment. As an alternative to this, a single/common heating unit/energy source and/or heat pump unit and/or cooling unit and/or electrical or electronic control unit for the domestic hot water generation units which is planned for several residential units/apartments.

example

An embodiment of the invention is shown in the drawing and is explained in more detail below with reference to the figures.

Figur 1

einen ersten, schematischen Hydraulikplan eines ersten Raumgerätes gemäß der Erfindung,

Figur 2

einen zweiten, schematischen Hydraulikplan eines zweiten Raumgerätes gemäß der Erfindung,

Figur 3

schematische Seitenansichten eines dritten Raumgerätes gemäß der Erfindung,

Figur 4

einen schematischen, ersten Grundriss einer ersten Wohneinheit mit einem vierten Raumgerät gemäß der Erfindung,

Figur 5

einen schematischen Gebäudeplans mit mehreren Wohneinheiten und mit je einem Raumgerät gemäß der Erfindung,

Figur 6

einen schematischen, zweiten Grundriss einer zweiten Wohneinheit mit einem fünften Raumgerät gemäß der Erfindung sowie mit einer zugeordneten Wohnungsenergiequelle und

Figur 7

einen dritten, schematischen Hydraulikplan eines sechsten Raumgerätes gemäß der Erfindung.

In detail shows:

figure 1

a first schematic hydraulic plan of a first space unit according to the invention,

figure 2

a second, schematic hydraulic diagram of a second space device according to the invention,

figure 3

schematic side views of a third room unit according to the invention,

figure 4

a schematic, first floor plan of a first residential unit with a fourth room device according to the invention,

figure 5

a schematic building plan with several residential units and each with a room device according to the invention,

figure 6

a schematic, second floor plan of a second residential unit with a fifth room device according to the invention and with an associated residential energy source and

figure 7

a third hydraulic schematic diagram of a sixth space unit according to the invention.

In the Figures 1, 2 and 3 a hydraulic diagram of a room unit 1 with housing 2 is shown schematically in each case. Inside the housing 2 there is a hot water tank 3 and a heat exchanger 4 with a (ribbed) heat exchanger surface 5 , the heat exchanger 4 advantageously comprising a fan converter 6 . With the fan converter 6 , room air is sucked in through a lower inlet opening 7 of the housing 2 and guided to an upper outlet opening 8 and discharged from the housing 2 .

Drinking water and thermal energy as well as waste water is supplied to and removed from the room unit 1 via connections 9 . Various valves 10, some of which can be controlled electrically/motorically, are provided for advantageous hydraulic guidance or management.

Furthermore, a heat exchanger 11 is provided for heating the drinking water of the memory 3, for example as a coiled-tube heat exchanger 11 according to FIG figure 1 or as a plate heat exchanger 11 according to figure 2 educated. In addition, an electric heating element 12 for heating the drinking water in the storage tank 3 can optionally be provided.

In the advantageous, alternative variant according to figure 7 one of the heat exchangers 4 is designed as an optionally installable housing wall heater 40, which heats the (metallic) wall of the housing 2 and thus the room air.

In addition, according to the variant figure 7 temperature sensor 30, 31 is also shown schematically, with which the temperature of the drinking water reservoir 3 and the room air or the interior (through which room air can flow) of the housing 2 or the unit 1 can be determined and advantageously used for monitoring, controlling or regulating the heating system .

According to the hydraulic scheme shown schematically, the room unit 1 can advantageously be switched between hot water operation and heating operation both by surface heating 40 and by two air-water heat exchangers 4 equipped with a compact fan 6 and connected hydraulically in parallel, which can be implemented, for example, in the form of finned tube heat exchangers 4.

A display 13 can be provided for control or monitoring and information, with which, for example, the room unit 1 can be configured or parameterized (cf. figure 3 ).

In figure 4 an exemplary installation or use of the room unit 1 is illustrated in a two-room apartment, which is used both for cooling and for heating the living room 14 and possibly indirectly from neighboring rooms 15, for example by means of a ventilation fan 23, 24 or the like. A corridor/corridor 16 may not be heatable. On the other hand, one of the adjacent rooms 15 can be a bathroom/toilet and have a shower 17, among other things. The shower 17 draws its hot water from the room unit 1 of the living room 14 by means of corresponding water pipes, with optionally additionally and optionally underfloor heating 18 or heating loops in the floor of the bathroom 15 also receiving thermal energy from the room unit 1 and for this purpose advantageously via heating pipes/lines connected to room unit 1.

In addition, in figure 4 Optionally installable and / or combinable (active, electric) fans 23, 24 or so-called so that to improve the heat supply of the rooms 14, 15, 16 can be provided. These can optionally be built into a wall of the room 14, 15, 16 and/or a door of a room 14, 15, 16. Alternatively, the fans 23, 24 can also be designed as passive or pressure-guided fan valves, through openings or the like.

The REKS system with selective heat input into the living unit through the room unit in the REKS and heat distribution via so-called active overflow devices or fans 23, 24, as mentioned above, advantageously allow air to be exchanged with another room and thus, for example, keep a living unit at the same temperature level. Such active "transfer vents" 23, 24 or zone fans are already products available on the market, but are currently mostly only used to improve the room air quality by controlling the CO2 content and the relative humidity, e.g. in rooms without windows or bathrooms. According to the invention, these or fans 23, 24 in general are advantageously used for heat distribution when heat is introduced at specific points, without using a water-conducted or air-conducted piping system. The heat is distributed by the fans or fans 23, 24 built into the doors/walls, which distribute or exchange the warm air and thus mean that only one heating output per residential unit is necessary.

• Alternative zu wassergeführter Wärmeverteilung z.B. Fußbodenheizung 18 oder Heizkörper 32,
• geringere bauliche Installationen notwendig gegenüber Installation eines wassergeführten Wärmeverteilsystem,
• z.B. in der Sanierung von Gebäuden 22 ohne wassergeführte Wärmeverteilung.

Pressure equalization to the peripheral space preferably takes place via a fan 23, 24 in an active and/or passive manner or Active overflow components 23, 24 used over the door or in the wall without a permanently installed pipe system. Particular advantages are, for example:

• Alternative to water-based heat distribution, e.g. underfloor heating 18 or radiators 32,
• fewer structural installations required compared to the installation of a water-based heat distribution system,
• eg in the renovation of buildings 22 without water-based heat distribution.

In figure 5 a building 22 is shown schematically in a sectional side view, which has, for example, four floors or residential units/apartments, each with a separate/own room unit 1 .

As a heat source 19 is in accordance with the embodiment figure 5 an air heat pump 19 (LWP) is used, which extracts heat energy from atmospheric air and feeds it to a (closed) heating circuit 20 . The heating circuit 20 essentially comprises a heating flow line and a heating return line (two-pipe system), which supplies thermal energy to each room unit 1 of each residential unit. In this case, a control unit 21 or a control device 21 is advantageously present, which includes, among other things, the electronic/electrical monitoring/control of the system.

In figure 6 will be similar or alternative to the variant according to figure 4 a second, exemplary installation or use of the room unit 1 in a two-room apartment illustrates that both for cooling and for heating the living room 14 and here also directly from adjacent rooms 15, for example by means of heating lines 26, ie heating flow and heating return.

A corridor/corridor 16, in turn, may not be heatable. On the other hand, one of the adjacent rooms 15 can be a bathroom/toilet and have a shower 17, among other things. The shower 17 gets its hot water from the room unit 1 of the living room 14 by means of a corresponding

Water pipe 25, whereas a sink 29 of the room 14 or the living room/kitchen 14 receives hot drinking water via a hot water pipe 25 .

According to figure 6 In addition, underfloor heating 18 or heating loops is provided in the floor of the bathroom 15, whereby this also receives thermal energy from the room unit 1 and is advantageously connected to the room unit 1 via heating pipes/lines 26 for this purpose. Additionally or optionally, the room 15 or a bedroom 15 has a so-called radiator 32 or heating element 32 , which in turn receives heating energy from the room unit 1 by means of lines 26 .

At the in figure 6 The variant shown schematically comprises each residential unit/apartment, ie the apartment shown, a separate or separate energy source 27 or a separate or separate heat pump 27 which is arranged/fixed/suspended outside on the outer wall of the apartment or building. This increases flexibility and/or improves the options for retrofitting or heating renovation without great effort.

In principle, instead of a central heat source 19 (cf. figure 5 ) a completely decentralized solution can be implemented, like this in figure 6 is indicated schematically.

A corresponding hydraulic circuit can have a room unit 1 with a decentralized air-water heat pump 27 (cf. figure 6 ), such as those used for refurbishment or in New construction can be used. The room unit 1 serves as an indoor unit for the HP 27 and advantageously takes over the control of the heat pump 27 via a bus system in addition to the room heating and cooling, hot water preparation and heating circuit distribution. Device 1 is a so-called "all-in-one solution" for cost-effective renovation. The UWP, membrane expansion vessel and safety valve etc. required for the heating can also be integrated.

Particular advantages here include: no noise from HP on the facade, minimal piping and installation effort, easy replacement, all components that are otherwise installed in flush-mounted or additional devices can be integrated or avoided.

A control device 21 or the control unit 21 (cf. figure 5 ) in the room unit 1 or on the separate or separate energy source 27 or heat pump 27, for example, arranged/fixed/hung outside on the outer wall of the apartment or building.

A room unit 1 according to the invention is a complete solution for water heating, heating and cooling. The room unit 1 is advantageously designed as a heating and cooling center 1 in a living unit, is placed directly in the living room 14 and gives off heat there or extracts heat from the room, namely via an integrated heat exchanger 4, e.g. in the form of a fan convector 6 with a heat exchanger surface 5 or the like.

A so-called integrated register boiler 3 or alternatively a plate heat exchanger 11 with a hot water tank 3 generates and stores domestic hot water at certain times. Additional rooms 15 can be heated with heating water via the connection 9 of a heating circuit distributor or additional heat distributor or be cooled. An air-water heat pump 19, brine-water heat pump, gas heater or district heating transfer station can be used as the energy source 19 for operation.

The room unit 1 advantageously also offers the possibility, for example, of an integrated heat meter for automatic heat billing within a residential building.

An additional electric heating rod 12 integrated in the water heater 3 as additional heating or the like, which can be optionally provided, can also be used to prepare domestic hot water electrically, e.g. with a photovoltaic system to use your own solar power or to increase the self-consumption of a PV system.

The room unit 1 can be set up against a wall with the appropriate connecting cables or in the corner of a room. Air is preferably drawn in in the lower area/section of the room unit or at floor level (opening 7) and heated/cooled in the upper or, if applicable, middle area/section of the unit frontally or on the top or the upper front side of the unit, i.e. the Top view surface blown into space (orifice 8).

For example, via a user interface 13 integrated in the device 1, eg touch screen and/or manual switch, the target room temperature and/or time programs etc. can advantageously be set and, if necessary, the energy consumption or other/additional data/information can be read. Additional room thermostats etc. can be connected to an advantageous control or monitoring unit, ie so-called "electronics" of the room unit 1 . These "electronics" of the room unit 1 distributes/controls, for example, the heating water accordingly in additional, optional heat distributors 18 in other rooms 15.

The room units 1 can be operated with different heat/cold generators 19 . Brine-to-water heat pumps, air-to-water heat pumps 19 or other heat pumps are ideal for supplying heating and cooling water. District heating with a transfer station or a condensing boiler of any kind can be used for heating only.

A two-pipe system 20 is advantageously sufficient for all operating states, e.g. consisting of 1x heating flow, 1x heating return. In this case, the heating/cooling and hot water operation is advantageously implemented at separate times, e.g. several hours of hot water preparation twice a day, with heating/cooling operation in between. Should the hot water not be sufficient in between, the storage tank 3 or register boiler 3 can advantageously be reheated electrically (heating element 12). Due to the decentralized hot water preparation in the residential unit, it is not necessary to set up a circulation line, which saves both constructive and financial effort.

An advantageous control unit 21 is, for example, an electronic unit 21 in the part of the hydraulic system of the heat generator located in the house, which controls the heat generator and the room devices 1 in each residential unit. The control unit 21 preferably communicates with the individual devices/components 1 via a bus system. In addition, an existing home automation system can also be integrated via a bus system. The control unit 21 coordinates, among other things, the time-separated from the heating / cooling operation water heating with the individual Room units 1, e.g. twice a day hot water preparation, in between heating or cooling operation.

The connection 9 of the device 1 is preferably made on a rear side of the housing 2, for example via eight connections described in the hydraulic diagram (cf. Figures 1-3 ). In addition, a connection is established with the bus system to the control unit 21 and an electrical power supply. The device 1 is then ready for operation.

According to the invention, the advantageous home stations/room devices 1 for hot water preparation and heating/cooling have the function of dissipating heat and cold into the room 14 in which they are installed. The installation takes place as directly as possible in the building room 14 or living space 14 to be heated for optimal heat distribution.

According to the invention, it is possible to implement a complete "plug&play" solution for e.g.

• □ vereint Heizen, Kühlen, Warmwasserbereitung und
• □ keine Wärmeverteilung im Wohnraum notwendig,
• □ funktioniert mit vielen Heizwärmequellen,
• □ keine Hygieneprobleme und Warmwasserzirkulationsleitungen durch dezentrale Warmwasserbereitung,
• □ spart erheblich Installationskosten durch Nutzung eines Zweileitersystems und Integration aller notwendigen Komponenten in ein Gerät 1, d.h. innerhalb eines Gerätegehäuses 2,
• □ für Neubau und Sanierung im mehrgeschossigen Wohnbau geeignet,
• □ kann in der Endphase des Bauvorhabens eingebaut werden,
• □ kann weitere Heizwärmeverteiler versorgen, abrechnen und steuern.

Some significant advantages of the invention are, for example:

• □ combines heating, cooling, water heating and
• □ no need for heat distribution in the living room,
• □ works with many heat sources,
• □ no hygiene problems and hot water circulation lines due to decentralized hot water preparation,
• □ saves considerable installation costs by using a two-wire system and integrating all necessary components in one device 1, ie within one device housing 2,
• □ suitable for new construction and renovation in multi-storey residential buildings,
• □ can be installed in the final phase of the construction project,
• □ can supply, bill and control other heat distributors.

A system can thus be implemented according to the invention, the system advantageously consisting of a control unit 21 and a plurality of room devices 1 . The control unit 21 is preferably an electronic control unit 21 and advantageously tells the individual room devices 1 via a bus system (not shown) whether they should hydraulically switch to the water heating mode or whether they can/should heat or cool depending on the room temperature.

The control unit 21 or the control system also consists of a specially developed hydraulic circuit with several switching valves which, in combination with a heat pump, allow the following operating modes, for example: The hydraulic circuit ensures that the storage tank 3 or buffer storage tank 3 is heated to different levels with heating water at different temperatures can be loaded. For the cooling mode, buffer tank 3 is short-circuited or cold water is loaded into a separate cooling buffer tank.

1. 1. Heizbetrieb, z.B. Vorlauftemperatur zwischen 30°C und 60°C,
2. 2. Warmwasserbereitungsbetrieb, z.B. >55°C,
3. 3. Kühlbetrieb, wobei der Pufferspeicher 3 im Bypassmodus ist, z.B. 10-18°C.

The control unit 21 specifies the desired flow temperature via a bus system of the heat pump, which means that different temperature levels can be varied between heating operation, hot water operation and cooling operation. This can be implemented, for example, as follows:

1. 1. Heating mode, e.g. flow temperature between 30°C and 60°C,
2. 2. Hot water preparation operation, e.g. >55°C,
3. 3. Cooling mode with buffer tank 3 in bypass mode, eg 10-18°C.

• Heizen, Kühlen und Warmwasserbereitung in einem ZweiLeitersystem (1x Heizwasservorlauf und 1x Heizwasserrücklauf) möglich (normalerweise 4-Leitersystem: 2x für Heizungsvorlauf und Rücklauf und 2x für Trinkwarmwasserzirkulation zu den Zapfstellen),
• Heizen, Warmwasser und Kühlen nur in Kombination mit einer Wärmepumpe möglich,
• Heizen, Warmwasser auch mit z.B. Fernwärmeübergabestation oder Brennwertkessel etc. möglich.

General advantages of the system according to the invention:

• Heating, cooling and hot water preparation possible in a two-pipe system (1x heating water flow and 1x heating water return) (normally 4-pipe system: 2x for heating flow and return and 2x for domestic hot water circulation to the taps),
• Heating, hot water and cooling only possible in combination with a heat pump,
• Heating, hot water also with eg district heating transfer station or condensing boiler etc. possible.

Advantageously, according to the invention, the room unit 1 is usually designed in such a way that it does not generate heat, it does not contain a chiller, it does not use waste heat to generate heat, but uses the thermal energy in the heating water for hot water preparation and space heating. The hot water is (always) kept at >50°C, otherwise the hygiene standards are not observed.

The integrated room heater in room unit 1 is supplied with heating water and not with refrigerant in order to heat room 14, 15, 16. The room unit 1 generates hot water through hydraulic interconnection between the heat exchanger for space heating and the heat exchanger in the hot water tank and not through the waste heat of a refrigeration cycle.

• Bewusst kein Kältekreis mit Kompressor integriert, daher auch kein tiefen Geräusche die sonst wie beim Stand der Technik durch einen Kompressor erzeugt werden,
• es können verschiedene Leistungen durch eine Variation der Wassertemperatur erzielt werden,
• durch Zuführung von kaltem Heizungswasser kann auch eine Raumkühlung erfolgen,
• Es ist kein Lüftungssystem mit Verbindung bzw. Verrohrung zum Außenbereich im Raumgerät 1 vorhanden,
• schnelle Installation durch keine zusätzlichen Wärmetauscher im Aufstellungsraum des Raumgeräts 1 bzw. in der gesamten Wohneinheit beim Einsatz aktiver Überströmer 23, 24. Vorteilhafte Voraussetzung dafür ist möglichst ein entsprechend geringer Heizwärmebedarf, wie es z.B. beim Bau nach Passivhausstandard vorhanden ist,
• durch die dezentrale Warmwasserbereitung kann in vielen Fällen auf eine Zirkulation verzichtet werden,
• gemäß der Erfindung ist z.B. eine Trinkwarmwassererzeugungseinheit vorgesehen, die eine Gebäuderaumheizung beinhaltet, die die Wärmeenergie aus dem Heizwasser über einen Wasser-Luft-Wärmetauscher direkt in den zu beheizenden Raum 14, 15, 16 abgibt,
• das Raumgerät 1 verwendet in einer vorteilhaften Variante sowohl einen Rippenrohrwärmetauscher 4 mit aufgesetztem Gebläse 6 als auch zumindest ein hydraulisch parallel geschaltetes Wandheizungspaneel, das/die z.B. in das Gehäuse 2 eingelassen sind, beispielsweise als wassergeführte Heizschlangen in ein Wärmeleitbleich eingelassen. Dies führt zu einem erhöhten Anteil an Strahlungswärme und soll dazu beitragen ein vorteilhaft angenehmes "Raumgefühl" zu realisieren,
• beim Raumgerät 1 werden Wärmetauscher für die Raumheizung hydraulisch zugeschalten. Dies erfolgt in vorteilhafter Weise abhängig von der Vorlauftemperatur und der Raumtemperatur, z.B. in einem Thermostatbetrieb.

The room unit 1 can not only heat the room 14, 15, 16, but also cool it. Thanks to the advantageous hydraulic circuit, it is possible to switch between hot water preparation and heating/cooling operation. Such are the special advantages and/or features of the room unit 1 according to the invention can be implemented individually or in combination with one another:

• Deliberately no refrigeration circuit with compressor integrated, therefore no deep noises that are otherwise generated by a compressor as in the state of the art,
• different performances can be achieved by varying the water temperature,
• the supply of cold heating water can also be used to cool the room,
• There is no ventilation system with connection or piping to the outside area in room unit 1,
• Quick installation due to no additional heat exchanger in the installation room of the room unit 1 or in the entire residential unit when using active overflow devices 23, 24. An advantageous prerequisite for this is a correspondingly low heating requirement as possible, as is the case, for example, with construction according to the passive house standard,
• Due to the decentralized hot water preparation, circulation can be dispensed with in many cases,
• according to the invention, for example, a domestic hot water generation unit is provided, which includes a building room heating system that emits the thermal energy from the heating water directly into the room 14, 15, 16 to be heated via a water-air heat exchanger,
• In an advantageous variant, the room unit 1 uses both a finned tube heat exchanger 4 with an attached fan 6 and at least one wall heating panel connected hydraulically in parallel, which is/are embedded in the housing 2, for example as water-carrying heating coils embedded in a heat-conducting sheet. This leads to an increased proportion of radiant heat and should contribute to realizing an advantageously pleasant "sense of space",
• in room unit 1, heat exchangers for room heating are switched on hydraulically. This takes place in an advantageous manner as a function of the flow temperature and the room temperature, for example in thermostat mode.

Claims (16)

Domestic hot water generating unit (1) for setting up/arranging in a building room (14) and for producing domestic hot water with a domestic hot water storage tank (3) for storing and delivering domestic hot water, especially service water, to an outlet fitting (17) such as a water tap and/or Shower head, wherein at least one drinking water heat exchanger device (11) is provided for heating the drinking water of the hot water tank (3), wherein at least the hot water tank (3) and the drinking water heat exchanger device ( 11) are arranged, characterized in that at least one building space heating surface (5) for heating/warming the building space (14) is provided at least inside and/or on and/or in the housing (2) and/or the casing (2). is provided. Domestic hot water generating unit according to Claim 1, characterized in that at least one heating water heat exchanger unit (4) encompasses the building space heating surface (5), the heating water heat exchanger unit (4) inside the housing (2) and/or the casing (2) is arranged. Domestic hot water generating unit according to one of the preceding claims, characterized in that at least one heating unit (19) is provided for heating the heating surface (5) of the building space. Domestic hot water generating unit according to one of the preceding claims, characterized in that the heating unit (19) is designed as a separate device (19) and/or is arranged in a separate device housing. Domestic hot water generating unit according to one of the preceding claims, characterized in that the heating unit is designed as an external energy source for generating thermal energy, so that at least the domestic hot water storage tank (3) and the drinking water heat exchanger device (11) can be heated with the thermal energy of the external energy source/heating unit is. Domestic hot water generating unit according to one of the preceding claims, characterized in that a heating fluid unit and/or at least two heating fluid lines between the housing/casing (2) and the heating unit (19) and/or the separate device (19) and/or the separate device housing is provided / arranged / are. Domestic hot water generating unit according to one of the preceding claims, characterized in that the housing (2) and/or the casing (2) has at least one air inflow opening (7) for the inflow of room air of the building space (14) and at least one air outflow opening (8) for outflow of room air in the building space (14). Domestic hot water generating unit according to one of the preceding claims, characterized in that at least one cooling unit (4, 19) is provided for cooling a cooling surface (5). Domestic hot water generating unit according to one of the preceding claims, characterized in that the heating water heat exchanger unit is/are designed as a cooling unit and/or that the building space heating surface is/are designed as the cooling surface of the cooling unit. Domestic hot water generating system with at least one building space, with at least one outlet fitting such as a water tap and/or shower head, and with a domestic hot water generating unit according to one of the preceding claims. Domestic hot water generating system according to the above claim, characterized in that the building space is designed as a living space, so that the domestic hot water generating unit is set up/arranged in the living space, and that the outlet fitting is arranged in a kitchen room and/or bathroom/washroom and/or toilet room is. Domestic hot water generating system according to one of the preceding claims, characterized in that at least the heating unit is designed to generate heating energy for the building space and/or for the domestic hot water of the domestic hot water storage tank and/or that at least one cooling unit is provided for cooling a cooling surface and/or the building space is. Domestic hot water generating system according to one of the preceding claims, characterized in that at least one heat pump unit comprises the heating unit and/or the cooling unit. Domestic hot water generation system according to one of the preceding claims, characterized in that the heat pump unit has a heat pump housing, fluid lines, in particular water lines, of a heating and/or cooling circuit being provided between the heat pump unit and the domestic hot water generation unit and/or the housing , In particular, the heat pump unit at least partially on an outer shell such as an outer wall and / or a Building roof of the building and / or in a boiler room and / or a basement room of the building is arranged. Domestic hot water generating system according to one of the preceding claims, characterized in that a building has a plurality of residential units/apartments with at least one building room and/or living space (14), each of the plurality of residential units/apartments (14) having a domestic hot water generating unit (1) and each having an apartment heating unit (19) and/or apartment heat pump unit (19) and/or apartment cooling unit (19) designed as the heating unit (19) and/or separate device (19) and/or external energy source (19). Domestic hot water generating system according to one of the preceding claims, characterized in that a building has a plurality of residential units/apartments (14) with at least one building room and/or living space (14), each of the plurality of residential units/apartments (14) having a domestic hot water generating unit (1) and wherein in particular a single/common heating unit (19) and/or heat pump unit (19) and/or cooling unit designed as the heating unit (19) and/or separate device (19) and/or external energy source (19). (19) is intended for the domestic hot water production units of the several residential units/apartments.

Images