CN118234997A - System for air conditioning indoor space of building - Google Patents

System for air conditioning indoor space of building Download PDF

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Publication number
CN118234997A
CN118234997A CN202280075704.8A CN202280075704A CN118234997A CN 118234997 A CN118234997 A CN 118234997A CN 202280075704 A CN202280075704 A CN 202280075704A CN 118234997 A CN118234997 A CN 118234997A
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CN
China
Prior art keywords
air
indoor
module
fresh air
circulating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202280075704.8A
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Chinese (zh)
Inventor
亚历山大·舍希纳
格哈德·伊勒
费利克斯·克莱贝尔
尼古拉·弗兰佐伊
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Evola Ltd
Original Assignee
Evola Ltd
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Publication date
Application filed by Evola Ltd filed Critical Evola Ltd
Priority claimed from PCT/EP2022/082493 external-priority patent/WO2023089138A1/en
Publication of CN118234997A publication Critical patent/CN118234997A/en
Pending legal-status Critical Current

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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/56—Heat recovery units

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  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Central Air Conditioning (AREA)

Abstract

A system for air conditioning an indoor space (2) of a building, the system having: an exhaust air duct (101) through which exhaust air (109) can be guided out of at least one of the indoor spaces (2); and a heat recovery device (103) configured to obtain thermal energy from the exhaust air (109), wherein the one or more indoor spaces (2) are provided with a circulating air module (5) with fresh air entrainment, the circulating air module being connected with a fluid circuit (105) of the air conditioning device (107), wherein the circulating air module (5) comprises: -a housing (13) having a fresh air inlet (39) configured such that fresh air (53) can flow into the housing (13), and having an indoor air inlet opening (33) and an indoor air outlet opening (35), -a heat exchanger (43) arranged in the housing (13), -an indoor air fan (49) arranged in the housing (13) with which indoor air flowing in as circulated air (55) through the indoor air inlet opening (33) can be conveyed through the heat exchanger (43), wherein the circulated air module (5) is configured such that fresh air (53) is fed to the circulated air (55) in the housing (13) and the circulated air (55) flows out from the indoor air outlet opening (35) together with the mixed fresh air (53) as supply air (57).

Description

System for air conditioning indoor space of building
Technical Field
The present invention relates to a system for air-conditioning an indoor space of a building, which is equipped with one or more circulating air modules having fresh air mixed therein, which can circulate not only the indoor air in the indoor space of the building but also the fresh air mixed therein.
Background
In closed buildings and indoor spaces, fresh air delivery, despite having an air conditioning system for heating and cooling the indoor air, still helps to promote stay comfort.
US 3 831,395A shows a cabinet-sized air conditioning installation in which the indoor air flows as circulating air along a first path through the cabinet. The circulating air flows through a cooling coil or evaporator, behind which an air movement device, which may be a fan, is arranged. Fresh air can flow into the air conditioning facility through the wall opening and mix with the circulated air.
DE 11 2011 101 405 T5 shows a ventilation assembly for windows, which is arranged in a frame, which ventilation assembly has a heat exchanger module in order to be able to achieve heat exchange between the air introduced from the outside space and the air introduced from the indoor space without mixing between the two.
DE 10 2010 016 077 A1 shows an air-conditioning device for air-conditioning a room having a floor and an underfloor cavity. A blower is arranged in the cavity or in a lower region of the air-conditioning device, with which blower air is caused to flow through the air-conditioning device into the room through the cavity through the floor. During the mixing operation, fresh air and room air can flow through the air conditioning system.
DE 203 13 693u1 shows an air conditioning system with a supply air module with an evaporator and a fresh air blower, an exhaust air module with a condenser and a second blower, and interfaces for exhaust air, supply air, waste air and outdoor air. The supply air module and the exhaust air module are arranged one above the other.
Disclosure of Invention
The object of the present invention is to provide a system for air conditioning an indoor space of a building with fresh air entrainment.
This object is achieved by a system having the features of claim 1.
The system for air-conditioning the indoor spaces of a building is provided with an exhaust air channel through which exhaust air can be guided out from at least one of the indoor spaces; the system is further provided with a heat recovery device configured to extract heat energy from the exhaust air. One or more of the indoor spaces is provided with a circulating air module with fresh air mixed in, the circulating air module being connected to a fluid circuit of the air conditioning apparatus. The circulating air module includes: a housing having a fresh air inlet configured to allow fresh air to flow into the housing, and having an indoor air inlet opening and an indoor air outlet opening; a heat exchanger disposed in the housing; and an indoor air fan disposed in the housing, with which indoor air flowing in as circulating air through the indoor air inlet opening can be conveyed through the heat exchanger. The circulating air module is configured such that fresh air is supplied to the circulating air in the housing, and the circulating air flows out of the indoor air exit opening as supply air together with the mixed fresh air.
Since fresh air is fed into the indoor space through the circulating air module, exhaust air is also discharged from the indoor space at other locations, and thermal energy of the exhaust air can still be utilized. The exhaust air channel is coupled with the heat recovery device so that the heat recovery device can draw heat from the exhaust air from the indoor space.
The fluid circuit of the air conditioning apparatus is coupled to the heat exchanger of the circulating air module such that the working fluid in the fluid circuit flows through the heat exchanger of the circulating air module. Thereby, the indoor air flowing through the circulating air module is air-conditioned, i.e., warmed or cooled. Such air conditioning apparatus typically include a pump to cause the working fluid to be carried through the fluid circuit. The temperature adjustment of the working fluid can be achieved in different ways, for example using a gas boiler.
The heat recovery device uses the heat energy in the exhaust air for different purposes. In one embodiment, the heat recovery device may transfer the recovered heat to other media, such as to potable water, to provide hot water, or to fresh air for a building. In the latter case, the heat recovery device warms or cools the fresh air for the circulating air module and is advantageously coupled with the circulating air module. Alternatively, the recovered heat is transferred to an intermediate medium in solid or liquid form and stored. This may be, for example, a reservoir. This stored energy is then output again and then transferred to other media. In one embodiment, the heat recovery device is configured as a heat pump to transfer thermal energy to other media. The heat recovery device is also suitable for cooling, for which purpose it is used, for example, in summer.
In one embodiment, the heat recovery device is configured to warm water and provide it as hot water, whereby a hot water facility of a building may be operated or supported.
In one embodiment, the heat recovery apparatus includes an air conditioning apparatus so that the recovered heat can be used to air condition the indoor space. In this case, the heat recovery device is used for tempering the working fluid.
In one embodiment, the heat recovery device is configured to extract heat back from the waste water and/or the exhaust air. Performance is improved by this more permanent mode of operation.
The circulated air is indoor air flowing into the circulated air module. The supply air flows out of the circulating air module into the indoor space and is conditioned circulating air mixed with fresh air. The circulating air module is configured to circulate and simultaneously condition indoor air in at least one indoor space of a building. Fresh air is mixed in order to improve the indoor climate. Advantageously, the circulating air module is configured such that fresh air can be drawn through the heat exchanger and mixed with the circulating air in the housing. The stay comfort is improved for the person breathing and consuming the breathing air by the fresh air mixing.
In one embodiment, the circulating air module with the mixing of fresh air can be placed into a building wall of the indoor space or can be fastened to a building wall of the indoor space or can be placed into a ceiling area or can be fastened to a ceiling of the indoor space. The circulating air module is securely mounted to the building wall or is at least partially recessed into the building wall such that the rear side of the housing faces away from the interior of the indoor space. The front side faces the indoor space. In a temperature-regulated air conditioning system of a building, a circulating air module contributes to temperature regulation and fresh air delivery. Although it is generally constructed as a stand-alone device, it can still be considered as a module of an air conditioning system of a discrete design, as part of which it can also be actuated. Alternatively or additionally, independent operation is possible.
The circulating air module can be mounted on a wall in the interior of the building or advantageously can be at least partially sunk into the building wall so that it is close to both the indoor air flowing through the circulating air module and the fresh air. The building wall on which the circulating air module is installed is advantageously a building wall separating an indoor space from an outdoor space. For example, the access to fresh air can be achieved by a recess in a wall of the building. The installation may be performed in a recess in the building wall, for example at the upper side of a door opening or window opening, which in turn facilitates access to fresh air. Advantageously, the mounting is effected in a roll screen box which is a box-like member for accommodating the roll screen to be rolled up. The installation is effected on the side of the roller blind box facing the indoor space, so that the function of the roller blind box and its roller blind is not affected. In summary, the circulating air module is a very compact device which can have a rectangular, in particular flat rectangular housing, so that it can be installed in a building in the manner described above.
The embodiment of the circulating air module that can be mounted on a building wall advantageously has a fresh air fan arranged in the housing that delivers fresh air, which fresh air fan is arranged laterally beside the indoor air radial fan between the front side and the rear side of the housing. Lateral means that the plane in which the fans are arranged does not extend perpendicularly between the front side and the rear side, but in particular extends parallel to the front side and the rear side.
In one embodiment, the circulating air module is disposed on an indoor space ceiling, such as in a ceiling area above a suspended ceiling. Alternatively, the circulating air module may be fastened to the ceiling such that the circulating air module protrudes into the indoor space. The access to fresh air can be made through a cutout in the outer wall of the building in the ceiling region. Fresh air delivery may be supported by a fresh air fan arranged outside the circulating air module. Alternatively, a fresh air duct is provided, through which fresh air is fed from the outside to the circulating air module.
The housing encloses at least one indoor air fan and a heat exchanger. The indoor air inlet opening and the indoor air outlet opening are air-gaps in the casing through which the indoor air flows into the casing as circulating air or flows out of the casing as supply air after the temperature of the indoor air flowing in as circulating air is adjusted and fresh air is mixed in. The housing has a front side and an opposite rear side, two opposite longitudinal sides and two opposite transverse sides. The longitudinal direction extends between the lateral sides, preferably parallel to the longitudinal sides. The depth direction extends transversely to the longitudinal direction between the front side and the rear side.
The indoor air fan is advantageously an indoor air radial fan. The indoor air radial fan has an axially arranged air inlet and a radial air outlet such that circulating air that has been drawn through the heat exchanger enters the indoor air radial fan in an axial direction and is radially discharged before flowing to the indoor air outlet. An indoor air flow diverter is advantageously provided that extends around the indoor air radial fan and is configured to divert air flowing from the indoor air radial fan to the indoor air exit opening. Such indoor airflow redirector may be configured as a spiral housing.
The heat exchanger is configured as an air heat exchanger to transfer thermal energy of the through-flowing air to a fluid flow through the heat exchanger, or vice versa. The fluid flow flows through the tube lines of the heat exchanger, and the room air flows sideways outside these tube lines, so that energy transfer occurs. In summer, cooling of the indoor air is sought by directing the heat energy of the circulated air away through the fluid flow in the heat exchanger, thereby cooling the indoor air. To heat the indoor air, heat energy from the fluid flow is transferred to circulating air flowing sideways. After flowing through the heat exchanger, the conditioned circulating air is discharged by the indoor air radial fan and flows out of the housing through the indoor air outlet opening. Advantageously, the heat exchanger comprises fins which turn the air so that it flows through the heat exchanger vertically, i.e. from one of the longitudinal sides to the other longitudinal side. In one embodiment, the fins are transverse fins, the fin main faces of which are arranged perpendicularly to the longitudinal direction, so that air is possible to escape in the depth direction. But this situation is already prevented at the front side by the front side of the housing. However, the air flowing vertically through the heat exchanger may be sucked out of the heat exchanger in the depth direction laterally through the air inlet of the indoor air radial fan at the rear side thereof.
The fresh air inlet and optionally a fan arranged at the fresh air inlet for delivering fresh air are provided for delivering fresh air and mixing fresh air into the tempered circulating air.
The fresh air fan is configured to draw fresh air into the housing through the fresh air inlet, the fresh air being mixed into the conditioned circulating air. The fresh air fan is likewise advantageously designed as a radial fan. In one embodiment, the fresh air fan is arranged outside the housing. Alternatively, the fresh air fan is advantageously arranged laterally beside the indoor air radial fan, so that they are arranged offset from one another in the longitudinal direction. Advantageously, they are oriented in rows on a line parallel to the longitudinal direction. Their inlets are directed in opposite directions, advantageously parallel or anti-parallel with respect to the depth direction. It is furthermore advantageous if a fresh air flow diverter is also provided, which extends around the fresh air fan and is configured such that fresh air flowing out of the fresh air fan is diverted into the flow channel leading to the heat exchanger. Such a fresh air flow diverter may have a wall extending helically around the fresh air fan between the front side and the rear side. The open side of the wall opens into the flow channel and thus diverts fresh air into it.
The heat exchanger is arranged between one of the front side and the rear side and the indoor air radial fan, the air inlet of the indoor air radial fan being directed towards the side. The indoor air radial fan is disposed between the heat exchanger and the other of the front side and the rear side. Advantageously, the heat exchanger is arranged on the front side and the indoor air radial fan is arranged on the rear side. An inverted arrangement is also possible.
Advantageously, the room air inlet opening and the room air outlet opening are arranged on the same longitudinal side or on opposite longitudinal sides of the housing. In one embodiment, the indoor air inlet opening is disposed adjacent to a front side, the heat exchanger is adjacent to the front side, and the indoor air outlet opening is disposed adjacent to a rear side, the one or more indoor air radial fans are adjacent to the rear side. In one embodiment, the fresh air inlet comprises one or more openings in the housing, which openings are arranged at the front side or the rear side. In an embodiment of the fresh air fan arranged in the housing, the fresh air inlet is preferably located on the rear side. In a ceiling-mountable embodiment, the fresh air inlet is arranged adjacent to a longitudinal side facing away from the indoor air inlet opening and facing away from the indoor air outlet opening, wherein the fresh air inlet is preferably arranged on the side adjacent to the heat exchanger.
The front and rear sides of the housing divert the indoor air flow into the heat exchanger and after passing through the indoor air radial fan, toward the indoor air exiting the opening. If the heat exchanger is arranged on the front side and the indoor air radial fan is arranged on the rear side, the indoor air inlet opening is arranged in one longitudinal side adjacent to the front side and the indoor air outlet opening is arranged in the same longitudinal side adjacent to the rear side. The indoor air flows into the housing from below as circulating air, flows from front to back there, and then flows out of the housing downward as supply air.
In one embodiment, the indoor air radial fan is one of a plurality of indoor air radial fans arranged side by side between the front side and the rear side of the housing such that the axially arranged air inlets of the indoor air radial fans are both directed towards the heat exchanger. The fresh air fan is arranged as a relatively outer fan adjacent to one of the lateral sides. By providing a plurality of indoor air radial fans, which are arranged in particular in the longitudinal direction of the heat exchanger, an elongated circulating air module for being enclosed in a roll-up box can be provided that performs well. A plane extends through the indoor air radial fan such that the axially disposed air inlets are directed away from the same side of the plane. The axial rotational axes of the indoor air radial fans extend perpendicularly or almost perpendicularly to this plane, except for dimensional and manufacturing tolerances, and advantageously, the axial rotational axes are mutually parallel or almost parallel, except for dimensional and manufacturing tolerances. Although the indoor air radial fans may be arranged axially offset on this plane, their air inlets are preferably oriented such that they lie in one plane or almost in one plane, with the exception of dimensional tolerances and manufacturing tolerances, the indoor air radial fans are not axially offset.
In one embodiment, the indoor air flow diverter extends around one or more indoor air radial fans and is configured to divert air flowing from the indoor air radial fans to the indoor air exit opening. Advantageously, one or more radial fans for indoor air are formed modularly, so that the fan module with one radial fan for indoor air can be removed from the circulating air module in a simple manner and, if necessary, can be replaced. If a fresh air fan is provided in the housing, the fresh air fan can be constructed modularly.
Advantageously, the circulating air module comprises a flow channel configured to direct the fresh air delivered towards the heat exchanger through which the fresh air can be drawn by the indoor air radial fan. In one embodiment, the flow channel extends between the heat exchanger and one longitudinal side of the housing and is open or has a plurality of openings at the side facing the heat exchanger. The longitudinal side is advantageously opposite to the longitudinal side where the room air inlet opening and the room air outlet opening are located. The flow channel is configured as a flow barrier against the indoor air radial fan such that air exiting the flow channel neither flows directly to the indoor air outlet nor to the indoor air radial fan, but must first flow through the heat exchanger. Thus, fresh air flows vertically, e.g. from top to bottom, through the heat exchanger from one of the longitudinal sides, while indoor air flows vertically, e.g. from bottom to top, through the heat exchanger from the opposite longitudinal side. Due to the suction effect of the one or more indoor air radial fans, a large part of the fresh air and the indoor air flow vertically to the inlet of the indoor air radial fan and mix when they meet in the indoor air radial fan. Fresh air discharged from the one or more indoor air radial fans is mixed with circulated air that is simultaneously drawn through the heat exchanger by the one or more indoor air radial fans. However, due to turbulence and deflection, air mixing can also occur in front of and behind the indoor air radial fan. Fresh air and circulated air flowing into the heat exchanger from opposite sides are also mixed in the heat exchanger.
The circulating air module system comprises the circulating air module described above and a mounting frame which can be integrated into a building wall and into which the circulating air module can be pushed and fastened, so that the circulating air module can be installed sunk into the building wall. Such a mounting frame may be a drywall frame and is for example integrated into a building wall of a prefabricated house.
Advantageously, the mounting frame can be inserted into the roller blind box such that the rear side of the circulating air module which is pushed into the mounting frame faces the interior of the roller blind box. The incorporation into the roller shutter box is accompanied by an advantageous positioning of the circulating air module above the window and enables easy access to the fresh air through the roller shutter box. In one embodiment, the mounting frame can be encased in a roll-up box such that the indoor air inlet opening and the indoor air outlet opening are located at the lower longitudinal side of the housing at least partially constituting the upper side of the indoor space side of the window opening. The circulating air module may be completely hidden under a wall finish (e.g., plasterboard or stucco) except that the indoor air inlet opening and the indoor air outlet opening are located on the lower longitudinal sides.
In one embodiment, the system has a circulating air module and a mounting frame that can be encased in a ceiling area or can be fastened to the ceiling. Advantageously, the mounting frame can be mounted on a suspended ceiling such that the indoor air inlet opening and the indoor air outlet opening of the circulating air module face the interior of the room. In one embodiment, the mounting frame or fresh air inlet can be coupled with a fresh air channel via which fresh air can be directed to the circulating air module. This enables a reliable fresh air supply even in the case of a ceiling-mounted circulating air module.
Drawings
Some embodiments will be explained in detail below with reference to the drawings. Wherein:
fig. 1 illustrates an embodiment of a system for air conditioning an indoor space of a building;
FIG. 2 schematically illustrates an additional embodiment of a system for air conditioning;
FIG. 3 schematically illustrates yet another embodiment of a system for air conditioning;
FIG. 4 schematically illustrates yet another embodiment of a system for air conditioning;
Fig. 5 shows a schematic front view of a building wall of an indoor space;
FIG. 6 shows a schematic cross-sectional view of an embodiment of a circulating air module in a roller shade cartridge;
FIG. 7 illustrates a three-dimensional rear view of an embodiment of a circulating air module having a mounting frame;
FIG. 8 illustrates a three-dimensional front view of an embodiment of a circulating air module having a mounting frame;
FIG. 9 shows a schematic front view of an embodiment of a circulating air module with the front housing wall removed;
FIG. 10 shows a schematic rear view of an embodiment of the circulating air module with the rear housing wall removed;
FIG. 11 shows a side cross-sectional view of the circulated air module;
FIG. 12 shows a schematic cross-sectional side view of the fresh air inlet, filter and fresh air fan;
fig. 13 shows a schematic front view of a fresh air fan within the housing;
FIG. 14 shows a three-dimensional rear view of a further embodiment of a circulating air module;
FIG. 15 shows a longitudinal cross-sectional view of the circulated air module;
Fig. 16 shows a further longitudinal section through the circulating air module;
FIG. 17 shows a side cross-sectional view of the circulated air module;
FIG. 18 illustrates flow through a longitudinal cross-sectional view based recirculation air module;
FIG. 19 illustrates an embodiment of a circulated air module system;
FIG. 20 shows a top view of a mounting frame in which a circulating air module has been pushed in;
FIG. 21 shows an additional top view of the mounting frame in which the circulating air module has been pushed in;
FIG. 22 shows a three-dimensional detail of the circulated air modular system;
FIG. 23 shows a three-dimensional view of a circulated air module system;
FIG. 24 shows a diagram of the interior of the circulated air module system;
FIG. 25 shows a further illustration of the interior of the circulated air module system;
FIG. 26 shows a side cross-sectional view through the circulated air module system;
FIG. 27 shows a further embodiment of a circulated air module;
FIG. 28 shows a schematic view of a ceiling-mounted embodiment of a circulated air module system; and
Fig. 29 shows a schematic view of an embodiment of a ventilation system.
In the drawings, identical or functionally identical components are provided with identical reference numerals. The designations of "front"/"rear", "upper"/"lower" or the like are used to simplify and clarify the understanding of the embodiments, and do not necessarily indicate absolute positions in space, but rather indicate relative positioning of features with respect to each other.
Detailed Description
Fig. 1 shows a system for air conditioning an indoor space 2 of a building. The building may be, for example, a residential building or an office building. However, the present invention can also be applied to different types of buildings. Wherein each indoor space 2 is connected via an exhaust air opening 102 to an exhaust air channel 101, which exhaust air channel 101 is used for guiding exhaust air away from the indoor space 2.
The heat recovery device 103 coupled to the exhaust air channel 101 is configured to recover heat from the exhaust air 109.
In the indoor space 2, there is a circulating air module 5 with fresh air mixed in, which is connected to the fluid circuit 105 of the air conditioning device 107. Warming or cooling of the indoor space 5 is achieved via the fluid circuit 105 by letting the working fluid in the fluid circuit flow through the heat exchanger of the circulating air module 5 and thus warming or cooling the air in the indoor space 2. The circulating air module 5 circulates indoor air in the indoor space 2, in which process the indoor air is warmed or cooled and fresh air is added. In the present embodiment, fresh air is led from the outside to the circulating air modules via fresh air channels 85, respectively. Alternatively, the circulation air module 5 can also be positioned at a recess of the outer wall, through which recess fresh air can enter the circulation air module 5.
In the present embodiment, the main components of the air conditioning apparatus 107 and the heat recovery apparatus 103 are exemplarily arranged in a basement of a building. Alternative arrangements are also conceivable, for example at the extension or outside.
The system may be provided for an indoor space 2 of a whole building. Alternatively, the system may perform air conditioning on only a portion of the indoor space 2 (e.g., a certain floor). It is also conceivable that the heat recovery device 103 and the air conditioning device 107 supply different rooms of the building. For example, in one embodiment, an air conditioning device 107 is provided for each floor, and the heat recovery device 103 is operated with the exhaust air of the entire building.
Different embodiments of the air conditioning apparatus 107 and the heat recovery apparatus 103 will be described below.
Fig. 2 schematically shows an embodiment of a system for air conditioning. For clarity, only one indoor space 2 with a circulating air module 5 is schematically shown. Nevertheless, the system can also be used for a plurality of indoor spaces 2 with circulating air modules 5.
In the present embodiment, the heat recovery device 103 provides pre-warmed fresh air to the circulating air module 5 in order to thus support warming of the indoor space 2. The cooled fresh air may support cooling. For example, fresh air may be directed to the circulating air module 5 through the fresh air channel 85, or may be directed to the circulating air module 5 up to the cutout of the exterior wall. The circulating air module 5 adjusts the temperature of the indoor air flowing in as circulating air and supplies fresh air 53 to the circulating air. This indoor air circulation is indicated by the rounded arrows.
In the present embodiment, the exhaust air 109 of the indoor space 2 is conveyed to the heat recovery apparatus 103 exemplarily using the fan 113. The outdoor air 115 is conveyed to the input side of the heat recovery device 103 and provides the exhaust air 117 and warmed outdoor air as fresh air 53 at the output side. Advantageously, the outdoor air 115 is filtered. The heat recovery device 103 is configured to warm the outdoor air 115 with the heat of the exhaust air 109 and to supply it as warmed fresh air 53 to the circulating air module 5.
The heat recovery apparatus 103 may be provided intensively for the entire building or a plurality of buildings. Alternatively, the heat recovery device 103 is configured separately so that it supplies only a portion of the building. For example, in a hotel, the heat recovery device 103 may be provided for only rooms for a certain floor on a floor-by-floor basis, whereby the heat recovery device 103 is provided for each floor.
The air conditioning device 107, which adjusts the temperature of the working fluid in the fluid circuit 105 for cooling or warming the indoor air in the indoor space 2, may operate independently of the heat recovery device 103. If the air conditioning device 107 is provided mainly for heating, it may have, for example, a gas boiler or a photovoltaic heating device. Alternatively, it may be coupled with a heat pump, for example.
Fig. 3 schematically shows an embodiment of a system for air conditioning. For clarity, only one indoor space 2 with an air circulation module 5 is schematically shown. Nevertheless, the system can also be used for a plurality of indoor spaces 2 with circulation modules 5.
The exhaust air 109 of the indoor space 2 is conveyed to the heat recovery apparatus 103 exemplarily using a fan 113. In the present embodiment, the heat recovery device 103 is configured as a heat pump 111, which uses the heat obtained from the exhaust air 109 for hot water preparation. The manner in which the heat pump 111 operates, particularly in conjunction with a building heating section (and cooling section), is well known. The hot water 119 is led by a line to a drawing station 121 where it can be drawn. A draw station 121 is exemplarily shown in fig. 3. Additionally, the heat in the heat recovery device 103 may also be taken from the waste water and/or the outdoor air, which is indicated by the dashed arrow 123.
The air conditioning device 107, which adjusts the temperature of the working fluid in the fluid circuit 105 for cooling or warming the air in the indoor space 2, may operate independently of the heat recovery device 103. The air conditioning device 107 may have, for example, a gas boiler or a heat pump.
In the simplest case, the fresh air is conveyed through a recess in the building, in front of which recess the circulation air module 5 is mounted, so that fresh air 53 can flow into the circulation air module 5 through the recess. The circulation air module 5 can also be mounted in other ways so that, for example, when a part of the circulation air module 5 protrudes into a suspended ceiling area with fresh air delivery, for example through a recess in a building, fresh air delivery is obtained for the circulation air module. Alternatively, the fresh air 53 may be guided from the outside to the circulating air module 5 via a fresh air channel 85.
In the present embodiment, the fresh air supply, the heat pump 111 and the air conditioning device 107 are independent of each other, which results in a simple installation and an independent optimization of the fresh air supply, the heat pump 111 and the air conditioning device 107.
Fig. 4 schematically shows an embodiment of a system for air conditioning. For clarity, only one indoor space 2 with a circulating air module 5 is schematically shown. Nevertheless, the system can also be used for a plurality of indoor spaces 2 with air circulation modules 5.
The exhaust air 109 of the indoor space 2 is conveyed to the heat recovery apparatus 103 exemplarily using a fan 113. In the present embodiment, the heat recovery apparatus 103 is configured as a heat pump 111 that uses heat acquired from the exhaust air 109 for air conditioning the indoor space 2. The heat pump 111 is coupled to the fluid circuit 107 and adjusts the temperature of the working fluid. The fluid circuit 107 is coupled to the circulating air module 5. Additionally, the heat recovery device 103 may also extract heat from the waste water and/or the outdoor air, which is indicated by the dashed arrow 123.
As already described in connection with fig. 3, fresh air delivery is also achieved in this embodiment.
In the present embodiment, the fresh air supply and the heat pump 111 are independent of each other, which results in a simple installation and an independent optimization of the fresh air supply and the heat pump 111.
An embodiment of the circulating air module 5, which can be used in the above-described air conditioning and fresh air mixing of the indoor space 2, is described below. The way in which fresh air is delivered will also be described below.
Fig. 5 shows a schematic front view of a building wall 1 with windows 3 of an indoor space, into which an embodiment of a circulating air module 5 is placed.
The building wall 1 with the window 3 is an outer wall of a building. Such a building wall 1 may be constructed as a prefabricated wall of a prefabricated house. Above the window opening, a circulation air module 5 is arranged, which in the present embodiment extends over the entire window width. The circulating air module 5 is placed into the building wall 1 so that it is sunk into the building wall. The front side of the circulating air module 5 faces the indoor space. The front side of the circulating air module 5 may terminate flush with the building wall 1 or also be arranged under a wall finish (e.g. plasterboard or plaster) as in the present embodiment. In particular, the circulating air module 5 can be placed in a roller blind box or roller blind box opening above the window opening. In alternative embodiments, the circulating air module 5 may extend partially beyond the building wall 1 or be mounted on the building wall.
The circulating air module 5 is configured to heat, cool, and assist in delivering fresh air to indoor air of an indoor space. The circulating air module 1 can be mounted in or on a building wall 1 such that the indoor air inlet opening and the indoor air outlet opening in the circulating air module 5 are arranged in the building interior and the circulating air module 5 has a fresh air access, for example by a roll-up box. In the present embodiment, the lower longitudinal side of the circulating air module 5, which at least partially forms the upper covering of the window opening, is accessible, so that the indoor air can flow into the circulating air module 5 as circulating air, while the supply air as conditioned circulating air with fresh air mixed in can flow out.
Advantageously, the circulating air module 5 can be built into a mounting frame, for example a drywall frame integrated into the building wall 1. In the case of a building wall 1 constructed as a prefabricated wall, the mounting frame is advantageously already installed and integrated into the building wall 1 when the prefabricated wall is manufactured, in order to provide space for a circulating air module 5 to be placed later. Advantageously, the mounting frame is integrated into the roller shutter box.
Fig. 6 schematically shows a sectional view of an embodiment, wherein the circulating air module 5 is mounted in a roller shutter box 7. The roll-up cassette 7 is arranged above a window in a building wall 1 separating an indoor space and an outdoor space from each other. The circulating air module 5 is mounted above the window 3 at the side of the roller blind box 7 facing the indoor space such that the rear side 17 of the circulating air module 5 faces the interior of the roller blind box, whereas the indoor air inlet opening and the indoor air outlet opening arranged at the lower longitudinal side 21 of the circulating air module 5 are positioned in the indoor space, and the lower longitudinal side 21 at least partly constitutes the upper side of the window opening. The front side 15 of the circulating air module 5 is covered by a wall finish 9, such as plasterboard, so as to form a flat wall surface above the window 3.
Fig. 7 shows a three-dimensional rear view of an embodiment of the circulating air module 5 with a mounting frame 11.
The circulating air module 5 comprises a housing 13 having a front side 15, an opposite rear side 17, an upper longitudinal side 19 and an opposite lower longitudinal side 21, and two opposite lateral sides 23, 25. The basic shape of the housing 13 is an elongated cuboid and is dimensioned such that it can be inserted into the roller blind box 7 or fastened thereto. The housing 13 is of flat construction so that it can be completely immersed in the building wall 1 and the front side 15 can be covered by the wall finish 9.
A fresh air inlet 39, which is formed as a recess, is arranged in the rear side 17 of the housing 13, through which fresh air can flow into the housing 13. The recess is provided in the area of the rear side 17 adjacent to one of the lateral sides 23. A filter 41 is provided in the housing interior in front of the recess in order to clean the incoming fresh air.
The mounting frame 11 is typically made of metal. It extends along the upper longitudinal side 19 and has metal tongues 27 extending parallel to and spaced apart from the lateral sides 23, 25, where the mounting frame can be fastened in the building wall 1. The mounting frame 11 furthermore has struts 29 on the front and rear sides of the circulating air module 5 and a push-in opening through which the circulating air module 5 can be pushed into the mounting frame 11 from below.
At the lower edge of the front side, an L-shaped profiled element 59 is provided which supports the wall finish 9 covering the circulating air module 5 which is placed into the building wall 1.
The circulating air module 5 can be pushed from below into a mounting frame 11 which can be integrated into the building wall 1, in particular into the roller blind box 7. During installation, the circulating air module 5 is pushed into the installation frame 11 and locked, so that the circulating air module is only accessible from below.
At the upper longitudinal side 19 of the housing 13 there is a rotatable flat catch 31, the width of which is no greater than the width of the housing 13. The catch 31 is oriented in the longitudinal direction when pushed into the mounting frame. After pushing in, the circulating air module 5 is only accessible from below. The catches 31 are turned so as to extend from the front and/or rear side beyond the longitudinal sides 13 and to engage in corresponding slots in the mounting frame 11. This approximately quarter turn is achieved by means of a tool which is inserted into the housing 13 from below. The circulating air module 5 is held and locked in the mounting frame 11 by the swung-out catch 31.
Fig. 8 shows a three-dimensional front view of an embodiment of the circulating air module 5.
At the lower longitudinal side 21, an indoor air inlet opening 33 and an indoor air outlet opening 35 are arranged, through which the indoor air flows into the housing 13 as circulating air or flows out of the housing 13 as supply air. The indoor air inlet opening 33 is formed elongate and is arranged adjacent to the front side 15. The room air outlet opening 35 is elongate and arranged adjacent to the rear side 17. In order to protect the components in the housing and to influence the flow behaviour, fins and a grille 37 are provided at the indoor air inlet opening 33 and the indoor air outlet opening 35, the grille being magnetically fixed in order to enable easy access to the circulating air module 5 from below, in particular for locking and unlocking in the mounting frame 11 when fitting or removing.
Through the accessible lower longitudinal side 21, the room air flows into the circulation air module 5 as circulation air and flows out of the circulation air module 5 as supply air after heating or cooling and fresh air addition.
Fig. 9 schematically shows a front view of the circulating air module 5, in which the front housing wall has been removed.
A heat exchanger 43 is arranged in the housing interior, which heat exchanger extends along the front side 15. The heat exchanger 43 extends between the lateral sides 23, 25, but does not reach the lateral sides 23, 25 so that lateral edge areas adjacent to the lateral sides 23, 25 provide room for other components. In these edge regions, a control 45 and a fresh air fan 47 are provided next to the heat exchanger 43. The heat exchanger 43 has a flat rectangular parallelepiped basic shape, and illustratively has transverse fins. The lower side thereof is disposed above the indoor air inlet opening 33 so that the indoor air flowing in as circulated air impinges on the heat exchanger 43.
Adjacent to the lateral side 25, between the front and rear sides 15, 17, laterally beside the heat exchanger 43, an electronic control 45 of the circulating air module 5 is arranged. The control 45 controls the operation of the circulating air module 5, in particular the heating and cooling of the room air and the fresh air supply. The control 45 can exchange data with other components of the air conditioning system, of which the circulating air module 5 is only a part, and can either be controlled centrally or directly by means of suitable (remote) operating elements. The control unit 45 is provided with additional functional elements: i.e. a power supply for the components of the circulating air module 5, a computer/CPU, sensors for temperature and humidity and optionally a water interface for humidifying the circulating air.
Adjacent to the other lateral side 23, between the front and rear sides 15, 17 and laterally beside the heat exchanger 43, a fresh air fan 47 for sucking in and dispensing fresh air and a filter 41 for purifying the inflowing fresh air are arranged. The filter 41 is arranged between the fresh air inlet 39 and the fresh air fan 47.
Fig. 10 shows a schematic rear view of the circulating air module 5, in which the rear housing wall and the filter 41 have been removed.
A plurality of indoor air radial fans 49, each having an axially disposed air inlet, are disposed in the housing interior. In the present embodiment four indoor air radial fans 49 are provided, which are arranged side by side along the rear side 17 such that their air inlets are directed towards the heat exchanger 43. The indoor air radial fans 49 are arranged side by side in the longitudinal direction between the fresh air fan 47 and the control portion 45.
The fresh air fan 47 is likewise configured as a radial fan and is arranged laterally beside the row of room air radial fans 49, so that it is positioned between the room air radial fans and the lateral side 23. The axially arranged air inlet of the indoor air radial fan is directed towards the fresh air inlet 39 in the rear side 17 such that the fresh air inlet is directed counter to the air inlet direction of the indoor air radial fan 49.
Fig. 11 shows a side sectional view of the circulating air module 5, which extends through one of the indoor air radial fans 49. The indoor air inlet opening 33 is arranged below the heat exchanger 43, and the indoor air outlet opening 35 is arranged below the indoor air radial fan 49. The open areas above the indoor air inlet opening 33 and the indoor air outlet opening 35 are spatially separated. Above the heat exchanger 43, a flow channel 51 extends in the longitudinal direction between the heat exchanger 43 and the upper longitudinal side 19 of the housing 13, which flow channel leads fresh air 53 from the fresh air fan 47 to the upper side of the heat exchanger 43. The direct path from the flow channel 51 to the indoor air radial fan 49 is blocked and only through the heat exchanger 43.
Fig. 12 shows a schematic side sectional view of the fresh air inlet 39, the filter 41 and the fresh air fan 47. Fresh air 53 is drawn axially by fresh air fan 47 through fresh air inlet 39, which is configured as a recess. The fresh air 53 is cleaned by the filter 41 before it impinges on the fresh air fan 47. The fresh air fan 47 radially discharges the air flowing into the housing 13, diverting the air flowing into the flow passage 51. This is supported in that the housing 13 is closed below the fresh air fan 47 and that a spatial separation, for example a wall, is provided between the fresh air fan 47 and the indoor air radial fan 49.
Fig. 13 schematically shows a front view of the fresh air fan 47. The fresh air fan 47 discharges the fresh air 53 flowing into the housing 13 radially, so that the fresh air flows upward along the lateral side 23 into the flow channel 51 extending above the fresh air fan 47 and from there is diverted to the heat exchanger 43.
Fig. 10 and 11, like fig. 12 and 13, illustrate the operation of the circulating air module 5 in conjunction with arrows representing fresh air 53, circulating air 55, and supply air 57. The indoor air flowing into the circulating air module 5 is referred to as circulating air 57, and the air flowing out of the circulating air module 5 into the indoor space is referred to as supply air 57. In operation, the indoor air radial fan 49 draws indoor air as circulated air through the indoor air inlet opening 33 and through the heat exchanger 43 and radially expels it, causing it to flow out of the housing 13 as supply air 57 through the indoor air outlet opening 35. The interaction of the circulated air 55 with the heat exchanger 43 causes a temperature change of the indoor air while passing through the heat exchanger 43. In the cooling operation, the indoor air is tempered to be pleasant cool even in summer. In winter, heating is particularly performed.
Mixing of fresh air into the circulating air 55 is achieved by means of a fresh air fan 47 simultaneously with circulating and tempering the indoor air, which fresh air fan 47 sucks fresh air 53 in the axial direction through a fresh air inlet 39 in the rear side 17 of the housing 13 and discharges the fresh air radially, whereby the fresh air is diverted through a flow channel 51 to the upper side of the heat exchanger 43. Fresh air 53 is also drawn through heat exchanger 43 by indoor air radial fan 49 and deflected radially so that fresh air 53 mixed with circulated air 55 is also discharged as supply air 57 through indoor air outlet opening 17. Since the fresh air fan 47 is arranged on the edge side, fresh air 53 is drawn through the heat exchanger 43, in particular by the indoor air radial fan 49 adjacent to the fresh air fan 47. This is illustrated by the arrow with reference numeral 53 in fig. 10. Despite the uneven distribution, a mixture sufficient to create a pleasant indoor climate is present, wherein the circulating air 55 and the fresh air 53 are additionally mixed between the air outlet of the indoor air radial fan 49 and the indoor air outlet opening 35 by turbulence when leaving the indoor air radial fan 49.
Fig. 14 shows a three-dimensional rear view of a further embodiment of the circulating air module 5 without a mounting frame.
The circulating air module 5 comprises a housing 13 having a front side 15, an opposite rear side 17, an upper longitudinal side 19 and an opposite lower longitudinal side 21, and two opposite lateral sides 23, 25. The basic shape of the housing 13 is an elongated cuboid and is advantageously dimensioned such that it can be inserted into the roller blind box 7 or fastened thereto. The housing 13 is of flat construction so that it can be completely immersed in the building wall 1 and the front side 15 can be covered by the wall finish 9. Alternatively, the housing 13 can also extend flush with the building wall 1 and can be covered in a simple manner by wallpaper, for example.
A fresh air inlet 39, which is formed as a rectangular recess, is arranged in the rear side 17 of the housing 13, through which fresh air can flow into the housing 13. The recess is located in a region of the rear side 17 adjacent to one of the lateral sides 23. In the interior of the housing, a filter 41 is provided in front of the recess in order to clean the incoming fresh air.
The housing 13 may be provided with a mounting frame 11, which as an example has been described in connection with fig. 7, but is not shown in fig. 14. At the upper longitudinal side 19 of the housing 13, a rotatable flat catch 31 is present, by means of which the housing 13 can be locked in the mounting frame 11, as described in connection with fig. 7.
Three cross-sectional planes A-A, B-B and C-C are depicted in fig. 14, their cross-sectional views being shown in the following figures.
Figure 15 shows a longitudinal section through the circulating air module in the A-A plane.
At the lower longitudinal side 21, an indoor air inlet opening 33 and an indoor air outlet opening 35 are arranged, through which indoor air flows into the housing 13 as circulating air 55 and out of the housing as supply air 57. The room air inlet opening 33 visible in fig. 15 is formed elongate and arranged adjacent to the front side 15.
In the upper housing region, a flow channel 51 is arranged, which extends along the upper longitudinal side 19 and is formed as an elongated rectangular cavity between the front side 15 and the rear side 17.
Adjacent to one of the lateral sides 23, a region is provided for the fresh air fan 47 and the filter 41, which extends between the front and rear sides 15, 17. The filter 41 is configured to purify the inflow fresh air 53. A filter 41 (not shown in fig. 15) is arranged between the fresh air inlet 39 and the fresh air fan 47. The fresh air fan 47 is configured to intake and dispense fresh air 53. The fresh air fan 47 is a radial fan and is configured to draw fresh air 53 through the fresh air inlet 39 and the filter 41 in the axial direction and to discharge the fresh air radially. Extending around the fresh air fan 47 between the front side and the rear side is a fresh air flow diverter 61 which is formed as a curved wall and diverts fresh air 53 flowing radially out of the fresh air fan 47 into the flow duct 51. The wall extends around the fresh air fan 47 in a spiral curve circumferentially gradually away from the fresh air fan 47 and opens into the flow channel 51, so that the fresh air 53 sucked by the fresh air fan 47 is diverted upwards into the flow channel 51.
In the housing interior, a heat exchanger 43 is arranged at the front side 15. The heat exchanger 43 extends in the longitudinal direction between the other transverse side 25 and the fresh air fan 47, which is separated from the fresh air fan 47 by a wall, so that fresh air 53 cannot flow in the longitudinal direction directly from the fresh air fan 47 onto the heat exchanger 43. The heat exchanger 43 is disposed between the flow passage 51 and the indoor air inlet opening 33. The flow channel 51 is open at its underside towards the heat exchanger 43 so that air can flow from the flow channel 51 onto the heat exchanger 43. In the depth direction, the heat exchanger 43 extends between the front side 15 and the indoor air radial fan 49.
The heat exchanger 43 has a flat rectangular parallelepiped basic shape. It comprises transverse fins 63 extending between the front and rear sides of the heat exchanger and extending from top to bottom. The spacing of fins 63 shown in fig. 15 is not to scale. Fins 63 extending from top to bottom divert the air flow in a vertical direction through the heat exchanger 43. In principle, air escape from the front or rear side can be achieved with these fins 63, but is blocked on the front side by the front side 15 of the housing 13. Alternatively or additionally, front and rear heat exchanger walls can be provided, which prevent lateral air escape and only allow air escape in the depth direction via suitable recesses to the indoor air radial fan 49.
Since the heat exchanger 43 is positioned between the flow passage 51 and the indoor air inlet opening 33, and the orientation of the fins 63 thereof is also the same, the inflowing indoor air impinges on the heat exchanger 43 from below as the circulating air 55 and turns vertically upward. Fresh air 55 impinges on the heat exchanger 43 from above through the flow channel 55 and is diverted vertically downwards.
Fig. 16 shows a longitudinal section through a plane B-B of the circulation air module 5, wherein the section plane extends in the region of the rear side of the circulation air module 5.
A plurality of indoor air radial fans 49, each having an axially disposed air inlet, are disposed in the housing interior. In the present embodiment, four indoor air radial fans 49 are provided, which are arranged side by side along the rear side 17 so that their air inlets face the heat exchanger 43. The indoor air radial fans 49 are arranged side by side between the fresh air fan 47 and the filter 41 (which are arranged one above the other in the depth direction) and the lateral side 25 facing away from the fresh air fan 47. The indoor air radial fans 49 are arranged side by side, i.e. offset in a longitudinal direction extending parallel to the longitudinal sides 19, 21.
The axially arranged air inlets of the row of indoor air radial fans 49 are arranged opposite to the direction of the air inlets of the fresh air fans 47, which air inlets are directed towards the fresh air inlet 39 in the rear side 17. The air inlet of the indoor air radial fan 49 is directed towards the heat exchanger 43, the indoor air radial fan 49 being arranged between the heat exchanger and the rear side 17. The indoor air radial fan 49 is disposed below the flow passage 51. Further, the indoor air radial fan 49 is arranged along a straight line extending in the longitudinal direction between the flow passage 51 and the indoor air leaving opening 35. The flow channel 51 is configured such that it is a flow barrier for the indoor air radial fan 49, but allows air to pass through the heat exchanger 43, so that air cannot flow from the flow channel 51 directly onto the indoor air radial fan 49, but must flow via the heat exchanger 49 to the indoor air radial fan 48.
The areas surrounding the indoor air radial fans 49 are each configured as an indoor air flow diverter 65 in the form of a spiral housing in that between the rear side 17 and the heat exchanger 43, a curved wall extends around each indoor air radial fan 49, which diverts the supply air 57 flowing out of the indoor air radial fans 49 to the indoor air outlet opening 35. The wall extends around the indoor air radial fan as a spiral curve gradually away from the indoor air radial fan 49 and opens into the outlet of the indoor air leaving opening 35. Accordingly, the air flowing out of the indoor air radial fan 49 as the supply air 57 is diverted from the housing 13 into the indoor space. The mixture of fresh air 53 and circulated air 55 exits the housing 13 through the indoor air exit opening 35 as supply air 57.
The space between the walls of the indoor air flow redirector 65 is advantageously filled (as indicated by hatching in fig. 16) or at least covered, so that a barrier is formed for air escaping in the depth direction from the heat exchanger 43 and so that air can only or substantially leave from the heat exchanger 43 via the indoor air radial fan 49 positioned in the indoor air flow redirector 65.
Fig. 17 shows a side cross-section through plane C-C of the circulating air module 5, with an indoor air inlet opening 33 arranged below the heat exchanger 43 and an indoor air outlet opening 35 arranged below the indoor air radial fan 49. The open spaces above the indoor air inlet opening 33 and the indoor air outlet opening 35 are spatially separated. Above the heat exchanger 43, a flow channel 51 extends in the longitudinal direction between the heat exchanger 43 and the upper longitudinal side 19 of the housing 13, which flow channel leads fresh air 53 from the fresh air fan 47 to the upper side of the heat exchanger 43. The direct path from the flow channel 51 to the indoor air radial fan 49 is blocked so that air can flow only through the heat exchanger 43 to the indoor air radial fan 49.
Furthermore, an electronic control 45 for the circulating air module 5 is provided in the housing 13, which is not shown in the sectional view because of its positioning and compact dimensions.
Fig. 18 illustrates the operation of the circulating air module 5 in combination with a longitudinal section and arrows of the circulating air module 5 of fig. 15.
Fresh air 53 is drawn axially through fresh air inlet 39 by fresh air fan 47. Before striking the fresh air fan 47, the fresh air 53 is purified by the filter 41. The fresh air fan 47 radially discharges the fresh air 53 flowing into the housing 13. Fresh air 53 is diverted into the flow channel 51 by a fresh air flow diverter 61. This is supported in that the housing 13 is closed below the fresh air fan 47 and a spatial separation is provided between the fresh air fan 47 and the heat exchanger 43 and the room air radial fan 49.
The fresh air 53 flows along the flow channel 51 above the heat exchanger 43, with increasing distance from the fresh air fan 47, more and more fresh air 53 flows away through the heat exchanger 43, so that the fresh air 53 is distributed in the heat exchanger 43. However, the fraction of fresh air 53 that is flowing away decreases along the path. The fresh air 53 is diverted downwards in the vertical direction by the fins 63. Fresh air is drawn in by the indoor air radial fan 49 such that the fresh air 53 flows into the heat exchanger 43 mainly vertically in the region above the indoor air radial fan 49 and is deflected vertically by the fins 63 in the direction of the indoor air radial fan 49, after which the fresh air is drawn out of the heat exchanger 43 in the depth direction. The depth direction extends transversely to the longitudinal direction between the front side 15 and the rear side 17.
The indoor air flows as circulating air 55 through the indoor air inlet opening 33 into the heat exchanger 43 of the circulating air module. The indoor air is turned upward in the vertical direction by the fins 63. The vertically flowing room air, which is diverted onto the room air radial fan 49 as the circulating air 55, is discharged from the heat exchanger 43 via the room air radial fan. The indoor air flowing in the vertical direction as circulating air 55, which is diverted past by the indoor air radial fan 49 by the fins 63, is diverted into the flow duct 51 in particular between them. The circulating air 55 is deflected by the flow channel 51 and is sucked by the indoor air radial fan 49, so that the circulating air 55 flows back into the heat exchanger 43 mainly vertically above the indoor air radial fan 49 and is then conducted away by the indoor air radial fan 49.
The above flow is illustrated in fig. 18 in conjunction with arrows. Arrows for air flow are also shown in fig. 17. When the supply air 55 flows through the heat exchanger 43 from below and the fresh air 55 flows through the heat exchanger 43 from above and meets in the region of the air inlet of the indoor air radial fan 49, the supply air 55 and the fresh air 53 mix during and after the flow through the indoor air radial fan 49, are sucked into the indoor air radial fan 49 in the depth direction and are discharged through these indoor air radial fans. Additionally, the circulating air 55 and the fresh air 53 have been mixed in the heat exchanger 43 before the room air radial fan 49, in particular when the circulating air 55 and the fresh air 53 have the same path, i.e. when the air 55 deflected downwards in the flow channel 51 has merged there with the fresh air 53 flowing downwards. The mixture of fresh air 53 and circulated air 55 exits the housing 13 through the indoor air exit opening 35 as supply air 57.
By circulating and tempering the indoor air while mixing in fresh air 53, the indoor climate is improved. The proportion of fresh air 53 mixed is small compared to the circulated indoor air, since a large proportion of the indoor air must be led through the heat exchanger 43 for cooling and heating. In contrast, the proportion of room air that needs to be replaced due to the respiration of building occupants and visitors is small and hardly influences the tempering process. A typical maximum of 20% for mixed fresh air.
The above-described embodiments can be modified in such a way that the fresh air fan 47 inside the device is not provided. Fresh air delivery will then take place through the opening in the housing and can be supported by an external fresh air fan or can be achieved by a fresh air channel delivering fresh air.
Fig. 19 shows a three-dimensional view of a further embodiment of the circulating air module system with a mounting frame 11 and a circulating air module 5.
The mounting frame 11 may be configured, for example, as a drywall frame and can be integrated into a building wall to provide space for a circulating air module 5 to be placed later. Alternatively, the mounting frame 11 is ceiling mountable. The mounting frame 11 has a rectangular parallelepiped basic shape, and its lower side is open so that the circulating air module 5 can be put into the mounting frame from below.
At one end side of the mounting frame there are fluid connections 67 which can be connected to heat exchanger connections 69 of the circulating air module 5. The fluid connection 67 is connected to lines for the inflow and outflow of a working medium, which can release cold or heat depending on the operating mode. The fluid connection 67 is advantageously provided with a valve in order to avoid leakage of the working medium when the circulating air module 5 is not in use. Advantageously, a power supply interface, a communication interface and a control interface are also provided in the mounting frame 11, which interfaces can be connected to the lines leading to the mounting frame and by means of which power supply, communication and control of the circulating air module 5 is achieved. On the upper side of the mounting frame 11 fastening means 73 are provided, which can be connected releasably to the fastening means 71 of the circulating air module 5.
The circulating air module 5 has a rectangular parallelepiped-shaped housing 13 in which a heat exchanger 43, an indoor air radial fan 49 and a fresh air fan 47 (not shown in fig. 19) are arranged. On the upper side of the housing 13 there is a fastening means 71 which can form a releasable connection with a fastening means 73 of the mounting frame 11.
The circulating air module 5 is mounted in such a way that it is pushed from below into the mounting frame 11 and then moved by a lateral movement in the direction of the fluid connection 67 and thus locked therewith. The fastening means 71 of the circulating air module 5 engage with corresponding fastening means 73 of the mounting frame 11 by a lateral movement, so that a form-locking connection is formed by the fastening means 71, 73 engaging with each other, which prevents the circulating air module 5 from falling out. During the lateral movement, the heat exchanger connection 69 and the fluid connection 67 form a connection, so that the working medium can flow through the heat exchanger 43. In one embodiment, the connection between the heat exchanger interface 69 and the fluid interface 67 is a quick coupler. The corresponding electrical connection means form an electrical connection enabling power supply, communication and control of the circulating air module 5. Alternatively or additionally, communication and control may be radio based.
Fig. 20 and 21, in combination with a top view of the mounting frame 11, illustrate the mounting of the circulating air module 5 which has been pushed into the mounting frame from below. The fastening means 71, 73 are oriented towards each other such that the catch-shaped fastening means 71 of the circulating air module 5 engages with the recesses of the fastening means 73 on the mounting frame 11. The heat exchanger interface 69 and the fluid interface 67 are oriented towards each other.
Fig. 21 shows the locked state after a lateral movement to engage the fastening means 71, 73 with one another in such a way that the catch-shaped fastening means 71 is pushed onto the bracing surface of the fastening means 73 in the mounting frame 11. The circulating air module 5 can no longer be detached from the mounting frame 11. The fluid connection 67 and the heat exchanger connection 69 are connected. The electrical connection is also established.
Fig. 22 shows a three-dimensional detail view of the underside in the end-side region. At the underside, a safety is provided, in which a tongue-shaped pivotable safety plate 75 is moved underneath the circulation air module 5 in order to prevent the circulation air module 5 from falling out accidentally, in particular when the circulation air module 5 is removed. By rotating the safety plate 75, the opening in the underside of the mounting frame 11 is released and the circulating air module 5 can be moved into or out of the mounting frame 11.
The connection between the mounting frame 11 and the circulating air module 5 is releasable. To remove the circulating air module 5 from the mounting frame 11, the connection between the heat exchanger interface 69 and the fluid interface 67 is released by embedding a tool into the mounting frame 11 from below. The safety plate 75 is turned away on the underside and the circulating air module 5 can be removed from the mounting frame 11 downwards after a lateral movement, in which the fastening means 71, 73 and the heat exchanger connection 69 and the fluid connection 67 are released from each other.
Fig. 23 shows a three-dimensional view of the mounting frame 11, in which the circulating air module 5 is arranged. On the underside of the mounting frame 11 there is a removable grille 37 which diverts air flow and makes the fan more inaccessible to prevent injury and damage.
In the present embodiment, the circulating air module 5 does not have a fresh air fan 47. Fresh air 53 is delivered through a fresh air inlet 39 in the housing 13 having a plurality of openings. In the present exemplary embodiment, for example, four indoor air radial fans 49 are provided, which are configured in a modular manner, so that they can be removed from the housing 13 as part of the fan modules 50 and, if necessary, replaced, without the entire circulating air module 5 having to be removed from the mounting frame 11 and opened. The fan module 50 comprises a module housing 77 enclosing the indoor air radial fan 49, which has an indoor air flow diverter 65 and a module grill 79 on the underside through which air flows.
Fig. 24 shows the interior of a circulating air module system with circulating air modules 5 arranged in a mounting frame 11. The front side of the housing 13 is not shown so that the heat exchanger 43 is visible. The heat exchanger has a heat exchanger interface 69 which is connected to a fluid interface 67 of the mounting frame 11. An electrical control 45 is arranged laterally of the heat exchanger 3.
Fig. 25 shows the interior of the circulated air module system. In this view, the heat exchanger 43 is also removed, so that the fan modules 50 each having a radial fan 49 for indoor air can be seen. The power supply line 91 for the indoor air radial fan 49 extends from the housing 13 and through the mounting frame 11. Wherein each fan module 50 can be removed individually. The fan module 50 includes a module housing 77 surrounding the indoor air radial fan 49 and a module grill 79 on the underside through which air flows out. Extending around the indoor air radial fan 49 is a radially convoluted inner wall and forming an indoor air flow diverter 65 that diverts air from the indoor air radial fan 49 out of the fan module 50 through a module grill 79.
A plane extends through the indoor air radial fans 49 such that the axially arranged air inlets of the indoor air radial fans are directed away from the same side of the plane and towards the heat exchanger 43. The indoor air radial fans each have an axis of rotation about which the fan wheel rotates. The rotation axis and thus the air inlet extend perpendicularly to said plane and parallel to each other.
Fig. 26 shows a side section through one of the indoor air radial fans 49 of the modular system. The indoor air inlet opening 33 is arranged below the heat exchanger 43, while the indoor air outlet opening 35 is arranged below the indoor air radial fan 49. The open areas above the indoor air inlet opening 33 and the indoor air outlet opening 35 are spatially separated. Above the heat exchanger 43, a flow channel 51 extends in the longitudinal direction between the heat exchanger 43 and the upper longitudinal side 19 of the housing 13, which flow channel leads fresh air 53 from the opening of the fresh air inlet 39 to the upper side of the heat exchanger 43. The openings are arranged in the side walls of the fresh air channel 51. The direct path from the flow channel 51 to the indoor air radial fan 49 is blocked and only through the heat exchanger 43.
Fig. 27 shows a three-dimensional view of an embodiment of the circulating air module 5 from obliquely above, which is particularly suitable for use in a ceiling region 83. It has a plurality of openings for the fresh air inlet 39 in the upper lateral region of the housing 13, through which openings the fresh air 53 can pass into the flow duct 51 in a simple manner and can be guided via the flow duct 51 to the heat exchanger 43. Additionally, the fresh air channel 85 can be coupled in a simple manner with a side of the mounting frame 11 having a corresponding fresh air approach.
Alternatively, the opening of the fresh air inlet 39 may also be arranged laterally of the heat exchanger 43, so that the fresh air 53 flows into the heat exchanger from the lateral direction.
Fig. 28 illustrates the case of an embodiment of the installation of a circulating air module system with circulating air modules 15 and a mounting frame 11 in a suspended ceiling 81.
The ceiling 81 has slits for supplying and discharging air to and from the circulating air module 5, which is constructed such that the lower side thereof faces the slits. In a ceiling region 83 delimited downwards by a suspended ceiling 81, a mounting frame 11 is provided for the circulating air module 5, the open underside of which frame is aligned with the slot. For example, as in the previous embodiments, the circulating air module 5 can be inserted into the mounting frame 11 through a slot in the ceiling 81. The mounting frame 11 extends from the suspended ceiling 81 into the ceiling region 83 and may be fastened to the ceiling of a building. The grille 37 is fastened to the mounting frame 11 in front of the underside gap of the ceiling 8.
In the mounting frame 11 there is a fresh air access 40 which is positioned in correspondence with the fresh air inlet 39 of the circulating air module 50. Fresh air is supplied via a ceiling region 83 into which fresh air 53 can flow from the outside. This may be supported by a separate fan in the ceiling area 83 or in a building wall.
In the present embodiment, a fresh air fan 47 is arranged outside the mounting frame 11, which draws fresh air 53 from the ceiling region 83 and blows it into the circulating air module 5.
The mixing of fresh air 51 into the circulating air 55 in the heat exchanger 43 is carried out as already described in detail in connection with fig. 18 and the embodiment with the fresh air fan 47 inside the apparatus.
In one embodiment, the fresh air approach 40 can advantageously be coupled with a fresh air channel 85 in the ceiling region 83, through which fresh air 53 is guided to the circulating air module 5, to be delivered with fresh air 53. The circulated air 55 from the room and the supply air 57 delivered into the room are illustrated by arrows.
Fig. 29 schematically illustrates a ventilation system in the ceiling with a plurality of circulating air modules 5 which are supplied with fresh air 53 via fresh air channels 85 in a ceiling region 83. The fresh air channel 85 may be constructed in a tubular manner or may be constructed as a flat channel with a rectangular cross section. The branches lead to the circulation air module 5 of the ventilation system. Fresh air 53 is sucked in from the outside through the filter via the fan and fresh air 85 is fed to the circulating air module 5 through the mounting frame 11 of the circulating air module by the fan. The downstream muffler 93 reduces noise load.
The embodiment of the circulating air module 5 without the fresh air fan 47 in the housing 13 is preferably used as a ceiling-mountable circulating air module 5. Fresh air delivery may be via fresh air channel 85.
The features described above and in the claims can be realized both individually and in different combinations from the features shown in the drawings. The invention is not limited to the described embodiments but can be modified in many ways within the scope of the knowledge of a person skilled in the art.
List of reference numerals
1. Building wall
2. Indoor space
3. Window
5. Circulating air module
7. Rolling shutter box
9. Wall facing
11. Mounting frame
13. Shell body
15. Front side
17. Rear side
19. Upper longitudinal side
21. Lower longitudinal side
23. 25 Lateral sides
27. Tongue piece
29. Support rod
31. Lock catch
33. Indoor air inlet opening
35. Indoor air outlet opening
37. Grille
39. Fresh air inlet
40. Fresh air access
41. Filter device
43. Heat exchanger
45. Control unit
47. Fresh air fan
49. Indoor air radial fan
50. Fan module
51. Flow channel
53. Fresh air
55. Circulating air
57. Air supply
59. Special-shaped piece
61. Fresh air flow diverter
63. Fin type
65. Indoor air flow diverter
67. Fluid interface
69. Heat exchanger interface
71. 73 Fastening device
75. Safety plate
77. Module shell
79. Module grille
81. Suspended ceiling
83. Ceiling area
85. Fresh air channel
87. Fan with fan body
89. Filter device
91. Power supply circuit
93. Silencer (muffler)
101. Exhaust air channel
102. Air exhaust opening
103. Heat recovery device
105. Fluid circuit
107. Air conditioning equipment
109. Air exhaust
111. Heat pump
113. Fan with fan body
115. Outdoor air
117. Exhaust gas
119. Hot water
121. Drawing station
123. Waste water/outdoor air

Claims (15)

1. A system for air conditioning an indoor space (2) of a building, the system having: an exhaust air duct (101) through which exhaust air (109) can be guided out of at least one of the indoor spaces (2); and a heat recovery device (103) configured to obtain thermal energy from the exhaust air (109), wherein one or more indoor spaces (2) are provided with a circulating air module (5) with fresh air entrainment, which is connected to a fluid circuit (105) of an air conditioning device (107), wherein the circulating air module (5) comprises:
-a housing (13) having a fresh air inlet (39) configured to enable fresh air (53) to flow into the housing (13), and having an indoor air inlet opening (33) and an indoor air outlet opening (35),
A heat exchanger (43) arranged in the housing (13),
An indoor air fan (49) arranged in the housing (13) with which indoor air flowing in as circulating air (55) through the indoor air inlet opening (33) can be conveyed through the heat exchanger (43),
Wherein the circulating air module (5) is configured such that fresh air (53) is fed to circulating air (55) in the housing (13), and the circulating air (55) flows out of the indoor air outlet opening (35) together with the mixed fresh air (53) as supply air (57).
2. The system according to claim 1,
Wherein the heat recovery device (103) is configured to provide warmed fresh air (53) to the circulating air module (5).
3. The system according to claim 1 or 2,
Wherein the heat recovery device (103) is configured to warm water and provide it as hot water.
4. The system according to any of the preceding claims,
Wherein the heat recovery device (103) includes an air conditioning device (107) so that the recovered heat is used for air conditioning the indoor space (2).
5. The system according to any of the preceding claims,
Wherein the heat recovery device (103) is configured as a heat pump (111).
6. The system according to any of the preceding claims,
Wherein the heat recovery device (103) is configured to extract heat energy from the waste water and/or the outdoor air.
7. The system according to any of the preceding claims,
Wherein the circulating air module (5) is configured such that fresh air (53) can be sucked through the heat exchanger (43) and mixed with circulating air (55) in the heat exchanger (43) and/or the indoor air fan (49).
8. The system according to claim 7,
Wherein the indoor air fan is an indoor air radial fan (49) having an axially arranged air inlet which is directed towards the heat exchanger (43), and the indoor air radial fan (49) is one of a plurality of indoor air radial fans (49) which are arranged side by side, in particular offset from each other in the longitudinal direction, laterally between the front side (15) and the rear side (17) of the housing (13), such that the axially arranged air inlet of the indoor air radial fan (49) is directed towards the heat exchanger (43).
9. The system according to claim 8,
Wherein a plane extends through the indoor air radial fan (49) such that axially arranged air inlets of the indoor air radial fan are directed away from the same side of the plane,
And wherein the indoor air radial fans (49) each have an axis of rotation, and wherein the axes of rotation extend perpendicularly or substantially perpendicularly to the plane, and/or the axes of rotation extend parallel or substantially parallel to each other.
10. The system according to any of the preceding claims,
Wherein the circulating air module (5) comprises a flow channel (51) configured to direct fresh air (53) to the heat exchanger (43).
11. The system according to claim 10,
Wherein the flow channel (51) extends between the heat exchanger (43) and one longitudinal side (19, 21) of the housing (13), through which fresh air (53) can be sucked by means of one or more indoor air radial fans (49).
12. The system according to any of the preceding claims,
Wherein the circulating air module (5) comprises a fresh air fan (47) arranged in the housing (13) for delivering fresh air (53), which fresh air fan is arranged laterally beside one or more indoor air radial fans (49) between the front side (15) and the rear side (17) of the housing (13), or wherein a fresh air fan (47) for delivering fresh air (53) through the fresh air inlet (39) is arranged outside the housing (13).
13. The system according to any of the preceding claims,
Wherein the indoor air radial fan (49) in the circulating air module (5) is modularly constructed.
14. The system according to any of the preceding claims, having a mounting frame (11) into which the circulating air module (5) can be placed and which can be fitted into a ceiling area (83), or can be fastened to the ceiling, or can be placed into a building wall (1) of an indoor space, or can be fastened to a building wall (1) of an indoor space.
15. The system according to claim 14, wherein the fresh air inlet (39) of the mounting frame (11) or the circulating air module (5) is coupleable with a fresh air channel (85) via which fresh air (53) can be led to the circulating air module (5).
CN202280075704.8A 2021-11-19 2022-11-18 System for air conditioning indoor space of building Pending CN118234997A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102021130300.1 2021-11-19
DE102022109804.4 2022-04-22
DE102022109804 2022-04-22
PCT/EP2022/082493 WO2023089138A1 (en) 2021-11-19 2022-11-18 System for climate-control of interior spaces of a building

Publications (1)

Publication Number Publication Date
CN118234997A true CN118234997A (en) 2024-06-21

Family

ID=91498300

Family Applications (3)

Application Number Title Priority Date Filing Date
CN202280075944.8A Pending CN118234996A (en) 2021-11-19 2022-11-18 Circulating air module and circulating air module system
CN202280075911.3A Pending CN118234998A (en) 2021-11-19 2022-11-18 Circulating air module and circulating air module system
CN202280075704.8A Pending CN118234997A (en) 2021-11-19 2022-11-18 System for air conditioning indoor space of building

Family Applications Before (2)

Application Number Title Priority Date Filing Date
CN202280075944.8A Pending CN118234996A (en) 2021-11-19 2022-11-18 Circulating air module and circulating air module system
CN202280075911.3A Pending CN118234998A (en) 2021-11-19 2022-11-18 Circulating air module and circulating air module system

Country Status (1)

Country Link
CN (3) CN118234996A (en)

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Publication number Publication date
CN118234996A (en) 2024-06-21
CN118234998A (en) 2024-06-21

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