EP3611440A1 - Heat pump and blower for a heat pump - Google Patents

Abstract

The invention relates to a heat pump (200), in particular an air heat pump, for heating and / or cooling living spaces and / or fluids, in particular drinking water, comprising a blower (100) for conveying an air flow and a heat pump housing (202), in which the fan (100) is arranged or can be arranged. A heat pump (200), in particular an air source heat pump, is proposed, in which the blower (100) comprises a blower housing (102) designed in the manner of a cassette, the blower housing (102) having at least a first guide region (106), the first guide region (106 ) is designed to guide the fan (100) when the fan (100) is pushed into the heat pump housing (202) and / or when it is pulled out of the heat pump housing (202).

Description

State of the art

A heat pump for heating and / or cooling living spaces and / or fluids, in particular drinking water, is already known. As a rule, such a heat pump comprises a fan for conveying an air flow. The fan is arranged in a heat pump housing.

Disclosure of the invention

The invention relates to a heat pump, in particular an air heat pump, for heating and / or cooling living spaces and / or fluids, in particular drinking water, comprising a blower for conveying an air flow and a heat pump housing in which the blower can be arranged or arranged.

A heat pump, in particular an air heat pump, is proposed in which the blower comprises a blower housing which is designed in the manner of a cassette, the blower housing having at least a first guide region, the first guide region being designed, the blower when the blower is pushed into the heat pump housing and / or pulling it out of the heat pump housing, in particular clearly.

A heat pump is understood to be a system which is used to heat and / or cool living spaces and to heat and / or cool fluids. Beneath living spaces are spaces for people to stay and / or animals understood, this includes all the usual rooms in an apartment, apartment building, office building, work building. Fluids are understood to be fluids used in and / or in connection with the living spaces, including drinking water, heating water, process water, air, for example from an air conditioner. The heat pump can absorb heat from a low-temperature heat reservoir and deliver it to a higher-temperature heat reservoir. Using a refrigerant circuit, heat is absorbed from the low-temperature heat reservoir by means of a heat exchanger acting as a refrigerant evaporator, brought to a higher temperature level by means of a compressor, and released to the higher-temperature heat reservoir by means of a heat exchanger acting as a refrigerant condenser. In the case of the air heat pump, an air stream, for example an outside air stream taken from an outside environment, serves as a low-temperature heat reservoir for heating residential rooms and / or fluids, the heat of which is extracted from the air stream, brought to a higher temperature level by the heat pump and transferred to a living space or a fluid becomes. As an alternative or in addition to the outside air flow, air flows of other origins, for example an exhaust air flow discharged from the living room, can also be used. On the other hand, in the air heat pump for cooling living spaces and / or fluids, a living space and / or a fluid can serve as a low-temperature heat reservoir, the heat of which is extracted from the living space and / or the fluid, brought to a higher temperature level and connected to an air flow, in particular an outside air flow , is transmitted. Alternatively, the heat brought to a higher temperature level during cooling can also be used, for example to heat another fluid. An air heat exchanger is used to absorb heat from the air flow or to transfer heat to the air flow. The blower is generally used to convey, that is, suck in and blow out, a heat or cold transporting air stream. The blower can be designed, for example, as a radial blower or an axial blower. In air heat pumps, the fan serves to convey the air flow, in particular the outside air flow, through the air heat exchanger, which can be designed as an evaporator and / or condenser. The blower includes a blower motor, a blower impeller driven by the blower motor, and a blower housing in which the blower impeller is arranged. The heat pump comprises a heat pump housing, in which the fan is arranged. Furthermore, further components of the heat pump, such as the air heat exchanger, can be arranged in the heat pump housing. The blower housing is designed in the manner of a cassette, which makes the blower particularly easy to install and service-friendly. In its interior, the blower housing fulfills the function of receiving the blower impeller and guiding the air flow. The interior of the blower housing can also accommodate the blower motor. With its outer surface that closes off the blower housing in relation to an external environment, the blower housing fulfills the function of a casing that is designed to securely envelop the inside. Due to the cassette-like design, the blower housing with a clear, essentially box-like geometry is particularly well suited to being arranged in the heat pump housing in a manner that is suitable for operation, in particular in a firm, tight, sound-absorbing manner. Thanks to the box-like geometry, the fan housing can be easily pushed into and pulled out of the heat pump housing without jamming and jamming. In particular, all relevant blower components can advantageously be arranged in the blower housing, in particular within the enveloping outer surface of the blower housing. This prevents bumping, getting caught, jamming, jamming when pushing in and pulling out. As a result, the assembly and disassembly of the blower is particularly good and easy to carry out, both in production and in the event of service. The blower housing has a guide area. A guide area is understood here to be a device which is designed to guide the fan, in particular unambiguously, when the fan is pushed into the heat pump housing and / or when it is pulled out of the heat pump housing, so that a desired, in particular unambiguous, position and Orientation of the fan in the heat pump housing along the displacement path of the fan in the heat pump housing, in particular also in an end position (operating position), is guaranteed and jamming and jamming is excluded. Lead clearly and unambiguous position refer to the fact that the blower is freely displaceable along a displacement path, in particular in other directions perpendicular to the displacement path, but not free, but bound, in particular determined by the guide area. The displacement path is the path of the fan in the heat pump housing, starting with the first insertion of the fan housing into the heat pump housing and ending with an end position, for example the operating position of the fan for operation in the heat pump. For example, the guide area can be designed to guide the fan housing on a linear displacement path, such a displacement path can be at least partially rectilinear. Alternatively or additionally, it can also run at least partially along a curved line. The guiding of the blower can include receiving and / or holding and / or steering and / or support so that the blower does not deviate from its displacement path. In particular, the guide area is designed to be continuous without having an obstacle opposing a displacement. The guide area can be formed by two or more guide partial areas.

An advantageous embodiment of the heat pump is characterized in that the heat pump housing has at least one second guide area, the second guide area being designed to correspond to the first guide area of the fan housing and the fan when the fan is pushed into the heat pump housing and when it is pulled out of the Lead heat pump housing. In particular, the second guide area of the heat pump housing is designed to match the first guide area of the fan housing to the extent that the two guide areas are matched to one another or function. In particular, the two guide areas are designed to be geometrically coordinated with one another. For example, the two guide areas can slide or slide on one another and guide the blower in a clear position and orientation in the heat pump housing along the displacement path without tilting and jamming. The heat pump housing can have, for example, a receiving shaft suitable for guiding, in particular receiving and / or holding and / or steering, the fan.

An advantageous exemplary embodiment of the heat pump is characterized in that the fan housing and / or the heat pump housing have at least one coding area for mechanically coding their relative arrangement. For this purpose, the blower housing and the heat pump housing each have coordinated geometric features which only permit an orientation of the blower in the heat pump housing that is clearly defined by the coding. This ensures that the fan housing can only be arranged in a desired orientation in the heat pump housing. Incorrect insertion of the blower housing is impossible. The mechanical coding can take place, for example, by the choice of an outer contour, in particular an outer cross section, of the fan housing and a corresponding inner contour, in particular an inner cross section, of the heat pump housing, in particular of the receiving shaft. Examples are deviating dimensions of the blower housing outer sides and / or cross sections deviating from a simple shape such as a rectangle or square.

Another advantageous exemplary embodiment of the heat pump is characterized in that the first guide area and / or the second guide area are formed essentially along a displacement direction of the fan. The direction of displacement is the direction of insertion and / or extraction of the fan in the heat pump housing on the displacement path. This ensures that the blower is safely guided along the entire displacement path. The guide area can consist of one piece. Alternatively, the guide area can be formed by two or more partial guide areas, which are arranged, for example in a punctiform or partial area, along the direction of displacement and in their entirety form a support structure for the fan in the heat pump housing.

Another advantageous exemplary embodiment of the heat pump is characterized in that the first guide area and / or the second guide area are designed as a surface and / or edge and / or rail. For example, this can be at least one guide surface, for example a guide surface on an underside of the fan for placing the fan in the heat pump housing, in particular the underside can be designed as a guide surface. This one guide surface can be supplemented by a second guide surface, for example on an upper side of the fan - the fan would then run between an upper and a lower guide surface. Further guide surfaces can be arranged, for example, on the right and / or left and / or on a rear side of the fan - the fan would then run like a drawer in a drawer compartment. For example, the guide area could also be designed as at least one guide edge along the displacement path, in particular as a 90-degree angle piece, on which two surfaces of the fan housing or of the heat pump housing that are perpendicular to one another are supported. In particular, the leading edge can be an outer edge of the cassette-shaped fan housing. Alternatively or additionally, the leading edge can be an inner edge of the heat pump housing, in particular of the receiving shaft formed therein. This one leading edge can be supplemented by a second leading edge, in particular a second 90-degree angle piece, which supports an adjacent or opposite edge of the blower housing or of the heat pump housing. Further leading edges can be arranged on further edges of the housing. For example, the guide area could also be designed as at least one guide rail along the displacement path, in particular as a guide rail with a tongue-and-groove cross-section, in which, for example, a longitudinal groove in the fan housing can be displaced on a suitable longitudinal spring in the heat pump housing. Alternatively, the guide rail can also have a dovetail cross section, with the advantage that the blower is securely held and guided in two spatial directions, while the third spatial direction is the displacement direction of the blower. Alternatively or in addition, two or more guide rails can also be present.

Another advantageous exemplary embodiment of the heat pump is characterized in that the at least one first guide area and / or the at least one second guide area are configured to be essentially parallel to one another. Essentially parallel means up on manufacturing tolerances in parallel. The parallelism ensures that the blower can move freely along the displacement path without jamming, because the same play exists between the first guide area and the second guide area along the entire displacement path. For example, these can be two guide surfaces of the fan housing, which are parallel to two guide surfaces of the heat pump housing. Thus, there is no obstacle on the part of the guide areas for a displacement along the displacement path up to an operating position of the fan in the heat pump housing. In the operating position, the fan is suitably positioned for heat pump operation, in particular in relation to the heat pump housing and / or to other heat pump components such as the air heat exchanger.

A further advantageous exemplary embodiment of the heat pump is characterized in that the at least one first guide area and / or the at least one second guide area are designed in a wedge-shaped arrangement, in particular in order to include a wedge angle in the range between one and five degrees of angle. The wedge angle ensures that the blower can initially move freely along the displacement path when it is pushed in. However, with increasing insertion depth in the heat pump housing, the play between the first guide area and the second guide area becomes smaller due to the wedge angle. When the blower housing finally reaches an operating position on its displacement path, it will be arranged in a slightly constrained, fixed manner in the heat pump housing and will no longer have any play. The wedge angle can be constant throughout the displacement. Alternatively, the wedge angle along the displacement path can also increase with increasing insertion depth, so that pushing in over large areas of the displacement path is easy and the fixing only takes effect in the last area, for example on the last centimeters of the displacement path before the operating position. For example, these can be two guide areas (guide surface, guide edge) of the fan housing arranged in a wedge shape in a heat pump housing provided with guide areas arranged parallel to one another. Alternatively, the guide areas of the blower housing can be parallel, the guide areas of the Heat pump housing may be arranged in a wedge shape. In yet another embodiment, both the guide areas of the fan housing and the guide areas of the heat pump housing can be arranged in a wedge shape. In the case of the guide rail, this feature can be expressed in such a way that, for example, the guide groove becomes narrower in the longitudinal direction and / or the guide spring becomes wider in the longitudinal direction, so that there is less play between the tongue and groove as the blower insertion depth increases, which fixes the fan in the heat pump housing becomes.

Another advantageous embodiment of the heat pump is characterized in that the heat pump housing has at least one depth stop for the fan, the depth stop being designed to give the fan a defined operating position in the heat pump housing when the fan is pushed in. The pairing of a first stop surface on the heat pump housing with a second stop surface on the blower housing can advantageously serve as a depth stop. The contacting stop surfaces prevent the fan from moving further in the heat pump housing. The position of the fan at the depth stop advantageously corresponds to the operating position of the fan in the heat pump housing.

Another advantageous exemplary embodiment of the heat pump is characterized in that the heat pump housing comprises a detachable housing cover, the housing cover being designed to fix the blower in the operating position in a state connected to the heat pump housing. The housing cover can limit the displacement path of the fan with regard to the extraction and / or removal of the fan from the heat pump housing, in that the housing cover is in particular perpendicular to the fan arranged in the operating position, in particular closes the receiving shaft for the fan. The fan can only be pulled out and / or removed from the heat pump housing when the housing cover is open or removed. This ensures that when the housing cover is closed and the interior of the heat pump housing is not visible, the fan is always arranged in the operating position, in particular in connection with the Depth stop and / or the wedge-shaped guide areas.

Another advantageous exemplary embodiment of the heat pump is characterized in that the fan housing comprises a foam, in particular is essentially formed from a foam. With this material, a blower housing can be easily manufactured, which inside has the function of accommodating the blower impeller and guiding the air flow, can optionally also accommodate the blower motor, and which, with its outer surface that closes off the blower housing, fulfills the function of a shell that is designed to safely encase the inside. The cassette-like design of the blower housing can be implemented particularly well with the foam. Examples of a suitable foam are plastic foams such as foamed thermoplastics and thermosets, for example expanded polypropylene (EPP), expanded polystyrene (EPS), extruded polystyrene (XPS), polyurethane foam (PUR).

Another advantageous exemplary embodiment of the heat pump is characterized in that the fan housing comprises a first housing half-shell and a second housing half-shell, and in that the first housing half-shell and the second housing half-shell form a, in particular helical, flow channel for the air flow between them. The blower housing can be separated along a parting plane into the two housing half-shells, so that access to the flow channel, the blower impeller and, if appropriate, to the blower motor, which are arranged in the interior of the blower housing, is easily possible. The flow channel is designed to allow the air flow to enter the blower housing through an inflow opening, to bring about the desired pressure increase under the influence of the blower impeller, and to blow out the air flow through an outflow opening. The housing half-shells can be connected to one another in the parting plane, so that the flow channel is closed circumferentially. The half-shells can be connected, for example, by means of a winding made of metal or plastic tape or by means of clips. Alternatively, they can be connected by means of a tongue and groove connection in the parting plane.

Another advantageous embodiment of the heat pump is characterized in that a circumferential or flat seal is arranged between the first housing half-shell and the second housing half-shell. The housing half-shells can be connected to one another in the parting plane and can be sealed against an external environment of the blower, so that air loss through gaps in the parting plane can be avoided during operation of the blower. Sealing can take place by means of the tongue and groove connection itself, for example by means of a tongue and groove connection under pressure and / or locking, or due to surface pressure in the parting plane.

Another advantageous exemplary embodiment of the heat pump is characterized in that the blower has a connecting device for connecting to the blower housing, in particular to the first housing half-shell, on the one hand, and to a blower impeller and / or a blower motor on the other hand. In this case, a connection area of the connecting device for connecting to the blower housing, in particular to the first housing half-shell, is formed to form a flat and torsionally rigid connection. The connecting device is used to mount and fix the blower impeller and optionally the blower motor in the blower housing. So that the rotatable fan impeller does not touch this housing despite the small gap dimensions in the flow channel relative to the interior of the fan housing, the connection is designed to be torsionally rigid. This is achieved by a connection area of the connecting device with respect to the blower housing, which connection area is formed to form a flat connection with the blower housing. The flat connection is supported flat on the blower housing, in particular on an inner surface of the blower housing, in particular on the first housing half-shell. As a result, tilting moments resulting from the operation of the blower impeller or the blower motor can be absorbed by the structure of the blower housing. Because of the effective stiffening by means of the connecting device, softer and, in particular, more sound-absorbing foams can then be used for the blower housing.

A further advantageous exemplary embodiment of the heat pump is characterized in that at least one cable duct is provided on the blower housing, in particular on the first housing half-shell, the cable duct being designed as a recess arranged in an outer surface of the blower housing, in particular the first housing half-shell, the cable duct is designed to receive electrical lines and / or signal lines of a blower motor and to be connected to a power supply and / or a signal transmitter to a front side and / or to a rear side of the blower housing. The cables mentioned are routed safely to their connection points in the cable duct. These connection points can be arranged and designed such that the connection of an electricity-conducting and / or signal-conducting contact with the movement of the fan being pushed into the heat pump housing is created and is interrupted by the pulling out. The design of the cable duct as a recess in the blower housing, which is particularly accessible from the outside, reliably ensures the function of the outer surface, which closes off from an external environment, and which is designed to securely envelop the interior. The cassette-like design of the blower housing is therefore not affected by the cable duct.

A further advantageous exemplary embodiment of the heat pump is characterized in that the electrical lines and / or signal lines of the fan motor led to the front and / or rear of the fan housing open into at least one electrical connector. The plug connector can be designed such that it closes when the fan is pushed in, conducting electricity and signals, and opens when it is pulled out. Alternatively, the connector can be designed for manual connection and disconnection, for this purpose an arrangement on the front of the blower is suitable. Alternatively, the lines can open into a sliding contact device that closes solely due to the pushing in or opens due to the pulling out.

A further advantageous exemplary embodiment of the heat pump is characterized in that an inflow opening for inflowing the air flow into the fan housing, in particular on the second housing half-shell the blower and, in particular at the parting plane of the two housing half-shells, an outflow opening for the outflow of the air flow from the blower are formed. The inflow opening and / or the outflow opening have a circumferential, lip-shaped or bead-like protruding sealing area for sealing the fan housing against an inflow connection and / or outflow connection on the heat pump side. By protruding the sealing area, this seals in the operating position of the fan in the pushed-in state in the heat pump housing by pressing against an appropriately designed inflow connection or outflow connection on the heat pump side. If the fan is not in the operating position but in an intermediate state before the operating position of the fan, there is no pressing and no sealing.

A blower is proposed, in particular for use in a heat pump according to one of the preceding exemplary embodiments, characterized by a cassette-shaped blower housing with at least one guide area, in particular for guiding when the blower is pushed into a housing of the heat pump and / or when it is pulled out the housing of the heat pump. Such a blower has the advantages of being particularly easy to assemble and service-friendly. Such a blower can be easily pushed into and pulled out of a receiving shaft of a machine or a frame. In particular, this can be done without tools, because due to the outer contour of the blower housing, the blower is fixed in the receiving shaft and a seal with respect to neighboring machine components is obtained solely by pushing it in.

Figur 1

eine Wärmepumpe mit einem kassettenartig ausgebildeten Gebläsegehäuse,

Figur 2

eine Wärmepumpe mit einem Gebläse in zwei Positionen beim Hineinschieben des Gebläses in das Wärmepumpengehäuse,

Figur 3

zwei Ansichten einer Wärmepumpe mit Aufnahmeschacht für ein Gebläse,

Figur 4

eine mit einem Gehäusedeckel verschlossene Wärmepumpe,

Figur 5

ein kassettenartig ausgebildetes Gebläsegehäuse mit einer ersten Gehäusehalbschale und einer zweiten Gehäusehalbschale,

Figur 6

ein Gebläse in Explosionsdarstellung,

Figur 7

ein kassettenartig ausgebildetes Gebläsegehäuse mit zwei Kabelkanälen und elektrischen Steckverbindern.

The drawing shows exemplary embodiments of the invention in seven figures. It shows:

Figure 1

a heat pump with a cassette-shaped fan housing,

Figure 2

a heat pump with a blower in two positions when the blower is pushed into the heat pump housing,

Figure 3

two views of a heat pump with a receiving shaft for a fan,

Figure 4

a heat pump sealed with a housing cover,

Figure 5

a cassette-shaped fan housing with a first housing half-shell and a second housing half-shell,

Figure 6

an exploded fan,

Figure 7

a cassette-like fan housing with two cable ducts and electrical connectors.

Figure 1 shows a heat pump 200 for heating and / or cooling living spaces and / or fluids with a blower 100 for conveying an air flow and a heat pump housing 202 in which the blower 100 is arranged or can be arranged. The heat pump housing 202 is designed to receive the blower 100 in its interior, for this purpose a receiving shaft 204 is set up in the heat pump housing 202. In Figure 1 The blower 100 is spatially shown in a position outside the heat pump housing 202 or outside the receiving shaft 204 before the first introduction of the blower 100 into the heat pump housing 202. The fan 100 includes a cassette-like fan housing 102. Due to the cassette-like design, the fan housing 102 with a clear, essentially box-like geometry can be easily pushed into and pulled out of the heat pump housing 202 without jamming and jamming. In particular, all relevant fan components can advantageously be arranged in the fan housing 102. This prevents bumping, getting caught, jamming, jamming when pushing in and pulling out. This makes it particularly easy and easy to install and remove the fan 100 both in production and in the event of service. The blower housing 102 has six first guide areas 106. These first guide areas 106 are formed on four edges of the fan 100 as guide edges 108 (one of which is covered) and on two sides of the fan 100 as guide surfaces 109 (one of which is hidden). A illustrated guide edge 108 is formed by three guide sections 110, 111, 112. The first guide areas 106 are designed to move the blower 100 when the blower is pushed in 100 in the heat pump housing 202 and / or when pulled out of the heat pump housing 202 in a direction of displacement (see large arrow) such that it is received and / or held in the heat pump housing 202 along its displacement path, in particular also in an end position (operating position) and / or is steered and / or supported. The fact that the first guide areas 106 are arranged on opposite sections of the blower housing 102 means that the blower 100 is clearly guided, which is noticeable in that the blower 100 is freely displaceable along its displacement path, in other directions, in particular perpendicular to the displacement direction , but not free, but bound, in particular defined by the first guide areas 106. The heat pump housing 202 or the receiving shaft 204 have second guide regions 206 which correspond to the first guide regions 106 and are designed to guide the fan 100 when the fan 100 is pushed into the heat pump housing 202 and when it is pulled out of the heat pump housing 202. The illustrated guide edge 108 of the fan housing 102, which forms a first guide region 106, is formed by three partial guide regions 110, 111, 112, all of which come to lie in the corresponding guide edge 208 of the heat pump housing 202. The fact that the second guide regions 206 are arranged on opposite sections of the heat pump housing 202 means that the blower 100 is clearly guided. The guiding of the blower housing 102 in the heat pump housing 202, in particular in the receiving shaft 204, also prevents the blower 100 from oscillating and / or vibrating, for example during operation with the blower motor 114 and the blower impeller 116 rotating. The first guide regions 106 and the second guide regions 206 are essentially trained parallel to each other. The parallelism ensures that the blower 100 can move freely along the displacement path without jamming, because there is the same play along the entire displacement path between the first guide regions 106 and second guide regions 206. Alternatively, the first guide areas 106 to one another and / or the second guide areas 206 to one another could be formed into a wedge-shaped arrangement, so that the play between the first and second guide areas 106, 206 increases with increasing Insertion depth becomes smaller and the blower 100 is finally slightly constrained in an end position and fixedly arranged in the heat pump housing 202 or in the receiving shaft 204. The blower housing 102 has a first coding region 118 for mechanically coding its relative arrangement with respect to the heat pump housing 202 or the receiving shaft 204. The first coding region 118 is formed by widening the blower housing cross section compared to the adjacent regions of the blower housing 102. The heat pump housing 202 or the receiving shaft 204 have a second coding area 218 corresponding to the first coding area 118 (see Figure 3 ). In combination, the first coding area 118 and second coding area 218 have the effect that the fan housing 102 can only be arranged in the heat pump housing 202 in a desired orientation.

Figure 2 shows in two views a heat pump 200 when the fan 100 is pushed into the heat pump housing 202 or into the receiving shaft 204. In Figure 2a (left half of the figure), the fan 100 is shown in a position (intermediate position) half inserted into the heat pump housing 202 or into the receiving shaft 204. In Figure 2b (right half of the figure), the fan 100 is shown in a position fully inserted into the heat pump housing 202 or in the receiving shaft 204 or in an end or operating position. A depth stop (not shown) limits the displacement of the fan 100 inside the heat pump housing 202 or the receiving shaft 204 and stops the fan 100 when it is pushed in in the end position defined in this way. The blower 100 is thus given an operating position in which the blower 100 is aligned with air connections on the heat pump side and optionally electrical or signal connections in an arrangement suitable for operation. Figure 2a also shows an inflow opening 120 formed on the blower housing 102 for the inflow of air into the blower 100 and an outflow opening 122 for outflow of air from the blower 100. The inflow opening 120 and the outflow opening 122 each have a circumferential, lip-shaped or bead-like protruding sealing region 124 for sealing of the fan housing 102 with respect to an inflow connection on the heat pump side (not shown) and / or outflow connection (not shown). The sealing regions 124 seal in an operating position of the fan 100 in the pushed-in state in the heat pump housing 202 by pressing. In the positions spatially in front of the operating position, the sealing areas 124 are exposed and unpressed and not sealing. In Figure 2 Also shown are the inlet cross-section 220 for an entry of the air flow into the heat pump housing 202 and the outlet cross-section 222 for an outlet of the air flow. An air flow enters the heat pump housing through the inlet cross-section 220, flows through the air heat exchanger 224, flows into the blower 100 through the inflow connection and inflow opening 120, is accelerated in the blower 100, flows out of the blower 100 through the outflow opening 122, and leaves the heat pump housing through the Outlet cross section 222.

Figure 3 shows the receiving shaft 204 in the heat pump housing 202 for the blower 100 in two mutually rotated views. In particular, six second guide areas 206 can be seen in the receiving shaft 204. These second guide areas 206 are formed on four edges of the receiving shaft 204 as guide edges 208 and on two sides of the receiving shaft 204 as guide surfaces 209. The second guide areas 206 of the receiving shaft 204 are designed to cooperate with the first guide areas 106 of the blower 100 and to guide the blower 100 when it is pushed into the heat pump housing 202 and / or when it is pulled out of the heat pump housing 202 such that it moves along its displacement path , in particular also in an end position (operating position), is received and / or held and / or steered and / or supported in the heat pump housing 202 or in the receiving shaft 204. The fact that the second guide areas 206 are arranged on mutually opposite sections of the receiving shaft 204 means that the blower 100 is clearly guided, which is noticeable in that the blower 100 is freely displaceable along its displacement path, in other directions, in particular perpendicular to the displacement direction , but not free, but bound, in particular defined by the first and second guide areas 106, 206. The air heat exchanger 224 of the heat pump 200 can also be seen; the blower 100 sucks in an air flow through the air heat exchanger 224 and through the inflow opening 120 of the blower 100 and blows out the air flow through the outflow opening 122 again.

Figure 4 shows a heat pump housing 202 closed with a housing cover 226. The housing cover 226 also serves, among other things, to fix the blower 100 in its operating position on its displacement path in the heat pump housing 202.

Figure 5 shows a cassette-like blower housing 102. The blower housing 102 comprises a first housing half-shell 126 and a second housing half-shell 128. The first housing half-shell 126 and the second housing half-shell 128 are shown here as separate from one another. The blower housing 102, in particular the housing half-shells 126, 128, is advantageously made of a foam or of a foamed plastic. This has the advantage that vibrations resulting from the operation of the heat pump 200, in particular the blower 100, in particular vibrations which can be felt tactile and / or acoustically audible vibrations, are effectively insulated. In the case of larger quantities, a blower housing 102 can also be manufactured inexpensively. The two housing half-shells 126, 128 form a helical flow channel 130 for the air flow between them with an inflow opening 120 in the second housing half-shell 128 for the inflow of air into the blower 100 and an outflow opening 122 for outflow of air from the blower 100, the Outflow opening 122 forms in the parting plane between the two housing half-shells 126, 128. The circumferential, lip-shaped or bead-like protruding sealing areas 124 around the inflow opening 120 and the outflow opening 122 for sealing the blower housing 102 from an inflow connection on the heat pump side (not shown) and / or outflow connection (not shown) can also be seen. The two housing half-shells 126, 128 hold the blower impeller 116 and the blower motor 114 between them. The impeller 116 and the blower motor 114 are connected to the first housing half-shell 126. A connection device 132 is used for this purpose, which on the one hand with the first fan half-shell 126 and on the other hand with the Blower impeller 116 and / or the blower motor 114 is connected. For operation, the two housing half-shells 126, 128 are placed on top of one another and tightly connected to one another, for this purpose a circumferential seal 134, for example a tongue and groove seal, in particular a latching tongue and groove seal, is used. The first coding region 118 of the fan housing 102 can also be seen for mechanically coding the relative arrangement of the fan housing 102 with respect to the heat pump housing 202 or the receiving shaft 204. The illustrated guide edge 108 of the fan housing 102, which forms a first guide region 106, is separated by three guide sub-regions 110, 111, 112 are formed, all of which come to rest in a corresponding guide edge 208 of the heat pump housing 202. Further guide areas 106 are designed as surfaces 109 or edges 108. An alternative guide region 106 (not shown) could be formed by a rail, which would be arranged along the displacement path, here parallel to the parting plane, for example on the underside or the top of the blower housing 102. The guide areas 106 are arranged parallel to one another. Alternatively, a wedge-shaped arrangement of the guide areas 106 would be possible.

Figure 6 shows a blower 100 in an exploded view with a cassette-like blower housing 102 with first and second housing half-shells 126, 128, an impeller 116, a blower motor 114 and a connecting device 132. The connecting device 132 is between the first housing half-shell 126 and one made up of a blower motor 114 and impeller 116 formed unit arranged. The connecting device 132 is connected on the one hand to the first housing half-shell 126, and on the other hand to the blower impeller 116 and / or the blower motor 114. For connection to the first housing half-shell 126, the connecting device 132 has a relatively large-area and torsionally rigid connection area 134, which comes to rest in a corresponding connection area 136 of the first housing half-shell 126. This connection ensures a precise and stable tilting of the fan impeller 116 and fan motor 114 in the fan housing 102. Interfering forces, such as may arise when starting the fan 100 or due to an imbalance of the impeller 116, do not have an effect negatively affect fan operation. A precise arrangement of the impeller 116 in the blower 100 is thus achieved without the risk of the impeller 116 starting up in the flow channel 130. The use of a softer, possibly better vibration-damping blower housing material is also possible.

Figure 7 shows a blower 100, comprising a cassette-like blower housing 102 with two cable ducts 138 and electrical plug connectors 140. The cable ducts 138 are designed as recesses arranged in the outer surface of the blower housing 102, here the first housing half-shell 126, the cable ducts 138 being designed to record electrical lines and / or signal lines of a blower motor 114 and lead them to the front 142 of the blower housing 102 for connection to an electricity supply provided on the heat pump side and / or a signal transmitter. Alternatively, they could also be guided to a rear side 144 of the blower housing 102. The electrical lines and / or signal lines terminate in electrical connectors on the front 142 of the blower housing 102, where they can be connected and detached to corresponding connectors of the heat pump-side electricity supply and / or signal transmitter.

Claims (15)

Heat pump (200), in particular air source heat pump, for heating and / or cooling of living spaces and / or of fluids, in particular of drinking water, comprising
a fan (100) for conveying an air flow and
a heat pump housing (202) in which the fan (100) is arranged or can be arranged,
characterized in that the blower (100) comprises a blower housing (102) designed in the manner of a cassette,
the blower housing (102) having at least a first guide region (106),
wherein the first guide region (106) is designed to guide the fan (100) when the fan (100) is pushed into the heat pump housing (202) and / or when it is pulled out of the heat pump housing (202). Heat pump (200) according to claim 1,
characterized in that the heat pump housing (202) has at least one second guide region (206),
wherein the second guide region (206) is designed to correspond to the first guide region (106) of the fan housing (102) and the fan (100) when the fan (100) is pushed into the heat pump housing (202) and when it is pulled out of the Guide heat pump housing (202). Heat pump (200) according to claim 1 or 2,
characterized in that the blower housing (102) and / or the heat pump housing (202) have at least one coding area (118, 218) for mechanically coding their relative arrangement, so that the blower housing (102) can only be arranged in a desired orientation in the heat pump housing (202) is. Heat pump (200) according to one of the preceding claims,
characterized in that the first guide area (106) and / or the second guide area (206) are designed as a surface and / or edge and / or rail. Heat pump (200) according to one of the preceding claims,
characterized in that the at least one first guide area (106) and / or the at least one second guide area (206) are configured to be essentially parallel to one another. Heat pump (200) according to one of the preceding claims,
characterized in that the at least one first guide area (106) and / or the at least one second guide area (206) are formed into a wedge-shaped arrangement, in particular in order to enclose a wedge angle in the range between one and five degrees of angle. Heat pump (200) according to one of the preceding claims,
characterized in that the heat pump housing (202) has at least one depth stop for the fan (100), the depth stop being designed to give the fan (100) a defined operating position in the heat pump housing (202) when the fan (100) is pushed in. Heat pump (200) according to one of the preceding claims,
characterized in that the heat pump housing (202) comprises a detachable housing cover (226), the housing cover (226) being designed to fix the fan (100) in the operating position in a state connected to the heat pump housing (202). Heat pump (200) according to one of the preceding claims,
characterized in that the blower housing (102) comprises a foam, in particular is essentially formed from a foam. Heat pump (200) according to one of the preceding claims,
characterized in that the fan housing (102) comprises a first housing half-shell (126) and a second housing half-shell (128),
and that the first housing half-shell (126) and the second housing half-shell (128) form a flow channel (130), in particular helical, for the air flow between them. Heat pump (200) according to one of the preceding claims,
characterized in that the blower (100) has a connecting device (132) for connecting to the blower housing (102) on the one hand, and to a blower impeller (116) and / or a blower motor (114) on the other hand,
wherein a connection area (134) of the connecting device (132) for connecting to the blower housing (102) is formed to form a flat and torsionally rigid connection. Heat pump (200) according to one of the preceding claims,
characterized in that at least one cable duct (138) is provided on the blower housing (102),
wherein the cable duct (138) is designed as a recess arranged in an outer surface of the blower housing (102),
wherein the cable duct (138) is designed to receive electrical lines and / or signal lines of a blower motor (114) and for connection to an electricity supply and / or a signal generator to a front side (142) and / or a rear side (144) of the blower housing (102). Heat pump (200) according to claim 12,
characterized in that the electrical lines and / or signal lines of the blower motor (114) led to the front (142) and / or rear (144) of the blower housing (102) open into at least one electrical plug connector (140). Heat pump (200) according to one of the preceding claims,
characterized in that an inflow opening (120) for inflowing the air flow into the blower (100) and an outflow opening (122) for outflowing the air flow out of the blower (100) are formed on the blower housing (102),
wherein the inflow opening (120) and / or the outflow opening (122) have a circumferential, lip-shaped or bead-like protruding sealing area (124) for sealing the fan housing (102) against an inflow connection and / or outflow connection on the heat pump side,
wherein the sealing region (124) seals in an operating position of the fan (100) in the pushed-in state in the heat pump housing (202) by pressing. Blower (100), in particular for use in a heat pump (200) according to one of the preceding claims, characterized by a cassette-shaped blower housing (102) with at least one guide area (106).

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