Abstract: A heat pump includes a housing, a housing opening that is provided in the housing and is in the form of a water drain, at least one heat-pump component that is elastically mounted in the housing, and a transport securing device for fixing the elastically mounted heat-pump component while the housing is being transported. The transport securing device is configured to close the housing opening with the fixing of the elastically mounted heat-pump component released.

Abstract: In a method for operating a heating system, a heating circuit medium is guided in an overall heating circuit and in first and second sub-heating circuits connected to the overall heating circuit. A heating circuit medium volumetric flow through the sub-heating circuits is defined by a valve device and fed to the second sub-heating circuit via a first valve device connection and/or guided via a second valve device connection. The heating circuit medium volumetric flow is fed via a connection of the valve device connected to the overall heating circuit. If necessary, the heating circuit medium volumetric flow is fed to the first sub-heating circuit via the second connection of the valve device, and if necessary, the heating circuit medium volumetric flow is delivered via a bypass on the second sub-heating circuit. If necessary, the heating circuit volumetric flow is guided through a buffer store at the bypass.

Abstract: A storage container and a method for designing same, including a wall that forms the storage container and has an inner face and an outer face, and an insulation layer that rests against the outer face of the wall, encloses the storage container and has different thicknesses in different regions of the wall. The insulation layer is thicker in a region that has an above-average temperature difference between the inner face and the outer face of the wall than in a region that has a smaller temperature difference between the inner face and the outer face of the wall.

Abstract: A heating device includes a housing closed with a cover element and enclosing a combustion chamber, wherein an opening for receiving a burner device pointing into the combustion chamber is provided on the cover element, wherein the opening is delimited by a first cylindrical sheet section of the cover element (1), wherein the first sheet section is connected to a second sheet section of the cover element so as to face away from the combustion chamber. The second sheet section extends radially outwards as a contact flange for the burner device.

Abstract: A heat pump includes a housing, at least one load transfer element arranged on an underside of the housing, a compressor arranged in the housing perpendicularly above the load transfer element, and further heat pump components that are likewise arranged in the housing, wherein a resilient insulating element is arranged between the compressor and the load transfer element. A plurality of heat pump components are positioned on a common carrying element arranged perpendicularly above a load transfer element, wherein a resilient insulating element is arranged between the carrying element and the load transfer element, wherein the compressor and the carrying element are assigned to the same load transfer element.

Abstract: In a method for operating a heat pump system, heat can be supplied to a heating circuit medium using a heat pump; a heating circuit medium flows through a heating circuit; in a first operating mode of the heat pump system, heat is supplied to at least one heat sink located in the heating circuit between a flow line of the heating circuit and a return line of the heating circuit; in a second operating mode of the heat pump system, heat is supplied to a buffer located in the heating circuit between the flow line and the return line and in parallel with the at least one heat sink. In a third operating mode of the heat pump system, an electrical heating device is used to supply heat to the heating circuit medium located in the buffer in order to start the heat pump.

Abstract: A heat pump includes a compressor for compressing a coolant and a further heat pump component through which the coolant flows, the compressor being designed to be connected to the further heat pump component in order to convey the coolant via fluid lines, and the compressor and the further heat pump component being designed to be connected to a housing of the heat pump via spring elements in order to reduce transmission of structure-borne sound. The compressor and the further heat pump component are designed to be firmly connected to one another exclusively, on the one hand, via the fluid lines which connect them and, on the other hand, via the spring elements connected to the housing of the heat pump.

Abstract: A heat pump includes a compressor that is connected via two refrigerant-conveying fluid lines to a heat pump component through which refrigerant flows, wherein each fluid line has a longitudinal axis, wherein an imaginary direction vector which coincides with the longitudinal axis points, on the route between the compressor and the heat pump component, at least once in a different direction to an imaginary starting direction vector which begins at the compressor, where it likewise coincides with the longitudinal axis, wherein the longitudinal axis extends in a space having three imaginary, mutually perpendicular planes. The fluid line is shaped such that the direction vector, on the route between the compressor and the heat pump component, and with respect to all three planes, extends so as to be rotated by an angle of more than 180° relative to the starting direction vector at least once.

Abstract: In a heating system operation method, a heating circuit medium is conveyed through an overall heating circuit flow path and at least through one sub-flow path of the overall path. How much medium is respectively conveyed through the sub-flow paths is controlled, and the medium, in order to clean it of dirt, is routed through an overall path filter. At system start-up, all the medium is routed via the sub-flow path having optionally the at least variable flow resistances or a known and/or unchanging flow resistance, termed reference flow path, and a conveying power reference value is determined and saved. To check the filter fouling state, during system operation, all the medium is again routed through the reference flow path used on start-up, a conveying power value is determined and compared with the reference value and, beginning at a predetermined deviation, a filter fouling signal is generated.

Abstract: A siphon includes a feed area for feeding a liquid, a downpipe connecting to the feed area, extended from top to bottom in a use position of the siphon, a deflection pipe filled with liquid during stationary operation on the end of the downpipe facing away from the feed area connecting to this, a riser pipe on the end of the deflection pipe facing away from the downpipe, and connecting to this, extended from bottom to top in the use position, and a discharge area connecting to the end of the riser pipe facing away from the deflection pipe for discharging liquid. A storage tank arranged on the siphon between the feed area and the discharge area is hydraulically connected to the deflection pipe and designed to automatically fill with liquid during stationary operation and to automatically empty into the deflection pipe following a pressure surge affecting the siphon.

Abstract: A device for adjusting a constant air volume flow has air guiding members which extend in a radial direction and in a state distributed about a longitudinal center axis of the device. Between adjacent air guiding members there are formed air passages which can be adjusted in terms of their opening cross section. The air guiding members are formed from a first and a second air guiding unit in each case. By rotating the first air guiding unit relative to the second air guiding unit, the opening cross section of the air passages can be changed. The air guiding units are constructed in such a manner that the air guiding member formed thereby has a closed and curved surface at least at the inflow side. This enables a change of the free flow cross section, wherein the location of the narrowest flow cross section is consistent at different adjustment positions.

Abstract: A heating device, comprising includes a housing closed with a cover element and enclosing a combustion chamber, wherein an opening for receiving a burner device pointing into the combustion chamber is provided on the cover element, wherein the opening is delimited by a first cylindrical sheet section of the cover element, wherein the first sheet section is connected to a second sheet section of the cover element so as to face away from the combustion chamber. The second sheet section extends radially outwards as a contact flange for the burner device.

Abstract: A compressor includes a compressor housing, a fastening device arranged on the compressor housing, and a support device, connected to the fastening device, for a temperature sensor, the support device being designed to hold, by pressing, the temperature sensor against a wall of the compressor housing. The support device has, for multiple connection to the fastening device, at least two sections, located on different sides of the temperature sensor, wherein, when the compressor is used as intended, the temperature sensor is designed to brace against the compressor housing from below.

Abstract: The invention relates to a connection device for a peripherally ribbed pipe (4), comprising:—a pipe receptacle (1) having a receiving opening for receiving an end of the pipe (4); and—at least one catch element (3) for fastening the pipe (4) in the pipe receptacle (1). The pipe receptacle (1) has a longitudinal center plane (M), which extends through the receiving opening. The catch element (3) has a first point (S1), which allows movement of at least part of the catch element relative to the pipe receptacle (1), and a second point (S2), which is designed to engage in a corrugation trough (41) of the peripherally ribbed pipe (4). At least when the pipe (4) is inserted and fastened, the first point (S1) lies closer to the longitudinal center plane (M) than the second point (S2) does. The connection device according to the invention allows easy, leak-tight and secure fastening of a pipe.

Abstract: A heat pump includes a refrigerant circuit for a refrigerant, a refrigerant collector belonging to the refrigerant circuit and through which the refrigerant flows, an expansion device through which the refrigerant flows and connected downstream of the refrigerant collector as seen in the flow direction of the refrigerant, an evaporator belonging to the refrigerant circuit and through which the refrigerant flows and connected downstream of the expansion device as seen in the flow direction of the refrigerant, and a condensate pan that is assigned to the evaporator and is designed to catch condensate forming on the evaporator. The refrigerant collector is designed to be connected in a thermally conductive manner to the condensate pan. In order for heat present externally at the refrigerant collector to be transferred by thermal conduction to the condensate pan, a distance between the refrigerant collector and the condensate pan is at most 15 cm.

Abstract: A closure unit for a ventilation device having at least two pivotally arranged flaps for closing a respective ventilation channel. The two flaps can be moved by a common shaft which defines a pivot axis. The two flaps are thus positively coupled and can be actuated simultaneously by a single motor. The closure unit allows the use of two heat exchangers operated in parallel without an additional bypass channel.

Abstract: A refrigeration circuit device includes a compressor for compressing a refrigerant, As viewed in the refrigerant flow direction, a condenser is connected downstream of the compressor, a first expansion device is connected downstream of the condenser, a heat exchanger is connected downstream of the first expansion device, a second expansion device is connected downstream of the heat exchanger, an evaporator is connected downstream of the second expansion device, and the compressor is connected downstream of the evaporator. The heat exchanger is configured for connection to an electronic device that is to be cooled, is configured as an internal heat exchanger for additional transfer of heat to the refrigerant, and includes a primary side, connected on one side to the first and on the other side to the second expansion device, and a secondary side, connected on one side to the evaporator and on the other side to the compressor.

Abstract: A method of operating a refrigeration cycle apparatus uses a compressor to compress a coolant. The compressed coolant is fed to a condenser for release of heat, the condensed coolant is later fed to a primary side of an internal heat exchanger for release of heat, and the cooled coolant is guided through an expansion device. The coolant expanded in the expansion device is fed to an evaporator for absorption of heat, the evaporated coolant is later fed to a secondary side of the internal heat exchanger for absorption of heat, and the heated coolant is fed to the compressor. For suction gas temperature control, an amount of heat transferred from the primary side to the secondary side of the internal heat exchanger is controlled with the aid of an additional expansion device arranged parallel to the heat exchanger and between the condenser and the evaporator.