Abstract: A heat pump arrangement includes a heat pump device, an evaporator cycle interface for inputting liquid to be cooled into the heat pump device and for outputting cooled liquid out of the heat pump device, a condenser cycle interface for inputting liquid to be heated into the heat pump device and for outputting heated liquid out of the heat pump device, a controllable heat exchanger for controllably coupling the evaporator cycle interface and the condenser cycle interface, and a control for controlling the controllable heat exchanger in dependence on an evaporator cycle temperature in the evaporator cycle interface or a condenser cycle temperature in the condenser cycle interface.

Abstract: A heat pump, having: an evaporator for evaporating a working liquid; a liquefier for condensing a compressed working vapor; a compressor motor with a suction mouth having attached thereto a radial impeller to convey a working vapor evaporated in the evaporator through the suction mouth; a guide space arranged to guide a working vapor conveyed by the radial impeller into the condenser; and a cooling device for cooling the guide space or the suction mouth with a liquid, wherein the cooling device is configured to guide the liquid onto an outside of the guide space or of the suction mouth, wherein the outside is not in contact with the working vapor, and wherein an inside of the guide space or of the suction mouth is in contact with the working vapor.

Abstract: A heat pump includes a housing; a liquefier and an evaporator arranged inside the housing; and a compressor interposed between the evaporator and the liquefier in terms of fluid flow, the compressor having a motor, an impeller connected to the motor, and a diffusor, the diffusor having a diffusor portion extending between the motor and the impeller, the diffusor portion having at least two parts, a first part of the diffusor portion being connected to the housing and a second part of the diffusor portion being connected to the motor, wherein the first part of the diffusor portion has an opening, wherein the second part of the diffusor portion is configured to close the opening, and wherein the opening is dimensioned such that the impeller is removable from the housing through the opening.

Abstract: A heat pump system includes a first heat pump arrangement having a compressor having a compressor output; a second heat pump arrangement having an input portion and an output portion; and a coupler for thermally coupling the first heat pump arrangement and the second heat pump arrangement, the coupler including a first heat exchanger and a second heat exchanger, the first heat exchanger being connected to the input portion of the second heat pump arrangement, and the second heat exchanger being connected to the output portion of the second heat pump arrangement.

Abstract: A fluid switchover device includes a housing having at least three ports leading into an interior space; a valve flap rotatably arranged within the housing and having a rotational axis that is mounted to the housing at first and second locations; and a circumferential seal mounted to the valve flap and having first and second evasion portions at first and second locations, respectively, which are configured to evade the rotational axis on the same side of the valve flap, and the valve flap is configured to slidingly engage a boundary of the interior space by means of the circumferential seal, so that at a first position of the valve flap, the first and second ports are connected, and the first and third ports are mutually sealed off, and in a second position, the first and third ports are connected, and the first and second ports are mutually sealed off.

Abstract: A heat pump includes a condenser for condensing compressed working vapor; a foreign gas collection space arranged within the condenser, the foreign gas collection space comprising: a condensation surface which during operation of the heat pump is colder than a temperature of the working vapor to be condensed; and a partition wall arranged, within the condenser, between the condensation surface and a condensation zone; and a foreign gas discharge device coupled to the foreign gas collection space so as to discharge foreign gas from the foreign gas collection space.

Abstract: A heat pump system includes a heat pump stage having a first evaporator, a first liquefier, and a first compressor; and a further heat pump stage having a second evaporator, a second liquefier, and a second compressor, wherein a first liquefier exit of the first liquefier is connected to a second evaporator entrance of the second evaporator via a connecting lead.

Abstract: A heat pump includes a condenser for condensing compressed working vapor, a gas trap coupled to the condenser via a foreign gas feed inlet and including: a housing having a foreign gas feed entrance, a working liquid feed inlet within the housing; a working liquid discharge outlet within the housing, and a pump for pumping off gas from the housing, wherein the housing, the working liquid feed inlet and the working liquid discharge outlet are configured such that during operation, a working liquid flow takes place, within the housing, from the working liquid feed inlet to the working liquid discharge outlet, and wherein the working liquid feed inlet is coupled to the heat pump so as to direct, during operation of the heat pump, working liquid which is colder than a working liquid within the condenser.

Abstract: A heat pump system includes a first heat pump arrangement configured to operate with a first heat pump medium including CO2; a second heat pump arrangement configured to operate with a second heat pump medium including water; and a coupler for thermally coupling the first heat pump arrangement to the second heat pump arrangement.

Abstract: A heat pump includes a condenser having a condenser housing; a compressor motor mounted on the condenser housing and having a rotor and a stator, the rotor having a motor shaft which has a compressor wheel for compressing working medium vapor mounted thereon, and the compressor motor having a motor wall; a motor housing which surrounds the compressor motor and has a working medium intake so as to direct liquid working medium out of the condenser to the motor wall for the purpose of cooling the motor, wherein the motor housing is further configured to form a vapor space during operation of the heat pump, and wherein the motor housing further has a vapor discharge outlet for discharging vapor from the vapor space within the motor housing.

Abstract: A heat pump includes an evaporator for evaporating working liquid within an evaporator space bounded by an evaporator base, and a condenser for condensing evaporated working liquid within a condenser space bounded by a condenser base, the evaporator space being at least partially surrounded by the condenser space, the evaporator space being separated from the condenser space by the condenser base, and the condenser base being connected to the evaporator base.

Abstract: A heat pump includes a first portion for evaporating a working fluid at a first pressure, for compressing the evaporated working fluid to a second, higher pressure, and for liquefying the compressed working fluid within a liquefier, and a second portion for compressing liquid working fluid to a third pressure, which is higher than the second pressure, for evaporating the working fluid compressed to the third pressure, for relaxing the evaporated working fluid to a pressure, which is lower than the third pressure, so as to generate electrical current, and for liquefying relaxed evaporated working fluid within the liquefier.

Abstract: A heat pump has an evaporator for evaporating water as a working liquid so as to produce a working vapor, the evaporation taking place at an evaporation pressure of less than 20 hPa. The working vapor is compressed to a working pressure of at least 25 hPa by a dynamic-type compressor so as to then be liquefied within a liquefier by direct contact with liquefier water. The heat pump is preferably an open system, wherein water present in the environment in the form of ground water, sea water, river water, lake water or brine is evaporated, and wherein water which has been liquefied again is fed to the evaporator, to the soil or to a water treatment plant.

Abstract: A rotor includes a rotor shaft with a mounting portion along a mounting region of the shaft; and a plurality of permanent magnets mounted in the mounting portion on the rotor shaft, wherein the rotor shaft includes, in the mounting portion, a region with a radius reduced with respect to a circular cross-section, such that a radially measured thickness of a permanent magnet is greater in the region than in an adjacent region with non-reduced radius of the rotor shaft.

Abstract: A thermodynamic device includes a first liquid container configured to maintain a first pressure during operation, the first liquid container being partially filled with a working fluid during operation, a second liquid container configured to maintain a second pressure during operation, the second pressure being higher than the first pressure, the second liquid container being partially filled with the working fluid during operation; and a compensation pipe permeable to the working fluid and including an inlet arranged within the second liquid container so as to define, during operation, a working fluid level within the second liquid container, and including an outlet arranged within the first liquid container so that working fluid can be transported from the inlet into the outlet, the inlet being arranged to be higher up than the outlet in the installation direction.

Abstract: A heat pump includes an evaporator with an evaporator inlet and an evaporator outlet; a compressor for compressing operating liquid evaporated in the evaporator; and a condenser for condensing evaporated operating liquid compressed in the compressor, wherein the condenser includes a condenser inlet and a condenser outlet, wherein the evaporator inlet is connected to a return from a region to be heated, and wherein the condenser inlet is connected to a return from a region to be cooled.

Abstract: A heat pump includes an evaporator with an evaporator inlet and an evaporator outlet; a compressor for compressing operating liquid evaporated in the evaporator; and a condenser for condensing evaporated operating liquid compressed in the compressor, wherein the condenser includes a condenser inlet and a condenser outlet, wherein the evaporator inlet is connected to a return from a region to be heated, and wherein the condenser inlet is connected to a return from a region to be cooled.

Abstract: A switching power supply includes a plurality of parallel branches, each parallel branch including two serially connected controllable switches and a coil connected between the two switches and an output node, a capacitor connected between the output node of the parallel branches and ground; and a controller configured to switch the two serially connected controllable switches of each parallel branch such that a first switch of a parallel branch is switched from a conducting state to a non-conducting state when a current flowing through a coil of the parallel branch reaches a first current value larger than 5 A, and such that the second switch is switched from a conducting state to a non-conducting state when the current flowing through the coil of the parallel branch reaches a second current value smaller than 0 A.

Abstract: A liquefier for a heat pump includes a liquefier space, a compressor motor and a motor fixture for holding the stationary motor part, wherein the motor further has a motor shaft and a compressor wheel connected to the motor shaft. The motor fixture is formed so that the stationary motor part is held so that it is in contact with liquefied working fluid when liquefied working fluid is filled in the liquefier space. Furthermore, the compressor wheel extends into a region of the heat pump in which a channel for gaseous working fluid to be compressed passes.

Abstract: In a heat pump with an evaporator and a liquefier as well as a gas region extending between the evaporator and the liquefier, the liquefier is arranged above the evaporator in a setup direction for operation of the heat pump.