Assembly, in particular refrigeration machine or heat pump

Abstract

An assembly may comprise a first heat reservoir acting as a heat source, a second heat reservoir acting as a heat sink, a thermochemical reactor including an adsorption refrigerator or an adsorption heat pump that can be connected or is connected thermally and fluidically to the heat reservoirs, a heat transfer fluid circuit in which a heat transfer fluid is provided for transporting heat between the two heat reservoirs and the thermochemical reactor, and a temporary heat store that is provided in the heat transfer fluid circuit for temporarily storing the heat transfer fluid. The temporary heat store may be designed to receive the heat transfer fluid at two different temperature levels. The temporary heat store may include a first sub-store with a variable store volume and that is thermally and fluidically separate from a second sub-store with a variable store volume. A valve system may be present in the heat transfer fluid circuit.

1 . An assembly of a refrigeration machine or heat pump, comprising:
 a first heat reservoir configured as heat source and with a second heat reservoir configured as heat sync,   a thermochemical reactor configured to be thermally and fluidically connected to the heat reservoir including an adsorption refrigeration machine or adsorption heat pump,   a heat transfer fluid circuit, in which a heat transfer fluid for the transport of heat between the two heat reservoirs and the thermochemical reactor is arranged,   a temporary heat store arranged in the heat transfer fluid circuit for temporarily storing the heat transfer fluid,   wherein the temporary heat store is configured for receiving and outputting temperature-layered heat transfer fluid masses and comprises a first sub-store with variable storage volume and that is thermally and fluidically separated from a second sub-store with variable storage volume,   a delivery device that is present in the heat transfer fluid circuit for driving the heat transfer fluid in the heat transfer fluid circuit,   with a valve system that is present in the heat transfer fluid circuit, wherein the valve system comprises:   an adjustable first valve device, by which a fluid inlet of the thermochemical reactor can be optionally connected to the fluid outlet of the first or second heat reservoir,   an adjustable second valve device, by which a fluid outlet of the thermochemical store can be optionally connected to the fluid inlet of the first or second heat reservoir,   an adjustable third valve device, by which the first sub-store can be optionally connected via the first heat reservoir or directly to the first valve device,   an adjustable fourth valve device, by which the second sub-store can be optionally connected via the second heat reservoir or directly to the first valve device, and   a control/regulating device, which is equipped for controlling at least two of the valve devices of the valve system.   
     
     
         2 . The assembly according to  claim 1 , wherein the temporary heat store is fluidically connected in parallel with the second valve device, so that the fluid inlet of the first heat reservoir fluidically communicates with the first sub-store and the fluid inlet of the second heat reservoir fluidically communicates with the second sub-store. 
     
     
         3 . The assembly according to  claim 1 , wherein at least one of the first valve device, the second valve device, the third valve device, and the fourth valve device comprises a 3/2-way changeover valve. 
     
     
         4 . The assembly according to  claim 3 , wherein the 3/2-way changeover valve is designed as self-switching valve. 
     
     
         5 . The assembly according to  claim 1 , wherein the temporary heat store is designed for the simultaneous receiving and outputting of a first and of a second fluid mass of the heat transfer fluid, and
 wherein the two fluid masses have different temperature layers between the temperature levels.   
     
     
         6 . The assembly according to  claim 1 , wherein the volume-variable first sub-store is designed complementarily to the volume-variable second sub-store, so that the total volume formed by the two sub-stores is constant. 
     
     
         7 . The assembly according to  claim 1 , wherein the temporary heat store is designed as a vessel, wherein the vessel comprises:
 a housing, in the interior of which a separating element is moveably arranged, which subdivides the interior into a volume-variable first sub-store and a likewise volume-variable second sub-store that is thermally insulated from the first sub-store,   a first passage that is present in the housing for introducing and discharging a heat transfer fluid with a first temperature layering in the or from the first sub-store respectively,   a second passage that is present in the housing for introducing and discharging the heat transfer fluid with a second temperature layering into or from the second sub-store respectively,   wherein the volume-variable first sub-store is designed complementarily to the volume-variable second sub-store, so that the total volume formed by the two sub-stores is constant.   
     
     
         8 . The assembly according to  claim 7 , wherein the housing is designed elongated, and
 wherein the first passage is arranged at a first longitudinal end and the second passage at a second longitudinal end that is located opposite the first longitudinal end.   
     
     
         9 . The assembly according to  claim 7 , wherein the housing is designed as tubular body, which extends along an axial direction (A) substantially in a straight line, and
 wherein the separating element for forming the two volume-variable sub-stores moveably lies against the inside of a circumferential wall of the tubular body along an axial direction.   
     
     
         10 . The assembly according to  claim 7 , wherein at least one of:
 on the first passage a first sensor element is provided, by which it can be determined if the separating element is located in a first end position, in which the separating element is located at a minimum distance from the first passage ( 108   a ), and   on the second passage a second sensor element is provided, by which it can be determined if the separating element is located in a second end position, in which the separating element is located at a minimum distance from the second passage.   
     
     
         11 . The assembly according to  claim 1 , wherein, in the adjustable valve devices of the valve system, an operating state is adjustable by the control/regulating device, in which the heat transfer fluid circuit forms a first part circuit, and in which the heat transfer fluid circulates between the thermochemical reactor and the second heat reservoir, so that heat is transferred from the thermochemical reactor into the second heat reservoir. 
     
     
         12 . The assembly according to  claim 9 , wherein, in this operating state, the first valve device and the second valve device each fluidically connect the second heat reservoir to the thermochemical reactor. 
     
     
         13 . The assembly according to  claim 1 , wherein, in the at least one adjustable valve device of the valve system, an operating state is adjustable by the control/regulating device in which the heat transfer fluid circuit forms a second part circuit, in which the heat transfer fluid (F) circulates between the thermochemical reactor and the first heat reservoir, so that heat is transferred from the first heat reservoir into the thermochemical reactor. 
     
     
         14 . The assembly according to  claim 1 , wherein, in this operating state, the first valve device and the second valve device each fluidically connect the first heat reservoir to the thermochemical reactor. 
     
     
         15 . The assembly according to  claim 1 , wherein, in the adjustable valve devices of the valve system, an operating state is adjustable by the control/regulating device, wherein:
 heat transfer fluid is transported from the first sub-store into the thermochemical reactor, and   heat transfer fluid is transported from the thermochemical reactor into the second sub-store.   
     
     
         16 . The assembly according to  claim 1 , wherein, in this operating state:
 the first valve device and the third valve device fluidically connect the thermochemical reactor thereby bypassing the first heat reservoir directly to the first sub-store,   the second and the fourth valve device fluidically connect the thermochemical reactor to the second sub-store.   
     
     
         17 . The assembly according to  claim 1 , wherein, in the at least one adjustable device of the valve system, an operating state is adjustable by the control/regulating device wherein:
 heat transfer fluid bypassing the second heat reservoir is transported into the thermochemical reactor,   heat transfer fluid is transported from the thermochemical reactor into the first sub-store.   
     
     
         18 . The assembly according to  claim 1 , wherein, in this operating state:
 the first valve device and the third valve device fluidically connect the thermochemical store bypassing the second heat reservoir directly to the second sub-store,   the second valve device and the fourth valve device fluidically connect the thermochemical store directly to the first sub-store,   the first valve device and the fourth valve device fluidically connect the thermochemical reactor bypassing the second heat reservoir directly to the second sub-store,   the second and the third valve device fluidically connect the thermochemical reactor to the first sub-store.   
     
     
         19 . An assembly comprising:
 a first heat reservoir configured as heat source and with a second heat reservoir configured as heat sync;   a thermochemical reactor configured to be thermally and fluidically connected to the heat reservoir including an adsorption refrigeration machine or adsorption heat pump;   a heat transfer fluid circuit including a heat transfer fluid and configured to transport heat between the two heat reservoirs and the thermochemical reactor;   a temporary heat store arranged in the heat transfer fluid circuit for temporarily storing the heat transfer fluid,   wherein the temporary heat store is configured for receiving and outputting temperature-layered heat transfer fluid masses, and comprises a first sub-store with variable storage volume and that is thermally and fluidically separated from a second sub-store with variable storage volume.   
     
     
         19 . The assembly according to  claim 1 , further comprising:
 a delivery device as part of the heat transfer fluid circuit and configured for driving the heat transfer fluid in the heat transfer fluid circuit; and   a valve system as part of the heat transfer fluid circuit, the valve system including:
 an adjustable first valve device, by which a fluid inlet of the thermochemical reactor can be optionally connected to the fluid outlet of the first or second heat reservoir, 
 an adjustable second valve device, by which a fluid outlet of the thermochemical store can be optionally connected to the fluid inlet of the first or second heat reservoir, 
 an adjustable third valve device, by which the first sub-store can be optionally connected via the first heat reservoir or directly to the first valve device, 
 an adjustable fourth valve device, by which the second sub-store can be optionally connected via the second heat reservoir or directly to the first valve device, and 
 a control/regulating device, which is equipped for controlling at least two of the valve devices of the valve system.