Heat exchanger, air conditioner arrangement and switch cabinet

Abstract

A heat exchanger for air conditioning in a switch cabinet, with a pipe system that is configured to transport a coolant, and comprises multiple pipe pieces, and at least one pipe piece connector element, wherein the at least one pipe piece connector element connects two end sections of the pipe pieces to each other fluidically, and with a heat transfer element, which is preferably embodied as a fin arrangement with a multiplicity of fins, wherein the heat transfer element accommodates the pipe pieces of the pipe system in such a manner that the end sections of the pipe pieces protrude from the heat transfer element. Additionally, at least one capsule is provided, wherein the end sections of the pipe pieces of the pipe systems open into the at least one capsule, so the at least one pipe piece connector element is arranged inside the at least one capsule.

1 . A heat exchanger, in particular a heat exchanger for air conditioning in a switch cabinet, with a pipe system that is configured to transport a coolant and comprises multiple pipe pieces and at least one pipe piece connector element, wherein the at least one pipe piece connector element connects two or more end sections of the pipe pieces to each other fluidically, and with a heat transfer element that is preferably embodied as a fin arrangement with a multiplicity of fins, wherein the heat transfer element accommodates the pipe pieces of the pipe system in such a manner that the end sections of the pipe pieces protrude from the heat transfer element, wherein the heat exchanger comprises at least one capsule, wherein end sections of the pipe pieces of the pipe system open into the at least one capsule, so that the at least one pipe piece connector element is arranged inside the at least one capsule. 
     
     
         2 . The heat exchanger according to  claim 1 , wherein two capsules, are provided, between which the heat transfer element is arranged, wherein the end sections of the pipe pieces of the pipe system each open into one of the capsules, wherein at least one pipe piece connector element is arranged in each of the two capsules. 
     
     
         3 . The heat exchanger according to  claim 1 , wherein the at least one pipe piece connector element comprises multiple pipe bends, wherein each of the pipe bends connects two end sections of two pipe pieces to each other fluidically. 
     
     
         4 . The heat exchanger according to  claim 1 , wherein the pipe pieces and the at least one pipe piece connector element are connected materially coherent to each other via connection points, wherein the connection points are each arranged inside one of the capsules. 
     
     
         5 . The heat exchanger according to  claim 1 , wherein the pipe pieces have a curvature that is less than or equal to 90°, in particular less than or equal to 45°, relative to their respective longitudinal axis. 
     
     
         6 . The heat exchanger according to  claim 1 , wherein the pipe pieces are without curvature relative to their respective longitudinal axis. 
     
     
         7 . The heat exchanger according to  claim 3 , wherein the pipe bends have a bending between 170° and 190°, preferably substantially 180°, particularly preferably 180°. 
     
     
         8 . The heat exchanger according to  claim 1 , wherein a first pipe piece is connected to a coolant inflow and a second pipe piece is connected to a coolant outflow. 
     
     
         9 . The heat exchanger according to  claim 1 , wherein the coolant is combustible and/or potentially explosive, and/or that the coolant is or contains propane, butane, isobutane or propene. 
     
     
         10 . The heat exchanger according to  claim 1 , wherein the fins of the heat transfer element are connected directly to the pipe pieces for the purpose of heat transfer, wherein preferably the at least one capsule is filled with a fluid, preferably with a gas, particularly preferably with air, or with a liquid, preferably with water. 
     
     
         11 . The heat exchanger according to  claim 10 , wherein the at least one capsule is configured to be fluid-impermeable and/or gas-impermeable. 
     
     
         12 . The heat exchanger according to  claim 1 , wherein at least one of the capsules, in particular each capsule, includes a leak detector, wherein the leak detector preferably comprises a pressure switch and/or a pressure sensor and/or a fluid sensor, in particular a liquid sensor and/or a gas sensor. 
     
     
         13 . The heat exchanger according to  claim 1 , wherein the pipe pieces are each encircled by an outer pipe in such a way that an annular space is created between the pipe pieces and the associated outer pipes, which space is configured to transport a liquid, in particular a thermofluid, wherein preferably the pipe pieces and the associated outer pipes are arranged coaxially with each other. 
     
     
         14 . The heat exchanger according to  claim 13 , wherein the heat exchanger includes two capsules, wherein the outer pipes have end sections, each of which opens into one of the capsules, so that the capsules are connected to each other fluidically via the annular spaces, wherein preferably the pipe pieces with the associated outer pipes are connected to each other via spacers, in particular via spacer discs, wherein the outer pipes preferably have recesses, in particular drillholes, via which the annular spaces are connected fluidically to the capsules. 
     
     
         15 . The heat exchanger according to  claim 13 , wherein the at least one capsule includes a leak detector, wherein the leak detector preferably comprises a pressure switch and/or a pressure sensor and/or a liquid sensor and/or a gas sensor, wherein preferably the fins of the heat transfer element are connected directly to the outer pipes for the purpose of heat transfer. 
     
     
         16 . The heat exchanger according to  claim 15 , wherein the heat exchanger is embodied as an evaporator of a compression refrigeration machine. 
     
     
         17 . An air conditioner arrangement for a switch cabinet, in particular for use with a switch cabinet, wherein the air conditioner arrangement includes a housing that has a cabinet side housing region and an external housing region, and a partition wall arranged between the cabinet side housing region and the external housing region, which separates the cabinet side housing region and the external housing region from each other fluidically, wherein the air conditioner arrangement further comprises a heat exchanger according to  claim 1 , wherein the heat exchanger, is arranged in particular entirely in the cabinet side housing region. 
     
     
         18 . The air conditioner according to  claim 17 , wherein the heat exchanger is embodied as an evaporator of a compression refrigeration machine which comprises a compressor, a condenser and a throttling device, wherein the compressor, the condenser and the throttling device are arranged in the external housing region of the air conditioner. 
     
     
         19 . The air conditioner according to  claim 17 , wherein the coolant inflow and the coolant outflow pass through the partition wall, and/or wherein sections of the at least one capsule lie against the partition wall and/or form the partition wall. 
     
     
         20 . A switch cabinet with a housing that accommodates a multiplicity of electronic components, wherein the switch cabinet contains a heat exchanger and/or an air conditioner arrangement according to  claim 1 .