Heat exchanger
OwnerBengt Viklund, Jörg Kirchnerinventors
Life of this patent
Estimating the term…
Abstract
A heat exchanger for cooling systems, air conditioning systems, or the like, which is equipped with a de-icing function. For de-icing, the conduits of the heat exchanger are heated and defrosted by an electrical current flow. The drainage of the condensed water is supported by openings in the wings of the wing tubes used.
Claims29
Heat exchanger for a device, comprising the following features:
- at least one coolant conduit having a first and a second end through which a coolant can be guided and which consists of electrically conductive material,
- at least one retaining clamp, which at least partially supports the coolant conduit, and at least one of a first electric voltage source or a second electric voltage source where
- the first electric voltage source is connectable to the first and second end of the coolant conduit or to the ends of at least a selected section of the coolant conduit so that an electrical heating current flows in the coolant conduit, and
- the second electric voltage source is connectable to at least one coil arrangement adjacent to the at least one coolant conduit so that an electrical heating current is inducible in the at least one coolant conduit by a magnetic field of the coil arrangement, wherein the first and the second end of the coolant conduit are each connected by means of an insulating sleeve with a coolant circuit of a device to insulate the coolant circuit of the device electrically from the coolant conduit.
(canceled)
Insulating sleeve for connecting two conduit ends, comprising the following features:
- a. a hollow cylindrical body made of electrically non-conductive material having a first and a second connection end,
- b. each connection end having an annular gap for receiving and fastening a conduit end.
18-21. (canceled)
Manufacturing method of a heat exchanger with heating, comprising the steps of:
- a. providing a coolant conduit having a first and a second end, consisting of an electrically conductive material,
- b. placing the coolant conduit in at least one retaining clamp,
- c. providing an electrical connection to the first and second end of the coolant conduit or to the ends of at least a section of the coolant conduit to which a first switchable electric voltage source is connectable, so that an electrical current flows through the coolant conduit, and/or
- d. providing at least one coil arrangement adjacent to the at least one coolant conduit which is connected to a second switchable electric voltage source, comprising the further step,
- e. connecting the coolant conduit by means of an insulating sleeve with a coolant circuit of a device, so that the device is electrically insulated from the coolant conduit.
(canceled)
De-icing method of a heat exchanger of a device, which has a coolant conduit of electrically conductive material, wherein the de-icing method comprises the steps of:
- a. applying a first electric voltage to a first and a second end of the coolant conduit, wherein the first and the second end of the coolant conduit are each connected by means of an insulating sleeve with a coolant circuit of a device to insulate the coolant circuit of the device electrically from the coolant conduit, so that an electrical current flows through the coolant conduit and heats the coolant conduit, and
- b. switching off the electric voltage after a time interval, so that the coolant conduit is no longer heated, and/or
- a′. applying a second electric voltage to at least one coil arrangement adjacent to the at least one coolant conduit, so that a magnetic field of the at least one coil arrangement induces an electrical heating current in the at least one coolant conduit, and
- b′. switching off the electric voltage after a time interval so that the coolant conduit is no longer heated.
Dependencies are inferred from the claim text.