Abstract: The invention relates to a multi-phase plate heat exchanger for 2 air media, wherein the surfaces (13a) are wetted for the heat transfer of fluids (3, 4), and the primary medium (1) is the warm and moist fresh air (15) and the secondary medium (2) is the cool dry exhaust air (16) of an occupied space, which flows in the opposite direction to the primary medium (1), wherein the surfaces of the plate gaps (1a) for the primary medium (1) are wetted with hygroscopic solution (17a) and the surfaces of the plate gaps (2a) for the secondary medium (2) are wetted with water (18), and wherein the regeneration of this hygroscopic solution (17b) occurs in a heat exchanger (14), in which the surfaces of the plate gaps (la) for the primary medium (1) are wetted with preheated thinned hygroscopic solution (17b), and wherein the secondary medium (2) is air (15c) which is heated after the primary passage through the heat exchanger (14) and is saturated with steam, such that, on the surfaces of the plate gaps (1a) for the sec

Abstract: This invention relates to a system and apparatus for electronic control of an absorption refrigeration machine. The flow of liquids within the machine, as well as the concentration of the refrigerant/absorbent mixture solution are precisely controlled through the use of solenoid valves. These solenoids are controlled via a microprocessor control system with various sensors attached, which may include fluid level sensors, pressure sensors, temperature sensors and other environmental data sensors.

Abstract: An intermittent ammonia-water absorption refrigerator, designed as a stack of vertical plates, having bypass, temperature control, and heat recovery, consisting of two generators, three absorbers, one evaporator, one condenser, two solution-steam pumps controlled by two control valves wherein, for the structuring of the plate stack, in addition to the thin, two-dimensional moulding plates for generators, absorbers, condenser, and evaporator, thick moulding plates having three-dimensional elements for containers, pumps, and distribution channels are used, and the plate stack consists of three face-bonded partial stacks, of which the outer-most contain containers, pumps, and distribution channels, the center stack having the generators, absorbers, condenser, and evaporator is narrower, such that there is a recessed vertical longitudinal channel on the side of the entire plate stack in which the control elements of the machine are installed.

Abstract: The invention relates to a single-stage ammonia-water absorption refrigeration machine in a batch process without solution pump and without rectification, consisting of a generator (1) with pressure reducer (29) and solution concentration optimization (3), absorber (14), condenser (25), evaporator (24), wherein the generator (1) together with a back-cooled input vessel (3) and the pressure reducer form a structural and pressure unit, in which the pressure reducer (29), at the start of each operating cycle, reduces the generator pressure below the absorber pressure, in such a way that from there via a check valve (69) solution flows in the back-cooled generator input vessel (3), fills it, and from there the solution gradually flows, following gravity, into a hot zone (1), which advantageously but not necessarily consists of a preheating zone (11) that is heated by the absorber (18) and an externally heated hot zone (12), where ammonia vapor is formed, which is directed by a siphon duct (8) from below through t

Abstract: The invention relates to an absorption refrigeration machine using the Platen-Munters system and comprising a generator (7) for evaporating a refrigerant in a solvent, a solvent separator (2) in which the solvent is separated from the refrigerant; a condenser (3) for liquefying the refrigerant; an evaporator (4) in which the refrigerant is evaporated using a dry gas while beeing cooled; possibly a first gas heat exchanger (6); and an absorber (5) in which the evaporated refrigerant is added to the depleted mixture of refrigerant and solvent which is then again evaporated in the generator (7). The output of the evaporator (4) or the output of the first gas heat exchanger (6) which is possibly positioned downstream of the evaporator (4) and the output of the generator (7) discharge into a bypass (8) connected to the absorber (5).

Abstract: A food cleansing machine includes a container for receiving food, a pump for injecting rinsing fluid into the container tangentially, coarse and fine sieves for sifting the food from any impurities, and a discharge device for flushing out the impurities together with the rinsing fluid. The operative surface area of the fine sieve exceeds the operative surface area of the coarse sieve.