Abstract: A compressor may include a shell assembly, first and second scrolls, a floating seal assembly, a modulation-valve ring, and a modulation-control-valve assembly. The shell assembly may define a suction-pressure region. The first scroll may include a discharge passage, a modulation port, and a biasing passage. The modulation-valve ring may cooperate with the floating seal assembly and the first scroll to define an axial-biasing chamber in fluid communication with the biasing passage. The modulation-valve ring may be axially displaceable between a closed position to close the modulation port and an open position to open the modulation port. The modulation-control-valve assembly may be mounted to the modulation-valve ring and may be movable between a first position corresponding to the closed position and a second position corresponding to the open position.

Abstract: A system (1) of hot plates (2, 3) includes more than one hot plates (2, 3), a heating medium (4) which heats the hot plates (2, 3), and a cooking medium dispensing means (5). The hot plates (2, 3) have at least one of the plates as an upper plate (2) and at least one of another plate as a lower plate (3), wherein the upper plate (2) and the lower plate (3) are functionally coupled to press and heat a food item when the food item is placed between the plates (2, 3). The cooking medium dispensing unit/component/etc. (5) dispenses a predefined quantity of the cooking medium at least on an upper surface of the food item, or a lower surface of the food item.