2results about How to "Guaranteed vacuum environment" patented technology

This invention relates to the field of die-casting mold technology and discloses a die-casting mold for aluminum alloy forming, comprising a moving mold and a fixed mold, and further comprising: a pre-vacuuming mechanism, fixedly installed inside the fixed mold, the pre-vacuuming mechanism including a sealing element and a pre-vacuuming channel communicating with the sealing element, and a slot corresponding to the sealing element on the moving mold; a vacuuming mechanism, including a fixed mold vacuuming component fixed on the fixed mold and a moving mold vacuuming component fixed on the moving mold; and a feeding assembly, fixedly installed on the side of the fixed mold away from the moving mold. This die-casting mold for aluminum alloy forming, by setting the pre-vacuuming mechanism and the vacuuming mechanism, initiates pre-vacuuming during the mold closing process, utilizing the dynamic stage of the gradually decreasing cavity volume to expel most of the gas in advance; a second vacuuming is performed after mold closing to further extract residual gas. The synergistic effect of the two vacuuming processes effectively reduces the initial gas content in the cavity.

This invention relates to a plate absorption heat exchanger, comprising a base frame, and a heat pump unit, a first solution tank, a second solution tank, a circulating pump, a brazed heat exchanger, and a detachable plate heat exchanger mounted on the base frame. The heat pump unit includes a shell divided into four chambers, each housing a generator, a condenser, an absorber, and an evaporator. The generator, condenser, absorber, and evaporator each have a plate structure. The heat pump unit of this plate absorption heat exchanger has a plate structure for its generator, condenser, evaporator, and absorber, offering advantages such as high compactness, small size, and low cost.