Abstract: Disclosed in the present invention is an electromagnetic pump, including: a pump body; an inner iron core, including a central cylinder, an axis of the central cylinder basically coinciding with an axis of the electromagnetic pump; a plurality of outer iron cores, disposed at least partially surrounding the inner iron core; a winding, at least partially disposed on the outer iron cores; and a pump channel mechanism, at least partially disposed between the outer iron cores and the inner iron core, where the pump channel mechanism includes: a first pump channel wall, a second pump channel wall, a circulation channel, and a cavity dividing structure, and being used for supporting the first pump channel wall and the second pump channel wall, the cavity dividing structure being further used for dividing the circulation channel, to divide the circulation channel into a plurality of channels.

Abstract: Disclosed in the present invention is an electromagnetic pump, including: a pump body; an inner iron core, including a central cylinder, an axis of the central cylinder basically coinciding with an axis of the electromagnetic pump; a plurality of outer iron cores, disposed at least partially surrounding the inner iron core; a winding, at least partially disposed on the outer iron cores; and a pump channel mechanism, at least partially disposed between the outer iron cores and the inner iron core, where the pump channel mechanism includes: a first pump channel wall, a second pump channel wall, a circulation channel, and a cavity dividing structure, and being used for supporting the first pump channel wall and the second pump channel wall, the cavity dividing structure being further used for dividing the circulation channel, to divide the circulation channel into a plurality of channels.

Abstract: Embodiments of the present invention provide a method for measuring dilution and/or viscosity of lubricating oil in a compressor. The method includes: detecting a pressure difference between an inlet and an outlet of an oil pump in the compressor by pressure difference detection apparatus, and determining the dilution of the lubricating oil and/or the viscosity of the lubricating oil according to the pressure difference detected; a lower end of the oil pump being located in the lubricating oil in the oil sump, a high-pressure side of the pressure difference detection apparatus being connected to the outlet of the oil pump and a low-pressure side of the pressure difference detection apparatus being connected to bottom of the oil sump. Embodiments of the present invention further provides a method for detecting dilution of lubricating oil, a control method and control module for controlling a compressor, and a refrigeration air conditioning system.

Abstract: The present invention provides a building integrated photovoltaic (BIPV) junction box having a housing and a connection assembly disposed within the housing. The housing includes first sidewalls positioned opposite to each other and second sidewalls adjacent and connecting to the two first sidewalls. Additionally, an opening is provided opposite a bottom wall, with the bottom wall connecting the first and second sidewalls. The second sidewalls include extensions that extend beyond a height of the first sidewalls, so that an edge of a solar cell panel is sandwiched between the extensions when the junction box is mounted on the edge of the solar cell panel. The BIPV junction box of the present invention may be applied to the connection of BIPV solar cell modules.