31results about How to "Wide capacity range" patented technology

A centrifugal compressor assembly for compressing refrigerant in a 250-ton capacity or larger chiller system comprising a motor, preferably a compact, high energy density motor or permanent magnet motor, for driving a shaft at a range of sustained operating speeds under the control of a variable speed drive. Another embodiment of the centrifugal compressor assembly comprises a mixed flow impeller and a vaneless diffuser sized such that a final stage compressor operates with an optimal specific speed range for targeted combinations of head and capacity, while a non-final stage compressor operates above the optimum specific speed of the final stage compressor. Another embodiment of the centrifugal compressor assembly comprises an integrated inlet flow conditioning assembly comprising a flow conditioning nose, a plurality of inlet guide vanes and a flow conditioning body that positions inlet guide vanes to condition flow of refrigerant into an impeller to achieve a target approximately constant angle swirl distribution with minimal guide vane turning.

A centrifugal compressor assembly for compressing refrigerant in a 250-ton capacity or larger chiller system comprising a motor, preferably a compact, high energy density motor or permanent magnet motor, for driving a shaft at a range of sustained operating speeds under the control of a variable speed drive. Another embodiment of the centrifugal compressor assembly comprises a mixed flow impeller and a vaneless diffuser sized such that a final stage compressor operates with an optimal specific speed range for targeted combinations of head and capacity, while a non-final stage compressor operates above the optimum specific speed of the final stage compressor. Another embodiment of the centrifugal compressor assembly comprises an integrated inlet flow conditioning assembly comprising a flow conditioning nose, a plurality of inlet guide vanes and a flow conditioning body that positions inlet guide vanes to condition flow of refrigerant into an impeller to achieve a target approximately constant angle swirl distribution with minimal guide vane turning.

A centrifugal compressor assembly for compressing refrigerant in a 250-ton capacity or larger chiller system comprising a motor, preferably a compact, high energy density motor or permanent magnet motor, for driving a shaft at a range of sustained operating speeds under the control of a variable speed drive. Another embodiment of the centrifugal compressor assembly comprises a mixed flow impeller and a vaneless diffuser sized such that a final stage compressor operates with an optimal specific speed range for targeted combinations of head and capacity, while a non-final stage compressor operates above the optimum specific speed of the final stage compressor. Another embodiment of the centrifugal compressor assembly comprises an integrated inlet flow conditioning assembly comprising a flow conditioning nose, a plurality of inlet guide vanes and a flow conditioning body that positions inlet guide vanes to condition flow of refrigerant into an impeller to achieve a target approximately constant angle swirl distribution with minimal guide vane turning.

A coaxial economizer for use in a chiller system comprising an inner housing and an outer housing having a common longitudinal axis. The outer housing has an inlet for receiving a fluid from a upstream compressor stage of a multistage compressor and an outlet for conveying a fluid to a downstream compressor stage of a multistage compressor. A flow chamber forms a fluid flow path about the inner housing. A flash chamber is coterminous with the flow chamber and flashes fluid in a liquid state to a gas state. A flow passage between said flash chamber and the flow chamber for conveying a flashed gas from the flash chamber to the flow chamber; wherein the flashed gas conveyed from the flash chamber and the fluid received from the inlet of the outer housing mix along the fluid flow path toward the outlet of the outer housing.

The present invention is directed to a desuperheater spraying valve assembly. More particularly, the invention provides a new and improved valve assembly, whereby cooling liquid may be controllably injected into a gas or a liquid stream, typically steam, to selectively maintain the gas or liquid at a predetermined temperature level. In a possible embodiment of the present invention, a class V valve assembly is disclosed. It comprises an actuator coupled to a plug with a valve seat in the proximity of said plug. The plug is affixed to an actuator rod which transverses the body of the valve assembly. A spray tube may be affixed to said valve seat and at least one spray nozzle is affixed to a to the spray tube. The plug and said valve seat are conical in shape as to when said plug is inserted into said valve, they form a seal.

A centrifugal compressor assembly for compressing refrigerant in a 250-ton capacity or larger chiller system comprising a motor, preferably a compact, high energy density motor or permanent magnet motor, for driving a shaft at a range of sustained operating speeds under the control of a variable speed drive. Another embodiment of the centrifugal compressor assembly comprises a mixed flow impeller and a vaneless diffuser sized such that a final stage compressor operates with an optimal specific speed range for targeted combinations of head and capacity, while a non-final stage compressor operates above the optimum specific speed of the final stage compressor. Another embodiment of the centrifugal compressor assembly comprises an integrated inlet flow conditioning assembly comprising a flow conditioning nose, a plurality of inlet guide vanes and a flow conditioning body that positions inlet guide vanes to condition flow of refrigerant into an impeller to achieve a target approximately constant angle swirl distribution with minimal guide vane turning.

The invention provides a nano ceramic material composition, and a preparation method thereof. The nano ceramic material composition comprises a nano ceramic material, a nanometer substance additive, and a glass frit sintering aid; the nanometer substance additive comprises at least one ingredient selected from Sm2O3, CeO2, Nd2O3, BiO2, SiO2, MnCO3, and MnO2. The invention also provides a standard capacitor, and a preparation method thereof. The nano ceramic material composition is taken as a medium of the standard capacitor. The standard capacitor prepared by taking the nano ceramic material composition as the medium is high in accurate, low in loss factor, wide in capacity range, and high in stability and reliability.

The invention relates to an intelligent food waste disposer. The intelligent food waste disposer comprises a shell, a grinding disc positioned in the shell, a grinding head arranged on the grinding disc, a driving mechanism for driving the grinding disc, a control mechanism, an induction mechanism and an automatic water outlet mechanism. The control mechanism is respectively in line connection with the driving mechanism, the induction mechanism and the automatic water outlet mechanism. The induction mechanism is arranged at a joint of the shell. Preferably, an EMC module in the control mechanism is in line connection with a power module by a rectifier filter module; the power module is respectively in line connection with the driving mechanism, an MCU module and the automatic water outlet mechanism; the MCU module is in line connection with the induction mechanism; the induction mechanism is a sensor; the driving mechanism is a DC permanent magnet brushless motor; the grinding head is a grinding impact head; the grinding disc is radially provided with an arc barrier strip; and the shell is a streamline shell. The intelligent food waste disposer has the advantages of ingenious design, simple and convenient operation, good grinding effect, lightness, energy saving, safety, durability, low noise and high reliability.

The invention discloses a preparation method of an X8R-property slice type multilayer ceramic capacitor, comprising the following steps of: preparing ceramic slurry, making a dielectric membrane, alternately overprinting inner electrodes and dielectric layers, cutting, discharging glue, sintering, sealing ends and burning ends, wherein the used ceramic slurry in a barium titanate structure also comprises 0.1-5wt% of auxiliary components apart from BaTiO3 as a main component; the inner electrodes are made of nickel inner electrode materials; end electrodes are made of copper end electrode materials; and the sintering temperature is 1220 DEG C-1300 DEG C, and the sintering process comprises a temperature rise section, a high-temperature burning section, a temperature reducing section and a tempering section. As the X8R-property slice type multilayer ceramic capacitor is prepared by using materials of a base metal system for replacing expensive materials of a palladium silver system, theperformance reaches the level of X8R products of the palladium silver system, the upper-limit use temperature of the product reaches +150 DEG C, the change rate of the inner capacity in the temperature range of -55 DEG C-+150 DEG C is not greater than + / -15%, and the ceramic capacitor has high reliability and can effectively replace the X8R products of the palladium silver system; the method greatly reduces the production cost and saves scarce noble metal resources, and the producible capacity range of the product is wider than that of the materials of the palladium silver system.

A control method and device for precise positioning of transformer iron core silicon steel sheets. Five sets of CNC cross slides are installed on the positioning platform. Each set of CNC cross slides includes upper and lower stages. Lead screw, slider and guide rail; the device has the following advantages: 1. The positioning platform mechanism is suitable for a wide range of transformer capacity: 50KVA to 2500KVA. 2. The mechanism of the positioning platform is highly flexible. 3. The positioning platform mechanism transformer core silicon steel sheet has a wide application range: the sheet width can vary from 40mm to 300mm, and the sheet length can vary from 350mm to 1700mm. 4. The positioning platform mechanism can carry out image recognition on the center column, automatically stop the machine if the piece is selected incorrectly, and automate the production process, effectively ensuring the quality and efficiency of the lamination of the transformer core, preventing manual disassembly caused by lamination errors, and realizing continuous, stable production. 5. The structure of the positioning platform is reliable, the technology is mature, and it is easy to maintain.