Patents by Inventor Huijun Zhao
Huijun Zhao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11976652Abstract: Disclosed are a method and a device for balancing crankshaft deformation e, a crankshaft with counterweights determined according to the method, and a scroll compressor using the crankshaft. The method includes: determining a component centrifugal force required by a counterweight to overcome the crankshaft deformation caused by both an orbiting scroll centrifugal force and a gas force; and determining the counterweight according to the component centrifugal force. The counterweight is arranged on the crankshaft.Type: GrantFiled: December 26, 2019Date of Patent: May 7, 2024Assignee: Gree Green Refrigeration Technology Center Co., Ltd. of ZhuhaiInventors: Huijun Wei, Gang Lv, Caixia Shan, Shuanglai Liu, Qi Fang, Peng Ma, Yuchen Zhao
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Publication number: 20240111062Abstract: Disclosed is a polarization fusion orientation method for an occluded environment, which comprises: acquiring a sky polarization image through a polarization camera first, then taking a heading angle output by an E-vector polarization orientation method as a state quantity, taking a heading angle output by a symmetry axis polarization orientation method as an observed quantity, realizing heading angle fusion through a multi-frequency variational Bayesian strong tracking cubature Kalman filter (MF-VBSTCKF), and respectively selecting different methods for a sampling position and a sampling interval period to update an optimal heading angle. The method solves the problem that high-precision and high-robustness heading angle measurement of polarized light cannot be realized in the occluded environment, can improve the precision and robustness of a polarized light orientation method in the occluded environment, and ensures high-frequency output of the heading angle at the same time.Type: ApplicationFiled: June 12, 2023Publication date: April 4, 2024Inventors: Chong SHEN, Huijun ZHAO, Jun LIU, Jun TANG, Huiliang CAO, Chenguang WANG
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Publication number: 20240076586Abstract: The present disclosure provides a formula of a remover reagent for a cured silicone sealant and a method using the same. The remover reagent is prepared from an acid catalyst and a solvent each having a high boiling point and a high flash point. The acid catalyst is benzenesulfonic acid or alkylbenzenesulfonic acid. The solvent is mineral oil and/or silicone oil. The cured silicone sealant is first soaked with the remover reagent for 30 to 120 min, and then baked at a high temperature of 80 to 120° C. for 10 min or above into debris or powder, whereby the cured silicone sealant with a thickness of 10 mm or above can be removed. Moreover, the remover reagent has the advantages of readily available raw materials, high safety, environmentally friendliness, convenient preparation and good sealant removal effect, and thus, has good application prospects.Type: ApplicationFiled: September 1, 2023Publication date: March 7, 2024Inventors: Cheng FU, Shengyu GE, Huijun GUO, Liang ZHAO
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Publication number: 20230080563Abstract: A nickel-based MOF film photocatalyst grown in-situ on a foamed nickel surface, a preparation method therefor, and an application thereof. The nickel-based MOF film photocatalyst grown in-situ on a foamed nickel surface is prepared by first immersing foamed nickel in a diluted acid and performing ultrasonic processing, then cleaning the foamed nickel with deionized water, and drying the foamed nickel to obtain surface-activated foamed nickel; immersing the surface-activated nickel foam in a mixture of an imidazole compound, sodium formate, and a solvent and reacting at 100° C. to 180° C. to obtain an unactivated nickel-based MOFs film on the surface of the foamed nickel, and after cooling to room temperature, removing same and soaking in an organic solvent to activate, and then drying the obtained product.Type: ApplicationFiled: February 2, 2021Publication date: March 16, 2023Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGYInventors: Hongli LIU, Xin DING, Taicheng AN, Guiying LI, Huijun ZHAO
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Patent number: 11313821Abstract: A sensor for the in situ detection of a target chemical species, comprising a gas permeable membrane having a sampling side and an opposing analytical side, wherein the sampling side of the membrane is capable of receiving a sample and the membrane is permeable to target chemical species present in the sample. A weak acid or a weak base is in contact with the analytical side of the membrane, and a conductivity detector is in contact with the weak acid or weak base. In use, target chemical species present in the sample permeate through the membrane and react with the weak acid or weak base, producing ionic species and changing the conductivity.Type: GrantFiled: June 28, 2018Date of Patent: April 26, 2022Assignee: GRIFFITH UNIVERSITYInventor: Huijun Zhao
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Publication number: 20200124554Abstract: A sensor for the in situ detection of a target chemical species, comprising a gas permeable membrane having a sampling side and an opposing analytical side, wherein the sampling side of the membrane is capable of receiving a sample and the membrane is permeable to target chemical species present in the sample. A weak acid or a weak base is in contact with the analytical side of the membrane, and a conductivity detector is in contact with the weak acid or weak base. In use, target chemical species present in the sample permeate through the membrane and react with the weak acid or weak base, producing ionic species and changing the conductivity.Type: ApplicationFiled: June 28, 2018Publication date: April 23, 2020Applicant: GRIFFITH UNIVERSITYInventor: Huijun Zhao
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Patent number: 8673810Abstract: Methods of fabricating nano particulate Titanium dioxide photocatalysts onto a conducting substrate are disclosed. The methods include hydrothermal fabrications with heat treatment steps to increase the crystallinity and photoactivity of the titanium dioxide layers.Type: GrantFiled: November 14, 2008Date of Patent: March 18, 2014Assignee: Aqua Diagnostic Pty Ltd.Inventors: Huijun Zhao, Mark Imisides, Shanqing Zhang
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Publication number: 20120010068Abstract: Methods of fabricating nano particulate Titanium dioxide photocatalysts onto a conducting substrate are disclosed. The methods include hydrothermal fabrications with heat treatment steps to increase the crystallinity and photoactivity of the titanium dioxide layers.Type: ApplicationFiled: November 14, 2008Publication date: January 12, 2012Applicant: Aqua Diagnostic Pty Ltd Level 1Inventors: Huijun Zhao, Mark Imisides, Shanqing Zhang
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Publication number: 20120000794Abstract: A method of determining chemical oxygen demand (COD) of a water sample, which is useful in an on-line configuration comprising the steps of a) applying a constant potential bias to a photoelectrochemical cell, having a photoactive working electrode, optionally a reference electrode and a counter electrode, and containing a supporting electrolyte solution; b) illuminating the working electrode with a light source and recording the background photocurrent produced at the working electrode from the supporting electrolyte solution; c) adding a water sample, to be analysed, to the photoelectrochemical cell; d) illuminating the working electrode with a light source and recording the hydro dynamic photocurrent produced under continuous flow of the water to be analysed; e) determining the chemical oxygen demand of the water sample using a number of different formulae. The applied potential is preferably from ?0.4 to +O.8V more preferably about +0.3V.Type: ApplicationFiled: December 21, 2007Publication date: January 5, 2012Applicant: AQUA DIAGNOSTIC PTY LTDInventors: Huijun Zhao, Shanqing Zhang, Nicholas George Mathiou
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Publication number: 20110073495Abstract: A method of determining chemical oxygen demand (COD) of a water sample which is useful in a probe configuration includes the steps of a) applying a constant potential bias to a photoelectmchemical cell, having a photoactive working electrode optionally a reference electrode and a counter electrode, and containing a supporting electrolyte solution; b) illuminating the working electrode with a light source and recording the background photocurrent produced at the working electrode from the supporting electrolyte solution; c) adding a water sample, to be analysed, to the photoelectrochemical cell; d) illuminating the working electrode with a light source and recording the steady state photocurrent produced with the sample; e) determining the chemical oxygen demand of the water sample using the formula (I): where ? is the Nernst diffusion layer thickness, D is the diffusion coefficient, A is the electrode area, F the Faraday constant and iss the steady state photocurrent.Type: ApplicationFiled: December 21, 2007Publication date: March 31, 2011Applicant: AQUA DIAGNOSTIC PTY LTDInventors: Huijun Zhao, Shanqing Zhang
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Patent number: 7759125Abstract: A photoelectrochemical assay apparatus and method for determining chemical oxygen demand (COD) of a water sample is described. The photoelectrochemical assay comprises: a) a measuring cell for holding a sample to be analysed b) a titanium dioxide nanoparticle photoelectric working electrode and a counter electrode disposed in said cell, c) a UV light source adapted to illuminate the photoelectric working electrode d) control means to control the illumination of the working electrode e) potential measuring means to measure the electrical potential at the working and counter electrodes f) analysis means to derive a measure of oxygen demand from the measurements made by the potential measuring means.Type: GrantFiled: August 11, 2009Date of Patent: July 20, 2010Assignee: Aqua Diagnostic Pty LtdInventor: Huijun Zhao
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Publication number: 20100032282Abstract: A photoelectrochemical assay apparatus and method for determining chemical oxygen demand (COD) of a water sample is described. The photoelectrochemical assay comprises: a) a measuring cell for holding a sample to be analysed b) a titanium dioxide nanoparticle photoelectric working electrode and a counter electrode disposed in said cell, c) a UV light source adapted to illuminate the photoelectric working electrode d) control means to control the illumination of the working electrode e) potential measuring means to measure the electrical potential at the working and counter electrodes f) analysis means to derive a measure of oxygen demand from the measurements made by the potential measuring means.Type: ApplicationFiled: August 11, 2009Publication date: February 11, 2010Applicant: Aqua Diagnostic Pty LtdInventor: Huijun ZHAO
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Publication number: 20090283423Abstract: A method of determining chemical oxygen demand in water samples containing chloride ions above 0.5 mM concentration in which the samples are diluted and a known quantity of an organic substance is added to the diluted sample which is the subjected to an assay by a photoelectrochemical method using a titanium dioxide nanoparticulate semiconductor electrode and measuring the photo current produced until a stable value is reached and then using the difference between the initial and stable photocurrents as a measure of the chemical oxygen demand. An alternative method involves determining chemical oxygen demand in water samples containing chloride ions by measuring the chlorine content and measuring chemical oxygen demand by a photoelectrochemical method using a titanium dioxide nanoparticulate semiconductor electrode and adjusting the chemical oxygen demand measurement using the chlorine measurement.Type: ApplicationFiled: August 10, 2006Publication date: November 19, 2009Applicant: Aqua Diagnostic Pty LtdInventors: Huijun Zhao, Shanqing Zhang
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Patent number: 7598086Abstract: A photoelectrochemical assay apparatus for determining chemical oxygen demand (COD) of a water sample which consists of a) a measuring cell for holding a sample to be analysed b) a titanium dioxide nanoparticle photoelectric working electrode and a counter electrode disposed in said cell, c) a UV light source adapted to illuminate the photoelectric working electrode d) control means to control the illumination of the working electrode e) potential measuring means to measure the electrical potential at the working and counter electrodes f) analysis means to derive a measure of oxygen demand from the measurements made by the potential measuring means.Type: GrantFiled: November 10, 2005Date of Patent: October 6, 2009Assignee: Aqua Diagnostic Pty LtdInventor: Huijun Zhao
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Publication number: 20060240558Abstract: A photoelectrochemical assay apparatus for determining chemical oxygen demand (COD) of a water sample which consists of a) a measuring cell for holding a sample to be analysed b) a titanium dioxide nanoparticle photoelectric working electrode and a counter electrode disposed in said cell, c) a UV light source adapted to illuminate the photoelectric working electrode d) control means to control the illumination of the working electrode e) potential measuring means to measure the electrical potential at the working and counter electrodes f) analysis means to derive a measure of oxygen demand from the measurements made by the potential measuring means.Type: ApplicationFiled: November 10, 2005Publication date: October 26, 2006Applicant: Aqua Diagnostic Pty LtdInventor: Huijun Zhao
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Publication number: 20060205083Abstract: A method for determining chemical oxygen demand of a water sample comprises the steps of (a) applying a constant potential bias to a photoelectrochemical cell, having a photoactive working electrode (e.g. a layer of titanium dioxide nanoparticles coated on an inert conductive substrate) and a counter electrode, and containing a supporting electrolyte solution; (b) illuminating the working electrode with a light source and recording the background photocurrent produced at the working electrode from the supporting electrolyte solution; (c) adding a water sample, to be analyzed, to the photoelectrochemical cell; (d) illuminating the working electrode with a light source and recording the total photoelectrocurrent produced with the sample; (e) determining the chemical oxygen demand according to the type (exhaustive or non-exhaustive) of degradation conditions employed.Type: ApplicationFiled: April 5, 2004Publication date: September 14, 2006Inventor: Huijun Zhao
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Publication number: 20040008859Abstract: The present invention provides a loudspeaker having double symmetric magnet-circuits, double voice coils and double dampers. The loudspeaker comprises a diaphragm holder, a diaphragm, an upper and a lower dampers, an annular steel magnet, a core, voice coils, an upper and a lower plate. Wherein the core is a steel magnet, the polarities of its upper and lower ends being opposite to those of the upper and lower ends of the annular steel magnet, so are two symmetric and parallel magnet-circuits formed. Thus the intensity of the magnet field in the two magnet gaps became very high because of the two magnet sources, so is the high power loudspeaker able to work normally.Type: ApplicationFiled: June 20, 2003Publication date: January 15, 2004Applicant: Speaker Electronic (Jiashan) Co., Ltd.Inventor: Huijun Zhao