Patents by Inventor Patric Ananda Balan THOBIAS
Patric Ananda Balan THOBIAS 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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Publication number: 20240085038Abstract: In an embodiment, a blower for a heating, ventilation, and air conditioning system includes a blower wheel and a housing. The blower wheel includes backward-curved blades configured to rotate in a rotational plane. The housing forms an at least hexagonal cross-section around at least a portion of the rotational plane, where the blower wheel is positioned within the housing such that there exists a first distance and a second distance. The first distance is measured radially outward from a center of the blower wheel to a first side of the at least hexagonal cross-section. The second distance is measured radially outward from the center of the blower wheel to a second side of the at least hexagonal cross-section. The second distance forms a an acute angle with the first distance. The first distance and the second distance are unequal and less than a diameter of the blower wheel.Type: ApplicationFiled: November 17, 2023Publication date: March 14, 2024Applicant: Lennox Industries Inc.Inventors: Patric Ananda Balan Thobias, Amit Parsai, Shiliang Wang
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Publication number: 20240085037Abstract: In an embodiment, a blower for a heating, ventilation, and air conditioning system includes a blower wheel and a housing. The blower wheel includes backward-curved blades configured to rotate in a rotational plane. The housing forms an at least hexagonal cross-section around at least a portion of the rotational plane, where the blower wheel is positioned within the housing such that there exists a first distance and a second distance. The first distance is measured radially outward from a center of the blower wheel to a first side of the at least hexagonal cross-section. The second distance is measured radially outward from the center of the blower wheel to a second side of the at least hexagonal cross-section. The second distance forms a an acute angle with the first distance. The first distance and the second distance are unequal and less than a diameter of the blower wheel.Type: ApplicationFiled: November 17, 2023Publication date: March 14, 2024Applicant: Lennox Industries Inc.Inventors: Patric Ananda Balan Thobias, Amit PARSAI, Shiliang WANG
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Patent number: 11885526Abstract: In an embodiment, a blower for a heating, ventilation, and air conditioning system includes a blower wheel and a housing. The blower wheel includes backward-curved blades configured to rotate in a rotational plane. The housing forms an at least hexagonal cross- section around at least a portion of the rotational plane, where the blower wheel is positioned within the housing such that there exists a first distance and a second distance. The first distance is measured radially outward from a center of the blower wheel to a first side of the at least hexagonal cross-section. The second distance is measured radially outward from the center of the blower wheel to a second side of the at least hexagonal cross-section. The second distance forms a an acute angle with the first distance. The first distance and the second distance are unequal and less than a diameter of the blower wheel.Type: GrantFiled: April 14, 2021Date of Patent: January 30, 2024Assignee: Lennox Industries Inc.Inventors: Patric Ananda Balan Thobias, Amit Parsai, Shiliang Wang
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Publication number: 20230358454Abstract: An HVAC system includes a compressor, condenser, and evaporator. A sensor measures a value associated with the refrigerant in the condenser or the evaporator, and a controller is communicatively coupled to the compressor and the sensor. The controller determines, based on an operational history the compressor, that pre-requisite criteria are satisfied for entering a sensor validation mode. After determining the pre-requisite criteria are satisfied, an initial sensor measurement value is determined. Following determining the initial sensor measurement value, the compressor is operated according to a sensor-validation mode. Following operating the compressor according to the sensor-validation mode for at least a minimum time, a current sensor measurement value is determined. The controller determines whether validation criteria are satisfied for the current sensor value. In response to determining that the validation criteria are satisfied, the controller determines that the sensor is validated.Type: ApplicationFiled: July 17, 2023Publication date: November 9, 2023Inventors: Rakesh Goel, Siddarth Rajan, Edward Robinson, Patric Ananda Balan Thobias
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Patent number: 11754326Abstract: An HVAC system includes a compressor, condenser, and evaporator. A sensor measures a value associated with the refrigerant in the condenser or the evaporator, and a controller is communicatively coupled to the compressor and the sensor. The controller determines, based on an operational history the compressor, that pre-requisite criteria are satisfied for entering a sensor validation mode. After determining the pre-requisite criteria are satisfied, an initial sensor measurement value is determined. Following determining the initial sensor measurement value, the compressor is operated according to a sensor-validation mode. Following operating the compressor according to the sensor-validation mode for at least a minimum time, a current sensor measurement value is determined. The controller determines whether validation criteria are satisfied for the current sensor value. In response to determining that the validation criteria are satisfied, the controller determines that the sensor is validated.Type: GrantFiled: September 14, 2022Date of Patent: September 12, 2023Assignee: Lennox Industries Inc.Inventors: Rakesh Goel, Siddarth Rajan, Edward Robinson, Patric Ananda Balan Thobias
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Patent number: 11674708Abstract: A blower for an HVAC system, the blower includes a housing with an intake and an outlet, a fan or blower wheel disposed within the housing and configured to draw air into the housing via the intake and to exhaust air from the housing through the outlet, and an adjustable cutoff plate configured to be moved between at least a first position defining a first cutoff angle and a second position defining a second cutoff angle.Type: GrantFiled: August 22, 2022Date of Patent: June 13, 2023Assignee: Lennox Industries Inc.Inventors: Patric Ananda Balan Thobias, Amit Parsai, Shiliang Wang
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Publication number: 20230128902Abstract: A blower of an HVAC system includes an air inlet, an air outlet, a blower wheel with blades, a motor operable to cause the blower wheel to rotate, and a blower housing within which the blower wheel is positioned. The blower housing includes a top panel, a bottom panel, and a connecting panel. The top panel and the bottom panel are connected to the connecting panel. The top panel includes a curved edge extending from a bottom edge of the connecting panel to a top edge of the connecting panel. An expansion angle of the curved edge of the top panel changes as a function of position along the curved edge of the top panel. The bottom panel may have a shape corresponding to a mirror image to that of the top panel.Type: ApplicationFiled: October 21, 2021Publication date: April 27, 2023Inventors: Patric Ananda Balan Thobias, Vinoth Kumar Settu, Prabhu Prakasam, Sangameshwaran Sadhasivam
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Patent number: 11609046Abstract: An HVAC system includes an evaporator, a first sensor coupled to the evaporator at a first position, and a second sensor operably coupled to the evaporator at a second position. The first sensor monitors a first temperature of the refrigerant flowing in the evaporator at the first position, which is adjacent to the evaporator inlet. The second sensor monitors a second temperature of the refrigerant flowing in the evaporator at the second position, which is downstream from the first position. The system includes a controller, which receives a first signal corresponding to the first temperature and a second signal corresponding to the second temperature. The controller determines, based on the received signals, a temperature difference between the second temperature and the first temperature. In response to determining that the temperature difference is greater than a predefined threshold value, the controller determines that a loss of charge has occurred.Type: GrantFiled: December 14, 2021Date of Patent: March 21, 2023Assignee: Lennox Industries Inc.Inventors: Patric Ananda Balan Thobias, Siddarth Rajan, Rakesh Goel
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Publication number: 20230003429Abstract: An HVAC system includes a compressor, condenser, and evaporator. A sensor measures a value associated with the refrigerant in the condenser or the evaporator, and a controller is communicatively coupled to the compressor and the sensor. The controller determines, based on an operational history the compressor, that pre-requisite criteria are satisfied for entering a sensor validation mode. After determining the pre-requisite criteria are satisfied, an initial sensor measurement value is determined. Following determining the initial sensor measurement value, the compressor is operated according to a sensor-validation mode. Following operating the compressor according to the sensor-validation mode for at least a minimum time, a current sensor measurement value is determined. The controller determines whether validation criteria are satisfied for the current sensor value. In response to determining that the validation criteria are satisfied, the controller determines that the sensor is validated.Type: ApplicationFiled: September 14, 2022Publication date: January 5, 2023Inventors: Rakesh Goel, Siddarth Rajan, Edward Robinson, Patric Ananda Balan Thobias
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Publication number: 20220390139Abstract: A blower for an HVAC system, the blower includes a housing with an intake and an outlet, a fan or blower wheel disposed within the housing and configured to draw air into the housing via the intake and to exhaust air from the housing through the outlet, and an adjustable cutoff plate configured to be moved between at least a first position defining a first cutoff angle and a second position defining a second cutoff angle.Type: ApplicationFiled: August 22, 2022Publication date: December 8, 2022Applicant: Lennox Industries Inc.Inventors: Patric Ananda Balan Thobias, Amit PARSAI, Shiliang WANG
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Patent number: 11480371Abstract: An HVAC system includes a compressor, condenser, and evaporator. A sensor measures a value associated with the refrigerant in the condenser or the evaporator, and a controller is communicatively coupled to the compressor and the sensor. The controller determines, based on an operational history the compressor, that pre-requisite criteria are satisfied for entering a sensor validation mode. After determining the pre-requisite criteria are satisfied, an initial sensor measurement value is determined. Following determining the initial sensor measurement value, the compressor is operated according to a sensor-validation mode. Following operating the compressor according to the sensor-validation mode for at least a minimum time, a current sensor measurement value is determined. The controller determines whether validation criteria are satisfied for the current sensor value. In response to determining that the validation criteria are satisfied, the controller determines that the sensor is validated.Type: GrantFiled: February 28, 2020Date of Patent: October 25, 2022Assignee: Lennox Industries Inc.Inventors: Rakesh Goel, Siddarth Rajan, Edward Robinson, Patric Ananda Balan Thobias
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Publication number: 20220333799Abstract: In an embodiment, a blower for a heating, ventilation, and air conditioning system includes a blower wheel and a housing. The blower wheel includes backward-curved blades configured to rotate in a rotational plane. The housing forms an at least hexagonal cross- section around at least a portion of the rotational plane, where the blower wheel is positioned within the housing such that there exists a first distance and a second distance. The first distance is measured radially outward from a center of the blower wheel to a first side of the at least hexagonal cross-section. The second distance is measured radially outward from the center of the blower wheel to a second side of the at least hexagonal cross-section. The second distance forms a an acute angle with the first distance. The first distance and the second distance are unequal and less than a diameter of the blower wheel.Type: ApplicationFiled: April 14, 2021Publication date: October 20, 2022Applicant: Lennox Industries Inc.Inventors: Patric Ananda Balan Thobias, Amit PARSAI, Shiliang WANG
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Patent number: 11454413Abstract: A blower for an HVAC system, the blower includes a housing with an intake and an outlet, a fan or blower wheel disposed within the housing and configured to draw air into the housing via the intake and to exhaust air from the housing through the outlet, and an adjustable cutoff plate configured to be moved between at least a first position defining a first cutoff angle and a second position defining a second cutoff angle.Type: GrantFiled: November 8, 2019Date of Patent: September 27, 2022Assignee: Lennox Industries Inc.Inventors: Patric Ananda Balan Thobias, Amit Parsai, Shiliang Wang
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Patent number: 11415347Abstract: A compressor system includes a first compressor and a second compressor. A suction equalization line fluidly couples the first compressor and the second compressor. A first branch suction line is fluidly coupled to the first compressor and a second branch suction line is fluidly coupled to the second compressor. A main suction line is fluidly coupled to the first branch suction line and the second branch suction line. An obstruction device is disposed in at least one of the first branch suction line and the second branch suction line. Responsive to deactivation of at least one of the first compressor and the second compressor, the obstruction device is at least partially closed thereby causing prescribed liquid levels in the first compressor and the second compressor during partial-load operation.Type: GrantFiled: November 11, 2019Date of Patent: August 16, 2022Assignee: Lennox Industries Inc.Inventors: Rakesh Goel, Siddarth Rajan, Patric Ananda Balan Thobias, Abdul Rehman
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Publication number: 20220107135Abstract: An HVAC system includes an evaporator, a first sensor coupled to the evaporator at a first position, and a second sensor operably coupled to the evaporator at a second position. The first sensor monitors a first temperature of the refrigerant flowing in the evaporator at the first position, which is adjacent to the evaporator inlet. The second sensor monitors a second temperature of the refrigerant flowing in the evaporator at the second position, which is downstream from the first position. The system includes a controller, which receives a first signal corresponding to the first temperature and a second signal corresponding to the second temperature. The controller determines, based on the received signals, a temperature difference between the second temperature and the first temperature. In response to determining that the temperature difference is greater than a predefined threshold value, the controller determines that a loss of charge has occurred.Type: ApplicationFiled: December 14, 2021Publication date: April 7, 2022Inventors: Patric Ananda Balan Thobias, Siddarth Rajan, Rakesh Goel
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Patent number: 11274862Abstract: A compressor system includes at least two compressors. A suction equalizing tube fluidly couples the at least two compressors. A plumbing assembly fluidly couples to the first compressor and the second compressor. The plumbing assembly comprises an outlet to each compressor of the at least two compressors. A pressure differential between the at least two compressors is created so as to facilitate maintenance of a desired fluid level in the at least two compressors.Type: GrantFiled: June 22, 2020Date of Patent: March 15, 2022Assignee: LENNOX INDUSTRIES INC.Inventors: Patric Ananda Balan Thobias, Abdul Rehman, Rakesh Goel, Siddarth Rajan
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Patent number: 11248849Abstract: An HVAC system includes an evaporator, a first sensor coupled to the evaporator at a first position, and a second sensor operably coupled to the evaporator at a second position. The first sensor monitors a first temperature of the refrigerant flowing in the evaporator at the first position, which is adjacent to the evaporator inlet. The second sensor monitors a second temperature of the refrigerant flowing in the evaporator at the second position, which is downstream from the first position. The system includes a controller, which receives a first signal corresponding to the first temperature and a second signal corresponding to the second temperature. The controller determines, based on the received signals, a temperature difference between the second temperature and the first temperature. In response to determining that the temperature difference is greater than a predefined threshold value, the controller determines that a loss of charge has occurred.Type: GrantFiled: October 15, 2019Date of Patent: February 15, 2022Assignee: Lennox Industries Inc.Inventors: Patric Ananda Balan Thobias, Siddarth Rajan, Rakesh Goel
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Publication number: 20210268874Abstract: An HVAC system includes a compressor, condenser, and evaporator. A sensor measures a value associated with the refrigerant in the condenser or the evaporator, and a controller is communicatively coupled to the compressor and the sensor. The controller determines, based on an operational history the compressor, that pre-requisite criteria are satisfied for entering a sensor validation mode. After determining the pre-requisite criteria are satisfied, an initial sensor measurement value is determined. Following determining the initial sensor measurement value, the compressor is operated according to a sensor-validation mode. Following operating the compressor according to the sensor-validation mode for at least a minimum time, a current sensor measurement value is determined. The controller determines whether validation criteria are satisfied for the current sensor value. In response to determining that the validation criteria are satisfied, the controller determines that the sensor is validated.Type: ApplicationFiled: February 28, 2020Publication date: September 2, 2021Inventors: Rakesh Goel, Siddarth Rajan, Edward Robinson, Patric Ananda Balan Thobias
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Publication number: 20210140672Abstract: A blower for an HVAC system, the blower includes a housing with an intake and an outlet, a fan or blower wheel disposed within the housing and configured to draw air into the housing via the intake and to exhaust air from the housing through the outlet, and an adjustable cutoff plate configured to be moved between at least a first position defining a first cutoff angle and a second position defining a second cutoff angle.Type: ApplicationFiled: November 8, 2019Publication date: May 13, 2021Applicant: Lennox Industries Inc.Inventors: Patric Ananda Balan THOBIAS, Amit PARSAI, Shiliang WANG
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Publication number: 20210108857Abstract: An HVAC system includes an evaporator, a first sensor coupled to the evaporator at a first position, and a second sensor operably coupled to the evaporator at a second position. The first sensor monitors a first temperature of the refrigerant flowing in the evaporator at the first position, which is adjacent to the evaporator inlet. The second sensor monitors a second temperature of the refrigerant flowing in the evaporator at the second position, which is downstream from the first position. The system includes a controller, which receives a first signal corresponding to the first temperature and a second signal corresponding to the second temperature. The controller determines, based on the received signals, a temperature difference between the second temperature and the first temperature. In response to determining that the temperature difference is greater than a predefined threshold value, the controller determines that a loss of charge has occurred.Type: ApplicationFiled: October 15, 2019Publication date: April 15, 2021Inventors: Patric Ananda Balan Thobias, Siddarth Rajan, Rakesh Goel