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公开(公告)号：US20140223936A1
公开(公告)日：2014-08-14
申请号：US14347521
申请日：2012-09-26
发明人： Jonathan Phillip Hartfield , Harry Kenneth Ring , Michael William Groen , Stephen Anthony Kujak , Ronald Maurice Cosby II
CPC分类号： F25B39/028 , F25B39/02 , F25B2339/0242 , F28D3/02 , F28D3/04 , F28D21/0017 , F28F9/0131 , F28F13/02 , F28F13/182
摘要： Generally, management of refrigerant in an evaporator of an HVAC chiller is described. Methods, systems, and apparatuses to manage refrigerant in an evaporator can include one or combination of the following approaches: (1) by use of a refrigerant displacement array to physically prevent refrigerant from residing where the array is positioned; (2) by control of the interstitial velocity of refrigerant flow within the volume of the shell of an evaporator; (3) by a phase biased distribution of the refrigerant mixture, so that a gaseous portion is uniformly distributed into the evaporator shell, while liquid refrigerant and oil is distributed into the evaporator shell at a designated area; and (4) by preventing or reducing the occurrence of foaming inside the evaporator through anti-foaming surfaces, such as by the use of refrigerant phobic and lubricant phobic material(s). Refrigerant management can in turn improve the thermal performance and overall efficiency of the evaporator.
摘要翻译： 通常，对HVAC冷冻机的蒸发器中的制冷剂的管理进行说明。 用于管理蒸发器中的制冷剂的方法，系统和装置可以包括以下方法中的一种或组合：（1）通过使用制冷剂排量阵列来物理地防止制冷剂驻留在阵列所在的位置; （2）通过控制在蒸发器壳体内的制冷剂流动的间隙速度; （3）通过制冷剂混合物的相位偏置分布，使得气体部分均匀地分布到蒸发器壳体中，同时液体制冷剂和油在指定区域分配到蒸发器壳体中; 和（4）通过防止或减少蒸发器内通过消泡表面发生的泡沫，例如通过使用制冷剂的恐惧症和润滑剂的恐怖物质。 制冷剂管理可以改善蒸发器的热性能和整体效率。
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公开(公告)号：US09903626B2
公开(公告)日：2018-02-27
申请号：US15383291
申请日：2016-12-19
CPC分类号： F25B49/02 , F25B31/004 , F25B39/00 , F25B39/02 , F25B40/00 , F25B45/00 , F25B2339/024 , F25B2339/0242 , F25B2339/046 , F25B2400/16 , F25B2600/2513 , F25B2600/2515 , F25B2700/04 , Y10T137/5762
摘要： A spill over tank for an evaporator of a HVAC system may be configured to receive a refrigerant spilled over from the evaporator. The spill over tank may be configured to have an outlet that directs the refrigerant in the spill over tank out of the spill over tank. The refrigerant may flow through the outlet back to a compressor of the HVAC system. The spill over tank may be equipped with a refrigerant level sensor configured to measure a refrigerant level in the spill over tank. The measured refrigerant level in the spill over tank may be used to control and/or maintain a refrigerant level in the evaporator, and/or may be used to control a return refrigerant flow into the compressor of the HVAC system so as to manage an oil return to the compressor.
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公开(公告)号：US10914525B2
公开(公告)日：2021-02-09
申请号：US16188714
申请日：2018-11-13
摘要： A heat exchanger, for example a shell and tube flooded evaporator, has a refrigerant distributor that is positioned at an angle between the bottom of the shell and the sides of the shell, and includes an inlet that is welded to an inlet piping, where the inlet and inlet piping are in fluid communication with the refrigerant distributor, and are in a generally corresponding position orientation. Tubes of a tube bundles may extend proximate the bottom of the shell.
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公开(公告)号：US10859297B2
公开(公告)日：2020-12-08
申请号：US15006950
申请日：2016-01-26
摘要： Generally, management of refrigerant in an evaporator of an HVAC chiller is described. Methods, systems, and apparatuses to manage refrigerant in an evaporator can include one or combination of the following approaches: (1) by use a refrigerant displacement array to physically prevent refrigerant from residing where the array is positioned; (2) by control of the interstitial velocity of refrigerant flow within the volume of the shell of an evaporator; (3) by a phase biased distribution of the refrigerant mixture, so that a gaseous portion is uniformly distributed into the evaporator shell, while liquid refrigerant and oil is distributed into the evaporator shell at a designated area; and (4) by preventing or reducing the occurrence of foaming inside the evaporator through anti-foaming surfaces, such as by the use of refrigerant phobic and lubricant phobic material(s). Refrigerant management can in turn improve the thermal performance and overall efficiency of the evaporator.
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公开(公告)号：US20210088262A1
公开(公告)日：2021-03-25
申请号：US17114013
申请日：2020-12-07
发明人： Jon Phillip Hartfield , Harry Kenneth Ring , Michael William Groen , Stephen Anthony Kujak , Ronald Maurice Cosby, II
摘要： Generally, management of refrigerant in an evaporator of an HVAC chiller is described. Methods, systems, and apparatuses to manage refrigerant in an evaporator can include one or combination of the following approaches: (1) by use of a refrigerant displacement array to physically prevent refrigerant from residing where the array is positioned (2) by control of the interstitial velocity of refrigerant flow within the volume of the shell of an evaporator; (3) by a phase biased distribution of the refrigerant mixture, so that a gaseous portion is uniformly distributed into the evaporator shell, while liquid refrigerant and oil is distributed into the evaporator shell at a designated area; and (4) by preventing or reducing the occurrence of foaming inside the evaporator through anti-foaming surfaces, such as by the use of refrigerant phobic and lubricant phobic material(s). Refrigerant management can in turn improve the thermal performance and overall efficiency of the evaporator.
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公开(公告)号：US10697717B2
公开(公告)日：2020-06-30
申请号：US14434986
申请日：2012-10-10
摘要： Embodiments of a water head for an evaporator in a HVAC system are provided. The water head may have a fluid entrance and a fluid exit in a side-by-side arrangement on one end of the water head, and a distribution chamber and a collection chamber in a top-down arrangement on opposite side of the water head. The distribution chamber and the collection chamber are configured to be in fluid communication with inlets and outlets of a heat exchanging tube bundle respectively. The distribution chamber and the collection chamber can be configured to have continuously smooth surface contours to help reduce pressure drop and fluid separation, and promote advantageous distribution of the process fluid among heat exchanging tubes when a process fluid flows between the fluid entrance or the fluid exit, and the distribution chamber or the collection chamber respectively.
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公开(公告)号：US09677795B2
公开(公告)日：2017-06-13
申请号：US14654778
申请日：2013-12-20
CPC分类号： F25B39/00 , F25B31/004 , F25B39/02 , F25B39/04 , F25B40/02 , F25B49/00 , F25B49/02 , F25B2339/046 , F25B2600/05 , F25B2600/2513 , F25B2700/04 , F25B2700/21175
摘要： Methods and systems to manage refrigerant levels in a chiller system are provided. An evaporator of the chiller system may be configured to have a spill over port allowing oil containing refrigerant to spill over through the spill over port. The spill over port may be positioned at a place that corresponds to a desired refrigerant level in the evaporator. The spill over refrigerant may be directed into a heat exchanger that is configured to substantially vaporize refrigerant of the spill over refrigerant to a slightly superheat temperature. A method of maintaining a proper refrigerant level in the evaporator may include regulating a refrigerant flow to the evaporator so that the vaporized refrigerant of the spill over refrigerant is maintained at the slightly superheat temperature.
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公开(公告)号：US12092378B2
公开(公告)日：2024-09-17
申请号：US17114013
申请日：2020-12-07
发明人： Jon Phillip Hartfield , Harry Kenneth Ring , Michael William Groen , Stephen Anthony Kujak , Ronald Maurice Cosby, II
CPC分类号： F25B39/028 , F25B39/02 , F28D3/02 , F28D3/04 , F28D21/0017 , F28F9/0131 , F28F13/02 , F28F13/182 , F25B2339/0242
摘要： Generally, management of refrigerant in an evaporator of an HVAC chiller is described. Methods, systems, and apparatuses to manage refrigerant in an evaporator can include one or combination of the following approaches: (1) by use of a refrigerant displacement array to physically prevent refrigerant from residing where the array is positioned (2) by control of the interstitial velocity of refrigerant flow within the volume of the shell of an evaporator; (3) by a phase biased distribution of the refrigerant mixture, so that a gaseous portion is uniformly distributed into the evaporator shell, while liquid refrigerant and oil is distributed into the evaporator shell at a designated area; and (4) by preventing or reducing the occurrence of foaming inside the evaporator through anti-foaming surfaces, such as by the use of refrigerant phobic and lubricant phobic material(s). Refrigerant management can in turn improve the thermal performance and overall efficiency of the evaporator.
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公开(公告)号：US10422559B2
公开(公告)日：2019-09-24
申请号：US15616656
申请日：2017-06-07
摘要： Methods and systems to manage refrigerant levels in a chiller system are provided. An evaporator of the chiller system may be configured to have a spill over port allowing oil containing refrigerant to spill over through the spill over port. The spill over port may be positioned at a place that corresponds to a desired refrigerant level in the evaporator. The spill over refrigerant may be directed into a heat exchanger that is configured to substantially vaporize refrigerant of the spill over refrigerant to a slightly superheat temperature. A method of maintaining a proper refrigerant level in the evaporator may include regulating a refrigerant flow to the evaporator so that the vaporized refrigerant of the spill over refrigerant is maintained at the slightly superheat temperature.
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10.发明授权公开(公告)号：US10126066B2
公开(公告)日：2018-11-13
申请号：US14777330
申请日：2014-03-14
摘要： A heat exchanger, for example a shell and tube flooded evaporator, has a refrigerant distributor that is positioned at an angle between the bottom of the shell and the sides of the shell, and includes an inlet that is welded to an inlet piping, where the inlet and inlet piping are in fluid communication with the refrigerant distributor, and are in a generally corresponding position orientation. Tubes of a tube bundles may extend proximate the bottom of the shell.
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