Multichannel heat exchanger with dissimilar flow
    2.
    发明授权
    Multichannel heat exchanger with dissimilar flow 有权
    具有不同流量的多通道换热器

    公开(公告)号:US08234881B2

    公开(公告)日:2012-08-07

    申请号:US12200471

    申请日:2008-08-28

    IPC分类号: F25B39/02

    摘要: Heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems and heat exchangers are provided that include multichannel tube configurations designed to promote flow of refrigerant within the multichannel tubes near the edges of the tubes that are contacted first by an external fluid. The tube configurations include flow paths of varying cross-sections, spacings, and sizes. Flow control mechanisms, such as inserts, blocking plates, sleeves, crimped sections, and crushed sections, may be employed with the flow paths to favor flow near the edges of the tubes that are contacted first by an external fluid.

    摘要翻译: 提供加热,通风,空调和制冷(HVAC&R)系统和热交换器,其包括多通道管构造,其被设计成促进多通道管内靠近由外部流体接触的管边缘的制冷剂流动。 管构造包括具有不同横截面,间距和尺寸的流动路径。 可以使用流动控制机构,例如插入件,阻挡板,套筒,卷曲部分和压碎部分,其中流动路径有利于流体边缘附近的流动,其首先被外部流体接触。

    SCREW CHILLER ECONOMIZER SYSTEM
    3.
    发明申请
    SCREW CHILLER ECONOMIZER SYSTEM 审中-公开
    螺杆冷却器经济系统

    公开(公告)号:US20120103005A1

    公开(公告)日:2012-05-03

    申请号:US13285859

    申请日:2011-10-31

    IPC分类号: F25B1/00 F25D11/00

    摘要: Screw chillers have economizer systems that include a low pressure economizer and a high pressure economizer. According to certain embodiments, the low pressure economizer includes a flash tank, an expansion device and a flow control valve while the high pressure economizer includes a heat exchanger and an expansion device. The screw chillers also include a screw compressor that compresses refrigerant. The screw compressor includes a low pressure economizer port designed to receive lower pressure refrigerant from the flash tank within the low pressure economizer and a high pressure economizer port designed to receive higher pressure refrigerant from the heat exchanger within the higher pressure economizer. The screw compressor is designed to compress the refrigerant received from the evaporator, the refrigerant received through the low pressure economizer port, and the refrigerant received through the high pressure economizer port and to discharge the refrigerant through a common discharge.

    摘要翻译: 螺杆式冷水机组具有节能器系统,包括低压节能器和高压节能器。 根据某些实施例,低压节能器包括闪蒸罐,膨胀装置和流量控制阀,而高压节能器包括热交换器和膨胀装置。 螺杆式制冷机还包括压缩制冷剂的螺杆式压缩机。 螺杆式压缩机包括低压节能器端口,设计用于从低压节能器内的闪蒸罐接收较低压力的制冷剂,以及设计成在高压节能器内从热交换器接收较高压力的制冷剂的高压节能器口。 螺杆式压缩机被设计成压缩从蒸发器接收的制冷剂,通过低压节能器接收的制冷剂,以及通过高压节能器端口接收的制冷剂,并通过共同的排放来排出制冷剂。

    CONTROL SYSTEM FOR OPERATING CONDENSER FANS
    5.
    发明申请
    CONTROL SYSTEM FOR OPERATING CONDENSER FANS 有权
    冷凝器风机操作控制系统

    公开(公告)号:US20110083454A1

    公开(公告)日:2011-04-14

    申请号:US12751475

    申请日:2010-03-31

    IPC分类号: F25B49/02

    摘要: Methods and systems for controlling the operation of condenser fans are provided. At most discharge pressures, the operation of the condenser fans may be controlled based on a capacity of the compressor system. To adjust operation of the condenser fans, the speed of the fans and/or the number or operational fans may be adjusted. The control of the condenser fans based on compressor system capacity may be overridden at compressor discharge pressures that rise above a high pressure level and fall below a low pressure level. At the high and low discharge pressures, the fan speed and/or number of operating fans may be adjusted based solely on the discharge pressure rather than on the compressor system capacity.

    摘要翻译: 提供了控制冷凝器风扇运行的方法和系统。 在大多数排放压力下,可以基于压缩机系统的容量来控制冷凝器风扇的操作。 为了调整冷凝器风扇的运行,可以调节风扇和/或数量或操作风扇的速度。 基于压缩机系统容量的冷凝器风扇的控制可以在压缩机排出压力超过高压力水平并降低到低压力水平的情况下被超控。 在高和低排放压力下,风扇速度和/或操作风扇数量可以仅基于排气压力而不是压缩机系统容量进行调整。

    FREE COOLING REFRIGERATION SYSTEM
    6.
    发明申请
    FREE COOLING REFRIGERATION SYSTEM 审中-公开
    免费冷却制冷系统

    公开(公告)号:US20100242532A1

    公开(公告)日:2010-09-30

    申请号:US12726895

    申请日:2010-03-18

    IPC分类号: F25B1/00 F25B41/00

    摘要: A refrigeration system includes a chiller with an integrated free cooling system and refrigeration system. In certain embodiments, the chiller may be a single package unit with all equipment housed within the same support frame. The chiller may generally include three modes of operation: a first mode that employs free cooling, a second mode that employs free cooling and implements a refrigeration cycle, and a third mode that uses the free cooling system to remove heat from the refrigeration system. A heat exchanger may be shared between the free cooling system and the refrigeration system to transfer heat from the refrigeration system to the free cooling system.

    摘要翻译: 制冷系统包括具有集成的自由冷却系统和制冷系统的冷却器。 在某些实施例中,冷却器可以是单个包装单元,其中所有设备都容纳在相同的支撑框架内。 冷冻机通常可以包括三种操作模式:采用自由冷却的第一模式,采用自由冷却和实现制冷循环的第二模式,以及使用自由冷却系统从制冷系统中除去热量的第三模式。 可以在自由冷却系统和制冷系统之间共享热交换器,以将热量从制冷系统传递到自由冷却系统。

    MULTICHANNEL HEAT EXCHANGER
    8.
    发明申请
    MULTICHANNEL HEAT EXCHANGER 有权
    多通道热交换器

    公开(公告)号:US20090025409A1

    公开(公告)日:2009-01-29

    申请号:US12180017

    申请日:2008-07-25

    IPC分类号: F25D17/04 G05D23/00 F25B41/00

    摘要: A heating, ventilation, air conditioning and refrigeration (HVAC&R) system having a compressor, a heat exchanger, an expansion valve, and a multichannel heat exchanger connected in a closed refrigerant loop. The multichannel heat exchanger has at least two fluid flow paths cooled by a flow of air from an air-moving device through the multichannel heat exchanger. Each of the at least two fluid flow paths have an inlet and an outlet in communication there between. The multichannel heat exchanger also has at least one flow regulator disposed in at least one outlet to regulate through at least one fluid flow path in response to the air flow through the heat exchanger to achieve a substantially equal temperature of a fluid flowing in the at least two flow paths.

    摘要翻译: 具有压缩机,热交换器,膨胀阀和连接在闭合制冷剂回路中的多通道热交换器的加热,通风,空调和制冷(HVAC&R)系统。 多通道热交换器具有由空气流动装置通过多通道热交换器的空气流冷却的至少两个流体流动路径。 所述至少两个流体流动路径中的每一个具有在其间连通的入口和出口。 多通道热交换器还具有设置在至少一个出口中的至少一个流量调节器,以响应于通过热交换器的空气流动来调节至少一个流体流动路径,以实现至少在至少一个流体中流动的流体的基本相等的温度 两条流路。

    Tandem refrigeration system
    9.
    发明授权
    Tandem refrigeration system 失效
    串联制冷系统

    公开(公告)号:US5406805A

    公开(公告)日:1995-04-18

    申请号:US150996

    申请日:1993-11-12

    摘要: A refrigeration system for providing cooling to two or more compartments utilizing respective first and second evaporators. During the initial operation of a cooling cycle, the refrigerant is utilized for cooling the compartment (such as a fresh food compartment) which is to be maintained at a higher temperature as compared with another compartment (such as a freezer compartment). Cooling can thus be achieved by operating a fan in the fresh food compartment, even where the refrigeration system has not yet reached steady state after the compressor initially begins operating. After cooling has been achieved in the fresh food compartment, the refrigerant in the system has reached a state suitable for cooling of the freezer compartment, and the fan for the freezer evaporator is turned on while the fan for the fresh food compartment is turned off. As a result, a relatively simply refrigeration system is provided which is more efficient than conventional arrangements, particularly single-stage refrigeration systems. A defrosting cycle can also be accomplished with the fresh food fan operating, and with the freezer evaporator fan and compressor off. As the refrigerant evaporates in the fresh food evaporator during defrosting, a thermosiphon effect results in an exchange of refrigerant between the evaporators such that defrosting is accomplished without requiring a defrost heater.

    摘要翻译: 一种用于使用相应的第一和第二蒸发器向两个或更多个隔室提供冷却的制冷系统。 在冷却循环的初始操作期间,与其他隔室(例如冷冻室)相比,制冷剂用于冷却要保持在较高温度的隔室(例如新鲜食品室)。 因此,即使在压缩机开始运行后制冷系统尚未达到稳定状态,也可以通过在新鲜食品室中操作风扇来实现冷却。 在冷藏室中已经达到冷却后,系统中的制冷剂已达到适合于冷冻室的冷却状态,并且用于冷藏室蒸发器的风扇被打开,而用于新鲜食物室的风扇被关闭。 结果,提供了相对简单的制冷系统,其比常规布置,特别是单级制冷系统更有效。 除霜循环还可以通过新鲜的食物风扇进行操作,并将冷藏室的蒸发器风扇和压缩机关闭。 由于制冷剂在除霜期间在新鲜食物蒸发器中蒸发,热虹吸效应导致蒸发器之间的制冷剂交换,使得除霜完成而不需要除霜加热器。