公开(公告)号：US5782100A

公开(公告)日：1998-07-21

申请号：US819348

申请日：1997-03-18

申请人： Stephen W. Wilson

发明人： Stephen W. Wilson

IPC分类号： B65G17/12 ,  F25B45/00 ,  G01F13/00 ,  G01F22/02

CPC分类号： B65G17/123 ,  F25B45/00 ,  G01F13/00 ,  G01F22/02 ,  B65G2201/02 ,  F25B2345/001 ,  F25B2345/005

摘要： A refrigerant metering charge board that accurately meters a refrigerant and an associated synthetic compressor oil into a product, preferably a refrigerator, is provided. Metering is accomplished by way of servo motors coupled to ball screws which are in turn connected to hydraulic cylinders. Calibration of the refrigerant, preferably R134a, is maintained using a temperature sensor, a programmable logic controller (PLC) and a density/temperature equation that has been empirically fit to saturation data. The preferred equation is a modified Benedict-Webb-Ruben (MBWR) equation of state. The refrigerant charge amounts are entered into the PLC using either a fixed bar code scanner or a hand-held bar code scanner that reads a bar code on the refrigerator. An operator interface, preferably a touch-screen display is also provided. A charging tool to connect to the product for inserting the refrigerant is located in a chargeable automatic connect/disconnect mechanism (ACDM) which allows for automatic operation on a assembly line.

摘要翻译： 提供了将制冷剂和相关联的合成压缩机油精确地计量到产品，优选冰箱中的制冷剂计量充电板。 通过联接到滚珠丝杠的伺服马达来完成测量，滚珠丝杠又连接到液压缸。 使用温度传感器，可编程逻辑控制器（PLC）和经验地适合饱和度数据的密度/温度方程来维持制冷剂的校准，优选R134a。 优选的方程式是修改的本尼迪克特 - 韦伯 - 鲁本（MBWR）状态方程。 使用固定条形码扫描器或读取冰箱条形码的手持式条形码扫描器将制冷剂充注量输入PLC。 还提供了操作界面，优选地是触摸屏显示器。 用于连接到用于插入制冷剂的产品的充电工具位于可充电的自动连接/断开机构（ACDM）中，其允许在装配线上自动操作。

公开(公告)号：US5606867A

公开(公告)日：1997-03-04

申请号：US539511

申请日：1995-10-06

申请人： Masao Mangyo ,  Takao Kawashima ,  Yuji Mori

发明人： Masao Mangyo ,  Takao Kawashima ,  Yuji Mori

IPC分类号： F16L55/10 ,  F25B41/00 ,  F25B45/00 ,  F25D19/00

CPC分类号： F25B41/003 ,  F16L55/10 ,  F25B45/00 ,  C10M2203/065 ,  C10M2203/1006 ,  C10N2220/302 ,  C10N2220/303 ,  C10N2240/30 ,  F25B2345/001 ,  F25B2345/006 ,  Y10S138/01 ,  Y10S138/11

摘要： A refrigeration system uses a refrigerant which contains, as a main component, hydrocarbon or HFC-152a. A fluid tube, such as, a gas charge port tube is hermetically connected to a refrigerant flow passage in the refrigeration system for filling at least the refrigerant into the refrigerant flow passage. The fluid tube is sealed against leakage of the refrigerant from the refrigerant flow passage by means of a pinched portion and a squashed portion of a flat-plate shape which extends from the pinched portion to a distal end thereof. The squashed portion may be folded at a plurality of portions for enhancing the sealing effect. Further, instead of the squashed portion, an adhesive may be used for reinforcing the sealing effect provided by the pinched portion. Alternatively or with the use of the adhesive, an elastomer may be used for reinforcing the sealing effect provided by the pinched portion.

摘要翻译： 制冷系统使用以烃或HFC-152a为主要成分的制冷剂。 诸如气体填充口管的流体管气密地连接到制冷系统中的制冷剂流动通道，用于至少将制冷剂填充到制冷剂流动通道中。 密封流体管，用于从制冷剂流动通道的压缩部分和从夹紧部分延伸到其远端的平板形状的压扁部分被密封。 挤压部分可以在多个部分折叠以增强密封效果。 此外，代替挤压部分，可以使用粘合剂来增强由夹持部分提供的密封效果。 或者使用粘合剂，可以使用弹性体来增强由夹持部分提供的密封效果。

公开(公告)号：US5557940A

公开(公告)日：1996-09-24

申请号：US549172

申请日：1995-10-27

申请人： Roger G. Hendricks

发明人： Roger G. Hendricks

IPC分类号： F17C7/00 ,  F25B45/00

CPC分类号： F17C7/00 ,  F25B45/00 ,  F17C2201/0104 ,  F17C2205/0111 ,  F17C2205/0126 ,  F17C2205/0165 ,  F17C2205/0338 ,  F17C2227/0304 ,  F17C2227/0313 ,  F17C2250/043 ,  F17C2250/0626 ,  F17C2250/0631 ,  F17C2260/023 ,  F17C2270/0745 ,  F25B2345/001 ,  F25B2345/0051

摘要： A portable refrigerant charging unit is described which is intended to facilitate the on site charging of refrigerant systems. The uncomplicated design of the portable refrigerant charging unit provides for system that is inexpensive and easy to transport. The portable charging unit includes high temperature and high pressure cut outs to interrupt power to the heater and blower when a predetermined temperature or pressure is reached.

摘要翻译： 描述了便携式制冷剂充注单元，其旨在便于制冷剂系统的现场充电。 便携式制冷剂填充单元的简单设计提供了廉价且易于运输的系统。 当达到预定的温度或压力时，便携式充电单元包括高温和高压力切断以中断加热器和鼓风机的电力。

公开(公告)号：US5249434A

公开(公告)日：1993-10-05

申请号：US908396

申请日：1992-07-06

申请人： Anthony W. Abraham

发明人： Anthony W. Abraham

IPC分类号： F25B45/00

CPC分类号： B60H1/00585 ,  F25B45/00 ,  F25B2345/001 ,  F25B2345/007

摘要： A refrigeration system servicing apparatus includes a digital controller, a vessel for storing and pressurizing refrigerant, a solenoid actuated valve responsive to the digital controller for selective connection of the refrigeration system to a vacuum source, a solenoid actuated valve responsive to the digital controller for connection of the vessel to the refrigeration system, a pressure sensor for providing pressure readings to the digital controller from the low pressure side of the vacuum source, a pressure sensor for providing pressure readings to the digital controller from the vessel and means for quantifying the refrigerant in the Vessel. Three operational modes provided for are: a "vacuum" mode, during which residue material in the refrigeration system is boiled away; a "charge oil" mode, during which lubricant is added to the refrigeration system; and a "charge refrigerant" mode, during which refrigerant is added to a refrigeration system. During vacuum mode the refrigeration system may be subjected to a pressure integrity test. Where in an inadequate vacuum is developed the error condition is signalled and the service technician is given opportunity to attempt correction. If a sufficient vacuum is developed, but cannot be held within a certain range for a minimum period the error condition is signalled and the service technician is again given opportunity to correct the condition, or to abort the operation.

摘要翻译： 制冷系统维修设备包括数字控制器，用于存储和加压制冷剂的容器，响应于数字控制器的电磁致动阀，用于将制冷系统选择性地连接到真空源，响应于数字控制器进行连接的电磁致动阀 的压力传感器，用于从真空源的低压侧向数字控制器提供压力读数，用于从容器向数字控制器提供压力读数的压力传感器以及用于定量制冷剂的装置 该船。 提供的三种操作模式是：“真空”模式，在此期间，制冷系统中的残留物被煮沸; “加油”模式，在此期间向制冷系统添加润滑剂; 和“制冷剂”模式，在制冷剂系统中加入制冷剂。 在真空模式期间，可以对制冷系统进行压力完整性测试。 在发生不适当的真空度的情况下，发出错误状况并给予维修技术人员尝试更正的机会。 如果产生足够的真空，但是不能将其保持在一定范围内至少一段时间，则发出错误状况，并且再次给予维修技术人员校正状况或中止操作的机会。

公开(公告)号：US5201188A

公开(公告)日：1993-04-13

申请号：US739512

申请日：1991-08-02

申请人： Tsutomu Sakuma

发明人： Tsutomu Sakuma

IPC分类号： F25B45/00

CPC分类号： F25B45/00 ,  F25B2345/001 ,  F25B2345/002

摘要： A refrigerant recovering sealed container has at least a refrigerant passing portion. A connecting portion connects the refrigerant passing portion of the refrigerant recovering sealed container to a refrigerant supply/discharge port of an existing refrigeration cycle unit. A cooling section cools the interior of the refrigerant recovering sealed container so that a refrigerant filled in the existing refrigeration cycle unit is introduced into the refrigerant recovering sealed container through the connecting portion as a gaseous refrigerant and is recovered as a liquefied refrigerant. A measuring section measures an amount of the refrigerant recovered in the refrigerant recovering sealed container as the liquefied refrigerant by the cooling section. A control unit supplies control signals for activating the connecting portion, the cooling section, and the measuring section in a predetermined order.

公开(公告)号：US5172562A

公开(公告)日：1992-12-22

申请号：US757663

申请日：1991-09-10

申请人： Kenneth W. Manz ,  Charles E. Dull

发明人： Kenneth W. Manz ,  Charles E. Dull

IPC分类号： F25B45/00

CPC分类号： F25B45/00 ,  F25B2345/001 ,  F25B2345/002

摘要： In a combined recovery, purification and recharging system, a refrigerant compressor has an inlet coupled to a recovery control valve for connection to a refrigeration system under service from which refrigerant is to be recovered, purified and recharged into the system. The compressor outlet is connected to a first port of a refrigerant storage container. A filter for removing contaminants from refrigerant is coupled to a circulation control valve for selectively circulating refrigerant in a closed path during a purification cycle from a second port of the container through the filter back to the first port of the container. A vacuum pump is coupled to a vacuum control valve for selective connection to the refrigeration system under service during a vacuum cycle for evacuating the system under service to atmosphere. A pressure sensor is connected to the vacuum pump for automatically terminating vacuum pump operation when pressure in the system under service is below a preselected low-pressure threshold. The purification cycle may be initiated either automatically upon initiation of a vacuum cycle, or by an operator independently of the vacuum cycle. A recharging control valve is coupled to the second port of the refrigerant storage container for selectively feeding fresh refrigerant from the storage container to the refrigeration system under service during a recharging cycle.

摘要翻译： 在组合的回收，净化和再充电系统中，制冷剂压缩机具有联接到回收控制阀的入口，用于连接到正在使用的制冷系统的制冷系统，制冷剂将从中回收，净化和再充电到系统中。 压缩机出口连接到制冷剂储存容器的第一端口。 用于从制冷剂中去除污染物的过滤器被耦合到循环控制阀，用于在从容器的第二端口通过过滤器返回到容器的第一端口的净化循环期间选择性地循环制冷剂在封闭路径中循环。 真空泵联接到真空控制阀，用于在真空循环期间选择性地连接到正在使用的制冷系统，以将服务的系统抽空到大气中。 压力传感器连接到真空泵，用于在正在使用的系统中的压力低于预选的低压阈值时自动终止真空泵的操作。 净化循环可以在启动真空循环时自动启动，或者由操作者独立于真空循环启动。 一个再充电控制阀联接到制冷剂储存容器的第二端口，用于在再充电循环期间选择性地将新鲜制冷剂从储存容器输送到正在使用的制冷系统。

公开(公告)号：US5077984A

公开(公告)日：1992-01-07

申请号：US494306

申请日：1990-03-16

申请人： James H. Vance

发明人： James H. Vance

IPC分类号： F25B45/00

CPC分类号： F25B45/00 ,  F25B2345/001 ,  F25B2345/0052

摘要： A readily portable refrigerant handling unit for withdrawing, receiving, storing and optionally recharging the refrigerant of a down refrigeration system under repair or servicing or the like, the unit accommodating interchangeable refrigerant reclaim tanks provided with refrigerant porting systems connectable to various down systems for allowing the flow of refrigerant therebetween, the unit being constructed of a housing providing a cavity for removably receiving a reclaim tank, an openable closure on the housing and/or the tank for substantially thermally sealing the tank in the housing, access conduits or equivalent structure in the housing for allowing connection of the tank to the down system, and a cooling system and optionally a heating system in the housing adapted to selectively cool or heat the tank to withdraw or recharge the refrigerant respectively from or to the down system.

摘要翻译： 容易携带的制冷剂处理单元，用于在维修或维修等下提取，接收，存储和可选地补充下冷冻系统的制冷剂，所述单元容纳可互换制冷剂回收罐，其设置有可连接到各种下降系统的制冷剂移植系统， 该制冷剂在其间流动，该单元由提供用于可拆卸地容纳回收罐的空腔的壳体构成，壳体上的可开启的封闭件和/或用于实质上热密封壳体中的罐的容器，在该壳体中的进入导管或等效结构 用于允许罐连接到下部系统的壳体，以及壳体中的冷却系统和任选的加热系统，其适于选择性地冷却或加热罐，以分别从或向下降系统抽出或补给制冷剂。

公开(公告)号：US4856288A

公开(公告)日：1989-08-15

申请号：US650178

申请日：1984-09-13

申请人： Robert C. Weber

发明人： Robert C. Weber

IPC分类号： F25B45/00 ,  F25B49/00 ,  G01F23/70 ,  G05D9/12

CPC分类号： B60H1/00585 ,  F25B45/00 ,  F25B49/005 ,  G01F23/70 ,  G05D9/12 ,  F25B2345/001 ,  F25B2345/006 ,  F25B2400/16 ,  F25B2500/222 ,  Y10T137/7368

摘要： A sensor for sensing the quantity of refrigerant in a closed loop refrigeration system, with the sensor having attachment means on a lower portion thereof such that it may be installed in direct communication with the refrigerant line of the refrigeration system. The sensor has a hollow interior portion defined by generally cylindrical sidewalls, in which interior portion a float of conductive material is disposed, with the float being free to rise on the surface of liquid refrigerant entering the interior of the sensor from the refrigerant line. At least one electrode is disposed in the interior of said sensor, in a position such that it will be contacted by the float at the time a certain refrigerant level is reached in the interior of the sensor. The electrode forms a part of an electrical circuit configured and arranged to perform a specific control function, with such electrical circuit being completed to perform that control function at the time the certain refrigerant level is reached, this being as a consequence of electrical contact of the float with the electrode. The control function can include the providing of an alarm to the operator of the system, or the automatic addition of refrigerant to the system as needed, and in controlled amounts.

摘要翻译： 用于感测闭环制冷系统中的制冷剂量的传感器，其中传感器在其下部具有附接装置，使得其可以安装成与制冷系统的制冷剂管线直接连通。 传感器具有由大致圆柱形的侧壁限定的中空的内部部分，其中布置有导电材料浮子的内部部分，浮子在制冷剂管线进入传感器内部的液体制冷剂的表面上自由上升。 至少一个电极设置在所述传感器的内部中，使得在传感器内部达到一定制冷剂水平时，浮子将与浮子接触。 电极形成电路的一部分，其被配置和布置成执行特定的控制功能，其中完成这样的电路以在达到某个制冷剂水平时执行该控制功能，这是由于 用电极浮动。 控制功能可以包括向系统的操作者提供警报，或者根据需要自动地向系统添加制冷剂，并以受控的量。

公开(公告)号：US4755957A

公开(公告)日：1988-07-05

申请号：US884541

申请日：1986-03-27

申请人： Daniel White ,  John Hancock

发明人： Daniel White ,  John Hancock

IPC分类号： B60H1/00 ,  G07F5/18 ,  G07F9/02 ,  F25B45/00

CPC分类号： B60H1/00585 ,  F25B2345/001 ,  F25B2345/003 ,  F25B2345/0052

摘要： Method and apparatus for servicing air-conditioning systems employing electronic processing means for initially diagnosing the air-conditioning system and, thereafter, if tests or repairs are needed, for guiding the mechanic to correction of its defective operation and for charging the system with refrigerant and oil. The apparatus, according to a preferred embodiment, includes a microprocessor operable in three modes: a "system selection" mode during which the type of system being serviced is identified; a "diagnose" mode during which the microprocessor receives signals indicative of the high and low side pressures of the air-conditioning system and develops a list of possible causes of system malfunction, and a "charging" mode during which the microprocessor automatically charges the system with the desired amount of refrigerant and oil. The apparatus further includes means controlled by the microprocessor for automatically compensating for changes in the viscosity and temperature and, hence, of the flow rate of the oil to ensure the air-conditioning system will always be correctly filled. The invention permits accurate diagnosis and repair to be carried out by relatively inexperienced personnel in a straightforward, efficient manner.

摘要翻译： 用于维修空调系统的方法和装置，其使用电子处理装置来初始诊断空调系统，之后如果需要进行测试或修理，则用于引导机械师校正其有缺陷的操作并且用制冷剂对系统充电， 油。 根据优选实施例的装置包括可以以三种模式操作的微处理器：“系统选择”模式，在该模式期间识别被维护的系统的类型; 微处理器接收指示空调系统的高低侧压力的信号的“诊断”模式，并且产生系统故障的可能原因的列表以及微处理器自动对系统充电的“充电”模式 具有所需量的制冷剂和油。 该装置还包括由微处理器控制的装置，用于自动补偿粘度和温度以及因此油的流量的变化，以确保空调系统将始终被正确地填充。 本发明允许由相对缺乏经验的人员以简单，有效的方式进行准确的诊断和修复。

公开(公告)号：US4528826A

公开(公告)日：1985-07-16

申请号：US625464

申请日：1984-06-28

申请人： Richard J. Avery, Jr.

发明人： Richard J. Avery, Jr.

IPC分类号： F25B43/00 ,  F25B45/00

CPC分类号： F25B43/006 ,  F25B43/003 ,  F25B45/00 ,  F25B2341/0016 ,  F25B2345/001 ,  F25B2400/16

摘要： A refrigerant fluid accumulator and charging apparatus for vapor-compression refrigeration systems comprising a pressure vessel having an interior liquid/vapor separation chamber, a liquid reservoir, a refrigerant inlet conduit, a primary refrigerant vapor outlet conduit and a secondary refrigerant outlet conduit in communication with a sump portion of the reservoir and with the primary outlet conduit. The secondary refrigerant outlet conduit includes a sight glass for observation of the flow of fluid from the sump into the compressor suction line. Refrigeration systems may be accurately charged with refrigerant fluid by operating the system at design load conditions with the accumulator and charging apparatus interposed in the refrigerant circuit between the evaporator and the compressor and by venting refrigerant fluid from the system until the flow of fluid through the secondary outlet conduit changes from liquid or mixed phase to substantially the vapor phase.

摘要翻译： 一种用于蒸气压缩制冷系统的制冷剂流体储存器和充装装置，包括具有内部液体/蒸汽分离室，液体储存器，制冷剂入口导管，初级制冷剂蒸汽出口导​​管和与第二制冷剂出口导管连通的压力容器 储存器的贮槽部分和主出口导管。 次级制冷剂出口导管包括用于观察从贮槽进入压缩机吸入管线的流体流的观察窗。 制冷系统可以通过在设计负载条件下操作系统而将制冷剂流体精确地装入，蓄能器和充电装置插入在蒸发器和压缩机之间的制冷剂回路中，并且通过从系统排出制冷剂流体直到通过次级流体流动 出口导管从液体或混合相变化到基本上为气相。