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公开(公告)号：US4015776A
公开(公告)日：1977-04-05
申请号：US651717
申请日：1976-01-23
CPC分类号： F25B41/062 , F25B43/003 , F25B2341/068
摘要： The thermostatic expansion valve has a valve controlling flow from the inlet to the outlet and is biased to seated position by the compressed spring adustably mounted in the outlet. The valve is actuated by a push pin extending from the underside of the diaphragm pad. The diaphragm is mounted between upper and lower stampings welded together at their periphery. The space above the diaphragm is connected via a capillary tube to a feeler bulb and is part of a charged system the pressure of which varies with temperature at the bulb. The lower head stamping is connected to the valve body by novel means. The upper end of the body is provided with a groove receiving an O-ring. Inside this groove the body is provided with an annular extension outside the push pin hole. The lower head stamping is placed on the body and the annular extension is crimped over the stamping to firmly fix the head on the body while devloping high unit pressure on the O-ring to provide an effective seal at low cost. This also allows use of different metals in the head and body.
摘要翻译： 恒温膨胀阀具有控制从入口到出口的流动的阀，并通过可压缩安装在出口中的压缩弹簧偏压到就座位置。 阀由从隔膜垫的下侧延伸的推杆致动。 隔膜安装在其周边焊接在一起的上下冲压件之间。 隔膜上方的空间通过毛细管连接到探针灯泡，并且是其压力随灯泡温度变化的带电系统的一部分。 下头冲压通过新颖的手段连接到阀体。 本体的上端设有一个接纳O形圈的凹槽。 在该槽内，主体在推针孔的外侧设置有环形延伸部。 下部头部冲压放置在主体上，并且环形延伸部被压接在冲压件上，以将头部牢固地固定在主体上，同时在O形环上施加高的单位压力以便以低成本提供有效的密封。 这也允许在头部和身体中使用不同的金属。
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公开(公告)号：US4468054A
公开(公告)日：1984-08-28
申请号：US438802
申请日：1982-11-03
申请人： Charles D. Orth
发明人： Charles D. Orth
CPC分类号： F25B41/062 , F25B2341/0683
摘要： The inlet and outlet tubes on each side of the valve body are connected to the valve body by a notched plate engaging the shoulder upset from the tube. The upset forms a metal-to-metal seal against the seat in the body while the O-ring engages the wall of the flared section of the inlet leading to the smaller bore which receives the end of the tube.
摘要翻译： 阀体两侧的入口管和出口管通过与管的肩部翘起接合的切口板与阀体连接。 镦粗形成了抵靠主体座椅的金属对金属的密封，而O形环与入口的扩口部分的壁接合，从而通向接收管端部的较小孔。
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3.发明授权
公开(公告)号：US4632358A
公开(公告)日：1986-12-30
申请号：US734936
申请日：1985-05-16
CPC分类号： F16K31/0693 , B60H1/00485 , F25B41/062 , F25B2341/0652 , Y02B30/72
摘要： An automotive air conditioning system including an electrically operated expansion valve controlling refrigerant flow to the evaporator. The valve is pressure balanced and provides a minimum flow even when the valve is fully closed. The valve includes a solenoid operator which is energized in a pulse width modulated fashion.
摘要翻译： 一种汽车空调系统，包括控制制冷剂流向蒸发器的电动膨胀阀。 阀门是压力平衡的，即使当阀门完全关闭时也提供最小流量。 该阀包括以脉冲宽度调制方式通电的螺线管操作器。
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公开(公告)号：US4542852A
公开(公告)日：1985-09-24
申请号：US586169
申请日：1984-03-05
CPC分类号： F25B41/062 , F25B2341/0683 , F25B2500/05 , F25B2500/13
摘要： A vibration damping device for a thermostatic expansion valve comprises a spring member having a plurality of cantilevered fingers substantially parallel to the direction of travel of moving components but which are spring loaded to provide a force normal to that direction. The damping device is fixedly attached to one of the moving or stationary components and is arranged so that its fingers exert the normal force against the other of the moving or stationary components. Accordingly, a constant magnitude frictional force is produced over the range of movement, thus damping vibrations caused by pressure pulses from the compressor of the refrigeration system in which the thermostatic expansion valve is installed.
摘要翻译： 用于恒温膨胀阀的减振装置包括弹簧件，弹簧件具有基本上平行于运动部件行进方向的多个悬臂指，但弹簧加载以提供与该方向垂直的力。 阻尼装置固定地附接到移动或静止部件中的一个，并且被布置成使得其手指对另一个移动或固定部件施加法向力。 因此，在运动范围内产生恒定的摩擦力，从而阻止由安装有恒温膨胀阀的制冷系统的压缩机的压力脉冲引起的振动。
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公开(公告)号：US4065939A
公开(公告)日：1978-01-03
申请号：US653897
申请日：1976-01-30
CPC分类号： F25B41/062 , F25B41/043 , F25B2341/0683 , F25B2500/15
摘要： The novelty is the low cost, versatile manner of mounting an evaporator pressure regulator valve (EPR) on a thermostatic expansion valve (TXV) to provide a compact combination valve. The TXV controls refrigerant flow to the evaporator in accordance with the pressure acting below the diaphragm and the temperature influencing the temperature responsive charged space above the diaphragm. The rider pin connecting the diaphragm to the valve is hollowed out so that the bottom of the hole in the rider pin is in the refrigerant return flow path. A restrictor is placed in the upper end of the rider pin to prevent migration of condensed refrigerant to the head chamber in the event the valve is mounted upside down. A sleeve of low thermal conductivity positioned around the rider pin where it passes through the return conduit damps temperature changes and reduces valve hunting. The EPR threads into the TXV outlet. The interior of the bellows is sealed at atmospheric pressure so the pressure on the outside of the bellows is resisted by the atmospheric pressure within the bellows as well as by the spring. When the pressure on the outside of the bellows (which is evaporator pressure in a refrigeration system) exceeds a predetermined amount, the bellows tends to collapse and the head of the bellows pulls away from the actuating pin to open the pilot valve, allowing the piston to move to the right and thus open the outlet. When the pressure falls below the desired amount, the bellows expands and moves the head of the bellows against the actuating pin to close the pilot valve. Flow through the bleed hole in the end of the piston to the pilot valve chamber rapidly raises the pressure therein so that the return spring can move the piston to close the outlet. An adapter plate is bolted to the standard TXV and carries a dome-shaped member to house the EPR and the suction line is brazed to the dome.
摘要翻译： 新颖的是在蒸发器压力调节阀（EPR）上安装恒温膨胀阀（TXV）的低成本，多用途的方式来提供紧凑的组合阀。 TXV根据作用在隔膜下方的压力控制制冷剂流向蒸发器的温度，以及影响膜片上方响应充电空间温度的温度。 将隔膜连接到阀的骑手销被挖空，使得骑手销中的孔的底部处于制冷剂返回流动路径中。 限流器放置在骑手销的上端，以防止在上下颠倒的情况下冷凝的制冷剂向头部腔室移动。 位于骑手销周围的低导热套管穿过回流导管，可以降低温度变化并减少阀门的打猎。 EPR进入TXV插座。 波纹管的内部在大气压力下被密封，因此波纹管外部的压力受波纹管内的大气压力以及弹簧的抵抗。 当波纹管外部的压力（其是制冷系统中的蒸发器压力）超过预定量时，波纹管倾向于塌缩，并且波纹管的头部从致动销拉开以打开先导阀，允许活塞 向右移动，从而打开出口。 当压力低于所需量时，波纹管膨胀并将波纹管的头部靠在致动销上以关闭先导阀。 流过活塞末端的排放孔到先导阀室，迅速升高其中的压力，使得复位弹簧可以移动活塞以关闭出口。 接头板螺栓固定在标准TXV上，并带有一个圆顶形部件以容纳EPR，吸入管线钎焊到圆顶。
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公开(公告)号：US4794762A
公开(公告)日：1989-01-03
申请号：US7861
申请日：1987-01-27
CPC分类号： B60H1/3211 , F25B49/027 , B60H2001/3264 , B60H2001/327 , B60H2001/3277 , B60H2001/3297 , F25B2600/111
摘要： A refrigeration control system for cooling a vehicle passenger compartment having a compressor/pump for circulating refrigerant between an evaporator located for cooling the compartment air and a condenser located for ambient heat exchange. An expansion valve controls refrigerant flow from the condenser to the evaporator; and, a first thermistor senses directly the temperature of the refrigerant on the high pressure inlet side of the valve and a second thermistor senses refrigerant flow temperature on the low pressure discharge side of the valve. A microprocessor compares the first thermistor output with predetermined first upper and lower values and effects opening and closing of the compressor clutch switch for high pressure cut-off; and, a fan switch is opened and closed for energization and de-energization of a condenser cooling fan. The output of the second thermistor is compared with a second set of upper and lower limit values for responding to normal service duty cycling of the clutch; and, the microprocessor is effective upon sensing a predetermined temperature after an elapsed time interval to open the clutch switch in the event of low or insufficient refrigerant charge.
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7.发明授权
公开(公告)号：US4995240A
公开(公告)日：1991-02-26
申请号：US362138
申请日：1989-06-06
IPC分类号： F25B41/06
CPC分类号： F25B41/062 , F25B2341/0652 , Y02B30/72 , Y10T29/49405
摘要： A system for controlling refrigerant flow in an air conditioning system employing an electrically operated valve for controlling flow of refrigerant from the condenser to the evaporator. Separate thermistors sense the temperature of the refrigerant entering and discharging from the evaporator. A comparison of the sensed temperatures is used to modify the control signal to the valve for maintaining proper refrigerant flow to the evaporator. A control module is directly attached on the valve body to enhance heat conduction.
摘要翻译： 一种用于控制空调系统中的制冷剂流动的系统，其使用电动阀来控制制冷剂从冷凝器到蒸发器的流动。 分离的热敏电阻检测从蒸发器进入和排出的制冷剂的温度。 使用感测温度的比较来修改阀的控制信号，以保持适当的制冷剂流向蒸发器。 控制模块直接连接在阀体上，以增强热传导。
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公开(公告)号：US4848100A
公开(公告)日：1989-07-18
申请号：US210159
申请日：1988-05-02
IPC分类号： F25B41/06
CPC分类号： F25B41/062 , F25B2341/0652 , Y02B30/72
摘要： A system for controlling refrigerant flow in an air conditioning system employing an electrically operated valve for controlling flow of refrigerant from the condenser to the evaporator. Separate thermistors sense the temperature of the refrigerant entering and discharging from the evaporator. A comparison of the sensed temperatures is used to modify the control signal to the valve for maintaining proper refrigerant flow to the evaporator.
摘要翻译： 一种用于控制空调系统中的制冷剂流动的系统，其使用电动阀来控制制冷剂从冷凝器到蒸发器的流动。 分离的热敏电阻检测从蒸发器进入和排出的制冷剂的温度。 使用感测温度的比较来修改阀的控制信号，以保持适当的制冷剂流向蒸发器。
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公开(公告)号：US4523066A
公开(公告)日：1985-06-11
申请号：US628669
申请日：1984-07-06
申请人： Charles D. Orth
发明人： Charles D. Orth
CPC分类号： H01H35/30
摘要： The electrically operated clutch controlling operation of the compressor is regulated by a damped pressure switch. The pressure switch has a diaphragm which moves in response to pressure variation to actuate the switch. The force acting on the diaphragm is opposed by spring force. The housing is provided with a damping chamber between the diaphragm chamber and the restricted passage in the inlet. The restricted passage is the clearance between the hole drilled in the metal insert and the wire fixed in the hole. The restriction is selected relative to the damping chamber so the switch will not cycle more than four times per minute when sensing pressure at the outlet of a finned coil evaporator in an automotive air conditioning system operating under light load.
摘要翻译： 压缩机的电动离合器控制操作由阻尼压力开关调节。 压力开关具有响应于压力变化而移动的隔膜以致动开关。 作用在隔膜上的力与弹簧力相反。 壳体在隔膜室和入口中的限制通道之间设置有阻尼室。 限制通道是金属插入件中钻出的孔与固定在孔中的电线之间的间隙。 相对于阻尼室选择限制，因此当在轻负载下操作的汽车空调系统中，当检测到翅片式线圈蒸发器的出口处的压力时，开关将不会每分钟循环超过四次。
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公开(公告)号：US3960169A
公开(公告)日：1976-06-01
申请号：US546527
申请日：1975-02-03
申请人： Charles D. Orth , Charles F. Treder
发明人： Charles D. Orth , Charles F. Treder
CPC分类号： F25B41/043 , F16K17/105 , Y10T137/7766
摘要： The interior of the bellows is sealed at atmospheric pressure so the pressure on the outside of the bellows is resisted by the atmospheric pressure within the bellows as well as by the spring. When the pressure on the outside of the bellows (which is evaporator pressure in a refrigeration system) exceeds a predetermined amount, the bellows tends to collapse and the head of the bellows pulls away from the actuating pin and allows the spring acting on the pilot valve to open the pilot valve whereupon the pressure to the right of the head of the piston is reduced, allowing the piston to move to the right against the return spring force and thus open the outlet by moving the end of the piston wall past the slot in the stationary sleeve. When the pressure falls below the desired amount, the bellows expands and moves the head of the bellows against the actuating pin to close the pilot valve. Flow through the bleed hole in the end of the piston to the pilot valve chamber rapidly raises the pressure therein so that the return spring can move the piston to close the outlet. Even with the outlet closed, the small port in the piston sleeve allows enough refrigerant flow to insure adequate flow to the compressor to keep the compressor lubricated. The bleed hole in the piston head is sized to require substantial opening of the pilot valve which, therefore, minimizes false opening of the main valve. The "Teflon" "U" cup seal around the piston serves to impose a friction load and, more important, eliminates leakage flow around the piston to prevent water droplets getting between the piston and cylinder and freezing. The plastic sleeve around the cylinder "insulates" the cylinder wall.
摘要翻译： 波纹管的内部在大气压力下被密封，因此波纹管外部的压力受波纹管内的大气压力以及弹簧的抵抗。 当波纹管外部的压力（其是制冷系统中的蒸发器压力）超过预定量时，波纹管倾向于塌缩并且波纹管的头部从致动销拉开并允许弹簧作用在先导阀 以打开先导阀，因此活塞头部右侧的压力减小，允许活塞抵抗复位弹簧力向右移动，从而通过将活塞壁的端部移动通过狭槽而打开出口 固定套筒。 当压力低于所需量时，波纹管膨胀并将波纹管的头部靠在致动销上以关闭先导阀。 流过活塞末端的排放孔到先导阀室，迅速升高其中的压力，使得复位弹簧可以移动活塞以关闭出口。 即使出口关闭，活塞套筒中的小口允许足够的制冷剂流量来确保足够的流量到压缩机以保持压缩机润滑。 活塞头中的排放孔的尺寸设置成要求导阀的大量打开，因此导致主阀的假开口最小化。 活塞周围的“Teflon”“U”杯密封件用于施加摩擦负荷，更重要的是消除活塞周围的泄漏流动，以防止水滴进入活塞和气缸之间并冻结。 圆筒周围的塑料套“绝缘”气缸壁。
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