Abstract: The present disclosure in at least one embodiment provides a solenoid valve for a vehicle brake, including a sleeve internally formed with a hollow interior space and fixed to a pump housing, a coil surrounding the sleeve, a first magnetic body at least partially accommodated in the hollow interior space of the sleeve, a second magnetic body at least partially accommodated in the hollow interior space of the sleeve, an elastic member disposed between the first magnetic body and the second magnetic body, an orifice configured to open and close as the second magnetic body moves, and a damping member disposed between the first magnetic body and the second magnetic body to form a gap between the first magnetic body and the second magnetic body.

Abstract: A dispensing assembly that can include first and second elements is provided. The first element can define a first outlet through which a first liquid is dispensed. The second element can define a second outlet through which a second liquid is dispensed. The first liquid can form an internal liquid stream when dispensed through the first outlet. The second liquid can form an annular liquid column around the internal liquid stream when dispensed through the second outlet.

Abstract: The present application provides a dispensing nozzle assembly for mixing a first fluid and a second fluid. The dispensing nozzle assembly may include a target assembly with a number of twisted fins and an injector ring assembly surrounding the target assembly in whole or in part. The injector ring assembly may include a number of first tubes with one or more threads therein directed towards the target assembly for the first fluid and a number of second tubes directed towards the target assembly for the second fluid such that the first fluid and the second fluid mix along the twisted fins of the target assembly.

Abstract: This invention relates to coupling devices, particularly to coupling devices for use with pressurized substances, for example, fluids such as liquids, gases, and plasmas; drive assemblies for said coupling devices; and to methods of supplying substances. The coupling device comprises a housing defining a chamber, the housing comprising inlet, outlet, and re-circulation/vent apertures; a valve assembly disposed in the chamber, the valve assembly comprising a valve; and a drive assembly located in the housing and operatively engageable with the valve assembly, wherein the drive assembly comprises a drive member disposed in the chamber; and a second cam member operatively engageable with the drive member and the valve assembly, wherein the second cam member is configured to be displaced by the drive member to cause the operation of the coupling device between uncoupled and coupled conditions, and the valve between the re-circulation/vent and charge conditions in a synchronized fashion.

Abstract: A fluidic latch device may include an input port, an additional input port, an output port, an additional output port, a pressure chamber, an additional pressure chamber, and a flexible membrane. The pressure chamber may include an inlet coupled to the input port by a first fluid channel and an outlet coupled to the output port by a second fluid channel, and the additional pressure chamber may include an additional inlet coupled to the additional input port by a third fluid channel and an additional outlet coupled to the additional output port by a fourth fluid channel. The flexible membrane may separate the pressure chamber and the additional pressure chamber and be configured to (1) block, when the membrane is in an expanded state, the outlet of the pressure chamber and (2) block, when the membrane is in an additional expanded state, the additional outlet of the additional pressure chamber.

Abstract: A water container for a beverage making machine includes side walls and a bottom, whereon there is a connecting union to the beverage making machine. The connecting union of the water container includes two apertures for water, where one aperture is an outlet aperture and the other aperture is an inlet aperture.

Abstract: A self-contained food processor is provided for treating a food flow path in the food processor with a solution. The food flow path can be treated without requiring disassembly and reassembly of the food processor and without requiring direct operator input. The food processor includes a controller for directing passage of a solution through at least portions of the food flow path without requiring constant operator oversight. The food processor can employ available positive pressure water supply, such as public utility water pressure to selectively and automatically push solutions, including rinses, backwards or forwards through the food flow path in the food processor.

Abstract: A cooling device configured to cool, using a coolant, an injection valve that injects an additive includes a rotary member surrounding an outer periphery of the injection valve and extending along the injection valve. The rotary member is supported to be rotatable around the injection valve. A clearance between an outer peripheral surface of the injection valve and an inner peripheral surface of the rotary member defines a passage through which the coolant flows. The rotary member has a rotation imparting part that causes the rotary member to rotate about the injection valve in response to a flow of the coolant.

Abstract: A choke manifold and methods for assembling the same are provided. The choke manifold can include a choke line, a first pulsation dampener in fluid communication with the choke line, and a first choke valve in fluid communication with the first pulsation dampener. The first pulsation dampener is downstream of the choke line and up stream of the first choke valve.

Abstract: A machine for producing frozen comestibles having a control system based on one or more operational characteristics, including product characteristics, to control the consistency and quality of the comestible, and to extend the useful lifespans of its components.

Abstract: A beverage dispensing apparatus having a nozzle and multiple fluid lines in fluid communication with the nozzle where the beverage dispensing apparatus has a body with a plurality of apertures, a plurality of buttons, each protruding through a respective one of the apertures and configured to control a flow of fluid through a respective one of the multiple fluid lines, the plurality of buttons having at least one active dispensing button configured to mechanically dispense a fluid and at least one remote dispensing button, and a remote dispensing device located remotely from the body configured to regulate dispensing a fluid through one of the multiple fluid lines so that when the at least one remote button is depressed, the remote dispensing device dispenses a fluid through the fluid line.

Abstract: A reactor system for high throughput applications includes a plurality of reactor assemblies, each reactor assembly including: a fluid source, which fluid source is adapted to provide a pressurized fluid to the flow-through reactors, a flow splitter which flow splitter includes a planar microfluidic chip, which microfluidic chip has a chip inlet channel and a plurality of chip outlet channels, which microfluidic chip further includes a plurality of flow restrictor channels, where each flow restrictor channel extends from said chip inlet channel to an associated chip outlet channel, where the chip inlet channel and the chip outlet channels each have a diameter, where the diameter of the chip inlet channel is the same or less than the length of said chip inlet channel and where the diameter of each chip outlet channel is the same or less than the length of said chip outlet channel.

Abstract: Apparatuses, systems, and methods are for dispensing condiments, including a base condiment together with and at least one additive. In some examples, a dispenser apparatus comprises a dispenser body having an upstream inlet that is configured to receive the base condiment and a downstream outlet that is configured to dispense the base condiment together with the additive(s). An additive body is configured to supply the additive(s) into the dispenser body as the base condiment is conveyed from the upstream inlet to the downstream outlet so that the base condiment and the additive(s) are concurrently dispensed via the downstream outlet. The systems and methods can operatively include arrangements for selecting a base condiment; selecting one or more additives from a plurality of additives; and supplying the base condiment and the additive(s) to a dispenser apparatus that dispenses the base condiment and additive(s) together.

Abstract: A fluid flow controller includes a first body portion defining a receiving surface, a second body portion, and a fluid transfer device. The second body portion includes a controller engagement member, and is configured to couple to the first body portion such that the controller engagement member faces and is spaced from an engagement point of the receiving surface. The controller engagement member is configured to be adjusted from a first distance to a second distance closer to the engagement point than the first distance based on a force applied by a foot pedal apparatus. The fluid transfer device defines a flow channel configured to be adjusted from defining a first cross sectional area to a second, lesser cross sectional area while the controller engagement member is in contact with the first fluid transfer device and adjusted towards the second distance in response to the applied force.

Abstract: A patient monitoring system includes an inflatable cuff, a gas reservoir containing a compressed gas, and a sensor. When the inflatable cuff is coupled to a wearer, the gas reservoir supplies gas to the inflatable cuff to inflate the inflatable cuff via gas pathways. As the inflatable cuff inflates, a patient monitor can receive blood pressure data from the sensor and use the blood pressure data to determine the blood pressure of the wearer. The patient monitor can also receive blood pressure data during deflation of the inflatable cuff to determine the blood pressure of the wearer.

Abstract: An integrated waterway assembly of a reverse osmosis (RO) water filtration device includes a main body, a shut off valve, a mounting shelf, a top cover, a bottom cover and a fixing ring. Water to be filtered sequentially goes through a water inlet, a shut off valve, a RO cartridge joint and a check valve, and a filtered water outlet on the main body to get the water filtered. The RO cartridge joint on a bottom portion of the main body is connected with a RO cartridge, and water enters the RO cartridge and further flows through the RO cartridge joint to get the water filtered. Given the foregoing structure, the water filtration device is structurally compact and integrated and has less water leakage.

Abstract: A lathe includes a main shaft, a moving shaft, a cutter mounted on the moving shaft, and a clamping assembly. The cutter is capable of telescopic translation relative the moving shaft. The clamping assembly includes a cylinder mounted on the cutter, an assembly member mounted on the cylinder, a moving member, and at least two clamping members. The cylinder defines an inner cavity, and a first air intake and a second air intake communicated to the inner cavity. The moving member is movably mounted in the inner cavity and partially received in the assembly member, and capable of telescopic translation relative the assembly member. The clamping members are movably mounted on the assembly member and engaged with the moving member. The clamping members are translatably urged by the moving member in a direction relative the axis defined by the assembly member.

Abstract: The present invention concerns an apparatus for ultrasonic processing of a material web having an ultrasonic vibration unit which has a sonotrode and a converter connected thereto optionally by way of an amplitude transformer, and a counterpart tool, wherein for processing of the material web the web is moved through a gap between the sonotrode and the counterpart tool, wherein the ultrasonic vibration unit is fixed to a carriage moveable relative to the counterpart tool so that the ultrasonic vibration unit can be moved together with the carriage in the force direction, that is to say in the direction of or away from the counterpart tool, wherein there is provided a force sensor for measuring the force applied to the sonotrode by the material web.

Abstract: A package for a chemical sensor including an encapsulation and a pressure balancing structure is disclosed. The encapsulation encapsulates a chemical sensor and has a hole for exposing a chemical sensitive part of the chemical sensor. The pressure balancing structure balances pressure applied to the chemical sensor at the chemical sensitive part.

Abstract: The present invention concerns an apparatus for ultrasonic processing of a material web having an ultrasonic vibration unit which has a sonotrode and a converter connected thereto optionally by way of an amplitude transformer, and a counterpart tool, wherein for processing of the material web the web is moved through a gap between the sonotrode and the counterpart tool, wherein the ultrasonic vibration unit is fixed to a carriage moveable relative to the counterpart tool so that the ultrasonic vibration unit can be moved together with the carriage in the force direction, that is to say in the direction of or away from the counterpart tool, wherein there is provided a force sensor for measuring the force applied to the sonotrode by the material web.

Abstract: The present technology discloses a system, for joining workpieces using energy, such as ultrasonic energy, where the energy concentrates at a location within a weld area, promoting sequential melting of a plurality of energy directors. The system can be configured so that the sequential melting begins at the center of the weld area and progresses outwards. Sequential melting may occur through use of a welding tip configured to reduce air pockets, a tapering the height of a plurality of energy directors, and/or tapering the energy directors themselves, all of which reduce the size of an energy transfer area produced by thermal energy. The present technology also includes a method for joining workpieces using energy such as ultrasonic energy that concentrates at a location within a weld area causing sequential melting of a plurality of energy directors using the aforementioned features.

Abstract: A method of assembling a semi-hermetic semiconductor package includes bonding a semiconductor die having bond pads to a top side of a base region of a package substrate having vertical side walls that are hollow which define an inner open volume (gap) having an adhesive or thermoplastic material therein. There are a plurality of metal terminals providing top terminal contacts on the top side of the base region and bottom terminal contacts on a bottom side or below the base region. The bond pads are coupled to the top terminal contacts. A lid is placed which provides a top for the semiconductor package, where the lid extends to vertically oriented end protrusions so that the protrusions are positioned within the adhesive or thermoplastic material to secure the protrusions within the adhesive or thermoplastic material to provide a seal for the semiconductor package.

Abstract: In a component (1), in particular a housing of a high-pressure fuel pump, in which at least one first high-pressure channel (4) and one second high-pressure channel (5) are present, the longitudinal axis of the first channel (4) is at an acute or right angle to the longitudinal axis of the second channel (5), wherein the second channel (5) leads into the first channel (4), such that an intersection is formed. The first channel (4) is formed by a central bore (10) and at least one secondary bore (11) that enlarges the cross-section of the central bore (10), wherein the longitudinal axis of the secondary bore (11) and the longitudinal axis of the central bore (10) extend parallel to one another.

Abstract: In order to create a quick-acting connection which is secure and subject to low levels of wear, in particular for the purpose of filling gas cylinders, having a housing (1), having an inlet (2) and an outlet (3) for medium which is to be transferred, and having a quick-acting-connection device (4), in particular with collet chucks (5), provided in the region of the outlet (3), and having an actuating means (7), which engages in a recess (8?) of a sliding sleeve (8) by means of an eccentric disk (12), it is proposed that the recess (8?) contains a sliding block (9), to which the eccentric disk is eccentrically coupled and which, when the actuating means (7) is pivoted, can be displaced transversely to the longitudinal axis.

Abstract: A multi-height energy-directing device, for facilitating staged welding together of workpieces. The device includes multiple elements extending from a body, wherein the elements do not all have a same height. Each element of a first group of the elements has a first height while each element of a second group of the elements has a second height differing from the first height. The elements are configured to channel welding energy through the device in a predetermined manner. The predetermine manner includes channeling the energy through taller, primary, elements, of said elements, in an initial stage of the welding process, while passing none through shorter, secondary, elements, of said elements, in the initial stage.

Abstract: A controller for a drive motor for a scraper of a frozen product dispenser operates the drive motor to rotate the scraper at selected ones of a plurality of different speeds within a freeze barrel of the dispenser, in accordance with the values of sensed operating parameters of the dispenser. The arrangement provides for rotation of the scraper at speeds appropriate for, but no greater than required for, the then existent operating condition of the dispenser.

Abstract: In one embodiment, a microfluidic sensor device includes microfluidic sensor mounted on and electrically connected a micro lead frame substrate. The microfluidic sensor is molded to form a package body. The package body includes a molded panel portion and, in some embodiments, a mask portion having one or more open channels, sealed channels, and/or a sealed chamber exposing an active surface of the microfluidic sensor. The molded panel portions and mask portions are configured to allow a material to dynamically or statically contact the microfluidic sensor for analysis.

Abstract: A connecting device for connecting a fluid sensor to a channel module has a locking device that can secure the fluid sensor on the channel module, a closure device that can allow the flow of a fluid conducted in the channel module from the channel module to the fluid sensor, and an actuating means, the actuating means actuating the locking device.

Abstract: A lubrication system comprises a lubricant reservoir, a inlet into the lubricant reservoir, a diaphragm plate, an actuator pin, a refill inlet, a refill outlet, and a shutoff valve. The diaphragm plate is disposed at a topmost location within the lubricant reservoir. The actuator pin is coupled to the diaphragm plate such that filling the lubricant reservoir drives the actuator pin from a first position to a second position. The refill inlet is configured to receive lubricant, and the refill outlet is fluidly connected to the inlet of the lubricant reservoir. The shutoff valve is connected between the refill inlet and the refill outlet, and actuated by the actuator pin so as to fluidly connect the refill inlet and refill outlet when the actuator pin is in the first position, and fluidly isolate the refill inlet from the refill outlet when the actuator pin is in the second position.

Abstract: A clamping apparatus is provided for use with a fluid flow device, such as a blood separation system. The clamping apparatus includes a clamp head at least partially defining first and second tube openings each to receive tubing. The clamping apparatus also includes a first actuator coupled to a first flow control member. The first flow control member is configured to be movable via the first actuator relative to the first tube opening to control fluid flow through tubing located in the first tube opening. The clamping apparatus further includes a second actuator coupled to a second flow control member. The second flow control member is movable via the second actuator relative to the second tube opening to control fluid flow through tubing located in the second tube opening.

Abstract: A rotary fluid distribution apparatus has a first head with a wall extending around an interior volume thereof, and having a first orifice and a second orifice formed through the wall so as to open to the interior volume, a rotor extending through the interior volume, a first separation plate positioned within the first head and having an opening formed therethrough, a second separation plate positioned within the first head in spaced relation to the first separation plate and having a first opening and a second opening formed therein, and a tunneling channel extending between the first and second separation plates so as to communicate with the opening of the first separation plate and with the first opening of the second separation plate. The tunneling channel is movable with a rotation of the rotor.

Abstract: A combination thermal management valve for management of the flow of heat transfer media is provided. The thermal management valve includes a manifold including two or more independently controlled valve assemblies configured to fluidly isolate the heat transfer media from each other. The valve assemblies may be configured to maintain desirable flow characteristics for each thermal medium.

Abstract: A thermal management valve module having separate first and second flow chambers is provided, with one or more respective inlets and outlets connected to each of the flow chambers. A first valve body is rotatably positioned in the first flow chamber, and includes a fluid pathway that connects a first and/or third inlet to a first outlet, which allows separate or mixed flows, or blocks the flow, based on the valve body position. A second valve body is rotatably positioned in the second flow chamber, and includes a fluid pathway that connects a second and/or fourth inlet to a second outlet, which allows separate or mixed flows, or blocks the flow, based on the valve body position. At least one actuator controls the positions of the first and second valve bodies.

Abstract: A faucet with a forced air dryer. The forced air dryer provides forced air for drying an object adjacent the faucet water outlet.

Abstract: A diverter valve which is operable to divert a water supply to a spray includes an undiverted through passage for another water supply, such as filtered water.

Abstract: An apparatus includes a production tool and a pipe connected to the production tool. The pipe includes an inner pipe formed of a metal-free material, an outer pipe encircling the inner pipe, and an inlet connected to a channel between the inner pipe and the outer pipe. The apparatus further includes a chemical supply system connected to the pipe. The chemical supply system is configured to supply a chemical through a channel encircled by the inner pipe to the production tool.

Abstract: Methods of determining a first position at which a dispersed phase droplet wets a surface of a channel are provided herein. The methods include immersing the dispersed phase droplet in a continuous phase fluid, wherein the continuous phase fluid is immiscible with the dispersed phase droplet, subsequently flowing the dispersed phase droplet in the continuous phase through the channel at a dispersed phase droplet velocity, wherein the dispersed phase droplet is separated from the surface by a film of the continuous phase fluid having a film thickness, and reducing the film thickness to rupture the film at the first position, wherein the droplet wets the surface at the first position.

Abstract: An air pump assembly for a power chuck has a frame and two air jet devices. The air jet devices are securely mounted on the frame. Each air jet device has a nozzle and a valve. The nozzle has a main body, a pin and a cap. The pin is mounted in the main body. The cap is mounted around a distal end of the main body and surrounds the pin. The valve may be mounted on a power chuck, faces and aligns with the pin, and has a chunk, a ball and a ball spring. With the air jet devices, the air pump assembly can blow air into a power chuck such that jaws of the power chuck are driven to move.

Abstract: Disclosed are a method and device for supplying a combustion chamber of a space propulsion engine with cryogenic liquid fuel and oxidizer propellants. The propellants are mixed at constant pressure to produce a propellant mixture, with the propellants being mixed at a location upstream of an orifice of a propellant injector. The propellant mixture is fed to an enclosure of the propellant injector, and from the propellant injector enclosure, the propellant mixture is injected into the combustion chamber. The flow rate of the propellant mixture from the propellant injector enclosure into the combustion chamber is varied by adjustment of the propellant injector, with the injection of the propellant mixture from the propellant injector enclosure into the combustion chamber being at constant pressure.

Abstract: A filling connector (10) for filling a liquid container comprises a liquid pipeline (12), for conveying liquid from a liquid inlet end (16) portion having a liquid inlet opening (14) to a liquid outlet end portion (20) having a liquid outlet opening (18), and further comprises a gas pipeline (22), for conveying gas in the opposite flow direction while liquid is conveyed through the liquid pipeline (12), from a gas inlet end portion (26) having a gas inlet opening (24) to a gas outlet end portion (30) having a gas outlet opening (28), the liquid pipeline (12) and the gas pipeline (22) being formed integrally with one another and the filling connector (10) being formed as an injection-moulded part, the gas pipeline (22) being manufactured using injection technology, such as fluid injection technology, in particular water injection technology, particularly preferably gas injection technology or projectile injection technology.

Abstract: Methods and apparatus for calibrating a plurality of gas flows in a substrate processing system are provided herein. In some embodiments, a substrate processing system may include a cluster tool comprising a first process chamber and a second process chamber coupled to a central vacuum transfer chamber; a first flow controller to provide a process gas to the first process chamber; a second flow controller to provide the process gas to the second process chamber; a mass flow verifier to verify a flow rate from each of the first and second flow controllers; a first conduit to selectively couple the first flow controller to the mass flow verifier; and a second conduit to selectively couple the second flow controller to the mass flow verifier.

Abstract: A micro fluidic probe head includes a first layer, a second layer, and a first tubing port extending from an upper face of the first layer. The first layer has a first via, enabling fluid communication between the first port and a lower face of the first layer. The second layer includes a first aperture on a face, and a first microchannel enabling fluid communication between an upper face of the second layer, facing the lower face of the first layer, and the first aperture. The head enables fluid communication between the first via and the first microchannel. At least a portion of the first microchannel is a groove open on the upper face of the second layer, closed by a portion of a lower face of a layer of the head. The probe head further comprises a second tubing port, a second via, a second aperture and a second micro channel.

Abstract: A microfluidic probe head includes a first layer, a second layer, and a first tubing port extending from an upper face of the first layer. The first layer has a first via, enabling fluid communication between the first port and a lower face of the first layer. The second layer includes a first aperture on a face, and a first microchannel enabling fluid communication between an upper face of the second layer, facing the lower face of the first layer, and the first aperture. The head enables fluid communication between the first via and the first microchannel. At least a portion of the first microchannel is a groove open on the upper face of the second layer, closed by a portion of a lower face of a layer of the head. The probe head further comprises a second tubing port, a second via, a second aperture and a second microchannel.

Abstract: An encapsulated valve system includes a first housing portion having a first facing surface, the first facing surface comprising a plurality of branch pathways formed as a recess within the first facing surface. The valve system further includes a second housing portion having a second facing surface, the second facing surface comprising a plurality of branch pathways formed as a recess within the second facing surface. A disposable conduit is configured to be interposed between the first and second housing portions and disposed within the recess of the first facing surface and the recess of the second facing surface. The disposable conduit is thus sandwiched between the first and second facing surfaces. A plurality of pinch valve actuators are mounted on one or both of the first housing portion and the second housing portion, the plurality of pinch valve actuators configured to pinch the disposable conduit at selective branch pathways.

Abstract: A connector element for connecting a pump assembly for use in a selective catalytic reduction system to a reagent supply of reagent fluid, the connector element comprising: a reagent flow passage arranged to receive reagent fluid at a first end from the reagent supply and to supply the reagent fluid via a second end to a reagent inlet port for reagent fluid on the pump assembly; a coolant passage for cooling fluid, the coolant passage arranged to be in communication with a coolant port on the pump assembly.

Abstract: A manifold having a first side, a second side, a first channel extending from the first side to the second side, and a second channel extending from the first side to the second side is disclosed. The first channel and the second channel each define a linear longitudinal axis. In one embodiment, the first channel longitudinal axis and the second channel longitudinal axis are oblique to the first side and the second side of the manifold. The manifold of the present disclosure provides channels that can be easily cleaned and allow for an increased flow performance.

Abstract: A system includes a pressure vessel configured to receive a pneumatic flow, and to supply pressurized fluid to a spray coating device. The system also includes a first chamber disposed within the pressure vessel, and configured to store a first fluid, and a second chamber disposed within the pressure vessel, and configured to store a second fluid. Furthermore, the system includes a lid removably coupled to the pressure vessel. The system also includes a first fluid pathway extending through the lid, and configured to deliver the first fluid to the first chamber while the lid is coupled to the pressure vessel. In addition, the system includes a second fluid pathway extending through the lid, and configured to deliver the second fluid to the second chamber while the lid is coupled to the pressure vessel.

Abstract: A fixture for delivering a first fluid over the basin of a sink includes a supply inlet and a delivery outlet for the fluid, the inlet connected to the outlet through a hollow body of the fixture, the hollow body including two straight, hollow metal tubes: a first tube arranged to be mounted next to the basin of the sink in use, and a second tube joined to the wall of the first tube so as to project out over the basin of the sink in use. One or more inserts are provided inside the first metal tube and together define a curved elbow duct inside the first metal tube for guiding the fluid from the first metal tube into the second metal tube. The tubes can be cut at relatively low cost from conventional rolled steel tubing, and the curved elbow duct limits pressure losses inside the first tube.

Abstract: An adjustable coolant quick coupler has a coolant supplier seat and a transmission seat that can be optionally connected or disconnected. The coolant supplier seat has a regulator assembly. The regulator assembly is able to adjust quantity of flow-in coolant and quantity of flow-out coolant. When the coolant supplier seat is connected to the transmission seat, the coolant can flow automatically from the coolant supplier seat to the transmission seat, so as to cool down electronic components inside a rack. When the coolant supplier seat is disconnected from the transmission seat, the coolant instantly stops flowing into the transmission seat. Because of the quick coupler, the rack installed inside a narrow space is convenient to set up or disassemble. Furthermore, by adjusting the quantity of flow-in coolant and the quantity of flow-out coolant, the electronic components can have a better effect of heat-dissipation.

Abstract: A quick coupler has a coolant supplier seat and a transmission seat that can be optionally connected or disconnected. When the coolant supplier seat is connected to the transmission seat, the coolant can flow automatically from the coolant supplier seat to the transmission seat, so as to cool down electronic components inside a rack. When the coolant supplier seat is disconnected from the transmission seat, the coolant instantly stops flowing into the transmission seat. Because of the quick coupler, the rack installed inside a narrow space is convenient to set up or disassemble.