Abstract: The invention relates to a removal device (10) for removing a fluid from a refrigeration system, comprising a cooling device (11), through which the fluid is to flow and which has a pipeline assembly (12), which has a plurality of pipeline elements (24, 26) connected to each other, a fluid inlet (28) arranged above the pipeline elements, and a fluid outlet (30) arranged below the pipeline elements, the removal device having a compressor (14), which is arranged before the cooling device (11) in the flow direction and through which the fluid can flow and which is connected to the fluid inlet (28), is easier to clean because the pipeline elements are each arranged at an inclination of an angle (alpha) from the horizontal in such a way that all fluid entering through the fluid inlet (28) is moved to the fluid outlet (30) by gravity.

Abstract: The invention relates to a transportable package for a low-temperature air separation plant which has a main heat exchanger (2a, 2b, 2c) for cooling feed air (1) and a double column (5) for separating the cooled feed air, wherein the double column (5) has a high-pressure column and a low-pressure column that are arranged above one another. The transportable package has a cold box (20, 400), in the interior of which accessories of the double column (5), in particular pipelines (7, 11, 12) and valves, are arranged, but not the double column and not the main heat exchanger, wherein the transportable package has connections for joining the pipelines to the double column and to the main heat exchanger. Moreover the invention relates to a low-temperature air separation plant and to a method for producing a low-temperature air separation plant using this transportable package.

Abstract: An outdoor unit of air conditioner for ensuring strength against an impact applied to an electrical component box in a front-back, left-right, or top-bottom direction. The electrical component box has an upper partition plate, a front plate, and a box base plate coupled to one another and supported by an arm and a support post. The arm substantially perpendicularly supports the front plate in a front-back direction, and the upper partition plate. Thus, the electrical component box is strong enough to withstand an impact in the front-back and the left-right directions. Further, the support post substantially perpendicularly supports the arm and the box base plate in a top-bottom direction allowing the electrical component box to withstand an impact in the top-bottom direction. Also material of the electrical component box can be reduced.

Abstract: The present invention relates generally to an external condenser and light assembly and, more particularly, to an improved external air conditioning condenser and housing that is designed to additionally serve as a light assembly for an emergency vehicle. The condenser housing is mounted to the exterior of the emergency vehicle, which improves the performance of the emergency vehicle's air-conditioning system. The design of the condenser housing also allows it to serve as a light assembly on which emergency vehicle lights are mounted. The condenser housing and light assembly structure thereby provides for proper air conditioning functionality without occupying space on the exterior of the vehicle that would more preferably be occupied by emergency lighting.

Abstract: Systems and methods for replacing coolant of an x-ray tube assembly having a closed cooling system include a service port that is operatively installed in the cooling system and a vacuum assisted service kit that is operatively coupled to the service port. Used coolant is drained from the x-ray tube assembly, and thereafter a vacuum is drawn on the x-ray tube assembly via the service kit. Replacement coolant within a vacuum tank of the service kit is degassed under a vacuum. The degassed replacement coolant is provided into the cooling system from the vacuum tank, preferably by pushing under pressure with an inert gas to prevent the introduction of any air into the replacement coolant. The replacement coolant may be pressurized in the cooling system with the inert gas. Thereafter, the service port is closed, and the service kit may be disconnected from the service port.

Abstract: A manifold assembly includes a solenoid valve, a manifold, and a check valve. The manifold has an inlet bore and an outlet bore. The check valve has a first end and a second end. The first end is configured to directly mate with the solenoid valve. The second end is configured to directly mate to the manifold. The second end has an inlet and an outlet. The inlet is in fluid communication with the inlet bore. The outlet is in fluid communication with the outlet bore.

Abstract: A refrigerant recovery unit with improved charging accuracy is provided. In some embodiments, the contamination of charging refrigerant can be prevented while also providing greater refrigerant flow control. In addition, methods associated therewith for servicing refrigerant containing refrigeration systems are provided. In some aspects, the methods include steps that can be used to achieve more accurate assessments of the refrigerant that is charged into the refrigeration systems during servicing.

Abstract: An air conditioning equipment having an in-room unit connected to one end of the refrigerant pipes and an out-room unit connected to the other end of the refrigerant pipes. The air conditioning equipment includes signal coupling portions which are respectively disposed at both end parts of the refrigerant pipes. Each of the signal coupling portions couples an alternating current (AC) control signal to the refrigerant pipes and exhibits a predetermined impedance with respect to an AC electric signal. The configuration of the air conditioning equipment brings forth the advantages that the electrical insulation devices used in the prior art are dispensed with, and the signal transmissions between the in-room unit and the out-room unit can be performed by a simple apparatus configuration.

Abstract: The invention relates to a servicing device for vehicle air-conditioning systems comprising an evacuation assembly for withdrawing the coolant/compressor oil mixture from the coolant circuit of a vehicle air-conditioning system and comprising a coolant gas analyzer. In said device, a gas analysis connection is provided on or in at least one of the connection lines between the servicing device and the vehicle air-conditioning system. Said gas analysis connection is fluidically connected or can be fluidically connected to the coolant gas analyzer via an oil separator that can be evacuated and that is connected at least at intervals to an evacuation assembly.

Abstract: A retrofit ice making and bagging apparatus and retrofit installation method provide automatic supply of bags of ice into a freezer compartment. The apparatus has an outer housing with a lower end configured for securing on top of an aisle freezer so that openings in the lower end of the housing and upper end of the freezer are aligned to provide a passageway into the freezer compartment. An ice making unit and bag making and filling station are mounted in the housing. Ice is transported from the ice making station into partially formed bags at the bag making and filling station, and a bag is sealed and separated when a sufficient amount of ice is supplied to the bag. The bag making and filling station communicates with the passageway into a storage compartment in the freezer, whereby separated bags of ice fall into the storage compartment on completion.

Abstract: Provided is an air conditioner. The air conditioner includes an outdoor unit and an indoor unit, a plurality of refrigerant tubes guiding refrigerant to flow into the outdoor unit and the indoor unit, and a refrigerant tube support inside the outdoor unit, the refrigerant tube supporting the plurality of refrigerant tubes, wherein the refrigerant tube support has a height difference such that the plurality of refrigerant tubes are separately supported at different positions.

Abstract: An outdoor unit of an air conditioner for facilitating setting of an electrical component box into the outdoor unit. A blower chamber side of a box base plate is similar in shape to a lower partition plate provided with a receiving part formed by bending inward an upper end of the lower partition plate. When joining an electrical component box to the lower partition plate, the box base plate is set onto the receiving part along a flange, whereby positioning the electrical component box, which is fixed to the lower partition plate by fastening with a screw, welding, or other suitable method. The positioning can be achieved only by putting the box on the receiving part along the flange. Facilitated positioning and fixing leads to simplicity and enhanced workability.

Abstract: An air conditioning equipment having an in-room unit connected to one end of the refrigerant pipes and an out-room unit connected to the other end of the refrigerant pipes. The air conditioning equipment includes signal coupling portions which are respectively disposed at both end parts of the refrigerant pipes. Each of the signal coupling portions couples an alternating current (AC) control signal to the refrigerant pipes and exhibits a predetermined impedance with respect to an AC electric signal. The configuration of the air conditioning equipment brings forth the advantages that the electrical insulation devices used in the prior art are dispensed with, and the signal transmissions between the in-room unit and the out-room unit can be performed by a simple apparatus configuration.

Abstract: A refrigerant recovery and recharge device and a method to recharge oil to refrigeration equipment is disclosed. The refrigerant recovery and recharge device comprises a valve block which is adapted to establish fluid communication between the device and refrigeration equipment and a recharge path adapted to recharge oil to the refrigeration equipment through an outlet in the valve block. The device further comprises at least a first oil container and a second oil container and the valve block comprises a valve with a first inlet and a second inlet. The first oil container is in fluid communication with the first inlet and the second oil container is in fluid communication with the second inlet to recharge oil to the refrigeration equipment. The method for recharging oil recharges oil either from the first oil container or the second oil container in dependence of the type of fuel used in the vehicle.

Abstract: A triple-pipeline type first outdoor unit 2 provided with a first compressor 20 and a first outdoor heat exchanger 21, a plurality of indoor units 4A to 4D are provided, a second outdoor unit 3 provided with a second compressor 30, a second outdoor heat exchanger 32, and a second expansion valve 33, the first outdoor unit 2 is provided with a first four-way valve 60 that makes a refrigerant discharge pipe 25 of the first compressor 20 and a high-pressure gas pipe 7 capable of communicating with each other and if all the indoor units 4A to 4D perform a cooling operation at the same time, the first four-way valve 60 shuts off the communication between the refrigerant discharge pipe 25 and the high-pressure gas pipe 7, while a third four-way valve 51 is switched so as to connect a gas pipe 35d to the high-pressure gas pipe 7.

Abstract: A control method of a dryer is disclosed. A control method of a dryer including a heat pump having a inverter compressor includes determining a driving condition of the dryer; and adjusting at least one of an electric power supplied to the inverter compressor and a driving velocity of the compressor based on the driving condition.

Abstract: A room air conditioner and/or heat pump is shown with a main control and a user interface. The user interface is mounted on a user interface mount attached to the front of a main unit, but behind the bezel. The user interface mount is used to (a) insert or remove the main unit, (b) secure and protect wiring cables, (c) mount the user interface thereon, (d) direct a filter into position, (e) provide a slot for a fresh air slide, and (f) direct a bezel into position. A main control housing allows access there through to a main control circuit board, but prevents moisture from dripping on the main control circuit board. A dual filter element is located behind a double hinged door. Channels and flanges direct and secure the bezel into position.

Abstract: A hold-down bracket employed to secure an air conditioner to a roof mounted air conditioner support includes two bracket members which are adjustable relative to one another, one bracket member secured to the frame of the support and the other bracket member secured to the air conditioner.

Abstract: The invention discloses a modular air conditioning, heating, and heat recovery system. Particularly, the invention discloses a modular system having the condenser and/or evaporator heat exchangers mounted outboard of the modules and being easily removable and separatable by virtue of their positioning and valving.

Abstract: In a wall-hung air conditioner 1 provided with a vertical blade 85 for wind-direction change, a flap 60, and a fan guard 70 at an outlet 13 of a housing containing a heat exchanger 2 and a blower, the fan guard 70 is provided with a plurality of wires 71 extending in the longitudinal direction of the outlet 13 and a pair of supporting bodies 72 and 73 bundling the both ends of the wires 71, and the fan guard 70 is installed with the plurality of wires 71 extended into a space between the vertical blade 85 and the flap 60 and the pair of the supporting bodies 72 and 73 are fixed and mounted onto the outlet 13 through one-touch operation.

Abstract: A zone-control unit adapted for facile inclusion in a building's ductwork includes a mechanical terminal unit, inlet and outlet piping assemblies that are mechanically coupled together. The structure also includes at least one handle so the zone-control unit may be conveniently and safely handled both during shipping, and during installation into a HVAC system. Prior to installation into a HVAC system the fully-functional zone-control unit also includes a pair of caps respectively sealing the ends of the piping assemblies, and a pressure gauge for sensing pressurization of the piping assemblies and coil which the caps seal. Sealed in this way a pressure gauge permits testing to assure that the piping assemblies and coil are leak free, and readily assessing that zone-control units remain leak free until they are about to be installed into a building's HVAC system.

Abstract: A pipe structure of an electric compressor has an electric compressor disposed in an engine compartment of a vehicle and configured to be driven by a battery power source to compress a refrigerant, a harness connecting portion disposed on an upper surface of the electric compressor and electrically connecting a harness to the electric compressor, and a pipe connecting portion disposed forward of the harness connecting portion and connecting an air conditioner pipe to the electric compressor. At least a part of the air conditioner pipe is disposed above the electric compressor and forward of the harness connecting portion.

Abstract: A replacement basin for a refrigerated counter having an integral basin and a method of installing that replacement basin is disclosed. Upon removing of the existing integral basin, the replacement basin may be mounted to the refrigerated counter, connected to the counter's existing refrigeration system, and then used to support one or more removable product filled bins or containers.

Abstract: An object is to improve an assembly operability while enhancing disconnecting and connecting properties between a main body and a refrigerating unit of a refrigerating device, and there is disclosed a refrigerating device (showcase) which is provided with a refrigerating unit including a refrigerant circuit constituted of a compressor, a radiator as a high-pressure-side heat exchanger, an evaporator as a low-pressure-side heat exchanger and the like and which supplies, by a blower, cold air subjected to heat exchange with the evaporator to a storage chamber as a space to be cooled constituted in a main body by a blower to cool the chamber, wherein a mechanical chamber is constituted under a bottom surface of the main body, the compressor and the radiator are installed on a unit base on the bottom surface of the mechanical chamber, and a refrigerating box in which the evaporator and the blower are stored is attached to the bottom surface of the main body via hooks so as to communicate with the storage chamber.

Abstract: The present invention discloses a service method and a service device (50) for a liquid cooling system (1) of an aircraft, the service device (50) being adapted to send at least one instruction to a liquid cooling control device (10) of the liquid cooling system (1). A plurality of service lines (52, 54, 56, 58, 62) are then connected between the service device (50) and the to liquid cooling system (1). The entire liquid cooling system (1) or a sub-system (12) can then be filled, emptied, deaerated and checked in respect of a leakage. Further, it is possible to set the fill level of a reservoir (8) and to service a fill-level sensor (99) of the reservoir (8).

Abstract: Different kinds of air conditioning apparatus may be easily produced in accordance with specifications, even in a vehicle assembly factory rather than just an air conditioning apparatus production factory, and costs of transport and administration of air conditioning units, storage space in the vehicle assembly factory and suchlike may be reduced. The air conditioning apparatus includes an expansion valve (14) with a pressure adjustment screw and an air conditioning unit (16). A mounting space (84) to which the expansion valve (14) is mounted is provided at a unit case (85) of the air conditioning unit (16), and an opening portion (92) is formed in a wall portion (90) around the mounting space (84). The opening portion (92) is for insertion of a tool (106) that turns the pressure adjustment screw.

Abstract: An air conditioning equipment having an in-room unit connected to one end of the refrigerant pipes and an out-room unit connected to the other end of the refrigerant pipes. The air conditioning equipment includes signal coupling portions which are respectively disposed at both end parts of the refrigerant pipes. Each of the signal coupling portions couples an alternating current (AC) control signal to the refrigerant pipes and exhibits a predetermined impedance with respect to an AC electric signal. The configuration of the air conditioning equipment brings forth the advantages that the electrical insulation devices used in the prior art are dispensed with, and the signal transmissions between the in-room unit and the out-room unit can be performed by a simple apparatus configuration.

Abstract: A shut-off valve mounting structure is for holding shut-off valves in place in an outdoor unit of an air conditioner, and includes bases, and a fixing portion. The shut-off valves are connected to an indoor unit of the air conditioner via refrigerant communication pipes. The bases extend upwards from a bottom frame of the outdoor unit (2). The fixing portion is continuous with the bases, and holds the shut-off valves in place such that a space exists below the shut-off valves.

Abstract: A plurality of air conditioning units (20, 20) are daisy-chain connected to each other by a switching hub (31) provided in an outdoor unit (30). An integrated transmission line (10A) and internal/external transmission lines (10B) are connected to each other by a gateway (32) connected to the switching hub (31) so as to be capable of separating data transmission.

Abstract: A connector for connecting an outer plate of side panels and an outer corner post of a container body comprises a connecting plate for connecting the outer plate and the outer corner post of the container body and a cover plate. The connecting plate is perpendicularly provided with a strengthening stop plate at an inner side of a middle portion thereof and a stop groove for receiving the outer plate at an outer side of the middle portion thereof, and provided with a seat plate parallel to a base plate of the stop groove at an end thereof connecting the outer corner post. Two clipping strips are symmetrically provided on opposite sides of the seat plate and the base plate of the stop groove. The cover plate is provided with two elastic clipping strips which respectively engage with the two clipping strips and have a hook-shape cross section.

Abstract: It is an object of the present invention to provide an indoor unit of an air conditioner including a front opening and closing panel with a structure wherein a sink is difficult to occur in a design surface.

Abstract: A zone-control unit adapted for facile inclusion in a building's ductwork includes a mechanical terminal unit, inlet and outlet piping assemblies that are mechanically coupled together. The structure also includes at least one handle so the zone-control unit may be conveniently and safely handled both during shipping, and during installation into a HVAC system. Prior to installation into a HVAC system the fully-functional zone-control unit also includes a pair of caps respectively sealing the ends of the piping assemblies, and a pressure gauge for sensing pressurization of the piping assemblies and coil which the caps seal. Sealed in this way a pressure gauge permits testing to assure that the piping assemblies and coil are leak free, and readily assessing that zone-control units remain leak free until they are about to be installed into a building's HVAC system.

Abstract: An object of the present invention is to provide a showcase wherein an insulating wall and a top plate of a machine room covering a lower surface of the insulating wall can be stably held and the strength of the entire showcase can be improved. In the showcase, a display room is provided over the insulating wall; a machine room is provided under the insulating wall; a compressor, a condenser and the like of a cooling unit are disposed in the machine room; a cooling room is provided in the insulating wall; and an evaporator and a cooling fan of the cooling unit are disposed in the cooling room so that cold air heat-exchanged with the evaporator is circulated in the display room by the cooling fan, and the showcase further comprises a top plate of the machine room to cover the lower surface of the insulating wall, and the top plate is mounted on and fixed to a pipe plate of the condenser to hold the insulating wall.

Abstract: HVAC apparatus is configured to include a control system with a controller which may be connected directly to a personality module for transferring information stored in the controller related to historic operating conditions of the apparatus to the module, or information may be transferred to the controller from the module to configure the controller for operation of the apparatus at selected operating conditions of temperature, pressure and blower motor speed, for example. The personality module includes a memory circuit and a connector for releasably connecting the module to the control system of the apparatus for transferring information between the module and the controller.

Abstract: An indoor unit of an air conditioner is provided. The indoor unit includes a cabinet, a heat exchanger, and at least one ventilation unit. The cabinet includes a plurality of discharge ports formed on different surfaces thereof. The heat exchanger is installed in one side of the cabinet. The ventilation unit is installed inside the cabinet and includes a discharge port selectively communicating with one of the plurality of discharge ports of the cabinet.

Abstract: To provide a protective coat on a refrigerated sample collector for a corrosive environment a unitary frame includes a support unit with condenser and evaporator coils mounted to the support unit and an orifice connecting the condenser and evaporator coils. The evaporator coils, condenser coils and a restrictor are powder coated after being connected, whereby an effective seal is provided for the restrictor, condenser coils and evaporator coils after they are assembled.

Abstract: The invention is a modular heating, cooling and humidifying unit designed to fit within, or be interposed between segments of existing air ducting systems. The invention includes a plenum through which air is received from a central system within a structure, and which discharges heated, cooled and/or humidified air to a particular compartment within the structure, such as a room. The invention includes within the plenum a heating coil, a cooling coil and a humidifier, one or more dampeners and one or more air filters. Each of these elements is provided with controls which may be both manually and automatically operated to regulate the temperature and humidity of air being discharged into the desired room or compartment.

Abstract: Disclosed exemplary solid state light fixtures use optical cavities to combine or integrate light from LEDs or the like. In such a fixture, the cavity is formed by a light transmissive structure having a volume, and a diffuse reflector that covers a contoured portion of the structure. A heat sink member supports a flexible circuit board so as to position the light emitters to couple light to the transmissive structure and provide effective heat dissipation. The circuit board has flexible tabs mounting the emitters. When installed in the fixture, the tabs bend and the emitters press against a sufficiently rigid periphery of the light transmissive structure. TIM may be compressed between the heat sink member and the opposite surface of each tab. Heat conductive surface pads and heat conductors through vias through the tabs conduct heat from the emitters to the heat sink member, e.g. through the TIM.

Abstract: A refrigeration device comprising a refrigeration circuit that contains an evaporator, a condenser and a compressor, in addition to electronic components for operating the refrigeration device. According to the invention, all the electronic components are combined in an electronic unit.

Abstract: A configurable refrigerator comprises a control box provided with a compressor and a fan, a plurality of cooling units that are mutually connected and are connected to the control box through fastening devices, gas tubes connected between the control box and the cooling units to allow a low-temperature gas generated by the control box to enter the cooling units and return to the control box after circulation in the cooling units, and a control panel of the control box, settled on the control box or any of the cooling units. Therein, the control box can be assembled with an adjustable number of the cooling unit. Thus, the number of the cooling units can be increased or decreased as needed, thereby achieving easy assembly, disassembly and reconfiguration of the configurable refrigerator and the control panel.

Abstract: A refrigeration system is provided for use with an ultra-low temperature freezer having a deck and a refrigerated cabinet supported above the deck. The system has a first refrigeration stage and a second refrigeration stage. The first stage defines a first fluid circuit for circulating a first refrigerant. The first stage has a first compressor, a condenser and a first expansion device that is in fluid communication with the first fluid circuit. The second stage defines a second fluid circuit for circulating a second refrigerant. The second stage has a second compressor, a second expansion device and an evaporator that is in fluid communication with the second fluid circuit. The system includes an insulated enclosure supported within the deck and a split-flow heat exchanger that is in fluid communication with the first and second fluid circuits and which is located within the insulated enclosure.

Abstract: A filter in some embodiments of the invention includes: a housing defining an interior chamber substantially sealed from outside of the housing; a valve located in the chamber biased to a first position where the valve maintains a seal between the interior chamber and outside of the housing; and an anchor fixed to the housing defining a surface for a spring to urge against and bias the valve to the first position and be compressed against when a receiver enters into the housing a moves the valve to a second position, the anchor defining, at least in part, flow paths wherein a pressurized fluid within the housing can communicate with an interior of the receiver to equalize a pressure within the chamber and the interior of the receiver; and a nipple attached to the housing having an interior passageway configured to permit the receiver to pass through in a substantially sealed manner. A method of attaching a filter to a filter receiver is also provided.

Abstract: A cableless control system for an automobile air conditioner includes a slide pot potentiometer assembly for connection to an actuator arm on the back of a dashboard mounted control assembly. The position of the slide pot potentiometer assembly creates an electrical resistance signal which governs the position of the devices which moves the variable mechanical portions of the automobile air conditioner. The shape of the linear slide pot potentiometer assembly allows for the use of existing hardware and eliminates the need to run sheathed cables from the dashboard mounted control panel assembly to the mechanically variable portions which govern the operation of the automobile air conditioner.

Abstract: An apparatus for safely and efficiently purging refrigerant lines interconnected with residential and light commercial air conditioning systems. Enhanced safety is achieved by enabling the operator to conduct purge operations away from enclosed areas such as attics and crawlspaces. Efficient use of solvent is achieved by simultaneously connecting a refrigerant line connector to the evaporator end of both suction line and liquid line and discharging solvent and compressed gas through a solvent bridge connected to the compressor end of the liquid line. Thorough contaminant removal enables retrofitting air conditioning systems for use with newer, legally required refrigerants.

Abstract: Used in a refrigerant recovery machine having a refrigerant input pipe and a refrigerant output pipe, an electronic instrument is disclosed to include a control unit, a LCD device controllable by the control unit to display the operation status of the refrigerant recovery machine, and a pressure sensor unit having an input pipe pressure sensor and an output pipe pressure sensor for detecting the pressure in the input pipe and the pressure in the output pipe and transmitting the respective detected pressure values to the control unit for comparison with a pre-set pressure threshold limit value so that the control unit controls the operation of the refrigerant recovery machine subject to the comparison results.

Abstract: A refrigerated freight vehicle includes a tractor truck with a cab interior, a trailer presenting a chamber, and a cooling system to refrigerate the chamber and cool the cab. The cooling system includes a powered compressor assembly, a trailer evaporator, and a truck evaporator, with the compressor assembly operable to circulate refrigerant through the evaporators.

Abstract: The present invention is an architecturally advanced chiller unit having solid, insulated exterior walls adapted for the attachment of aesthetic surface treatments, pedestal supports for a bottom intake of ambient air, and separate chambers for electrical and hydraulic components. The roof houses inset modular fans adapted for topside maintenance and the roof also allows service accessibility to heat rejection components housed within the chiller unit enclosure. Heat removal is accomplished through angled heat exchangers also housed within the enclosure. Each enclosure has an end accessible vestibule that house electrical and refrigerant components. The chiller units design is also intended to allow the side by side placement of two or more units, for modularity. The improved aesthetic appearance of these units also eliminates the use of surrounding architectural parapet walls or screening units. The improved space effectiveness and modularity shall provide greater flexibility in building construction.

Abstract: Self-contained refrigeration units include evaporator modules, condenser modules, compressor modules, control subassemblies, and all other refrigeration components in compact interconnected modular packages. The modules, which are assembled in rigid or flexible self-contained monoblock refrigeration units, are installable, removable and replaceable as complete self-contained refrigeration units without requiring transport downtime for servicing and repairing of the refrigeration units. Vehicles with refrigeration systems arrive at a distributor and have malfunctioning units removed and complete units replaced and installed and are back on the road within minutes. Dealers' inventories are small and non complex and dealers' workers need not be skilled transport refrigeration mechanics. Dealer trucks have light cranes to remove and replace complete self-contained refrigeration units on site.

Abstract: An air conditioning equipment having an in-room unit connected to one end of the refrigerant pipes and an out-room unit connected to the other end of the refrigerant pipes. The air conditioning equipment includes signal coupling portions which are respectively disposed at both end parts of the refrigerant pipes. Each of the signal coupling portions couples an alternating current (AC) control signal to the refrigerant pipes and exhibits a predetermined impedance with respect to an AC electric signal. The configuration of the air conditioning equipment brings forth the advantages that the electrical insulation devices used in the prior art are dispensed with, and the signal transmissions between the in-room unit and the out-room unit can be performed by a simple apparatus configuration.

Abstract: A front panel constituted by a synthetic resin molded product is used with respect to a base panel, side panels, and a top panel which are formed of a metal, first retaining means for the side panels and second retaining means for the top panel are provided on the front panel to effect fixation.