Abstract: A flow measuring valve device (1) for fluid, the flow measuring valve (1) comprising a first restriction (48) and a second restriction (76) connected in series with the first restriction (48), the flow rates of said restrictions (48, 76) being unequally dependent on the viscosity of the fluid, and a method for determining the viscosity of the fluid by means of the device.

Abstract: A method of mechanically hot tapping petroleum equipment that contains a hydrocarbonaceous fluid in its interior by drilling an aperture in such equipment while employing cooling by cyclic drilling and/or refrigeration, the equipment drilling being carried out in a manner such that the temperature of the drill and material being drilled do not exceed a predetermined target temperature that is derived from the decomposition temperature, auto-ignition temperature, and like characteristics of the fluid present inside the equipment.

Abstract: The present invention relates to an apparatus for use in field servicing a choke valve system. The apparatus is used for lifting, manipulating, and handling the heavy components of hydraulic choke valves. The apparatus includes an elongated track, a choke valve support structure, a trolley that selectably reciprocates along a length of the trolley, and an attachment mechanism for attaching a choke actuator to the trolley.

Abstract: A chatter resistant shuttle valve is provided to direct fluid flow from at least two sources of pressurized fluid to a downstream apparatus. The shuttle valve includes a valve body with a shuttle valve member movably mounted inside. A dampening chamber is provided which dampen opening movement of the shuttle as it moved from a closed position on one side of the shuttle toward a closed position on the other end of the shuttle. One or more dampening chambers may be provided.

Abstract: The invention relates to a storage reservoir for receiving grease or a like lubricant for a lubricant pump with a, for example, cylindrical side wall and a cover wall closing off a reservoir interior space at a top of the side wall. A pressure compensation device is disposed such that the reservoir interior space is flow-connected with a reservoir exterior space via an air-permeable but water-impermeable membrane.

Abstract: A low permeation weldable fuel tank assembly is provided to reduce fuel vapor permeation from a fuel tank. The weldable fuel tank assembly has a mounting portion mountable to the fuel tank and a valve housing that is attachable to the mounting portion. The mounting portion includes a fuel vapor permeation barrier.

Abstract: A manifold system is provided herein. The manifold is operative to automatically switch between an In-Use supply of compressed gas to a Reserve supply of compressed gas. The manifold system is constructed so that after it has been installed, it may be converted for use in other applications such as between compressed gas cylinders and portable bulk liquefied gas. The system may include low wattage electric heater which are mechanically held in direct contact with the valve seat body housing of the primary regulators. The direct contact of the heaters with the valve seat is operative to prevent the primary regulator valve seat from freezing up. The manifold system may include transducers at a plurality of points in the system. A processor is operative to control one or more solenoids to switch supplies of compressed gas and to trigger alarms responsive to the outputs of the transducers.

Abstract: An improved mounting unit of wall faucet mainly is to design two locking ends extruded on the shutter near the granite counter to lock the locking units and position the water faucet on the granite counter; in addition, the locking ends are designed on the non-returning pads in the locking screw caps to prevent the water flow from effusion from the locking units. Therefore, because the locking units are locked directly on the locking ends of the water faucet and the water flow can directly flow from the locking screw caps of the locking units and inner thread portion vertically, so as to shorten the interval between the shutter and wall after the installation of water faucet into the shutter of a granite counter for saving space and costs in connection materials.

Abstract: Disclosed is a relief valve, in which a flow rate of hydraulic fluid is not greatly changed even when temperature is changed, and thus providing smooth operation and preventing foreign materials contained in the hydraulic fluid from being introduced into the relief valve. The relief valve is comprised of a sleeve provided with a high-pressure inlet and a tank fluid channel; a main poppet provided with an inflow fluid passage and a back pressure chamber; an annular fluid passage provided on a front end of the main poppet; a seat provided with a seat fluid channel communicating with the back pressure chamber; and a pilot poppet communicating the seat fluid channel with the tank fluid channel.

Abstract: The inline flow control device includes housing with a tubular portion coaxially aligned with the tubular portion of a fitting threaded to the housing. A piston has a bore extending therethrough with the tubular portions extended thereinto in axial spaced relationship, the fitting tubular portion mounting a valve seat to abut against a piston internal shoulder when the piston has axially moved relative to the tubular portions to a blocking position to block fluid flow through the device. The piston enlarged diametric portion bottom surface is in fluid communication with the piston bore in both of the piston positions but not in fluid communication with the body high pressure inlet when the piston is in its blocking position. A spring resiliently urges the piston in its blocking position. Two embodiments are pressure regulators while the third is a balanced valve.

Abstract: Methods and apparatus for regulating fluid pressure are described. A fluid regulator with relatively large passages and a high-pressure reserve may improve performance when the regulator is used in a sustained sequence. A smaller area stem piston may make the regulated pressure more independent of the input pressure.

Abstract: In the housing 1 of a hydraulic machine, the pressure Pi acts in the chamber 2. For this purpose, a passage opening 4 is provided, which is formed as a valve seat 5. A valve body 6 can be displaced longitudinally in the housing 1 and forms a pressure-tight spring chamber for an inner valve spring 21. The spring chamber is connected to the chamber 2 via a pressure equalizing hole 9. The prestress of the inner valve spring 21 can be set by means of a setting screw 18. In addition, there is an outer valve spring 22. Both the valve springs load the valve body 6 with the effect of closing it. The pressure equalizing valve described combines a compact design with an advantageous flow characteristic. When a maximum value of p1 is reached, the valve body 6 lifts off the valve seat 5 and hydraulic fluid from the chamber 2 flows away via the valve chamber 3.

Abstract: An improved assembly for use in an in-line starter valve. A flexible material system in the form of a flexible belt is used to translate motion from a manually operable wrench shaft to a piston rod in order to render an in-line starter valve to a closed, partially opened, or an extreme opened position. When the wrench shaft is manually rotated, tension is imparted on the flexible band which, in turn, translates tension to a piston rod which then travels longitudinally resulting in the opening or closing of the in-line starter valve. An index mark on a handle of the wrench shaft indicates the closed, partially opened, or extreme opened position of the in-line starter valve. The use of the flexible belt affords greater durability, less weight, and less costly production than the prior art assemblies.

Abstract: A flow rate control valve comprising a valve body having an input port, an output port and an exhaust port, a valve means that is arranged in the valve body and controls the communication of the ports, and an electromagnetic operation means for driving the valve means. The valve means has a first valve body having a first valve portion that is seated on a partitioning plate disposed in a communication chamber formed between the input port and the output port and a first valve portion provided at one end portion, and a second valve body having a valve portion that comes in contact with the second valve portion.

Abstract: A female hydraulic coupling member is disclosed which comprises a first flow port; a second flow port; a third flow port in fluid communication with both the first flow port and the second flow port; a first poppet valve for opening and closing the first flow port; and a second poppet valve for opening and closing the second flow port, the second poppet valve being connected to the first poppet valve such that the second poppet valve moves to the closed position when the first poppet valve is open and moves to the open position when the first poppet valve is closed.

Abstract: An essentially fully balanced plug valve is presented in which the flow control contour is interior to the moving member. The sealing edge of the moving member is at the exterior surface relative to the interior contour. This sealing edge is formed by use of matching angles on the interior of the moving member and the exterior of the stationary member. As a result, operation of the plug is fully balanced with the internal fluid pressure of the liquid therein. The sealing surface of the stationary member is positively retained therein to prevent blowout of the sealing surface. Should failure of the sealing surface occur, a secondary metal-to-metal seal will provide fluid containment albeit possibly at a reduced containment level.

Abstract: The invention relates to an electrically-opened micro fluid-valve. The inventive valve comprises: at least one planar support (12); at least one afferent microchannel (14); at least one efferent microchannel (16), said microchannels being arranged in the support (12); such that at least one of the ends (141 and 161) thereof touch the inner face (121) of the support close to one another; at least one deposit (18) of a heat-sensitive material which is disposed on the inner face (121) of the support (12); and at least one heating means (20). According to the invention, the aforementioned deposit (18) of heat-sensitive material at least partially seals the space separating the ends (141 and 161) of the microchannels (14 and 16), thereby preventing same from intercommunicating.

Abstract: A cylindrical ring sized to slide over the box end of an oilfield tubular having a given external diameter, has a shoulder at one its ends and a sidewall along its length. The sidewall has a circumferential groove about its interior surface housing a band which can be made tight against the exterior surface of the oilfield tubular by a latch, accessible through a slot in the sidewall, and which becomes even tighter if the tubular attempts to escape from the band. In a first orientation, the cylindrical ring is used as a load ring. By turning the cylindrical ring upside down, the cylindrical ring is used as a thread protector for the pin end of the tubular.

Abstract: A pipe blanket is provided for wrapping around and insulating a pipe. The pipe blanket comprises an insulation mat having an outer surface and an inner surface adapted to lie adjacent the pipe when the pipe blanket is wrapped around the pipe. An outer cover of the pipe blanket is coupled to the outer surface of the insulation mat. The insulation mat is configured to enclose a variety of pipes having different sized diameters. The pipe blanket further includes a closure means configured for securing the insulation mat and outer cover about the pipe. The insulation mat further includes a plurality of pleats.

Abstract: An elastic material includes a plurality of zones. Each of the zones has a particular modulus of elasticity associated with it and the distribution of the zones throughout the elastic material causes the material to have a variation of modulus of elasticity along a particular direction in the material. The elastic material includes a weft, which includes a relatively inelastic component, and a warp, which includes the relatively inelastic component together with the relatively elastic component.

Abstract: A pressurized container includes a vessel defining a chamber therein. A housing that is connected to the vessel defines an outlet that is fluidly separated from the chamber by a closure member. A moveable member may be seated within and form a seal with the housing and abut the closure member. Activation of an initiator propels the moveable member through the closure member, thereby fluidly connecting the chamber and the outlet. The pressurized container might include an obstruction partially blocking an outlet path and another initiator that breaks the obstruction when activated, thereby further opening the outlet path. The pressurized container might include a main path fluidly connected to the outlet, a first secondary path that connects the main path to the chamber, and a second secondary path that also connects the main path to the chamber.

Abstract: A method of estimating composition of fuel in the fuel tank of a vehicle. A refuel event is detected. Fuel consumption is monitored during a plurality of stages after the refuel event. A plurality of fuel trim shift values are determined relative to the stages. The fuel trim shift values are used to estimate a fuel composition change. This method eliminates a need for a hardware fuel composition sensor and also provides dynamic filtering of fuel trim values.

Abstract: A liquid crystal dispensing system includes a container, a discharge pump, a nozzle, and a control unit. The discharge pump draws in and discharges liquid crystal that is contained in the container. The nozzle dispenses the liquid crystal discharged from the discharge pump onto a substrate. The control unit determines a dispensing amount of liquid crystal based on a spacer height formed at the substrate and to control the discharge pump in order to dispense the determined amount of liquid crystal onto the substrate.

Abstract: A device for verifying the amount of gasoline dispended by a gasoline pump is disclosed. The device comprises a housing containing a flow meter with said housing adapted to receive a gas pump nozzle and having an exit nozzle which is received by an intake gasoline channel of an automotive vehicle. In this manner, the housing and corresponding flow meter is integrated between the gas pump nozzle and gasoline-receiving channel of the vehicle. A display on the flow meter housing records the amount of gasoline dispensed therethrough. A user is then able to compare the recorded amount on the flow meter display with the amount recorded on a gas pump display. In an alternative version, a flow meter is incorporated within the gasoline-receiving channel of a vehicle. An automotive display then displays the volume of gasoline pumped into the vehicle for comparison with the volume displayed on the gas pump display.

Abstract: A wood working knife for use in a wood working machine, comprising a knife body having a first cutting edge and an opposed second cutting edge, the knife body having a first clamping surface and a second clamping surface. The first clamping surface has opposed clamping features separated by a middle section, the opposed clamping features and the middle section being sized and shaped such that, upon the knife body being inserted into a clamping assembly, the clamping forces are localized towards the opposed cutting edges and away from the middle section.

Abstract: A manual log splitting device for splitting a log has a first assembly including a base plate for resting of the log and a first upright extending upwardly from the base plate. A second assembly having an upright sleeve, impact plate, and wedge assembly, is axially and slidably mounted on the first upright with the upright sleeve. A user splits the log by causing the second assembly to move towards the base plate such that the wedge assembly passes through and splits the log. A receptacle abuttingly engages the upright sleeve and the base plate when the second assembly is in a resting position where the wedge assembly is slightly spaced apart from the base plate. Thus, movement of the second assembly towards the base plate beyond the resting position, and contact therebetween, is prevented.

Abstract: A split sawbox for a gangsaw includes a sawbox having at least first and second mating sawbox sections. The sections are linearly selectively translatable relative to one another between a closed position wherein the sections are releasably locked together for operation of the gangsaw, and an open position wherein the sections are linearly separated from one another to open a gap within which a workman may stand for maintenance of the gangsaw.

Abstract: A worktable apparatus includes a table with a tabletop having a plurality of legs attached thereto. The tabletop has an opening extending therethrough. A panel is hingedly coupled to the tabletop adjacent to the opening and is selectively positionable in a closed position extending over the opening or in an open position exposing the opening. The panel has an upper surface and a lower surface. The panel has central aperture extending therethrough. A plurality of brackets is attached to the lower surface of the panel. The brackets are configured to releasably couple a cutting tool to the lower surface and so that a cutting implement of the cutting tool extends through the central aperture.

Abstract: A pocketbook assembly includes a pocketbook having a rectangular shape with a first compartment and a second compartment divided along a fold line extending between a top edge and a bottom edge. The pocketbook has a first side edge abutting the first compartment and a second side edge abutting the second compartment. Each of the first and second compartments has a first side and a second side. The first side of the first compartment has an elongated first slot therein. Each of the first and second sides of the first compartment has a viewing window therein for viewing an interior of the first compartment. The second side of the second compartment has an elongated second slot therein. The second slot extends between the second side edge and the fold line to form an opening into the second compartment.

Abstract: A protective cover for motor vehicle mainly includes a cover, at least two flexible metal rings that are lengthwise sequentially spaced at and attached to an inner side of the cover to enclose a relatively large area of the cover, and adjustable belts with hook belt fasteners spaced at a lower edge of the cover. The flexible metal rings are adapted to automatically stretch the cover for covering an upper part of a motor vehicle, and the hook belt fasteners are adapted to firmly hold the cover to a lower part of the motor vehicle. To fold and store the cover, simply fold the cover to align the metal rings with each other, and bend the aligned metal rings into several superposed smaller loops, so that the folded cover may be stored in a bag in the flat and folded state to occupy only a relatively small space.

Abstract: A non-pneumatic bicycle tire has a main tire body and at least one rim retaining member. The main tire body includes a rim engagement portion and a ground contact portion with a ground contact surface. The at least one rim retaining member is fixedly attached to the rim engagement portion. The at least one rim retaining member includes a pair of elastically deformable rim retaining portions extending laterally in opposite axial directions. Preferably, the main tire body has a plurality of the rim retaining members coupled thereto. In one embodiment, the rim retaining members are attached to the inner surface of the main tire body, while in another embodiment, the rim retaining members are embedded into the rim engagement portion of the main tire body.

Abstract: A wheel clamping assembly provides a frame having three arms, two fixed stops and a turnable cam. The arms are equally spaced and have holes to admit the stops and the cam. The stops have an extension eccentrically located upon the top of the cylinder. Then the cam has an involute, having an expanding radius, upon the top of the cam. In use, the stops are placed upon two arms and the cam is placed upon the remaining arm, all at the same radius. A wheel rim is positioned upon the stops and the cam. The cam is then turned to grasp the wheel. The stops and the cam are made of a non-marring material.

Abstract: A tabbed honeycomb structure or pleated panel is made from a stack of collapsed multi-cellular material. The stack is split at bond lines thereby forming the panels of pleated or honeycomb material having a joint tab on one face. The tabbed, honeycomb material is attached between a headrail and a bottomrail to form a window covering.

Abstract: A spool forming part of a lift cord drum for a covering for an architectural opening has a generally cylindrical body about which the lift cord is adapted to be wrapped and a frustoconical end encouraging the wrapped cord to shift in a predetermined direction. A longitudinal slot in the cylindrical body retains one end of the lift cord and allows the end of the lift cord to slide along the slot as wrapped cord is increased or decreased so as to minimize the possibility of the cord becoming entangled in itself.

Abstract: A slat control mechanism for Venetian blinds includes a control assembly, guide sliding assemblies, a linkage drawing plate, and abutting members wherein first rope ladders are suspended between upper and lower beams of a Venetian blind for the abutting position of a plurality of slats in an equal space thereto and are located to adjusting seats with adjusting rods attached thereto so as to tilt the slats into different angles thereby. A lift cord is sequentially led through each slat thereof and wound through a pulley seat adapted at one end of the upper beam to extend downwards there-from so as to lift or expand the slats thereby.

Abstract: To avoid repeated damage to a lower section of a metal roll-up door, the lower section is replaced by a more impactable curtain assembly. The curtain assembly is so readily scalable, horizontally and vertically, that much of it can be manufactured and field assembled right at the installation site. The curtain assembly may comprise one or more strips of fabric that are cut from a roll of a certain width. The length of the fabric strips corresponds to the width of the doorway, and the number of strips is based on the vertical span of the door section that is being replaced. Windbars can be attached where adjacent strips connect to each other. A weighted, semi-rigid bottom bar reinforces the lower edge of the finished roll-up curtain. Under impact, the bottom bar has sufficient flexibility to allow the curtain to resiliently break away from within the door's vertical guide tracks.

Abstract: A pull cord control device for Venetian blind includes a mounting body made up of an engagement piece having symmetrical registration posts for positioning rollers to be mounted thereto, and a limiting piece equipped with a pair of teeth racks symmetrically extending at both sides thereon in mesh with a control gear disposed at one side thereof to define a confinement space there-between for a coupling post with an embossed mounted thereto to be located in the middle thereof. A U-shaped groove is vertically indented at the inner side of the limiting piece therein for a U-shaped and metallic protection rod to be located therein and abutted against the upper edge of the confinement space thereof A decoration lid of an oval shape with a pull-cord passage slot disposed thereon is integrally formed at one end of the limiting piece thereof with the protection rod exposed precisely at the inner lower edge of the pull-cord passage slot thereof.

Abstract: A direct-acting type diecasting machine having an inexpensive and simplified hydraulic circuit is provided, which includes: a mold clamping cylinder for clamping and opening/closing a mold in a direct-acting manner; a single two-way hydraulic pump driven by a driving motor for supplying hydraulic fluid to the mold clamping cylinder in two directions; a hydraulic circuit for driving the mold clamping cylinder by controlling supply of hydraulic fluid from the two-way hydraulic pump to the mold clamping cylinder and discharge of hydraulic fluid from the mold clamping cylinder which proceeds in accordance with movement of a piston of the mold clamping cylinder; and a hydraulic controller for controlling rotational speed of the driving motor associated with the two-way hydraulic pump in opening/closing the mold at high speed and controlling torque of the driving motor in clamping the mold.

Abstract: A casting member comprising hot-die steel or high-speed steel as base material and having coating layers at least on its working plane, wherein the outermost layer among the coating layers consists essentially of at least one nitride, oxinitride or carnonitride composed mainly of V, and another coating layer comprising at least one nitride, oxinitride or carnonitride composed mainly of Cr is formed as a layer just above the base material. If necessary, an intermediate layer comprising at least one nitride, oxinitride or carnonitride composed mainly of V and Cr may be formed as a coating layer on the boundary surface between the outermost layer and the layer just above the base material. The thickness of the outermost layer is preferably 0.5 to 5.0 ?m, the thickness of the layer just above the base material is preferably 0.5 to 3.0 ?m, and the thickness of the intermediate layer is preferably 1.0 ?m or less.

Abstract: A cooling drum for metal cast strip by continuous casting has dimples 40 to 200 ?m in average depth and 0.5 to 3 mm in diameter of circle equivalent formed on a plated peripheral surface of the cooling drum, adjacent to each other at rims of the dimples; and a film, containing oxides of at least one member selected from the group consisting of Ni—W, Ni—Co—W, Cr, Ni—Fe and Ni—Al, is formed on the peripheral surface.

Abstract: A method and strand guide for supporting, guiding and cooling casting strands (1) made of steel, especially preliminary sections (2) for girders, which are cooled by injected water (29) and are drawn, serve to prevent cracks, especially surface cracks, from appearing in the microstructure by adapting the cooling conditions of the surface of the strand in the region of the secondary cooling, and serve to prevent undercooling of the strand shell, wherein in order to avoid an undesirable solidification structure on the upper flange edges or in other cross-sectional areas, the cooling and support of the beam blank format are so adapted to the solidification range that cooling and support are provided exclusively where a crater is formed.

Abstract: Appropriate amount of brazing material is put on each of inner and outer recessed portions of a first heat storing element. Then, the first heat storing element is placed close to and substantially parallel to a second heat storing element, and an inner projected portion of the second heat storing element is fitted into the inner recessed portion of the first heat storing element, and simultaneously an outer projected portion of the second heat storing element is fitted into the outer recessed portion of the first heat storing element.

Abstract: A food storage and preparation device (10, 50, 100, 200) is provided for more rapidly cooling or heating a mass of food or other product contained within a storage pan. The device includes a plurality of air contact fins (20) which rapidly convey heat to and from the ambient surrounding air and a plurality of food contact fins (22, 56, 106) which are inserted within the mass of food to increase the surface area of the food exposed to a heat transfer surface to more rapidly transfer heat to or from the mass of food.

Abstract: A cooling assembly for removing heat form an enclosed environment containing a gimbal device. The assembly comprises an exhaust bellows equipped with a device to draw heated air from the heat source to the outer environment an inlet bellows through which cool, outside air enters to displace the heated air.

Abstract: An electrohydrodynamically enhanced heat transfer system (EHD) includes an electrode completely encapsulated in an insulating material and coupled to a power supply to generate an electric field between a heat transfer surface and the encapsulated electrode when energized for interacting with the heat exchange surface and the working media to reduce frost formation on the heat transfer surface and to enhance heat transfer. The power supply may be completely encapsulated and immersed into the working media. In order to reduce accumulation of condensed liquid onto the electrode, the surface of the insulating material of the encapsulated electrode is either covered with a water repellent, or heated a few degrees above the dew point temperature of the air surrounding the heat transfer surface. The encapsulated electrode can be energized by an AC or DC electric field through a controlling switch.

Abstract: A heat pipe assembly includes at least a flattened portion formed on the heat pipe. The internal surface of the heat pipe includes a wick structure attached thereon, and a mesh supporting member disposed therein. The wick structure is compressed on the internal surface of the heat pipe by using the mesh supporting member. The mesh supporting member includes a plurality of radially and axially arranged stripes. The radially and axially arranged stripes are orthogonally stacked, thereby forming mutually communicable working fluid channels in the flattened portion of the heat pipe.

Abstract: A heat exchanger including upper and lower header tanks, a vertical baffle in the lower header tank defining first and second longitudinal chambers, a check valve, two tube rows, and a coolant inlet to the first chamber and outlet from the second chamber. The baffle includes a by-pass hole therethrough. One tube row includes a plurality of vertical tubes extending between the upper header tank and the first chamber of the lower header tank, and the other tube row includes a plurality of vertical tubes extending between the upper header tank and the second chamber of the lower header tank. The check valve creates a leak-proof seal during standard operating mode to prevent pressure release from the header tank and creates an air path between the header tank and the environment during draining mode to allow vacuum relief from the header tank.

Abstract: An air-to-air heat exchanger, is provided that comprises a folded fin core formed from a continuous sheet of thermally conductive material that has been folded into alternating flat ridges and troughs; an insert overlay having an opening including two sets of uniform fingers, wherein each finger has a portion protruding into and essentially filling each trough on one surface of the folded fin core; an inset region between each finger portion and the end edges of each trough; a sealant within each inset region sealably attaching the insert overlay to the folded fin core; and an air flow divider plate. Heat exchanger components are also provided.

Abstract: A heat exchanger (20) includes a stack (22) of heat exchanger tubes (24), with the stack (22) having a pair of spaced ends (26, 28) that are received into respective manifolds (30, 32) that direct a first fluid (33), such as an exhaust gas flow of a vehicle, to and from interiors (34) of the tubes (24). The manifolds (30) and (32) are bonded to the respective ends (26) and (28) using a suitable bonding technique, such as soldering. Each end (26, 28) has an outer periphery (54) that includes furrows (56) and elongate, narrow protrusions (58), and each manifold (30, 32) has a wall (60) that extends continuously around the associated end (26, 28) and includes inwardly directed ridges (62) that are received in the furrows (56) and elongate slots (64) that receive the protrusions (58) to provide a tight joint between the wall (60) and the associated end (50, 52).

Abstract: An upper opening portion (74, 75) and lower opening portion (76, 77) are arranged in a door body (13b, 14b) located below a side window (13a, 14a), and an air conditioning unit (15, 16) is arranged inside the door body (13b, 14b), and a rotary position of a scroll casing (62, 63) of a blower (56, 57) is selected so that air can flow from the lower opening portion (76, 77) to the upper opening portion (74, 75) at the time of air-cooling and air can flow from the upper opening portion (74, 75) to the lower opening portion (76, 77) at the time of heating.