Kabushiki Kaisha Toyoda Jidoshokki Seisakusho

Nippondenso Co., Ltd.

Denso Corporation

Nisshinbo Industries, Inc.

Seisakusho Kabushiki Kaisha Toyoda Jidoshokki

Takayuki Morita

Shigeru Muramatsu

Tatemi Fukuda

Isao Asai

Takahiko Tsunekawa

Kengo Ohashi

Ikuo Komura

Hideo Tamai

Osamu Suzuki

Masanao Kobayakawa

Akira Tanaka

Hisao Amano

Masashi Ushino

Nobuharu Kakehashi

Kenichi Fujiwara

Etsuo Hasegawa

Toshiya Nagasawa

Yuji Honda

Tsutomu Miyazaki

Yoshiharu Kajikawa

Yoshio Kawasaki

Tatsutake Horibe

Hideo Hirano

Mitsunori Horiuchi

Haruyoshi Nakamura

Ikuo Kodama

Suehiro Okazaki

Toshinori Hasegawa

Toshihiro Yamamoto

Kazunori Terasaki

Shogo Sumi

Yukio Saito

Daiji Kasahara

Masuo Hayakawa

Kanetaka Kondo

Kouji Ito

Kenji Fujioka

A freezing prevention system for a refrigeration device includes a freezing-prevention temperature sensor for detecting a refrigerant temperature in a refrigerant evaporator, and a control unit for controlling operation of a refrigerant compressor based on the detected refrigerant temperature. The control unit includes a calculating means for calculating an integral value of the detected refrigerant temperature integrating with respect to a passed time after the detected refrigerant temperature becomes equal to or lower than 0&#xb0; C. When the integral value becomes equal to or larger than a predetermined value, the control unit stops the operation of the refrigerant compressor. Accordingly, the freezing prevention system can accurately perform a freezing prevention control while its production cost can be reduced.

Freezing prevention system for refrigeration device and air conditioner using the same

A bobbin changing apparatus for a flyer frame which allows works to freely be performed by attendants at a front side of the flyer frame at any time during the operation of the flyer frame, while eliminating need for providing independent rails for transporting full bobbins and empty bobbins, respectively. Disposed at a front side of a flyer frame (2) is a work platform (35) on which the number of pegs (49) which is twice as large as that of bobbin wheels are mounted with a pitch equal to a half of that of the bobbin wheels (4). Each of the pegs (49) can selectively be disposed at an operative position on a top surface of a cover plate (41) and to a retracted position retracted from the top surface. Further, the pegs can be driven reciprocatively over a distance corresponding to one pitch of the peg array. A bobbin changing mechanism 13 is disposed at a rear side of a bobbin rail 3, while supporting rails are disposed above the flyer frame 2 at the front side thereof so as to be moved up and down by a lift mechanism 7. Bobbin transporting carriers 10 having empty bobbins E for one flyer frame suspended thereof are supported on supporting rails (5, 6). Upon bobbin changing operation, the pegs (49) are disposed at the operative position which allow the full bobbins (F) and the empty bobbins (E) to be exchanged between the bobbin transporting carrier (10) and the bobbin rail by way of the pegs on the work platform (35).

Bobbin changing method and apparatus

A bobbin transporting system are overhead transporting rail for the flyer frames and an overhead transporting rail for spinning machines are disposed independent of each other. The bobbin transporting carrier running on the transporting rail for the flyer frames suspends the bobbin hangers at a pitch equal to that of bobbin wheels of the flyer frame arrayed in one of two rows in which the bobbin wheels are disposed in a zigzag pattern. The bobbin transporting carrier running on the transporting rail for the spinning frames suspends bobbin hangers at a pitch equal to that of reserve roving bobbins disposed at both sides of a spinning machine. A bobbin exchanging apparatus is disposed at a location where both the transporting rails extend in parallel and close to each other. In the bobbin exchanging apparatus, bobbins suspended at different pitches from the respective bobbin transporting carriers travelling on the transporting rails in opposite directions, respectively, are exchanged.

Bobbin transporting system for roving and spinning machines with

According to the present invention, an air conditioner includes a refrigerant-air heat exchange portion having plural refrigerant evaporation passages and heat exchanging between refrigerant flowing in the plural refrigerant evaporation passage and air passing around the plural refrigerant evaporation passages, a refrigerant-refrigerant heat exchange portion having an inlet refrigerant passage and an outlet refrigerant passages and heat exchanging between refrigerant flowing in the inlet refrigerant passage and refrigerant flowing in the outlet refrigerant passage, a pressure reducing unit placed in an upstream side of the plural refrigerant evaporation passages, and a unit case having an air flow passage therein. The refrigerant-air heat exchange portion is contained in the air flow passage, and the unit case contains the refrigerant-refrigerant heat exchange portion outside the air flow passage. Since the refrigerant-refrigerant heat exchange portion is contained outside the air flow passage in the unit case, the air passing in the air flow passage will not collide with the refrigerant-refrigerant heat exchange portion. Thus, air flow is restrained from being turbulent. In this way, uneven wind speed distribution is not formed in the air passing around the plural refrigerant evaporation passages of the refrigerant-air heat exchange portion, and therefore, distribution of the temperature in the air is not caused in the refrigerant-air heat exchange portion.

Air conditioner

A drain case 4 is disposed between the bottom wall of a unit case and the lower end of refrigerant passage pipes 15 of a stacked type refrigerant evaporator. The drain case 4 is W-shape in cross section, and comprising two pieces of outside inclined walls 32 contacting the side ends of two pieces of tank parts 16 and 17 formed at the lower end side of the refrigerant passage pipes 15, a chevron type protruded wall 33 contacting a recessed part 28 formed at the bottom end of the part between the adjacent two pieces of tank parts 16 and 17, and inside inclined walls 34 having a drain hole 36. In this arrangement, the condensed water flows from the side ends of the two pieces of tank parts 16 and 17 and the part between the two pieces of tank part 16 and 17 into the lower ends thereof reaches the two pieces of outside inclined walls 32 and protruded wall 33 of the drain case 4 before reaching the bottom end of the two pieces of tank parts 16 and 17, and then is efficiently drained therefrom. Localized corrosion that may occur at the lower end part of refrigerant passage pipes is prevented by not allowing the condensed water to stay at the lower end side of the refrigerant passage pipes.

Cooling unit and drain case for air conditioners

A bobbin-carrying apparatus to carry peg trays which have a tray and a peg protruded on one surface of the tray to support bobbins between conveyors provided at a fine spinning machine and bobbin-carrying routes provided at a winder. The bobbin-carrying apparatus comprises belts provided between the conveyors and the bobbin-carrying routes, pulleys guiding and supporting the belts, motors driving the belts functionally connected with the belts, and a pair of linear guiding members extending along the belts having the pegs of the peg trays therebetween. The belts carry the peg trays pressing the trays cooporating with the guiding members. The guiding members are provided relative to the belts so that the peg trays are carried while the pegs are arranged in the horizontal posture between the fine spinning machine and the winder.

Bobbin-carrying apparatus of a combined fine spinning machine and winder

A bobbin carrier in a spinning machine for carrying out full-bobbins from one of a pair of carriers and carrying in empty bobbins to the other of the carriers through peg trays by a full-bobbins-carrying conveyor and an empty-bobbin-carrying conveyor to a plurality of spinning machines arranged in parallel with one another. An endless belt is provided over both of the carriers and the full-bobbins-carrying conveyor and the empty-bobbin-carrying conveyor, and pulleys guide the belt, further a motor is operatively connected to the belt to drive the belt. A pair of linear guiding members are arranged so as to extend along the belt and gasp pegs of peg trays. The belt carries the peg trays with grasping the trays elastically with pressure in cooperation with the guiding members. A full-bobbin-introducing portion is provided in the full-bobbin-carrying conveyor and allows giving and receiving of the peg trays from the belt to the full-bobbin-carrying conveyor. An empty-bobbin-discharging portion is provided in the empty-bobbin-carrying conveyor and allows giving and receiving of the peg trays from the empty-bobbin-carrying conveyor to the belt.

Bobbin carrier in spinning machine

A yarn piecing method in an open-end spinning machine comprises stopping a yarn piecing machine in front of a spinning unit suffering a yarn breakage, reversing a package with a rewinding roller to rewind a yarn therefrom, cutting off the yarn to provide a yarn end having a predetermined length, moving the yarn end to a position upwardly of an outlet of a withdrawal tube in the spinning unit, reversing the rewinding roller again to feed the yarn end through the withdrawal tube to a fiber collecting surface of a spinning rotor in the spinning unit, supplying a sliver with a feed roller into the spinning unit, piecing the yarn end to the sliver on the fiber collecting surface, continuously drawing a pieced yarn from the spinning rotor, and moving the pieced yarn to a position between a presser roller and a draw-off roller which are being rotated while drawing the pieced yarn from the spinning rotor. The presser roller and the draw-off roller are mounted on the open-end spinning machine and adjustable in speed dependent on the yarn number count used for yarn winding operation during a yarn piecing process.

Method of piecing a yarn in an open-end spinning machine

A method of transferring oppositely but randomly oriented yarn packages from a spinning machine to a subsequent operation comprising moving the spinning machine conveyor on which the yarn packages are so disposed to deposit one of the packages onto a package turning means and stopping the conveyor; sensing the orientation of the package while on the package turning means; turning the package turning means in one direction or the other responsive to signals from the sensing means so that all sequential packages will be removed from the turning means facing in the same direction; moving the package off from the package turning means and sensing whether or not the package has been so removed; and again moving the spinning machine conveyor responsive to the sensing of the first package having been removed from the turning means.

Method of transferring yarn packages

A method of transferring yarn packages in a spinning frame having a plurality of spinning stations arranged in a row on each longitudinal side thereof, a single run of a full package transferring conveyor disposed centrally along the machine and a doffing unit moveable along the respective spinning stations, is disclosed herein. According to a preferred embodiment of the invention, the movement of the conveyor, which is set normally in a moving state, is interrupted only if there is no doffed package on the conveyor at a doffing position corresponding to a spinning station when the doffing unit traveling around the machine comes to and stops at that spinning station, whereupon the doffing unit is operated to perform its doffing service there; but the conveyor continues to run if there is any doffed package at that doffing position, until that position becomes clear of any such package, and doffing service is provided at the station when its doffing position on the conveyor is thus cleared of any other package.

Method of transferring yarn packages in a spinning frame

Method of automatic doffing in a spinning unit is disclosed. Automatic doffing apparatus for use in practicing the method includes a bobbin loading device for carrying an empty bobbin to a donning position in the spinning unit, and the loading device has a pushing member which is movable with the loader. As the package is released from a bobbin holder and then supported adjacently to the bobbin holder, the loading device is moved forwardly toward the donning position. On the way to the donning position, the loading device pushes the supported package away from the donning area with its pushing member. The bobbin brought to a donning position is held by the bobbin holder. According to the method, unloading of a package and loading of an empty bobbin is made by a single motion, or advancing, of the bobbin loading device.

Method of automatic doffing in a spinning unit

An apparatus for locating a servicing device which travels along a parent textile machine, such as a spinning frame, having a plurality of stations and stops at any designated station of the parent machine to there perform a servicing operation, such as yarn piecing or cleaning by use of fluid, such as compressed air or vacuum, supplied from a fluid source provided separately from the servicing device. The apparatus comprises, on each station of the parent machine, a stationary connector communicating with the fluid source and a locating guide member having a locating guide groove therein, and, on the servicing device, an air cylinder, a locating rod actuated by the cylinder toward and away from the locating guide member and engageable with the guide groove and a communicating member movable together with the locating rod and engageable with the stationary connector. In operation, the connectors are coupled to establish a communication between the fluid source and the servicing device after the locating rod has engaged with the guide groove thereby to locate the servicing device correctly. Because the locating rod and the communicating member are moved substantially in an integral manner by a single actuator, accurate and reliable locating of the servicing device may be accomplished.

Apparatus for locating a traveling-type servicing device in a

Method and apparatus for yarn piecing in a ringless spinning machine is provided, according to which yarn piecing is accomplished by unwinding a yarn from its package, rewinding a portion of the unwound yarn on to the package at one, definite position, cutting off the yarn end to a predetermined length, then introducing the cut end of the yarn into the spinning mechanism of the spinning unit, and then withdrawing the yarn from the spinning unit after the yarn end is connected with the fibers in the spinning mechanism.

Method and apparatus for yarn piecing in a ringless spinning machine

Yarns are pieced in a spinning machine utilizing an air stream, such as an open-end spinning machine or an air-jet spinning machine. For yarn piecing, an end of a yarn unwound from a bobbin is inserted into a twisting mechanism, and a sliver is newly supplied as a fleece so as to intertwine with the yarn end forming a pieced yarn portion. The thickness of the unwound yarn is detected by a detector and stored in a memory prior to insertion into the twisting mechanism. After the yarn and the sliver have been joined, the thickness of the pieced yarn portion is detected by the detector, and the detected thickness is compared with the stored thickness of the unwound yarn. If the thickness of the pieced yarn portion exceeds an allowable value as a result of such comparison, then the yarn is severed by a cutter, and thereafter a cut end of the yarn is pieced again with the fleece. Preferably, the sliver starts being supplied into the twisting mechanism at a timing advanced or delayed with respect to the previous timing of starting of the supply of the sliver when the yarn is to be pieced again with the fleece.

Method of piecing yarns in a spinning machine utilizing an air stream

A method and apparatus for supplying operational fluid to a traveling-type working machine, such as a yarn piecer or an auto-doffer, which serves a parent machine, such as a spinning frame. The working machine utilized in the present invention has a secondary fluid tank and at least one nozzle attached to an air cylinder. Prior to the working machine serving the parent machine, the nozzle is advanced by an air cylinder, operated by fluid supplied from the secondary fluid tank, so that it engages with one of the air intakes provided on the parent machine. Then operational fluid is introduced from a primary fluid source into the working machine through the engaged nozzle and air intake, and thereby the working machine carries out a specific operation for the parent machine. Simultaneously, the operational fluid is distributed to the secondary fluid tank in preparation for the next engagement of the nozzle and the air intake. According to the present invention, the working machine is free from the burden of a heavy and voluminous air compressor and a troublesome long connecting hose.

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Kariya, Japan

Takayuki Morita