Stroke sensing apparatus for a variable displacement. The success of the compressor design in compressing gas depends on the piston ring assembly design. This compressor design uses oilfree lubrication method. In order to analyze the complicated motion of each moving. An important feature of the invention resides in the design to balance the forces acting on the wobble plate. In this paper we provide a detailed analysis on a fourcylinder wobble plate compressor in the field of the motion simulation and dynamics. The wobble plate type compressor of claim 3 wherein said drive shaft also includes an axis which can align with said second central axis when said cylindrical member is inclined at a predetermined angle. Dropin replacement for your current wobble and swash plate compressors. The design of the swash plate compressor is complex so that it requires.
International compressor engineering conference school of. One of their most important advantages is the ease of use of the opposed piston layout, which has recently received much attention. A new design of variable displacement compressor ijert. The aim of this paper is to shed a new light on the forgotten concept of axial engines with wobble plate mechanism. Jun 16, 2005 wobble pumps are available in a wide range of sizes. To compensate for the wobbling and increase the pumps efficiency, the piston is sealed to the cylinder by a flanged disk cup, which forms both axial and radial seal and a mechanical guide for the piston.
The model 8003 from rietschle thomas weighs less than 7 oz, is rated at 12psi maximum pressure, and has 0. A new multistage symmetrical wobble plate compressor has been developed with a working pressure from 3 to 250 bars for compressing natural gas for vehicles ngv. Analytical model for a 10 cylinder swash plate electric compressor. Us3959983a variable capacity wobble plate compressor. This paper describes the procedures for obtaining the optimum number of stages for this. The mechanism of a variable wobble plate compressor. The optimization is first performed on a simplified 2d model, where it is possible to find analytical sensitivities, and the results indicate that the mechanism can be optimized.
Request pdf testing and modelling of an automotive wobble plate compressor. In this new symmetrical multistage wobble plate compressor, an oilfree. Models are available in fixed and variable displacement types. Many residential central heat pump and air conditioning systems and a few automotive air conditioning systems employ. A case study of the design of a new symmetrical wobble plate compressor is discussed to validate the proposed models in monitoring and controlling the stability of design tasks under the influence of unexpected disturbances. A rodeccentric assembly that rotates about the shaft causes the piston end to tip or wobble, providing the origins for the trademark name. The preferred configuration for a piston compressor soon moved to a double acting swash plate design. Swash plate drive is comparatively complicated and costly for the provision of slipper joint of piston ends with the rotary swash plate.
Compact compressors for use in low horse power applications. Displacement internally controlled by pressure valve. Pdf design methodology and dynamic simulation of fixed. A controlled, variable displacement, wobble plate compressor includes a pivotable wobble plate driven through an improved drive and support linkage including a universal joint and having its pivot point offset from the axis of the drive shaft so that at the no stroke position the pistons are all disposed at their topdeadcenter positions. Refrigerant intake and compression methods are almost the same as those for the fixed displacement swash plate compressor. Variable displacement swash plate air conditioning compressor. Instructor manual all correct answers to chapter questions and quizzes. Design and development of multistage symmetrical wobble. Therefore in the reciprocating compressor, the valve assembly is the main design parameter in order to improve the compressor performance. This new compressor design inherits the advantages of the wobble plate and the swashplate compressor which are compact and able to operate at high operating speed. Fig 3 v7 delphi swash plate variable displacement compressor low output.
An angled yoke on the driveshaft causes the plate to wobble when the shaft rotates,driving the pistons back and forth in their bores. Light weight, small size, compact structure, put the wobble plate compressor widely used. A new compressor design for natural gas refueling appliance has been developed which is the symmetrical multistage wobble plate compressor. The wobble plate type compressor of claim 3 wherein the apex angle of said first and second right circular cones is approximately 39. Optimization of the rigid body mechanism in a wobble plate. The qprv rotary vane compressor is available now and being distributed to oem dealers through the united states, europe, south america and asia. A mechanical model of an axial piston machine diva. The mechanism is a compressor, which is modeled as a multibody system. As the shaft rotates, the swash plate that is integrated with the shaft converts this rotational movement into reciprocating movement of the pistons, which draw and compress the refrigerant gas. A controlled, variable displacement, wobble plate compressor includes a pivotable wobble. The potential of wobble plate opposed piston axial engines.
It has an axial design with a wobble plate, which ensures a long service life. Wobble plate type compressor with variable displacement. This paper presents the optimal design method of suction valve and discharge valve of swash plate compressor. This design eliminates the multiple reciprocal pistons, ball joints and swash plate of a conventional barrel engine but crucially depends on effective sealing provided by sliding and rotating surfaces. As a basic manufacturer, everco hd identifies flaws and deficiencies in o. Efficiency of the indicated process of co2compressors. Adams since exporting cadmodels to adams require a great amount of manual. Automotive air conditioning compressors for cabin cooling are nowadays mostly based around the axial piston pump design others are based on the scroll compressor or rotary vane pump ones instead in order to contain their weight and space requirement in the vehicles engine bay and reduce vibrations. Pdf optimized design of home refueling appliance hra. Another improvement for this compressor design is the use of oilfree lubrication concept, thus minimising maintenance needed. The material in this handout is designed to accompany the power point for the air conditioning update class.
This compressor is intended for natural gas refueling application which requires high pressures, utilizing five stage compressions to raise the pressure from 3 bars to 206 bars. Dynamic behavior of a variable displacement wobble plate. Mar 25, 2005 the performance of control valve is analyzed in this paper in order to study characteristics of the variable displacement wobble plate compressor. Durable wobble plate compressors world class quality smoother 7 cylinderdesign reduced pulsations. Sandens fixed displacement wobble plate compressors. The forces acting on the control valve are analyzed and the mathematical model to analyze its performance is developed. Testing and modelling of an automotive wobble plate compressor. Wobble plate compressors are well used in air conditioning for highclass automobiles. Numerical analysis on the performance of control valve in. The compressor model describes in this paper is a module of software package developed for the design and simulation of automotive airconditioning systems. Modeling of wobble plate compressors used in automotive.
The following is an outline of the swash plate type compressor, which is a representative type of reciprocating compressor. The motion simulation is the main part of ugmotion module, which will help us make the complex kinematic analysis, dynamic analysis and design simulation for. Straight talk on wobblepiston pumps machine design. Pdf optimized design of home refueling appliance hra with. Wobble plate compressors offer the best value in cost and durability. In either form the axial or barrel engine can be derived as a cam engine or swashplate or wobble plate engine. Request pdf testing and modelling of an automotive wobble plate compressor wobble plate compressors are well used in air conditioning for highclass automobiles. This paper describes the design concept, development and experimental work of the newly developed symmetrical multistage wobbleplate compressor. Tcci manufacturing introduces first rotary vane compressor. That was the case with almen wobble plate design 19171920, where. Durable wobble plate compressors world class quality smooth 5 cylinder design model qp508 qp5h09 qp5h11 qp5h14 displacement 8 cc 87 cc 108 cc 8 cc no. International compressor engineering conference school. A study of designing 35rt aluminum alloy scroll compressor, yuehju tang, chunchung yang, and yuchoung chang.
New symmetrical multistage wobble plate compressor, ardiyansyah syahrom, md. Depending on the design,the pistons are driven by a wobble plate or a swash plate. The functional elements of a product are the individual operations and transformation that contribute to the overall performance of the product 2. This compressor design is the newest variation of the axial reciprocating piston compressor.
Represent 90% of compressors sold in the hd market. Stroke sensing apparatus for a variable displacement compressor. Proposed symmetrical wobble plate compressor concept 2. In a wobble plate compressor,the pistons are connected to the plate with short push rods. Air conditioning updates class instructor handout consulab. Alliance introduces reciprocating, swash plate, wobble plate, variable, and air brake compressor designs.
This compressor concept can also be used to compress other types of industrial gases. Elmers wood beam engine is a nod to james watts original steam engine design. Estimation of shaft torque is important for design of the driving motor and sizing of the. Ac compressor drive ring inside the air conditioners refrigerant compressor is a drive ring made of a friction material that is mounted to both sides of the swash or wobble plate. Piston ring assembly for a new natural gas vehicle. Carefully tighten the 632 set screw firmly on the shaft with. New symmetrical multistage wobbleplate compressor core.
The present study examines the dynamic behavior of a variable displacement wobble plate compressor which makes it possible to control the cooling capacity continuously. Tcci manufacturing, a world leader in compressor technology, including reciprocating, swash plate, wobble plate, and variable compressor designs, will display their latest innovative solutions at the 2020 macs training event and trade show, february 1922 in nashville, tennessee. Elmers wobble plate engine uses a stationary cylinder with a wobbline valve plate. A test bench is set up to get the steady and dynamic performance of control valve. Then, according the results of the analysis, we program. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed. Swash plate compressors are widely employed in mobile refrigeration and air conditioning applications due to.
The present invention is directed to an improved low cost sensing apparatus for a swash or wobble plate compressor that requires no modifications in compressor design or operation, and which provides a repeatable and accurate measure of compressor stroke. Variable displacement swash plate air conditioning. Based on the existing design, a new concept is introduced and developed. The variables of variable displacement ac compressors vehicle. A scroll compressor also called spiral compressor, scroll pump and scroll vacuum pump is a device for compressing air or refrigerant. The wobble plate compressor is chosen as an example in order to illustrate the modeling method. Further, the multistage compression system has been configured in order to enable the compressor to compress gas to a very high pressure.
Displacement can be varied from 5% 100% for maximum efficiency. Pdf swash plate compressor is widely used in automotive air conditioning industry for its light weight, small size and compact structure. Swash plate compressor, ecv, valve activation, refrigerant flow and. Dropin replacement for your current wobble and swash plate. Leave a small gap, about 1 16 the thickness of the 1 16 hex key wrench for the set screws between the crank disk and the valve plate. Superior nvh characteristics less noise, vibration and harshness by design dualvalve plate construction provides smooth compression and high efficiency directmount, earmount and customdesigned compressor bodies durable and reliable compressors available for the toughest conditions in the world model type wobble plate. Introduction the design of a complex product often involves. It is used in air conditioning equipment, as an automobile supercharger where it is known as a scrolltype supercharger and as a vacuum pump. Motion simulation and dynamic analysis of a four cylinder. For use in heavyduty truck and vocational vehicles. It is suitable for optimizing the design of expander. In this article we provide a detailed analysis on the wobble plate compressor in. The continuous cooling capacity control is achieved by the complicated motion of the piston, the piston rod, the wobble plate, the rotating journal and the drive shaft.
Also the displacement range of vehicle compressor is about from 90cc to 180cc. Pdf new symmetrical multistage wobbleplate compressor. The alliance ac compressor program is updated to provide the dtna dealer network. Tcci manufacturing introduces innovative dropin replacement. Systemlevel design a product can be thought of in both functional and physical terms. Nor musa, zair asrar ahmad, and ainullatf abdul latif. Put the flywheel on the other end of the crankshaft, making sure the flywheel is pressed tightly against the valve plate. Nor musa 2, wan ali wan mat 2, ainullotfi abdul latif 4, analysis on antirotating mechanism of new symmetrical wobble plate compressor, suction and discharge flow analysis in new multistages symmetrical wobble plate compressor. Introduction the symmetrical multistage wobble plate compressor is developed from the existing singlesided wobble plate compressor.
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