Variable Displacement Compressor Functional Test Machine

Abstract

A functional test machine for a variable displacement compressor includes a chuck device supported on a stand for grasping a variable displacement compressor, a crankcase pressure (Pc) gauge, a discharge pressure (Pd) gauge, and a suction pressure (Ps) gauge supported on a control panel of a table and connected to the compressor, and a control valve device includes a passage formed in a tubular member and coupled to the discharge pressure (Pd) gauge, and a valve member disposed in the tubular member for controlling an air flowing through the passage of the tubular member. The chuck device includes three claws for holding the compressor.

Description

BACKGROUND OF THE INVENTION1. Field of the Invention

[0001] The present invention relates to a compressor test machine, and more particularly to a variable displacement compressor functional test machine including a mechanism for holding and testing various kinds of variable displacement compressors and for effectively testing the variable displacement compressors.2. Description of the Prior Art

[0002] Various kinds of typical variable displacement compressors have been developed and provided for being used in various vehicles. For example, U.S. Pat. No. 7,381,031B2 to Kawaguchi et al., U.S. Pat. No. 7,452,192B2 to Hirota, U.S. Pat. No. 7,530,797B2 to Ito et al., and U.S. Pat. No. 9,863,411B2 to Saeki et al. discloses several of the typical variable displacement compressors each of which comprise a pulley of different or various diameters, such as 100 mm, 110 mm, 115 mm, 120 mm, 130 mm, 140 mm etc., and of different or various troughs or grooves, such as four grooves, five grooves, six grooves, eight grooves, ten grooves, twelve grooves etc., and for the typical variable displacement compressors, various kinds of typical test machines are required to be developed and provided for testing particular compressors, but may not be used for testing different compressors.

[0003] The present invention has arisen to mitigate and / or obviate the afore-described disadvantages of the conventional variable displacement compressor test machines.SUMMARY OF THE INVENTION

[0004] The primary objective of the present invention is to provide a variable displacement compressor functional test machine including a mechanism for holding and testing various kinds of variable displacement compressors and for effectively testing the variable displacement compressors.

[0005] In accordance with one aspect of the invention, there is provided a functional test machine for a variable displacement compressor comprising a stand, a chuck device supported on the stand, the variable displacement compressor being supported on the stand with said chuck device, a table supported on the stand, and the table including a control panel, a crankcase pressure (Pc) gauge, a discharge pressure (Pd) gauge, and a suction pressure (Ps) gauge supported on the control panel of the table and connected to the compressor, and a control valve device including a tubular member, and including a passage formed in the tubular member and coupled to the discharge pressure (Pd) gauge for receiving an air from the discharge pressure (Pd) gauge, and a valve member disposed in the tubular member and engaged into the passage of the tubular member for controlling an air flowing through the passage of the tubular member.

[0006] The chuck device includes three claws for holding the compressor. The compressor includes a pulley engaged with the claws.

[0007] The compressor includes a clutch and coil coupled to the control panel. The compressor includes a control valve coupled to the control panel.

[0008] Further objectives and advantages of the present invention will become apparent from a careful reading of the detailed description provided hereinbelow, with appropriate reference to the accompanying drawings.BRIEF DESCRIPTION OF THE DRAWINGS

[0009] FIG. 1 is a perspective view of a variable displacement compressor functional test machine in accordance with the present invention;

[0010] FIG. 2 is a plan schematic view illustrating the parts or elements of the variable displacement compressor functional test machine illustrating the operation of the variable displacement compressor functional test machine;

[0011] FIG. 3 is a partial perspective view illustrating a mechanism for holding and grasping various kinds of variable displacement compressors, and illustrating the operation of the variable displacement compressor functional test machine.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0012] Referring to the drawings, and initially to FIG. 1, a variable displacement compressor functional test machine in accordance with the present invention comprises a workbench or stand 10, and a chuck device 11 disposed or supported on the stand 10, and also shown in FIGS. 2 and 3, the chuck device 11 includes three claws 12 for holding or grasping various kinds of variable displacement compressors 30, particularly the pulley 31 of the variable displacement compressor 30, in which the pulley 31 of the variable displacement compressor 30 may include different diameters, such as 100 mm, 110 mm, 115 mm, 120 mm, 130 mm, 140 mm etc., and may include different troughs or grooves, such as four grooves, five grooves, six grooves, eight grooves, ten grooves, twelve grooves etc.

[0013] As shown in FIGS. 1 and 2, the functional test machine includes a table 50, three gauges 51, 52, 53 representing crankcase pressure (Pc), discharge pressure (Pd), and suction pressure (Ps) respectively disposed or supported on the table 50, such as disposed or supported on a control panel 54 of the table 50 and connected or coupled to the compressor 30 similar to that of the typical variable displacement compressors and for controlling purposes, for example, the control panel 54 is connected or coupled to the compressor 30, particularly the clutch and coil 32 of the compressor 30 for sending and / or receiving a direct current signal to and from the clutch and coil 32 of the compressor 30, and connected or coupled to the electrical control valve 33 of the compressor 30 for sending and / or receiving a pulse-width modulation (PWM) signal to and from the electrical control valve 33 of the compressor 30. An air pressure regulator 55 is connected or coupled to the table 50, such as the suction pressure (Ps) gauge 53 for regulating to 32 psi, for example.

[0014] As shown in FIG. 2, the functional test machine further includes a control valve device 70 having a tubular member 71 and having a passage 72 formed therein and connected or coupled to the discharge pressure (Pd) gauge 52 for receiving an air therefrom, the control valve device 70 further includes a valve member 73 disposed in the tubular member 71 of the control valve device 70 and engaged into the passage 72 of the tubular member 71 and arranged for controlling the air flowing through the passage 72 of the tubular member 71, and the valve member 73 of the control valve device 70 is connected or coupled to the control panel 54 of the functional test machine for sending and / or receiving a control signal to and from the control panel 54 of the functional test machine. The control valve device 70 may be used for changing or controlling the drain air flowing out through the discharge pressure (Pd) gauge 52 while the compressor 30 is working.

[0015] Accordingly, the variable displacement compressor functional test machine in accordance with the present invention includes a mechanism for holding and testing various kinds of variable displacement compressors and for effectively testing the variable displacement compressors.

[0016] Although this invention has been described with a certain degree of particularity, it is to be understood that the present disclosure has been made by way of example only and that numerous changes in the detailed construction and the combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention as hereinafter claimed.

Claims

1. A functional test machine for a variable displacement compressor comprising:a stand,a chuck device supported on the stand,the variable displacement compressor being supported on the stand with said chuck device,a table including a control panel,a crankcase pressure (Pc) gauge, a discharge pressure (Pd) gauge, and a suction pressure (Ps) gauge supported on the control panel of the table and connected to the compressor, anda control valve device including a tubular member, and including a passage formed in the tubular member and coupled to the discharge pressure (Pd) gauge for receiving an air from the discharge pressure (Pd) gauge, and a valve member disposed in the tubular member and engaged into the passage of the tubular member for controlling an air flowing through the passage of the tubular member.

2. The test machine as claimed in claim 1, wherein the chuck device includes three claws for holding the compressor.

3. The test machine as claimed in claim 2, wherein the compressor includes a pulley engaged with the claws.

4. The test machine as claimed in claim 1, wherein the compressor includes a clutch and coil coupled to the control panel.

5. The test machine as claimed in claim 1, wherein the compressor includes a control valve coupled to the control panel.

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