AU785171B2 - The improvement to the modified mechanism of refrigerant filling frame - Google Patents

Description

1' THE IMPROVEMENT TO THE MODIFIED MECHANISM OF REFRIGERANT FILLING FRAME FIELD OF THE INVENTION The present invention relates to an improvement to the modified mechanism of refrigerant filling frame, particularly is that the knob switch is perpendicular to the plug joint. The bottom of the knob switch is composed of the sheath sleeve and the connecting rod, and the front of the plug joint is composed of two Teflon rings, one ball valve, one sleeve, and there is an access on the surface of the ball valve. Such that controlling of the to refrigerant can be more conveniently and reliably carried out.

DESCRIPTION OF THE PRIOR ART SKILL The conventional refrigerant filling frame as Fig. 1 shown, the entity 1 of the filling frame is rectangular. The front of the entity is installed with the mobile high pressure joint 21, mobile low pressure joint 22 and refrigerant can joint 23. The two sideward sides of the entity are vertically installed a vacuum pipe joint 231 and the left plug joint 24 and the right plug joint 25. The top side is installed with high pressure knob switch 26 and low pressure knob switch 27, and a light set 28.

Referring to Fig. 2, the surface of the filling frame entity 1 is formed r.Owith several screw holes 11, 12, 13, 14, 15, 16, 17 to be installed with the foregoing mobile high pressure joint 21, mobile low pressure joint 22, refrigerant can joint 23, left plug joint 24, right plug joint 25, high pressure knob switch 26, low pressure knob switch 27 and light set 28. Wherein each top side of the high pressure knob switch 26 and the low pressure knob switch 27 is respectively installed with knob 261 and 271 to conveniently slew it for adjustment. The light set 28 is composed with basal ring 281, light disc 282, protection ring 283 and nut locking ring 284, that is screwed into the top side center screw hole of the filling frame entity 1 to directly see the inner refrigerant filling situation of the entity by the light disc 282. And then we could decide the quantities of the refrigerant that pass through the mobile high pressure joint 21 and the mobile low pressure joint 22 into the mobile refrigerant can to accomplish filling refrigerant by adjusting the high pressure knob switch 26 and the low pressure knob switch 27.

Wherein above descriptions about the refrigerant filling frame that there exist defects as inconvenient on filling refrigerant implementation.

15 1. The high-low pressure knob switch is function as to control the S-refrigerant that guide in mobile high-low pressure joint is depended on the o.ooo: "...degree of the thread slew in. Such controlling way make users to do this is either slew too tight or too loose, so consequently is much more inconvenient in controlling refrigerant flow.

:i 2. When slew the high-low pressure knob switch, it need to slew several turns to make the refrigerant quantities flow in maximum in the inner entity refrigerant qualities, and also to slew several turns to make sure the refrigerant is entirely clogged not flow out. All are inconvenient in controlling.

3. The vacuum pipe joint and the refrigerant can joint are commonly used that causes the operator's inconvenience.

Owing to there exist defects of above descriptions on the conventional refrigerant filling frame, this present invention relates to the improvement on the defects in a long searching time.

SUMMARY OF THE INVENTION Accordingly, the invention provides an improvement to the modified mechanism of refrigerant filling frame. The invention improvement to the modified mechanism of refrigerant filling frame make the knob switch is perpendicular to the plug joint. The bottom of the knob switch is composed of 15 the sheath sleeve and the connecting rod. The front of the plug joint is composed of two Teflon rings, one ball valve, one sleeve, and there is an access on the surface of the ball valve. Accordingly, when the refrigerant is led in the entity by the refrigerant can, we could adjust the direction of the ball Svalve by the knob switch, such that to control the refrigerant quantities are led 20 in mobile high-low pressure joint easily.

ooooo Accordingly the invention improvement to the modified mechanism of refrigerant filling frame, we modify the mechanism of the knob switch and the plug joint, it makes users control conveniently and doubtlessly in the refrigerant flow by slewing the knob switch at random degree. It is the next purpose of this invention.

Furthermore, an independent vacuum pipe joint is provided for facilitating vacuum evacuation, this is one more object of the present invention.

A more complete understanding of these and other features and advantages of the present invention will become apparent from a careful consideration of the following detailed description of certain embodiments illustrated in the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 illustrates the conventional solid view of the refrigerant filling frame.

FIG2 illustrates the conventional solid exploded view of the refrigerant filling frame.

FIG3 illustrates the solid view of the refrigerant filling frame according to the present invention.

FIG.4 illustrates the solid exploded view of the refrigerant filling frame according to the present invention.

FIG.5 illustrates the combined cut away view of the refrigerant filling frame according to the present invention.

FIG.6 illustrates the second implementation example according to the present invention.

FIG7 illustrates the three dimensional exploded view of FIG.6.

FIG8 illustrates the third implementation example according to the present invention.

FIG9 illustrates the transverse cross sectional view of FIG. 6.

FIG. 10 illustrates a second embodiment of FIG. 9.

DESCRIPTION OF THE PREFERRED EMBODIMENT The conventional refrigerant filling frame as Fig.l, 2 shown, its mechanism and defects are described above, no more descriptions in here.

a. a The invention improvement to the modified mechanism of refrigerant filling frame is shown as Fig.3. The surface of the entity is also installed with the mobile high pressure joint 41, mobile low pressure joint 42, refrigerant can joint 43, left plug joint 44, right plug joint 45, high pressure knob switch 46, low pressure knob switch 47 and light set 48. Wherein it butt pipe between the refrigerant can joint 43 and the refrigerant can to lead refrigerant in and a vaccum pipe joint 431 is provided thereon, and it do between mobile high-low pressure joint 41,42 and mobile refrigerant bottle. The knob switch 46,47 are provided for controlling refrigerant flowing into the entity, through knob switch 46,47 and further controlling the refrigerant that is led in refrigerant bottle. And it relates to mobile high pressure joint 41, mobile low pressure joint 42, refrigerant can joint 43 and light set 48 that are all same as the conventional refrigerant filling frame on mechanism and basis, so no more descriptions in here. Only detail descriptions on improvement parts of this invention is following: The invention improvement to the modified mechanism of refrigerant filling frame as Fig.4 shown, it focus on left plug joint 44, right plug joint high pressure knob switch 47 and low pressure knob switch 47 to improve. And 15 as the high-low knob switch each other has the same mechanism, and the leftright plug joint do, so in accord with the figure, we describe the high pressure knob switch and the right plug joint as the example for convenient.

As the figure is shown, the high pressure knob switch 46 is composed 20 with one knob entity 51, sheath sleeve 53 and connecting rod 54. Wherein the *oo top side of the knob entity 51 there is the flat part 511, the inner of the knob entity 51 there is the sheath sleeve 53, the center of the sheath sleeve 53 is formed with through hole 531 and with thread 532 to screw in the screw hole 31 of the filling frame entity 3. The bottom side of the sheath sleeve 53 is installed with connecting rod 54, which being inserted into the central through hole 531 upward from lower end, the center of the connecting rod 54 is formed with screw hole 541 to screw combine with the knob switch 4b, and its outer side is jacketed the O-ring 542, and its bottom side is formed with clip slot 543.

;)Besides, position limiting pins 461, 471 are provided near the knob switches 46 and 47 respectively to define the turning angles of the two switches so as to make sure whether they are closed.

The front of the right plug joint 45 is composed with two Teflon rings 61, 62, one ball valve 63, one sleeve 64. Wherein the front of the right plug joint 45 is formed with thread part 451 to screw in the filling frame entity 3. The outer side of the thread part 451 is installed with O-ring 452.

The front of the right plug joint 45 is installed with sleeve 64. The center of the sleeve 64 is formed with shaft channel 641 whose middle section is formed with the smaller diameter of the internal ring 642. The one sideward side of the ooooo is internal ring 642 is formed with radial through hole 643. The radial through hole 643 is connected trough the mobile high-low pressure joint. The front of the sleeve 64 shores up the first Teflon ring 61, and the front of the first Teflon ring 61 is a ring shores up the ball valve 63. The top side of the ball valve 63 is formed with plate part 631 that provided the foregoing 20 clip slot 543 of the connecting rod's bottom to be wedged and to be rotated.

The surface of the ball valve 63 is formed with through hole 632, and its *another side shores up the second Teflon ring 62.

To implement as Fig. 5 shown, when the refrigerant from the refrigerant can joint 43 lead in the inner of the filling frame entity 3, we could see the inner refrigerant flow speed and quantities of the filling frame entity 3 by the light set 48. To twist the high-low pressure knob switch 46, 47, the connecting rod 54 would be tracked, and more the ball valve 63 rotates to be tracked. When the through hole 632 of the ball valve 63 is radial, it could not connect through the first and second Teflon rings 61, 62. And the refrigerant lead in the inner of the filling frame entity 3 could not flow through the through hole 632 of the ball valve 63, and then it could not flow into mobile high-low pressure joint 41, 42. When the through hole 632 of the ball valve 63 is axial, it could connect through the first and second Teflon rings 61, 62 and the sleeve 64. And the refrigerant lead in the inner of the filling frame entity 3 could flow through the through hole 632 of the ball valve 63, and then flow into the inner of the sleeve 64, and again flow into the mobile high-low pressure joint 41, 42 by the radial through hole 643 of the sleeve 64, and finally flow into the mobile refrigerant bottle.

Owing to the invention improvement to the modified mechanism of refrigerant filling frame, we could control the refrigerant flow by the through hole 632 position that is controlled by the ball valve 63 tracking the high-low pressure knob switch. It handles more conveniently, easily and exactly.

Besides, in the present invention, a second embodiment can be carried out as follows in addition to a first embodiment illustrated in FIG 3 to 5. As shown in FIG. 6, on the entity 3 of the refrigerant filling frame, there is added a vacuum knob switch 71 and an independent vacuum pipe joint 72 in addition to the mobile high pressure joint 41, mobile low pressure joint 42, the refrigerant can joint 43, the left plug joint 44, the right plug joint 45, the high pressure knob switch 46, the low pressure knob switch 47 and the light set 48.

The detailed construction of the second embodiment according to the present invention is shown in FIG. 7. As shown FIG. 7, the components disposed under the vacuum knob switch 71 are similarly the high and low pressure knob switches 46 and 47, therefore, the detailed description about those components will be omitted. From the drawing it can be further understood that whether the operation of vacuum evacuation is shall be preformed or not is determined by a ball valve 73 installed under the vacuum knob switch 71 in similar way as the first embodiment. Besides, the position limiting 711 defines its turning angle thereby confirming whether it is closed.

As shown in FIG. 8, for confirming the refrigerant pressure and the 15 vacuum pressure, a high pressure gauge 81 and a vacuum low pressure gauge 82 are installed are symmetrically installed at two ends of the entity 3 of the refrigerant filling frame. From FIG. 9, it is clear that a main passage 91 is formed at the center portion of the entity 3, the main passage 91 is communicated with a plurality of through holes 92, 93, 94, 95 for conjoining the mobile high pressure joint 41, the refrigerant conjoint 43, the mobile low pressure joint 42, and the vacuum pipe joint 72 respectively. The rear end of the main passage 91 is communicated with two through holes 96, 97 for installation of the high pressure gauge 81 and the vacuum low pressure gauge 82 respectively. Meanwhile, the through hole 97 and the main passage 91 are communicated with each other by a slanted sub-passage 98.

When proceeding vacuum evacuation, the high low pressure refrigerant bottles are evacuated by opening the high and low pressure knob switches 46 and 47, at this time, the vacuum evacuation pressure can be read from the vacuum low pressure gauge 82. The vacuum knob switch 71 and the low pressure knob switch 47 are closed after completion of vacuum evacuation thereby beginning high pressure refrigerant filling from the refrigerant can, and the pressure of high pressure refrigerant can be read from the high pressure gauge 81. Similarly, low pressure refrigerant filling can be proceeded by closing the vacuum knob switch 71 and the high pressure knob switch 46, the pressure of low pressure refrigerant can be read from the vacuum low pressure gauge 82. With this construction the second embodiment of the present invention is carried out precisely. Alternatively, as shown in FIG. 10, the subpassage 98, which communicates with the through hole 97 can be replaced by 15 communicating the first vertical sub-passage 981 and the second vertical subpassage 982.

ooooo In conclusion, the present invention is an improvement to the modified mechanism of refrigerant filling frame, it is conveniently to adjust and control, and it exactly improves the defects of the conventional refrigerant filling frame.

The invention is not yet implemented publicly, so it does not violate the patent law, its my honor to accept your adoption.

While the invention has been described in the context of a preferred embodiment, it will be apparent to those skilled in the art that the present invention may be modified in different ways and assume many embodiments other than that specifically set out and described above. Accordingly, it is intended by the appended claims to cover all modifications of the invention which fall within the true spirit and scope of the invention.

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Claims (6)

1. A refrigerant filling frame, including: a frame body having installed therein, a mobile high pressure joint, mobile low pressure joint, refrigerant can joint, left plug joint, right plug joint, high pressure knob switch, low pressure knob switch and light set; said frame body having a main passage extending therethrough and a butt pipe extending between the main passage and the refrigerant can joint to lead refrigerant into the main passage for communication of refrigerant between a refrigerant can connected to the refrigerant can joint and a mobile refrigerant bottle coupled to either one or both of the high and low pressure joints, the filling frame further including a knob switch to control a refrigerant quantity that is led to between the refrigerant can and the high and low pressure joints and to control a refrigerant quantity of the refrigerant bottle, said high pressure knob and low pressure knob each include a knob entity, a sheath sleeve and connecting rod, the lower end of the knob entity being configured to engage the connecting rod to enable actuation thereof, and the sheath sleeve having a central through hole; a bottom periphery of said sheath sleeve being configured to engage a hole in the filling frame body, sheath sleeve being configured to retain the connecting rod within the central through hole, an outside of the connecting rod being by an 0-ring, and its bottom side including a formation configured to engage a portion of a ball valve to enable rotation thereof; each of said left and right plug joints including, two polytetrafiuoroethylene (PTFE) rings, one ball valve, and one sleeve, wherein the periphery of each plug joint is formed with thread to screw into a stepped bore portion of the main passage formed in the filling frame body and is configured to receive an 0-ring to sealingly engage the frame body, said sleeve being positioned inward of the plug joint and having an axial bore formed therein and a radially narrowed central portion having a radial through hole extending between the axial bore of the sleeve and an outside surface of the narrowed portion; the first of the PTFE rings is mounted between the sleeve and the front of the first ball valve; the top side of the ball valve is formed with an formation to engage the connecting rod to allow rotation of the ball valve; the bail valve further including a 13 COMS ID No: SBMI-04681188 Received by IP Australia: Time 16:04 Date 2006-09-06 06/09/2008 18:10 5/9 004652099 through hole lying substantially perpendicular to its axis of rotation by the connecting rod; the second PTFE ring is mounted between the ball valve and the step formed in the main passage, the ball valve being rotatable relative to the axial bore of the sleeve by actuation of the respective knob switch to thereby control the flow of refrigerant through the respective high or low pressure joint of the filling frame.

2. The refrigerant filling frame according to claim 1, wherein the frame body additionally has an independent vacuum pipe joint and corresponding knob switch mounted therein.

3. The refrigerant filling frame according to claim 1, which further includes one or more pressure meters for detecting the refrigerant pressure and/or the vacuum evacuation pressure.

4. The refrigerant filling frame according to claim 3, wherein a main passage formed in said frame entity and communicating with each through hole of said joints further includes a slanted or vertical sub-passage.

5. An improvement to the modified mechanism of refrigerant filling frame substantially as hereinbefore described with reference to any one of the embodiments depicted in Figures 3 to 10 of the accompanying drawings. Dated

6 September 2006 oo* :**.1Freehills Patent Trade Mark Attorneys Patent Attorneys for the Applicant/s: RIGHTWAY INDUSTRY CO LTD 0 oooo oo *ooo oooo 14 COMS ID No: SBMI-04681188 Received by IP Australia: Time 16:04 Date 2006-09-06