A valve combined is integrated to the service valve with quick coupling and an internal core

The circulating gas on the cooling system is discharged because of leakage on the plumbing and valves, it influences negatively about cooling capacity. Furthermore, on the cooling system the plumbing can be discharging necessary due to for the maintenance or changing for cooling fluid is gather moisture timely. Therefore, the gas should be charged completely or vacuum the system. The gas charging valves are used to charge needed gas on the cooling system gas plumbing that discharged gas from it. It is a core inside of the gas charging valve. The core is a valve which has opening- closing mechanism and gasket for sealing. The core stem is pressed by the gas way opened from the core, the charging of gas is completed ( figure 1 and figure 2 ). The core is also preventing discharge gas from plumbing side. Namely, they are working one direction as check valves.

The gasket is damaged or exposed to continual under pressure and degradation which is provided sealing of the core. In the other hand, the spring cannot be done transmit pressing on the core stem. In situation such as this, the core does not work and the valve is leakage gas the case in point. The core should be changed.

The manually operated opening-closing valve is attached to the gas charging valve. In this way, the core is prevented be exposed to continual under pressure both of the core can be changed and while the core does not work gas way is closed by this way double safety is purposed.

Two Patent Applications about the service valves are made comparison with invention below.

The Patent Application KR 20110021352 ( A ) and its title is "Service valve for air conditioning system and connection structure thereof related to the gas charging valve have two outlets, service valve is closed one outlet the other one is remain opened and if the core does not work discharging of gas is mentioned from opened outlet. The valve body of the core side connection is done by a nut. But, the invention has the quick coupling connection.

The Patent Application WO 2011/047224A1 and its title is "High flow service valve" related to the gas charging valve have two outlets again, as is seen on the fig. 6 and fig. 7, there are two service valves with 90° angle position each other's. One of them is closed to the core, the other one is closed to the one outlet. The other outlet is opened and if the core is opened, discharging of gas is mentioned from opened outlet. The difference from The Patent Application KR 201 10021352 ( A ), the outlets are not with 90° angle position each other's. They are parallel and their axes are made a distance from each other, it is described "z-flow service valve".

The body is described old body, quick coupling surface on the body is described old body quick coupling surface in the prior art.

The core located side on the body is described valve inlet and the other side is described valve outlet.

The part numbers short describes and descriptions :

1- old body

1- 1 screw wrench

1 -2 old body quick coupling connection surface

2- body

2-1 stem contact point

2- 2 quick coupling connection surface

3- stem

3- 1 stem conic surface

4- control spindle

4-1 control spindle screw wrench

5- o-ring

6- nut

7- gasket

8- cover

9- core

9- 1 core stem

9- 2 core valve

10- quick coupling

10-1 quick coupling stem

50- gas charging valve

60- service valve spindle group

70- service valve combined In figure 1 and figure 2, the prior art is shown with fully cross-section.

In figure 1 : The prior art is shown with gas charging valve's ( 50 ) fully cross-section and quick coupling ( 10 ) fully cross-section partially. The quick coupling ( 10 ) is passed to the old body ( 1 ) by arrow direction.

In figure 2 : It is shown that the quick coupling ( 10 ) is passed to the gas charging valve ( 50 ) with fully cross-section. The core ( 9 ) is opened position.

In figure 3 : It can be seen that the quick coupling ( 10 ) is assembled to the service valve combined ( 70 ) with fully cross-section.

In figure 4 : It is shown that the service valve spindle group ( 60 ) with fully cross- section.

In figure 5 : It is shown that the core ( 9 ) and the service valve (70 ) are closed position. There are a space between quick coupling stem ( 10.1 ) and core stem ( 9.1 ). The core stem ( 9.1 ) is free and core ( 9 ) is closed position. The stem ( 3 ) is moved with downside and abut to the body ( 2 ) and the service valve ( 70 ) is closed position. In figure 6 : It is shown the detail A at the figure 5 with scale up. The stem conic surface ( 3.1 ) is abut to the stem contact point ( 2.1 ) and the gas way is closed. It is closed position of the service valve ( 70 ).

In figure 7 : It is shown that the core ( 9 ) and the service valve (70 ) are opened position. The cover ( 8 ) is removed. The control spindle ( 4 ) is provided to move upper side by the screw wrench ( 4.1 ) is turned left side. The stem conic surface ( 3.1 ) is moved away from the stem contact point ( 2.1 ) and gas way is opened. The quick coupling ( 10 ) is assembled. The quick coupling stem ( 10.1 ) is moved with arrow direction and made press to the core stem ( 9.1 ). Then core valve ( 9.2 ) is opened and provided charging gas to the inside or vacuum the system.

In figure 8 : It is shown the detail B at the figure 7 with scale up. The stem conic surface ( 3.1 ) is moved away to the stem contact point ( 2.1 ) and the gas way is opened. It is opened position of the service valve ( 70 ).

In figure 9 : It is shown that the core is closed position ( 9 ) and the service valve (70 ) is opened position. The stem conic surface ( 3.1 ) is moved away to the stem contact point ( 2.1 ) and the gas way is opened. The service valve (70 ) is opened position. Gas is arrived through to the core valve ( 9.2 ). But, the core ( 9 ) is closed position because of the core stem ( 9.1 ) is free. Therefore gas does not charge to the outside. In figure 10 : It is shown the detail C at the figure 9 with scale up. The stem conic surface ( 3.1 ) is moved away to the stem contact point ( 2.1 ) and the gas way is opened. It is opened position of the service valve ( 70 ).

In figure 11 : It is shown that the service valve ( 70 ) is closed in case of the core ( 9 ) does not work. In spite of the core stem ( 9.1 ) is moved away, the core ( 9 ) is not remain at the closed position and it cannot be work any reason. In that case, the cover (8) is removed. The control spindle ( 4 ) is provided to downside by the screw wrench (4.1) is turned right side. The stem conic surface ( 3.1 ) is abut to the stem contact point ( 2.1 ) and gas way is closed. And discharging of gas is prevented.

In figure 12 : It is shown the detail D at the figure 11 in case of the core ( 9 ) does not work with scale up. In spite of the core stem ( 9.1 ) is moved away, the core valve (9.2) is opened position it does not remain at the closed position and cannot be work.

In figure 13 : It is view of upper way of the service valve ( 70 ).

In figure 14 : It is shown that the view of upper way of the service valve ( 70 ), the core ( 9 ) side of valve inlet can be positioned by the valve outlet axis along with left side and right side wide angle.

This invention is related the service valve in the cooling system that the quick coupling of valve is provided gas charging by its core manually operated opening-closing valve is attached to the gas charging valve. In this way, that valve is made double safety (figure 3, figure 5, figure 7, figure 9, figure 11 and figure 13).

For the service valve (70 ) is closed the cover ( 8 ) is removed. The control spindle ( 4 ) is provided to downside by the screw wrench ( 4.1 ) is turned right side. The stem conic surface ( 3.1 ) is abut to the stem contact point ( 2.1 ) and gas way is closed. The service valve (70 ) and the core ( 9 ) are closed position ( figure 5 and figure 6 ).

For the service valve ( 70 ) is opened the cover ( 8 ) is removed. The control spindle (4) is moved to upper side by the screw wrench ( 4.1 ) is turned left side. The stem conic surface ( 3.1 ) is moved away from the stem contact point ( 2.1 ) and gas way is opened. The quick coupling ( 10 ) is connected to the quick coupling connection surface ( 2.2 ). The quick coupling stem ( 10.1 ) is moved with arrow direction and made press to the core stem ( 9.1 ). Then core valve ( 9.2 ) is opened and provided charging the gas to the inside. It is shown that gas is passed away with arrows ( figure 7 and figure 8 ). For the service valve ( 70 ) is opened the cover ( 8 ) is removed. The control spindle (4) is moved to upper side by the screw wrench ( 4.1 ) is turned left side. The stem conic surface ( 3.1 ) is moved away from the stem contact point ( 2.1 ) and gas way is opened. But, gas does not charge to the outside because of the core ( 9 ) is closed position. It is shown that gas is turned back from in front of the core valve ( 9.2 ) with arrows ( figure 9 ).

The quick coupling ( 10 ) is although assembled and the core stem ( 9.1 ) is moved away, in case of the core ( 9 ) does not work and core valve ( 9.2 ) is opened position, the cover ( 8 ) is removed. The control spindle ( 4 ) is provided to downside by the screw wrench ( 4.1 ) is turned right side. The stem conic surface ( 3.1 ) is abut to the stem contact point ( 2.1 ). The service valve ( 70 ) is closed. And discharging of gas is prevented. It is shown that gas is turned back from stem conic surface ( 3.1 ) with arrows ( figure 11 and figure 12 ). In this way, the core ( 9 ) can be possible to changed. The service valve ( 70 ), its body ( 2 ) can be made that the core ( 9 ) side of valve inlet can be positioned by the valve outlet axis along with left side and right side wide angle ( figure 13 and figure 14 ).

This invention can be applied to the gas charging valves which have a core are used to charge on the cooling system gas plumbing that discharged gas from it.