KR100637387B1 - Oil charger for air conditioner - Google Patents

Abstract

The fluid filler of the present invention includes an upper cap having an upper nipple integrally formed thereon and a protrusion formed at a central portion of the lower portion thereof, and having a through hole through the upper nipple and the protrusion formed therein; A connector corresponding to the protrusion is formed, and the coupling hole is screwed to the protrusion; A cylinder coupled to a lower portion of the connector and manufactured of a polycarbonate material; A lower cap coupled to a lower portion of the cylinder and having a fastening hole formed at a central portion thereof; A lower nipple screwed to the fastening hole and installed with a valve in a fluid movement path formed at a central portion thereof; And a through bolt penetrating the lower cap and passing through the cylinder to be bolted to the connector to integrate the connector and the cylinder and the lower cap.

Air conditioner, oil, filling, cylinder, polycarbonate, refrigerant

Description

Fluid charger for air conditioner {OIL CHARGER FOR AIR CONDITIONER}

1 is an exploded longitudinal sectional view showing a fluid charger according to a first embodiment of the present invention;

2 shows a scaler installed in the fluid charger of FIG.

Figure 3 is an exploded longitudinal sectional view showing a fluid charger according to a second embodiment of the present invention.

Figure 4 is an exploded longitudinal sectional view showing a fluid charger according to a third embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

1: upper cap 3: lower cap

5 connector 7 cylinder

9: upper nipple 27: through bolt

39: lower nipple 41: valve

TECHNICAL FIELD The present invention relates to a fluid charger for an air conditioner, and more particularly, to a fluid charger for an air conditioner for injecting fluid (refrigerant or oil) at a high pressure portion or a low pressure portion of an air conditioner.

In general, an air conditioner is a device that maintains an ambient temperature at a desired level using a change in state of a refrigerant generated during a refrigerant circulation process.

These devices use evaporators, radiators, expansion valves and compressors, and circulates oil mixed with refrigerants for smooth operation of components during circulation.

In particular, the oil should always be kept in an appropriate amount and cleanliness to prevent wear and smooth operation of the refrigerant compression section of the air conditioner compressor.

Therefore, it is necessary to check the condition of the oil to determine whether it is replaced, and to supply new oil when the condition is contaminated so that it cannot be used.

In the conventional apparatus for supplying oil, the oil storage container is made of aluminum, so it is not easy to determine the amount of oil to be filled therein.

In addition, if there is insufficient refrigerant in the air conditioner, the refrigerant is supplied by using the refrigerant supply device, and when the oil is filled, the oil is supplied by using an oil filling device separate from the refrigerant supply device, thereby assisting the management of the air conditioner. There is a problem that they are complicated.

The present invention is to solve the above disadvantages, to provide a fluid charger configured to check the state and the amount of the injected oil.

Another object is to provide a fluid charger configured to charge not only oil but also refrigerant.

A fluid charger according to a first embodiment of the present invention for achieving the above technical problem,

An upper cap in which an upper nipple is integrally formed and a protrusion is formed in a central portion of the lower portion, and a through hole penetrating the upper nipple and the protrusion is formed; A connector corresponding to the protrusion is formed, and the coupling hole is screwed to the protrusion; A cylinder coupled to a lower portion of the connector and manufactured of a polycarbonate material; A lower cap coupled to a lower portion of the cylinder and having a fastening hole formed at a central portion thereof; A lower nipple screwed to the fastening hole and installed with a valve in a fluid movement path formed at a central portion thereof; And a through bolt penetrating the lower cap and passing through the cylinder to be bolted to the connector to integrate the connector and the cylinder and the lower cap.

In the first embodiment, it is preferable that a scaler having a scale indicating the amount of oil is installed in the cylinder.

In addition, in the first embodiment, the tapered acid is preferably formed on the outer circumferential surface of the upper cap.

Furthermore, in the first embodiment, a gasket is preferably disposed between the upper end of the cylinder and the upper engaging groove of the connector and between the lower engaging groove of the cylinder and the lower cap of the cylinder.

A fluid charger according to a second embodiment of the present invention for achieving the above technical problem,

An upper cap having an upper nipple integrally formed at an upper portion thereof, a protrusion formed at a central portion of the lower portion, a through hole penetrating the upper nipple and the protrusion formed thereon, and an o-ring installed at an outer circumference of the protrusion; A connector corresponding to the protrusion is formed, and the coupling hole is screwed to the protrusion; A cylinder coupled to a lower portion of the connector and manufactured of a polycarbonate material; A lower cap coupled to a lower portion of the cylinder and having a fastening hole formed at a central portion thereof; A lower nipple screwed to the fastening hole and installed with a valve in a fluid movement path formed at a central portion thereof; And a through bolt penetrating the lower cap and passing through the cylinder to be bolted to the connector to integrate the connector and the cylinder and the lower cap.

The fluid charger according to the third embodiment of the present invention for achieving the above technical problem,

An upper nipple having an inlet hole formed in a central portion thereof and having a valve installed in the middle of the inlet hole; An upper cap on which an upper nipple is screwed to an upper side, a protrusion is formed at a central portion of a lower side, and a through hole corresponding to the inflow hole is formed on the protrusion; A connector corresponding to the protrusion is formed, and the coupling hole is screwed to the protrusion; A cylinder coupled to a lower portion of the connector and manufactured of a polycarbonate material; A lower cap coupled to a lower portion of the cylinder and having a fastening hole formed at a central portion thereof; A lower nipple screwed to the fastening hole and installed with a valve in a fluid movement path formed at a central portion thereof; And a through bolt penetrating the lower cap and passing through the cylinder to be bolted to the connector to integrate the connector and the cylinder and the lower cap.

Hereinafter, the configuration of the fluid charger according to the present invention will be more clearly described in detail with reference to the accompanying drawings.

1 is an exploded view showing a fluid charger according to a first embodiment of the present invention.

The fluid charger is integrated by fastening the lower cap 3 and the connector 5 using a through bolt while the connector 5 and the cylinder 7 are disposed between the upper cap 1 and the lower cap 3.

In more detail, the upper cap 1 has an upper nipple 9 formed at an upper end thereof, an inlet groove 11 formed in a circumferential form at a lower end thereof opposed to the upper end thereof, and a protrusion 13 formed at the center thereof. .

And the upper cap 1 is formed with a tapered acid on the outer circumferential surface to prevent the hand holding the upper cap 1 from slipping when separated from the connector 5.

The upper cap 1 has a through hole 15 penetrating through the center of the upper nipple 9 and the protrusion 13.

A male thread is formed on the outer circumferential surface of the protrusion 13 to be screwed with the connector 5.

The connector 5 has a coupling hole 17 formed at the center of the connector 13 to be screwed with the protrusion 13, and a female thread is formed at an inner side surface of the coupling hole 17.

It is preferable that an O-ring 19 is installed in the inlet groove 11 in order to prevent the fluid from leaking even when the connector 5 and the protrusion 13 are screwed.

The connector 5 has a protruding jaw 21 corresponding to the inlet groove 11 of the upper cap 1, and the upper coupling groove 23 is formed in a circumferential shape at the lower portion of the connector 5. The upper end of the cylinder described later is drawn in. In addition, a plurality of screw holes 25 are formed in the lower portion of the connector 5 so that the through bolts 27 are bolted.

The cylinder 7 is made of a material of polycarbonate in accordance with the features of the invention. Since polycarbonate is transparent, it is possible to fill oil into the fluid charger while checking the state of the fluid (oil) injection.

In addition to polycarbonate may be made of a plastic (or acrylic) material, but the pressure is weak because the fluid filling pressure is 12.4kgf / ㎠ or more gold occurs.

In addition, the cylinder may be made of the same material as tempered glass, but tempered glass may be strong in pressure, but has a weak problem in external impact.

Through the following experimental example it can be seen that it shows a better pressure and impact properties than composite containers, tempered glass, or acrylic.

Experimental Example 1

Material name Strain pressure Breaking pressure Remarks Polycarbonate - - Experiment up to 150kgf Composite container 19.5 (gas leak) 26.4 (deviation of the metal part) 20kgf design tempered glass - 61.2 Explosion Acrylic compound 12.4 (cracks) 16.2 Crack even at 10kgf in continuous use

(Acrylic Composite: Acrylic + Nylon Mixed Molding)

Experimental Example 2

Pressure 3kgf 5kgf 10kgf 20kgf Polycarbonate Surface Surface Surface Surface Composite container Surface Surface Surface leakage tempered glass crack crack Destruction blasting Acrylic compound Surface crack Destruction -

(External Shock Pressure: 7kgf)

As can be seen from the experimental examples described above, the polycarbonate cylinder according to the present invention did not generate deformation even in the internal pressure of 1 to 150 kgf / cm 2, and only surface gas was generated at 3 to 25 kgf / cm 2 for external impact. Or destruction did not occur.

The lower cap 3 is coupled to the lower end of the cylinder 7. The lower cap 3 has a lower coupling groove 29 formed in a circumferential shape on the upper surface thereof, and a fastening hole 31 is formed in the center thereof, and the lower nipple, which will be described later, is screwed. In the lower cap 3, a plurality of bolt holes 33 corresponding to the plurality of screw holes 25 are formed.

The scaler 35 as shown in FIG. 2 is attached to the inside of the cylinder 7, and a scale 35a indicating the amount of oil is displayed.

The scaler 35 may be mounted on the inside of the cylinder 7 after sheet metal or mold printing on an aluminum plate, silk-printed on the outside of the cylinder 7, or attached in the form of a sticker on the outside of the cylinder 7. .

Meanwhile, a gasket 37 is disposed between the cylinder 7 and the upper end and the upper coupling groove 23 of the connector 5, and between the lower coupling cylinder 29 and the lower coupling groove 29 of the lower cap 3. As a result, the fluid is filled in the cylinder 7 to prevent the fluid from flowing out of the cylinder 7 even though the pressure is increased.

The lower nipple 39 has a fluid movement path 39a formed at the center thereof, and a two-way valve 41 is installed in the middle of the fluid movement path 39a.

Hereinafter, the operation of the fluid charger according to the first embodiment of the present invention will be described.

First, the valve 41 of the lower nipple 39 is shut off, and the upper cap 1 is separated from the connector 5 in order to fill oil inside the fluid charger. At this time, the tapered acid is formed on the outer circumferential surface of the upper cap 1 to prevent the hand or jig holding the upper cap 1 from slipping.

The oil is filled into the cylinder 7 through the coupling hole 17 of the connector 5 while the upper cap 1 is removed from the connector 5.

After filling up the oil, the upper cap 1 is reconnected to the connector 5 and the upper nipple 9 is connected to one side hose for oil injection of an air conditioner (not shown).

The lower nipple 39 is connected to the other hose, and then the valve 41 is opened to allow oil to be injected through the other hose.

At this time, since the scaler 35 is installed, the amount of oil injected can be confirmed.

In addition, the cylinder 7 is made of a transparent material such as polycarbonate, so that the oil can be injected while checking the oil injection state. In addition, since the polycarbonate has durability from external impact or internal pressure as described above, the polycarbonate provides convenience of use of the fluid charger.

3 is an exploded longitudinal sectional view showing a fluid charger according to a second embodiment of the present invention.

The fluid charger, which is the second embodiment, is designed to have a suitable structure when filling oil or refrigerant of higher pressure than the fluid charger described in the first embodiment.

The fluid charger is integrated by fastening the lower cap 53 and the connector 55 by using a through bolt while the connector 55 and the cylinder 57 are disposed between the upper cap 51 and the lower cap 53.

The upper cap 51 has an upper nipple 59 formed at an upper end thereof, an inlet 61 formed in a circumferential form at a lower end thereof opposed to the upper end thereof, and a protrusion 63 formed at a central portion thereof.

And the upper cap 51 is tapered acid is formed on the outer circumferential surface to prevent the hand holding the upper cap 51 from slipping when separated from the connector to be described later.

The upper cap 51 has a through hole penetrating the center of the upper nipple 59 and the protrusion 63.

A plurality of seating grooves 65 are formed in the transverse direction on the outer circumferential surface of the protrusion 63, and the o-ring 67 is provided in the seating grooves 65.

A female thread is formed on the outer circumferential surface of the inlet groove 61 of the upper cap 51 to be screwed to the connector 55.

The connector 55 has a coupling hole 69 formed at a central portion thereof, and a protruding jaw 71 corresponding to the inlet groove 61 of the upper cap 51 is formed.

And the connector 55 is a male thread is formed on the outer circumferential surface of the protruding jaw 71 in order to screw the upper cap 51.

An upper coupling groove 73 is formed in the lower portion of the connector 55 in a circumferential shape so that the upper end of the cylinder to be described later is retracted. In addition, a plurality of screw holes 75 are formed in the lower portion of the connector 55 so that the through bolts 77 are bolted.

Cylinder 57 is made of a material of polycarbonate in accordance with features of the present invention. Since polycarbonate is transparent, it is possible to fill oil into the fluid charger while checking the state of the fluid (oil) injection.

The lower cap 55 is coupled to the lower end of the cylinder 57 as described above. The lower cap 55 has a lower coupling groove 79 formed in a circumferential shape on the upper surface thereof, and a fastening hole 55a is formed in the center thereof to screw the lower nipple to be described later. In addition, a plurality of bolt holes 81 corresponding to the plurality of screw holes are formed in the lower cap 55.

A scaler 35 as shown in FIG. 2 is attached to the inside of the cylinder 57, and a scale 35a indicating the amount of oil is displayed.

The scaler 35 may be mounted on the inside of the cylinder 57 after printing sheet metal or mold on an aluminum plate, silk-printed on the outside of the cylinder 57, or attached to the outside of the cylinder 57 in the form of a sticker. .

Meanwhile, a gasket 83 is disposed between the cylinder 57 and the upper end and the upper coupling groove of the connector 55, and between the lower end of the cylinder 57 and the lower coupling groove 79 of the lower cap 55. The fluid is filled in the inside of the 57 to increase the pressure to prevent the fluid from flowing out of the cylinder (57).

The lower nipple 85 has a fluid movement path 85a formed at the center thereof, and a two-way valve 87 is installed in the middle of the fluid movement path 85a.

Since the operation of the fluid charger according to the second embodiment of the present invention configured as described above is the same as that of the first embodiment, a description of the specific operation is omitted.

However, it should be emphasized that the oil or refrigerant having a higher pressure than the fluid charger as the first embodiment, that is, oil or refrigerant having a pressure of 14 to 25 kg / cm 2 can be used.

4 is an exploded longitudinal sectional view of a fluid charger according to a third embodiment of the present invention.

The fluid charger of the third embodiment is almost identical in configuration to the fluid charger of the first embodiment, and the only difference is that the upper nipple 103 is screwed without the upper nipple being formed in the upper cap 101.

The upper nipple 103 has an inlet hole 105 formed at the center thereof, and a two-way valve 107 is installed in the middle of the inlet hole 105.

In addition, a male thread is formed on the lower outer periphery of the upper nipple 103 so that the upper nipple 103 and the upper cap 101 may be screwed together. It is formed on the side of the fastening groove 109 is formed. The upper cap 101 has a through hole 111 penetrating the center of the fastening groove 109 in the center thereof.

The lower portion of the upper cap 101 is formed with a recess groove 113 in a circumferential shape, the protrusion 115 is formed in the center portion.

And the upper cap 101 is tapered acid is formed on the outer circumferential surface to prevent the hand holding the upper cap 101 to slip when separated from the connector 117.

A male thread is formed on the outer circumferential surface of the protrusion 115 to be screwed with the connector 117.

In the fluid charger, which is the third embodiment, all other components such as the connector 117, the cylinder 119, the lower cap 121, and the lower nipple 123 are the same as in the first embodiment, and thus the detailed description thereof will be omitted.

Hereinafter, the operation of the fluid charger according to the third embodiment of the present invention will be described.

First, the valve 107 of the upper nipple 103 and the valve 125 of the lower nipple 123 are blocked.

Then, the valve 107 of the upper nipple 103 is connected to the gas hose, and the valve of the upper nipple 103 is opened to introduce refrigerant into the cylinder 119.

When the refrigerant is filled in the cylinder 119, the valve 107 of the upper nipple 103 is shut off and the gas hose is separated from the upper nipple 103.

The upper nipple 103 or the lower nipple 123 is connected to the hose where the refrigerant is to be injected, and the valve 125 of the connected side is opened to allow the refrigerant to be injected.

As described above, the fluid charger for the air conditioner according to the present invention can be injected while the cylinder is made of a transparent material to check the state of the injected oil.                     

In addition, a scaler is attached to the cylinder to enable injection while determining the amount of oil injected.

In addition, by connecting the upper nipple provided with a valve to the upper cap can be filled with the refrigerant as well as the oil can be commonly used for the injection of oil and refrigerant without complicated configuration.

Claims (8)

An upper cap in which an upper nipple is integrally formed and a protrusion is formed in a central portion of the lower portion, and a through hole penetrating the upper nipple and the protrusion is formed; A connector corresponding to the protrusion is formed, and the coupling hole is screwed to the protrusion; A cylinder coupled to a lower portion of the connector and manufactured of a polycarbonate material; A lower cap coupled to a lower portion of the cylinder and having a fastening hole formed at a central portion thereof; A lower nipple screwed to the fastening hole and installed with a valve in a fluid movement path formed at a central portion thereof; And And a through-bolt penetrating the lower cap and passing through the cylinder to be bolted to the connector to integrate the connector, the cylinder and the lower cap. The fluid charger of claim 1, wherein a scaler is provided on the cylinder to display a scale indicating an amount of oil. The fluid charger according to claim 1 or 2, wherein a tapered acid is formed on an outer circumferential surface of the upper cap. The fluid charger of claim 1, wherein a gasket is disposed between the upper end of the cylinder and the upper engaging groove of the connector, and the lower engaging groove of the cylinder and the lower engaging groove of the lower cap. An upper cap having an upper nipple integrally formed at an upper portion thereof, a protrusion formed at a central portion of the lower portion, a through hole penetrating the upper nipple and the protrusion formed thereon, and an o-ring installed at an outer circumference of the protrusion; A connector corresponding to the protrusion is formed, and the coupling hole is screwed to the protrusion; A cylinder coupled to a lower portion of the connector and manufactured of a polycarbonate material; A lower cap coupled to a lower portion of the cylinder and having a fastening hole formed at a central portion thereof; A lower nipple screwed to the fastening hole and installed with a valve in a fluid movement path formed at a central portion thereof; And And a through-bolt penetrating the lower cap and passing through the cylinder to be bolted to the connector to integrate the connector, the cylinder and the lower cap. The fluid charger according to claim 5, wherein a scaler on which a scale indicating a quantity of oil is displayed is installed in the cylinder. An upper nipple having an inlet hole formed in a central portion thereof and having a valve installed in the middle of the inlet hole; An upper cap on which an upper nipple is screwed to an upper side, a protrusion is formed at a center of a lower side, and a through hole corresponding to an inflow hole of the upper nipple is formed on the protrusion; A connector corresponding to the protrusion is formed, and the coupling hole is screwed to the protrusion; A cylinder coupled to a lower portion of the connector and manufactured of a polycarbonate material; A lower cap coupled to a lower portion of the cylinder and having a fastening hole formed at a central portion thereof; A lower nipple screwed to the fastening hole and installed with a valve in a fluid movement path formed at a central portion thereof; And And a through-bolt penetrating the lower cap and passing through the cylinder to be bolted to the connector to integrate the connector, the cylinder and the lower cap. 8. The fluid charger of claim 7, wherein a scaler is provided on the cylinder to indicate a scale indicating the amount of oil.

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