Quick connector for refrigerant filling port of air conditioning system

Abstract

The present invention discloses a quick connector for the refrigerant filling port of an air-conditioning system, comprising an outer sleeve, a spring sheet body, an inner core, a valve core body, and first and second springs. The outer sleeve of the spring sheet body is provided with an outer sleeve, the inner core is provided within the spring sheet body, the inner core is provided with a second spring, a first spring is provided between the outer sleeve and the spring sheet body, a valve core body is screwed to the spring sheet body by compressing the first and second springs, a groove for placing a first O-ring and a second O-ring is provided within the inner core, and a third O-ring is provided outside the valve core body. This quick connector can be quickly connected by simply aligning it with the filling port and pressing it inward, which can greatly reduce the risk of operators filling the window exterior wall; this quick connector adopts a sealing-first-then-opening method to effectively solve this problem; when this quick connector is disconnected from the system valve interface, it will automatically seal to prevent the refrigerant in the filling pipe from leaking.

Description

Technical Field

[0001] The invention relates to the technical field of refrigerant filling port connectors for air-conditioning systems, in particular to a quick connector for a refrigerant filling port for an air-conditioning system. Background Art

[0002] The existing connection method for adding refrigerant to the air conditioning system is to connect directly by screwing the threads, which has several main shortcomings: 1. The air conditioner outdoor unit is generally installed on the outer wall of the window, and the body needs to be bent over outside to screw the threads during operation, which is relatively dangerous; 2. The existing filling method may cause refrigerant leakage and spray onto the hands during connection; 3. When the connector is disconnected from the system valve, the refrigerant in the filling pipe will leak into the air, which will pollute the atmosphere. The present application is an invention proposed to address the above problems. Summary of the Invention

[0003] The object of the present invention is to overcome the above-mentioned deficiencies of the prior art and to provide a quick connector for a refrigerant filling port of an air-conditioning system.

[0004] In order to achieve the above object, the technical solution of the present invention is:

[0005] A quick connector for the refrigerant filling port of an air-conditioning system includes an outer sleeve, a spring sheet body, an inner core, a valve core body, a first spring, and a second spring. The outer sleeve is provided on the outer sleeve of the spring sheet body, an inner core is provided inside the spring sheet body, a second spring is provided on the outer sleeve of the inner core, a first spring is provided between the outer sleeve and the spring sheet body, a valve core body is screwed into the spring sheet body by compressing the first and second springs, a first O-ring groove for placing a first O-ring and a second O-ring groove for placing a second O-ring are provided in the inner core, and a third O-ring groove for placing a third O-ring is provided outside the valve core body.

[0006] As a further solution of the present invention, a filling cavity is provided in the valve core body, and a filling inlet communicating with the filling cavity is provided on a side of the valve core body.

[0007] As a further solution of the present invention, the top of the valve core body is provided with a valve core head for opening the valve core of the refrigerant filling port of the air conditioning system.

[0008] As a further solution of the present invention, the valve core head and the valve core body are manufactured in one piece.

[0009] As a further solution of the present invention, an internal thread connected to an external thread on a refrigerant filling port of an air-conditioning system is provided in the spring leaf body.

[0010] As a further solution of the present invention, an annular groove is provided at the tail of the spring sheet body, and the spring sheet body has 4-10 small spring strips extending upward from the annular groove and separated from each other.

[0011] As a further solution of the present invention, the spring sheet body has 8 small spring strips extending upward from the annular groove and separated from each other.

[0012] Beneficial effects of the present invention:

[0013] 1. This quick connector can be quickly connected by simply aligning it with the filling port and pressing it inward, which can greatly reduce the risk of operators filling the window wall;

[0014] 2. This quick connector adopts the method of sealing first and then opening to effectively solve this problem;

[0015] 3. When the quick connector is disconnected from the system valve interface, it will automatically seal to prevent the refrigerant in the liquid filling pipe from leaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 This is a diagram showing the state of the refrigerator of the present invention when it is being filled;

[0018] Figure 3 Schematic diagram of the structure of the spring sheet body in the present invention;

[0019] Figure 4 It is a side view of the spring leaf body in the present invention.

[0020] In the figure, 1 is the outer sleeve, 2 is the spring sheet body, 3 is the inner core, 4 is the valve core body, 5 is the first spring, 6 is the second spring, 7 is the first O-ring, 8 is the second O-ring, 9 is the third O-ring, 21 is the annular groove, 22 is the small spring strip, 41 is the filling chamber, 42 is the filling inlet, and 43 is the valve core head. DETAILED DESCRIPTION

[0021] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0022] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0023] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this patent.

[0024] In the description of this patent, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they can refer to fixed connection or set, detachable connection or set, or integral connection or set. Those skilled in the art will understand the specific meanings of the above terms in this patent based on the specific circumstances.

[0025] Refer to Figure 1-4 A quick connector for an air conditioning system refrigerant filling port includes an outer sleeve 1, a spring plate body 2, an inner core 3, a valve core body 4, a first spring 5, and a second spring 6. The outer sleeve 1 is positioned over the spring plate body 2, and the inner core 3 is positioned within the spring plate body 2. The second spring 6 is positioned over the inner core 3. The first spring 5 is positioned between the outer sleeve 1 and the spring plate body 2. The valve core body 4 is threadedly connected to the spring plate body 2 by compressing the first and second springs 5 ​​and 6. The inner core 3 defines a first O-ring groove for a first O-ring 7 and a second O-ring groove for a second O-ring 8. The valve core body 4 defines a third O-ring groove for a third O-ring 9. A filling chamber 41 is defined within the valve core body 4, and a filling inlet 42 is provided on the side of the valve core body 4, communicating with the filling chamber 41. A valve core head 43 is positioned at the top of the valve core body 4 to open the valve core of the air conditioning system refrigerant filling port. The valve core head 43 is integrally manufactured with the valve core body 4. The spring body 2 is provided with an internal thread that connects to the external thread on the refrigerant filling port of the air conditioning system. An annular groove 21 is provided at the rear end of the spring body 2. The spring body 2 has 4-10 separate small spring strips 22 extending upward from the annular groove 21. The spring body 2 has 6 separate small spring strips 22 extending upward from the annular groove 21. The spring body 2 has 8 separate small spring strips 22 extending upward from the annular groove 21.

[0026] Instructions for use of refrigerant filling of this embodiment: the quick connector is aligned with the filling port, the first O-ring 7 first seals with the front end of the filling port, and then pushes the inner core 3 to move toward the quick connector, and at the same time, the top of the valve core head 43 presses against the valve core of the filling port, and the valve core will be opened; the relative position of the second O-ring 8 and the valve core head 43 changes, leaving the original sealing position, so that the filling chamber 41, the filling inlet 42 and the filling port are connected to each other for refrigerant filling; when the inner core 3 moves to the designated position of the design, the outer sleeve 1 forms a thrust toward the filling port under the action of the first spring 5, which contracts the small spring strip 22 of the spring sheet body 2, thereby making the spring sheet body 2 is clamped with the thread of the filling port to fix it, forming a filling passage; pull the outer sleeve 1 in the opposite direction of the filling port, and when it moves to the set specified position, the small spring bar 22 of the spring sheet body 2 will automatically expand, so that the thread of the spring sheet body 2 is separated from the thread of the filling port. At the same time, the inner core 3 moves toward the filling port under the action of the second spring 6, and forms a closed loop after reaching the designed specified position. At this time, the quick connector is separated from the filling port, and the whole process is quickly connected, which can greatly reduce the risk of operators filling the window exterior wall; when the quick connector is disconnected from the system valve interface, it will automatically seal to prevent the refrigerant in the filling pipe from leaking.

[0027] This embodiment mainly utilizes the principle of a spring sheet. The spring sheet body 2 can be configured to include 4-10 small spring strips 22 extending upward from the annular groove 21 and separated from each other. A preferred embodiment includes 8 evenly distributed small spring strips 22. The annular groove 21 is provided on the outer circle of the tail of the spring sheet body 2, so that this portion becomes thinner to form a spring sheet, thereby enabling the small spring strip 22 to have the property of being able to shrink or expand. The outer sleeve 1 and the first spring 5 cooperate to achieve rapid thread locking.

[0028] The installation method of this embodiment is as follows: put the inner core 3 into the spring sheet body 2, put the second spring 6 on the tail of the inner core 3, then put the outer sleeve 1 on the outside of the spring sheet body 2, and then place the first spring 5 inside the outer sleeve 1. Finally, the valve core body 4 compresses the first spring 5 and the second spring 6 and then rotates them to connect with the thread of the spring sheet body 2, and screws the thread to the bottom to complete the assembly.

[0029] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. The quick connector for the refrigerant filling port of the air conditioning system is characterized by: The invention comprises an outer sleeve (1), a spring sheet body (2), an inner core (3), a valve core body (4), a first spring (5) and a second spring (6), wherein the outer sleeve of the spring sheet body (2) is provided with an outer sleeve (1), the inner core (3) is provided in the spring sheet body (2), the outer sleeve of the inner core (3) is provided with a second spring (6), a first spring (5) is provided between the outer sleeve (1) and the spring sheet body (2), a valve core body (4) is screwed in the spring sheet body (2) by compressing the first spring (5) and the second spring (6), and a valve core head (43) for opening the valve core of the refrigerant filling port of the air conditioning system is provided on the top of the valve core body (4); a first O-ring groove for placing a first O-ring (7) and a second O-ring groove for placing a second O-ring (8) are provided in the inner core (3), and a third O-ring groove for placing a third O-ring (9) is provided outside the valve core body (4); an internal thread connected to the external thread on the refrigerant filling port of the air conditioning system is provided in the spring sheet body (2).

2. The quick connector for the refrigerant filling port of the air conditioning system according to claim 1, characterized in that: A filling cavity (41) is provided in the valve core body (4), and a filling inlet (42) communicating with the filling cavity (41) is provided on the side of the valve core body (4).

3. The quick connector for the refrigerant filling port of an air conditioning system according to claim 1, characterized in that: The valve core head (43) and the valve core body (4) are manufactured in one piece.

4. The quick connector for the refrigerant filling port of an air conditioning system according to claim 1, characterized in that: The tail of the spring sheet body (2) is provided with an annular groove (21), and the spring sheet body (2) has 4-10 small spring strips (22) extending from the annular groove (21) toward the head of the spring sheet body (2) and separated from each other.

5. The quick connector for the refrigerant filling port of the air conditioning system according to claim 4, characterized in that: The spring sheet body (2) has eight small spring strips (22) extending from the annular groove (21) toward the head of the spring sheet body (2) and separated from each other.

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