A household air conditioner quick connector assembly

Abstract

The invention discloses a household air-conditioner quick connector assembly, which is composed of a male connector assembly and a female connector assembly. The male connector assembly comprises a coupling head, a male connector body, a male connector spring and a four-leaf valve block, one end of the coupling head is connected to one end of an inner cavity of the male connector body through a thread and an O-ring, and the four-leaf valve block is installed at the other end of the inner cavity of the male connector body; the female connector assembly comprises a locking cap, a two-way valve block, a push rod, a female connector body, a female connector spring, an E-type retaining ring, a locking connector and a copper tube; the invention adopts soft and hard sealing structures between the coupling head and the male connector body, between the male connector body and the female connector body, between the two-way valve block and the push rod, and between the female connector body and the locking connector to ensure the sealing performance of the quick connector assembly; when the male and female connectors are closed or assembled, a single O-ring is used for sealing to reduce assembly resistance, and when the male and female connectors are connected, a double O-ring is used for sealing between the two to ensure the reliability of the sealing.

Description

Technical Field

[0001] The invention relates to the field of air conditioner conversion joints, and in particular to a household air conditioner quick joint assembly. Background Art

[0002] When installing the existing air conditioner, the indoor unit is led out through a copper pipe. During the connection and debugging with the outdoor unit, specialized technicians are required to complete the process. There are disadvantages such as complicated operation, poor connection stability, inconvenience in disassembly and maintenance. During the disassembly and maintenance process, the residual Freon in the copper pipe will pollute the air, the environmental protection performance is poor, the outdoor installation is dangerous, and the installation cost is high. Therefore, it is necessary to provide a connection device for quickly connecting and installing the pipelines of the outdoor unit and the indoor unit of the air conditioner. Summary of the invention

[0003] The purpose of the present invention is to provide an environmentally friendly household air-conditioner quick-connect joint assembly which is easy to install and maintain.

[0004] The above technical objectives of the present invention are achieved through the following technical solutions:

[0005] A household air-conditioner quick connector assembly, consisting of a male connector assembly and a female connector assembly, the male connector assembly comprising a coupling head, a male connector body, a male connector spring and a four-leaf valve block, one end of the coupling head being connected to one end of an inner cavity of the male connector body by means of a thread and an O-ring, a soft seal is formed between the coupling head and the male connector body by means of the O-ring, and a hard seal is formed by means of a protrusion at the end of the male connector body squeezing the coupling head by means of thread force; the four-leaf valve block is installed at the other end of the inner cavity of the male connector body, and the male connector spring is installed between the coupling head and the four-leaf valve block; the female connector assembly comprises a locking cap, a two-way valve block, a push rod, a female connector body, a female connector spring, an E-type retaining ring, a locking connector and a copper tube, the copper tube being connected to the connecting end of the female connector body by means of a locking connector, wherein the locking connector and the copper tube are fixedly connected by welding, and at the same time, different specifications can be selected according to different size specifications of the copper tube. The locking joint is connected to the female joint body; the mounting end of the push rod is installed on the connecting end through an E-type retaining ring, and the positioning end of the female joint body is connected to one end of the male joint body on which a four-leaf valve block is installed through a locking cap, one end of the two-way valve block is in contact with the side wall of the male joint body on which one end of the four-leaf valve block is installed for sealing, and the other end of the two-way valve block is in contact with the female joint spring installed in the female joint body, and the side wall of the two-way valve block is provided with two O-rings six, when the male joint assembly is matched with the female joint assembly, the two O-rings six are in sealing contact with the inner wall of the female joint body, when the male joint assembly is loosened from the female joint assembly, one O-ring six is ​​in sealing contact with the inner wall of the female joint body, that is, when the male and female joints are closed or assembled, a single O-ring is sealed to reduce the assembly resistance, and when the male and female joints are connected, a double O-ring seal is formed between the two to ensure the reliability of the seal; the lifting end of the push rod passes through the inner cavity of the female joint spring and the two-way valve block and is in contact with the four-leaf valve block.

[0006] Furthermore, the four-leaf valve block includes a limiting end and a sealing end, and four positioning leaves evenly distributed and extending outward are provided on the circumference of the limiting end, and an O-ring three is installed in the sealing groove of the sealing end. The male connector spring pushes the positioning leaf to contact the end of the inner cavity of the male connector body, and the four-leaf valve block is sealed with the side wall of the end of the male connector body through the O-ring three.

[0007] Furthermore, the mounting end of the push rod is provided with a retaining ring groove for installing an E-type retaining ring, and the side wall of the lifting end of the push rod is provided with a sealing groove for installing an O-ring five. When the male joint assembly and the female joint assembly are loosened, a soft seal is formed between the push rod and the inner side wall of the two-way valve block through the O-ring five, and the push rod is clamped into the chamfer of the inner cavity end of the two-way valve block under the action of the female joint spring to form a hard seal.

[0008] Furthermore, the middle of the connecting end of the female connector body is a circular ring structure, the push rod is installed on the circular ring structure through the mounting end and is fixed by an E-type retaining ring, the outer ring of the circular ring is connected to the inner wall of the female connector body through three evenly distributed ribs, and the push rod and the female connector body are connected by the above structure, which ensures the reliability of the connection between the two and has little resistance to the coolant. The side wall of the positioning end of the female connector body is a regular hexagonal structure, which is positioned by cooperating with the locking cap through the regular hexagonal structure of the positioning end to ensure that the locking cap and the female connector body do not rotate relative to each other during operation.

[0009] Furthermore, the other end of the connecting head is provided with an internal thread, an O-ring is provided at the bottom of the internal thread, and a cap is covered on the internal thread end of the connecting head, wherein the connecting head has multiple specifications, and the specifications of the internal threads of different specifications are different. Combined with the O-ring, they are respectively connected with the stop valves of different specifications of the air-conditioning outdoor unit to perform soft and hard sealing.

[0010] Furthermore, the end of the copper tube is covered with a second cover cap, which is used to protect the surface of the copper tube from being worn.

[0011] Furthermore, an end face of one end of the two-way valve block that is in contact with the male connector body for sealing is provided with a sealing groove for installing an O-ring four. A soft seal is formed between the two-way valve block and the male connector body through the O-ring four. The male connector body uses the threaded force between it and the locking cap to make the protrusion at the end of the male connector body squeeze the female connector body to form a hard seal. At the same time, since the male connector and the female connector are in a separated state, both ends are sealed. When the female connector is connected to the inner cavity of the male connector, some air inside cannot be discharged and a certain air pressure exists. The two-way valve block here adopts an end face sealing structure to effectively avoid air pressure and facilitate the connection of the female connector to the male connector.

[0012] Furthermore, the locking joint and the female joint body are sealed by threads and O-rings, a soft seal is formed between the female joint body and the locking joint by O-rings, and the protrusion at the end of the female joint body locks the joint by thread force to form a hard seal, and the sealing strength of the connection is increased by the soft and hard seals.

[0013] In summary, the present invention has the following beneficial effects: 1. The present invention adopts a soft and hard sealing structure between the coupling head and the male connector body, between the male connector body and the female connector body, between the two-way valve block and the push rod, and between the female connector body and the locking connector to ensure the sealing performance of the quick connector assembly, and the test is carried out according to the provisions of QMG-J80.003 to meet the requirements of basic pressure resistance (6.3Mp) and ultimate pressure resistance (20.8Mp); 2. When the male and female connectors are closed or assembled, a single O-ring seal is adopted to reduce the assembly resistance. When the male and female connectors are connected, a double O-ring seal is used between the two to ensure the reliability of the seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the quick connector assembly of the present invention before assembly;

[0015] Figure 2 It is a schematic diagram of the structure of the quick connector assembly after assembly of the present invention;

[0016] Figure 3 It is a structural schematic diagram of a four-leaf valve block of the present invention;

[0017] Figure 4 It is a structural schematic diagram of the ejector rod of the present invention;

[0018] Figure 5 It is a structural schematic diagram of the female connector body of the present invention;

[0019] Figure 6 yes Figure 1 A partial enlarged view of part A;

[0020] Figure 7 yes Figure 2 A partial enlarged view of part B;

[0021] Figure 8 yes Figure 2 A partial enlarged view of part C in the middle;

[0022] Fig. 9 yes Figure 2 A partial enlarged view of part D.

[0023] In the figure, 1, cap one; 2, connecting head; 3, o-ring one; 4, o-ring two; 5, male connector body; 6, male connector spring; 7, four-leaf valve block, 71, limit end; 72, sealing end; 8, o-ring three; 9, o-ring four; 10, o-ring five; 11, locking cap; 12, two-way valve block; 13, o-ring six; 14, push rod; 141, installation end; 142, lifting end; 15, female connector body; 151, connection end; 152, positioning end; 16, female connector spring; 17, o-ring seven; 18, E-type retaining ring; 19, locking connector; 20, copper tube; 21, cap two. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0025] like Figure 1-Figure 5 As shown, a household air conditioner quick connector assembly is composed of a male connector assembly and a female connector assembly. The male connector assembly includes a connector head 2, a male connector body 5, a male connector spring 6 and a four-leaf valve block 7. One end of the connector head 2 is connected to one end of the inner cavity of the male connector body 5 through a thread and an O-ring 4. Figure 7As shown, a soft seal is formed between the coupling head 2 and the male connector body 5 through an O-ring 24, and the protrusion at the end of the male connector body 5 squeezes the coupling head 2 through the thread force to form a hard seal; the four-leaf valve block 7 is installed at the other end of the inner cavity of the male connector body 5, and the male connector spring 6 is installed between the coupling head 2 and the four-leaf valve block 7; the female connector assembly includes a locking cap 11, a two-way valve block 12, a push rod 14, a female connector body 15, a female connector spring 16, an E-type retaining ring 18, a locking connector 19 and a copper tube 20, and the copper tube 20 is locked by The joint 19 is connected to the connecting end 151 of the female joint body 15, wherein the locking joint 19 and the copper tube 20 are fixedly connected by welding. At the same time, according to the different size specifications of the copper tube 20, different specifications of locking joints 15 can be selected to be connected to the female joint body 15; the mounting end 141 of the push rod 14 is installed on the connecting end 151 through the E-type retaining ring 18, and the positioning end 152 of the female joint body 15 is connected to one end of the male joint body 5 equipped with the four-leaf valve block 7 through the locking cap 11, and the two-way valve block 12 One end of the bidirectional valve block 12 contacts and seals with the side wall of one end of the male connector body 5 on which the four-leaf valve block 7 is installed, and the other end of the bidirectional valve block 12 contacts with the female connector spring 16 installed in the female connector body 15. The side wall of the bidirectional valve block 12 is provided with two o-rings six 13. When the male connector assembly is matched with the female connector assembly, the two o-rings six 13 are in sealing contact with the inner wall of the female connector body 15. When the male connector assembly is loosened from the female connector assembly, one o-ring six 13 is in sealing contact with the inner wall of the female connector body 15, that is, when the male and female connectors are closed or assembled, a single o-ring seals. Reduce assembly resistance and increase the reliability of spring elastic force. When the male and female joints are connected, a double O-ring seal is formed between the two to ensure the reliability of the seal. When the machine needs to be disassembled or moved, due to the pressure of 0.8 to 1.5 MPa in the air-conditioning pipeline, when the male and female joints are loosened, the spring needs to overcome the pipeline air pressure to achieve balance and overcome the O-ring friction force, so the spring force must meet the relevant requirements described above to ensure the reliability of the seal; the lifting end 142 of the push rod 14 passes through the inner cavity of the female joint spring 16 and the two-way valve block 12 and conflicts with the four-leaf valve block 7.

[0026] Further, such as Figure 1 and Figure 3 As shown, the four-leaf valve block 7 includes a limiting end 71 and a sealing end 72. Four positioning leaves that are evenly distributed and extend outward are provided on the circumference of the limiting end 71. An O-ring 3 8 is installed in the sealing groove of the sealing end 72. The male connector spring 6 pushes the positioning leaves to contact the end of the inner cavity of the male connector body 5. The four-leaf valve block 7 is sealed with the side wall of the end of the male connector body 5 through the O-ring 3 8.

[0027] Further, such as Figure 1 , Figure 4 and Figure 6As shown, the mounting end 141 of the push rod 14 is provided with a retaining ring groove for installing an E-type retaining ring 18. When the male joint assembly and the female joint assembly are loosened, the push rod 14 forms a soft seal with the inner wall of the two-way valve block 12 through the O-ring 5 10, and the push rod 14 is clamped into the chamfer of the inner cavity end of the two-way valve block 12 under the action of the female joint spring 16 to form a hard seal.

[0028] Further, such as Figure 1 and Figure 5 As shown, the middle of the connecting end 151 of the female connector body 15 is a circular ring structure, the push rod 14 is installed on the circular ring structure through the mounting end 141 and is fixed by an E-type retaining ring 18, the outer ring of the circular ring is connected to the inner wall of the female connector body 15 through three evenly distributed ribs, the push rod 14 and the female connector body 15 are connected by the above structure, which ensures the reliability of the connection between the two and has less resistance to the coolant. The side wall of the positioning end 152 of the female connector body 15 is a regular hexagonal structure, which is positioned by cooperating with the locking cap 11 through the regular hexagonal structure of the positioning end 152 to ensure that the locking cap 11 and the female connector body 15 will not rotate relative to each other during operation.

[0029] Furthermore, the other end of the connecting head 2 is provided with an internal thread, and an O-ring 3 is provided at the bottom of the internal thread. A cap 1 covers the internal thread end of the connecting head 2, wherein the connecting head 2 has multiple specifications, and the specifications of the internal threads of different specifications are different. In combination with the O-ring 3, they are respectively connected with the stop valves of different specifications of the air-conditioning outdoor unit to perform soft and hard sealing.

[0030] Furthermore, the end of the copper tube 20 is covered with a second cap 21, and the second cap 21 is used to protect the surface of the copper tube 20 from being worn.

[0031] Further, such as Figure 8 As shown, the end face of one end of the two-way valve block 12 that contacts and seals with the male connector body 5 is provided with a sealing groove for installing an O-ring 49. A soft seal is formed between the two-way valve block 12 and the male connector body 5 through the O-ring 49. The male connector body 5 uses the threaded force between it and the locking cap 11 to make the protrusion at the end of the male connector body 5 squeeze the female connector body 15 to form a hard seal. At the same time, since the male connector and the female connector are in a separated state, both ends are sealed. When the female connector is connected to the inner cavity of the male connector, some air inside cannot be discharged and a certain air pressure exists. The two-way valve block 12 adopts an end face sealing structure here to effectively avoid air pressure and facilitate the connection of the female connector to the male connector.

[0032] Further, such as Fig. 9As shown, the locking joint 19 and the female connector body 15 are sealed by threads and an O-ring 17. A soft seal is formed between the female connector body 15 and the locking joint 19 by the O-ring 17. The protrusion at the end of the female connector body 15 locks the joint 19 by thread force to form a hard seal. The soft and hard seals increase the sealing strength of the connection.

[0033] Working principle: When the male connector assembly is matched with the female connector assembly, the locking cap 11 of the female connector assembly is connected to the male connector body 5, and the threaded movement drives the push rod 14 to move, thereby pushing open the four-leaf valve block 7 inside the male connector assembly to form the entire passage to ensure the circulation of refrigerant. When the male connector assembly and the female connector assembly are loosened, the male connector spring and the female connector spring force respectively push the four-leaf valve block 7 and the two-way valve block 12 to ensure their respective sealing properties and seal the refrigerant in their respective pipelines to prevent leakage.

[0034] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A household air conditioner quick connector assembly, consisting of a male connector assembly and a female connector assembly, characterized in that: The male connector assembly comprises a coupling head (2), a male connector body (5), a male connector spring (6) and a four-leaf valve block (7); one end of the coupling head (2) is connected to one end of the inner cavity of the male connector body (5) by means of a thread and a second O-ring (4); a soft seal is formed between the coupling head (2) and the male connector body (5) by means of the second O-ring (4); a protrusion at the end of the male connector body (5) squeezes the coupling head (2) by means of a thread force to form a hard seal; the four-leaf valve block (7) is mounted at the other end of the inner cavity of the male connector body (5); the male connector spring (6) is mounted between the coupling head (2) and the four-leaf valve block (7); the female connector assembly comprises a locking cap (11), a two-way valve block (12), a push rod (14), a female connector body ( 15), a female joint spring (16), an E-type retaining ring (18), a locking joint (19) and a copper tube (20), wherein the copper tube (20) is connected to a connecting end (151) of the female joint body (15) via the locking joint (19), the mounting end (141) of the push rod (14) is mounted on the connecting end (151) via the E-type retaining ring (18), the positioning end (152) of the female joint body (15) is connected to one end of the male joint body (5) on which a four-leaf valve block (7) is mounted via a locking cap (11), one end of the two-way valve block (12) is abutted against and sealed against a side wall of one end of the male joint body (5) on which the four-leaf valve block (7) is mounted, and the other end of the two-way valve block (12) is abutted against a side wall of a male joint body (5) on which a four-leaf valve block (7) is mounted, and the other end of the two-way valve block (12) is abutted against a side wall of a male joint body (5) on which a four-leaf valve block (7) is mounted. The female joint spring (16) in the two-way valve block (12) is in conflict with the female joint spring (16) in the two-way valve block (12); the side wall of the two-way valve block (12) is provided with two O-rings (6) (13); when the male joint assembly and the female joint assembly are matched, the two O-rings (6) (13) are in sealing contact with the inner wall of the female joint body (15); when the male joint assembly and the female joint assembly are loosened, one O-ring (13) is in sealing contact with the inner wall of the female joint body (15); the lifting end (142) of the push rod (14) passes through the inner cavity of the female joint spring (16) and the two-way valve block (12) and conflicts with the four-leaf valve block (7); the four-leaf valve block (7) includes a limiting end (71) and a sealing end (72); the limiting end (71) is provided with four positioning leaves that are evenly distributed and extend outward on the circumference, and the sealing end (72) is An O-ring three (8) is installed in the groove, the male joint spring (6) pushes the positioning leaf to contact the inner cavity end of the male joint body (5), and the four-leaf valve block (7) is sealed with the side wall of the end of the male joint body (5) through the O-ring three (8); the installation end (141) of the push rod (14) is provided with a retaining ring groove for installing an E-type retaining ring (18), and the side wall of the lifting end (142) of the push rod (14) is provided with a sealing groove for installing an O-ring five (10). When the male joint assembly and the female joint assembly are loosened, the push rod (14) forms a soft seal with the inner side wall of the two-way valve block (12) through the O-ring five (10), and the push rod (14) is clamped into the chamfer of the inner cavity end of the two-way valve block (12) under the action of the female joint spring (16) to form a hard seal;The middle of the connecting end (151) of the female connector body (15) is a circular ring structure. The push rod (14) is installed on the circular ring structure through the installation end (141) and fixed by an E-type retaining ring (18). The outer ring of the circular ring is connected to the inner side wall of the female connector body (15) through three evenly distributed ribs. The side wall of the positioning end (152) of the female connector body (15) is a regular hexagonal structure, and the regular hexagonal structure of the positioning end (152) cooperates with the locking cap (11) for positioning; the other end of the connecting head (2) is provided with an internal thread, and an O-ring (3) is provided at the bottom of the internal thread. The cap (1) is covered on the internal thread end of the connecting head (2); the end of the copper tube (20) is covered with a cap (21); the double The end surface of the bidirectional valve block (12) and the male connector body (5) is provided with a sealing groove for installing an O-ring 4 (9). A soft seal is formed between the bidirectional valve block (12) and the male connector body (5) through the O-ring 4 (9). The male connector body (5) uses the thread force between the male connector body (5) and the locking cap (11) to make the protrusion at the end of the male connector body (5) squeeze the female connector body (15) to form a hard seal. The locking connector (19) and the female connector body (15) are sealed and connected through threads and O-ring 7 (17). The female connector body (15) and the locking connector (19) form a soft seal through the O-ring 7 (17). The protrusion at the end of the female connector body (15) locks the connector (19) through the thread force to form a hard seal.

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