CN211624537U

CN211624537U - Quick-connection branch pipe for central air conditioner

Info

Publication number: CN211624537U
Application number: CN202020234314.9U
Authority: CN
Inventors: 邓锐光; 余长清
Original assignee: Shunde Foshan Hong Leong Refrigeration Accessories Co ltd
Current assignee: Fenglong (Xinxing) Refrigeration Equipment Co.,Ltd.
Priority date: 2020-03-02
Filing date: 2020-03-02
Publication date: 2020-10-02
Anticipated expiration: 2030-03-02

Abstract

The utility model discloses a connect branch pipe soon for central air conditioning, including the branch pipe main part, the branch pipe main part is formed with three mouth of pipe portion, three mouth of pipe portion communicates each other, still include the coupling, the front end that connects the body is formed with the supporting part, the supporting part is formed with the inner wall that is used for carrying the copper pipe with the refrigerant and pastes the sealed outer conical surface of pasting and being connected, connect the body and pass through external screw thread spiro union lock nut, lock nut's front portion is formed with the initiative internal conical surface, it places in between the initiative internal conical surface and the sealed outer conical surface to cramp the ring, it forms to be used for to paste the passive outer conical surface of being connected and be used for pasting the interior conical surface of cramping of pasting with the outer wall of refrigerant transport copper pipe and pasting the interior conical surface of being connected to cramp the ring, it is equipped with disconnected seam to cramp the ring, the rear end face. The utility model discloses it is easy and simple to handle with being connected of refrigerant delivery copper pipe.

Description

Quick-connection branch pipe for central air conditioner

Technical Field

The utility model relates to a branch manifold field for central air conditioning, concretely relates to connect branch manifold soon for central air conditioning.

Background

The refrigerant of the central air conditioner is delivered to each evaporator through copper pipes, because the central air conditioning system generally has at least three evaporators, a branch pipe is needed to connect a main delivery copper pipe with a branch copper pipe of the evaporator, the outdoor unit of the central air conditioner delivers the liquid refrigerant to the evaporator, the refrigerant is converted into a gas state through the evaporator and then delivered back to the outdoor unit through another copper pipe, and therefore, each evaporator needs to be correspondingly provided with two branch pipes. Since the structure of each house is different, the refrigerant conveying copper pipe and the branch pipe need to be connected on site, as shown in fig. 12, the branch pipe is actually a tee, fig. 12 schematically shows that the end parts of the refrigerant conveying copper pipe 99 are respectively sleeved on three pipe openings of the branch pipe, at present, the refrigerant conveying copper pipe 99 and the branch pipe are welded by brazing, and since the refrigerant conveying copper pipe 99 of the central air conditioner is generally hidden in the ceiling and arranged close to the wall, the position of the branch pipe is high, and the site welding operation is very difficult, the branch pipe in the prior art needs to be improved.

Disclosure of Invention

An object of the utility model is to overcome prior art's not enough, provide a connect the branch pipe soon for central air conditioning, it is simple and convenient that it is favorable to the refrigerant to carry the connection of copper pipe.

The purpose of the utility model is realized by the following technical scheme.

The utility model discloses a connect branch pipe soon for central air conditioning, including the branch pipe main part, the branch pipe main part is formed with three mouth of pipe portion, and three mouth of pipe portion communicate each other, wherein, including the coupling, the coupling is equipped with lock nut, hoop ring and connects the body, the front end of connecting the body is formed with the supporting part, the supporting part is formed with and is used for pasting the sealed outer cone face of being connected with the inner wall of refrigerant conveying copper pipe, the front end diameter of sealed outer cone face is greater than the rear end diameter of sealed outer cone face, the middle part of connecting the body is formed with the external screw thread, connect the body through the external screw thread spiro union lock nut, the front portion of lock nut is formed with the initiative internal cone face, the front end diameter of initiative internal cone face is less than the rear end diameter of initiative internal cone face, hoop ring is arranged in between the initiative internal cone face and the sealed outer cone face, the clamping ring is provided with a driven outer conical surface which is used for being attached to and connected with the driving inner conical surface in an attached mode and a clamping inner conical surface which is used for being attached to and connected with the outer wall of the refrigerant conveying copper pipe in an attached mode, the clamping ring is provided with a broken slot, the joint pipe body is provided with a limiting end face, the rear end face of the clamping ring is attached to and connected with the limiting end face in an attached mode, the joint pipe body is sleeved at the pipe opening in an adaptive mode, and the joint pipe body is welded with the outer wall of the pipe opening in a.

Preferably, an outer hexagonal head for wrench operation is formed at the rear of the joint pipe body, and the lock nut is formed in a hexagonal column shape.

Preferably, a chamfer is formed at the front end pipe orifice of the joint pipe body.

Compared with the prior art, the utility model, its beneficial effect is: the utility model discloses a pipe joint is equipped with lock nut, hoop ring and joint body, the front end of joint body is formed with the supporting part, the supporting part is formed with and is used for leaning on the sealed outer cone face of being connected with the inner wall of refrigerant conveying copper pipe, the joint body passes through external screw thread spiro union lock nut, lock nut's front portion is formed with the interior circular conical surface of initiative, hoop ring is arranged in between the interior circular conical surface of initiative and the sealed outer cone face, hoop ring becomes has and is used for leaning on the passive outer cone face of being connected with the interior circular conical surface of initiative and is used for leaning on the interior circular conical surface of being connected with the outer wall of refrigerant conveying copper pipe, hoop ring is equipped with disconnected seam, the joint body is formed with the spacing terminal surface, hoop ring's rear end face leans on with the spacing terminal surface and is connected, the adaptation of joint body cup joints the mouth of pipe portion, the outer wall seal welding of joint body and mouth of pipe, then, the locking nut is rotated to ensure that the end part of the refrigerant conveying copper pipe is in sealing connection with the joint pipe body, so the utility model is simple and convenient to operate in connection with the refrigerant conveying copper pipe.

Drawings

Fig. 1 is a schematic view of the structure of the present invention.

Fig. 2 is an enlarged view of fig. 1 at a.

Fig. 3 is a schematic sectional structural view of the lock nut of the present invention.

Fig. 4 is a schematic top view of the lock nut of the present invention corresponding to fig. 3.

Fig. 5 is a schematic cross-sectional view of the joint body according to the present invention.

Fig. 6 is a schematic bottom view of the joint body of the present invention corresponding to fig. 5.

Fig. 7 is a schematic cross-sectional view of the tightening ring of the present invention.

Fig. 8 is a schematic top view of the fastening ring of the present invention corresponding to fig. 7.

Fig. 9 is a schematic view showing a state where the end of the refrigerant transporting copper pipe is inserted into the pipe joint of the present invention.

Fig. 10 is a schematic view of the tightening ring of the present invention in an open state.

Fig. 11 is a schematic view showing the state where the end of the refrigerant transporting copper pipe is connected to the pipe joint of the present invention.

Fig. 12 is a schematic view of a connection structure of a branch pipe and a refrigerant conveying copper pipe in the prior art.

Description of reference numerals: 1-a manifold body; 101-a pipe orifice part; 11-a main pipe section; 12-a first branch pipe portion; 13-a second branch pipe portion; 2-pipe joint; 21-a lock nut; 2101-active internal conical surface; 2102-internal thread; 22-a tightening ring; 2201-passive external conical surface; 2202-hooping the inner conical surface; 2203-rear end face; 2204-breaking the seam; 23-fitting body, 231-support; 2301-sealing the outer conical surface; 2302-external thread; 2303-external hexagonal head; 2304-a limiting end face; 99-refrigerant transporting copper tubing.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The utility model discloses a meet branch pipe soon for central air conditioning, as shown in fig. 1, including branch pipe main part 1, branch pipe main part 1 is formed with three mouth of pipe portion 101, specifically, branch pipe main part 1 includes main pipe portion 11, first branch pipe 12 and second branch pipe portion 13, as shown in fig. 2, mouth of pipe portion 101 is the tip at the mouth of pipe place of main pipe portion 11, first branch pipe 12 and second branch pipe portion 13 promptly, and three mouth of pipe portion 101 communicates each other to branch pipe main part 1 has realized the three-way function, and the above-mentioned description is prior art.

Please note that the following two terms "front" and "back" are defined as follows: the coordinate marks of fig. 2 are applied only to fig. 2 and the drawings corresponding thereto, because the direction from the inside to the outside of the mouthpiece 101 along the central axis of the mouthpiece 101 is defined as from "rear" to "front".

The utility model discloses still include coupling 2, as shown in fig. 2, coupling 2 is equipped with lock nut 21, cramp ring 22 and connects body 23, and coupling 2's material can be the brass. As shown in fig. 5, the front end of the joint pipe body 23 is formed with a support portion 231, the support portion 231 is formed with a sealing outer conical surface 2301 for abutting connection with the inner wall of the refrigerant transporting copper pipe 99, and the front end diameter of the sealing outer conical surface 2301 is larger than the rear end diameter of the sealing outer conical surface 2301, that is, the sealing outer conical surface 2301 is gradually reduced from front to rear. An external thread 2302 is formed at the middle portion of the joint pipe body 23, and the joint pipe body 23 is threadedly coupled to the locking nut 21 through the external thread 2302, as shown in fig. 3, the locking nut 21 is formed with an internal thread 2102 matching the external thread 2302, a driving inner tapered surface 2101 is formed at the front portion of the locking nut 21, and the front end diameter of the driving inner tapered surface 2101 is smaller than the rear end diameter of the driving inner tapered surface 2101, that is, the driving inner tapered surface 2101 is gradually increased from front to rear. As shown in FIG. 1, the gripping ring 22 is disposed between the active inner conical surface 2101 and the sealing outer conical surface 2301. As shown in fig. 7, the tightening ring 22 is formed with a passive external conical surface 2201 for abutting connection with the active internal conical surface 2101 and a tightening internal conical surface 2202 for abutting connection with the outer wall of the refrigerant conveying copper tube 99, the taper of the passive external conical surface 2201 is the same as that of the active internal conical surface 2101, the cross section of the tightening ring 22 may be an isosceles trapezoid, and the taper of the tightening internal conical surface 2202 is also the same as that of the sealing external conical surface 2301. As shown in FIG. 8, the tightening ring 22 is provided with a slit 2204. the slit 2204 is provided to allow the tightening ring 22 to be expanded by an external force or to be compressed inwardly by the driving inner conical surface 2101. As shown in fig. 5, the joint pipe 23 is formed with a limiting end surface 2304, the limiting end surface 2304 is perpendicular to the central axis of the joint pipe 23, as shown in fig. 7 and fig. 2, the rear end surface 2203 of the clamping ring 22 is attached to the limiting end surface 2304, the joint pipe 23 is adapted to be sleeved on the pipe mouth portion 101, as shown in fig. 1, each pipe mouth portion 101 is connected to the pipe joint 2, that is, the number of the pipe joints 2 is three, each pipe mouth portion 101 is inserted into the corresponding joint pipe 23, the joint pipe 23 is welded to the outer wall of the pipe mouth portion 101 in a sealing manner, specifically by brazing, and the welding seam is located at the joint of the rear side surface of the joint pipe 23 and the outer wall of the pipe mouth portion 101 and is welded in a complete circle. Because the welding process of coupling 2 and branch manifold main part 1 is gone on in the mill, the utility model discloses can just deliver the user field usage as central air conditioning's annex after quality testing processes such as pressure test.

As shown in fig. 9, when the present invention is installed and used on site, firstly, the locking nut 21 is rotated to make the locking nut 21 move forward, the locking nut 21 gives way to the open space of the hooping ring 22, then the end of the refrigerant conveying copper tube 99 is sleeved on the supporting portion 231, i.e. the end of the refrigerant conveying copper tube 99 is inserted between the sealed external conical surface 2301 and the hooping internal conical surface 2202, during the insertion process of the end of the refrigerant conveying copper tube 99, the end of the refrigerant conveying copper tube 99 simultaneously pushes the hooping ring 22 open, which can also be understood as expanding the hooping ring 22, fig. 10 schematically shows the state when the hooping ring 22 is expanded, then the locking nut 21 is rotated in the opposite direction to make the locking nut 21 move backward, during the backward movement of the active internal conical surface 2101 of the locking nut 21, the active internal conical surface 2101 presses the passive external conical surface 2201, because the back end surface 2203 of the hooping ring 22 is attached to the limit end face 2304, therefore, the tightening ring 22 cannot move backwards, and as a result, the passive outer conical surface 2201 is pressed by the active inner conical surface 2101 to contract inwards, the tightening inner conical surface 2202 of the tightening ring 22 forces the end portion of the refrigerant conveying copper tube 99 to bend inwards and extend backwards microscopically, as shown in fig. 11, after the locking nut 21 is screwed down with force, the inner wall of the end portion of the refrigerant conveying copper tube 99 is finally completely attached to the outer conical sealing surface 2301, and simultaneously, the tightening inner conical surface 2202 is also attached to the outer wall of the end portion of the refrigerant conveying copper tube 99, and the outer conical sealing surface 2301 is connected with the inner wall of the end portion of the refrigerant conveying copper tube 99 in a sealing manner. It can be seen, the utility model discloses a coupling 2 can with refrigerant copper delivery pipe 99 high-speed joint, refrigerant copper delivery pipe 99 with the utility model discloses a connect easy operation is convenient, has avoided the welding of on-the-spot brazing, and on-the-spot brazing needs oxygen cylinder and acetylene cylinder, and the safety in operating personnel and house can all be threatened to these dangerous goods, so the utility model discloses still do benefit to the operational safety of the on-the-spot installation of central air conditioning.

In addition, since the refrigerant conveying copper pipe 99 of the central air conditioner has a relatively large diameter and a small wall thickness, and particularly, the refrigerant conveying copper pipe 99 for conveying gaseous refrigerant has a larger diameter than the refrigerant conveying copper pipe 99 for conveying liquid refrigerant, the refrigerant conveying copper pipe 99 of the central air conditioner is not suitable for the copper pipe flared joint connection in the prior art, because the flared connection requires the end of the refrigerant conveying copper pipe 99 to be flared by using a flaring tool on site, and the flaring operation requires the refrigerant conveying copper pipe 99 to be clamped from the outside, and then the refrigerant conveying copper pipe 99 is formed into a flared bell by applying axial pressure to the pipe mouth of the refrigerant conveying copper pipe 99 by using a conical tool, and since the refrigerant conveying copper pipe 99 of the central air conditioner has a large and thin diameter, the main body of the refrigerant conveying copper pipe 99 is easily clamped and deformed, and there are few tools available in the market that can perform the flaring operation on the refrigerant conveying copper pipe 99 of the central air conditioner. As shown in fig. 11, because the utility model discloses set up supporting part 231, at the in-process of pressing from both sides tight refrigerant conveying copper pipe 99, made the tip inner wall of refrigerant conveying copper pipe 99 obtain the support, avoided refrigerant conveying copper pipe 99's main part to warp, the utility model discloses still realize the circular cone shrink shaping of refrigerant conveying copper pipe 99 tip through setting up lock nut 21 and combining to bind and encircle 22, still saved flaring tool.

Further, as shown in fig. 5 and 6, an outer hexagonal head 2303 for wrench operation is formed at the rear portion of the joint pipe body 23, and as shown in fig. 4, the lock nut 21 is formed in a hexagonal column shape, and by the above arrangement, an operator can use one wrench to clamp the outer hexagonal head 2303 and another wrench to clamp the lock nut 21 to perform locking operation of the lock nut 21, so that the locking process is simple and efficient. The hex size of the lock nut 21 may be set to be the same as the hex size of the outer hex head 2303, which may also reduce the size of the wrench carried by the field operator.

Further, as shown in fig. 5, a chamfer 2305 is formed at the front end pipe opening of the joint pipe body 23, and the provision of the chamfer 2305 can reduce the resistance to the flow of the refrigerant.

Claims

1. The utility model provides a connect branch pipe soon for central air conditioning, includes branch pipe main part (1), branch pipe main part (1) is formed with three oral area portion (101), and three oral area portion (101) communicate each other, its characterized in that: the pipe joint comprises a pipe joint (2), wherein the pipe joint (2) is provided with a locking nut (21), a hooping ring (22) and a joint pipe body (23), a supporting part (231) is formed at the front end of the joint pipe body (23), a sealing outer conical surface (2301) for being attached to and connected with the inner wall of a refrigerant conveying copper pipe (99) in an attached mode is formed on the supporting part (231), the front end diameter of the sealing outer conical surface (2301) is larger than the rear end diameter of the sealing outer conical surface (2301), an external thread (2302) is formed in the middle of the joint pipe body (23), the joint pipe body (23) is in threaded connection with the locking nut (21) through the external thread (2302), an active inner conical surface (2101) is formed at the front part of the locking nut (21), the front end diameter of the active inner conical surface (2101) is smaller than the rear end diameter of the active inner conical surface (2101), and the hooping ring (22) is arranged between the active inner conical surface (2101 The clamping ring (22) is provided with a passive outer circular conical surface (2201) which is used for being attached to and connected with the active inner conical surface (2101) in an attached mode and a clamping inner conical surface (2202) which is used for being attached to and connected with the outer wall of the refrigerant conveying copper pipe (99) in an attached mode, the clamping ring (22) is provided with a breaking slit (2204), the joint pipe body (23) is provided with a limiting end face (2304), the rear end face (2203) of the clamping ring (22) is attached to and connected with the limiting end face (2304) in an attached mode, the joint pipe body (23) is matched and sleeved with the pipe orifice portion (101), and the joint pipe body (23) is welded to the outer wall of the pipe orifice portion (101) in.

2. The quick connect manifold for a central air conditioner according to claim 1, wherein: an outer hexagonal head (2303) for wrench operation is formed at the rear part of the joint pipe body (23), and the lock nut (21) is designed to be hexagonal column-shaped in shape.

3. The quick connect manifold for a central air conditioner according to claim 1, wherein: a chamfer (2305) is formed at the front end pipe orifice of the joint pipe body (23).