CN2428669Y

CN2428669Y - Connection tube for split air-conditioner for room

Info

Publication number: CN2428669Y
Application number: CN 00242026
Authority: CN
Inventors: 吴岳明
Original assignee: REFRIGERATING PARTS FACTORY XI
Current assignee: REFRIGERATING PARTS FACTORY XI
Priority date: 2000-07-03
Filing date: 2000-07-03
Publication date: 2001-05-02
Anticipated expiration: 2010-07-03

Abstract

The utility model relates to a connection pipe for split air conditioner in a room, composed of a pipe 3, connecting nuts 1 and a heat insulation pipe 2. The utility model is characterized in that the end of the pipe 3 is provided with a disc-shaped step an in a cold-extruded and chopping mode; the outer end of the step a is provided with a straight pipe section b which is coaxial with the pipe, and the outer diameter of the straight pipe section b is sheathed with an O-shaped ring 4 playing a sealing function. When the connection pipe is arranged, the O-shaped ring 4, the end surface of a connection joint and the connecting nuts 1 form axial O-shaped ring sealing. The utility model has the advantages of reasonable structural design, good sealing performance and easy, convenient and reliable installation, the probability of the refrigerant leakage is reduced, and the service life of the air conditioner is extended.

Description

The split type room air conditioner connecting tube

The utility model relates to a kind of split type room air conditioner connecting tube, and it is that the pipeline that is used for split type room air conditioner indoor units and outdoor Crew Cooling System is connected.

Present split type room air conditioner connecting tube, be to form with copper pipe, aluminum or aluminum alloy pipe manufacturer, the pipe two ends respectively have an attaching nut, and two end part are 90 ° of horn mouths, with air conditioner indoor machine, when outdoor unit links, 90 ° of conical surfaces of pipe horn mouth and externally connected pipe jointing fit tightly under attaching nut and the effect of jointing screw thread power, to guarantee the mating face sealing, therefore, 90 ° of horn mouth internal surfaces of pipe, 90 ° of male cone (strobilus masculinus) surface quality of jointing require high; Because it is crooked that interior male cone (strobilus masculinus) in transportation, easily pull, damage in the installation process, has during installation and processing, is difficult in the use guarantee the joint high-seal, cause that refrigeration agent leaks slowly and air conditioner can not be freezed; Particularly with the air conditioner connecting tube of aluminum alloy manufacturing, Tensile strength is low, installs to have often the pipe horn mouth is drawn bad phenomenon.

The purpose of this utility model provides a kind ofly to be compared with the connecting tube of present use, and the tube end more reasonable structure connects better tightness, install accurately easily, and the high split type room air conditioner connecting tube of join strength.

For achieving the above object, split type room air conditioner connecting tube of the present utility model is made up of pipe, the thermal insulation pipe that is enclosed within the attaching nut at pipe two ends and is enclosed within pipe outside, it is characterized in that: the tube end of connecting tube has once the cold-extruded pier presses the disc step that forms, the center line of disc step and pipe central lines, have in the outer end of disc step one with the straight length of pipe coaxial line, on the external diameter of straight length, be with an O shape circle that seals.When this connecting tube is connected with the externally connected pipe jointing, disc step outer end straight length insert jointing positioning hole location, when attaching nut and jointing screw thread screw, impacting force reaches the disc step by attaching nut's spiral shell, O type circle is pressed to externally connected pipe jointing end face along the pipe shaft axis, form axial seal with O ring.

The external diameter of the comparable pipe of external diameter of described straight length little or etc. big.The O shape loop material that is with on the straight length external diameter is anti-fluorine rubber.

This model utility is owing to adopted the seal with O ring structure, and therefore, coupled pipe seal suface processing quality can reduce; Because the seal with O ring structure is soft seal, therefore, its sealability is than the hard good seal of former conical surface horn mouth; Again owing to when installing and using, the pipe straight length is inserted in the externally connected pipe jointing positioning hole, the accurate location before promptly finishing screw thread and screwing, therefore, it is easy, convenient and reliable to install.

Following accompanying drawing provides structural representation of the present utility model:

Fig. 1 is a sectional view of the present utility model;

The externally connected pipe jointing structure sectional view of Fig. 2 for being connected with the described connecting tube of Fig. 1;

Fig. 3 is the structure sectional view of connecting tube in the prior art;

The externally connected pipe jointing structure sectional view of Fig. 4 for being connected with Fig. 3 connecting tube.

Among the figure: 1 is the attaching nut, 2 is thermal insulation pipe, and 3 is pipe, and 4 are O shape circle, 5 are dustproof plug, 6 is the externally connected pipe jointing, and a is the disc step, and b is a straight length, c is an externally connected pipe jointing connecting thread, d is jointing installing and locating hole, and e is 90 ° of horn mouths of pipe of prior art connecting tube end, and f is the 90 ° of male cone (strobilus masculinus)s of jointing that are connected with connecting tube in the prior art.

Below in conjunction with drawings and Examples the utility model content is further described:

The utility model is made up of pipe 3, the thermal insulation pipe 2 that is enclosed within the attaching nut 1 at pipe two ends and is enclosed within pipe outside, tube end has the disc step a that forms once cold pier, step a and pipe 3 central lines, have in the exterior edge face of step a one with the straight length b of pipe coaxial line, straight length b external diameter is with O type circle 4.The utility model can be raised in the inlet pipe for preventing dust with reference to existing split type room air conditioner connecting tube before installing and using, and twists a dustproof plug 5 at attaching nut 1 place.

When the utility model was made, its technological process is: pipe was stretching, and--------------------upper O-shape ring----is twisted dustproof plug----dish circle packing to two ends pier disc step to the cover thermal insulation pipe to go up the attaching nut in the scale blanking.End pier disc step can be realized on special-purpose pier nose machine, the necessary anti-refrigeration agent of O shape circle material by connecting tube, and attaching nut 1 is preferably material of the same race with pipe 3.

During use, twist and to remove dustproof plug 5, stretching pipe, straight length b that will band O shape circle inserts in the externally connected pipe jointing positioning hole d, screws in attaching nut 1 among the jointing outside thread c and tightens and promptly finish installation.

Claims

1, a kind of split type room air conditioner connecting tube, by pipe (3), the thermal insulation pipe (2) that is enclosed within the attaching nut (1) at pipe (3) two ends and is enclosed within pipe (3) outside is formed, it is characterized in that there is the disc step (a) that forms once cold-extruded pier pressure connecting tube pipe (3) end, the central lines of the center line of step (a) and pipe (3), have in the outer end of step (a) one with the straight length (b) of pipe coaxial line, on the external diameter of straight length (b), be with an O shape circle (4) that seals.

2, by the described split type room air conditioner connecting tube of claim 1, the diameter that it is characterized in that described straight length (b) is littler or wait greatly than the diameter of pipe (3).

3,, it is characterized in that O shape circle (4) material on the described straight length (b) is anti-fluorine rubber by the described split type room air conditioner connecting tube of claim 1.