CN202901596U

CN202901596U - Air conditioner connecting pipe

Info

Publication number: CN202901596U
Application number: CN 201220461508
Authority: CN
Inventors: 王积科; 邬鹤争; 陈新平; 何迟
Original assignee: WUHU YUANDA PIPE INDUSTRY Co Ltd
Current assignee: WUHU YUANDA PIPE INDUSTRY Co Ltd
Priority date: 2012-09-12
Filing date: 2012-09-12
Publication date: 2013-04-24
Anticipated expiration: 2022-09-12

Abstract

The utility model discloses an air conditioner connecting pipe. A corrugated pipe is made from double-layer brazing steel pipes with different pipe diameters in a rolling mode, the corrugated pipe is covered by coppering after annealing, a heat preservation cover is sleeved on the corrugated pipe, nuts are sleeved at the two ends of the corrugated pipe, and a horn mouth expanded to manufacture the connecting pipe; the end portions of the two ends of the connecting pipe are respectively folded towards the inner wall of the connecting pipe to form an edgefold reserving a gap with the inner wall of the connecting pipe, the inner wall of the pipe is extruded outwards by the top end of the edgefold to form the horn mouth, and annular concave waves are evenly distributed on the outer wall of the connecting pipe; a pipe connector of an air conditioner is contacted with the top end of the edgefold of the horn mouth of the connecting pipe to form a sealing ring circle; the connecting nuts are screwed tightly, the pipe connector is tightly abutted against the connecting pipe, a contact point moves from the top end of the edgefold to the bottom of the horn mouth of the outer wall of the pipe, and the pipe wall is extruded until the gap between the edgefold and the inner wall of the pipe disappears completely. The novel technical scheme is adopted, when the air conditioner connecting pipe is installed, the connector position is sealed to prevent refrigerant from leaking, and therefore normal use of the air conditioner is guaranteed.

Description

A kind of air conditioner connecting pipe

Technical field

The household appliance technical field that the utility model belongs to, more particularly, the utility model relates to a kind of air conditioner connecting pipe.

Background technique

The connecting tube of prior art air conditioner mostly is greatly copper pipe, have also that to use copper clad steel pipe, its horn mouth with the air conditioner pipe joint be that tube end directly enlarged formation is horn-like, during the copper pipe bell mouth expanding, bell-mouthed bottom does not have circular arc, and is very large to the damage of copper pipe; Copper pipe individual layer horn mouth, extrusion deformation degree is little, and the too small sealing that can occur during installation exerting oneself does not guarantee, the defective of the macrolesion copper pipe of exerting oneself, installation difficulty is large, and is higher to workman's installation specification; And steel tube surface is used plating or spraying copper, owing to the specific elongation of two kinds of materials is different, pushes when the individual layer horn mouth of prior art is installed then to cause the oral area cracking, and extruding force is not up to standard, and jointing will cause secondary refrigerant leakage, and air conditioner can't use.

The model utility content

The jointing sealing prevented secondary refrigerant leakage when problem to be solved in the utility model provided a kind of installation, and then guaranteed normal air conditioner connecting pipe and the preparation and application thereof of using of air conditioner.

To achieve these goals, the technological scheme that the utility model is taked is: a kind of air conditioner connecting pipe that provides, comprise the connecting tube that steel pipe that copper sheet coats is made, the end at described connecting tube two ends respectively to inner tube wall be folded to form one with inner tube wall stay gapped flanging, the outside extruded tube inwall of the top end of flanging forms horn mouth, the dimpled grain of the uniform annular of described connecting tube outer wall.

Preferably, bell-mouthed root is set to arc and forms horn mouth heel circular arc.

Preferably, the connecting tube two ends are socketed with respectively the attaching nut.

Preferably, the outer wall of attaching nut's aperture and connecting tube adapts.

Preferably, the dimpled grain of connecting tube outer wall in the shape of a spiral.

A kind of method of weighing air conditioner connecting pipe for preparing, the double-layer copper brazed tube of different tube diameters makes its outer wall have spiral helicine dimpled grain through roll extrusion, after the annealing alloyed copper is coated thereon, puts lagging, and at its two ends, then bell mouth expanding is made connecting tube with nut sleeve.

Extruding after a kind of using method of air conditioner connecting pipe, air conditioner pipe joint contact with the bell-mouthed flanging of connecting tube top is until the inclined-plane contact forms a circle seal ring; Screw the attaching nut, pipe joint and connecting tube are close to, and point of contact is mobile to pipe outer wall horn mouth bottom from the flanging top, the extruding tube wall, seal ring quantity increases, and continues to screw the attaching nut, pipe joint and connecting tube surface of contact strengthen gradually, until the gap complete obiteration of flanging and inner tube wall.

Adopt the technical solution of the utility model, connecting tube adopts the copper clad steel pipe, has reduced about 2/3 cost of material; Horn mouth is the double layer construction that forms after the flanging extruding, bell-mouthed flanging layer is equivalent to a seal ring, and owing to self have the mechanical resistance of outwards opening to end double-deck horn mouth coincidence, thus increased the axial compression power between air conditioner pipe joint and connecting tube, guaranteed its sealing; Connecting tube has increased the radius of horn mouth bottom circular arc, when being subject to axial force, the stressed extruding force that is converted between air conditioner pipe joint and connecting tube of horn mouth bottom has avoided the horn mouth bottom stressed and impaired and make better tightness between air conditioner pipe joint and connecting tube; The surface of contact of horn mouth and pipe joint and nut is tightr; The contact area is double-deck, and interlayer guarantees certain elasticity, is equivalent to increase spring sealed circle; Cross section is outstanding, and is yielding, forms linear sealing during installation; Till only requiring during installation to tighten, copper pipe is twisted the defective that does not tightly produce leakage or exert oneself excessive infringement horn mouth generation leakage when having overcome the prior art installation because of the deficiency of exerting oneself; This condensation pipe of air conditioner uses double-layer copper brazed tube to make, and has solved the difficult problem of resource shortage, has greatly improved economic and social benefit.

Description of drawings

The below is briefly described the expressed content of each width of cloth accompanying drawing of this specification and the mark among the figure:

Fig. 1 is the schematic diagram of a kind of air conditioner connecting pipe of the utility model;

Fig. 2 is the bell-mouthed partial schematic diagram shown in a kind of air conditioner connecting pipe of the utility model shown in Figure 1;

Fig. 3 is the schematic diagram before the air conditioner pipe joint shown in a kind of air conditioner connecting pipe of the utility model is connected with the connecting tube horn mouth;

Fig. 4 is the air conditioner pipe joint shown in a kind of air conditioner connecting pipe of the utility model and schematic diagram after the connecting tube horn mouth is connected.

Be labeled as among the figure: 1, connecting tube; 2, horn mouth; 3, attaching nut; 4, air conditioner pipe joint; 5, flanging; 6, horn mouth bottom circular arc.

Embodiment

The below contrasts accompanying drawing, by the description to embodiment, effect and working principle, manufacturing process and operation using method etc. to the mutual alignment between the shape of embodiment of the present utility model such as related each member, structure, the each several part and annexation, each several part, be described in further detail, with help those skilled in the art to model utility of the present utility model conceive, technological scheme has more complete, accurate and deep understanding.

Fig. 1 is the schematic diagram of a kind of air conditioner connecting pipe of the utility model; Fig. 2 is a kind of air conditioner connecting pipe of the utility model shown in Figure 1, the double-layer copper brazed tube of different tube diameters makes its outer wall have spiral helicine dimpled grain through roll extrusion, after the annealing alloyed copper is coated thereon, put lagging, attaching nut 3 is enclosed within its two ends, then bell mouth expanding is made connecting tube 1, the end at connecting tube 1 two ends respectively to inner tube wall be folded to form one with inner tube wall stay gapped flanging 5, the outside extruded tube inwall of the top end of flanging 5 forms horn mouth 2, the dimpled grain of the uniform annular of connecting tube 1 outer wall, the root of horn mouth 2 is set to arc and forms horn mouth root circular arc 6, connecting tube 1 two ends are socketed with respectively attaching nut 3, the outer wall of attaching nut 3 aperture and connecting tube 1 adapts, and the dimpled grain of connecting tube 1 outer wall in the shape of a spiral.

Extruding after the using method of air conditioner connecting pipe, air conditioner pipe joint 4 contact with the flanging top of connecting tube 1 horn mouth 2 is until the inclined-plane contact forms a circle seal ring; Screw attaching nut 3, pipe joint 4 is close to connecting tube 1, point of contact moves from the flanging top to pipe outer wall horn mouth 2 roots, the extruding tube wall, seal ring quantity increases, continue to screw attaching nut 3, pipe joint 4 strengthens gradually with connecting tube 1 surface of contact, until the gap complete obiteration of flanging and inner tube wall.

Adopt this mounting type, connecting tube 1 adopts the copper clad steel pipe, has reduced about 2/3 cost of material; Horn mouth 2 is the double layer construction that forms after flanging 5 extruding, the flanging layer of horn mouth 2 is equivalent to a seal ring, and overlap owing to self there being the mechanical resistance of outwards opening to end double-deck horn mouth, thereby increased the axial compression power of 1 of air conditioner pipe joint 4 and connecting tube, guaranteed its sealing; The radius that connecting tube has increased horn mouth bottom circular arc forms horn mouth bottom circular arc 6, when being subject to axial force, the stressed extruding force that is converted between air conditioner pipe joint and connecting tube of horn mouth 2 bottoms has avoided the horn mouth bottom stressed and impaired and make the better tightness of 1 of air conditioner pipe joint 4 and connecting tube; Horn mouth 2 is tightr with pipe joint 4 and attaching nut's 3 surface of contact; The contact area is double-deck, and interlayer guarantees certain elasticity, is equivalent to increase spring sealed circle; Cross section is outstanding, and is yielding, forms linear sealing during installation; Till only requiring during installation to tighten, copper pipe is twisted the defective that does not tightly produce leakage or exert oneself excessive infringement horn mouth 2 generation leakages when having overcome the prior art installation because of the deficiency of exerting oneself.

The above has carried out exemplary description to the utility model by reference to the accompanying drawings; obviously the utility model specific implementation is not subjected to the restriction of aforesaid way; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technological scheme carry out; or without improving design of the present utility model and technological scheme are directly applied to other occasion, all within protection domain of the present utility model.

Claims

1. air conditioner connecting pipe, comprise the connecting tube that steel pipe that the thin layer alloyed copper coats is made, it is characterized in that: the end at described connecting tube two ends respectively to inner tube wall be folded to form one with inner tube wall stay gapped flanging, the outside extruded tube inwall of the top end of flanging forms horn mouth, the dimpled grain of the uniform annular of described connecting tube outer wall.

2. according to a kind of air conditioner connecting pipe claimed in claim 1, it is characterized in that: described bell-mouthed root is set to arc and forms horn mouth heel circular arc.

3. according to a kind of air conditioner connecting pipe claimed in claim 1, it is characterized in that: described connecting tube two ends are socketed with respectively the attaching nut.

4. according to a kind of air conditioner connecting pipe claimed in claim 3, it is characterized in that: described attaching nut's aperture and the outer wall of connecting tube adapt.

5. according to claim 1 or 2 or 3 described a kind of air conditioner connecting pipes, it is characterized in that: the dimpled grain of described connecting tube outer wall in the shape of a spiral.