CN214839039U - Connecting device for maintaining air conditioner pipeline - Google Patents

Abstract

The utility model discloses a connecting device of maintenance air conditioner pipeline, include: the inner diameter of the first sleeving section is matched with the outer diameter of the inner inserting pipe so that the inner inserting pipe can be sleeved on the inner inserting pipe, and the inner diameter of the second sleeving section is matched with the outer diameter of the outer sleeve so that the outer sleeve can be sleeved on the outer sleeve; the first connecting ring is provided with a first nesting section at one end and a first tightening section at the other end, the inner diameter of the first nesting section is larger than the outer diameter of the first sleeving section, and the inner diameter of the first tightening section is gradually reduced from the first nesting section to the first tightening section until the inner diameter of the first tightening section is smaller than the outer diameter of the first sleeving section; and one end of the second connecting ring is a second sleeving section, the other end of the second connecting ring is a second tightening section, the inner diameter of the second sleeving section is larger than the outer diameter of the second sleeving section, and the inner diameter of the second tightening section is gradually reduced from the second sleeving section to the second tightening section until the inner diameter of the second tightening section is smaller than the outer diameter of the second sleeving section.

Description

Connecting device for maintaining air conditioner pipeline

Technical Field

The utility model relates to an air conditioning equipment technical field especially relates to a connecting device of maintenance air conditioner pipeline.

Background

The function of the split air conditioner connecting pipe is to communicate the outdoor unit with the indoor unit to form a passage, and to allow refrigerant (freon, commonly called snow) to pass through, thereby completing heat exchange and achieving the cooling or heating function. For example, in a cooling mode (i.e., summer), the indoor unit absorbs indoor heat (i.e., discharges cold air), and the snow is changed into low-pressure medium-temperature snow, which is then discharged to the outdoor unit through a large copper pipe. The larger copper tube can be touched by hand, and the feeling is cooler, and meanwhile, water is on the surface. The snow seeds are discharged from the outdoor through the copper pipe, compressed by the compressor, and then enter the heat exchanger of the outdoor unit to release heat (the fan rotates). Then the snow seeds are changed into middle-temperature and middle-pressure snow seeds, and enter the room through another copper pipe (smaller copper pipe), and then pass through a throttle valve (such as a capillary pipe or an expansion valve) before entering the indoor machine, so that the volume of the throttle valve is small, but the volume of the throttle valve is suddenly increased after the throttle valve is passed, so that the snow seeds can be instantly changed into low-temperature and low-pressure snow seeds, and then the heat is absorbed. Thus, a refrigeration cycle is completed. If the heating cycle is adopted, the opposite is true. The two pipes are connected with the indoor unit, and generally, the thinner pipe is an inlet pipe, and the thicker pipe is an outlet pipe. The difference between the inlet pipe and the outlet pipe is that the inlet pipe is thin, and is followed by a capillary or a thermostatic expansion valve, while the outlet pipe is large.

Fig. 1 is a connection system of air conditioner pipelines, which comprises an air conditioner internal unit 1, an air conditioner external unit 2, an internal insertion pipe 3 and an external sleeve pipe 4. Wherein the inner cannula 3 and the outer cannula 4 are connected in a manner as shown in fig. 2, and the inner cannula 3 is welded with the male connector 51; the outer sleeve 4 is flared, and the inner screwed joint 52 is sleeved in the outer sleeve 4; the internal and external thread joints are connected to achieve the purpose of expansion joint.

When the refrigerant leaks from the joint between the inner tube 3 and the outer tube 4 for after-sales repair, a section between the inner tube 3 and the outer tube 4, together with the nipple 51 and the female nipple 52, needs to be cut off. Since the copper pipe is cut short, the inner socket 3 and the outer socket 4 are then reconnected by means of two sets of male and female screw joints 51, 52. The maintenance process is complex in the maintenance mode, two groups of male connectors 51 and female connectors 52 are needed to connect the inner machine copper tube 3 and the outer sleeve 4 in the previous connection between the inner machine copper tube 3 and the outer sleeve 4, and the possibility of seepage after maintenance is high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a connecting device of maintenance air conditioner pipeline, completion maintenance air conditioner's that can be quick tube coupling improves after-sale quality.

The embodiment of the utility model provides an adopted technical scheme is: a connection device for servicing air conditioning piping, comprising: a two-way pipe, wherein one end of the two-way pipe is a first sleeving section, the other end of the two-way pipe is a second sleeving section, the inner diameter of the first sleeving section is matched with the outer diameter of the inner inserting pipe so that the two-way pipe can be sleeved on the inner inserting pipe, and the inner diameter of the second sleeving section is matched with the outer diameter of the outer sleeve so that the two-way pipe can be sleeved on the outer sleeve; the pipe diameter of the first straight section is smaller than the outer diameter of the first sleeving section, the inner diameter of the first sleeving section is larger than the outer diameter of the first sleeving section, and the inner diameter of the first tightening section is gradually reduced from the first sleeving section to the first tightening section until the inner diameter of the first tightening section is smaller than the outer diameter of the first sleeving section; one end of the second connecting ring is a second sleeving section, the other end of the second connecting ring is a second tightening section, a second straight section is arranged in the middle of the second connecting ring, the pipe diameter of the second straight section is smaller than the outer diameter of the second sleeving section, the inner diameter of the second sleeving section is larger than the outer diameter of the second sleeving section, and the inner diameter of the second tightening section is gradually reduced from the second sleeving section to the second tightening section until the inner diameter of the second tightening section is smaller than the outer diameter of the second sleeving section.

According to the utility model discloses connecting device of maintenance air conditioner pipeline has following beneficial effect at least:

1. the traditional process adopts the live welding and the threaded connection, and the cold extrusion connection technology is adopted, so that the process cost is much lower.

2. The installation difficulty is greatly reduced, the technical requirements on workers are reduced, the labor intensity is reduced, and the labor cost is obviously reduced.

3. Welding operation is not needed in the connection process, so that potential safety hazards caused by open fire operation and sound, light and gas pollution and occupational disease hazards caused by flame welding are avoided.

4. The maintenance quality is good, and the leakage rate after maintenance is reduced.

5. Only a small section of the original pipeline connected with the original joint is cut, a larger section is not required to be cut like the original maintenance, and consumable materials are reduced.

According to some embodiments of the present invention, the entrance of the first nesting section is a cone shape, and the inner diameter of the first nesting section is gradually reduced from the first nesting section to the first tightening section.

According to some embodiments of the invention, the entrance of the second nesting section is conical, and the inner diameter of the second nesting section is reduced continuously in the direction of the second tightening section.

According to some embodiments of the invention, the outer tube wall of the first casing section is provided with a first outer bulge loop.

According to some embodiments of the present invention, the inner pipe wall of the first casing section is provided with a first inner annular groove at a position corresponding to the first outer protruding ring.

According to some embodiments of the invention, the outer tube wall of the second encasement section is provided with a second outer bulge loop.

According to some embodiments of the present invention, the second casing section has a second inner annular groove at a position corresponding to the second outward protruding ring.

According to some embodiments of the utility model, the outer pipe wall middle part of two-way pipe is equipped with annular screens groove.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic diagram of a current connection system for air conditioning piping;

fig. 2 is a schematic diagram of the pipe connection between the air conditioner internal unit and the air conditioner external unit;

FIG. 3 is an exploded view of a coupling device according to an embodiment of the present invention;

FIG. 4 is a schematic view of the attachment device being installed;

FIG. 5 is a schematic structural view of a two-way pipe;

FIG. 6 is a cross-sectional view of the two-way tube;

FIG. 7 is a cross-sectional view of the first link ring;

FIG. 8 is a cross-sectional view of the secondary connecting ring;

fig. 9 is a schematic view of an installation process of a connecting device according to an embodiment of the present invention.

Reference numerals:

an air conditioner internal unit 1, an air conditioner external unit 2, an inner inserting pipe 3, an outer sleeve 4, a threaded joint 51 and an inner threaded joint 52;

a two-way pipe 100, a first sleeving section 110, a second sleeving section 120, a first outer convex ring 111, a first inner annular groove 112, a second outer convex ring 121, a second inner annular groove 122 and a clamping groove 130;

a first connecting ring 200, a first nesting section 210, a first tightening section 220, a first straight section 230;

a second attachment ring 300, a second nesting section 310, a second tightening section 320, a second linear section 330;

the tool 400 is installed.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.

A connecting device for repairing an air conditioning pipe according to an embodiment of the present invention will be described with reference to fig. 3 to 9.

As shown in fig. 3 and 4, according to the utility model discloses a connecting device of maintenance air conditioner pipeline includes:

a two-way pipe 100, one end of the two-way pipe 100 is a first sleeving section 110, the other end is a second sleeving section 120, the inner diameter of the first sleeving section 110 is matched with the outer diameter of the inner inserting pipe 3 so as to be sleeved on the inner inserting pipe 3, and the inner diameter of the second sleeving section 120 is matched with the outer part of the outer sleeve 4 so as to be sleeved on the outer sleeve 4;

a first connection ring 200, one end of the first connection ring 200 is a first nesting section 210, the other end is a first tightening section 220, the middle is a first straight section 230, the pipe diameter of the first straight section 230 is smaller than the outer diameter of the first nesting section 110, the inner diameter of the first nesting section 210 is larger than the outer diameter of the first nesting section 110, and the inner diameter of the first tightening section 220 is gradually reduced from the first nesting section 210 to the first tightening section 220 until the inner diameter is smaller than the outer diameter of the first nesting section 110;

and a second connecting ring 300, wherein one end of the second connecting ring 300 is a second sleeving section 310, the other end is a second tightening section 320, the middle is a second straight section 330, the pipe diameter of the second straight section 330 is smaller than the outer diameter of the second sleeving section 120, the inner diameter of the second sleeving section 310 is larger than the outer diameter of the second sleeving section 120, and the inner diameter of the second tightening section 320 is gradually reduced from the second sleeving section 310 to the second tightening section 320 until the inner diameter is smaller than the outer diameter of the second sleeving section 120.

As shown in fig. 3 and 9, the maintenance process of the air conditioning pipe is as follows:

step S1: shearing off the joint part of the air conditioner pipeline;

step S2: the mounting connection of the first encasement segment 110 to the inner insert tube 3 comprises:

step S21: first, the first connecting ring 200 is fitted around the inner tube 3, and then the first fitting segment 110 is fitted around the inner tube 3;

step S22: by means of the installation tool 400, the first connection ring 200 is pushed to slide onto the first nesting section 110 and continuously moves towards the first nesting section 110 until the gap between the first nesting section 110 and the inner cannula 3 disappears, and the installation connection of the first nesting section 110 and the inner cannula 3 is completed.

Since the inner diameter of the first tightening segment 220 gradually decreases from the first insertion segment 210 to the first tightening segment 220 until it is smaller than the outer diameter of the first sleeving segment 110, during the advancing process, the first tightening segment 220 applies a radial pressure to the first sleeving segment 110, and the first sleeving segment 110 is forced to contract radially until it contacts the inner cannula 3. The diameter of the first straight section 230 is not changed, and the first straight section 230 and the first tightening section 220 act together to press the first sheathing section 110 to be fully plastically deformed and then to be 'embedded' in the inner intubation tube 3 to complete locking connection and stop back, so that the first intubation tube connection ring 200 is prevented from being slowly loosened and retreated due to vibration during long-time use of the connection part.

As the contact stress between the first nesting section 110 and the inner insert 3 increases, the gap between the two decreases, and when the pressure reaches a certain level, the normal load increases sufficiently to cause significant plastic deformation of the surface, and after a greater axial extension of the first nesting section 110, until the gap between the first nesting section 110 and the inner insert 3 disappears, the leakage between the first nesting section 110 and the inner insert 3 can be reduced to an undetectable level, essentially reaching "zero leakage". Thereby completing the installation connection of the first encasement segment 110 to the inner cannula 3.

Step S3: the second sleeving section 120 is connected with the outer sleeve 4 in a mounting manner, and comprises:

step S31: firstly, the second connecting ring 300 is sleeved on the outer sleeve 4, and then the second sleeving section 120 is sleeved on the outer sleeve 4;

step S32: by means of the installation tool 400, the second connection ring 300 is pushed to slide onto the second sleeving section 120 and continuously moves towards the second sleeving section 120 until the gap between the second sleeving section 120 and the outer sleeve 4 disappears, and the installation connection of the second sleeving section 120 and the outer sleeve 4 is completed.

In some embodiments of the present invention, as shown in fig. 7, the entrance of the first insertion section 210 is tapered, and the inner diameter thereof decreases from the first insertion section 210 to the first tightening section 220.

In some embodiments of the present invention, as shown in fig. 8, the entrance of the second nesting section 310 is tapered, and the inner diameter thereof decreases from the second nesting section 310 to the second tightening section 320.

The inlets of the first nesting section 210 and the second nesting section 310 are arranged in a conical shape, so that the first nesting section 210 and the second nesting section 310 can be conveniently nested in the first nesting section 110 and the second nesting section 120 respectively, and the construction efficiency is improved.

In some embodiments of the present invention, as shown in fig. 5 and 6, the outer pipe wall of the first casing section 110 is provided with a first outwardly protruding ring 111.

By providing the first outward protruding ring 111, in the process of continuously advancing the first connection ring 200, when encountering the first outward protruding ring 111, since the first outward protruding ring 111 protrudes relatively, the resistance force received by the first connection ring 200 increases, and the degree of plastic deformation of the first sheathing section 110 at the first outward protruding ring 111 increases greatly, so that the gap between the first sheathing section 110 and the inner cannula 3 is eliminated more easily.

In a further embodiment of the present invention, as shown in fig. 5 and 6, the inner pipe wall of the first casing section 110 is provided with a first inner annular groove 112 at a position corresponding to the first outer convex ring 111.

Through setting up first interior annular groove 112, reduce the thickness of first suit section 110 in first outer bulge loop 111 department, avoid first suit section 110 because first outer bulge loop 111 exists thickness too big, be difficult for producing plastic deformation.

Likewise, a second external collar 121 is provided on the outer tube wall of the second sheathing section 120. And a second inner annular groove 122 is formed on the inner pipe wall of the second sheathing section 120 at a position corresponding to the second outer convex ring 121.

In a further embodiment of the present invention, as shown in fig. 5, an annular locking groove 130 is formed in the middle of the outer wall of the two-way pipe 100.

As shown in fig. 9, by providing the locking groove 130, when the second connection ring 300 is installed, one of the jaws of the installation tool 400 is locked in the locking groove 130 and fixed, and the other jaw pushes the second connection ring 300 to slide until the second connection ring 300 is installed in place.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (8)

1. A connecting device for repairing air conditioner pipes, comprising:

a two-way pipe, wherein one end of the two-way pipe is a first sleeving section, the other end of the two-way pipe is a second sleeving section, the inner diameter of the first sleeving section is matched with the outer diameter of the inner inserting pipe so that the two-way pipe can be sleeved on the inner inserting pipe, and the inner diameter of the second sleeving section is matched with the outer diameter of the outer sleeve so that the two-way pipe can be sleeved on the outer sleeve;

the pipe diameter of the first straight section is smaller than the outer diameter of the first sleeving section, the inner diameter of the first sleeving section is larger than the outer diameter of the first sleeving section, and the inner diameter of the first tightening section is gradually reduced from the first sleeving section to the first tightening section until the inner diameter of the first tightening section is smaller than the outer diameter of the first sleeving section;

one end of the second connecting ring is a second sleeving section, the other end of the second connecting ring is a second tightening section, a second straight section is arranged in the middle of the second connecting ring, the pipe diameter of the second straight section is smaller than the outer diameter of the second sleeving section, the inner diameter of the second sleeving section is larger than the outer diameter of the second sleeving section, and the inner diameter of the second tightening section is gradually reduced from the second sleeving section to the second tightening section until the inner diameter of the second tightening section is smaller than the outer diameter of the second sleeving section.

2. The connecting device for repairing air conditioning piping as claimed in claim 1, wherein: the inlet of the first nesting section is in a conical shape, and the inner diameter of the first nesting section is continuously reduced from the first nesting section to the first tightening section.

3. The connecting device for repairing air conditioning piping as claimed in claim 1, wherein: the inlet of the second sleeving-in section is in a conical shape, and the inner diameter of the inlet is continuously reduced from the second sleeving-in section to the second tightening section.

4. The connecting device for repairing air conditioning piping as claimed in claim 1, wherein: and a first convex ring is arranged on the outer pipe wall of the first sleeving section.

5. The connecting device for repairing air conditioning piping as claimed in claim 4, wherein: and a first inner annular groove is formed in the position, corresponding to the first outer convex ring, of the inner pipe wall of the first sleeving section.

6. The connecting device for repairing air conditioning piping as claimed in claim 1, wherein: and a second convex ring is arranged on the outer pipe wall of the second sleeving section.

7. The connecting device for repairing air conditioning piping as claimed in claim 6, wherein: and a second inner ring groove is formed in the position, corresponding to the second convex ring, of the inner pipe wall of the second sleeving section.

8. The connecting device for repairing air conditioning piping as claimed in claim 1, wherein: and the middle part of the outer pipe wall of the two-way pipe is provided with an annular clamping groove.

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