WO2010117120A1

WO2010117120A1 - Fitting device for refrigerant

Info

Publication number: WO2010117120A1
Application number: PCT/KR2009/006644
Authority: WO
Inventors: 김일근
Original assignee: (주)로커스
Priority date: 2009-04-08
Filing date: 2009-11-12
Publication date: 2010-10-14

Abstract

The present invention relates to a fitting device for refrigerant which is configured to reduce the time required for pipe fitting by removing the need for welding work when connecting pipes for refrigerant, to prevent damage to pipes which may occur at the time of welding, to enable effective fitting between pipes existing in a place difficult for welding work, to save pipe fitting costs, and to remove the leakage of refrigerant flowing in pipes. The fitting device for refrigerant of the present invention basically comprises a connection element having connection screw parts formed on both sides of the outer periphery, and a 1st inclined stage, a 1st horizontal stage and a central stage formed on the inner periphery, a nut element screw-coupled with the connection element, a back ferrule element (30) inserted into the nut element and positioned between the nut element and the connection element, and a seat (40) mounted to the inner periphery of the connection element between the 1st horizontal stage and the central stage.

Description

[Correction 27.11.2009 by Rule 26] Refrigerant fittings

The present invention relates to a refrigerant fitting device, and more particularly, to a refrigerant fitting device that enables faster and more efficient fitting between pipes used for the flow of refrigerant without welding.

Generally, refrigeration cycles are used for various purposes in various buildings, indoors, and factories. In this refrigeration cycle, a pipe through which a refrigerant flows is used, and its length varies depending on the purpose of use.

Such pipes are usually made of aluminum, and when joining pipes, they have conventionally taken the way of welding.

However, when fitting the pipe by the welding operation as described above, there is a problem that takes a long time, there is a risk that the pipe is damaged by the spark generated during the welding operation.

In addition, there was a limitation that the pipe-to-pipe fitting work cannot be performed at a position where welding work is difficult, and there is a problem that the cost is increased by the pipe-to-pipe fitting work by welding.

The present invention has been proposed to solve the above-mentioned problems, and an object thereof is to provide a fitting device for a refrigerant in which time required for pipe-to-pipe fitting is saved.

Another object of the present invention is to provide a refrigerant fitting device that can prevent the loss of pipes that can be generated during the welding operation, and can effectively perform the fitting operation between the pipes present in a difficult position of the welding operation.

Still another object of the present invention is to provide a refrigerant fitting device having excellent airtightness so that the refrigerant does not leak even when testing whether the refrigerant leaks in the state applied to the fitting between the pipes.

Still another object of the present invention is to provide a fitting device for a refrigerant which can prevent corrosion and improve surface hardness.

In order to achieve the above object, in the present invention, the inner through and back through the fluid flow, connecting threaded portion 12 is formed on the outer peripheral surface of both side ends, respectively, and inclined in the shape of the outer light inner narrow in the inner central direction at both side ends of the inner peripheral surface The first number so that the inner diameter is smaller than the inner diameter of the first inclined end 14 to be formed, the first horizontal end 16 and the first horizontal end 16 formed extending from the first inclined end 14 A connection member 10 having a central end 18 extending from the flat end 16; A pair of nut members 20 having an inside penetrating back and forth and having a nut screw portion 22 formed on an inner circumferential surface for screwing to the connection screw portion 12; A second horizontal end 32 is formed between the connecting member 10 and the nut member 20 and inserted into the nut member 20, and is horizontally formed on an outer circumferential surface thereof. Has a steep inclined end 34 is formed to be inclined to extend from the horizontal end 32, the gentle inclined end 36 is formed to extend from the sudden inclined end 34 so that the inclination is more gentle than the sudden inclined end 34 A back ferrule member 30; And a seat 40 having a ring shape, which is installed at a boundary between the first horizontal end 16 and the central end 18, wherein the nut member 20 is connected to the connection member 10. When the screw is rotated to engage, the end of the first inclined end 14 of the connection member 10 is pressed tightly to the abrupt inclined end 34 of the bag member 30 to maintain the airtightness of the fluid A fitting apparatus for refrigerants is disclosed.

In this case, the inner circumferential surface of the connection member 10 may be formed to be symmetrical with respect to the left and right sides based on the center end 18.

In addition, the length of the first horizontal end 16 is preferably formed longer than the length of the central end (18).

The nut member 20 may include a body portion 20a having a nut screw portion 22 formed on an inner circumferential surface thereof, and an extension portion 20b extending from the body portion 20a in a hollow tube shape.

In this case, the length of the extension portion 20b is preferably formed longer than the length of the body portion 20a.

The connecting member, the nut member and the back ferrule member is a refrigerant fitting device, characterized in that made of aluminum.

Here, the outside of the connection member, the nut member, and the back ferrule member may be plated.

The sheet may be made of a polymer resin, and specifically, may be made of teflon or rubber.

Since the welding work is not required when connecting the refrigerant pipe and the pipe, the time required for the pipe fitting can be saved, and the loss of the pipe that can occur during the welding work can be prevented. The fitting can be effectively performed, and the cost of pipe fitting can be saved.

In addition, there is an effect that the airtightness of the refrigerant is perfectly maintained due to the material and the configuration of the present invention during the fitting part leakage test for checking whether the refrigerant, which is a fluid passing through the fitting device connecting pipes, is leaked.

In addition, by plating the outside of the fitting device for a refrigerant made of aluminum, corrosion can be prevented, and the surface hardness is improved. In particular, by welding the conventional bonding site it is possible to solve the problem of corrosion well due to oxidation of the welding site.

And since the end length of the nut member is longer, and the sheet is provided deeper into the center portion of the connecting member, the leaking test of the fitting device for the refrigerant to which the pipe is coupled has an effect of not leaking the refrigerant.

1 is an exploded perspective view of a refrigerant fitting device according to a first embodiment of the present invention.

2 is a cross-sectional view of the connection member of FIG. 1.

3 is a cross-sectional view of the back ferrule member of FIG.

4 is a cross-sectional view of the refrigerant fitting device according to the first embodiment of the present invention.

5 is a cross-sectional view in which the back ferrule member and the connection member of FIG. 1 are combined.

6 is an exploded perspective view of a refrigerant fitting device according to a second embodiment of the present invention.

7 is a cross-sectional view of the connecting member of FIG. 6.

8 is a cross-sectional view of the refrigerant fitting device according to the second embodiment of the present invention is combined.

100, 200; Refrigerant fittings

10, 210; Connecting

members

12 and 212; Connection thread part

14, 214; First

inclined ends

16, 216; First horizontal stage

18, 218;

Central stage

20, 220; Nut member

22, 222;

Nut thread

30, 230; Back Ferrule

32, 232; Second

horizontal stage

34, 234; A steep slope

36, 236;

Slow slope

40, 240; Seat

Hereinafter, a refrigerant fitting device according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

First embodiment

1 is an exploded perspective view of a refrigerant fitting device according to a first embodiment of the present invention. 2 is a cross-sectional view of the connecting member of FIG. 1, and FIG. 3 is a cross-sectional view of the back ferrule member of FIG. 1. 4 is a cross-sectional view in which the fitting device for the refrigerant according to the first embodiment of the present invention is coupled, and FIG. 5 is a cross-sectional view in which the back ferrule member and the connection member of FIG. 1 are coupled.

1 to 5, the refrigerant fitting device 100 according to the present embodiment includes a connection member 10, a nut member 20, a back ferrule member 30, and a seat 40. .

The connecting member 10, the nut member 20, the back ferrule member 30, and the sheet 40 are all formed to penetrate therein so as to accommodate a pipe such as a pipe. In the present specification, the outer side means both side end portions of the connection member and the like, and the inner side means the center side of the penetrated interior. In addition, the front-rear direction shall mean the longitudinal direction of components, such as a connection member, ie, the direction through which a fluid flows. In addition, the central direction means a direction toward a center point that is half of the length in each component of the connection member 10 or the like.

The connecting member 10 has an inner diameter penetrated entirely so that fluid can flow therein. The connection member 10 has a connection screw portion 12 formed with a thread on the outer periphery of both ends. The connection member 10 includes a first inclined end 14, a first horizontal end 16, and a central end 18 on an inner diameter portion, that is, an inner circumferential surface thereof. Here, the shape of the inner circumferential surface of the connecting member 10 may be configured to be symmetrical left and right. That is, the first inclined end 14 and the first horizontal end 16 are provided symmetrically on the left and right sides with respect to the center of the center end 18, respectively. However, in some cases, the diameter of the pipe 3 coupled to both side ends of the connection member 10 may be different, so the connection member 10 is not necessarily symmetrical.

The first inclined end 14 is a portion whose inner diameter gradually decreases from one end and the other end to the inner diameter of the connecting member 10 toward the central portion, and the first horizontal end 16 is the first inclined end 14. The middle end 18 is a portion extending from the end of the first horizontal end 16, but having a diameter smaller than the diameter of the first horizontal end (16). That is, the first inclined end 14 is formed to be inclined in the shape of the outer light inner narrow from both end portions of the connecting member 10 toward the inner central direction, and the first horizontal end 16 is the first inclined end 14. Is formed to extend in the flat, the central end 18 is formed to extend from the first horizontal end 16, it is formed so as to project than the inner peripheral surface of the first horizontal end (16). Therefore, a step (jaw) is formed at the boundary between the first horizontal end 16 and the central end 18, and the seat 40 is mounted thereon.

The nut member 20 penetrates back and forth so that the pipe 3 can be inserted into the inner diameter. The nut member 20 has a nut screw portion 22 having a thread formed on its inner circumference. The nut screw portion 22 of the nut member 20 is screwed to the connection screw portion 12 of the connection member 10, so that the nut member 20 is coupled to the connection member 10. The nut member 20 is provided in pair so as to couple to the outer periphery of the left and right sides of the connecting member 10, respectively. At this time, the nut member 20, as shown, may be composed of a body portion (20a) is formed with a nut screw 22 and an extension portion (20b) having a hollow tube shape as extending therefrom. In the present embodiment, the front and rear lengths of the extension part 20b are smaller than the front and rear lengths of the body part 20a.

The back ferrule member 30 penetrates back and forth so that the pipe 3 can be inserted into the inner diameter. The back ferrule member 30 is inserted into the inner diameter to contact the inner circumferential surface of the nut member 20 and is positioned between the connecting member 10 and the nut member 20. The outer periphery of the back ferrule member 30 is provided with a second horizontal end 32, a sharp inclined end 34, a gentle inclined end 36.

The second horizontal end 32 is a horizontally formed portion, and the sudden inclined end 34 extends from the second horizontal end 32 and is a portion whose outer diameter rapidly decreases toward the central portion of the connecting member 10. The gentle sloping end 36 extends from the end of the sudden sloping end 34 but gradually decreases in its outer diameter toward the central portion of the connecting member 10. That is, the gentle inclined end 36 extends from the sudden inclined end 34 to be inclined, but the inclination degree is smaller than the sudden inclined end 34 and the length of the inclined surface is larger.

The sheet 40 is a ring shape formed to penetrate the inner diameter. The seat 40 is provided between each first horizontal end 16 and the central end 18 of the connection member 10. That is, the sheet 40 is inserted from one end and the other end of the connecting member 10 is provided in the jaw portion between the first horizontal end 16 and the central end 18. As described below, the seat 40 is fitted to the refrigerant fitting device 100 according to the present embodiment and abuts against an end of the pipe 3 provided in the connection member 10. The sheet 40 may be made of a polymer resin such as Teflon, rubber, synthetic resin, or the like.

Due to the configuration as described above, the refrigerant fitting device 100 according to the present embodiment, when the nut member 20 and the connecting member 10 are mutually coupled, the first inclined end 14 of the connecting member 10 The end of the) is in close contact with the sudden inclined end 34 of the back ferrule member 30 can be kept airtight. In particular, the end of the first inclined end 14 of the connecting member 10 is in close contact with the steep inclined end 34 of the back ferrule member 30, the tightness can be maintained more firmly. When the pipe 3 is coupled, the end of the pipe 3 is brought into contact with the seat 40 provided between the first horizontal end 16 and the central end 18 of the connecting member 10, thereby ensuring airtightness. Can be maintained.

Here, the back ferrule member 30 may be provided with a relatively weak rigidity compared to the nut member 20 and the connecting member 10. As a result, the end of the first inclined end 14 of the connecting member 10 penetrates into the steep inclined end 34 of the back ferrule member 30 so that the airtightness can be maintained more firmly.

In this embodiment, the connection member 10, the nut member 20, and the back ferrule member 30 may be made of aluminum. The outside of the connection member 10, the nut member 20, and the back ferrule member 30 may be plated. Due to this plating treatment, corrosion of aluminum is prevented, and the surface hardness of the fitting device 100 for a refrigerant according to the present embodiment can be improved.

Refrigerant fitting device 100 according to the present embodiment having the configuration as described above is used as follows.

First, the nut member 20 is fitted to either side of the pipe 3. Here, the back ferrule member 30 is located inside the nut member 20, and the seat 40 is disposed at the inner diameter of the connecting member 10, that is, the jaw portion between the first horizontal end 16 and the central end 18. ) Is located.

Subsequently, the end of the pipe 3 is inserted into the inner diameter of the connecting member 10, and the end of the pipe 3 enters the end of the first horizontal end 16, that is, the seat 40.

The other pipe 3 is also joined in the above order.

Subsequently, when the nut member 20 is rotated, the nut screw portion 22 of the nut member 20 and the connecting screw portion 12 of the connecting member 10 are screwed together, and the nut member 20 and the connecting member 10 are screwed together. Is moved in the direction of close contact.

Accordingly, the back ferrule member 30 is also moved in the direction in which the connecting member 10 is positioned, and the end of the first inclined end 14 of the connecting member 10 is suddenly inclined ( Close to 34). At this time, the first inclined end 14 of the connecting member 10 is brought into close contact with the steep inclined end 34 of the back ferrule member 30 so that each pipe 3 is brought into contact with each sheet 40. Close contact. Therefore, airtightness to prevent the leakage of the refrigerant is more firmly guaranteed.

As described above, the refrigerant fitting device 100 according to the present embodiment can efficiently and easily perform fitting between pipes in a short time where necessary without welding.

In addition, when the test for checking whether the refrigerant leaks is performed by using the refrigerant fitting device 100 according to the present embodiment in which the pipe 3 is coupled, the pipe 3 may be bent to be bent. Test whether the refrigerant is leaking. In other words, the worst case is to test whether the refrigerant leaks. However, even in this case, there is an effect that the refrigerant does not leak to the bent portion.

Second embodiment

The fitting device for refrigerant according to the present embodiment is similar to the invention according to the first embodiment described above, but the length of the extension of the nut member engaged with the connecting member is longer than that of the first embodiment, and the sheet is the central portion of the connecting member. It is characterized by being provided more deeply. In this embodiment, descriptions of portions similar or identical to those of the first embodiment will be omitted.

6 is an exploded perspective view of a refrigerant fitting device according to a second embodiment of the present invention. 7 is a cross-sectional view of the connection member of FIG. 6, and FIG. 8 is a cross-sectional view of the refrigerant fitting device according to the second embodiment of the present invention.

6 to 8, the refrigerant fitting device 200 according to the present exemplary embodiment includes a connection member 210, a nut member 220, a back ferrule member 230, and a seat 240.

The connection member 210 has a connection screw portion 212 formed with a thread on the outer periphery of both ends. The connecting member 210 is provided with a first inclined end 214, a first horizontal end 216, and a central end 218 on an inner circumferential surface thereof.

The length of the first horizontal end 216 of the connecting member 210 is longer than the length of the central end 218. The first horizontal end 16 of the connecting member 10 in the above-described first embodiment is shorter than the length of the central end 18, but in this embodiment, the first horizontal end 216 is the center end 218. Is longer than). Due to this structure, as will be described later, the sheet 240 is formed deeper into the center portion of the connecting member 210 than in the first embodiment.

The nut member 220 has a nut screw portion 222 having a thread formed on its inner circumference. The nut screw portion 222 of the nut member 220 is screwed to the connection screw portion 212 of the connection member 210, the nut member 220 is coupled to the connection member 210. The nut member 220 is composed of a body portion 220a in which the nut screw portion 222 is formed and a hollow tube-shaped extension portion 220b extending therefrom. In this embodiment, the length of the extension portion 220b is It is formed longer than the length of the body portion (220a).

The seat 240 has a ring shape and is provided at a stepped portion between each first horizontal end 216 and the center end 218 of the connection member 10. That is, the seat 240 is inserted from one end and the other end of the connecting member 210 is provided in the jaw portion between the first horizontal end 216 and the central end 218. Due to the shape of the connection member 10 as described above, the seat 240 is provided deeper in the central portion inside the connection member 10 than in the first embodiment.

Due to the configuration as described above, the refrigerant fitting device 200 according to the present embodiment has the first inclined end 214 of the connecting member 210 when the nut member 220 and the connecting member 210 are coupled to each other. End) may be kept in close contact with the steep inclined end 234 of the back ferrule member 230. In particular, the end of the first inclined end 214 of the connecting member 210 is in close contact with the steep inclined end 234 of the back ferrule member 230, the tightness can be maintained more firmly. When the pipe 3 is coupled, the end of the pipe 3 comes into contact with the seat 240 provided between the first horizontal end 216 and the center end 218 of the connecting member 210, thereby ensuring airtightness. Can be maintained.

And the length of the extension 220b of the nut member 220 coupled with the connecting member 210 is longer than that in the first embodiment, and the sheet 240 is deeper into the central portion of the connecting member 210. Due to this, even when the pipe 3 is bent, the leakage test of the refrigerant fitting device 200 according to the present embodiment, in which the pipe 3 is coupled, does not cause any problems such as leakage of the refrigerant into the bent portion. .

On the other hand, the refrigerant fitting device according to the present embodiment is not limited to the above-described form, it can be variously modified within the scope not departing from the technical spirit of the present invention. This will be readily apparent to those skilled in the art.

The present invention relates to a refrigerant fitting device used for the refrigerant pipe connection of a domestic or industrial refrigeration cycle, and from the conventional welding and joining of the refrigerant pipe, it is possible to complete the construction or maintenance of the refrigerant pipe with a simple operation. It is possible. Therefore, it may be applied to various fields such as an air conditioner or a central air conditioner in a factory building in each home. In particular, it is very economical to install or replace air conditioners in each home, and it is very economical, and industrial usefulness is very great.

Claims

The first inclined end 14 through which the inside penetrates back and forth so that the fluid flows, and connecting threaded portions 12 are formed on the outer circumferential surfaces of both side ends, respectively, and are formed to be inclined in the shape of the outer light inner narrow at both inner ends of the inner circumferential surface. The first horizontal end 16 extending from the first inclined end 14 and the central end extending from the first horizontal end 16 to have an inner diameter smaller than the inner diameter of the first horizontal end 16. A connecting member 10 having an 18;

A pair of nut members 20 having an inside penetrating back and forth and having a nut screw portion 22 formed on an inner circumferential surface for screwing to the connection screw portion 12;

A second horizontal end 32 is formed between the connecting member 10 and the nut member 20 and inserted into the nut member 20, and is horizontally formed on an outer circumferential surface thereof. Has a steep inclined end 34 is formed to be inclined to extend from the horizontal end 32, the gentle inclined end 36 is formed to extend from the sudden inclined end 34 so that the inclination is more gentle than the sudden inclined end 34 A back ferrule member 30; And

A seat 40 having a ring shape and installed at a boundary between the first horizontal end 16 and the central end 18;

Including but not limited to

When screwing the nut member 20 to the connecting member 10 by screwing, the end of the first inclined end 14 of the connecting member 10 is the abrupt inclination of the bag member 30 Refrigerant fitting device characterized in that the airtightness of the fluid is maintained while being in close contact with the end (34).
The method of claim 1,

The inner peripheral surface shape of the connecting member 10 is a refrigerant fitting device, characterized in that the left and right are formed to be symmetrical with respect to the central end (18).
The method of claim 1,

Refrigerant fittings, characterized in that the length of the first horizontal end (16) is formed longer than the length of the central end (18).
The method of claim 1,

The nut member 20 comprises a body portion 20a having a nut screw portion 22 formed on an inner circumferential surface thereof, and an extension portion 20b formed to extend in a hollow tube shape from the body portion 20a. Fitting device for
The method of claim 4, wherein

Refrigerant fitting device, characterized in that the length of the extension portion (20b) is formed longer than the length of the body portion (20a).
The method according to any one of claims 1 to 5,

The connecting member, the nut member and the back ferrule member is a refrigerant fitting device, characterized in that made of aluminum.
The method according to any one of claims 1 to 5,

Refrigerant fitting device, characterized in that the outside of the connecting member, the nut member and the back ferrule member is plated.
The method according to any one of claims 1 to 5,

Refrigerant fitting device, characterized in that the sheet is made of a polymer resin.
The method of claim 8,

The sheet is a fitting device for a refrigerant, characterized in that made of Teflon or rubber.