KR101230338B1 - Combination device for cooling and heating pipe - Google Patents

Abstract

PURPOSE: A connection device for air-conditioning pipe tightening is provided to prevent refrigerant gas from being leaked by opening an internal path only when a joining part of two connection devices is sealed. CONSTITUTION: A connection device for air-conditioning pipe tightening comprises first and second connection caps(20a,20b), first and second supporting tubes, first and second switching bars, a fixed socket(50), a socket(60), and engage nuts(70). On the internal circumference of the fixed socket in which fluid path is shrunk in multiple steps, internal fluid path is controlled by sealing or separation of a first open and close rod shaped disk protrusion part. On the outer circumference of the other fixed socket end, protrusions are formed. On the other crossed section, joining projections which are protruded in pipe form are formed. On the internal circumference of the engage socket in which fluid path is shrunk in multiple steps, internal fluid path is controlled by sealing or separation of a first open and close rod shaped disk protrusion part. On the outer circumference of the other engage socket end, screw threads are formed. On the other crossed section, joining grooves are formed.

Description

Connecting device for fastening heating and heating pipes {Combination Device for Cooling and Heating Pipe}

The present invention relates to a connection device for fastening a heating and cooling pipe, and more particularly, is installed at a connection part of an air-conditioning pipe composed of a drawing pipe drawn out from an indoor unit and an outdoor unit, and an extension pipe connecting the two drawing pipes. The present invention relates to a connection device for fastening a heating / cooling tube to be installed without being limited in distance.

In general, the connection device provided in the cooling and heating fastening system is to connect the copper pipe provided between the indoor unit and the outdoor unit with each other to provide a space for the refrigerant gas or the heat transport medium to pass through.

10 is a view showing a conventional cooling and heating fastening system, Figure 11 is a view showing a connection device provided in a conventional cooling and heating fastening system.

The connection device provided in the conventional cooling and heating fastening system is an indoor unit (1) having a drawing pipe (2) on one side, a connecting means (3) connected to the drawing pipe, and the refrigerant fastened to the connecting means It is characterized in that it consists of an outdoor unit (5) comprising a tube (extension tube) (4), and a drawing tube (2) connected to the connecting means (3) on the other side of the refrigerant tube (hose).

And the connecting means (3) is coupled to the outer diameter of the refrigerant pipe (hose) (4) includes a fastener (6) formed with a male screw portion around, and a female screw portion is formed to be fastened to the male screw portion and includes an assembly provided at the bottom It consists of a fastener 7 and a rubber tube 8 inserted into the space formed in the inner diameter of the fastener.

However, the conventional air conditioner connection device configured as described above has a problem in that the indoor unit and the outdoor unit must be installed according to the limited length of the refrigerant pipe. In addition, there is a problem that the refrigerant gas leaks between the gap when the connecting means is fixed to the refrigerant pipe for a long time use.

In this connection device for fastening heating and cooling tubes according to the present invention,

It is an object of the present invention to provide a connecting device that can be installed regardless of the location and distance by connecting the drawer and extension tube, which is a component of the heating and heating tube, to extend the length.

In addition, the connecting device that can prevent the leakage of refrigerant gas by opening the internal flow path only when the coupling portion of the two connecting devices are respectively constructed by opening and closing rods in the two connecting devices coupled to the ends of the outlet pipe and the extension pipe, respectively. The provision of is for other purposes.

Connection device for fastening heating and cooling tubes of the present invention for solving the above problems,

In the connecting device for fastening the heating and cooling pipes installed at the connection portion of the air-conditioning pipe composed of the outlet pipe drawn from the indoor unit and the outdoor unit and the extension pipe connecting the two outlet pipes, the ends of the outlet pipes respectively drawn from the indoor unit and the outdoor unit side; First and second connection caps which are pipes coupled to end portions of the extension pipes coupled thereto; A plurality of flow path grooves are formed in the axial direction on the outer circumferential surface of the first and second connection caps so as to allow gas to pass therethrough, and a hollow part having only one side opened in the inner axial direction is formed, and the closed part is closed at the hollow part. First and second support tubes having springs built into the side; First and second opening and closing rods having one end slidably inserted into the first and second support pipes so that elastic repulsion is made by a spring, and a disc protrusion having a packing installed in the middle thereof is formed; One end is a tube that is screwed into the first connection cap by inserting the first opening and closing rod, the inner circumferential surface is reduced in the multi-stage so that the inner flow path is interrupted by close contact or separation with the first opening and closing disc disc protrusion. A fixing socket formed on the outer circumferential surface of the other end, and having a coupling protrusion protruding in a tubular shape on the other end surface; One end is a tube that is screwed into the second connection cap by inserting the second opening and closing rod, the inner circumferential surface of the flow path is reduced in multiple stages so that the inner flow path is interrupted by close contact or separation with the disc protrusion of the second opening and closing rod. A fastening socket formed with a screw thread on an outer circumferential surface of the other end, and having a coupling groove formed on the other end surface to insert a coupling protrusion of the fixed socket; And a fastening nut for engaging the fastening socket and the fastening socket by engaging with the outer circumferential surface thread of the fastening socket by inserting the fastening socket.

Connection device for fastening heating and cooling tubes of the present invention by the above solution means,

By extending the length of the drawer tube and the extension tube, which is a component of the heating and cooling tube, the length can be extended so that the indoor unit and the outdoor unit can be installed regardless of the location and distance.

In addition, inside the connecting device coupled to the ends of the outlet pipe and the extension pipe, the opening and closing rods are respectively constructed so that the internal flow path is opened only when the coupling part of the two connecting devices is sealed with the outside, thereby preventing the leakage of refrigerant gas. There is.

1 and 2 are a perspective view of the coupled and disassembled state of the air conditioning tube fastening connection device according to the invention.
3 and 4 are cross-sectional views of the coupled and disassembled state.
5 to 8 is a partially cutaway perspective view showing the main part according to the present invention.
9a and 9b are cross-sectional views showing the operating state of the connecting device according to the invention.
10 is a schematic view showing a conventional heating and cooling system and connecting device.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the appended drawings illustrate only the contents and scope of technology of the present invention, and the technical scope of the present invention is not limited thereto. In addition, it will be apparent to those skilled in the art that various modifications and changes can be made within the scope of the present invention based on these examples.

1 and 2 are a perspective view of the coupled and disassembled state of the air conditioning tube fastening connection device according to the present invention, Figure 3 and Figure 4 is a cross-sectional view of the coupled and disassembled state.

As described, the connecting device 10 of the present invention is fixed to the one end of the two ends connected to each other by connecting the two extension pipes and the extension tube connecting the outlet pipes respectively drawn from the indoor unit and the outdoor unit side (11) To combine, and the other end is coupled to the coupling coupling body 12 to be made by the combination of the two couplings. The fixed assembly 11 is composed of a first connecting cap 20a, a first support tube 30a, a first opening and closing rod 40a, and a fixing socket 50, and the fastening assembly 12 is connected to a second connection. Cap 20b, the second support pipe 30b, the second opening and closing rod 40b and the fastening socket 60, the fixed coupling member and the fastening coupling member is coupled by a fastening nut (70).

The first and second connection caps 20a and b face each other at ends of the lead-out pipe and the extension pipe, which are connected by connecting two lead-out pipes drawn from the indoor unit and the outdoor unit, respectively, and an extension pipe connecting the lead-out pipe to each other. It is a body that becomes.

The first and second connection caps 20a and b are tubular bodies in which flow paths are formed to allow refrigerant gas to flow therein, as shown in FIGS. 1 to 5, and one end of the first and second connecting caps 20a and b is screwed with an outlet pipe or an extension tube. Or a thread is formed on the outer circumferential surface, the other side is configured to further expand the diameter to secure a space for injecting the first, second support pipe (30a, b) inward. The end portion of which the diameter is expanded is formed with a screw thread on the outer circumferential surface to be screwed with one end of the fixed socket 50 or the fastening socket 60 to be described later.

Here, the outer surfaces of the first and second connection caps 20a and b may increase the diameter of the end side into which the first and second support tubes are inserted, rather than the end diameters of the first and second connection caps, as shown in FIG. It may be minimized or formed into a cylinder having the same outer surface, and only one side section of the inner flow path may be expanded to secure a space for incorporating the first and second support tubes. In addition, it is possible to provide a constant installation position by limiting the insertion depth of the first and second support tubes to be inserted by forming a step in the inner passage.

Next, the first and second support pipes 30a and b are inserted into the first and second connection caps 20a and b, and a plurality of flow path grooves 31 are formed in the circumferential direction on the outer circumferential surface thereof so that gas passes therethrough. It is formed, and the hollow portion 32 which is opened only one side in the inner axial direction is formed, the spring 33 is impregnated to the closed end side.

These first and second support pipes 30a and b are cylinders having only one side opened to introduce the spring 33 and to insert a part of the first and second opening and closing rods as shown in FIGS. 1 to 4 and 6. A plurality of flow path grooves 31 are formed on the outer circumferential surface to allow the refrigerant gas to flow in or out through the first and second connection caps. The flow path grooves 31 formed on the outer circumferential surface thereof are preferably formed at right angles with respect to the axis so as to allow the refrigerant gas to pass evenly, and a plurality of flow path grooves are formed in addition to the four flow path grooves shown. The flow path can be formed in various ways such as shapes.

In addition, the first and second support pipes 30a and b may be formed with the interview groove 34 recessed in a predetermined depth at an end portion at which the hollow part 32 is opened. The end of the interview groove 34 may be formed in the same shape as the contact surface with the first and second opening and closing rods into the hollow portion so that the two members may be positioned on the same axis while increasing the contact area.

In addition, a through hole 35 may be further formed at the closed end of the first and second support pipes. The spring 33 placed in the hollow portion is for pushing the first and second opening and closing rods 40a and b into the hollow portion to one side. Therefore, when the through hole 35 is formed, the flowing refrigerant gas is introduced to pressurize the first and second opening and closing rods, thereby increasing the pressing force more than pressurizing the spring alone, thereby increasing the flow rate intermittent force.

The first and second opening and closing rods 40a and b are rods having one end slidably inserted into the first and second support pipes 30a and b as shown in FIGS. 1 to 4 and 7. The first and second opening and closing rods 40a and b are pushed by the elastic repulsive force of the spring 33 to the end of the first and second opening and closing rods 40a and b, so that the other ends thereof are not in contact with the spring. Press force to act.

The first and second opening and closing rods are formed in the middle portion of the disc protrusion (41) to limit the extent to which the opening and closing rods are inserted into the first and second support tube hollow portion, and to facilitate the opening and closing of the flow path of the fixed socket or fastening socket. The disc protrusions 41 of the first and second opening and closing rods are provided with a packing 42 in a direction opposite to an inner surface of the protruding one side, that is, the fixed socket 50 or the fastening socket 60, and thus the inner surface of the fixed socket or the fastening socket. Block the flow path when in contact with the product.

In addition, the disc protrusion 41 is formed in a truncated conical shape that gradually expands or contracts in diameter so that the axis of each part is automatically on the same axis by the inclined surface when contacted with the first and second support tubes or the fixed socket or the fastening socket. It is desirable to be located at.

In this case, the packing 42 may be partially protruded to the outside of the inclined surface to improve the sealing property by making the packing contact first when contacting the inner surface of the fixed socket or the fastening socket.

In addition, the first and second opening and closing rods (40a, b) is one end is interviewed with each other when the connection means. Therefore, the conical protrusion 43 is formed at the end of the first opening and closing rod 40a to be interviewed, and the conical groove 44 is formed at the end of the second opening and closing rod 40b so that the first and second opening and closing bars are coaxially formed. You can have an interview at.

Next, the fixed socket 50 is a pipe body of which one end is screwed into the first connection cap 20a by introducing the first opening and closing rod 40a, and the first opening and closing disc on the inner circumferential surface of which the flow path is reduced in multiple stages. Interruption of the inner flow path is made by close contact with or spaced from the protrusion 41, and a locking projection 52 is formed on the outer circumferential surface of the other end, and a coupling protrusion 51 protruding in the tubular shape is formed on the other end surface. .

The fixing socket 50 is formed with a screw thread formed on the inner circumferential surface of one end as shown in FIGS. 1 to 4 and 8 to be coupled to the screw thread formed on the outer circumferential surface of the first connection cap 20a, and at the threaded portion. In the other end direction of the inner circumferential surface, the flow path is reduced in multiple stages. A portion of the passage that is reduced in the multi-stage may be formed in a truncated conical shape of the truncated cone to facilitate contact with the disc protrusion 41 of the first opening and closing rod. The coupling protrusion 51 protruding from the other end of the fixed socket is formed to correspond to the diameter of the coupling groove 61 of the coupling socket 60. In addition, the engaging projection 52 is formed on the outer side of the end of the start of the protrusion of the engaging projection to form a hooking jaw 52 in an annular shape so as to be caught by the fastening nut 70 to be described later.

On the other hand, the fastening socket 60 is a tubular body in which one end is screwed into the second connection cap 20b by introducing the second opening and closing rod 40b, and a second opening and closing disc disc protrusion on the inner circumferential surface of which the flow path is reduced in multiple stages. Coupling groove portion 61 to be intermittent to the inner flow path by close contact with the (41), to form a screw thread on the outer peripheral surface of the other end, and to insert the engaging projection (51) of the fixed socket 50 on the other end surface ) Is formed.

The inner circumferential surface of the fastening socket 60 is made to reduce the thread and the multi-stage flow path in the same way as the inner circumferential surface of the fixed socket. However, the fastening socket has a coupling groove 61 corresponding to the coupling protrusion of the fixed socket at the end thereof to allow the coupling protrusion to be inserted during the fastening socket.

In addition, the fastening socket has a screw thread formed on the outer circumferential surface of the fastening socket instead of the fastening socket so that the fastening socket is coupled with the fastening nut containing the fastening socket of the fastening socket.

In addition, the fastening socket forms an annular packing insertion groove 62 along the inner circumferential surface of the coupling groove 61 to insert the packing 63 into the packing insertion groove to seal between the fastening socket and the fixed socket when the fixed socket is coupled. can do. At this time, the installation position of the packing 63 is located between the end portion of the end of the conical groove 44 is formed between the ends of the second opening and closing rod 40b when the inner flow path is closed, and between the end of the fastening socket coupled to the fixed socket It is preferable to open the fastening socket and the fixed socket inner passage only when the connection between the fastening socket and the fixed socket is sealed.

The fastening nut 70 has a cross section in the form of a and a thread is formed on the inner circumferential surface. The fastening nut couples the fixed socket and the fastening socket by engaging the thread of the outer circumferential surface of the fastening socket in the state in which the locking jaw 52 is inserted by inserting the fastening socket.

As described above, the connecting device 10 according to the present invention mounts the fixed coupling body 11 at one end of both ends of the tube to be connected as shown in FIGS. 9A and 9B, and mounts the coupling body 12 at the other side. Insert the coupling protrusion 51 of the fixed socket 50 into the coupling groove 61 of the fastening socket 60, and then use the fastening nut 70 to connect the tubular connection.

The fixed coupling body 11 includes a first connection cap 20a coupled to one end of the tube to be connected, a first support tube 30a disposed inside the first connection cap, and the first support tube. Consists of the first opening and closing rod (40a) that is slidably inserted into the hollow portion 32 of the hollow portion 32, and the fixing socket 50 is screwed to the first connection cap containing the first support tube and the first opening and closing rod do.

The fastening coupling body 12 has a second connection cap 20b coupled to one side end of the tube to be connected, a second support tube 30b placed inside the second connection cap, and the second support tube. A second opening and closing rod 40b which is slidably inserted into the hollow portion of the hollow portion includes the second support pipe and the fastening socket 60 which is screwed to the second connection cap by enclosing the second opening and closing rod.

Before the fixed coupling member and the fastening assembly are coupled, the packing 42 installed on one side of the disc protrusions 41 or disc protrusions of the first and second opening and closing rods 40a and b is fixed socket 50 and the fastening socket 60. The inner channel is blocked in contact with the inner surface, but the fixed socket 50 of the fixed assembly is coupled to the fastening socket 60 of the fastening assembly, that is, the coupling protrusion 51 of the fixed socket is coupled to the coupling groove 61 of the fastening socket. When inserted into, the fixed socket and the passage in the fastening socket overlap.

Accordingly, the first and second opening and closing rods 40a and b positioned in the respective flow paths are in contact with each other and are pushed to each other so that the first and second opening and closing rods 40a and b are pushed to each other in the opposite axial direction with respect to the joint surface in the fixed socket 50 or the fastening socket 60. It is pushed out. The first and second opening and closing rods 40a and b that are pushed out are axially moved while compressing the springs 33 installed in the hollow portions of the first and second support tubes 30a and b, respectively. The disc protrusion 41 of the opening / closing rod is spaced apart from the inner surface of the fixed socket and the fastening socket, so that the internal flow path is communicated to allow the flow of the refrigerant gas.

At this time, the end of the coupling protrusion 51 of the fixed socket inserted into the coupling groove 61 is spaced apart from the inner surface of the fixing socket and the locking socket that the disc protrusions 41 of the first and second opening and closing rods 40a and b have interviewed. Before passing through the packing 63 mounted in the packing insertion groove of the inner peripheral surface of the coupling groove. This is to seal the spaced gap between the fixed socket 50 and the fastening socket 60 before the internal flow path communication by the first and second opening and closing rods (40a, b).

In addition, the positions where the end portions of the first and second opening and closing rods 40a and b are interviewed are preferably positioned at the centers of two points where the two disc protrusions, the fixed socket, and the fastening socket are in contact, so that both sides thereof are symmetrical.

In addition, the inner flow passage cross-sectional area of the connection device is preferably formed to be 1.2 to 2 times the size of the cross-sectional area of the lead-out pipe coupled to the connection device. This is because the flow path is formed to be bent in the connection device because the displacement of the refrigerant gas is uneven, the discharge may be uneven, so that the flow path in the connection device is formed larger than the cross-sectional area of the lead pipe to maintain a constant discharge. However, when the cross-sectional area of the flow path in the connecting device becomes larger than 2 times, there is a disadvantage in that only the device volume increases without increasing the effect.

Separating the connected fixed coupling body 11 and the fastening coupling body 12 is achieved by loosening the fastening nut 70 and separating the fixed socket and the fastening socket. Here, when the engaging protrusion 51 of the fixed socket is removed from the coupling groove 61 of the fastening socket, the internal overlapping flow paths of the fixed socket and the fastening socket are separately separated, so that the flow path is lengthened, and the first and second opening and closing rods are pushed out. 40a and b are returned to their original positions by the spring 33 of the first and second support tubes 30a and b and the pressure of the internal refrigerant gas introduced through the through hole 35 of the support tube. One surface of the disc protrusions (or packings) of the first and second opening and closing rods may be in contact with the inner surfaces of the fixed socket and the fastening socket to close the internal flow path and prevent leakage of the refrigerant gas.

10: connecting device
11: fixed assembly 12: fastener
20a, b: First and second connection cap
30a, b: 1st, 2nd support pipe
31: euro groove 32: hollow part
33: spring 34: interview groove
35: Through hole
40a, b: first and second opening and closing rod
41: disk protrusion 42: packing
43: conical projection 44: conical groove
50: fixed socket
51: engaging projection 52: locking jaw
60: tightening socket
61: coupling groove 62: packing insertion groove
63: Packing
70: tightening nut

Claims (5)

In the connecting device for fastening the heating and cooling pipes installed in the connection portion of the air-conditioning pipe consisting of the withdrawal pipe drawn from the indoor unit and the outdoor unit and the extension pipe connecting the two withdrawal pipe,
First and second connection caps 20a and b which are pipes coupled to an end of the outlet pipe drawn out from the indoor unit and the outdoor unit, respectively, and an end of the extension pipe coupled thereto;
A plurality of flow path grooves 31 are formed in the axial direction on the outer circumferential surface of the first and second connection caps so as to allow gas to pass therethrough, and a hollow portion 32 having only one side opening in the inner axial direction is formed, The hollow portion includes first and second support tubes (30a, b) in which the spring 33 is built into the closed end side;
First and second opening and closing rods 40a having one end slidably inserted into the first and second support pipes to allow elastic repulsion to be formed by a spring, and a disc protrusion 41 having a packing 42 in the middle thereof is formed. b);
One end is a tube that is screwed into the first connection cap 20a by inserting the first opening and closing rod 40a, the inner circumferential surface is reduced in multiple stages in close contact or spaced apart from the first opening and closing disc disc protrusion 41 A fixing socket 50 having a locking projection 52 formed on the outer circumferential surface of the other end, and engaging projections 51 protruding in a tubular shape on the other end surface thereof;
One end is a tube that is screwed into the second connecting cap (20b) by inserting the second opening and closing rod (40b), in close contact or spaced with the second opening and closing disc disc protrusion 41 on the inner circumferential surface reduced in the multi-stage. A fastening socket (60) having a coupling groove (61) formed therein so as to control the internal flow path, a screw thread formed at an outer circumferential surface of the other end portion, and an engaging protrusion (61) inserted at the other end surface;
And a fastening nut (70) for engaging the fixed socket and the fastening socket by engaging the fixed socket with the thread of the outer circumferential surface of the fastening socket to insert the fastening socket. The method of claim 1,
The first and second support pipes 30a and b form through-holes 35 at closed ends inserted into the first and second connection caps 20a and b to allow the refrigerant gas to flow through the flow path. 2 is connected to the hollow portion 32 of the support tube for connecting the cooling and heating pipe fastening, characterized in that to press the first and second opening and closing rod in the axial direction. The method of claim 1,
When the fixed socket 50 and the fastening socket 60 are coupled, the opposite ends of the first opening and closing rod 40a and the second opening and closing rod 40b are interviewed with each other, and the first and second opening and closing are closed by spring 33 consolidation. Connection device for fastening heating and heating pipes, characterized in that the flow path is opened by moving in the axial direction on the internal passage of the fixed socket and the fastening socket fixed rod. The method of claim 3,
Conical projections 43 are formed at the end portions of the first opening and closing rods 40a, and conical groove portions 44 are formed at the end portions of the second opening and closing rods 40b. Connecting device for fastening heating and cooling pipes, characterized in that so as to. The method of claim 3,
An annular packing inserting groove 62 is formed along the inner circumferential surface of the engaging socket portion 61 of the fastening socket 60 to insert the packing 63 into the packing inserting groove to seal between the fastening socket and the fixed socket when the fixed socket is coupled. But let's
The installation position of the packing 63 is located between the end portion of the end of the second opening and closing the end of the conical groove formed in the opening, and the end of the fastening socket coupled to the fixed socket is sealed between the fastening socket and the fixed socket Connection device for fastening heating and heating pipes, characterized in that only when the fastening socket and the fixed socket inner passage is opened.

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