CN210014105U - Connecting pipe and air conditioner - Google Patents

Abstract

The utility model belongs to the nest of tubes connects the field, discloses a connecting pipe and air conditioner, and the connecting pipe includes interconnect's first pipe and second pipe, and the pipe diameter of first pipe is greater than the pipe diameter of second pipe, first pipe with the pipe wall of second pipe all sets up the chamber that holds that is used for installing the sealing washer. The connecting pipe is including the first pipe and the second pipe of interconnect, wherein first pipe diameter is greater than the pipe diameter of second pipe, and set up the chamber that holds that is used for installing the sealing washer on first pipe and second pipe, holding intracavity installation sealing washer, and arrange the less nest of tubes of pipe diameter in with first pipe box, stretch into the great nest of tubes of pipe diameter with the second pipe, and like this, exert the fastening force to the surface of connecting pipe, make connecting pipe and nest of tubes produce interference fit, the sealing washer atress produces and warp, thereby realize sealing between the nest of tubes of connecting pipe and different pipe diameters, firm connection.

Description

Connecting pipe and air conditioner

Technical Field

The utility model relates to a nest of tubes connects technical field, in particular to connecting pipe and air conditioner.

Background

The connection between the pipe group and the pipe group can be realized through welding or threads, for example, the condenser air inlet pipe group and the air outlet pipe group are connected in a welding mode, and the machine connecting pipe group and the inner machine refrigerant inlet and outlet pipe group are connected in a threaded mode. The pipe groups can be connected with each other by arranging a connecting pipe between the two pipe groups. To the nest of tubes that two pipe diameters are different, the gap appears easily in the connected mode of screw thread and welding, and the leakproofness, the fastness of current connecting pipe and nest of tubes connected are not strong enough, can cause the leakage of medium in the nest of tubes. The problem of how to make a firm and sealed connection between the connecting tube and the tube set is to be solved.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a connecting pipe and air conditioner to realize sealed, firm connection between the nest of tubes of messenger's different pipe diameters. The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.

According to the utility model discloses the first aspect of the embodiment provides a connecting pipe for the connection of the butt joint end of two nest of tubes, the connecting pipe includes interconnect's first pipe and second pipe, the pipe diameter of first pipe is greater than the pipe diameter of second pipe, first pipe with the pipe wall of second pipe all sets up the chamber that holds that is used for installing the sealing washer.

In some optional embodiments of the present invention, a distance from the accommodating cavity of the first tube to a junction of the first tube and the second tube is d, and a length of the first tube is e, d ═ ke, k ═ 2/3 ~ 3/4.

In some optional embodiments of the present invention, the first pipe is adapted to be connected to one of the outer sleeves of the two pipe sets, the second pipe is adapted to be connected to the other of the inner sleeves of the two pipe sets, and a sealing ring with a D-shaped cross section is disposed in the accommodating cavity;

the outer ring of the sealing ring arranged on the first pipe is a D-shaped straight edge, and the inner ring of the sealing ring is a D-shaped arc edge; the outer ring of the sealing ring arranged on the second pipe is the D-shaped arc edge, and the inner ring of the sealing ring is the D-shaped straight edge.

In some optional embodiments of the present invention, the second tube comprises a cover for snapping into the abutting end of the tube set when the second tube is sleeved on the tube set.

In some optional embodiments of the present invention, the inner pipe walls of the first pipe and the second pipe are respectively provided with a retaining structure for preventing the pipe sets connected correspondingly to each other from separating.

In some optional embodiments of the present invention, the stopping structure comprises two positioning assemblies, each of the positioning assemblies comprises a plurality of protrusions arranged at intervals along the same circumferential direction of the connecting pipe.

In some optional embodiments of the present invention, the two positioning assemblies have the protrusion arranged in a staggered manner.

In some optional embodiments of the present invention, the thickness of the bump is gradually increased from the first tube to the second tube.

According to a second aspect of the present invention, there is provided an air conditioner comprising the connecting pipe of any one of the above-mentioned optional embodiments.

The embodiment of the utility model provides a technical scheme can include following beneficial effect:

the connecting pipe is including the first pipe and the second pipe of interconnect, wherein first pipe diameter is greater than the pipe diameter of second pipe, and set up the chamber that holds that is used for installing the sealing washer on first pipe and second pipe, holding intracavity installation sealing washer, and arrange the less nest of tubes of pipe diameter in with first pipe box, stretch into the great nest of tubes of pipe diameter with the second pipe, and like this, exert the fastening force to the surface of connecting pipe, make connecting pipe and nest of tubes produce interference fit, the sealing washer atress produces and warp, thereby realize sealing between the nest of tubes of connecting pipe and different pipe diameters, firm connection.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention as claimed.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is a schematic diagram illustrating the construction of a connecting tube according to an exemplary embodiment;

FIG. 2 is a schematic structural diagram illustrating a connecting tube according to another exemplary embodiment;

FIG. 3 is a schematic diagram illustrating the connection of a connector tube to a tubing set in accordance with an exemplary embodiment;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is an enlarged, fragmentary view of a connection tube and tube set connection shown in accordance with another exemplary embodiment;

FIG. 6 is a schematic diagram illustrating an internal structure of a connecting tube according to an exemplary embodiment;

FIG. 7 is a cross-sectional view of a connecting tube, sealing ring, shown in accordance with an exemplary embodiment;

FIG. 8 is a cross-sectional view of a connecting tube, sealing ring, shown in accordance with another exemplary embodiment;

fig. 9 is a schematic structural view illustrating a connection pipe according to another exemplary embodiment.

Wherein, 1, a first pipe; 2. a second tube; 31. an accommodating chamber; 32. a seal ring; 33. a positioning assembly; 34. a bump; 35. sealing the cover; 41. a first refrigerant pipe group; 42. a second refrigerant pipe group.

Detailed Description

The following description and the drawings sufficiently illustrate specific embodiments herein to enable those skilled in the art to practice them. Portions and features of some embodiments may be included in or substituted for those of others. The scope of the embodiments herein includes the full ambit of the claims, as well as all available equivalents of the claims. The terms "first," "second," and the like, herein are used solely to distinguish one element from another without requiring or implying any actual such relationship or order between such elements. In practice, a first element can also be referred to as a second element, and vice versa. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a structure, apparatus, or device that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such structure, apparatus, or device. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a structure, device or apparatus that comprises the element. The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like herein, as used herein, are defined as orientations and positional relationships based on the orientation or positional relationship shown in the drawings, and are used for convenience in describing and simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. In the description herein, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, and indirect connections via intermediary media, where the specific meaning of the terms is understood by those skilled in the art as appropriate.

Herein, the term "plurality" means two or more, unless otherwise specified.

Herein, the character "/" indicates that the preceding and following objects are in an "or" relationship. For example, A/B represents: a or B.

Herein, the term "and/or" is an associative relationship describing objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

As shown in figure 1, the connecting pipe is used for connecting butt ends of two pipe groups and comprises a first pipe 1 and a second pipe 2 which are connected with each other, the pipe diameter of the first pipe 1 is larger than that of the second pipe 2, and the pipe walls of the first pipe 1 and the second pipe 2 are provided with accommodating cavities 31 for installing sealing rings 32.

In actual use, the seal ring 32 is installed in the accommodating chamber 31, and then the butt ends of the two tube sets are connected by using the connection tube.

Alternatively, the accommodating cavity 31 is formed by the pipe wall of the connecting pipe protruding to the outside in the radial direction. Alternatively, the receiving cavity 31 is formed by a pipe wall of the connecting pipe protruding radially inward. In this way, the seal ring 32 can be mounted in the housing chamber 31.

In one embodiment, as shown in fig. 1, the accommodating cavity 31 of the first tube 1 is formed by protruding the tube wall of the connecting tube radially outwards, and the accommodating cavity 31 of the second tube 2 is formed by protruding the tube wall of the connecting tube radially inwards. The first tube 1 is located outside the tube set and the receiving chamber 31 takes the form of a radially outwardly projecting tube. As shown in fig. 4, the second tube 2 is located inside the tube group and the receiving chamber 31 is in the form of a radially inwardly projecting form, which facilitates the mounting of the sealing ring 32 on the connection tube without the need to change the structure of the tube group to accommodate the connection tube.

In an embodiment of the present invention, a sealing ring 32 is disposed in the accommodating chamber 31. Optionally, the seal ring hardness is between 40IRHD and 90 IRHD. The hardness is low, the sealing ring is convenient to install, but peeling, installation damage, extrusion and even pressure explosion easily occur; the hardness is higher, so the installation is inconvenient. Optionally, the sealing ring 32 and/or the inner wall of the receiving chamber 3 are coated with a sealing medium. The sealing medium may be mineral oil or the like. In this way, the sealing effect can be enhanced. Optionally, the material of the sealing ring 32 is abrasion-resistant, corrosion-resistant, temperature-resistant and weather-resistant rubber. Such as hydrogenated nitrile rubber HNBR.

In one embodiment of the present invention, as shown in fig. 3 and 4, the first pipe 1 is used for connecting with one of the outer sleeves of the two pipe sets, the second pipe 2 is used for connecting with the other inner sleeve of the two pipe sets, and the containing cavity 31 is internally provided with a sealing ring 32 with a D-shaped cross section; as shown in fig. 8, the outer ring of the seal ring 32 provided in the first pipe 1 is a D-shaped arc edge, and the inner ring is a D-shaped straight edge; as shown in fig. 7, the outer ring of the seal ring 32 provided in the second pipe 2 is a D-shaped straight edge, and the inner ring is a D-shaped arc edge.

Alternatively, as shown in fig. 7 and 8, the outer ring of the sealing ring 32 provided on the first pipe 1 is a D-shaped arc edge, the inner ring is a D-shaped straight edge, and the inner ring extends out of the accommodating cavity 31; the outer ring of the sealing ring 32 arranged on the second pipe 2 is a D-shaped straight edge, the inner ring is a D-shaped arc edge, and the outer ring extends out of the accommodating cavity 31.

In this way, when the tube set is mounted, the portion extending out of the accommodating chamber 3 can be made thinner than the portion of the seal ring 32 having a circular cross section, so that the connection tube can be moved to an appropriate position with respect to the tube set, and sealing of the tube set and the connection tube can be achieved after a fastening force is applied to the connection tube.

Can be with 1 overcoat of first pipe in the less nest of tubes of pipe diameter, the fastening force is applyed to the surface of connecting pipe in the great nest of tubes of pipe diameter in the 2 endotheca of second pipe, makes connecting pipe and two nest of tubes produce interference fit, and sealing washer 32 atress produces and warp to realize sealed, firm being connected between the nest of tubes of connecting pipe and different pipe diameters, reduce the occupation to the space of connecting pipe when the connecting pipe is organized. Thus, when the connection pipe is connected to the pipe group, the gasket 32 is in contact with the pipe group, and when a fastening force is applied, the gasket 32 deforms and is accumulated on the pipe group, thereby achieving sealing and fastening.

For example, as shown in fig. 3, when the indoor unit of the air conditioner is connected to the first refrigerant pipe group 41, the outdoor unit is connected to the second refrigerant pipe group 42, the pipe diameter of the first refrigerant pipe group 41 is larger than that of the second refrigerant pipe group 42, and the first refrigerant pipe group 41 and the second refrigerant pipe group 42 are connected by the connecting pipe, the first pipe 1 is sleeved on the second refrigerant pipe group 42, the second pipe 2 is sleeved on the first refrigerant pipe group 41, and then the connecting pipe is fastened to achieve the connection between the first refrigerant pipe group 41 and the second refrigerant pipe group 42.

When the pipe set is used, the pipe diameter of the pipe set with a smaller pipe diameter is required to be between the pipe diameter of the first pipe 1 and the pipe diameter of the second pipe 2, so that when the first pipe 1 is sleeved on the pipe set, the extending degree of the pipe set in the first pipe 1 is limited by the length of the first pipe 1, and the pipe set cannot enter the second pipe 2. In this way, the tube group having a small tube diameter is sealed and firmly confined in the first tube 1. Optionally, the connecting tube is a copper tube.

In an embodiment of the present invention, as shown in fig. 1 and 2, a distance from the accommodating cavity 31 of the first pipe 1 to a joint of the first pipe 1 and the second pipe 2 is d, a length of the first pipe is e, d ═ ke, k ═ 2/3-3/4. Thus, the sealing ring 32 achieves better sealing effect and fastening effect, and the connection between the first pipe 1 and the pipe group is sealed and firm.

Optionally, the distance from the accommodating cavity 31 of the second pipe 2 to the butt end of the second pipe 2 is 20mm to 50 mm. Thus, the sealing ring 32 can achieve a good sealing effect and a good fastening effect, and the connection between the second pipe 2 and the pipe group is sealed and firm.

Optionally, the second tube 2 is a straight tube.

Alternatively, as shown in fig. 9, the second pipe 2 is an elbow, and the included angle of the elbow is greater than 90 degrees and less than 180 degrees. Optionally, the angle of the elbow is 120 degrees. This is suitable for connection between tube sets having an included angle.

In an embodiment of the present invention, as shown in fig. 2 and 5, the second tube 2 comprises a cover 35, and the cover 35 is used for being buckled to the butt end of the tube set when the tube set is sleeved in the second tube 2.

The cap 35 can limit the insertion depth of the second tube 2 in the tube group, and can block the connection gap between the second tube 2 and the tube group, so that the connection between the second tube 2 and the tube group has high sealing performance and stability. Optionally, the cover 35 defines an annular groove for receiving the butt end of the tube set. In this way, the sealing property and the connection stability are further enhanced.

In an embodiment of the present invention, the inner pipe walls of the first pipe 1 and the second pipe 2 are respectively provided with a retaining structure for preventing the pipe sets connected correspondingly from separating.

In an embodiment of the present invention, the retaining structure includes two positioning assemblies 33, and each positioning assembly 33 includes a plurality of protrusions 34 arranged along the same circumferential direction of the connecting pipe. This facilitates the sealing function and the stop function of the projection 34. Optionally, the plurality of projections 34 are evenly distributed along the circumference of the connecting tube. Optionally, the number of bumps 34 is 4-6. Optionally, the ratio of the length of the projection 34 in the circumferential direction to the circumferential length of the connecting pipe is 1/12-1/8. In this way, the projection 34 facilitates the movement of the connector tube into position relative to the tube set during installation and enables the sealing function to be performed after deformation by the clamping force.

The two positioning assemblies 33 cooperate to provide enhanced sealing of the connector tubes and tube sets. Optionally, the lugs 34 of the two positioning assemblies 33 are staggered. The staggered projections 34 compensate for each other in terms of sealing, further enhancing the seal, and also in terms of positioning the connection tubes and tube sets after extrusion. Optionally, the distance between the two positioning assemblies 33 is 3mm to 5 mm. Thus, the sealing effect and the positioning function of the positioning part can be well realized.

Optionally, the bump 34 is an elastic material. When the fastening force is applied to the connection pipe in this way, the projection 34 can be deformed to cause the connection pipe and the pipe group to be caught and sealed. Optionally, the bumps 34 have a thickness of 0.2mm to 0.5 mm. Optionally, the width of the bump 34 is 3mm to 5 mm. In this range, the projection 34 not only provides a good seal, but also facilitates the movement of the connector tube into position relative to the tubing set during installation.

In one embodiment of the present invention, the thickness of the bump 34 is gradually increased from the first pipe 1 to the second pipe 2. Thus, the tube group can be further prevented from coming off from the inside of the connection tube.

An air conditioner comprises the connecting pipe provided by the embodiment. The air conditioner realizes the sealing and firm connection between the pipe groups with different pipe diameters through the connecting pipe, thereby avoiding the leakage of the refrigerant.

The present invention is not limited to the structures that have been described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

Claims (8)

1. A connecting pipe is used for connecting butt ends of two pipe groups and comprises a first pipe and a second pipe which are connected with each other, wherein the pipe diameter of the first pipe is larger than that of the second pipe;

the first pipe is used for being connected with one outer sleeve of the two pipe groups, the second pipe is used for being connected with the other inner sleeve of the two pipe groups, and a sealing ring with a D-shaped cross section is arranged in the accommodating cavity;

the outer ring of the sealing ring arranged on the first pipe is a D-shaped straight edge, and the inner ring of the sealing ring is a D-shaped arc edge; the outer ring of the sealing ring arranged on the second pipe is the D-shaped arc edge, and the inner ring of the sealing ring is the D-shaped straight edge.

2. The connecting tube of claim 1, wherein the receiving cavity of the first tube is at a distance d from the junction of the first tube and the second tube, and the length of the first tube is e, d, k, 2/3-3/4.

3. The connecting tube of claim 1, wherein the second tube comprises a cover for snapping over the butt end of the tube set when the second tube is nested within the tube set.

4. The connecting tube according to claim 1, wherein the inner tube walls of the first tube and the second tube are respectively provided with retaining structures for preventing the tube groups respectively connected correspondingly from being separated.

5. The connecting pipe of claim 4, wherein the retaining structure comprises two positioning components, and each positioning component comprises a plurality of protrusions arranged at intervals along the same circumference of the connecting pipe.

6. The connecting tube of claim 5, wherein the lugs of the two locating assemblies are offset.

7. The connecting tube of claim 5, wherein the thickness of the projection increases from the first tube to the second tube.

8. An air conditioner characterized by comprising the connection pipe according to any one of claims 1 to 7.

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