CN217483332U - Sealing structure, heat exchanger and air conditioner - Google Patents

Abstract

The utility model provides a seal structure, heat exchanger and air conditioner, seal structure are used for connecting first pipe fitting and second pipe fitting, and first pipe fitting has the flaring portion that the cover was established on the second pipe fitting, and seal structure includes: the connecting body is of a tubular structure, and at least one pipe orifice of the tubular structure is an open end for inserting the flaring part; wherein, the intracavity of connecting the body has the bellying, and the minimum that connects the body and be located the internal perimeter of bellying is less than the minimum that connects the body and be located the internal perimeter that the open end is located to make bellying and flaring portion interference fit. The utility model provides an easily cause environmental pollution's problem when adopting the brazing to be connected between copper pipe in the air conditioner among the prior art and the copper pipe.

Description

Sealing structure, heat exchanger and air conditioner

Technical Field

The utility model relates to an air conditioner field particularly, relates to a seal structure, heat exchanger and air conditioner.

Background

At present, manual brazing operation is mostly adopted for sealing connection between copper pipes in the air conditioning industry, and welding between the copper pipes is completed by heating a base metal to melt a welding flux.

However, the conventional manual brazing has many problems, such as loud noise, high temperature, and great damage to eyes due to long-time brazing operation. Moreover, manual brazing is easy to cause environmental pollution.

SUMMERY OF THE UTILITY MODEL

A primary object of the utility model is to provide a seal structure, heat exchanger and air conditioner to easily cause environmental pollution's problem when adopting the braze welding to be connected between copper pipe and the copper pipe in the air conditioner among the solution prior art.

In order to achieve the above object, according to the first aspect of the present invention, there is provided a sealing structure for connecting a first pipe fitting and a second pipe fitting, the first pipe fitting having a flared portion at which the second pipe fitting is fitted, the sealing structure comprising: the connecting body is of a tubular structure, and at least one pipe orifice of the tubular structure is an open end for inserting the flaring part; the connecting body is provided with a bulge in a tube cavity, and the minimum value of the inner perimeter of the connecting body, which is positioned on the bulge, is smaller than the minimum value of the inner perimeter of the connecting body, which is positioned on the opening end, so that the bulge is in interference fit with the flaring part.

Further, both ends of the tubular structure are open ends; and/or the inner perimeter of the open end gradually increases along the axial direction of the tubular structure and along the direction far away from the convex part; and/or the connecting body is a stainless steel tube.

Further, the inner wall surface of the opening end is formed by rotating a curved line around the central axis of the connecting body; the inner wall surface of the bulge part is formed by rotating the straight line segment around the central axis of the connecting body.

Furthermore, the inner wall surface of the bulge part is cylindrical, the inner wall surface of the opening end is circular truncated cone-shaped, and the diameter of the small-diameter end of the inner wall surface of the opening end is equal to the diameter of the cylinder.

Further, the boss occupies 2/3 the entire axial length of the connection body; and/or the sealing structure comprises a buffer pad arranged on the inner wall surface of the bulge part; and/or the sealing structure further comprises a sealing component, and after the connecting body is sleeved on the flared part, the sealing component is filled between the flared part and the opening end.

Further, the connecting body further comprises: and the antiskid part is arranged on the outer periphery of the connecting body.

Furthermore, the anti-skidding portion comprises a plurality of anti-skidding teeth, the anti-skidding teeth are arranged at intervals, and each anti-skidding tooth extends along the axial direction of the connecting body.

Furthermore, the end surfaces of the free ends of the anti-slip teeth are arc-shaped surfaces, and the end surfaces of the anti-slip teeth are positioned on the same cylindrical surface; and/or an inter-tooth groove is formed between two adjacent anti-slip teeth, and the inner wall surface of the inter-tooth groove is an arc surface.

According to the utility model discloses a second aspect provides a heat exchanger, including the runner pipe of the heat exchange tube that supplies the refrigerant to flow in or flow out the heat exchanger, the runner pipe has the flaring portion, and the heat exchanger still includes foretell seal structure, and seal structure's connection body cover is established on the flaring portion.

According to the utility model discloses a third aspect provides an indoor unit of air conditioner, including the heat exchanger, the heat exchanger is foretell heat exchanger.

By applying the technical scheme of the utility model, the sealing structure of the utility model is used for connecting a first pipe fitting and a second pipe fitting, the first pipe fitting is provided with a flaring part sleeved on the second pipe fitting, the sealing structure comprises a connecting body, the connecting body is of a tubular structure, and at least one pipe orifice of the tubular structure is an opening end for inserting the flaring part; wherein, the intracavity of connecting the body has the bellying, and the minimum that connects the body and be located the internal perimeter of bellying is less than the minimum that connects the body and be located the internal perimeter that the open end is located to make bellying and flaring portion interference fit. This application sets up the connection body, realizes the sealing connection between first pipe fitting and the second pipe fitting through the bellying of connection body and the interference fit of flaring portion, like this, has realized the solderless sealing connection between the pipeline, very big improvement the whole environment of workshop effect, the welding cost of reduction has reduced the installation cost after sale.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

figure 1 shows a schematic overall structural view of an embodiment of a sealing structure according to the invention;

figure 2 shows a schematic plan view of the sealing structure according to figure 1;

figure 3 shows a cross-sectional view of the sealing structure according to figure 1;

figure 4 shows a top view of the sealing structure according to figure 1;

fig. 5 shows a schematic structural view of a first tube according to an embodiment of the invention;

fig. 6 shows a schematic plan view of the first tube part according to fig. 5;

FIG. 7 shows a top view of the first tube according to the sealing arrangement of FIG. 5;

figure 8 shows a schematic structural view of a connection body of a sealing structure according to the invention;

FIG. 9 shows a top view of a connecting body according to the sealing structure of FIG. 8;

FIG. 10 shows a side view of a connector body according to the sealing structure of FIG. 8;

FIG. 11 shows a schematic cross-sectional view A-A of a connection body according to the sealing arrangement in FIG. 10;

fig. 12 shows a schematic structural view of a second tube according to an embodiment of the invention;

FIG. 13 shows a schematic plan view of a second tubular member according to the sealing arrangement of FIG. 12;

FIG. 14 shows a top view of a second tube according to the sealing arrangement of FIG. 12;

fig. 15 shows a schematic structural view of a first perspective of an embodiment of a heat exchanger according to the present invention; and

fig. 16 shows a schematic structural diagram of a second perspective of an embodiment of a heat exchanger according to the present invention.

Wherein the figures include the following reference numerals:

1. a heat exchanger; 100. a first pipe member; 101. a flared part; 200. a second pipe member; 300. a flow-through tube; 10. a connecting body; 11. an open end; 110. a curved line; 111. a straight line segment; 12. a boss portion; 13. a cushion pad; 14. a sealing member; 15. an anti-slip portion; 150. anti-slip teeth; 151. an inter-tooth groove; 20. a heat exchange tube.

Detailed Description

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Referring to fig. 1 to 16, the present invention provides a sealing structure for connecting a first pipe 100 and a second pipe 200, wherein the first pipe 100 has a flared portion 101 sleeved on the second pipe 200, and the sealing structure comprises: the connecting body 10 is a tubular structure, and at least one pipe orifice of the tubular structure is an open end 11 for inserting the flaring part 101; wherein, the connecting body 10 has a convex portion 12 in the lumen, and the minimum value of the inner circumference of the connecting body 10 at the convex portion 12 is smaller than the minimum value of the inner circumference of the connecting body 10 at the open end 11, so that the convex portion 12 is in interference fit with the flared portion 101.

The sealing structure of the utility model is used for connecting a first pipe fitting 100 and a second pipe fitting 200, the first pipe fitting 100 is provided with an expanding part 101 which is sleeved on the second pipe fitting 200, the sealing structure comprises a connecting body 10, the connecting body 10 is of a tubular structure, and at least one pipe orifice of the tubular structure is an open end 11 for the expanding part 101 to be inserted; wherein, the connecting body 10 has a convex portion 12 in the lumen, and the minimum value of the inner circumference of the connecting body 10 at the convex portion 12 is smaller than the minimum value of the inner circumference of the connecting body 10 at the open end 11, so that the convex portion 12 is in interference fit with the flared portion 101. This application sets up connecting body 10, and the interference fit through connecting body 10's bellying 12 and flaring portion 101 realizes the sealing connection between first pipe fitting 100 and the second pipe fitting 200, like this, has realized the solderless sealing connection between the pipeline, very big improvement the overall environment of workshop effect, the welding cost that reduces has reduced the installation cost after sale.

Wherein, the inner perimeter of the predetermined position of the connecting body 10 is the inner perimeter of the cross section perpendicular to the axis of the connecting body 10 at the predetermined position.

Specifically, both ends of the tubular structure are open ends 11; and/or the inner perimeter of the open end 11 is gradually increased in the axial direction of the tubular structure and in the direction away from the boss 12; and/or the connection body 10 is a stainless steel tube.

Specifically, the first pipe 100 and the second pipe 200 are both copper pipes.

As shown in fig. 11, the inner wall surface of the open end 11 is formed by rotating the curved line 110 around the center axis of the connecting body 10; the inner wall surface of the boss 12 is formed by rotating a straight line segment 111 around the central axis of the connecting body 10.

Specifically, curved line 110 smoothly transitions with straight line segment 111.

Specifically, the inner wall surface of the boss 12 is cylindrical, the inner wall surface of the opening end 11 is circular truncated cone-shaped, and the diameter of the small-diameter end of the inner wall surface of the opening end 11 is equal to the diameter of the cylinder.

Specifically, the inner diameter of the end of the open end 11 remote from the boss 12 is larger than the inner diameter of the end of the open end 11 close to the boss 12. The inner wall surface of the opening end 11 is the curved line 110 to play a transition role when the connection body 10 is inserted into a pipe, the inner diameter of the connection body 10 at a position far from the center of the connection body 10 is larger, the connection body 10 can be easily sleeved on the outer periphery of the pipe, and the inner diameter of the connection body 10 at a position near the center of the connection body 10 is smaller.

The utility model discloses an in the concrete implementation of embodiment, need be connected first pipe fitting 100 with second pipe fitting 200 earlier when using, will connect body 10 and pack into the flaring portion 101 of second pipe fitting again, can realize the sealing connection of first pipe fitting 100 with second pipe fitting 200 after compressing tightly, realize sealing connection's new construction technology between different pipe fittings to avoid manual brazing between partial pipe fitting, and then reduce the environmental pollution that the welding caused.

Specifically, the mutual fit of the second pipe element 200 and the flared portion 101 of the first pipe element 100 in the present application realizes a preliminary sealing connection, wherein the inner diameter of the flared portion 101 needs to be equal to or slightly larger than the outer diameter of the second pipe element 200 to realize the fit therebetween, and then the locking of the connection body 10 is performed, so as to realize a sealing effect between the first pipe element 100 and the second pipe element 200.

The utility model discloses an in the concrete implementation of embodiment, the great one end of the internal diameter of the open end 11 of connecting body 10 passes through the flaring portion 101 of first pipe fitting 100 earlier, when flaring portion 101 through the internal wall face of the minimum internal diameter of open end 11, begins to connect the process that compresses tightly of flaring portion 101 of body 10 and first pipe fitting 100, and first pipe fitting 100 (copper pipe) can take place small deformation this moment to realize the sealed locking technology between first pipe fitting 100 and the second pipe fitting 200. The open ends 11 of both ends of the connecting body 10 can be realized as a sleeve without distinguishing the front and the back.

Specifically, a dedicated mold is used for the compression process of the connection body 10.

Optionally 2/3 where the projections 12 occupy the axial length of the entire connector body 10; and/or the sealing structure includes a cushion pad 13, the cushion pad 13 is arranged on the inner wall surface of the boss 12; and/or the sealing structure further comprises a sealing part 14, and after the connecting body 10 is sleeved on the flared part 101, the sealing part 14 is filled between the flared part 101 and the opening end 11.

Specifically, the connecting body 10 further includes: and a slip prevention part 15, the slip prevention part 15 being provided at an outer periphery of the connection body 10.

In the embodiment of the present application, the anti-slip portion 15 includes a plurality of anti-slip teeth 150, the plurality of anti-slip teeth 150 are disposed at intervals, and each anti-slip tooth 150 extends along the axial direction of the connecting body 10.

Specifically, the main function of the anti-slip teeth 150 is to facilitate the work of sleeving the connecting body 10, so that the connecting body 10 is not prone to sleeve skewness, insufficient friction, and the like during the sleeving process, thereby assisting the work of sealing the pipe fitting more effectively.

As shown in fig. 9, the end surfaces of the free ends of the anti-slip teeth 150 are all arc surfaces, and the end surfaces of the anti-slip teeth 150 are located on the same cylindrical surface; and/or an inter-tooth groove 151 is formed between two adjacent anti-slip teeth 150, and the inner wall surface of the inter-tooth groove 151 is an arc-shaped surface.

As shown in fig. 15 and 16, the present invention further provides a heat exchanger, which comprises a flow pipe 300 for the refrigerant to flow into or out of the heat exchange pipe 20 of the heat exchanger, wherein the flow pipe 300 has an expanding portion 101, the heat exchanger further comprises a sealing structure, and the connecting body 10 of the sealing structure is sleeved on the expanding portion 101.

The utility model also provides an indoor unit of air conditioner, including heat exchanger 1, the heat exchanger is foretell heat exchanger.

In conclusion, the main function of the connecting body is to lock two copper pipes which are matched with each other, sealing of the two copper pipe fittings after locking is achieved, and therefore sealing connection between the copper pipes is achieved through the novel structure, manual brazing of part of pipeline fittings is omitted, and then environmental pollution and production cost caused by welding are reduced.

From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects:

the sealing structure of the utility model is used for connecting a first pipe fitting 100 and a second pipe fitting 200, the first pipe fitting 100 is provided with a flaring part 101 which is sleeved on the second pipe fitting 200, the sealing structure comprises a connecting body 10, the connecting body 10 is of a tubular structure, and at least one pipe orifice of the tubular structure is an open end 11 for the flaring part 101 to be inserted; wherein, the connecting body 10 has a convex portion 12 in the lumen, and the minimum value of the inner perimeter of the connecting body 10 at the convex portion 12 is smaller than the minimum value of the inner perimeter of the connecting body 10 at the open end 11, so that the convex portion 12 is in interference fit with the flared portion 101. This application sets up connecting body 10, and the interference fit through connecting body 10's bellying 12 and flaring portion 101 realizes the sealing connection between first pipe fitting 100 and the second pipe fitting 200, like this, has realized the solderless sealing connection between the pipeline, very big improvement the overall environment of workshop effect, the welding cost that reduces has reduced the installation cost after sale.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …", "above … …", "above … …, on a surface", "above", and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, so that the scope of the present application is not to be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A sealing structure for connecting a first pipe member (100) and a second pipe member (200), the first pipe member (100) having a flared portion (101) fitted over the second pipe member (200), the sealing structure comprising:

the connecting body (10) is of a tubular structure, and at least one pipe orifice of the tubular structure is an open end (11) for inserting the flaring part (101);

the connecting body (10) is internally provided with a convex part (12), the connecting body (10) is positioned at the minimum value of the inner perimeter of the convex part (12) and is smaller than the minimum value of the inner perimeter of the connecting body (10) at which the opening end (11) is positioned, so that the convex part (12) is in interference fit with the flaring part (101).

2. The sealing structure of claim 1,

both ends of the tubular structure are the open ends (11); and/or

The inner perimeter of the open end (11) is gradually increased along the axial direction of the tubular structure and along the direction far away from the convex part (12); and/or

The connecting body (10) is a stainless steel pipe.

3. The sealing structure according to claim 1, characterized in that the inner wall surface of the open end (11) is formed by a curved wire (110) rotated about the central axis of the connecting body (10); the inner wall surface of the bulge part (12) is formed by rotating a straight line segment (111) around the central axis of the connecting body (10).

4. The sealing structure according to claim 1, wherein an inner wall surface of the boss portion (12) is cylindrical, an inner wall surface of the open end (11) is frustoconical, and a diameter of a small diameter end of the inner wall surface of the open end (11) is equal to a diameter of the cylindrical.

5. The sealing structure of claim 1,

2/3, the projection (12) occupying the entire axial length of the connection body (10); and/or

The sealing structure comprises a buffer pad (13), wherein the buffer pad (13) is arranged on the inner wall surface of the bulge part (12); and/or

The sealing structure further comprises a sealing component (14), and after the connecting body (10) is sleeved on the flared part (101), the sealing component (14) is filled between the flared part (101) and the opening end (11).

6. The sealing structure according to claim 1, characterized in that said connecting body (10) further comprises:

a non-slip portion (15), the non-slip portion (15) being provided at an outer periphery of the connection body (10).

7. The sealing structure according to claim 6, characterized in that said anti-slip portion (15) comprises a plurality of anti-slip teeth (150), said plurality of anti-slip teeth (150) being arranged at a mutual distance, each of said anti-slip teeth (150) extending in the axial direction of said connecting body (10).

8. The sealing structure of claim 7,

the end surfaces of the free ends of the anti-skid teeth (150) are arc-shaped surfaces, and the end surfaces of the anti-skid teeth (150) are positioned on the same cylindrical surface; and/or

An inter-tooth groove (151) is formed between every two adjacent anti-slip teeth (150), and the inner wall surface of the inter-tooth groove (151) is an arc-shaped surface.

9. A heat exchanger comprising a flow-through tube (300) for a refrigerant flowing into or out of a heat exchange tube (20) of the heat exchanger, the flow-through tube (300) having a flared portion (101), characterized in that the heat exchanger further comprises a sealing structure according to any one of claims 1 to 8, the connecting body (10) of the sealing structure being fitted over the flared portion (101).

10. An air conditioner comprising a heat exchanger, wherein the heat exchanger is the heat exchanger of claim 9.

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