CN219606358U - Pipe fitting - Google Patents

Abstract

The utility model provides a pipe fitting, and relates to the technical field of pipe fittings. A pipe fitting for connecting with a shunt tube in an air conditioning system, comprising at least two straight sections and at least one bending section; a bending section is connected between any two adjacent straight sections, at least one straight section is preset to be an open-pore section, the open-pore section is provided with a plurality of connecting holes which are arranged at intervals after the bending and forming of a plurality of bending sections, and each connecting hole is used for being connected with one shunt tube. Through the processing mode of buckling earlier and then trompil for the length in the space that occupies of the pipe fitting before the trompil shortens, does benefit to and fixes the pipe fitting when the trompil, and does benefit to tools such as bull drill and once processing shaping with a plurality of connecting holes, has improved trompil efficiency, has shortened production time.

Description

Pipe fitting

Technical Field

The utility model relates to the technical field of pipe fittings, in particular to a pipe fitting.

Background

In the air conditioning system, a low-pressure air outlet pipe is arranged between the evaporator and the compressor to realize the communication between the evaporator and the compressor. In the related art, when manufacturing this pipe fitting, because the outlet duct is longer, the trompil of every turn all needs to fix the pipe body, and is provided with a plurality of holes on this pipe fitting, leads to whole trompil inefficiency, wastes time and energy, and the location produces the error easily.

Disclosure of Invention

Based on this, it is necessary to provide a tube that improves the efficiency of the tapping.

A tube comprising at least two straight sections and at least one bent section; and a bending section is connected between any two adjacent straight sections, at least one straight section is preset to be an open-pore section, and a plurality of connecting holes which are arranged at intervals are formed in the open-pore section after the bending sections are bent and formed.

It can be understood that the arrangement of the bending section can avoid opening important equipment, so that the installation space is saved; the arrangement of the open-pore section is favorable for connecting the shunt tubes so that the refrigerant in the evaporator is shunted to a plurality of shunt tubes and then concentrated into the pipe fitting. The processing mode of bending before punching is adopted, so that the length of the occupied space of the pipe fitting before punching is shortened, the pipe fitting is fixed during punching, tools such as a multi-head drill are facilitated to machine and shape a plurality of connecting holes at one time, punching efficiency is improved, and production time is shortened.

In one embodiment, at least one of the straight sections is provided as a smooth section, and the length of the open-cell section is greater than the length of the smooth section.

It can be appreciated that the stress concentration on the open hole section is larger, so that the longer open hole section has a guarantee on the whole structural strength.

In one embodiment, a plurality of connecting holes on each open hole section are arranged towards the middle of the open hole section, and the plurality of connecting holes are arranged at intervals along the axial direction of the open hole section.

It can be appreciated that, because the bending section has stress concentration, the arrangement can relieve the influence of stress concentration of the opening and bending twice, and is beneficial to relieving the stress concentration. Meanwhile, the connecting hole is arranged at the middle position of the open pore section, so that the positioning during processing is facilitated, and the interference of the clamp on the open pore is avoided.

In one embodiment, the bending section is bent at an angle A ranging from 60 DEG to 150 deg.

It will be appreciated that the appropriate bending angle can maintain a certain structural strength while avoiding the outer structure.

In one embodiment, in the plurality of connection holes, the hole diameter of one part of the connection holes is larger than the hole diameter of the other part of the connection holes.

It can be understood that the smaller aperture of the connecting holes can limit the fluid flow, so that the pressure of the fluid flowing into the pipe fitting is different, and the flow rate is improved.

In one embodiment, the bending section comprises a first bending section, and the straight section comprises a first open section and a second open section; the first bending section is respectively connected with the first open hole section and the second open hole section along two ends of the axis of the first bending section, and at least two connecting holes are respectively formed in the first open hole section and the second open hole section; the axial length of the first perforated section is less than the axial length of the second perforated section.

It can be appreciated that setting up first bending section between first trompil section and the second trompil section can dodge outer structure when carrying fluid, shortens the occupation length of pipe fitting in the space.

In one embodiment, a distance between the connecting hole near the first bending section and the first bending section along the axial direction of the first opening section is a first distance; the distance between the connecting hole close to the first bending section and the first bending section along the axial direction of the second open hole section is a second distance; the second pitch is smaller than the first pitch.

It will be appreciated that the second bore section has a smaller axial length than the first bore section, so that the second spacing is smaller than the first spacing to facilitate protecting the tubular structure.

In one embodiment, the bending section further comprises a second bending section, and one end of the second bending section is connected with one end, far away from the first bending section, of the second open hole section; the straight section further comprises a first smooth section, and one end of the first smooth section is connected with one end, far away from the second open hole section, of the second bending section; the second bending section and the first bending section are bent back, and the bending angle of the second bending section is larger than that of the first bending section.

It can be understood that setting up second bending section and first smooth section can dodge out more structures, improves space utilization. And the stress is dispersed to the opposite side of the second open hole section, so that the stress on the second open hole section is reduced.

In one embodiment, a distance between the connecting hole far from the first bending section and the plugging end of the first opening section along the axial direction of the first opening section is a third distance, and the third distance is larger than the first distance; and along the axial direction of the second open hole section, the distance between one connecting hole close to the second bending section and the second bending section is a fourth distance, and the fourth distance is smaller than the second distance.

It can be appreciated that the third interval is larger than the first interval, so that the impact of the flow of the plugging end is reduced, and the risk of leakage is reduced; the bending angle of the second bending section is larger than that of the first bending section, and the stress concentration at the first bending section can be relieved when the fourth interval is smaller than the second interval.

In one embodiment, the bending section further comprises a third bending section, and one end of the third bending section is connected with one end of the first smooth section away from the second bending section; the straight section further comprises a second smooth section, and the second smooth section is connected with one end, far away from the first smooth section, of the third bending section; the second bending section and the third bending section are arranged in different planes.

It can be understood that setting up third bending segment and second smooth section can further dodge out the outer structure, improves space utilization. The arrangement of the second bending section and the third bending section is beneficial to saving space.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present utility model, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following descriptions are only some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is a side view of a tube structure provided by the present utility model;

fig. 2 is a front view of a pipe structure according to the present utility model.

Reference numerals: 100. a pipe fitting; 10. a straight section; 20. bending sections; 11. a perforated section; 12. a smoothing section; 111. a first perforated section; 112. a second perforated section; 121. a first smoothing section; 122. a second smooth section; 21. a first bending section; 22. a second bending section; 23. a third bending section; 1101. a connection hole; 1111. plugging the end; 1221. a mounting part; 12211. a first section; 12212. and a second section.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and the like are used in the description of the present utility model for the purpose of illustration only and do not represent the only embodiment.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" on a second feature may be that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through intermedial media. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely under the second feature, or simply indicating that the first feature is less level than the second feature.

Unless defined otherwise, all technical and scientific terms used in the specification of the present utility model have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used in the description of the present utility model includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, the present utility model provides a pipe fitting 100 for connecting with a shunt tube in an air conditioning system, comprising at least two straight sections 10 and at least one bending section 20; a bending section 20 is connected between any two adjacent straight sections 10, at least one straight section 10 is preset as an open-pore section 11, the open-pore section 11 is provided with a plurality of connecting holes 1101 arranged at intervals in a bending forming manner of a plurality of bending sections 20, in this embodiment, each connecting hole 1101 is used for being connected with one shunt tube, and a plurality of connecting holes 1101 are formed by one-step machining.

In this way, the refrigerant flowing out of the evaporator enters the shunt pipe for shunting, and then is concentrated into the pipe fitting 100 of the utility model again, and the pipe fitting 100 of the utility model conveys the refrigerant to the compressor unit to complete refrigeration or heating cycle. The bending section 20 can avoid the structure along the way, and plays a role in protecting the structure. Meanwhile, the arrangement of the bending section 20 reduces the space occupied by the pipe fitting 100 as a whole, thereby being beneficial to reducing the occupied area of the air conditioner. The provision of the perforated section 11 facilitates communication with the shunt. During processing, the pipe fitting 100 is bent firstly, and the perforated section 11 is reserved in the bending process, so that the length occupied by the pipe fitting 100 in space is greatly shortened after the pipe fitting 100 is bent, and the pipe fitting 100 is clamped and fixed conveniently; meanwhile, the bending section is used as a reference for clamping and fixing, so that the positioning accuracy of the hole opening angle is ensured, then a plurality of connecting holes 1101 are formed in the pipe fitting 100 by utilizing a multi-head drill or other similar tools in a machining mode, the hole opening efficiency of the pipe fitting 100 is improved, the positioning accuracy of the hole opening is improved, and the production time is shortened. Especially, under the condition that the diameters of the connecting holes 1101 are different, the connecting holes 1101 with different diameters originally need separate positioning and processing steps, and the connecting holes 1101 with different diameters can be formed by one-time positioning processing, so that the processing steps are reduced, the required manpower consumption is reduced, and the cost is reduced.

As shown in fig. 1 and 2, in a preferred embodiment, at least one straight section 10 is provided as a smooth section 12, and the smooth section 12 is provided to mainly reduce stress concentration on the bent pipe 100. The length of the open segment 11 is greater than the length of the smooth segment 12. The smooth section 12, that is, the flat section 10 having a continuous smooth surface, is provided with no connection hole 1101 on the smooth section 12. Because the opening breaks the original stress distribution on the pipe fitting 100, causing stress concentration, and the opening section 11 is reserved when the bending section 20 is processed, the length of the opening section 11 is set to be enough, so that the influence of the stress concentration on the whole opening section 11 can be reduced, and the pipe fitting 100 maintains the preset structural strength. The smooth section 12 is not provided with openings so that the stress distribution on the smooth section 12 is more uniform, so the smooth section 12 is provided in a shorter size to reduce material consumption while meeting the requirements of the connection.

In a further embodiment, as shown in fig. 1 and 2, the plurality of connection holes 1101 on each open hole section 11 are arranged at intervals along the axial direction of the open hole section 11, and the plurality of connection holes 1101 are disposed toward the middle of the open hole section 11. That is, as a whole, a plurality of connection holes 1101 arranged at intervals in the axial direction of the open section 11 form a connection hole group, which is located in the middle of the open section and is disposed toward the middle of the open section 11. Thus, the connecting holes 1101 are distributed from the middle of the open hole section 11 along the axial direction of the open hole section 11 towards the two ends of the open hole section 11 at intervals, at least one end of the open hole section 11 is connected with the bending section 20, and the bending section 20 can cause stress concentration on the pipe fitting 100, so that the connecting holes 1101 tend to be arranged in the middle, further stress concentration on the end of the open hole section 11 can be avoided as much as possible, the uniform stress distribution on the open hole section 11 is facilitated, and the pipe fitting 100 is guaranteed to have sufficient structural strength. At the same time, the positioning of the connecting hole 1101 is also facilitated during the punching process, and enough operation space is reserved to avoid interference with the fixture for clamping the pipe fitting 100.

As shown in fig. 1 and 2, in a preferred embodiment, among the plurality of connection holes 1101, a hole diameter of a part of the connection holes 1101 is larger than a hole diameter of another part of the connection holes 1101. Thus, the apertures of the connecting holes 1101 are different, the fluid pressure input into the pipe fitting 100 from the connecting holes 1101 is different, and the fluid with different pressure flows in the pipe fitting 100 after being mixed, so that the flow speed of the fluid in the pipe fitting 100 can be improved, the consumption of the bending section 20 on the fluid energy can be overcome, and the operation efficiency of the air conditioning system can be improved.

In a preferred embodiment, as shown in FIG. 2, the bending section 20 is bent at an angle A, which is in the range of 60-150. It should be noted that, the bending angle in the present utility model is the included angle between the central axes of the straight sections 10 at the two ends of the bending section 20. So set up, can guarantee that pipe fitting 100 has sufficient structural strength, reduce the stress concentration of kink department, avoid pipe fitting 100 fracture leakage in kink section 20 department as far as possible, can also effectively dodge the structure simultaneously, reduce occupation space. In a specific embodiment, bending section 20 is bent at an angle a of 60 °, 90 °, or 150 °.

As shown in fig. 1 and 2, in a specific embodiment, the bending section 20 includes a first bending section 21, and the straight section 10 includes a first hole section 111 and a second hole section 112; the two ends of the first bending section 21 are respectively connected with the first opening section 111 and the second opening section 112, and at least two connecting holes 1101 are respectively formed on the first opening section 111 and the second opening section 112. In this way, the first bending section 21 can avoid the external structure, and the first opening section 111 and the second opening section 112 are respectively provided with the connecting hole 1101, so that the first bending section and the second bending section can be connected with the shunt pipe to realize fluid delivery.

Further, as shown in fig. 1 and 2, the bending section 20 further includes a second bending section 22, and one end of the second bending section 22 is connected to one end of the second opening section 112, which is far away from the first bending section 21; the straight section 10 further includes a first smooth section 121, and an end of the first smooth section 121 is connected to an end of the second bending section 22 remote from the second open hole section 112.

Therefore, the second bending section 22 is continuously arranged on the basis of the first bending section 21, so that the occupied length of the pipe fitting 100 in space can be further shortened, more external structures can be avoided, and the space utilization rate is further improved. At the same time, the first smooth section 121 facilitates mitigating stress concentrations on the bent pipe 100.

Further, as shown in fig. 1 and 2, the bending section 20 further includes a third bending section 23, and one end of the third bending section 23 is connected to one end of the first smoothing section 121 away from the second bending section 22; the straight section 10 further includes a second smooth section 122, the second smooth section 122 being connected to an end of the third bent section 23 remote from the first smooth section 121. Therefore, the effects of the third bending section 23 and the second bending section 22 are similar, and the description is omitted again, and the bending section 20 can be set with more practical requirements under practical conditions, which is not limited by the present utility model.

In a preferred embodiment, the second bending section 22 is arranged out of plane with the third bending section 23. Thus, the overall length of the pipe fitting 100 can be reduced, the space can be saved, and the avoidance of the external structure is facilitated.

It should be noted that, as shown in fig. 1 and 2, in the embodiment of the present utility model, an end of the first opening section 111 facing away from the first bending section 21 is configured as a blocking end 1111 to block and prevent leakage of the fluid, and limit a flow path of the fluid.

As shown in fig. 1 and 2, as a preferred embodiment, a reducing section is configured on an end of the second sliding section 122 remote from the third bending section 23 to form a mounting portion 1221. Specifically, the mounting portion 1221 includes a first section 12211 and a second section 12212, the first section 12211 and the second section 12212 being connected, the pipe diameter of the first section 12211 gradually increasing outwardly from the end of the second sliding section 122, the second section 12212 extending outwardly from the end of the first section 12211 in the axial direction of the second sliding section 122, the second section 12212 being for connection to an external pipe. In this way, the mounting portion 1221 can assemble the pipe fitting 100 with other external connection pipes, the pipe diameter of the second section 12212 is larger than that of the main body of the second smooth section 122, the external connection pipe is facilitated to extend into the second section 12212, and the end face of the external connection pipe can be abutted against the inner wall of the first section 12211 by the gradually expanding arrangement of the first section 12211, so that the connection limiting function is achieved.

As shown in fig. 1 and 2, in a preferred embodiment, the axial length of the first open section 111 is smaller than the axial length of the second open section 112; the number of connecting holes 1101 on the first perforated section 111 is smaller than the number of connecting holes 1101 on the second perforated section 112. Thus, the second open section 112 has a longer length, and the number of connecting holes 1101 corresponding to the second open section 112 is larger, the first open section 111 has a shorter length, and the number of connecting holes 1101 corresponding to the first open section 111 is smaller, so that the pipe fitting 100 can be ensured to have sufficient structural strength while being connected with a plurality of shunt pipes.

As shown in fig. 1 and 2, further, along the axial direction of the first opening section 111, a distance between a connection hole 1101 near the first bending section 21 and the first bending section 21 is a first distance, and the first distance is B; along the axial direction of the second opening section 112, the distance between a connecting hole 1101 near the first bending section 21 and the first bending section 21 is a second distance, and the second distance is C; the second pitch is smaller than the first pitch, i.e. C < B. Thus, the second pitch is shorter because the number of the connection holes 1101 of the second hole segment 112 is larger, and the first pitch is longer because the number of the connection holes 1101 of the first hole segment 111 is smaller, so that the second pitch is smaller than the first pitch.

As shown in fig. 1 and 2, in a preferred embodiment, the second bending section 22 and the first bending section 21 bend away from each other, and the bending angle of the second bending section 22 is greater than that of the first bending section 21. In this way, the bending directions of the two ends of the first opening section 111 are opposite, which is beneficial to expanding the avoidance space. Meanwhile, since the second bending section 22 is connected with the first smooth section 121, the length of the first smooth section 121 is shorter, so that the stress can be reduced due to the larger bending angle of the second bending section 22, so as to ensure the structural strength of the first smooth section 121. The bending angle of the second bending section 22 is set to 93 °, and the angle of the first bending section 21 is set to 87 °, so that the angle between the first bending section 21 and the second bending section 22 can be designed according to practical situations, and the above effects only need to be satisfied.

As shown in fig. 1 and 2, on the basis of the larger bending angle of the second bending section 22, further, the distance between the connecting hole 1101 on the first opening section 111 far from the first bending section 21 and the end of the plugging end 1111 of the first opening section 111 is set to be a third distance, the third distance is D, and the third distance is greater than the first distance, i.e., D > B; the distance between the connecting hole 1101 on the second hole section 112 near the second bending section 22 and the second bending section 22 is set to be a fourth distance, wherein the fourth distance is E, and the fourth distance is smaller than the second distance, namely E < C. In this way, since the sealing end 1111 is not bent, the third distance is greater than the first distance, so that the distance between the connecting hole 1101 and the sealing end 1111 is longer, the flow rate of the fluid flowing to the sealing end 1111 is reduced, and the possibility of leakage at the sealing end 1111 is reduced. Because the bending angle of the second bending section 22 is larger than that of the first bending section 21, the stress concentration at the second bending section 22 is smaller than that at the first bending section 21, so that the fourth spacing is smaller than the second spacing, which is beneficial to reducing the stress concentration at the first bending section 21, thereby protecting the structure of the pipe fitting 100.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of the utility model should be determined from the following claims.

Claims (10)

1. A tube, characterized by comprising at least two straight sections (10) and at least one bent section (20);

a bending section (20) is connected between any two adjacent straight sections (10), at least one straight section (10) is preset to be an open-pore section (11), and a plurality of connecting holes (1101) which are arranged at intervals are formed in the open-pore section (11) after a plurality of the bending sections (20) are bent and formed.

2. A pipe according to claim 1, characterized in that at least one of the straight sections (10) is provided as a smooth section (12), the length of the open-pored section (11) being greater than the length of the smooth section (12).

3. A pipe fitting according to claim 1, characterized in that a plurality of said connection holes (1101) on each of said perforated sections (11) are arranged at intervals in the axial direction of said perforated sections (11), and that a plurality of said connection holes (1101) are disposed toward the middle of said perforated sections (11).

4. A tube according to claim 1, characterized in that the bending section (20) is bent over an angle a in the range of 60 ° -150 °.

5. A pipe fitting according to claim 1, characterized in that, of a plurality of said connection holes (1101), a part of said connection holes (1101) has a larger pore diameter than another part of said connection holes (1101).

6. A tubular according to any one of claims 1 to 5, wherein the bending section (20) comprises a first bending section (21), the straight section (10) comprising a first perforated section (111) and a second perforated section (112);

two ends of the first bending section (21) are respectively connected with the first open hole section (111) and the second open hole section (112), and at least two connecting holes (1101) are respectively formed in the first open hole section (111) and the second open hole section (112);

the axial length of the first bore section (111) is smaller than the axial length of the second bore section (112).

7. A tubular element according to claim 6, characterized in that the distance between a connecting hole (1101) adjacent to the first bending section (21) and the first bending section (21) in the axial direction of the first perforated section (111) is a first distance;

a distance between the connecting hole (1101) close to the first bending section (21) and the first bending section (21) along the axial direction of the second open hole section (112) is a second distance;

the second pitch is smaller than the first pitch.

8. A tube according to claim 7, wherein the bending section (20) further comprises a second bending section (22), one end of the second bending section (22) being connected to an end of the second perforated section (112) remote from the first bending section (21);

the straight section (10) further comprises a first smooth section (121), and one end of the first smooth section (121) is connected with one end, far away from the second open hole section (112), of the second bending section (22);

the second bending section (22) and the first bending section (21) are bent back, and the bending angle of the second bending section (22) is larger than that of the first bending section (21).

9. A tubular element according to claim 8, characterized in that the distance between a connecting hole (1101) of the first bending section (21) and the blocking end (1111) of the first opening section (111) in the axial direction of the first opening section (111) is a third distance, which is larger than the first distance;

along the axial direction of the second open hole section (112), a distance between a connecting hole (1101) close to the second bending section (22) and the second bending section (22) is a fourth distance, and the fourth distance is smaller than the second distance.

10. A tubular element according to claim 9, wherein the bending section (20) further comprises a third bending section (23), an end of the third bending section (23) being connected to an end of the first smoothing section (121) remote from the second bending section (22);

the straight section (10) further comprises a second smooth section (122), and the second smooth section (122) is connected with one end of the third bending section (23) far away from the first smooth section (121);

the second bending section (22) and the third bending section (23) are arranged on different surfaces.