CN217058043U

CN217058043U - Piping assembly, pipeline device and refrigerating system

Info

Publication number: CN217058043U
Application number: CN202220287329.0U
Authority: CN
Inventors: 崔渊博; 李洋; 王命仁; 任常宝; 崔春雷; 阳媛
Original assignee: GD Midea Heating and Ventilating Equipment Co Ltd; Hefei Midea Heating and Ventilating Equipment Co Ltd
Current assignee: GD Midea Heating and Ventilating Equipment Co Ltd; Hefei Midea Heating and Ventilating Equipment Co Ltd
Priority date: 2022-02-11
Filing date: 2022-02-11
Publication date: 2022-07-26
Anticipated expiration: 2032-02-11

Abstract

The utility model discloses a piping subassembly, piping installation and refrigerating system. The piping assembly includes: a filter element having a first port and a second port; the first pipeline is connected with the first interface, and the material of the first pipeline comprises a first metal; the second pipeline is connected with the second interface, and the material of the second pipeline comprises a second metal; the pipe distribution connecting sleeve is connected to one end, far away from the filtering element, of the second pipeline, the material of the pipe distribution connecting sleeve comprises first metal, and the melting point of the first metal is lower than that of the second metal. According to the utility model discloses a piping subassembly adopts the first metal that the melting point is lower to make with first pipeline and piping adapter sleeve and forms, makes things convenient for piping subassembly and other pipeline structures to carry out welded connection, simultaneously, through the kind of the first metal of reasonable selection and second metal, can improve heat transfer performance, corrosion resisting property, shock resistance, vibration resistance and the whole cost of piping subassembly.

Description

Piping assembly, pipeline device and refrigerating system

Technical Field

The utility model relates to a tube coupling technical field particularly, relates to a piping subassembly, have the pipe device of this piping subassembly and have this pipe device's refrigerating system.

Background

In a refrigeration system (such as an air conditioner), a valve body such as a four-way valve is an essential element, and the valve body is generally connected to other components in the refrigeration system by using a piping assembly. The existing piping assembly for connecting the valve body is often made of copper so as to be conveniently connected with other copper pipe fittings in the refrigeration system. Although the copper pipe fitting has the advantages of easiness in forming and processing, easiness in welding and the like, the copper pipe fitting is low in heat transfer coefficient, poor in heat exchange performance, poor in corrosion resistance, shock resistance and vibration resistance, and high in price, so that the overall production cost of the refrigeration system is high.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the above-mentioned technical problem among the prior art to a certain extent at least. Therefore, the utility model provides a piping subassembly is favorable to promoting the heat transfer performance.

The utility model also provides a plumbing installation of having above-mentioned piping subassembly.

The utility model also provides a refrigerating system of having above-mentioned piping installation.

According to the utility model discloses piping subassembly includes: a filter element having a first interface and a second interface; the first pipeline is connected with the first interface, and the material of the first pipeline comprises a first metal; a second pipe connected to the second port, the second pipe being made of a second metal; the pipe connecting sleeve is connected to one end, far away from the filtering element, of the second pipeline, the pipe connecting sleeve is made of the first metal, and the melting point of the first metal is lower than that of the second metal.

According to the utility model discloses piping subassembly forms first pipeline and the manufacturing of the first metal that the piping adapter sleeve adopted the melting point lower, makes things convenient for piping subassembly and other pipeline structures to carry out welded connection, simultaneously, through the kind of the first metal of reasonable selection and second metal, can improve heat transfer performance, corrosion resisting property, shock resistance and the anti vibration performance of piping subassembly to be favorable to reducing the cost of piping subassembly.

According to some embodiments of the invention, the first metal is copper, and/or the second metal is iron.

According to the utility model discloses pipeline device of second aspect embodiment, including first valve body, second valve body and foretell piping subassembly, first valve body is including takeover and takeover adapter sleeve, the takeover adapter sleeve with it is fixed to take over, the material of takeover adapter sleeve includes first metal, the takeover adapter sleeve with first pipeline is direct or indirect welded fastening, the material of second valve body includes first metal, the second valve body with piping adapter sleeve welded fastening.

According to some embodiments of the utility model, the takeover adapter sleeve with first pipeline direct weld is fixed.

According to the utility model discloses a some embodiments, the takeover adapter sleeve with the indirect welded fastening of first pipeline.

Specifically, the piping arrangement further comprises: the material of the third pipeline comprises the first metal, the connecting pipe connecting sleeve is fixedly welded with one end of the third pipeline, and the first pipeline is fixedly welded with the other end of the third pipeline.

Further, the first pipeline comprises a straight cylinder section and a flaring section, the diameter of the flaring section is larger than that of the straight cylinder section, the flaring section is connected with the straight cylinder section through a transition section, the straight cylinder section is inserted into the first interface, and the third pipeline is inserted into the flaring section.

Optionally, the third conduit is inserted to the junction of the flared section and the transition section.

According to some embodiments of the utility model, first valve body is the cross valve, and/or, the second valve body is the stop valve.

According to the third aspect of the present invention, a refrigeration system includes the above-mentioned pipeline device.

The refrigeration system has the same advantages of the above-mentioned piping device over the prior art, and will not be described herein again.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic view of a piping assembly according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of a pipeline apparatus according to an embodiment of the present invention;

fig. 3 is a top view of a pipeline apparatus according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is a partial enlarged view at B in FIG. 4;

fig. 6 is a schematic view of a tubing assembly according to another embodiment of the present invention;

fig. 7 is a schematic perspective view of a pipeline apparatus according to another embodiment of the present invention;

fig. 8 is a top view of a pipeline apparatus according to another embodiment of the present invention;

FIG. 9 is a cross-sectional view taken along line C-C of FIG. 8;

FIG. 10 is an enlarged view of a portion of FIG. 9 at D;

fig. 11 is a schematic diagram of a refrigeration system according to an embodiment of the present invention.

Reference numerals:

the system comprises a refrigeration system 1000, a pipeline device 100, a piping assembly 10, a filter element 1, a first interface 11, a second interface 12, a first pipeline 2, a straight tube section 21, a flared section 22, a transition section 23, a second pipeline 3, a piping connecting sleeve 4, a first valve body 20, a valve body 201, a connecting pipe 202, a connecting pipe connecting sleeve 203, a second valve body 30 and a third pipeline 40.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; may be mechanically, electrically or otherwise in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

The piping assembly 10, the pipeline device 100, and the refrigeration system 1000 according to the embodiment of the present invention are described in detail below with reference to fig. 1 to 11.

Referring to fig. 1, a piping assembly 10 according to an embodiment of the present invention may include: filter element 1, first pipeline 2, second pipeline 3 and piping adapter 4.

The filter element 1 is provided with a first connector 11 and a second connector 12, the first pipeline 2 is connected with the first connector 11, the second pipeline 3 is connected with the second connector 12, and the tubing connecting sleeve 4 is connected to one end, far away from the filter element 1, of the second pipeline 3. In a specific embodiment, the first pipeline 2 is welded and fixed at a first port 11 of the filter element 1, the second pipeline 3 is welded and fixed at a second port 12 of the filter element 1, and the pipe connecting sleeve 4 is welded and fixed at one end of the second pipeline 3 far away from the filter element 1.

A passage is formed in the first pipeline 2, the filter element 1, the second pipeline 3 and the tubing connecting sleeve 4, a medium (such as a refrigerant and the like) can sequentially pass through the first pipeline 2, the filter element 1, the second pipeline 3 and the tubing connecting sleeve 4, or sequentially pass through the tubing connecting sleeve 4, the second pipeline 3, the filter element 1 and the first pipeline 2, a filter element can be arranged in the filter element 1, and the medium can be filtered when passing through the filter element 1.

The material of the first pipe 2 comprises a first metal, which is understood to mean that the main material of the first pipe 2 comprises the first metal. In some embodiments, the first metal is copper. The present invention is described by taking the first metal as copper as an example, so that the main material of the first pipeline 2 includes copper, and may also include other materials, and of course, the first pipeline 2 may also be a pure copper pipe.

The material of the second pipe 3 comprises a second metal, which is understood to mean that the main material of the second pipe 3 comprises the second metal. In some embodiments, the second metal is iron. The present invention is described by taking the second metal as iron as an example, so that the main material of the second pipeline 3 includes iron, and may further include other materials, such as carbon, so that the second pipeline 3 is formed as a steel pipe, and optionally, the second pipeline 3 is a stainless steel pipe. Of course, the second pipe 3 can also be a pure iron pipe.

The material of the pipe connecting sleeve 4 includes a first metal, and it is understood that the main material of the pipe connecting sleeve 4 includes the first metal, and when the first metal is copper, the main material of the pipe connecting sleeve 4 includes copper, and may also include other materials, and of course, the pipe connecting sleeve 4 may also be a pure copper sleeve.

The melting point of the first metal is lower than that of the second metal, for example, when the first metal is copper and the second metal is iron, the melting point of copper is lower than that of iron, so that the welding temperature required by the first metal is lower than that required by the second metal during welding, which is beneficial to saving energy and facilitating welding.

Generally, the welding temperature of the flame welding gun is lower than that of the tunnel furnace brazing, so that the pipeline mainly made of the first metal can be welded with other parts mainly made of the first metal by the flame welding gun, for example, the first pipeline 2 and the pipe connecting sleeve 4 of the pipe assembly 10 can be welded with other pipeline structures mainly made of the first metal by the flame welding gun. When the main material of the filter element 1 comprises the second metal, the connection between the filter element 1 and the first pipeline 2 can also be brazed by using a tunnel furnace. The connection of the filter element 1 to the second line 3 can also be brazed in a tunnel furnace. Specifically, when the first metal is copper and the second metal is iron, the welding temperature (for example, 800 ℃) of the copper and the copper is lower than the welding temperature (for example, 1000 ℃) of the copper and the iron, and when the first pipeline 2 mainly made of copper is welded and connected with a pipeline structure mainly made of copper, a flame welding gun is used for welding; when the piping connecting sleeve 4 mainly made of copper is welded with the pipeline structure mainly made of copper, a flame welding gun is adopted for welding; the second pipeline 3 mainly made of iron and the filter element 1 mainly made of iron are brazed by adopting a tunnel furnace when being welded; and the second pipeline 3 mainly made of iron and the pipe connecting sleeve 4 mainly made of iron are welded by adopting tunnel furnace brazing.

The material of the second pipeline 3 is different from that of the first pipeline 2, the material of the piping connecting sleeve 4 is the same as that of the first pipeline 2, and when the piping component 10 is welded and connected with other pipeline structures, the piping connecting sleeve 4 and the first pipeline 2 are used as connecting pieces, and the welding performance of the connecting pieces plays a crucial role in the welding quality. The piping connecting sleeve 4 and the first pipeline 2 are made of the first metal with a lower melting point, so that the welding difficulty of the piping component 10 and other pipeline structures during welding can be reduced, and the welding convenience is improved. Meanwhile, the second pipeline 3 is made of the second metal, and when the cost of the second metal is lower than that of the first metal, the overall cost of the piping assembly 10 can be reduced.

And the thermal conductivity of the first metal is higher than the thermal conductivity of the second metal. Thus, the second pipeline 3 mainly made of the second metal has good heat insulation performance, and the first pipeline 3 mainly made of the first metal needs a professional heat insulation layer, otherwise, heat energy is wasted too much. The heat conductivity coefficient of the second pipeline 3 is low, and the use of a heat insulation layer can be saved.

According to the utility model discloses a piping subassembly 10 of embodiment, first pipeline 2 are the copper pipe, and piping adapter sleeve 4 is the copper sheathing, and second pipeline 3 is nonrust steel pipe, and filter element 1's casing is the stainless steel shell, and first pipeline 2 all adopts the tunnel furnace brazing with being connected of filter element 1, second pipeline 3 and piping adapter sleeve 4.

When the second pipeline 3 is used as a heat exchange pipe, a thin-wall stainless steel pipe with the wall thickness of 0.5mm-0.8mm can be adopted, and the heat transfer coefficient of the stainless steel pipe is improved by 2.121% -8.408% compared with that of a copper pipe under the same heat exchange area, so that compared with an all-copper pipeline, the heat exchange performance of the whole piping assembly 10 can be improved after the second pipeline 3 adopts the stainless steel pipe. It should be noted that the heat transfer coefficient is related to the heat conductivity coefficient of the pipeline itself and the heat exchange coefficient between the pipeline and the external medium, and the higher the heat transfer coefficient is, the better the heat exchange performance is.

And the heat conductivity coefficient of the thin-wall stainless steel pipe is about 1/23 of the copper pipe, the heat insulation performance of the stainless steel pipe is good, the copper pipe needs a professional heat insulation layer, and otherwise, the heat energy waste is too large. The second pipeline 3 is a stainless steel pipe, so that the use of a heat insulation layer can be saved.

In addition, stainless steel has corrosion resistance greater than copper. The stainless steel pipe can perform passivation with an oxidant to form a layer of protective film on the surface to effectively prevent oxidation, the passivation capability of the copper pipe is small, the corrosion resistance is poor, harmful substances can be separated out after corrosion, the welded junction of the copper pipe cannot be subjected to solid solution, acid pickling and passivation on the construction site, and the corrosion prevention of the welded junction inside the pipeline is difficult to perform, so that the welded junction is easy to corrode. The second pipe 3 is a stainless steel pipe, and the corrosion resistance of the entire piping assembly 10 can be improved.

Alternatively, the second pipe 3 is a stainless alloy steel pipe of SUS304L, whereby the second pipe 3 has a high hardness and the rigidity of the second pipe 3 is significantly improved, so that the pipe assembly 10 can be made strong in impact resistance and vibration resistance.

The price of the stainless steel pipe is lower than that of the copper pipe, the service life of the stainless steel pipe is longer, and the replacement and comprehensive cost of the copper pipe is 2-4 times that of the stainless steel pipe. By designing the second pipeline 3 as a stainless steel pipe, the overall cost of the piping assembly 10 can be saved. According to the utility model discloses piping subassembly 10, it forms to adopt the lower first metal of melting point to make with first pipeline 2 and piping adapter sleeve 4, make things convenient for piping subassembly 10 to carry out welded connection with other pipeline structures, and simultaneously, the second metal is selected to the material of second pipeline 3, through the kind of the first metal of reasonable selection and second metal, can improve piping subassembly 10's heat transfer performance, corrosion resisting property, shock resistance and vibration resistance, and be favorable to reducing piping subassembly 10's cost.

In some embodiments, the second metal has a lower thermal conductivity than the first metal, which may reduce the use of insulation.

In some embodiments, the second metal is less costly than the first metal, which may reduce the overall cost of the piping assembly 10.

In some embodiments, the strength and stiffness of the second metal is higher than the strength and stiffness of the first metal, which may provide piping assembly 10 with high shock resistance and vibration resistance.

In some embodiments, the corrosion resistance of the second metal is greater than the corrosion resistance of the first metal, which may improve the corrosion resistance of the pipe assembly 10 as a whole.

Referring to fig. 1 to 10, a piping device 100 according to an embodiment of the second aspect of the present invention may include a first valve body 20, a second valve body 30, and the piping assembly 10 of the above embodiment, where the first valve body 20 includes a valve body 201, a connection pipe 201, and a connection pipe connection sleeve 203, the valve body 201 has a valve body cavity inside, and the connection pipe 201 is connected to the valve body 201, and optionally, the connection pipe 201 and the valve body 201 may be integrally formed, or may be welded and fixed. The connecting pipe connecting sleeve 203 is fixed with the connecting pipe 201, and the connecting pipe 201 and the connecting pipe connecting sleeve 203 are both provided with channels communicated with the valve body cavity, so that when the first valve body 20 is connected with other pipelines, the other pipelines and the valve body cavity can realize the circulation of internal media through the connecting pipe 201 and the connecting pipe connecting sleeve 203.

The number of the connection pipes 201 is related to the number of passages of the first valve body 20, for example, when the connection pipes 201 are two, the first valve body 20 is a two-way valve; when the number of the connection pipes 201 is three, the first valve body 20 is a three-way valve; when the number of the connection pipes 201 is four, the first valve body 20 is a four-way valve. That is, when the number of the connection pipes 201 is N, the first valve body 20 is an N-way valve, and N is greater than or equal to 2.

In some embodiments, the accessory hose assembly 10 may be connected to one of the adapter tubes 201, as shown in fig. 2-3, 7-9.

In alternative embodiments, each adapter 201 may have a corresponding accessory hose assembly 10 attached thereto.

In other alternative embodiments, a portion of the connection pipes 201 are connected to the corresponding pipe assembly 10, and the other connection pipes 201 are connected to other pipelines.

The material of the adapter 201 comprises a second metal, when the second metal is iron, the main material of the adapter 201 comprises iron, and may also comprise other materials, such as carbon, to form the adapter 201 as a steel tube, optionally the adapter 201 being a stainless steel tube. Of course, the adapter 201 may also be a pure iron pipe.

The material of the adapter connecting sleeve 203 comprises a first metal, when the first metal is copper, the main material of the adapter connecting sleeve 203 comprises copper, and may also comprise other materials, of course, the adapter connecting sleeve 203 may also be a pure copper sleeve.

The material of the second valve body 30 comprises a first metal, and similarly, when the first metal is copper, the main material of the second valve body 30 comprises copper, and may comprise other materials, of course, the second valve body 30 may also be a pure copper valve body. The second valve body 30 is welded and fixed to the pipe connection sleeve 4.

The connecting pipe connecting sleeve 203 is directly or indirectly welded and fixed with the first pipeline 2 to realize the connection of the first valve body 20 and the piping assembly 10.

In some embodiments of the present invention, as shown in fig. 2 to 5, the connection pipe connection sleeve 203 is directly welded and fixed to the first pipeline 2. The main materials of the connecting pipe connecting sleeve 203 and the first pipeline 2 both comprise the first metal, so that the welding temperature required when the connecting pipe connecting sleeve 203 is welded with the first pipeline 2 is low, and the welding operation of the connecting pipe connecting sleeve 203 and the first pipeline 2 can be completed in an assembly workshop, that is, an operator can complete the welding fixation of the connecting pipe connecting sleeve 203 and the first pipeline 2 by using a flame welding gun.

In some embodiments of the present invention, referring to fig. 7 to 10, the connecting pipe connecting sleeve 203 is welded and fixed to the first pipeline 2 indirectly.

Specifically, referring to fig. 7-10, the pipeline device 100 may further include a third pipeline 40, and the material of the third pipeline 40 includes the first metal, and similarly, when the first metal is copper, the main material of the third pipeline 40 includes copper, and may also include other materials, and of course, the third pipeline 40 may also be a pure copper pipe. The connecting pipe connecting sleeve 203 is welded and fixed with one end of the third pipeline 40, and the first pipeline 2 is welded and fixed with the other end of the third pipeline 40, so that the connecting pipe connecting sleeve 203 and the first pipeline 2 are indirectly welded and fixed through the third pipeline 40.

The main materials of the third pipeline 40, the connecting pipe connecting sleeve 203 and the first pipeline 2 all comprise first metal, so that the welding temperature required when the connecting pipe connecting sleeve 203 and the third pipeline 40 and the first pipeline 2 and the third pipeline 40 are welded is low, so that the welding operation of the connecting pipe connecting sleeve 203 and the third pipeline 40 and the welding operation of the first pipeline 2 and the third pipeline 40 can be completed in an assembly workshop, that is, an operator can complete the welding fixation of the connecting pipe connecting sleeve 203 and the third pipeline 40 and the welding fixation of the first pipeline 2 and the third pipeline 40 by using a flame welding gun.

Further, as shown with reference to fig. 9-10, the first pipeline 2 may include a straight tube section 21, a transition section 23, and a flared section 22, the straight tube section 21 and the flared section 22 are each configured as a tube-shaped structure, the diameter of the flared section 22 is larger than that of the straight tube section 21, and the flared section 22 and the straight tube section 21 are connected by the transition section 23. In other words, the flared section 22 is connected to one end of the transition section 23, the straight section 21 is connected to the other end of the transition section 23, and the transition section 23 may be configured as a tapered annular structure. The straight section 21 is inserted into the first port 11 and the third conduit 40 is inserted into the flared section 22.

Optionally, a third conduit 40 is inserted at the junction of the flared section 22 and the transition section 23, as shown in FIG. 10. In this way, the transition section 23 can form a positioning stop for the end of the third pipeline 40, so that the relative position relationship between the third pipeline 40 and the first pipeline 2 is accurate.

In some embodiments of the present invention, the first valve body 20 is a four-way valve, i.e. the number of the connection pipes 202 is four.

In some embodiments of the present invention, the second valve body 30 is a stop valve.

A piping device 100 according to a specific example of the present invention is described below with reference to fig. 1 to 5.

The pipeline device 100 comprises a four-way valve 20, a stop valve 30 and the piping assembly 10 of the above embodiment, the piping assembly 10 comprises a filter element 1, a copper pipe 2, a stainless steel pipe 3 and a copper sleeve 4, the filter element 1 has a first interface 11 and a second interface 12, and the connection of the copper pipe 2 and the first interface 11 of the filter element 1, the connection of the stainless steel pipe 3 and the second interface 12 of the filter element 1, and the connection of the stainless steel pipe 3 and the copper sleeve 4 are all brazed by a tunnel furnace. The four-way valve 20 comprises a valve body 201 and four connecting pipes 201, wherein one connecting pipe 201 is connected with a copper sleeve 203, the copper sleeve 203 and the copper pipe 2 are welded and fixed by a flame welding gun, and the copper sleeve 4 and the stop valve 30 are welded and fixed by a flame welding gun.

A piping device 100 according to a specific example of the present invention is described below with reference to fig. 6 to 10.

Pipeline device 100 includes four-way valve 20, stop valve 30, copper pipe 40 and piping assembly 10 of the above-mentioned embodiment, and piping assembly 10 includes filter element 1, copper pipe 2, stainless steel pipe 3 and copper sheathing 4, and filter element 1 has first interface 11 and second interface 12, and copper pipe 2 includes staight barrel section 21, changeover portion 23 and flaring section 22, and the diameter of flaring section 22 is greater than the diameter of staight barrel section 21, and flaring section 22 passes through changeover portion 23 with staight barrel section 21 and is connected. The connection between the straight section 21 of the copper pipe 2 and the first interface 11 of the filter element 1, the connection between the stainless steel pipe 3 and the second interface 12 of the filter element 1, and the connection between the stainless steel pipe 3 and the copper sleeve 4 are all brazed by adopting a tunnel furnace. The four-way valve 20 comprises a valve body 201 and four connecting pipes 201, wherein one connecting pipe 201 is connected with a copper sleeve 203, one end of a copper pipe 40 is inserted into the copper sleeve 203 and is welded and fixed with the copper sleeve 203 by using a flame welding gun, one end of the copper pipe 40 is inserted into the joint of the flared section 22 and the transition section 23, the copper pipe 40 and the flared section 22 are welded and fixed by using a flame welding gun, and the copper sleeve 4 and the stop valve 30 are welded and fixed by using a flame welding gun.

Referring to fig. 11, a refrigeration system 1000 according to an embodiment of the present invention includes the pipeline apparatus 100 of the above embodiment. The refrigeration system 1000 may be applied to an air conditioner, a refrigerator, or other devices having a refrigeration function.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

While embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A piping assembly, comprising:

a filter element having a first interface and a second interface;

the first pipeline is connected with the first interface, and the material of the first pipeline comprises a first metal;

a second pipe connected to the second port, the second pipe being made of a second metal;

the pipe connecting sleeve is connected to one end, far away from the filtering element, of the second pipeline, the pipe connecting sleeve is made of the first metal, and the melting point of the first metal is lower than that of the second metal.

2. The accessory piping assembly of claim 1, wherein the first metal is copper and/or the second metal is iron.

3. A pipeline apparatus, comprising:

the piping assembly of any of claims 1-2;

the first valve body comprises a connecting pipe and a connecting pipe connecting sleeve, the connecting pipe connecting sleeve is fixed with the connecting pipe, the connecting pipe connecting sleeve is made of the first metal, and the connecting pipe connecting sleeve is directly or indirectly welded and fixed with the first pipeline;

and the material of the second valve body comprises the first metal, and the second valve body is welded and fixed with the distribution pipe connecting sleeve.

4. A pipeline apparatus according to claim 3, wherein the connecting pipe connecting sleeve is directly welded and fixed with the first pipeline.

5. The line set of claim 3 wherein the adapter connector is welded indirectly to the first line.

6. The line set of claim 5, further comprising: and the material of the third pipeline comprises the first metal, the connecting pipe connecting sleeve is welded and fixed with one end of the third pipeline, and the first pipeline is welded and fixed with the other end of the third pipeline.

7. The conduit arrangement according to claim 6, wherein the first conduit includes a straight cylindrical section and a flared section, the flared section having a diameter greater than a diameter of the straight cylindrical section, and the flared section being connected to the straight cylindrical section by a transition section, the straight cylindrical section being inserted into the first interface, the third conduit being inserted into the flared section.

8. The conduit device according to claim 7, wherein the third conduit is inserted to a junction of the flared section and the transition section.

9. The line set of claim 3, wherein the first valve body is a four-way valve and/or the second valve body is a shut-off valve.

10. A refrigeration system comprising a pipeline apparatus as claimed in any one of claims 3 to 9.