CN219453164U - Pipeline connecting assembly and air conditioner - Google Patents

Abstract

The application provides a pipe connection subassembly and air conditioner. The pipeline connecting assembly comprises a pipe connecting piece, a pipe nut, an elastic washer and a connecting pipe, wherein the pipe connecting piece is provided with a channel communicated with the connecting pipe, and the outer surface of the channel is provided with external threads; the pipe nut is provided with a stepped hole, the stepped hole is formed by a first through hole and a second through hole which are coaxially arranged, the diameter of the second through hole is smaller than that of the first through hole, and one end, far away from the second through hole, of the inner surface of the first through hole is provided with an internal thread; the elastic washer and the pipe nut are sequentially sleeved on the connecting pipe from inside to outside, the internal thread of the pipe nut is in threaded connection with the external thread of the pipe connecting piece, and the elastic washer is abutted on the stepped surface of the stepped hole. The utility model discloses a make the pipe nut produce the expend with heat and contract with cold when homoenergetic keeps locking state under the elastic force of elastic washer at vibration and connecting pipe, can not take place not hard up to guaranteed the leakproofness of junction of connecting pipe and tube coupling spare, avoided taking place to leak.

Description

Pipeline connecting assembly and air conditioner

Technical Field

The application belongs to the pipe connection accessory field, especially relates to a pipe connection subassembly and air conditioner.

Background

The indoor unit and the outdoor unit of the split air conditioner are respectively arranged indoors and outdoors, the middle is connected with wires through a pipeline, the pipeline is used for circulation of refrigerant, one end of the pipeline is connected with a stop valve of the outdoor unit, and the other end of the pipeline is connected with a pipe joint of the indoor unit. Because the air conditioner continuously vibrates in the running process, and meanwhile, the pipeline is subjected to expansion caused by temperature change and contraction caused by temperature change, after the time is long, the joint of the pipeline is loosened, so that the refrigerant is leaked, and the air conditioner cannot refrigerate or heat.

Disclosure of Invention

The embodiment of the application provides a pipeline connecting assembly and an air conditioner to solve the problem that refrigerant is revealed easily to the pipeline junction of current air conditioner.

In a first aspect, an embodiment of the present application provides a pipe connection assembly, including a pipe connection member, a pipe nut, an elastic washer, and a connection pipe, where the pipe connection member is provided with a channel communicating with the connection pipe, and an external thread is provided on an outer surface of the channel; the pipe nut is provided with a stepped hole, the stepped hole is formed by a first through hole and a second through hole which are coaxially arranged, the diameter of the second through hole is smaller than that of the first through hole, and one end, far away from the second through hole, of the inner surface of the first through hole is provided with an internal thread; the elastic washer and the pipe nut are sequentially sleeved on the connecting pipe from inside to outside, the internal thread of the pipe nut is in threaded connection with the external thread of the pipe connecting piece, and the elastic washer is abutted to the stepped surface of the stepped hole.

Optionally, the pipe connection assembly further comprises a protection sleeve, the hardness of the protection sleeve is greater than that of the connection pipe, and the protection sleeve, the elastic washer and the pipe nut are sequentially sleeved on the protection sleeve from inside to outside.

Optionally, the outer surface of the channel is provided with a first conical surface, the inner surface of the elastic gasket is provided with a second conical surface, the connecting pipe is provided with a first conical opening, one end of the protecting sleeve is provided with a second conical opening, and the diameters of the first conical opening and the second conical opening are gradually increased towards the direction close to the pipe connecting piece; the inner surface of the first conical opening is attached to the first conical surface, the outer surface of the first conical opening is attached to the inner surface of the second conical opening, and the outer surface of the second conical opening is attached to the second conical surface.

Optionally, the protection sleeve is a member made of brass or stainless steel, and the connecting pipe is a member made of red copper.

Optionally, the elastic gasket is provided with a slit, and the elastic gasket is spiral in a free state.

Alternatively, the elastic washer is a member made of brass or stainless steel.

Alternatively, the tube nut is a member made of brass or stainless steel

Optionally, an annular tool retracting groove coaxial with the first through hole is formed in the inner surface of the first through hole, and the annular tool retracting groove is located between the internal thread and the elastic washer.

In a second aspect, embodiments of the present application also provide an air conditioner including the pipe connection assembly as described above.

Optionally, the air conditioner further comprises an air conditioner indoor unit and an air conditioner outdoor unit, and the air conditioner indoor unit is connected with the air conditioner outdoor unit through the pipeline connecting assembly.

Optionally, the pipe connecting piece in the pipe connecting assembly comprises a stop valve of the air conditioner outdoor unit and a pipe joint of the air conditioner indoor unit, and two ends of the connecting pipe in the pipe connecting assembly are respectively connected with the stop valve and the pipe joint.

The embodiment of the application provides a pipe connection subassembly and air conditioner is through setting up elastic washer between pipe nut and pipe connection spare to make the internal thread of pipe nut and the external screw thread threaded connection of pipe connection spare, elastic washer butt is on the step face of the shoulder hole of pipe nut, thereby pipe nut homoenergetic keeps locking state under elastic force of elastic washer when vibration and connecting pipe produce expend with heat and contract with cold, can not take place not hard up, has guaranteed the leakproofness of junction of connecting pipe and pipe connection spare, avoids taking place to leak.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort to a person skilled in the art.

For a more complete understanding of the present application and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings. Wherein like reference numerals refer to like parts throughout the following description.

Fig. 1 is a schematic view of a first structure of a pipe connection assembly according to an embodiment of the present application.

Fig. 2 is a schematic longitudinal cross-sectional view of the pipe coupling assembly of fig. 1.

Fig. 3 is an exploded view of the pipe coupling assembly of fig. 1.

Fig. 4 is a schematic view of a second structure of a pipe connection assembly according to an embodiment of the present application.

Fig. 5 is a schematic longitudinal cross-sectional view of the pipe coupling assembly of fig. 4.

Fig. 6 is a schematic view of the construction of the tube nut in the tube connection assembly of fig. 5.

Fig. 7 is an exploded view of the pipe coupling assembly of fig. 4.

Fig. 8 is a schematic structural diagram of an elastic gasket according to an embodiment of the present application.

Fig. 9 is a left side view of the spring washer shown in fig. 8.

Fig. 10 is a top view of the spring washer shown in fig. 8.

Fig. 11 is a schematic structural diagram of a protective sleeve according to an embodiment of the present application.

Fig. 12 is a schematic cross-sectional view of the protective sleeve shown in fig. 11 along A-A.

Reference numerals illustrate:

100. a pipe connection; 101. a channel; 102. an external thread; 103. a first conical surface; 104. an annular cutter retracting groove; 110. a stop valve; 120. a pipe joint; 200. a tube nut; 210. a stepped hole; 211. a first through hole; 212. a second through hole; 220. an internal thread; 300. an elastic washer; 310. a second conical surface; 320. cutting; 400. a connecting pipe; 410. a first tapered mouth; 500. a protective sleeve; 510. a second tapered mouth.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

The embodiment of the application provides a pipeline connecting assembly, as shown in fig. 1-10, the pipeline connecting assembly comprises a pipe connecting piece 100, a pipe nut 200, an elastic washer 300 and a connecting pipe 400, wherein the pipe connecting piece 100 is provided with a channel 101 communicated with the connecting pipe 400, and the outer surface of the channel 101 is provided with external threads 102; the pipe nut 200 is provided with a stepped hole 210, the stepped hole 210 is formed by a first through hole 211 and a second through hole 212 which are coaxially arranged, the diameter of the second through hole 212 is smaller than that of the first through hole 211, and one end, far away from the second through hole 212, of the inner surface of the first through hole 211 is provided with an internal thread 220; the elastic washer 300 and the pipe nut 200 are sequentially sleeved on the connecting pipe 400 from inside to outside, the internal thread 220 of the pipe nut 200 is in threaded connection with the external thread 102 of the pipe connector 100, and the elastic washer 300 abuts against the stepped surface of the stepped hole 210.

According to the pipeline connecting assembly, the elastic gasket 300 is arranged between the pipe nut 200 and the pipe connecting piece 100, the internal thread 220 of the pipe nut 200 is in threaded connection with the external thread 102 of the pipe connecting piece 100, the elastic gasket 300 is abutted to the stepped surface of the stepped hole 210 of the pipe nut 200, and accordingly the pipe nut 200 can keep a locking state under the elastic acting force of the elastic gasket 300 when vibration and expansion caused by heat and contraction caused by cold caused by the connecting pipe 400, looseness cannot occur, the tightness of the connecting part of the connecting pipe 400 and the pipe connecting piece 100 is guaranteed, and leakage is avoided. It can be appreciated that the pipeline connecting assembly provided by the embodiment of the application is convenient to use, the problems of welding or cutting and maintaining the pipeline in the past are avoided, the components are convenient to install and maintain, the time is greatly saved for pipeline construction, and the construction efficiency is improved.

Alternatively, the tube nut 200 is a member made of brass or stainless steel, i.e., the tube nut 200 may be made of brass or stainless steel (e.g., 304 stainless steel or 316 stainless steel), and both the brass and stainless steel are not easily corroded, thus enabling the service life of the tube nut 200 to be extended.

Alternatively, as shown in fig. 2, 5 and 6, the inner surface of the first through hole 211 is provided with an annular relief groove 104 coaxial with the first through hole 211, and the annular relief groove 104 is located between the internal thread 220 and the elastic washer 300. When the pipe nut 200 is processed, the annular tool retracting groove 104 is firstly turned on the inner surface of the first through hole 211 of the internal thread 220 to be turned, and then the internal thread 220 can be turned well through a thread cutter, so that the processing difficulty is reduced.

In some embodiments of the present application, as shown in fig. 8-10, the slit 320 is formed on the elastic washer 300, and the elastic washer 300 is spiral in a free state (i.e., a loose state), so that the elastic washer 300 has better elasticity, thereby effectively ensuring that the tube nut 200 can maintain a locked state under the elastic force of the elastic washer 300 without loosening. Specifically, as shown in the figure, when the pipe is connected by screwing the pipe nut 200 onto the external thread 102 of the pipe connector 100, the profiled elastic washer 300 is deformed by the pre-tightening force of the pipe nut 200, and is deformed from a spiral shape to a nearly flat shape, but is held by elastic force.

The spring washer is suitably made of a material that does not chemically react with the connection tube 400. Alternatively, the elastic washer 300 is a member made of brass or stainless steel, that is, the elastic washer 300 may be made of brass or stainless steel (e.g. 304 stainless steel or 316 stainless steel), and both the brass and the stainless steel are not easy to corrode, so that the service life of the elastic washer 300 can be prolonged, and the elastic force of the elastic washer 300 is kept from being attenuated for more than 10 years.

The pretightening force may be excessively large when the pipe nut 200 is installed (the pipe nut 200 is easily torqued too much when the experience of an installer is insufficient), resulting in the pipe orifice of the connection pipe 400 (i.e., the portion connected to the pipe connection 100), the pipe orifice of the connection pipe 400 being severely deformed by pressure, the pipe orifice being thinned and uneven, and the strength being reduced after a long time, cracks occurring to form leakage points. To solve this problem, as shown in fig. 1 to 7, 11 and 12, the pipe coupling assembly provided in the embodiment of the present application further includes a protection sleeve 500, the protection sleeve 500 having a hardness greater than that of the coupling pipe 400, and the protection sleeve 500, the elastic washer 300 and the pipe nut 200 are sequentially sleeved on the protection sleeve 500 from inside to outside. The main function of the protection sleeve 500 is to protect the nozzle of the connection pipe 400 from being deformed by the excessive pre-tightening force of the pipe nut 200, thereby ensuring that the contact surface of the nozzle of the connection pipe 400 and the pipe connection piece 100 is more sufficient and even in stress.

Alternatively, as shown in fig. 2, 5, 8, 9 and 12, the outer surface of the channel 101 of the pipe connector 100 is provided with a first tapered surface 103, the inner surface of the elastic washer 300 is provided with a second tapered surface 310, the connecting pipe 400 is provided with a first tapered opening 410, one end of the protection sleeve 500 is provided with a second tapered opening 510, and the diameters of the first tapered opening 410 and the second tapered opening 510 are gradually increased towards the direction approaching the pipe connector 100 (i.e. the second tapered opening 510 and the first tapered opening 410 are both in a bell mouth structure); the inner surface of the first tapered mouth 410 conforms to the first tapered surface 103, the outer surface of the first tapered mouth 410 conforms to the inner surface of the second tapered mouth 510, and the outer surface of the second tapered mouth 510 conforms to the second tapered surface 310. The above structure enables the pipe connector 100 and the connecting pipe 400 to form a bell mouth connection structure, the bell mouth connection is a very convenient and quick connection mode, and the pipe connection efficiency can be improved; the protection sleeve 500 may protect the flare (i.e., the first tapered mouth 410) of the connection tube 400 from being crushed and deformed by the tube nut 200 when the nut pre-tightening force is excessive, to ensure that the flare of the connection tube 400 is more sufficiently contacted with the first tapered surface 103 of the tube connection 100 and is uniformly stressed.

Optionally, the protection sleeve 500 is a member made of brass or stainless steel, the connection tube 400 is a member made of copper, that is, the material of the connection tube 400 may be copper, and the material of the protection sleeve 500 may be brass or stainless steel (for example, 304 stainless steel or 316 stainless steel), and the hardness of the brass and the stainless steel are both greater than that of copper, so that the protection sleeve 500 can protect the connection tube 400 from being crushed and deformed by the tube nut 200 when the pretightening force of the tube nut 200 is too large, and the brass and the stainless steel are not easy to corrode, so that the service life of the protection sleeve 500 can be prolonged.

Specifically, the assembly method of the pipe connection assembly is as follows: one end of the connection pipe 400 is abutted against the opening of the passage 101 of the pipe connection piece 100, then the protection sleeve 500, the elastic washer 300 and the pipe nut 200 are sequentially sleeved on one end of the connection pipe 400 from inside to outside, and finally the internal thread 220 of the pipe nut 200 is in threaded connection with the external thread 102 of the pipe connection piece 100 (i.e. the pipe nut 200 is screwed on the external thread 102 of the pipe connection piece 100 for fixing). It should be noted that, when the protection sleeve 500 needs to be provided with the second tapered opening 510 and the connection tube 400 needs to be provided with the first tapered opening 410, the protection sleeve 500, the elastic washer 300 and the tube nut 200 need to be sleeved on the connection tube 400 in advance before the protection sleeve 500 and the connection tube 400 are sleeved with the bell mouth, and then the bell mouth is simultaneously pressed on the protection sleeve 500 and the connection tube 400 (the bell mouth on the protection sleeve 500 is the second tapered opening 510 and the bell mouth on the connection tube 400 is the first tapered opening 410), otherwise the protection sleeve 500, the elastic washer 300 and the tube nut 200 cannot be sleeved on the connection tube 400.

The leakage of refrigerant is easy to occur at the pipeline connection part of the existing air conditioner, and two reasons for the leakage are as follows: 1. when the air conditioner runs, the compressor vibrates greatly, the pipeline also vibrates, after the time is long, the fastener at the pipeline joint is loosened due to vibration, and leakage occurs due to loosening of the pipeline joint; 2. in the running process of the air conditioner, the temperature change range of the pipeline is very large, particularly, the periodic defrosting of the cold-warm air conditioner occurs when the air conditioner heats, the pipeline joint is required to bear very large cold-hot impact (fluctuation of minus 10 ℃ to 85 ℃ within 2 minutes), and the fastener at the pipeline joint is loosened due to the effect of heat expansion and cold contraction of materials due to the frequent cold-hot impact, so that the refrigerant leaks.

In order to solve the problem that refrigerant leakage easily occurs at a pipeline connection part of the existing air conditioner, the embodiment of the application also provides an air conditioner, and the air conditioner comprises a pipeline connection assembly, wherein the specific structure of the pipeline connection assembly refers to the embodiment. Since the elastic washer 300 in the pipe connection assembly is always kept elastic, it is possible to ensure that the pipe nut 200 is always kept in a locked state under the elastic force of the elastic washer 300 when vibration and thermal expansion and contraction of the connection pipe 400 are alternately generated, and no looseness occurs, thereby ensuring the sealability of the connection part of the connection pipe 400 and the pipe connection piece 100, and preventing the leakage of refrigerant at the connection part of the connection pipe 400 and the pipe connection piece 100.

It can be understood that, because the air conditioner adopts all the technical schemes of all the embodiments, the air conditioner has at least all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted herein.

In some embodiments of the present application, the air conditioner further includes an air conditioner indoor unit and an air conditioner outdoor unit, which are connected by a pipe connection assembly. In other words, the air conditioner may be a split type air conditioner including an air conditioner indoor unit and an air conditioner outdoor unit respectively provided indoors and outdoors, which are connected through a pipe connection assembly to circulate a refrigerant.

Alternatively, as shown in connection with fig. 1 to 7, the pipe connection member 100 in the pipe connection assembly includes a shut-off valve 110 of an air conditioner outdoor unit and a pipe joint 120 of an air conditioner indoor unit, and both ends of the connection pipe 400 in the pipe connection assembly are connected to the shut-off valve 110 and the pipe joint 120, respectively. Specifically, when installing an air conditioner, one end of the connection pipe 400 is installed on the stop valve 110 of the outdoor unit of the air conditioner, as shown in fig. 1 to 3, the assembly mode is that firstly, one end of the connection pipe 400 is abutted against the opening of the channel 101 of the stop valve 110, then, the protection sleeve 500, the elastic washer 300 and the pipe nut 200 are sequentially sleeved on one end of the connection pipe 400 from inside to outside, and finally, the internal thread 220 of the pipe nut 200 is in threaded connection with the external thread 102 of the stop valve 110 (i.e. the pipe nut 200 is screwed on the external thread 102 of the stop valve 110 for fixing); the other end of the connection pipe 400 is mounted on the pipe joint 120 of the indoor unit of the air conditioner, as shown in fig. 4, 5 and 7, in a specific assembly manner: one end of the connection pipe 400 is abutted against the opening of the passage 101 of the pipe joint 120, then the protection sleeve 500, the elastic washer 300 and the pipe nut 200 are sequentially sleeved on the other end of the connection pipe 400 from inside to outside, and finally the internal thread 220 of the pipe nut 200 is in threaded connection with the external thread 102 of the pipe joint 120 (i.e. the pipe nut 200 is screwed on the external thread 102 of the pipe joint 120 for fixing).

It will be appreciated that the pipe connection assembly provided in the embodiments of the present application may also be applied to the connection of central air conditioning, other types of refrigeration systems, heating systems or other high pressure pipes.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

In the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first," "second," etc. may explicitly or implicitly include one or more features. The term "and/or" includes any and all combinations of one or more of the associated listed items.

The pipe connection assembly and the air conditioner provided by the embodiments of the present application are described in detail, and specific examples are applied to illustrate the principles and embodiments of the present application, and the description of the above embodiments is only used to help understand the method and core idea of the present application; meanwhile, as those skilled in the art will vary in the specific embodiments and application scope according to the ideas of the present application, the contents of the present specification should not be construed as limiting the present application in summary.

Claims (10)

1. The pipeline connecting assembly is characterized by comprising a pipe connecting piece (100), a pipe nut (200), an elastic gasket (300) and a connecting pipe (400), wherein the pipe connecting piece (100) is provided with a channel (101) communicated with the connecting pipe (400), and the outer surface of the channel (101) is provided with external threads (102); the pipe nut (200) is provided with a stepped hole (210), the stepped hole (210) is formed by a first through hole (211) and a second through hole (212) which are coaxially arranged, the diameter of the second through hole (212) is smaller than that of the first through hole (211), and one end, far away from the second through hole (212), of the inner surface of the first through hole (211) is provided with an internal thread (220);

the elastic washer (300) and the pipe nut (200) are sequentially sleeved on the connecting pipe (400) from inside to outside, the internal thread (220) of the pipe nut (200) is in threaded connection with the external thread (102) of the pipe connecting piece (100), and the elastic washer (300) is abutted to the stepped surface of the stepped hole (210).

2. The pipe coupling assembly of claim 1, further comprising a protective sleeve (500), wherein the protective sleeve (500) has a hardness greater than that of the coupling pipe (400), and wherein the protective sleeve (500), the elastic washer (300), and the pipe nut (200) are sequentially sleeved on the protective sleeve (500) from inside to outside.

3. The pipe coupling assembly according to claim 2, wherein the outer surface of the passage (101) is provided with a first tapered surface (103), the inner surface of the elastic washer (300) is provided with a second tapered surface (310), the connection pipe (400) is provided with a first tapered opening (410), one end of the protection sleeve (500) is provided with a second tapered opening (510), and the diameters of the first tapered opening (410) and the second tapered opening (510) are gradually increased towards a direction approaching the pipe coupling (100);

the inner surface of the first conical opening (410) is attached to the first conical surface (103), the outer surface of the first conical opening (410) is attached to the inner surface of the second conical opening (510), and the outer surface of the second conical opening (510) is attached to the second conical surface (310).

4. A pipe connection assembly according to claim 2, characterized in that the protective sleeve (500) is a member made of brass or stainless steel and the connection pipe (400) is a member made of red copper.

5. A pipe connection assembly according to any one of claims 1-4, wherein the resilient gasket (300) is provided with slits (320), the resilient gasket (300) being helical in the free state.

6. A pipe connection assembly according to claim 5, characterized in that the resilient washer (300) is a member made of brass or stainless steel.

7. A pipe connection assembly according to any one of claims 1 to 4, wherein the pipe nut (200) is a member made of brass or stainless steel;

and/or, an annular tool withdrawal groove (104) coaxial with the first through hole (211) is arranged on the inner surface of the first through hole (211), and the annular tool withdrawal groove (104) is positioned between the internal thread (220) and the elastic gasket (300).

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

9. The air conditioner of claim 8, further comprising an air conditioner indoor unit and an air conditioner outdoor unit, the air conditioner indoor unit and the air conditioner outdoor unit being connected by the pipe connection assembly.

10. An air conditioner according to claim 9, wherein the pipe connection member (100) in the pipe connection assembly includes a shut-off valve (110) of the air conditioner outdoor unit and a pipe joint (120) of the air conditioner indoor unit, and both ends of the connection pipe (400) in the pipe connection assembly are connected to the shut-off valve (110) and the pipe joint (120), respectively.