CN109084091B - Flow guide pipe assembly and water heater - Google Patents
Flow guide pipe assembly and water heater Download PDFInfo
- Publication number
- CN109084091B CN109084091B CN201810963123.3A CN201810963123A CN109084091B CN 109084091 B CN109084091 B CN 109084091B CN 201810963123 A CN201810963123 A CN 201810963123A CN 109084091 B CN109084091 B CN 109084091B
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- Prior art keywords
- joint
- water heater
- limiting sleeve
- wall
- positioning part
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L5/00—Devices for use where pipes, cables or protective tubing pass through walls or partitions
- F16L5/02—Sealing
Abstract
The invention discloses a flow guide pipe assembly and a water heater, wherein the flow guide pipe assembly comprises: the connector is characterized in that a first fixing part is arranged on the inner wall of the connector; and the limiting sleeve is sleeved in the joint, a second fixing part corresponding to the first fixing part is arranged on the limiting sleeve, and the first fixing part and the second fixing part are in interference fit so that the limiting sleeve is fixed in the joint. This application converts the interference fit of the big curved surface of stop collar and joint inner wall, big distance into the cooperation of first fixed part and the little area of second fixed part, little distance, and greatly reduced assembly friction realizes the assembly of the little dynamics of water pipe, solves water pipe assembly difficulty, and the inboard porcelain that explodes of mouth of pipe, takes off the unusual problem of porcelain quality.
Description
Technical Field
The invention relates to the technical field of water heaters, in particular to a flow guide pipe assembly and a water heater.
Background
At present, a flow guide pipe assembly of a heat pump water heater mainly comprises a joint, a water inlet pipe, a water outlet pipe, a sealing gasket and the like, and the joint is welded on the surface of a liner shell body firstly, and then the water inlet pipe and the water outlet pipe are assembled in a mode of inserting the joint. The outer peripheral face of water pipe stop collar and joint inner wall adopt large tracts of land, long distance interference fit section to seal, and the staff need strike the hammer assembly pole violently with the help of external force and just can get into business turn over water pipe joint with business turn over water pipe forced assembly in, and operation intensity of labour is big, beats the dynamics uncontrollable, and the production process discovery has the phenomenon that porcelain, porcelain take off that leads to because of the assembly appears in the inboard porcelain layer of mouth of pipe.
Disclosure of Invention
In order to solve the technical problems, the invention discloses a flow guide pipe assembly and a water heater, and solves the problems of large friction force and difficulty in assembly during assembly.
According to one aspect of the present invention, there is disclosed a draft tube assembly comprising: the connector is characterized in that a first fixing part is arranged on the inner wall of the connector; and the limiting sleeve is sleeved in the joint, a second fixing part corresponding to the first fixing part is arranged on the limiting sleeve, and the first fixing part and the second fixing part are in interference fit so that the limiting sleeve is fixed in the joint.
Further, the first fixing part comprises a fixing boss arranged along the circumferential direction of the inner wall of the joint; the second fixing part comprises a limiting rib arranged on the outer wall of the limiting sleeve.
Furthermore, a first positioning part is also arranged on the inner wall of the joint; a second positioning part is arranged on the outer wall of the limiting sleeve corresponding to the first positioning part; the first positioning part is matched with the second positioning part.
Furthermore, a notch is arranged on the first fixing part, and the notch forms the first positioning part; the second positioning part is a positioning bulge matched with the notch.
Furthermore, the limiting ribs of the limiting sleeve are annular limiting ribs; the fixed boss is an annular fixed boss, and the annular limiting ribs correspond to the annular fixed boss.
Further, the minimum diameter of the limiting rib is larger than the inner diameter of the fixing boss.
Furthermore, the limiting ribs are arranged to be strip-shaped ribs, and the extending direction of the limiting ribs is parallel to the axis direction of the limiting sleeve or the pipe body.
Further, the cross-sectional shape of the spacing ribs includes, but is not limited to, circular, semicircular, oval, diamond, or trapezoidal.
According to another aspect of the invention, a water heater is disclosed, comprising the above-mentioned draft tube assembly.
Further, the joint is provided with a first end and a second end which are oppositely arranged, and the first end of the joint corresponds to the mounting opening on the inner container wall of the water heater; the limiting sleeve comprises a first axial section and a second axial section, wherein the first axial section is located inside the joint, the second axial section corresponds to the position of the mounting opening, and the diameter of the second axial section is smaller than that of the mounting opening.
Further, the connection part of the second axial section and the first axial section forms a step structure, and the outer edge of the step structure is provided with a guide inclined plane.
Further, the water heater also comprises a water pipe, and the first end of the water pipe is fixedly arranged in the limiting sleeve.
Further, be provided with the chucking arch along circumference on the water pipe inner wall, the chucking arch is used for closely cooperating with the assembly pole.
Further, the clamping protrusion is located in the joint, and the clamping protrusion is close to the first end of the joint.
Furthermore, a groove is formed in the position, corresponding to the clamping protrusion, of the outer wall of the water pipe, a fixing protrusion corresponding to the groove is arranged on the limiting sleeve, and the fixing protrusion is clamped in the groove.
Further, a sealing gasket is arranged between the limiting sleeve and the joint.
Further, stop collar with water pipe integrated into one piece.
Furthermore, a first positioning part is also arranged on the inner wall of the joint; a second positioning part is arranged on the outer wall of the limiting sleeve corresponding to the first positioning part; the first positioning part is matched with the second positioning part to position the installation direction of the water pipe.
This application converts the interference fit of the big curved surface of stop collar and joint inner wall, big distance into the cooperation of first fixed part and the little area of second fixed part, little distance, and greatly reduced assembly friction realizes the assembly of the little dynamics of water pipe, solves water pipe assembly difficulty, and the inboard porcelain that explodes of mouth of pipe, takes off the unusual problem of porcelain quality.
Drawings
FIG. 1 is a schematic structural view of a nozzle assembly according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
FIG. 3 is a schematic structural view of a stop collar of a draft tube assembly according to an embodiment of the invention;
FIG. 4 is a schematic structural diagram of a first fixing portion of a flow guide tube assembly according to an embodiment of the present invention;
FIG. 5 is a schematic view of a stop collar of a draft tube assembly according to another embodiment of the present invention;
legend: 10. a joint; 11. a first fixed part; 12. a first positioning portion; 20. a limiting sleeve; 21. a second fixed part; 22. a second positioning portion; 30. a water pipe; 31. clamping the bulge; 40. a gasket; 50. the inner container wall; 51. and (7) installing the opening.
Detailed Description
The present invention is further illustrated by the following examples, but is not limited to the details of the description.
The invention discloses a flow guide pipe assembly, which comprises: the water pipe joint comprises a joint 10, a limiting sleeve 20 and a water pipe 30, wherein a first fixing part 11 is arranged on the inner wall of the joint 10; the stop collar 20 is sleeved in the joint 10, the stop collar 20 is provided with a second fixing portion 21 corresponding to the first fixing portion 11, and the first fixing portion 11 and the second fixing portion 21 are in interference fit, so that the stop collar 20 is fixed in the joint 10. This application converts the interference fit of the big curved surface of stop collar and joint inner wall, big distance into the cooperation of first fixed part and the little area of second fixed part, little distance, and greatly reduced assembly friction realizes the assembly of the little dynamics of water pipe, solves water pipe assembly difficulty, and the inboard porcelain that explodes of mouth of pipe, takes off the unusual problem of porcelain quality.
In the above embodiment, the first fixing portion 11 includes the fixing boss provided along the circumferential direction of the inner wall of the joint 10; the second fixing portion 21 includes ribs provided on an outer wall of the position-restricting sleeve 20. The small interference fit of the small-area and small-distance ribs and the fixed bosses is adopted, so that the friction resistance during the assembly of the water pipe is reduced, and the small-force assembly of the water pipe is realized.
When the existing water pipe is assembled, the inner side of the joint is not provided with an obvious positioning structure, and the assembling direction of the water pipe is easy to be reversely assembled or inclined, so that the effective volume and the heat production capacity of the water tank are influenced. In order to solve the above problem, in the above embodiment, the inner wall of the joint 10 is further provided with the first positioning portion 12; a second positioning part 22 is arranged on the outer wall of the limiting sleeve 20 corresponding to the first positioning part 12; the first positioning portion 12 is engaged with the second positioning portion 22.
Through the cooperation of the first positioning part 12 and the second positioning part 22, the pipe body can be assembled and enter the joint 10 only in a specific orientation, which not only can avoid the reverse installation of the orientation of the pipe body, but also can realize the precise positioning and prevent the rotation or deflection of the water pipe, the first positioning part 12 of the joint 10 is in small clearance fit with the second positioning part 22 correspondingly arranged on the outer wall of the stop collar 20, namely, the positioning gap of the joint is in small clearance fit with the width of the positioning bulge, the preferred single-side fit clearance in the width direction of the bulge and the gap is 0.05-0.25mm, particularly, when the pipe body is a water inlet pipe, the second positioning part 22 of the stop collar 20 can only be assembled vertically upwards, at the moment, the shunt hole on the pipe body of the water inlet pipe faces downwards to reduce the disturbance to the hot water on the upper part, the service performance of the hot water is greatly improved, when the pipe body is a water outlet pipe, the pipe body extends into the inner container to be bent upwards, and the hot water output of the water tank is improved at the same time, the effective volume of the water tank is ensured.
In the above embodiment, the first fixing portion 11 is provided with a notch, and the notch forms the first positioning portion 12; the second positioning portion 22 is a positioning protrusion matched with the notch. The first positioning part 12 is formed by arranging a notch on the fixed boss, so that the fixed boss has the functions of fixing and positioning at the same time, and the dual-purpose fixed boss belongs to a dual-purpose object.
In the specific implementation process, the width of the positioning boss is preferably set to be 4-8mm, the length of the positioning boss is set to be 20-30mm, the number of the positioning bosses is not limited to one, a plurality of positioning bosses can be uniformly distributed along the circumferential direction, and parameters such as the width, the length and the like of the positioning bosses can be further adjusted.
In the above embodiment, the limiting ribs of the limiting sleeve 20 may be annular limiting ribs, the circle center of the annular limiting ribs is located on the axis of the limiting sleeve 20 or the pipe body, the fixing boss is an annular fixing boss, the annular limiting ribs correspond to the annular fixing boss, and the minimum diameter of the limiting ribs is greater than the inner diameter of the fixing boss. The interference fit amount of the limiting sleeve 20 and the joint 10 is preferably set to be 0.3-0.8mm, the diameter width of the limiting rib is preferably set to be 0.3-0.8mm, the assembly resistance is reduced to the maximum extent, and the water pipe 1 is ensured to have enough interference fit amount and cannot be loosened. The number of the limiting ribs is not limited to 1, and meanwhile, a plurality of sections of arc-shaped limiting ribs uniformly distributed along the circumference can also be arranged, namely, the limiting ribs are partially lost in the circumferential direction. The small-area and small-distance annular ribs are matched with the fixed bosses in a small interference manner, so that the friction resistance during the assembly of the water pipe is reduced. The limiting ribs can also be arranged into strip ribs, and the extending direction of the limiting ribs is parallel to the axis direction of the limiting sleeve 20 or the pipe body. The whole circumferential surface contact is changed into the small straight line section contact, so that the contact area between the limiting ribs and the inner wall of the joint 1 is further reduced, the assembly friction force is reduced, and the water pipe is easily assembled. The vertical limiting ribs are uniformly distributed along the circumferential direction, and the number of the vertical limiting ribs can be preferably more than or equal to 2. It will be appreciated that the cross-sectional shape of the spacing ribs may be provided as follows: circular, semi-circular, oval, diamond, trapezoidal, or the like.
According to another aspect of the invention, a water heater is further disclosed, and the water heater comprises the flow guide pipe assembly.
In the above embodiment, the joint 10 has the first end and the second end which are oppositely arranged, and the first end of the joint 10 corresponds to the mounting opening 51 on the inner container wall 50 of the water heater; the stop collar 20 includes a first axial section located inside the joint 10 and a second axial section corresponding to the mounting opening 51, and the diameter of the second axial section is smaller than that of the mounting opening 51 to prevent the water pipe 30 from interfering with the enamel layer of the mounting opening 51 when assembled.
In the above embodiment, the connecting portion of the second axial segment and the first axial segment forms a step structure, and the outer edge of the step structure is provided with the guide inclined surface. Through forming the direction inclined plane, can realize the low dynamics assembly of body, can not lead to the mouth of pipe to receive external force violent striking and take off porcelain, explode porcelain.
In the above embodiment, the water heater further comprises a water pipe 30, and the first end of the water pipe 30 is fixedly arranged in the limiting sleeve 20.
In the above embodiment, the inner wall of the water pipe 30 is provided with the fastening protrusion 31 along the circumferential direction, and the fastening protrusion 31 is used for being tightly matched with the assembling rod. The gripping protrusion 31 is located in the joint 10, and the gripping protrusion 31 is disposed near the first end of the joint 10 to prevent the water pipe 30 from dropping due to unbalanced support center of gravity. The inside of water pipe 30 sets up a plurality of chucking archs 31 along circumferencial direction equipartition, different range, and the tangent chucking of the summit of chucking arch 31 and assembly pole front end tangent plane when convenient loading and delivering, water pipe 30 can not become flexible sending into joint 10 process, guarantees that water pipe 30 can accurate counterpoint send into in the breach of joint 10 inside. The diameter of the clamping protrusion 31 is preferably set to be 4-5mm, the depth is preferably set to be 0.4-0.8mm, the number can be set to be even numbers such as 2, 4, 6 and 8 or odd number combinations such as 3, 5, 7 and 9, and specific parameters can further optimize and adjust the size of the front end tangent plane of the assembling rod and the size of the tangent point of the rotating assembling rod relative to the axis. The position of the clamping bulge 31 is preferably arranged on one side close to the hole position of the inner container, so that the assembling rod can stretch into the inner wall of the water pipe 30 for a certain distance and then be clamped, the situation that the water pipe 30 is only partially supported and cannot be balanced and easily drops because the clamping bulge 31 is too close to the joint 10 and is far away from one side of the inner container is avoided.
In the above embodiment, the outer wall of the water pipe 30 is formed with a groove at a position corresponding to the fastening protrusion 31, and the position limiting sleeve 20 is formed with a fixing protrusion corresponding to the groove, and the fixing protrusion is clamped in the groove. The connection between the limiting sleeve 20 and the water pipe 30 can be ensured to be firmer, and the reliability is improved.
In the above embodiment, the sealing gasket 40 is disposed between the limiting sleeve 20 and the joint 10, so as to prevent water in the liner from entering the inner wall of the joint 10.
In the above embodiment, the stop collar 20 and the water pipe 30 are integrally formed, the water pipe 30 is formed by connecting the stop collar 20 made of nylon, glass fiber and the like with a pipe body made of stainless steel and the like through integral injection molding and other process manners, the pipe body is a stainless steel pipe and is processed first; then the pipe body is placed into an injection molding die cavity for injection molding, and a limiting sleeve is formed on the pipe body, namely the limiting sleeve and the pipe body are of an integrated structure and are mutually nested together.
In the above embodiment, the inner wall of the joint 10 is further provided with the first positioning portion 12; a second positioning part 22 is arranged on the outer wall of the limiting sleeve 20 corresponding to the first positioning part 12; the first positioning portion 12 is engaged with the second positioning portion 22 to position the installation direction of the water pipe 30.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes and modifications which are obvious to the technical scheme of the invention are covered by the protection scope of the invention.
Claims (13)
1. A draft tube assembly for assembling a water tube (30) and a liner of a water heater, the draft tube assembly comprising:
the connector (10), the connector (10) is provided with a first fixing part (11), and the first fixing part (11) is an annular fixing boss arranged along the circumferential direction of the inner wall of the connector (10);
the limiting sleeve (20) is sleeved in the joint (10), a second fixing part (21) corresponding to the first fixing part (11) is arranged on the limiting sleeve (20), the second fixing part (21) is an annular limiting rib arranged on the outer wall of the limiting sleeve (20), the annular fixing boss is in interference fit with the annular limiting rib so that the limiting sleeve (20) is fixed in the joint (10), and the limiting sleeve (20) is used for being installed on the water pipe (30);
the joint (10) is further provided with a first positioning part (12), and the first positioning part (12) is a notch arranged on the annular fixed boss;
a second positioning part (22) is arranged on the outer wall of the limiting sleeve (20) corresponding to the first positioning part (12), and the second positioning part (22) is a positioning bulge matched with the notch;
the first positioning part (12) is matched with the second positioning part (22) and used for limiting the pipe body to face a preset direction when being assembled.
2. The draft tube assembly of claim 1,
the minimum diameter of the limiting rib is larger than the inner diameter of the fixed boss.
3. The draft tube assembly of claim 1,
the cross section of the limiting rib is circular, semicircular, elliptical, rhombic or trapezoidal.
4. A water heater comprising the draft tube assembly of any one of claims 1 to 3.
5. The water heater of claim 4,
the joint (10) is provided with a first end and a second end which are oppositely arranged, and the first end of the joint (10) corresponds to a mounting opening (51) on the inner container wall (50) of the water heater;
the limiting sleeve (20) comprises a first axial section and a second axial section, wherein the first axial section is located inside the joint (10), the second axial section corresponds to the position of the mounting opening (51), and the diameter of the second axial section is smaller than that of the mounting opening (51).
6. The water heater of claim 5,
the connecting part of the second axial section and the first axial section forms a step structure, and a guide inclined plane is arranged at the outer edge of the step structure.
7. The water heater according to claim 5, further comprising a water pipe (30), wherein a first end of the water pipe (30) is fixedly disposed within the stop collar (20).
8. The water heater according to claim 7, characterized in that the inner wall of the water pipe (30) is circumferentially provided with a clamping protrusion (31), and the clamping protrusion (31) is used for being tightly matched with the assembling rod.
9. The water heater of claim 8,
the clamping protrusion (31) is located in the joint (10), and the clamping protrusion (31) is close to the first end of the joint (10).
10. The water heater of claim 8, wherein a groove is formed on the outer wall of the water pipe (30) at a position corresponding to the clamping protrusion (31), a fixing protrusion corresponding to the groove is formed on the limiting sleeve (20), and the fixing protrusion is clamped in the groove.
11. The water heater according to claim 4, characterized in that a sealing gasket (40) is arranged between the stop collar (20) and the joint (10).
12. The water heater of claim 7,
the limiting sleeve (20) and the water pipe (30) are integrally formed.
13. The water heater of claim 7,
the inner wall of the joint (10) is also provided with a first positioning part (12);
a second positioning part (22) is arranged on the outer wall of the limiting sleeve (20) corresponding to the first positioning part (12);
the first positioning part (12) is matched with the second positioning part (22) to position the installation direction of the water pipe (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810963123.3A CN109084091B (en) | 2018-08-22 | 2018-08-22 | Flow guide pipe assembly and water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810963123.3A CN109084091B (en) | 2018-08-22 | 2018-08-22 | Flow guide pipe assembly and water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109084091A CN109084091A (en) | 2018-12-25 |
| CN109084091B true CN109084091B (en) | 2022-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810963123.3A Active CN109084091B (en) | 2018-08-22 | 2018-08-22 | Flow guide pipe assembly and water heater |
Country Status (1)
| Country | Link |
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| CN (1) | CN109084091B (en) |
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| CN115162824B (en) * | 2022-09-07 | 2023-01-31 | 中化二建集团有限公司 | Installation and construction method of carbonization tower |
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