Coil pipe joint sealing and fixing structure and heat exchanger

Abstract

The coil pipe connector sealing and fixing structure comprises a shell, a coil pipe, a positioning piece and a sealing piece, the shell is provided with a pipeline connector, the coil pipe is arranged in the shell, one end of the coil pipe extends out of the pipeline connector, the positioning piece is arranged in the pipeline connector and abuts against the inner wall of the pipeline connector, the coil pipe penetrates through the positioning piece, and the sealing piece is arranged on the coil pipe connector. The positioning part is arranged in the shell and abuts against the coil pipe for positioning, a first annular protruding part is arranged at the end, close to the shell, of the positioning part, the sealing part is provided with an annular groove with an opening facing the positioning part, the first annular protruding part can be inserted into the annular groove, the first annular protruding part is in interference fit with the annular groove, and the sealing part can abut against the inner wall of the shell and the outer wall of the coil pipe for sealing. The first annular protruding part can be in interference fit with the annular groove of the sealing piece, so that the sealing piece is driven to deform outwards and inwards along the annular groove, the sealing performance can be further improved, the service life of the sealing structure can be prolonged, and the maintenance and replacement frequency can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field related to heat exchange equipment, and in particular to a coil joint sealing and fixing structure and a heat exchanger. Background Art

[0002] The pipe interfaces of the heat exchanger need to be sealed. In the existing technology, sealing rings are generally used for sealing. However, after the equipment has been running for a long time, the sealing rings will age, and the sealing rings may not be able to maintain close contact with the sealing surface under frequent temperature changes, resulting in a decrease in sealing performance and prone to leakage problems. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides a coil joint sealing and fixing structure and a heat exchanger, which can extend the life of the sealing structure.

[0004] According to the first aspect of the present invention, the coil joint sealing and fixing structure includes: a shell, a coil, a positioning member and a sealing member. The shell has a pipe interface, the coil is arranged in the shell, and one end of the coil extends out of the pipe interface, the positioning member is arranged in the pipe interface, and the positioning member abuts against the inner wall of the pipe interface, the coil passes through the positioning member, and the positioning member abuts against the coil for positioning, the positioning member is provided with a first annular protrusion near one end of the shell, and the sealing member is provided with an annular groove with an opening toward the positioning member, the first annular protrusion can be inserted into the annular groove, and the first annular protrusion is interference fit with the annular groove, and the sealing member can abut and seal against the inner wall of the shell and the outer wall of the coil.

[0005] The coil joint sealing and fixing structure according to the embodiment of the present invention has at least the following beneficial effects: the positioning member can support and position the coil, and can also initially seal with the pipe interface and the coil, and the first annular protrusion can interference fit with the annular groove of the seal, thereby driving the seal to deform outward and inward along the annular groove, so that it can further closely abut against the inner wall of the pipe interface and the outer wall of the coil, which can further improve the sealing performance. Even after the seal ages, its deformation amount can provide sufficient sealing performance, which can increase the service life of the sealing structure and thus reduce the frequency of maintenance and replacement.

[0006] According to some embodiments of the present invention, at least one annular sealing groove is provided on the inner side wall of the pipe interface, the positioning member is interference fit with the pipe interface, and the positioning member abuts against the annular sealing groove.

[0007] According to some embodiments of the present invention, the outer side wall of the sealing member is provided with a second annular protrusion, and the second annular protrusion can be sealingly matched with the inner side wall of the pipe interface.

[0008] According to some embodiments of the present invention, a third annular protrusion is provided on the inner side wall of the sealing element, and the third annular protrusion can cooperate with the coil in a sealing manner.

[0009] According to some embodiments of the present invention, the seal is provided with a first guide portion, the first guide portion is located between the outer side wall of the seal and the end portion close to the shell, and the first guide portion is tilted outward in a direction away from the shell.

[0010] According to some embodiments of the present invention, the first annular protrusion is provided with a second guide portion, the second guide portion is located between the outer side wall of the first annular protrusion and the end close to the shell, and the second guide portion is tilted outward in a direction away from the shell.

[0011] According to some embodiments of the present invention, the positioning member and the sealing member are both made of elastic material, and the Shore hardness of the positioning member is greater than the Shore hardness of the sealing member.

[0012] According to some embodiments of the present invention, the coil includes a joint section, a reducing section and a spiral section arranged in sequence, the joint section extends out of the pipe interface, and the radial dimension of the reducing section gradually decreases from the joint section to the spiral section.

[0013] According to some embodiments of the present invention, the positioning member and the sealing member are both located at the joint section.

[0014] The heat exchanger according to the second embodiment of the present invention includes a heat exchanger using the above-mentioned coil joint sealing and fixing structure.

[0015] The heat exchanger according to the embodiment of the present invention has at least the following beneficial effects: by adopting the above-mentioned coil joint sealing and fixing structure, the sealing effect can be further improved, and even under long-term use, the seal can provide sufficient sealing effect, thereby reducing the maintenance cost of the heat exchanger.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 Exploded views of some embodiments of the present invention;

[0019] Figure 2 are cross-sectional views of some embodiments of the present invention;

[0020] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0021] Reference numerals:

[0022] Housing 100, pipe interface 110, annular sealing groove 111;

[0023] Coil 200, joint section 210, diameter reducing section 220, spiral section 230;

[0024] Positioning member 300, first annular protrusion 310, second guide portion 311;

[0025] Sealing member 400 , annular groove 410 , second annular protrusion 420 , third annular protrusion 430 , and first guide portion 440 . DETAILED DESCRIPTION

[0026] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0028] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0029] Reference Figures 1 to 3 According to the first embodiment of the present invention, the coil joint sealing and fixing structure includes a shell 100, a coil 200, a positioning member 300 and a sealing member 400. The shell 100 has a pipe interface 110, the coil 200 is arranged in the shell 100, and one end of the coil 200 extends out of the pipe interface 110, the positioning member 300 is arranged in the pipe interface 110, and the positioning member 300 abuts against the inner wall of the pipe interface 110, the coil 200 passes through the positioning member 300, and the positioning member 300 abuts against the coil 200 for positioning, the positioning member 300 is provided with a first annular protrusion 310 near one end of the shell 100, and the sealing member 400 is provided with an annular groove 410 with an opening facing the positioning member 300, the first annular protrusion 310 can be inserted into the annular groove 410, and the first annular protrusion 310 and the annular groove 410 are interference fit, and the sealing member 400 can abut and seal against the inner wall of the shell 100 and the outer wall of the coil 200. The positioning member 300 can support and position the coil 200, and can also initially seal with the pipe interface 110 and the coil 200, and the first annular protrusion 310 can interference fit with the annular groove 410 of the seal 400, thereby driving the seal 400 to deform outward and inward along the annular groove 410, so that it can further closely abut against the inner wall of the pipe interface 110 and the outer wall of the coil 200, which can further improve the sealing performance. Even after aging, the deformation of the seal 400 can provide sufficient sealing performance, which can increase the service life of the sealing structure and thus reduce the frequency of maintenance and replacement.

[0030] Specifically, the positioning member 300 can be set as an annular body, and the coil 200 can pass through it. The positioning member 300 can position and support the coil 200, and the positioning member 300 can be made of elastic material, which can abut and seal the inside of the pipe interface 110 and the outer wall of the coil 200. The sealing member 400 can also be set as an annular body. When assembling, the annular groove 410 of the sealing member 400 is aligned with the first annular protrusion 310 and pressed to install. Since its size is an interference fit, the first annular protrusion 310 will drive the annular groove 410 expands and deforms outward, and then the positioning member 300 and the sealing member 400 are installed into the pipe interface 110. The sealing member 400 can further abut against the inner wall of the pipe interface 110 and the outer wall of the coil 200, thereby improving the sealing performance. The sealing member 400 is in contact with the internal fluid and will accelerate aging under long-term use, while the positioning member 300 ages slowly. The elastic force applied to the sealing member 400 by the first annular protrusion 310 can enable the sealing member 400 to still maintain its sealing performance, thereby improving the sealing life.

[0031] Reference Figure 3 In some embodiments of the present invention, at least one annular sealing groove 111 is provided on the inner side wall of the pipe interface 110, and the positioning member 300 is interference-fitted with the pipe interface 110, and the positioning member 300 abuts against the annular sealing groove 111, thereby improving the sealing effect.

[0032] Specifically, two annular sealing grooves 111 can be set, and the annular sealing grooves 111 can be arranged at intervals. The positioning member 300 is located at the annular sealing groove 111, and the positioning member 300 can be made of elastic material. When the positioning member 300 is interference fit with the inner wall of the pipeline interface 110, the positioning member 300 can be deformed to fill into the annular sealing groove 111, thereby improving the sealing effect.

[0033] Refer to Figures 1 to Figure 3 In some embodiments of the present invention, the outer wall of the sealing member 400 is provided with a second annular protrusion 420, which can be sealed with the inner wall of the pipe interface 110. This can further improve the sealing effect.

[0034] Specifically, the second annular protrusion 420 can protrude outward, and when the sealing member 400 is sealed, the second annular protrusion 420 can be fully deformed by the force, thereby further improving the sealing effect.

[0035] It can be understood that a plurality of second annular protrusions 420 can be provided.

[0036] Reference Figures 2 to 3In some embodiments of the present invention, a third annular protrusion 430 is provided on the inner side wall of the sealing member 400. The third annular protrusion 430 can be sealed with the coil 200 to further improve the sealing effect.

[0037] Specifically, the third annular protrusion 430 can protrude toward the coil 200 . When the seal 400 is in sealing engagement, the third annular protrusion 430 can be sufficiently deformed by the force, thereby further improving the sealing effect.

[0038] It can be understood that a plurality of third annular protrusions 430 can be provided.

[0039] Reference Figures 1 to 3 In some embodiments of the present invention, the seal 400 is provided with a first guide portion 440. The first guide portion 440 is located between the outer wall of the seal 400 and the end close to the housing 100. The first guide portion 440 is tilted outward in a direction away from the housing 100. This facilitates deformation in coordination with the pipe interface 110.

[0040] Specifically, when the seal 400 is installed toward the pipe interface 110, the first guide portion 440 can guide the seal 400 to be inserted into the pipe interface 110, which can facilitate assembly. The first guide portion 440 is a slope, and its inclination direction narrows from the outside to the inside along the installation direction, which is convenient for deformation in coordination with the pipe interface 110.

[0041] Reference Figures 2 to 3 In some embodiments of the present invention, the first annular protrusion 310 is provided with a second guide portion 311. The second guide portion 311 is located between the outer wall of the first annular protrusion 310 and the end closest to the housing 100. The second guide portion 311 is tilted outwardly away from the housing 100. The second guide portion 311 facilitates assembly of the first annular protrusion 310 with the annular groove 410.

[0042] Specifically, when the first annular protrusion 310 is assembled with the annular groove 410, it can be guided by the second guide portion 311 so that it can be easily inserted into the seal 400. The second guide portion 311 can enable the first annular protrusion 310 to be inserted into the annular groove 410 first to avoid misalignment and facilitate assembly.

[0043] In some embodiments of the present invention, the positioning member 300 and the sealing member 400 are both made of elastic material, and the Shore hardness of the positioning member 300 is greater than that of the sealing member 400, thereby improving the sealing effect and sealing life.

[0044] Specifically, the Shore hardness of the material of the positioning member 300 can be greater than the Shore hardness of the sealing member 400. The specific material is not described in detail here. In the early stage of use, the positioning member 300 with high hardness can further drive the sealing member 400 to deform outward to improve the sealing performance. After long-term use, the sealing member 400 ages and the hardness increases. The positioning member 300 can still provide a certain support performance, driving the sealing member 400 to abut against the outside to seal, thereby improving the sealing life.

[0045] Reference Figure 2 In some embodiments of the present invention, the coil 200 includes a joint section 210, a reducing section 220, and a spiral section 230, which are sequentially arranged. The joint section 210 extends from the pipe interface 110, and the radial dimension of the reducing section 220 gradually decreases from the joint section 210 to the spiral section 230. Specifically, the joint section 210 is used for connection to the outside, while the reducing section 220 gradually decreases toward the spiral section 230. This ensures that the fluid enters the spiral section 230 with greater stability and maintains a certain flow rate, facilitating heat exchange.

[0046] Reference Figures 2 to 3 In some embodiments of the present invention, the positioning member 300 and the sealing member 400 are both located at the joint section 210. Specifically, the diameter of the joint is large, so the positioning member 300 and the sealing member 400 can be set thinner, which can save manufacturing costs.

[0047] Reference Figure 1 According to a second embodiment of the present invention, a heat exchanger includes a heat exchanger employing the aforementioned coil joint sealing and fixing structure. By employing the aforementioned coil joint sealing and fixing structure, the sealing effect can be further improved, and the seal 400 can provide sufficient sealing even under long-term use, thereby reducing maintenance costs of the heat exchanger.

[0048] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0049] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. The coil joint sealing and fixing structure is characterized by: include: The housing (100) has a pipe interface (110); The coil (200) is disposed in the housing (100), and one end of the coil (200) extends out of the pipe interface (110). A positioning member (300) is provided in the pipe interface (110), and the positioning member (300) abuts against the inner wall of the pipe interface (110); the coil (200) passes through the positioning member (300), and the positioning member (300) abuts against the coil (200) for positioning; and a first annular protrusion (310) is provided on one end of the positioning member (300) close to the housing (100); The sealing member (400) is provided with an annular groove (410) with an opening toward the positioning member (300); the first annular protrusion (310) can be inserted into the annular groove (410), and the first annular protrusion (310) and the annular groove (410) are interference-fitted; the sealing member (400) can abut and seal against the inner wall of the shell (100) and the outer wall of the coil (200).

2. The coil joint sealing and fixing structure according to claim 1, characterized in that: The inner side wall of the pipeline interface (110) is provided with at least one annular sealing groove (111), the positioning member (300) is interference-fitted with the pipeline interface (110), and the positioning member (300) abuts against the annular sealing groove (111).

3. The coil joint sealing and fixing structure according to claim 1, characterized in that: The outer side wall of the sealing member (400) is provided with a second annular protrusion (420), and the second annular protrusion (420) can be sealed and matched with the inner side wall of the pipe interface (110).

4. The coil joint sealing and fixing structure according to claim 3, characterized in that: The inner side wall of the sealing member (400) is provided with a third annular protrusion (430), and the third annular protrusion (430) can be sealed and matched with the coil (200).

5. The coil joint sealing and fixing structure according to claim 1, characterized in that: The sealing member (400) is provided with a first guide portion (440), the first guide portion (440) being located between an outer side wall of the sealing member (400) and an end portion close to the shell (100), and the first guide portion (440) being arranged to tilt outward in a direction away from the shell (100).

6. The coil joint sealing and fixing structure according to claim 5, characterized in that: The first annular protrusion (310) is provided with a second guide portion (311), the second guide portion (311) is located between the outer side wall of the first annular protrusion (310) and the end close to the shell (100), and the second guide portion (311) is arranged to be inclined outward in a direction away from the shell (100).

7. The coil joint sealing and fixing structure according to claim 1, characterized in that: The positioning member (300) and the sealing member (400) are both made of elastic material, and the Shore hardness of the positioning member (300) is greater than the Shore hardness of the sealing member (400).

8. The coil joint sealing and fixing structure according to claim 1, characterized in that: The coil (200) comprises a joint section (210), a diameter-reducing section (220), and a spiral section (230) which are arranged in sequence. The joint section (210) extends out of the pipeline interface (110), and the radial dimension of the diameter-reducing section (220) gradually decreases in a direction from the joint section (210) to the spiral section (230).

9. The coil joint sealing and fixing structure according to claim 8, characterized in that: The positioning member (300) and the sealing member (400) are both located at the joint section (210).

10. A heat exchanger, characterized in that The invention comprises the coil joint sealing and fixing structure according to any one of claims 1 to 9.

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