CN219200108U - Coiled pipe type condensing heat exchanger - Google Patents
Coiled pipe type condensing heat exchanger Download PDFInfo
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- CN219200108U CN219200108U CN202222878122.3U CN202222878122U CN219200108U CN 219200108 U CN219200108 U CN 219200108U CN 202222878122 U CN202222878122 U CN 202222878122U CN 219200108 U CN219200108 U CN 219200108U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Abstract
The utility model provides a coiled tube type condensing heat exchanger which comprises a cylindrical shell, a sealing plate, a central supporting tube, a lower collecting tube, an upper collecting tube and a coiled tube. The middle part of the cylindrical shell is provided with a heat exchange cavity, and the upper end and the lower end of the cylindrical shell are respectively sealed by an upper cover and a lower cover; the sealing plates are two, the middle part is provided with grid openings, and the grid openings are respectively arranged between the cylindrical shell and the upper cover and the lower cover; the central supporting tube is positioned in the middle of the heat exchange cavity and fixedly arranged between the upper sealing plate and the lower sealing plate; the lower header is annular and provided with an inner space, and is arranged on the sealing plate; the upper header is annular and is provided with an inner space which is arranged on the sealing plate; two ends of the winding pipe are respectively communicated with the upper header pipe and the lower header pipe, and at least two winding pipes spirally surround the outer side of the central supporting pipe. The coiled pipe type condensing heat exchanger is vertically installed, can bear high temperature and high pressure, reduces scaling, can increase or reduce the length and the number of layers of coiled pipes according to the size of the heat exchanger, is free to combine, is simple to manufacture, and can be produced in a large scale.
Description
Technical Field
The utility model relates to the technical field of heat exchangers, in particular to a coiled pipe type condensation heat exchanger.
Background
The heat exchanger is energy-saving equipment for realizing heat transfer between two or more fluids with different temperatures, and transfers the heat of a high-temperature fluid to a low-temperature fluid through a metal wall surface, so that the temperature of the low-temperature fluid reaches the index specified by a flow, thereby meeting the requirements of process conditions, improving the utilization rate of energy sources and being widely applied to the technical processes of evaporation, condensation, heating, cooling and the like of the materials.
The heat exchangers commonly used in China at present comprise shell-and-tube heat exchangers, floating coil heat exchangers, double-tube heat exchangers, plate shell heat exchangers and the like. Under the same heat exchange area, the shell-and-tube heat exchanger, the floating coil heat exchanger and the double-pipe heat exchanger have the characteristics of large volume, large weight and high manufacturing cost, but can generally bear high pressure and high temperature, and the double-pipe heat exchanger is difficult to clean after scaling; the plate heat exchanger has the defects of small volume, large weight and low manufacturing cost under the same heat exchange area, but is difficult to clean after scaling and cannot bear high pressure and high temperature; the plate-shell heat exchanger has small volume, light weight and high manufacturing cost under the same heat exchange area, but has large manufacturing process difficulty, has the problem that scale is difficult to clean, and can only bear certain high pressure (not more than 10 MPa) and high temperature.
Based on various characteristics of the heat exchanger, the inventor develops a coiled tube type condensing heat exchanger which can bear high temperature and high pressure, can reduce scaling of a heat exchange tube, is simple to manufacture, can be produced in a large scale, and has smaller volume under the same heat exchange area.
Disclosure of Invention
Therefore, the technical problem to be solved by the utility model is to overcome the technical defects that under the condition of the same heat exchange area, part of heat exchangers cannot bear high temperature and high pressure, part of heat exchangers are large in size, heavy in weight and high in cost, and part of heat exchangers are easy to scale but difficult to clean, so that the coiled tube type condensing heat exchanger which can bear high temperature and high pressure and is difficult to scale is provided, and is small in size, light in weight and low in cost.
To this end, the utility model provides a coiled condensing heat exchanger comprising:
the middle part of the cylindrical shell is provided with a heat exchange cavity, an upper cover and a lower cover are respectively detachably arranged at the upper end and the lower end, a first opening is formed in the upper cover, and a second opening is formed in the lower cover;
the sealing plates comprise an upper sealing plate and a lower sealing plate, the middle parts of the upper sealing plate and the lower sealing plate are respectively provided with a grid-shaped opening, the upper sealing plate is arranged between the cylindrical shell and the upper cover, and the lower sealing plate is arranged between the cylindrical shell and the lower cover;
the central support tube is positioned in the middle of the heat exchange cavity and is detachably and fixedly arranged between the upper sealing plate and the lower sealing plate;
the lower header is of an annular structure and provided with an inner space, is sleeved outside the central supporting tube, is arranged above the lower sealing plate and is higher than the lower sealing plate by a certain height, and is communicated with the outside through a first pipeline downwards penetrating through the cylindrical shell;
the upper header is of an annular structure and is provided with an inner space, is sleeved outside the central supporting tube, is positioned below the upper sealing plate and lower than the upper sealing plate by a certain height, and is communicated with the outside through a second pipeline upwards penetrating through the cylindrical shell;
and at least one winding pipe, one end of which is communicated with the lower header pipe, the other end of which is communicated with the upper header pipe, and the winding pipe spirally surrounds the outer side of the central supporting pipe and is fixed on the central supporting pipe.
The utility model provides a coiled pipe type condensing heat exchanger, which comprises:
the middle part of the cylindrical shell is provided with a heat exchange cavity, an upper cover and a lower cover are respectively detachably arranged at the upper end and the lower end, a first opening is formed in the upper cover, and a second opening is formed in the lower cover;
the sealing plates comprise an upper sealing plate and a lower sealing plate, the middle parts of the upper sealing plate and the lower sealing plate are respectively provided with a grid-shaped opening, the upper sealing plate is arranged between the cylindrical shell and the upper cover, and the lower sealing plate is arranged between the cylindrical shell and the lower cover;
the central support tube is positioned in the middle of the heat exchange cavity and is detachably and fixedly arranged between the upper sealing plate and the lower sealing plate;
the lower header is of an annular structure and provided with an inner space, is sleeved outside the central supporting tube, is arranged above the lower sealing plate and is higher than the lower sealing plate by a certain height, and is communicated with the outside through a first pipeline downwards penetrating through the cylindrical shell;
the upper header is of an annular structure and is provided with an inner space, is sleeved outside the central supporting tube, is positioned below the upper sealing plate and is lower than the upper sealing plate by a certain height, and is communicated with the outside through a second pipeline penetrating through the inside of the central supporting tube downwards and penetrating through the cylindrical shell;
and at least one winding pipe, one end of which is communicated with the lower header pipe, the other end of which is communicated with the upper header pipe, and the winding pipe spirally surrounds the outer side of the central supporting pipe and is fixed on the central supporting pipe.
As a preferable scheme, the inner diameter of the winding pipe is 8-16mm, the thickness is 0.5-2mm, the length is 0.5-120m, and the winding pipe is made of one of stainless steel, aluminum, copper, carbon steel and chemical plastics.
As a preferred solution, the winding pipes are provided in a plurality, and at least two layers are spirally wound around the central supporting pipe from inside to outside.
As a preferable scheme, the radius of the orthographic projection of the central axis of the winding pipe is 80mm-1000mm.
As a preferable scheme, one layer of the winding pipe comprises at least two spiral directions, the spiral directions of two upper and lower adjacent winding pipes in one layer of the winding pipe are different, and the two upper and lower adjacent winding pipes are fixed at intervals through filler strips.
Preferably, a free bending section is arranged between the spiral end of the winding pipe and the upper header or the lower header.
As a preferable scheme, the diameters of the pipe orifices of the spiral winding in the same heat exchanger are the same, the lengths of the pipe orifices are the same, and the winding turns of each layer are basically the same.
As a preferable scheme, a plurality of openings are arranged on the upper header and the lower header, the spiral winding pipe can be prefabricated in advance, and two ends of the spiral winding pipe are respectively detachably communicated with the openings of the upper header and the lower header to form different winding layers.
Preferably, the device further comprises an inspection port formed in the cylindrical housing at a position close to the lower cover.
The technical scheme provided by the utility model has the following advantages:
the coiled pipe type condensing heat exchanger of the utility model comprises: the device comprises a cylindrical shell, a sealing plate, a central supporting tube, a lower collecting tube, an upper collecting tube and a winding tube. The middle part of the cylindrical shell is provided with a heat exchange cavity, the upper end and the lower end of the cylindrical shell are respectively sealed by an upper cover and a lower cover, the upper cover is provided with a first opening, and the lower cover is provided with a second opening; the sealing plates comprise an upper sealing plate and a lower sealing plate, the middle parts of the upper sealing plate and the lower sealing plate are respectively provided with grid-shaped openings, the upper sealing plate is arranged between the cylindrical shell and the upper cover, and the lower sealing plate is arranged between the cylindrical shell and the lower cover; the central supporting tube is positioned in the middle of the heat exchange cavity and fixedly arranged between the upper sealing plate and the lower sealing plate; the lower header is of an annular structure and is provided with an inner space, is sleeved outside the central supporting tube, is arranged above the lower sealing plate and is higher than the lower sealing plate by a certain height, and is communicated with the outside through a first pipeline downwards penetrating through the cylindrical shell; the upper header is of an annular structure and is provided with an inner space, is sleeved outside the central supporting tube, is arranged below the upper sealing plate and is lower than the upper sealing plate by a certain height, and is communicated with the outside through a second pipeline upwards through the cylindrical shell; at least one winding pipe is arranged, one end of the winding pipe is communicated with the lower header pipe, the other end of the winding pipe is communicated with the upper header pipe, and the winding pipe is spirally wound on the outer side of the central supporting pipe and is fixed on the central supporting pipe. According to the coiled pipe type condensing heat exchanger, fluid in the cylindrical shell is a first medium and flows in from the second opening, and the first opening flows out; the fluid in the winding pipe is a second medium, enters the winding pipe from a second pipeline, exchanges heat with the first medium in the cylindrical shell, and flows out through the first pipeline. The coiled tube type condensing heat exchanger disclosed by the utility model has the advantages that the tube pass is composed of all coiled tubes, and the two ends of the coiled tube are respectively communicated with the upper header and the lower header, so that a tube plate and an end socket are omitted, the weight is reduced, the cost is reduced, the coiled tube type condensing heat exchanger can bear higher pressure, and the maximum pressure can reach 24.5MPa; the winding pipe spiral surrounds the outside at the center stay tube, has increased the tube side of winding pipe in the heat transfer cavity, and under the equal heat transfer area, heat exchange efficiency is higher. The winding pipe has a plurality of, from inside to outside spiral winding around the central stay tube has two-layer at least, and one deck winding pipe contains two kinds of at least spiral directions, and the spiral direction of two upper and lower adjacent winding pipes in the one deck winding pipe is different, and is fixed through the filler strip interval between two upper and lower adjacent winding pipes, sets up winding pipe central axis orthographic projection's radius and is 80-1000mm, can borrow the centrifugal force and the downward impact force of fluid medium in the winding pipe like this (the interval setting is also in order to obtain bigger downward impact force), makes turbulent flow in the winding pipe as far as possible, erodes the inner wall of winding pipe, avoids producing the scale deposit.
The coiled pipe type condensing heat exchanger provided by the utility model is vertically installed, can bear high temperature and high pressure, reduces scaling, can be manufactured by a pipe bender, can be freely combined by only increasing or reducing the length and the layer number of the coiled pipe according to the size of the heat exchanger, is simple to manufacture, has low manufacturing cost and can be produced in a large scale.
Drawings
In order to more clearly illustrate the technical solutions in the prior art or in the embodiments of the present utility model, the following brief description is given of the drawings used in the description of the prior art or the embodiments.
Fig. 1 is a schematic view of the overall structure of the coiled tube type condensing heat exchanger of the present utility model.
Fig. 2 is a schematic view of the whole structure of a coiled tube type condensation heat exchanger in another structure form.
Reference numerals: 1. a cylindrical housing; 11. a heat exchange chamber; 12. an upper cover; 13. a lower cover; 14. a first opening; 15. a second opening; 2. a sealing plate; 21. an upper sealing plate; 22. a lower sealing plate; 3. a central support tube; 31. a first pipeline; 4. a lower header; 5. an upper header; 51. a second pipeline; 6. and winding the pipe.
Detailed Description
In order for those skilled in the art to better understand the present solution, the following description will clearly and fully describe the technical solution in the embodiments of the present application with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the claims and description herein are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.
In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe the present application and its embodiments and are not intended to limit the indicated device, element or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in this application will be understood by those skilled in the art as the case may be. In addition, the term "plurality" shall mean two as well as more than two. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Examples
This embodiment provides a coiled tubing condensing heat exchanger, as shown in fig. 1, comprising: a cylindrical shell 1, a sealing plate 2, a central supporting tube 3, a lower header 4, an upper header 5 and a winding tube 6.
The middle part of the cylindrical shell 1 is provided with a heat exchange cavity 11, the upper end and the lower end of the cylindrical shell are respectively sealed by an upper cover 12 and a lower cover 13, a first opening 14 is formed in the upper cover 12, and a second opening 15 is formed in the lower cover 13; the sealing plate 2 comprises an upper sealing plate 21 and a lower sealing plate 22, the middle parts of the sealing plates are provided with grid-shaped openings, the upper sealing plate 21 is arranged between the cylindrical shell 1 and the upper cover 12, and the lower sealing plate 22 is arranged between the cylindrical shell 1 and the lower cover 13; the central supporting tube 3 is positioned in the middle of the heat exchange chamber 11 and is detachably and fixedly arranged between the upper sealing plate 21 and the lower sealing plate 22; the lower header 4 is of an annular structure and has an inner space, is sleeved outside the central supporting tube 3, is arranged above the lower sealing plate 22 and is higher than the lower sealing plate 22 by a certain height, and is communicated with the outside through the first pipeline 31 downwards penetrating through the cylindrical shell 1; the upper header 5 is of an annular structure and has an inner space, is sleeved outside the central supporting tube 3, is positioned below the upper sealing plate 21 and is lower than the upper sealing plate 21 by a certain height, and is communicated with the outside through a second pipeline 51 upwards penetrating through the cylindrical shell 1; at least one winding tube 6, one end of which is communicated with the lower header 4 and the other end of which is communicated with the upper header 5, is spirally wound around the outside of the central support tube 3 and is fixed on the central support tube 3.
In the coiled tube type condensation heat exchanger of the embodiment, fluid in the cylindrical shell 1 is a first medium, enters from the second opening 15 on the lower cover 13, and flows out from the first opening 14 on the upper cover 12; the fluid in the winding tube 6 is a second medium, enters the winding tube 6 from the second pipeline 51, exchanges heat with the first medium in the cylindrical shell 1, and flows out from the first pipeline 31. The coiled pipe type condensation heat exchanger of the embodiment is characterized in that the tube pass is composed of the coiled pipes 6, two ends of the coiled pipes are respectively communicated with the upper header 5 and the lower header 4, tube plates and sealing heads which are arranged at two ends of the coiled pipes 6 and used for gathering the coiled pipes 6 together in the prior art are omitted, the weight is reduced, the cost is reduced, the higher pressure can be borne, and the maximum pressure can reach 24.5MPa; the winding pipe 6 is spirally wound on the outer side of the central supporting pipe 3, so that the pipe side of the winding pipe 6 in the heat exchange cavity 11 is increased, and the heat exchange efficiency is higher under the same heat exchange area; further, the winding pipe 6 can be manufactured by a pipe bender, the number of layers of the winding pipe 6 is increased or reduced according to the size of the heat exchanger, the winding pipe is freely combined, the manufacturing is simple, the manufacturing cost is low, and the mass production can be realized.
In the coiled pipe type condensation heat exchanger of the embodiment, a plurality of coiled pipes 6 are coiled in parallel on the outer side of a central supporting pipe 3, the caliber of each coiled pipe 6 is the same, the length of each coiled pipe 6 is the same, and the number of turns of each coiled pipe 6 in bending is the same. The arrangement ensures that the flow rate of the heat exchange medium entering each winding pipe 6 is the same, the flow rate of the heat exchange medium in the winding pipe 6 is the same, the heat exchange temperature difference of each winding pipe 6 can be reduced to the greatest extent, and the heat exchange quantity is increased.
Preferably, the winding pipes 6 are provided in a plurality, and at least two layers are spirally wound around the central supporting pipe 3 from inside to outside; the winding tube 6 comprises at least two spiral directions, the spiral directions of two winding tubes 6 which are adjacent up and down in the winding tube 6 are different, and the two winding tubes 6 which are adjacent up and down are fixed at intervals through a filler strip; the orthographic projection radius of the central axis of the winding pipe 6 is 80mm-1000mm. Therefore, the centrifugal force and downward impact force of the fluid medium in the winding pipe 6 (the interval arrangement is also used for obtaining larger downward impact force) can be used for manufacturing turbulence in the winding pipe 6 as much as possible, flushing the inner wall of the winding pipe 6 and avoiding scaling.
In the coiled pipe type condensing heat exchanger of the embodiment, the caliber of the coiled pipe 6 is 12mm, the thickness of the coiled pipe 6 is 1mm, and the length of the coiled pipe is 20m, and the coiled pipe is made of stainless steel. As a variant, the inner diameter of the winding tube 6 can be set to 8-16mm, the thickness can be set to 0.5-2mm, and the length can be set to 0.5-120m, and the material can be any one of stainless steel, aluminum, copper, carbon steel and chemical plastics.
In the coiled pipe type condensation heat exchanger of the embodiment, a heat exchange mode of upper supply and lower return is adopted, and a first pipeline 31 is arranged towards a lower cover 13 and extends downwards to the outside of the cylindrical shell 1; the second pipe 51 is provided toward the upper cover 12 and extends upward to the outside of the cylindrical housing 1.
As shown in fig. 2, the coiled condensation heat exchanger of the present embodiment may also adopt a heat exchange mode of lower return, where the first pipeline 31 is disposed towards the lower cover 13 and extends downward to the outside of the cylindrical shell 1; one end of the second pipe 51 communicates with the upper header 5, and after being bent through the center support tube 3, extends downward to the outside of the cylindrical housing 1. When the heat exchanger is used for heat exchange of the medium easy to scale, a heat exchange mode of lower supply and lower return is preferably adopted, so that scale is reduced. In addition, a flange can be arranged at the joint of the lower cover 13 and the cylindrical shell 1, and an inspection opening and other modes can be added, so that the cleaning, the maintenance and the inspection are convenient.
In the coiled pipe type condensation heat exchanger of the embodiment, a certain gap is formed between two adjacent layers of coiled pipes 6, and the coiled pipes are a plurality of filler strips with the same thickness and are arranged between the two adjacent layers of coiled pipes 6. A certain gap is reserved between two adjacent layers of the winding pipe 6, a large free bending section 61 is arranged between the spiral tail end of the winding pipe 6 and the upper header 5 or the lower header 4, so that cold and hot expansion and contraction can be compensated freely, and the winding pipe can bear high and low temperatures (-195 ℃ to 550 ℃); the winding pipes 6, the upper header 5 and the lower header 4 are all fixed on the central supporting pipe 3, and two adjacent layers are fixed by using filler strips with the same thickness, so that the distances between the two adjacent layers of winding pipes 6 are the same.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious changes and modifications which are extended therefrom are still within the scope of the present innovative teachings.
Claims (9)
1. A coiled condensing heat exchanger, comprising:
the heat exchange device comprises a cylindrical shell (1), wherein a heat exchange cavity (11) is formed in the middle of the cylindrical shell, an upper cover (12) and a lower cover (13) are respectively detachably arranged at the upper end and the lower end of the cylindrical shell, a first opening (14) is formed in the upper cover (12), and a second opening (15) is formed in the lower cover (13);
the sealing plate (2) comprises an upper sealing plate (21) and a lower sealing plate (22), the middle parts of the upper sealing plate and the lower sealing plate are respectively provided with a grid-shaped opening, the upper sealing plate (21) is arranged between the cylindrical shell (1) and the upper cover (12), and the lower sealing plate (22) is arranged between the cylindrical shell (1) and the lower cover (13);
the central supporting tube (3) is positioned in the middle of the heat exchange chamber (11) and is detachably and fixedly arranged between the upper sealing plate (21) and the lower sealing plate (22);
the lower header (4) is of an annular structure and is provided with an inner space, is sleeved outside the central supporting tube (3), is arranged above the lower sealing plate (22) and is higher than the lower sealing plate (22) by a certain height, and is communicated with the outside through a first pipeline (31) downwards penetrating through the cylindrical shell (1);
the upper header (5) is of an annular structure and is provided with an inner space, is sleeved outside the central supporting tube (3), is positioned below the upper sealing plate (21) and is lower than the upper sealing plate (21) by a certain height, and is communicated with the outside through a second pipeline (51) upwards penetrating through the cylindrical shell (1);
and at least one winding pipe (6), one end of which is communicated with the lower header (4) and the other end of which is communicated with the upper header (5), is spirally wound on the outer side of the central supporting pipe (3) and is fixed on the central supporting pipe (3).
2. The coiled condensing heat exchanger of claim 1, wherein: the inner diameter of the winding pipe (6) is 8-16mm, the thickness is 0.5-2mm, the length is 0.5-120m, and the winding pipe is made of one of stainless steel, aluminum, copper, carbon steel and chemical plastics.
3. The coiled condensing heat exchanger of claim 1, wherein: the winding pipes (6) are in a plurality, and at least two layers are spirally wound around the central supporting pipe (3) from inside to outside.
4. A coiled tubing condensing heat exchanger according to claim 3, characterized by: the orthographic projection radius of the central axis of the winding pipe (6) is 80mm-1000mm.
5. A coiled tubing condensing heat exchanger according to claim 3, characterized by: one layer of winding pipe (6) contains at least two kinds of spiral directions, one layer winding pipe (6) upper and lower adjacent two winding pipe (6) the spiral direction is different, and upper and lower adjacent two winding pipe (6) are fixed through the filler strip interval between.
6. The coiled condensing heat exchanger of claim 1, wherein: a free bending section (61) is arranged between the spiral end of the winding pipe (6) and the upper header (5) or the lower header (4).
7. The coiled condensing heat exchanger of claim 1, wherein: the diameters of the spiral winding pipes (6) in the same heat exchanger are the same, the lengths of the spiral winding pipes are the same, and the winding turns of all layers are basically the same.
8. The coiled condensing heat exchanger of claim 1, wherein: the openings on the upper header (5) and the lower header (4) are provided with a plurality of spiral winding pipes (6) which can be prefabricated in advance, and two ends of each spiral winding pipe (6) are respectively detachably communicated with the openings of the upper header (5) and the lower header (4) to form different winding layers.
9. The coiled condensing heat exchanger of claim 1, wherein: the device also comprises an inspection opening which is arranged at the position of the cylindrical shell (1) close to the lower cover (13).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321238818.8U CN219869196U (en) | 2022-10-31 | 2022-10-31 | Coiled pipe type condensing heat exchanger |
| CN202222878122.3U CN219200108U (en) | 2022-10-31 | 2022-10-31 | Coiled pipe type condensing heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222878122.3U CN219200108U (en) | 2022-10-31 | 2022-10-31 | Coiled pipe type condensing heat exchanger |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321238818.8U Division CN219869196U (en) | 2022-10-31 | 2022-10-31 | Coiled pipe type condensing heat exchanger |
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| Publication Number | Publication Date |
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| CN219200108U true CN219200108U (en) | 2023-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222878122.3U Active CN219200108U (en) | 2022-10-31 | 2022-10-31 | Coiled pipe type condensing heat exchanger |
| CN202321238818.8U Active CN219869196U (en) | 2022-10-31 | 2022-10-31 | Coiled pipe type condensing heat exchanger |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202321238818.8U Active CN219869196U (en) | 2022-10-31 | 2022-10-31 | Coiled pipe type condensing heat exchanger |
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| CN (2) | CN219200108U (en) |
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2022
- 2022-10-31 CN CN202222878122.3U patent/CN219200108U/en active Active
- 2022-10-31 CN CN202321238818.8U patent/CN219869196U/en active Active
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| CN219869196U (en) | 2023-10-20 |
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