Heat exchanger capable of reducing exhaust gas temperature

Abstract

The utility model discloses a heat exchanger that can reduce exhaust temperature, including heat exchange coil, baffle structure, and heat exchange coil has inner chamber, baffle structure includes first baffle and second baffle, and first baffle sets up in inner chamber, and first baffle divides into combustion chamber and exhaust chamber with inner chamber, and second baffle is located combustion chamber or exhaust chamber, and second baffle is opposite with first baffle Setting, wherein, baffle structure still includes heat insulation soft body, and heat insulation soft body sets up between first baffle and second baffle, and second baffle is pressed in first baffle with heat insulation soft body. The heat exchanger provided by the utility model can solve the problem of heat loss caused by high-temperature air entering the gap between the baffle and the heat insulation brick in the prior art, reduce the exhaust temperature and reduce energy waste.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, and in particular to a heat exchanger that can reduce exhaust temperature. Background Technology

[0002] The heat exchange coils of existing condensing heat exchangers have a transverse baffle structure inside, which divides the inner cavity of the coil into a combustion chamber and an exhaust chamber. The fuel gas is directly burned in the combustion chamber to generate heat. The hot air inside the combustion chamber flows from the gaps in the coil to the outside of the coil, then flows along the outside of the coil to the other side of the baffle structure, and finally enters the exhaust chamber before being discharged.

[0003] In this type of heat exchanger, the baffle structure typically includes a baffle and insulating bricks. During installation, the baffle is first fixed inside the heat exchange coil, and then the insulating bricks are installed inside the combustion chamber and fixed to the baffle. The baffle divides the inner cavity of the heat exchange coil into a combustion chamber and an exhaust chamber, while the insulating bricks prevent heat from the combustion chamber from being transferred to the baffle.

[0004] Existing heat exchangers have the following drawbacks: Due to manufacturing tolerances and other factors, an assembly gap needs to be reserved between the outer periphery of the insulating brick and the inner wall of the heat exchange coil to complete the installation of the insulating brick. Simultaneously, due to heat deformation of the baffle plate or other factors, gaps also form between the baffle plate and the insulating brick. This allows high-temperature air from the combustion chamber to enter the gap between the baffle plate and the insulating brick through the gap between the insulating brick and the heat exchange coil. Furthermore, since the thickness of the baffle plate is much smaller than the thickness of the insulating brick, the baffle plate cannot effectively prevent the heat from the high-temperature air from being transferred to the exhaust chamber. Ultimately, a large amount of heat is discharged with the air, resulting in energy waste. Moreover, the exhaust temperature of the heat exchanger is too high, especially during high-power operation, where the exhaust temperature can easily exceed the limit, triggering the system protection mechanism and causing a shutdown, severely affecting equipment operation. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a heat exchanger that can reduce exhaust temperature, thereby solving the problem of heat loss caused by high-temperature air entering the gap between the partition and the insulation brick in the prior art, thus reducing exhaust temperature and minimizing energy waste.

[0006] A heat exchanger capable of reducing exhaust temperature according to an embodiment of the present invention includes a heat exchange coil and a partition structure. The heat exchange coil has an inner cavity. The partition structure includes a first partition and a second partition. The first partition is disposed in the inner cavity and divides the inner cavity into a combustion chamber and an exhaust chamber. The second partition is located in the combustion chamber or the exhaust chamber and is disposed opposite to the first partition. The partition structure further includes a heat-insulating flexible material disposed between the first partition and the second partition, and the second partition presses the heat-insulating flexible material against the first partition.

[0007] The heat exchanger for reducing exhaust temperature according to the embodiments of this utility model has at least the following beneficial effects: The heat exchanger provided by this utility model has a partition structure in which the heat insulation soft body is pressed against the first partition by the second partition, so that the heat insulation soft body effectively occupies the space between the first partition and the second partition. When the first partition undergoes thermal deformation, the heat insulation soft body can effectively prevent the air in the combustion chamber or the exhaust chamber from coming into large-area contact with the first partition due to gaps between the first partition and the second partition. This solves the problem of heat loss caused by high-temperature air entering the gap between the partition and the heat insulation brick in the prior art. Therefore, compared with the existing heat exchangers, under the same conditions such as heat exchange coil and gas power, the heat exchanger provided by this utility model can reduce the exhaust temperature, reduce the energy waste caused by exhaust, and achieve higher energy efficiency.

[0008] According to some embodiments of the present invention, the second partition is configured as a heat-insulating brick.

[0009] According to some embodiments of this utility model, the heat insulation soft material is an aluminum silicate ceramic fiber component.

[0010] According to some embodiments of the present invention, the thickness of the heat-insulating soft material is between 1 mm and 15 mm, and the thickness of the heat-insulating brick is between 10 mm and 30 mm.

[0011] According to some embodiments of the present invention, the second partition is fixedly installed on the first partition.

[0012] According to some embodiments of the present invention, the second partition is installed on the first partition by threaded fasteners.

[0013] According to some embodiments of the present invention, the heat-insulating soft material and the second partition form a separate structure, or the heat-insulating soft material and the second partition are constructed as an integrated structure.

[0014] According to some embodiments of the present invention, the heat exchange coil has a spiral arrangement of pipes, and there is a spiral gap between two adjacent turns of pipes in the heat exchange coil. The first partition is provided with a spiral snap-fit ​​part in the circumferential direction, and the spiral snap-fit ​​part is screwed into the spiral gap.

[0015] According to some embodiments of the present invention, a plurality of support protrusions are provided on one side of the spiral snap-fit ​​portion at intervals along the spiral direction of the spiral snap-fit ​​portion, and the support protrusions abut against one side wall of the spiral gap.

[0016] According to some embodiments of the present invention, it further includes a housing, one end of which is provided with an exhaust channel and the other end with a combustion device. The heat exchange coil is disposed inside the housing, the combustion device is disposed corresponding to the combustion chamber, the exhaust channel communicates with the exhaust chamber, a communication gap is provided between the housing and the outer peripheral wall of the heat exchange coil, and the combustion chamber and the exhaust chamber are communicated through the communication gap.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a cross-sectional view of a heat exchanger that can reduce exhaust temperature according to an embodiment of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 1 An exploded view of a heat exchanger that can reduce exhaust temperature is shown. Figure 4 for Figure 1 A schematic diagram of the first partition of a heat exchanger that can reduce exhaust temperature is shown. Figure 5 for Figure 1 An external schematic diagram of a heat exchanger that can reduce exhaust temperature is shown.

[0019] Figure label: Heat exchange coil 100, inner cavity 110, combustion chamber 111, exhaust chamber 112, spiral gap 120, partition structure 200, first partition 210, spiral snap-fit ​​part 211, support protrusion 2111, second partition 220, heat insulation soft body 230, threaded fastener 240, outer shell 300, exhaust channel 310, connecting gap 320, combustion device 400. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] Reference Figures 1 to 3According to an embodiment of the present invention, a heat exchanger capable of reducing exhaust temperature includes a heat exchange coil 100 and a partition structure 200. The heat exchange coil 100 has an inner cavity. The partition structure 200 includes a first partition 210 and a second partition 220. The first partition 210 is disposed in the inner cavity and divides the inner cavity into a combustion chamber 111 and an exhaust chamber 112. The second partition 220 is located in either the combustion chamber 111 or the exhaust chamber 112 and is disposed opposite to the first partition 210. The partition structure 200 also includes a heat-insulating flexible body 230, which is disposed between the first partition 210 and the second partition 220, and the second partition 220 presses the heat-insulating flexible body 230 against the first partition 210. When the second partition 220 is located inside the combustion chamber 111, the second partition 220 and the heat-insulating soft material 230 can prevent the air inside the combustion chamber 111 from contacting the first partition 210, thus playing a heat insulation role and preventing the high-temperature air inside the combustion chamber 111 from transferring a large amount of heat to the air inside the exhaust chamber 112 through the first partition 210. The second partition 220 can also be set in the exhaust chamber 112. In this case, the second partition 220 and the heat-insulating soft material 230 can prevent the air inside the exhaust chamber 112 from contacting the first partition 210, thus playing a heat insulation role and similarly preventing the high-temperature air inside the combustion chamber 111 from transferring a large amount of heat to the air inside the exhaust chamber 112 through the first partition 210.

[0025] The heat exchanger provided by this utility model has a partition structure 200 that presses the heat-insulating soft body 230 tightly against the first partition 210 through the second partition 220. This allows the heat-insulating soft body 230 to effectively occupy the space between the first partition 210 and the second partition 220. When the first partition 210 undergoes thermal deformation, the heat-insulating soft body 230 can effectively prevent gaps from forming between the first partition 210 and the second partition 220, which would cause air in the combustion chamber 111 or the exhaust chamber 112 to come into large-area contact with the first partition 210. This solves the problem of heat loss caused by high-temperature air entering the gap between the partition and the heat-insulating brick in the prior art. Therefore, compared with existing heat exchangers, under the same conditions such as heat exchange coil 100 and gas power, the heat exchanger provided by this utility model can reduce the exhaust temperature, reduce energy waste caused by exhaust, and achieve higher energy efficiency.

[0026] Reference Figure 1 , Figure 3 and Figure 5According to some embodiments of this utility model, the heat exchanger further includes a housing 300. One end of the housing 300 is provided with an exhaust passage 310, and the other end is provided with a combustion device 400. The heat exchange coil 100 is disposed within the housing 300, and the combustion device 400 is disposed corresponding to the combustion chamber 111. The exhaust passage 310 communicates with the exhaust chamber 112. A connecting gap 320 is provided between the housing 300 and the outer peripheral wall of the heat exchange coil 100, and the combustion chamber 111 and the exhaust chamber 112 are connected through the connecting gap 320. Thus, the combustion gas directly burns in the combustion chamber 111 to generate heat. The hot air inside the combustion chamber 111 flows from the spiral gap 120 on the heat exchange coil 100 to the connecting gap 320, then from the end of the connecting gap 320 near the combustion chamber 111 to the end of the connecting gap 320 near the exhaust passage 310, then from the spiral gap 120 on the heat exchange coil 100 into the exhaust chamber 112, and finally is discharged from the exhaust passage 310.

[0027] In specific implementation scenarios, under the same conditions where the heat exchange coil 100 model has the same dimensions, the heat exchanger of this invention can achieve higher power operation—its exhaust temperature reaches the safety threshold significantly later than conventional designs, thus possessing overclocking capability. Furthermore, under the same power requirements, the dimensions of core components such as the heat exchange coil 100 of the heat exchanger of this invention can be further reduced, thereby effectively lowering manufacturing costs.

[0028] According to some embodiments of the present invention, the second partition 220 is configured as a heat-insulating brick. Thus, the second partition 220 and the heat-insulating soft body 230 together insulate the first partition 210, thereby improving the heat insulation effect. At the same time, the thickness of the heat-insulating soft body 230 can be reduced, thereby reducing the cost.

[0029] According to some embodiments of this utility model, the thermal insulation soft body 230 is an aluminosilicate ceramic fiber component. The aluminosilicate ceramic fiber component is elastic and can effectively occupy the space between the first partition 210 and the second partition 220 to avoid gaps. It has characteristics such as high temperature resistance, low thermal conductivity, and thermal shock resistance. Of course, in other embodiments, the above-mentioned thermal insulation soft body 230 may also be an elastic or flexible soft body made of other materials. For example, the thermal insulation soft body 230 may be an alumina fiber or other ceramic fiber.

[0030] According to some embodiments of the present invention, the thickness of the heat-insulating soft body 230 is between 1mm and 15mm, and the thickness of the heat-insulating brick is between 10mm and 30mm. The thickness of the heat-insulating soft body 230 can be 1mm, 2mm or 15mm, etc., and the thickness of the heat-insulating brick can be 10mm, 15mm or 30mm, etc.

[0031] In practical implementation, the lower the required exhaust temperature of the heat exchanger, the thicker the insulating flexible body 230 and the insulating brick can be; the higher the power of the heat exchanger, the thicker the insulating flexible body 230 and the insulating brick can be. The specific thickness parameters of the insulating flexible body 230 and the insulating brick can be determined according to the actual situation of the product, as long as the thickness of the insulating flexible body 230 and the insulating brick meets the power and exhaust temperature requirements of the heat exchanger. Therefore, in some embodiments, the thickness of the insulating flexible body 230 can also be 20mm, and the thickness of the insulating brick can also be 5mm, 40mm, etc.

[0032] Reference Figure 1 According to some embodiments of the present invention, the second partition 220 is fixedly installed on the first partition 210. Thus, by fixing the second partition 220 to the first partition 210, the second partition 220 can press the heat-insulating soft body 230 tightly against the first partition 210.

[0033] Reference Figure 1 and Figure 3 According to some embodiments of the present invention, the second partition 220 is installed on the first partition 210 by threaded fasteners 240. In this way, the second partition 220 is easy and simple to install, and is securely installed. It can also adjust the pressure of the second partition 220 on the heat insulation soft body 230.

[0034] It should be noted that in other embodiments, the second partition 220 can also be fixedly connected to the outer shell 300 or the heat exchange coil 100, and the outer shell 300 can apply force to the second partition 220, so that the second partition 220 presses the heat insulation soft body 230 tightly against the first partition 210.

[0035] Reference Figure 3 According to some embodiments of the present invention, the heat insulation soft body 230 and the second partition 220 form a separate structure, so the heat insulation soft body 230 and the second partition 220 are produced independently.

[0036] Of course, in other embodiments, the thermal insulation soft body 230 and the second partition 220 can also be constructed as an integrated structure by using hot melt welding, co-extrusion molding or other processes to form an integrated structure.

[0037] Reference Figure 1 , Figure 2 and Figure 4According to some embodiments of this utility model, the heat exchange coil 100 has a spiral arrangement of pipes, with a spiral gap 120 between adjacent turns of pipes in the heat exchange coil 100. A spiral locking part 211 is circumferentially provided on the first partition 210, and the spiral locking part 211 screws into the spiral gap 120. This allows the first partition 210 to be fixed inside the heat exchange coil 100, sealing the space between the first partition 210 and the inner wall of the cavity, effectively isolating the combustion chamber 111 from the exhaust chamber 112. During assembly, simply rotating the first partition 210 allows the spiral locking part 211 to screw into the spiral gap 120, making installation convenient and simple. Furthermore, rotating the first partition 210 allows for adjustment of its installation position.

[0038] Reference Figure 2 and Figure 4 According to some embodiments of the present invention, a plurality of support protrusions 2111 are provided on one side of the spiral snap-fit ​​part 211 at intervals along the spiral direction of the spiral snap-fit ​​part 211. The support protrusions 2111 abut against one side wall of the spiral gap 120. This reduces the contact area between the spiral snap-fit ​​part 211 and one side wall of the spiral gap 120, thereby reducing the resistance when rotating the first partition 210 and making the installation of the first partition 210 easier.

[0039] It should be noted that in some other embodiments, the first partition 210 can also be installed in other ways. For example, the first partition 210 is provided with locking bolts in the radial direction. By rotating the locking bolts, the locking bolts abut against the inner wall of the inner cavity, thereby fixing the first partition 210. At this time, the gap between the first partition 210 and the inner wall of the inner cavity can be shielded by the heat insulation soft material 230.

[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A heat exchanger capable of reducing exhaust gas temperature, characterized in that, include: The heat exchange coil (100) has an inner cavity; The partition structure (200) includes a first partition (210) and a second partition (220). The first partition (210) is disposed in the inner cavity and divides the inner cavity into a combustion chamber (111) and an exhaust chamber (112). The second partition (220) is located in the combustion chamber (111) or the exhaust chamber (112) and is disposed opposite to the first partition (210). The partition structure (200) further includes a heat-insulating soft body (230), which is disposed between the first partition (210) and the second partition (220), and the second partition (220) presses the heat-insulating soft body (230) against the first partition (210).

2. The heat exchanger capable of reducing exhaust gas temperature according to claim 1, characterized by, The second partition (220) is made of heat-insulating brick.

3. The heat exchanger capable of reducing exhaust gas temperature according to claim 1, characterized by The thermal insulation material (230) is an aluminum silicate ceramic fiber component.

4. The heat exchanger capable of reducing exhaust gas temperature according to claim 2, characterized by The thickness of the heat-insulating soft material (230) is between 1 mm and 15 mm, and the thickness of the heat-insulating brick is between 10 mm and 30 mm.

5. The heat exchanger capable of reducing exhaust gas temperature according to claim 1, characterized by The second partition (220) is fixedly installed on the first partition (210).

6. A heat exchanger for reducing exhaust temperature according to claim 5, characterized in that, The second partition (220) is installed on the first partition (210) by a threaded fastener (240).

7. The heat exchanger capable of reducing exhaust gas temperature according to claim 2, characterized by The thermal insulation soft body (230) and the second partition (220) form a separate structure, or the thermal insulation soft body (230) and the second partition (220) are constructed as an integrated structure.

8. The heat exchanger capable of reducing exhaust gas temperature according to claim 1, characterized by The heat exchange coil (100) has a spiral pipe arrangement, and there is a spiral gap (120) between two adjacent turns of the heat exchange coil (100). The first partition (210) is provided with a spiral snap-fit ​​part (211) in the circumferential direction, and the spiral snap-fit ​​part (211) is screwed into the spiral gap (120).

9. The heat exchanger capable of reducing exhaust gas temperature according to claim 8, characterized by The spiral snap-fit ​​portion (211) is provided with a plurality of support protrusions (2111) at intervals along the spiral direction of the spiral snap-fit ​​portion (2111), and the support protrusions (2111) abut against one side wall of the spiral gap (120).

10. The heat exchanger capable of reducing exhaust gas temperature according to any one of claims 1 to 9, characterized by, It also includes a housing (300), one end of which is provided with an exhaust passage (310), and the other end is provided with a combustion device (400). The heat exchange coil (100) is disposed inside the housing (300), and the combustion device (400) is disposed corresponding to the combustion chamber (111). The exhaust passage (310) is connected to the exhaust chamber (112). A communication gap (320) is provided between the outer peripheral wall of the housing (300) and the heat exchange coil (100), and the combustion chamber (111) and the exhaust chamber (112) are connected through the communication gap (320).

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