Condensing heat exchanger and hot water equipment

Abstract

The utility model discloses a condensing heat exchanger which comprises a shell, a condensing pipe and a spoiler, the condensing pipe and the spoiler are arranged in the shell, a smoke inlet and a smoke outlet are formed in the shell, the condensing pipe comprises a plurality of connected coil pipes, the spoiler comprises a first bending part and a second bending part which are connected with each other, and the first bending part and the second bending part are connected with each other. The first bending part is provided with a plurality of openings, each opening is provided with an inclined spoiler, and the first bending part is inserted between two adjacent coil pipes; a plurality of through holes are formed in the second bent part, and the second bent part and the smoke inlet are located on the same side. Due to the fact that the spoiler comprises the first bent part and the second bent part, the spoiler has a dual spoiler effect.

Description

Technical Field

[0001] The utility model relates to the technical field of condensing heat exchangers, in particular to a condensing heat exchanger and a hot water device. Background Art

[0002] Hot water equipment mainly includes water heaters and wall-mounted boilers. Generally, a condensing heat exchanger for absorbing waste heat from flue gas needs to be set in the hot water equipment. The existing condensing heat exchanger generally only includes an outer shell and a spiral condenser arranged in the outer shell. After the flue gas enters the outer shell of the condensing heat exchanger, it absorbs heat from the condenser tube, and the cold water in the condenser tube becomes hot to achieve secondary heat exchange. The heated water is input into the main heat exchanger for reheating, effectively utilizing the waste heat from flue gas. However, the existing condensing heat exchanger does not fully absorb the waste heat from flue gas, because the flue gas flows very fast after entering the outer shell of the condensing heat exchanger, and will be directly discharged upwards, and the contact time with the condenser tube is insufficient, resulting in low reverse heat exchange efficiency. Utility Model Content

[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a condensing heat exchanger and a hot water device with improved heat exchange efficiency.

[0004] According to the condensing heat exchanger of the first aspect of the utility model, the embodiment comprises a shell, a condensing tube and a spoiler arranged in the shell, the shell is provided with a smoke inlet and a smoke outlet, the condensing tube comprises a plurality of connected coils, the spoiler comprises a first bending portion and a second bending portion connected to each other, the first bending portion is provided with a plurality of openings, each of the openings is provided with an inclined spoiler, the first bending portion is inserted between two adjacent coils; the second bending portion is provided with a plurality of through holes, and the second bending portion and the smoke inlet are located on the same side.

[0005] According to some embodiments of the present invention, the second bent portion is opposite to the smoke inlet.

[0006] According to some embodiments of the present invention, there are a plurality of spoilers, and one spoiler is disposed between every two adjacent coils.

[0007] According to some embodiments of the utility model, one end of the condenser is spiraled from bottom to top to form a plurality of the coils, and the other end of the condenser passes through the centers of the plurality of the coils in sequence from top to bottom. A slot is provided on the spoiler, and the slot is clamped with the other end of the condenser.

[0008] According to some embodiments of the present invention, the spoiler is inclined downward or upward.

[0009] According to some embodiments of the present invention, the spoiler and the opening are an integral stamping structure.

[0010] According to some embodiments of the present invention, the plurality of openings and the plurality of spoilers are evenly distributed on the first bending portion.

[0011] According to some embodiments of the present invention, the plurality of through holes are evenly distributed on the second bending portion.

[0012] The hot water device according to the second aspect of the present invention includes the condensing heat exchanger as described above, and also includes a main heat exchanger, one end of the condensing tube is connected to the water inlet pipe of the main heat exchanger, and the other end of the condensing tube is connected to the cold water inlet pipe.

[0013] The condensing heat exchanger and heating device according to the embodiment of the utility model have at least the following beneficial effects: since the spoiler includes a first bending portion and a second bending portion, it has a double spoiler effect. First, since the second bending portion is located on the same side as the smoke inlet, when the smoke enters from the smoke inlet, the second bending portion will increase the resistance, so that the flow rate of the smoke is initially slowed down, so that the smoke stays in the shell for a longer time, increases the contact time with the condenser tube, and improves the heat exchange efficiency, which is the initial spoiler; secondly, since a spoiler is provided on the first bending portion arranged between two adjacent coils, the smoke forms a vortex under the action of the spoiler after entering, so that the high-temperature smoke and the condenser tube can fully exchange heat, further improving the heat exchange efficiency, thereby forming a double spoiler.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings;

[0016] Figure 1 It is the structural diagram of the condensing heat exchanger;

[0017] Figure 2 It is the structural diagram of the condenser tube and the spoiler;

[0018] Figure 3 This is a diagram of the structure of the spoiler. DETAILED DESCRIPTION

[0019] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0020] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and 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, and therefore cannot be understood as a limitation on the present invention.

[0021] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0022] Reference Figures 1 to 3 The utility model discloses a condensing heat exchanger, comprising a shell 10, a condensing tube 20 and a spoiler 30 arranged in the shell 10, the shell 10 is provided with a smoke inlet 11 and a smoke outlet 12, the condensing tube 20 comprises a plurality of connected coils, the spoiler 30 comprises a first bending portion 31 and a second bending portion 32 connected to each other, the first bending portion 31 is provided with a plurality of openings 311, each opening 311 is provided with an inclined spoiler 312, the first bending portion 31 is inserted between two adjacent coils; the second bending portion 32 is provided with a plurality of through holes 321, and the second bending portion 32 is located on the same side as the smoke inlet 11. Since the spoiler 30 comprises the first bending portion 31 and the second bending portion 32, it has a double spoiler effect. First, since the second bend 32 and the smoke inlet 11 are located on the same side, when the smoke enters from the smoke inlet 11, the second bend 32 will increase the resistance, so that the flow rate of the smoke is initially slowed down, allowing the smoke to stay longer in the shell 10, increasing the contact time with the condenser 20, and improving the heat exchange efficiency. This is the initial turbulence; secondly, since a spoiler 312 is provided on the first bend 31 between two adjacent coils, a vortex is formed after the smoke enters under the action of the spoiler 312, allowing the high-temperature smoke and the condenser 20 to fully exchange heat, further improving the heat exchange efficiency, thereby forming a double turbulence.

[0023] like Figure 1 In some embodiments, the second bend portion 32 is opposite to the smoke inlet 11. When the smoke enters from the smoke inlet 11, it will be directly blocked by the second bend portion 32, so that the flow rate of the smoke is initially slowed down, allowing the smoke to stay in the shell 10 longer, increasing the contact time with the condenser 20, and improving the heat exchange efficiency.

[0024] like Figure 2In some embodiments, one end of the condenser 20 spirals from bottom to top to form a plurality of coils, and the other end of the condenser 20 passes through the centers of the plurality of coils in sequence from top to bottom. A card slot 33 is provided on the spoiler 30, and the card slot 33 is engaged with the other end of the condenser 20, so that the connection between the spoiler 30 and the condenser plate is more stable.

[0025] In some embodiments, there are multiple spoilers 30, and a spoiler 30 is arranged between every two adjacent coils, which has a better spoiler effect, prolongs the residence time of the flue gas in the shell 10, and improves the heat exchange efficiency.

[0026] In some embodiments, the spoiler 312 is tilted downward or upward, and the spoiler 312 and the opening 311 are an integral stamping structure, which has a simple structure and is easy to process.

[0027] In some embodiments, the plurality of openings 311 and the plurality of spoilers 312 are evenly distributed on the first bending portion 31 , and the plurality of through holes 321 are evenly distributed on the second bending portion 32 , which has a better spoiler effect and is also easy to manufacture.

[0028] The utility model also includes a hot water device, including the condensing heat exchanger as described above, and also includes a main heat exchanger. One end of the condenser 20 is connected to the water inlet pipe of the main heat exchanger, and the other end of the condenser 20 is connected to the cold water inlet pipe. After the flue gas enters the shell 10, it absorbs heat by the condenser 20, and the cold water in the condenser 20 becomes hot to achieve secondary heat exchange. The heated water is input into the main heat exchanger for reheating, thereby effectively utilizing the waste heat of the flue gas.

[0029] It is easy for those skilled in the art to understand that the above preferred embodiments can be freely combined and superimposed without conflict.

[0030] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention specification and drawings under the utility model concept, or directly or indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A condensing heat exchanger, characterized in that: include: A shell (10) and a condenser (20) and a spoiler (30) arranged in the shell (10); the shell (10) is provided with a smoke inlet (11) and a smoke outlet (12); the condenser (20) includes a plurality of interconnected coils; the spoiler (30) includes a first bending portion (31) and a second bending portion (32) that are interconnected; the first bending portion (31) is provided with a plurality of openings (311); each of the openings (311) is provided with an inclined spoiler (312); the first bending portion (31) is inserted between two adjacent coils; the second bending portion (32) is provided with a plurality of through holes (321), and the second bending portion (32) and the smoke inlet (11) are located on the same side.

2. The condensing heat exchanger according to claim 1, characterized in that: The second bent portion (32) is opposite to the smoke inlet (11).

3. The condensing heat exchanger according to claim 1, characterized in that: There are a plurality of spoilers (30), and one spoiler (30) is disposed between every two adjacent coils.

4. The condensing heat exchanger according to claim 3, characterized in that: One end of the condenser (20) spirals from bottom to top to form a plurality of coils, and the other end of the condenser (20) passes through the centers of the plurality of coils in sequence from top to bottom. A slot (33) is provided on the spoiler (30), and the slot (33) is snap-connected with the other end of the condenser (20).

5. The condensing heat exchanger according to claim 1, characterized in that: The spoiler (312) is inclined downward or upward.

6. The condensing heat exchanger according to claim 1, characterized in that: The spoiler (312) and the opening (311) are an integral stamping structure.

7. The condensing heat exchanger according to claim 1, characterized in that: The plurality of openings (311) and the plurality of spoilers (312) are respectively and evenly distributed on the first bending portion (31).

8. The condensing heat exchanger according to claim 1, characterized in that: The plurality of through holes (321) are evenly distributed on the second bending portion (32).

9. A water heating device, comprising the condensing heat exchanger according to any one of claims 1 to 8, characterized in that: It also includes a main heat exchanger, one end of the condenser tube (20) is connected to the water inlet pipe of the main heat exchanger, and the other end of the condenser tube (20) is connected to the cold water inlet pipe.

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