Combustion heat exchange component and combustion heat exchange equipment

Abstract

The present invention discloses a combustion heat exchange component and a combustion heat exchange device. The combustion heat exchange component includes: a heat exchanger, the heat exchanger having a housing, a heat exchange part is arranged inside the housing, a heat exchange medium channel is provided inside the heat exchange part, a catalytic burner installation space is formed above inside the housing and a preheating burner installation space is formed below, the heat exchange part includes a mounting heat exchange part and a stop heat exchange part; the catalytic burner is at least partially arranged in the catalytic burner installation space and is limited by the mounting heat exchange part; the preheating burner is at least partially arranged in the preheating burner installation space and is stopped and limited by the stop heat exchange part. According to the combustion heat exchange component of the present invention, the stop heat exchange part and the mounting heat exchange part are less affected by high temperature and will not undergo high temperature deformation, solving the problems that a common mounting bracket is deformed by high temperature and the preheating burner and the catalytic burner cannot be installed and fixed. At the same time, the distance between the preheating burner and the catalytic burner is not easily changed, which is beneficial to ensuring a good combustion effect.

Description

Technical Field

[0001] The present invention relates to the technical field of water heaters, and more particularly, to a combustion heat exchange component and a combustion heat exchange device. Background Art

[0002] Currently, some water heaters use a combination of a preheating burner and a catalytic burner to heat the water flowing through the heat exchanger. However, the installation support structure of the preheating burner and the catalytic burner is prone to high-temperature deformation due to being in a high-temperature environment for a long time, resulting in unreliable installation of the preheating burner and the catalytic burner.

[0003] In addition, in order to achieve good combustion effects, a certain distance needs to be maintained between the preheating burner and the catalytic burner. During the use of existing water heaters, due to the high-temperature deformation of the installation support structure, it is difficult to keep the distance between the preheating burner and the catalytic burner constant, affecting the combustion effect. Summary of the Invention

[0004] The present invention aims to at least partly solve one of the above technical problems in the prior art. To this end, the present invention provides a combustion heat exchange component, in which the installation support structures of the preheating burner and the catalytic burner are not affected by high temperatures and have high reliability.

[0005] The present invention also provides a combustion heat exchange device having the above combustion heat exchange component.

[0006] The combustion heat exchange component according to an embodiment of the present invention includes: a heat exchanger having a housing, a heat exchange part disposed in the housing, a heat exchange medium channel formed in the heat exchange part, a preheating burner installation space formed in the housing, and the heat exchange part including a stop heat exchange part disposed at the top of the preheating burner installation space; a catalytic burner, a part of the installation of the catalytic burner being disposed in the housing; and a preheating burner, at least a part of the preheating burner being disposed in the preheating burner installation space and being stopped and limited by the stop heat exchange part.

[0007] In the combustion heat exchange component according to an embodiment of the present invention, the stop heat exchange part and the installation heat exchange part are less affected by high temperatures and do not undergo high-temperature deformation, solving the problem that a common installation bracket is deformed by high temperatures and cannot install and fix the preheating burner and the catalytic burner. At the same time, the distance between the preheating burner and the catalytic burner is not easily changed, which is beneficial to ensuring better combustion effects and the working reliability of the combustion heat exchange component is relatively high.

[0008] According to some embodiments of the present invention, the area of the through-opening surrounded by the stop heat exchange part is smaller than the top area of the preheating burner.

[0009] According to some embodiments of the present invention, the stop heat exchange part is an elliptical heat exchange tube with its major axis arranged obliquely. In the direction of the major axis of the stop heat exchange part, the upper end of the stop heat exchange part extends towards the center of the housing and is higher than the top surface of the preheating burner, and the lower end of the stop heat exchange part extends away from the center of the housing and is lower than the top surface of the preheating burner.

[0010] Optionally, there are multiple stop heat exchange parts, and the multiple stop heat exchange parts are symmetrically arranged with respect to the preheating burner.

[0011] According to some embodiments of the present invention, the stop heat exchange part is an elliptical heat exchange tube with its major axis arranged horizontally, and the stop heat exchange part is higher than the top surface of the preheating burner.

[0012] According to some embodiments of the present invention, a catalytic burner installation space is further formed in the housing. The preheating burner installation space is located below the catalytic burner installation space. The heat exchange part includes an installation heat exchange part arranged in the catalytic burner installation space, and at least part of the catalytic burner is arranged in the catalytic burner installation space and is limited by the installation heat exchange part.

[0013] According to some embodiments of the present invention, the installation heat exchange part includes: a support heat exchange part, the support heat exchange part is located at the bottom of the catalytic burner installation space, and the support heat exchange part is used to support the catalytic burner and support the catalytic burner in the catalytic burner installation space.

[0014] According to some embodiments of the present invention, the support heat exchange part is divided into an intermediate group, a first side group, and a second side group. The support heat exchange part of the intermediate group supports the middle area of the bottom surface of the catalytic burner, the support heat exchange part of the first side group supports the junction of the bottom surface and the first side surface of the catalytic burner, and the support heat exchange part of the second side group supports the junction of the bottom surface and the second side surface of the catalytic burner.

[0015] According to some embodiments of the present invention, the support heat exchange part is the support heat exchange part of the intermediate group. The support heat exchange part of the intermediate group supports the middle area of the bottom surface of the catalytic burner, and on both sides of the support heat exchange part of the intermediate group are side heat exchange parts, and the side heat exchange parts are separated from the catalytic burner.

[0016] According to some embodiments of the present invention, the installation heat exchange part includes: a limiting heat exchange part, the limiting heat exchange part is located on both sides and / or the top of the catalytic burner installation space, and the limiting heat exchange part is used to limit the catalytic burner in the catalytic burner installation space.

[0017] According to another embodiment of the present invention, the combustion heat exchange device includes the above-mentioned combustion heat exchange assembly.

[0018] The combustion heat exchange device has the same advantages as the above-mentioned combustion heat exchange assembly over the prior art, and will not be elaborated here.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the combustion heat exchange assembly of the first embodiment;

[0021] Figure 2 is a schematic diagram of the combustion heat exchange device of the second embodiment;

[0022] Figure 3 is an exploded schematic diagram of the heat exchanger;

[0023] Figure 4 is an assembled perspective schematic diagram of the heat exchanger;

[0024] Figure 5 is an assembled front view of the heat exchanger;

[0025] Figure 6 is a left view of the heat exchanger;

[0026] Figure 7 is a right view of the heat exchanger;

[0027] Figure 8 is a schematic diagram of the right side plate.

[0028] Reference numerals:

[0029] Heat exchanger 10, housing 1, catalytic burner installation space 11, preheating burner installation space 12, installation hole 13 for ignition or detection device, viewing window 14, heat exchange part 2, stop heat exchange part 21, installation heat exchange part 24, support heat exchange part 22, intermediate group support heat exchange part 221, first side group support heat exchange part 222, second side group support heat exchange part 223, lower heat exchange tube 224, limit heat exchange part 23, left water box assembly 3, left side plate 31, left end plate 32, left water box 33, right water box assembly 4, right side plate 41, water passing hole 411, right end plate 42, right water box 43, front plate 51, rear plate 52, water inlet 61, water outlet 62, flue gas flow path 7, catalytic burner 20, preheating burner 30, premixing chamber 40. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where 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 by referring to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0031] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0032] In the present invention, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The following will be described in conjunction with Figures 1-8 in detail a combustion heat exchange assembly according to an embodiment of the present invention.

[0034] Referring to Figures 1-2 as shown, a combustion heat exchange assembly according to an embodiment of the present invention includes: a heat exchanger 10, a catalytic combustor 20, and a preheating combustor 30. The heat exchanger 10 has a housing 1, and a heat exchange portion 2 is provided inside the housing 1. A heat exchange medium channel is provided inside the heat exchange portion 2, and water is adapted to flow through the heat exchange medium channel. In other words, the heat exchange portion 2 is a tubular structure, and a water path communicating with an inlet pipe and an outlet pipe is formed in the tubular structure. The cold water in the inlet pipe is heated in the heat exchange portion 2 and then flows out from the outlet pipe.

[0035] A flue gas flow channel 7 is formed inside the housing 1, and a catalytic combustor installation space 11 and a preheating combustor installation space 12 are formed in the flue gas flow channel 7. The catalytic combustor 20 is at least partially disposed in the catalytic combustor installation space 11, and the preheating combustor 30 is at least partially disposed in the preheating combustor installation space 12. In this way, the high-temperature hot gas of the preheating combustor 30 and the catalytic combustor 20 can enter the flue gas flow channel 7 more, and thus transfer more heat to the heat exchange portion 2.

[0036] Reference Figures 1-2 As shown, the preheating burner installation space 12 is located below the catalytic combustion burner installation space 11. The heat generated by the preheating burner 30 radiates to the catalytic combustion burner 20, preliminarily heating the catalytic combustion burner 20 to an appropriate working temperature, causing catalytic combustion. In this way, when the air-gas mixture burns in the catalytic combustion burner 20, the combustion is sufficient, greatly reducing the amount of harmful gases such as CO and NOx generated due to incomplete combustion.

[0037] The heat exchange part 2 includes an installation heat exchange part 24 and a stop heat exchange part 21. The installation heat exchange part 24 is arranged in the catalytic combustion burner installation space 11, and the stop heat exchange part 21 is arranged at the top of the preheating burner installation space 12. Moreover, the catalytic combustion burner 20 is limited by the installation heat exchange part 24, and the preheating burner 30 is stopped and limited by the stop heat exchange part 21.

[0038] That is to say, a part of the heat exchange part 2 serves as the installation structure of the catalytic combustion burner 20, and a part of the heat exchange part 2 serves as the stop structure of the preheating burner 30, reducing the parts for additionally installing and fixing the preheating burner 30 and the catalytic combustion burner 20, saving materials and facilitating installation. And since both the installation heat exchange part 24 and the stop heat exchange part 21 are made of high-temperature resistant materials, when the installation heat exchange part 24 and the stop heat exchange part 21 are in a high-temperature environment for a long time, they will not undergo high-temperature deformation. Thus, it can ensure that the top position of the preheating burner 30 remains unchanged, and at the same time, the position of the catalytic combustion burner 20 is fixed. Therefore, the distance between the preheating burner 30 and the catalytic combustion burner 20 will not change, which is beneficial to ensuring a better combustion effect.

[0039] In addition, the stop heat exchange part 21 and the installation heat exchange part 24 are both support and limit structures, and the water flow in the pipe can take away the heat generated by the preheating burner 30 and the catalytic combustion burner 20, thus solving the problem that the ordinary installation brackets are deformed by high temperature and cannot install and fix the preheating burner 30 and the catalytic combustion burner 20.

[0040] Optionally, the catalytic combustion burner 20 is a flameless catalytic combustion burner. The flameless catalytic combustion burner has a catalytic combustion module. When the water heater works, after the gas is mixed with a certain amount of air, catalytic combustion occurs on the catalytic combustion module, generating a large amount of heat. The generated heat radiates to the heat exchange part 2, and the water flow in the heat exchange part 2 absorbs the heat of the high-temperature flue gas and is heated to hot water. The air flow direction is from bottom to top along the flue gas channel 7, ensuring that more heat generated by catalytic combustion reaches the heat exchange part 2 and improving the utilization rate of heat.

[0041] Specifically, referring to Figures 3-8 As shown, the housing 1 includes: a front plate 51, a rear plate 52, a left water box assembly 3 and a right water box assembly 4. The front plate 51, the rear plate 52, the left water box assembly 3 and the right water box assembly 4 enclose the above-mentioned flue gas channel 7.

[0042] Referring to Figures 3-5 as shown, one end (e.g., the left end) of the heat exchange part 2, the front plate 51, and the rear plate 52 is fixed to the left water box assembly 3, and a left water box 33 communicating with the heat exchange part 2 is formed in the left water box assembly 3. The other end (e.g., the right end) of the heat exchange part 2, the front plate 51, and the rear plate 52 is fixed to the right water box assembly 4, and a right water box 43 communicating with the heat exchange part 2 is formed in the right water box assembly 4.

[0043] The cold water in the water inlet pipe flows into the heat exchange part 2 through the water inlet 61. After being heated through heat exchange, it flows into the water outlet pipe through the water outlet 62, and then flows to the water outlet element (e.g., faucet) for users to use.

[0044] The water inlet 61 is provided on the left water box assembly 3 or the right water box assembly 4, and the water outlet 62 is also provided on the left water box assembly 3 or the right water box assembly 4. For example, in the embodiment shown in the present invention Figures 3-7 in the shown embodiment, both the water inlet 61 and the water outlet 62 are provided on the right water box assembly 4. Of course, in some embodiments not shown, the water inlet 61 may be provided on the right water box assembly 4 and the water outlet 62 may be provided on the left water box assembly 3.

[0045] The heat exchange parts 2 communicate with each other through the left water box 33 and the right water box 43. Referring to Figures 1-2 as shown, the numbers of the left water box 33 and the right water box 43 are both multiple.

[0046] The cold water in the water inlet pipe flows into one of the heat exchange parts 2 through the water inlet 61. The water in this heat exchange part 2 enters the left water box 33, then enters another heat exchange part 2 sharing the left water box 33 with this heat exchange part 2. After flowing through the corresponding heat exchange part 2, it enters the right water box 43, and then flows from this right water box 43 into the corresponding heat exchange part 2. After being heated through heat exchange, it finally flows into the water outlet pipe through the water outlet 62, and then flows to the water outlet element for users to use.

[0047] Preferably, the water outlet 62 is located above the water inlet 61. In this way, the water entering the right water box 43 from the water inlet 61 can flow out from the water outlet 62 after filling the entire right water box 43, which is beneficial to ensuring sufficient water volume in the heat exchange part 2. Of course, in some embodiments not shown, the water inlet 61 may be located above the water outlet 62.

[0048] Referring to Figure 3 as shown, the left water box assembly 3 includes: a left plate 31 and a left end plate 32. The left end of the heat exchange part 2 is fixed to the left plate 31. The left end plate 32 is arranged on the left side of the left plate 31, and a plurality of left water boxes 33 are formed between the left end plate 32 and the left plate 31.

[0049] The right water box assembly 4 includes: a right side plate 41 and a right end plate 42. The right end of the heat exchange part 2 is fixed to the right side plate 41. The right end plate 42 is arranged on the right side of the right side plate 41, and a plurality of right water boxes 43 are formed between the right end plate 42 and the right side plate 41.

[0050] Optionally, the heat exchange part 2 can be fixed to the left side plate 31 and the right side plate 41 by welding, thereby ensuring a firm connection between the heat exchange part 2 and the left side plate 31 and the right side plate 41.

[0051] As Figure 3 、 Figure 8 shown, water passing holes 411 are formed on the left side plate 31 and the right side plate 41, and the heat exchange part 2 communicates with the corresponding water box through the water passing holes 411.

[0052] In Figures 3-7 the illustrated embodiment, the left water box 33 is configured as a convex bulge stretched leftward on the left end plate 32, and the right water box 43 is configured as a convex bulge stretched rightward on the right end plate 42. Each left water box 33 communicates with the left ends of two of the plurality of heat exchange parts 2, and each right water box 43 communicates with the right ends of two of the plurality of heat exchange parts 2 to realize the series flow of water in the heat exchange part 2. Different convex bulge shapes can be designed according to the different sequences of water flowing through each heat exchange part 2.

[0053] Referring to Figures 4-5 shown, an installation hole 13 for installing an ignition needle or a detection device and a fire viewing window 14 for observing the internal combustion state are provided on the front plate 51, and an installation hole 13 for installing an ignition needle or a detection device is provided on the side surface of the housing 1 (such as the right water box assembly 4). Referring to Figure 4 、 Figure 7 shown, the installation hole 13 on the right water box assembly 4 penetrates through the right side plate 41 and the right end plate 42 at the same time.

[0054] For the combustion heat exchange assembly according to the embodiment of the present invention, the stop heat exchange part 21 and the installation heat exchange part 24 are less affected by high temperature and will not undergo high temperature deformation, solving the problem that ordinary installation brackets are deformed by high temperature and cannot install and fix the preheating burner 30 and the catalytic burner 20. At the same time, the distance between the preheating burner 30 and the catalytic burner 20 is not easily changed, which is beneficial to ensuring a good combustion effect, and the working reliability of the combustion heat exchange assembly is relatively high.

[0055] In some embodiments of the present invention, the area of the through-opening surrounded by the stop heat exchange part 21 is smaller than the top area of the preheating burner 30. Thus, when the preheating burner 30 is installed from bottom to top, the preheating burner 30 will not approach the catalytic burner 20 through the through-opening surrounded by the stop heat exchange part 21, thereby ensuring the accurate relative position between the preheating burner 30 and the catalytic burner 20. That is to say, the preheating burner 30 will not cross the through-opening surrounded by the stop heat exchange part 21 and reach above the stop heat exchange part 21.

[0056] Refer to Figures 1-2 As shown, the stop heat exchange part 21 is an elliptical heat exchange tube with its major axis arranged obliquely. In the major axis direction of the stop heat exchange part 21, the upper end of the stop heat exchange part 21 extends towards the center of the housing 1, and the upper end of the stop heat exchange part 21 is higher than the top surface of the preheating burner 30. The lower end of the stop heat exchange part 21 extends away from the center of the housing 1, and the lower end of the stop heat exchange part 21 is lower than the top surface of the preheating burner 30. In this way, the stop range of the stop heat exchange part 21 is relatively large, so as to be applicable to stopping preheating burners 30 of different lengths. For example, when the length of the preheating burner 30 is relatively small, the top of the preheating burner 30 is close to the upper end of the stop heat exchange part 21; when the length of the preheating burner 30 is relatively large, the top of the preheating burner 30 is close to the lower end of the stop heat exchange part 21. The stop heat exchange part 21 with its major axis arranged obliquely can be used to stop preheating burners 30 of various length dimensions.

[0057] Optionally, there are multiple stop heat exchange parts 21, and the multiple stop heat exchange parts 21 are symmetrically arranged with respect to the preheating burner 30. Thus, the symmetrically arranged stop heat exchange parts 21 exert a symmetric stop force on the preheating burner 30 to prevent the preheating burner 30 from tipping over.

[0058] In some embodiments not shown, the stop heat exchange part 21 is an elliptical heat exchange tube with its major axis arranged horizontally, and the stop heat exchange part 21 is higher than the top surface of the preheating burner 30. The stop heat exchange part 21 arranged horizontally can also provide a good stop and limit function for the preheating burner 30 to prevent the preheating burner 30 from approaching the catalytic burner 20.

[0059] Refer to Figures 1-2 As shown, the installation heat exchange part 24 includes: a support heat exchange part 22. The support heat exchange part 22 is located at the bottom of the catalytic burner installation space 11, and the support heat exchange part 22 is used to support the catalytic burner 20 and support the catalytic burner 20 in the catalytic burner installation space 11.

[0060] In Figure 1In the illustrated embodiment, the support heat exchange part 22 is divided into an intermediate group support heat exchange part 221, a first side group support heat exchange part 222, and a second side group support heat exchange part 223. The intermediate group support heat exchange part 221 is supported in the middle area of the bottom surface of the catalytic burner 20. The first side group support heat exchange part 222 is supported at the junction of the bottom surface and the first side surface of the catalytic burner 20. The second side group support heat exchange part 223 is supported at the junction of the bottom surface and the second side surface of the catalytic burner 20.

[0061] A lower heat exchange tube 224 is further provided directly below the first side group support heat exchange part 222 and the second side group support heat exchange part 223. The lower heat exchange tube 224, the first side group support heat exchange part 222, the second side group support heat exchange part 223, and the intermediate group support heat exchange part 221 enclose a lower space with an opening downward. The lower space is adapted to be configured as a lower combustion space, and the preheating burner installation space 12 is formed within the lower combustion space.

[0062] In Figure 2 the illustrated embodiment, the support heat exchange part 22 is the intermediate group support heat exchange part 221. The intermediate group support heat exchange part 221 is supported in the middle area of the bottom surface of the catalytic burner 20. On both sides of the intermediate group support heat exchange part 221 are side heat exchange parts, and the side heat exchange parts are separated from the catalytic burner 20. By adjusting the height of the intermediate group support heat exchange part 221, the distance between the catalytic burner 20 and the preheating burner 30 can be adjusted to meet the requirement of the optimal combustion distance.

[0063] In some embodiments of the present invention, the installation heat exchange part 24 further includes: a limiting heat exchange part 23. The limiting heat exchange part 23 is located on both sides and / or the top of the catalytic burner installation space 11, and the limiting heat exchange part 23 is used to limit the catalytic burner 20 to be arranged within the catalytic burner installation space 11. Referring to Figures 1-2 the illustration, the limiting heat exchange part 23 is located on both sides of the catalytic burner installation space 11.

[0064] In Figures 1-2 the illustrated embodiment, except for the stop heat exchange part 21, the long axes of the other heat exchange parts 2 can all be arranged vertically. Of course, in some unillustrated embodiments, the long axes of the other heat exchange parts 2 can all be arranged horizontally.

[0065] A premixing chamber 40 can be provided below the heat exchanger 10. Air and gas are mixed evenly in the premixing chamber 40 and then enter the preheating burner 30, which is beneficial to improving the combustion effect and achieving full combustion.

[0066] The combustion heat exchange device according to another embodiment of the present invention includes the combustion heat exchange assembly of the above embodiment. Optionally, the combustion heat exchange device can be a gas water heater or a gas wall-mounted boiler.

[0067] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0068] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A combustion heat exchange component, characterized in that, it includes: a heat exchanger, the heat exchanger has a housing, a heat exchange part is arranged in the housing, a heat exchange medium channel is arranged in the heat exchange part, a preheating burner installation space is formed in the housing, and the heat exchange part includes a stop heat exchange part arranged at the top of the preheating burner installation space; a catalytic burner, at least part of the catalytic burner is arranged in the housing; a preheating burner, at least part of the preheating burner is arranged in the preheating burner installation space and is stopped and limited by the stop heat exchange part; a premixing chamber is arranged below the heat exchanger, and air and gas are mixed evenly in the premixing chamber and then enter the preheating burner.

2. The combustion heat exchange component according to claim 1, characterized in that, the area of the through port surrounded by the stop heat exchange part is smaller than the top area of the preheating burner.

3. The combustion heat exchange component according to claim 1 or 2, characterized in that, the stop heat exchange part is an elliptical heat exchange tube with a long axis arranged obliquely. In the long axis direction of the stop heat exchange part, the upper end of the stop heat exchange part extends towards the center of the housing and is higher than the top surface of the preheating burner, and the lower end of the stop heat exchange part extends away from the center of the housing and is lower than the top surface of the preheating burner.

4. The combustion heat exchange component according to claim 3, characterized in that, there are multiple stop heat exchange parts, and the multiple stop heat exchange parts are symmetrically arranged with respect to the preheating burner.

5. The combustion heat exchange component according to claim 1 or 2, characterized in that, the stop heat exchange part is an elliptical heat exchange tube with a long axis arranged horizontally, and the stop heat exchange part is higher than the top surface of the preheating burner.

6. The combustion heat exchange component according to claim 1, characterized in that, a catalytic burner installation space is further formed in the housing, the preheating burner installation space is located below the catalytic burner installation space, the heat exchange part includes an installation heat exchange part arranged in the catalytic burner installation space, and at least part of the catalytic burner is arranged in the catalytic burner installation space and is limited by the installation heat exchange part.

7. The combustion heat exchange component according to claim 6, characterized in that, the installation heat exchange part includes: a support heat exchange part, the support heat exchange part is located at the bottom of the catalytic burner installation space, and the support heat exchange part is used to support the catalytic burner and support the catalytic burner in the catalytic burner installation space.

8. The combustion heat exchange component according to claim 7, characterized in that, the support heat exchange part is divided into an intermediate group, a first side group and a second side group. The support heat exchange part of the intermediate group supports the middle area of the bottom surface of the catalytic burner, the support heat exchange part of the first side group supports the junction of the bottom surface and the first side surface of the catalytic burner, and the support heat exchange part of the second side group supports the junction of the bottom surface and the second side surface of the catalytic burner.

9. The combustion heat exchange component according to claim 7, characterized in that, The supporting heat exchange part is the middle group supporting heat exchange part, the middle group supporting heat exchange part is supported on the middle area of the bottom surface of the catalytic combustor, the two sides of the middle group supporting heat exchange part are side heat exchange parts, and the side heat exchange parts are separated from the catalytic combustor.

10. The combustion heat exchange assembly according to any one of claims 6-9, wherein, the installation heat exchange part includes: a limiting heat exchange part, the limiting heat exchange part is located on both sides and / or the top of the catalytic combustor installation space, and the limiting heat exchange part is used for limiting the catalytic combustor in the catalytic combustor installation space.

11. A combustion heat exchange device, wherein, it includes the combustion heat exchange assembly according to any one of claims 1-10.

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