Turbulator, tube heat exchanger and gas water heating device

Abstract

The present application relates to a kind of spoiler, tube heat exchanger and gas water heater, and the spoiler includes partition plate.Partition plate is used to be installed in the water storage cavity of tube heat exchanger.Partition plate is equipped with at least two first installation port, at least two second installation port and at least two third installation port.First installation port is used to be threaded with the first heat exchange tube of tube heat exchanger, second installation port is used to be threaded with the second heat exchange tube of tube heat exchanger, and third installation port is used to be threaded with the third heat exchange tube of tube heat exchanger.In limited space, the tube wall area of heat exchange tube is increased, the heat exchange area between the tube wall of heat exchange tube and flue gas can be increased, and the heat exchange efficiency is improved.Heat exchange tube is arranged along the radial direction of partition plate, and the flow of water in split cavity is disturbed, when water flows from periphery to center or from center to periphery, heat exchange tube will change water flow state, increase the effective contact area of water and tube wall, and improve heat exchange effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas equipment, in particular to a spoiler, a tube heat exchanger and a gas water heater. BACKGROUND

[0002] Traditionally, a gas water heater has a heat exchanger for realizing heat exchange between combustion gas generated due to combustion of fuel and water, so as to be able to utilize the heated water for heating or supplying hot water.

[0003] The tube heat exchanger in the heat exchanger is formed as a structure of a tube shell, the tube shell is equipped with a plurality of heat exchange tubes inside, the combustion gas generated by combustion of a burner flows inside, and water flows outside the heat exchange tubes to realize heat exchange between the combustion gas and the water.

[0004] In order to improve the heat exchange efficiency of the heat exchange tubes, a plurality of spoiler baffles arranged at intervals for changing the flow direction of the water are equipped inside the tube shell, the heat exchange tubes penetrate the spoiler baffles and are respectively welded and connected with the end portions of the tube shell. Under the action of the spoiler baffles, the water can flow in the tube shell in a circuitous manner and contact and exchange heat with the heat exchange tubes in the process of flowing, which can improve the heat exchange efficiency to a certain extent, but the heat exchange efficiency of the conventional tube heat exchanger is not high and still needs to be improved. SUMMARY

[0005] The first technical problem solved by the present application is to provide a spoiler which can effectively improve the heat exchange efficiency.

[0006] The second technical problem solved by the present application is to provide a tube heat exchanger which can effectively improve the heat exchange efficiency.

[0007] The third technical problem solved by the present application is to provide a gas water heater which can effectively improve the heat exchange efficiency.

[0008] The first technical problem is solved by the following technical scheme:

[0009] A spoiler, comprising: a partition plate, the partition plate is used for being arranged in a water storage cavity of a tube heat exchanger; the partition plate is provided with at least two first installation openings, at least two second installation openings and at least two third installation openings, the first installation openings are used for penetrating first heat exchange tubes of the tube heat exchanger, the second installation openings are used for penetrating second heat exchange tubes of the tube heat exchanger, and the third installation openings are used for penetrating third heat exchange tubes of the tube heat exchanger.

[0010] The first mounting port, the second mounting port and the third mounting port are strip-shaped ports arranged along the radial direction of the partition plate, the length of the first mounting port is greater than the length of the second mounting port and the length of the third mounting port, at least two second mounting ports and at least one third mounting port are arranged between two adjacent first mounting ports, and the arrangement position of the second mounting port is closer to the edge of the partition plate than the arrangement position of the third mounting port.

[0011] The spoiler has the following beneficial effects compared with the background art:

[0012] When the spoiler is arranged in the water storage cavity of the tubular heat exchanger, the water storage cavity of the tubular heat exchanger can be divided into two or more sub-cavities, so that the water flows in the two or more sub-cavities in a meandering manner to improve the heat exchange effect. In addition, for the installation of the heat exchange pipe, the partition plate no longer has uniformly long mounting ports as in the prior art, but has first mounting ports with relatively long lengths and second mounting ports and third mounting ports with relatively short lengths. Correspondingly, the flat heat exchange pipe no longer has a uniform caliber size, but is arranged corresponding to the first mounting ports, the second mounting ports and the third mounting ports, that is, the first mounting ports, the second mounting ports and the third mounting ports are combined to better increase the pipe wall area of the heat exchange pipe in a limited space and better increase the heat exchange area between the pipe wall of the heat exchange pipe and the flue gas, thereby improving the heat exchange efficiency. In addition, the first heat exchange pipe, the second heat exchange pipe and the third heat exchange pipe are arranged along the radial direction of the partition plate to disturb the flow of water in the sub-cavities, that is, when the water flows from the periphery to the center or from the center to the periphery, the heat exchange pipe changes the flow state of the water to increase the effective contact area between the water and the pipe wall, thereby improving the heat exchange effect.

[0013] In one embodiment, the first mounting port, the second mounting port and the third mounting port are rectangular ports, long elliptical ports or waist-shaped holes.

[0014] The second technical problem is solved by the following technical solution:

[0015] The application discloses a tube type heat exchanger, which comprises at least two disturbance members, a first shell, a second shell, a heat exchange tube and a first installation hole.

[0016] Compared with the prior art, the tube type heat exchanger has the following beneficial effects:

[0017] The disturbance member has the beneficial effects, and the heat exchange tube is combined by the first heat exchange tube, the second heat exchange tube and the third heat exchange tube, the length of the tube port of the first heat exchange tube is greater than that of the second heat exchange tube and the third heat exchange tube, which can increase the tube wall area of the heat exchange tube in limited space, increase the heat exchange area between the tube wall of the heat exchange tube and flue gas, improve the heat exchange efficiency, and reduce the number of the heat exchange tubes as much as possible, thereby reducing the number of the first installation hole and the second installation hole, reducing the welding amount between the heat exchange tube and the end plate of the shell, and reducing the intergranular corrosion of the welding interface.

[0018] In one embodiment, the disturbance member is divided into a first disturbance member and a second disturbance member, the first disturbance member is provided with a first flow guide hole on the partition plate, and the second disturbance member is provided with a second flow guide hole on the partition plate; the first disturbance member and the second disturbance member divide the water storage cavity into at least three sub-cavities, and the first flow guide hole and the second flow guide hole are arranged in a staggered mode along the height direction of the second shell.

[0019] In one embodiment, the first flow guide hole is located in the middle region of the partition plate of the first disturbance member, and at least two third installation holes are arranged around the periphery of the first flow guide hole; and the second flow guide hole is arranged along the periphery of the first installation hole.

[0020] In one of the embodiments, the second flow guide hole is arranged at one end of the partition plate of the second spoiler near the first mounting hole.

[0021] In one of the embodiments, the partition plate of the first spoiler is further provided with at least two third flow guide holes, which are located within the circular ring formed by the third mounting hole, and the at least two third flow guide holes are arranged at intervals around the circumference of the first flow guide hole.

[0022] In one of the embodiments, the partition plate of the first spoiler is provided with at least two flow guide vanes, which are arranged one-to-one with the at least two third flow guide holes, and the flow guide vanes are arranged on the side of the third flow guide hole facing the center of the partition plate and are arranged inclined relative to the partition plate, and the flow guide vanes are used to guide the water flow out of the third flow guide hole to the edge of the partition plate of the first spoiler.

[0023] In one of the embodiments, the at least two flow guide vanes are arranged one-to-one with the at least two third mounting holes, or the flow guide vanes are arranged corresponding to the interval region between the adjacent two third mounting holes.

[0024] In one of the embodiments, a cooling cavity is formed between the side wall of the second shell and the first shell, which is in communication with the water storage cavity, and the cooling cavity is arranged around the combustion cavity.

[0025] In one of the embodiments, the cooling cavity and the combustion cavity are located above the water storage cavity, the water inlet pipe is arranged on the bottom end plate of the second shell, the water outlet pipe penetrates through the bottom end plate of the second shell, extends into the cooling cavity through the water storage cavity, and is in communication with the cooling cavity; the tubular heat exchanger further comprises a support arranged in the second shell, and the partition plate is fixedly arranged on the support; the support is provided with at least two first clamping grooves, and the edge of the partition plate is provided with second clamping grooves matched with the first clamping grooves; the support is further provided with a positioning block and a positioning end; the positioning block abuts against the first end plate of the first shell, and the positioning end abuts against the second end plate of the second shell; the tubular heat exchanger further comprises a flow equalizing ring arranged in the second shell and around the first shell, the flow equalizing ring is provided with at least two flow equalizing holes, the cooling cavity is in communication with the water storage cavity through the flow equalizing holes; the support is provided with at least one third clamping groove, and the edge of the flow equalizing ring is provided with fourth clamping grooves matched with the third clamping grooves.

[0026] The third technical problem is solved by the following technical scheme:

[0027] A gas water heating device comprises the tubular heat exchanger.

[0028] The gas water heating device has the beneficial effects compared with the background art:

[0029] Due to the above-mentioned spoiler, the beneficial effects of the spoiler are included. In addition, the heat exchange pipe adopts the combination of the first heat exchange pipe, the second heat exchange pipe and the third heat exchange pipe, and the length of the pipe opening of the first heat exchange pipe is greater than that of the second heat exchange pipe and the third heat exchange pipe. On the one hand, the pipe wall area of the heat exchange pipe can be better increased in the limited space, and the heat exchange area between the pipe wall of the heat exchange pipe and the flue gas can be better increased, so as to improve the heat exchange efficiency. On the other hand, the number of heat exchange pipes can be reduced as much as possible, so that the number of the first mounting hole and the second mounting hole can be reduced. Thus, the welding amount between the heat exchange pipe and the end plate of the shell can be reduced, so as to facilitate reducing intergranular corrosion of the welding interface. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 The structure diagram of the spoiler according to an embodiment of the present application is shown when the spoiler is a first spoiler;

[0031] Figure 2 The structure diagram of the spoiler according to another embodiment of the present application is shown when the spoiler is a first spoiler;

[0032] Figure 3 The structure diagram of the spoiler according to an embodiment of the present application is shown when the spoiler is a second spoiler;

[0033] Figure 4 The structure diagram of the tube-type heat exchanger according to an embodiment of the present application is shown;

[0034] Figure 5 The exploded structure diagram of the tube-type heat exchanger according to an embodiment of the present application is shown;

[0035] Figure 6 The internal structure diagram of the tube-type heat exchanger according to an embodiment of the present application is shown;

[0036] Figure 7 The sectional view of the tube-type heat exchanger according to an embodiment of the present application is shown;

[0037] Figure 8 The bottom view of the tube-type heat exchanger according to an embodiment of the present application is shown;

[0038] Figure 9 The structure diagram of the support in the tube-type heat exchanger according to an embodiment of the present application is shown;

[0039] Figure 10 The structure diagram of the flow equalizing ring in the tube-type heat exchanger according to an embodiment of the present application is shown;

[0040] Figure 11The structure diagram of the spoiler as the first spoiler in another embodiment of the present application is shown.

[0041] Reference signs:

[0042] 10, spoiler; 101, first spoiler; 102, second spoiler; 11, partition plate; 111, first mounting port; 112, second mounting port; 113, third mounting port; 114, first guide hole; 115, second guide hole; 116, third guide hole; 117, guide blade; 118, second clamping groove; 119, first clamping hole; 20, first shell; 21, combustion cavity; 22, first mounting hole; 23, first baffle; 231, first flange; 24, first end plate; 30, second shell; 31, water storage cavity; 311, split cavity; 32, water inlet pipe; 33, water outlet pipe; 34, second mounting hole; 35, cooling cavity; 36, second baffle; 361, second flange; 37, second end plate; 40, heat exchange pipe; 41, first heat exchange pipe; 42, second heat exchange pipe; 43, third heat exchange pipe; 50, support; 51, first clamping groove; 511, first protrusion; 52, positioning block; 53, positioning end; 54, third clamping groove; 541, second protrusion; 55, first protruding block; 56, second protruding block; 60, flow equalizing ring; 61, flow equalizing hole; 64, fourth clamping groove; 65, second clamping hole. DETAILED DESCRIPTION

[0043] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of ways beyond the specific embodiments described and claimed herein. It is therefore intended that the present application not be limited in scope to the specific embodiments disclosed but rather that the scope of the present application be measured by the broadest permissible interpretation of the claims that follow.

[0044] Reference Figure 1 , Figure 6 and Figure 7 , Figure 1 shows the structure diagram of the spoiler 10 as the first spoiler 101 in an embodiment of the present application, Figure 6 shows the internal structure diagram of the tube-type heat exchanger in an embodiment of the present application, Figure 7A cross-sectional view of a tube heat exchanger according to an embodiment of the present application is shown. The tube heat exchanger according to an embodiment of the present application comprises a turbulence member 10, which comprises a partition plate 11. The partition plate 11 is arranged in a water storage cavity 31 of the tube heat exchanger. The partition plate 11 is provided with at least two first installation openings 111, at least two second installation openings 112 and at least two third installation openings 113. The first installation openings 111 are arranged to pass through first heat exchange tubes 41 of the tube heat exchanger, the second installation openings 112 are arranged to pass through second heat exchange tubes 42 of the tube heat exchanger, and the third installation openings 113 are arranged to pass through third heat exchange tubes 43 of the tube heat exchanger.

[0045] The at least two first installation openings 111, the at least two second installation openings 112 and the at least two third installation openings 113 are respectively arranged in a circumferential interval on the partition plate 11. The first installation openings 111, the second installation openings 112 and the third installation openings 113 are all strip-shaped openings arranged in a radial direction of the partition plate 11. The length of the first installation openings 111 is greater than the length of the second installation openings 112 and the length of the third installation openings 113. At least two second installation openings 112 and at least one third installation opening 113 are arranged between two adjacent first installation openings 111. The arrangement position of the second installation openings 112 is closer to the edge of the partition plate 11 than the arrangement position of the third installation openings 113.

[0046] It should be noted that the length of the first installation openings 111 refers to the distance between two opposite walls of the first installation openings 111 in the radial direction of the partition plate 11. The length of the second installation openings 112 and the length of the third installation openings 113 are defined with reference to the first installation openings 111, which will not be described here.

[0047] When the spoiler 10 is installed in the water storage cavity 31 of the tube heat exchanger, the water storage cavity 31 of the tube heat exchanger can be divided into two or more sub-cavities 311, so that the water flows in the two or more sub-cavities 311 in a meandering manner, thereby improving the heat exchange effect. In addition, for the installation of the heat exchange tube 40, the partition plate 11 no longer has a uniformly lengthened installation opening as in the prior art, but has a first installation opening 111 with a relatively long length, and a second installation opening 112 and a third installation opening 113 with relatively short lengths. Correspondingly, the flat heat exchange tube 40 no longer has a uniform caliber size, but is provided corresponding to the first installation opening 111, the second installation opening 112, and the third installation opening 113, that is, in the form of combination of the first installation opening 111, the second installation opening 112, and the third installation opening 113, which can better increase the tube wall area of the heat exchange tube 40 in a limited space, and can better increase the heat exchange area between the tube wall of the heat exchange tube 40 and the flue gas, thereby improving the heat exchange efficiency. In addition, the first heat exchange tube 41, the second heat exchange tube 42, and the third heat exchange tube 43 are all arranged along the radial direction of the partition plate 11, which plays a spoiler role in the flow of water in the sub-cavity 311, that is, when the water flows from the periphery to the center or from the center to the periphery, the heat exchange tube 40 changes the water flow state, increases the effective contact area between the water and the tube wall, and improves the heat exchange effect.

[0048] It should be noted that the length of the second installation opening 112 and the length of the third installation opening 113 can be the same or different, which is not limited here. Correspondingly, the caliber size of the second heat exchange tube 42 and the caliber size of the third heat exchange tube 43 can be the same or different, which is not limited here.

[0049] Specifically, the length of the second installation opening 112 and the length of the third installation opening 113 are the same, so that the caliber size of the second heat exchange tube 42 and the caliber size of the third heat exchange tube 43 are the same, which is convenient for producing and manufacturing heat exchange tubes 40 of the same size, thereby improving the product production efficiency.

[0050] Please refer to Figures 1 to 3 Any one, Figure 2 a structure diagram of another embodiment of the spoiler 10 as a first spoiler 101 is shown, Figure 3The structure diagram of the second spoiler 102 of the embodiment of the present application is shown. Further, the first mounting port 111, the second mounting port 112 and the third mounting port 113 are rectangular ports, long oval ports or waist-shaped holes. In this way, the pipe port shape of the first heat exchange pipe 41 arranged in the first mounting port 111 is a rectangular port, a long oval port or a waist-shaped hole; the pipe port shape of the second heat exchange pipe 42 arranged in the second mounting port 112 is a rectangular port, a long oval port or a waist-shaped hole; and the pipe port shape of the third heat exchange pipe 43 arranged in the third mounting port 113 is a rectangular port, a long oval port or a waist-shaped hole. In addition, the first mounting port 111, the second mounting port 112 and the third mounting port 113 can also be other shapes, which are not limited here.

[0051] Referring to Figures 4 to 6 , Figure 4 The structure diagram of the tube type heat exchanger of an embodiment of the present application is shown. Figure 5 The exploded structure diagram of the tube type heat exchanger of an embodiment of the present application is shown. In an embodiment, a tube type heat exchanger, the tube type heat exchanger comprising at least two spoilers 10 of any of the above embodiments, the spoiler 10 separating the water storage cavity 31 into at least two sub-cavities 311.

[0052] The tube type heat exchanger further comprises a first shell 20, a second shell 30 and a heat exchange pipe 40.

[0053] Referring to Figures 5 to 8 , Figure 8 The bottom view of the tube type heat exchanger of an embodiment of the present application is shown. The first shell 20 has a combustion cavity 21 formed therein, and the first shell 20 is provided with a first mounting hole 22 in communication with the combustion cavity 21. The second shell 30 is sleeved outside the first shell 20, and a water storage cavity 31 is formed between the second shell 30 and the end of the first shell 20. The second shell 30 is provided with a water inlet pipe 32, a water outlet pipe 33 and a second mounting hole 34 in communication with the water storage cavity 31. The water inlet pipe 32 and the water outlet pipe 33 are both in communication with the water storage cavity 31.

[0054] The heat exchange pipe 40 is arranged in the water storage cavity 31, and the two ends of the heat exchange pipe 40 are in communication with the first mounting hole 22 and the second mounting hole 34, respectively. The heat exchange pipe 40 comprises at least two first heat exchange pipes 41, at least two second heat exchange pipes 42 and at least two third heat exchange pipes 43. The at least two first heat exchange pipes 41 are arranged one by one in the at least two first mounting ports 111, the at least two second heat exchange pipes 42 are arranged one by one in the at least two second mounting ports 112, and the at least two third heat exchange pipes 43 are arranged one by one in the at least two third mounting ports 113.

[0055] The tube heat exchanger described above, because it includes the turbulence member 10 described above, therefore includes the beneficial effects of the turbulence member 10, in addition, the heat exchange tube 40 adopts the form of combination of the first heat exchange tube 41, the second heat exchange tube 42 and the third heat exchange tube 43, the tube length of the first heat exchange tube 41 is greater than that of the second heat exchange tube 42 and the third heat exchange tube 43, on the one hand, it can better increase the tube wall area of the heat exchange tube 40 in the limited space, can better increase the heat exchange area between the tube wall of the heat exchange tube 40 and the flue gas, thereby improving the heat exchange efficiency, on the other hand, it can reduce the number of heat exchange tubes 40 as much as possible, thereby it can reduce the number of the first mounting hole 22 and the second mounting hole 34, in this way, it can reduce the welding amount between the heat exchange tube 40 and the end plate of the shell, thereby it is beneficial to reduce the intergranular corrosion of the welding interface.

[0056] Further, the turbulence member 10 is divided into a first turbulence member 101 and a second turbulence member 102. The partition plate 11 of the first turbulence member 101 is provided with a first flow guide hole 114, and the partition plate 11 of the second turbulence member 102 is provided with a second flow guide hole 115. The first turbulence member 101 and the second turbulence member 102 divide the water storage cavity 31 into at least two sub-cavities 311, the first flow guide hole 114 and the second flow guide hole 115 are arranged in a staggered manner in the height direction of the second shell 30, for the same sub-cavity 311, one of the first flow guide hole 114 and the second flow guide hole 115 is located at the water inlet position, and the other is located at the water outlet position. Because the water inlet position and the water outlet position at both ends of the sub-cavity 311 are distributed in a staggered manner in the height direction of the second shell 30, therefore, the water flow in the water storage cavity 31 is effectively disturbed, the original flow path of the water flow in the water storage cavity 31 is changed, the residence time of the water flow in the water storage cavity 31 is prolonged, the heat exchange efficiency between the water flow and the heat exchange tube 40 is improved, thereby accelerating the speed of water temperature rise.

[0057] It should be noted that the first flow guide hole 114 and the second flow guide hole 115 are arranged in a staggered manner in the height direction of the second shell 30 means that the projection of the first flow guide hole 114 on the bottom end plate of the second shell 30 and the projection of the second flow guide hole 115 on the bottom end plate of the second shell 30 are provided with a spacing in the height direction of the second shell 30.

[0058] Please refer to Figure 1 , Figure 3 and Figure 7, further, the first flow guide hole 114 is located in the middle region of the partition plate 11 of the first flow disturbing member 101, and the at least two third mounting holes 113 are arranged around the periphery of the first flow guide hole 114. The second flow guide hole 115 is arranged along the periphery of the first mounting hole 111. Therefore, the first flow guide hole 114 is arranged in the middle region of the partition plate 11, and the second flow guide hole 115 is arranged in the edge region of the partition plate 11. When the water flow flows into the water storage cavity 31, the water flow flows out through the second flow guide hole 115 in the edge region after passing through the first flow guide hole 114 in the middle region, so as to prolong the water flow path, so that the heat exchange efficiency between the water flow and the heat exchange tube 40 is effectively improved. In addition, the second flow guide hole 115 is arranged on the periphery of the first mounting hole 111, so that the water flow flowing out of the second flow guide hole 115 can flow close to the side wall of the first heat exchange tube 41 in the first mounting hole 111, so that the heat exchange force between the first heat exchange tube 41 and the water flow is strengthened, thereby further improving the heat exchange effect of the heat exchanger.

[0059] It should be noted that the arrangement of the second flow guide hole 115 along the periphery of the first mounting hole 111 includes two distribution structures: one, the second flow guide hole 115 and the first mounting hole 111 have a certain spacing, at this time, the size of the first mounting hole 111 is matched with the size of the side wall of the first heat exchange tube 41; two, the second flow guide hole 115 is communicated with the first mounting hole 111, so that in the manufacturing process of the second flow guide hole 115, only the size of the first mounting hole 111 is enlarged to be larger than the size of the first heat exchange tube 41, which is beneficial to simplify the manufacturing process of the tube type heat exchanger.

[0060] It should be noted that the number of the second flow guide hole 115 and the first mounting hole 111 is not limited in the embodiment, and the specific number configuration can be determined according to the actual product, for example: at least one second flow guide hole 115 is arranged on the periphery of each first mounting hole 111; of course, only part of the first mounting hole 111 can be provided with at least one second flow guide hole 115.

[0061] Please refer to Figure 3Further, the second flow guide hole 115 is arranged at one end side of the first mounting hole 111 close to the edge of the partition plate 11 of the second flow disturbing member 102. Specifically, each of the first mounting hole 111 close to the edge of the partition plate 11 of the two sides of one end is provided with a second flow guide hole 115, that is, the first mounting hole 111 close to the edge of the partition plate 11 of the middle part of the end surface is not provided with a second flow guide hole 115, but directly abuts against the pipe wall of the first heat exchange pipe 41, so as to realize the fixing effect of the first heat exchange pipe 41. It should be noted that the size of the second flow guide hole 115 is not limited, when the size of the second flow guide hole 115 is larger, the width size of the first mounting hole 111 close to the edge of the partition plate 11 of one end surface is smaller; when the size of the second flow guide hole 115 is smaller, the size of the first mounting hole 111 close to the edge of the partition plate 11 of one end surface is larger.

[0062] It can be understood that the second flow guide hole 115 is not limited to being arranged at the periphery of the first mounting hole 111, but the second flow guide hole 115 can also be arranged at the periphery of the second mounting hole 112, so that the water flow out of the second flow guide hole 115 can flow closely to the side wall of the second heat exchange pipe 42 in the second mounting hole 112, so that the heat exchange force between the second heat exchange pipe 42 and the water flow is enhanced, thereby further improving the heat exchange effect of the heat exchanger.

[0063] Please refer to Figure 1 and Figure 2 In one embodiment, the partition plate 11 of the first flow disturbing member 101 is further provided with at least two third flow guide holes 116. The third flow guide hole 116 is located in the circular ring formed by the third mounting hole 113, and the at least two third flow guide holes 116 are arranged at intervals around the circumference of the first flow guide hole 114. In this way, when the water flow flows into the water storage cavity 31, the water flow not only realizes the in-out in the first flow guide hole 114, but also realizes the in-out in the third flow guide hole 116 at the same time. The third flow guide hole 116 can increase the flow of the in-out water flow, and can realize the flow splitting effect of the water flow, so as to realize the better flow of the water flow to the middle part of the cavity 311 to the periphery.

[0064] Please refer to Figure 1 and Figure 2In one embodiment, the partition plate 11 of the first turbulence member 101 is provided with at least two guide vanes 117. The at least two guide vanes 117 are arranged one-to-one with the at least two third guide holes 116, and the guide vanes 117 are arranged on the side of the third guide holes 116 facing the center of the partition plate 11 and are inclined relative to the partition plate 11. The guide vanes 117 are used to guide the water flow out of the third guide holes 116 to the edge of the partition plate 11 of the first turbulence member 101. In this way, the guide vanes 117 play a turbulence role, can change the flow direction of the water passing through the third guide holes 116, make the water flow form a certain angle with the tube wall of the heat exchange pipe 40, effectively scour the tube wall, reduce the slow flow state in the vortex area, increase the effective contact area of the water flow with the heat exchange pipe 40, and thus improve the heat exchange effect.

[0065] Please refer to Figure 2 In one embodiment, the at least two guide vanes 117 are arranged one-to-one with the at least two third mounting holes 113. In this way, the tube wall of the heat exchange pipe 40 can be effectively scoured, the slow flow state in the vortex area can be reduced, the effective contact area of the water flow with the heat exchange pipe 40 can be increased, and thus the heat exchange effect can be improved.

[0066] It should be noted that the one-to-one arrangement of the guide vanes 117 and the third mounting holes 113 means that, on the one hand, one guide vane 117 corresponds to one third mounting hole 113, and on the other hand, the guide vanes 117 and the third mounting holes 113 are arranged along the radial direction of the partition plate 11.

[0067] Of course, as an optional solution, please refer to Figure 1 The guide vanes 117 and the third mounting holes 113 are in a corresponding number, but the guide vanes 117 do not need to be arranged along the radial direction of the partition plate 11, and the guide vanes 117 can face the interval region between adjacent two third mounting holes 113. Alternatively, please refer to Figure 11 , Figure 11 The structure diagram of the first turbulence member 101 is shown, and the guide vanes 117 are arranged corresponding to the interval region between adjacent two third mounting holes 113.

[0068] In one embodiment, the second shell 30 and the sidewall of the first shell 20 form a cooling cavity 35 which is in communication with the water storage cavity 31, and the cooling cavity 35 is arranged around the combustion cavity 21. In this way, since the cooling cavity 35 of the tube-type heat exchanger is arranged around the combustion cavity 21, the water flow (generally at a temperature of about 65°C) in the cooling cavity 35 will surround the combustion cavity 21, and fully contact the outer wall surface of the first shell 20 (when working, the combustion temperature in the combustion cavity can reach about 1200°C, which will cause thermal radiation to the wall surface of the first shell 20.) to exchange heat, effectively reducing the temperature of the outer surface of the first shell 20. In this way, compared with the conventional equipment, the tube-type heat exchanger of the present embodiment forms the cooling cavity 35 between the first shell 20 and the second shell 30, without the need for a coil form as used in conventional heat exchangers, effectively solving the problem of excessive water resistance caused by excessive length of the pipeline.

[0069] It should be noted that the arrangement of the cooling cavity 35 around the periphery of the combustion cavity 21 should be understood as: the cooling cavity 35 is arranged around the entire periphery of the combustion cavity 21, i.e. 360° around the combustion cavity 21, please refer to Figure 2 ; or, the cooling cavity 35 is arranged around part of the periphery of the combustion cavity 21, i.e. the cooling cavity 35 is not 360° around the combustion cavity 21. At this time, when the second shell 30 is sleeved on the outside of the first shell 20, at least one outer side surface of the first shell 20 is attached to at least one inner side surface of the second shell 30, causing the cooling cavity 35 to be or approximately be in the shape of "C".

[0070] Please refer to Figures 5 to 7 In one embodiment, the cooling cavity 35 and the combustion cavity 21 are located above the water storage cavity 31, the water inlet pipe 32 is arranged on the bottom end plate (i.e. corresponding to the second end plate 37 hereinafter) of the second shell 30, and the water outlet pipe 33 penetrates through the bottom end plate of the second shell 30, passes through the water storage cavity 31, and extends into the cooling cavity 35 and is in communication with the cooling cavity 35. In this way, on the one hand, the water inlet pipe 32 is in communication with the water storage cavity 31 after penetrating through the bottom end plate of the second shell 30, and is not arranged on the sidewall (corresponding to the second surrounding plate 36) of the second shell 30, so as not to occupy the lateral space of the second shell 30. Similarly, the water outlet pipe 33 also penetrates through the bottom end plate of the second shell 30, passes through the water storage cavity 31, and extends into the cooling cavity 35, so that the second shell 30 is not arranged on the sidewall of the second shell 30, and also does not occupy the lateral space of the second shell 30, thereby reducing the size of the tube-type heat exchanger. On the other hand, since the flue gas in the combustion cavity 21 is discharged downward through the heat exchange pipe 40, the condensed water generated on the inner wall of the heat exchange pipe 40 can be discharged downward together with the flue gas, maintaining good heat exchange effect. At the same time, the carbon and ash accumulation on the inner wall of the heat exchange pipe 40 is reduced, maintaining good heat exchange effect.

[0071] It should be noted that, as an optional solution, the water inlet pipe 32 is not limited to being arranged on the bottom end plate of the second shell 30, but can also be arranged on the side wall of the second shell 30. The water outlet pipe 33 is not limited to being arranged on the bottom end plate of the second shell 30, but can also be arranged on the top of the side wall of the second shell 30, and extends into the cooling cavity 35 through the top of the side wall of the second shell 30.

[0072] Please refer to Figures 5 to 7 In a specific embodiment, the first shell 20 includes a first surrounding plate 23 and a first end plate 24 arranged on the first surrounding plate 23. The second shell 30 includes a second surrounding plate 36 and a second end plate 37 arranged on the second surrounding plate 36. The second surrounding plate 36 is sleeved outside the first surrounding plate 23. The first surrounding plate 23 and the second surrounding plate 36 form the cooling cavity 35. The first end plate 24, the second end plate 37 and the second surrounding plate 36 form the water storage cavity 31. Therefore, the first shell 20 and the second shell 30 are both composed of a surrounding plate and an end plate. During assembly, the second surrounding plate 36 is sleeved outside the first surrounding plate 23, thereby forming the assembly of the cooling cavity 35 and the water storage cavity 31.

[0073] It should be noted that the water inlet pipe 32 and the water outlet pipe 33 can be arranged on the second surrounding plate 36, or on the second end plate 37. Of course, the water inlet pipe 32 can be arranged on the second surrounding plate 36, and the water outlet pipe 33 can be arranged on the second end plate 37. At the same time, the second mounting hole 34 is arranged on the second end plate 37, and the first mounting hole 22 is arranged on the first end plate 24.

[0074] Alternatively, the first end plate 24 is connected to the first surrounding plate 23 by screw connection, clamping, welding or one-piece forming. At the same time, the second end plate 37 is connected to the second surrounding plate 36 by screw connection, clamping, welding or one-piece forming. The one-piece forming can be achieved by extrusion, casting, press fitting or injection molding.

[0075] Please refer to Figures 5 to 7 Specifically, the second end plate 37 is provided with a folded edge arranged along the edge of the second end plate 37. The folded edge is attached to the second surrounding plate 36. In this way, during assembly of the second shell 30, the folded edge increases the bonding area between the second end plate 37 and the second surrounding plate 36, thereby improving the overall structural strength of the second shell 30. At the same time, the folded edge is also conducive to improving the sealing performance between the second end plate 37 and the second surrounding plate 36. Of course, in order to further improve the sealing performance of the second shell 30, a sealing material such as sealing glue, sealing rubber or waterproof tape can be arranged between the folded edge and the second surrounding plate 36.

[0076] Further, the first surrounding plate 23 is provided with a first flange 231. The second surrounding plate 36 is provided with a second flange 361. When the second surrounding plate 36 is sleeved outside the first surrounding plate 23, the second flange 361 abuts against the first flange 231, so that the first shell 20 and the second shell 30 are sealingly matched, and the cooling cavity 35 has a good sealing effect.

[0077] Of course, in other embodiments, only the first surrounding plate 23 is provided with the first flange 231, and when the second surrounding plate 36 is sleeved outside the first surrounding plate 23, one end of the second surrounding plate 36 abuts against the first flange 231; or the first surrounding plate 23 is not provided with the first flange 231, and the second surrounding plate 36 is provided with a flange folded inward, and when the second surrounding plate 36 is sleeved outside the first surrounding plate 23, the flange abuts against the side surface of the first surrounding plate 23.

[0078] Please refer to Figures 5 to 7 Further, the outer diameter of the partition plate 11 is close to the inner diameter of the second surrounding plate 36, and is matched with the inner diameter of the second surrounding plate 36, so that the first disturbance member 101 and the second disturbance member 102 arranged adjacently, the two partition plates 11 and the second surrounding plate 36 can form a split cavity 311 with relatively good sealing performance.

[0079] Please refer to Figure 5 and Figure 9 , Figure 9 The structure of the support 50 in the pipe-type heat exchanger is shown in the embodiment of the present application. In an embodiment, the pipe-type heat exchanger further comprises a support 50 arranged in the second shell 30. The partition plate 11 is fixedly arranged on the support 50. In this way, the support 50 supports at least two partition plates 11, and can avoid the partition plate 11 from moving up and down along the height direction of the second shell 30, so as to ensure that the interval between the two adjacent partition plates 11 is constant; in addition, during the installation process, the partition plate 11 can be directly arranged on the support 50, and then the support 50 and the partition plate 11 are arranged in the second shell 30 together, so that the partition plate 11 does not need to be fixed to the side wall of the second shell 30, thereby simplifying the assembly operation and improving the production efficiency. Of course, the support 50 is omitted, and the partition plate 11 is directly arranged in the second shell 30, which is also a feasible scheme, and is not limited herein.

[0080] Please refer to Figure 1 and Figure 9In one embodiment, the support 50 is provided with at least two first clamping grooves 51, and the edge of the partition plate 11 is provided with a second clamping groove 118 matched with the first clamping groove 51. In this way, on the one hand, the partition plate 11 is installed on the support 50 in a clamping manner, and the installation operation is relatively fast; on the other hand, after the partition plate 11 is installed on the support 50, the support 50 is located in the second clamping groove 118 of the partition plate 11, so that the support 50 does not protrude to the area outside the edge of the partition plate 11, that is, the edge of the partition plate 11 still abuts against the side wall of the second shell 30 and is not affected by the support 50. Of course, it can be understood that the partition plate 11 is not limited to being installed on the support 50 in a clamping manner, but can also be installed and fixed on the support 50 in a manner such as welding, riveting, bonding, screw connection, etc.

[0081] Please refer to Figure 1 and Figure 9 In one embodiment, the support 50 is provided with at least two first clamping grooves 51, and the edge of the partition plate 11 is provided with a second clamping groove 118 matched with the first clamping groove 51. In this way, on the one hand, the partition plate 11 is installed on the support 50 in a clamping manner, and the installation operation is relatively fast; on the other hand, after the partition plate 11 is installed on the support 50, the support 50 is located in the second clamping groove 118 of the partition plate 11, so that the support 50 does not protrude to the area outside the edge of the partition plate 11, that is, the edge of the partition plate 11 still abuts against the side wall of the second shell 30 and is not affected by the support 50. Of course, it can be understood that the partition plate 11 is not limited to being installed on the support 50 in a clamping manner, but can also be installed and fixed on the support 50 in a manner such as welding, riveting, bonding, screw connection, etc.

[0082] In one embodiment, at least two first clamping grooves 51 are arranged at one side of the support 50, and at least two first protrusions 55 are arranged at the other side of the support 50, and the at least two first protrusions 55 are arranged in one-to-one correspondence with the at least two first clamping grooves 51. The one-to-one correspondence of the first protrusions 55 and the first clamping grooves 51 means that, on the one hand, it refers to the correspondence in quantity, that is, one first protrusion 55 corresponds to one first clamping groove 51, and on the other hand, it refers to the correspondence in position, specifically, the height position of the first clamping groove 51 relative to the bottom end of the support 50 is the same as the height position of the center of the first protrusion 55 relative to the bottom end of the support 50. In this way, since the side of the support 50 is provided with the first protrusion 55, the first protrusion 55 and the first protrusion 511 can realize that the support 50 is more stably installed on the spoiler 11, which can enhance the structural strength of the support 50 and avoid the breakage of the first clamping groove 51. In addition, the first protrusion 55 abuts against the inner wall of the second shell 30, avoiding the side of the support 50 from abutting against the inner wall of the second shell 30 to cause poor flow of corner water, and saving materials.

[0083] In one embodiment, the support 50 is further provided with a positioning block 52 and a positioning end 53. The positioning block 52 abuts against the first end plate 24 of the first shell 20, and the positioning end 53 abuts against the second end plate 37 of the second shell 30. In this way, the support 50 will not slide up and down, and thus the partition plate 11 is relatively fixed in the water storage cavity 31 and will not slide up and down.

[0084] Please refer to Figure 5 、 Figure 6 、 Figure 9 and Figure 10 , Figure 10 which show the structure of the flow equalizing ring 60 in the pipe-type heat exchanger according to one embodiment of the present application. In one embodiment, the pipe-type heat exchanger further comprises a flow equalizing ring 60 arranged in the second shell 30 and around the first shell 20. The flow equalizing ring 60 is provided with at least two flow equalizing holes 61, and the cooling cavity 35 is in communication with the water storage cavity 31 through the flow equalizing holes 61. The support 50 is provided with at least one third clamping groove 54, and the edge of the flow equalizing ring 60 is provided with a fourth clamping groove 64 matched with the third clamping groove 54.

[0085] Therefore, when the water flow flows into the water storage cavity 31, the water flow is blocked by the flow equalizing ring 60, so that the water flow flows along the surface of the flow equalizing ring 60 and flows into the cooling cavity 35 from the at least two flow equalizing holes 61, thereby uniformly dispersing the water flow flowing into the cooling cavity 35 and ensuring that the water in the water storage cavity 31 and the water in the cooling cavity 35 are fully mixed.

[0086] Further, the wall of the third clamping groove 54 is provided with a second protrusion 541, the flow equalizing ring 60 is provided with a second clamping hole 65 corresponding to the third protrusion, and the second protrusion 541 is clamped and fixed in the second clamping hole 65.

[0087] Further, the third clamping groove 54 is arranged on one side of the support 50, and the other side of the support 50 is provided with a second protrusion 56 corresponding to the third clamping groove 54. In this way, the second protrusion 56 has a similar effect to the first protrusion 56, which will not be described again here.

[0088] Further, at least two flow uniformizing holes 61 are evenly and equidistantly arranged around the periphery of the first shell 20, so that the dispersion of the water flow is increased, and the mixing of the water flow in the cooling cavity 35 is further ensured to be uniform.

[0089] Specifically, the flow uniformizing ring 60 has a circular ring structure, the inner wall of the flow uniformizing ring 60 is adapted to the outer wall of the first surrounding plate 23 of the first shell 20, and the outer wall of the flow uniformizing ring 60 is adapted to the inner wall of the second surrounding plate 36 of the second shell 30.

[0090] Optionally, the flow uniformizing ring 60 is not limited to being fixedly arranged on the support 50, but for example, the connection mode between the first shell 20 and the second shell 30 is clamping, welding, bolt connection, pin connection, etc., which will not be limited here.

[0091] In one embodiment, a gas water heating device includes the tube-type heat exchanger of any of the above embodiments.

[0092] The gas water heating device described above, on the one hand, includes the flow disturbing member 10, so it has the beneficial effects of the flow disturbing member 10, and on the other hand, the water inlet position and the water outlet position on the two ends of the split cavity 311 are distributed in a staggered manner in the height direction of the second shell 30, so the water flow in the water storage cavity 31 is effectively disturbed, the original flow path of the water flow in the water storage cavity 31 is changed, the residence time of the water flow in the water storage cavity 31 is prolonged, and the heat exchange efficiency between the water flow and the heat exchange tube 40 is improved, thereby accelerating the water temperature rising speed. In addition, the heat exchange tube 40 adopts the combined form of the first heat exchange tube 41, the second heat exchange tube 42, and the third heat exchange tube 43, and the tube length of the first heat exchange tube 41 is greater than that of the second heat exchange tube 42 and the third heat exchange tube 43. On the one hand, the tube wall area of the heat exchange tube 40 can be better increased in the limited space, and the heat exchange area between the tube wall of the heat exchange tube 40 and the flue gas can be better increased, thereby improving the heat exchange efficiency. On the other hand, the number of the heat exchange tube 40 can be as small as possible, so that the number of the first mounting hole 22 and the second mounting hole 34 can be reduced, and thus the welding amount between the heat exchange tube 40 and the end plate of the shell can be reduced, thereby being beneficial to reducing intergranular corrosion of the welding interface.

[0093] The technical features of the above embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure.

[0094] The above embodiments only express several implementation manners of the present application, which are described in a more specific and detailed manner, but cannot be understood as a limitation on the patent scope of the present application. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

[0095] In addition, the terms "first", "second", "third" and the like in the description and in the claims are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or an indicated number. Therefore, a feature defined with "first", "second" or "third" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified and limited.

[0096] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or can be integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0097] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0098] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on the other element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there can be a middle element. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation.

Claims

1. A tube-type heat exchanger, characterized by, The tube type heat exchanger comprises a spoiler (10), which divides a water storage cavity (31) into at least two sub-cavities (311); The spoiler (10) comprises a partition plate (11) arranged in the water storage cavity (31) of the tube type heat exchanger; The partition plate (11) is provided with at least two first installation openings (111), at least two second installation openings (112) and at least two third installation openings (113), the first installation openings (111) are used for penetrating the first heat exchange pipes (41) of the tube type heat exchanger, the second installation openings (112) are used for penetrating the second heat exchange pipes (42) of the tube type heat exchanger, and the third installation openings (113) are used for penetrating the third heat exchange pipes (43) of the tube type heat exchanger; The first installation openings (111), the second installation openings (112) and the third installation openings (113) are respectively distributed in a circumferential direction on the partition plate (11), the first installation openings (111), the second installation openings (112) and the third installation openings (113) are strip-shaped openings arranged in a radial direction of the partition plate (11), the lengths of the first installation openings (111) are greater than the lengths of the second installation openings (112) and the lengths of the third installation openings (113), at least two second installation openings (112) and at least one third installation opening (113) are arranged between adjacent two first installation openings (111), the arrangement positions of the second installation openings (112) are closer to the edge of the partition plate (11) than the arrangement positions of the third installation openings (113); The tube type heat exchanger further comprises: A first shell (20) in which a combustion cavity (21) is formed, and the first shell (20) is provided with a first installation hole (22) in communication with the combustion cavity (21); A second shell (30) which is arranged outside the first shell (20), a water storage cavity (31) is formed between the second shell (30) and the end of the first shell (20), the second shell (30) is provided with a water inlet pipe (32), a water outlet pipe (33) and a second installation hole (34) in communication with the water storage cavity (31), and the water inlet pipe (32) and the water outlet pipe (33) are both in communication with the water storage cavity (31); Heat exchange pipes (40) are arranged in the water storage cavity (31), and two ends of the heat exchange pipes (40) are communicated with the first mounting hole (22) and the second mounting hole (34) respectively; the heat exchange pipes (40) comprise at least two first heat exchange pipes (41), at least two second heat exchange pipes (42) and at least two third heat exchange pipes (43); at least two first heat exchange pipes (41) are arranged in at least two first mounting ports (111) one by one, at least two second heat exchange pipes (42) are arranged in at least two second mounting ports (112) one by one, and at least two third heat exchange pipes (43) are arranged in at least two third mounting ports (113) one by one. The spoiler (10) is divided into a first spoiler (101) and a second spoiler (102), a first flow guide hole (114) is arranged on the partition plate (11) of the first spoiler (101), and a second flow guide hole (115) is arranged on the partition plate (11) of the second spoiler (102); the first spoiler (101) and the second spoiler (102) divide the water storage cavity (31) into at least three sub-cavities (311), the first flow guide hole (114) and the second flow guide hole (115) are arranged in a staggered manner along the height direction of the second shell (30); the first flow guide hole (114) is located in the middle region of the partition plate (11) of the first spoiler (101), and at least two third mounting ports (113) are arranged around the periphery of the first flow guide hole (114); At least two third flow guide holes (116) are further arranged on the partition plate (11) of the first spoiler (101), the third flow guide holes (116) are located in the annular ring formed by the third mounting ports (113), and at least two third flow guide holes (116) are arranged in a circumferential interval around the first flow guide hole (114); At least two flow guide vanes (117) are arranged on the partition plate (11) of the first spoiler (101), at least two third flow guide holes (116) and at least two flow guide vanes (117) are arranged one by one, the flow guide vane (117) is arranged on the side of the third flow guide hole (116) facing the center of the partition plate (11) and is arranged inclinedly relative to the partition plate (11), and the flow guide vane (117) is used for guiding the water flow outwards through the third flow guide hole (116) to the edge part of the partition plate (11) of the first spoiler (101).

2. The tube heat exchanger according to claim 1, characterized in that The first mounting port (111), the second mounting port (112) and the third mounting port (113) are rectangular ports, long oval ports or waist-shaped holes.

3. The tube heat exchanger according to claim 1, wherein The length dimension of the second mounting port (112) is the same as the length dimension of the third mounting port (113).

4. The tube heat exchanger according to claim 1, wherein The caliber dimension of the second heat exchange pipe (42) is the same as the caliber dimension of the third heat exchange pipe (43).

5. The tube heat exchanger according to claim 1, wherein The second flow guide hole (115) is arranged along the periphery of the first mounting port (111).

6. The tube heat exchanger according to claim 5, characterized in that The second flow guide hole (115) is arranged at one end of the first mounting port (111) close to the edge of the partition plate (11) of the second spoiler (102).

7. The tube heat exchanger according to claim 6, characterized in that The at least two flow guide vanes (117) are arranged in one-to-one correspondence with the at least two third mounting ports (113), or the flow guide vane (117) is arranged in correspondence with the interval region between the adjacent two third mounting ports (113).

8. The tube heat exchanger according to claim 1, wherein The second shell (30) and the side wall of the first shell (20) form a cooling cavity (35) in communication with the water storage cavity (31), and the cooling cavity (35) is arranged around the combustion cavity (21).

9. The tube heat exchanger according to claim 8, characterized in that The cooling cavity (35) and the combustion cavity (21) are located above the water storage cavity (31), the water inlet pipe (32) is arranged on the bottom end plate of the second shell (30), the water outlet pipe (33) penetrates the bottom end plate of the second shell (30), passes through the water storage cavity (31), extends into the cooling cavity (35), and is in communication with the cooling cavity (35); the tubular heat exchanger further comprises a support (50) arranged in the second shell (30), and the partition plate (11) is fixedly arranged on the support (50); the support (50) is provided with at least two first clamping grooves (51), and the edge of the partition plate (11) is provided with a second clamping groove (118) matched with the first clamping groove (51); the support (50) is further provided with a positioning block (52) and a positioning end (53); the positioning block (52) abuts against the first end plate (24) of the first shell (20), and the positioning end (53) abuts against the second end plate (37) of the second shell (30); the tubular heat exchanger further comprises a flow equalizing ring (60) arranged in the second shell (30) and around the first shell (20), the flow equalizing ring (60) is provided with at least two flow equalizing holes (61), the cooling cavity (35) is in communication with the water storage cavity (31) through the flow equalizing hole (61); the support (50) is provided with at least one third clamping groove (54), and the edge of the flow equalizing ring (60) is provided with a fourth clamping groove (64) matched with the third clamping groove (54).

10. A gas water heating apparatus, characterised in that, The tubular heat exchanger comprises the tubular heat exchanger according to any one of claims 1 to 9.

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