Double-fixed-tube-plate heat exchanger of gas water heater

Abstract

The invention provides a double-fixed-tube-plate heat exchanger of a gas water heater, and belongs to the technical field of gas water heaters, the double-fixed-tube-plate heat exchanger comprises a main body shell and a heat exchange assembly, the heat exchange assembly is located in the main body shell, a water inlet pipe and a water outlet pipe are arranged on the two sides of the main body shell respectively, and the water inlet pipe and the water outlet pipe are connected and communicated through the heat exchange assembly; two groups of fixing seats are arranged on one side of the main body shell, two groups of mounting seats are arranged on the main body shell, the fixing seats are slidably connected with the mounting seats, and a plurality of groups of mounting holes are formed in the fixing seats; an auxiliary support is arranged on the other side of the main body shell, and a smoke outlet is formed in the main body shell. According to the heat exchanger, the two sets of fixing bases are arranged on one side of the main body shell and slidably connected with the mounting bases, and adjustment can be conducted according to use requirements; meanwhile, the auxiliary support is arranged on the other side of the main body shell, three fixing points are formed through cooperation of the auxiliary support and the main body shell, shaking or displacement of the heat exchanger in the working process can be effectively prevented, and it is ensured that the heat exchanger can stably conduct heat exchange work.

Description

Technical Field

[0001] The present invention belongs to the technical field of heat exchangers, and more specifically, particularly relates to a double fixed tube plate heat exchanger for a gas water heater. Background Art

[0002] The gas water heater produces a large amount of high-temperature flue gas by fully burning the gas. When the high-temperature flue gas contacts the heat exchanger, it is gradually transferred from the high-temperature flue gas to the inside of the heat exchanger, exchanging heat with the water flowing through the heat exchanger, thereby heating the water.

[0003] The tube-sheet heat exchanger is a type of gas water heater heat exchanger. It is composed of tube sheets, tube bundles and other components. Through the principle of heat transfer, it realizes heat exchange in the gas water heater and provides users with a steady supply of hot water. However, the traditional tube-sheet heat exchanger is usually fixed at a single point inside the gas water heater. There is only one fixed point. During use, the heat exchanger will be subjected to forces from different directions, such as the impact of water flow and the stress caused by thermal expansion and contraction. Long-term use can easily lead to the loosening of the fixed point, causing the position of the heat exchanger to shift, which may change the fluid flow state inside the heat exchanger, thereby reducing the heat exchange efficiency. At the same time, the single-point fixing point is also prone to fatigue damage, which shortens the service life of the heat exchanger and increases maintenance costs and safety hazards. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a double-fixed tube-sheet heat exchanger for a gas water heater to solve the technical problem in the prior art that the traditional tube-sheet heat exchanger is usually fixed at a single point, which is prone to loosening of the fixing point when subjected to external force, causing the position of the heat exchanger to shift; at the same time, the fixing point is also prone to fatigue damage, resulting in a shortened service life of the heat exchanger.

[0005] The purpose and effect of the double fixed tube plate heat exchanger for a gas water heater of the present invention are achieved by the following specific technical means:

[0006] A double fixed tube plate heat exchanger for a gas water heater comprises a main body shell and a heat exchange component, wherein the heat exchange component is located inside the main body shell, and a water inlet pipe and a water outlet pipe are respectively arranged on both sides of the main body shell, and the water inlet pipe and the water outlet pipe are connected and penetrated through the heat exchange component; two groups of fixing seats are arranged on one side of the main body shell, and two groups of mounting seats are arranged on the main body shell, and the fixing seats are slidably connected to the mounting seats, and a plurality of mounting holes are provided on the fixing seats; an auxiliary bracket is arranged on the other side of the main body shell, and a smoke exhaust port is opened on the main body shell.

[0007] According to a preferred embodiment, the heat exchange assembly includes two groups of mounting frames and multiple groups of tube sheets, the mounting frames are oppositely distributed, the tube sheets are longitudinally clamped between the two groups of mounting frames, multiple groups of buckles are arranged on the corresponding surfaces of the two groups of mounting frames, and both sides of the tube sheets are clamped in the multiple groups of buckles; multiple groups of limiting rods are arranged between the mounting frames, and the tube sheets are provided with limiting grooves corresponding to the limiting rods, the limiting rods are clamped in the limiting grooves, and the tube sheets are detachably connected to the mounting frames.

[0008] According to a preferred embodiment, the heat exchange component also includes multiple groups of tube bundles, multiple groups of tube sheets are arranged horizontally between two groups of mounting frames, and connecting through holes are opened on the tube sheets. The tube bundle is inserted into the connecting through holes and is located between the multiple groups of tube sheets. A limit plate is provided at one end of the tube bundle, and the limit plate is in contact with the outermost tube sheet of one group. The other end of the tube bundle is sleeved on a fixed valve, and the fixed valve is in contact with the outermost tube sheet of the other group. Connecting ports are provided on one side of the water inlet pipe and the water outlet pipe, and the two ends of the tube bundle are respectively connected to the connecting ports.

[0009] According to a preferred embodiment, two groups of heat-conducting baffles are arranged on one side of the tube sheet, and the tube bundle is located between the two groups of the heat-conducting baffles and in contact with the heat-conducting baffles; multiple groups of heat-conducting channels are arranged between the tube sheet and another group of the tube sheets, and multiple groups of guide plates are arranged on both sides of the tube sheet, and the guide plates are located in the heat-conducting channels and inclined upward, and a wavy surface is arranged on one side of the guide plates; a through groove is opened on the top of the tube sheet, and a smoke exhaust channel is formed between multiple groups of the tube sheets and the main body shell through the through groove, and the smoke exhaust port is located above the smoke exhaust channel.

[0010] According to a preferred embodiment, a mounting plate is provided at the bottom of the mounting frame, the bottom of the tube plate is in contact with the mounting plate, two groups of mounting blocks are provided on the mounting plate, and multiple groups of mounting sleeves are provided on both sides of the main shell, and the mounting blocks are clamped in the mounting sleeves; mounting grooves are provided on both sides of the mounting block, and mounting clamping blocks are provided in the mounting grooves, and a first spring is also provided in the mounting groove, and the mounting clamping block is connected to the mounting block through the first spring, and the mounting sleeve has a mounting clamping groove corresponding to the mounting clamping block, and the mounting clamping block is clamped in the mounting clamping groove, and the mounting frame is detachably connected to the main shell.

[0011] According to a preferred embodiment, a plurality of groups of fixing columns are arranged on the mounting seat, a plurality of groups of fixing sleeves are arranged on the fixing seat, the fixing columns are inserted into the fixing sleeves, fixing holes are opened on the fixing columns, a fixing groove is opened in the fixing sleeve corresponding to the fixing hole, a fixing bolt is inserted into the fixing groove and the fixing hole, the fixing seat is slidably connected to the mounting seat, and a second spring is arranged in the fixing sleeve.

[0012] According to a preferred embodiment, the auxiliary bracket includes a bracket base and a bracket platform, a protrusion is provided on one side of the main shell, an assembly groove is provided on the protrusion, the bracket base is clamped in the assembly groove, and is detachably connected to the main shell by multiple groups of bolts; the bracket platform is located on one side of the bracket base, a connecting plate is provided on one side of the bracket platform, two groups of connecting card plates are provided on one side of the bracket base, the two groups of connecting plates are clamped between the two groups of connecting card plates, multiple groups of positioning through holes are provided on the connecting card plates, and multiple groups of positioning holes are provided on the connecting plates corresponding to the positioning through holes, and the positioning bolts are passed through the positioning holes and one of the groups of positioning holes.

[0013] According to a preferred embodiment, a slot is provided on the support platform, a magnet plate is provided on one side of the support platform, and the magnet plate is clamped in the slot.

[0014] According to a preferred embodiment, an installation box is provided on one side of the main shell, and the installation box is arranged in a stepped manner. The installation cover is connected to the installation box to form two groups of installation cavities, one group of the installation cavities is provided with a gas sensor, and the other group of the installation cavities is provided with a controller, and both groups of the installation cavities are also provided with a heat insulation layer; a plurality of groups of ventilation grooves are provided on the installation cover, and one group of the installation cavities is connected with the outside through the ventilation grooves, and a solenoid valve is provided at the bottom of the water inlet pipe, and the controller is electrically connected to the gas sensor and the solenoid valve.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Two sets of mounting seats are arranged on one side of the main shell. The mounting seats cooperate with the fixed seats to achieve a slidable connection, and a second spring is arranged between the two. The second spring plays a buffering and regulating role. A mounting hole is opened on the fixed seat, and the bolt is inserted into the mounting hole to connect with the gas water heater, so that the heat exchanger is firmly installed inside the gas water heater. Through the cooperation of the mounting seat and the fixed seat, when the gas water heater is running, it may produce certain vibrations or be subjected to external forces in different directions. At this time, the slidably connected mounting seat and the fixed seat can adapt to this dynamic change. The second spring can effectively make a buffering action to reduce the impact on the heat exchanger. At the same time, an auxiliary bracket is arranged on one side of the main shell to play a supporting and auxiliary fixing role. The other side of the main shell is contacted with the gas water heater through the auxiliary bracket, which enhances the overall stability of the heat exchanger. The auxiliary bracket consists of a bracket base and a bracket stand. The positioning through hole, the positioning hole and the positioning bolt are cooperated between the two, so that it can be flexibly adjusted according to actual needs. A magnet plate is installed on the bracket. When the heat exchanger is installed, the magnet plate will be adsorbed on the inner wall of the gas water heater, further strengthening the fixing effect, preventing the heat exchanger from shaking or shifting during operation, ensuring that it can perform heat exchange work stably, and improving the working reliability and safety of the heat exchanger.

[0017] 2. The heat exchange assembly includes multiple sets of mounting frames, tube sheets and tube bundles. The tube sheets are longitudinally clamped between two sets of mounting frames. The buckles and limit rods on the mounting frames cooperate with the tube sheets to make the installation of the tube sheets more stable, and also ensure the position accuracy of the tube bundle during the heat exchange process. The tube bundle is inserted between multiple sets of tube sheets through the connecting holes on the tube sheets, and the two ends are respectively connected to the connection ports of the water inlet pipe and the water outlet pipe, forming a complete water flow channel. Two sets of heat-conducting baffles are set on one side of the tube sheet, so that the tube bundle is located between the heat-conducting baffles and in contact with them, increasing the area of ​​heat transfer and improving the heat transfer efficiency. At the same time, the multiple sets of heat-conducting channels set between the tube sheets and the guide plates on both sides of the tube sheets enable the guide plates to guide and hinder the flow of high-temperature flue gas after it enters the heat-conducting body, so that the high-temperature flue gas is retained in the channel for a longer time, thereby more fully exchanging heat with the tube sheets and other components, improving the heat exchange efficiency.

[0018] 3. An installation box is set on one side of the main shell, and a gas sensor and a controller are set in the installation box. A solenoid valve is set at the bottom of the water inlet pipe. The gas sensor can monitor the gas concentration inside the gas water heater in real time. When abnormal conditions such as gas leakage are detected, the signal will be transmitted to the controller. The controller is electrically connected to the gas sensor and the solenoid valve. After receiving the signal, it can control the solenoid valve to close in time, cut off the gas supply, and prevent safety accidents. At the same time, the insulation layer in the installation box can prevent heat from affecting electronic components such as gas sensors and controllers, ensuring their normal operation. The ventilation groove on the installation cover ensures that the gas sensor can accurately detect the gas concentration in the surrounding environment, thereby improving the safety of the gas water heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention after assembly;

[0020] Figure 2 It is a schematic diagram of the structure of the present invention after being split;

[0021] Figure 3 It is a schematic diagram of the structure after the mounting base and the fixing base are separated;

[0022] Figure 4 This is a schematic diagram of the structure of the auxiliary bracket after it is disassembled;

[0023] Figure 5 It is a schematic diagram of the structure of the heat exchange component after being disassembled;

[0024] Figure 6 Figure 2 A partial enlarged view of area a in the middle;

[0025] Figure 7 yes Figure 2 A partial enlarged view of area b;

[0026] Figure 8 yes Figure 5 A partial enlarged view of the middle c area;

[0027] Fig. 9 It is a schematic diagram of the structure of the tube sheet;

[0028] Fig.10 This is the principle block diagram of the controller.

[0029] In the figure, the corresponding relationship between the component names and the reference numerals is as follows:

[0030] 11. Main body shell; 12. Mounting seat; 13. Smoke outlet; 14. Mounting sleeve; 15. Mounting slot; 16. Fixing column; 17. Fixing hole; 21. Water inlet pipe; 22. Water outlet pipe; 23. Connecting port; 24. Mounting box; 25. Mounting cover; 26. Gas sensor; 27. Controller; 28. Insulation layer; 29. ​​Ventilation slot; 31. Fixing seat; 32. Mounting hole; 33. Fixing sleeve; 34. Fixing slide; 35. Fixing bolt; 36. Magnet plate; 401. Mounting frame; 402. Tube plate ; 403, buckle; 404, limit rod; 405, limit groove; 406, tube bundle; 407, connecting through hole; 408, limit plate; 409, fixed valve; 410, heat conduction baffle; 411, guide plate; 412, through groove; 413, mounting plate; 414, mounting block; 415, mounting groove; 416, mounting block; 51, bracket base; 52, bracket table; 53, protrusion; 54, assembly groove; 55, connecting plate; 56, connecting card plate; 57, positioning through hole; 58, positioning hole; 59, positioning bolt. DETAILED DESCRIPTION

[0031] The following is a further detailed description of the embodiments of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the technical solutions of the present invention, but cannot be used to limit the scope of protection of the present invention.

[0032] Example:

[0033] like Figures 1 to 9As shown, the present invention provides a double fixed tube plate heat exchanger for a gas water heater, comprising a main body shell 11 and a heat exchange component. The heat exchange component is located inside the main body shell 11 and plays a core role in heat exchange. A water inlet pipe 21 and a water outlet pipe 22 are respectively arranged on both sides of the main body shell 11. The water inlet pipe 21 is responsible for introducing the water to be heated into the heat exchanger, and the water outlet pipe 22 outputs the hot water heated by the heat exchange component. The water inlet pipe 21 and the water outlet pipe 22 are tightly connected and connected through the heat exchange component to form a complete water flow circulation path. Two groups of fixing seats 31 are arranged on one side of the main body shell 11. The fixing seats 31 play a role in installing and fixing the heat exchanger. Two groups of mounting seats 12 are correspondingly arranged on the main body shell 11. The fixing seats 31 and the mounting seats 12 are slidably connected, so that a certain position adjustment can be made according to actual conditions during the installation process to better adapt to the structural layout inside the gas water heater. Multiple groups of mounting holes 32 are opened on the fixing seat 31. Through these mounting holes 32, connecting parts such as bolts can be passed through, so that the heat exchanger can be installed inside the gas water heater. An auxiliary bracket is provided on the other side of the main shell 11, which further enhances the stability of the heat exchanger in the gas water heater. A smoke exhaust port 13 is also provided on the main shell 11 to exhaust the high-temperature smoke generated after the combustion of the gas, to ensure that the smoke can be discharged smoothly during the heat exchange process, to maintain the pressure balance inside the heat exchanger and the smooth heat transfer, thereby ensuring that the heat exchanger can operate efficiently and stably, and provide users with a continuous and reliable hot water supply.

[0034] Figure 2 , Figure 5 , Fig. 9As shown, the heat exchange assembly has two sets of mounting frames 401 and multiple sets of tube sheets 402. The mounting frames 401 are arranged opposite to each other, providing a stable support structure for the tube sheets 402 and the tube bundle 406. The tube sheets 402 are longitudinally clamped between the two sets of mounting frames 401. Multiple sets of buckles 403 are arranged on the corresponding surfaces of the two sets of mounting frames 401. Both sides of the tube sheets 402 are clamped in these buckles 403, so that the tube sheets 402 are fixed on the mounting frames 401 more firmly and are not easily displaced. At the same time, multiple sets of limiting rods 404 are arranged between the mounting frames 401. The tube sheets 402 are provided with limiting grooves 405 corresponding to the limiting rods 404. The limiting rods 404 are clamped in the limiting grooves 405, which further limit the movement of the tube sheets 402 and ensure their position accuracy during the heat exchange process. This detachable connection arrangement facilitates replacement and repair when the tube sheets 402 are damaged or require maintenance. Multiple groups of tube sheets 402 are arranged transversely between two groups of mounting frames 401. Connection holes 407 are provided on the tube sheets 402. The tube bundles 406 are arranged between the multiple groups of tube sheets 402 through the connection holes 407, forming heat exchange channels. A limit plate 408 is provided at one end of the tube bundle 406. The limit plate 408 contacts one of the outermost tube sheets 402 to prevent the tube bundle 406 from slipping out from one end. The other end of the tube bundle 406 is sleeved on a fixed valve 409. The fixed valve 409 contacts another group of outermost tube sheets 402, which also plays a role in fixing the tube bundle 406. A connection port 23 is provided on one side of the water inlet pipe 21 and the water outlet pipe 22. Both ends of the tube bundle 406 are connected to the connection port 23, so that water can flow smoothly through the tube bundle 406. When the gas water heater is working, cold water enters the tube bundle 406 from the water inlet pipe 21, exchanges heat with the tube sheet 402 while flowing in the tube bundle 406, and flows out from the water outlet pipe 22 after being heated to provide hot water for the user. At the same time, magnet rings are provided on both the two groups of connection ports 23 and the main shell 11. The magnet rings on the connection ports 23 attract the magnet rings on the main shell 11, so that the water inlet pipe 21 and the water outlet pipe 22 can automatically fit the main shell 11 during the installation process, thereby facilitating the installation operation and improving the efficiency and accuracy of the installation.

[0035] Two groups of heat-conducting baffles 410 are arranged on one side of the tube sheet 402, and the tube bundle 406 is located exactly between the two groups of heat-conducting baffles 410 and in contact with the heat-conducting baffles 410, which increases the area of ​​heat transfer, so that the heat in the tube bundle 406 can be more efficiently transferred to the tube sheet 402; at the same time, multiple groups of heat-conducting channels are arranged between the tube sheet 402 and another group of tube sheets 402, which further optimizes the heat conduction path between the tube sheets 402. Multiple groups of guide plates 411 are arranged on both sides of the tube sheet 402. The guide plates 411 are located in the heat-conducting channels and are arranged to be tilted upwards. A wave surface is also arranged on one side. When the high-temperature flue gas enters the heat-conducting channels, the guide plates 411 can effectively guide and hinder the flow of the flue gas, so that the high-temperature flue gas remains in the channels for a longer time, so as to more fully exchange heat with the tube sheet 402 and other components, thereby improving the heat exchange efficiency. A through groove 412 is provided on the top of the tube sheet 402, and a smoke exhaust channel is formed between the multiple groups of tube sheets 402 and the main shell 11 through the through groove 412, and the smoke exhaust port 13 is located above the smoke exhaust channel, ensuring that the high-temperature smoke generated by the combustion of gas can be discharged smoothly. At the same time, the waste heat of the smoke can be further utilized during the exhaust process to improve energy utilization.

[0036] like Figure 2 , Figure 7 , Figure 8 As shown, a mounting plate 413 is provided at the bottom of the mounting frame 401, and the bottom of the tube sheet 402 contacts the mounting plate 413, providing a stable support for the tube sheet 402. Two groups of mounting blocks 414 are provided on the mounting plate 413, and multiple groups of mounting sleeves 14 are provided on both sides of the main shell 11. The mounting blocks 414 are clamped in the mounting sleeves 14, realizing the preliminary connection between the mounting frame 401 and the main shell 11. Mounting grooves 415 are provided on both sides of the mounting block 414, and mounting clamping blocks 416 are provided in the mounting grooves 415. A first spring is also provided in the mounting grooves 415, and the mounting clamping blocks 416 are connected to the mounting block 414 through the first spring. When the mounting block 414 is inserted into the mounting sleeve 14, the mounting clamping blocks 416 are clamped in the mounting clamping grooves 15 corresponding to the mounting sleeve 14 under the action of the first spring, so that the connection between the mounting frame 401 and the main shell 11 is more stable.

[0037] like Figure 3 , Figure 4As shown, the mounting seat 12 is provided with multiple groups of fixing columns 16, and the fixing seat 31 is correspondingly provided with multiple groups of fixing sleeves 33. The fixing columns 16 are inserted into the fixing sleeves 33 to achieve the initial connection and positioning of the two. The fixing columns 16 are provided with fixing holes 17, and the fixing sleeves 33 are provided with fixing grooves 34 corresponding to the fixing holes 17. By inserting the fixing bolts 35 into the fixing grooves 34 and the fixing holes 17, the stability of the connection is further enhanced. Moreover, the fixing seat 31 and the mounting seat 12 are slidably connected. This slidability enables fine-tuning according to actual needs when installing the heat exchanger to adapt to different installation environments and requirements. At the same time, a second spring is provided in the fixing sleeve 33. When the heat exchanger is subjected to external impact or vibration, the second spring can play a buffering role, absorb and disperse energy, protect the structure of the heat exchanger from damage, and extend its service life.

[0038] The auxiliary bracket is composed of a bracket base 51 and a bracket stand 52. An assembly groove 54 is provided on the protrusion 53 on one side of the main shell 11. The bracket base 51 is clamped in the assembly groove 54 and is detachably connected to the main shell 11 through multiple sets of bolts. This connection method not only ensures the firmness of the connection, but also facilitates disassembly, maintenance or replacement when necessary. The bracket stand 52 is located on one side of the bracket base 51. The connecting plate 55 on one side of the bracket stand 52 is clamped between two sets of connecting clamps 56 on one side of the bracket base 51. The multiple sets of positioning through holes 57 on the connecting clamps 56 are connected to the positioning holes 58 on the connecting plate 55 through positioning bolts 59, so that the bracket stand 52 can be adjusted in angle or position according to actual conditions to better adapt to the internal structure and support requirements of the gas water heater. In addition, a slot is provided on the bracket 52 for installing the magnet plate 36. The magnet plate 36 is clamped in the slot. When the heat exchanger is installed in the gas water heater, the magnet plate 36 can be adsorbed on the inner wall of the water heater, further enhancing the fixing effect of the auxiliary bracket, thereby improving the stability and safety of the entire heat exchanger during operation.

[0039] like Figure 2 , Figure 6As shown, a mounting box 24 is arranged on one side of the main housing 11, which is arranged in a stepped manner. The stepped arrangement not only makes the mounting box 24 more regular in appearance, but more importantly, it is more reasonable in space utilization, which provides convenience for the installation and layout of internal components. The mounting cover 25 is connected to the mounting box 24 to form two groups of mounting cavities, providing independent installation spaces for different electronic components. A gas sensor 26 is arranged in one group of mounting cavities, which can monitor the gas concentration inside the gas water heater in real time. The gas sensor 26 can use an MQ-2 gas sensor; a controller 27 is arranged in the other group of mounting cavities, which is responsible for intelligent control of the entire system. The controller 27 can use an Ardu i no Uno controller. In order to ensure the normal operation of the gas sensor 26 and the controller 27, a heat insulation layer 28 is also specially arranged in the two groups of mounting cavities. The heat insulation layer 28 can effectively block the transfer of heat, prevent the high temperature generated when the gas water heater is working from damaging the electronic components, ensure that they work in a stable temperature environment, and extend their service life. The mounting cover 25 is provided with a plurality of ventilation grooves 29, one of which is connected to the outside through the ventilation grooves 29, so that the gas sensor 26 can accurately sense the changes in gas concentration in the surrounding environment. A solenoid valve is provided at the bottom of the water inlet pipe 21, and the controller 27 is electrically connected to the gas sensor 26 and the solenoid valve. When the gas sensor 26 detects an abnormal situation such as a gas leak, it will immediately transmit a signal to the controller 27, and the controller 27 will immediately respond and control the solenoid valve to close in time, thereby quickly cutting off the gas supply, effectively preventing the occurrence of safety accidents, and greatly improving the safety of the gas water heater.

[0040] The specific usage and function of this embodiment are as follows:

[0041] When in use, press the start button of the gas water heater, the ignition device starts working, the gas combustion generates high-temperature flue gas, the high-temperature flue gas enters the main shell 11 of the heat exchanger, passes through the exhaust channel formed by the through groove 412 on the tube sheet 402, and is discharged from the exhaust port 13. At the same time, cold water enters the tube bundle 406 from the water inlet pipe 21, and exchanges heat with the tube sheet 402 during the flow in the tube bundle 406. The heat-conducting baffle 410 on one side of the tube sheet 402, the heat-conducting channel between the tube sheet 402, and the guide plate 411 and other structures can optimize heat transfer and heat the cold water quickly. The heated hot water flows out from the outlet pipe 22 for use by the user. The user can adjust the water temperature, water flow and other parameters through the adjustment panel of the water heater according to their needs.

[0042] The gas sensor 26 in the installation box 24 will monitor the gas concentration inside the gas water heater in real time. If the gas sensor 26 detects an abnormal situation such as a gas leak, the controller 27 will immediately control the solenoid valve to close and cut off the gas supply. At this time, the user should immediately stop using the water heater and open the windows for ventilation to eliminate safety hazards. Do not continue to use the gas water heater or perform other operations that may generate sparks in the case of gas leakage.

[0043] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments.

Claims

1. A double fixed tube plate heat exchanger for a gas water heater, comprising a main body shell (11) and a heat exchange component, characterized in that: the heat exchange component is located in the main body shell (11), and a water inlet pipe (21) and a water outlet pipe (22) are respectively arranged on both sides of the main body shell (11), and the water inlet pipe (21) and the water outlet pipe (22) are connected and penetrated through the heat exchange component; two groups of fixing seats (31) are arranged on one side of the main body shell (11), and two groups of mounting seats (12) are arranged on the main body shell (11), and the fixing seats (31) and the mounting seats (12) are slidably connected, and a plurality of mounting holes (32) are provided on the fixing seats (31); an auxiliary bracket is arranged on the other side of the main body shell (11), and a smoke exhaust port (13) is opened on the main body shell (11).

2. A double fixed tube plate heat exchanger for a gas water heater according to claim 1, characterized in that: The heat exchange assembly comprises two groups of mounting frames (401) and multiple groups of tube sheets (402); the mounting frames (401) are arranged opposite to each other; the tube sheets (402) are longitudinally clamped between the two groups of mounting frames (401); multiple groups of buckles (403) are arranged on corresponding surfaces of the two groups of mounting frames (401); both sides of the tube sheets (402) are clamped in the multiple groups of buckles (403); multiple groups of limiting rods (404) are arranged between the mounting frames (401); limiting grooves (405) are provided on the tube sheets (402) corresponding to the limiting rods (404); the limiting rods (404) are clamped in the limiting grooves (405); and the tube sheets (402) and the mounting frames (401) are detachably connected.

3. A double fixed tube plate heat exchanger for a gas water heater according to claim 2, characterized in that: The heat exchange component further comprises a plurality of tube bundles (406), wherein the plurality of tube sheets (402) are arranged transversely between the two installation frames (401), wherein the tube sheets (402) are provided with connecting through holes (407), wherein the tube bundles (406) are inserted into the connecting through holes (407) and are located between the plurality of tube sheets (402), wherein a limiting plate (408) is provided at one end of the tube bundle (406), wherein the limiting plate (408) is in contact with the outermost tube sheet (402) of one group, and wherein the other end of the tube bundle (406) is sleeved on a fixed valve (409), wherein the fixed valve (409) is in contact with the outermost tube sheet (402) of the other group; and wherein a connecting port (23) is provided on one side of the water inlet pipe (21) and the water outlet pipe (22), wherein both ends of the tube bundle (406) are respectively connected to the connecting port (23).

4. A double fixed tube plate heat exchanger for a gas water heater according to claim 3, characterized in that: Two groups of heat-conducting baffles (410) are arranged on one side of the tube sheet (402); the tube bundle (406) is located between the two groups of heat-conducting baffles (410) and is in contact with the heat-conducting baffles (410); multiple groups of heat-conducting channels are arranged between the tube sheet (402) and another group of the tube sheets (402); multiple groups of guide plates (411) are arranged on both sides of the tube sheet (402); the guide plates (411) are located in the heat-conducting channels and are arranged to be inclined upwards; a wave surface is arranged on one side of the guide plates (411); a through groove (412) is opened on the top of the tube sheet (402); a smoke exhaust channel is formed between the multiple groups of the tube sheets (402) and the main body shell (11) through the through groove (412); the smoke exhaust port (13) is located above the smoke exhaust channel.

5. A double fixed tube plate heat exchanger for a gas water heater according to claim 4, characterized in that: The bottom of the mounting frame (401) is provided with a mounting plate (413), the bottom of the tube plate (402) is in contact with the mounting plate (413), two groups of mounting blocks (414) are provided on the mounting plate (413), and multiple groups of mounting sleeves (14) are provided on both sides of the main shell (11), and the mounting blocks (414) are clamped in the mounting sleeves (14); mounting grooves (415) are provided on both sides of the mounting block (414), and mounting clamping blocks (416) are provided in the mounting grooves (415), and first springs are also provided in the mounting grooves (415), and the mounting clamping blocks (416) are connected to the mounting blocks (414) through the first springs; the mounting sleeve (14) is provided with a mounting clamping groove (15) corresponding to the mounting clamping block (416), and the mounting clamping block (416) is clamped in the mounting clamping groove (15), and the mounting frame (401) is detachably connected to the main shell (11).

6. A double fixed tube plate heat exchanger for a gas water heater according to claim 1, characterized in that: The mounting seat (12) is provided with a plurality of fixing columns (16), and the fixing seat (31) is provided with a plurality of fixing sleeves (33). The fixing columns (16) are inserted into the fixing sleeves (33), and the fixing columns (16) are provided with fixing holes (17). The fixing sleeves (33) are provided with fixing grooves (34) corresponding to the fixing holes (17). The fixing bolts (35) are inserted into the fixing grooves (34) and the fixing holes (17). The fixing seat (31) is slidably connected to the mounting seat (12), and a second spring is provided in the fixing sleeves (33).

7. A double fixed tube plate heat exchanger for a gas water heater according to claim 6, characterized in that: The auxiliary bracket comprises a bracket base (51) and a bracket platform (52); a protrusion (53) is provided on one side of the main shell (11); a mounting groove (54) is provided on the protrusion (53); the bracket base (51) is clamped in the mounting groove (54) and is detachably connected to the main shell (11) through a plurality of bolts; the bracket platform (52) is located on one side of the bracket base (51); a connecting plate (55) is provided on one side of the bracket platform (52); two groups of connecting clamping plates (56) are provided on one side of the bracket base (51); the two groups of connecting plates (55) are clamped between the two groups of connecting clamping plates (56); the connecting clamping plates (56) are provided with a plurality of positioning through holes (57); the connecting plates (55) are provided with a plurality of positioning holes (58) corresponding to the positioning through holes (57); and positioning bolts (59) are passed through the positioning holes (58) and one of the groups of positioning holes (58).

8. A double fixed tube plate heat exchanger for a gas water heater according to claim 7, characterized in that: A slot is provided on the support platform (52), a magnet plate (36) is provided on one side of the support platform (52), and the magnet plate (36) is clamped in the slot.

9. A double fixed tube plate heat exchanger for a gas water heater according to claim 1, characterized in that: A mounting box (24) is arranged on one side of the main body shell (11), and the mounting box (24) is arranged in a stepped manner. The mounting cover plate (25) is connected to the mounting box (24) to form two groups of mounting cavities, one group of which is provided with a gas sensor (26), and the other group of which is provided with a controller (27). Both groups of mounting cavities are also provided with a heat insulation layer (28); a plurality of groups of ventilation grooves (29) are provided on the mounting cover plate (25), and one group of the mounting cavities is connected to the outside through the ventilation grooves (29); a solenoid valve is arranged at the bottom of the water inlet pipe (21), and the controller (27) is electrically connected to the gas sensor (26) and the solenoid valve.

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