Flue gas condensing recovery structure of gas heating water heater

Abstract

The utility model discloses a flue gas condensation recovery structure of gas heating water heater belongs to gas heating water heater technical field, including the shell, is equipped with burner in the shell, is equipped with the first heat exchanger on the burner, is equipped with the first heat pipe that passes to the first heat exchanger, is equipped with the fixed clamping edge on the first heat exchanger, installs the tapering channel on the first heat exchanger, and the fixed sleeve is equipped with on tapering channel periphery, and the fixed sleeve periphery is equipped with a plurality of fixed buckles, is equipped with the flow guide channel on tapering channel, and the through groove is seted up on the one side of flow guide channel, and the water diversion groove is welded in the through groove, and the drain pipe is equipped with on the one side second heat exchanger of water diversion groove, is equipped with the second heat exchanger in flow guide channel, and the second heat pipe that passes is equipped with on the second heat exchanger, and the fan is equipped with on the other side of flow guide channel, through the setting of tapering channel and fixed buckle, make the user can stabilize the connecting component and optimize flue gas flow, solve the traditional gas heating water heater flue gas and heat exchanger contact not enough problem.

Description

Technical Field

[0001] This utility model belongs to the technical field of gas-fired heating and hot water boilers, and more specifically, it relates to a flue gas condensation and recovery structure for a gas-fired heating and hot water boiler. Background Technology

[0002] In the field of gas-fired heating and hot water boilers, it is often necessary to use related structures to recover and utilize the heat from flue gas. For example, in the scenario of home winter heating, in order to improve energy efficiency and reduce energy consumption, users often use gas-fired heating and hot water boilers. At this time, it is necessary to use equipment with a good flue gas condensation and recovery structure to achieve effective recovery of flue gas heat and provide heating and hot water supply.

[0003] In practical applications, traditional gas-fired heating and hot water boilers have poor recovery rates of waste heat from flue gas, leading to energy waste. Furthermore, in the flue gas treatment stage, the contact between the flue gas and the heat exchanger is insufficient, resulting in significant heat loss during continued use and increased energy consumption. This not only negatively impacts energy efficiency but also raises operating costs.

[0004] Based on the existing technology, it was found that the flue gas in traditional gas-fired heating and hot water boilers does not have sufficient contact with the heat exchanger, which easily leads to heat loss. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a flue gas condensation and recovery structure for a gas-fired heating and hot water boiler, thereby solving the technical problem of insufficient contact between the flue gas and the heat exchanger in traditional gas-fired heating and hot water boilers.

[0006] The purpose and effect of this utility model's flue gas condensation and recovery structure for a gas-fired heating hot water boiler are achieved through the following specific technical means:

[0007] A flue gas condensation and recovery structure for a gas-fired heating hot water boiler includes an outer shell;

[0008] A burner is installed inside the outer casing. A first heat exchanger is installed on the burner. A first heat pipe passes through the first heat exchanger. A fixing edge is provided on the first heat exchanger. A tapered channel is installed on the first heat exchanger. A fixing sleeve is provided around the tapered channel. Multiple sets of fixing buckles are installed around the fixing sleeve. Multiple sets of fixing buckles are clamped on the fixing edge. A flow guide channel is provided on the tapered channel. A through groove is opened on one side of the flow guide channel. A water inlet groove is welded in the through groove. A drain pipe is provided on a second heat exchanger on one side of the water inlet groove. A second heat exchanger is installed in the flow guide channel. A second heat pipe passes through the second heat exchanger. A fan is installed on the other side of the flow guide channel.

[0009] The above technical solution further includes: the fan inlet is connected to the guide channel, and a smoke exhaust pipe is installed on the fan outlet.

[0010] The above technical solution further includes: an angle α is formed between the central axis of the second heat exchanger and the central axis of the water inlet channel, α ∈ 10° to 30°, and multiple sets of guide rods are installed on the water inlet channel, with the bottom of the second heat exchanger connected to the multiple sets of guide rods.

[0011] The above technical solution further includes: both ends of the second heat pipe are equipped with connecting tees, one end of each of the two sets of connecting tees is connected to the first heat pipe, one end of one set of connecting tees is equipped with a water inlet pipe, and one end of the other set of connecting tees is equipped with a water outlet pipe.

[0012] The above technical solution further includes: two sets of fixing seats are provided at the other end of each of the two sets of connecting tees, a fixing clamp is installed on the fixing seat, a threaded hole is opened on the fixing clamp, a fixing screw is inserted in the threaded hole, and a fixing block is provided at the bottom of the fixing screw.

[0013] The above technical solution further includes: both ends of the second heat pipe are provided with fixed edges, and fixed holes are opened on the fixed edges corresponding to the fixed blocks. The fixed blocks are locked in the fixed holes, and the other ends of the two sets of connecting tees are each equipped with a sealing gasket.

[0014] The above technical solution further includes: a gas pipe interface is installed inside the outer casing, the gas pipe interface is connected to the burner through a pipe, and a top cover is installed on the top of the outer casing.

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

[0016] 1. The use of a tapered channel and fixed clips allows users to stably connect components and optimize flue gas flow, improving the structural stability and flue gas heat exchange efficiency of the device. After installation, users can fix the position of the tapered channel by engaging the fixed clips with the first heat exchanger, preventing flue gas leakage and ensuring that the flue gas enters the guide channel more concentratedly and makes full contact with the second heat exchanger. This solves the problem of insufficient contact between flue gas and heat exchanger in traditional gas-fired heating and hot water boilers.

[0017] 2. By using a second heat exchanger, a water inlet tank, and a guide rod, flue gas condensate is effectively collected, allowing users to discharge the condensate in a timely manner and improving the device's condensate handling capacity. Then, the 10° to 30° angle between the second heat exchanger 11 and the water inlet tank 9, along with the guide rod 15, allows the device to smoothly flow the condensate into the water inlet tank 9 and discharge it through the drain pipe 10, providing users with a condensate treatment method and preventing condensate accumulation from affecting equipment performance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is an exploded view of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the flow guide channel and the second heat exchanger after separation in this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the first heat pipe and the second heat pipe after assembly in an embodiment of this utility model;

[0022] Figure 5 This utility model Figure 2 Enlarged view of region a in the middle;

[0023] Figure 6 This utility model Figure 3 A magnified view of region b in the middle.

[0024] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0025] 1. Outer shell; 2. Burner; 3. First heat exchanger; 4. First heat conduction pipe; 5. Gradient channel; 6. Fixing sleeve; 7. Fixing buckle; 8. Flow guide channel; 9. Water inlet trough; 10. Drain pipe; 11. Second heat exchanger; 12. Second heat conduction pipe; 13. Fan; 14. Exhaust pipe; 15. Flow guide rod; 16. Connecting tee; 17. Water inlet pipe; 18. Water outlet pipe; 19. Fixing base; 20. Fixing clamp; 21. Fixing screw; 23. Sealing gasket; 24. Gas pipe interface; 25. Top cover; 26. Fixing clip edge. Detailed Implementation

[0026] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0027] Example:

[0028] As attached Figure 1 To be continued Figure 6 As shown:

[0029] This utility model provides a flue gas condensation and recovery structure for a gas-fired heating and hot water boiler, including an outer shell 1, a burner 2 installed inside the outer shell 1, a first heat exchanger 3 installed on the burner 2, a first heat conduction pipe 4 passing through the first heat exchanger 3, a fixing edge 26 provided on the first heat exchanger 3, a tapering channel 5 installed on the first heat exchanger 3, a fixing sleeve 6 provided around the tapering channel 5, multiple sets of fixing buckles 7 installed around the fixing sleeve 6, multiple sets of fixing buckles 7 fastened on the fixing edge 26, a flow guide channel 8 provided on the tapering channel 5, a through groove opened on one side of the flow guide channel 8, a water inlet trough 9 welded into the through groove, and a second heat exchanger 11 provided on one side of the water inlet trough 9. A drain pipe 10 and a guide channel 8 house a second heat exchanger 11, with a second heat-conducting pipe 12 passing through it. A fan 13 is installed on the other side of the guide channel 8. A tapered channel 5 is installed on the first heat exchanger 3 via a fixing sleeve 6. The fixing clip 26 engages with the fixing buckle 7 to secure the tapered channel 5 to the first heat exchanger 3, preventing leakage due to loose components during flue gas flow. The tapered channel 5 allows the flue gas discharged from the first heat exchanger 3 to gradually narrow its cross-section during flow, increasing the flow velocity and allowing the flue gas to enter the guide channel 8 more concentratedly, ensuring full contact with the second heat exchanger 11. This structure makes it easier for the heat in the flue gas to be absorbed by the second heat-conducting pipe 12.

[0030] The air inlet of the fan 13 is connected to the flow channel 8, and the exhaust pipe 14 is installed on the air outlet of the fan 13. The fan 13 is powered by an external circuit. When the fan 13 operates, it drives the flow of flue gas in the flow channel 8. The flue gas is discharged to the outside of the outer casing 1 through the exhaust pipe 14.

[0031] Please refer to, for example Figure 3 and Figure 6 As shown, the central axis of the second heat exchanger 11 forms an angle α with the central axis of the water inlet trough 9, where α ∈ 10° to 30°. Multiple sets of guide rods 15 are installed on the water inlet trough 9. The bottom of the second heat exchanger 11 is connected to the multiple sets of guide rods 15. Due to the angle of 10° to 30° between the second heat exchanger 11 and the water inlet trough 9, the condensate in the flue gas can flow along the inclined surface of the heat exchanger through the guide rods 15 to the water inlet trough 9, and then be discharged through the drain pipe 10.

[0032] Please refer to, for example Figure 2 and Figure 4As shown, both ends of the second heat pipe 12 are equipped with connecting tees 16. One end of each of the two sets of connecting tees 16 is connected to the first heat pipe 4. One end of one set of connecting tees 16 is equipped with a water inlet pipe 17, and one end of the other set of connecting tees 16 is equipped with a water outlet pipe 18. The water inlet pipe 17 is supplied with external water. Cold water enters the second heat pipe 12 and the first heat pipe 4, absorbs heat, becomes hot water, and then flows out through the water outlet pipe 18.

[0033] Please refer to, for example Figure 5 As shown, each of the two sets of connecting tees 16 has two sets of fixing seats 19 at the other end. Fixing blocks 20 are installed on the fixing seats 19. The fixing blocks 20 have threaded holes, and fixing screws 21 are inserted into the threaded holes. Fixing blocks are provided at the bottom of the fixing screws 21. The second heat pipe 12 has fixing edges at both ends, and fixing holes are provided on the fixing edges corresponding to the fixing blocks. The user can adjust the position of the fixing screws 21 in the threaded holes of the fixing blocks 20 to drive the fixing blocks into the fixing holes of the second heat pipe 12 to fix the connection between the second heat pipe 12 and the connecting tees 16.

[0034] Both sets of connecting tees 16 have sealing gaskets 23 installed at the other end; the sealing gaskets 23 are made of rubber and are used to fill the gap between the connecting tees 16 and the second heat pipe 12.

[0035] The outer casing 1 is equipped with a gas pipe interface 24, which is connected to the burner 2 via a pipe. The top of the outer casing 1 is equipped with a top cover 25. The gas pipe interface 24 is connected to an external gas line. The top cover 25 covers the top of the outer casing 1 to prevent dust or debris from falling into the device.

[0036] The specific usage and function of this embodiment are as follows:

[0037] When using the device, the gas is connected to an external gas line through the gas pipe interface 24, and the gas enters the burner 2 for combustion. The high-temperature flue gas generated by combustion enters the first heat exchanger 3 and exchanges heat with the cold water in the first heat conduction pipe 4. The cold water absorbs some of the heat and its temperature rises.

[0038] The flue gas passing through the first heat exchanger 3 enters the converging channel 5, where the cross-section gradually narrows, increasing the flue gas velocity and concentrating it into the guide channel 8. At this point, the flue gas comes into contact with the second heat exchanger 11, and the second heat pipe 12 absorbs heat from the flue gas, further heating the water inside the pipe. The fan 13 operates, driving the flue gas flow within the guide channel 8, and the gas is discharged outside the outer casing 1 through the exhaust pipe 14.

[0039] Water vapor in the flue gas condenses into condensate on the surface of the second heat exchanger 11. Since the second heat exchanger 11 and the water inlet tank 9 are at an angle of 10° to 30°, the condensate flows into the water inlet tank 9 along the inclined surface through the guide rod 15 and is then discharged through the drain pipe 10.

[0040] Cold water enters the connecting tee 16 from the inlet pipe 17, and after being split, it flows into the first heat-conducting pipe 4 and the second heat-conducting pipe 12 respectively. After absorbing heat, it flows into another set of connecting tee 16, and finally flows out from the outlet pipe 18.

[0041] During installation, the fixing clips 7 on the fixing sleeve 6 engage with the fixing clip edge 26 of the first heat exchanger 3 to fix the position of the tapered channel 5. Adjust the position of the fixing screw 21 within the threaded hole of the fixing block 20 so that the fixing block engages with the fixing hole on the fixing edge of the second heat pipe 12. The sealing gasket 23 fills any gaps, ensuring a tight connection between the connecting tee 16 and the second heat pipe 12. The top cover 25 of the outer casing 1 covers the top to prevent dust or debris from falling into the interior, ensuring stable operation of the device.

[0042] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A flue gas condensation and recovery structure for a gas-fired heating and hot water boiler, comprising an outer shell (1), characterized in that: A burner (2) is installed inside the outer casing (1). A first heat exchanger (3) is installed on the burner (2). A first heat pipe (4) passes through the first heat exchanger (3). A fixing edge (26) is provided on the first heat exchanger (3). A tapered channel (5) is installed on the first heat exchanger (3). A fixing sleeve (6) is provided around the tapered channel (5). Multiple sets of fixing buckles (7) are installed around the fixing sleeve (6). The fixing edge (26) is secured with... Multiple sets of fixed buckles (7) are provided. A guide channel (8) is provided on the tapered channel (5). A through groove is opened on one side of the guide channel (8). A water inlet trough (9) is welded in the through groove. A drain pipe (10) is provided on the second heat exchanger (11) on one side of the water inlet trough (9). A second heat exchanger (11) is installed in the guide channel (8). A second heat pipe (12) is passed through the second heat exchanger (11). A fan (13) is installed on the other side of the guide channel (8).

2. The flue gas condensation and recovery structure of a gas-fired heating hot water boiler according to claim 1, characterized in that: The air inlet of the fan (13) is connected to the guide channel (8), and a smoke exhaust pipe (14) is installed on the air outlet of the fan (13).

3. The flue gas condensation and recovery structure of a gas-fired heating hot water boiler according to claim 1, characterized in that: The central axis of the second heat exchanger (11) forms an angle α with the central axis of the water inlet tank (9), α ∈ 10° to 30°. Multiple sets of guide rods (15) are installed on the water inlet tank (9), and the bottom of the second heat exchanger (11) is connected to the multiple sets of guide rods (15).

4. The flue gas condensation and recovery structure of a gas-fired heating hot water boiler according to claim 1, characterized in that: Both ends of the second heat pipe (12) are equipped with connecting tees (16). One end of each of the two sets of connecting tees (16) is connected to the first heat pipe (4). One end of one set of connecting tees (16) is equipped with a water inlet pipe (17), and one end of the other set of connecting tees (16) is equipped with a water outlet pipe (18).

5. The flue gas condensation and recovery structure of a gas-fired heating hot water boiler according to claim 4, characterized in that: Two sets of fixing seats (19) are provided at the other end of the two sets of connecting tees (16). Fixing blocks (20) are installed on the fixing seats (19). Threaded holes are opened on the fixing blocks (20). Fixing screws (21) are inserted into the threaded holes. Fixing blocks are provided at the bottom of the fixing screws (21).

6. The flue gas condensation and recovery structure of a gas-fired heating hot water boiler according to claim 5, characterized in that: The second heat pipe (12) has fixed edges at both ends, and fixed holes are opened on the fixed edges corresponding to the fixed blocks. The fixed blocks are locked in the fixed holes, and sealing gaskets (23) are installed at the other ends of the two sets of connecting tees (16).

7. The flue gas condensation and recovery structure of a gas-fired heating hot water boiler according to claim 1, characterized in that: The outer casing (1) is equipped with a gas pipe interface (24), which is connected to the burner (2) through a pipe. The outer casing (1) is equipped with a top cover (25).

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