Condensation type gas heating water heater

Abstract

The utility model relates to the technical field of heating and water heating furnaces, and discloses a condensation type gas heating and water heating furnace which comprises a shell, a combustion assembly is installed in the shell, a face cover is connected to the middle of the shell in a sliding mode, a round rod is connected to the middle of the shell in a rotating mode, and a gear is fixedly connected to the periphery of the round rod. A rack is fixedly connected to the bottom of the surface cover, the gear is meshed with the rack, a limiting assembly is installed between the shell and the surface cover, a ratchet wheel is fixedly connected to the periphery of the round rod, a shaft rod is fixedly connected to the right side of the inner wall of the shell, and a pawl is rotationally connected to the periphery of the shaft rod. A spring piece is installed on the right side of the inner wall of the shell. According to the utility model, when the fan is started, the drawn air enters the shell through the filter screen, so that dust in the outside air is filtered, the cleanness of the air is further ensured, and the combustion efficiency after the air and the gas are mixed is further ensured.

Description

Technical Field

[0001] This utility model relates to the field of heating and hot water boiler technology, and in particular to a condensing gas-fired heating and hot water boiler. Background Technology

[0002] With the development of economy and technology, condensing gas-fired heating and hot water boilers are becoming increasingly widely used to solve users' winter heating and year-round domestic hot water needs, and to improve users' living comfort. Employing condensing technology, they recover and utilize the latent heat in the exhaust gases produced by gas combustion, converting this heat into usable thermal energy through a condenser, thereby improving the overall system's thermal efficiency. This reduces energy consumption while ensuring a stable supply of domestic hot water.

[0003] Existing condensing gas-fired heating and hot water boilers typically employ removable outer shells to protect internal components such as burners, heat exchangers, condensers, and electrical control systems from external environmental influences, preventing damage from dust, moisture, and corrosion. This ensures the long-term stable operation of the internal equipment. However, most condensing gas-fired boilers use screws to fix the outer shell to the casing. Maintenance and repair require unscrewing each screw individually, a cumbersome process that reduces worker efficiency. Therefore, this paper proposes a new type of condensing gas-fired heating and hot water boiler to address these issues. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a condensing gas-fired heating and hot water boiler, which aims to improve the problem of cumbersome disassembly process in the prior art, which affects the maintenance efficiency of workers.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A condensing gas-fired heating and hot water boiler includes an outer shell, a combustion assembly installed inside the outer shell, a cover slidably connected to the middle of the outer shell, a round rod rotatably connected to the middle of the outer shell, a gear fixedly connected to the outer periphery of the round rod, a rack fixedly connected to the bottom of the cover, the gear meshing with the rack, a limit assembly installed between the outer shell and the cover, a ratchet fixedly connected to the outer periphery of the round rod, a shaft fixedly connected to the right side of the inner wall of the outer shell, a pawl rotatably connected to the outer periphery of the shaft, a spring plate installed on the right side of the inner wall of the outer shell, the spring plate contacting the pawl, and an actuating assembly installed in the middle of the outer shell.

[0007] The actuating assembly includes a lever, which is fixedly connected to the middle of the pawl. A limit block is provided on the right side of the housing, and the lever is slidably connected to the middle of the limit block. A knob is fixedly connected to the end of the round rod away from the housing.

[0008] As a further description of the above technical solution:

[0009] An outer frame is fixedly connected to the middle of the outer shell, a filter screen is slidably connected to the middle of the outer frame, a locking assembly is installed between the filter screen and the outer frame, a sleeve is fixedly connected to the rear side of the outer frame, a slide rod is slidably connected to the middle of the sleeve, a stop is fixedly connected to one end of the slide rod, and an elastic assembly is installed in the middle of the sleeve.

[0010] As a further description of the above technical solution:

[0011] The combustion assembly includes a mixing burner, which is installed in the middle of the housing. A fan is installed in the middle of the housing, and the output end of the fan is connected to the mixing burner. A gas pipe is fixedly connected to the middle of the mixing burner, and an exhaust port is fixedly connected to the left side of the mixing burner.

[0012] As a further description of the above technical solution:

[0013] The limiting component includes a limiting block, which is fixedly connected to the bottom of the face cover. Limiting grooves are provided on both the left and right sides of the inner wall of the outer shell, and the limiting block is slidably connected to the middle of the limiting groove.

[0014] As a further description of the above technical solution:

[0015] The locking assembly includes a locking block, which is fixedly connected to the outside of the filter screen. A locking groove is provided in the middle of the outer frame, and the locking block is slidably connected to the middle of the locking groove.

[0016] As a further description of the above technical solution:

[0017] The elastic component includes a stop block, which is fixedly connected to the end of the slide rod away from the stop block, and a compression spring is sleeved on the outer periphery of the slide rod;

[0018] As a further description of the above technical solution:

[0019] A sealing block is fixedly connected to the outer periphery of the lever, and the sealing block is in contact with the inner wall of the outer casing;

[0020] As a further description of the above technical solution:

[0021] The input end of the fan is horizontal to the filter screen.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, during maintenance, turning the lever causes the pawl to separate from the ratchet, so that the pawl no longer blocks the ratchet, allowing the cover to be pulled out. At the same time, the limiting block at the bottom of the cover is aligned with the limiting groove and inserted. The rack drives the gear to rotate, and the rack drives the round rod to rotate. When the cover slides outward, the pawl can hold the ratchet in place under the action of the spring plate, thereby preventing the round rod from rotating, improving the efficiency of cover disassembly and installation, and thus improving maintenance efficiency.

[0024] 2. In this utility model, when the fan is started, the drawn air will enter the outer casing through the filter screen, thereby filtering out dust in the outside air, thus ensuring the cleanliness of the air, and thus ensuring the combustion efficiency of the air and gas mixture. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a condensing gas-fired heating and hot water boiler proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of a limiting block for a condensing gas-fired heating and hot water boiler proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of a circular rod in a condensing gas-fired heating hot water boiler proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the ratchet structure of a condensing gas-fired heating hot water boiler proposed in this utility model;

[0029] Figure 5 for Figure 1 Enlarged view of point A in the middle;

[0030] Figure 6 This is a schematic diagram of the structure of a filter screen for a condensing gas-fired heating hot water boiler proposed in this utility model;

[0031] Figure 7 This is a schematic diagram of the compression spring of a condensing gas-fired heating and hot water boiler proposed in this utility model.

[0032] Legend:

[0033] 1. Outer shell; 2. Face cover; 3. Gas pipe; 4. Outer frame; 5. Sleeve; 6. Filter screen; 7. Knob; 8. Lever; 9. Limiting block; 10. Rack; 11. Gear; 12. Fan; 13. Mixing burner; 14. Exhaust port; 15. Limiting groove; 16. Round rod; 17. Ratchet; 18. Shaft; 19. Pawl; 20. Stopping block; 21. Spring plate; 22. Sealing block; 23. Slot; 24. Locking block; 25. Stop block; 26. Compression spring; 27. Slide rod. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Reference Figures 1-3 This utility model provides an embodiment of a condensing gas-fired heating and hot water boiler, comprising a shell 1, a combustion assembly installed inside the shell 1, the combustion assembly including a mixing burner 13, the mixing burner 13 being installed in the middle of the shell 1, a fan 12 being installed in the middle of the shell 1, the output end of the fan 12 being connected to the mixing burner 13, a gas pipe 3 being fixedly connected to the middle of the mixing burner 13, an exhaust port 14 being fixedly connected to the left side of the mixing burner 13, a cover 2 being slidably connected to the middle of the shell 1, a round rod 16 being rotatably connected to the middle of the shell 1, a gear 11 being fixedly connected to the outer periphery of the round rod 16, a rack 10 being fixedly connected to the bottom of the cover 2, the gear 11 meshing with the rack 10, a limiting assembly being installed between the shell 1 and the cover 2, the limiting assembly including a limiting block 9 being fixedly connected to the bottom of the cover 2, limiting grooves 15 being opened on both the left and right sides of the inner wall of the shell 1, and the limiting block 9 being slidably connected to the middle of the limiting groove 15. Align the limiting block 9 at the bottom of the cover 2 with the limiting groove 15 in the outer shell 1 and insert it so that the cover 2 can slide into the middle of the outer shell 1. At the same time, the cover 2 will drive the rack 10 to contact the gear 11, and the rack 10 will drive the gear 11 to rotate, so that the gear 11 drives the round rod 16 to rotate together.

[0036] Reference Figures 3-5A ratchet 17 is fixedly connected to the outer periphery of the round rod 16. A shaft 18 is fixedly connected to the right side of the inner wall of the outer casing 1. A pawl 19 is rotatably connected to the outer periphery of the shaft 18. A spring plate 21 is installed on the right side of the inner wall of the outer casing 1. The spring plate 21 is in contact with the pawl 19. An actuating assembly is installed in the middle of the outer casing 1. The actuating assembly includes a lever 8, which is fixedly connected to the middle of the pawl 19. A limit block 9 is provided on the right side of the outer casing 1. The lever 8 is slidably connected to the middle of the limit block 9. A knob 7 is fixedly connected to the end of the round rod 16 away from the outer casing 1. When gear 11 drives the round rod 16 to rotate, the round rod 16 drives the ratchet 17 to rotate. When the ratchet 17 rotates, it will actuate the pawl 19. Under the action of the spring plate 21, the pawl 19 can return to its original position and engage with the teeth of the ratchet 17 after being actuated. Thus, when the cover 2 is pulled outward, the pawl 19 abuts against the ratchet 17 and locks the round rod 16, preventing it from rotating. By moving the lever 8 to slide in the middle of the limiting block 9, the limiting block 9 drives the pawl 19 to rotate and separate from the ratchet 17, allowing the round rod 16 to rotate. Then, by rotating the knob 7, the gear 11 is driven to push the rack 10, causing the edge of the cover 2 to slide out, so that the cover 2 can be pulled out and separated from the outer shell 1, thereby improving the efficiency of disassembly and installation of the cover 2 and thus improving maintenance efficiency.

[0037] Reference Figure 1 , Figure 6 and Figure 7 An outer frame 4 is fixedly connected to the middle of the outer casing 1. A filter screen 6 is slidably connected to the middle of the outer frame 4. A locking assembly is installed between the filter screen 6 and the outer frame 4. A sleeve 5 is fixedly connected to the rear side of the outer frame 4. A slide rod 27 is slidably connected to the middle of the sleeve 5. A stop block 25 is fixedly connected to one end of the slide rod 27. An elastic component is installed in the middle of the sleeve 5. The locking assembly includes a locking block 24, which is fixedly connected to the outside of the filter screen 6. A slot 23 is provided in the middle of the outer frame 4. The locking block 24 is slidably connected to the middle of the slot 23. The elastic component includes a stop block 20, which is fixedly connected to the end of the slide rod 27 away from the stop block 25. A compression spring 26 is sleeved on the outer periphery of the slide rod 27. The input end of the fan 12 is horizontal with the filter screen 6. When the fan 12 starts, the drawn air enters the outer casing 1 through the filter screen 6 and is transported by the fan 12. At the same time, dust in the outside air is filtered by the filter screen 6, thus ensuring the cleanliness of the air and improving the combustion efficiency of the air-gas mixture. Simultaneously, pulling the stop block 25 causes the slide rod 27 to slide outward from the middle of the sleeve 5 and rotate, so that the stop block 25 no longer obstructs the filter screen 6, allowing the filter screen 6 to be quickly removed for cleaning, thereby ensuring the filtration effect of the filter screen 6. At the same time, when the slide rod 27 slides, it will drive the stop block 20 to compress the spring 26. After the clip 24 on the filter screen 6 is aligned with the clip slot 23 and inserted, and the stop block 25 is released, the stop block 25 will be reset under the action of the spring 26, thereby fixing the filter screen 6 in the middle of the outer frame 4 for easy installation.

[0038] Reference Figure 4 and Figure 5 A sealing block 22 is fixedly connected to the outer periphery of the lever 8, and the sealing block 22 is in contact with the inner wall of the outer shell 1. When the lever 8 slides, it will drive the sealing block 22, so that the limiting block 9 can always be blocked, thereby ensuring the sealing and heat preservation effect of the outer shell 1 under the action of the sealing block 22.

[0039] Working principle: During maintenance, firstly, the lever 8 is turned to separate the pawl 19 from the ratchet 17, so that the pawl 19 no longer blocks the ratchet 17, and the round rod 16 can rotate. When the cover 2 is pulled out, it drives the rack 10 to move the gear 11. The gear 11 drives the round rod 16 to rotate. Similarly, the limiting block 9 at the bottom of the cover 2 is aligned with the limiting groove 15 and inserted. The rack 10 drives the gear 11 to rotate in the opposite direction. At the same time, the rack 10 drives the round rod 16 to rotate. When the cover 2 slides outward, the pawl 19 can hold the ratchet 17 under the action of the spring plate 21, thereby preventing the round rod 16 from rotating, improving the efficiency of disassembly and installation of the cover 2, and thus improving maintenance efficiency.

[0040] When the fan 12 starts, the drawn air enters the outer casing 1 through the filter screen 6, thereby filtering out dust from the outside air and ensuring the cleanliness of the air. This, in turn, ensures the combustion efficiency of the air-gas mixture. At the same time, pulling the baffle 25 causes the slide rod 27 to slide outward from the middle of the sleeve 5 and rotate, so that the baffle 25 no longer blocks the filter screen 6, allowing the filter screen 6 to be quickly removed for cleaning, thus ensuring the filtration effect of the filter screen 6.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A condensing gas combi boiler comprising a casing (1), characterised in that: The inside of the shell (1) is provided with a combustion assembly, the middle part of the shell (1) is slidably connected with a cover (2), the middle part of the shell (1) is rotatably connected with a round rod (16), the outer periphery of the round rod (16) is fixedly connected with a gear (11), the bottom of the cover (2) is fixedly connected with a rack (10), the gear (11) is engaged with the rack (10), a limiting assembly is installed between the shell (1) and the cover (2), the outer periphery of the round rod (16) is fixedly connected with a ratchet wheel (17), the inner wall right side of the shell (1) is fixedly connected with a shaft rod (18), the outer periphery of the shaft rod (18) is rotatably connected with a pawl (19), the inner wall right side of the shell (1) is installed with a spring sheet (21), the spring sheet (21) is in contact with the pawl (19), the middle part of the shell (1) is installed with a dialing assembly. The dialing assembly comprises a dialing rod (8), the dialing rod (8) is fixedly connected to the middle part of the pawl (19), the right side of the shell (1) is provided with a limiting block (9), the dialing rod (8) is slidably connected to the middle part of the limiting block (9), one end of the round rod (16) away from the shell (1) is fixedly connected with a knob (7).

2. The condensing gas-fired combination heating and hot water unit according to claim 1, wherein: The middle part of the shell (1) is fixedly connected with an outer frame (4), the middle part of the outer frame (4) is slidably connected with a filter screen (6), a clamping assembly is installed between the filter screen (6) and the outer frame (4), the rear side of the outer frame (4) is fixedly connected with a sleeve (5), the middle part of the sleeve (5) is slidably connected with a sliding rod (27), one end of the sliding rod (27) is fixedly connected with a stop block (25), the middle part of the sleeve (5) is installed with an elastic assembly.

3. The condensing gas-fired combination heating and hot water boiler according to claim 2, characterized in that: The combustion assembly comprises a mixed burner (13), the mixed burner (13) is installed in the middle part of the shell (1), the middle part of the shell (1) is installed with a fan (12), the output end of the fan (12) is connected with the mixed burner (13), the middle part of the mixed burner (13) is fixedly connected with a gas pipe (3), the left side of the mixed burner (13) is fixedly connected with an exhaust port (14).

4. The condensing gas-fired combination heating and hot water boiler according to claim 1, characterized in that: The limiting assembly comprises a limiting block (9), the limiting block (9) is fixedly connected to the bottom of the cover (2), the inner wall left and right sides of the shell (1) are provided with limiting grooves (15), the limiting block (9) is slidably connected to the middle part of the limiting groove (15).

5. The condensing gas-fired combination heating and hot water boiler according to claim 2, characterized in that: The clamping assembly comprises a clamping block (24), the clamping block (24) is fixedly connected to the outer side of the filter screen (6), the middle part of the outer frame (4) is provided with a clamping groove (23), the clamping block (24) is slidably connected to the middle part of the clamping groove (23).

6. The condensing gas-fired combination heating and hot water boiler according to claim 2, characterized in that: The elastic assembly comprises a blocking block (20), the blocking block (20) is fixedly connected to one end of the sliding rod (27) away from the stop block (25), the outer periphery of the sliding rod (27) is sleeved with a compression spring (26).

7. The condensing gas-fired combination heating and hot water boiler of claim 1, wherein: The outer periphery of the dialing rod (8) is fixedly connected with a sealing block (22), the sealing block (22) is in contact with the inner wall of the shell (1).

8. The condensing gas-fired combination heating and hot water boiler according to claim 3, characterized in that: The input end of the fan (12) is in horizontal state with the filter screen (6).

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