Energy recovery device for boiler

Abstract

The utility model discloses an energy recovery device for a boiler, which comprises a water tank, a first slot arranged on the side wall of the water tank, chutes arranged on the inner walls of both sides of the water tank, a water collecting tank fixedly connected to the side wall of the water tank, a partition plate fixedly connected to the top of the water tank, a plurality of second slots arranged on the partition plate, and a heating box fixedly connected to the top of the partition plate. A smoke inlet and a smoke outlet are formed in the two sides of the heating box respectively, and the bottom of the heating box is open. In the using process, heat in waste gas can be conducted into the water tank below through the heat conduction assembly, so that water in the water tank can be preheated, and meanwhile, water condensed by water vapor in the waste gas can be collected into the water tank to be recycled.

Description

Technical Field

[0001] This utility model relates to the technical field of heating equipment accessories, and in particular to an energy recovery device for boilers. Background Technology

[0002] A heating boiler is an important thermal energy device, and its working principle is mainly based on heat exchange. Fuel burns in the combustion chamber inside the boiler, generating a large amount of heat. This heat heats the inner wall of the combustion chamber and the water pipes, and then transfers the heat to the water in the pipes. During the heat exchange process, the temperature of the flue gas gradually decreases, while the temperature of the water gradually increases. As the water temperature rises, the heat energy in the water begins to be transferred to the heating system. Heating boilers generate heat energy by burning fuel gas (such as natural gas, liquefied petroleum gas, etc.) for heating or providing hot water. There are two main types of heating: underfloor heating and wall heating. Underfloor heating uses low-temperature water (not exceeding 60°C) as the heat medium, and the entire floor is evenly heated by radiation through hot water coils under the floor. Wall heating involves heating water in the boiler and then transporting it through pipes to various radiators. The hot water flows inside the radiators and radiates heat into the surrounding space through the outer shell of the radiators. The water heated by the boiler is distributed to various parts of the room through a distributor and then returns to the boiler for reheating through a collector. This circulation and heating of water is used for indoor heating.

[0003] Existing household heating boilers typically use natural gas to generate heat. During heating, the water in the heating system needs to be repeatedly heated, which consumes a lot of energy. The exhaust gas produced by burning natural gas is usually directly discharged outdoors. This exhaust gas contains a lot of heat when it is first discharged from the boiler. If it is directly discharged, this part of the heat cannot be fully utilized, resulting in a waste of heat energy. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an energy recovery device for boilers.

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

[0006] An energy recovery device for a boiler includes a water tank with a first slot on its side wall and sliding grooves on both inner walls. A water collection trough is fixedly connected to the side wall of the water tank, and a partition is fixedly connected to the top of the water tank. Several second slots are provided on the partition, and a heating box is fixedly connected to the top of the partition. The heating box has a flue gas inlet and an exhaust outlet on both sides, and the bottom of the heating box is open. The device also includes several heat-conducting components, each consisting of a connecting plate and several heat-conducting pipes. A protrusion is fixedly connected to the bottom of the connecting plate, and the protrusion matches the second slot. The heat-conducting components are fixedly connected to the partition via the protrusion. The top ends of the heat-conducting pipes are located inside the heating box, and the ends of the heat-conducting pipes pass through the connecting plate and the protrusion and extend into the water tank. The device also includes a filter assembly, which is movably inserted into the water tank via the first slot. The filter assembly includes a filter box with several drainage holes at the bottom and filter media placed inside the filter box.

[0007] Preferably, the water tank has an inlet pipe connected to the side wall and a drain pipe connected to the bottom, with water valves installed on both the inlet and drain pipes.

[0008] Specifically, the inlet pipe is used to connect to the outlet of the water collection pipe of the water collector in the heating system, and the drain pipe is used to connect to the heating water inlet of the boiler.

[0009] Preferably, the bottom of the water collection tank has a funnel-shaped structure, and the bottom of the water collection tank is connected to the inside of the water tank through a water collection pipe, and the water collection tank and the heating box are interconnected.

[0010] Preferably, one end of the partition extends above the water collection tank and has a gap with the side wall of the water collection tank. Several diversion channels are provided on the upper surface of the partition, and the diversion channels pass through both ends of the partition. The ends of the diversion channels near the water collection tank are all inclined downwards.

[0011] Preferably, there is a gap between the filter assembly and the bottom of the water tank, and the filter assembly is located below the inlet pipe and the collection pipe.

[0012] Preferably, the outer wall of the filter box is fitted to the inner wall of the water tank, and the two sides of the filter box are slidably connected to the inner wall of the water tank through sliding grooves. A panel is fixedly connected to the end of the filter assembly. The panel is located outside the water tank and is fitted to the outer wall of the water tank. A sealing ring is fixedly connected to the side of the panel near the water tank. The sealing ring matches the first slot.

[0013] Preferably, the filter material includes a first filter screen, a filter cotton fixedly connected above the first filter screen, and a second filter screen fixedly connected above the filter cotton.

[0014] Specifically, other filter media can be added according to usage needs to better filter out impurities in the water.

[0015] This utility model has the following beneficial effects:

[0016] 1. During use, the present invention can transfer the heat in the exhaust gas to the water tank below through the heat conduction component, so as to preheat the water in the water tank and reduce energy consumption. At the same time, it can also collect the water condensed from the water vapor in the exhaust gas into the water tank for recycling.

[0017] 2. This utility model is equipped with a filter component, which can filter the water in the water tank. After being connected to the heating system, it can reduce impurities in the heating system pipes, improve the water quality in the pipes, and thus extend the service life of the pipes. Attached Figure Description

[0018] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0019] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0020] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0021] Figure 4 This is a cross-sectional view of the water tank structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the thermal conductive component structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the partition structure of this utility model;

[0024] Figure 7 This is an exploded view of the filter assembly of this utility model;

[0025] Figure 8 This utility model Figure 7 Enlarged view of the structure at point A in the middle.

[0026] In the diagram: 1. Water tank; 101. First slot; 102. Inlet pipe; 103. Drain pipe; 104. Slide groove; 2. Water collection tank; 201. Water collection pipe; 3. Partition plate; 301. Second slot; 302. Drainage channel; 4. Heating box; 401. Smoke inlet; 402. Smoke outlet; 5. Heat conduction component; 501. Connecting plate; 502. Heat conduction pipe; 503. Protrusion; 6. Filter component; 601. Filter box; 601a. ​​Drain hole; 602. Filter media; 602a. First filter screen; 602b. Filter cotton; 602c. Second filter screen; 603. Panel; 604. Sealing ring; 7. Water valve. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Reference Figure 1-8An energy recovery device for a boiler includes a water tank 1. A water inlet pipe 102 is connected to the side wall of the water tank 1, and a drain pipe 103 is connected to the bottom of the water tank 1. Water valves 7 are installed on both the water inlet pipe 102 and the drain pipe 103. Specifically, the water inlet pipe 102 is used to connect to the outlet of the water collection pipe of the water collector in the heating system, and the drain pipe 103 is used to connect to the heating water inlet of the boiler. A first slot 101 is provided on the side wall of the water tank 1, and sliding grooves 104 are provided on both inner walls of the water tank 1. A water collection trough 2 is fixedly connected to the side wall of the water tank 1. The bottom of the water collection tank 2 has a funnel-shaped structure, which facilitates the collection of water at the bottom. The bottom of the water collection tank 2 is connected to the inside of the water tank 1 through the water collection pipe 201, so that the water collected at the bottom of the water collection tank 2 can flow into the water tank 1 through the water collection pipe 201. The water collection tank 2 is interconnected with the heating box 4. A partition 3 is fixedly connected to the top of the water tank 1, and the heating box 4 is fixedly connected above the partition 3. Several second slots 301 are opened on the partition 3. One end of the partition 3 extends to the top of the water collection tank 2 and is separated from the side wall of the water collection tank 2. The upper surface of the partition 3 has several drainage channels 302, which extend through both ends of the partition 3. The ends of the drainage channels 302 closest to the water collection tank 2 are all inclined downwards to facilitate the flow of water from the heating box 4 into the water collection tank 2. The heating box 4 has a flue gas inlet 401 and a flue gas outlet 402 on both sides. Specifically, the flue gas inlet 401 is used to connect to the boiler's flue gas pipe, and the flue gas outlet 402 is used to connect to the flue gas pipe to discharge exhaust gas outdoors. The bottom of the heating box 4 is open. It also includes several... The heat-conducting component 5 includes a connecting plate 501 and several heat-conducting pipes 502. A protrusion 503 is fixedly connected to the bottom of the connecting plate 501. The protrusion 503 matches the second slot 301. Several heat-conducting components 5 are fixedly connected to the partition plate 3 through the protrusion 503. The top ends of several heat-conducting pipes 502 are located in the inner cavity of the heating box 4. The ends of several heat-conducting pipes 502 pass through the connecting plate 501 and the protrusion 503 in sequence and extend into the water tank 1, so that the temperature of the heating box 4 can be transferred to the water tank 1 through the heat-conducting pipes 502.The system also includes a filter assembly 6, which is movably inserted into the water tank 1 via a first slot 101. A gap exists between the filter assembly 6 and the bottom of the water tank 1, and the filter assembly 6 is located below the inlet pipe 102 and the collecting pipe 201, allowing water entering the water tank 1 to be filtered before flowing out. The filter assembly 6 includes a filter box 601, the outer wall of which is fitted against the inner wall of the water tank 1. Both sides of the filter box 601 are slidably connected to the inner wall of the water tank 1 via sliding grooves 104. A panel 603 is fixedly connected to the end of the filter assembly 6, located outside the water tank 1 and fitted against its outer wall, facilitating the operation of the filter assembly. 6. Disassembly, cleaning, and replacement are performed. A sealing ring 604 is fixedly connected to the side of the panel 603 near the water tank 1. The sealing ring 604 matches the first slot 101 to prevent water in the water tank 1 from flowing out through the gap between the filter assembly 6 and the water tank 1. Several drainage holes 601a are opened at the bottom of the filter box 601. Filter media 602 is placed inside the filter box 601. The filter media 602 includes a first filter screen 602a. Filter cotton 602b is fixedly connected above the first filter screen 602a. A second filter screen 602c is fixedly connected above the filter cotton 602b. Specifically, other filter media can be added according to usage requirements to better filter out impurities in the water.

[0029] In this utility model, before use, the inlet pipe 102 needs to be connected to the outlet of the water collection pipe of the heating pipe collector, and the drain pipe 103 needs to be connected to the heating water inlet of the heating boiler. During use, the water flowing back from various places is first collected into the water tank 1 through the collector. The exhaust gas generated after the boiler is heated enters the heating box 4 through the flue gas inlet 401, and washes the top of the heat conduction pipe 502 located in the heating box 4. The heat conduction pipe 502 transfers heat to the water tank 1, thereby preheating the water in the water tank 1. The preheated water enters the boiler again through the drain pipe 103 for reheating and then flows back to the heating system and is distributed to various parts of the room through the distributor. Since the water in the water tank 1 has been preheated using the temperature of the exhaust gas, the energy consumption required for boiler heating can be reduced, and the heat of the exhaust gas can be recovered and utilized.

[0030] When natural gas is burned, it produces water vapor. When the water vapor is mixed with the exhaust gas and discharged outward, some of the heat is absorbed when it encounters the heat conduction pipe 502 in the heating chamber. As a result, some of the water vapor will condense into water droplets, which will flow along the heat conduction pipe 502 to the lower partition 3, and then be collected in the water collection tank 2 through the diversion channel 302. The water will then flow into the water tank 1 through the water collection pipe 201, thus realizing the recycling of water vapor in the exhaust gas.

[0031] The water enters the water tank 1 through the inlet pipe 102 and the collection pipe 201 and is filtered by the crystal filter assembly 6. The water then flows out through the drain pipe 103, reducing impurities in the water and preventing these impurities from entering the heating pipes and affecting them. The filter assembly 6 adopts a pull-out design, which makes it easy to replace and clean the filter media.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An energy recovery device for boilers, characterized in that, Includes a water tank (1), the side wall of the water tank (1) is provided with a first slot (101), the inner walls of both sides of the water tank (1) are provided with sliding grooves (104), the side wall of the water tank (1) is fixedly connected with a water collection tank (2), the top of the water tank (1) is fixedly connected with a partition (3), the partition (3) is provided with a plurality of second slots (301), the top of the partition (3) is fixedly connected with a heating box (4), the heating box (4) is provided with a smoke inlet (401) and a smoke outlet (402) on both sides respectively, and the bottom of the heating box (4) is an open design; It also includes several heat-conducting components (5), each heat-conducting component (5) including a connecting plate (501) and several heat-conducting pipes (502). The bottom of the connecting plate (501) is fixedly connected to a protrusion (503), which matches the second slot (301). Several heat-conducting components (5) are fixedly connected to the partition plate (3) through the protrusion (503). The top ends of several heat-conducting pipes (502) are located in the inner cavity of the heating box (4). The ends of several heat-conducting pipes (502) pass through the connecting plate (501) and the protrusion (503) in sequence and extend into the water tank (1). It also includes a filter assembly (6), which is movably inserted into the water tank (1) through a first slot (101). The filter assembly (6) includes a filter box (601), and the bottom of the filter box (601) is provided with several water leakage holes (601a). Filter media (602) is placed inside the filter box (601).

2. The energy recovery device for a boiler according to claim 1, characterized in that, The water tank (1) has an inlet pipe (102) connected to its side wall and a drain pipe (103) connected to its bottom. Both the inlet pipe (102) and the drain pipe (103) are fitted with water valves (7).

3. The energy recovery device for a boiler according to claim 1, characterized in that, The bottom of the water collection tank (2) is a funnel-shaped structure, and the bottom of the water collection tank (2) is connected to the inside of the water tank (1) through the water collection pipe (201). The water collection tank (2) and the heating box (4) are interconnected.

4. The energy recovery device for a boiler according to claim 1, characterized in that, One end of the partition (3) extends above the water collection tank (2) and there is a gap between it and the side wall of the water collection tank (2). A plurality of diversion grooves (302) are provided on the upper surface of the partition (3). The plurality of diversion grooves (302) penetrate through both ends of the partition (3). The ends of the plurality of diversion grooves (302) near the water collection tank (2) are all inclined downward.

5. The energy recovery device for a boiler according to claim 1, characterized in that, There is a gap between the filter assembly (6) and the bottom of the water tank (1), and the filter assembly (6) is located below the water inlet pipe (102) and the water collection pipe (201).

6. The energy recovery device for a boiler according to claim 1, characterized in that, The outer wall of the filter box (601) is in contact with the inner wall of the water tank (1). The two sides of the filter box (601) are slidably connected to the inner wall of the water tank (1) through the sliding groove (104). The end of the filter assembly (6) is fixedly connected to a panel (603). The panel (603) is located outside the water tank (1) and is in contact with the outer wall of the water tank (1). A sealing ring (604) is fixedly connected to the side of the panel (603) near the water tank (1). The sealing ring (604) matches the first slot (101).

7. The energy recovery device for a boiler according to claim 1, characterized in that, The filter material (602) includes a first filter screen (602a), a filter cotton (602b) is fixedly connected above the first filter screen (602a), and a second filter screen (602c) is fixedly connected above the filter cotton (602b).

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