Condensing counterflow heat exchange water heater

Abstract

This utility model relates to the field of water heater technology and discloses a condensing counter-current heat exchange water heater, including a shell and a condensing chamber. A collection mechanism is installed at the bottom of the condensing chamber to collect and treat condensate. The collection mechanism includes a connecting pipe, a funnel fixedly connected to the bottom end of the connecting pipe, a filter screen fixedly connected to the top of the funnel, a flow pipe connected to the bottom of the connecting pipe, and a treatment chamber connected to the bottom end of the flow pipe. A neutralization component is installed inside the treatment chamber. In this utility model, the filter screen initially filters the condensate to remove large particulate impurities, the funnel accelerates the flow and collection of the condensate, and the condensate flows through the flow pipe to the treatment chamber. The chamber is filled with calcium carbonate particles. This mechanism performs multi-step treatment of the condensate to reduce acidity and ensure drainage efficiency, solving the problems of decreased drainage efficiency and pipe corrosion in existing technologies.

Description

Technical Field

[0001] This utility model relates to the field of water heater technology, and in particular to a condensing counter-current heat exchange water heater. Background Technology

[0002] A condensing counter-current heat exchange water heater is a type of gas water heater that utilizes energy efficiently. Its core feature is that it recovers the latent heat in the high-temperature flue gas generated after gas combustion through a special heat exchange design, mainly the heat released by water vapor condensation, thereby significantly improving thermal efficiency. Its main structure includes a combustion system, a heat exchange system, a flue gas emission system, a control system, and a water circuit system.

[0003] If the condensate produced during the operation of the equipment is discharged directly, it will not only corrode the drainage pipes but also waste water resources. In the existing technology, some water heaters are equipped with condensate collection devices, which often use simple trays or funnels to collect condensate and then discharge it directly to the sewer through pipes. At the same time, an anti-corrosion coating is applied to the drainage pipes to protect them. However, in actual use, the collection structure is simple in design, mostly flat or shallow trough type. Condensate is easy to remain and the collection speed is slow. Condensate may carry chemical deposits that stick to the surface of the drain pipe, causing pipe blockage and reduced drainage efficiency. At the same time, the anti-corrosion coating can only protect a limited length of pipe and does not fundamentally solve the problem of water corrosion. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a condensing counter-current heat exchange water heater, which aims to improve the problems of easy condensate residue and slow collection speed in the prior art, causing pipe blockage, reduced drainage efficiency and pipe corrosion.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a condensing counter-current heat exchange water heater, comprising a shell and a condensing chamber, wherein a collection mechanism is installed at the bottom of the condensing chamber, the function of which is to collect and treat condensate; an exhaust mechanism is installed at the top of the shell, the function of which is to protect and clean the exhaust section; the collection mechanism includes a connecting pipe, the connecting pipe being connected to the bottom of the condensing chamber; a funnel is fixedly connected to the bottom end of the connecting pipe, a filter screen is fixedly connected to the top of the funnel; a flow pipe is connected to the bottom of the connecting pipe, the bottom end of the flow pipe being connected to a treatment chamber; a bottom cover is threadedly connected to the bottom end of the treatment chamber; and a neutralization component is installed inside the treatment chamber.

[0006] As a further description of the above technical solution: The neutralization component includes a container installed in the middle of the inner wall of the processing chamber. The container contains calcium carbonate particles, and screens are fixedly connected to the top and bottom of the container.

[0007] As a further description of the above technical solution: The exhaust mechanism includes an exhaust pipe connected to the top of the housing. A flipping assembly is installed on the inner wall of the top of the exhaust pipe. A mounting bracket is fixedly connected to the middle of the inner wall of the exhaust pipe. A cleaning assembly is installed in the middle of the mounting bracket.

[0008] As a further description of the above technical solution: The flipping assembly includes a rotating shaft, which is fixedly connected to the inner wall of the top end of the exhaust pipe. A cover plate is rotatably connected to the outer wall of the rotating shaft, and torsion springs are fixedly connected to both the front and rear ends of the rotating shaft.

[0009] As a further description of the above technical solution: The cleaning assembly includes a propeller, which is fixedly connected to the middle of the inner wall of the exhaust pipe. A drive shaft is fixedly connected to the middle of the propeller, and the bottom end of the drive shaft is fixedly connected to the propeller. An installation strip is fixedly connected to the top end of the drive shaft, and brush heads are fixedly connected to both the left and right ends of the installation strip.

[0010] As a further description of the above technical solution: A drain pipe is connected to the middle of the bottom wall of the processing chamber, and a water tank is connected to the bottom end of the drain pipe. The water tank is fixedly connected to the bottom of the outer wall of the outer shell.

[0011] As a further description of the above technical solution: A water inlet is installed at the bottom right side of the outer casing, and the water inlet is connected to the bottom left side of the condensation chamber.

[0012] As a further description of the above technical solution: A combustion chamber is installed on the left side inside the outer casing, and a water outlet is connected to the left side of the outer wall of the combustion chamber.

[0013] This utility model has the following beneficial effects: 1. In this utility model, the filter screen initially filters the condensate to remove large particulate impurities, the funnel accelerates the flow and collection of the condensate, and the condensate flows to the treatment chamber through the flow pipe. The container is filled with calcium carbonate particles. The condensate is further filtered by the screen and then slowly flows through the calcium carbonate particles. When the calcium carbonate particles need to be replaced, the bottom cover is rotated to remove it from the treatment chamber and the container can be taken out. This mechanism treats the condensate in multiple steps to reduce acidity and ensure drainage efficiency, solving the problems of reduced drainage efficiency and pipe corrosion in the prior art.

[0014] 2. In this utility model, the cover plate is in a closed state when the water heater is not working, protecting the inner wall of the exhaust pipe from blockage and affecting the smoke exhaust efficiency. The cover plate rotates on the rotating shaft and is controlled. When the water heater is working, the exhaust gas discharged impacts the lower surface of the cover plate, overcoming the torsion spring torque and flipping to open the smoke exhaust channel. The exhaust gas also acts on the propeller. The propeller has a certain angle with the axial direction of the exhaust pipe and rotates under the impact of the airflow, driving the brush head to rotate on the inner wall surface of the exhaust pipe to clean the inner wall and prevent excessive adhesion of deposits from causing blockage of the exhaust pipe. Attached Figure Description

[0015] Figure 1 This is a perspective view of a condensing counter-current heat exchange water heater proposed in this utility model; Figure 2 This is a front view of a condensing counter-current heat exchange water heater proposed in this utility model; Figure 3 This is a split view of the collection mechanism of a condensing counter-current heat exchange water heater proposed in this utility model; Figure 4 This is a split view of the exhaust mechanism of a condensing counter-current heat exchange water heater proposed in this utility model; Figure 5 This is a diagram illustrating the flip-up component of a condensing counter-current heat exchange water heater proposed in this utility model.

[0016] Legend: 1. Outer shell; 2. Collection mechanism; 201. Connecting pipe; 202. Funnel; 203. Filter screen; 204. Flow pipe; 205. Processing chamber; 206. Neutralization component; 2061. Container box; 2062. Calcium carbonate granules; 2063. Screen; 207. Bottom cover; 3. Exhaust mechanism; 301. Exhaust pipe; 302. Tilting component; 3021. Cover plate; 3022. Rotating shaft; 3023. Torsion spring; 303. Mounting bracket; 304. Cleaning component; 3041. Propeller; 3042. Drive shaft; 3043. Mounting strip; 3044. Brush head; 4. Condensation chamber; 5. Drain pipe; 6. Water tank; 7. Inlet; 8. Combustion chamber; 9. Outlet. Detailed Implementation

[0017] 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.

[0018] Reference Figure 1 , Figure 2 and Figure 3An embodiment of this utility model is provided: a condensing counter-current heat exchange water heater, including a shell 1 and a condensing chamber 4. A collection mechanism 2 is installed at the bottom of the condensing chamber 4. The function of the collection mechanism 2 is to collect and process condensate. An exhaust mechanism 3 is installed at the top of the shell 1. The function of the exhaust mechanism 3 is to protect and clean the exhaust part. The collection mechanism 2 includes a connecting pipe 201, which is connected to the bottom of the condensing chamber 4. A funnel 202 is fixedly connected to the bottom end of the connecting pipe 201. A filter screen 203 is fixedly connected to the top of the funnel 202. A flow pipe 204 is connected to the bottom of the connecting pipe 201. A processing chamber 205 is connected to the bottom end of the processing chamber 205. A bottom cover 207 is threadedly connected to the bottom end of the processing chamber 205. A neutralization component 206 is installed inside the processing chamber 205. The neutralization component 206 includes a receiving box 2061, which is installed in the middle of the inner wall of the processing chamber 205. Calcium carbonate particles 2062 are disposed inside the receiving box 2061, and screens 2063 are fixedly connected to the top and bottom of the receiving box 2061. A drain pipe 5 is connected to the middle of the bottom wall of the processing chamber 205, and a water tank 6 is connected to the bottom end of the drain pipe 5. The water tank 6 is fixedly connected to the bottom of the outer wall of the outer shell 1. Specifically, the water vapor carried by the flue gas in the condensation chamber 4 condenses into water droplets upon contact with the condensation wall. These droplets flow along the surface of the condensation wall and enter the funnel 202 through the inlet of the connecting pipe 201. A filter screen 203 is installed at the top of the funnel 202. As the condensate flows into the funnel 202, it undergoes preliminary filtration through the filter screen 203, removing large particulate impurities that may have condensed along with the water vapor in the condensation chamber 4. The funnel 202 has a conical structure, wider at the top and narrower at the bottom, with its inner wall inclined to accelerate the flow and collection of the condensate towards the bottom outlet. The condensate flows out from the bottom of the funnel 202. The water then flows through the channel of the flow pipe 204 into the processing chamber 205. The container 2061 is a flat cylindrical structure, with its outer wall fitting against the inner wall of the processing chamber 205. The container 2061 is uniformly filled with calcium carbonate particles 2062. Its top and bottom surfaces are covered with screens 2063, which isolate it from other parts of the processing chamber 205. After the condensate flows in from the top of the processing chamber 205, it is further filtered by the top screen 2063 to remove fine impurities. Then it slowly flows through the calcium carbonate particles 2062 inside. The pH value of the condensate will increase due to the chemical reaction with the calcium carbonate particles 2062, reducing its overall acidity. When the calcium carbonate particles 2062 in the container 2061 have completely reacted and need to be replaced, hold the edge of the bottom cover 207 and rotate it to disassemble it from the bottom threaded connection of the processing chamber 205. The container 2061 can then be taken out directly from the processing chamber 205.

[0019] Reference Figure 4 and Figure 5The exhaust mechanism 3 includes an exhaust pipe 301, which is connected to the top of the housing 1. A flipping component 302 is installed on the inner wall of the top of the exhaust pipe 301. A mounting bracket 303 is fixedly connected to the middle of the inner wall of the exhaust pipe 301. A cleaning component 304 is installed in the middle of the mounting bracket 303. The flipping assembly 302 includes a rotating shaft 3022, which is fixedly connected to the inner wall of the top end of the exhaust pipe 301. A cover plate 3021 is rotatably connected to the outer wall of the rotating shaft 3022, and torsion springs 3023 are fixedly connected to both the front and rear ends of the rotating shaft 3022. The cleaning assembly 304 includes a propeller 3041, which is fixedly connected to the middle of the inner wall of the exhaust pipe 301. A drive shaft 3042 is fixedly connected to the middle of the propeller 3041. The propeller 3041 is fixedly connected to the bottom end of the drive shaft 3042. An installation strip 3043 is fixedly connected to the top end of the drive shaft 3042. Brush heads 3044 are fixedly connected to both the left and right ends of the installation strip 3043. Specifically, when the water heater is not in operation, the cover plate 3021 is in a closed state, its edge fitting against the port of the exhaust pipe 301 to protect the inner wall of the exhaust pipe 301 and prevent external debris from entering and causing blockages that could affect the exhaust efficiency. When the water heater starts working, the exhaust gas produced by combustion is discharged from inside the exhaust pipe 301 and impacts the lower surface of the cover plate 3021. The thrust of the exhaust gas overcomes the torque of the torsion spring 3023, causing the cover plate 3021 to flip over, fully opening the exhaust passage to ensure the flow of exhaust gas. During the flow of exhaust gas, it simultaneously acts on... The propeller 3041 installed inside the exhaust pipe 301 has a certain angle between its blades and the axis of the exhaust pipe 301. Under the continuous impact of the airflow, it will start to rotate around its own central axis. The rotating shaft of the propeller 3041 drives the brush head 3044 to rotate synchronously on the inner wall surface of the exhaust pipe 301 through the transmission structure. The bristles of the brush head 3044 contact the inner wall to clean the impurities attached to the inner wall, preventing excessive adhesion of deposits after long-term use, which may cause the inner diameter of the exhaust pipe 301 to shrink or become blocked.

[0020] Reference Figure 1 and Figure 2 A water inlet 7 is installed at the bottom right side of the outer casing 1. The water inlet 7 is connected to the bottom left side of the condenser chamber 4. A combustion chamber 8 is installed on the left side inside the outer casing 1. A water outlet 9 is connected to the left side of the outer wall of the combustion chamber 8. Specifically, cold water first enters the condenser chamber 4 through the inlet 7 for initial heating, then flows into the combustion chamber 8 for further heating, and is discharged through the outlet 9.

[0021] Working principle: Water vapor in the flue gas in condensation chamber 4 condenses into water droplets upon cooling. These droplets then enter the funnel 202 through connecting pipe 201 and undergo preliminary filtration through filter screen 203 to remove any large particles that may have entered the condensation chamber 4. The funnel 202 is conical, accelerating the flow and collection of condensate. The condensate flows through flow pipe 204 to the processing chamber 205. The receiving box 2061, a flat cylinder, is placed inside the processing chamber 205 and filled with calcium carbonate particles 2062. Its top and bottom surfaces are connected to the processing chamber 205 through screen 2063. He partially isolates the condensate, which is further filtered through screen 2063 and then slowly flows through calcium carbonate particles 2062. Its pH value will increase under the reaction, reducing its acidity. When it is necessary to replace the calcium carbonate particles 2062, the bottom cover 207 is rotated to remove it from the processing chamber 205, and the container 2061 can be taken out. This mechanism can perform multi-step treatment of condensate, reduce its acidity, and ensure drainage efficiency. It solves the problems of easy condensate residue and slow collection speed in the prior art, which cause pipe blockage, reduced drainage efficiency and pipe corrosion. The cover plate 3021 is closed when the water heater is not working, protecting the inner wall of the exhaust pipe 301 and preventing blockage that could affect the exhaust efficiency. The cover plate 3021 rotates on the rotating shaft 3022 and is controlled by the torsion spring 3023. When the water heater starts working, the exhaust gas impacts the lower surface of the cover plate 3021, overcoming the torque of the torsion spring 3023 and flipping it open the exhaust passage. The exhaust gas also acts on the propeller 3041. The propeller 3041 has a certain angle with the axis of the exhaust pipe 301. Under the impact of the airflow, it will start to rotate, driving the brush head 3044 to rotate on the inner wall surface of the exhaust pipe 301, thus cleaning the inner wall and preventing excessive adhesion of deposits that could cause blockage of the exhaust pipe 301.

[0022] 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 counter-current heat exchange water heater, comprising a shell (1) and a condensing chamber (4), characterized in that: The bottom of the condensation chamber (4) is equipped with a collection mechanism (2), which is used to collect and process condensate. The top of the outer shell (1) is equipped with an exhaust mechanism (3), which is used to protect and clean the exhaust parts. The collection mechanism (2) includes a connecting pipe (201) which is connected to the bottom of the condensation chamber (4). A funnel (202) is fixedly connected to the bottom end of the connecting pipe (201). A filter screen (203) is fixedly connected to the top of the funnel (202). A flow pipe (204) is connected to the bottom of the connecting pipe (201). A processing chamber (205) is connected to the bottom end of the flow pipe (204). A bottom cover (207) is threadedly connected to the bottom end of the processing chamber (205). A neutralization component (206) is installed inside the processing chamber (205).

2. The condensing reverse-flow heat exchange water heater according to claim 1, characterized in that: The neutralization component (206) includes a container (2061) installed in the middle of the inner wall of the processing chamber (205). Calcium carbonate particles (2062) are disposed inside the container (2061). Screens (2063) are fixedly connected to the top and bottom of the container (2061).

3. The condensing reverse-flow heat exchange water heater according to claim 1, characterized in that: The exhaust mechanism (3) includes an exhaust pipe (301) connected to the top of the housing (1). A flipping component (302) is installed on the inner wall of the top of the exhaust pipe (301). A mounting bracket (303) is fixedly connected to the middle of the inner wall of the exhaust pipe (301). A cleaning component (304) is installed in the middle of the mounting bracket (303).

4. The condensing reverse-flow heat exchange water heater according to claim 3, characterized in that: The flipping assembly (302) includes a rotating shaft (3022), which is fixedly connected to the inner wall of the top end of the exhaust pipe (301). A cover plate (3021) is rotatably connected to the outer wall of the rotating shaft (3022), and torsion springs (3023) are fixedly connected to both the front and rear ends of the rotating shaft (3022).

5. The condensing reverse-flow heat exchange water heater according to claim 3, characterized in that: The cleaning assembly (304) includes a propeller (3041), which is fixedly connected to the middle of the inner wall of the exhaust pipe (301). A drive shaft (3042) is fixedly connected to the middle of the propeller (3041). The bottom end of the drive shaft (3042) is fixedly connected to the propeller (3041). The top end of the drive shaft (3042) is fixedly connected to an installation strip (3043). Brush heads (3044) are fixedly connected to both the left and right ends of the installation strip (3043).

6. The condensing reverse-flow heat exchange water heater according to claim 1, characterized in that: The bottom wall of the processing chamber (205) is connected to a drain pipe (5), and the bottom end of the drain pipe (5) is connected to a water tank (6). The water tank (6) is fixedly connected to the bottom of the outer wall of the outer shell (1).

7. A condensing counter-current heat exchange water heater according to claim 1, characterized in that: A water inlet (7) is installed on the bottom right side of the outer casing (1), and the water inlet (7) is connected to the bottom left side of the condenser chamber (4).

8. The condensing reverse-flow heat exchange water heater according to claim 1, characterized in that: A combustion chamber (8) is installed on the left side inside the outer casing (1), and a water outlet (9) is connected to the left side of the outer wall of the combustion chamber (8).

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