Anti-freezing type condensate water smoke exhaust device

Abstract

The utility model belongs to flue gas emission technical field, concretely relates to a kind of freeze-proof condensate water smoke exhaust device for condensing type gas equipment, device is integrated structure pipeline, including flue gas and condensate water entrance, for being connected with the smoke outlet of gas equipment;Flue gas anti-backflow valve plate assembly is set in device inside, and it is located behind flue gas and condensate water entrance, for preventing flue gas backflow, flue gas anti-backflow valve plate assembly is set as: when pipeline is positive pressure, flue gas anti-backflow valve plate assembly opens, when pipeline is zero pressure, the flue gas anti-backflow valve plate assembly falls under the action of reset spring and closes;Indoor condensate water outlet, adopt elbow structure to realize liquid seal;Outdoor condensate water outlet, located the bottom end of device, for quickly discharging condensate water;The utility model solves the problems of flue gas backflow and condensate water icing blockage under outdoor environment existing in traditional smoke outlet, simultaneously adapt to different use environment indoors and outdoors, guarantee the normal operation of condensing type gas equipment.

Description

Technical Field

[0001] This utility model belongs to the field of flue gas emission technology, specifically relating to an antifreeze condensate exhaust device for condensing gas appliances. It is particularly suitable for flue gas emission systems of gas appliances such as water heaters and boilers. Background Technology

[0002] With increasing demands for energy conservation and emission reduction, condensing gas turbine equipment has become widely used. These devices generate condensate water during flue gas emissions, thus requiring specialized exhaust outlet devices for treatment. Traditional exhaust outlets have the following problems:

[0003] First, the lack of anti-backflow valve plate assembly makes it easy for flue gas to backflow when multiple devices are connected in parallel; the flue gas from the operating equipment will backflow into the non-operating equipment, and then spread to the entire flue, burner and fan, causing corrosion of the combustion system and damage to electrical components.

[0004] Second, there is a lack of antifreeze protection. When outdoor equipment discharges condensate in winter, the condensate will freeze at the bottom of the exhaust port. If the low temperature continues and the equipment continues to run, the condensate will continue to accumulate, freeze, and block the exhaust port, causing abnormal exhaust and making the equipment unable to operate.

[0005] Third, there is a lack of effective cleaning and maintenance structures;

[0006] Therefore, it is necessary to design an antifreeze condensate exhaust device to improve the above-mentioned problems. Summary of the Invention

[0007] To address the problems of existing technologies, this utility model provides an antifreeze condensate exhaust device, which is an integrated pipe structure comprising:

[0008] Flue gas and condensate inlets are used to connect to the exhaust outlet of gas-fired equipment;

[0009] The flue gas backflow prevention valve plate assembly is installed inside the device and located behind the flue gas and condensate inlets to prevent flue gas backflow. The flue gas backflow prevention valve plate assembly is configured to open when the pipeline is under positive pressure and close when the pipeline is under zero pressure by falling down under the action of the reset spring.

[0010] The indoor condensate outlet uses a bent pipe structure to achieve a liquid seal, preventing flue gas from being discharged from the indoor condensate outlet and entering the room.

[0011] The outdoor condensate outlet is located at the bottom of the device and is used to quickly drain condensate.

[0012] Cleaning port, used to clean impurities inside the smoke exhaust outlet;

[0013] Furthermore, the flue gas anti-backflow valve plate assembly includes a one-way fixed plate and a one-way flap assembly arranged sequentially along the flue gas rising direction;

[0014] The unidirectional fixing plate is provided with several conical holes to allow the flue gas to flow in one direction and prevent backflow; the outer side of the unidirectional fixing plate is connected to the inner side of the pipe.

[0015] The one-way flap assembly includes a first one-way flap and a second one-way flap, which are connected by an elastic connector, which is rotatably installed inside the pipe.

[0016] Furthermore, the outer diameter of the one-way flap is adapted to the inner diameter of the pipe;

[0017] Furthermore, the elastic connector includes a rotating shaft, both ends of which are rotatably connected to the inner side of the pipe, and a return spring is sleeved on the rotating shaft;

[0018] Furthermore, the bending angle of the bend in the indoor condensate outlet is 90°-135°;

[0019] Furthermore, the inner diameter of the outdoor condensate outlet is 10mm-30mm;

[0020] Furthermore, the cleaning port is equipped with a sealable cover, which is connected to the cleaning port by threads;

[0021] The beneficial effects of this utility model are:

[0022] This utility model's condensate exhaust device adopts an integrated aluminum alloy cast pipe structure, which has antifreeze, anti-backflow, and easy-to-clean and maintain functions, solving the technical problems existing in the prior art. The device has a robust structure and can adapt to different indoor and outdoor installation environments, improving the device's versatility and durability. It is equipped with an anti-backflow valve plate assembly to effectively prevent flue gas backflow and protect non-operating equipment; it has two condensate outlets, one indoor and one outdoor, and the dual drain outlet design adapts to different installation environments, with the outdoor drain outlet having good antifreeze performance; the waste heat of the flue gas can automatically melt the ice; and a cleaning port is provided for easy cleaning and maintenance, extending its service life. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the antifreeze condensate exhaust device of this utility model;

[0024] Figure 2 Front view of the antifreeze condensate exhaust device of this utility model;

[0025] Figure 3 A cross-sectional structural diagram of the antifreeze condensate exhaust device of this utility model.

[0026] Figure label:

[0027] In the diagram: 1- Flue gas and condensate inlet, 2- Flue gas anti-backflow valve plate assembly, 3- Sewage cleaning port, 4- Indoor condensate outlet, 5- Outdoor condensate outlet, 6- Pipeline. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figure 1-3 This utility model provides an antifreeze condensate exhaust device, wherein the device is an integral structure pipe 6 made of aluminum alloy casting, comprising:

[0030] Flue gas and condensate inlet 1 is used to connect to the exhaust port of the gas equipment;

[0031] The flue gas backflow prevention valve plate assembly 2 is installed inside the device and located behind the flue gas and condensate inlet 1 to prevent flue gas backflow. The flue gas backflow prevention valve plate assembly 2 is configured to open when the pressure inside the pipe 6 is positive and close when the pressure inside the pipe 6 is zero under the action of the reset spring.

[0032] The indoor condensate outlet 4 uses a bent pipe structure to achieve liquid seal, preventing flue gas from being discharged from the indoor condensate outlet 4 into the room, thus ensuring the safety of the indoor environment.

[0033] The outdoor condensate outlet 5 is located at the bottom of the device and is used to quickly drain condensate; and when the outdoor condensate outlet 5 is blocked by freezing, the condensate can be drained from the indoor condensate outlet 4.

[0034] Cleaning port 3 is used to clean impurities inside the smoke exhaust port;

[0035] It should be noted that the device is a one-piece structure pipe 6 made of cast aluminum alloy. This material selection ensures lightweight, corrosion resistance, and structural strength, making it suitable for long-term operating environments. Includes:

[0036] The flue gas and condensate inlet 1 is designed as a standard interface for tight connection with the exhaust port of the gas equipment to ensure efficient flue gas inflow and treat the mixed fluid.

[0037] The flue gas anti-backflow valve plate assembly 2 is installed inside the device, located behind the flue gas and condensate inlet 1, to prevent flue gas backflow. This assembly is configured such that when there is positive pressure in the pipeline 6, the flue gas anti-backflow valve plate assembly 2 automatically opens under pressure; when there is zero pressure in the pipeline 6, the one-way flap assembly in the flue gas anti-backflow valve plate assembly 2 falls under the action of the return spring, forming a reliable seal and avoiding the risk of backflow.

[0038] The indoor condensate outlet 4 uses a bent pipe structure to achieve liquid seal. The bent design accumulates condensate to form a water seal barrier, preventing flue gas from escaping into the room and ensuring indoor air quality safety.

[0039] Outdoor condensate outlet 5 is located at the bottom of the device. It uses gravity to quickly discharge condensate and reduce water accumulation. When outdoor condensate outlet 5 is blocked by freezing in winter, the system automatically switches and condensate can be discharged smoothly from indoor condensate outlet 4, ensuring drainage continuity and reliability.

[0040] The cleaning port 3 is equipped with a sealable cover. The cover is connected to the cleaning port by threads or snaps and is designed to be detachable. It is used to regularly clean the impurities accumulated in the exhaust port, such as dust or sediment, to maintain the cleanliness and operating efficiency of the pipeline.

[0041] It is worth noting that the condensate exhaust device adopts an integrated structure pipe made of aluminum alloy, which has the functions of antifreeze, anti-backflow and easy cleaning and maintenance, solving the technical problems existing in the prior art. The device has a solid structure and can adapt to different indoor and outdoor installation environments, improving the versatility and durability of the device.

[0042] It integrates an anti-backflow valve plate assembly, which solves the problem of flue gas backflow when multiple equipment flues are connected in parallel or share a main flue, avoids corrosion of the combustion system and damage to electrical components of non-operating equipment, and extends the service life of the equipment; it effectively prevents flue gas backflow and protects non-operating equipment;

[0043] The system is equipped with two condensate outlets, one indoor and one outdoor. The bent pipe structure of the indoor condensate outlet 4 enables liquid sealing to prevent flue gas from overflowing. The outdoor condensate outlet 5 is located at the bottom to accelerate the discharge of condensate. In addition, when the outdoor condensate outlet 5 is frozen and blocked, the indoor condensate outlet 4 can serve as a backup outlet. The dual drain outlet design is suitable for different installation environments. The outdoor drain outlet has good antifreeze performance. The waste heat from the flue gas can help melt the ice.

[0044] The cleaning port 3 is provided to facilitate cleaning of the inside of the device, prevent impurities from clogging the device and affecting its normal operation, reduce maintenance difficulty, facilitate cleaning and maintenance, and extend service life.

[0045] Furthermore, the flue gas anti-backflow valve plate assembly 2 includes a one-way fixed plate and a one-way flap assembly arranged sequentially along the flue gas rising direction;

[0046] The unidirectional fixing plate is provided with several conical holes to allow the flue gas to flow in one direction and prevent backflow; the outer side of the unidirectional fixing plate is connected to the inner side of the pipe 6.

[0047] The one-way flap assembly includes a first one-way flap and a second one-way flap, which are connected by an elastic connector, which is rotatably installed inside the pipe 6.

[0048] It should be noted that the elastic connector provides thrust when the flue gas rises, causing the first and second one-way flaps to open outwards, allowing the flue gas to pass smoothly. When the flue gas flows backwards, the elastic connector quickly rebounds, driving the flaps to close inwards, forming a sealing barrier and completely blocking the backflow of flue gas. The diameter of the conical orifice increases along the direction of flue gas rise, and the pressure at the bottom of the conical orifice is greater than the pressure at the top, causing the flue gas to flow upwards in one direction, enhancing the efficiency of unidirectional flow. At the same time, the flaps are made of a high-temperature and corrosion-resistant alloy, ensuring reliability and durability during long-term operation. In addition, the opening and closing angle of the one-way flaps is precisely controlled by the elastic connector, avoiding excessive wear and extending the service life of the components.

[0049] Furthermore, the outer diameter of the one-way flap is matched with the inner diameter of the pipe 6 to ensure that a tight seal is formed when the one-way flap is closed, thereby completely blocking the backflow of flue gas into the pipe 6, preventing gas backflow, and avoiding corrosion of the combustion system of non-operating equipment and damage to electrical components.

[0050] Furthermore, the elastic connector includes a rotating shaft, both ends of which are rotatably connected to the inner side of the pipe 6, and a return spring is sleeved on the rotating shaft;

[0051] It should be noted that the elastic connector includes a rotating shaft, both ends of which are rotatably connected to the inner side of the pipe 6. A return spring is fitted onto the rotating shaft. The elastic parameters of the return spring are mainly determined by the pressure conditions inside the pipe 6. Specifically, when there is positive pressure inside the pipe 6, the design of the return spring must ensure that the flue gas backflow prevention valve assembly can open smoothly; while when the pipe 6 is under zero pressure, the spring force of the return spring must be strong enough to reliably close the flue gas backflow prevention valve assembly. This parameter setting needs to comprehensively consider factors such as the system's working pressure range, the weight of the valve assembly, frictional resistance, and material properties to ensure automatic response to pressure changes and effectively prevent flue gas backflow.

[0052] Furthermore, the bending angle of the bend in the indoor condensate outlet 4 is 90°-135°; the bend design accumulates condensate to form a water seal barrier, preventing flue gas from escaping into the room and ensuring indoor air quality safety.

[0053] Furthermore, the inner diameter of the outdoor condensate outlet 5 is 10mm-30mm, enabling rapid drainage of condensate.

[0054] Furthermore, the cleaning port 3 is equipped with a sealable cover, which is connected to the cleaning port by threads or snaps; it adopts a detachable design for regularly cleaning impurities such as dust or sediment accumulated in the exhaust port, maintaining pipeline cleanliness and operating efficiency.

[0055] It should be noted that this utility model of an anti-freeze condensate exhaust device is used for condensing gas equipment, and is particularly suitable for the flue gas emission systems of gas equipment such as water heaters and boilers. It adopts an integral aluminum alloy cast pipe structure, which is robust and adaptable to different indoor and outdoor installation environments. The overall structure includes the following parts:

[0056] Flue gas and condensate inlet 1: This inlet connects to the exhaust port of equipment such as boilers, hot water boilers, and volumetric furnaces. It serves as the channel for flue gas and condensate to enter the device, ensuring smooth entry of flue gas and condensate into the device. Flue gas anti-backflow valve plate assembly 2: Located inside the device and behind flue gas and condensate inlet 1, when the equipment fan is running, the entire pipeline 6 is under positive pressure. Under this positive pressure, the anti-backflow flap opens, allowing the flue gas to be discharged normally. When the equipment fan is off or stopped, the pipeline 6 is under zero pressure, and the one-way flap assembly returns to its original position by a reset spring, thus preventing flue gas from other equipment from entering non-operating equipment through this device, achieving the function of preventing flue gas backflow. Cleaning port 3: Used to clean impurities in the exhaust port. When the condensate outlet is clogged, the cleaning port 3 can be opened, and simple tools can be used to remove rust, leaves, and other debris. Afterward, the exhaust port can be cleaned with high-pressure water. After cleaning, the cleaning port 3 can be closed.

[0057] Indoor condensate outlet 4: When the equipment is installed indoors, condensate is discharged from this outlet. The indoor condensate outlet 4 has a bent pipe structure, which can achieve a liquid seal function, effectively preventing flue gas from being discharged into the room from the indoor condensate outlet 4, ensuring the safety of the indoor environment.

[0058] Outdoor condensate outlet 5: When the equipment is installed outdoors, condensate is discharged from this outlet. Located at the bottom of the equipment, this design allows for the fastest and smoothest drainage of condensate, reducing its residence time within the device and preventing accumulation. Simultaneously, during equipment operation, the flue gas temperature typically ranges from 60-180℃. This high-temperature flue gas helps to defrost, melting ice in the exhaust port and ensuring unobstructed condensate drainage.

[0059] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 freeze-proof condensate exhaust device, characterized in that, The device is an integrated pipe structure, comprising: Flue gas and condensate inlets are used to connect to the exhaust outlet of gas-fired equipment; The flue gas backflow prevention valve plate assembly is installed inside the device and located behind the flue gas and condensate inlets to prevent flue gas backflow. The flue gas backflow prevention valve plate assembly is configured to open when the pipeline is under positive pressure and close when the pipeline is under zero pressure by falling down under the action of the reset spring. The indoor condensate outlet uses a bent pipe structure to achieve a liquid seal, preventing flue gas from being discharged from the indoor condensate outlet into the room; The outdoor condensate outlet is located at the bottom of the device and is used to quickly drain condensate. The cleaning port is used to clean impurities inside the smoke exhaust outlet.

2. The antifreeze condensate exhaust device according to claim 1, characterized in that, The flue gas anti-backflow valve plate assembly includes a one-way fixed plate and a one-way flap assembly arranged sequentially along the flue gas rising direction. The unidirectional fixing plate is provided with several conical holes to allow the flue gas to flow in one direction and prevent backflow; the outer side of the unidirectional fixing plate is connected to the inner side of the pipe. The one-way flap assembly includes a first one-way flap and a second one-way flap, which are connected by an elastic connector, which is rotatably installed inside the pipe.

3. The antifreeze condensate exhaust device according to claim 2, characterized in that, The outer diameter of the one-way flap is matched with the inner diameter of the pipe.

4. The antifreeze condensate exhaust device according to claim 2, characterized in that, The elastic connector includes a rotating shaft, both ends of which are rotatably connected to the inside of the pipe, and a return spring is sleeved on the rotating shaft.

5. The antifreeze condensate exhaust device according to claim 1, characterized in that, The bending angle of the bend in the indoor condensate outlet is 90°-135°.

6. The antifreeze condensate exhaust device according to claim 1, characterized in that, The inner diameter of the outdoor condensate outlet is 10mm-30mm.

7. The antifreeze condensate exhaust device according to claim 1, characterized in that, The cleaning port is equipped with a sealable cover, which is connected to the cleaning port by threads.

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