Green building heating ventilation exhaust structure

Abstract

The utility model discloses a kind of green building heating ventilation exhaust structures, it is related to heating ventilation exhaust technology field, including connecting pipe, the upper end of the connecting pipe is arrayed and is provided with multiple exhaust ports, the lower end inside the connecting pipe is equipped with support rod, the top of the support rod is rotatably connected with rotating rod by bearing, the top of the rotating rod is rotatably connected with sliding rod by bearing, the outside of the sliding rod is equipped with float, the outside of the rotating rod is provided with self-cleaning assembly. In the utility model, by setting up the self-cleaning assembly consisting of blade, scraper one and scraper two, rotate by exhaust airflow drive, synchronously scrape connecting pipe inner wall and float bottom, can prevent scale from adhering and accumulating on these key surfaces from root, completely solve the mechanical jam problem caused by scale, adopt inverted conical archimedes helical blade, can efficiently convert the kinetic energy of exhaust airflow into rotary mechanical energy, drive cleaning mechanism to work, without external power, energy saving and high reliability.

Description

Technical Field

[0001] This utility model relates to the field of HVAC exhaust technology, and in particular to a green building HVAC exhaust structure. Background Technology

[0002] In the HVAC water circulation system of green buildings, dissolved air in the water will continuously be released and accumulate at the highest point of the pipe, forming an airlock that hinders water circulation, seriously reduces the heat exchange efficiency of the system, and leads to energy waste. Existing technologies generally use automatic air vent valves to solve this problem. The core principle is to use the buoyancy of the float to open and close the air vent.

[0003] However, traditional air vent valves face a fatal flaw in long-term use: minerals in the system water will continuously form scale. Scale accumulates on the inner wall of the valve cavity, the float, and moving parts, causing the float to become stuck and eventually leading to air vent valve failure—either it cannot float up to release air, or it cannot fall down to close and continues to leak. This not only affects system efficiency but also requires frequent manual maintenance or replacement, increasing operation and maintenance costs, which is inconsistent with the concept of green building energy conservation and low maintenance. Utility Model Content

[0004] The purpose of this utility model is to propose a green building HVAC exhaust structure in order to solve the above-mentioned problems.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a green building HVAC exhaust structure, including a connecting pipe, with multiple exhaust ports arrayed at the upper end of the connecting pipe, a support rod installed at the lower end inside the connecting pipe, a rotating rod rotatably connected to the top of the support rod via a bearing, a sliding rod rotatably connected to the top of the rotating rod via a bearing, a float ball sleeved on the outer side of the sliding rod, a self-cleaning component provided on the outer side of the rotating rod, the self-cleaning component including blades arrayed on the outer side of the rotating rod, a connecting rod installed on the outer side of the blades, a scraper first installed on the outer side of the connecting rod, a fixing rod installed on the top of the blades, a top plate installed on the top of the fixing rod, and a scraper second installed on the top of the top plate.

[0006] Preferably, the blades are in the shape of an inverted conical Archimedean spiral, the first scraper is arc-shaped, and the second scraper is spiral-shaped.

[0007] Preferably, the connecting pipe includes an air inlet pipe connected to an external HVAC system, a connecting cylinder integrally mounted on the top of the air inlet pipe, a cylinder cover provided on the top of the connecting cylinder, and a cylinder cap integrally mounted on the top of the cylinder cover.

[0008] Preferably, the vent is located on the outside of the cylinder cover, the support rod is installed at the bottom of the connecting cylinder, the top of the sliding rod is connected to the top inside the cylinder cover, the outer side of the first scraper is in contact with the inner wall of the connecting cylinder, and the top of the second scraper is in contact with the bottom of the float.

[0009] Preferably, side plates are installed on the outer sides of the contact surfaces of the connecting cylinder and the cylinder cover, and the two side plates are fixed by fasteners.

[0010] Preferably, bushings are provided on the outer sides of the bearings at the top and bottom of the rotating rod, and the bushings are tapered in shape.

[0011] Preferably, both the support rod and the connecting rod have a beveled bottom.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0013] 1. In this application, by setting a self-cleaning assembly consisting of blades, scraper one and scraper two, the exhaust airflow drives the rotation to simultaneously scrape the inner wall of the connecting pipe and the bottom of the float, which can prevent scale from adhering and accumulating on these key surfaces from the source and completely solve the mechanical jamming problem caused by scale.

[0014] 2. In this application, an inverted conical Archimedes spiral blade is used, which can efficiently convert the kinetic energy of the exhaust airflow into rotational mechanical energy to drive the cleaning mechanism. No external power is required, which is energy-saving and highly reliable. The scale and impurities scraped off by the blade fall naturally under the action of gravity and are guided by the inclined surface at the bottom of the support rod and connecting rod. They can then smoothly fall back into the main pipeline of the system through the intake pipe, avoiding accumulation in the valve body and causing secondary blockage. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure according to an embodiment of the present utility model is shown;

[0016] Figure 2 A cross-sectional view of the overall structure provided according to an embodiment of the present utility model is shown;

[0017] Figure 3 A schematic diagram of the rotating rod and self-cleaning assembly structure according to an embodiment of the present invention is shown;

[0018] Figure 4 A bottom view of the rotating rod, bushing, and blade structure provided according to an embodiment of the present invention is shown.

[0019] Legend:

[0020] 1. Connecting pipe; 101. Inlet pipe; 102. Connecting cylinder; 103. Cylinder cover; 104. Cylinder cap; 105. Side plate; 106. Fixing component; 2. Exhaust port; 3. Support rod; 4. Rotating rod; 401. Bushing; 5. Sliding rod; 6. Float; 7. Self-cleaning component; 701. Blade; 702. Connecting rod; 703. Scraper one; 704. Fixing rod; 705. Top plate; 706. Scraper two. Detailed Implementation

[0021] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-3 This utility model provides a technical solution: a green building HVAC exhaust structure, including a connecting pipe 1, the connecting pipe 1 including an air inlet pipe 101 connected to an external HVAC equipment, a connecting cylinder 102 integrally installed on the top of the air inlet pipe 101, a cylinder cover 103 provided on the top of the connecting cylinder 102, and a cylinder cap 104 integrally installed on the top of the cylinder cover 103.

[0023] The exhaust port 2 is opened on the outside of the cylinder cover 104, the support rod 3 is installed at the bottom of the connecting cylinder 102, the top of the slide rod 5 is connected to the top inside the cylinder cover 104, the outside of the scraper 1 703 is in contact with the inner wall of the connecting cylinder 102, and the top of the scraper 2 706 is in contact with the bottom of the float 6.

[0024] The connecting pipe 1 serves as the main body and outer shell of the entire exhaust structure. It adopts a split design and mainly includes the air inlet pipe 101 from top to bottom. It is a short pipe with a standard pipe diameter. The lower end is directly connected to the highest point of the external HVAC system pipe through threads or flanges. It is the channel for the system medium water and air to enter the valve body. Its inner diameter needs to ensure the smooth flow of water and air. The connecting cylinder 102, the cylinder cover 103 and the cylinder cap 104 form the valve cavity. The primary purpose of this design is to facilitate the installation, maintenance and cleaning of internal parts. The connecting cylinder 102, the cylinder cover 103 and the cylinder cap 104 constitute the closed structure at the top of the valve cavity.

[0025] The upper end of the connecting pipe 1 is arrayed with multiple exhaust ports 2. The lower end of the connecting pipe 1 is equipped with a support rod 3. The top of the support rod 3 is rotatably connected to a rotating rod 4 via a bearing. The top of the rotating rod 4 is rotatably connected to a sliding rod 5 via a bearing. A float ball 6 is sleeved on the outside of the sliding rod 5. A self-cleaning component 7 is provided on the outside of the rotating rod 4. The self-cleaning component 7 includes blades 701 arrayed on the outside of the rotating rod 4. A connecting rod 702 is installed on the outside of the blades 701. A scraper 703 is installed on the outside of the connecting rod 702. A fixing rod 704 is installed on the top of the blades 701. A top plate 705 is installed on the top of the fixing rod 704. A scraper 706 is installed on the top of the top plate 705.

[0026] Blade 701 is an inverted conical Archimedean spiral, scraper 1 703 is arc-shaped, and scraper 2 706 is spiral-shaped;

[0027] The Archimedes spiral profile is a spiral with equal pitch. This shape ensures that the airflow impacts the surface of the blade 701 at a constant angle of entry, achieving efficient momentum conversion and preventing airflow loss. This generates a huge rotational torque at the moment of startup, greatly improving the starting sensitivity and reliability of the mechanism. The inverted cone shape combined with the Archimedes spiral allows the gas entering the connecting cylinder 102 to be smoothly guided and constrained within the working area of ​​the blade 701, reducing turbulence and improving aerodynamic efficiency. Secondly, the centrifugal force generated during rotation will throw the scraped scale particles downward and outward along the cone surface, effectively preventing impurities from accumulating at the root of the blade 701 or in the bearing area.

[0028] The arc-shaped design of the scraper 703 needs to be tilted downwards during implementation so that the scale can be scraped off and slide down along its own tilt when rotating.

[0029] The spiral design of scraper 2 706 ensures that its contact with float 6 is a continuous line contact or multiple discrete point contacts, rather than a full surface contact. This brings two major advantages:

[0030] Effective scraping: When rotating, it can continuously and thoroughly scrape the entire bottom surface of the float 6, preventing scale buildup and ensuring that the float 6 will not stick to the slide bar 5;

[0031] Minimize resistance: The contact area with the float 6 is greatly reduced, thereby significantly reducing frictional resistance. This makes the up-and-down sliding of the float 6 exceptionally sensitive, almost unaffected by the rotational cleaning action, while also reducing the demand for drive torque.

[0032] Specifically, such as Figure 2As shown, side plates 105 are installed on the outer sides of the contact surfaces of the connecting cylinder 102 and the cylinder cover 103. The two side plates 105 are fixed by fasteners 106. In specific implementation, the fasteners 106 are preferably a combination of bolts and nuts. The bolts pass through the through holes on the upper and lower side plates 105 in sequence, and finally the nuts are tightened. This allows the connecting cylinder 102 and the cylinder cover 103 to be disassembled, so as to facilitate subsequent cleaning of the inside of the connecting cylinder 102 or replacement of internal components.

[0033] Specifically, such as Figure 4 As shown, bushings 401 are provided on the outer side of the bearings at the top and bottom of the rotating rod 4. The bushings 401 are tapered in shape. In order to cope with the harsh working conditions of the water in the HVAC system, which contains a lot of impurities and scale and is prone to causing the bearings to seize, the tapered bushings 401 are provided to prevent impurities from entering the bearings. The impurities will slide down along the tapered surface due to gravity.

[0034] Specifically, such as Figure 2 and Figure 3 As shown, both the support rod 3 and the connecting rod 702 have inclined surfaces at their bottoms. The scale and impurities that fall off will fall downwards under the action of gravity. When they come into contact with the inclined surface at the bottom of the support rod 3, they cannot stay on the inclined surface and will slide down the inclined surface. Similarly, the impurities that fall onto the inclined surface at the bottom of the connecting rod 702 will also be guided to a more open area. This effectively prevents impurities from accumulating at the root of these key structural components and avoids "bridging" blockage and narrowing of the flow channel.

[0035] In summary, the green building HVAC exhaust structure provided in this embodiment, when used:

[0036] Exhaust cleaning stage: When gas accumulates in cylinder cover 104, the liquid level drops, float 6 moves down along slide bar 5, opens exhaust port 2, high pressure gas enters from inlet pipe 101, impacts blade 701, drives the entire self-cleaning assembly 7 and rotating rod 4 to rotate at high speed, rotating scraper 1 703 scrapes off scale on the inner wall of connecting cylinder 102, rotating scraper 2 706 scrapes off scale at the bottom of float 6, the scraped impurities fall down the slope and are discharged back to the external HVAC equipment through inlet pipe 101, and the gas is finally discharged from exhaust port 2;

[0037] Sealing and closing stage: After the gas is exhausted, water flows in, the liquid level rises, the float 6 floats up, and finally the top of the cylinder cover 103 tightly seals the cylinder cover 104, closing the exhaust port 2 and achieving a seal. At this time, the self-cleaning component 7 stops rotating.

[0038] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A green building HVAC exhaust structure, characterized in that, The device includes a connecting pipe (1), with multiple exhaust ports (2) arrayed at the upper end of the connecting pipe (1). A support rod (3) is installed at the lower end inside the connecting pipe (1). A rotating rod (4) is rotatably connected to the top of the support rod (3) via a bearing. A sliding rod (5) is rotatably connected to the top of the rotating rod (4) via a bearing. A float (6) is sleeved on the outside of the sliding rod (5). A self-cleaning component (7) is provided on the outside of the rotating rod (4). The self-cleaning component (7) includes an array of blades (701) installed on the outside of the rotating rod (4). A connecting rod (702) is installed on the outside of the blades (701). A scraper (703) is installed on the outside of the connecting rod (702). A fixing rod (704) is installed on the top of the blades (701). A top plate (705) is installed on the top of the fixing rod (704). A scraper (706) is installed on the top of the top plate (705).

2. The green building HVAC exhaust structure according to claim 1, characterized in that, The blade (701) is an inverted conical Archimedean spiral, the first scraper (703) is arc-shaped, and the second scraper (706) is spiral-shaped.

3. The green building HVAC exhaust structure according to claim 1, characterized in that, The connecting pipe (1) includes an air inlet pipe (101) connected to an external HVAC system. A connecting cylinder (102) is integrally installed on the top of the air inlet pipe (101). A cylinder cover (103) is provided on the top of the connecting cylinder (102). A cylinder cap (104) is integrally installed on the top of the cylinder cover (103).

4. A green building HVAC exhaust structure according to claim 3, characterized in that, The exhaust port (2) is located on the outside of the cylinder cover (104), the support rod (3) is installed at the bottom of the connecting cylinder (102), the top of the sliding rod (5) is connected to the top inside the cylinder cover (104), the outside of the scraper one (703) is in contact with the inner wall of the connecting cylinder (102), and the top of the scraper two (706) is in contact with the bottom of the float (6).

5. A green building HVAC exhaust structure according to claim 3, characterized in that, Side plates (105) are installed on the outer side of the contact surface of the connecting cylinder (102) and the cylinder cover (103), and the two side plates (105) are fixed by fasteners (106).

6. A green building HVAC exhaust structure according to claim 1, characterized in that, Bushings (401) are provided on the outer sides of the bearings at the top and bottom of the rotating rod (4), and the bushings (401) are tapered in shape.

7. A green building HVAC exhaust structure according to claim 1, characterized in that, The bottom of both the support rod (3) and the connecting rod (702) is provided with a slope.

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