Novel low-resistance variable air volume dynamic distribution valve for air conditioner

Abstract

The utility model relates to the field of air conditioner air supply equipment, in particular to a novel low-resistance variable air volume dynamic distribution valve for an air conditioner, which comprises a valve body, a main air duct is arranged at one end of the valve body, a first branch pipe is arranged at the other end of the valve body, and a second branch pipe is arranged on one side of the valve body; the valve plate is hinged between the first branch pipe and the second branch pipe; the driver is arranged between the main air duct and the first branch pipe and is connected with the valve plate; and a controller, wherein the driver is electrically connected with the controller. In the air distribution process, the air supply resistance of the main air duct cannot be increased, so that the air supply efficiency is higher, and the energy consumption is reduced.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning air supply equipment, specifically to a novel low-resistance variable air volume dynamic distribution valve for air conditioning. Background Technology

[0002] Our traditional air conditioning system consists of a cold / heat source system and a supply air system. It delivers treated air into the room through several air vents to create a suitable air environment. In a variable air volume (VAV) system, a flow control valve is needed to control the amount of air delivered into the room. Traditionally, these valves control the airflow by adjusting the opening angle of the valve blades. They are indispensable terminal accessories in VAV systems, typically used in the branch ducts of the supply air system, controlling the airflow by changing the valve's resistance.

[0003] Existing airflow regulating valves have some shortcomings: 1. They are resistance-type valves, controlling airflow based on the magnitude of resistance, which is not energy-efficient. 2. They cannot accurately adjust the indoor airflow to the required level, and their level of intelligence is low. Utility Model Content

[0004] This invention provides a novel low-resistance variable air volume dynamic distribution valve for air conditioners. During the air volume distribution process, it does not increase the air supply resistance of the main air duct, thus resulting in higher air supply efficiency and reduced energy consumption.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel low-resistance variable air volume dynamic distribution valve for air conditioning, comprising: a valve body, one end of which is provided with a main air duct, and the other end with a first branch pipe, and one side of which is provided with a second branch pipe; a valve plate, which is hinged between the first branch pipe and the second branch pipe; a driver, which is disposed between the main air duct and the first branch pipe and connected to the valve plate; and a controller, which is electrically connected to the driver.

[0006] Preferably, a chamfer is provided between the main air duct and the second branch pipe, and the driver is disposed on the chamfer.

[0007] Preferably, the actuator is an electric cylinder vertically fixed in the center of the chamfer; the valve plate is provided with a slider on one side corresponding to the second branch pipe, the telescopic end of the actuator is hinged to the slider, and the valve plate is provided with a slide rail corresponding to the slider.

[0008] Preferably, the actuator is located outside the valve body; a through control hole is provided in the center of the chamfer, and the telescopic end of the actuator extends into the valve body through the control hole.

[0009] Preferably, the slide is a dovetail groove structure located in the center of the valve plate, and the slide is perpendicular to the hinge axis of the valve plate; the slider is engaged with the slide by a dovetail tenon.

[0010] Preferably, the chamfered angle is 45 degrees to the main air duct.

[0011] The advantages of this invention are as follows: compared to traditional resistance-type valves, it does not increase the air supply resistance of the main duct during air volume distribution, thus resulting in higher air supply efficiency and reduced energy consumption. Furthermore, the valve opening can be precisely adjusted by combining the controller with data curves, thereby improving the intelligent regulation of the distribution valve. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the valve plate in the half-open state of this utility model;

[0015] Figure 3 This is a schematic diagram of the valve plate of this utility model in the fully open state.

[0016] In the diagram: 1. Valve body; 2. Main air duct; 3. First branch pipe; 4. Second branch pipe; 5. Valve plate; 6. Actuator; 7. Chamfer; 8. Slider; 9. Slide rail. Detailed Implementation

[0017] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] according to Figure 1 , Figure 2 , Figure 3As shown, a novel low-resistance variable air volume dynamic distribution valve for air conditioning includes: a valve body 1, with a main air duct 2 at one end and a first branch pipe 3 at the other end, and a second branch pipe 4 on one side of the valve body 1; a valve plate 5, which is hinged between the first branch pipe 3 and the second branch pipe 4; an actuator 6, which is disposed between the main air duct 2 and the first branch pipe 3 and connected to the valve plate 5; and a controller, which is electrically connected to the actuator 6.

[0019] The main air duct 2 and the second branch pipe 4 are provided with a chamfer 7, and the actuator 6 is disposed on the chamfer 7. The actuator 6 is an electric cylinder that is vertically fixed in the center of the chamfer 7; the valve plate 5 is provided with a slider 8 on one side corresponding to the second branch pipe 4, the telescopic end of the actuator 6 is hinged to the slider 8, and the valve plate 5 is provided with a slide rail 9 corresponding to the slider 8.

[0020] In this setup, the driver 6 is powered by a stepper motor, while the controller can be a YF-53 serial stepper controller. The controller will then issue commands from the computer to make the extension end of the driver 6 perform quantitative extension and retraction movements, thereby changing the angle of the valve plate 5 and distributing the air volume.

[0021] Compared to traditional resistance-type valves, this design does not increase the airflow resistance of the main duct 2 during airflow distribution, resulting in higher airflow efficiency and reduced energy consumption. Furthermore, the opening of the valve plate 5 can be precisely adjusted via a controller combined with data curves, thereby improving the intelligent regulation of the distribution valve.

[0022] In one embodiment, data on the characteristics of the distribution valve were collected. The cross-sectional dimensions of the main air duct 2 were set to 400mm × 400mm, and the dimensions of the first branch pipe 3 and the second branch pipe 4 were both 250mm × 250mm. The main air duct 2 is connected to the fan. The output voltage of the fan transformer is adjustable, so the power of the fan can be changed by changing the output voltage of the transformer, thereby changing the total air volume. Initially, the transformer output voltage is at its maximum, and the fan output air volume is 1620m³ / h. 3 / h, via the controller, the free end of valve plate 5 is positioned in the middle of valve body 1, such as Figure 2As shown, valve plate 5 is positioned 20cm from the starting point. At this point, the projection of valve plate 5 onto the cross-section of the main air duct 2 is half of the cross-sectional area. The theoretical ratio of the airflow into the first branch pipe 3 and the second branch pipe 4 is 1:1. After the airflow stabilizes, the air velocity at the outlets of the first branch pipe 3 and the second branch pipe 4 is measured using a flowmeter. During the measurement process, air velocity data is measured at five locations: the upper, lower, left, right, and middle of the outlets of the first branch pipe 3 and the second branch pipe 4. The average value of the data from these five points is calculated to determine the average flow velocity at the outlet cross-sections of the first branch pipe 3 and the second branch pipe 4. The volumetric flow rate of the first branch pipe 3 and the second branch pipe 4 is then calculated using the known cross-sectional area of ​​the air outlet. During the measurement process, the flowmeter sensor should be kept perpendicular at all times. Furthermore, after each measurement, the valve opening angle is kept constant, and the transformer is adjusted to reduce the output voltage before the next measurement is performed. This process is repeated until the voltage drops to the lowest level, and this data is recorded as a set. After a set of data measurements are completed, the opening of valve plate 5 is changed by the controller, reducing the distance from the end of valve plate 5 to the duct wall to 18.5cm. The above measurement process is repeated until the distribution valve is closed to its minimum. Based on this test data, the air volume distribution characteristic curve of this distribution valve under normal demand can be obtained. Finally, the air volume is adjusted to the maximum, and then the air valve is adjusted to the initial position, that is, the projected area occupies half of the duct cross-sectional area. Keeping the fan output power constant, the opening angle of the distribution valve is gradually increased. After the wind speed stabilizes, the outlet wind speed of the first branch pipe 3 and the second branch pipe 4 is measured with an anemometer. The measurement method and measurement requirements are the same as the previous set of experiments.

[0023] Further experiments and research were conducted under various operating conditions for ducts of different sizes, with the number of branch pipes in the experimental model increased to measure the flow distribution effect of the distribution valve. The experimental results were then statistically analyzed and summarized to create a database of airflow distribution for the distribution valve system. This allows the valves to undergo machine learning, enabling increasingly precise automatic adjustments in later engineering projects using data directly from this database. Finally, once the database is complete, further optimization of the variable air volume (VAV) system will be pursued. Because this distribution valve distributes flow independently of pressure and has communication capabilities, compared to traditional methods, it offers clearer patterns, stronger indication, easier adjustment, lower cost, and less noise, overcoming the shortcomings of current VAV systems.

[0024] The actuator 6 is located outside the valve body 1; a through control hole is provided in the center of the chamfer 7, and the telescopic end of the actuator 6 extends into the valve body 1 through the control hole. In this design, the actuator 6, located outside the valve body 1, passes through the control hole to change the opening of the valve plate 5, thereby avoiding its body from causing resistance to the airflow.

[0025] The slide rail 9 is a dovetail groove structure located in the center of the valve plate 5, and the slide rail 9 is perpendicular to the hinge axis of the valve plate 5; the slider 8 is engaged with the slide rail 9 via a dovetail tenon. In this structure, the slider 8 is stably engaged with the slide rail 9, and adaptively changes its position on the slide rail 9 according to the constraint of the extension end of the actuator 6, providing push-pull control for the valve plate 5, so that the valve plate 5 can precisely rotate around the hinge axis.

[0026] The chamfer 7 forms a 45-degree angle with the main air duct 2. This angle design conforms to fluid mechanics and satisfies the air supply requirements of the valve plate 5 to the second branch pipe 4 at various angles.

[0027] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A new type of low-resistance variable air volume dynamic distribution valve for air conditioning, characterized in that, Include: Valve body (1), the valve body (1) is equipped with main air duct (2) in one end, and is equipped with first branch pipe (3) in the other end, and is equipped with second branch pipe (4) in one side of the valve body (1); Valve plate (5), the valve plate (5) is hinged between the first branch pipe (3) and the second branch pipe (4); Driver (6), the driver (6) is arranged between the main air duct (2) and the first branch pipe (3), and is connected with the valve plate (5); Controller, the driver (6) is electrically connected with the controller.

2. The new type of low-resistance variable air volume dynamic distribution valve for air conditioning according to claim 1, characterized in that: The main air duct (2) and the second branch pipe (4) are provided with inclined chamfer (7), and the driver (6) is arranged on the inclined chamfer (7).

3. The new type of low-resistance variable air volume dynamic distribution valve for air conditioning according to claim 2, characterized in that: The driver (6) is an electric cylinder vertically fixed in the center of the inclined chamfer (7);The valve plate (5) is provided with a sliding block (8) on one side corresponding to the second branch pipe (4), and the telescopic end of the driver (6) is hinged with the sliding block (8), and the valve plate (5) is provided with a slide (9) corresponding to the sliding block (8).

4. The new type low-resistance variable air volume dynamic distribution valve for air conditioner according to claim 3, characterized in that: The driver (6) is located outside the valve body (1);The central part of the inclined chamfer (7) is provided with a control hole, and the telescopic end of the driver (6) extends to the inside of the valve body (1) through the control hole.

5. The new type low resistance variable air volume dynamic distribution valve for air conditioner according to claim 3, characterized in that: The slide (9) is a dovetail groove structure arranged in the center of the valve plate (5), and the slide (9) is perpendicular to the hinge shaft of the valve plate (5);The sliding block (8) is matched with the slide (9) through dovetail.

6. The new type low resistance variable air volume dynamic distribution valve for air conditioner according to claim 2, characterized in that: The angle between the inclined chamfer (7) and the main air duct (2) is 45 degrees.

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