Ventilation duct air outlet structure

Abstract

The application discloses a ventilation channel air outlet structure, which comprises a louver structure arranged at the ventilation channel air outlet, the louver structure comprises multiple rows of louvers arranged in parallel and at intervals, and a phase change material is arranged in the louver structure, characterized in that an automatic adjusting mechanism for summer or an automatic adjusting mechanism for winter is further arranged in the louver structure. The application can better match the air outlet of the ventilation channel air outlet with the requirement of a user, and improves the humanized control effect of ventilation and temperature control.

Description

[0001] This application is a divisional application of the patent "A method for controlling the air outlet of a ventilation duct" with patent application number 202210600832.1 and application date of May 30, 2022. Technical Field

[0002] This invention relates to the field of building temperature control and ventilation technology, specifically to a ventilation duct outlet structure. Background Technology

[0003] In large buildings such as hotels, office buildings, and shopping malls, as well as some high-end residential buildings, central air conditioning systems are typically used to control ventilation and temperature. These systems usually employ centralized cooling and heating units that distribute airflow to each room through ductwork. Air vents within the ducts supply air to the rooms. Existing ductwork typically incorporates louvers at these vents, which better guide airflow into the rooms and prevent small animals from entering. However, these louvered structures are usually fixed in place.

[0004] In some existing technologies, phase change materials are incorporated into the louver structure at the air duct opening. This leverages the energy storage properties of the phase change material to perform heat storage (or cooling) and heat release (or cooling) functions, thereby further regulating the load at the end of the temperature control system. For example, CN201710146827.7 discloses such an energy-saving louver, comprising a louver with a shell fixed to its upper part. The shell is internally divided into a first cavity and a second cavity by a partition. An air supply vent is provided on the side wall of the second cavity, and a return air vent is provided on the bottom surface of the first cavity. The return air vent is located above the louver blinds, while the air supply vent faces the room. An air duct penetrating the partition is installed on the partition. A fan is installed in the first cavity, with its outlet connected to the air duct. A fan wheel is installed in the second cavity, with heat-conducting pipes containing solid phase change material. A guide plate is installed at the end of the air duct near the second cavity, pointing towards the blades of the fan wheel.

[0005] The aforementioned existing technology incorporates phase change material (PCM) within the louver structure. During summer cooling, when the cooling temperature is low, the PCM absorbs and stores some of the cold air through condensation, preventing discomfort caused by sudden exposure to excessively cold air. Similarly, during winter heating, when the temperature is too high, the PCM absorbs and stores heat through vaporization, preventing discomfort caused by sudden exposure to excessively hot air. This effectively regulates the temperature of the air conditioning system's terminal load. However, this structure has a drawback: during summer cooling, if occupants lower their desired supply air temperature, it usually indicates a strong need for cooling. Therefore, while the PCM in the louver structure can absorb some cold air during a sudden temperature drop to prevent discomfort, this action itself reduces the amount of cold air delivered into the room, effectively reducing the cooling effect of the air outlets, which contradicts the user's actual needs. The same contradiction exists during winter heating, thus hindering the user-friendly control of the air conditioning system. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is: how to provide a ventilation duct vent control method and ventilation duct vent structure that can better match the air outlet of the ventilation duct with the user's needs and improve the humanized control effect.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] A method for controlling the airflow at a ventilation duct vent is disclosed. In this method, a phase change material is incorporated into the louver structure of the ventilation duct vent. When the supply air temperature exceeds the temperature of the phase change material, the heat absorption and release function of the phase change material during the phase change process is utilized to automatically adjust the heat of the outlet airflow to improve the comfort of the supply air. The method is characterized by automatically adjusting the inclination of the louvers in the louver structure during this process to increase the ventilation area and improve the airflow volume.

[0009] In this way, by automatically adjusting the louver tilt angle to increase the ventilation area, this method solves the problem that while phase change materials can absorb and release heat during the phase change process to improve air supply comfort when the outlet air temperature changes abruptly, this can lead to a decrease in the room's heating or cooling effect. By regulating the temperature and increasing the air volume, both air supply comfort and rapid temperature control within the room are ensured, thus improving the user-friendly control effect.

[0010] Furthermore, a path for the flow of phase change material is set within the phase change material storage space. During the phase change process, the flow of phase change material changes the center of gravity of the louver structure, thereby achieving automatic adjustment of the tilt of the louvers in the louver structure.

[0011] In this way, without the need for additional new devices or power sources, the automatic adjustment of the louver's tilt angle is achieved by utilizing the fluidity resulting from the phase change process of the phase change material itself. This method boasts advantages such as simple structure, stability, reliability, and low cost. Of course, in other possible implementations, the tilt angle of the louvers can also be adjusted through motor control or by using shape memory alloys that automatically deform according to temperature. However, these methods require additional devices or power sources, increasing costs and resulting in lower stability.

[0012] Furthermore, this method relies on the following ventilation duct vent structure, which includes a louver structure installed at the ventilation duct vent. The louver structure includes multiple rows of louvers arranged in parallel and spaced apart. A phase change material is installed in the louver structure. The louver structure also includes a summer automatic adjustment mechanism. The summer automatic adjustment mechanism includes a summer adjustment receiving cavity that is initially horizontal. The bottom surface of the summer adjustment receiving cavity is inclined from one end to the other. The summer adjustment receiving cavity contains a summer adjustment phase change material that is initially gaseous. After the summer adjustment phase change material liquefies, it can flow to the lower end of the summer adjustment receiving cavity to change the center of gravity position of the summer adjustment receiving cavity and drive the louvers to rotate.

[0013] In this way, when the ventilation duct outlet structure is installed and used, if the air outlet temperature drops below the preset level in summer, the phase change material used for summer regulation begins to absorb cold energy and liquefy, preventing discomfort caused by excessively low air outlet temperature. Simultaneously, the liquefied phase change material accumulates at the lower end of the receiving cavity, changing the center of gravity within the cavity and causing the louvers to rotate, increasing the ventilation area of ​​the outlet and ensuring that the cooling effect matches the user's desired performance. Therefore, it achieves a more user-friendly and automatic summer ventilation control effect.

[0014] Furthermore, the summer automatic adjustment mechanism includes a summer adjustment lever, the middle of which is rotatably mounted on the inner wall of the ventilation duct vent. The louvers and the summer adjustment lever are fixedly installed, and the summer adjustment receiving cavity is disposed inside the summer adjustment lever.

[0015] In this way, controlling the rotation of the summer adjustment lever can drive the rotation of all louvers, resulting in a simple structure, easy implementation, and better effect on opening and closing the louvers and increasing the ventilation area. In other possible implementations, the summer adjustment cavity can also be directly set inside the louvers, but such a louver structure is more complex, inconvenient to install, and has a higher implementation cost.

[0016] Furthermore, a porous hydrophobic material is provided at the higher end of the summer regulation cavity.

[0017] This allows its hydrophobic properties to be used to better force the liquefied phase change material to flow towards the lower end.

[0018] Furthermore, an adjusting torsion spring is installed between the summer regulating rotating rod and the inner wall of the ventilation duct outlet; the summer regulating receiving cavity has multiple parallel arrangements, and the phase change temperature of the summer regulating phase change material in each summer regulating receiving cavity is set from high to low.

[0019] This adjustment of the torsion spring's setting ensures that when the phase change material used for summer regulation liquefies upon cooling, causing a shift in the center of gravity of the regulating lever, it must overcome the torsion of the spring to rotate until the torque caused by the shift in center of gravity balances with the torsion spring's torque (without infinitely increasing the rotation to 90°). Furthermore, because the larger the rotation angle, the greater the torsion spring torque, this allows for balancing more rotation angles. Combined with multiple summer regulation cavities with different phase change temperatures, this creates a multi-level control effect. The lower the summer air outlet temperature (indicating a greater user demand for low ambient temperature), the larger the louver opening angle, the larger the ventilation area, and the better the ventilation effect, thus better matching the user's needs. Therefore, it significantly improves the user-friendly automatic control effect.

[0020] Furthermore, the louver structure is also equipped with an automatic winter adjustment mechanism, which includes a winter adjustment receiving cavity that is initially horizontal. The bottom surface of the winter adjustment receiving cavity is inclined from one end to the other. The winter adjustment receiving cavity and the summer adjustment receiving cavity are parallel and their bottom surfaces are inclined in opposite directions. A liquid storage cavity is also provided at the lowest end of the bottom surface of the winter adjustment receiving cavity. The end of the liquid storage cavity that is away from the direction of the winter adjustment receiving cavity is connected to the winter adjustment receiving cavity. The bottom surface of the winter adjustment receiving cavity is also covered with water-absorbing material and connected to the liquid storage cavity. The liquid storage cavity contains a winter adjustment phase change material that is initially liquid. After the winter adjustment phase change material is vaporized, it can change the position of the center of gravity in the winter adjustment receiving cavity and drive the louvers to rotate.

[0021] In this way, when the outlet air temperature exceeds the preset temperature during winter heating, the phase change material used for winter regulation begins to absorb heat and vaporize, preventing discomfort caused by excessively high outlet temperatures. Simultaneously, the vaporization of the phase change material changes the center of gravity within the winter regulation chamber, causing the louvers to rotate, increasing the ventilation area of ​​the air vents and ensuring that the heating effect matches the user's preferences. Therefore, it achieves a more user-friendly and automatic winter ventilation control effect. When the temperature drops again, the phase change material re-liquefies and, with the help of the water-absorbing material, re-enters the liquid storage chamber to restore balance. The liquid storage chamber design ensures that when the automatic adjustment mechanism rotates the louvers in summer, the phase change material for winter regulation remains within the liquid storage chamber, preventing a change in the center of gravity of the winter regulation chamber. This cleverly avoids interference between the winter and summer regulation chambers, ensuring that each functions independently.

[0022] Furthermore, the winter automatic adjustment mechanism includes a winter adjustment lever, the middle of which is rotatably mounted on the inner wall of the ventilation duct vent. The louvers and the winter adjustment lever are fixedly installed, and the winter adjustment receiving cavity is located inside the winter adjustment lever.

[0023] In this way, controlling the rotation of the winter adjustment lever can drive the rotation of all louvers, resulting in a simple structure, easy implementation, and better effect on opening and closing the louvers and increasing the ventilation area. In other possible implementations, the winter adjustment cavity can also be directly set inside the louvers, but such a louver structure is more complex, inconvenient to install, and has a higher implementation cost.

[0024] Furthermore, a porous hydrophobic material is provided at the higher end of the winter regulation cavity.

[0025] This allows its hydrophobic properties to be used to better force the liquefied phase change material to flow and reset towards one end of the storage cavity.

[0026] Furthermore, the winter regulation accommodating cavity has multiple accommodating cavities arranged in parallel, and the phase change temperature of the winter regulation phase change material in each winter regulation accommodating cavity is set from high to low.

[0027] In this way, by using the adjusting torsion spring installed between the adjusting rod for summer and the inner wall of the ventilation duct outlet, a multi-level adjustment function can be achieved in winter.

[0028] Furthermore, the winter adjustment lever and the summer adjustment lever are each fixed to both ends of the louver and form a rectangle.

[0029] This structure is simpler, more reliable, and more stable.

[0030] In summary, this invention enables a better match between the airflow from the ventilation duct vents and the user's needs, thereby improving the user-friendly control of ventilation and temperature. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the ventilation duct and air outlet structure during implementation.

[0032] Figure 2 for Figure 1 A perspective view of the automatic adjustment mechanism in summer.

[0033] Figure 3 for Figure 1 A perspective view of the automatic adjustment mechanism for winter.

[0034] Figure 4 For installation Figure 1 A perspective view of the ventilation duct of the structure. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to specific embodiments.

[0036] In specific implementation: A method for controlling the air outlet of a ventilation duct. In this method, a phase change material is set in the louver structure of the ventilation duct outlet. When the supply air temperature exceeds the temperature of the phase change material, the heat absorption and release function of the phase change material during the phase change process is used to automatically adjust the heat of the outlet airflow to improve the comfort of the supply air. Its feature is that the tilt of the louvers in the louver structure is automatically adjusted during the process to increase the ventilation area and increase the air volume.

[0037] In this way, by automatically adjusting the louver tilt angle to increase the ventilation area, this method solves the problem that while phase change materials can absorb and release heat during the phase change process to improve air supply comfort when the outlet air temperature changes abruptly, this can lead to a decrease in the room's heating or cooling effect. By regulating the temperature and increasing the air volume, both air supply comfort and rapid temperature control within the room are ensured, thus improving the user-friendly control effect.

[0038] During implementation, a path for the flow of phase change material is set within the phase change material storage space. During the phase change process, the flow of phase change material changes the center of gravity of the louver structure, thereby achieving automatic adjustment of the tilt of the louvers in the louver structure.

[0039] In this way, without the need for additional new devices or power sources, the automatic adjustment of the louver's tilt angle is achieved by utilizing the fluidity resulting from the phase change process of the phase change material itself. This method boasts advantages such as simple structure, stability, reliability, and low cost. Of course, in other possible implementations, the tilt angle of the louvers can also be adjusted through motor control or by using shape memory alloys that automatically deform according to temperature. However, these methods require additional devices or power sources, increasing costs and resulting in lower stability.

[0040] Specifically, this method relies on Figure 1-4 The ventilation duct vent structure shown is implemented. The ventilation duct vent structure includes a louver structure installed at the ventilation duct vent 1. The louver structure includes multiple rows of louvers 2 arranged in parallel and spaced apart. A phase change material is installed in the louver structure. The louver structure also includes a summer automatic adjustment mechanism. The summer automatic adjustment mechanism includes a summer adjustment receiving cavity 3 that is initially horizontally arranged. The bottom surface of the summer adjustment receiving cavity 3 is inclined from one end to the other. The summer adjustment receiving cavity 3 contains a summer adjustment phase change material that is initially gaseous. After the summer adjustment phase change material is liquefied, it can flow to the lower end of the summer adjustment receiving cavity to change the center of gravity position of the summer adjustment receiving cavity and drive the louvers to rotate.

[0041] In this way, when the ventilation duct outlet structure is installed and used, if the air outlet temperature drops below the preset level in summer, the phase change material used for summer regulation begins to absorb cold energy and liquefy, preventing discomfort caused by excessively low air outlet temperature. Simultaneously, the liquefied phase change material accumulates at the lower end of the receiving cavity, changing the center of gravity within the cavity and causing the louvers to rotate, increasing the ventilation area of ​​the outlet and ensuring that the cooling effect matches the user's desired performance. Therefore, it achieves a more user-friendly and automatic summer ventilation control effect.

[0042] The automatic summer adjustment mechanism includes a summer adjustment lever 4, which is rotatably installed on the inner wall of the ventilation duct vent 1. The louvers 2 and the summer adjustment lever 4 are fixedly installed, and the summer adjustment receiving cavity 3 is located inside the summer adjustment lever 4.

[0043] In this way, controlling the rotation of the summer adjustment lever can drive the rotation of all louvers, resulting in a simple structure, easy implementation, and better effect on opening and closing the louvers and increasing the ventilation area. In other possible implementations, the summer adjustment cavity can also be directly set inside the louvers, but such a louver structure is more complex, inconvenient to install, and has a higher implementation cost.

[0044] Among them, a porous hydrophobic material 5 is provided at the higher end of the summer regulation cavity 3.

[0045] This allows its hydrophobic properties to be used to better force the liquefied phase change material to flow towards the lower end.

[0046] Among them, an adjusting torsion spring 6 is also installed between the summer adjustment rotating rod 4 and the inner wall of the ventilation duct vent; the summer adjustment receiving cavity 3 has multiple parallel arrangements (only one is shown in the figure), and the phase change temperature of the summer adjustment phase change material in each summer adjustment receiving cavity is set from high to low.

[0047] This adjustment of the torsion spring's setting ensures that when the phase change material used for summer regulation liquefies upon cooling, causing a shift in the center of gravity of the regulating lever, it must overcome the torsion of the spring to rotate until the torque caused by the shift in center of gravity balances with the torsion spring's torque (without infinitely increasing the rotation to 90°). Furthermore, because the larger the rotation angle, the greater the torsion spring torque, this allows for balancing more rotation angles. Combined with multiple summer regulation cavities with different phase change temperatures, this creates a multi-level control effect. The lower the summer air outlet temperature (indicating a greater user demand for low ambient temperature), the larger the louver opening angle, the larger the ventilation area, and the better the ventilation effect, thus better matching the user's needs. Therefore, it significantly improves the user-friendly automatic control effect.

[0048] The louver structure also includes an automatic winter adjustment mechanism, which includes a winter adjustment cavity 7 that is initially horizontal. The bottom surface of the winter adjustment cavity 7 is inclined from one end to the other. The winter adjustment cavity and the summer adjustment cavity are parallel and their bottom surfaces are inclined in opposite directions. A liquid storage cavity 8 is also provided at the lowest end of the bottom surface of the winter adjustment cavity. The end of the liquid storage cavity 8 that is away from the direction of the winter adjustment cavity is connected to the winter adjustment cavity. The bottom surface of the winter adjustment cavity is also covered with water-absorbing material 9 and connected to the liquid storage cavity. The liquid storage cavity 8 contains a winter adjustment phase change material that is initially liquid. After the winter adjustment phase change material is vaporized, it can change the position of the center of gravity in the winter adjustment cavity and drive the louvers to rotate.

[0049] In this way, when the outlet air temperature exceeds the preset temperature during winter heating, the phase change material used for winter regulation begins to absorb heat and vaporize, preventing discomfort caused by excessively high outlet temperatures. Simultaneously, the vaporization of the phase change material changes the center of gravity within the winter regulation chamber, causing the louvers to rotate, increasing the ventilation area of ​​the air vents and ensuring that the heating effect matches the user's preferences. Therefore, it achieves a more user-friendly and automatic winter ventilation control effect. When the temperature drops again, the phase change material re-liquefies and, with the help of the water-absorbing material, re-enters the liquid storage chamber to restore balance. The liquid storage chamber design ensures that when the automatic adjustment mechanism rotates the louvers in summer, the phase change material for winter regulation remains within the liquid storage chamber, preventing a change in the center of gravity of the winter regulation chamber. This cleverly avoids interference between the winter and summer regulation chambers, ensuring that each functions independently.

[0050] The automatic winter adjustment mechanism includes a winter adjustment lever 10, which is rotatably installed on the inner wall of the ventilation duct vent 1. The louvers 2 and the winter adjustment lever 10 are fixedly installed, and the winter adjustment receiving cavity is located inside the winter adjustment lever.

[0051] In this way, controlling the rotation of the winter adjustment lever can drive the rotation of all louvers, resulting in a simple structure, easy implementation, and better effect on opening and closing the louvers and increasing the ventilation area. In other possible implementations, the winter adjustment cavity can also be directly set inside the louvers, but such a louver structure is more complex, inconvenient to install, and has a higher implementation cost.

[0052] Among them, the higher end of the winter regulation cavity 7 is provided with a porous hydrophobic material.

[0053] This allows its hydrophobic properties to be used to better force the liquefied phase change material to flow and reset towards one end of the storage cavity.

[0054] The winter regulation accommodating cavity 7 has multiple accommodating cavities arranged in parallel (only one is shown in the figure), and the phase change temperature of the winter regulation phase change material in each winter regulation accommodating cavity is set from high to low.

[0055] In this way, by using the adjusting torsion spring installed between the adjusting rod for summer and the inner wall of the ventilation duct outlet, a multi-level adjustment function can be achieved in winter.

[0056] Among them, the winter adjustment lever 10 and the summer adjustment lever 4 are each fixed at both ends of the louver 2 and form a rectangle.

[0057] This structure is simpler, more reliable, and more stable.

Claims

1. A ventilation duct vent structure, comprising a louver structure disposed at the ventilation duct vent, the louver structure comprising multiple rows of louvers arranged in parallel at intervals, the louver structure containing a phase change material, characterized in that, The louver structure is also equipped with an automatic summer adjustment mechanism, which includes a summer adjustment receiving cavity that is initially horizontal. The bottom surface of the summer adjustment receiving cavity is inclined from one end to the other. The summer adjustment receiving cavity is equipped with a summer adjustment phase change material that is initially gaseous. After the summer adjustment phase change material is liquefied, it can flow to the lower end of the summer adjustment receiving cavity to change the position of the center of gravity in the summer adjustment receiving cavity and drive the louver to rotate. The louver structure also includes an automatic winter adjustment mechanism, which includes a winter adjustment cavity that is initially horizontal. The bottom surface of the winter adjustment cavity is inclined from one end to the other. The winter adjustment cavity and the summer adjustment cavity are parallel to each other and their bottom surfaces are inclined in opposite directions. A liquid storage cavity is also provided at the lowest end of the bottom surface of the winter adjustment cavity. The end of the liquid storage cavity that is away from the direction of the winter adjustment cavity is connected to the winter adjustment cavity. The bottom surface of the winter adjustment cavity is also covered with water-absorbing material and connected to the liquid storage cavity. The liquid storage cavity contains a winter adjustment phase change material that is initially liquid. After the winter adjustment phase change material is vaporized, it can change the position of the center of gravity in the winter adjustment cavity and drive the louvers to rotate.

2. The ventilation duct outlet structure as described in claim 1, characterized in that, The summer automatic adjustment mechanism includes a summer adjustment lever, which is rotatably mounted on the inner wall of the ventilation duct vent. The louvers and the summer adjustment lever are fixedly installed, and the summer adjustment receiving cavity is located inside the summer adjustment lever.

3. The ventilation duct outlet structure as described in claim 2, characterized in that, A porous hydrophobic material is placed at the higher end of the summer regulation cavity.

4. The ventilation duct outlet structure as described in claim 2, characterized in that, An adjusting torsion spring is also installed between the summer regulating rod and the inner wall of the ventilation duct outlet; the summer regulating accommodating cavity has multiple accommodating cavities arranged in parallel, and the phase change temperature of the summer regulating phase change material in each summer regulating accommodating cavity is set from high to low.

5. The ventilation duct outlet structure as described in claim 1, characterized in that, The winter automatic adjustment mechanism includes a winter adjustment lever, which is rotatably mounted on the inner wall of the ventilation duct vent. The louvers and the winter adjustment lever are fixedly installed, and the winter adjustment receiving cavity is located inside the winter adjustment lever.

6. The ventilation duct outlet structure as described in claim 5, characterized in that, A porous hydrophobic material is placed at the higher end of the cavity used for winter regulation. The winter regulation cavities are arranged in parallel, and the phase change temperature of the winter regulation phase change material in each winter regulation cavity is set from high to low. The winter adjustment lever and the summer adjustment lever are each fixed to both ends of the louver and form a rectangle.

7. A ventilation duct vent structure, comprising a louver structure disposed at the ventilation duct vent, the louver structure comprising multiple rows of louvers arranged at intervals, the louver structure containing a phase change material, characterized in that, The louver structure also includes an automatic winter adjustment mechanism, which includes a winter adjustment cavity that is initially horizontal. The bottom surface of the winter adjustment cavity is inclined from one end to the other. The winter adjustment cavity and the summer adjustment cavity are parallel to each other and their bottom surfaces are inclined in opposite directions. A liquid storage cavity is also provided at the lowest end of the bottom surface of the winter adjustment cavity. The end of the liquid storage cavity that is away from the direction of the winter adjustment cavity is connected to the winter adjustment cavity. The bottom surface of the winter adjustment cavity is also covered with water-absorbing material and connected to the liquid storage cavity. The liquid storage cavity contains a winter adjustment phase change material that is initially liquid. After the winter adjustment phase change material is vaporized, it can change the position of the center of gravity in the winter adjustment cavity and drive the louvers to rotate.

8. The ventilation duct outlet structure as described in claim 7, characterized in that, The winter automatic adjustment mechanism includes a winter adjustment lever, which is rotatably mounted on the inner wall of the ventilation duct vent. The louvers and the winter adjustment lever are fixedly installed, and the winter adjustment receiving cavity is located inside the winter adjustment lever.

9. The ventilation duct outlet structure as described in claim 7, characterized in that, A porous hydrophobic material is placed at the higher end of the cavity used for winter regulation.

10. The ventilation duct outlet structure as described in claim 7, characterized in that, The winter regulation containment cavity has multiple cavities arranged in parallel, and the phase change temperature of the winter regulation phase change material in each winter regulation containment cavity is set from high to low.

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