A central air conditioning leak-proof structure

Abstract

This utility model discloses a central air conditioning leak-proof structure, relating to the field of air conditioning insulation and leak prevention. The utility model includes a pipe with a conical cylinder installed on one side inside. One end of the conical cylinder is connected to a ventilation pipe, and the ventilation pipe has a rotating shaft connected inside via a sealed bearing. This utility model incorporates a motor, a worm gear, a worm wheel, a rotating shaft, and a sealing disc. When the sealing disc needs to be opened or closed, the motor can be started via an external control system. The motor drives the worm gear to rotate, which in turn drives the worm wheel to rotate, which in turn drives the rotating shaft to rotate. The rotating shaft then drives the sealing disc to rotate, thereby adjusting the opening and closing of the ventilation pipe. This avoids the vibration caused by air pressure fluctuations when using springs and ball bearings for sealing. This method allows for precise adjustment of the sealing disc's opening and closing angle (e.g., partially open or completely closed), unaffected by air pressure fluctuations, thus improving sealing performance.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning insulation and leak prevention, specifically a central air conditioning leak-proof structure. Background Technology

[0002] Central air conditioning consists of one or more cold and heat source systems and multiple air conditioning systems. Unlike traditional refrigerant-based air conditioners that centrally process air to achieve comfort requirements, this system uses the principle of liquid vaporization refrigeration to provide the required cooling capacity to offset the heat load of the indoor environment. The heating system provides the required heat to offset the cooling and heating loads of the indoor environment. If the pipe insulation is not done properly, the supply air temperature may be too low in summer, leading to frost. If the frost is severe, water leakage may occur.

[0003] According to Chinese Patent No. CN213713472U, a central air conditioning insulation and leak-proof structure is disclosed. This utility model seals the air in the pipe with a top bead to prevent backflow, thereby insulating the pipe. Water droplets inside the pipe are discharged through the drain hole to prevent water droplets from flowing out of the pipe.

[0004] Regarding the aforementioned patent content, the ventilation duct is sealed by the fit between the top ball and the conical cylinder. During ventilation, the top ball is displaced by the wind force and compresses the spring, so that the top ball no longer blocks the ventilation duct, thus allowing ventilation. When ventilation is not needed, the top ball simply returns to its original position to block the ventilation duct. However, the sealing performance depends on the stability of the spring force. When the top ball is in the open or closed state, it is greatly affected by air pressure fluctuations. If the air supply pressure is unstable (such as a sudden change in air volume), the top ball may shake. When the top ball shakes, it may randomly block the air vent, thereby affecting the flow efficiency of gas in the ventilation duct. At the same time, even when the top ball is in the blocked state, the elasticity of the spring may cause the seal to be incomplete, thus reducing the reliability of the seal. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a central air conditioning leak-proof structure to solve the technical problem of poor stability of sealing ventilation pipes by means of top beads and springs.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a central air conditioning leak-proof structure, comprising a pipe, a cone installed on one side of the inside of the pipe, a ventilation pipe connected to one end of the cone, and a rotating shaft connected inside the ventilation pipe via a sealed bearing, a sealing disc installed on the outer wall of the rotating shaft, and a sealing ring provided on the outer wall of the sealing disc, one end of the rotating shaft extending to the outside of the ventilation pipe and equipped with a worm gear, a fixing plate installed inside the pipe, and a motor installed on the fixing plate, the output end of the motor being connected to a worm gear.

[0007] By adopting the above technical solution, when the sealing disc needs to be rotated, the motor can be started. The motor can drive the worm gear to rotate, and the rotation of the worm gear will drive the worm wheel to rotate.

[0008] Furthermore, the outer wall of the ventilation duct is provided with an insulation pipe, and the insulation pipe is an insulation rock wool pipe.

[0009] By adopting the above technical solution, the installation of insulation pipes can reduce heat exchange between ventilation pipes and the external environment, thereby reducing the risk of condensation.

[0010] Furthermore, one end of the rotating shaft passes through the insulation pipe, and a sealing ring is installed on the outer wall of the rotating shaft, with the outer wall of the sealing ring fitting against the insulation pipe.

[0011] By adopting the above technical solution, the sealing ring can improve the sealing performance between the rotating shaft and the insulation pipe.

[0012] Furthermore, flanges are installed at both ends of the pipe.

[0013] By adopting the above technical solution, the flange installation facilitates the installation of pipelines.

[0014] Furthermore, the outer wall of the cone is provided with multiple drainage holes, one end of the pipe is provided with an air outlet, and the other end of the pipe is provided with an air inlet.

[0015] By adopting the above technical solution, when the air at the air outlet generates water vapor due to temperature difference, the water vapor condenses into water droplets inside the cone. The condensed water droplets flow into the lower part of the pipe through the drain hole opened on the side wall of the cone, and finally the water droplets are discharged through the drain pipe.

[0016] Furthermore, a drain pipe is connected to one side of the bottom of the pipe.

[0017] By adopting the above technical solution, water inside the pipe can flow out through the drain pipe, preventing water accumulation inside the pipe.

[0018] Furthermore, the sealing ring is made of silicone rubber, and the outer wall of the sealing ring and the outer wall of the sealing disc are both in contact with the inner wall of the ventilation pipe.

[0019] By adopting the above technical solution, the sealing ring can improve the sealing performance between the sealing plate and the ventilation pipe, preventing external hot air from flowing deep into the ventilation pipe through the gap between the sealing plate and the ventilation pipe.

[0020] Furthermore, the worm gear meshes with the worm.

[0021] By adopting the above technical solution, when the worm rotates, it will drive the worm wheel to rotate, and the rotation of the worm wheel will drive the shaft to rotate.

[0022] Furthermore, the worm is made of carburized and quenched alloy steel and plated with hard chrome, while the worm wheel is made of aluminum bronze.

[0023] By adopting the above technical solutions, the service life of the worm and worm wheel can be improved.

[0024] Furthermore, the sealing disc is rotatably connected to the ventilation pipe via a rotating shaft.

[0025] By adopting the above technical solution, the sealing disc can rotate around the rotating shaft, thereby allowing the sealing disc to open or close.

[0026] In summary, the present invention has the following main advantages:

[0027] 1. This utility model, by incorporating a motor, worm gear, worm wheel, rotating shaft, and sealing disc, allows for the opening and closing of the sealing disc via an external control system. The motor drives the worm gear to rotate, which in turn drives the worm wheel to rotate, which in turn drives the rotating shaft to rotate. This, in turn, drives the sealing disc to rotate, thereby achieving the opening and closing adjustment of the ventilation duct. This avoids the vibration caused by air pressure fluctuations when using springs and ball bearings for sealing. This method allows for precise adjustment of the sealing disc's opening and closing angle (e.g., partially open or completely closed), unaffected by air pressure fluctuations, thus improving sealing performance. Furthermore, the worm gear and worm wheel have self-locking properties, enhancing the stability of the sealing disc and preventing it from rotating arbitrarily due to gas blowing after opening. This also prevents the sealing disc from obstructing the ventilation duct after opening, allowing airflow to pass smoothly through the ventilation duct.

[0028] 2. This utility model features a sealing ring made of silicone rubber, which improves the sealing performance between the sealing disc and the inner wall of the ventilation duct, reducing condensation caused by the exchange of hot and cold air. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0030] Figure 2 This is a schematic diagram of the overall orthographic structure of this utility model;

[0031] Figure 3 This is a schematic diagram of the side structure of the pipe of this utility model;

[0032] Figure 4 This is a schematic diagram of the side sectional structure of the pipe of this utility model;

[0033] Figure 5 This is a schematic diagram of the ventilation duct structure of this utility model;

[0034] Figure 6This is a schematic diagram of the side structure of the sealing disc of this utility model.

[0035] Figure 7 This is a schematic diagram of the conical cylinder structure of this utility model.

[0036] In the diagram: 1. Pipe; 2. Flange; 3. Air inlet; 4. Air outlet; 5. Cone; 6. Ventilation duct; 7. Insulation pipe; 8. Drain hole; 9. Drain pipe; 10. Sealing plate; 11. Sealing ring; 12. Shaft; 13. Fixing plate; 14. Motor; 15. Worm gear; 16. Worm wheel; 17. Sealing ring. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] The embodiments of this utility model will be described below based on its overall structure.

[0039] Example 1:

[0040] A central air conditioning system with leak-proof structure, such as Figures 1-7 As shown, the system includes a pipe 1, a cone 5 installed on one side of the inside of the pipe 1, a ventilation pipe 6 connected to one end of the cone 5, and a rotating shaft 12 connected inside the ventilation pipe 6 via a sealed bearing. A sealing disc 10 is installed on the outer wall of the rotating shaft 12, and a sealing ring 11 is provided on the outer wall of the sealing disc 10. One end of the rotating shaft 12 extends to the outside of the ventilation pipe 6 and is equipped with a worm gear 16. A fixing plate 13 is installed inside the pipe 1, and a motor 14 is installed on the fixing plate 13. A worm gear 15 is connected to the output end of the motor 14. When the sealing disc 10 needs to be rotated, the motor 14 can be started. The operation of the motor 14 can drive the worm gear 15 to rotate, and the rotation of the worm gear 15 drives the worm gear 16 to rotate. The motor 14 is electrically connected to the control system of the central air conditioning system.

[0041] Specifically, the sealing ring 11 is made of silicone rubber. The outer wall of the sealing ring 11 and the outer wall of the sealing disc 10 are both in contact with the inner wall of the ventilation pipe 6. The sealing ring 11 can improve the sealing between the sealing disc 10 and the ventilation pipe 6, preventing external hot air from flowing into the depth of the ventilation pipe 6 through the gap between the sealing disc 10 and the ventilation pipe 6. The worm gear 16 meshes with the worm 15. When the worm 15 rotates, it will drive the worm gear 16 to rotate. The rotation of the worm gear 16 will drive the rotating shaft 12 to rotate. The sealing disc 10 is rotatably connected to the ventilation pipe 6 through the rotating shaft 12. The sealing disc 10 can rotate around the rotating shaft 12, thereby allowing the sealing disc 10 to open or close.

[0042] See Figures 1-5Both ends of the pipe 1 are equipped with flanges 2, which facilitates the installation of the pipe 1. The outer wall of the cone 5 has multiple drainage holes 8. One end of the pipe 1 has an air outlet 4, and the other end of the pipe 1 has an air inlet 3. When the air at the air outlet 4 generates water vapor due to temperature difference, the water vapor condenses into water droplets inside the cone 5. The condensed water droplets flow through the drainage holes 8 on the side wall of the cone 5 to the lower part of the pipe 1, and finally are discharged through the drain pipe 9. The bottom side of the pipe 1 is connected to the drain pipe 9 so that the water inside the pipe 1 can flow out through the drain pipe 9 to prevent water accumulation inside the pipe 1.

[0043] Example 2:

[0044] Based on the above embodiment one,

[0045] Specifically, the outer wall of the ventilation duct 6 is provided with an insulation pipe 7, which is an insulation rock wool pipe. The insulation pipe 7 can reduce the heat exchange between the ventilation duct 6 and the external environment and reduce the risk of condensation. One end of the rotating shaft 12 passes through the insulation pipe 7. A sealing ring 17 is also installed on the outer wall of the rotating shaft 12, and the outer wall of the sealing ring 17 fits against the insulation pipe 7. The sealing ring 17 is made of silicone rubber material. The sealing ring 17 can improve the sealing between the rotating shaft 12 and the insulation pipe 7.

[0046] Example 3:

[0047] Based on the above embodiment one, in order to improve the service life of the worm 15 and the worm wheel 16, the materials of the worm 15 and the worm wheel 16 will be selected as follows.

[0048] See Figures 4-6 The worm 15 is made of carburized and quenched alloy steel (hard chrome plated), while the worm wheel 16 is made of aluminum bronze to improve the service life of the worm 15 and the worm wheel 16.

[0049] The working principle of this utility model is as follows: First, the flanges 2 at both ends of the pipe 1 are used to fix and connect with other pipes of the central air conditioning system to ensure the sealing of the overall ventilation path. When the air conditioner starts and needs to supply air, the motor 14 starts after receiving the control system signal. The motor 14 drives the worm gear 15 to rotate. Since the worm gear 15 meshes with the worm wheel 16 at the end of the rotating shaft 12, the rotation of the worm gear 15 drives the worm wheel 16 to rotate synchronously. Then, the rotating shaft 12 drives the sealing plate 10 to rotate in the ventilation pipe 6, so that the ventilation pipe 6 channel is opened. The air treated by the central air conditioning enters from the air inlet 3 of the pipe 1, flows through the ventilation pipe 6 and the cone 5 in sequence, and is finally sent into the room from the air outlet 4.

[0050] When the air conditioner stops working, the motor 14 drives the worm gear 15 to rotate in the opposite direction. Through the worm gear 15 and worm wheel 16, the rotating shaft 12 rotates in the opposite direction. The sealing plate 10 is reset and fits against the inner wall of the ventilation pipe 6. At this time, the silicone rubber sealing ring 11 on the outer wall of the sealing plate 10 fits tightly against the inner wall of the ventilation pipe 6, blocking external hot air from entering the pipe 1 through the gaps in the ventilation pipe 6, reducing the risk of condensation caused by the mixing of hot and cold air.

[0051] The outer wall of the ventilation duct 6 is wrapped with an insulation pipe 7 (using insulation rock wool pipe), which reduces the heat exchange between the cold air (or hot air) inside the ventilation duct and the external environment, reduces the possibility of condensation on the outer wall of the ventilation duct 6 due to temperature difference, and reduces the risk of water leakage from the source.

[0052] When the air at the outlet 4 produces water vapor due to the temperature difference between hot and cold, the water vapor condenses on the inner wall of the cone 5 to form water droplets. The cone-shaped structure of the cone 5 can guide the water droplets to flow towards the drain hole 8. The condensed water droplets flow into the lower area inside the pipe 1 through the drain hole 8. The drain pipe 9 connected to the bottom side of the pipe 1 directs the collected water droplets to the outside of the pipe 1, preventing water droplets from accumulating inside the pipe 1 and leaking from the interface or gap.

[0053] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A central air conditioner water leakage prevention structure comprising a pipe (1), characterized in that: A cone (5) is installed on one side of the inside of the pipe (1). One end of the cone (5) is connected to a ventilation pipe (6). The inside of the ventilation pipe (6) is connected to a rotating shaft (12) through a sealed bearing. A sealing disc (10) is installed on the outer wall of the rotating shaft (12). A sealing ring (11) is provided on the outer wall of the sealing disc (10). One end of the rotating shaft (12) extends to the outside of the ventilation pipe (6) and is equipped with a worm gear (16). A fixing plate (13) is installed inside the pipe (1). A motor (14) is installed on the fixing plate (13). The output end of the motor (14) is connected to a worm (15).

2. The water leakage prevention structure for a central air conditioner according to claim 1, characterized in that: The outer wall of the ventilation pipe (6) is provided with an insulation pipe (7), and the insulation pipe (7) is an insulation rock wool pipe.

3. The water leakage prevention structure for a central air conditioner according to claim 1, characterized in that: One end of the rotating shaft (12) passes through the insulation pipe (7), and a sealing ring (17) is also installed on the outer wall of the rotating shaft (12), and the outer wall of the sealing ring (17) is in contact with the insulation pipe (7).

4. The water leakage prevention structure for a central air conditioner according to claim 1, characterized in that: Flanges (2) are installed at both ends of the pipe (1).

5. The water leakage prevention structure for a central air conditioner according to claim 1, characterized in that: The outer wall of the cone (5) is provided with multiple drainage holes (8), one end of the pipe (1) is provided with an air outlet (4), and the other end of the pipe (1) is provided with an air inlet (3).

6. The water leakage prevention structure for a central air conditioner according to claim 1, characterized in that: A drain pipe (9) is connected to one side of the bottom of the pipe (1).

7. The water leakage prevention structure for a central air conditioner according to claim 1, characterized in that: The sealing ring (11) is made of silicone rubber material, and the outer wall of the sealing ring (11) and the outer wall of the sealing disc (10) are both in contact with the inner wall of the ventilation pipe (6).

8. The water leakage prevention structure for a central air conditioner according to claim 1, characterized in that: The worm gear (16) meshes with the worm (15).

9. The water leakage prevention structure for a central air conditioner according to claim 1, characterized in that: The worm (15) is made of carburized and quenched alloy steel and plated with hard chrome, while the worm wheel (16) is made of aluminum bronze.

10. The water leakage prevention structure for a central air conditioner according to claim 1, characterized in that: The sealing disc (10) is rotatably connected to the ventilation pipe (6) via a rotating shaft (12).

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