Air pipe air supply and return device

Abstract

The utility model discloses an air pipe air supply and return device which is characterized by comprising a first air pipe module, a second air pipe module and an air cabinet, the air cabinet is connected with the first air pipe module; the first air pipe module is connected with the second air pipe module; the first air pipe module comprises an air return assembly and an air supply assembly, and the air return assembly is connected with the air supply assembly; the first air pipe module is used for controlling the flowing direction and speed of air; the second air pipe module comprises a square air pipe assembly and a circular air pipe assembly, and the square air pipe assembly is connected with the circular air pipe assembly; the second air pipe module further adjusts the flow direction and the size of air. According to the device, the flowing direction, speed and air volume of air can be controlled through the first air pipe module and the second air pipe module, the air supply volume and the air speed of each position in the environment are kept consistent, the temperature in the environment can be controlled, and the phenomenon that the temperature of all positions in the environment is not uniform is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical engineering, in particular to a circulating air device for temperature and humidity control equipment, and specifically to an air duct return air device. Background Art

[0002] In traditional air supply and return systems, air flow is typically unidirectional: air is blown out from a fixed supply vent, passes through the room, and then returns through one or more fixed return vents. While this design is simple, the single air flow path often results in uneven temperature and humidity distribution within the room, leading to differences in temperature and humidity across different areas of the room. This variation is particularly pronounced in industries with strict environmental requirements, such as precision manufacturing, pharmaceutical production, and food processing. In these industries, inconsistent temperature and humidity can impact production results and may even result in substandard product quality.

[0003] To address the issue of large temperature variations, traditional methods often use variable-frequency fans to adjust air volume, thereby more precisely controlling the temperature and humidity within the room. While adjusting the wind speed by varying the frequency of the variable-frequency motor allows for fine-grained control of air volume and improves the accuracy of temperature and humidity control to a certain extent, it also significantly increases costs. Utility Model Content

[0004] The purpose of the utility model is to provide a duct return air device with more uniform return air, more precise temperature and humidity control, and higher cost performance.

[0005] In order to solve the above technical problems, the utility model provides an air duct supply and return air device, including an air duct supply and return air device, comprising a first air duct module, a second air duct module and an air cabinet;

[0006] The wind cabinet is connected to the first air duct module; the first air duct module is connected to the second air duct module;

[0007] The first air duct module includes a return air component and an air supply component, and the return air component is connected to the air supply component; the first air duct module is used to control the wind direction and wind speed;

[0008] The second air duct module includes a square air duct assembly and a circular air duct assembly, and the square air duct assembly is connected to the circular air duct assembly; the second air duct module further controls the air volume and wind direction.

[0009] Furthermore, the return air assembly includes a supply and return air switching valve, a bypass air valve, a defrost air valve, an air duct check valve and an air duct; the supply and return air switching valve, the bypass air valve, the defrost air valve and the air duct check valve are all connected to the air duct.

[0010] Furthermore, the air duct includes a five-way air duct, an A-type three-way air duct, a special-shaped air duct, a straight air duct and an elbow air duct; the first air outlet of the five-way air duct is connected to an air outlet of the special-shaped air duct, and the other air outlet of the special-shaped air duct is connected to the first air outlet of the A-type three-way air duct through a straight air duct, and the second air outlet and the third air outlet of the A-type three-way air duct are both commonly connected to the straight air duct and the elbow air duct respectively with the supply and return air switching valve, and the supply and return air switching valve is connected to the second air duct module through a straight air duct; the second air outlet of the five-way air duct is connected to the air supply assembly through the defrost air valve; the third air outlet of the five-way air duct is connected to the bypass air valve, and the bypass air valve is connected to the wind cabinet through the straight air duct and the elbow air duct; the fourth air outlet of the five-way air duct is connected to the air duct check valve, and the fifth air outlet of the five-way air duct is connected to the wind cabinet.

[0011] Furthermore, the air supply assembly includes a supply-return air switching valve and an air duct; the supply-return air switching valve is connected to the air duct.

[0012] Furthermore, the air duct includes a type A three-way air duct, a type B three-way air duct, a straight air duct and an elbow air duct; the first air outlet of the type B three-way air duct is connected to the defrost air valve; the second air outlet of the type B three-way air duct is connected to the wind cabinet through the straight air duct; the third air outlet of the type B three-way air duct is connected to the first air outlet of the type A three-way air duct through the straight air duct; the second air outlet and the thirteenth air outlet of the type A three-way air duct are both connected to the straight air duct and the elbow air duct respectively, and the supply and return air switching valve is connected to the second air duct module.

[0013] Furthermore, the square air duct assembly includes a straight three-way air duct, a straight air duct, a straight duct plug and a bracket; multiple straight air ducts are connected through the bracket, one of the straight air ducts at one end is connected to the straight duct plug, and one of the straight air ducts at the other end is connected to the first air outlet of the straight three-way air duct, and the second air outlet and the third air outlet of the straight three-way air duct are both connected to multiple supply and return air switching valves through the straight air duct.

[0014] Furthermore, the circular air duct assembly includes a long circular tube, a circular tube plug and a sealing plate; the straight three-way air duct and the straight air duct are both provided with circular holes; the circular tube plug is installed at one end of the long circular tube, and the other end of the long circular tube is connected to the straight three-way air duct and the straight air duct through the circular hole; the long circular tube is also provided with multiple air outlets, and the sealing plate is arranged below the air outlets.

[0015] Furthermore, the second air duct module also includes a cavity, and the square air duct assembly and the circular air duct assembly are both located in the cavity; the straight air duct is connected to the cavity through the bracket.

[0016] Furthermore, the cavity is provided with an opening, and the first air duct module is connected to the second air duct module through the opening.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] The first air duct module of the present invention accurately controls the temperature in the environment by controlling the flow direction and speed of the wind, thereby effectively reducing the uneven temperature in the environment; the second air duct module further adjusts the flow direction, size and speed of the wind, so that the air supply volume and wind speed at each location in the environment can be kept consistent at a low cost.

[0019] Furthermore, the first air duct module can accurately control the humidity of the wind under the action of the evaporator of the wind cabinet, thereby controlling the change of humidity in the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of an air duct supply and return air device in one embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of an air duct supply and return air device in one embodiment of the present invention with the cavity removed;

[0022] Figure 3 This is a schematic diagram of a first air duct module of an air duct supply and return air device in one embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the return air assembly of the first air duct module in one embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the air supply assembly of the first air duct module in one embodiment of the present utility model;

[0025] Figure 6 This is a schematic diagram of the second air duct module of the air duct supply and return air device in one embodiment of the present invention.

[0026] Figure numbers: 1. Air cabinet; 2. Supply and return air switching valve; 3. Bypass air valve; 4. Defrost air valve; 5. Duct check valve; 6. Five-way air duct; 7. Type A three-way air duct; 8. Type B three-way air duct; 9. Special-shaped air duct; 10. Straight air duct; 11. Elbow air duct; 12. Straight three-way air duct; 13. Straight pipe plug; 14. Bracket; 15. Long round pipe; 16. Round pipe plug; 17. Closing plate; 18. Cavity. DETAILED DESCRIPTION

[0027] The following is a more detailed description of an air duct supply and return air device of the present invention, with reference to a schematic diagram. This diagram illustrates a preferred embodiment of the present invention. It should be understood that those skilled in the art may modify the present invention described herein while still achieving the beneficial effects of the present invention. Therefore, the following description should be understood as a general guide for those skilled in the art and not as a limitation of the present invention.

[0028] The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are greatly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention.

[0029] like Figures 1 to 6 As shown, an embodiment of the present invention proposes a duct supply and return air device, including a first duct module, a second duct module and a wind cabinet 1; the wind cabinet 1 is connected to the first duct module; the first duct module is connected to the second duct module.

[0030] Specifically, such as Figure 3 As shown, the first air duct module is used to control the flow direction and speed of the air, and includes a return air component and an air supply component, and the return air component is connected to the air supply component.

[0031] In this embodiment, if Figure 4 As shown, the return air assembly includes a supply and return air switching valve 2, a bypass air valve 3, a defrost air valve 4, an air duct check valve 5 and an air duct, and the supply and return air switching valve 2, the bypass air valve 3, the defrost air valve 4 and the air duct check valve 5 are all connected to the air duct. The supply and return air switching valve 2 can adjust the direction of air flow, switching the air from the supply air state to the return air state, or from the return air state to the supply air state. By controlling the opening of the bypass air valve 3, the amount of air supplied or discharged can be adjusted, thereby adjusting the cooling capacity and dehumidification effect. The defrost air valve 4 can prevent or reduce frosting by adjusting the air flow. The air duct check valve 5 allows air to flow in only one direction, thereby preventing air from flowing back from the supply air area to the return air area or from the return air area to the supply air area.

[0032] In a specific embodiment, the air duct includes a five-way air duct 6 , an A-type three-way air duct 7 , a special-shaped air duct 9 , a straight air duct 10 and an elbow air duct 11 . The first air outlet of the five-way air duct 6 is connected to an air outlet of the special-shaped air duct 9, and the other air outlet of the special-shaped air duct 9 is connected to the first air outlet of the A-type three-way air duct 7 through the straight air duct 10. The second air outlet and the third air outlet of the A-type three-way air duct 7 are both connected to the supply and return air switching valve 2 respectively through the straight air duct 10 and the elbow air duct 11, and the supply and return air switching valve 2 is connected to the second air duct module through the straight air duct 10; the second air outlet of the five-way air duct 6 is connected to the air supply assembly through the defrost air valve 4; the third air outlet of the five-way air duct 6 is connected to the bypass air valve 3, and the bypass air valve 3 is connected to the air cabinet 1 through the straight air duct 10 and the elbow air duct 11; the fourth air outlet of the five-way air duct 6 is connected to the air duct check valve 5, and the fifth air outlet of the five-way air duct 6 is connected to the air cabinet 1.

[0033] In this embodiment, the air supply assembly includes a supply-return air switching valve 2 and an air duct. The supply-return air switching valve 2 is connected to the air duct so as to adjust the direction of air flow.

[0034] In a specific embodiment, Figure 5 As shown, the air duct includes an A-type three-way air duct 7, a B-type three-way air duct 8, a straight air duct 10, and an elbow air duct 11. The first air outlet of the B-type three-way air duct 8 is connected to the defrost air valve 4; the second air outlet of the B-type three-way air duct 8 is connected to the air cabinet 1 via the straight air duct 10; the third air outlet of the B-type three-way air duct 8 is connected to the first air outlet of the A-type three-way air duct 7 via the straight air duct 10; the second and thirteenth air outlets of the A-type three-way air duct 7 both use the straight air duct 10 and the elbow air duct 11, and are respectively connected to the supply / return air switching valve 2; the supply / return air switching valve 2 is connected to the second air duct module.

[0035] In this embodiment, the second air duct module further adjusts the direction and size of the air flow and includes a square air duct assembly and a circular air duct assembly, wherein the square air duct assembly is connected to the circular air duct assembly. Air is transmitted from the square air duct assembly to the circular air duct assembly, and the circular air duct assembly evenly transports the air.

[0036] In a specific embodiment, Figure 6As shown, the square air duct assembly includes a straight three-way air duct 12, a straight air duct 10, a straight duct plug 13, and a bracket 14. Multiple straight air ducts 10 are connected via the bracket 14 and are connected to the cavity 18 via the bracket 14. Of the multiple interconnected straight air ducts 10, one straight air duct 10 at one end is connected to the straight duct plug 13, and one straight air duct 10 at the other end is connected to the first air outlet of the straight three-way air duct 12. The second and third air outlets of the straight three-way air duct 12 are both connected to the multiple supply and return air switching valves 2 via the straight air duct 10.

[0037] The circular air duct assembly includes an elongated circular tube 15, a circular tube plug 16 and a sealing plate 17. The straight three-way air duct 12 and the straight air duct 10 are both provided with circular holes, and the wind can enter the environment from the circular holes. The circular tube plug 16 is installed at one end of the elongated circular tube 15, and the other end of the elongated circular tube 15 is connected to the straight three-way air duct 12 and the straight air duct 10 through the circular hole; the elongated circular tube 15 is also provided with a plurality of air outlets, and the sealing plate 17 is provided below the air outlet. The circular tube plug 16 closes the end of the elongated circular tube 15 to prevent air from leaking from the end and ensure that the air flows in accordance with the designed path. The sealing plate 17 can adjust the air volume by adjusting the size of the air outlet and plays a role in guiding the flow.

[0038] In this embodiment, the second air duct module further includes a cavity 18, which is used to provide a space for air flow. The square air duct assembly and the circular air duct assembly are both located within the cavity 18, and the cavity 18 is provided with an opening, through which the first air duct module is connected to the second air duct module.

[0039] The device of the present invention includes a number of different types of air ducts, which are interconnected to form an efficient air supply and return device, and can adjust the air flow direction and distribution according to actual needs to meet specific application scenarios and environmental requirements. It is responsible for guiding the air to different directions, thereby achieving precise control of air flow. Moreover, through the supply and return air switching valve 2, when the air duct on the left is supplying air, the air duct on the right is returning air; or when the air duct on the right is supplying air, the air duct on the left is returning air. By switching back and forth regularly, the indoor air can be kept fresh. At the same time, by setting the sealing plate 17, the air volume can be adjusted as needed to ensure that the wind speed and air volume in every corner of the environment are uniform.

[0040] When the left duct is delivering air, air enters the second duct module from the air supply assembly, enters and flows out through the air port. Ambient air enters the second duct module from the air port, and enters the return air assembly through the straight three-way air duct 12. During this process, the air supply volume can be controlled by adjusting the opening of the bypass air valve 3, thereby more accurately controlling the air volume.

[0041] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. An air duct return air device, characterized in that: It includes a first air duct module, a second air duct module and an air cabinet; The wind cabinet is connected to the first air duct module, and the first air duct module is connected to the second air duct module; The first air duct module includes a return air component and an air supply component, and the return air component is connected to the air supply component; the first air duct module is used to control the flow direction and speed of the air; The second air duct module includes a square air duct assembly and a circular air duct assembly, and the square air duct assembly is connected to the circular air duct assembly; the second air duct module further adjusts the flow direction and size of the air.

2. The air duct return air device according to claim 1, characterized in that: The return air assembly includes a supply and return air switching valve, a bypass air valve, a defrost air valve, an air duct check valve and an air duct; the supply and return air switching valve, the bypass air valve, the defrost air valve and the air duct check valve are all connected to the air duct.

3. The air duct return air device according to claim 2, characterized in that: The air duct includes a five-way air duct, an A-type three-way air duct, a special-shaped air duct, a straight air duct and an elbow air duct; the first air outlet of the five-way air duct is connected to an air outlet of the special-shaped air duct, and the other air outlet of the special-shaped air duct is connected to the first air outlet of the A-type three-way air duct through a straight air duct, and the second air outlet and the third air outlet of the A-type three-way air duct are both commonly connected to the straight air duct and the elbow air duct respectively with the supply and return air switching valve, and the supply and return air switching valve is connected to the second air duct module through a straight air duct; the second air outlet of the five-way air duct is connected to the air supply assembly through the defrost air valve; the third air outlet of the five-way air duct is connected to the bypass air valve, and the bypass air valve is connected to the air cabinet through the straight air duct and the elbow air duct; the fourth air outlet of the five-way air duct is connected to the air duct check valve, and the fifth air outlet of the five-way air duct is connected to the air cabinet.

4. The air duct return air device according to claim 1, characterized in that: The air supply assembly includes a supply and return air switching valve and an air duct; the supply and return air switching valve is connected to the air duct.

5. The air duct return air device according to claim 4, characterized in that: The air duct includes a type A three-way air duct, a type B three-way air duct, a straight air duct and an elbow air duct; the first air outlet of the type B three-way air duct is connected to the defrost air valve; the second air outlet of the type B three-way air duct is connected to the wind cabinet through the straight air duct; the third air outlet of the type B three-way air duct is connected to the first air outlet of the type A three-way air duct through the straight air duct; the second air outlet and the thirteenth air outlet of the type A three-way air duct are both connected to the straight air duct and the elbow air duct respectively; the supply and return air switching valve is also connected to the second air duct module.

6. The air duct return air device according to claim 1, characterized in that: The square air duct assembly includes a straight three-way air duct, a straight air duct, a straight duct plug and a bracket; multiple straight air ducts are connected through the bracket, one of the straight air ducts at one end is connected to the straight duct plug, and one of the straight air ducts at the other end is connected to the first air outlet of the straight three-way air duct, and the second air outlet and the third air outlet of the straight three-way air duct are both connected to multiple supply and return air switching valves through the straight air duct.

7. The air duct return air device according to claim 6, characterized in that: The circular air duct assembly includes an elongated circular tube, a circular tube plug and a sealing plate; the straight three-way air duct and the straight air duct are both provided with circular holes; the circular tube plug is installed at one end of the elongated circular tube, and the other end of the elongated circular tube is connected to the straight three-way air duct and the straight air duct through the circular hole; the elongated circular tube is also provided with multiple air outlets, and the sealing plate is arranged below the air outlets.

8. The air duct return air device according to claim 7, characterized in that: The second air duct module further includes a cavity, and the square air duct assembly and the circular air duct assembly are both located in the cavity; the straight air duct is connected to the cavity via the bracket.

9. The air duct return air device according to claim 8, characterized in that: The cavity is provided with an opening, and the first air duct module is connected to the second air duct module through the opening.

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