Fresh air machine with constant air volume

Abstract

The utility model discloses a fresh air machine with constant air volume, which relates to the technical field of fans and comprises a machine body, a support plate is arranged at the lower end of the machine body, an air outlet pipe is arranged at one end of the machine body, an adjusting pipe is fixedly arranged at one end of the air outlet pipe, and a mounting seat is fixedly arranged on the upper side of the outer surface of the adjusting pipe. The constant-air-volume fresh air ventilator comprises a mounting base, an adjusting box is detachably arranged at the upper end of the mounting base, a worm is rotationally arranged between the inner walls of the two sides of the adjusting box, a motor is arranged at one end of the adjusting box, the output end of the motor penetrates through the adjusting box and is fixedly connected with the worm, and the outer surface of the worm is connected with a worm gear in a meshed mode. The air volume can be accurately adjusted, more appropriate fresh air volume can be provided for different use scenes such as rooms with different areas and different air quality requirements, and energy waste is avoided while the indoor air quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a constant air volume fresh air fan. Background Art

[0002] A fan is a machine that relies on the input mechanical energy to increase the gas pressure and pump the gas. It converts the mechanical energy of the prime mover into the pressure energy and kinetic energy of the gas, thereby realizing functions such as gas transportation, ventilation, cooling, and heating. A constant air volume fresh air fan is a fresh air device that can maintain a constant air supply volume during operation. It overcomes the influence of factors such as changes in duct resistance through specific technical means and continuously and stably provides a fixed amount of fresh air to the room.

[0003] However, the following problems still exist in the prior art:

[0004] For the constant air volume fresh air fans in the prior art, most of them have low adjustment accuracy. Some existing fresh air fans may adopt relatively simple mechanical adjustment methods, such as adjusting the air volume by sliding baffles or changing the cross-sectional area of the air duct. This method is difficult to achieve fine adjustment of the air volume and cannot meet the precise control of the fresh air volume under different room areas and different air quality requirements. In small-area rooms, there may be problems such as excessive air volume leading to energy waste and increased noise; while in large-area rooms, there may be insufficient air volume and thus unable to effectively improve the indoor air quality.

[0005] In view of the above problems, the inventor proposes a constant air volume fresh air fan to solve the above problems. Content of the Utility Model

[0006] In order to solve the problem of low adjustment accuracy; the purpose of the utility model is to provide a constant air volume fresh air fan.

[0007] To solve the above technical problems, the utility model adopts the following technical scheme: A constant air volume fresh air fan includes a machine body. A support plate is provided at the lower end of the machine body. An air outlet pipe is provided at one end of the machine body. One end of the air outlet pipe is fixedly provided with an adjustment pipe. A air volume sensor can be arranged between the adjustment pipe and the air outlet pipe to convert the air flow information in the air duct into recognizable electrical signals or other forms of signals for monitoring, controlling, and adjusting the air volume. The air volume sensor is a mature prior art and will not be elaborated here. An installation seat is fixedly provided on the upper side of the outer surface of the adjustment pipe. An adjustment box is detachably provided at the upper end of the installation seat. A worm is rotatably arranged between the inner walls on both sides of the adjustment box. A motor is provided at one end of the adjustment box. The motor is welded to the outer surface of the adjustment box. The output end of the motor penetrates through the adjustment box and is fixedly connected to the worm. A worm gear is meshed with the outer surface of the worm. A rotating column is provided through the upper end of the worm gear. A connecting column is provided at the lower end of the rotating column. The lower end of the connecting column penetrates through the adjustment pipe and is fixedly provided with a wind baffle.

[0008] Preferably, one end of the adjusting pipe is provided with a first installation pipe, a second installation pipe and a third installation pipe. The adjusting pipe and each installation pipe have exactly the same shape, and are both composed of a straight pipe and a funnel-shaped pipe. Threaded sleeves are fixedly provided at one ends of the first installation pipe and the second installation pipe. Threaded pipes are fixedly provided at one ends of the first installation pipe, the second installation pipe and the third installation pipe, and the adjacent threaded sleeves and threaded pipes are used in cooperation.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0010] 1. The present utility model drives the windshield to rotate through worm and worm gear transmission, and can realize precise adjustment of the air volume. The worm and worm gear transmission has the characteristics of large transmission ratio and stable transmission, and can realize fine adjustment of the angle of the windshield, so as to precisely control the air volume. For different usage scenarios, such as rooms with different areas and different air quality requirements, it can provide a more appropriate fresh air volume, improve the indoor air quality and avoid energy waste at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0012] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0013] Figure 2 It is a schematic cross-sectional structure diagram of the adjusting pipe and the adjusting box of the present utility model.

[0014] Figure 3 It is an exploded view of the connection structure between the adjusting box and the mounting seat of the present utility model.

[0015] Figure 4 It is an exploded view of the cross-sectional structure of multiple installation pipes of the present utility model.

[0016] In the figure: 1. Body; 11. Air outlet pipe; 2. Support plate; 21. Anti-slip pad; 3. Adjusting pipe; 31. Mounting seat; 32. Adjusting box; 321. Connecting plate; 322. Connecting block; 323. Clamping plate; 324. Card slot; 33. Worm; 34. Motor; 35. Rotating column; 36. Worm gear; 37. Connecting column; 371. Cross slot; 372. Cross block; 38. Windshield; 4. First installation pipe; 41. Second installation pipe; 42. Third installation pipe; 43. Threaded sleeve; 44. Threaded pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, in combination with the accompanying drawings in the embodiments of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0018] Embodiment 1: As Figures 1-3 shown, the present invention provides a constant air volume fresh air fan, including a body 1. A support plate 2 is provided at the lower end of the body 1. The upper end of the support plate 2 is connected to the body 1 by bolt cooperation. A non-slip pad 21 is fixedly provided at the lower end of the support plate 2. An air outlet pipe 11 is provided at one end of the body 1. An adjustment pipe 3 is fixedly provided at one end of the air outlet pipe 11. An installation seat 31 is fixedly provided on the upper side of the outer surface of the adjustment pipe 3. An adjustment box 32 is detachably provided at the upper end of the installation seat 31. A worm 33 is rotatably provided between the inner walls on both sides of the adjustment box 32. A motor 34 is provided at one end of the adjustment box 32. The output end of the motor 34 penetrates through the adjustment box 32 and is fixedly connected to the worm 33. A worm gear 36 is meshed with the outer surface of the worm 33. A rotating column 35 is provided through the upper end of the worm gear 36. A connecting column 37 is provided at the lower end of the rotating column 35. The lower end of the connecting column 37 penetrates through the adjustment pipe 3 and is fixedly provided with a wind deflector 38. The body 1 is a fan body. The non-slip pad 21 at the lower end of the support plate 2 can improve the stability of the fan placement. After the motor 34 on the adjustment box 32 is started, its output end drives the worm 33 to rotate. The rotation of the worm 33 causes the worm gear 36 meshed with it to start rotating. The rotating column 35 at the upper end of the worm gear 36 rotates accordingly. The wind deflector 38 at the lower end of the connecting column 37 rotates in the adjustment pipe 3. By changing the angle of the wind deflector 38, the ventilation area in the adjustment pipe 3 can be adjusted, thereby realizing the adjustment of the air volume. An air volume sensor is installed at the air outlet position. In this way, when the air volume needs to be reduced, the motor 34 drives the worm 33 to drive the worm gear 36 to rotate the wind deflector 38 to form a larger included angle with the wind direction, thereby reducing the ventilation area, increasing the air duct resistance, and reducing the air volume; when the air volume needs to be increased, the wind deflector 38 is adjusted to a smaller included angle with the wind direction, increasing the ventilation area, reducing the air duct resistance, and thus increasing the air volume. Driving the wind deflector 38 to rotate through the transmission of the worm 33 and the worm gear 36 can realize the precise adjustment of the air volume. The transmission of the worm 33 and the worm gear 36 has the characteristics of a large transmission ratio and stable transmission, and can realize the fine adjustment of the angle of the wind deflector 38, thereby precisely controlling the air volume. This can provide a more suitable fresh air volume for different usage scenarios, such as rooms of different areas and different air quality requirements, improving the indoor air quality while avoiding energy waste.

[0019] The upper end of the rotating column 35 is rotatably connected to the upper end of the adjustment box 32. The upper end of the connecting column 37 is fixedly provided with a cross groove 371, and the lower end of the rotating column 35 is fixedly provided with a cross block 372 for cooperating with the cross groove 371. On the upper side of one end of the mounting base 31, a connecting block 322 is fixedly provided. On the lower side of one end of the adjustment box 32, a connecting plate 321 for cooperating with the connecting block 322 is fixedly provided. The connecting plate 321 and the connecting block 322 are connected by bolts in cooperation. On both sides of the lower end of the adjustment box 32, clamping plates 323 are fixedly provided. On both sides of the upper end of the mounting base 31, clamping grooves 324 for cooperating with the clamping plates 323 are provided. Through the cooperation of the cross block 372 at the lower end of the rotating column 35 and the cross groove 371 at the upper end of the connecting column 37, the rotation of the rotating column 35 can drive the rotation of the connecting column 37. In this way, through the connecting block 322 and the connecting plate 321, the adjustment box 32 is convenient to install and disassemble on the mounting base 31, which is convenient for maintenance. And the clamping plates 323 are clamped into the clamping grooves 324 to facilitate the positioning of the installation and improve the firmness of the installation.

[0020] Embodiment 2: As Figure 4 shown, one end of the adjustment pipe 3 is provided with a first installation pipe 4, a second installation pipe 41, and a third installation pipe 42. The size ratio of the first installation pipe 4, the second installation pipe 41, and the third installation pipe 42 is nine to seven to five. One end of the adjustment pipe 3, the first installation pipe 4, and the second installation pipe 41 are all fixedly provided with threaded sleeves 43. One end of the first installation pipe 4, the second installation pipe 41, and the third installation pipe 42 are all fixedly provided with threaded pipes 44. And the adjacent threaded sleeves 43 and threaded pipes 44 are used in cooperation. One end of the adjustment pipe 3 is connected with the first installation pipe 4, the second installation pipe 41, and the third installation pipe 42 of different sizes. These pipes are connected to each other through the threaded sleeves 43 and threaded pipes 44 at one end. Different sizes of installation pipes can be selected for connection according to actual needs to adapt to different installation scenarios and air volume requirements. In places with a large space and a large air volume requirement, the larger-sized first installation pipe 4 can be selected for connection; while in places with a small space and a low air volume requirement, the smaller-sized third installation pipe 42 can be selected, and the versatility is relatively high.

[0021] Working principle: The body 1 is the main body of the fan. The anti-slip pad 21 at the lower end of the support plate 2 can improve the stability of the fan placement. After the motor 34 on the adjustment box 32 is started, its output end drives the worm 33 to rotate. The rotation of the worm 33 causes the worm gear 36 meshing with it to start rotating. The rotating column 35 at the upper end of the worm gear 36 rotates accordingly. The wind deflector 38 at the lower end of the connecting column 37 rotates in the adjustment pipe 3. By changing the angle of the wind deflector 38, the ventilation area in the adjustment pipe 3 can be adjusted, thereby realizing the adjustment of the air volume. An air volume sensor is installed at the air outlet position. In this way, when it is necessary to reduce the air volume, the motor 34 drives the worm 33 to drive the worm gear 36 to make the wind deflector 38 rotate to form a larger angle with the wind direction, thereby reducing the ventilation area, increasing the air duct resistance, and reducing the air volume; when it is necessary to increase the air volume, the wind deflector 38 is adjusted to have a smaller angle with the wind direction, increasing the ventilation area, reducing the air duct resistance, and thus increasing the air volume. Driving the wind deflector 38 to rotate through the transmission of the worm 33 and the worm gear 36 can realize the precise adjustment of the air volume. The transmission of the worm 33 and the worm gear 36 has the characteristics of a large transmission ratio and stable transmission, and can realize the fine adjustment of the angle of the wind deflector 38, thereby precisely controlling the air volume. For different usage scenarios, such as rooms of different areas and different air quality requirements, it can provide a more appropriate fresh air volume, improve the indoor air quality while avoiding energy waste;

[0022] Through the cooperation of the cross block 372 at the lower end of the rotating column 35 and the cross groove 371 at the upper end of the connecting column 37, the rotation of the rotating column 35 can drive the connecting column 37 to rotate. In this way, through the connecting block 322 and the connecting plate 321, the adjustment box 32 is convenient to install and disassemble on the mounting seat 31, which is convenient for maintenance. And the clamping plate 323 is clamped into the clamping groove 324 to facilitate the positioning of the installation and improve the firmness of the installation;

[0023] One end of the adjustment pipe 3 is connected with the first installation pipe 4, the second installation pipe 41 and the third installation pipe 42 of different sizes. These pipes are connected to each other through the thread sleeve 43 and the threaded pipe 44 at one end. Different sizes of installation pipes can be selected for connection according to actual needs to adapt to different installation scenarios and air volume requirements. In places with a large space and a large air volume requirement, the first installation pipe 4 with a larger size can be selected for connection; while in places with a small space and a low air volume requirement, the third installation pipe 42 with a smaller size can be selected, and the versatility is relatively high.

[0024] Obviously, those skilled in the art can make various changes and modifications to the present utility model without departing from the spirit and scope of the present utility model. Thus, if these modifications and variations of the present utility model fall within the scope of the claims of the present utility model and their equivalent technologies, the present utility model also intends to include these changes and modifications.

Claims

1. A constant air volume fresh air unit, comprising a body (1), characterized in that: A support plate (2) is provided at the lower end of the body (1). An air outlet pipe (11) is provided at one end of the body (1). One end of the air outlet pipe (11) is fixedly provided with an adjusting pipe (3). An installation seat (31) is fixedly provided on the upper side of the outer surface of the adjusting pipe (3). An adjusting box (32) is detachably provided at the upper end of the installation seat (31). A worm (33) is rotatably provided between the inner walls on both sides of the adjusting box (32). A motor (34) is provided at one end of the adjusting box (32). The output end of the motor (34) penetrates through the adjusting box (32) and is fixedly connected to the worm (33). A worm gear (36) is meshed with the outer surface of the worm (33). A rotating column (35) is provided through the upper end of the worm gear (36). A connecting column (37) is provided at the lower end of the rotating column (35). The lower end of the connecting column (37) penetrates through the adjusting pipe (3) and is fixedly provided with a wind baffle (38).

2. The constant air volume fresh air machine according to claim 1, characterized in that: A first installation pipe (4), a second installation pipe (41) and a third installation pipe (42) are provided at one end of the adjusting pipe (3). Threaded sleeves (43) are fixedly provided at one ends of the adjusting pipe (3), the first installation pipe (4) and the second installation pipe (41). Threaded pipes (44) are fixedly provided at one ends of the first installation pipe (4), the second installation pipe (41) and the third installation pipe (42). The adjacent threaded sleeves (43) and threaded pipes (44) are used in cooperation.

3. The constant air volume fresh air unit according to claim 1, characterized in that: The upper end of the support plate (2) is connected to the body (1) by bolts. An anti-slip pad (21) is fixedly provided at the lower end of the support plate (2).

4. The constant air volume fresh air machine according to claim 1, characterized in that: The upper end of the rotating column (35) is rotatably connected to the upper end of the adjusting box (32). A cross slot (371) is fixedly provided at the upper end of the connecting column (37). A cross block (372) used in cooperation with the cross slot (371) is fixedly provided at the lower end of the rotating column (35).

5. The constant air volume fresh air unit according to claim 1, characterized in that: A connecting block (322) is fixedly provided on the upper side of one end of the installation seat (31). A connecting plate (321) used in cooperation with the connecting block (322) is fixedly provided at the lower side of one end of the adjusting box (32). The connecting plate (321) and the connecting block (322) are connected by bolts in cooperation.

6. The constant air volume fresh air unit according to claim 1, characterized in that: Clamping plates (323) are fixedly provided on both sides of the lower end of the adjusting box (32). Card slots (324) used in cooperation with the clamping plates (323) are provided on both sides of the upper end of the installation seat (31).

7. The constant air volume fresh air unit according to claim 1, characterized in that: The wind baffle (38) is disk-shaped, and the outer surface size of the wind baffle (38) is the same as the inner wall size of the adjusting pipe (3).

8. The constant air volume fresh air unit according to claim 2, wherein: The size ratio of the first installation pipe (4), the second installation pipe (41) and the third installation pipe (42) is nine to seven to five.

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