Centrifugal jet type ventilator

Abstract

The utility model relates to the technical field of fans, in particular to a centrifugal jet type ventilator which comprises a shell, a centrifugal impeller is rotatably connected into the shell, a motor is fixedly connected to the top end of the shell, the output shaft end of the motor is fixedly connected with the centrifugal impeller, and a first electric telescopic rod is fixedly connected to the top end of the shell through a supporting base. A second fixing seat is fixedly connected to the bottom end of the shell, a second electric telescopic rod is fixedly installed in the second fixing seat, a second fixing plate is fixedly connected to the output end of the second electric telescopic rod, a fixing cover is fixedly connected to the upper end of the second fixing plate, and the baffle is located in the fixing cover and tightly attached to the fixing cover; the baffle is matched with the fixing cover to form a jet flow nozzle which is located at the left end of the shell. The jet flow type fan has the function of conveniently adjusting the size of the jet flow spray head, so that the whole jet flow type fan can flexibly change the wind speed and the jet range of outwards jetted air at any time.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a centrifugal jet ventilator. Background Art

[0002] A jet fan is a special fan, mainly used in the longitudinal ventilation systems of tunnels such as highways, railways and subways to provide all the thrust; it can also be used in sensitive parts of semi-transverse ventilation systems or transverse ventilation systems, such as the inlets and outlets of tunnels, to induce air flow or exhaust smoke, etc.

[0003] In the existing jet fans, the size of the jet nozzle is fixed. When the air flow rate is constant, the wind speed ejected outwards is also constant. At this time, the range of the ejected wind is fixed. When it is necessary to change the wind speed and range, it is inconvenient to adjust on the basis of the existing jet fans, and only different jet fans need to be reinstalled, which is very troublesome. Therefore, a centrifugal jet ventilator needs to be designed. Summary of the Invention

[0004] The purpose of the utility model is to solve the disadvantages existing in the prior art, and a centrifugal jet ventilator is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme: a centrifugal jet ventilator, including a housing, a centrifugal impeller is rotatably connected inside the housing, a motor is fixedly connected to the top end of the housing, the output shaft end of the motor is fixedly connected to the centrifugal impeller, an air inlet corresponding to the position of the centrifugal impeller is opened on the lower end surface of the housing, a first electric telescopic rod is fixedly connected to the top end of the housing through a support seat, the output end of the first electric telescopic rod is fixedly connected to a first fixing plate, a baffle is fixedly connected to the bottom end of the first fixing plate, the baffle is located above the housing and is slidably connected to the housing, a second fixing seat is fixedly connected to the bottom end of the housing, a second electric telescopic rod is fixedly installed inside the second fixing seat, the output end of the second electric telescopic rod is fixedly connected to a second fixing plate, a fixing cover is fixedly connected to the upper end of the second fixing plate, the fixing cover is closely attached to the housing and is slidably connected to the housing, the baffle is located inside the fixing cover and is closely attached to the fixing cover, and the baffle and the fixing cover cooperate to form a jet nozzle, and the jet nozzle is located at the left end of the housing.

[0006] Further, a dust-proof net is fixedly installed inside the air inlet.

[0007] Further, a fixing frame is fixedly connected to the top end of the housing, and a plurality of mounting holes are opened on the left end surface and the upper end surface of the fixing frame.

[0008] Further, support plates are fixedly connected to both the front and rear ends of the outer shell. Guide rods are fixedly connected to the left ends of the two support plates, and stoppers are fixedly connected to the left ends of the two guide rods. First fixing seats are fixedly connected to both the front and rear ends of the fixed cover. The guide rods penetrate through the first fixing seats, and the first fixing seats are slidably connected to the guide rods.

[0009] Further, a sliding groove is formed in the upper end surface of the outer shell, and a sliding block is slidably connected inside the sliding groove. The sliding block is fixedly installed at the bottom end of the baffle.

[0010] Further, the upper end surface of the outer shell that fits with the baffle and the baffle are both inclined, and are inclined downward gradually from right to left.

[0011] Further, sealing grooves are formed in both the front and rear end surfaces of the baffle, and rubber pads are adhesively connected inside the sealing grooves through glue.

[0012] The utility model has the following beneficial effects:

[0013] Compared with the prior art, for this centrifugal jet ventilator, through the mutual cooperation of the first electric telescopic rod, the second electric telescopic rod, the baffle and the fixed cover, when controlling the operation of the first electric telescopic rod and the second electric telescopic rod simultaneously, the baffle and the fixed cover will be driven to move along the outer shell respectively. At this time, the size of the jet nozzle formed by the cooperation of the baffle and the fixed cover will change. When the baffle and the fixed cover move leftward, the jet nozzle gradually decreases. When the baffle and the fixed cover move rightward, the size of the jet nozzle will increase. Since the size of the jet nozzle can be flexibly changed, the whole jet ventilator can flexibly change the wind speed and range of the outward jet at any time, thus increasing the functions of the jet ventilator. In addition, since only the positions of the baffle and the fixed cover need to be adjusted, it is convenient to adjust the size of the jet nozzle of the whole jet ventilator, and there is no need to replace different jet ventilators, which is more practical and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the overall structural schematic diagram of the front view of the utility model;

[0015] Figure 2 is the overall structural schematic diagram of the bottom view of the utility model;

[0016] Figure 3 is the structural schematic diagram of the utility model after splitting the baffle;

[0017] Figure 4 is the structural schematic diagram of the partial cross-section of the front view of the utility model;

[0018] Figure 5 is Figure 4 the enlarged structural schematic diagram of A in

[0019] Legend Explanation:

[0020] 1. Outer shell; 2. Fixed frame; 3. Mounting hole; 4. First electric telescopic rod; 5. First fixing plate; 6. Baffle; 7. Guide rod; 8. Support plate; 9. Stopper; 10. First fixing seat; 11. Fixed cover; 12. Dust-proof net; 13. Sliding groove; 14. Centrifugal impeller; 15. Second fixing seat; 16. Second electric telescopic rod; 17. Second fixing plate; 18. Sliding block; 19. Motor; 20. Air inlet; 21. Jet nozzle. Detailed Implementation Manner

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0022] Refer to Figures 1-5 , a centrifugal jet ventilator provided by the present utility model includes an outer shell 1. A centrifugal impeller 14 is rotatably connected inside the outer shell 1. The top end of the outer shell 1 is fixedly connected with a motor 19. The output shaft end of the motor 19 is fixedly connected with the centrifugal impeller 14. An air inlet 20 corresponding to the position of the centrifugal impeller 14 is opened on the lower end surface of the outer shell 1. The top end of the outer shell 1 is fixedly connected with a first electric telescopic rod 4 through a support seat. The output end of the first electric telescopic rod 4 is fixedly connected with a first fixing plate 5. The bottom end of the first fixing plate 5 is fixedly connected with a baffle 6. The baffle 6 is located at the upper end of the outer shell 1 and is slidably connected with the outer shell 1. The bottom end of the outer shell 1 is fixedly connected with a second fixing seat 15. A second electric telescopic rod 16 is fixedly installed inside the second fixing seat 15. The output end of the second electric telescopic rod 16 is fixedly connected with a second fixing plate 17. The upper end of the second fixing plate 17 is fixedly connected with a fixed cover 11. The fixed cover 11 is closely attached to the outer shell 1 and is slidably connected with the outer shell 1. The baffle 6 is located inside the fixed cover 11 and is closely attached to the fixed cover 11. The baffle 6 and the fixed cover 11 cooperate to form a jet nozzle 21. The jet nozzle 21 is located at the left end of the outer shell 1.

[0023] During operation, the present utility model has the function of conveniently adjusting the size of the jet nozzle, so that the entire jet ventilator can flexibly change the wind speed and range of the outward jet at any time; in the present utility model, the first electric telescopic rod 4 and the second electric telescopic rod 16 are externally connected to the same controller, and the two electric telescopic rods are controlled to operate simultaneously by the same controller (the controller is not shown in the figure).

[0024] Further, as Figure 2 shown, a dust-proof net 12 is fixedly installed inside the air inlet 20. During operation, the presence of the dust-proof net 12 reduces the probability of external dust entering the outer shell 1 through the air inlet 20.

[0025] Further, as Figure 1 shown, a fixing frame 2 is fixedly connected to the top end of the outer shell 1, and a plurality of mounting holes 3 are formed in both the left end face and the upper end face of the fixing frame 2. During operation, the plurality of mounting holes 3 in different directions facilitate the cooperation with bolts and the fixing frame 2 to fixedly install the whole device at a suitable position on the use site.

[0026] Further, support plates 8 are fixedly connected to both the front and rear ends of the outer shell 1, guide rods 7 are fixedly connected to the left ends of the two support plates 8, stoppers 9 are fixedly connected to the left ends of the two guide rods 7, first fixing seats 10 are fixedly connected to both the front and rear ends of the fixing cover 11, the guide rods 7 penetrate through the first fixing seats 10, and the first fixing seats 10 are slidably connected to the guide rods 7. During operation, with the mutual cooperation of the guide rods 7 and the stoppers 9, not only can the fixing cover 11 move stably along the outer shell 1, but also the moving range of the fixing cover 11 can be restricted to prevent the fixing cover 11 from detaching from the outer shell 1 and the fixing rod.

[0027] Further, as Figures 4-5 shown, a sliding groove 13 is formed in the upper end face of the outer shell 1, a sliding block 18 is slidably connected inside the sliding groove 13, and the sliding block 18 is fixedly installed at the bottom end of the baffle 6. During operation, with the cooperation of the sliding groove 13 and the sliding block 18, the baffle 6 can move stably, and the baffle 6 is not easily detached from the outer shell 1.

[0028] Further, the upper end face of the outer shell 1 in contact with the baffle 6 and the baffle 6 are both inclined, and gradually incline downward from right to left. During operation, only in this way can the size of the jet nozzle 21 be changed as the positions of the baffle 6 and the fixing cover 11 are adjusted.

[0029] Further, sealing grooves are formed in both the front and rear end faces of the baffle 6, and rubber pads are adhesively connected inside the sealing grooves with glue. During operation, with the cooperation of the rubber pads and the sealing grooves between the baffle 6 and the fixing cover 11, they fit more closely, and the sealing effect between the two is stronger, the amount of leaked air from the connection between the two is less, and finally the blown air is more concentrated and ejected from the jet nozzle 21.

[0030] Working principle:

[0031] During use, the motor 19 operates to drive the centrifugal impeller 14 to rotate. At this time, the wind at the working site enters along the air inlet 20 and is discharged outward through the jet nozzle 21. When it is necessary to change the size of the jet nozzle 21, only the controller connected to the two electric telescopic rods needs to be operated. The controller controls the first electric telescopic rod 4 and the second electric telescopic rod 16 to operate simultaneously, which will drive the baffle 6 and the fixed cover 11 to move along the housing 1 respectively. At this time, the size of the jet nozzle 21 formed by the cooperation of the baffle 6 and the fixed cover 11 will change. When the baffle 6 and the fixed cover 11 move to the left, the jet nozzle gradually decreases. When the baffle 6 and the fixed cover 11 move to the right, the size of the jet nozzle 21 will increase. Since the size of the jet nozzle 21 can be flexibly changed, the entire jet fan can flexibly change the wind speed and range of the outward jet at any time.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A centrifugal jet ventilator, comprising a housing (1), characterized in that: Inside the housing (1), a centrifugal impeller (14) is rotatably connected. At the top of the housing (1), a motor (19) is fixedly connected. The output shaft end of the motor (19) is fixedly connected to the centrifugal impeller (14). An air inlet (20) corresponding to the position of the centrifugal impeller (14) is provided on the lower end face of the housing (1). At the top of the housing (1), a first electric telescopic rod (4) is fixedly connected through a support seat. The output end of the first electric telescopic rod (4) is fixedly connected to a first fixing plate (5). At the bottom end of the first fixing plate (5), a baffle (6) is fixedly connected. The baffle (6) is located at the upper end of the housing (1) and is slidably connected to the housing (1). At the bottom end of the housing (1), a second fixing seat (15) is fixedly connected. Inside the second fixing seat (15), a second electric telescopic rod (16) is fixedly installed. The output end of the second electric telescopic rod (16) is fixedly connected to a second fixing plate (17). At the upper end of the second fixing plate (17), a fixing cover (11) is fixedly connected. The fixing cover (11) is in close fit with the housing (1) and is slidably connected to the housing (1). The baffle (6) is located inside the fixing cover (11) and is in close fit with the fixing cover (11). The baffle (6) and the fixing cover (11) cooperate to form a jet nozzle (21). The jet nozzle (21) is located at the left end of the housing (1).

2. The centrifugal jet type ventilator according to claim 1, wherein: A dust-proof net (12) is fixedly installed inside the air inlet (20).

3. The centrifugal jet type ventilator according to claim 1, wherein: At the top of the housing (1), a fixing frame (2) is fixedly connected. A plurality of mounting holes (3) are provided on the left end face and the upper end face of the fixing frame (2).

4. The centrifugal jet type ventilator according to claim 3, characterized in that: Support plates (8) are fixedly connected to both the front and rear ends of the housing (1). Guide rods (7) are fixedly connected to the left ends of the two support plates (8). Blocks (9) are fixedly connected to the left ends of the two guide rods (7). First fixing seats (10) are fixedly connected to both the front and rear ends of the fixing cover (11). The guide rods (7) pass through the first fixing seats (10), and the first fixing seats (10) are slidably connected to the guide rods (7).

5. The centrifugal jet type ventilator according to claim 4, wherein: A sliding groove (13) is provided on the upper end face of the housing (1). A sliding block (18) is slidably connected inside the sliding groove (13). The sliding block (18) is fixedly installed at the bottom end of the baffle (6).

6. The centrifugal jet type ventilator according to claim 5, characterized in that: The upper end face of the housing (1) in contact with the baffle (6) and the baffle (6) are both inclined, and inclined downward gradually from right to left.

7. The centrifugal jet type ventilator according to claim 6, characterized in that: Sealing grooves are provided on both the front and rear end faces of the baffle (6). Rubber pads are adhesively connected inside the sealing grooves through glue.

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