Novel cross-flow fan

Abstract

The utility model discloses a novel cross-flow fan, and relates to the technical field of cross-flow fans. After the driving machine is started, the transmission shaft can be driven to do circular motion, so that the purpose of rotating the fixing plate and the blades in the fixing plate can be achieved, external gas can be sucked into the wind shell and then discharged through the filter screen in the protective shell, the interior of the wind shell can be cleaned by dismounting the mounting pin, and the wind shell is convenient to clean. Regular maintenance of parts can also be realized; the purpose of air exhaust can be achieved under the action of the filter screen, external dust can be prevented from entering the air shell, namely, the cleanliness of exhaust air can be guaranteed, introduced air can be filtered under the action of the dustproof net, and the external dust can be prevented from entering the air shell. And the dustproof net can be disassembled by disassembling the connecting pin, namely, the dustproof net can be cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of crossflow fans, in particular to a novel crossflow fan. Background Art

[0002] A crossflow fan is also called a crossflow fan. The impeller is multi-blade, long cylindrical, and has forward multi-wing blades. When the impeller rotates, the airflow enters the blade grid from the opening of the impeller, passes through the inside of the impeller, and is discharged into the volute from the other side of the blade grid to form a working airflow. The flow of air in the impeller is very complicated, and the airflow velocity field is unstable. There is also a vortex in the impeller, with the center located near the volute tongue. The existence of the vortex causes a circulating flow at the output end of the impeller. Outside the vortex, the airflow streamlines in the impeller are arc-shaped. Therefore, the flow velocity at each point on the outer circumference of the impeller is inconsistent. The closer to the vortex center, the greater the velocity, and the closer to the volute, the smaller the velocity. The airflow velocity and pressure at the fan outlet are not uniform, so the fan flow coefficient and pressure coefficient are average values. The position of the vortex has a great influence on the performance of the cross flow fan. When the center of the vortex is close to the inner circumference of the impeller and close to the volute tongue, the fan performance is better. When the center of the vortex is far away from the volute tongue, the area of the circulating flow increases, the fan efficiency decreases, and the degree of flow instability increases.

[0003] During the use of cross-flow fan technology, there are problems such as poor practicality and the air inlet and outlet are easily blocked by foreign objects, which affects the use of the cross-flow fan. For this reason, we propose a new type of cross-flow fan. Utility Model Content

[0004] The purpose of the utility model is to solve the problems mentioned in the above background technology, and the utility model provides a new cross-flow fan.

[0005] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0006] A novel crossflow fan comprises a wind casing and an air induction mechanism, wherein a protective mechanism is arranged above the wind casing, the protective mechanism comprises a protective casing, and the left side of the protective casing is detachably connected to the wind casing by a positioning pin, three filter screens are evenly arranged inside the protective casing along the longitudinal direction, and three fixing pins are installed on both sides of each of the filter screens; the air induction mechanism comprises two fixing covers detachably connected to the wind casing and the protective casing by installing pins, wherein a driving machine is installed inside the fixing cover located on the front side, and the driving inner end of the driving machine is transmission-connected with a transmission shaft, and the circumferential surface of the transmission shaft is evenly installed with five fixing plates along the axial direction, and a plurality of blades are arranged between the fixing plates in a circumferentially symmetrical manner about the center of the circle; a dustproof net is arranged on the left side of the wind casing, and a plurality of connecting pins are evenly arranged on the upper and lower ends of the dustproof net along the longitudinal direction.

[0007] Further, a plurality of positioning holes arranged in concentric circles are formed at the left end of the protective housing and the upper end of the left side of the air housing, and the positioning pins are inserted into the positioning holes.

[0008] Further, a through groove is formed inside the protective housing, and the filter screen is installed in the through groove.

[0009] Further, an external spline is provided on the circumferential surface of the front side of the transmission shaft, an internal spline is formed inside the drive shaft of the driving machine, the transmission shaft is connected to the drive shaft through splines, and a bearing is sleeved on the circumferential surface of the intersection of the rear side of the transmission shaft and the fixed cover located at the rear side.

[0010] Further, a positioning groove is formed inside the fixing plate, and the blade is inserted into the positioning groove.

[0011] Further, three support seats are uniformly arranged along the longitudinal direction at the lower end of the air housing.

[0012] Further, a plurality of connection holes arranged in concentric circles are formed at the upper and lower ends of the dust-proof net and the inside of the left side of the air housing, and the connection pins are inserted into the connection holes.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. After starting the driving machine of the present utility model, it can drive the transmission shaft to perform circular motion, so as to realize the rotation of the fixing plate and the blades inside it, thereby pumping the external gas into the inside of the air housing and then discharging it through the filter screen inside the protective housing. By disassembling the mounting pins, the inside of the air housing can be cleaned, and regular maintenance of the components can also be achieved.

[0015] 2. Under the action of the filter screen, the present utility model can achieve the purpose of exhausting air and can prevent external dust from entering the inside of the air housing, that is, it can ensure the cleanliness of the exhausted air. Under the action of the dust-proof net, the introduced gas can be filtered, that is, it can prevent external dust from entering the inside of the air housing. By disassembling the connection pins, the dust-proof net can be disassembled, that is, the cleaning of the dust-proof net can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional schematic diagram of the present utility model;

[0017] Figure 2 is a side cross-sectional view of the present utility model;

[0018] Figure 3 is a three-dimensional schematic diagram of the protection mechanism in the present utility model;

[0019] Figure 4 is a three-dimensional schematic diagram of the air induction mechanism in the present utility model.

[0020] Reference numerals: 1, air housing; 2, protection mechanism; 201, protection housing; 202, positioning pin; 203, filter screen; 204, fixing pin; 3, air induction mechanism; 301, fixing cover; 302, mounting pin; 303, drive motor; 304, transmission shaft; 305, fixing plate; 306, blade; 4, support base; 5, dust screen; 6, connecting pin. Detailed implementation manners

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

[0022] Please refer to Figure 1 - Figure 4 , the present utility model provides a new cross-flow fan, including an air housing 1 and an air induction mechanism 3. A protection mechanism 2 is provided above the air housing 1. The protection mechanism 2 includes a protection housing 201, and the left side of the protection housing 201 is detachably connected to the air housing 1 through a positioning pin 202. Three filter screens 203 are evenly arranged longitudinally inside the protection housing 201, and three fixing pins 204 are installed on both sides of each filter screen 203.

[0023] Under the action of the air housing 1, the purpose of gas diversion can be achieved. Under the cooperation of the air housing 1 and the positioning pin 202, the installation stability of the protection housing 201 can be ensured. Under the cooperation of the protection housing 201 and the fixing pin 204, the installation stability of the filter screen 203 can be ensured. Under the action of the filter screen 203, the purpose of exhaust can be achieved, and dust from the outside can be prevented from entering the inside of the air housing 1, that is, the cleanliness of the exhaust can be ensured.

[0024] The air induction mechanism 3 includes two fixing covers 301 detachably connected to the air housing 1 and the protection housing 201 through mounting pins 302. Among them, a drive motor 303 is installed inside the fixing cover 301 located on the front side. The driving inner end of the drive motor 303 is drivingly connected to a transmission shaft 304. Five fixing plates 305 are evenly installed on the circumferential surface of the transmission shaft 304 along the axial direction. A plurality of blades 306 are arranged in a circumferentially symmetric manner about the center between the fixing plates 305.

[0025] Under the action of the installation pin 302, the connection stability between the fixed cover 301 and the wind housing 1 and the protective housing 201 can be ensured. By disassembling the installation pin 302, the disassembly of the fixed cover 301 can be realized. Under the action of the fixed cover 301, the installation stability of the driving machine 303 can be ensured. Under the action of the driving machine 303, the rotation purpose of the transmission shaft 304 can be realized. Under the action of the transmission shaft 304, the installation stability of the fixed plate 305 can be ensured. Under the action of the fixed plate 305, the installation stability of the blade 306 can be ensured. After starting the driving machine 303, it can drive the transmission shaft 304 to perform circular motion, so as to realize the rotation purpose of the fixed plate 305 and the blade 306 inside it, so as to pump the external gas into the interior of the wind housing 1 and then discharge it through the filter screen 203 inside the protective housing 201. By disassembling the installation pin 302, the interior of the wind housing 1 can be cleaned, and the regular maintenance of the components can also be realized.

[0026] A dust-proof net 5 is arranged on the left side of the wind housing 1, and a plurality of connecting pins 6 are uniformly arranged along the longitudinal direction at the upper and lower ends of the dust-proof net 5.

[0027] Under the cooperation of the wind housing 1 and the connecting pin 6, the installation stability of the dust-proof net 5 can be ensured. Under the action of the dust-proof net 5, the introduced gas can be filtered, that is, the external dust can be prevented from entering the interior of the wind housing 1. By disassembling the connecting pin 6, the disassembly of the dust-proof net 5 can be realized, that is, the cleaning of the dust-proof net 5 can be realized.

[0028] In this embodiment, preferably, a plurality of concentrically arranged positioning holes are provided at the left end of the protective housing 201 and the upper end of the left side of the wind housing 1, and the positioning pin 202 is inserted into the positioning holes; under the action of the positioning holes, the installation stability of the positioning pin 202 can be ensured, and the disassembly of the positioning pin 202 can be realized.

[0029] In this embodiment, preferably, a through groove is provided inside the protective housing 201, and the filter screen 203 is installed in the through groove; under the action of the through groove, the installation stability of the filter screen 203 can be ensured.

[0030] In this embodiment, preferably, external splines are provided on the circumferential surface of the front side of the transmission shaft 304, internal splines are provided inside the drive shaft of the driving machine 303, and the transmission shaft 304 is connected to the drive shaft through splines. A bearing is sleeved on the circumferential surface of the intersection of the rear side of the transmission shaft 304 and the fixed cover 301 located at the rear side; through the spline connection, the transmission stability between the transmission shaft 304 and the drive shaft can be ensured. Under the action of the bearing, the installation stability of the rear side of the transmission shaft 304 can be ensured, and the rotation of the transmission shaft 304 will not be affected.

[0031] In this embodiment, preferably, a positioning groove is formed inside the fixing plate 305, and the blade 306 is inserted into the positioning groove; the positioning groove can ensure the installation stability of the blade 306.

[0032] In this embodiment, preferably, three support seats 4 are evenly arranged along the longitudinal direction at the lower end of the wind housing 1; the support seats 4 can achieve the purpose of supporting the wind housing 1.

[0033] In this embodiment, preferably, a plurality of connection holes arranged in concentric circles are formed in the upper and lower ends of the dust-proof net 5 and inside the left side of the wind housing 1, and the connecting pins 6 are inserted into the connection holes; the connection holes can ensure the installation stability of the connecting pins 6, and the cooperation between the connecting pins 6 and the connection holes can ensure the installation stability of the dust-proof net 5.

[0034] The working principle and usage process of the present utility model: When the device is in use, the support seats 4 can achieve the purpose of supporting the wind housing 1, the wind housing 1 can achieve the purpose of guiding the gas, the cooperation between the wind housing 1 and the positioning pin 202 can ensure the installation stability of the protective housing 201, the cooperation between the protective housing 201 and the fixing pin 204 can ensure the installation stability of the filter net 203, the filter net 203 can achieve the purpose of exhausting air, and can prevent external dust from entering the inside of the wind housing 1, that is, it can ensure the cleanliness of the exhausted air. The dust-proof net 5 can filter the introduced gas, that is, it can prevent external dust from entering the inside of the wind housing 1. By disassembling the connecting pins 6, the disassembly of the dust-proof net 5 can be realized, that is, the cleaning of the dust-proof net 5 can be realized; after starting the driving machine 303, it can drive the transmission shaft 304 to perform a circular motion, so as to achieve the purpose of rotating the fixing plate 305 and the blade 306 inside it, so as to draw external gas into the inside of the wind housing 1 and then discharge it through the filter net 203 inside the protective housing 201. By disassembling the mounting pins 302, the inside of the wind housing 1 can be cleaned, and the regular maintenance of the components can also be realized.

[0035] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A new cross-flow fan, characterized in that: It includes a wind housing (1) and an air guiding mechanism (3). A protection mechanism (2) is arranged above the wind housing (1). The protection mechanism (2) includes a protection shell (201), and the left side of the protection shell (201) is detachably connected to the wind housing (1) through a positioning pin (202). Three filter nets (203) are evenly arranged longitudinally inside the protection shell (201), and three fixing pins (204) are installed on both sides of each filter net (203); The air guiding mechanism (3) includes two fixing covers (301) detachably connected to the wind housing (1) and the protection shell (201) through mounting pins (302). Among them, a driving machine (303) is installed inside the fixing cover (301) located on the front side. The driving inner end of the driving machine (303) is drivingly connected to a transmission shaft (304). Five fixing plates (305) are evenly installed on the circumferential surface of the transmission shaft (304) along the axial direction. A plurality of blades (306) are arranged in a circumferential symmetry about the center between the fixing plates (305); A dust-proof net (5) is arranged on the left side of the wind housing (1). A plurality of connecting pins (6) are evenly arranged longitudinally at the upper and lower ends of the dust-proof net (5).

2. The novel cross-flow fan according to claim 1, wherein: A plurality of concentrically arranged positioning holes are opened at the left end of the protection shell (201) and the upper end of the left side of the wind housing (1). The positioning pin (202) is inserted into the positioning holes.

3. A novel cross-flow fan according to claim 1, characterized in that: A through groove is opened inside the protection shell (201), and the filter net (203) is installed in the through groove.

4. A novel cross-flow fan according to claim 1, characterized in that: External splines are provided on the circumferential surface of the front side of the transmission shaft (304). Internal splines are opened inside the driving shaft of the driving machine (303). The transmission shaft (304) is connected to the driving shaft through splines, and a bearing is sleeved on the circumferential surface of the intersection of the rear side of the transmission shaft (304) and the fixing cover (301) located on the rear side.

5. A novel cross-flow fan according to claim 1, characterized in that: A positioning groove is opened inside the fixing plate (305), and the blade (306) is inserted into the positioning groove.

6. A novel cross-flow fan according to claim 1, characterized in that: Three support seats (4) are evenly arranged longitudinally at the lower end of the wind housing (1).

7. A novel cross-flow fan according to claim 1, characterized in that: A plurality of concentrically arranged connecting holes are opened at the upper and lower ends of the dust-proof net (5) and the inner part of the left side of the wind housing (1). The connecting pin (6) is inserted into the connecting holes.

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