Warming fan

Abstract

The utility model discloses a warm ventilation fan which comprises a machine shell 2, the machine shell 2 is cylindrical, an air outlet 7 is formed in the side wall of the machine shell 2, a power port 8 is formed in the end face of one end of the machine shell 2, and an air inlet 6 is formed in the end face of the other end of the machine shell 2. The impeller assembly is arranged in the machine shell 2 and comprises a rotating bottom plate 3, an annular top plate 4 and fan blades 5, the two ends of the fan blades 5 are fixedly connected with the rotating bottom plate 3 and the annular top plate 4 correspondingly, the multiple fan blades 5 are arranged and distributed around the axis of the rotating bottom plate 3 and the axis of the annular top plate 4 in an array mode, and the outer ring side wall of the annular top plate 4 makes contact with the side wall of the machine shell 2 through a first bearing 10. The rotary bottom plate 3 is positioned at one end of the shell 2, which is provided with the power port 8; an output shaft 9 of the motor 1 penetrates through the power port 8 and then is fixedly connected with the rotating bottom plate 3, and the output shaft 9 makes contact with the side wall of the power port 8 through a second bearing 18.

Description

TECHNICAL FIELD

[0001] The utility model discloses a heating and ventilation equipment field, and specifically designs a heating and ventilation fan. BACKGROUND

[0002] The heating and ventilation fan is a kind of ventilation, warm equipment, and is commonly seen in factory workshop, generally by setting heating structure in fan, reach the purpose of warm air inlet. The site of factory is usually larger, needs larger power fan, needs to use larger quality fan blade, the burden of rotating shaft is larger, and it is easy to cause rotating shaft deformation under long-term use, makes fan blade deflection, thereby influence the service life of fan, and there is the security risk caused by fan blade separation. CONTENT OF UTILITY MODEL

[0003] The utility model discloses a heating and ventilation fan, and the specific technical scheme is as follows:

[0004] A kind of heating and ventilation fan, comprising: shell, shell is set to cylindrical, air outlet is arranged on shell lateral wall, one end face of shell is provided with power port, the other end face of shell is provided with air inlet;Impeller assembly, impeller assembly is set in shell, impeller assembly includes rotating base plate, annular top plate and fan blade, fan blade both ends are fixedly connected with rotating base plate and annular top plate, fan blade is set to multiple and is distributed in the array around the axis of rotating base plate and annular top plate, annular top plate outer ring lateral wall and shell lateral wall are contacted by first bearing, annular top plate is located at the one end where shell sets air inlet, rotating base plate is located at the one end where shell sets power port;Motor, the output shaft of motor is fixedly connected with rotating base plate after passing through power port, output shaft and the lateral wall of power port are contacted by second bearing, for controlling impeller assembly rotates in shell.

[0005] Shell further includes: air guide protective cover, air guide protective cover is set to annular, air guide protective cover cross section is set to recessed groove shape, recessed groove shape outer ring lateral wall inboard of air guide protective cover and annular top plate outer ring lateral wall are contacted by first bearing, recessed groove shape inner ring lateral wall inboard of air guide protective cover and annular top plate inner ring lateral wall are contacted by third bearing.

[0006] The recessed groove shape bottom wall of air guide protective cover is gradually inclined inward from outer ring to inner ring.

[0007] Impeller assembly further includes the adapter sleeve of one end opening, adapter sleeve opening end face is towards power port, adapter sleeve closed end is fixedly connected with rotating base plate, adapter sleeve outer periphery is contacted by second bearing with the lateral wall of power port, the output shaft of motor is inserted into adapter sleeve and is fixed with adapter sleeve.

[0008] Further include: positioning sleeve, positioning hole is arranged on positioning sleeve, the axis of positioning hole coincides with the axis of rotating base plate and output shaft, output shaft is fixedly connected with rotating base plate after passing through positioning hole, output shaft is contacted with positioning sleeve by fourth bearing.

[0009] The concave bottom of the air guide protection cover is provided with a filter screen.

[0010] The fan blade is detachably fixed to the rotating bottom plate and the annular top plate at both ends.

[0011] The above technical scheme of the utility model has the following beneficial technical effects: the outer ring sidewall of the annular top plate is in contact with the sidewall of the casing through the first bearing, so that the top of the fan blade is not suspended, and the gravity of the fan blade does not need to be additionally borne by the rotating shaft when rotating, thereby effectively preventing the rotating shaft from deforming and causing deflection and other risks. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a structural schematic view of the utility model;

[0013] Figure 2 is Figure 1 is an enlarged structural schematic view of part A in the middle;

[0014] Wherein: 1-motor, 2-casing, 3-rotating bottom plate, 4-annular top plate, 5-fan blade, 6-air inlet, 7-air outlet, 8-power port, 9-output shaft, 10-first bearing, 11-third bearing, 12-air guide protection cover, 13-adapting sleeve, 14-positioning sleeve, 15-positioning hole, 16-fourth bearing, 17-filter screen, 18-second bearing. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below in combination with specific implementation manners and with reference to the drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0016] A kind of warm fan, comprising: shell 2, shell 2 is arranged as cylindrical, air outlet 7 is provided on the side wall of shell 2, one end face of shell 2 is provided with power port 8, the other end face of shell 2 is provided with air inlet 6;Impeller assembly, impeller assembly is arranged in shell 2, impeller assembly includes rotating base plate 3, annular top plate 4 and fan blade 5, fan blade 5 two ends are fixedly connected with rotating base plate 3 and annular top plate 4 respectively, fan blade 5 is arranged as multiple and is arrayed around the axis of rotating base plate 3 and annular top plate 4, the outer ring side wall of annular top plate 4 is contacted with the side wall of shell 2 by first bearing 10, annular top plate 4 is located in the one end of shell 2 where air inlet 6 is arranged, rotating base plate 3 is located in the one end of shell 2 where power port 8 is arranged;Motor 1, the output shaft 9 of motor 1 is fixedly connected with rotating base plate 3 after passing through power port 8, the output shaft 9 is contacted with the side wall of power port 8 by second bearing 18, for controlling impeller assembly to rotate in shell 2.The outer ring side wall of annular top plate 4 is contacted with the side wall of shell 2 by first bearing 10, so that the top of fan blade 5 does not hang in the air, so that the gravity of fan blade 5 does not need to be additionally borne when rotating shaft rotates, effectively prevent the risk of deflection and deformation of rotating shaft.

[0017] Shell 2 further comprises: air guide protective cover 12, air guide protective cover 12 is arranged as annular, the cross section of air guide protective cover 12 is arranged as groove shape, the inner side of the groove shape outer ring side wall of air guide protective cover 12 is contacted with the outer ring side wall of annular top plate 4 by first bearing 10, the inner side of the groove shape inner ring side wall of air guide protective cover 12 is contacted with the inner ring side wall of annular top plate 4 by third bearing 11.The groove shape bottom wall of air guide protective cover 12 is gradually inclined inward from outer ring to inner ring.Impeller assembly further comprises one end opening adapter sleeve 13, the opening end face of adapter sleeve 13 faces power port 8, the closed end of adapter sleeve 13 is fixedly connected with rotating base plate 3, the outer periphery of adapter sleeve 13 is contacted with the side wall of power port 8 by second bearing 18, the output shaft 9 of motor 1 is fixed with adapter sleeve 13 after being inserted into adapter sleeve 13.It further comprises: positioning sleeve 14, positioning hole 15 is arranged on positioning sleeve 14, the axis of positioning hole 15 coincides with the axis of rotating base plate 3 and output shaft 9, the output shaft 9 is fixedly connected with rotating base plate 3 after passing through positioning hole 15, the output shaft 9 is contacted with positioning sleeve 14 by fourth bearing 16.The bottom of the groove shape of air guide protective cover 12 is provided with filter screen 17.Shell 2 side wall is provided with switchable access hole, fan blade 5 two ends are respectively detachably fixedly connected with rotating base plate 3 and annular top plate 4.In the maintenance, fan blade 5 can be taken out separately from access hole for replacement.

Claims

1. A warm air blower characterized by comprising: It includes: The shell (2) is provided as a cylindrical shape, the shell (2) is provided with an air outlet (7) on the side wall, one end of the shell (2) is provided with a power port (8), the other end of the shell (2) is provided with an air inlet (6); Impeller assembly, the impeller assembly is arranged in the shell (2), the impeller assembly includes a rotating bottom plate (3), an annular top plate (4) and a fan blade (5), the fan blade (5) is respectively fixedly connected with the rotating bottom plate (3) and the annular top plate (4) at both ends, the fan blade (5) is arranged as a plurality of and arrayed around the axis of the rotating bottom plate (3) and the annular top plate (4), the outer ring side wall of the annular top plate (4) is contacted with the side wall of the shell (2) through the first bearing (10), the annular top plate (4) is located at one end of the shell (2) provided with the air inlet (6), the rotating bottom plate (3) is located at one end of the shell (2) provided with the power port (8); The output shaft (9) of the motor (1) is fixedly connected with the rotating bottom plate (3) after penetrating through the power port (8), the output shaft (9) is contacted with the side wall of the power port (8) through the second bearing (18), which is used for controlling the rotation of the impeller assembly in the shell (2).

2. The heater blower of claim 1 wherein, The shell (2) further includes: The air guide protection cover (12) is arranged as an annular shape, the cross section of the air guide protection cover (12) is arranged as a groove shape, the inner side of the groove-shaped outer ring side wall of the air guide protection cover (12) is contacted with the outer ring side wall of the annular top plate (4) through the first bearing (10), and the inner side of the groove-shaped inner ring side wall of the air guide protection cover (12) is contacted with the inner ring side wall of the annular top plate (4) through the third bearing (11).

3. The heater blower of claim 2 wherein, The groove-shaped bottom wall of the air guide protection cover (12) is gradually inclined inward from the outer ring to the inner ring.

4. The heater blower of claim 1 wherein, The impeller assembly further includes an adapter sleeve (13) with one end open, the open end of the adapter sleeve (13) faces the power port (8), the closed end of the adapter sleeve (13) is fixedly connected with the rotating bottom plate (3), the outer periphery of the adapter sleeve (13) is contacted with the side wall of the power port (8) through the second bearing (18), and the output shaft (9) of the motor (1) is fixedly connected with the adapter sleeve (13) after being inserted into the adapter sleeve (13).

5. The heater blower of claim 1 wherein, Further includes: The positioning sleeve (14) is provided with a positioning hole (15), the axis of the positioning hole (15) coincides with the axes of the rotating bottom plate (3) and the output shaft (9), the output shaft (9) is fixedly connected with the rotating bottom plate (3) after penetrating through the positioning hole (15), and the output shaft (9) is contacted with the positioning sleeve (14) through the fourth bearing (16).

6. The heater blower of claim 2 wherein, The groove-shaped bottom of the air guide protection cover (12) is provided with a filter screen (17).

7. The heater blower of claim 1 wherein, The side wall of the shell (2) is provided with an openable and closable access hole, and the fan blade (5) is detachably fixedly connected with the rotating bottom plate (3) and the annular top plate (4) at both ends.

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