CN220452238U - Ventilator with compact structure - Google Patents

Abstract

The utility model discloses a ventilator with a compact structure, which comprises a shell component, wherein a containing cavity is arranged in the shell component, a volute is arranged in the containing cavity and is abutted to the upper top surface and the lower bottom surface of the containing cavity, a wind wheel and a driving motor for driving the wind wheel to rotate are arranged in the volute, the driving motor and the wind wheel are overlapped in the vertical direction, and the height of the wind wheel occupies at least two thirds of the height of the containing cavity; the top surface of the accommodating cavity is provided with a motor bracket, the driving motor is fixed on the motor bracket, and at least three fourths of the driving motor extends into the wind wheel; according to the utility model, the height of the wind wheel is set to be at least two thirds of the height of the accommodating cavity, and the driving motor and the wind wheel are overlapped in the vertical direction, so that the height of the ventilator in the vertical direction can be effectively reduced, and the ventilator is convenient to install in a kitchen cabinet or a ceiling of a kitchen.

Description

Ventilator with compact structure

Technical Field

The utility model belongs to the technical field of ventilators, and particularly relates to a ventilator with a compact structure.

Background

The ventilator used as a range hood relay device has an effect of assisting a range hood in exhausting oil smoke, and is generally installed at an upper end of the range hood and located in a cabinet or a kitchen ceiling. Because the space in the cabinet or the kitchen ceiling is limited, and the space reserved for the ventilator in the height direction is very small due to the influence of the smoke tube of the range hood. In order to install a ventilator with sufficient fume exhausting capability in a smaller space, the structure of the existing ventilator needs to be improved, and the height of the ventilator in the vertical direction is reduced.

Disclosure of Invention

The utility model aims to provide the ventilator with a compact structure, which improves the structure of the existing ventilator, effectively reduces the height of the ventilator in the vertical direction and is convenient to install in a cabinet or a kitchen ceiling.

The utility model provides a ventilator with a compact structure, which comprises a shell component, wherein a containing cavity is arranged in the shell component, a volute is arranged in the containing cavity, the volute is abutted against the upper top surface and the lower bottom surface of the containing cavity, a wind wheel and a driving motor for driving the wind wheel to rotate are arranged in the volute, the driving motor and the wind wheel are overlapped in the vertical direction, and the height of the wind wheel occupies at least two thirds of the height of the containing cavity.

Further, the top surface of the accommodating cavity is provided with a motor bracket, the driving motor is fixed on the motor bracket, the driving motor stretches into the wind wheel to enable the motor bracket and the wind wheel to be nested in the vertical direction, and at least three fourths of the driving motor stretches into the wind wheel.

Further, the wind wheel comprises arc-shaped blades which are distributed in an annular mode, the arc-shaped blades encircle a wind wheel inner cavity, a wind wheel support is arranged in the wind wheel inner cavity, the wind wheel support penetrates through and fixes all the arc-shaped blades, the driving motor comprises a motor main body and an output rotating shaft, the motor main body is fixed at the bottom of the motor support, and the output rotating shaft is fixed with the wind wheel support.

Further, the wind wheel bracket is provided with a concave part, the output rotating shaft is provided with a positioning pin which can be erected on the top surface of the concave part, and the part below the positioning pin of the output rotating shaft passes through the concave part; annular thin plates for fixedly connecting all the arc-shaped blades are respectively arranged at the head end and the tail end of the arc-shaped blades; the arc-shaped blades and the wind wheel bracket are made of metal materials.

Further, two sides of the volute are tightly attached to the inner side wall surface of the shell assembly, at least one side of the volute is provided with a vertical cutting surface, and the cutting surface is pressed on the inner side wall surface of the shell assembly.

Further, the upper end of spiral case is equipped with the wire casing, the holding chamber top surface is connected with the U type support that is used for holding intracavity electric wire location, be equipped with automatically controlled box on the lateral wall of casing subassembly, this lateral wall is equipped with the intercommunication the holding chamber with the inside threading through-hole of automatically controlled box, the electric wire can follow the threading through-hole passes.

Further, the noise reduction structure is noise reduction cotton attached to the inner side wall of the shell assembly.

Further, the shell assembly comprises a bottom plate, an air inlet is formed in the bottom plate, a connecting seat is connected to the bottom of the bottom plate, a bearing part capable of extending into the air inlet and an annular groove connected with the bottom of the bearing part are formed in the connecting seat, the diameter of the bearing part is smaller than the inner diameter of the wind wheel, and the outer side wall of the bearing part is of an inwards concave arc structure.

Further, the bottom plate is provided with an inclined downward flow guide surface, the tail end of the flow guide surface is provided with an annular convex step extending downwards, the annular convex step is arranged in the annular groove and leans against the outer side wall of the annular groove, a gap is reserved between the annular convex step and the inner side wall of the annular groove, the bottom of the annular groove is provided with a flow guide hole communicated to the inner wall of the connecting seat, and the flow guide hole is inclined inwards from top to bottom.

Further, the housing assembly is further provided with an exhaust hole, the volute is provided with a volute tongue, an opening of the volute tongue faces the exhaust hole, the exhaust hole is provided with a connector capable of being connected with an external ventilating duct, and the air inlet is communicated with the exhaust hole and forms an air channel.

According to the utility model, the height of the wind wheel is set to be at least two thirds of the height of the accommodating cavity, and the driving motor and the wind wheel are overlapped in the vertical direction, so that the height of the ventilator in the vertical direction can be effectively reduced, and the ventilator is convenient to install in a kitchen cabinet or a ceiling of a kitchen. Additional advantages of the utility model are set forth in the description which follows.

Drawings

FIG. 1 is a schematic perspective view of a ventilator provided by the present utility model;

FIG. 2 is a cross-sectional view of a ventilator provided by the present utility model;

FIG. 3 is an exploded view of a ventilator provided by the present utility model;

FIG. 4 is a top view of the ventilator of the present utility model with the top plate and drive motor removed;

FIG. 5 is an exploded view of a housing assembly of the ventilator provided by the present utility model;

FIG. 6 is a schematic perspective view of a side fascia of the housing assembly of the utility model;

FIG. 7 is a schematic perspective view of the floor of the housing assembly of the present utility model;

FIG. 8 is a schematic perspective view of a connector base of the housing assembly of the present utility model;

fig. 9 is a schematic perspective view of the scroll casing of the present utility model;

FIG. 10 is a schematic perspective view of a wind turbine according to the present utility model;

FIG. 11 is a top view of the wind rotor of the present utility model;

FIG. 12 is a schematic perspective view of a U-shaped bracket of the present utility model;

FIG. 13 is a schematic view of the structure of the ventilator ceiling of the present utility model;

FIG. 14 is an enlarged view of area A of FIG. 13;

FIG. 15 is a schematic view of the structure of the connection block used in the installation of the ventilator ceiling provided by the utility model;

FIG. 16 is a schematic view of a wall mount of a ventilator according to the present utility model;

fig. 17 is a longitudinal cross-sectional view of a hanger plate used in the wall-mount installation of the ventilator provided by the present utility model.

In the figure: 1. a housing assembly; 11. a top plate; 12. side coaming; 121. a threading through hole; 122. a mounting hole; 13. a bottom plate; 131. a flow guiding surface; 132. annular convex steps; 14. a connecting seat; 141. a receiving part; 142. an annular groove; 143. a deflector aperture; 15. an air outlet pipeline; 2. a volute; 21. a wire slot; 22. cutting the noodles; 3. a driving motor; 4. a wind wheel; 41. an arc-shaped blade; 42. a wind wheel bracket; 43. an annular thin plate; 5. an electric control box; 6. a U-shaped bracket; 7. a motor bracket; 8. a suspended ceiling mechanism; 81. a boom; 82. a connecting block; 821. a first connection portion; 822. a second connecting portion; 823. a third connecting portion; 824. a hanging hole; 825. a notch; 9. a hanging plate; 91. a hook; 911. a bulge part; 912. a straight portion; 92. wall hanging parts; 921. a vertical portion; 922. a protrusion.

The specific embodiment is as follows:

in the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The following is further described with reference to the accompanying drawings and specific examples:

example 1

Referring to fig. 1, 2 and 3, the present embodiment provides a ventilator with compact structure, which includes a housing assembly 1, a volute 2, a driving motor 3, a wind wheel 4 and an electric control box 5. The volute 2, the driving motor 3 and the wind wheel 4 are all arranged in the shell assembly 1, the driving motor 3 is connected with the wind wheel 4 and used for driving the wind wheel 4 to rotate, the electric control box 5 is arranged on the outer side of the shell assembly 1, and the electric control box 5 is used for controlling the operation of the driving motor 3.

As shown in fig. 3, 4, 5 and 9, the housing assembly 1 includes a top plate 11, side panels 12, a bottom plate 13, a connection seat 14 and an air outlet duct 15. The roof 11 and the bottom plate 13 set up respectively in the upper and lower both ends of side coaming 12, and bottom plate 13, side coaming 12 and roof 11 jointly form the accommodation chamber, and spiral case 2, driving motor 3 and wind wheel 4 all set up in this accommodation chamber, and driving motor 3 and wind wheel 4 all are located spiral case 2. The top plate 11 is provided with a plurality of connecting holes as required, among which are connecting holes for installing the scroll casing 2, connecting holes for installing the driving motor 3, the driving motor 3 comprises a motor body and an output rotating shaft, the motor body is installed at the bottom of the motor bracket 7, and the motor bracket 7 is installed on the top plate 11. The top of spiral case 2 is connected with roof 11, and the bottom of spiral case 2 is connected with bottom plate 13, and one side of spiral case 2 is equipped with vertical cutting face 22, and cutting face 22 presses on an inside wall surface of side wall plate 12, and cutting face 22 can set up only one, also can set up a plurality of, and cutting face 22 has the locate function. The top plate 11, the volute 2 and the bottom plate 13 together enclose a duct chamber. The middle part of bottom plate 13 is equipped with the fresh air inlet, be provided with the exhaust vent on one lateral wall of side fascia 12, be equipped with the volute tongue on the spiral case 2, the opening subtend exhaust vent of volute tongue is equipped with air intake and air outlet on the spiral case 2, the air intake is the lower port of spiral case 2, the air outlet is the opening of volute tongue, the air intake and the fresh air inlet of spiral case 2 are connected, the air outlet is connected with the exhaust vent, air-out pipeline 15 is installed on the lateral wall that side fascia 12 is provided with the exhaust vent, be equipped with the air-out hole through exhaust vent and wind channel chamber intercommunication in the air-out pipeline 15, then the gas that gets into by the air inlet is by the air-out hole exhaust of air-out pipeline 15.

As shown in fig. 2, 4, 10 and 11, the wind wheel 4 includes arc-shaped blades 41 distributed in a ring shape, the arc-shaped blades 41 enclose a wind wheel inner cavity, a wind wheel bracket 42 is arranged in the wind wheel inner cavity, the wind wheel bracket 42 penetrates and fixes all the arc-shaped blades 41, and the arc-shaped blades 41 and the wind wheel bracket 42 are made of metal materials, such as stainless steel, aluminum alloy and the like. The annular thin plates 43 fixedly connecting all the arc-shaped blades 41 are respectively arranged at the head end and the tail end of the arc-shaped blades 41, and the height of the wind wheel 4 at least occupies two thirds of the height of the accommodating cavity formed by the bottom plate 13, the side coaming 12 and the top plate 11. The output rotating shaft of the driving motor 3 is fixed with the wind wheel bracket 42. The wind wheel support 42 is provided with a concave part, a positioning pin capable of being erected on the top surface of the concave part of the wind wheel support 42 is arranged on the output rotating shaft of the driving motor 3, the part of the output rotating shaft of the driving motor 3 below the positioning pin penetrates through the concave part of the wind wheel support 42, the driving motor is installed on the wind wheel support 42 through a fixing nut, and the positioning pin has the functions of positioning and ensuring synchronous rotation of the output rotating shaft of the driving motor 3 and the wind wheel 4. It is known that the drive motor 3 is partially disposed in the wind wheel 4, and that at least three quarters of the drive motor 3 is required to be disposed in the wind wheel 4, which is achieved by the arrangement of the height position of the wind wheel support 42 and the recessed structure for mounting the drive motor 3.

As can be seen from the above description, the top plate 11, the side wall plate 12 and the bottom plate 13 of the housing assembly 1 together form a accommodating cavity, the volute 2 is disposed in the accommodating cavity, the upper end of the volute 2 is abutted to the upper top surface of the accommodating cavity, and the lower end is abutted to the lower bottom surface of the accommodating cavity. The driving motor 3 and the wind wheel 4 are both positioned in the volute 2, the driving motor 3 is fixedly installed on the top plate 11 through the motor bracket 7, namely, the driving motor is installed on the top wall of the accommodating cavity, the wind wheel 4 is connected with an output rotating shaft of the driving motor 3 through the wind wheel bracket 42, the height of the wind wheel 4 at least occupies two thirds of the height of the accommodating cavity, and the driving motor 3 and the wind wheel 4 are partially overlapped in the vertical direction, so that at least three quarters of the height of the driving motor 3 extends into the wind wheel 4. Through the arrangement, the height of the ventilator in the vertical direction can be effectively reduced, and the ventilator is convenient to install in a cabinet or a ceiling of a kitchen.

As shown in fig. 3, 6, 9 and 12, the driving motor 3 is located in the scroll case 2, and since the driving motor 3 needs to be connected to the electronic control box 5 through a wire, a wire slot 21 allowing the wire to pass through is provided at the upper end of the scroll case 2. Meanwhile, a U-shaped bracket 6 is mounted on the top plate 11, mounting plate parts are extended to two sides at the upper end of the U-shaped bracket 6, and screw through holes for mounting the U-shaped bracket 6 on the top plate 11 through screws are formed in the mounting plate parts. The U-shaped bracket 6 is used for positioning the electric wires in the accommodating cavity and preventing the wind wheel 4 from rotating to damage the electric wires. The side wall plate 12 is used for installing the threading through hole 121 that the power supply line passed is provided with on the lateral wall of automatically controlled box 5, and threading through hole 121 intercommunication holding chamber and the inside of automatically controlled box 5.

As shown in fig. 2, 3, 5, 7 and 8, the bottom plate 13 of the housing assembly 1 is disposed at the lower end of the side wall plate 12, the connecting seat 14 is disposed at the lower end of the bottom plate 13, the connecting seat 14 is connected with the bottom plate 13, and the connecting seat 14 is provided with a vent hole matched with the air inlet hole of the bottom plate 13. The lower end of the connecting seat 14 is provided with an annular sleeve groove structure, and the connecting seat 14 is connected with an external device, such as a smoke tube, a check valve and the like through the annular sleeve groove structure. The spiral case 2 is provided with a fastening structure connected with the spiral case 2 and the bottom plate 13, the fastening structure comprises a plurality of fasteners distributed along the shape of the bottom surface of the spiral case 2 and a sealing ring arranged between the bottom surface of the spiral case 2 and the bottom plate 13, and the fasteners can be screws. The fastening structure enables the volute 2 to be fixedly connected and hermetically connected with the bottom plate 13. The inner bottom wall of the bottom plate 13 is provided with a guide surface 131 which inclines outwards and inwards, the outermost end of the guide surface 131 is arranged on the inner side edge of the fastening structure, the innermost end of the guide surface 131 extends to the air inlet of the bottom plate 13, and the inner wall of the air inlet is provided with an annular convex step 132 which extends towards the direction of the connecting seat 14, namely extends downwards. The connecting seat 14 is provided with an annular groove 142, the annular convex step 132 is propped against the annular groove 142 and forms vertical stress, the width of the annular groove 142 is larger than the thickness of the annular convex step 132, and the annular convex step 132 is propped against the outer side wall of the annular groove 142. A plurality of diversion holes 143 are uniformly arranged in the annular groove 142 along the circumferential direction of the annular groove, the diversion holes 143 penetrate through the inner side wall of the annular groove 142 and are communicated with the vent holes, and the diversion holes 143 are provided with surfaces which incline downwards from outside to inside, so that oil is more conveniently conducted. The inner side wall of the annular groove 142 is provided with an upward extending bearing part 141, the longitudinal section of the bearing part 141 is splayed, and the bearing part extends into the air inlet hole.

The ventilator provided by the utility model is a relay device, is matched with a range hood for use, and can be arranged on a smoke pipe or a check valve of the range hood. The air outlet duct 15 of the ventilator is connected to the kitchen external environment or common flue, into which the ventilator discharges the cooking fumes. When the ventilator works, the driving motor 3 drives the wind wheel 4 to rotate, and oil smoke enters the volute 2 through the air inlet hole, and then enters the kitchen external environment or the public flue through the air outlet of the volute 2 and the air outlet pipeline 15. When the ventilator stops running, the oil drops firstly fall on the guide surface 131 of the bottom plate 13 under the action of gravity, then flow into the annular groove 142 of the connecting seat 14 along the guide surface 131 and the annular convex steps 132 under the action of gravity, and then are discharged through the guide holes 143 arranged in the annular groove 142, and finally enter the oil collecting box of the range hood to be collected.

Therefore, by arranging the flow guide structure of the shell component 1, the oil dirt accumulated in the ventilator can be effectively discharged into the range hood in time, and then enters the oil collecting box of the range hood to be collected, so that the oil dirt discharged by the range hood can be conveniently cleaned together.

In addition, in order to reduce the noise when the ventilator operates, the ventilator is inside to be provided with the structure of making an uproar that falls, falls the structure of making an uproar and including pasting the cotton of making an uproar of establishing on the casing subassembly 1 inside wall and setting up the elastic damping piece in the contact position of spiral case 2 and casing subassembly 1 inner wall.

Example 2

The present embodiment provides a ceiling mounting method and a ceiling mounting structure of the ventilator provided in embodiment 1.

As shown in fig. 6, 13, 14 and 15, the ceiling mounting ventilator needs to use the ceiling mechanism 8, the ceiling mechanism 8 is connected with the mounting holes 122 formed in the side wall plate 12, the mounting holes 122 are formed in the upper ends of two opposite side walls of the side wall plate 12, and only one mounting hole 122 or two mounting holes 122 can be formed in each side wall. When only one mounting hole 122 is arranged on each of the two side walls, the two mounting holes 122 are diagonally arranged, the two mounting holes 122 are respectively arranged on the two side walls, the mounting holes 122 on the two side walls are symmetrically arranged, and the two mounting holes 122 on each side wall are arranged in the middle of the side wall in a central symmetry manner.

As shown in fig. 13, 14 and 15, the suspended ceiling mechanism 8 includes a suspension rod 81 and a connection block 82, the suspension rod 81 may be made of a thin sheet metal material using a screw, and the connection block 82 may be made of a thin sheet metal material. The connection block 82 includes a first connection portion 821, a second connection portion 822, and a third connection portion 823, where the first connection portion 821 abuts against an inner wall of the mounting hole 122 and is disposed in an inner cavity of the housing assembly 1, and the second connection portion 822 abuts against an outer side wall of the side wall plate 12 and is fixedly connected with the side wall plate 12 through screws. The first connecting portion 821 is parallel to the second connecting portion 822, and a connection portion between the first connecting portion 821 and the second connecting portion is in a U-shaped structure. The third connection part 823 is perpendicular to the second connection part 822, a hanging hole 824 into which the hanging rod 81 can be inserted is formed in the third connection part 823, a clamping piece is arranged on the hanging hole 824, and the upper end face of the clamping piece is tightly attached to the lower end face of the third connection part 823. The hanging hole 824 is provided with a notch 825 at an end far away from the second connecting portion 822, the caliber of the notch 825 is far smaller than the diameter of the hanging hole 824, and the cross-sectional area of the clamping piece is larger than that of the hanging hole 824. The boom 81 has an upper end connected to the roof and a lower end connected to the connection block 82 by nuts.

Example 3

The present embodiment provides a wall-mounted mounting manner and a wall-mounted mounting structure of the ventilator provided in embodiment 1.

As shown in fig. 16 and 17, the ceiling-mounted ventilator requires the use of a wall-hanging mechanism that is connected to a mounting hole 122 provided in the side wall panel 12, and a plurality of mounting holes 122 are provided at the upper end of one side wall of the side wall panel 12 along the length direction of this side wall. The wall hanging mechanism comprises a hanging plate 9 which can be fixed on a wall, the hanging plate 9 is a thin-wall sheet metal part, the hanging plate 9 comprises a wall hanging part 92 and hooks 91 arranged on the wall hanging part 92, and the positions and the number of the hooks 91 correspond to those of the mounting holes 122. The wall built-up portion 92 includes a vertical portion 921 capable of being attached to a wall surface and a protruding portion 922 recessed toward one side of the hanger 91, a plurality of fastener mounting holes are provided in the vertical portion 921 along a longitudinal direction thereof, the vertical portion 921 is mounted on the wall by fasteners penetrating through the fastener mounting holes and penetrating into the wall. The hanger 91 can penetrate the mounting hole 122 to enable the housing to be mounted on the wall, the projection length of the hanger 91 in the horizontal direction is larger than the thickness of the side wall plate 12, and the hanger 91 extends obliquely upwards along the lower end of the protruding portion 922, so that a gap is formed between the ventilator and the vertical portion. The hook 91 is provided with an abutment surface, which forms an abutment with the mounting hole 122, and the abutment is located near the bending portion of the hook 91. The protrusion 922 of the hanging wall 92 is U-shaped, and the hook 91 includes a bulge portion 911 connected to the protrusion 922 and a straight portion 912 connected to the bulge portion 911, the bulge portion 911 gradually bulges from the periphery to the middle, and both side edges of the bulge portion 911 abut against the side walls of the mounting hole 122 to form an abutting portion.

Embodiment 2 and embodiment 3 provide two different mounting modes and mounting structures for a ventilator, one type of suspended ceiling is mounted on a wall, the former type of suspended ceiling can be used for mounting the ventilator in a kitchen ceiling, the latter type of suspended ceiling can be used for mounting the ventilator on a wall corresponding to the inner space of a cabinet or on a wall corresponding to the inner space of the kitchen ceiling, and the two mounting modes can realize stable mounting of the ventilator. In kitchen smallpox, the furred ceiling installation is lower to the mounted position requirement of ventilation blower, and wall built-up installation then requires the ventilation blower to be close to wall installation, consequently based on the restriction of ventilation blower mounted position, in kitchen smallpox, furred ceiling mounting means is superior to wall built-up mounting means.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. The utility model provides a compact structure's ventilation blower, its characterized in that includes the casing subassembly, be equipped with the holding chamber in the casing subassembly, the holding intracavity is equipped with the spiral case, the spiral case butt in the upper top surface and the lower bottom surface of holding chamber, be equipped with the wind wheel in the spiral case and be used for driving wind wheel pivoted driving motor, driving motor with the wind wheel overlaps the setting in vertical direction, the height of wind wheel occupies at least two thirds of holding chamber height.

2. A compact ventilator according to claim 1, wherein the top surface of the housing cavity is provided with a motor mount, the drive motor being secured to the motor mount, the drive motor extending into the rotor such that the two are nested in a vertical direction, the drive motor extending into the rotor at least three quarters of the height.

3. The ventilator of claim 1, wherein the wind wheel comprises arc-shaped blades distributed in a ring shape, the arc-shaped blades enclose a wind wheel inner cavity, a wind wheel bracket is arranged in the wind wheel inner cavity, the wind wheel bracket penetrates and fixes all the arc-shaped blades, the driving motor comprises a motor main body and an output rotating shaft, the motor main body is fixed at the bottom of the motor bracket, and the output rotating shaft is fixed with the wind wheel bracket.

4. A compact ventilator according to claim 3 wherein the rotor support has a recess, the output shaft has a locating pin capable of being mounted on the top surface of the recess, and a portion of the output shaft below the locating pin passes through the recess; annular thin plates for fixedly connecting all the arc-shaped blades are respectively arranged at the head end and the tail end of the arc-shaped blades; the arc-shaped blades and the wind wheel bracket are made of metal materials.

5. The compact ventilator of claim 1 wherein the two sides of the volute are closely adjacent the inside wall surface of the housing assembly, and wherein at least one side of the volute is provided with a vertical cutting surface which is pressed against the inside wall surface of the housing assembly.

6. The ventilator of claim 1, wherein the upper end of the volute is provided with a wire slot, the top surface of the accommodating cavity is connected with a U-shaped bracket for positioning wires in the accommodating cavity, an electric control box is arranged on a side wall of the housing assembly, a threading through hole is formed in the side wall and is communicated with the accommodating cavity and the electric control box, and the wires can pass through the threading through hole.

7. The compact ventilator of claim 1, further comprising a noise reducing structure, wherein the noise reducing structure is noise reducing cotton disposed against an inner sidewall of the housing assembly.

8. The ventilator of claim 1, wherein the housing assembly comprises a bottom plate, an air inlet is formed in the bottom plate, a connecting seat is connected to the bottom of the bottom plate, a receiving portion capable of extending into the air inlet and an annular groove connected with the bottom of the receiving portion are formed in the connecting seat, the diameter of the receiving portion is smaller than the inner diameter of the wind wheel, and the outer side wall of the receiving portion is of an inward concave arc structure.

9. The ventilator of claim 8, wherein the bottom plate is provided with a downward-inclined guide surface, the end of the guide surface is provided with a downward-extending annular convex step, the annular convex step is arranged in the annular groove and leans against the outer side wall of the annular groove, a gap is reserved between the annular convex step and the inner side wall of the annular groove, the bottom of the annular groove is provided with a guide hole communicated to the inner wall of the connecting seat, and the guide hole is inclined inwards from top to bottom.

10. The ventilator of claim 8, wherein the housing assembly further comprises an exhaust vent, the volute is provided with a volute tongue, an opening of the volute tongue faces the exhaust vent, the exhaust vent is provided with a connector capable of being connected with an external ventilation pipeline, and the air inlet is communicated with the exhaust vent and forms an air channel.