CN210425424U - Ventilation fan - Google Patents
Ventilation fan Download PDFInfo
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- CN210425424U CN210425424U CN201921075733.6U CN201921075733U CN210425424U CN 210425424 U CN210425424 U CN 210425424U CN 201921075733 U CN201921075733 U CN 201921075733U CN 210425424 U CN210425424 U CN 210425424U
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- air outlet
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Abstract
The utility model provides a ventilation fan, include: the framework that forms the outline, be used for inhaling the air intake in the framework, be used for discharging the air to the air outlet of taking a breath outside the framework, communicate the air intake with the air exchange wind path of air outlet, lead to the snail shell of air outlet of taking a breath from the air intake, still include: the circuit board box is arranged in the circuit board box containing area, the circuit board box is used for containing electric components used for controlling controlled components, and the partition board is used for partitioning the ventilation air path and the circuit board box containing area and is used for restraining air flowing through the ventilation air path from flowing to the circuit board box containing area.
Description
Technical Field
The utility model relates to a ventilator.
Background
A ventilation fan is an electric appliance for exhausting air, for example, indoor air to the outside. A conventional ventilation fan generally includes a frame, an air inlet and an air outlet provided in the frame, and a circuit board box provided in the frame.
When the ventilator is used in a high-temperature and high-humidity environment, steam or water may enter the frame through the air suction port and then enter the circuit board box arranged in the frame to damage the circuit board.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In order to solve the above problem, the present invention provides a ventilation fan which can prevent water or steam from damaging a circuit board, thereby improving safety.
(II) technical scheme
In order to achieve the above object, the utility model provides a ventilator, include:
a frame body forming the outline,
An air inlet for sucking air into the frame,
A ventilation air outlet for discharging air outside the frame body,
A ventilation air path for communicating the air inlet and the ventilation air outlet,
A snail shell which leads the air from the air inlet to the ventilation air outlet,
Further comprising:
a circuit board box accommodating section which is separated from the ventilation air outlet by the snail shell and is arranged at the position opposite to the ventilation air outlet,
A circuit board box disposed in the circuit board box accommodating section and accommodating electric components for controlling the controlled component,
And a partition plate for partitioning the ventilation air path and the circuit board box housing section and for suppressing the air flowing through the ventilation air path from flowing into the circuit board box housing section.
In an embodiment of the present invention, in an installation state of the ventilation fan, two ends of the partition plate in the width direction of the frame body extend to 2 side walls opposite to the frame body;
two ends of the partition board in the height direction of the frame body extend to the top wall of the frame body and the bottom surface of the frame body respectively.
In the embodiment of the utility model, the air supply device also comprises an air supply unit which forms the airflow from the air inlet to the ventilation air outlet,
the snail shell comprises:
a scroll plate which is a curved plate that enlarges the wind path in the snail shell along the rotation direction of the air supply unit at the periphery of the air supply unit,
A snail shell front panel arranged opposite to the opening and a snail shell back panel arranged opposite to the snail shell front panel, wherein the snail shell front panel is arranged between the vortex plate and the snail shell back panel;
the partition plate includes a first partition plate and a second partition plate connected to the first partition plate,
the scroll plate forms a part of the first partition plate.
In the embodiment of the utility model, the snail shell is integrally formed with a hollow lead wire receiving base extending from the partition board side to the ventilation air outlet side,
and a storage space which is independent from the ventilation air path and is arranged between the circuit board box storage section and a controlled component connected with the electric component in the circuit board box is formed by clamping the lead storage base and the second partition board.
In an embodiment of the present invention, the second partition plate and the first partition plate are connected to form a part of the partition plate, and are also engaged with the lead storage base to form the waterproof cover of the storage space.
In the embodiment of the present invention, the first and second,
the electric component and the controlled component are connected through a lead,
the lead wire is pulled out from the top surface side to the bottom surface side as it goes from the inside to the outside of the side wall of the circuit board box;
the side wall of the storage space is drawn from the bottom surface side to the top surface side as the side wall advances from the outside to the inside.
In the embodiment of the present invention, the circuit board case has a drawing hole for drawing the lead wire,
the housing space has a drawing hole for drawing the lead,
the draw-out hole includes a box inner opening provided on the side of the inner space of the circuit board box and a box outer opening closer to the bottom surface side than the box inner opening,
the pull-in hole includes a housing outer opening provided on an outer space side of the housing space and a housing inner opening closer to a top surface side than the housing outer opening.
In the embodiment of the utility model, the edge of the lead wire receiving base and the edge of the waterproof cover are both provided with double ribs,
the double ribs at the edge of the lead storage base and the double ribs at the edge of the waterproof cover are mutually clamped to connect the lead storage base and the waterproof cover.
In the embodiment of the utility model, the circuit board box is provided with a first connecting box which is arranged opposite to the containing space,
the first connection box has the drawing hole,
A first box exhaust port for exhausting steam to the outside of the first connection box is formed in the top surface of the first connection box;
and a first frame body air outlet corresponding to the first box air outlet is arranged on the top surface of the frame body.
In an embodiment of the present invention, the receiving space has a second connection box disposed opposite to the circuit board box,
the second connection box has the drawing hole,
A second box exhaust port for exhausting steam to the outside of the second connection box is formed in the top surface of the second connection box;
and a second frame body air outlet corresponding to the second box air outlet is arranged on the top surface of the frame body.
In an embodiment of the present invention, the lead portion of the lead located in the first connection box is kept away from the vertical lower portion of the first box exhaust port.
In an embodiment of the present invention, the lead portion of the lead wire located in the second connection box is kept away from the vertical lower portion of the air outlet of the second connection box.
In an embodiment of the present invention, the ventilation fan further includes:
a circulating air outlet arranged at the position near the ventilation air outlet and used for blowing out air,
A heating unit located at the upstream side of the circulating air outlet,
the heating unit is connected to the electrical component through a lead wire housed in the housing space.
In an embodiment of the present invention, the ventilation fan further includes:
a circulating air path communicated with the air inlet and the circulating air outlet,
A switching plate for switching the circulation air path and the ventilation air path,
A switch plate driving device for driving the switch plate to rotate,
the switch board driving device is connected to the electrical component through a lead wire housed in the housing space.
(III) advantageous effects
The utility model discloses a set up the division board, the snail shell is accomodate the interval with the circuit board box and is separated by the division board, and the air current in the wind path of taking a breath and the circulation wind path is accomodate the interval with the circuit board box and is separated by the division board mutually basically between, and the division board can restrain the air current to the at utmost and get into in the interval is accomodate to the steam is restrained to the at utmost in the entering circuit board box, the security of scavenger fan is improved.
Drawings
Fig. 1 is a cross-sectional view of a ventilator according to an embodiment of the present invention.
Fig. 2 is a structural diagram of a face mask of the ventilation fan according to the embodiment of the present invention.
Fig. 3 is a structural diagram of the ventilator according to the embodiment of the present invention, in which one side wall of the frame body and the face mask are removed.
Fig. 4 is a structural diagram of the ventilation fan according to the embodiment of the present invention, in which the frame and the circuit board case storage section are removed.
Fig. 5 is a bottom view of the ventilator according to the embodiment of the present invention without the second partition plate.
Fig. 6 is a structural diagram of a second partition plate of the ventilator according to the embodiment of the present invention.
Fig. 7 is a second cross-sectional view of the ventilator according to the embodiment of the present invention.
Fig. 8A is a schematic view of a circuit board box of the ventilation fan according to the embodiment of the present invention.
Fig. 8B is a schematic diagram of the circuit board box of the ventilation fan without the first connection box.
Fig. 9 is a third sectional view of the ventilator according to the embodiment of the present invention.
Fig. 10 is a plan view of the ventilator according to the embodiment of the present invention with the frame removed.
[ notation ] to show
10-a ventilator;
11-a frame body; 111-top wall; 112-a side wall; 112A-is opposite to the side wall of the air outlet of the snail shell; 113-bottom opening; 114-air exchange air outlet; 115-a bottom surface; 116-a first frame vent; 117-second frame vent;
12-a face mask; 121-air inlet; 122-circulation air outlet; 123-metal strips; 124-card slot;
13-snail shell; 131-snail shell front panel; 132-snail shell back panel; 133-a scroll plate; 134-snail shell air outlet;
14-a heating unit;
15-circulation air path;
16-ventilation air passage;
17-a switch board;
18-a divider plate;
19-a first divider plate; 191-interference prevention opening; 192-opening a hole;
20-a second divider panel; 201-a partition; 202-a waterproof cover; 203-double ribs;
21-a lead receiving base; 211-a second junction box; 212-receiving an outer opening; 213-receiving interior opening; 214-second cartridge vent; 215-double ribs;
22-circuit board box containing section;
32-a storage space;
33-an air outlet part;
23-a circuit board box; 231-a first junction box; 232-mounting the box; 233-outer side wall; 234-inner side wall; 235-a cartridge exterior opening; 236-box internal opening; 237-first cartridge exhaust; 238-electrical components;
24-a lighting fixture;
25-a lead;
26-an air supply unit; 261-a fan; 262-a motor;
27-opening of the side wall of the circuit board box.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments and the accompanying drawings. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model discloses scavenger fan 10, first space of intercommunication and second space. The first space and the second space are two separated spaces, for example, a space divided by a wall. The ventilation fan 10 may be installed in the first space or the second space. The ventilation fan 10 can suck air in any one of the two spaces and supply air to the space, or supply air to the other space, wherein the space into which the ventilation fan 10 sucks air is a first space, and the other space separated from the first space is a second space. In the present embodiment, the ventilation fan 10 is installed in the first space, but the ventilation fan 10 may be installed in the second space or a space other than the first space and the second space. In this embodiment, the first space is indoor, and the second space is outdoor.
As shown in fig. 1 to 3, the ventilator 10 comprises: the air conditioner includes a frame 11, a face mask 12, an air inlet 121, a ventilation air outlet 114, a circulation air outlet 122, a snail shell 13, an air blowing unit 26, a controlled member, a heating unit 14, a ventilation air duct 16, a circulation air duct 15, a switching plate 17, a switching plate driving device (not shown), a circuit board box 23, and a circuit board box housing section 22.
The frame 11 forms the outer contour of the ventilation fan 10 and has a hollow rectangular parallelepiped box shape. The frame body 11 includes: a top wall 111, four side walls 112 erected from the outer periphery of the top wall 111, and a bottom opening 113 provided opposite the top wall 111 and located at a bottom surface 115 of the frame 11. When the ventilation fan 10 is in the installed state, the top wall 111 is a surface parallel to the indoor floor and is located vertically above the frame 11, and the side wall 112 is a surface perpendicular to the indoor floor.
The bottom opening 113 is located on the side of the frame 11 opposite to the top wall 111, and is an opening surrounded by the lower edges of the 4 side walls 112, and indoor air can enter or blow out of the frame 11 through the bottom opening 113.
The cover 12 has a flat plate shape, and is fixed to the heating unit 14 and the circuit board case 23 so as to cover the bottom surface opening 113. The specific manner of fixing the face mask 12 to the heating unit 14 and the circuit board case 23 is not limited in this embodiment, and for example, the face mask 12 is provided with an opening, the heating unit 14 and the circuit board case 23 are provided with a cylindrical hollow hole extending from the bottom opening 112 side to the top wall 111 side of the frame body 11, and the face mask 12 is fixed to the heating unit 14 and the circuit board case 23 by screwing the screw after penetrating the opening of the face mask 12 and the cylindrical hollow hole of the heating unit 14 and the circuit board case 23.
The air inlet 121 is an opening formed in the face mask 12, and is disposed at a position of the face mask 12 opposite to the bottom opening 113. When the ventilation fan 10 is in the installation state, the air inlet 121 faces the indoor space and communicates the indoor space and the inside of the frame 11 through the bottom opening 113. Indoor air can enter the frame 11 through the air inlet 121 and the bottom opening 113.
The ventilation outlet 114 is an opening of the frame 11. The ventilation outlet 114 may be provided on any one of the top wall 111 and the four side walls 112 of the frame 11. In this embodiment, the ventilation outlet 114 is disposed on the sidewall 112A opposite to the snail shell outlet, so that the air path is smoother. The ventilation outlet 114 communicates the outdoor with the inside of the housing 11, and air in the housing 11 can be blown out through the ventilation outlet 114.
The circulation outlet 122 is an opening disposed on the mask 12 and located near the ventilation outlet 114. When the ventilation fan 10 is in the installed state, the circulation outlet 122 faces the room and communicates the room with the internal space of the frame 11. The air in the housing 11 is blown into the room through the circulation outlet 122. That is, in the present embodiment, since the circulation outlet 122 and the ventilation outlet 114 are in a 90-degree positional relationship and are perpendicular to each other, the circulation outlet 122 and the ventilation outlet 114 can be opened and closed by the switching plate 17 described later.
The air blowing unit 26 includes: a fan 261 and a motor 262 for driving the fan 261 to operate are disposed on the downstream side of the inlet 121 and the upstream side of the circulation outlet 122 and the ventilation outlet 114, i.e., between the inlet 121 and the circulation outlet 122 and the ventilation outlet 114. The operation state of the air blowing unit 26 is controlled by the electric components 238 in the circuit board box 23. The air blowing unit 26 draws indoor air into the housing 11 through the air inlet 121, and blows the air in the housing 11 to the circulation outlet 122 and/or the ventilation outlet 114.
The controlled component is a component connected to the electric component 238 in the circuit board case 23 and controlled by the electric component 238. Such as the air blowing unit 26, the heating unit 14, the switch plate driving device, and the like. The electrical component 238 sends commands to the controlled components to control the operation of the ventilation fan 10. For example, the electrical component 238 controls the operation of the air supply unit 26 to generate or stop the air flow from the air inlet 121 to the ventilation outlet 114 or the circulation outlet 122.
The snail shell 13 is disposed in the inner space of the frame 11 and guides air flowing from the air inlet to the air outlet 114. The snail shell 13 comprises: scroll plate 133, and snail shell front face plate 131 and snail shell back face plate 132 sandwiching scroll plate 133. The snail shell front panel 131 and snail shell back panel 132 sandwich the scroll plate 133 therebetween to form the snail shell 13.
The scroll plate 133 is a curved plate that expands the air passage in the snail case 13 in the rotation direction of the air blowing unit 26 on the outer periphery of the air blowing unit 26. That is, the scroll plate 133 of the present embodiment is a curved surface which is provided on the outer periphery of the air blowing unit 26 and extends in the circumferential direction of the air blowing unit 26, thereby expanding the air passage in the snail shell 13.
The snail shell front panel 131 is disposed opposite to the bottom opening 113 of the frame 11, and when the ventilator 10 is in the installation state, the snail shell front panel 131 is located on the side of the vortex plate 133 facing the indoor ground, parallel to the indoor ground, and perpendicular to the vortex plate 133.
The snail shell back plate 132 is disposed opposite to the snail shell front plate 131, and when the ventilator 10 is in an installation state, the snail shell back plate 132 is located on a side of the scroll plate 133 away from the indoor ground, parallel to the indoor ground, and perpendicular to the scroll plate 133.
The snail shell back panel 132 and the top wall 111 of the frame 11 may be two separate panels, but in this embodiment, the top wall 111 of the frame 11 directly functions as the snail shell back panel 132, that is, the top wall 111 of the frame is also the snail shell back panel 132 at the same time, and there is no need to additionally arrange the snail shell back panel 132 on the snail shell 13, so as to reduce the height of the snail shell 13, so that the frame 11 for accommodating the snail shell 13 can be arranged thinner, so that the ventilation fan 10 can adapt to more installation environments, for example, the ventilation fan 10 can be installed even if the distance between the ceiling and the roof is shorter.
The terms "upstream" and "downstream" in the present embodiment will be described below. When the air supply unit 26 is operated, an air flow from the air inlet 121 to the circulation outlet 122 or the ventilation outlet 114 is formed in the frame 11. "upstream direction" means the direction opposite to the direction of the gas flow; "downstream direction" refers to the direction of airflow. "upstream side" means a side located in the upstream direction; "downstream side" means the side located in the downstream direction. "upstream end" means an end located in the upstream direction; "downstream end" refers to the end that is located in the downstream direction.
The heating unit 14 is disposed in the housing 11, and is located on the downstream side of the blowing unit 26 and the upstream side of the circulation outlet 122, that is, between the blowing unit 26 and the circulation outlet 122. In this embodiment, the heating unit 14 is disposed on a side closer to the circulation outlet 122 than the blowing unit 26. The heating unit 14 is used for heating the air blown to the circulating outlet 122 by the blowing unit 26, and can increase the temperature of the air sent into the room through the circulating outlet 122. The present embodiment does not limit the type of the heating unit 14, and may be a heating member such as a PTC heater, for example.
As shown in fig. 1, the circulation air duct 15 is provided in the housing 11, and communicates the air inlet 121 and the circulation air outlet 122, and the air inlet 121, the air blowing unit 26, the heating unit 14, and the circulation air outlet 122 are sequentially positioned in the circulation air duct 15. The circulation air duct 15 can guide indoor air from the air inlet 121 to the circulation air outlet 122. The indoor air is guided by the circulation air duct 15, passes through the air inlet 121, the air blowing unit 26, and the heating unit 14 in this order, and is finally blown into the room through the circulation air outlet 122.
As shown in fig. 1, ventilation air duct 16 is provided in frame 11, and communicates air inlet 121 and ventilation air outlet 114, and air inlet 121, air blowing unit 26, and ventilation air outlet 114 are located in ventilation air duct 16 in this order. The ventilation air duct 16 can guide indoor air from the air inlet 121 to the ventilation air outlet 114. The indoor air is guided by ventilation air duct 16, passes through air inlet 121 and air blowing unit 26 in this order, and is blown out to the outside through ventilation air outlet 114.
As shown in fig. 1, the switching plate 17 is plate-shaped, and is provided at a position between the ventilation outlet port 114 and the circulation outlet port 122 in the housing 11, and switches between the circulation air passage 15 and the ventilation air passage 16. The switching means that the switching plate 17 opens or closes the circulation air passage 15 or the ventilation air passage 16, and includes three modes:
1. and (3) ventilation mode: the switching plate 17 switches the circulation air duct 15 from the open state to the closed state, and switches the ventilation air duct 16 from the closed state to the open state.
2. Circulation mode: the switching plate 17 switches the circulation air duct 15 from the closed state to the open state, and switches the ventilation air duct 16 from the open state to the closed state.
3. Drying mode: the angle of the switching plate 17 is adjusted to open the circulation air duct 15 and the ventilation air duct 16, so that the circulation air duct 15 and the ventilation air duct 16 are neither fully opened nor fully closed.
And the switching plate driving device is used for driving the switching plate 17 to rotate. The switch board driving device of the present embodiment may employ a stepping motor, and the stepping motor is disposed near the switch board 17.
The circuit board case 23 is provided in the housing 11, and the electric components 238 are provided in the circuit board case 23. The electric component 238 is connected to and controls controlled components such as the air blowing unit 26, the heating unit 14, and the stepping motor.
In the ventilation fan 10 of the present embodiment, as shown in fig. 1, the air blowing unit 26 and the snail shell 13 are disposed at the middle position of the frame 11, and the circuit board box housing section 22 and the air outlet portion 33 are formed on both sides of the air blowing unit 26 and the snail shell 13, respectively.
The air outlet 33 is located on the side of the blower unit 26 and the snail shell 13 close to the circulation air outlet 122 and the ventilation air outlet 114, and the switching plate 17 and the heating unit 14 are also located on the air outlet 33. When the air supply unit 26 is operated, the formed air flow enters the air outlet part 33 from the snail shell air outlet 134. When the ventilator 10 is in the ventilation mode, the airflow is discharged from the air outlet 33 to the outside through the ventilation air outlet 114; when the ventilator 10 is in the circulation mode, the airflow is discharged from the air outlet portion 33 to the outside through the circulation air outlet 122; when the ventilation fan 10 is in the drying mode, a part of the airflow is discharged from the air outlet 33 through the ventilation air outlet 114, and another part of the airflow is discharged from the air outlet 33 through the circulation air outlet 122.
The circuit board box housing section 22 is a space having a certain size, is separated from the air outlet portion 33 by the snail shell 13, and is disposed at a position opposite to the air outlet portion 33. Namely, the circuit board box receiving section 22 is separated from the ventilation outlet 114 by the snail shell 13 and is disposed at a position opposite to the ventilation outlet 114. As shown in fig. 1, the board box housing section 22 houses a board box 23 and a lighting fixture 24. The circuit board case of the present embodiment is housed in the circuit board case housing section 22, and in addition to housing the circuit board case 23, a lighting device 24 (such as an LED lamp) may be provided on the bottom surface side of the circuit board case 23 in an extra space, and the lighting device 24 may be directly fixed to the inner surface of the face mask 12, that is, the surface of the face mask 12 facing the frame 11, so that light emitted from the lighting device 24 may be irradiated from the face mask 12 into the room, and the ventilation fan 10 may have a lighting function.
With the above-described configuration, in the ventilation fan 10 of the present embodiment, no matter the ventilation fan 10 is in the ventilation mode, the circulation mode, or the drying mode, the airflow is discharged from the ventilation outlet 114 after passing through the ventilation air duct 16, that is, the air inlet 121 and the air blowing unit 26; or simultaneously, the air passes through the circulation air duct 15, that is, the air inlet 121, the air blowing unit 26, and the heating unit 14, and is blown out from the circulation air outlet 122. Since the circuit board case housing section 22 is provided at a position opposite to the air outlet portion 33, that is, at a position always independent from the ventilation air duct 16 and the circulation air duct 15, apart from the air outlet portion 33, the snail shell 13 is provided, so that the steam in the air flow is suppressed from blowing into the circuit board case 23 in the circuit board case housing section 22 to some extent, the damage of the steam to the electric components 238 in the circuit board case 23 is avoided, and the safety of the ventilation fan 10 is improved.
In the ventilation fan 10 of the present embodiment, since the circuit board box housing section 22 and the air outlet portion 33 are provided at a distance from the snail shell 13, the length of the frame 11 is set to be relatively long, and thus the face mask 12 covering the bottom surface opening 113 needs to be set to be relatively long. The face mask 12 is typically made of a resin material, and the face mask 12 is relatively easily deformed if no treatment is applied to the face mask 12. In this embodiment, as shown in fig. 2, a card slot 124 and a bar-shaped metal strip 123 that is clipped into the card slot 124 are provided along the two long sides of the inner surface of the face mask 12, that is, the surface of the face mask 12 facing the frame 11 in the longitudinal direction. The deformation of the face mask 12 can be suppressed by the support of the metal strips 123 in the longitudinal direction of the face mask 12.
As shown in fig. 3, a partition plate 18 is further provided in the housing 11, and the partition plate 18 is located between the snail shell 13 and the circuit board box housing section 22. The partition plate 18 can further suppress the flow of air flowing through the ventilation air passage 16 or the circulation air passage 15 from flowing into the circuit board box housing section 22. The partition plate 18 is located between the snail shell 13 and the circuit board case accommodating section 22, that is, the partition plate 18 is located between the ventilation air passage 16 or the circulation air passage 15 and the circuit board case accommodating section 22, and functions to partition the ventilation air passage 16 or the circulation air passage 15 from the circuit board case accommodating section 22.
The partition plate 18 is provided with an opening 192 and an interference preventing opening 191. The opening 192 is used for the lead 25 of the electric component 238 and the controlled component in the circuit board box to pass through; the interference prevention opening 191 is an opening for preventing the partition plate 18 and the metal bar 123 from interfering with each other, avoiding the metal bar 123.
In the mounted state of the ventilation fan 10, the partition plate 18 extends to the two side walls 112 of the housing 11 opposite to each other at the two ends in the width direction of the housing 11, and extends to the top wall 111 of the housing 11 and the bottom surface 115 of the housing at the two ends in the height direction of the housing 11. That is, in the housing width direction, two ends of the partition plate 18 are connected to two side walls 112 in the housing length direction, respectively, and in the housing height direction, two ends of the partition plate 18 are connected to a top wall 111 and a bottom surface 115 of the housing 11, respectively. However, in actual production, due to manufacturing tolerances, if the partition plate 18 is manufactured in close contact with the two side walls 112 of the housing 11, there is a possibility that the partition plate 18 may interfere with the two side walls 112 of the housing 11. Therefore, an interference preventing gap of about 0.1 cm can be provided between the re-partition plate 18 and the two side walls 112 of the housing 11. With the above configuration, the worm case 13 and the circuit board case housing section 22 are separated by the partition plate 18 except for the interference preventing gap, the opening 192 of the partition plate 18, and the interference preventing opening 191, so that most of the space between the airflow in the ventilation air duct 16 and the circulation air duct 15 and the circuit board case housing section 22 is separated by the partition plate 18, whereby the partition plate 18 can maximally suppress the airflow from entering the circuit board case housing section 22, thereby maximally suppressing the steam from entering the circuit board case 23, and improving the safety of the ventilation fan 10.
In the present embodiment, the partition plate 18 may be parallel to the two side walls 112 of the frame 11 in the width direction and perpendicular to the top wall 111 of the frame 11, or may be inclined, where the partition plate 18 is not parallel to the two side walls 112 of the frame 11 in the width direction and has an included angle different from 90 degrees with the top wall 111 of the frame 11.
As shown in fig. 4, the partition plate 18 of the present embodiment includes: a first partition plate 19 and a second partition plate 20 connected to the first partition plate 19.
The first partition plate 19 and the scroll plate 133 of the snail shell 13 may be separate two pieces or may be integrally formed. In this embodiment, the first partition plate 19 is not independent from the snail shell 13, but is directly integrally formed on the snail shell 13, and the whirl plate 133 forms a part of the first partition plate 19. That is, a part of the first partition plate 19 serves as the scroll plate 133, and the scroll plate 133 serves to expand the air passage in the snail shell 13 and to partition the air passage from the board cassette housing section 22. The other portion of the first partition plate 19 than the scroll plate 133 functions to partition the air passage and the circuit board box housing section 22.
This can reduce the number of parts to simplify the structure, and reduce the space in the longitudinal direction of the frame 11 corresponding to the thickness of the partition plate 18 as compared with the case where the first partition plate 19 is provided separately from the snail shell 13, thereby reducing the size of the frame 11 in the longitudinal direction and achieving the miniaturization of the frame 11.
The first partition plate 19 is substantially in the shape of a rectangle with missing corners, and in the view of fig. 4, the left side edge of the first partition plate 19 is missing from the left half of the bottom edge, forming a rectangular shape with missing lower left corner. As shown in fig. 6, the second partition plate 20 includes: a partition 201 and a waterproof cover 202. The partition 201 is joined to the first partition plate 19, specifically, the partition 201 is substantially in the shape of "L", and the shape thereof matches the default shape of the lower left corner of the first partition plate 19, and the partition 201 is joined to the lower left corner of the first partition plate 19 so that the partition plate is substantially rectangular as a whole, and functions to partition the air passage and the circuit board box housing section 22.
As shown in fig. 4 and 5, the snail shell 13 of the present embodiment is integrally formed with a hollow lead wire housing base 21 extending from the partition plate 18 side to the ventilation outlet port 114 side. The lead wire housing base 21 extends from the end of the scroll plate 133 of the snail shell 13 on the side of the frame ceiling wall 111 toward the bottom opening 113. That is, the end of the scroll plate 133 on the housing top wall 111 side extends in the direction of the air outlet portion 33 (i.e., in the longitudinal direction of the housing 11) to form the lead wire housing base 21.
As shown in fig. 4 to 6, the waterproof cover 202 is a strip-shaped structure extending perpendicular to the partition 201. When the partition 201 is joined to the first partition plate 19, the waterproof cover 202 extends in the same direction as the lead wire housing base 21 and matches the shape of the lead wire housing base 21, and the waterproof cover 202 and the lead wire housing base 21 are engaged with each other. The lead wire housing base 21 is engaged with the waterproof cover 202 of the second partition board 20, whereby the housing space 32 independent of the ventilation air passage 16 and the circulation air passage 15 is formed from the circuit board box housing section 22 to the controlled member.
In the ventilation fan 10 of the present embodiment, the plurality of lead wires 25 connecting the electrical components 238 in the circuit board case 23 and the controlled components are drawn out from the circuit board case 23 and stored in the storage space 32, and therefore, the air flow of the ventilation air passage 16 and the circulation air passage 15 is blocked by the waterproof cover 202 of the lead wire storage base 21 and the second partition plate 20 and cannot contact the lead wires 25, thereby preventing electrical failure due to adhesion of water or steam to the lead wires 25 and improving the safety of the ventilation fan 10. That is, the partition portion 201 of the second partition plate 20 and the first partition plate 19 are joined to form a part of the partition plate, and the waterproof cover 202 of the second partition plate 20 is engaged with the lead housing base 21 to form the housing space 32. The lead 25 housed in the housing space 32 is not limited to all leads in the housing, and the lead to be housed in the housing space 32 may be selected as needed. For example, the lead wire connected to the blower unit 26 does not need to be housed in the housing space 32, because the blower unit 26 is located near the board cassette housing section 22, and the lead wire of the blower unit 26 may be connected to the electrical component 238 after passing through the first connection box 231 described later.
In the present embodiment, as shown in fig. 5 and 6, the double ribs 215 and 203 are provided on the outer edge of the lead wire housing base 21 and the outer edge of the waterproof cover 202, respectively, which is the edge on the side away from the air blowing unit 26. The partition 201 is connected to the first partition plate 19 by a screw or a snap-fit structure, and the double rib 203 of the waterproof cover 202 and the double rib 215 of the lead housing base 21 are sandwiched between each other, and the waterproof cover 202 is fixed to the lead housing base 21 by a screw or a snap-fit structure, thereby connecting the lead housing base 21 and the waterproof cover 202. In this way, the blocking of the total of the quadruple ribs can prevent water or steam from entering the housing space 32 through the gap between the lead housing base 21 and the waterproof cover 202, thereby further improving the safety of the ventilation fan 10.
The above is merely an exemplary description, and the present embodiment is not limited thereto. The outer edge of the lead wire housing base 21 and the outer edge of the waterproof cover 202 may be provided with other types of sealing members instead of the double ribs 215, 203. The present embodiment is not limited to the type of the sealing member, and may be various sealing members such as a rubber strip, a sponge, and the like. The partition 201 and the first partition plate 19, the waterproof cover 202 and the lead wire housing base 21 may be connected by any fixing structure other than a screw and a snap structure.
As shown in fig. 7, the plurality of leads 25 connecting the electric component 238 and the plurality of controlled components are drawn out from the side wall of the circuit board case 23, enter the housing space 32 through the side wall of the housing space 32, are drawn out from the other side wall of the housing space 32, and are connected to the controlled components. The side wall of the storage space 32 is a wall surface of the lead storage base 21 facing the circuit board case storage section 22, and the other side wall of the storage space 32 is a wall surface of the lead storage base 21 facing the air outlet portion 33.
The lead 25 is pulled out from the circuit board case 23 in an inclined state that is not parallel to the top and bottom surfaces of the circuit board case 23 but extends at an angle to the top and bottom surfaces of the circuit board case 23 in a direction from the top surface to the bottom surface of the circuit board case 23, that is, the lead 25 is pulled out from the top surface side to the bottom surface side as it goes from the inside to the outside of the side wall of the circuit board case 23.
The lead 25 pulled out from the circuit board case 23 in an inclined state is pulled into the housing space 32 in an inclined state which is not parallel to the top and bottom surfaces of the housing space 32 but forms a certain angle with the top and bottom surfaces of the housing space 32 and extends in a direction from the bottom surface to the top surface of the housing space 32, that is, is pulled in from the bottom surface side to the top surface side as it goes from the outside to the inside of the side wall of the housing space 32.
That is, in the mounted state of the ventilation fan 10, the lead 25 is drawn out from the circuit board case 23 in a state of being inclined downward, and is drawn into the housing space 32 in a state of being inclined upward. In this way, the portion of the lead 25 located outside the circuit board case 23 and outside the storage space 32 is formed in a "V" shape, that is, the portion of the lead 25 located between the circuit board case 23 and the storage space 32 is low in the middle and high at both ends, so that even if steam adheres to the portion of the lead 25 located outside the circuit board case 23 and outside the storage space 32 and condenses into water droplets, the water droplets can drip downward along the middle of the "V" shape of the lead 25 and do not flow into the circuit board case 23 or the storage space 32, damage to the electrical components 238 in the circuit board case 23 and the lead in the storage space 32 is avoided, and safety of the ventilation fan 10 is further improved.
In the present embodiment, in order to form the lead 25 into a "V" shape, that is, in order to draw out the lead 25 from the top surface side to the bottom surface side as the lead advances from the inside to the outside of the side wall of the board case 23, a draw-out hole for drawing out the lead 25 is provided in the board case 23. The pull-out hole includes: a cartridge interior opening 236 and a cartridge exterior opening 235. The case inside opening 236 is provided on the side of the inside space of the circuit board case 23, and the case outside opening 235 is provided on the circuit board case 23 and exposed to the outside. The cartridge external opening 235 is located closer to the bottom surface side than the cartridge internal opening 236, that is, the cartridge external opening 235 is located lower than the cartridge internal opening 236 in the mounted state of the ventilation fan 10. The lower position means closer to the floor in the room and further from the top wall 111 of the frame 11. Thus, the lead 25 in the circuit board case 23 passes through the case inside opening 236 and then passes through the case outside opening 235, and with the positioning of the case inside opening 236 and the case outside opening 235, the lead 25 can be pulled out from the top surface side to the bottom surface side as it goes from the inside to the outside of the side wall of the circuit board case 23, so that the lead 25 is pulled out from the circuit board case 23 in a state of being inclined downward.
On the other hand, in order to form the lead 25 into a "V" shape, that is, in order to draw the lead 25 from the bottom surface side to the top surface side as it advances from the outside to the inside of the sidewall of the housing space 32, a draw-in hole for drawing in the lead 25 is provided in the housing space 32. The pull-in hole includes: receiving outer opening 212 and receiving inner opening 213. The housing external opening 212 is located in an external space of the housing space 32, and the housing external opening 212 is provided on a wall surface of the lead housing base 21 facing the board cassette housing section 22 and is located closer to the top surface side than the housing external opening 212. That is, in the mounted state of the ventilation fan 10, the position of the housing inner opening 213 is higher than the position of the housing outer opening 212. The higher position means closer to the frame top wall 111 and further away from the indoor floor. The lead 25 pulled out from the circuit board is pulled in from the bottom surface side to the top surface side as it goes forward from the outside to the inside of the side wall of the housing space 32 under the positioning of the housing external opening 212 and the housing internal opening 213 by passing through the housing external opening 212 and then passing through the housing internal opening 213, so that the lead 25 is pulled in the housing space 32 in an upwardly inclined state.
Further, a cartridge external opening 235 constituting a drawing hole is provided opposite to the housing external opening 212 constituting a drawing hole. Thus, the lead can be formed in a V-shape. The names of the drawing hole and the drawing hole are used herein for distinguishing different portions. It is not intended to limit the order in which the lead wire is inserted into the pull-in hole after being pulled out from the pull-out hole. That is, when the lead is actually disposed, the lead may be pulled out from the pull-in hole and then inserted into the pull-out hole without any problem.
Even if partition plate 18 separates ventilation air duct 16, circulation air duct 15, and circuit board box housing section 22, there is a possibility that steam may enter circuit board box housing section 22 through a gap between partition plate 18 and side wall 112 of frame 11 or top wall 111 of frame 11 or through opening 192 (opening) in partition plate 18, so in order to prevent steam in circuit board box housing section 22 from contacting electrical component 238 through the opening through which lead 25 passes, circuit board box 23 of the present embodiment includes: the first connection box 231 and the mounting box 232 are arranged in sequence along the length direction of the frame body, and the first connection box 231 and the mounting box 232 are arranged in sequence along the length direction of the frame body.
For convenience of explanation, fig. 8A and 8B are made with simple lines. Fig. 8A is a schematic cross-sectional view of the first connection box 231 of the present embodiment, and fig. 8B is a schematic cross-sectional view of a case where the lead 25 directly passes through the opening 27 of the side wall of the circuit board box without providing the first connection box 231, and then is connected to the electrical component 238.
As shown in fig. 7 to 10, the mounting box 232 is separated from the housing space 32, the first connection box 231 is disposed close to the housing space 32 and opposite to the housing space 32, and the pull-out hole is provided in the first connection box 231. An electric component 238 is provided in the mounting case 232, and the first connection case 231 partitions the mounting case 232 from the housing space 32.
Specifically, the first connection box 231 includes an outer sidewall 233 and an inner sidewall 234. The outer wall 233 is a side wall of the first connection box 231 facing the housing space 32, and the outer wall 233 is provided with a box outer opening 235. The inner side wall 234 is a side wall facing the mounting case 232, i.e., a side wall facing the outer side wall 233, and the inner side wall 234 is provided with a case inner opening 236. A first cartridge exhaust port 237 for exhausting steam outside the first connection cartridge 231 is provided on the top surface of the first connection cartridge 231; the top wall 111 of the frame body is provided with a first frame body exhaust port 116 provided corresponding to the first cartridge exhaust port 237 for exhausting the steam exhausted from the first cartridge exhaust port 237 to the outside of the frame body 11. Thus, even if steam enters the first connection cartridge 231 through the cartridge outer opening 235, the steam flows upward to the first cartridge exhaust port 237 and is discharged to the outside of the first connection cartridge 231 through the first cartridge exhaust port 237, and is then discharged to the outside of the housing through the first housing exhaust port 116 without entering the mounting cartridge 232 through the cartridge inner opening 236. Compared with the case where the first connection box 231 is not provided and the lead wires 25 are directly connected to the electrical components 238 through the openings 27 in the side wall of the circuit board box, the first connection box 231 allows the steam to be discharged to the outside of the circuit board box 23, thereby preventing the steam from damaging the electrical components 238 in the mounting box 232.
In the present embodiment, a seal may also be provided at the cartridge inside opening 236 and the cartridge outside opening 235, reducing the gap between the lead wires 25 and the opening edge, thereby further suppressing steam damage to the electrical components 238. In this embodiment, the kind of the sealing member is not limited, and various members capable of achieving the sealing effect, such as a sponge, may be used.
Further, in the present embodiment, the lead 25 is disposed vertically below the lead portion inside the first connection box 231, avoiding the first box exhaust opening 237. This can be achieved by: projections of the cartridge internal opening 236 and the cartridge external opening 235 on the bottom surface of the first junction cartridge 231 are offset from projections of the first cartridge exhaust port 237 on the bottom surface of the first junction cartridge 231 in the frame width direction. That is, in the height direction of the frame body 11, the first cartridge exhaust port 237 and the portion of the lead 25 located in the first connection cartridge 231 are offset from each other, and are not located on the same straight line in the vertical direction. Thus, even if water drops into the first connection box 231 from the first box exhaust port 237, the water does not drop on the lead 25, thereby preventing the lead 25 from being damaged and further improving the safety of the ventilation fan 10.
In this embodiment, a drain hole may be further provided on a bottom surface of the first connection box 231, so that water dropped into the first connection box 231 may flow to the outside of the first connection box 231 through the drain hole. The position of the drainage hole of the present embodiment may correspond to the position of the first box exhaust port 237, that is, the projection of the first box exhaust port 237 on the bottom surface of the first connection box 231 coincides with the drainage hole, so that water can be directly drained from the drainage hole after dropping from the first box exhaust port 237 into the first connection box 231, and thus the water does not pool in the first connection box 231, and the safety of the ventilation fan 10 is further improved.
The storage space 32 further includes a second connection box 211, the second connection box 211 is located at an end of the storage space 32 close to the circuit board box storage section 22, and is disposed opposite to the circuit board box 23, and the second connection box 211 is provided with the above-described drawing hole. Specifically, the second connection box 211 includes: the outer side wall is a side wall where the second connection box 211 and the circuit board box 23 are opposite, and the outer side wall is provided with an accommodating external opening 212. The inner side wall is a side wall opposite to the outer side wall, and the inner side wall is provided with an accommodating inner opening 213.
In this embodiment, a second box outlet port 214 for discharging steam to the outside of the second connection box 211 is provided on the top surface of the second connection box 211, and a second frame outlet port 117 corresponding to the second box outlet port 214 is provided on the top wall 111 of the frame. In this way, even if steam enters the second connection box 211 through the housing outer opening 212, the steam flows upward to the second box exhaust port 214, is discharged to the outside of the second connection box 211 through the second box exhaust port 214, and is then discharged to the outside of the housing through the second housing exhaust port 117 without entering the housing space 32 through the housing inner opening 213. Compared to the case where the second connection box 211 is not provided and the lead wires 25 directly pass through the openings of the side walls of the accommodation space 32, the second connection box 211 can discharge the steam to the outside of the accommodation space 32, thereby suppressing the adhesion of water or steam to the lead wires 25 to cause electrical failure.
Also in the present embodiment, a seal may be provided at the housing inner opening 213 and the housing outer opening 212 to reduce the gap between the lead wire 25 and the opening edge portion, thereby further suppressing steam damage to the lead wire 25. In this embodiment, the kind of the sealing member is not limited, and various members capable of achieving the sealing effect, such as a sponge, may be used.
Further, in the present embodiment, the lead 25 is disposed vertically below the lead portion located in the second connection box 211 avoiding the second box air outlet 214. This can be achieved by: projections of the housing inner opening 213 and the housing outer opening 212 on the bottom surface of the second junction box 211 are shifted in the width direction of the housing 11 from projections of the second box exhaust port 214 on the bottom surface of the second junction box 211. That is, in the height direction of the frame body 11, the second box air outlet 214 and the portion of the lead 25 located inside the second connection box 211 are offset from each other, and are not located on the same straight line in the vertical direction. Thus, even if water drops into the second connection box 211 from the second box exhaust port 214, the water does not drop onto the lead 25, thereby preventing electrical failure due to adhesion of water or steam onto the lead 25, and further improving the safety of the ventilation fan 10.
In this embodiment, a drain hole may be further provided on the bottom surface of the second connection box 211, so that water dropped into the second connection box 211 may flow to the outside of the second connection box 211 through the drain hole. The position of the drain hole in this embodiment may correspond to the position of the second box exhaust port 214, that is, the projection of the second box exhaust port 214 on the bottom surface of the second connection box 211 coincides with the drain hole, so that water may be directly discharged from the drain hole after dropping from the second box exhaust port 214 into the second connection box 211, and thus may not be deposited in the second connection box 211, further improving the safety of the ventilation fan 10.
Up to this point, the present embodiment has been described in detail with reference to the accompanying drawings. From the above description, those skilled in the art should have a clear understanding of the present invention.
It is to be noted that, in the attached drawings or in the description, the implementation modes not shown or described are all the modes known by the ordinary skilled person in the field of technology, and are not described in detail. In addition, the above definitions of the various elements are not limited to the specific structures, shapes or modes mentioned in the embodiments, and those skilled in the art may easily modify or replace them, for example:
(1) directional phrases used in the embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., refer only to the orientation of the drawings and are not intended to limit the scope of the present invention;
(2) the embodiments described above may be mixed and matched with each other or with other embodiments based on design and reliability considerations, i.e. technical features in different embodiments may be freely combined to form further embodiments.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (14)
1. A ventilation fan, comprising:
a frame body forming the outline,
An air inlet for sucking air into the frame,
A ventilation air outlet for discharging air outside the frame body,
A ventilation air path for communicating the air inlet and the ventilation air outlet,
A snail shell which guides the air from the air inlet to the air exchange air outlet,
It is characterized by also comprising:
a circuit board box accommodating section which is separated from the ventilation air outlet by the snail shell and is arranged at the position opposite to the ventilation air outlet,
A circuit board box disposed in the circuit board box accommodating section and accommodating electric components for controlling the controlled component,
And a partition plate for partitioning the ventilation air path and the circuit board box housing section and for suppressing the air flowing through the ventilation air path from flowing into the circuit board box housing section.
2. The ventilator according to claim 1, characterized in that:
in the installation state of the ventilation fan, two ends of the partition plate in the width direction of the frame body respectively extend to 2 opposite side walls of the frame body;
two ends of the partition board in the height direction of the frame body extend to the top wall of the frame body and the bottom surface of the frame body respectively.
3. The ventilator according to claim 1, characterized in that:
also comprises an air supply unit for forming air flow from the air inlet to the ventilation air outlet,
the snail shell comprises:
a scroll plate which is a curved plate that enlarges the wind path in the snail shell along the rotation direction of the air supply unit at the periphery of the air supply unit,
A snail shell front panel arranged opposite to the bottom opening of the frame body and a snail shell back panel arranged opposite to the snail shell front panel;
the partition plate includes a first partition plate and a second partition plate connected to the first partition plate,
the scroll plate forms a part of the first partition plate.
4. The ventilator according to claim 3, characterized in that:
a hollow lead wire receiving base extending from the partition plate side to the ventilation air outlet side is integrally formed on the snail shell,
and a storage space which is independent from the ventilation air path and is arranged between the circuit board box storage section and a controlled component connected with the electric component in the circuit board box is formed by clamping the lead storage base and the second partition board.
5. The ventilator according to claim 4, characterized in that:
the second partition plate is connected to the first partition plate to form a part of the partition plate, and is engaged with the lead storage base to form a waterproof cover of the storage space.
6. The ventilator according to claim 5, characterized in that:
the electric component and the controlled component are connected through a lead,
the lead wire is pulled out from the top surface side to the bottom surface side as it goes from the inside to the outside of the side wall of the circuit board box;
the side wall of the storage space is drawn from the bottom surface side to the top surface side as the side wall advances from the outside to the inside.
7. The ventilator according to claim 6, characterized in that:
the circuit board case has a drawing hole for drawing the lead wire,
the housing space has a drawing hole for drawing the lead,
the draw-out hole includes a box inner opening provided on the side of the inner space of the circuit board box and a box outer opening closer to the bottom surface side than the box inner opening,
the pull-in hole includes a housing outer opening provided on an outer space side of the housing space and a housing inner opening closer to a top surface side than the housing outer opening.
8. The ventilator according to claim 7, characterized in that:
double ribs are arranged at the edge of the lead wire receiving base and the edge of the waterproof cover,
the double ribs at the edge of the lead storage base and the double ribs at the edge of the waterproof cover are mutually clamped to connect the lead storage base and the waterproof cover.
9. The ventilator according to claim 7, characterized in that:
the circuit board box is provided with a first connecting box which is arranged opposite to the containing space,
the first connection box has the drawing hole,
A first box exhaust port for exhausting steam to the outside of the first connection box is formed in the top surface of the first connection box;
and a first frame body air outlet corresponding to the first box air outlet is arranged on the top surface of the frame body.
10. The ventilator according to claim 7, characterized in that:
the accommodating space is provided with a second connecting box which is arranged opposite to the circuit board box,
the second connection box has the drawing hole,
A second box exhaust port for exhausting steam to the outside of the second connection box is formed in the top surface of the second connection box;
and a second frame body air outlet corresponding to the second box air outlet is arranged on the top surface of the frame body.
11. The ventilator according to claim 9, characterized in that: the lead portion of the lead located in the first connection box is disposed so as to avoid a vertical lower portion of the first box exhaust port.
12. The ventilator according to claim 10, characterized in that: the lead part of the lead wire in the second connecting box is arranged under the vertical position of the air outlet of the second box in a avoiding mode.
13. The ventilator according to claim 12, characterized in that:
the ventilator further comprises:
a mask for covering the bottom opening of the frame;
a circulating air outlet arranged at the position near the ventilation air outlet and used for blowing out air,
A heating unit located at the upstream side of the circulating air outlet,
the heating unit is connected to the electrical component through a lead wire housed in the housing space.
14. The ventilator according to claim 13, characterized in that:
the ventilator further comprises:
a circulating air path communicated with the air inlet and the circulating air outlet,
A switching plate for switching the circulation air path and the ventilation air path,
A switch plate driving device for driving the switch plate to rotate,
the switch board driving device is connected to the electrical component through a lead wire housed in the housing space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921075733.6U CN210425424U (en) | 2019-07-09 | 2019-07-09 | Ventilation fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921075733.6U CN210425424U (en) | 2019-07-09 | 2019-07-09 | Ventilation fan |
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| Publication Number | Publication Date |
|---|---|
| CN210425424U true CN210425424U (en) | 2020-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921075733.6U Active CN210425424U (en) | 2019-07-09 | 2019-07-09 | Ventilation fan |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022052472A1 (en) * | 2020-09-09 | 2022-03-17 | 广东松下环境系统有限公司 | Heating and ventilating device |
| WO2022227783A1 (en) * | 2021-04-30 | 2022-11-03 | 广东松下环境系统有限公司 | Ventilation apparatus |
| WO2022262304A1 (en) * | 2021-06-17 | 2022-12-22 | 广东松下环境系统有限公司 | Ventilation device |
-
2019
- 2019-07-09 CN CN201921075733.6U patent/CN210425424U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022052472A1 (en) * | 2020-09-09 | 2022-03-17 | 广东松下环境系统有限公司 | Heating and ventilating device |
| WO2022227783A1 (en) * | 2021-04-30 | 2022-11-03 | 广东松下环境系统有限公司 | Ventilation apparatus |
| WO2022262304A1 (en) * | 2021-06-17 | 2022-12-22 | 广东松下环境系统有限公司 | Ventilation device |
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