CN207261290U - Blower fan apparatus - Google Patents
Blower fan apparatus Download PDFInfo
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- CN207261290U CN207261290U CN201721315156.4U CN201721315156U CN207261290U CN 207261290 U CN207261290 U CN 207261290U CN 201721315156 U CN201721315156 U CN 201721315156U CN 207261290 U CN207261290 U CN 207261290U
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- connecting pin
- primary side
- electrically connected
- coupling device
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Abstract
A kind of blower fan apparatus includes a power sensor detecting circuit, a wind turbine and a draught fan control circuit.The power sensor detecting circuit is electrically connected to the detecting unit between the signal input part and the signal output part including a signal input part, a signal output part and one, which is suitable for the AC power that one alternating voltage of output is electrically connected via lamp source switch.The draught fan control circuit is electrically connected between the signal output part and the wind turbine of the power sensor detecting circuit.When the lamp source switching a to conducting state makes the detecting unit receive the alternating voltage, the alternating voltage is converted to an enabling signal by the detecting unit, and the enabling signal is exported to the draught fan control circuit via the signal output part, when the draught fan control circuit receives the enabling signal, the wind turbine is controlled to rotate.
Description
Technical field
A kind of blower fan apparatus is the utility model is related to, is filled more particularly to a kind of wind turbine for being used to be installed in an interior space
Put.
Background technology
When weather is more moist, the moisture of the interior space is generally also heavier, and moisture is not only easily caused in the interior space
Article grows bacterium, mouldy, more the user in space indoors can be caused not feel well, therefore, is common in the interior space
Wind turbine is installed, to promote air circulation.However, user after space is got in, still needs to specially open wind turbine, Cai Nengda
To the effect for promoting air circulation, therefore, the prior art, which still suffers from, uses upper inconvenience.
The content of the invention
The purpose of this utility model is to provide a kind of more convenient blower fan apparatus.
The utility model blower fan apparatus includes power sensor detecting circuit, wind turbine and draught fan control circuit.The electric power detecting electricity
Road includes signal input part, signal output part, and is electrically connected between the signal input part and the signal output part
Detecting unit, the signal input part are suitable for switching the AC power for being electrically connected output AC voltage, the detecting via lamp source
Unit has isolation coupling device, and the isolation coupling device has the primary side connecting pin for being electrically connected the signal input part,
And the signal output part is electrically connected, and the primary side connecting pin being isolated from each other with the primary side connecting pin.The wind turbine
Control circuit is electrically connected between the signal output part and the wind turbine of the power sensor detecting circuit.When the lamp source switchs
By operatively switching-on state, and the detecting unit is set to receive the alternating voltage via the signal input part
When, the alternating voltage is converted to enabling signal by the detecting unit, and by the enabling signal via the signal output
End output, when the draught fan control circuit receives the enabling signal, controls the wind turbine to the draught fan control circuit
Rotate.
In some embodiment aspects of blower fan apparatus described in the utility model, the isolation coupling device is isolation transformation
Device.
In some embodiment aspects of blower fan apparatus described in the utility model, the power sensor detecting circuit includes two signals
Input terminal.The detecting unit also has the first diode, first resistor device, filter condenser, and ground terminal.The isolation
Coupled apparatus has two primary side connecting pins, and two primary side connecting pins, defines two primary side connecting pins point
Not Wei the first primary side connecting pin, and second subprime side connecting pin, first diode has an anode tap, and in contrast to
The cathode terminal of the anode tap, the primary side connecting pin of the isolation coupling device are electrically connected the signal input
End, the first primary side connecting pin of the isolation coupling device are electrically connected the anode tap of first diode, institute
State second subprime side connecting pin and be electrically connected the ground terminal, the filter condenser is electrically connected to the signal output part and described
Between ground terminal, the first resistor device be electrically connected to the signal output part and first diode the cathode terminal it
Between.
In some embodiment aspects of blower fan apparatus described in the utility model, the isolation coupling device is photo-coupler.
In some embodiment aspects of blower fan apparatus described in the utility model, the power sensor detecting circuit includes two signals
Input terminal.The detecting unit also has second resistance device, 3rd resistor device, filter condenser, the second diode, and ground connection
End.The isolation coupling device has two primary side connecting pins, and two primary side connecting pins, defines two primary
Side connecting pin is respectively the first primary side connecting pin and the second primary side connecting pin, and defines two primary side connecting pins point
Not Wei the first primary side connecting pin and second subprime side connecting pin, second diode has anode tap, and in contrast to institute
The cathode terminal of anode tap is stated, the second resistance device is electrically connected to the first primary side connecting pin of the isolation coupling device
And between the signal input part one of which, the second primary side connecting pin of the isolation coupling device is directly electrically connected
In the signal input part wherein another one, the anode tap of second diode is electrically connected to second primary side and connects
End is connect, the cathode terminal of second diode is electrically connected to the first primary side connecting pin, the isolation coupling device
The first primary side connecting pin be electrically connected DC power supply to receive DC voltage, described the second of the isolation coupling device
Primary side connecting pin is directly electrically connected to the signal output part, and the 3rd resistor device is electrically connected to the second subprime side and connects
Connect between end and the ground terminal, when the isolation coupling device receives the alternating voltage via the signal input part,
And the alternating voltage is in make the first primary side connecting pin and the second primary side connecting pin turn on each other just half
Zhou Shi, the first primary side connecting pin and second subprime side connecting pin turn on each other.
In some embodiment aspects of blower fan apparatus described in the utility model, the isolation coupling device is relay.
In some embodiment aspects of blower fan apparatus described in the utility model, the power sensor detecting circuit includes two signals
Input terminal.The detecting unit also has the 4th resistor, filter condenser, and ground terminal.The isolation coupling device tool
There are two primary side connecting pins, and two primary side connecting pins, it is respectively for the first time to define two primary side connecting pins
Level side connecting pin, and second subprime side connecting pin, the primary side connecting pin of the isolation coupling device are electrically connected
The signal input part, the first primary side connecting pin of the isolation coupling device are directly electrically connected the signal output
End, the 4th resistor are electrically connected between DC power supply and the signal output part, and the filter condenser is electrically connected to
Between the signal output part and the ground terminal, the isolation coupling device receives the friendship via the signal input part
When galvanic electricity is pressed, the first primary side connecting pin and second subprime side connecting pin turn on each other.
In some embodiment aspects of blower fan apparatus described in the utility model, when the lamp source is switched by operatively by described
The switched on line state of conducting state, makes the detecting unit stop receiving the alternating voltage via the signal input part,
And make the draught fan control circuit stop from the detecting unit receive the enabling signal when, the draught fan control circuit to
When receiving the timing period that the enabling signal is started at up to self-stopping technology, the wind turbine is controlled to stop operating.
In some embodiment aspects of blower fan apparatus described in the utility model, the blower fan apparatus also includes electric heating machine, with
And the heater switch suitable for being electrically connected between the electric heating machine and the AC power, the electric heating machine are determined with the wind turbine
The position in the air passage that justice goes out is corresponding, and the electric heating machine in the heater switch by operatively switching to the conducting state
When, receive the alternating voltage via the heater switch and generate heat.
The beneficial effects of the utility model are：The power sensor detecting circuit of the blower fan apparatus is in receiving the friendship
When galvanic electricity is pressed, the alternating voltage can be converted to the enabling signal and exported to the draught fan control circuit, so that described
Draught fan control circuit controls the wind turbine to rotate when receiving the enabling signal, be additionally, since the power sensor detecting circuit
The detecting unit has the isolation coupling device, and causes between two signal input parts and the signal output part
Complete electrical isolation is formed, even if exception occurs in the AC power, the draught fan control circuit is less vulnerable to abnormal electric
The infringement of pressure or electric current, and the interference resistant ability and security of the power sensor detecting circuit greatly improved.
Brief description of the drawings
Fig. 1 is a block schematic diagram of a first embodiment of the utility model blower fan apparatus；
Fig. 2 is a circuit diagram, illustrates a power sensor detecting circuit of the first embodiment；
Fig. 3 is a circuit diagram, illustrates a power sensor detecting circuit of a second embodiment of the utility model blower fan apparatus；And
Fig. 4 is a circuit diagram, illustrates a power sensor detecting circuit of a 3rd embodiment of the utility model blower fan apparatus.
Embodiment
The utility model is described in detail with reference to the accompanying drawings and embodiments.
Before the utility model is described in detail, it shall be noted that in the following description content, similar device be with
It is identically numbered to represent.
Refering to Fig. 1 and Fig. 2, a first embodiment of the utility model blower fan apparatus 1 is for example suitable for being installed in an Interior Space
Between in, to promote the air circulation in the interior space.
In the present embodiment, lamp source switch 51 and an electric light 52, and the electricity are for example previously provided with the interior space
Lamp 52 is electrically connected to an AC power V via lamp source switch 51AC, AC power VACIt can be for example and constantly export alternating current
(English is Commercial Power), that is, the alternating voltage that virtual value is 110 volts is constantly exported, but not with this
It is limited.
Lamp source switch 51 can be by operatively switching, when the lamp source switchs 51 between a conducting state and an open-circuit condition
During in the conducting state, the electric light 52 is from AC power VACReceive the alternating voltage and shine, and when the lamp source switchs
51 when being in the open-circuit condition, and the electric light 52 is not from AC power VACThe alternating voltage is received without shining.
The blower fan apparatus 1 of the present embodiment includes a power sensor detecting circuit 11, a wind turbine 12, one is electrically connected to the power supply and detects
Draught fan control circuit 13, a heater switch 14 between slowdown monitoring circuit 11 and the wind turbine 12, and an electric heating machine 15.
The power sensor detecting circuit 11 is electrically connected the wind including binary signal input terminal 111 (one of which is only shown in Fig. 1), one
The signal output part 112 of machine control circuit 13, and one be electrically connected to the signal input part 111 and the signal output part 112 it
Between detecting unit 113.As shown in Fig. 2, the one of which of the binary signal input terminal 111 is suitable for being electrically connected via lamp source switch 51
Meet AC power VACWherein one end, and the other one of the binary signal input terminal 111 then be suitable for directly be electrically connected the exchange
Power supply VACOther end, that is to say, that the lamp source switch 51 and AC power VACIt is to be connected in series in binary signal input
Between end 111.Therefore, when lamp source switch 51 is in the conducting state, the detecting unit 113 is via the binary signal input terminal
111 and AC power VACCurrent loop is formed, and as the electric light 52 is usually from AC power VACReceive the alternating current
Pressure.When the detecting unit 113 receives the alternating voltage via the signal input part 111, which hands over this
Galvanic electricity pressure is converted to an enabling signal, and the enabling signal is exported to the draught fan control circuit via the signal output part 112
13, in the present embodiment, which may be, for example, the high state voltage of a direct current, and the magnitude of voltage of the high state voltage can be such as
For 5 volts, but it is not limited thereto.
When the draught fan control circuit 13 receives the enabling signal from the power sensor detecting circuit 11, the draught fan control circuit
13 control the wind turbine 12 to rotate.Specifically, since the power sensor detecting circuit 11 and the electric light 52 are electrically connected to the identical lamp
Source switch 51, therefore, when the lamp source switch 51 by operatively the conducting state is switched to by the open-circuit condition when, the electric light 52 with
The wind turbine 12 can all start, consequently, it is possible to user, once electric light 52 is opened, which can also rotate therewith, and significantly
Add the blower fan apparatus 1 and use upper convenience.
The detecting unit 113 has an isolation coupling device 114, one first diode D1, a first resistor device R1, a filter
Ripple capacitor Cf, and a ground terminal GND.The isolation coupling device 114 has two primary side connecting pin P1, and two with
The primary side connecting pin that the primary side connecting pin P1 is isolated from each other.For convenience of description, two primary side connections are defined herein
End respectively one first primary side connecting pin S1 ', an and second subprime side connecting pin S1 ".First diode D1 has one
Anode tap, and one in contrast to the anode tap cathode terminal.
In the present embodiment, which is an isolating transformer, but is not limited thereto.Further,
Two primary side connecting pin P1 of the isolation coupling device 114 are electrically connected the binary signal input terminal 111, the isolation coupling
First primary side connecting pin S1 ' of device 114 is electrically connected the anode tap of first diode D1, second subprime side connection
End S1 " is then electrically connected ground terminal GND.Filter condenser CfBe electrically connected to the signal output part 112 and ground terminal GND it
Between.First resistor device R1 is then electrically connected between the cathode terminal of the signal output part 112 and first diode D1.
Specifically, in the present embodiment, which is a halfwave rectifier and filter circuit.When the lamp source
Switch 51 is in the conducting state, and the isolation coupling device 114 is received the alternating current via the signal input part 111
During pressure, the isolation coupling device 114 is by the alternating voltage from mapping to first primary side between the primary side connecting pin P1
Between connecting pin S1 ' and second subprime side connecting pin S1 ", and via the first diode D1 rectifications.Whereby, first level
A pulsating current is formed between side connecting pin S1 ' and second subprime side connecting pin S1 " to filter condenser CfCharging, and in
Filter condenser CfBoth ends between formed (namely between the signal output part 112 and ground terminal GND) startup letter
Number.Consequently, it is possible to which the draught fan control circuit 13 can receive the enabling signal via the signal output part 112, and then control the wind
Machine 12 rotates.
And when lamp source switch 51 by the conducting state by operatively the open-circuit condition is switched to, the detecting unit 113
Stop receiving the alternating voltage via the signal input part 111, and stop exporting the enabling signal to air-blower control electricity
Road 13.When the draught fan control circuit 13 stops receiving the enabling signal from the detecting unit 113, the draught fan control circuit 13
The wind turbine 12 can't be controlled to stop operating at once, but the timing period that the enabling signal starts at is received reaching a self-stopping technology
When, just control the wind turbine 12 to stop operating.In other words, after user closes electric light 52, which may proceed to rotation one
Just it is automatically stopped after the section time.
In the present embodiment, which is suitable for being electrically connected to the electric heating machine 15 and AC power VACBetween, should
Heater switch 14 is similar to lamp source switch 51, can be by operatively switching between the conducting state and the open-circuit condition.The electricity
Heat engine 15 is for example including a heat generating member, and the position in an air passage that the heat generating member is defined with the wind turbine 12 corresponds to each other,
Whereby, when the heater switch 14 is in the conducting state, the electric heating machine 15 is via the heater switch 14 from AC power VAC
Receive the alternating voltage so that the heat generating member generates heat.Also, since the heat generating member is corresponding with the position in the air passage, when
The heat generating member generate heat and the wind turbine 12 rotate when, the wind turbine 12 blown out it is distinguished and admirable can be heated up by the heat generating member, such one
Come, the interior space can be made to become warm.
Refering to Fig. 1 and Fig. 3, illustrated below for a second embodiment of the utility model blower fan apparatus 1.
The difference of second embodiment and first embodiment, is the detecting unit 113 of the power sensor detecting circuit 11.
As shown in figure 3, in the present embodiment, which has the isolation coupling device 114, ground terminal GND, the filtering
Capacitor Cf, a second resistance device R2, a 3rd resistor device R3, and one second diode D2.Similar to first embodiment,
The isolation coupling device 114 has two primary side connecting pin P1 (being shown in Fig. 2), first primary side connecting pin S1 ', and
Second subprime side connecting pin S1 ".For convenience of explanation, two primary side connections of this in this further defines the present embodiment
End P1 (being shown in Fig. 2) is respectively one first primary side connecting pin P1 ', and one second primary side connecting pin P1 ".
In the present embodiment, which is a photo-coupler.Second resistance device R2 be electrically connected to this every
From between first primary side connecting pin P1 ' and one of signal input part 111 of coupled apparatus 114.The isolating coupler
Second primary side connecting pin P1 " of part 114 is then directly to be electrically connected to another signal input part 111.Two or two pole
An anode tap of pipe D2 is electrically connected to second primary side connecting pin P1 ", and a cathode terminal of second diode D2 is then electrically connected
In first primary side connecting pin P1 '.First primary side connecting pin S1 ' of the isolation coupling device 114 is electrically connected a direct current
Power supply VCC, to receive a DC voltage.The second subprime side connecting pin S1 " of the isolation coupling device 114 is directly electrically connected to
The signal output part 112.3rd resistor device R3 is electrically connected between the second subprime side connecting pin S1 " and ground terminal GND.
Filter condenser CfIt is electrically connected between the signal output part 112 and ground terminal GND, in other words, filter condenser Cf
It is to be connected in parallel with 3rd resistor device R3.
Specifically, in the present embodiment, when the isolation coupling device 114 is received via the signal input part 111
The alternating voltage, and the alternating voltage be in make first primary side connecting pin P1 ' and second primary side connecting pin P1 " each other
During one positive half cycle of conducting, first primary side connecting pin S1 ' and second subprime side connecting pin S1 " are turned on each other so that should
Filter condenser CfReception comes from DC power supply VCCDC voltage, and in filter condenser CfBoth ends form startup letter
Number.
Refering to Fig. 1 and Fig. 4, illustrated below for a 3rd embodiment of the utility model blower fan apparatus 1.
The difference of 3rd embodiment and first embodiment, is the detecting unit 113 of the power sensor detecting circuit 11,
And the enabling signal.Specifically, in the present embodiment, which is a constant low state voltage, and the low state is electric
The magnitude of voltage of pressure is, for example, 0 volt.
As shown in figure 4, in the present embodiment, which has the isolation coupling device 114, the ground terminal
GND, filter condenser Cf, and one the 4th resistor R4.Similar to first embodiment, which has
There are two primary side connecting pin P1, first primary side connecting pin S1 ', and second subprime side connecting pin S1 ".
In the present embodiment, which is a relay.At the beginning of this two of the isolation coupling device 114
Level side connecting pin P1 is electrically connected the binary signal input terminal 111.The first primary side connecting pin of the isolation coupling device 114
S1 ' is directly electrically connected the signal output part 112, and the 4th resistor R4 is electrically connected to DC power supply VCCAnd the signal output
Between end 112.Filter condenser CfIt is electrically connected between the signal output part 112 and ground terminal GND.
Specifically, in the present embodiment, when the isolation coupling device 114 is received via the signal input part 111
During the alternating voltage, first primary side connecting pin S1 ' and second subprime side connecting pin S1 " are turned on each other, and cause the filter
Ripple capacitor CfThe magnitude of voltage at both ends is 0 volt, and forms the enabling signal.
In conclusion the power sensor detecting circuit 11 of the utility model blower fan apparatus 1 is when the alternating voltage is received, meeting
The alternating voltage is converted into the enabling signal and is exported to the draught fan control circuit 13, so that the draught fan control circuit 13 receives
The wind turbine 12 is controlled to rotate during to the enabling signal, the detecting unit 113 for being additionally, since the power sensor detecting circuit 11 has this
Isolation coupling device 114, and to be formed between the binary signal input terminal 111 and the signal output part 112 it is complete electrically every
From even if AC power VACThere is exception, which is less vulnerable to the infringement of abnormal voltage or electric current, and
The interference resistant ability and security of the power sensor detecting circuit 11 greatly improved, therefore the purpose of this utility model can be reached really.
Only as described above, be only the utility model embodiment, when cannot be limited with this utility model implement
Scope, every simple equivalent changes and modifications made according to the utility model claims and description, all still belongs to
In the range of the utility model is covered.
Claims (9)
- A kind of 1. blower fan apparatus, it is characterised in that：The blower fan apparatus includes：Power sensor detecting circuit, including signal input part, signal output part, and it is electrically connected to the signal input part and the letter Detecting unit between number output terminal, the signal input part are suitable for switching the exchange for being electrically connected output AC voltage via lamp source Power supply, the detecting unit have isolation coupling device, and the isolation coupling device, which has, is electrically connected the signal input part Primary side connecting pin, and the signal output part is electrically connected, and the primary side being isolated from each other with the primary side connecting pin connects Connect end；Wind turbine；AndDraught fan control circuit, is electrically connected between the signal output part and the wind turbine of the power sensor detecting circuit；When the lamp source is switched by operatively switching-on state, and the detecting unit is set to be connect via the signal input part When receiving the alternating voltage, the alternating voltage is converted to enabling signal by the detecting unit, and by the enabling signal Exported via the signal output part to the draught fan control circuit, when the draught fan control circuit receives the enabling signal When, control the wind turbine to rotate.
- 2. blower fan apparatus according to claim 1, it is characterised in that：The isolation coupling device is isolating transformer.
- 3. blower fan apparatus according to claim 2, it is characterised in that：The power sensor detecting circuit includes two signal input parts；The detecting unit also has the first diode, first resistor device, filter condenser, and ground terminal；AndThe isolation coupling device has two primary side connecting pins, and two primary side connecting pins, defines described two times Level side connecting pin is respectively the first primary side connecting pin, and second subprime side connecting pin, first diode have anode End, and the cathode terminal in contrast to the anode tap, the primary side connecting pin of the isolation coupling device are electrically connected The signal input part, the first primary side connecting pin of the isolation coupling device are electrically connected the institute of first diode Anode tap is stated, second subprime side connecting pin is electrically connected the ground terminal, and the filter condenser is electrically connected to the signal Between output terminal and the ground terminal, the first resistor device is electrically connected to the signal output part and first diode Between the cathode terminal.
- 4. blower fan apparatus according to claim 1, it is characterised in that：The isolation coupling device is photo-coupler.
- 5. blower fan apparatus according to claim 4, it is characterised in that：The power sensor detecting circuit includes two signal input parts；The detecting unit also has second resistance device, 3rd resistor device, filter condenser, the second diode, and ground terminal； AndThe isolation coupling device has two primary side connecting pins, and two primary side connecting pins, defines at the beginning of described two Level side connecting pin is respectively the first primary side connecting pin and the second primary side connecting pin, and defines two primary side connecting pins Respectively the first primary side connecting pin and second subprime side connecting pin, second diode have an anode tap, and in contrast to The cathode terminal of the anode tap, the second resistance device are electrically connected to first primary side connection of the isolation coupling device Between end and the signal input part one of which, the second primary side connecting pin of the isolation coupling device is directly electrically connected The signal input part wherein another one is connected to, the anode tap of second diode is electrically connected to second primary side Connecting pin, the cathode terminal of second diode are electrically connected to the first primary side connecting pin, the isolating coupler The first primary side connecting pin of part is electrically connected DC power supply to receive DC voltage, and described the of the isolation coupling device Secondary stage side connecting pin is directly electrically connected to the signal output part, and the 3rd resistor device is electrically connected to the second subprime side Between connecting pin and the ground terminal, when the isolation coupling device receives the alternating current via the signal input part Pressure, and the alternating voltage be in the first primary side connecting pin and the second primary side connecting pin is turned on each other just During half cycle, the first primary side connecting pin and second subprime side connecting pin turn on each other.
- 6. blower fan apparatus according to claim 1, it is characterised in that：The isolation coupling device is relay.
- 7. blower fan apparatus according to claim 6, it is characterised in that：The power sensor detecting circuit includes two signal input parts；The detecting unit also has the 4th resistor, filter condenser, and ground terminal；The isolation coupling device has two primary side connecting pins, and two primary side connecting pins, defines described two times Level side connecting pin is respectively the first primary side connecting pin, and second subprime side connecting pin, the isolation coupling device it is described Primary side connecting pin is electrically connected the signal input part, and the first primary side connecting pin of the isolation coupling device is straight Connect and be electrically connected the signal output part, the 4th resistor is electrically connected between DC power supply and the signal output part, institute State filter condenser to be electrically connected between the signal output part and the ground terminal, the isolation coupling device is via the letter When number input terminal receives the alternating voltage, the first primary side connecting pin and second subprime side connecting pin are led each other It is logical.
- 8. blower fan apparatus according to claim 1, it is characterised in that：When the lamp source is switched by operatively by the conducting The switched on line state of state, makes the detecting unit stop receiving the alternating voltage via the signal input part, and makes The draught fan control circuit stop from the detecting unit receive the enabling signal when, the draught fan control circuit reach from When stopping the timing period that the reception enabling signal is started at, the wind turbine is controlled to stop operating.
- 9. blower fan apparatus according to claim 1, it is characterised in that：The blower fan apparatus also includes electric heating machine, Yi Jishi In the heater switch being electrically connected between the electric heating machine and the AC power, the electric heating machine is defined with the wind turbine Air passage position it is corresponding, and the electric heating machine is when the heater switch is by operatively the conducting state is switched to, warp The alternating voltage is received by the heater switch and is generated heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721315156.4U CN207261290U (en) | 2017-10-12 | 2017-10-12 | Blower fan apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721315156.4U CN207261290U (en) | 2017-10-12 | 2017-10-12 | Blower fan apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207261290U true CN207261290U (en) | 2018-04-20 |
Family
ID=61917238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721315156.4U Active CN207261290U (en) | 2017-10-12 | 2017-10-12 | Blower fan apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207261290U (en) |
-
2017
- 2017-10-12 CN CN201721315156.4U patent/CN207261290U/en active Active
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