CN109386491B - Intelligent ventilator - Google Patents
Intelligent ventilator Download PDFInfo
- Publication number
- CN109386491B CN109386491B CN201811567905.1A CN201811567905A CN109386491B CN 109386491 B CN109386491 B CN 109386491B CN 201811567905 A CN201811567905 A CN 201811567905A CN 109386491 B CN109386491 B CN 109386491B
- Authority
- CN
- China
- Prior art keywords
- module
- switch
- monitoring module
- air quality
- plc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012544 monitoring process Methods 0.000 claims abstract description 62
- 239000002341 toxic gas Substances 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 8
- 241000883990 Flabellum Species 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000009423 ventilation Methods 0.000 description 15
- 238000001514 detection method Methods 0.000 description 8
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000007791 dehumidification Methods 0.000 description 1
- 238000001784 detoxification Methods 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/311—Air humidity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2270/00—Control
- F05D2270/30—Control parameters, e.g. input parameters
- F05D2270/313—Air temperature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
Abstract
The invention provides an intelligent ventilator which comprises a power supply module, a PLC module, an air quality monitoring module and a fan blade driving module, wherein the power supply module is used for providing electric energy for the PLC module, the air quality monitoring module and the fan blade driving module respectively, the air quality monitoring module is used for detecting the current indoor air quality and transmitting detected parameters to the PLC module, a first switch and a second switch are arranged on a power supply circuit, which is connected with the fan blade driving module, of the power supply module, the first switch is connected with the second switch in series, the second switch is a single-pole double-throw switch, the PLC module outputs a first signal to control the opening and closing of the first switch, and the PLC module outputs a second signal to control the closing direction of the second switch. The intelligent ventilator can be automatically opened and closed according to the current indoor environment and is used for replacing manual operation, so that electric energy is saved and indoor air is effectively purified.
Description
Technical Field
The invention relates to the field of ventilation fans, in particular to an intelligent ventilation fan.
Background
The ventilator is arranged indoors and is generally used for replacing indoor air, and has the functions of ventilation, dehumidification, detoxification and the like. The existing ventilator is usually required to be opened and closed manually, so that in real life, the waste of electric energy caused by forgetting to turn off the ventilator (or whether ventilation is required or not is also required to be started in days) often occurs, or the ventilator is turned off manually and prematurely (especially, when people enter, the ventilator is turned on, peculiar smell is not discharged and the ventilator is turned off, so that the indoor air is not effectively purified), most bathrooms are gas-type water heaters, and accidents of high carbon monoxide concentration and poisoning of body death occur annually, namely, the bathroom ventilator cannot automatically monitor and turn on ventilation. Therefore, it is necessary to invent an automatically openable and closable ventilator to replace manual operation, thereby making up the above-mentioned shortcomings.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides an intelligent ventilator which can be automatically opened and closed according to the current indoor environment and is used for replacing manual operation, so that electric energy is saved and indoor air is effectively purified.
The technical scheme adopted by the invention is as follows:
the utility model provides an intelligent ventilator, intelligent ventilator includes power module, PLC module, air quality monitoring module and flabellum drive module, power module does respectively PLC module, air quality monitoring module and flabellum drive module provide the electric energy, air quality monitoring module is used for detecting current indoor air quality and will detect the parameter transmission who obtains for the PLC module, power module connects be equipped with first switch and second switch on flabellum drive module's the power supply circuit, first switch with the second switch series connection, just, the second switch is established to single-pole double-throw switch, PLC module output first signal is in order to control the switching of first switch, PLC module output second signal is in order to control the closing direction of second switch.
Further, the PLC module is provided with a first signal output end, the first signal output end is connected with a first driving circuit, the first signal is transmitted to the first driving circuit through the first signal output end, and the first driving circuit is used for driving the first switch to be opened and closed.
Further, the PLC module is further provided with a second signal output end, the second signal output end is connected with a second driving circuit, a second signal is transmitted to the second driving circuit through the second signal output end, and the second driving circuit is used for driving the second switch to be closed and commutated.
Further, the first driving circuit and the second driving circuit are both set as electromagnetic relay driving circuits.
Further, the air quality monitoring module comprises one or more than two of a temperature monitoring module, a humidity monitoring module, a toxic gas monitoring module and an odor gas monitoring module.
Further, when the air quality monitoring module includes more than two kinds of monitoring modules, the PLC module is provided with a priority corresponding to the monitoring module in advance, and the PLC module preferentially executes the parameter detected by the monitoring module with higher priority.
Further, the power module further comprises a voltage reducing circuit, and the voltage reducing circuit is used for supplying power to the PLC module and the air quality monitoring module.
Further, the power module further comprises a step-down circuit, and the step-down circuit is used for supplying power to the PLC module, the air quality monitoring module, the first driving circuit and the second driving circuit.
The beneficial effects of the invention are as follows:
according to the intelligent ventilator, the parameter of the current indoor air quality is detected by the air quality monitoring module and is transmitted to the PLC module, the PLC module analyzes the parameter to obtain the current indoor air quality coefficient, and then outputs control signals, namely a first signal and a second signal, to respectively control the first switch and the second switch, so that the opening and closing of the intelligent ventilator and the ventilation direction are automatically controlled, manual operation can be replaced, and electric energy is saved, and indoor air is effectively purified.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate the invention and together with the description serve to explain the invention. In the drawings of which there are shown,
fig. 1: the embodiment of the invention provides a structural block diagram of an intelligent ventilator;
fig. 2: the embodiment of the invention discloses a structural block diagram of an air quality monitoring module of an intelligent ventilator;
fig. 3: the embodiment of the invention provides a circuit diagram of an intelligent ventilator.
Component names and reference numerals thereof
10. A fan blade driving module; 20. a power module; 30. a PLC module; 40. a gas quality monitoring module; 100. a step-down circuit; 200. a first driving circuit; 300. a second driving circuit; 400. a first switch; 500. a second switch; 401. a temperature monitoring module; 402. a humidity monitoring module; 403. a toxic gas monitoring module; 404. an odor gas monitoring module.
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
Referring to fig. 1-3, an embodiment of the present invention discloses an intelligent ventilator, the intelligent ventilator includes a power module 20, a PLC module 30, an air quality monitoring module 40 and a fan blade driving module 10, the power module 20 respectively provides electric energy for the PLC module 30, the air quality monitoring module 40 and the fan blade driving module 10, the air quality monitoring module 40 is used for detecting current indoor air quality and transmitting detected parameters to the PLC module 30, a power supply circuit of the power module 20 connected with the fan blade driving module 10 is provided with a first switch 400 and a second switch 500, the first switch 400 and the second switch 500 are connected in series, and the second switch 500 is configured as a single-pole double-throw switch, the PLC module 30 outputs a first signal to control the opening and closing of the first switch 400, and the PLC module 30 outputs a second signal to control the closing direction of the second switch 500.
The fan blade driving module 10 is used for driving the ventilator to work, the fan blade driving module 10 comprises a driving motor and a basic circuit, when the motor is electrified, the ventilator is driven to rotate by the rotation of the driving motor, and the driving motor also has forward rotation and reverse rotation functions, when the driving motor rotates forward, the ventilator is driven to work forward, and indoor air is discharged outwards by the ventilator; when the driving motor rotates reversely, the ventilator is driven to work reversely, and the ventilator discharges outside air into a room.
In this embodiment, the power supply circuit of the fan blade driving module 10 is provided with a first switch 400 and a second switch 500, and when the first switch 400 and the second switch 500 are both closed, the power supply circuit is turned on to supply power to the fan blade driving module 10. The second switch 500 is a single-pole double-throw switch, that is, the second switch 500 provides two electric connection positions where two circuits are conducted, one of the electric connection positions is forward conduction, and at this time, the second switch corresponds to forward rotation of the driving motor, and the ventilator works forward; the other power connection position is reverse conduction, and at the moment, the ventilator reversely works corresponding to the reverse rotation of the driving motor.
The ventilation fan of the invention utilizes the air quality monitoring module 40 to detect the current indoor air quality and transmits the detection parameter to the PLC module 30, the PLC module 30 carries out signal processing on the detected parameter to obtain the first signal information and the second signal information, and outputs the first signal and the second signal for controlling the working state of the ventilation fan. Therefore, the ventilation fan can intelligently and automatically control the ventilation mode and whether ventilation is performed or not according to the indoor air quality condition, wherein the ventilation mode comprises indoor ventilation or indoor and outdoor ventilation.
The PLC module 30 is provided with a first signal output end, the first signal output end is connected with a first driving circuit 200, the first signal is transmitted to the first driving circuit 200 through the first signal output end, and the first driving circuit 200 is used for driving the first switch 400 to be opened or closed.
The PLC module 30 is further provided with a second signal output end, the second signal output end is connected to a second driving circuit 300, the second signal is transmitted to the second driving circuit 300 through the second signal output end, and the second driving circuit 300 is used for driving the second switch 500 to perform closed commutation.
The first driving circuit 200 and the second driving circuit 300 are both set as electromagnetic relay driving circuits. The electromagnetic relay driving circuit comprises a base circuit and an electromagnetic relay arranged on the base circuit. When the first driving circuit 200 receives the first signal, the first driving circuit 200 is turned on, and the electromagnetic relay on the first driving circuit 200 is powered on to operate, thereby driving the first switch 400 to be turned on or off. Similarly, when the second driving circuit 300 receives one of the second signals, the second driving circuit 300 is turned on, and the electromagnetic relay on the second driving circuit 300 is powered on to operate, so as to drive the second switch 500 to be closed to one of the electrical connection positions or the other electrical connection position.
The air quality monitoring module 40 includes one or more of a temperature monitoring module 401, a humidity monitoring module 402, a toxic gas monitoring module 403, and an odor monitoring module 404. Wherein the temperature monitoring module 401 may be used to detect a current indoor temperature condition, such as a temperature sensor; the humidity monitoring module 402 may be configured to detect a current indoor dry humidity condition, such as a humidity sensor; the toxic gas monitoring module 403 may be configured to detect whether toxic gas exists in the current room, where the toxic gas includes CO, formaldehyde, benzene, etc., and it is understood that corresponding detecting devices are required to be set corresponding to the toxic gas to be detected; the odor monitoring module 404 may be configured to detect whether or not there is an odor in the room, where the odor includes ammonia, hydrogen, alcohol, cigarette smoke, and the like, and a corresponding detecting device is required to be set corresponding to the odor to be detected.
When the air quality monitoring module 40 includes more than two kinds of monitoring modules, the PLC module 30 is provided with a priority corresponding to the monitoring module in advance, and the PLC module 30 preferably executes the parameter detected by the monitoring module with higher priority. It should be noted that, for example, in one embodiment, the air quality monitoring module 40 includes a temperature monitoring module 401 and a toxic gas monitoring module 403, where the toxic gas monitoring module 403 is set as a CO detection sensor, and when the configured ventilator starts to work, it detects that the indoor temperature is too high, and at the same time, it also detects that the indoor temperature contains CO gas and the solubility is too high, and the indoor temperature is too high, the ventilator receives a reversal signal, and the ventilator exhausts indoor air, and exhausts air with a lower outdoor temperature into the room; the indoor CO gas is contained, and if the solubility is too high, the ventilator receives a forward rotation signal, and the ventilator exhausts the indoor CO gas to the outside; this causes a contradiction. Therefore, when designing the ventilator of this embodiment, a default priority is set for the two parameter signals, for example, the CO detection sensor is set to a higher priority and the temperature sensor is set to a lower priority, at this time, the ventilator will default to process the detection information of the CO detection sensor preferentially, so as to execute the signal command of the CO detection sensor, exhaust the air to the outside, and exhaust the CO gas in the room to the outside. It will be appreciated that when the ventilator is provided with more different kinds of detection sensors, the different kinds of detection sensors all detect simultaneously and automatically control sequentially in accordance with preset priorities.
In one embodiment, the power module 20 further includes a step-down circuit 100, and the step-down circuit 100 is configured to power the PLC module 30 and the air quality monitoring module 40. In this embodiment, the output voltage of the step-down circuit 100 is 5 v.
In another embodiment, the power module 20 further includes a step-down circuit 100, where the step-down circuit 100 is configured to supply power to the PLC module 30 and the air quality monitoring module 40, and the step-down circuit 100 is further configured to supply power to the first driving circuit 200 and the second driving circuit 300. In this embodiment, the output voltage of the step-down circuit 100 is 5 v.
In summary, according to the intelligent ventilator of the present invention, the parameter of the current indoor air quality detected by the air quality monitoring module 40 is transmitted to the PLC module 30, the PLC module 30 analyzes the parameter to obtain the current indoor air quality coefficient, and then outputs the control signals, i.e. the first signal and the second signal, to respectively control the first switch 400 and the second switch 500, so as to control the opening, closing and ventilation direction of the intelligent ventilator, and replace manual operation, thereby saving electric energy and effectively purifying indoor air.
Any combination of the various embodiments of the invention should be considered as being within the scope of the present disclosure, as long as the inventive concept is not violated; within the scope of the technical idea of the invention, any combination of various simple modifications and different embodiments of the technical proposal without departing from the inventive idea of the invention should be within the scope of the invention.
Claims (8)
1. The utility model provides an intelligent ventilator, its characterized in that, intelligent ventilator includes power module, PLC module, air quality monitoring module and flabellum drive module, power module does respectively PLC module, air quality monitoring module and flabellum drive module provide the electric energy, air quality monitoring module is used for detecting current indoor air quality and will detect the parameter transmission who obtains for the PLC module, power module connects be equipped with first switch and second switch on flabellum drive module's the power supply circuit, first switch with the second switch series connection, just, the second switch is established to single-pole double-throw switch, PLC module output first signal is in order to control the switching of first switch, PLC module output second signal is in order to control the closing direction of second switch.
2. The intelligent ventilator of claim 1, wherein the PLC module is provided with a first signal output end, the first signal output end is connected to a first driving circuit, the first signal is transmitted to the first driving circuit through the first signal output end, and the first driving circuit is used for driving the first switch to be opened or closed.
3. The intelligent ventilator of claim 2, wherein the PLC module is further provided with a second signal output end, the second signal output end is connected to a second driving circuit, the second signal is transmitted to the second driving circuit through the second signal output end, and the second driving circuit is used for driving the second switch to perform closed commutation.
4. A smart ventilator according to claim 3, wherein the first and second drive circuits are each provided as an electromagnetic relay drive circuit.
5. The intelligent ventilator of claim 1, wherein the air quality monitoring module comprises one or more of a temperature monitoring module, a humidity monitoring module, a toxic gas monitoring module, and an odorous gas monitoring module.
6. The intelligent ventilator of claim 5, wherein when the air quality monitoring module comprises more than two different types of monitoring modules, the PLC module is provided with a priority corresponding to the monitoring module, and the PLC module preferably executes the parameter detected by the monitoring module with higher priority.
7. The intelligent ventilator of claim 1, wherein the power module further comprises a step-down circuit for powering the PLC module, the air quality monitoring module.
8. The intelligent ventilator of claim 4, wherein the power module further comprises a step-down circuit for powering the PLC module, the air quality monitoring module, the first drive circuit, and the second drive circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811567905.1A CN109386491B (en) | 2018-12-21 | 2018-12-21 | Intelligent ventilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811567905.1A CN109386491B (en) | 2018-12-21 | 2018-12-21 | Intelligent ventilator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109386491A CN109386491A (en) | 2019-02-26 |
| CN109386491B true CN109386491B (en) | 2024-03-08 |
Family
ID=65430697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811567905.1A Active CN109386491B (en) | 2018-12-21 | 2018-12-21 | Intelligent ventilator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109386491B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0220944A1 (en) * | 1985-10-23 | 1987-05-06 | Tai-Her Yang | A fan with positive and reverse cyclic air flow stirring functions |
| US4689533A (en) * | 1985-10-25 | 1987-08-25 | Yang Tai Her | Controlled fan |
| CN201794805U (en) * | 2010-02-10 | 2011-04-13 | 浙江移动电气股份有限公司 | Ventilation fan with intelligent air quality detection device |
| CN205066055U (en) * | 2015-09-10 | 2016-03-02 | 深圳神族数码科技有限公司 | Intelligent ventilator |
| CN205807762U (en) * | 2016-07-18 | 2016-12-14 | 武汉科技大学 | A kind of bathroom illumination air exchange system |
| CN108278746A (en) * | 2018-01-24 | 2018-07-13 | 青海民族大学 | Cabin ventilator, system and method |
| CN209278191U (en) * | 2018-12-21 | 2019-08-20 | 熊鸿 | A kind of intelligent ventilating fan |
-
2018
- 2018-12-21 CN CN201811567905.1A patent/CN109386491B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0220944A1 (en) * | 1985-10-23 | 1987-05-06 | Tai-Her Yang | A fan with positive and reverse cyclic air flow stirring functions |
| US4689533A (en) * | 1985-10-25 | 1987-08-25 | Yang Tai Her | Controlled fan |
| CN201794805U (en) * | 2010-02-10 | 2011-04-13 | 浙江移动电气股份有限公司 | Ventilation fan with intelligent air quality detection device |
| CN205066055U (en) * | 2015-09-10 | 2016-03-02 | 深圳神族数码科技有限公司 | Intelligent ventilator |
| CN205807762U (en) * | 2016-07-18 | 2016-12-14 | 武汉科技大学 | A kind of bathroom illumination air exchange system |
| CN108278746A (en) * | 2018-01-24 | 2018-07-13 | 青海民族大学 | Cabin ventilator, system and method |
| CN209278191U (en) * | 2018-12-21 | 2019-08-20 | 熊鸿 | A kind of intelligent ventilating fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109386491A (en) | 2019-02-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201262010Y (en) | Intelligent window control device | |
| CN111795469B (en) | Sterilization control method of air conditioner with sterilization function and air conditioner | |
| JP2001317797A (en) | Adapter for automatically controlling power supply of air conditioner through sensor | |
| CN201450623U (en) | Power saving controller of intelligent classroom lighting | |
| CN102562634A (en) | Intelligent exhaust fan for washrooms | |
| CN109386491B (en) | Intelligent ventilator | |
| CN204845432U (en) | Vehicle air conditioner controller cuts out and awakens up controlling means with power supply time delay | |
| CN209278191U (en) | A kind of intelligent ventilating fan | |
| CN205351659U (en) | Self -adaptation air purifier controller | |
| CN201434993Y (en) | Intelligent window monitoring device | |
| CN110888368A (en) | Bathroom intelligence control system | |
| CN203397148U (en) | Automatic controller designed based on MCU | |
| CN2859602Y (en) | Control system of biology safety cabinet | |
| CN205259787U (en) | Automatic window closing device | |
| CN101696817B (en) | Intelligent controller of automobile air conditioner | |
| CN101614431B (en) | Control circuit of air conditioner | |
| CN204301240U (en) | Vehicle-mounted Double-power air conditioner system | |
| CN209539020U (en) | A kind of passive type automatic emergency transom for building | |
| CN202659542U (en) | Automatically-controlled ventilator | |
| CN202254128U (en) | Intelligent control system for air interchange | |
| CN201253367Y (en) | New indoor wind purification device with sensor linkage device | |
| CN207093425U (en) | A kind of intelligent exhaust fan for toilet | |
| CN201561527U (en) | Intelligent controller of automobile air conditioner | |
| KR100502067B1 (en) | Apparatus of auto open/close air-conditioner grill by air switch system | |
| CN210373939U (en) | Automatic exhaust fan of taking a breath |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |