CN204902122U - Ordinary fan control system that send - Google Patents
Ordinary fan control system that send Download PDFInfo
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- CN204902122U CN204902122U CN201520663954.0U CN201520663954U CN204902122U CN 204902122 U CN204902122 U CN 204902122U CN 201520663954 U CN201520663954 U CN 201520663954U CN 204902122 U CN204902122 U CN 204902122U
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- controller
- kitchen
- frequency converter
- pressure fan
- frequency
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- 238000007664 blowing Methods 0.000 description 9
- 239000003595 mist Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
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- Air Conditioning Control Device (AREA)
Abstract
The utility model relates to an ordinary fan control system that send, including installing ordinary forced draught blower, converter, controller, differential pressure sensor and the door magnetic switch in the kitchen, ordinary forced draught blower and controller all are connected with the converter, differential pressure sensor all is connected with the controller with the door magnetic switch, the controller for when judging that this pressure differential value is greater than or when being less than the default, open through the ordinary forced draught blower of converter control, and the frequency of adjusting the converter according to this pressure differential value, so that corresponding frequency work is pressed to ordinary forced draught blower. The utility model discloses a differential pressure sensor detects the switching that ordinary forced draught blower was controlled to the pressure differential value, need not utilize artifical manually operation, avoid forgetting unmanned the time close cause the wasting of resources etc. The emergence of the condition, the controller correspondingly changes the frequency of operation of converter according to the pressure differential value, ensures that pressure differential value in the kitchen at suitable within range, provides stable, comfortable environment for the kitchen.
Description
Technical field
The utility model relates to the common pressure fan in kitchen.
Background technology
Negative pressure operating mode is necessary in the kitchen of catering industry, general pressure difference is advisable about 5 to 10pa, except mist extractor demand in kitchen, also have various heat-producing device to need to carry out intermittent ventilation and heat or continuation ventilation and heat, require that indoor temperature must not higher than 30 degrees Celsius.Usually there is exhaust blower at kitchen indoor location, for outwardly discharged air, in order to circulate with outside air in kitchen, common pressure fan generally also can be installed outdoor air is provided.But current common pressure fan controls only by switch key, press switch, common pressure fan works on power, intellectualized operation can not be realized, and kitchen is different according to the period, the air circulation needed is also different, and the common blower system of prior art is not well positioned to meet the demand of kitchen all the period of time Automatic Control and adjustment.
Utility model content
For above-mentioned technical problem, the purpose of this utility model is to provide a kind of common pressure fan control system, and it can realize the various operating conditions occurred according to kitchen Different periods, automatically to blow operation control and regulation to the indoor realization in kitchen.
For achieving the above object, the utility model adopts following technical scheme:
Common pressure fan control system, comprises the common pressure fan, frequency converter, controller, differential pressure pickup and the door status switch that are installed in kitchen; Described common pressure fan is all connected with frequency converter with controller, and described differential pressure pickup is all connected with controller with door status switch; Described differential pressure pickup, for detecting the pressure difference between the indoor and outdoor of kitchen, and is sent to controller by the pressure difference detected; Described door status switch, for backstairs detected unlatching after send start signal to controller, control frequency converter in Preset Time still with current frequency operation to make controller; Described controller, for when determining this pressure difference and being greater than or less than preset value, is opened by the common pressure fan of Frequency Converter Control, and regulates the frequency of frequency converter according to this pressure difference, to make common pressure fan by corresponding frequency operation.
Preferably, the quantity of described differential pressure pickup is multiple.
Preferably, also comprise exhaust blower and the second frequency converter, described exhaust blower is connected with controller by the second frequency converter.
Preferred further, also comprise temperature sensor, described temperature sensor is connected with controller.
Compared to existing technology, the beneficial effects of the utility model are:
By differential pressure pickup, the utility model detects that pressure difference controls the opening and closing of common pressure fan, do not need to utilize manual hand manipulation, forget when avoiding unmanned close cause the wasting of resources etc. the generation of situation, controller correspondingly regulates the operating frequency of frequency converter according to pressure difference, guarantee that pressure difference in kitchen is in optimum range, provides stable, suitable dynamic environment to kitchen.
Accompanying drawing explanation
Fig. 1 is function structure chart of the present utility model;
Fig. 2 is mounting structure schematic diagram of the present utility model.
Detailed description of the invention
Below, by reference to the accompanying drawings and detailed description of the invention, the utility model is described further:
See Fig. 1 and Fig. 2, the common pressure fan control system that the utility model provides, comprises common pressure fan, frequency converter, controller, differential pressure pickup and door status switch; Common pressure fan configures multiple air outlet, and common pressure fan is all connected with frequency converter with controller, and differential pressure pickup is all connected with controller with door status switch; Common pressure fan is installed in kitchen, for kitchen provides required air quantity.The operation principle of differential pressure pickup is directly acted on the diaphragm of sensor by measuring pressure, diaphragm is made to produce the micrometric displacement be directly proportional to hydraulic pressure, the capacitance of sensor is changed, utilizes electronic circuit to detect this change, and change the canonical measure signal of an output corresponding pressure.Differential pressure pickup is for detecting the pressure difference between the indoor and outdoor of kitchen, and frequency converter and controller can be arranged in kitchen respectively, also can be installed on other positions outside kitchen according to actual conditions.
Differential pressure pickup sends this pressure difference to controller after pressure difference being detected, when this pressure difference is greater than or less than preset value, controller is opened by the common pressure fan of Frequency Converter Control and is run, and regulates the frequency of frequency converter according to this pressure difference, to make common pressure fan by corresponding frequency operation.After door status switch detects that backstairs is opened, send start signal to controller, and after controller receives this start signal, controller controls frequency converter in Preset Time still with current frequency operation.In general, the pressure difference starting common pressure fan work controls in the scope of 5-10pa, and kitchen room pressure will lower than the pressure of outdoor, kitchen.If the pressure difference that differential pressure pickup detects is less than 5pa, whether the operating frequency then reading the frequency converter of the exhaust blower in kitchen is equal to or less than 10%, if then common pressure fan is automatically controlled shutdown, otherwise just continue to run, until when pressure difference is less than 3pa, the controlled stop machine of common pressure fan, once after common pressure fan shutdown, when kitchen pressure difference equals 10pa, then common pressure fan is controlled to start again, and start with the synchronizing frequency that rises of 10hz, the air output of motor is is progressively increased and decreased again with the stepping of every 1hz/3s, until after reaching the negative pressure value scope of permission, realize air-supply air draft and be in dynamic equilibrium condition.The quantity of differential pressure pickup can be multiple, sets, detects from many places, judge with mean value according to actual conditions, and more accurately coverage rate is wider to make result.
In fact, the pressure difference in kitchen is relevant with exhaust air rate, and all has close association, Different periods with oil extraction smoke which, fresh air air conditioner for machine station air supply amount, occurs that the combination of above-mentioned three kinds of operating conditions is also different, but finally can be reflected in the change of negative pressure value.Because air draft, mist extractor, fresh air conditioner station air supply all produce fluctuation and change to temperature in kitchen, for this reason, when mist extractor operating mode is run, air draft operating mode can decline and reduce exhaust air rate by Yin Wendu, also produces corresponding change to kitchen negative pressure simultaneously; When fresh air conditioner operating mode is run, also can the temperature in kitchen and negative pressure be had an impact and be changed simultaneously, and kitchen Nei Wenduyin fresh air conditioner station air supply changes, can exhaust air rate be affected again conversely and cause producing the fluctuation of negative pressure value.Therefore, regulate the air output of common pressure fan with pressure reduction change, realize the demand that kitchen can meet negative pressure operating mode under all the period of time various operating condition, establish full-automatic intelligent control model.Common blower system can also comprise exhaust blower and the second frequency converter, and exhaust blower is connected with the second frequency converter, and this second frequency converter is connected with controller.Preferably, common blower system also comprises temperature sensor, and described temperature sensor is connected with controller.In addition, can also set up the second frequency converter, exhaust blower is connected with controller by the second frequency converter, and controller is by the second Frequency Converter Control exhaust blower work.Certainly, exhaust blower and common pressure fan also can be separated and be connected with different controllers, for ease of distinguishing, the controller controlling common pressure fan is air blowing control device, the controller controlling exhaust blower is air exhaust controller, and air exhaust controller is connected with air blowing control device, realizes data sharing, control the start and stop of common pressure fan in the service data of indivedual period reference exhaust blower, realize operational mode energy-conservation more economically.
Temperature sensor is for detecting the temperature value of indoor, kitchen, and the temperature value detected is sent to air exhaust controller, air exhaust controller stores the measure of corresponding different temperatures value scope in advance, such as, when temperature value reaches a preset value, air exhaust controller controls exhaust blower and starts, when temperature value is lower than 30 degrees Celsius, air exhaust controller controls exhaust blower and reduces exhaust air rate, now exhaust blower is in low cruise operating mode, when temperature value is lower than 27 degrees Celsius, it is out of service that air exhaust controller controls exhaust blower.Under exhaust blower is in low cruise operating mode, if when now kitchen pressure difference is less than 3pa, air blowing control device controls common pressure fan and shuts down, and when pressure difference equals 10pa, air blowing control device controls common pressure fan and restarts.When exhaust blower because when temperature is shut down lower than 27 degrees Celsius, air blowing control device controls common pressure fan and follows shutdown.By the control measure of the present embodiment, the negative pressure value that kitchen external and internal pressure remains suitable can be guaranteed, in case the smell in kitchen is leaked to public corridor and region, dining room, ensure that the air quality of external environment condition not affected by kitchen.The utility model embodiment also comprises the door status switch be connected with air blowing control device, this door status switch for backstairs detected unlatching after send start signal to air blowing control device, control frequency converter to make air blowing control device and continue in Preset Time with current frequency operation.In fact door status switch is installed on backstairs, when backstairs is opened, trigger gate magnetic switch transmits cut-off signal, backstairs is opened and indoor and outdoor pressure reduction can be caused to change fluctuation, now door status switch sends start signal to controller, the inside and outside differential pressure fluctuation of consequent kitchen is shielded after receiving this signal to make controller, the pressure difference change that differential pressure pickup detects is ignored in Preset Time, thus the normal work of common pressure fan can not be affected because backstairs opens, this Preset Time can set according to actual conditions, such as be set as 1 minute, namely after the start signal receiving door status switch in 1 minute, the change of the pressure difference that differential pressure pickup detects ignored automatically by air blowing control device.
To one skilled in the art, according to technical scheme described above and design, other various corresponding change and deformation can be made, and all these change and deformation all should belong within the protection domain of the utility model claim.
Claims (4)
1. common pressure fan control system, is characterized in that, comprises the common pressure fan, frequency converter, controller, differential pressure pickup and the door status switch that are installed in kitchen; Described common pressure fan is all connected with frequency converter with controller, and described differential pressure pickup is all connected with controller with door status switch; Described differential pressure pickup, for detecting the pressure difference between the indoor and outdoor of kitchen, and is sent to controller by the pressure difference detected; Described door status switch, for backstairs detected unlatching after send start signal to controller, control frequency converter in Preset Time still with current frequency operation to make controller; Described controller, for when determining this pressure difference and being greater than or less than preset value, is opened by the common pressure fan of Frequency Converter Control, and regulates the frequency of frequency converter according to this pressure difference, to make common pressure fan by corresponding frequency operation.
2. common pressure fan control system as claimed in claim 1, is characterized in that, the quantity of described differential pressure pickup is multiple.
3. common pressure fan control system as claimed in claim 1, is characterized in that, also comprises exhaust blower and the second frequency converter, and described exhaust blower is connected with controller by the second frequency converter.
4. common pressure fan control system as claimed in claim 3, it is characterized in that, also comprise temperature sensor, described temperature sensor is connected with controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520663954.0U CN204902122U (en) | 2015-08-28 | 2015-08-28 | Ordinary fan control system that send |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520663954.0U CN204902122U (en) | 2015-08-28 | 2015-08-28 | Ordinary fan control system that send |
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| Publication Number | Publication Date |
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| CN204902122U true CN204902122U (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520663954.0U Active CN204902122U (en) | 2015-08-28 | 2015-08-28 | Ordinary fan control system that send |
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| CN (1) | CN204902122U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210666A (en) * | 2017-07-06 | 2019-01-15 | 庆东纳碧安株式会社 | Indoor exhaust apparatus and feeder and its control method |
| CN110108005A (en) * | 2018-03-23 | 2019-08-09 | 深圳晓风科技有限公司 | A kind of control method of novel fresh air system check (non-return) valve motion control system |
-
2015
- 2015-08-28 CN CN201520663954.0U patent/CN204902122U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210666A (en) * | 2017-07-06 | 2019-01-15 | 庆东纳碧安株式会社 | Indoor exhaust apparatus and feeder and its control method |
| CN110108005A (en) * | 2018-03-23 | 2019-08-09 | 深圳晓风科技有限公司 | A kind of control method of novel fresh air system check (non-return) valve motion control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180326 Address after: Futian District Xiangmi Lake street, Shenzhen Zizhu Guangdong province 518000 city road six min building 403 Patentee after: Shenzhen material Intellectual Technology Co., Ltd. Address before: 1106 Haizhuqu District, Guangzhou, South View Street, room 36, No., room 510000 Patentee before: Zhang Xiong |