CN207849673U - The fresh air system of adjusting air inlet amount - Google Patents
The fresh air system of adjusting air inlet amount Download PDFInfo
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- CN207849673U CN207849673U CN201721624973.8U CN201721624973U CN207849673U CN 207849673 U CN207849673 U CN 207849673U CN 201721624973 U CN201721624973 U CN 201721624973U CN 207849673 U CN207849673 U CN 207849673U
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- fresh air
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Abstract
This application discloses the fresh air system of adjusting air inlet amount.Wherein, one embodiment of fresh air system includes：Differential pressure pickup, the pressure difference for measuring indoor and outdoors, the pressure sensor of one end is set to outdoor when installation, and intake stack of the circuit through fresh air system leads to interior, and the pressure sensor of the other end is set to interior；Detection module, it is connect with differential pressure pickup, the interior pressure difference signal with outdoor of receiving chamber, when there is initial differential pressure outside indoors, judge whether change of the pressure difference of indoor and outdoor within the unit interval is more than default change threshold, when change of the pressure difference of indoor and outdoor within the unit interval is more than default change threshold, transmits Regulate signal to adjustment module, wherein, initial differential pressure is the stabilization pressure difference fluctuated within a preset range；Adjustment module is connect with detection module, receives above-mentioned Regulate signal, and intake is adjusted to predetermined value.The embodiment can improve the validity of fresh air system supply fresh air.
Description
Technical field
This application involves fresh air system applied technical field more particularly to the fresh air system of adjusting air inlet amount.
Background technology
A set of independent air processing system that fresh air system is made of supply air system and exhaust system, it is according to close
Fresh air is sent in the indoor side closed with special equipment to interior, then from the other side from special equipment to outdoor discharge, indoors can shape
At " fresh air field of flow ", to meet the needs of indoor fresh air ventilating.Usually, fresh air system is using high wind pressure, big flow wind
Machine, by mechanical strength by a lateral indoor air-supply, from the other side with the exhaust fan specially designed to the mode of outdoor discharge
Force the formation fresh air field of flow in system.While air-supply to the air that gets in into filter, the poison that goes out, sterilization, oxygenation,
Preheat at least one of (winter) etc. operation.Once indoor to outdoor isobaric or formation negative pressure, outdoor dirty air will be very
Interior is easily infiltrated into, is polluted.And in practical application, it opens the door, open a window, other air circulation systems (such as smoke exhaust ventilator etc.)
The case where opening, may all causing indoor isobaric to outdoor or formation negative pressure.Therefore, it is necessary to indoors to outdoor pressure generation
When variation, countermeasure is provided in time, to improve the validity that fresh air system supplies fresh air.
Utility model content
The purpose of the application is to propose a kind of fresh air system of improved adjusting air inlet amount, to solve background above skill
The technical issues of art part is mentioned.
The embodiment of the present application provides a kind of fresh air system of adjusting air inlet amount, which includes：Pressure difference sensing
Device, the pressure difference for measuring indoor and outdoors, the pressure sensor of one end is set to outdoor when installation, and circuit is through the fresh air system
Intake stack lead to interior, the pressure sensor of the other end is set to interior；Detection module is connect with the differential pressure pickup,
It is outer when there is initial differential pressure indoors with outdoor pressure difference signal in receiving chamber, judge the pressure difference of indoor and outdoor within the unit interval
Change whether be more than default change threshold, when change of the pressure difference within the unit interval of indoor and outdoor is more than default change threshold
When, Regulate signal is transmitted to adjustment module, wherein the initial differential pressure is the stabilization pressure difference fluctuated within a preset range；It is described
Adjustment module is connect with the detection module, receives the Regulate signal, and intake is adjusted to predetermined value.
In some embodiments, further include reminding module, the reminding module is connect with the detection module, is used for：Institute
The difference that detection module detects the pressure difference and the stable pressure difference of indoor and outdoors according to the intake after adjusting is stated, when the difference
When less than the first predetermined threshold value, the detection module, which is sent, restores signal to the adjustment module, so that the adjustment module will
Intake is adjusted to initial intake, wherein the intake when pressure difference that initially intake includes indoor and outdoor is initial differential pressure；When
When the difference is more than the first predetermined threshold value and less than the second predetermined threshold value, the detection module sends the first alerting signal to described
Reminding module, so that the reminding module sends out the first prompting；When the difference is more than third predetermined threshold value, the detection module
The second alerting signal is sent to the reminding module, so that the reminding module sends out the second prompting.
In some embodiments, the reminding module includes following at least one：Display screen, buzzer.
In some embodiments, first prompting includes the prompting that smoke exhaust ventilator or exhaust fan are opened.
In some embodiments, second prompting includes the prompting that door or window are opened.
In some embodiments, pressure sensor is more than pre-determined distance threshold at a distance from air inlet or air outlet when installation
Value.
In some embodiments, the detection module includes：Programmable logic controller (PLC) or microcontroller.
In some embodiments, the adjustment module includes relay or selects the multi-channel switch of a connection.
The fresh air system of adjusting air inlet amount provided by the present application measures the pressure of indoor and outdoors by differential pressure pickup
Difference, detection module are connect with the differential pressure pickup, outer indoors to have initial differential pressure with outdoor pressure difference signal in receiving chamber
When, judge whether change of the pressure difference of indoor and outdoor within the unit interval is more than default change threshold, when the pressure difference of indoor and outdoor is in list
When change in the time of position is more than default change threshold, Regulate signal is transmitted to adjustment module, adjustment module connects with detection module
It connects, receives above-mentioned Regulate signal, intake is adjusted to predetermined value, since air inlet can be adjusted in time when pressure difference mutation occurs
Amount provides countermeasure, compensating differential pressure loss, so as to improve the validity that fresh air system supplies fresh air in time.
Description of the drawings
By reading a detailed description of non-restrictive embodiments in the light of the attached drawings below, the application's is other
Feature, objects and advantages will become more apparent upon：
Fig. 1 shows the system framework of the fresh air system of one embodiment adjusting air inlet amount using the application；
Fig. 2 is the structural schematic diagram according to one embodiment of the fresh air system of the adjusting air inlet amount of the application.
Specific implementation mode
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention, rather than the restriction to the invention.It also should be noted that in order to
Convenient for description, is illustrated only in attached drawing and invent relevant part with related.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Fig. 1 shows the system framework 100 that air quantity is adjusted for fresh air system of one embodiment using the application.
First, as shown in Figure 1, frame 100 may include the fresh air system 102 of room 101, main body in room 101,
Wherein, the intake stack 103 of fresh air system 102 leads to outdoor by the wall opening in room 101.Fresh air system 102 can be with
Including differential pressure pickup 104, the pressure difference for measuring 101 indoor and outdoors of room, i.e. pressure difference value.Differential pressure pickup 104 can
To be connect with the detection module of fresh air system to, the pressure difference data of measurement is sent to the detection module of fresh air system 102.It is optional
Ground impacts pressure data by inlet and outlet outlet and inlet in order to avoid the pressure data of differential pressure pickup, and the application is implemented
In example the pressure sensor 1041 at 104 both ends of differential pressure pickup and 1042 should respectively from air inlet and outlet at least pre-determined distance,
Such as 50 centimetres.
Referring to FIG. 2, it illustrates the fresh air system 200 according to the application one embodiment.As shown in Fig. 2, fresh air system
There is air inlet 201, air outlet 202, differential pressure pickup 205 to be routed through air inlet 201, air outlet 202 on system 200, with
The detection module 203 of fresh air system 200 connects, and detection module 203 is connect with adjustment module 204.Wherein, differential pressure pickup 205
The pressure difference that can be used for measuring indoor and outdoors, when installation, the pressure sensor 2051 of one end is set to outdoor, the pressure of the other end
Sensor 2052 is set to interior；Detection module 203 can be outer indoors to have initial pressure with the pressure difference signal with outdoor in receiving chamber
When poor, judge whether change of the pressure difference of indoor and outdoor within the unit interval is more than default change threshold, when the pressure difference of indoor and outdoor exists
When change in unit interval is more than default change threshold, Regulate signal is transmitted to adjustment module 204, wherein above-mentioned initial pressure
Difference is the stabilization pressure difference fluctuated within a preset range；Adjustment module 204 can receive above-mentioned Regulate signal, and intake is adjusted to
Predetermined value.In some implementations, pressure sensor is more than pre-determined distance threshold value (such as at a distance from air inlet or air outlet when installation
50 centimetres).
It is appreciated that after fresh air system startup, need filtered air being sent into interior, it is new to be formed indoors
Fresh air is long, and remains indoor and have stable normal pressure relative to outdoor, that is, maintain it is indoor with outdoor pressure difference be one just
Value.Usually, pressure difference positive value is the value in a preset range, for example, the value between 5~10 Pascals (Pa).The value can
It presets.After the pressure difference of indoor and outdoor maintains stable state, if room door or window are opened or indoor exhaust ventilation
Equipment, such as smoke exhaust ventilator or ventilation fan are opened, indoor relative to outdoor pressure difference meeting with the rapid discharge of room air
It rapidly changes, that is, pressure difference mutation occurs.Therefore, in the present embodiment, stabilization can be maintained by pressure difference outdoor indoors
After state, whether detection pressure difference, which mutates, determines whether to need to adjust the intake of fresh air system.In some implementations,
Aforementioned stable pressure difference can be：When the pressure difference of indoor and outdoor fluctuates within a preset range, continuous multiple differential pressure measurements are averaged
Value, or to the pressure difference that is fitted of differential pressure measurement curve in continuous time section.With to experiment curv be fitted for
Example, fresh air system can pass through according to the differential pressure curve of (such as 1 minute) in continuous time section using some pressure difference as constant
The straight line of function is split, and when the sum of graphics area surrounded with curve when straight line both sides is equal, determines corresponding pressure difference
To stablize pressure difference.
In the present embodiment, fresh air system 200 can obtain indoor and outdoor by detection module 203 has initial differential pressure.This
In initial differential pressure can be pressure difference when the pressure difference of indoor and outdoor above-mentioned maintains stable state.The pressure difference can be pre-
If the stabilization pressure difference fluctuated in range, such as pressure difference (6 ± 1) Pa, that is, stablize the stable pressure fluctuated within the scope of 6Pa, upper and lower 1Pa
Difference.
In practice, it can usually have greatly changed within the unit interval to reflect that pressure difference is mutated.Therefore, when indoor room
When outer pressure difference has initial differential pressure, detection module 203 can be further by the pressure difference inside and outside sensing chamber within the unit interval
Change whether be more than default change threshold to determine whether pressure difference mutation occurs.Here default change threshold can be artificial
Setting, can also be to be obtained according to experiment.By taking experiment obtains as an example, fresh air system can stablize indoor external differential one
In a positive pressure value, the pressure difference is then continuously decreased, often changes a pressure difference, indoor air quality is detected, when change is arrived
Some pressure difference, indoor air quality are reduced to be expected, then using the difference of the pressure difference and initial differential pressure as default variation
Threshold value.
It will be understood by those skilled in the art that intake can be adjusted according to the watt level of wind turbine.Detection module
203 can be defeated by permanent circuit when change of the pressure difference for judging indoor and outdoor within the unit interval is more than default change threshold
Go out Regulate signal, the circuit of wind turbine is changed into permanent circuit, the range and air inlet of pressure difference knots modification can also be preset
The correspondence for measuring knots modification is adjusted by corresponding circuit output according to the actual size that pressure difference changes within the unit interval and is believed
Number, the circuit of wind turbine is changed into corresponding circuit, for example, when pressure difference changes 3 Pascal, is increased intake by connecting
The circuit output Regulate signal for adding 1 cubic meters per second, to connect the circuit that intake is increased to 1 cubic meters per second, to change
The power regulation intake of wind turbine.In some implementations, detection module 203 can include but is not limited to following at least one：It can
Programmed logic controller (PLC) or microcontroller.By taking detection module 203 is PLC as an example, Regulate signal can pass through the output end of PLC
Adjustment module 204 is passed in oral instructions.
In some optional realization methods of the present embodiment, adjustment module 204 may include relay or select a connection
Multi-channel switch.By taking relay as an example, the normally-closed contact of relay can connect the initial circuit of wind turbine, and normally opened contact can be with
The terminal of 203 output regulation signal of detection module is connected, and when 203 output regulation signal of detection module, relay coil is powered,
Normally opened contact is closed, to change intake by the power for changing wind turbine.
In some optional realization methods of the present embodiment, fresh air system 200 can also include reminding module (not shown),
Reminding module can be connect with detection module 203.Detection module 203, can be with after output regulation signal is to adjustment module 204
The difference that the pressure difference and initial differential pressure of indoor and outdoors are further detected according to the intake after adjusting, when the difference is less than first
When predetermined threshold value, detection module 203, which can be sent, restores signal to adjustment module 204, so that adjustment module 204 is by intake tune
Section is to initial intake, wherein the intake that initial intake is the pressure difference of indoor and outdoor when being initial differential pressure.When the difference is more than
First predetermined threshold value and when less than the second predetermined threshold value, detection module 204 can send the first alerting signal to reminding module, with
The first prompting is sent out for reminding module；When the difference is more than third predetermined threshold value, detection module sends the second alerting signal extremely
Reminding module, so that reminding module sends out the second prompting.
It is appreciated that：
If after module 204 adjusts intake after the adjustment, the difference of indoor and outdoor Ah tea and initial differential pressure reduces, and levels off to
0, then illustrate to adjust intake compensate for it is indoor outdoor normal pressure is lost, indoor environment tends towards stability again, at this time can be with
Intake is adjusted to initial intake.Wherein, initial intake can be before pressure difference mutation occurs, and indoor and outdoor has initial pressure
Corresponding intake when poor.Here it is possible to pre-set the first predetermined threshold value, which can be manually set
Can also be the value determined according to the fluctuation range of initial differential pressure close to 0 numerical value.Such as initial differential pressure is to stablize
The pressure difference of 6Pa, it is upper and lower 1Pa to preset fluctuation range, then first predetermined threshold value can be 1Pa.
If the difference reduces, but it is difficult to be reduced to the first predetermined threshold value again afterwards to a certain extent to reduce, then may be
Exhaust or air regenerating device in room are opened, and fresh air system, which adjusts intake, can compensate a part of normal pressure loss.At this point, should
Difference is less than the second predetermined threshold value more than the first predetermined threshold value, and fresh air system can send out the first prompting.The first prompting example
It such as can be that air draft or air regenerating device are opened, can also be that please close exhaust ventilation equipment etc., the application does not limit this.
Optionally, which can be that smoke exhaust ventilator or exhaust fan are opened.
If the difference can not reduce or reduce seldom may be room door or window open, lead to indoor and room
Outer air communication is lost to which fresh air system can not compensate indoor normal pressure to the adjusting of air quantity.At this point, the difference can be big
In third predetermined threshold value, fresh air system can send out third prompting, such as can be that door or window are opened or please be closed the doors and windows.
In the optional realization method of the present embodiment, reminding module includes following at least one：Display screen, buzzer,
It is reminded respectively by word, sound.
The fresh air system of the adjusting air inlet amount of the present embodiment, by detecting the pressure difference of indoor and outdoors in the unit interval
Interior change has been more than that default change threshold determines whether that pressure difference mutation occurs, and adjusts intake when pressure difference mutation occurs,
It is lost with compensating differential pressure, so as to provide countermeasure in time, improves the validity of fresh air system supply fresh air.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.People in the art
Member should be appreciated that invention scope involved in the application, however it is not limited to technology made of the specific combination of above-mentioned technical characteristic
Scheme, while should also cover in the case where not departing from foregoing invention design, it is carried out by above-mentioned technical characteristic or its equivalent feature
Other technical solutions of arbitrary combination and formation.Such as features described above has similar work(with (but not limited to) disclosed herein
Can technical characteristic replaced mutually and the technical solution that is formed.
Claims (8)
1. a kind of fresh air system of adjusting air inlet amount, which is characterized in that the fresh air system includes：
Differential pressure pickup, the pressure difference for measuring indoor and outdoors, the pressure sensor of one end is set to outdoor, circuit warp when installation
The intake stack of the fresh air system leads to interior, and the pressure sensor of the other end is set to interior；
Detection module is connect with the differential pressure pickup, outer indoors to have initial pressure with outdoor pressure difference signal in receiving chamber
When poor, judge whether change of the pressure difference of indoor and outdoor within the unit interval is more than default change threshold, when the pressure difference of indoor and outdoor exists
When change in unit interval is more than default change threshold, Regulate signal is transmitted to adjustment module, wherein the initial differential pressure is
The stabilization pressure difference fluctuated within a preset range；
The adjustment module is connect with the detection module, receives the Regulate signal, and intake is adjusted to predetermined value.
2. fresh air system according to claim 1, which is characterized in that further include reminding module, the reminding module and institute
Detection module connection is stated, is used for：
The detection module detects the difference of the pressure difference and the initial differential pressure of indoor and outdoors according to the intake after adjusting, when
When the difference is less than the first predetermined threshold value, the detection module, which is sent, restores signal to the adjustment module, for the adjusting
Intake is adjusted to initial intake by module, wherein initial intake includes the pressure difference of indoor and outdoor when being initial differential pressure into
Air quantity；When the difference is less than the second predetermined threshold value more than the first predetermined threshold value, the detection module sends first and reminds letter
Number to the reminding module, so that the reminding module sends out the first prompting；It is described when the difference is more than third predetermined threshold value
Detection module sends the second alerting signal to the reminding module, so that the reminding module sends out the second prompting.
3. fresh air system according to claim 2, which is characterized in that the reminding module includes following at least one：It is aobvious
Display screen, buzzer.
4. fresh air system according to claim 2, which is characterized in that first prompting includes smoke exhaust ventilator or exhaust fan
The prompting being opened.
5. fresh air system according to claim 2 or 3, which is characterized in that second prompting includes that door or window are opened
Prompting.
6. fresh air system according to claim 1, which is characterized in that pressure sensor and air inlet or air outlet when installation
Distance be more than pre-determined distance threshold value.
7. fresh air system according to claim 1, which is characterized in that the detection module includes：Programmable logical controller
Device or microcontroller.
8. fresh air system according to claim 1, which is characterized in that the adjustment module includes relay or selects a connection
Multi-channel switch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721624973.8U CN207849673U (en) | 2017-11-28 | 2017-11-28 | The fresh air system of adjusting air inlet amount |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721624973.8U CN207849673U (en) | 2017-11-28 | 2017-11-28 | The fresh air system of adjusting air inlet amount |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111059703A (en) * | 2019-12-04 | 2020-04-24 | 珠海格力电器股份有限公司 | Air volume control method |
| CN111306629A (en) * | 2020-03-03 | 2020-06-19 | 青岛海尔空调器有限总公司 | Method and device for controlling fresh air device and fresh air equipment |
| CN112594208A (en) * | 2020-12-07 | 2021-04-02 | 广州市耀安实业发展有限公司 | Fan flow detection method and system, computer equipment and storage medium |
| CN113719981A (en) * | 2020-05-25 | 2021-11-30 | 广东美的制冷设备有限公司 | Indoor and outdoor air pressure difference detection method and device, air conditioning equipment and storage medium |
-
2017
- 2017-11-28 CN CN201721624973.8U patent/CN207849673U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111059703A (en) * | 2019-12-04 | 2020-04-24 | 珠海格力电器股份有限公司 | Air volume control method |
| CN111306629A (en) * | 2020-03-03 | 2020-06-19 | 青岛海尔空调器有限总公司 | Method and device for controlling fresh air device and fresh air equipment |
| CN111306629B (en) * | 2020-03-03 | 2021-12-21 | 重庆海尔空调器有限公司 | Method and device for controlling fresh air device and fresh air equipment |
| CN113719981A (en) * | 2020-05-25 | 2021-11-30 | 广东美的制冷设备有限公司 | Indoor and outdoor air pressure difference detection method and device, air conditioning equipment and storage medium |
| CN113719981B (en) * | 2020-05-25 | 2022-09-27 | 广东美的制冷设备有限公司 | Indoor and outdoor air pressure difference detection method and device, air conditioning equipment and storage medium |
| CN112594208A (en) * | 2020-12-07 | 2021-04-02 | 广州市耀安实业发展有限公司 | Fan flow detection method and system, computer equipment and storage medium |
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Address after: 100089 Beipu factory, West Academy of Agricultural Sciences, Dazhongsi second food factory, Haidian District, Beijing Patentee after: Beijing Second New Technology Co.,Ltd. Address before: 036300 North Street, Chengguan Town, Kelan County, Xinzhou City, Shanxi Province Patentee before: SHANXI CAIYUNGUI TECHNOLOGY Co.,Ltd. |
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