CN202254126U - Energy-saving control system of variable air volume air conditioning system end device - Google Patents
Energy-saving control system of variable air volume air conditioning system end device Download PDFInfo
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- CN202254126U CN202254126U CN2011203646506U CN201120364650U CN202254126U CN 202254126 U CN202254126 U CN 202254126U CN 2011203646506 U CN2011203646506 U CN 2011203646506U CN 201120364650 U CN201120364650 U CN 201120364650U CN 202254126 U CN202254126 U CN 202254126U
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- air
- carbon dioxide
- valve
- new wind
- energy
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- 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
Abstract
The utility model provides an energy-saving control system of a variable air volume air conditioning system end device, including a controller, a fresh air duct, a return air duct, an air supply duct, a first carbon dioxide concentration sensor arranged on the fresh air duct, a second carbon dioxide concentration sensor arranged on the return air duct, a third carbon dioxide concentration sensor arranged on the air supply duct, a fresh air valve arranged on the fresh air duct, an air exhaust valve arranged on the air supply duct, an air return valve arranged between the fresh air valve and the air exhaust valve, and an air return fan arranged on the air supply duct, wherein, the controller is respectively connected to the first carbon dioxide concentration sensor, the second carbon dioxide concentration sensor, and the third carbon dioxide concentration sensor. The energy-saving control system provided can ensure the indoor air quality, and can reduce the electric energy consumption of reheating apparatuses, cooling apparatuses, and blower fans.
Description
Technical field
The utility model relates to technical field of refrigeration equipment, particularly a kind of control system of air conditioning system with variable end equipment.
Background technology
Air conditioning system with variable is widely used in commercial mansion and industrial premises, and its effect is the air themperature of regulating the room, and guarantees air quality.Common application includes but not limited to single air channel air conditioning system with variable, two air channels air conditioning system with variable and multizone air conditioning system with variable.
Common air conditioning system with variable is made up of one (single air channel) or a plurality of (two air channel) air-valve, heat(ing) coil, flowmeter, wind pushing temperature sensor and controller.Controller can receive the information from thermostat, inductive pick-up and carbon dioxide sensor.
New wind is an indispensable part in the mankind or the animal living space, and can also dilute the VOC (VOC) (for details, please check ASHRAE standard 62.2.) in room.In order to ensure the requirement that can satisfy new wind, each end has been set a minimum air-supply value.Because under the loading condiction of setting, the resh air requirement of taking in from the air-conditioning unit is generally 10% to 20% of total air output, so minimum air output is usually up to 40% of tip designs air output.No matter building loading is much, minimum air output remains unchanged.When the air output of end be lower than minimum air quantity than the time, need again heat to keep the stable of room temperature.This will cause occurring the power consumption of a large amount of heating, cooling and fan power, and can not satisfy minimum resh air requirement requirement.
In order to keep stable new wind to take in, propose and implemented some engineering improvement methods.The control method that requires based on new wind is one of them.Carbon dioxide sensor is installed on the backwind tube, is used to survey the gas concentration lwevel of actual return air.Gas concentration lwevel is controlled at than the high 700PPM of outdoor atmospheric carbon dioxide concentration.If gas concentration lwevel is lower than 700PPM than the concentration of outdoor atmospheric carbon dioxide, then turn down outdoor adjusting air-valve, vice versa.There is following problem in this method: (1) is because each regional occupation of land is different with new wind requirement, so it can not guarantee that all there is suitable new wind in each zone; (2) if it can't operate as normal when a small amount of new wind being arranged in the building or diluting VOC with new wind.
In order to solve the control problem that needs based on new wind, a kind of common way is that return air gas concentration lwevel desired value is arranged on a very low level, for example only is higher than outdoor atmospheric carbon dioxide concentration 400PPM.Though the method has improved each regional resh air requirement, but can not guarantee indoorly has good ventilation effect and satisfies new wind requirement, and has increased the absorption of new wind greatly.End also will carry out heating and cooling to this part new wind, has caused more electric energy consumption.When using the method, minimum fresh air requirmente is taken in and is remained unchanged usually or up to 40% of design air flow.
A kind of method in addition is that suggestion is installed carbon dioxide sensor in each room.The method can guarantee to have normal each room of living or handling official business of people to have sufficient new wind.But the resh air requirement in nobody's zone is zero, can make this part zone pile up a large amount of VOC like this, thereby can not guarantee the indoor good air quality that has.And this method is not established minimum air output and is needed that a large amount of carbon dioxide sensors is installed and cause the initial cost cost high, wastes a large amount of electric energy and air is being heated, cooling off and providing on the power for blower fan.
For head it off, developed special-purpose new blower fan group.The new blower fan group of this special use can be that the building provides constant resh air requirement according to design conditions.Because the personnel amount in the building is different on each time period with each office, so the new wind in the in most cases special-purpose new blower fan group supply chamber is excessive, but some zone is not enough.So special-purpose new blower fan group can not solve the problem of the new wind of building.And this method is to heat, the cooling and wasted significant amount of energy on the power for blower fan provides again of new wind.
The utility model content
The utility model provides a kind of energy-saving control system of the air conditioning system with variable end equipment that can guarantee indoor air quality and cut down the consumption of energy.
To achieve these goals, the utility model provides following technical scheme:
A kind of control system of air conditioning system with variable end equipment; It comprises: controller, new wind airduct, return air airduct, ajutage, be arranged on the first gas concentration lwevel sensor on the said new wind airduct, be arranged on the second gas concentration lwevel sensor on the said return air airduct, be arranged on the 3rd carbon dioxide sensor on the said ajutage, be arranged on new air-valve on the said new wind airduct, be arranged on exhaust valve on the said ajutage, be arranged on the return air air-valve between said new air-valve and the said exhaust valve and the return fan on the said ajutage is set, said controller divides level signal to connect the said first gas concentration lwevel sensor, the second gas concentration lwevel sensor and the 3rd carbon dioxide sensor.
Preferably, also be provided with surface cooler on the said ajutage.
Through implementing above technical scheme, have following technique effect: the system that the utility model provides can guarantee indoor air quality, reduces the electric energy power consumption of hot again equipment, cooling device and blower fan etc.
Description of drawings
The structural representation of the system that Fig. 1 provides for the utility model embodiment.
The specific embodiment
In order better to understand the technical scheme of the utility model, describe the embodiment that the utility model provides in detail below in conjunction with accompanying drawing.
The utility model embodiment provides a kind of energy-saving control system of air conditioning system with variable end equipment; As shown in Figure 1; This system comprises: controller 100, new wind airduct 110, return air airduct 120, ajutage 130, be arranged on the first gas concentration lwevel sensor 101 on the said new wind airduct 110, be arranged on the second gas concentration lwevel sensor 102 on the said backwind tube 120, be arranged on the 3rd carbon dioxide sensor 103 on the said ajutage 130, be arranged on new air-valve 108 on the said new wind airduct 110, be arranged on exhaust valve 109 on the said ajutage 130, be arranged on the return air air-valve 107 between said new air-valve 108 and the said exhaust valve 109 and the return fan 106 on the said ajutage 130 is set, 110 fens level signals of said controller connect the said first gas concentration lwevel sensor 101, the second gas concentration lwevel sensor 102 and the 3rd carbon dioxide sensor 103.Each air quantity variable end device 201,202,203,204 of connection of this control system.Each air quantity variable end device 201,202,203,204 is regulated, realize purpose of energy saving according to each carbon dioxide sensor.Concrete; The return air airduct 120 of this control system is communicated with said each air quantity variable end device 201,202,203,204; Blow said each air quantity variable end device 201,202,203,204 of said controller 100 control connections to each air quantity variable end device 201,202,203,204.
In a further embodiment, also be provided with surface cooler 104 on the said ajutage 130, be used for freezing sending the wind that comes to.
The structure that the minimum air quantity of air quantity variable air conditioner end equipment is set energy-saving control system is that each air quantity variable air conditioner unit and corresponding air quantity variable end device all are furnished with the controller of a special use.At new wind airduct, ajutage, return air airduct gas concentration lwevel sensor 101,102,103 is installed.Controller 100 is gathered the gas concentration lwevel value through numeral or analog signal from sensor; Calculate the intake of new wind and the freshness of air-supply according to the gas concentration lwevel value again, so that confirm the minimum air output setting value of each air quantity variable end device 201,202,203,204.The control of air quantity variable end device 201,202,203,204 controlled systems according to the temperature of control air conditioning area control air output, and is lower limit with the minimum air output setting value that calculates.
Terminal control of the present invention system also can be connected with building automation system, can be it suitable new wind is provided, and guarantee that new wind intake is higher than exhaust air rate, to guarantee building certain malleation is arranged.
Concrete process is:
Three gas concentration lwevel sensors 101,102,103 or VOC (VOC) sensor and compressor flow tester are respectively applied for carbon dioxide or the VOC concentration of surveying new wind, return air and air-supply.When calculating the freshness of air-supply with formula (1) seldom the time from the resh air requirement of outdoor absorption.Calculate the resh air requirement of directly taking in formula (2):
CFM
New wind=β
1* CFM
Compressor flow(2)
In the formula, β
1The freshness of expression unit blasting air; CO
2(VOC)
The room original airThe CO2 or the VOC concentration of expression room original air; CO
2(VOC)
Outdoor airThe CO2 or the VOC concentration of expression outdoor air; CO
2(VOC)
Return airThe CO2 or the VOC concentration of expression room return air; CFM
New windThe resh air requirement that expression is directly taken in; CFM
Compressor flowThe compressor flow that expression compressor flow tester is tested.Formula (1) and formula (2) are applicable to single air channel air-conditioning unit and the two air channels of single fan air-conditioning unit.For double fan air channel air-conditioning unit, must the 4th carbon dioxide or VOC sensor be installed at hot-flow flue.Can use formula (1) to calculate the ratio of taking in resh air requirement.
Calculate the original air freshness in room with following equation:
In the formula, β representes the original air freshness in room; Δ CO2 or Δ VOC are the increasing value of desired carbon dioxide in typical residential area or building or VOC concentration.Preferably, carbon dioxide values is 700PPM.
The minimum blast volume controller of air quantity variable end device is set according to following explanation and is sent little airflow value most.
After this zone was used, terminal controller can calculate minimum air output according to following equality (5) (ASHRAE standard 62.2):
CFM
Fresh air=R
pP
z+ R
aA
Z(5)
Wherein: CFM
New windThe air volume flow rate that-Xin wind requires is ft
3/ min
R
p-everyone required new wind rate (each 5CFM/ of office everyone)
P
z-regional population, unit is everyone
R
aThe new wind rate (0.06CFM/ft that-per unit area is required
2)
A
Z-regional floor space is ft
2
If this zone is not used, then use following equality to calculate new wind demand:
If system's new wind ratio is higher than preset definite value, for example 10%, then the minimum air output of air quantity variable end device must be confirmed with the ratio of air-supply freshness by the resh air requirement of demand:
In addition, controller of mentioning among the utility model embodiment and system comprise common function available in existing controller and the system.These functions comprise:
Input:
Room temperature
B. flow to the air-flow in room or zone
C. the induced signal that spreads out of of the button of light switch or movable sensor and/or induction override control device.
D. wind pushing temperature (optional)
C. new wind-warm syndrome degree (optional)
Output:
Regulate air-valve
B. flow of hot water control valve again
C. electric heater switch control
The storing and setting value:
Heating-up temperature setting value and control band
B. the chilling temperature setting value is with control
C. unmanned with minimum and maximum heat air quantity setting value during the people is arranged
D. unmanned with minimum and maximum cold air quantity setting value during the people is arranged
E. every day unmanned with have during the people by and the time started.
F. arrange vacation
G. control loop gain.
Generate control output and operational mode
The heating and cooling pattern
B has people and unmanned pattern
C. output to air-valve and control valve
The end control commonly used relatively of this utility model has increased following function newly:
Input:
The freshness (from the air quantity variable air conditioner generator set controller) of air-supply
The storing and setting value:
Floor space and space type
Inhabitation number under the normal condition
Generate control output and operational mode
According to definite minimum air outputs of situation such as the freshness of living and blow.
More than the energy-saving control system of a kind of air conditioning system with variable end equipment that the utility model embodiment is provided carried out detailed introduction; For one of ordinary skill in the art; Thought according to the utility model embodiment; The part that on the specific embodiment and range of application, all can change, in sum, this description should not be construed as the restriction to the utility model.
Claims (2)
1. the energy-saving control system of an air conditioning system with variable end equipment; It is characterized in that; Comprise: controller, new wind airduct, return air airduct, ajutage, be arranged on the first gas concentration lwevel sensor on the said new wind airduct, be arranged on the second gas concentration lwevel sensor on the said return air airduct, be arranged on the 3rd carbon dioxide sensor on the said ajutage, be arranged on new air-valve on the said new wind airduct, be arranged on exhaust valve on the said ajutage, be arranged on the return air air-valve between said new air-valve and the said exhaust valve and the return fan on the said ajutage is set, said controller divides level signal to connect the said first gas concentration lwevel sensor, the second gas concentration lwevel sensor and the 3rd carbon dioxide sensor.
2. the energy-saving control system of air conditioning system with variable end equipment according to claim 1 is characterized in that, also is provided with surface cooler on the said ajutage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203646506U CN202254126U (en) | 2011-09-27 | 2011-09-27 | Energy-saving control system of variable air volume air conditioning system end device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203646506U CN202254126U (en) | 2011-09-27 | 2011-09-27 | Energy-saving control system of variable air volume air conditioning system end device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202254126U true CN202254126U (en) | 2012-05-30 |
Family
ID=46115359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203646506U Expired - Lifetime CN202254126U (en) | 2011-09-27 | 2011-09-27 | Energy-saving control system of variable air volume air conditioning system end device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202254126U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335363A (en) * | 2013-05-22 | 2013-10-02 | 华中科技大学 | Control device and control method for integral centralized air processing system |
| CN103604175A (en) * | 2013-11-29 | 2014-02-26 | 广州同方瑞风空调有限公司 | Fresh air system |
| CN104776558A (en) * | 2015-03-25 | 2015-07-15 | 珠海格力电器股份有限公司 | Fresh air system and air valve opening control method thereof |
| CN114135991A (en) * | 2021-12-03 | 2022-03-04 | 中国海洋大学 | Temperature preset control and equipment early warning method for subway station public area |
| CN114608120A (en) * | 2022-03-14 | 2022-06-10 | 青岛海尔空调器有限总公司 | Control method of fresh air linkage system, fresh air linkage system and electronic equipment |
-
2011
- 2011-09-27 CN CN2011203646506U patent/CN202254126U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335363A (en) * | 2013-05-22 | 2013-10-02 | 华中科技大学 | Control device and control method for integral centralized air processing system |
| CN103335363B (en) * | 2013-05-22 | 2016-01-20 | 华中科技大学 | Control device and the control method of air treatment system are concentrated in integration |
| CN103604175A (en) * | 2013-11-29 | 2014-02-26 | 广州同方瑞风空调有限公司 | Fresh air system |
| CN103604175B (en) * | 2013-11-29 | 2016-07-06 | 广州同方瑞风节能科技股份有限公司 | A kind of VMC (Ventilation Mechanical Control System) |
| CN104776558A (en) * | 2015-03-25 | 2015-07-15 | 珠海格力电器股份有限公司 | Fresh air system and air valve opening control method thereof |
| CN104776558B (en) * | 2015-03-25 | 2018-10-23 | 珠海格力电器股份有限公司 | Fresh air system and its valve area control method |
| CN114135991A (en) * | 2021-12-03 | 2022-03-04 | 中国海洋大学 | Temperature preset control and equipment early warning method for subway station public area |
| CN114135991B (en) * | 2021-12-03 | 2023-03-31 | 中国海洋大学 | Temperature preset control and equipment early warning method for subway station public area |
| CN114608120A (en) * | 2022-03-14 | 2022-06-10 | 青岛海尔空调器有限总公司 | Control method of fresh air linkage system, fresh air linkage system and electronic equipment |
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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 |
Effective date of registration: 20180206 Address after: Omaha City, Nebraska Patentee after: Liu Mingsheng Address before: 518000 No. 1407, No. 1507, overseas student Pioneer Building, Nanshan District hi tech Zone, Guangdong, Shenzhen Patentee before: Shenzhen Best Energy Environmental Protection Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190428 Address after: B2 District, 21 Floor, Innovation Building, 315 Changjiang Avenue, Shijiazhuang High-tech Zone, Hebei Province Patentee after: Shijiazhuang Baishide Energy Saving Service Co., Ltd. Address before: Omaha City, Nebraska Patentee before: Liu Mingsheng |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |
|
| CX01 | Expiry of patent term |