CN208458198U - A kind of vav terminal system that operating condition automatically switches - Google Patents
A kind of vav terminal system that operating condition automatically switches Download PDFInfo
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- CN208458198U CN208458198U CN201820212523.6U CN201820212523U CN208458198U CN 208458198 U CN208458198 U CN 208458198U CN 201820212523 U CN201820212523 U CN 201820212523U CN 208458198 U CN208458198 U CN 208458198U
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- vav terminal
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Abstract
The utility model relates to the vav terminal systems that a kind of operating condition automatically switches, including vav terminal cabinet, volume damper, air flow sensor, vav terminal controller and temperature sensor；Volume damper, air flow sensor and temperature sensor are connected with vav terminal controller respectively；Volume damper is set in vav terminal cabinet, is used for regulating air volume；Air flow sensor is set in vav terminal cabinet, for acquiring air output；Temperature sensor is for detecting room temperature and supply air temperature；Vav terminal controller is set to outside vav terminal cabinet, for receiving the room temperature, supply air temperature and indoor set temperature information, and controls the operational mode of switching vav terminal；Using the above scheme, working efficiency can be effectively improved, while improving the accuracy of system condition setting, reduces cost.
Description
Technical field
The utility model belongs to Heating,Ventilating and Air Conditioning automation field, and in particular to a kind of change wind that operating condition automatically switches
Measure end system.
Background technique
Air conditioning system with variable is also known as VAV system (Variable Air Volume System), is that one kind passes through change
Air output carrys out the air-conditioning system of epidemic disaster environment in regulation room；It is several in each room or region installation in air conditioning system with variable
A air quantity variable end device (VAV-BOX), air quantity variable end device can adjust air output according to room temperature and setting value, guarantee
Temperature control precision in room, while playing the purpose for reducing air-conditioner set fan energy consumption.Because it is with indoor air quality
Well, energy conservation is obvious when sub-load and air conditioning area controls the features such as flexible, has been widely used in all kinds of of foreign countries
In office, commercial building.
The refrigerating/heating operating condition of existing air quantity variable end device generally by artificially having operated on control panel indoors
At, or unified to issue refrigerating/heating operating condition to each vav terminal by central monitor from operational management personnel,
Under most of load of winter and summer, the operating condition of vav terminal can be correctly arranged in administrative staff.But in conditioning in Transition Season
Section and its front and back, indoor cooling and heating load change greatly, and air-conditioner set changes supply air temperature according to the cold-hot condition of end automatically, and
The load and room temperature setting value in difference towards room have differences, and the prior art following situations will likely occur:
(1) practical supply air temperature is higher than room temperature setting value, and end actual motion cooling condition, when indoor environment temperature
When degree is higher than setting value, vav terminal demand air quantity increases, and since be sent into room is hot wind, will lead to Interior Temperature Environment
It is further up and deteriorate, while end operation maximum quantity of wind causes fan energy consumption to increase；
(2) practical supply air temperature is lower than room temperature setting value, and end actual motion heating condition, when indoor environment temperature
When degree is lower than setting value, vav terminal demand air quantity increases, and since be sent into room is cold wind, will lead to Interior Temperature Environment
It is further up and deteriorate, while end operation maximum quantity of wind causes fan energy consumption to increase.
Utility model content
The utility model devises a kind of vav terminal system that operating condition automatically switches, and which solve existing change wind
Measure end system control complexity, problem at high cost.
In order to solve above-mentioned technical problem, the utility model uses following scheme:
A kind of vav terminal system that operating condition automatically switches, including vav terminal cabinet, volume damper, wind
Quantity sensor, vav terminal controller and temperature sensor；Volume damper, air flow sensor and temperature sensor point
Not connected with vav terminal controller；Volume damper is set in vav terminal cabinet, is used for regulating air volume；Wind
Quantity sensor is set in vav terminal cabinet, for acquiring air output；Temperature sensor is for detecting room temperature and sending
Air temperature；Vav terminal controller is set to outside vav terminal cabinet, for receive the room temperature, supply air temperature with
And indoor set temperature information, and control the operational mode of switching vav terminal.
Further, temperature sensor includes wind pushing temperature sensor and indoor temperature transmitter；Supply air temperature sensing
Device is set in vav terminal cabinet, for detecting supply air temperature；Indoor temperature transmitter is set to indoor temperature control region, uses
In detection room temperature.
Further, the operational mode of vav terminal controller control vav terminal includes cooling condition and heating work
Condition；When supply air temperature measured value is higher than room temperature setting value, vav terminal runs heating condition；When supply air temperature measured value
Lower than room temperature setting value, vav terminal runs cooling condition.
It further, further include having control panel；Control panel is set on the metope of indoor temperature control region, and and variable air rate
Terminal controller communication connection, for providing system operatio interface.
Further, along air supply direction, wind pushing temperature sensor is set to the front end of volume damper；Air flow sensor is set
It is placed in the rear end of volume damper.
Correspondingly, in conjunction with above scheme, the utility model also provides a kind of control method that operating condition automatically switches, packet
Vav terminal system is included；The vav terminal system is the vav terminal that operating condition described above automatically switches
System.
The vav terminal system and control method that the operating condition automatically switches have the advantages that
(1) operating condition automatic switchover mode is switched over without the refrigerating/heating operating condition artificially to vav terminal,
Working efficiency can be effectively improved, while improving the accuracy of operating condition setting；
(2) correctly switched automatically by system condition, can guarantee that air quantity variable end device, can by correct logic operation
Effectively indoor environment temperature is avoided to deteriorate, makes room temperature control in ideal setting value；
(3) correctly switched automatically by system condition, can guarantee that air quantity variable end device, can by correct logic operation
It effectively avoids air-conditioner set fan energy consumption from increasing, reduces operation of air conditioner cost.
Detailed description of the invention
Fig. 1: the vav terminal system schematic that a kind of operating condition of the utility model automatically switches；
Fig. 2: the operating condition switch logic figure of the utility model air quantity variable end device；
Fig. 3: the refrigerating/heating operating condition operation logic figure of the utility model air quantity variable end device.
Description of symbols:
1-vav terminal cabinet；2-volume dampers；3-air flow sensors；4-wind pushing temperature sensors；Rooms 5-
Interior temperature sensor；6-vav terminal controllers；7-control panels.
Specific embodiment
With reference to the accompanying drawing, the utility model is described further:
Fig. 1 to Fig. 3 shows a kind of vav terminal system that operating condition automatically switches, including vav terminal cabinet
1, volume damper 2, air flow sensor 3, vav terminal controller 6 and temperature sensor；Volume damper 2, air quantity pass
Sensor 3 and temperature sensor are connected with vav terminal controller 6 respectively；Volume damper 2 includes two, is all set in change
In air quantity end cabinet 1, it to be used for regulating air volume；Air flow sensor 3 is set in vav terminal cabinet 1, for acquiring
Air output；Temperature sensor is for detecting room temperature T2 and supply air temperature T1；Vav terminal controller 6 is set to variable air rate
On temperature control region metope outside end cabinet 1, for receiving room temperature, supply air temperature and indoor set temperature information, and
The operational mode of control switching vav terminal.
Preferably, in conjunction with above scheme, as shown in Figure 1 to Figure 3, in the present embodiment, temperature sensor includes air-supply temperature
Spend sensor 4 and indoor temperature transmitter 5；Wind pushing temperature sensor 4 is set in vav terminal cabinet 1, is sent for detecting
Air temperature T1；Indoor temperature transmitter 5 is set to indoor temperature control region, for detecting room temperature T2;Further, along air-supply
Direction, wind pushing temperature sensor 4 are set to the front end of volume damper 2, convenient for detecting the exact value of supply air temperature；Air quantity sensing
Device 3 is set to the rear end of volume damper 2, convenient for detection air output.
Preferably, in conjunction with above scheme, as shown in Figure 1 to Figure 3, in the present embodiment, the control of vav terminal controller 6 becomes
The operational mode of air quantity end includes cooling condition and heating condition；When supply air temperature measured value be higher than room temperature setting value,
Vav terminal runs heating condition；When supply air temperature measured value is lower than room temperature setting value, vav terminal operation refrigeration
Operating condition.
It preferably, further include having control panel 7 in the present embodiment as shown in Figure 1 to Figure 3 in conjunction with above scheme；Control
Panel 7 is set on the metope of indoor temperature control region, and with 6 communication connection of vav terminal controller, for providing system operatio
Interface；Unit supply air temperature is detected by wind pushing temperature sensor, cooling supply automatic switchover mode and Indoor Temperature is arranged in control panel 7
Setting value is spent, unit blasting air temperature measured value and room temperature setting value are compared, determines the refrigerating/heating operation of vav terminal
Operating condition.
The vav terminal system that a kind of operating condition provided by the utility model automatically switches, can be according to practical air-supply temperature
Degree and room temperature setting value automatically switch the refrigerating/heating operating condition of vav terminal, can effectively avoid because of manual operation not
The indoor environment temperature caused by deteriorates, while can reduce air-conditioner set fan energy consumption, to the automatic of air conditioning system with variable
Control has very important realization meaning.
Correspondingly, in conjunction with above scheme, the utility model also provides a kind of control method that operating condition automatically switches, packet
Vav terminal system is included；Vav terminal system is the vav terminal system that operating condition described above automatically switches
System.
Preferably, further comprising the steps of in the present embodiment in conjunction with above scheme:
S1: temperature sensor detection acquisition room temperature T2 and supply air temperature T1;
S2: room temperature T2 or supply air temperature T1 and interior set temperature TSP are compared, and obtain temperature gap Td;
S3: when temperature gap Td is greater than zero；Vav terminal controller controls vav terminal system and is in refrigeration work
Condition；When temperature gap Td is less than zero；Vav terminal controller control vav terminal system is in heating condition.
Preferably, in conjunction with above scheme, in the present embodiment, temperature sensor includes wind pushing temperature sensor and Indoor Temperature
Spend sensor；Wind pushing temperature sensor is set in vav terminal cabinet, for detecting supply air temperature；Indoor temperature transmitter
It is set to indoor temperature control region, for detecting room temperature；The operational mode of vav terminal includes automatic running pattern, refrigeration
Mode and heating mode；
When vav terminal is under automatic running pattern, comprising the following steps:
S10: wind pushing temperature sensor detection acquisition supply air temperature T1；
S20: when supply air temperature T1 is greater than interior set temperature TSP, vav terminal controller controls vav terminal
System switches to heating mode；When supply air temperature T1 is less than interior set temperature TSP, the control of vav terminal controller becomes wind
Amount end system switches to refrigeration mode；Such as: under automatic running pattern, currently practical operational mode is refrigeration mode, when
T1(26 DEG C of supply air temperature collection value) >+0.5 DEG C of room temperature setting value TSP (24 DEG C), actual motion pattern switching to heating mould
Formula；The fluctuation range of indoor set temperature TSP is between 0.5 DEG C；Under automatic running pattern, currently practical operational mode is system
Heat pattern, when T1(22 DEG C of supply air temperature collection value) < -0.5 DEG C of room temperature setting value TSP (24 DEG C), actual motion mode is cut
Change to refrigeration mode；Or
When vav terminal in cooling mode when, comprising the following steps:
S10: indoor temperature transmitter detection acquisition room temperature T2；Specifically: according to indoor temperature transmitter collection value
The difference of room temperature setting value TSP on T2 and control panel calculates the demand wind of vav terminal by proportional integration algorithm
Amount, demand air quantity change between maximum setting air quantity and minimum setting air quantity, and room temperature is made to maintain setting value；
S20: when room temperature T2 is greater than interior set temperature TSP, vav terminal controller controls vav terminal
System increases air quantity；When room temperature T2 is less than interior set temperature TSP, vav terminal controller controls vav terminal
System reduces air quantity；Such as: when T1(25 DEG C of room temperature) > room temperature setting value TSP (24 DEG C), the demand of vav terminal
Air quantity increases；When T1(23 DEG C of room temperature) < room temperature setting value TSP (24 DEG C), the demand air quantity of vav terminal reduces；
Or
When vav terminal in a heating mode when, comprising the following steps:
S10: indoor temperature transmitter detection acquisition room temperature T2；
S20: the vav terminal controller calculates the demand air quantity of vav terminal by proportional integration algorithm；Institute
It states demand air quantity and changes between maximum setting air quantity and minimum setting air quantity, so that room temperature is in setting value；Such as: when
T2(23 DEG C of room temperature) > room temperature setting value TSP (22 DEG C), the demand air quantity reduction of vav terminal；Work as room temperature
T2(21 DEG C) < room temperature setting value TSP (22 DEG C), the demand air quantity increase of vav terminal.
Preferably, in conjunction with above scheme, in the present embodiment, when the vav terminal in a heating mode when, further include
Following steps:
S30: when room temperature T2 is greater than interior set temperature TSP, the vav terminal controller controls the change
Air quantity end system reduces air quantity；When room temperature T2 is less than interior set temperature TSP, the vav terminal controller control
It makes the vav terminal system and increases air quantity.
Using the above scheme, compared with prior art, since the refrigerating/heating operating condition of air quantity variable end device can be achieved certainly
Dynamic switching, the beneficial effects of the utility model are:
(1) operating condition automatic switchover mode is switched over without the refrigerating/heating operating condition artificially to vav terminal,
Working efficiency can be effectively improved, while improving the accuracy of operating condition setting；
(2) correctly switched automatically by system condition, can guarantee that air quantity variable end device, can by correct logic operation
Effectively indoor environment temperature is avoided to deteriorate, makes room temperature control in ideal setting value；
(3) correctly switched automatically by system condition, can guarantee that air quantity variable end device, can by correct logic operation
It effectively avoids air-conditioner set fan energy consumption from increasing, reduces operation of air conditioner cost.
Illustrative description has been carried out to the utility model above in conjunction with attached drawing, it is clear that the realization of the utility model not by
The limitation of aforesaid way, if the method concept of the utility model and the various improvement of technical solution progress are used, or without
It improves and the conception and technical scheme of the utility model is directly applied into other occasions, in the protection scope of the utility model
It is interior.
Claims (5)
1. the vav terminal system that a kind of operating condition automatically switches, which is characterized in that including vav terminal cabinet, air quantity
Regulating valve, air flow sensor, vav terminal controller and temperature sensor；The volume damper, air quantity sensing
Device and the temperature sensor are connected with the vav terminal controller respectively；
The volume damper is set in the vav terminal cabinet, is used for regulating air volume；
The air flow sensor is set in the vav terminal cabinet, for acquiring air output；
The temperature sensor is for detecting room temperature and supply air temperature；
The vav terminal controller is set to outside the vav terminal cabinet, for receiving the room temperature, described
Supply air temperature and indoor set temperature information, and control the operational mode for switching the vav terminal.
2. the vav terminal system that operating condition according to claim 1 automatically switches, which is characterized in that the temperature
Sensor includes wind pushing temperature sensor and indoor temperature transmitter；The wind pushing temperature sensor is set to the variable air rate
In tail end box body, for detecting supply air temperature；The indoor temperature transmitter is set to indoor temperature control region, for detecting interior
Temperature.
3. the vav terminal system that operating condition according to claim 1 automatically switches, which is characterized in that the change wind
It includes cooling condition and heating condition that amount terminal controller, which controls the operational mode of the vav terminal,；When supply air temperature is surveyed
Value is higher than room temperature setting value, and vav terminal runs heating condition；When supply air temperature measured value is set lower than room temperature
Value, vav terminal run cooling condition.
4. the vav terminal system that operating condition according to claim 1 automatically switches, which is characterized in that further include having
Control panel；The control panel is set on the metope of indoor temperature control region, and is connected with the vav terminal controller communication
It connects, for providing system operatio interface.
5. the vav terminal system that operating condition according to claim 2 automatically switches, which is characterized in that along air-supply side
To the wind pushing temperature sensor is set to the front end of the volume damper；The air flow sensor is set to the air quantity
The rear end of regulating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820212523.6U CN208458198U (en) | 2018-02-07 | 2018-02-07 | A kind of vav terminal system that operating condition automatically switches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820212523.6U CN208458198U (en) | 2018-02-07 | 2018-02-07 | A kind of vav terminal system that operating condition automatically switches |
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| Publication Number | Publication Date |
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| CN208458198U true CN208458198U (en) | 2019-02-01 |
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ID=65155212
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820212523.6U Active CN208458198U (en) | 2018-02-07 | 2018-02-07 | A kind of vav terminal system that operating condition automatically switches |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108224695A (en) * | 2018-02-07 | 2018-06-29 | 杭州源牌科技股份有限公司 | The vav terminal system and control method that a kind of operating condition automatically switches |
-
2018
- 2018-02-07 CN CN201820212523.6U patent/CN208458198U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108224695A (en) * | 2018-02-07 | 2018-06-29 | 杭州源牌科技股份有限公司 | The vav terminal system and control method that a kind of operating condition automatically switches |
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