CN211977172U - Variable air volume end device with air supply cold and heat metering function - Google Patents
Variable air volume end device with air supply cold and heat metering function Download PDFInfo
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- CN211977172U CN211977172U CN202020597957.XU CN202020597957U CN211977172U CN 211977172 U CN211977172 U CN 211977172U CN 202020597957 U CN202020597957 U CN 202020597957U CN 211977172 U CN211977172 U CN 211977172U
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- end device
- measuring unit
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- 238000005259 measurement Methods 0.000 claims abstract description 16
- 230000003068 static effect Effects 0.000 claims description 9
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 6
- 239000008397 galvanized steel Substances 0.000 claims description 6
- 238000004378 air conditioning Methods 0.000 abstract description 10
- 238000009529 body temperature measurement Methods 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Air Conditioning Control Device (AREA)
Abstract
The utility model relates to a take variable air volume end device of cold and hot volume measurement function of air supply, including dryer and electrical component box, be provided with amount of wind measuring unit, air regulation unit and temperature measuring unit and support ring in the dryer, air regulation unit and temperature measuring unit set up on the support ring, air regulation unit and temperature measuring unit with the electrical component box links to each other, temperature measuring unit is air supply temperature sensor. The utility model discloses a temperature measuring unit, amount of wind measuring unit, air regulation unit can make the amount of wind measurement of variable air volume end device, control error within 5%, temperature measurement, control error within 1 ℃, the measurement of the cold and hot volume of air supply has fine degree of accuracy, can regard as the cold and hot quantity measurement charge foundation of variable air volume air conditioning system to the cold and hot volume measurement function of air supply has been increased. The arranged air supply temperature sensor is fixed in the variable air volume end device through the support ring, and the installation is convenient.
Description
Technical Field
The utility model belongs to the air conditioning system field, in particular to take variable blast volume end device of cold and hot volume measurement function of air supply.
Background
The variable air volume end device is one of key equipment of the variable air volume air conditioning system. The variable air volume of the air conditioning system adjusts the primary air delivery volume through the end device, tracks the load change and maintains the room temperature.
The variable air volume end device receives the instruction of the system controller and automatically adjusts the primary air volume according to the room temperature. When the indoor load is increased, the air supply volume of the room can be automatically maintained not to exceed the designed maximum air supply volume; when the load of the air conditioner in the room is reduced, the minimum air supply quantity can be kept so as to meet the minimum fresh air quantity and air flow organization requirements; the primary air damper of the end unit can be completely closed when the room served is not in use.
At present, the mainstream variable air volume end device can measure indoor temperature, and carries out air volume measurement, air volume control and final temperature control according to artificial temperature regulation, but cannot calculate the cold and heat volume of air supply to carry out air conditioning charging of a single user.
In order to charge more accurately the air conditioning usage in a variable air volume air conditioning system, it is necessary to calculate the actual cooling and heating consumption of the air supply.
Disclosure of Invention
In view of the above, the present invention provides a variable air volume terminal device with an air supply cold and heat metering function to solve the above problems.
In order to realize the above purpose, the utility model discloses a such take variable air volume end device of cold and hot volume measurement function of air supply, including dryer and electrical component box, its characterized in that: the air duct is characterized in that an air volume measuring unit, an air volume adjusting unit, a temperature measuring unit and a support ring are arranged in the air duct, the air volume adjusting unit and the temperature measuring unit are arranged on the support ring, the air volume adjusting unit and the temperature measuring unit are connected with the electrical component box, and the temperature measuring unit is an air supply temperature sensor.
The utility model discloses further set up: the air quantity measuring unit comprises a full-pressure measuring pipe and a static pressure measuring pipe, the full-pressure measuring pipe is arranged close to the temperature measuring unit, and the static pressure measuring pipe is arranged on one side of the full-pressure measuring pipe and is far away from the temperature measuring unit.
The utility model discloses further set up: the air volume adjusting unit comprises an air valve, an air valve short shaft and an air valve long shaft, the air valve short shaft and the air valve long shaft are arranged oppositely, the air valve short shaft is arranged on the upper end face of the air duct, and the air valve long shaft is arranged on the lower end face of the air duct, extends to one side of the electrical component box and is connected with the electrical component box.
The utility model discloses further set up: the VAV controller is arranged in the electrical component box, the VAV controller is respectively connected with the full-pressure measuring pipe and the static-pressure measuring pipe through hoses, and the VAV controller is connected with the temperature measuring unit through a temperature signal line.
The utility model discloses further set up: the air supply temperature sensor is a PT100 temperature sensor.
The utility model discloses further set up: and an air valve actuator is arranged in the VAV controller and is used for driving a long shaft of the air valve.
The utility model discloses further set up: the air valve is of a circular structure and is made of galvanized steel sheets.
The utility model discloses further set up: the air duct is made of galvanized steel sheets and is hollow cylindrical.
The utility model has the advantages that:
1-the air quantity measurement and control error of the variable air quantity end device can be within plus or minus 5 percent, the temperature measurement and control error can be within plus or minus 1 ℃ through the temperature measurement unit, the air quantity measurement unit and the air quantity regulation unit, the measurement of the air supply cold and heat quantity has good accuracy, and the measurement can be used as the basis for measuring and charging the cold and heat quantity of the variable air conditioning system, thereby increasing the metering function of the air supply cold and heat quantity.
2-the arranged air supply temperature sensor is fixed in the variable air volume end device through the support ring, and the installation is convenient.
Drawings
Fig. 1 is a schematic diagram of an embodiment of the present invention.
FIG. 2 is an enlarged view of the portion A in FIG. 1
Reference numerals: 1. an air duct; 2. an electrical component box; 3. a support ring; 4. an air supply temperature sensor; 5. a full-pressure piezometric tube; 6. a static pressure piezometer tube; 7. an air valve; 8. a short shaft of the air valve; 9. a long shaft of the air valve; 10. a VAV controller; 11. a temperature control panel.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-2, the utility model relates to a variable air volume end device with air supply cold and heat metering function, which comprises an air duct 1 and an electrical component box 2, wherein the air duct 1 is made of galvanized steel sheet and is hollow cylindrical.
Be provided with air volume measuring unit, air regulation unit and temperature measurement unit and support ring 3 in the dryer 1, air volume regulating unit and temperature measurement unit set up on the support ring 3, air volume regulating unit and temperature measurement unit with electrical component box 2 links to each other, temperature measurement unit is air supply temperature sensor 4, air supply temperature sensor 4 is PT100 temperature sensor.
The air quantity measuring unit comprises a full-pressure measuring pipe 5 and a static pressure measuring pipe 6, the full-pressure measuring pipe 5 is arranged close to the temperature measuring unit, and the static pressure measuring pipe 6 is arranged on one side of the full-pressure measuring pipe 5 and is far away from the temperature measuring unit.
The air volume adjusting unit comprises an air valve 7, an air valve short shaft 8 and an air valve long shaft 9, the air valve short shaft 8 and the air valve long shaft 9 are arranged oppositely, the air valve short shaft 8 is arranged on the upper end face of the air duct 1, the air valve long shaft 9 is arranged on the lower end face of the air duct 1, extends towards one side of the electrical component box 2 and is connected with the electrical component box 2, an air valve actuator is arranged inside the VAV controller 10 and is used for driving the air valve long shaft 9, the air valve 7 is of a circular structure and is made of galvanized steel plates.
The electric component box 2 is internally provided with a VAV controller 10, the VAV controller 10 is respectively connected with the full-pressure measuring pipe 5 and the static-pressure measuring pipe 6 through hoses, the VAV controller 10 is connected with the temperature measuring unit through a temperature signal wire, in addition, the VAV controller 10 is also connected with a temperature control panel 11, and the temperature control panel 11 is installed in a room.
The principle of the utility model is as follows: an air supply temperature sensor 4 is added on the existing variable air volume terminal device to measure an air supply temperature T1, a temperature control panel 11 measures a room temperature T2, and an instantaneous air supply cold and heat quantity and an accumulated cold and heat quantity can be calculated according to an air heat exchange formula Q & ltcm & gtt in combination with an air supply volume V, and can be directly used as an air conditioner usage charging basis.
The utility model provides an air supply temperature sensor 4 is PT100 temperature sensor, fixes on the tip of support ring 3, is the instrument that converts temperature variable into the standardized output signal that can convey, and two temperature signal lines are received through the temperature sleeve and are calculated air supply temperature T1 and can show on temperature control panel 11 on VAV controller 1010.
The room temperature control panel 11 is provided with a set of NTC thermistor temperature sensors inside, room temperature T2 can be measured, the room temperature control panel 11 is provided with keys, and the room temperature control panel also has the functions of air conditioner on-off, refrigeration and heating switching, temperature setting adjustment, parameter setting and the like.
The air duct 1 can be made into different specifications to adapt to the load of the air conditioner.
The full-pressure measuring pipe 5 and the static pressure measuring pipe 6 form an air volume measuring unit, the pressure measuring pipe is made of an aluminum pipe, a pressure measuring hole is formed in the aluminum pipe to measure air pressure, and the full-pressure measuring pipe 5 and the static pressure measuring pipe 6 are connected to the VAV controller 10 through hoses to calculate actual air volume.
The air valve 7, the air valve short shaft 8 and the air valve long shaft 9 form an air volume adjusting unit, and the air valve long shaft 9 drives the air valve 73 to rotate under the driving of an air valve actuator in the VAV controller 10 to control the air volume; the air valve 7 is circular, and a sealing ring made of special materials is arranged around the circle, so that air leakage can be prevented under the condition that the air valve 7 is closed.
The temperature measuring unit, the air quantity measuring unit and the air quantity adjusting unit can enable the air quantity measurement and control error of the variable air quantity end device to be within +/-5%, the temperature measurement and control error to be within +/-1 ℃, the measurement of the air supply cold and heat quantity has good accuracy, and the air supply cold and heat quantity measuring and charging device can be used as a cold and heat quantity measuring and charging basis of the variable air quantity air conditioning system.
Through the improvement of the existing variable air volume terminal device, the air volume measurement control and the room temperature measurement control can be carried out, the air supply cold and heat metering function is also added, the air conditioner usage can be directly displayed on the temperature control panel 11, a direct basis is provided for the metering and charging of the variable air volume air conditioning system, and the management of the air conditioner usage by property management departments and users is facilitated.
It should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. The utility model provides a take variable air volume end device of cold and hot volume measurement function of air supply, includes dryer and electrical component box, its characterized in that: the air duct is characterized in that an air volume measuring unit, an air volume adjusting unit, a temperature measuring unit and a support ring are arranged in the air duct, the air volume adjusting unit and the temperature measuring unit are arranged on the support ring, the air volume adjusting unit and the temperature measuring unit are connected with the electrical component box, and the temperature measuring unit is an air supply temperature sensor.
2. The variable air volume end device with the function of measuring the cold and heat supplied air according to claim 1, characterized in that: the air quantity measuring unit comprises a full-pressure measuring pipe and a static pressure measuring pipe, the full-pressure measuring pipe is arranged close to the temperature measuring unit, and the static pressure measuring pipe is arranged on one side of the full-pressure measuring pipe and is far away from the temperature measuring unit.
3. The variable air volume end device with the function of measuring the cold and heat supplied air according to claim 2, characterized in that: the air volume adjusting unit comprises an air valve, an air valve short shaft and an air valve long shaft, the air valve short shaft and the air valve long shaft are arranged oppositely, the air valve short shaft is arranged on the upper end face of the air duct, and the air valve long shaft is arranged on the lower end face of the air duct, extends to one side of the electrical component box and is connected with the electrical component box.
4. The variable air volume end device with the function of measuring the cold and heat supplied air according to claim 3, characterized in that: the VAV controller is arranged in the electrical component box, the VAV controller is respectively connected with the full-pressure measuring pipe and the static-pressure measuring pipe through hoses, and the VAV controller is connected with the temperature measuring unit through a temperature signal line.
5. The variable air volume end device with the function of measuring the cold and heat supplied air according to claim 4, characterized in that: the air supply temperature sensor is a PT100 temperature sensor.
6. The variable air volume end device with the function of measuring the cold and heat supplied air according to claim 5, wherein: and an air valve actuator is arranged in the VAV controller and is used for driving a long shaft of the air valve.
7. The variable air volume end device with the function of measuring the cold and heat supplied air according to claim 6, characterized in that: the air valve is of a circular structure and is made of galvanized steel sheets.
8. The variable air volume end device with the function of measuring the cold and heat supplied air according to claim 7, characterized in that: the air duct is made of galvanized steel sheets and is hollow cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020597957.XU CN211977172U (en) | 2020-04-20 | 2020-04-20 | Variable air volume end device with air supply cold and heat metering function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020597957.XU CN211977172U (en) | 2020-04-20 | 2020-04-20 | Variable air volume end device with air supply cold and heat metering function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211977172U true CN211977172U (en) | 2020-11-20 |
Family
ID=73344432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020597957.XU Expired - Fee Related CN211977172U (en) | 2020-04-20 | 2020-04-20 | Variable air volume end device with air supply cold and heat metering function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211977172U (en) |
-
2020
- 2020-04-20 CN CN202020597957.XU patent/CN211977172U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201120 |
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| CF01 | Termination of patent right due to non-payment of annual fee |