CN210135648U - Variable air volume fresh air system based on number feedback adjustment - Google Patents
Variable air volume fresh air system based on number feedback adjustment Download PDFInfo
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- CN210135648U CN210135648U CN201920416824.5U CN201920416824U CN210135648U CN 210135648 U CN210135648 U CN 210135648U CN 201920416824 U CN201920416824 U CN 201920416824U CN 210135648 U CN210135648 U CN 210135648U
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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 a variable blast volume new trend system based on number feedback control has such characteristic, include: the air supply pipeline is provided with an air inlet which is arranged at a proper air taking position on the outer vertical surface of the building; one end of each air supply branch pipe is communicated with the air supply pipeline, and the other end of each air supply branch pipe is an air supply outlet and is arranged in a room; the fresh air unit is arranged in a fresh air machine room or a suspended ceiling layer, is connected with the air supply pipeline, and is internally provided with a fresh air valve, a primary filter, a medium-efficiency filter, a temperature changing device, a high-pressure spray humidifier and a variable-frequency air feeder in sequence; and the control part is integrated in a building automatic control system, wherein the air supply outlet is also provided with an electric air volume regulating valve and an orifice plate air volume measuring device, an infrared sensor is also arranged in a room, a static pressure measuring point is also arranged between the variable-frequency air blower and the tail end of the air supply pipeline, an anti-freezing switch is also arranged between the intermediate-efficiency filter and the water heating and cooling device, and the two sides of the primary-efficiency filter, the intermediate-efficiency filter and the variable-frequency air blower are all connected with a differential pressure switch.
Description
Technical Field
The utility model belongs to warm logical field, concretely relates to variable blast volume new trend system based on number feedback control.
Background
In a conventional fresh air system, fresh air is generally supplied in accordance with the opening and closing of an air conditioning system, thereby improving the indoor air quality. However, the fresh air system only has the function of switching the indoor air supply quantity, and does not have the function of calculating the required fresh air quantity according to the number of indoor personnel so as to adjust the opening of the fresh air electric adjusting valve, so that the energy-saving purpose is achieved on the basis of meeting the requirement of indoor comfort level.
In addition, the fresh air supply valve in part of the fresh air system room is linked with the running state of the room fan coil, and when the indoor fan coil stops running, the fresh air supply valve can be closed.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a solve above-mentioned problem and go on, aim at provides a variable air volume new trend system based on number feedback control.
The utility model provides a variable blast volume new trend system based on number feedback control has such characteristic, include: the air supply pipeline is provided with an air inlet which is arranged at a proper air taking position on the outer vertical surface of the building; one end of each air supply branch pipe is communicated with the air supply pipeline, and the other end of each air supply branch pipe is an air supply outlet and is arranged in a room; the fresh air unit is arranged in a fresh air machine room or a suspended ceiling layer, is connected with the air supply pipeline, and is internally provided with a fresh air valve, a primary filter, a medium-efficiency filter, a temperature changing device, a high-pressure spray humidifier and a variable-frequency air feeder in sequence; and the control part is integrated in a building automatic control system and used for carrying out intelligent control, wherein the air supply outlet is also provided with an electric air volume regulating valve and a pore plate air volume measuring device arranged behind the electric air volume regulating valve, an infrared sensor is also arranged in the room, a static pressure measuring point is also arranged between the variable-frequency air blower and the tail end of the air supply pipeline, an anti-freezing switch is also arranged between the intermediate-efficiency filter and the temperature changing device, and two sides of the primary-efficiency filter, the intermediate-efficiency filter and the variable-frequency air blower are connected with a differential pressure switch.
The utility model provides a pair of in variable air volume new trend system based on number feedback control, can also have such characteristic: the variable-frequency blower comprises a variable-frequency motor and a multi-blade centrifugal wind wheel which are mutually connected through a connecting shaft.
The utility model provides a pair of in variable air volume new trend system based on number feedback control, can also have such characteristic: the temperature changing device is a surface cooler, a water inlet pipe of the surface cooler is connected with a cold source water outlet pipe and a heat source water outlet pipe, a water outlet pipe of the surface cooler is connected with the cold source water inlet pipe and the heat source water inlet pipe, and a cold water coil return valve and a hot water coil return valve are arranged on the surface cooler.
The utility model provides a pair of in variable air volume new trend system based on number feedback control, can also have such characteristic: wherein, the outlet of the frequency conversion blower is also provided with a temperature sensor and a humidity sensor.
The utility model provides a pair of in variable air volume new trend system based on number feedback control, can also have such characteristic: wherein, a smoke sensor is also arranged in the room.
The utility model provides a pair of in variable air volume new trend system based on number feedback control, can also have such characteristic: the electric air volume adjusting valve, the differential pressure switch, the anti-freezing switch, the static pressure measuring point, the infrared sensor, the smoke sensor and the orifice plate air volume measuring device are all in communication connection with the control part.
Action and effect of the utility model
According to the utility model relates to a variable air volume fresh air system based on number feedback, because the supply-air outlet is provided with the electric air volume adjusting valve and the orifice plate air volume measuring device, the infrared sensor is arranged in the room, and the number of people in the room is monitored by adopting the infrared sensor and the electric air volume adjusting valve is adjusted according to the feedback number information, so as to change the indoor fresh air supply volume, therefore, the fresh air supply volume can be adjusted according to the indoor actual number, and the requirement of energy saving is met while the indoor air quality is ensured; because the static pressure measuring point and the variable frequency air feeder are arranged, the static pressure change is monitored through the static pressure measuring point, and the frequency of the variable frequency air feeder is adjusted according to the static pressure monitoring condition, so that the indoor fresh air supply quantity is adjusted, and the indoor air quality requirement of people can be met, and the purpose of energy conservation can be achieved. Therefore, the utility model discloses a variable air volume new trend system is energy-concerving and environment-protective based on number feedback to can supply with by the effectual new amount of wind of assurance, improve the indoor air quality, satisfy indoor personnel's healthy demand.
Drawings
Fig. 1 is a front view of a variable air volume fresh air system based on number feedback in an embodiment of the present invention.
Detailed Description
In order to make the technical means and functions of the present invention easy to understand, the present invention will be described in detail with reference to the following embodiments and accompanying drawings.
Fig. 1 is a front view of a variable air volume fresh air system based on number feedback in an embodiment of the present invention.
As shown in fig. 1, the variable air volume fresh air system 100 based on people number feedback of the embodiment includes an air supply duct 1, a plurality of air supply branch pipes 2, and a fresh air handling unit 3.
The air supply pipeline 1 is provided with an air inlet 4 arranged at an air intake position on the outer vertical surface of the building.
And one end of each air supply branch pipe 2 is communicated with the air supply pipeline 1, and the other end of each air supply branch pipe is an air supply outlet 5 and is arranged in a room.
The fresh air unit 3 is arranged in a fresh air machine room or a suspended ceiling layer, is connected with the air supply pipeline 1, and is internally provided with a fresh air valve 6, a primary filter 7, a medium-efficiency filter 8, a temperature changing device 9, a high-pressure spray humidifier 10 and a variable-frequency air supply blower 11 in sequence.
The primary filter 7 and the intermediate filter 8 are used for filtering pollutants such as PM2.5 and the like, so that the quality of fresh air is ensured.
The temperature changing device 9 is used for heating or cooling the fresh air, and the high-pressure spray humidifier 10 is used for humidifying the fresh air, so that different comfort level requirements of users at all levels are met.
An anti-freezing switch 12 is further arranged between the intermediate-efficiency filter 8 and the temperature changing device 9, in winter, when the temperature of hot water is reduced or the hot water stops being supplied due to some reason, in order to prevent frost cracking caused by too low temperature in the unit, the anti-freezing switch 12 sends a stop signal to the control part, the control part stops the variable-frequency air feeder 11 after receiving the stop signal, simultaneously closes the fresh air valve 6, and when the hot water returns to be supplied, the variable-frequency air feeder 11 is restarted, and the fresh air valve 6 is opened, so that the normal operation of the system is recovered.
The two sides of the primary filter 7, the intermediate filter 8 and the variable frequency blower 11 are all connected with a pressure difference switch 13.
The differential pressure switch 13 is used to determine the resistance of the primary filter 7 and the intermediate filter 8, and thereby determine whether the primary filter 7 and the intermediate filter 8 need to be cleaned or replaced.
The temperature changing device 9 is a surface cooler, a water inlet pipe of the surface cooler is connected with a cold source water outlet pipe and a heat source water outlet pipe, a water outlet pipe of the surface cooler is connected with a cold source water inlet pipe and a heat source water inlet pipe, a cold water coil water return valve and a hot water coil water return valve are arranged on the surface cooler, and the water supply amount can be adjusted by adjusting the opening degree of the cold water coil water return valve and the opening degree of the hot water coil water return valve, so that the environment is comfortable indoors, and meanwhile, the.
The variable frequency blower 11 comprises a variable frequency motor and a multi-blade centrifugal wind wheel which are mutually connected through a connecting shaft.
The control of the variable frequency blower 11 mainly includes start-stop (XS), local and remote switching (CR), fault alarm (XA), and operation status monitoring (YI) of the variable frequency blower 11.
A temperature sensor 14 and a humidity sensor 15 are also arranged at the outlet of the variable frequency blower 11.
And the control part is integrated in the building automatic control system and is used for carrying out intelligent control.
The air supply outlet 5 is also provided with an electric air volume adjusting valve 16 and a pore plate air volume measuring device 17 arranged behind the electric air volume adjusting valve 16, an infrared sensor 18 is further arranged in the room, the pore plate air volume measuring device 17 calculates the current air supply volume according to the front-back pressure difference measurement value of the pore plate, the infrared sensor 18 is used for sensing the number of people in the room and feeding the number information back to the control part, the control part calculates the indoor required fresh air volume according to the number of people information and compares the indoor required fresh air volume with the current air supply volume, and the electric air volume adjusting valve 16 is adjusted to adjust the fresh air supply volume to.
When the indoor personnel leave the room, the electric air volume adjusting valve 16 is closed, so that the environment is protected and the energy is saved while the indoor environment is comfortable.
A static pressure measuring point 19 is arranged between the variable frequency blower 11 and the tail end of the air supply pipeline 1, when the electric air volume adjusting valve 16 adjusts the fresh air supply volume, the static pressure measuring point 19 monitors the change of the static pressure value, and adjusts the frequency of the variable frequency blower 11 to adjust the total air supply volume, thereby achieving the energy-saving requirement by using the frequency adjustment.
A smoke sensor is also arranged in the room.
The electric air volume adjusting valve 16, the differential pressure switch 13, the anti-freezing switch 12, the static pressure measuring point 19, the infrared sensor 18, the smoke sensor and the orifice plate air volume measuring device 17 are all in communication connection with the control part.
The variable air volume fresh air system 100 based on the number feedback of the people in the embodiment also has the function of seasonal control, wherein the seasonal control comprises summer working conditions, winter working conditions and transition season working conditions, when the system is in the summer working conditions, the water return valve of the hot water coil is closed, the high-pressure spray humidifier 10 is closed, meanwhile, the opening degree of the water return valve of the cold water coil is adjusted, the fresh air is processed to a required state point,
when the device is in a working condition in winter, the return valve of the cold water coil is closed, the opening of the return valve of the hot water coil is adjusted to control the temperature of the fresh air supply, and the humidity of the fresh air is controlled by controlling the on-off of the high-pressure spray humidifier 10,
when the indoor air supply system is in a working condition of a transition season, when the enthalpy value of outdoor air is lower than the indoor enthalpy value, the temperature changing device 9 and the high-pressure spray humidifier 10 are closed, so that fresh air is directly sent into a room after being filtered by the primary filter 7 and the intermediate filter 8 to bear indoor load, and if the fresh air cannot bear the indoor load completely, the opening degree of a return valve of the cold water coil is adjusted to supply air and reduce temperature, so that the indoor air supply requirement is met.
The working process of the variable air volume fresh air system 100 based on the number feedback of people in the embodiment is as follows:
the new trend that gets into through air intake 4 passes through new trend unit 3 earlier, again in proper order through the processing back of primary filter 7, medium efficiency filter 8, temperature varying device 9, high pressure spraying humidifier 10 and frequency conversion forced draught blower 11, get into many air supply branch 2, and in will handling the new trend through supply-air outlet 5 delivered to each room, utilize infrared sensor 18 to respond to the number of people in the room simultaneously, and control electric air volume control valve 16 that corresponds according to response feedback number of people through the control part, thereby intelligent change air output.
Effects and effects of the embodiments
According to the variable air volume fresh air system based on number feedback of people, the electric air volume adjusting valve and the pore plate air volume measuring device are arranged at the air supply outlet, the infrared sensor is arranged in the room, the number of people in the room is monitored by adopting the infrared sensor, and the electric air volume adjusting valve is adjusted according to the feedback number information, so that the indoor fresh air volume is changed, the fresh air volume can be adjusted according to the actual number of people in the room, the indoor air quality is ensured, and meanwhile, the energy-saving requirement is met; because the static pressure measuring point and the variable frequency air feeder are arranged, the static pressure change is monitored through the static pressure measuring point, and the frequency of the variable frequency air feeder is adjusted according to the static pressure monitoring condition, so that the indoor fresh air supply quantity is adjusted, and the indoor air quality requirement of people can be met, and the purpose of energy conservation can be achieved. Therefore, the variable air volume fresh air system based on number feedback of the embodiment is energy-saving and environment-friendly, can effectively guarantee fresh air volume supply, improves indoor air quality, and meets the health requirements of indoor personnel.
In addition, the anti-freezing switch is also arranged, and the anti-freezing switch can control the system to stop running when the temperature of hot water is reduced in winter or the hot water stops supplying, so that the phenomenon of frost cracking in winter can be effectively prevented.
Further, because still be equipped with primary filter, medium efficiency filter, alternating temperature device and high pressure spraying humidifier, so, can effectually ensure to carry out indoor new air quality to can handle new air, thereby satisfy the demand of different crowds to the room air.
In addition, because the variable frequency motor is used as a driving device of the multi-blade centrifugal wind wheel, the system is more energy-saving, the variable frequency motor and the multi-blade centrifugal wind wheel are connected through a shaft, and various actual environments can be met by adjusting parameters such as wind pressure, wind volume and the like of the multi-blade centrifugal wind wheel, so that the system has good applicability, and in addition, the used variable frequency blower has the advantages of low noise, large wind volume, large wind pressure range and the like, and can effectively ensure the air supply quality.
The above embodiments are preferred examples of the present invention, and are not intended to limit the scope of the present invention.
Claims (5)
1. The utility model provides a variable air volume new trend system based on number feedback adjusts which characterized in that includes:
the air supply pipeline is provided with an air inlet which is arranged at a proper air taking position on the outer vertical surface of the building;
one end of each air supply branch pipe is communicated with the air supply pipeline, and the other end of each air supply branch pipe is an air supply outlet and is arranged in a room;
the fresh air unit is arranged in a fresh air machine room or a suspended ceiling layer, is connected with the air supply pipeline, and is internally provided with a fresh air valve, a primary filter, a medium-efficiency filter, a temperature changing device, a high-pressure spray humidifier and a variable-frequency air feeder in sequence; and
a control part integrated in the building automatic control system for intelligent control,
wherein the air supply outlet is also provided with an electric air volume adjusting valve and a pore plate air volume measuring device arranged behind the electric air volume adjusting valve, an infrared sensor is also arranged in the room,
a static pressure measuring point is also arranged between the variable frequency blower and the tail end of the air supply pipeline,
an anti-freezing switch is also arranged between the middle-effect filter and the temperature changing device,
the two sides of the primary filter, the intermediate filter and the variable-frequency blower are all connected with a pressure difference switch,
a smoke sensor is also arranged in the room.
2. The variable air volume fresh air system based on the feedback regulation of the number of people as claimed in claim 1, wherein:
the variable-frequency blower comprises a variable-frequency motor and a multi-blade centrifugal wind wheel which are mutually connected through a connecting shaft.
3. The variable air volume fresh air system based on the feedback regulation of the number of people as claimed in claim 1, wherein:
wherein the temperature changing device is a surface cooler, a water inlet pipe of the surface cooler is connected with a cold source water outlet pipe and a heat source water outlet pipe, a water outlet pipe of the surface cooler is connected with a cold source water inlet pipe and a heat source water inlet pipe,
and a cold water coil return valve and a hot water coil return valve are arranged on the surface cooler.
4. The variable air volume fresh air system based on the feedback regulation of the number of people as claimed in claim 1, wherein:
wherein, frequency conversion forced draught blower exit still is provided with temperature sensor and humidity transducer.
5. The variable air volume fresh air system based on the feedback regulation of the number of people as claimed in claim 1, wherein:
the electric air volume adjusting valve, the differential pressure switch, the anti-freezing switch, the static pressure measuring point, the infrared sensor, the smoke sensor and the orifice plate air volume measuring device are all in communication connection with the control part.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920416824.5U CN210135648U (en) | 2019-03-29 | 2019-03-29 | Variable air volume fresh air system based on number feedback adjustment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920416824.5U CN210135648U (en) | 2019-03-29 | 2019-03-29 | Variable air volume fresh air system based on number feedback adjustment |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112254310A (en) * | 2020-10-10 | 2021-01-22 | 广州市夸特电气自动化有限公司 | Digital intelligent fresh air valve and control method thereof |
| CN112628946A (en) * | 2020-12-11 | 2021-04-09 | 北京康宅建筑科技有限公司 | Fresh air energy-saving control system and control method thereof |
| CN113086152A (en) * | 2021-05-10 | 2021-07-09 | 中国船舶重工集团公司第七0四研究所 | Compact variable air volume air conditioner for ship |
| CN113776137A (en) * | 2021-09-23 | 2021-12-10 | 江苏苏净工程建设有限公司 | Energy-saving toilet control system |
-
2019
- 2019-03-29 CN CN201920416824.5U patent/CN210135648U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112254310A (en) * | 2020-10-10 | 2021-01-22 | 广州市夸特电气自动化有限公司 | Digital intelligent fresh air valve and control method thereof |
| CN112628946A (en) * | 2020-12-11 | 2021-04-09 | 北京康宅建筑科技有限公司 | Fresh air energy-saving control system and control method thereof |
| CN113086152A (en) * | 2021-05-10 | 2021-07-09 | 中国船舶重工集团公司第七0四研究所 | Compact variable air volume air conditioner for ship |
| CN113776137A (en) * | 2021-09-23 | 2021-12-10 | 江苏苏净工程建设有限公司 | Energy-saving toilet control system |
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