CN215723696U

CN215723696U - BMS system wind pressure automatic control device

Info

Publication number: CN215723696U
Application number: CN202122336195.5U
Authority: CN
Inventors: 周利恒; 林志展; 曹中山; 韩辉
Original assignee: Jiangsu Utions Technology Co ltd
Current assignee: Jiangsu Utions Technology Co ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-02-01
Anticipated expiration: 2031-09-26

Abstract

The utility model relates to an automatic wind pressure control device of a BMS system, wherein an air supply system comprises an air conditioning unit and a pipeline connected in series for supplying air, wherein, air conditioning unit includes the new trend section that sets up according to air inlet direction order, first filter segment, the fan section, second filter segment and air-out section, BMS system wind pressure automatic control device is used for carrying out air supply control to air supply system, BMS system wind pressure automatic control device includes the unit controller, air supply wind pressure sensor and two at least pressure difference transmitters, air supply wind pressure sensor, pressure difference transmitter and unit controller communication connection, the control output end of unit controller is connected with the variable frequency fan electricity that the fan section set up, air supply wind pressure sensor sets up in the air outlet department of air-out section, respectively at the front and back side of first filter segment, the front and back side of second filter segment is provided with the pressure difference transmitter that is used for detecting the pressure difference around. This application can stabilize effectual control BMS system's air supply wind pressure, guarantees BMS system's normal operating.

Description

BMS system wind pressure automatic control device

Technical Field

The utility model relates to the technical field of air supply control, in particular to an automatic air pressure control device of a BMS system.

Background

BMS (building Management system) building equipment Management system, referred to as BMS system for short, is a system that performs comprehensive Management of building equipment monitoring systems, public safety systems, and the like. The BMS system is suitable for selecting and configuring the following functions of management, control, monitoring, display, fault alarm and the like according to the condition of the building equipment: refrigerating system, heating power system, chilled water, cooling water temperature and pressure, refrigerating pump, cooling water pump, cooling tower fan, air conditioning unit, Variable Air Volume (VAV) system, air supply and exhaust system, water pump and liquid level of water supply system and sewage treatment system, power supply and distribution system, lighting, elevator and escalator, etc.

Wherein, to air conditioning unit's work, air conditioning unit is after long-time operation, and air conditioning unit filters outdoor new trend and room return air and leads to the filter to block up, and the air supply wind pressure reduces thereupon after the filter blocks up, leads to unable required invariable wind pressure of keeping BMS system. Therefore, how to monitor the filter and the air supply so as to ensure the constant air pressure required by the BMS system is a technical problem which needs to be solved urgently at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an automatic wind pressure control device of a BMS system, which can stably and effectively control the wind pressure of the BMS system and ensure the normal operation of the BMS system.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides an automatic wind pressure control device of a BMS system, an air supply system comprises an air conditioning unit and a pipeline connected in series for supplying air, wherein, the air conditioning unit comprises a fresh air section, a first filter section, a fan section, a second filter section and an air outlet section which are arranged in sequence according to the air inlet direction, the BMS system wind pressure automatic control device is used for controlling the air supply of the air supply system, the BMS system wind pressure automatic control device comprises a unit controller, an air supply wind pressure sensor and at least two pressure difference transmitters, the air supply wind pressure sensor and the pressure difference transmitters are in communication connection with the unit controller, the control output end of the unit controller is electrically connected with a variable frequency fan arranged on the fan section, the air supply wind pressure sensor is arranged at the air outlet of the air outlet section, and the pressure difference transmitter for detecting the front and back pressure difference is arranged on the front and back sides of the first filtering section and the front and back sides of the second filtering section respectively.

Optionally, a humidifier is arranged between the fan section and the second filter section, an air supply temperature and humidity detection sensor is arranged at an air outlet of the air outlet section, a fresh air temperature and humidity detection sensor is arranged at an air inlet of the fresh air section, signal output ends of the air supply temperature and humidity detection sensor and the fresh air temperature and humidity detection sensor are in communication connection with the unit controller, and the unit controller is connected with the humidifier.

Optionally, the new trend department has still seted up the return air inlet department is provided with return air temperature and humidity detection sensor, return air wind pressure sensor, return air temperature and humidity detection sensor, return air wind pressure sensor all with the unit controller communication connection.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

according to the automatic wind pressure control device of the BMS system, the front wind pressure and the rear wind pressure of the filter section are monitored through the differential pressure transmitter, so that the blocking condition of the filter in the filter section can be effectively judged, the reliable detection of the filter section is realized, and the maintenance of the filter section is convenient. The overall structure of device is simple, convenient operation, and control effect is splendid, can stabilize, effectual control BMS air supply wind pressure, guarantees BMS system normal operating.

Drawings

Some specific embodiments of the utility model will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic structural view of an automatic wind pressure control apparatus of a BMS system according to an embodiment of the present invention.

Wherein the reference numerals are as follows:

1. the air conditioner comprises an air conditioning unit 11, a fresh air section 12, a first filtering section 13, a fan section 14, a second filtering section 15, an air outlet section 16 and a variable frequency fan;

2. measuring a wind speed sheet;

3. a differential pressure transmitter;

41. air supply temperature and humidity detection sensor 42 and air supply pressure sensor;

51. a return air temperature and humidity detection sensor 52 and a return air pressure sensor;

6. fresh air temperature and humidity detection sensor.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

This embodiment describes a BMS system wind pressure automatic control device, as shown in fig. 1, the air supply system includes air conditioning unit 1 and the pipeline of series connection air supply, air conditioning unit 1 inserts in each room that uses the air conditioner through the pipeline of supplying air, and the rethread return air pipeline is with return air retrieval and utilization to the return air inlet of air conditioning unit 1. Wherein, the air conditioning unit 1 comprises a fresh air section 11, a first filter section 12, a fan section 13, a second filter section 14 and an air outlet section 15 which are arranged according to the sequence of the air inlet direction, the BMS system wind pressure automatic control device is used for controlling the air supply of the air supply system, the BMS system wind pressure automatic control device comprises a unit controller, an air supply wind pressure sensor 42 and two pressure difference transmitters 3, the air supply wind pressure sensor 42 and the pressure difference transmitters 3 are connected with the unit controller in a communication way, the control output end of the unit controller is electrically connected with a variable frequency fan 16 arranged on the fan section 13, air supply wind pressure sensor 42 set up in air outlet department of air-out section 15, air supply wind pressure sensor 42 with unit controller communication connection is provided with respectively in the front and back side of first filter stage 12, the front and back side of second filter stage 14 and is used for detecting the pressure difference around pressure transmitter 3. The unit controller is not shown in the figure, but the main body of the unit controller is connected with each sensor for detecting temperature, wind pressure and humidity, so as to control the variable frequency fan 16 and the humidifier according to the detection result, the unit controller can be implemented by a hardware control component of the air conditioning unit 1, and can also be implemented by an external control chip, a processor or even a computer, and only needs to properly adjust a control mechanism, and the part of control means belongs to the prior art and is not described herein again.

The automatic wind pressure control device of the BMS system of the embodiment detects the pressure difference of the front side and the rear side of the first filter segment 12 through one pressure difference transmitter 3, and detects the pressure difference of the front side and the rear side of the second filter segment 14 through the other pressure difference transmitter 3, so that the pressure difference reaches a set threshold value and then is fed back to the unit controller, and an alarm or a prompt is given out to remind the user of replacing or cleaning the filter in the filter segment.

The air output of the air conditioning unit 1 can be additionally detected through the air speed measuring sheet 2, if the air output is different from a set threshold value, the variable frequency fan 16 is adjusted through the unit controller, and therefore the air output pressure is close to the constant air output.

In order to guarantee that the control result of wind pressure is accurate as far as possible, the wind pressure of comprehensive return air and new trend is in the new trend section 11 department has still seted up the return air inlet department is provided with return air pressure sensor 52, return air pressure sensor 52 all with unit controller communication connection. Through the wind pressure monitoring, the unit controller performs PID frequency adjustment on the variable frequency fan 16, so that the final wind pressure of the wind outlet is equal to the constant wind pressure.

In addition, be provided with the humidifier between fan section 13 and the second filter stage 14 the air outlet department that is located air outlet section 15 is provided with air supply temperature and humidity detection sensor 41 the air inlet department of new trend section 11 is provided with new trend temperature and humidity detection sensor 61 air return department is provided with return air temperature and humidity detection sensor 51, air supply temperature and humidity detection sensor 41, new trend temperature and humidity detection sensor 61, return air temperature and humidity detection sensor 51's signal output part all with the unit controller communication connection, the unit controller with the humidifier links to each other. The humidity of the final air supply can be adjusted to be constant adaptively through monitoring the temperature and humidity values of all the nodes.

In summary, the BMS system wind pressure automatic control device monitors the front wind pressure and the rear wind pressure of the filter segment through the differential pressure transmitter 3, and can effectively judge the blocking condition of the filter in the filter segment, thereby realizing the reliable detection of the filter segment and facilitating the maintenance of the filter segment. The overall structure of device is simple, convenient operation, and control effect is splendid, can stabilize, effectual control BMS air supply wind pressure, guarantees BMS system normal operating.

The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the utility model, and not to limit the scope of the utility model, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.

Claims

1. An automatic wind pressure control device of a BMS system comprises an air conditioning unit and a pipeline connected in series for supplying air, wherein, the air conditioning unit comprises a fresh air section, a first filtering section, a fan section, a second filtering section and an air outlet section which are arranged in sequence according to the air inlet direction, the BMS system wind pressure automatic control device is used for controlling the air supply of the air supply system, it is characterized in that the BMS system wind pressure automatic control device comprises a unit controller, an air supply wind pressure sensor and at least two pressure difference transmitters, the air supply wind pressure sensor and the pressure difference transmitters are in communication connection with the unit controller, the control output end of the unit controller is electrically connected with a variable frequency fan arranged on the fan section, the air supply wind pressure sensor is arranged at the air outlet of the air outlet section, and the pressure difference transmitter for detecting the front and back pressure difference is arranged on the front and back sides of the first filtering section and the front and back sides of the second filtering section respectively.

2. The automatic wind pressure control device of BMS according to claim 1, wherein a humidifier is disposed between the fan section and the second filter section, an air supply temperature and humidity sensor is disposed at an air outlet of the air outlet section, a fresh air temperature and humidity sensor is disposed at an air inlet of the fresh air section, signal output terminals of the air supply temperature and humidity sensor and the fresh air temperature and humidity sensor are both in communication connection with the unit controller, and the unit controller is connected with the humidifier.

3. The BMS system wind pressure automatic control device according to claim 1 or 2, wherein a return air inlet is further arranged at the fresh air section, a return air temperature and humidity detection sensor and a return air wind pressure sensor are arranged at the return air inlet, and the return air temperature and humidity detection sensor and the return air wind pressure sensor are both in communication connection with the unit controller.