Digital intelligent pressure control type combined air conditioning unit

Abstract

The utility model provides a digital intelligent pressure control type combined air conditioning unit, and mainly relates to the technical field of central air conditioning equipment. A digital intelligent pressure control type combined air conditioning unit comprises an air conditioner cabinet body, a fresh air inlet pipe and a fresh air outlet pipe are arranged at the two ends of the air conditioner cabinet body respectively, and an air blower is arranged on the side, close to the fresh air inlet pipe, in the air conditioner cabinet body. An air temperature adjusting device is arranged on the side, close to the fresh air outlet pipe, of the interior of the air conditioner cabinet body, an air return pipe is arranged on the side, close to the fresh air inlet pipe, of the top face of the air conditioner cabinet body, and an air turbulence assembly is arranged on the side, close to the fresh air inlet pipe, of the interior of the air conditioner cabinet body. And air volume adjusting assemblies are arranged in the fresh air inlet pipe and the fresh air outlet pipe. The air conditioner has the advantages that when the air conditioner is used, the air volume values of the fresh air volume, the air supply volume, the air exhaust volume and the air return volume of a unit can be stabilized through the air volume adjusting assembly, and therefore the pressure difference in a room can be adjusted and controlled.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of air conditioning systems, and specifically relates to an intelligent pressure control type modular air handling unit. Background Technique

[0002] A modular air handling unit refers to a unit that can complete one or several processing functions such as air transportation, mixing, heating, cooling, dehumidification, humidification, filtration, noise reduction, and heat recovery.

[0003] In building places such as hospitals, laboratories, and clean workshops, there are a large number of rooms with clear requirements for air flow control and differential pressure control. For example, in the positive pressure purification operating room of a hospital, in order to ensure the purification environment and avoid external air entering the operating room during the operation process, the room positive pressure needs to be maintained; in the negative pressure purification operating room, in order to avoid the spillage of bacteria and viruses in the operating room and pollute the surrounding environment, the room negative pressure must be ensured, etc.

[0004] An ordinary modular air handling unit can only achieve functions such as air transportation, mixing, heating, cooling, dehumidification, humidification, filtration, noise reduction, and heat recovery, and cannot achieve the function of controlling the room differential pressure. It is necessary to add control dampers, an automatic control system, and control strategies to the ventilation system to achieve room differential pressure control. In the actual project application process, the above-mentioned air handling unit, control dampers, and automatic control system may belong to products of multiple different manufacturers and are implemented by multiple construction units respectively, which are prone to various problems such as construction coordination and product performance mismatch. Therefore, in many actual projects, it is difficult to control the room differential pressure, and it is impossible to maintain a stable differential pressure according to the actual operating conditions after the first commissioning. Content of the Utility Model

[0005] To solve the deficiencies of the prior art, the utility model provides an intelligent pressure control type modular air handling unit, which can not only complete one or several processing functions such as air transportation, mixing, heating, cooling, dehumidification, humidification, filtration, noise reduction, and heat recovery when in use, but also achieve stable control of the room differential pressure.

[0006] The utility model achieves the above object through the following technical solutions:

[0007] A digital intelligence pressure control type combined air conditioning unit, including an air conditioning cabinet main body, a first fan, and a housing. On both sides of the air conditioning cabinet main body, there are respectively a fresh air inlet pipe and a fresh air outlet pipe. Inside the air conditioning cabinet main body, a first fan is provided on one side close to the fresh air inlet pipe. On one side of the top surface of the air conditioning cabinet main body, a housing is integrally and fixedly installed. The housing and the air conditioning cabinet main body are separated by a partition into upper and lower chambers. On both sides of the housing of the fresh air outlet pipe, there are respectively a unit exhaust air inlet pipe and a unit exhaust air outlet pipe. A first air purification and filtration device is fixedly installed inside the air conditioning cabinet main body. On one side of the top surface of the air conditioning cabinet main body close to the fresh air inlet pipe, there is a return air pipe. Inside the air conditioning cabinet main body, on one side close to the fresh air inlet pipe, there is an air turbulence component. Inside the fresh air inlet pipe, the fresh air outlet pipe, and the unit exhaust air inlet pipe, there are all air volume adjustment components;

[0008] Among them, the air volume adjustment component includes:

[0009] Electrically controlled air volume regulating valve. Inside the fresh air inlet pipe, the fresh air outlet pipe, and the unit exhaust air inlet pipe, there are all electrically controlled air volume regulating valves. The electrically controlled air volume regulating valve includes a valve body, a controller, an actuator, etc.;

[0010] Air volume measuring unit. Inside the fresh air inlet pipe, the fresh air outlet pipe, and the unit exhaust air inlet pipe, there are all air volume measuring units for measuring the air volume;

[0011] Differential pressure sensor, and the differential pressure sensor is arranged indoors.

[0012] Furthermore, the air turbulence component includes:

[0013] Grid plates. Two symmetrically arranged grid plates are fixedly installed inside the air conditioning cabinet main body on one side close to the fresh air inlet pipe. The air outlet of the return air pipe is located between the two grid plates;

[0014] Rotating shafts. A number of uniformly distributed rotating shafts are arranged between the two grid plates. Both ends of the rotating shafts are rotatably connected to the corresponding sides of the inner wall of the air conditioning cabinet main body through bearings;

[0015] Wind baffle plates. A number of uniformly distributed wind baffle plates are fixedly installed on the outer circumference of the rotating shafts. The wind baffle plates are strip-shaped structures.

[0016] Furthermore, a second fan is fixedly installed inside the housing, and a second air purification and filtration device is provided on one side of the housing close to the unit exhaust air outlet pipe.

[0017] Furthermore, a unit cold coil and a unit hot coil are fixedly installed inside the air conditioning cabinet main body.

[0018] Furthermore, a visual control panel is fixedly installed on one side of the front of the air conditioning cabinet main body.

[0019] Further, an air humidifier is provided inside the main body of the air-conditioning cabinet, and the air humidifier is located between the unit heat coil and the fresh air outlet duct.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] When the device is in use, the corresponding air volume measuring unit can clearly measure the values of the fresh air volume, supply air volume, exhaust air volume, and return air volume of the unit. According to the actual pressure difference requirements of the room and in accordance with the designed air volume value, through the cooperation of the corresponding electronically controlled air volume regulating valve and the room pressure difference sensor, the fresh air volume, supply air volume, exhaust air volume, and return air volume of the unit can stably discharge air according to the required air volume value. Thus, the air volume sent into the room reaches the air volume difference required to control the pressure difference, and the room pressure difference can be well achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the present utility model;

[0023] Figure 2 is a partial structural diagram of the air turbulence component of the present utility model;

[0024] Figure 3 is a schematic diagram of the air circulation state of the present utility model.

[0025] Reference numerals shown in the drawings: 10, main body of the air-conditioning cabinet; 101, fresh air inlet duct; 102, fresh air outlet duct; 103, unit cold coil; 104, unit heat coil; 20, first fan; 30, housing; 301, unit exhaust air inlet duct; 302, unit exhaust air outlet duct; 303, second fan; 304, partition; 305, second air purification and filtration device; 40, first air purification and filtration device; 50, return air duct; 60, air turbulence component; 601, grid plate; 602, rotating shaft; 603, wind deflector; 70, air volume adjustment component; 701, electronically controlled air volume regulating valve; 702, air volume measuring unit; 80, visual control panel; 90, air humidifier. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In combination with the drawings and specific embodiments, the present utility model will be further described. It should be understood that these embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the present utility model, those skilled in the art can make various changes or modifications to the present utility model, and these equivalent forms also fall within the scope defined by this application.

[0027] Embodiment: A digital intelligent pressure control type modular air handling unit

[0028] As Figures 1-3As shown in the figure, a combined air conditioner unit with intelligent pressure control, its specific structure includes:

[0029] An air conditioner cabinet main body 10, a first fan 20, and a housing 30. On both sides of the air conditioner cabinet main body 10, there are respectively a fresh air inlet duct 101 and a fresh air outlet duct 102. Inside the air conditioner cabinet main body 10, close to one side of the fresh air inlet duct 101, there is a first fan 20. On one side of the top surface of the air conditioner cabinet main body 10, there is an integrally fixed housing 30. The housing 30 and the air conditioner cabinet main body 10 are separated into upper and lower chambers by a partition 304. On both sides of the housing 30, there are respectively a unit exhaust air inlet duct 301 and a unit exhaust air outlet duct 302. Inside the air conditioner cabinet main body 10, there is a fixed first air purification and filtration device 40. On one side of the top surface of the air conditioner cabinet main body 10, close to the fresh air inlet duct 101, there is a return air duct 50. Inside the air conditioner cabinet main body 10, close to one side of the fresh air inlet duct 101, there is an air turbulence component 60. Inside the fresh air inlet duct 101, the fresh air outlet duct 102, and the unit exhaust air inlet duct 301, there is an air volume adjustment component 70; among them, the air volume adjustment component 70 includes: an electronically controlled air volume regulating valve 701, and an electronically controlled air volume regulating valve 701 is provided in the fresh air inlet duct 101, the fresh air outlet duct 102, and the unit exhaust air inlet duct 301; an air volume measuring unit 702, and an air volume measuring unit 702 for measuring the air volume is provided in the fresh air inlet duct 101, the fresh air outlet duct 102, and the unit exhaust air inlet duct 301; a differential pressure sensor, and the differential pressure sensor is arranged indoors.

[0030] When this device is in use, it can effectively detect the fresh air intake volume of the fresh air inlet duct 101, the air supply volume of the unit's total air supply duct 102, and the exhaust air volume of the room exhaust duct 301 through the air volume measuring unit 702, and can effectively adjust the fresh air intake volume of the fresh air inlet duct 101, the air supply volume of the unit's total air supply duct 102, and the exhaust air volume of the room exhaust duct 301 through the electronically controlled air volume regulating valve 701, which is convenient for use.

[0031] Specifically refer to Figure 1 , the air turbulence component 60 includes: a grid plate 601, and two symmetrically arranged grid plates 601 are fixedly installed inside the air conditioner cabinet main body 10, close to one side of the fresh air inlet duct 101. The air outlet of the return air duct 50 is located between the two grid plates 601; a rotating shaft 602, and several uniformly distributed rotating shafts 602 are arranged between the two grid plates 601. Both ends of the rotating shaft 602 are rotatably connected to the corresponding side of the inner wall of the air conditioner cabinet main body 10 through bearings; a wind baffle 603, and several uniformly distributed wind baffles 603 are fixedly installed on the outer circumference of the rotating shaft 602. The wind baffle 603 is a strip-shaped structure.

[0032] When this device is in use, the grid plate 601 can divide and disturb the air entering the main body 10 of the air-conditioning cabinet. The air inhaled by the fresh air inlet duct 101 can exert a lateral thrust on the corresponding wind deflector 603, thereby blowing the wind deflector 603 to rotate, so that the air can be more evenly dispersed in the main body 10 of the air-conditioning cabinet. The low-temperature air blown into the main body 10 of the air-conditioning cabinet by the return air duct 50 can exert a vertical thrust on the wind deflector 603. Under the combined action of the cross wind and the vertical wind, the wind deflector 603 can rotate between the two grid plates 601, so as to continuously change the flow direction of the air through the wind deflector 603, realize the rapid fusion of the low-temperature air and the high-temperature air, and improve the initial cooling effect of this device.

[0033] A second fan 303 is fixedly installed in the housing 30, and a second air purification and filtration device 305 is provided on one side of the housing 30 close to the unit exhaust air duct 302. The second air purification and filtration device 305 can filter and adsorb viruses and pathogens in the indoor discharged air, prevent indoor viruses from being directly discharged outdoors, and prevent air pollution.

[0034] A visualization control panel 80 is fixedly installed on one side in front of the main body 10 of the air-conditioning cabinet. Through the visualization control panel 80, it is convenient for the user to control the electrical components in this device.

[0035] An air humidifier 90 is provided in the main body 10 of the air-conditioning cabinet, and the air humidifier 90 is located between the unit heat coil 104 and the fresh air outlet duct 102. Through the air humidifier 90, the humidity of the air can be increased, indoor dryness can be avoided, and the comfort of the indoor environment can be improved.

[0036] This solution also includes a controller, the position of which is set by the staff according to the actual situation during operation. The controller is used to control all the electrical appliances in this solution, including but not limited to sensors, motors, telescopic rods, water pumps, solenoid valves, heating wires, heat pumps, display screens, computer input devices, switch buttons, communication devices, lights, speakers and microphones; the controller is an Intel processor, AMD processor, PLC controller, ARM processor or single-chip microcomputer, and the motherboard, memory, storage medium and power supply are also used in supporting. The power supply is mains electricity or a lithium battery; when there is a display screen, a display card is also provided; for the operating principle of the controller, please refer to "Principles of Automatic Control", "Principles and Application Simulation Cases of Microcontrollers" and "Principles and Applications of Sensors" published by Tsinghua University Press, and other books in this field can be referred to for reading; other automation controls and electrical appliances not mentioned are all well-known knowledge to those skilled in the art and will not be elaborated here.

[0037] Working principle:

[0038] The core of room pressure difference control lies in the air volume control relationship between the actual fresh air supply volume and the exhaust air volume in the room. For example, in a positive pressure room, the fresh air supply volume should be greater than the exhaust air volume. Calculate the air leakage volume through various gaps such as doors and windows in the room according to the specific pressure difference value to be maintained in the room. According to the air volume balance principle, the fresh air supply volume is equal to the sum of the exhaust air volume and the air leakage volume.

[0039] A digital intelligent pressure control type modular air handling unit provided by the present utility model needs to install a corresponding differential pressure sensor in the corresponding room during installation and use. Connect the fresh air outlet duct 102 to the air inlet of the room, connect the return air duct 50 to the air return opening of the room, and connect the unit exhaust air inlet duct 301 to the air outlet of the room. When the air handling unit in this device is in use, it can clearly measure the values of the fresh air volume, supply air volume, exhaust air volume, and return air volume of the unit through the corresponding air volume measuring unit 702. According to the actual pressure difference requirements of the room and in accordance with the designed air volume value, the air volume values of each air outlet of the unit can be directly set on the visual control panel 80 outside the air handling unit cabinet main body 10. Through the electronically controlled air volume regulating valve 701 in the unit, the fresh air volume, supply air volume, exhaust air volume, and return air volume of the unit can stably supply air according to the set air volume value, so that the air volume sent into the room reaches the air volume difference required to control the pressure difference, thereby being able to well achieve the room pressure difference. If the air leakage volume of the room enclosure structure is greater than or less than the designed calculated value, the required room pressure difference can still be adjusted by fixing the supply air volume and adjusting the exhaust air volume on the visual control panel 80. During the operation of this device, according to the pressure difference change signal of the differential pressure sensor set in the room, the exhaust air volume of the unit is adjusted in real time to stabilize the room pressure difference. The blower 20 in the unit can adopt a variable frequency blower, and through the above-mentioned pressure difference control system, the control of the blower variable frequency logic can also be realized to achieve energy saving.

[0040] Through this device, for rooms with pressure difference control requirements, connect the room fresh air duct, supply air duct, exhaust air duct, and return air duct to the air handling unit, and the room pressure difference control, temperature and humidity control, air cleanliness control, etc. can be completed through the control logic set by the unit.

[0041] In the explanation of the present utility model, it should be noted that the term nouns representing directions are only for the convenience of description and understanding, and do not uniquely limit the installation positions of specific technical features, and other installable ways that can be realized are not excluded.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit them; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A digital intelligence pressure control type combined air conditioning unit, comprising an air conditioning cabinet main body (10), a first fan (20), and a housing (30), characterized in that: On both sides of the air-conditioning cabinet main body (10), there are respectively a fresh air inlet duct (101) and a fresh air outlet duct (102). Inside the air-conditioning cabinet main body (10), a first fan (20) is provided on one side close to the fresh air inlet duct (101). On one side of the top surface of the air-conditioning cabinet main body (10), a housing (30) is integrally and fixedly installed. The housing (30) and the air-conditioning cabinet main body (10) are separated into upper and lower chambers by a partition (304). On both sides of the housing (30), there are respectively a unit exhaust air inlet duct (301) and a unit exhaust air outlet duct (302). A first air purification and filtration device (40) is fixedly installed inside the air-conditioning cabinet main body (10). On one side of the top surface of the air-conditioning cabinet main body (10) close to the fresh air inlet duct (101), there is a return air duct (50). An air turbulence component (60) is provided on one side of the air-conditioning cabinet main body (10) inside close to the fresh air inlet duct (101). Air volume adjustment components (70) are provided in the fresh air inlet duct (101), the fresh air outlet duct (102), and the unit exhaust air inlet duct (301); Among them, the air volume adjustment component (70) includes: Electrically controlled air volume regulating valves (701), and electrically controlled air volume regulating valves (701) are provided in the fresh air inlet duct (101), the fresh air outlet duct (102), and the unit exhaust air inlet duct (301); Air volume measuring units (702), and air volume measuring units (702) for measuring air volume are provided in the fresh air inlet duct (101), the fresh air outlet duct (102), and the unit exhaust air inlet duct (301); Differential pressure sensors, and the differential pressure sensors are arranged indoors.

2. The intelligent pressure control type combined air conditioning unit according to claim 1, wherein: The air turbulence component (60) includes: Grid plates (601), two symmetrically arranged grid plates (601) are fixedly installed on one side of the air-conditioning cabinet main body (10) close to the fresh air inlet duct (101), and the air outlet of the return air duct (50) is located between the two grid plates (601); Rotating shafts (602), several uniformly distributed rotating shafts (602) are provided between the two grid plates (601), and both ends of the rotating shafts (602) are rotationally connected to the corresponding sides of the inner wall of the air-conditioning cabinet main body (10) through bearings; Wind baffle plates (603), several uniformly distributed wind baffle plates (603) are fixedly installed on the outer circumference of the rotating shafts (602), and the wind baffle plates (603) are strip-shaped structures.

3. A digital intelligent pressure control type combined air conditioning unit according to claim 1, characterized in that: A second fan (303) is fixedly installed inside the housing (30), and a second air purification and filtration device (305) is provided on one side of the housing (30) close to the unit exhaust air outlet duct (302).

4. A digital intelligent pressure control type combined air conditioning unit according to claim 1, characterized in that: A unit cold coil (103) and a unit hot coil (104) are fixedly installed inside the air-conditioning cabinet main body (10).

5. A digital intelligent pressure control combined air conditioning unit according to claim 1, characterized in that: A visualization control panel (80) is fixedly installed on one side of the front of the air-conditioning cabinet main body (10).

6. The combined air conditioner unit with digital intelligent pressure control according to claim 4, characterized in that: An air humidifier (90) is provided inside the air-conditioning cabinet main body (10), and the air humidifier (90) is located between the unit hot coil (104) and the fresh air outlet duct (102).

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