Three-section type air conditioning system

Abstract

The utility model relates to the technical field of air conditioning equipment, and provides a three-section type air conditioning system, which comprises an air handling unit, an air conditioning unit and a control unit, one end of the air supply pipeline is connected with the air handling unit, and the other end of the air supply pipeline is connected with an air supply outlet of a use area; one end of the return air pipeline is connected with the return air inlet of the use area, and the other end of the return air pipeline is connected with the air inlet; the first filtering part is arranged between the air inlet and the fan; the second filtering part is arranged between the fan and the air outlet; the third filtering part is arranged at an air inlet of at least one use area; the filtering grades of the first filtering part, the second filtering part and the third filtering part are sequentially increased. The three-section type filtering structure is arranged in the air handling unit and the use areas, the air handling unit and the use areas are connected through the air supply pipeline and the air return pipeline to form the loop, and different requirements for environment adjustment in different use areas are met.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning equipment, in particular to a three-stage air conditioning system. Background Art

[0002] In the existing air conditioning system, centralized temperature and humidity control and filtration equipment are usually adopted, which are difficult to meet the personalized needs of different regions or different people. In addition, it is difficult for the existing system to take into account the different filtration requirements of various parts in multiple regions and large ranges, resulting in the difficulty of ensuring the air quality in the region and the health risks of the people in the region. Summary of the Utility Model

[0003] The utility model provides a three-stage air conditioning system to solve the defect that the existing air conditioning system usually adopts centralized temperature and humidity control and filter settings and is difficult to meet the personalized needs of different regions or different people.

[0004] A three-stage air conditioning system according to the utility model includes: an air handling unit, including an air inlet and an air outlet, and a fan disposed between the air inlet and the air outlet; a supply air pipeline, one end of the supply air pipeline is connected to the air handling unit, and the other end of the supply air pipeline is connected to the air supply outlet of the use area; a return air pipeline, one end of the return air pipeline is connected to the air return outlet of the use area, and the other end of the return air pipeline is connected to the air inlet; a first filtration part, disposed between the air inlet and the fan; a second filtration part, disposed between the fan and the air outlet; a third filtration part, disposed at the air inlet of at least one of the use areas; wherein, the filtration grades of the first filtration part, the second filtration part and the third filtration part increase in sequence.

[0005] According to an embodiment of the utility model, the first filtration part is disposed at the air return outlet of the use area.

[0006] Specifically, this embodiment provides an implementation manner of the installation position of the first filtration part.

[0007] According to an embodiment of the utility model, the first filtration part is a primary filter, and the first filtration part includes a filter screen made of non-woven fabric.

[0008] Specifically, this embodiment provides an implementation manner of the first filtration part.

[0009] According to an embodiment of the utility model, the second filtration part is a medium filter, and the second filtration part includes a filter screen made of chemical fiber material.

[0010] Specifically, this embodiment provides an implementation manner of the second filtration part.

[0011] According to an embodiment of the present utility model, the third filtering part is a high-efficiency filter, and the third filtering part includes a filter screen made of ultra-fine glass fiber.

[0012] Specifically, this embodiment provides an implementation manner of the third filtering part.

[0013] According to an embodiment of the present utility model, it further includes: a first sensor, disposed in the air supply pipeline, for detecting the temperature and / or humidity of the airflow conveyed in the air supply pipeline.

[0014] Specifically, this embodiment provides an implementation manner of the first sensor.

[0015] According to an embodiment of the present utility model, it further includes: a second sensor, disposed in the return air pipeline, for detecting the temperature and / or humidity of the airflow conveyed in the return air pipeline.

[0016] Specifically, this embodiment provides an implementation manner of the second sensor.

[0017] According to an embodiment of the present utility model, it further includes: a fresh air pipeline, connected to the fresh air inlet of the air handling unit; a third sensor, disposed in the fresh air pipeline, for detecting the temperature and / or humidity of the airflow conveyed in the fresh air pipeline.

[0018] Specifically, this embodiment provides an implementation manner of the fresh air pipeline and the third sensor.

[0019] According to an embodiment of the present utility model, it further includes: a plurality of fourth sensors, respectively disposed in the first filtering part, the second filtering part, and the third filtering part, for detecting the upstream and downstream pressure differences at the positions where the first filtering part, the second filtering part, and the third filtering part are located.

[0020] Specifically, this embodiment provides an implementation manner of the fourth sensor.

[0021] According to an embodiment of the present utility model, the air supply pipeline includes at least two air supply branches, and the usage area includes air supply outlets correspondingly connected to the number of air supply branches; or, the air supply pipeline includes at least two air supply branches, and each air supply branch is connected to one usage area.

[0022] Specifically, this embodiment provides an implementation manner of the air supply branch.

[0023] One or more of the above technical solutions in the present utility model have at least one of the following technical effects: A three-stage air conditioning system provided by the present utility model realizes different requirements for environmental regulation in different use areas by arranging three-stage filtering components in the air handling unit and the use area, and connecting the air handling unit and multiple use areas through the air supply pipeline and the return air pipeline to form a loop, meeting the needs of users in different use areas for the corresponding environment, air quality, etc., and reducing the accessories of the system. Brief Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is one of the schematic diagrams of the layout relationship of the three-stage air conditioning system provided by the present utility model.

[0026] Figure 2 It is the second of the schematic diagrams of the layout relationship of the three-stage air conditioning system provided by the present utility model.

[0027] Reference Numerals:

[0028] 10, air handling unit; 11, air inlet; 12, air outlet; 13, fan; 14, fresh air inlet.

[0029] 20, air supply pipeline; 21, first sensor; 22, air supply branch.

[0030] 30, return air pipeline; 31, second sensor.

[0031] 40, use area; 41, air supply opening; 42, return air opening.

[0032] 50, first filter section;

[0033] 60, second filter section;

[0034] 70, third filter section;

[0035] 80, fresh air pipeline; 81, third sensor.

[0036] 90, fourth sensor. Detailed Embodiments

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0038] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0039] The present utility model will be specifically described below in conjunction with the specific embodiments.

[0040] In some specific implementation schemes of the present utility model, as Figure 1 and Figure 2 shown, the present solution provides a three-stage air conditioning system, including: an air handling unit 10, including an air inlet 11 and an air outlet 12, and a fan 13 disposed between the air inlet 11 and the air outlet 12; a supply air duct 20, one end of the supply air duct 20 is connected to the air handling unit 10, and the other end of the supply air duct 20 is connected to the air supply port 41 of the usage area 40; a return air duct 30, one end of the return air duct 30 is connected to the air return port 42 of the usage area 40, and the other end of the return air duct 30 is connected to the air inlet 11; a first filter section 50, disposed between the air inlet 11 and the fan 13; a second filter section 60, disposed between the fan 13 and the air outlet 12; a third filter section 70, disposed at the air inlet 11 of at least one usage area 40; wherein, the filtration grades of the first filter section 50, the second filter section 60, and the third filter section 70 increase in sequence.

[0041] It should be noted that the present utility model forms a three-stage filtration by setting the first filter section 50, the second filter section 60, and the third filter section 70 with sequentially varying filtration grades, and arranges the three-stage filtration at different positions of the air conditioning system, realizing customized settings according to the filtration requirements of different regions, and continuously ensuring air quality and reducing health risks through effective filter management.

[0042] In a possible embodiment, if the pressure difference across the third filtering part 70 exceeds the set alarm value, it should also be replaced or cleaned in a timely manner.

[0043] In a possible embodiment, the first filtering part 50, the second filtering part 60, and the third filtering part 70 are equipped with a differential pressure gauge and a differential pressure switch. When the filter screen is dirty and blocked, the differential pressure gauge displays the differential pressure before and after the filter screen in real time, and the differential pressure switch sends a fault signal to the air-conditioning control system, facilitating the user to actually understand the usage situation of the air filtration.

[0044] In a possible embodiment, the central air-conditioning unit is also provided with a temperature and humidity acquisition component, which mainly acquires the temperature and humidity of the fresh air, the return air, and the supply air in the central air-conditioning system.

[0045] In some possible implementation manners of the present utility model, the first filtering part 50 is arranged at the air return opening 42 of the usage area 40.

[0046] Specifically, this embodiment provides an implementation manner of the installation position of the first filtering part 50. By arranging the first filtering part 50 at the air return opening 42 of the usage area 40, the airflow flowing back in the usage area 40 is filtered, so that the flowing-back airflow can be preliminarily filtered at the first filtering part 50 arranged at the air return opening 42 of the usage area 40 before entering the air handling unit 10, improving the cleanliness of the airflow, ensuring the air quality, and reducing the health risks.

[0047] In some possible implementation manners of the present utility model, the first filtering part 50 is a primary filter, and the first filtering part 50 includes a filter screen made of non-woven fabric.

[0048] Specifically, this embodiment provides an implementation manner of the first filtering part 50. The first filtering part 50 is a primary filter installed in the air handling unit 10, and the filter material of the primary filter is non-woven fabric.

[0049] In a possible embodiment, the first filtering part 50 is a plate-type primary filter, the filtering grade of the first filtering part 50 is G4, it can filter dust with a particle size ≥ 0.5 μm, the primary filtering efficiency ≥ 92%, the differential pressure gauge of the primary filter measures the initial resistance of 40 Pa, and the final resistance shows 250 Pa.

[0050] It should be noted that the first filtering part 50 performs primary filtering on the outdoor fresh air and the indoor return air. If the pressure difference across the first filtering part 50 exceeds the set alarm value, it should also be replaced or cleaned in a timely manner.

[0051] In a possible embodiment, the specification of the first filtering part 50 is 595x595x46 (mm), and the rated air volume is 3400 m³ / H.

[0052] In a possible embodiment, the specification of the first filter unit 50 is 290x595x46 (mm), and the rated air volume is 1700 m³ / H.

[0053] In a possible embodiment, the first filter unit 50 is detachable and is installed on a sealed movable frame by a fixing spring clip that is easy to disassemble and assemble. The frame is made of aluminum alloy or galvanized sheet.

[0054] In some possible implementation manners of the present utility model, the second filter unit 60 is a medium-efficiency filter, and the second filter unit 60 includes a filter mesh made of chemical fiber material.

[0055] Specifically, this embodiment provides an implementation manner of the second filter unit 60. The second filter unit 60 is a medium-efficiency filter installed in the air handling unit 10, and the medium-efficiency filter uses chemical fiber filter media.

[0056] In a possible embodiment, the cleanliness of the second filter unit 60 is F8, the filtration efficiency is 90% (colorimetric method), the initial resistance measured by the differential pressure gauge of the second filter unit 60 is 250 Pa, and the final resistance is 450 Pa.

[0057] In a possible embodiment, when the second filter unit 60 needs to be cleaned or replaced, the medium-efficiency filter uses a bag filter with low air resistance and water resistance. If the differential pressure at both ends of the second filter unit 60 exceeds the set alarm value, it should also be replaced or cleaned in time.

[0058] In a possible embodiment, the second filter unit 60 is detachable and is installed on a sealed movable frame by a fixing spring clip that is easy to disassemble and assemble. The frame is made of galvanized sheet.

[0059] In a possible embodiment, the common specification of the second filter unit 60 is 592x592x381 (mm), 8 bags, and the rated air volume is 3400 m³ / H.

[0060] In a possible embodiment, the common specification of the second filter unit 60 is 287x592x381 (mm), 4 bags, and the rated air volume is 1700 m³ / H.

[0061] In some possible implementation manners of the present utility model, the third filter unit 70 is a high-efficiency filter, and the third filter unit 70 includes a filter mesh made of ultra-fine glass fiber.

[0062] Specifically, this embodiment provides an implementation manner of the third filter unit 70. The third filter unit 70 is disposed at the air inlet 11 of at least one use area 40.

[0063] In a possible embodiment, the third filter unit 70 uses an ultra-fine glass fiber paper high-efficiency filter to achieve the purpose of clean air supply.

[0064] In a possible embodiment, the filtration efficiency of the third filtration section 70 is ≥99.99% (for dust particles with a particle size ≥0.5 μm), the initial resistance is ≤24 mmH2O (235 Pa), and it can be replaced annually or continue to be used after being tested and confirmed to meet the requirements.

[0065] In a possible embodiment, if the differential pressure at both ends of the third filtration section 70 exceeds the set alarm value, it should also be replaced or cleaned in a timely manner.

[0066] In some possible implementation manners of the present utility model, it further includes: a first sensor 21, disposed in the air supply pipeline 20, for detecting the temperature and / or humidity of the air flow conveyed in the air supply pipeline 20.

[0067] Specifically, this embodiment provides an implementation manner of the first sensor 21. The first sensor 21 is disposed on the air supply pipeline 20, realizing the acquisition of the temperature and / or humidity of the air flow conveyed by the air treatment assembly to the use area 40, achieving more refined zoning temperature and humidity control, and enhancing the user's comfort experience.

[0068] In some possible implementation manners of the present utility model, it further includes: a second sensor 31, disposed in the return air pipeline 30, for detecting the temperature and / or humidity of the air flow conveyed in the return air pipeline 30.

[0069] Specifically, this embodiment provides an implementation manner of the second sensor 31. The second sensor 31 is disposed on the return air pipeline 30, realizing the acquisition of the temperature and / or humidity of the air flow conveyed by the air treatment assembly to the use area 40. The evenly distributed multi-point acquisition system improves the accuracy and reliability of environmental monitoring, achieves more refined zoning temperature and humidity control, and enhances the user's comfort experience.

[0070] In some possible implementation manners of the present utility model, it further includes: a fresh air pipeline 80, connected to the fresh air inlet 14 of the air treatment unit 10; a third sensor 81, disposed in the fresh air pipeline 80, for detecting the temperature and / or humidity of the air flow conveyed in the fresh air pipeline 80.

[0071] Specifically, this embodiment provides an implementation manner of the fresh air pipeline 80 and the third sensor 81. By providing the fresh air pipeline, fresh air is conveyed to the use area 40, and by disposing the third sensor 81 on the fresh air pipeline, the temperature and / or humidity of the air flow conveyed in the fresh air pipeline is adjusted.

[0072] In some possible implementation manners of the present utility model, it further includes: a plurality of fourth sensors 90, respectively disposed in the first filtration section 50, the second filtration section 60, and the third filtration section 70, for detecting the differential pressure between the upstream and downstream positions where the first filtration section 50, the second filtration section 60, and the third filtration section 70 are located.

[0073] Specifically, this embodiment provides an implementation manner of the fourth sensor 90. By setting the fourth sensor 90, the acquisition of the upstream and downstream pressure information of the first filtering part 50, the second filtering part 60, the third filtering part 70, etc. is realized, and thus more refined zoning temperature and humidity control is achieved, improving the user's comfort experience.

[0074] It should be noted that the first sensor 21, the second sensor 31, the third sensor 81, and the fourth sensor 90 form a distributed sensing component, realizing multi-point acquisition of the area, and improving the accuracy and reliability of environmental monitoring.

[0075] In some possible implementation manners of the present utility model, the air supply pipeline 20 includes at least two air supply branches 22, and the usage area 40 includes air supply outlets 41 connected corresponding to the number of the air supply branches 22; alternatively, the air supply pipeline 20 includes at least two air supply branches 22, and each air supply branch 22 is connected to one usage area 40.

[0076] Specifically, this embodiment provides an implementation manner of the air supply branch 22. By setting the air supply pipeline 20 as at least two air supply branches 22 and setting them in one-to-one correspondence with the air supply outlets 41 of the usage area 40, the air supply within the usage area 40 is realized.

[0077] Furthermore, each air supply branch 22 can also be set in one-to-one correspondence with each usage area 40 to improve the response speed and energy usage efficiency of the system.

[0078] In the description of the embodiments of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific situations.

[0079] In the embodiments of the present utility model, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0080] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or mode are included in at least one embodiment or mode of the embodiments of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or modes. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or modes described in this specification and the features of different embodiments or modes.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the present utility model and not to limit it. Although the present utility model has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present utility model do not depart from the spirit and scope of the technical solutions of the present utility model and should all be covered by the scope of the claims of the present utility model.

Claims

1. A three-stage air conditioning system, characterized in that: include: An air handling unit (10) comprising an air inlet (11) and an air outlet (12), and a fan (13) arranged between the air inlet (11) and the air outlet (12); An air supply pipeline (20), one end of the air supply pipeline (20) being connected to the air handling unit (10), and the other end of the air supply pipeline (20) being connected to an air supply port (41) of a use area (40); a return air duct (30), one end of the return air duct (30) being connected to the return air port (42) of the use area (40), and the other end of the return air duct (30) being connected to the air inlet (11); A first filter unit (50) is arranged between the air inlet (11) and the fan (13); A second filter unit (60) is arranged between the fan (13) and the air outlet (12); a third filter portion (70) disposed at an air inlet (11) of at least one of the use areas (40); The filtering levels of the first filter part (50), the second filter part (60) and the third filter part (70) increase in sequence.

2. The three-stage air conditioning system according to claim 1, characterized in that: The first filter unit (50) is arranged at the return air outlet (42) of the use area (40).

3. The three-stage air conditioning system according to claim 1, characterized in that: The first filter part (50) is a primary filter, and the first filter part (50) comprises a filter screen made of non-woven fabric.

4. The three-stage air conditioning system according to claim 1, characterized in that: The second filter part (60) is a medium-efficiency filter, and the second filter part (60) comprises a filter screen made of a chemical fiber material.

5. The three-stage air conditioning system according to claim 1, characterized in that: The third filter portion (70) is a high-efficiency filter, and the third filter portion (70) comprises a filter screen made of ultra-fine glass fibers.

6. The three-stage air conditioning system according to any one of claims 1 to 5, characterized in that: Also includes: The first sensor (21) is arranged in the air supply pipeline (20) and is used to detect the temperature and / or humidity of the air flow in the air supply pipeline (20).

7. The three-stage air conditioning system according to any one of claims 1 to 5, characterized in that: Also includes: The second sensor (31) is arranged in the return air duct (30) and is used to detect the temperature and / or humidity of the air flow in the return air duct (30).

8. The three-stage air conditioning system according to any one of claims 1 to 5, characterized in that: Also includes: A fresh air pipeline (80) connected to the fresh air outlet (14) of the air handling unit (10); The third sensor (81) is arranged in the fresh air pipeline (80) and is used to detect the temperature and / or humidity of the air flow transported in the fresh air pipeline (80).

9. The three-stage air conditioning system according to any one of claims 1 to 5, characterized in that: Also includes: A plurality of fourth sensors (90) are respectively arranged at the first filter portion (50), the second filter portion (60) and the third filter portion (70), and are used to detect the upstream and downstream pressure difference at the locations of the first filter portion (50), the second filter portion (60) and the third filter portion (70).

10. The three-stage air conditioning system according to any one of claims 1 to 5, characterized in that: The air supply pipeline (20) comprises at least two air supply branches (22), and the use area (40) comprises air supply outlets (41) connected to a number corresponding to the number of the air supply branches (22); Alternatively, the air supply pipeline (20) comprises at least two air supply branches (22), and each of the air supply branches (22) is connected to one of the usage areas (40).

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