Energy-saving transformation support device and energy-saving transformation method for functional section of air handling unit

Abstract

The invention relates to the technical field of heating, ventilation and air conditioning systems, in particular to an air conditioning box functional section energy-saving transformation support device which comprises a box body, an air inlet, an air outlet, a first air outlet and a second air outlet. The device comprises a first support and a second support, a moving mechanism is connected between the first support and the second support and used for driving the second support to move, a first functional section module is installed in the second support, and the first functional section module is one or more of a filtering section, a surface cooling section, a humidifying section, a heating section and a heat recovery section; the invention further discloses an air conditioning box function section energy-saving transformation method. The method comprises the following steps that S1, the first function section module in the box body is dismantled; s2, mounting a first bracket and fixing the first bracket in the box body; the first function section module in the second support can be used on line, all changes are achieved through approaching and leaving of the first support and the second support, in this way, static pressure consumption of the air conditioning box system is reduced, the work applying requirement of a motor fan is reduced, and energy saving is achieved.

Description

Technical Field

[0001] This invention relates to the field of HVAC system technology, specifically to an energy-saving retrofit support device and energy-saving retrofit method for the functional section of an air conditioning unit. Background Technology

[0002] Heating, ventilation and air conditioning (HVAC) is a system that provides heating, ventilation and air conditioning. It is an important component of modern production and life. Air conditioning units are an important part of HVAC systems and one of the main measures to achieve air conditioning technology. Air conditioning units can be classified according to their functions as: fresh air handling units (MAU), recirculating air handling units (RCU), and combined air handling units (AHU), etc. Different air conditioning units achieve their purpose through at least one combination of functional sections (fresh air and return (mixed) air section, supply air section, filter section, surface cooling section, humidification section, heating section, fan section, flow equalization section, heat recovery section, and noise reduction section).

[0003] The existing air conditioning units are manufactured according to the project design requirements. Different functional sections are configured with redundancy based on the control target threshold of the controlled environment when they are manufactured. Once the air conditioning unit is put into use, the functional sections remain basically unchanged throughout its entire life cycle, except for filter replacement and equipment maintenance.

[0004] However, the external environment's air temperature, humidity, cleanliness, and airflow speed are constantly changing, especially the temperature changes caused by the temperature difference between day and night, the humidity changes caused by local rainfall, the temperature and humidity changes caused by seasonal changes, and the changes in cleanliness caused by changes in the degree of air pollution.

[0005] The air conditioning unit's functional sections, designed for factory redundancy due to the constantly changing external environment, exhibit three "unnecessary but still present" characteristics during actual operation, except in severe weather:

[0006] ① The surface cooling section or heating section remains intact even without temperature regulation;

[0007] ②The cooling coil or humidification section remains in place even without humidity control;

[0008] ③ The filter section is still present even though cleaner air is not required.

[0009] The existence of the above problems causes the system resistance to be relatively low and energy consumption to be low, but instead it is operated according to severe weather conditions, resulting in unnecessary waste. That is, the problem of energy waste caused by changes in the air load being processed while the functional sections of the air conditioning unit remain unchanged. Summary of the Invention

[0010] The purpose of this invention is to solve the problems existing in the prior art, and to propose an energy-saving retrofit support device and energy-saving retrofit method for the functional section of an air conditioning unit.

[0011] To achieve the above objectives, the present invention adopts the following technical solution:

[0012] An energy-saving retrofit support device for the functional section of an air conditioning unit, comprising:

[0013] The housing has an air inlet on its inner wall;

[0014] A first support and a second support are connected by a moving mechanism for moving the second support. A first functional segment module is installed inside the second support. The first functional segment module is one or more of the following: a filtration segment, a surface cooling segment, a humidification segment, a heating segment, and a heat recovery segment.

[0015] The first bracket and the second bracket have a sealing assembly at their contact surfaces for sealing when they come into contact. The sealing assembly includes a first sealing element and a second sealing element, wherein the first sealing element is fixedly connected to the side wall of the first bracket near the second bracket, and the second sealing element is fixedly connected to the side wall of the second bracket near the first bracket.

[0016] Preferably, a second functional segment module is fixedly connected to the inner wall of the box, and the side wall of the first bracket is fixedly connected to the inner wall of the box and the side wall of the second functional segment module. The second functional segment module is one or more of the following: a filtration segment, a surface cooling segment, a humidification segment, a heating segment, and a heat recovery segment.

[0017] Preferably, the four sides of the first bracket are fixedly connected to the four inner walls of the box.

[0018] Preferably, the moving mechanism includes multiple electric push rods fixedly connected to the side wall of the first bracket, and the movable ends of the multiple electric push rods are fixedly connected to the side wall of the second bracket. The first seal and the second seal are double-cross type, and the seal is achieved by the first seal and the second seal being inserted into each other.

[0019] Preferably, the moving mechanism includes two first rotating shafts rotatably connected to the middle of the side wall of the first bracket. The ends of the two first rotating shafts that are close to each other are fixedly connected to the side wall of the second bracket. One end of one of the first rotating shafts passes through the side wall of the box and is fixedly connected to a trigger. The first sealing element and the second sealing element are parallel and the sealing is achieved by the parallel contact and compression of the first sealing element and the second sealing element.

[0020] Preferably, the moving mechanism includes a second rotating shaft rotatably connected to the side wall of the first bracket, the side wall of the second rotating shaft being fixedly connected to the side wall of the second bracket, one end of the second rotating shaft penetrating the side wall of the housing and being fixedly connected to a trigger element, the first sealing element and the second sealing element being a single insertion type, and sealing is achieved by inserting the first sealing element into the second sealing element.

[0021] An energy-saving retrofit method for a functional section of an air conditioning unit includes the following steps:

[0022] S1: Remove the first functional module inside the box;

[0023] S2: Install the first bracket and fix it inside the box;

[0024] S3: Install the first functional segment module onto the second bracket and install the moving mechanism;

[0025] S4: Connect the corresponding wire conduit fittings;

[0026] S5: Conduct energy conservation assessments.

[0027] Preferably, in step S3, a brand new and identical first functional segment module can be installed on the second bracket and a moving mechanism can be installed, wherein the cross-sectional size of the replaced first functional segment module is ≥ 80% of the cross-sectional size of the removed first functional segment module.

[0028] Preferably, in step S4, when the conduit is inserted from the outside of the box into the box, sufficient displacement space needs to be reserved inside the box and a sealing kit is used to seal the box.

[0029] Preferably, the energy-saving assessment shall be conducted under the same wind speed, including the following steps:

[0030] S6. Measurement of system resistance before modification;

[0031] S7. Energy consumption N corresponding to the operating time t before the modification;

[0032] S8. Resistance measurement of the modified air conditioning unit;

[0033] S9. Energy consumption N* and energy saving rate s corresponding to the modified operating time t.

[0034] Compared with existing technologies, the advantages of this invention are:

[0035] 1. The enclosure uses a first bracket and a second bracket to use the first functional segment module, which can be used online and offline. When the corresponding functional segment is not needed, the first bracket and the second bracket are far apart, so that the first functional segment module in the second bracket can be used offline. When the corresponding functional segment is needed, the first bracket and the second bracket are close together and sealed, so that the first functional segment module in the second bracket can be used online. All changes are achieved by moving the first bracket and the second bracket closer and further apart. This reduces the static pressure consumption of the air conditioning box system, thereby reducing the power demand of the motor and fan and achieving energy saving.

[0036] 2: The manual self-locking throttle drive allows for seasonal and long-term functional segment changes, while the self-locking motor or electric actuator allows for real-time functional segment changes, which is beneficial for customized matching based on project requirements. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0038] Figure 2 This is a schematic diagram of the sealing assembly in Embodiment 1 of the present invention;

[0039] Figure 3 This is a three-dimensional structural diagram of the first and second supports in Embodiment 1 of the present invention;

[0040] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0041] Figure 5 for Figure 4 Enlarged structural diagram at point A;

[0042] Figure 6 This is a three-dimensional structural diagram of the first and second supports in Embodiment 2 of the present invention;

[0043] Figure 7 This is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0044] Figure 8 for Figure 7 Enlarged structural diagram at point B;

[0045] Figure 9 This is a three-dimensional structural diagram of the first and second supports in Embodiment 3 of the present invention;

[0046] Figure 10 for Figure 9 A schematic diagram of the vertical sectional structure;

[0047] Figure 11 This is a schematic diagram illustrating the operation of the self-locking motor or electric actuator in this invention.

[0048] In the diagram: 1. Housing; 2. Air inlet; 3. Second functional section module; 4. First bracket; 5. Second bracket; 6. First functional section module; 7. Sealing assembly; 701. First seal; 702. Second seal; 8. Electric push rod; 9. Trigger. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] Reference Figure 1-11 An energy-saving retrofit support device for the functional section of an air conditioning unit includes a unit 1, with an air inlet 2 opened on the inner wall of the unit 1.

[0051] A first support 4 and a second support 5 are connected by a moving mechanism for moving the second support 5. A first functional segment module 6 is installed inside the second support 5. The first functional segment module 6 is one or more of the following: a filtration segment, a surface cooling segment, a humidification segment, a heating segment, and a heat recovery segment.

[0052] A sealing assembly 7 is provided on the contact surface of the first bracket 4 and the second bracket 5 for sealing when the first bracket 4 and the second bracket 5 are in contact. The sealing assembly 7 includes a first sealing element 701 and a second sealing element 702. The first sealing element 701 is fixedly connected to the side wall of the first bracket 4 near the second bracket 5, and the second sealing element 702 is fixedly connected to the side wall of the second bracket 5 near the first bracket 4.

[0053] The inner wall of the housing 1 is fixedly connected to the second functional section module 3, and the side wall of the first bracket 4 is fixedly connected to the inner wall of the housing 1 and the side wall of the second functional section module 3 respectively. The second functional section module 3 is one or more of the following: filter section, surface cooling section, humidification section, heating section and heat recovery section.

[0054] The four sides of the first bracket 4 are fixedly connected to the four inner walls of the box 1.

[0055] In summary, the first bracket 4 can be used to cover the entire cross section of the box 1, or the first bracket 4 can be used to partially cover the cross section of the box 1.

[0056] The moving mechanism includes multiple electric push rods 8 fixedly connected to the side wall of the first bracket 4. The movable ends of the multiple electric push rods 8 are jointly fixedly connected to the side wall of the second bracket 5. The first seal 701 and the second seal 702 are double-cross type, and the seal is achieved by the mutual insertion of the first seal 701 and the second seal 702, such as type E and type E, etc. Figure 3 As shown.

[0057] The moving mechanism includes two first rotating shafts rotatably connected to the middle of the side wall of the first bracket 4. The ends of the two first rotating shafts, close to each other, are fixedly connected to the side wall of the second bracket 5. One end of one of the first rotating shafts passes through the side wall of the housing 1 and is fixedly connected to a trigger element 9. The first sealing element 701 and the second sealing element 702 are parallel, and sealing is achieved through parallel contact and compression of the first sealing element 701 and the second sealing element 702, such as type I and type II. Figure 6 As shown.

[0058] The moving mechanism includes a second rotating shaft rotatably connected to the side wall of the first bracket 4. The side wall of the second rotating shaft is fixedly connected to the side wall of the second bracket 5. One end of the second rotating shaft passes through the side wall of the housing 1 and is fixedly connected to a trigger element 9. The first seal 701 and the second seal 702 are single-insertion type, and sealing is achieved by inserting the first seal 701 into the second seal 702, such as inverted T-shaped and C-shaped seals. Figure 9 and 10 As shown.

[0059] It should be noted that, referring to Figure 11 The trigger element 9 uses either a self-locking motor or a manual self-locking throttle.

[0060] When using a self-locking motor or electric actuator 8, a sensor is installed inside the housing 1. The sensor can collect air parameters including temperature, humidity, airflow speed, and cleanliness (particulate matter concentration). A storage and computing medium is installed outside the housing 1. It can perform calculations based on the sensor data and actual requirements. When the target value is lower than the threshold, the first bracket 4 and the second bracket 5 move away from each other. When the target value is higher than the threshold, the first bracket 4 and the second bracket 5 move closer together and are sealed by the sealing component 7. The opening signal of the self-locking motor or electric actuator 8 is negatively fed back to the storage and computing medium, thereby realizing automatic control.

[0061] Furthermore, a manual self-locking throttle drive can be adopted to achieve seasonal and long-term functional segment changes, while a self-locking motor or electric push rod 8 can achieve real-time functional segment changes, which is conducive to customized matching based on project needs.

[0062] The present invention will be described below through specific embodiments.

[0063] Example 1

[0064] Reference Figures 1-3 Remove part of the first functional section module 6 inside the housing 1, and fix the first bracket 4 in the space where it was removed. At this time, the first bracket 4 partially covers the cross section of the housing 1, and both the first functional section module 6 and the second functional section module 3 are filter sections.

[0065] Multiple electric push rods 8 are fixedly connected to the side wall of the first bracket 4. Simultaneously, the first seal 701 and the second seal 702 are double-crossed, achieving sealing through the mutual insertion of the first seal 701 and the second seal 702, such as type E and type E, etc. Figure 3 As shown, when the electric push rod 8 extends or retracts, the first bracket 4 and the second bracket 5 can move away from or move closer to each other, opening or closing the space between the first bracket 4 and the second bracket 5.

[0066] Example 2

[0067] Reference Figures 4-6 Remove all first functional section modules 6 inside the box 1, and fix the first bracket 4 in the space where it was removed. At this time, the first bracket 4 covers the entire cross section of the box 1, and the first functional section module 6 is the humidification section.

[0068] The first bracket 4 has two first rotating shafts rotatably connected to its side wall. One end of one of the first rotating shafts passes through the side wall of the housing 1 and is fixedly connected to a trigger 9. The first sealing element 701 and the second sealing element 702 are parallel and achieve sealing through parallel contact and compression of the first sealing element 701 and the second sealing element 702, such as type I and type II. Figure 6 As shown.

[0069] At this time, the counterclockwise or clockwise rotation of the trigger 9 can drive the second bracket 5 to rotate counterclockwise or clockwise, opening or closing the connection between the first bracket 4 and the second bracket 5.

[0070] Example 3

[0071] Reference Figures 7-10 Remove all first functional section modules 6 inside the housing 1, and fix the first bracket 4 in the space where it was removed. At this time, the first bracket 4 covers the entire cross section of the housing 1, and the first functional section module 6 is the surface cooling section.

[0072] The first bracket 4 is rotatably connected to the second rotating shaft on its side wall. One end of the second rotating shaft passes through the side wall of the housing 1 and is fixedly connected to a trigger element 9. The first sealing element 701 and the second sealing element 702 are single-insertion type, and sealing is achieved by inserting the first sealing element 701 into the second sealing element 702, such as inverted T-shaped and C-shaped sealing elements. Figure 9 and 10 As shown.

[0073] At this time, the counterclockwise or clockwise rotation of the trigger 9 can drive the second bracket 5 to rotate counterclockwise or clockwise, opening or closing the connection between the first bracket 4 and the second bracket 5.

[0074] In this invention, the housing 1 uses a first bracket 4 and a second bracket 5 to utilize a first functional segment module 6, which can be used both online and offline. When the corresponding functional segment is not needed, the first bracket 4 and the second bracket 5 are moved apart, allowing the first functional segment module 6 within the second bracket 5 to be used offline. When the corresponding functional segment is needed, the first bracket 4 and the second bracket 5 are moved closer together and sealed, allowing the first functional segment module 6 within the second bracket 5 to be used online. All changes are achieved by moving the first bracket 4 and the second bracket 5 closer together and further apart, thus reducing the static pressure consumption of the air conditioning unit system, thereby reducing the power requirements of the motor fan and achieving energy saving.

[0075] An energy-saving retrofit method for a functional section of an air conditioning unit includes the following steps:

[0076] S1: Remove the first functional module 6 inside box 1;

[0077] S2: Install the first bracket 4 and fix it inside the housing 1;

[0078] S3: Install the first functional segment module 6 onto the second bracket 5, and install the moving mechanism;

[0079] S4: Connect the corresponding wire conduit fittings;

[0080] S5: Conduct energy conservation assessments.

[0081] In step S3, a brand new and identical first functional segment module 6 can be installed on the second bracket 5 and a moving mechanism can be installed, wherein the cross-sectional size of the replaced first functional segment module 6 is ≥ 80% of the cross-sectional size of the removed first functional segment module 6.

[0082] In step S4, the conduit is involved in inserting the wire into the box 1 from the outside. Sufficient displacement space needs to be reserved inside the box 1, and a sealing kit is used to seal the box 1.

[0083] Energy efficiency assessments must be conducted at the same wind speed, including the following steps:

[0084] S6. Measurement of system resistance before modification;

[0085] S7. Energy consumption N corresponding to the operating time t before the modification;

[0086] S8. Resistance measurement of the modified air conditioning unit;

[0087] S9. Energy consumption N* and energy saving rate s corresponding to the modified operating time t.

[0088] The method will be illustrated below with specific examples.

[0089] Example 4

[0090] Based on the energy efficiency comparison of Example 1, the original air conditioning unit had a rated air volume of 40,000 m³ / h. 3 The system operates at a constant air volume of / h. The filtration section is equipped with a plate-type coarse filter (G4) and a bag filter (F7). The coarse bag filter section is modified with a support structure, and an energy efficiency assessment is conducted. Specific steps are detailed in Example 1, and the energy consumption assessment data is as follows:

[0091] Rated air volume 40000m³ 3 At a rate of / h, the average resistance of the coarse filter G4 is 173Pa, and the average resistance of the bag filter F7 is 235Pa. Before the retrofit, the average annual operating time was 7810h. According to the energy efficiency calculation formula... Calculate, where q is the air volume (unit: m³). 3 / s), Δp is the average resistance (in Pa), t is the running time (in h), and η is the average conversion efficiency, which is generally taken as 0.5.

[0092] The energy consumption generated by the coarse G4 filter and the medium F7 bag filter in this section is N = 40000 / 3600*(173+235)*7810 / 0.5 / 1000 = 70810.67 kWh.

[0093] After the bracket modification, based on air quality and climate data, the service life of the coarse filter and bag filter is as follows:

[0094] Filter Coarse filter G4 F7 bag filter Annual "online" duration 2800h 1653h

[0095] Assuming the average resistance of the filter remains unchanged during the modification, its resistance is the average resistance when the filter is online and 0 Pa when the filter is offline.

[0096] N*=40000 / 3600*173*2800 / 0.5 / 1000+40000 / 3600*235*1653 / 0.5 / 1000=10764.44+8632.33=19396.77kwh.

[0097] Savings rate s = (70810.67 - 19396.77) / 70810.67 = 72.6%.

[0098] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An energy-saving retrofit support device for the functional section of an air conditioning unit, characterized in that, include: The box (1) has an air inlet (2) on its inner wall; A first support (4) and a second support (5) are connected by a moving mechanism to drive the second support (5) to move. A first functional segment module (6) is installed inside the second support (5). The first functional segment module (6) is one or more of the following: a filtration segment, a surface cooling segment, a humidification segment, a heating segment, and a heat recovery segment. The first bracket (4) and the second bracket (5) are provided with a sealing assembly (7) for sealing when the first bracket (4) and the second bracket (5) are in contact. The sealing assembly (7) includes a first sealing element (701) and a second sealing element (702). The first sealing element (701) is fixedly connected to the side wall of the first bracket (4) near the second bracket (5), and the second sealing element (702) is fixedly connected to the side wall of the second bracket (5) near the first bracket (4).

2. The energy-saving retrofit support device for the functional section of an air conditioning unit according to claim 1, characterized in that, The inner wall of the housing (1) is fixedly connected to a second functional section module (3), and the side wall of the first bracket (4) is fixedly connected to the inner wall of the housing (1) and the side wall of the second functional section module (3). The second functional section module (3) is one or more of the following: a filtration section, a surface cooling section, a humidification section, a heating section, and a heat recovery section.

3. The energy-saving retrofit support device for the functional section of an air conditioning unit according to claim 1, characterized in that, The four sides of the first bracket (4) are fixedly connected to the four sides of the inner wall of the box (1).

4. The energy-saving retrofit support device for the functional section of an air conditioning unit according to claim 2 or 3, characterized in that, The moving mechanism includes multiple electric push rods (8) fixedly connected to the side wall of the first bracket (4). The movable ends of the multiple electric push rods (8) are fixedly connected to the side wall of the second bracket (5). The first seal (701) and the second seal (702) are double-cross type, and the seal is achieved by the first seal (701) and the second seal (702) being inserted into each other.

5. The energy-saving retrofit support device for the functional section of an air conditioning unit according to claim 2 or 3, characterized in that, The moving mechanism includes two first rotating shafts rotatably connected to the middle of the side wall of the first bracket (4). The two first rotating shafts are fixedly connected to the side wall of the second bracket (5) at one end, and one end of the first rotating shaft passes through the side wall of the box (1) and is fixedly connected to a trigger (9). The first sealing element (701) and the second sealing element (702) are parallel and are sealed by the parallel contact and compression of the first sealing element (701) and the second sealing element (702).

6. The energy-saving retrofit support device for the functional section of an air conditioning unit according to claim 2 or 3, characterized in that, The moving mechanism includes a second rotating shaft rotatably connected to the side wall of the first bracket (4), the side wall of the second rotating shaft being fixedly connected to the side wall of the second bracket (5), one end of the second rotating shaft penetrating the side wall of the housing (1) and being fixedly connected to a trigger (9), the first sealing member (701) and the second sealing member (702) being a single insertion type, and sealing is achieved by inserting the first sealing member (701) into the second sealing member (702).

7. An energy-saving retrofit method for an air conditioning unit functional section energy-saving retrofit bracket device according to any one of claims 1-6, characterized in that, Includes the following steps: S1: Remove the first functional segment module (6) inside the box (1); S2: Install the first bracket (4) and fix it inside the box (1); S3: Install the first functional segment module (6) onto the second bracket (5) and install the moving mechanism; S4: Connect the corresponding wire conduit fittings; S5: Implement energy conservation assessments.

8. The method for energy-saving retrofitting of a functional section of an air conditioning unit according to claim 7, characterized in that, In step S3, a brand new and identical first functional segment module (6) can be installed on the second bracket (5) and a moving mechanism can be installed, wherein the cross-sectional size of the replaced first functional segment module (6) is ≥ 80% of the cross-sectional size of the removed first functional segment module (6).

9. The method for energy-saving retrofitting of a functional section of an air conditioning unit according to claim 7, characterized in that, In step S4, the wire conduit is inserted from outside the box (1) into the box (1). Sufficient displacement space needs to be reserved inside the box (1), and a sealing kit is used to seal the box (1).

10. A method for energy-saving retrofitting of a functional section of an air conditioning unit according to claim 7, characterized in that, The energy-saving assessment must be conducted under the same wind speed, and includes the following steps: S6. Measurement of system resistance before modification; S7. Energy consumption N corresponding to the operating time t before the modification; S8. Resistance measurement of the modified air conditioning unit; S9. Energy consumption N* and energy saving rate s corresponding to the modified operating time t.

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