A total air heat pump system

Abstract

The application discloses a full-air heat pump system, comprising: a machine body, an air supply assembly, a first differential pressure sensor and a second differential pressure sensor, the machine body is provided with an air supply port, the air supply assembly is arranged in the machine body, and an air outlet is opposite to the air supply port, the first differential pressure sensor and the second differential pressure sensor are both arranged on the lower side of an air inlet of the air supply assembly, wherein the first differential pressure sensor is used for detecting the air pressure difference value between the air inlet of the air supply assembly and the air supply port, the second differential pressure sensor is used for detecting the air pressure difference value between the air supply port and the air outside the machine body, and the first differential pressure sensor and the second differential pressure sensor are respectively electrically connected with the air supply assembly. The application cooperatively monitors the air pressure through the two groups of sensors, forms a comprehensive and accurate air pressure monitoring system, ensures that the detected data is accurate, and then accurately adjusts the air supply amount.

Description

Technical Field

[0001] This application relates to the technical field of air systems, and more particularly to an all-air heat pump system. Background Technology

[0002] In environmental control systems, all-air heat pump systems are a widely used air conditioning method that centrally processes and distributes air to meet internal requirements for temperature, humidity, and air quality. The efficient operation of this system relies on the precise monitoring and control of several key parameters, among which effective monitoring of wind pressure plays a crucial role. Wind pressure not only directly affects the efficiency and stability of airflow but also serves as an important basis for evaluating system performance, optimizing energy use, and preventing potential failures.

[0003] However, traditional wind pressure monitoring solutions face several challenges, which to some extent limit the improvement of system performance and the optimization of user experience. The primary problem lies in the lack of centralized and uniformity in the layout and mounting of sensors. Due to historical design habits or technological limitations, sensors are often scattered and installed in different parts of the system. This decentralized layout not only increases maintenance costs but may also lead to inconsistencies and delays in monitoring data, making it difficult for the system to obtain comprehensive and accurate real-time wind pressure information.

[0004] Furthermore, the unreasonable placement of monitoring points is a significant drawback of traditional solutions. The lack of scientific basis for point selection and standardized setup procedures leads to the neglect of wind pressure changes in some critical areas, while other non-critical areas may be over-monitored. This unbalanced monitoring strategy directly affects the accuracy and representativeness of the data. Therefore, even if the system collects a large amount of data, it is difficult to accurately reflect the actual operating status of the entire air system, thus failing to provide a reliable basis for real-time adjustment of the air supply volume. Summary of the Invention

[0005] The purpose of this application is to provide an all-air heat pump system that uses two sets of sensors to monitor wind pressure in a coordinated manner, forming a comprehensive and accurate wind pressure monitoring system to ensure that the detected data is accurate and thus accurately adjust the air supply volume.

[0006] To achieve the above objectives, this application adopts the following technical solution:

[0007] On one hand, an all-air heat pump system is provided, including: a body, an air supply assembly, a first differential pressure sensor, and a second differential pressure sensor. The body is provided with an air outlet, the air supply assembly is disposed inside the body and the air outlet is opposite to the air supply outlet, the first differential pressure sensor and the second differential pressure sensor are both disposed below the air inlet of the air supply assembly, wherein the first differential pressure sensor is used to detect the air pressure difference between the air inlet of the air supply assembly and the air outlet, the second differential pressure sensor is used to detect the air pressure difference between the air outlet and the outside of the body, and the first differential pressure sensor and the second differential pressure sensor are respectively electrically connected to the air supply assembly.

[0008] Furthermore, the first differential pressure sensor is provided with a first detection point and a second detection point. The first detection point is located on the lower side of the air inlet of the air supply assembly, and the second detection point is located at the air outlet.

[0009] Furthermore, the vertical distance between the first detection point and the air inlet of the air supply component is S, where 100mm≤S≤150mm.

[0010] Furthermore, the second differential pressure sensor is provided with a third detection point and a fourth detection point. The third detection point is located on the outside of the body, and the fourth detection point is located at the air outlet.

[0011] Furthermore, the machine body has a through hole through which a pipe passes. The pipe extends horizontally to the outside of the machine body as the third detection point. The vertical distance between the through hole and the second differential pressure sensor is H, where 90mm≤H≤100mm.

[0012] Furthermore, the second detection point and the fourth detection point are horizontally spaced apart at the air outlet, and a shielding structure is provided above both the second detection point and the fourth detection point.

[0013] Furthermore, the first differential pressure sensor is connected to the first detection point and the second detection point via pipes, and the second differential pressure sensor is connected to the third detection point and the fourth detection point via pipes, all of which are transparent flexible tubes.

[0014] Furthermore, the machine body is provided with a wiring structure and multiple fixing clips. The wiring structure has a wire groove for the pipe to pass through, and the fixing clips clamp the pipe to the machine body.

[0015] Furthermore, the interior of the casing is divided into left and right air supply channels and air inlet channels. The lower part of the air inlet channel is connected to the lower part of the air supply channel through a heat exchanger. The air supply assembly is located in the middle of the air supply channel. The air outlet is connected to the top of the air supply channel. A bracket is provided on the inner wall of the air supply channel away from the air inlet channel. The first differential pressure sensor and the second differential pressure sensor are spaced apart on the bracket.

[0016] Furthermore, the machine body is provided with an inspection port opposite to the positions of the first differential pressure sensor and the second differential pressure sensor, and the inspection port is provided with a detachable inspection door.

[0017] The beneficial effects of this application are as follows: This solution incorporates an air supply component within the unit body, and simultaneously equips a first differential pressure sensor and a second differential pressure sensor on the lower side of the air inlet of the air supply component, forming a comprehensive and accurate air pressure monitoring system. The first differential pressure sensor detects the air pressure difference between the air inlet and outlet of the air supply component, reflecting the air pressure loss during air supply; while the second differential pressure sensor detects the air pressure difference between the outlet and the outside of the unit body (i.e., the external environment), reflecting the system's adaptability to the external environment and the external resistance that may be encountered during air supply. These two sets of sensors feed back the real-time detected air pressure data to the control unit of the air supply component. The control unit analyzes the data according to a preset algorithm and thresholds to achieve precise adjustment of the air supply volume.

[0018] This solution, through centralized sensor deployment and scientifically selected locations, ensures the consistency and real-time nature of monitoring data, improving data accuracy and representativeness. Simultaneously, based on precise wind pressure data, the system can intelligently adjust the airflow, not only improving air delivery efficiency but also optimizing energy use and reducing operating costs. Furthermore, real-time monitoring of wind pressure changes can promptly detect and warn of potential faults, such as duct blockages and fan performance degradation, helping to take proactive measures to prevent malfunctions and ensure stable system operation. Attached Figure Description

[0019] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is an internal schematic diagram of the all-air heat pump system described in the embodiments of this application. Figure 1 ;

[0021] Figure 2 Examples of this application Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is an internal schematic diagram of the all-air heat pump system described in the embodiments of this application. Figure 2 ;

[0023] Figure 4 Examples of this application Figure 2 Enlarged view of point B in the middle;

[0024] Figure 5 This is an internal schematic diagram of the all-air heat pump system described in the embodiments of this application. Figure 3 ;

[0025] Figure 6 Examples of this application Figure 5 Enlarged view of point C in the middle;

[0026] Figure 7 This is a cross-sectional view of the all-air heat pump system described in the embodiments of this application.

[0027] In the diagram: 1. Body; 101. Air outlet; 2. Air supply assembly; 3. First differential pressure sensor; 301. First detection point; 302. Second detection point; 4. Second differential pressure sensor; 401. Third detection point; 402. Fourth detection point; 5. Heat exchanger; 6. Pipeline; 7. Cable tray; 8. Rubber protective sleeve; 9. Shielding structure; 10. Bracket. Detailed Implementation

[0028] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] like Figures 1-7 As shown, this embodiment provides an all-air heat pump system, including: a body 1, an air supply assembly 2, a first differential pressure sensor 3, and a second differential pressure sensor 4. The body 1 is provided with an air outlet 101. The air supply assembly 2 is disposed inside the body 1, and its air outlet is opposite to the air outlet 101. The first differential pressure sensor 3 and the second differential pressure sensor 4 are both disposed below the air inlet of the air supply assembly 2. The first differential pressure sensor 3 is used to detect the air pressure difference between the air inlet of the air supply assembly 2 and the air outlet 101. The second differential pressure sensor 4 is used to detect the air pressure difference between the air outlet 101 and the outside of the body 1. The first differential pressure sensor 3 and the second differential pressure sensor 4 are electrically connected to the air supply assembly 2.

[0032] Based on the above scheme, when the all-air heat pump system starts, the air supply component 2 begins to work, drawing in air, processing it, and then delivering it out through the air outlet 101 to meet the indoor requirements for temperature, humidity, and air quality. The first differential pressure sensor 3 is located below the air inlet of the air supply component 2 and is responsible for detecting the air pressure difference between the air inlet and outlet 101. This difference reflects the air pressure changes inside the air supply component 2, especially the air pressure loss during air delivery. The second differential pressure sensor 4 is also located below the air inlet of the air supply component 2. It detects the air pressure difference between the outlet 101 and the outside of the unit 1 (i.e., the external environment). This difference reflects the system's adaptability to the external environment and the external resistance that may be encountered during air delivery. Both sets of sensors transmit the detected air pressure difference values ​​to the control unit of the air supply component 2 in real time. Based on this data, combined with preset algorithms and thresholds, the control unit analyzes the system's operating status, including air pressure stability and air delivery efficiency. Based on the data analysis results, the control unit can adjust the air volume of the air supply component 2 in real time. For example, if excessive internal air pressure loss is detected in the air supply component 2, it may be necessary to increase the air volume to maintain a stable air supply effect; if external resistance increases, it may be necessary to adjust the air supply strategy to adapt to environmental changes.

[0033] In this scheme, firstly, by placing both sets of differential pressure sensors below the air inlet of the air supply component 2, a centralized sensor layout is achieved. This layout not only reduces maintenance costs but also ensures the consistency and real-time nature of the monitoring data, enabling the system to more comprehensively grasp wind pressure changes. Secondly, by rationally setting the detection points (i.e., the positions of the first differential pressure sensor 3 and the second differential pressure sensor 4) and adopting a standardized setting process, the accuracy and representativeness of the monitoring data are ensured. This scientific point selection allows the system to more accurately reflect the actual operating status of the entire air system. Thirdly, based on the precise wind pressure data provided by the two sets of sensors, the system can achieve precise adjustment of the air supply volume, which not only improves air supply efficiency but also optimizes energy use and reduces operating costs. Finally, by monitoring wind pressure changes in real time, the system can promptly detect and warn of potential faults, such as blockage of the air supply duct 6 or deterioration of fan performance. This helps to take preventative measures to avoid faults and ensure the stable operation of the system.

[0034] Furthermore, the first differential pressure sensor 3 is provided with a first detection point 301 and a second detection point 302. The first detection point 301 is located below the air inlet of the air supply assembly 2, and the second detection point 302 is located at the air outlet 101. The first detection point 301 is carefully arranged below the air inlet of the air supply assembly 2. This position has relatively large space and no obstructions, which makes it easy to read the wind pressure data at the air inlet of the air supply assembly 2. This ensures that the first detection point 301 can accurately capture the initial wind pressure state of the air before entering the air supply assembly 2, providing a reliable benchmark for subsequent differential pressure calculation. The second detection point 302 is cleverly positioned at the top of the inner wall of the air outlet 101. This location was carefully chosen: firstly, it is unobstructed and a certain distance from the air supply component 2, ensuring the stability of the airflow organization; secondly, because it is located at the outlet end of the air outlet 101, it can accurately obtain the air pressure information of the air before it is delivered into the room after being processed by the air supply component 2. This design allows the second detection point 302 to more accurately reflect the air pressure state after air delivery, providing strong data support for adjusting the system's air delivery strategy. By comparing the data from the first detection point 301 and the second detection point 302, the system can accurately calculate the pressure difference before and after the air supply component 2. This pressure difference data is crucial for evaluating the performance of the air supply component 2, monitoring air pressure loss, and optimizing the air delivery strategy. It helps the system achieve precise adjustment of the air volume, improve air delivery efficiency and energy efficiency, thereby ensuring stable system operation and optimized user experience.

[0035] Specifically, the vertical distance between the first detection point 301 and the air inlet of the air supply component 2 is S, where 100mm≤S≤150mm. This setting aims to ensure that the first detection point 301 can accurately capture the wind pressure data at the air inlet of the air supply component 2, while avoiding measurement errors caused by distances that are too close or too far.

[0036] More specifically, in this embodiment, the value of S is set to 124 mm. This value was chosen after repeated experiments and verifications, ensuring both measurement accuracy and ease of installation and practicality. When the first detection point 301 is at this height, it effectively avoids the turbulent area near the air inlet, thereby ensuring that the wind pressure data read is more stable and reliable.

[0037] Meanwhile, the second differential pressure sensor 4 is equipped with a third detection point 401 and a fourth detection point 402. The third detection point 401 is located on the outside of the body 1, and the fourth detection point 402 is located at the air outlet 101. The third detection point 401 is located on the outside of the body 1, where there are no obstructions, allowing for easy reading of the pressure value outside the body 1. This design enables the third detection point 401 to accurately capture the wind pressure conditions of the external environment, providing the system with crucial external wind pressure data. This data is significant for evaluating the system's adaptability to the external environment, monitoring changes in external wind pressure, and optimizing the air supply strategy. The fourth detection point 402 is similarly positioned to the second detection point 302, located at the air outlet 101. The first differential pressure sensor 3, with its first detection point 301 and second detection point 302, can accurately capture the air pressure difference between the air inlet and outlet 101 of the air supply assembly 2. The second differential pressure sensor 4, with its third detection point 401 and fourth detection point 402, achieves comprehensive monitoring of the air pressure outside the unit 1 and at the outlet 101, accurately capturing the air pressure conditions inside and outside the unit 1. By combining the monitoring results of the first differential pressure sensor 3 and the second differential pressure sensor 4, the system can gain a more comprehensive understanding of air pressure changes. This combination not only improves the accuracy of air pressure monitoring but also enables the system to more accurately evaluate the performance of the air supply assembly 2, monitor air pressure loss, and optimize the air supply strategy. Simultaneously, because the system can acquire real-time differential pressure data inside and outside the unit 1, as well as before and after air supply, it can promptly detect and warn of potential faults, such as blockage of the air supply duct 6 or deterioration of fan performance, thereby ensuring the stable operation of the system.

[0038] Furthermore, the body 1 has a through hole through which a pipe 6 passes. The pipe 6 extends horizontally to the outside of the body 1 as the third detection point 401. The vertical distance between the through hole and the second differential pressure sensor 4 is H, where 90mm ≤ H ≤ 100mm. The vertical distance H between the through hole and the second differential pressure sensor 4 has been precisely set, with the value of H strictly controlled within the range of 90mm to 100mm. In this embodiment, the specific value of H is set to 94mm. This distance was chosen after repeated experiments and verification, ensuring measurement accuracy while also considering ease of installation and practicality. Choosing this location to create a through hole and fix the detection head with screws as the third detection point 401 has several advantages: First, this location is close to the second differential pressure sensor 4, making the connection of the pipe 6 more convenient and reducing the complexity and cost of the installation process; second, because the position and height of the through hole have been carefully designed, it can ensure that the third detection point 401 can accurately capture the wind pressure data outside the fuselage 1, providing the system with important external wind pressure information; finally, this design also improves the scalability and flexibility of the system, providing convenience for possible future system upgrades or modifications.

[0039] It is important to note that, such as Figure 7 As shown, the vertical distance S = 124 mm between the first detection point 301 and the air inlet of the air supply component 2, and the vertical distance H = 94 mm between the through hole and the second differential pressure sensor 4, are not only important individually, but also correlated, forming a key factor in optimizing system performance. Setting these two vertical distances helps ensure sufficient stability and uniformity of airflow as it passes through the air supply component 2 and the detection point. The distance S = 124 mm allows for buffering and adjustment of the airflow before it enters the air supply component 2, reducing turbulence and eddies, thereby improving measurement accuracy. The distance H = 94 mm ensures that the second differential pressure sensor 4 can operate in a relatively stable airflow environment, avoiding measurement errors caused by airflow fluctuations. A reasonable vertical distance setting helps improve the overall efficiency of the system. By optimizing the airflow path and reducing unnecessary energy loss, the system can achieve higher air supply efficiency with lower energy consumption, which is significant for energy conservation, emission reduction, and lower operating costs. The selection of these two distances also considers the maintainability of the system. For example, a distance of S=124mm provides sufficient operating space for technicians to easily inspect and maintain the air supply assembly 2. Meanwhile, a distance of H=94mm makes the replacement and calibration of the second differential pressure sensor 4 much easier.

[0040] Furthermore, the vertical distance setting between the first detection point 301 and the second differential pressure sensor 4 is crucial for ensuring measurement accuracy. Distances that are too close or too far can lead to airflow instability or increased measurement errors. These two distance values, obtained through precise calculation and testing, can minimize measurement errors and improve the system's accuracy and reliability. A reasonable vertical distance setting helps optimize the overall system performance. By adjusting the airflow path and reducing energy loss, the system can operate with higher efficiency, thus meeting diverse user needs. By optimizing airflow stability and system efficiency, users can enjoy a more comfortable and efficient air delivery experience. Moreover, the convenient maintenance design reduces maintenance costs and operational difficulties, improving overall user satisfaction.

[0041] In some embodiments, the second detection point 302 and the fourth detection point 402 are horizontally spaced apart at the air outlet 101. This horizontal spacing ensures comprehensive and accurate capture of wind pressure changes during the air supply process. Furthermore, to further improve the accuracy and reliability of the measurement, a shielding structure 9 is provided above both the second detection point 302 and the fourth detection point 402. The shielding structure 9 is made of lightweight and corrosion-resistant materials to ensure it maintains good performance over long-term use. Its shape design is carefully optimized to effectively block dust and foreign objects from entering the detection port, thus avoiding interference or damage to the wind pressure measurement; simultaneously, it does not significantly affect the wind pressure measurement itself, ensuring the accuracy and reliability of the measurement results. Moreover, the shielding structure 9 can be regularly maintained and cleaned to effectively remove accumulated dust and foreign objects, ensuring it remains in good working condition. This easy-to-maintain design not only extends the service life of the shielding structure 9 but also improves the stability and reliability of the entire system.

[0042] Furthermore, the first differential pressure sensor 3 is connected to the first detection point 301 and the second detection point 302 via pipes 6, and the second differential pressure sensor 4 is connected to the third detection point 401 and the fourth detection point 402 via pipes 6. All pipes 6 are transparent flexible tubes. The transparent material of the flexible tubes allows for direct observation of any foreign objects or blockages inside the tubes, which is crucial for timely detection and resolution of problems, as any foreign objects or blockages within the pipes 6 can severely affect the accuracy of wind pressure measurements. Regularly observing the transparent flexible tubes ensures that the pipes 6 remain unobstructed, thereby guaranteeing the accuracy and reliability of the measurement results. Transparent flexible tubes also facilitate installation through various structures. In complex system layouts, pipes 6 often need to pass through walls, partitions, or other structures. Due to their flexibility and adaptability, transparent flexible tubes can more easily adapt to these installation requirements, reducing the complexity and cost of the installation process.

[0043] Furthermore, a transparent rigid flexible tube with a diameter of 8mm was specifically chosen for the connection. This size was carefully selected, as it meets the data transmission requirements while ensuring the strength and durability of pipe 6. At the same time, the rigid flexible tube offers better shape retention compared to a plain flexible tube, maintaining a stable connection during long-term use.

[0044] Furthermore, the housing 1 is equipped with a wiring structure and multiple fixing clips. The wiring structure has grooves 7 for the pipes 6 to pass through, and the fixing clips clamp the pipes 6 onto the housing 1. The grooves 7 provide a clear path for the pipes 6. The design of the grooves 7 not only ensures the neat arrangement of the pipes 6 but also avoids intersections and interference between them, thereby improving the overall performance and reliability of the system. In addition, the grooves 7 are also designed with protective covers, which effectively prevent the pipes from bending or breaking due to external forces, further ensuring the accuracy and stability of the wind pressure signal transmission. During the pipe 6 arrangement, bends in the middle are strictly avoided. Bending of the pipe 6 may cause attenuation or distortion of the wind pressure signal, thus affecting the accuracy of the measurement. Therefore, it is necessary to ensure that the pipe 6 remains straight throughout the arrangement process to reduce signal loss during transmission. When the pipe 6 needs to pass through sheet metal areas, a rubber protective sleeve 8 is specially provided. These rubber protective sleeves 8 can effectively prevent the sheet metal from cutting the pipe 6, thereby ensuring the safety and integrity of the pipe 6.

[0045] Meanwhile, to further secure the pipe 6, multiple fixing clips are installed on the machine body 1. These clips clamp the pipe 6 to the machine body 1, preventing it from shaking or falling off during operation. The use of fixing clips ensures the stability and reliability of the pipe 6, thereby improving the quality of wind pressure signal transmission.

[0046] It is worth mentioning that the interior of the body 1 is divided into left and right air supply channels and air inlet channels. The lower part of the air inlet channel is connected to the lower part of the air supply channel through a heat exchanger 5. The air supply assembly 2 is located in the middle of the air supply channel. The air outlet 101 is connected to the top of the air supply channel. A bracket 10 is provided on the inner wall of the air supply channel away from the air inlet channel. The first differential pressure sensor 3 and the second differential pressure sensor 4 are spaced apart on the bracket 10. The lower part of the air inlet channel is connected to the lower part of the air supply channel through the heat exchanger 5. This design allows the incoming air to exchange heat through the heat exchanger 5 after filtration and pretreatment, thereby regulating the temperature and humidity of the supplied air. This not only improves the comfort of the supplied air but also enables the system to intelligently adjust according to changes in the external environment to meet different user needs. The air supply assembly 2 is located in the middle of the air supply channel, ensuring that the airflow can be delivered evenly and stably to the air outlet 101. The air outlet 101 is connected to the top of the air supply channel, a layout that allows the air supply to directly and efficiently cover the target area.

[0047] Crucially, when the air supply duct is on the left and the air intake duct is on the right, a bracket 10 is installed on the left side of the air supply duct, and the first differential pressure sensor 3 and the second differential pressure sensor 4 are spaced apart on this bracket 10. This design not only makes full use of the internal space of the unit 1, but also ensures that the differential pressure sensors are in positions with stable airflow organization, thereby improving the accuracy and reliability of the measurement. The placement of both differential pressure sensors on the lower left side of the air supply assembly 2 is a well-considered layout. This location offers stable internal airflow organization, good space utilization, no obstructions, and convenient access for ductwork to the outside of the unit 1 for setting up detection points. This not only improves the overall performance and reliability of the system, but also provides users with a more convenient and efficient user experience.

[0048] In addition, since the air supply channel is located on the left and the air inlet channel is on the right, and the first differential pressure sensor 3 and the second differential pressure sensor 4 are installed on the left side of the air supply channel instead of the right, this means that when the air is heated by the heat exchanger 5, the air blown up is closer to the left side, which means it is easier to contact the first differential pressure sensor 3 and the second differential pressure sensor 4 on the left side. If they were installed on the right side, there would be blind spots, resulting in inaccurate detection.

[0049] It is important to note that when the air inlet channel is located on the left and the air outlet channel is located on the right, the bracket should be installed on the right side of the air outlet channel, that is, on the side away from the air inlet channel, in order to improve the accuracy of the test.

[0050] The bracket 10 is set at a height of 271mm, which is convenient for observation and replacement / maintenance of the first differential pressure sensor 3 and the second differential pressure sensor 4.

[0051] Meanwhile, the main body 1 is equipped with an inspection port opposite to the positions of the first differential pressure sensor 3 and the second differential pressure sensor 4, and the inspection port is equipped with a detachable inspection door. The inspection port allows technicians easy access to key components such as the first differential pressure sensor 3 and the second differential pressure sensor 4, facilitating inspection, maintenance, and replacement. This not only shortens repair time and reduces maintenance costs but also improves the overall reliability and lifespan of the system. The detachable inspection door further enhances operational convenience, allowing technicians to quickly open and close the inspection port without the need for complex tools or equipment. This not only improves work efficiency but also ensures safety during the maintenance process.

[0052] Furthermore, the detachable access door means users can make flexible adjustments according to their actual needs. For example, when frequent inspections and maintenance are required, users can choose to keep the access door open for easy observation and operation. When no inspection is needed, users can close the access door to keep the machine body 1 clean and aesthetically pleasing.

[0053] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0054] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0055] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0056] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. An all-air heat pump system, characterized in that, include: The assembly includes a body (1), an air supply component (2), a first differential pressure sensor (3), and a second differential pressure sensor (4). The body (1) is provided with an air outlet (101). The air supply component (2) is located inside the body (1) and its outlet is opposite to the air supply outlet (101). The first differential pressure sensor (3) and the second differential pressure sensor (4) are both located below the air inlet of the air supply component (2). The first differential pressure sensor (3) is used to detect the air pressure difference between the air inlet of the air supply component (2) and the air outlet (101). The second differential pressure sensor (4) is used to detect the air pressure difference between the air outlet (101) and the outside of the body (1). The first differential pressure sensor (3) and the second differential pressure sensor (4) are electrically connected to the air supply component (2). The first differential pressure sensor (3) is provided with a first detection point (301) and a second detection point (302). The first detection point (301) is located on the lower side of the air inlet of the air supply assembly (2), and the second detection point (302) is located at the air outlet (101). The vertical distance between the first detection point (301) and the air inlet of the air supply assembly (2) is S, where 100mm≤S≤150mm; The second differential pressure sensor (4) is provided with a third detection point (401) and a fourth detection point (402). The third detection point (401) is located outside the body (1), and the fourth detection point (402) is located at the air outlet (101). The body (1) has a through hole through which a pipe (6) passes. The pipe (6) extends horizontally to the outside of the body (1) as the third detection point (401). The vertical distance between the through hole and the second differential pressure sensor (4) is H, where 90mm≤H≤100mm.

2. The all-air heat pump system according to claim 1, characterized in that, The second detection point (302) and the fourth detection point (402) are horizontally spaced apart at the air outlet (101), and a shielding structure (9) is provided above the second detection point (302) and the fourth detection point (402).

3. The all-air heat pump system according to claim 1, characterized in that, The first differential pressure sensor (3) is connected to the first detection point (301) and the second detection point (302) respectively through pipes (6), and the second differential pressure sensor (4) is connected to the third detection point (401) and the fourth detection point (402) respectively through pipes (6). All pipes (6) are transparent flexible tubes.

4. The all-air heat pump system according to claim 3, characterized in that, The machine body (1) is provided with a wiring structure and multiple fixing clips. The wiring structure is provided with a wire groove (7) for the pipe (6) to pass through. The fixing clips clamp the pipe (6) onto the machine body (1).

5. The all-air heat pump system according to any one of claims 1-4, characterized in that, The interior of the body (1) is divided into left and right air supply channels and air inlet channels. The lower part of the air inlet channel is connected to the lower part of the air supply channel through a heat exchanger (5). The air supply assembly (2) is located in the middle of the air supply channel. The air outlet (101) is connected to the top of the air supply channel. A bracket (10) is provided on the inner wall of the air supply channel away from the air inlet channel. The first differential pressure sensor (3) and the second differential pressure sensor (4) are spaced apart on the bracket (10).

6. The all-air heat pump system according to any one of claims 1-4, characterized in that, The body (1) is provided with an inspection port opposite to the positions of the first differential pressure sensor (3) and the second differential pressure sensor (4), and the inspection port is provided with a detachable inspection door.

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