A window machine fresh air air conditioner

Abstract

The application belongs to the technical field of fresh air air conditioners, and particularly relates to a novel window fresh air conditioner, wherein a fresh air box is installed on the window air conditioner; the internal space of the fresh air box is a fresh air channel; the fresh air box is connected with the outdoor environment and the indoor environment through the fresh air channel; an air treatment device for treating the incoming fresh air is arranged in the fresh air channel; the novel window fresh air conditioner has the characteristics of convenient installation and reliable use.

Description

Technical Field

[0001] This invention belongs to the field of fresh air conditioning technology, specifically relating to a novel window-type fresh air conditioner. Background Technology

[0002] A fresh air conditioner is a healthy and comfortable type of air conditioner that features fresh air intake. It uses a centrifugal fan to facilitate the circulation and exchange of indoor and outdoor air, and also purifies the air.

[0003] As living standards continue to improve, people have higher and higher requirements for the comfort and aesthetics of building interiors. However, this has also led to increasingly serious indoor air quality problems. The use of the latest building materials, decoration materials, new coatings and adhesives, as well as the widespread use of cleaning agents, insecticides and deodorizers, has resulted in the presence of thousands of unprecedented volatile chemical pollutants in indoor air, such as toluene, formaldehyde, methanol, trichloromethane, trichloroethylene, benzene and ammonia, which seriously endanger human health.

[0004] Following the outbreak of the international oil crisis in 1973, efforts to conserve energy in buildings led to increased building airtightness, which consequently reduced the amount of fresh air supplied by air conditioning systems. This severely deteriorated indoor air quality and resulted in various building-related discomfort symptoms, known as Sick Building Syndrome (SRS).

[0005] Poor indoor air quality not only greatly affects people's physical and mental health and work efficiency, but also causes social problems such as sick leave and increased medical expenses. Therefore, people are increasingly aware of the importance and urgency of solving indoor air quality problems, which has become a research hotspot in the field of building environment.

[0006] In offices, 20%-60% of people suffer from sick building syndrome, which manifests as headaches, fatigue, and mucous membrane irritation. Even if ventilation standards are met, 10%-60% of people still find indoor air quality unacceptable. Research from the Technical University of Denmark shows that poor indoor air quality can easily trigger sick building syndrome, thereby reducing people's work efficiency.

[0007] A study conducted by the Lawrence Lab at the University of California, Berkeley, and the University of Minnesota on the impact of indoor air quality in schools on human health concluded that insufficient fresh air intake in classrooms was a significant factor. Concentration values ​​are too high, some exceeding VOCs, respirable dust, and bacteria also pollute indoor air. In 49 out of 77 reports from a survey of thousands of schools (mainly primary and secondary schools) conducted by the National Institute for Occupational Safety and Health (NIOSH), more than one building factor was listed as being associated with sick building syndrome. These factors mainly included indoor pollution sources, ventilation-related issues, and inadequate maintenance and management of building envelopes and HVAC systems, which led to a deterioration of IAQ and resulted in symptoms such as allergies and asthma that were prevalent in schools.

[0008] The results of repeatable experimental studies conducted in Sweden are similar. These single-blind studies indicate that improving indoor air quality can significantly increase work efficiency. This increase in productivity should be compared with the cost of improving the indoor environment, which is generally less than 1% of labor costs in office buildings in developed countries. Therefore, this should be a strong economic motivation to improve indoor air quality.

[0009] However, traditional fresh air conditioners still have some problems when in use:

[0010] 1. Current fresh air conditioning products often introduce outdoor fresh air by drilling holes of a certain diameter in the wall. Many consumers are averse to drilling holes, and even if they are, the diameter of the fresh air hole cannot be too large. However, the fresh air volume is closely related to the hole diameter. When the hole diameter is very small, the fresh air resistance is very large, which will seriously affect the fresh air volume. At the same time, due to the excessive air intake resistance, it is easy to cause the fan to surge, which has a significant impact on the fan noise and power.

[0011] 2. Due to the limitation of hole size, the fresh air volume of current indoor air conditioners with fresh air function is very small, especially for wall-mounted units, which can only meet the basic needs of a limited number of one or two people.

[0012] 3. Introducing unfiltered fresh air may result in excessively high PM2.5 levels in the outdoor fresh air, or even the presence of coronaviruses. Summary of the Invention

[0013] To address the aforementioned problems in the existing technology, this invention provides a novel window-type fresh air conditioner, which is characterized by convenient installation and reliable use.

[0014] To achieve the above objectives, the present invention provides the following technical solution: a novel window-type fresh air air conditioner, comprising a fresh air box installed on the window-type air conditioner;

[0015] The internal space of the fresh air box is a fresh air duct, and the fresh air box is connected to the outdoor environment and the indoor environment through the fresh air duct.

[0016] The fresh air duct is equipped with an air handling unit for processing the incoming fresh air.

[0017] As a preferred technical solution of the present invention, a window air conditioner is formed by connecting an outdoor unit, a connecting part, and an indoor unit in series, wherein the fresh air duct is connected to the outdoor unit and the indoor unit respectively.

[0018] As a preferred embodiment of the present invention, a fresh air outlet grille communicating with the fresh air box is provided at the end of the indoor unit; a fresh air inlet grille communicating with the fresh air duct is provided on the outer side of the fresh air box; a centrifugal fan is installed in the fresh air box; and the end of the centrifugal fan facing the fresh air inlet grille and the end facing the fresh air outlet grille are respectively the centrifugal air inlet and the centrifugal air outlet.

[0019] As a preferred embodiment of the present invention, an outdoor unit air intake grille is installed on the top surface of the outdoor unit, an indoor unit air intake grille is installed on the top surface of the indoor unit, and an indoor unit air outlet is provided on the outer side of the indoor unit.

[0020] As a preferred embodiment of the present invention, the outdoor unit section is equipped with an outdoor unit motor and an outdoor unit heat exchanger, and an outdoor unit fan is mounted on the output shaft of the outdoor unit motor; the indoor unit section is equipped with an indoor unit motor and an indoor unit heat exchanger, and an indoor unit fan is mounted on the output shaft of the indoor unit motor.

[0021] As a preferred embodiment of the present invention, the bottom ends of both the outdoor unit and the indoor unit are volutes, and volute tongues are installed in the outdoor unit near the outdoor impeller and in the indoor unit near the indoor impeller; a compressor is installed in the connecting part.

[0022] As a preferred embodiment of the present invention, an indoor unit rotating door is installed in the fresh air box near the indoor unit via a damping shaft.

[0023] As a preferred embodiment of the present invention, the air handling device is an air filter plate, and the air filter plate is movably installed inside the fresh air box.

[0024] As a preferred embodiment of the present invention, the air filter screen is installed on the inner wall of the fresh air box via a damping pivot.

[0025] As a preferred embodiment of the present invention, the air filter plate can be slidably installed on the inner wall of the fresh air box in the horizontal or vertical direction using grooves.

[0026] The novel window-type fresh air conditioner of the present invention can be used in the following ways:

[0027] Step 1: Start the compressor, outdoor unit motor and indoor unit motor. The outdoor unit motor drives the outdoor unit fan to rotate and draw in outdoor air, and the indoor unit motor drives the indoor unit fan to rotate and draw in indoor air.

[0028] Step 2: Start the centrifugal fan, and outdoor air enters the fresh air duct through the fresh air intake grille;

[0029] Step 3: Select whether the air filter panel is needed. When the air filter panel is not used, the fresh air passes through the fresh air intake grille and is discharged to the fresh air outlet grille side. Part of the fresh air is directly discharged to the indoor environment from the fresh air outlet grille, and part of the fresh air passes through the indoor unit heat exchanger and is discharged to the indoor environment from the indoor unit outlet 9, reducing the impact of outdoor fresh air on the thermal comfort of the indoor environment.

[0030] Step 4: When the air filter is in use, the fresh air is filtered by the air filter and then discharged to the fresh air outlet grille side. Part of the fresh air is directly discharged into the indoor environment from the fresh air outlet grille, and part of the fresh air is discharged into the indoor environment from the indoor unit outlet after passing through the indoor unit heat exchanger, thereby reducing the impact of outdoor fresh air on the thermal comfort of the indoor environment.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] 1. The fresh air duct of this invention is located inside the window unit, so there is no need to drill holes when introducing fresh air into the room, which is highly acceptable to users; in addition, the area of ​​the fresh air duct is much larger than that of traditional holes, which reduces air intake resistance, can greatly increase the fresh air volume, and reduce power and noise at the same air volume.

[0033] 2. By setting up two fresh air paths, some fresh air can directly enter the indoor environment, while the other fresh air can be heated by a heat exchanger before flowing into the indoor environment, which can reduce the impact of outdoor fresh air on the thermal comfort of the indoor environment.

[0034] 3. The fresh air duct is equipped with an air filter panel. By controlling the obstruction of the fresh air flow by the filter in different scenarios, it can efficiently create an indoor air environment quality that is beneficial to human health. In particular, when the air filter panel is a HEPA filter, it can filter coronavirus particles that seriously endanger human life. Attached Figure Description

[0035] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0036] Figure 1 This is a schematic diagram of the structure of the present invention;

[0037] Figure 2This is a schematic diagram of the axial structure of the present invention;

[0038] Figure 3 This is a schematic diagram of the shaft side structure of the centrifugal fan in this invention;

[0039] Figure 4 This is a top view of the structure of the present invention;

[0040] Figure 5 For the present invention Figure 4 Schematic diagram of the AA-direction cross-section structure;

[0041] Figure 6 This is a top view of the centrifugal fan structure in this invention;

[0042] In the diagram: 1. Outdoor unit; 2. Connecting part; 3. Indoor unit; 4. Fresh air box; 5. Outdoor unit air intake grille; 6. Indoor unit air intake grille; 7. Fresh air intake grille; 8. Fresh air outlet grille; 9. Indoor unit air outlet; 10. Fresh air duct; 11. Centrifugal air outlet; 12. Outdoor unit motor; 13. Outdoor unit heat exchanger; 14. Indoor unit motor; 15. Indoor unit heat exchanger; 16. Centrifugal fan; 17. Centrifugal air inlet; 18. Air filter screen; 19. Indoor unit revolving door; 20. Outdoor unit impeller; 21. Indoor unit impeller; 22. Compressor; 23. Volute; 24. Volute tongue. Detailed Implementation

[0043] 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.

[0044] Example 1

[0045] Please see Figures 1-5 The present invention provides the following technical solution: a novel window-type fresh air air conditioner, comprising a fresh air box 4 installed on the window-type air conditioner;

[0046] The internal space of the fresh air box 4 is the fresh air duct 10, through which the fresh air box 4 connects the outdoor environment and the indoor environment;

[0047] The fresh air duct 10 is equipped with an air handling unit for processing the incoming fresh air.

[0048] Specifically, the system includes a window air conditioner consisting of an outdoor unit 1, a connecting part 2, and an indoor unit 3 connected in series. A fresh air duct 10 connects the outdoor unit 1 and the indoor unit 3. At the end of the indoor unit 3, there is a fresh air outlet grille 8 that communicates with the fresh air box 4. The outer side of the fresh air box 4 is provided with a fresh air inlet grille 7 that communicates with the fresh air duct 10. A centrifugal fan 16 is installed inside the fresh air box 4. The end of the centrifugal fan 16 facing the fresh air inlet grille 7 and the end facing the fresh air outlet grille 8 are respectively a centrifugal air inlet 17 and a centrifugal air outlet 11.

[0049] More specifically, the outdoor unit 1 has an outdoor unit air intake grille 5 installed on its top surface, and the indoor unit 3 has an indoor unit air intake grille 6 installed on its top surface. The outer side of the indoor unit 3 has an indoor unit air outlet 9. In use, the outdoor unit 1, the connecting part 2, and the indoor unit 3 are connected in series to form a window air conditioner. The fresh air box 4 is installed on the side of the window air conditioner. After the centrifugal fan 16 is turned on, the outdoor air enters the fresh air duct 10 through the fresh air intake grille 7. After being treated by the air handling unit, it is discharged to the side of the fresh air outlet grille 8. A portion of the fresh air is directly discharged into the indoor environment from the fresh air outlet grille 8, and a portion of the fresh air is discharged from the indoor unit air outlet 9. Through the equipped air handling unit, the air is treated, which can efficiently create an indoor air environment quality that is beneficial to human health.

[0050] Specifically, according to the appendix Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 5 As shown, in this embodiment, an outdoor unit motor 12 and an outdoor unit heat exchanger 13 are installed in the outdoor unit section 1, and an outdoor unit fan wheel 20 is installed on the output shaft of the outdoor unit motor 12; an indoor unit motor 14 and an indoor unit heat exchanger 15 are installed in the indoor unit section 3, and an indoor unit fan wheel 21 is installed on the output shaft of the indoor unit motor 14. The outdoor unit motor 12 drives the outdoor unit fan wheel 20 to rotate and draw in outdoor air, and the indoor unit motor 14 drives the indoor unit fan wheel 21 to rotate and draw in indoor air. A portion of the fresh air is directly discharged to the indoor environment from the fresh air outlet grille 8, and a portion of the fresh air is discharged to the indoor environment from the indoor unit outlet 9 after passing through the indoor unit heat exchanger 15, thereby reducing the impact of outdoor fresh air on the thermal comfort of the indoor environment.

[0051] Specifically, according to the appendix Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 5As shown, in this embodiment, the bottom of both the outdoor unit 1 and the indoor unit 3 is a volute 23. A volute tongue 24 is installed in the outdoor unit 1 near the outdoor impeller 20 and in the indoor unit 3 near the indoor impeller 21. Therefore, the fans inside both the outdoor unit 1 and the indoor unit 3 are cross-flow fans, ensuring stable airflow. The center of the volute 23 is near the volute tongue 24, and the presence of the volute 23 causes the impeller to generate a circulating flow. A compressor 22 is installed in the connecting part 2 for compressing air.

[0052] Specifically, according to the appendix Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4 As shown, in this embodiment, an indoor unit rotating door 19 is installed in the fresh air box 4 near the indoor unit 3 via a damping shaft. The angle range is 0 degrees to 90 degrees. When the rotation angle is 0 degrees, the fresh air duct 10 is blocked, and outdoor fresh air cannot enter the indoor unit 3. When the rotation angle is greater than 0 degrees, the fresh air duct 10 is opened, and outdoor fresh air can enter the indoor unit 3 through this point and be sent into the indoor space by the drive of the indoor unit motor 14 and the indoor unit fan wheel 21.

[0053] Specifically, according to the appendix Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4 As shown, in this embodiment, the air handling device is an air filter plate 18. Further, the air filter plate 18 is installed on the inner wall of the fresh air box 4 through a damping rotating shaft. Its rotation angle is 0 degrees to 180 degrees. When the rotation angle is 0 degrees, the air filter plate 18 is flush with the fresh air intake grille 7, and all fresh air must pass through the fresh air intake grille 7 before entering the fresh air channel 10. When the rotation angle is 180 degrees, the air filter plate 18 no longer blocks the incoming fresh air.

[0054] Therefore, depending on the usage situation, the air filter panel 18 and the indoor unit rotating door 19 can be rotated to adjust the fresh air intake volume, or the fresh air intake grille 7 can be completely blocked, so that the fresh air must pass through the air filter panel 18 before entering the indoor environment. For example, when the indoor air quality is good, the indoor unit rotating door 19 is closed and the fresh air duct 10 is closed; when the indoor air quality is poor and the outdoor air quality is good, the indoor unit rotating door 19 is opened and the air filter panel 18 is opened to 180 degrees, and the outdoor fresh air enters the indoor unit section 3 directly without treatment, which can quickly improve the indoor environment; when both the indoor and outdoor air quality are poor, the indoor unit rotating door 19 is opened and the air filter panel 18 is closed to 0 degrees, and the outdoor fresh air must pass through the air filter panel 18 before entering the indoor environment.

[0055] Alternatively, commercially available electric air purifiers can be used instead of air handling units. When the outdoor air quality is good, the electric air purifier should be turned off; otherwise, it should be turned on.

[0056] The air filter panel 18 mentioned above is installed at the corresponding position of the fresh air intake grille 7, i.e. the centrifugal air inlet 17. Alternatively, the air filter panel 18 can be installed at the centrifugal air outlet 11 to achieve the same function.

[0057] Specifically, according to the appendix Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4 As shown, in this embodiment, the air filter plate 18 is one or a combination of activated carbon adsorption filter and HEPA filter. The HEPA filter has an efficiency of 99.998% for particles of 0.1 micrometers and 0.3 micrometers. The characteristic of HEPA filter is that air can pass through, but fine particles cannot pass through. HEPA filter can effectively filter PM2.5. At the same time, since many COVID-19 virus particles are on the order of 0.1 micrometers in diameter, HEPA high-efficiency filter can also filter the vast majority of COVID-19 virus particles.

[0058] Example 2

[0059] Example 2 is largely the same as Example 1, except that, specifically, according to the appendix... Figure 6 As shown, in this embodiment, the air filter plate 18 can be slidably installed on the inner wall of the fresh air box 4 using a groove. In this embodiment, the air filter plate 18 is changed from a flip-up installation to a sliding installation. The air filter plate 18 can be slid horizontally or vertically. The air filter plate 18 can be moved to adjust the fresh air, or it can completely block the fresh air intake grille 7, so that the fresh air must pass through the air filter plate 18 before entering the indoor environment. For example, when the indoor air quality is good, the indoor unit rotating door 19 is closed and the fresh air duct 10 is closed; when the indoor air quality is poor and the outdoor air quality is good, the indoor unit rotating door 19 is opened, and the air filter plate 18 is moved to open away from the fresh air intake grille 7, so that the outdoor fresh air enters the indoor unit part 3 directly without treatment, which can quickly improve the indoor environment; when both the indoor and outdoor air quality are poor, the indoor unit rotating door 19 is opened, and the air filter plate 18 is moved to open to safely cover the fresh air intake grille 7, so that the outdoor fresh air must pass through the air filter plate 18 before entering the indoor environment.

[0060] The air filter panel 18 mentioned above is installed at the corresponding position of the fresh air intake grille 7, i.e. the centrifugal air inlet 17. Alternatively, the air filter panel 18 can be installed at the centrifugal air outlet 11 to achieve the same function.

[0061] Example 3

[0062] Example 3 is largely the same as Example 1, except that, specifically, according to the appendix... Figure 4 As shown, in this embodiment of the fresh air air conditioner, no centrifugal fan 16 is installed in the fresh air duct 10, which is the case where no centrifugal fan 16 is used. The outdoor fresh air is delivered into the indoor space by the drive of the indoor unit motor 14 and the indoor unit impeller 21.

[0063] Working principle and usage process of the present invention: When in use, the outdoor unit 1, the connecting part 2 and the indoor unit 3 are connected in series to form a window air conditioner. The fresh air box 4 is installed on the side of the window air conditioner. After the centrifugal fan 16 is turned on, the outdoor air enters the fresh air duct 10 through the fresh air intake grille 7. After being treated by the air handling device, it is discharged to the side of the fresh air outlet grille 8. A part of the fresh air is directly discharged into the indoor environment from the fresh air outlet grille 8, and a part of the fresh air is discharged from the indoor unit outlet 9. Through the equipped air handling device, the air is treated, which can efficiently create an indoor air environment quality that is beneficial to human health.

[0064] When the indoor air quality is good, the indoor unit's rotating door 19 is closed, and the fresh air duct 10 is closed. When the indoor air quality is poor and the outdoor air quality is good, the indoor unit's rotating door 19 is open, and the air filter panel 18 is opened to 180 degrees. Outdoor fresh air enters the indoor unit section 3 directly without treatment, which can quickly improve the indoor environment. When both indoor and outdoor air quality are poor, the indoor unit's rotating door 19 is open, and the air filter panel 18 is closed to 0 degrees. Outdoor fresh air must pass through the air filter panel 18 before it can enter the indoor environment.

[0065] The fresh air conditioner of the present invention may also be used without centrifugal fan 16. In the case of no centrifugal fan 16, outdoor fresh air is delivered into the indoor space by the drive of indoor unit motor 14 and indoor unit impeller 21.

[0066] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A window-type fresh air conditioner, characterized in that: include: The outdoor unit (1), the connecting part (2) and the indoor unit (3) are connected in series to form a window air conditioner. The fresh air duct (10) connects the outdoor unit (1) and the indoor unit (3) respectively. The fresh air box (4) is installed on the side of the window air conditioner. The compressor (22) is installed in the connecting part (2). The internal space of the fresh air box (4) is a fresh air duct (10), and the fresh air box (4) is connected to the outdoor environment and the indoor environment through the fresh air duct (10); The indoor unit (3) is provided with a fresh air outlet grille (8) that communicates with the fresh air box (4) at its end; the fresh air box (4) is provided with a fresh air inlet grille (7) that communicates with the fresh air duct (10) on its outer side; the outdoor unit (1) is provided with an outdoor unit inlet grille (5) on its top surface; the indoor unit (3) is provided with an indoor unit inlet grille (6) on its top surface; and the indoor unit (3) is provided with an indoor unit outlet (9) on its outer side. The fresh air duct (10) is equipped with an air handling device for processing the incoming fresh air; The air handling device is an air filter plate (18), which is installed on the inner wall of the fresh air box (4) via a damping shaft; If the air filter plate (18) does not rotate, it is in a blocking state. The air filter plate (18) and the fresh air intake grille (7) are flush. Outdoor fresh air must pass through the fresh air intake grille (7) before it can enter the fresh air channel (10). If the air filter plate (18) rotates, it is in the open state, and the outdoor fresh air enters the indoor unit (3) directly without treatment. Outdoor air enters the fresh air duct (10) through the fresh air intake grille (7), and after being processed by the air handling device, it is discharged to the side of the fresh air outlet grille (8). A portion of the fresh air is directly discharged to the indoor environment through the fresh air outlet grille (8), and a portion of the fresh air is discharged from the indoor unit outlet (9) after passing through the indoor unit heat exchanger (15).

2. A window-type fresh air conditioner according to claim 1, characterized in that: A centrifugal fan (16) is installed in the fresh air box (4), and the end of the centrifugal fan (16) facing the fresh air intake grille (7) and the end facing the fresh air outlet grille (8) are respectively the centrifugal air inlet (17) and the centrifugal air outlet (11).

3. A window-type fresh air conditioner according to claim 1, characterized in that: The outdoor unit section (1) is equipped with an outdoor unit motor (12) and an outdoor unit heat exchanger (13), and an outdoor unit fan (20) is installed on the output shaft of the outdoor unit motor (12); the indoor unit section (3) is equipped with an indoor unit motor (14) and an indoor unit heat exchanger (15), and an indoor unit fan (21) is installed on the output shaft of the indoor unit motor (14).

4. A window-type fresh air conditioner according to claim 3, characterized in that: The bottom of both the outdoor unit (1) and the indoor unit (3) is a volute (23). A volute tongue (24) is installed in the outdoor unit (1) near the outdoor unit impeller (20) and in the indoor unit (3) near the indoor unit impeller (21).

5. A window-type fresh air conditioner according to claim 1, characterized in that: The indoor unit rotating door (19) is installed in the fresh air box (4) near the indoor unit part (3) via a damping rotating shaft.

6. A window-type fresh air conditioner according to claim 5, characterized in that: The air filter plate (18) can be slidably installed on the inner wall of the fresh air box (4) in the horizontal or vertical direction using grooves.

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