Top and bottom air conditioners and their control methods

Abstract

This invention provides a top-and-bottom air conditioner and its control method. The top-and-bottom air conditioner includes: a housing having a first upper air outlet, a first lower air outlet, a second upper air outlet, and a second lower air outlet; an indoor heat exchanger disposed within the housing, dividing the housing space into an upper space and a lower space; a first air duct disposed within the upper space and communicating with the second upper air outlet; a second air duct disposed within the lower space and communicating with the first lower air outlet; a first cross-flow fan blade disposed within the first air duct; and a second cross-flow fan blade disposed within the second air duct. Both the first upper air outlet and the first air duct can communicate with the second air duct, and both the second air duct and the second lower air outlet can communicate with the first air duct. According to the top-and-bottom air conditioner and its control method of this invention, cold air is not blown directly during cooling, and hot air is quickly vented during heating, without generating excessive noise.

Description

Technical Field

[0001] This invention relates to the field of air conditioning equipment technology, and more specifically, to a top and bottom air outlet air conditioner and its control method. Background Technology

[0002] With economic development and the continuous improvement of people's living standards, the pursuit of quality of life is increasing, especially in terms of home environment comfort. As a key device for regulating indoor temperature and air quality, the importance of air conditioning systems is self-evident. Air conditioners not only need to provide high efficiency in cooling and heating, but also ensure comfort and quiet operation during use to meet the needs of different living scenarios.

[0003] In cooling mode, residential wall-mounted air conditioners often blow cold air directly onto people due to limitations in their duct structure and air delivery method. This not only reduces user comfort but can also lead to health problems such as colds and muscle tension. Although some air conditioner products on the market have attempted to improve this situation by adjusting the angle of the air deflector, achieving a certain degree of anti-direct-blowing effect, the limitations of the air deflector adjustment range and air delivery mode mean that cold air cannot be completely prevented from blowing directly onto people, especially in large spaces, making it difficult to achieve uniform cooling throughout the room.

[0004] Meanwhile, to improve airflow, some air conditioners employ centrifugal fan designs to achieve a single-fan, dual-outlet airflow mode. However, centrifugal fans generate significant noise during operation, especially in high-airflow mode, where noise levels rise dramatically. This is a considerable drawback for spaces requiring a quiet environment, such as bedrooms. High noise not only affects sleep quality but may also negatively impact mental health. Therefore, reducing air conditioner noise while maintaining effective airflow is a significant technical challenge facing the industry.

[0005] In summary, current household wall-mounted air conditioners cannot simultaneously achieve the desired effect of preventing cold air from blowing directly on the floor during cooling, ensuring hot air falls quickly to the ground during heating, and avoiding excessive noise. Summary of the Invention

[0006] The main objective of this invention is to provide an air conditioner with top and bottom air outlets and its control method, which can ensure that the cold air does not blow directly when cooling and the hot air falls quickly to the ground when heating, without generating excessive noise.

[0007] To achieve the above objectives, according to one aspect of the present invention, a top-and-bottom air conditioning unit is provided, comprising:

[0008] The casing has a first upwind opening, a first downwind opening, a second upwind opening, and a second downwind opening;

[0009] The indoor heat exchanger is installed inside the shell, dividing the space inside the shell into an upper space and a lower space;

[0010] The first air duct is located in the upper space and is connected to the second upwind vent.

[0011] The second air duct is located in the lower space and is connected to the first downwind vent.

[0012] The first cross-flow fan blade is installed inside the first air duct;

[0013] The second cross-flow fan blade is installed inside the second air duct;

[0014] Both the first upwind opening and the first air duct can be connected to the second air duct, and both the second air duct and the second downwind opening can be connected to the first air duct.

[0015] Furthermore, an upper air guide plate is provided at the second air inlet. The upper air guide plate has an air guiding state where the second air inlet is opened to guide the outgoing air and a filtering state where the second air inlet is closed to filter the incoming air.

[0016] Furthermore, the upper air guide plate includes a shielding part and a filtering part. The shielding part has a first position covering the filtering part and a second position allowing the filtering part to pass. When the upper air guide plate is in the air guiding state, the shielding part is located in the first position, and when the upper air guide plate is in the filtering state, the shielding part is located in the second position.

[0017] Furthermore, the shielding part includes a roller shutter, the upper air guide plate also includes a sliding track and a roller, the filtering part includes an intermediate filter screen, the roller shutter is slidably disposed in the sliding track, the first end of the roller shutter is wound on the roller, and the intermediate filter screen is installed inside the sliding track.

[0018] Furthermore, the roller shutter has two layers, with a filter screen located between the two layers.

[0019] Furthermore, the roller is set at the first end of the sliding track, and the second end of the sliding track is provided with an elastic element, and the second end of the roller blind is connected to the elastic element.

[0020] Furthermore, a lower air guide plate is installed at the first downwind vent.

[0021] Furthermore, the indoor heat exchanger is Z-shaped, with the first cross-flow fan blade located at the first bend of the indoor heat exchanger and the second cross-flow fan blade located at the second bend of the indoor heat exchanger.

[0022] Furthermore, when the air conditioner with top and bottom air outlets is in the top air outlet mode, the position of the second cross-flow fan blade is locked, the first top air outlet is closed, the second top air outlet is open, the first bottom air outlet and the second bottom air outlet are open, and the first cross-flow fan blade is rotating; when the air conditioner with top and bottom air outlets is in the bottom air outlet mode, the position of the first cross-flow fan blade is locked, the second bottom air outlet is closed, the first bottom air outlet is open, the first top air outlet and the second top air outlet are open, and the second cross-flow fan blade is rotating.

[0023] According to another aspect of the present invention, a control method for the above-described top-and-bottom air conditioner is provided, comprising:

[0024] Obtain the operating mode of the air conditioner;

[0025] When the air conditioner is in cooling mode, the first cross-flow fan blade is controlled to operate, the second cross-flow fan blade is stopped, the second air vent is controlled to open, and the air is controlled to be vented from the top of the air conditioner.

[0026] When the air conditioner is in heating mode, the second cross-flow fan blade is controlled to operate, the first cross-flow fan blade is stopped, the first downflow vent is controlled to open, and the air conditioner is controlled to vent downwards.

[0027] Furthermore, when the air conditioner is in cooling mode, the steps of controlling the first cross-flow fan blade to operate, the second cross-flow fan blade to stop, and the second upper air vent to open, and controlling the airflow from the air conditioner, include:

[0028] Get the air conditioner's fan speed mode;

[0029] When the air conditioner is set to high fan speed, the roller shutter of the lower air guide plate at the first downdraft opens the middle filter.

[0030] Control the upper air guide plate at the second air vent to flip and open the second air vent;

[0031] Control the operation of the first cross-flow fan blade;

[0032] Control the locking of the second cross-flow fan blades;

[0033] Control the opening of the second downwind vent, so that the airflow enters the first air duct from the second air duct and the second downwind vent, and blows out from the second upwind vent;

[0034] When the air conditioner is set to low fan speed, the roller shutter of the lower air guide plate at the first down air outlet blocks the middle filter.

[0035] Control the upper air guide plate at the second air vent to flip and open the second air vent;

[0036] Control the operation of the first cross-flow fan blade;

[0037] Control the opening of the second downwind vent, allowing airflow to enter the first air duct from the second downwind vent and then blow out from the second upwind vent.

[0038] Furthermore, when the air conditioner is in heating mode, controlling the second cross-flow fan blades to operate, stopping the first cross-flow fan blades, and controlling the first downflow vent to open, the steps of controlling the downflow air from the air conditioner include:

[0039] Get the air conditioner's fan speed mode;

[0040] When the air conditioner is set to high fan speed, the roller shutter of the upper air guide plate at the second air inlet opens the middle filter.

[0041] Control the lower air guide plate at the first downwind vent to flip and open the first downwind vent;

[0042] Control the operation of the second cross-flow fan blade;

[0043] Lock the first cross-flow fan blade;

[0044] Control the opening of the first upwind vent, so that the airflow enters the second airflow through the first air duct and the first upwind vent, and blows out from the first downwind vent;

[0045] When the air conditioner is at a low fan speed, the roller shutter of the upper air guide plate at the second air vent blocks the middle filter.

[0046] Control the lower air guide plate at the first downwind vent to flip and open the first downwind vent;

[0047] Control the operation of the first cross-flow fan blade;

[0048] Control the opening of the first upwind vent, allowing airflow to enter the second duct from the first upwind vent and exit from the first downwind vent.

[0049] According to the technical solution of this invention, the top-and-bottom air conditioner includes: a housing having a first upper air outlet, a first lower air outlet, a second upper air outlet, and a second lower air outlet; an indoor heat exchanger disposed within the housing, dividing the space within the housing into an upper space and a lower space; a first air duct disposed within the upper space and communicating with the second upper air outlet; a second air duct disposed within the lower space and communicating with the first lower air outlet; a first cross-flow fan blade disposed within the first air duct; and a second cross-flow fan blade disposed within the second air duct. Both the first upper air outlet and the first air duct can communicate with the second air duct, and both the second air duct and the second lower air outlet can communicate with the first air duct. By designing the structure where the first upper air outlet and the first air duct communicate with the second air duct, and the second air duct and the second lower air outlet communicate with the first air duct, the air conditioner, in cooling mode, can guide cold air through the first air duct and from the second upper air outlet to the entire upper space of the room via the first cross-flow fan blade, allowing the cold air to be evenly distributed from the top of the room to the lower space, achieving uniform cooling throughout the room and preventing cold air from blowing directly on people. In heating mode, the second cross-flow fan directs hot air through the second air duct from the first downspout to the lower space. This allows the hot air to be blown downwards from the first downspout at the bottom of the casing to the floor, then rises throughout the room, achieving a rising heating effect. This ensures the hot air is delivered close to the floor, enabling rapid heating and quickly raising the indoor temperature. The cooling and heating airflow are achieved through the first and second cross-flow fan blades. Compared to traditional centrifugal fan designs, cross-flow fan blades, under the same airflow conditions, reduce airflow vortices due to their axial airflow characteristics, effectively lowering operating noise. This is especially beneficial in spaces requiring a quiet environment, such as bedrooms, providing a quieter airflow experience. Attached Figure Description

[0050] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0051] Figure 1 This diagram illustrates the structure of an air conditioner with top and bottom air outlets in the off state according to an embodiment of the present invention.

[0052] Figure 2 This invention illustrates the structural diagrams of the various air vents of an air-conditioning unit with top and bottom air outlets according to an embodiment of the present invention.

[0053] Figure 3 This diagram illustrates the structure of an air conditioner with top and bottom air outlets in cooling top air outlet mode according to an embodiment of the present invention.

[0054] Figure 4 This diagram illustrates the structure of an air conditioner with top and bottom air outlets in heating mode according to an embodiment of the present invention.

[0055] Figure 5A schematic diagram of the upper air guide plate of an air conditioner with top and bottom air outlets according to an embodiment of the present invention is shown; and

[0056] Figure 6 A flowchart of the control method for an air conditioner with top and bottom air outlets according to an embodiment of the present invention is shown.

[0057] The above figures include the following reference numerals:

[0058] 1. First air duct; 2. Upper air guide plate; 3. First cross-flow fan blade; 4. Front water duct; 5. Lower filter screen; 6. Lower baffle; 7. Lower air guide plate; 8. Second air duct; 9. Second cross-flow fan blade; 10. Rear water duct; 11. Indoor heat exchanger; 12. Upper filter screen; 13. Upper baffle; 14. Roller; 15. Sliding track; 16. Elastic element; 17. Intermediate filter screen; 18. Roller shutter; 19. First upper air outlet; 20. Second upper air outlet; 21. First lower air outlet; 22. Second lower air outlet; 100. Housing. Detailed Implementation

[0059] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0060] like Figures 1 to 5 As shown, according to an embodiment of the present invention, the top and bottom air outlet air conditioner includes: a housing 100 having a first upper air outlet 19, a first lower air outlet 21, a second upper air outlet 20, and a second lower air outlet 22; an indoor heat exchanger 11 disposed within the housing 100, dividing the space within the housing 100 into an upper space and a lower space; a first air duct 1 disposed within the upper space and communicating with the second upper air outlet 20; a second air duct 8 disposed within the lower space and communicating with the first lower air outlet 21; a first cross-flow fan blade 3 disposed within the first air duct 1; a second cross-flow fan blade 9 disposed within the second air duct 8; both the first upper air outlet 19 and the first air duct 1 are communicatively connected to the second air duct 8, and both the second air duct 8 and the second lower air outlet 22 are communicatively connected to the first air duct 1.

[0061] By designing a structure that connects the first upper air vent 19 and the first air duct 1 to the second air duct 8, and the second air duct 8 and the second lower air vent 22 to the first air duct 1, the air conditioner, in cooling mode, can guide cold air through the first cross-flow fan blade 3 via the first air duct 1 from the second upper air vent 20 to the upper space of the entire room. This allows the cold air to be evenly distributed from the top of the room to the lower space, achieving uniform cooling throughout the room and preventing cold air from blowing directly on people. In heating mode, the second cross-flow fan blade 9 delivers hot air through the second air duct 8 from the first lower air vent 21 to the lower space. This allows the hot air to be blown downwards from the first lower air vent 21 at the bottom of the casing to the bottom of the room, and then rises to the entire room, achieving rising heating. This ensures that the hot air is delivered close to the ground, achieving rapid heating and quickly raising the indoor temperature.

[0062] The aforementioned air supply is achieved through cross-flow fan blades. Compared to traditional centrifugal fan blade designs, cross-flow fan blades, under the same airflow conditions, reduce airflow vortices due to their axial airflow characteristics, effectively reducing operating noise. This is especially beneficial when used in spaces requiring a quiet environment, such as bedrooms, providing a quieter air supply experience.

[0063] By controlling the operating status of the first cross-flow fan blade 3 and the second cross-flow fan blade 9, as well as the opening and closing of the first upper air outlet 19, the first lower air outlet 21, the second upper air outlet 20 and the second lower air outlet 22, the air conditioner can intelligently switch the air outlet mode in cooling and heating modes, providing multiple air supply modes such as non-direct cold air blowing, rapid hot air landing, and rapid cooling or heating, to meet different user needs and preferences.

[0064] The above technical solutions not only solve the problems of direct cold air blowing and the difficulty of hot air covering the whole room when heating, but also greatly improve the comfort and user satisfaction of air conditioners by reducing noise and improving the uniformity of air supply.

[0065] In one embodiment, an upper air guide plate 2 is provided at the second upper air outlet 20. The upper air guide plate 2 has an air guiding state in which the second upper air outlet 20 is opened to guide the outgoing air and a filtering state in which the second upper air outlet 20 is closed to filter the incoming air.

[0066] When in air-guiding mode, the upper air guide plate 2 can precisely adjust the air outlet angle according to the air conditioner's operating mode and user settings, effectively controlling the direction of cold air flow. In cooling mode, the upper air guide plate 2 can direct cold air to areas that avoid blowing directly onto people, achieving a more uniform and comfortable distribution of cold air.

[0067] In filtration mode, the upper air guide plate 2 acts as a filter screen for the air inlet. While increasing the air intake, it can effectively block dust, impurities, etc. from entering from the second upper air inlet 20, keep the indoor air clean, reduce dust accumulation inside the air conditioner, extend the service life of the equipment, and reduce the problem of reduced air volume and decreased efficiency caused by dust blockage.

[0068] By flexibly switching between air guiding and filtration states using the upper air guide plate 2, the state of the upper air guide plate 2 can be adjusted as needed to meet different working requirements. Different working modes can be switched, enabling the air conditioner to adjust the air supply mode according to actual needs while ensuring clean air, avoiding the phenomenon of direct cold air blowing, and greatly improving the energy efficiency of the air conditioner and the user's comfort experience.

[0069] In one embodiment, the upper air guide plate 2 includes a shielding part and a filtering part. The shielding part has a first position covering the filtering part and a second position allowing the filtering part to pass. When the upper air guide plate 2 is in the air guiding state, the shielding part is located in the first position, and when the upper air guide plate 2 is in the filtering state, the shielding part is located in the second position.

[0070] By combining the shielding and filtering sections, the upper air guide plate 2 can flexibly switch between cooling and heating modes. In the first position (air guiding mode), the shielding section covers the filter section, allowing the upper air guide plate 2 to act as a guide device, precisely controlling the direction of the airflow from the second upper air vent 20 and preventing cold air from blowing directly on the human body. In the second position (filtering mode), the shielding section allows the filter section to be exposed to the second upper air vent 20. At this time, the upper air guide plate 2 transforms into an air inlet filter, blocking dust and impurities from entering the air conditioner, keeping the air clean, and reducing dust accumulation on internal components, thereby improving heat exchange efficiency and extending equipment life.

[0071] The dynamic switching between the shielding and filtering sections allows the air conditioner to perform optimally in different operating modes. For example, in high-airflow cooling mode, the shielding section is in the first position, ensuring precise control of airflow direction and preventing discomfort caused by direct cold air blowing. In heating mode or when high-airflow cooling is required, the shielding section moves to the second position, and the filtering section engages, ensuring the cleanliness of the incoming air and preventing reduced airflow and decreased air conditioning efficiency due to dust blockage. The built-in filtration function of the filtering section reduces the frequency of users replacing or cleaning external filters, simplifying the maintenance process and lowering maintenance costs.

[0072] In one embodiment, the shielding part includes a roller blind 18, the upper air guide plate 2 also includes a sliding track 15 and a roller 14, the filtering part includes an intermediate filter screen 17, the roller blind 18 is slidably disposed in the sliding track 15, the first end of the roller blind 18 is wound on the roller 14, and the intermediate filter screen 17 is installed inside the sliding track 15.

[0073] The roller shutter 18 can slide flexibly within the sliding track 15, and its automatic opening and closing is achieved by a motor-driven roller 14. In the air-guiding state, the roller shutter 18 is in the first position, covering the intermediate filter 17 of the filter section, forming a complete air-guiding plate structure. This effectively controls the airflow direction of the second upper air vent 20, preventing cold air from blowing directly onto the user. The intermediate filter 17 is installed inside the sliding track 15. When the roller shutter 18 moves to the second position, the intermediate filter 17 is fully exposed to the second upper air vent 20. As an air inlet filter, it effectively filters dust and impurities from the air, keeping the air entering the air conditioner clean, reducing dust accumulation on internal components, and extending the equipment's lifespan and heat exchange efficiency. The automated operation of the roller shutter 18 not only simplifies the user's adjustment of the air conditioning's airflow mode but also automatically switches between filtration and air-guiding functions, eliminating the need for manual adjustment and making the air conditioning operation more convenient, thus improving the overall user experience.

[0074] The integrated design of the roller shutter 18 and the intermediate filter 17 avoids the space waste and structural complexity caused by the separation of the traditional air guide plate and filter, making the internal structure of the air conditioner more compact while maintaining high efficiency and versatility.

[0075] Since the intermediate filter screen 17 is directly installed inside the sliding track 15, when it is necessary to clean or replace the filter screen, users or maintenance personnel can directly contact and operate the intermediate filter screen 17 by simply operating the roller shutter 18, which greatly simplifies the maintenance process and reduces the difficulty and cost of maintenance.

[0076] In one embodiment, the roller blind 18 has two layers, with the intermediate filter 17 located between the two layers of roller blind 18.

[0077] The roller shutter 18 is designed with two layers and an intermediate filter 17 installed between them, which effectively enhances the filtration effect while ensuring the stability and durability of the air guide plate. It provides a multi-functional upper air guide plate system that can accurately control the airflow direction and efficiently filter the air, and also makes the structure of the roller shutter 18 more balanced.

[0078] In one embodiment, the roller 14 is disposed at the first end of the sliding track 15, the second end of the sliding track 15 is provided with an elastic element 16, and the second end of the roller blind 18 is connected to the elastic element 16.

[0079] The elastic element 16 provides a restoring force, ensuring that the roller blind 18 remains stretched when rolled up by the roller 14, facilitating its retraction. When the roller blind 18 needs to be unfolded, the restoring force of the elastic element 16 helps it quickly and smoothly follow the sliding track 15, achieving automatic unfolding. Simultaneously, the elastic element 16's tension keeps the blind stably in the unfolded state, preventing sagging or deformation due to gravity or wind, simplifying operation, and improving user experience. The elastic element 16 can be, for example, a tension spring or a coil spring.

[0080] In one embodiment, two traction ropes are connected to one end of the roller shutter 18 near the elastic element 16. The two traction ropes are connected to the elastic element 16 and are used to pull the roller shutter 18 back to its original position.

[0081] In one embodiment, a mounting bracket is provided at the end of the sliding track 15 away from the roller 14, and an elastic element 16 is provided on the mounting bracket.

[0082] In one embodiment, a lower air guide plate 7 is provided at the first downwind outlet 21. The structure and function of the lower air guide plate 7 are similar to those of the upper air guide plate 2, and will not be described in detail here.

[0083] In one embodiment, an upper baffle 13 is provided at the first upper air inlet 19, an upper air guide plate 2 is provided at the second upper air inlet 20, a lower air guide plate 7 is provided at the first lower air inlet 21, and a lower baffle 6 is provided at the second lower air inlet 22. In this embodiment, two air inlets are provided at the top and bottom respectively, which can increase the air volume while shortening the length of the baffle, thereby maximizing the air intake volume and avoiding the problem of the baffle extending too far out. This allows the air conditioner to maintain a compact structure and also avoids the problem of the baffle extending too far out and blocking the wind, ensuring the airflow effect.

[0084] This invention employs a dual cross-flow fan structure with top and bottom air outlets, increasing the required air intake volume. In the cooling top air outlet mode, to achieve a large air volume, the first lower air outlet 21 needs to be opened. The first lower air outlet 21 is the air outlet in the heating mode. In the heating mode, the first lower air outlet 21 cannot be blocked, so a conventional filter cannot be installed to filter dust. In the heating bottom air outlet mode, to achieve a large air volume, the second upper air outlet 20 needs to be opened. The second upper air outlet 20 is the air outlet in the cooling mode. In the cooling mode, the second upper air outlet 20 cannot be blocked, so a conventional filter cannot be installed to filter dust.

[0085] The air guide plate structure described in this application can be adjusted as needed, so that the air guide plate can achieve both good air guiding effect and dust filtering function, thus effectively solving the above problems.

[0086] In one embodiment, the indoor heat exchanger 11 is Z-shaped, with the first cross-flow fan blade 3 located at the first bend of the indoor heat exchanger 11 and the second cross-flow fan blade 9 located at the second bend of the indoor heat exchanger 11.

[0087] The Z-shaped heat exchanger design increases the contact area between the air and the heat exchanger, allowing the air to have a longer path to contact the cooling or heating medium as it passes through the heat exchanger, thereby improving heat exchange efficiency. The first cross-flow fan blade 3 and the second cross-flow fan blade 9 are located at the bends of the indoor heat exchanger, effectively guiding airflow and ensuring that air flows evenly across the entire surface of the heat exchanger, further enhancing the heat exchange effect. Simultaneously, the location of the first cross-flow fan blade 3 and the second cross-flow fan blade 9 at the bends of the heat exchanger fully utilizes the space formed by these bends, resulting in more efficient space utilization, a more compact air conditioner structure, and a smaller footprint. The Z-shaped design makes full use of the internal space of the air conditioner, allowing for a more compact layout of the heat exchanger and cross-flow fan blades, reducing the overall size of the air conditioner and helping to save installation space for users.

[0088] In one embodiment, when the air conditioner with top and bottom air outlets is in the top air outlet mode, the second cross-flow fan blade 9 is locked, the first upper air outlet 19 is closed, the second upper air outlet 20 is open, the first lower air outlet 21 and the second lower air outlet 22 are open, and the first cross-flow fan blade 3 is in operation; when the air conditioner with top and bottom air outlets is in the bottom air outlet mode, the first cross-flow fan blade 3 is locked, the second lower air outlet 22 is closed, the first lower air outlet 21 is open, the first upper air outlet 19 and the second upper air outlet 20 are open, and the second cross-flow fan blade 9 is in operation.

[0089] By precisely controlling the opening and closing of the air vents and the operation of the cross-flow fan blades, the top and bottom air outlet air conditioner can effectively prevent cold air from blowing directly on the human body in the top air outlet mode, while ensuring that hot air is evenly diffused along the ground in the bottom air outlet mode. This significantly improves the comfort and efficiency of the air conditioner and meets the needs of personalized air supply.

[0090] In one embodiment, the top-and-bottom air-conditioning unit further includes a front water channel 4 and a rear water channel 10. The front water channel 4 is located below the lowest point of the first end of the indoor heat exchanger 11 and is used to collect the condensate formed at the first end of the indoor heat exchanger 11. The rear water channel 10 is located below the lowest point of the second end of the indoor heat exchanger 11 and is used to collect the condensate formed at the second end of the indoor heat exchanger 11. By setting up the front water channel 4 and the rear water channel 10, the condensate generated by the indoor heat exchanger 11 can be conveniently collected and discharged in a timely manner through a pre-set drainage pipe, avoiding condensate dripping into the room and causing pollution to the indoor environment, thus improving the user experience.

[0091] See also Figure 6As shown in the embodiment of the present invention, the control method of the above-mentioned air conditioner with top and bottom air outlets includes: obtaining the operating mode of the air conditioner; when the air conditioner is in cooling mode, controlling the first cross-flow fan blade 3 to operate, the second cross-flow fan blade 9 to stop, controlling the second upper air outlet 20 to open, and controlling the air conditioner to outlet air from the top; when the air conditioner is in heating mode, controlling the second cross-flow fan blade 9 to operate, the first cross-flow fan blade 3 to stop, controlling the first lower air outlet 21 to open, and controlling the air conditioner to outlet air from the bottom.

[0092] In cooling mode, by controlling the operation of the first cross-flow fan blade 3 and opening the second upper air vent 20, cold air is prevented from blowing directly on the human body, providing a more comfortable cooling experience. In heating mode, by controlling the operation of the second cross-flow fan blade 9 and opening the first lower air vent 21, hot air is ensured to diffuse close to the ground, causing hot air to rise and form evaporative heating, which improves heating efficiency and comfort.

[0093] This control method ensures that in cooling mode, cool air is efficiently delivered through the upper vent, while in heating mode, hot air is evenly distributed through the lower vent. This strategic airflow optimizes the air conditioner's heat exchange performance, accelerates indoor temperature regulation, and improves energy efficiency. Compared to centrifugal fan blades, cross-flow fan blades generate less noise during operation. By selectively activating the cross-flow fan blades in different modes, the noise level of the air conditioner can be significantly reduced while maintaining good airflow performance.

[0094] In one embodiment, when the air conditioner is in cooling mode, controlling the first cross-flow fan blade 3 to operate, the second cross-flow fan blade 9 to stop, and controlling the second upper air vent 20 to open, the steps of controlling the air outlet of the air conditioner include:

[0095] Get the air conditioner's fan speed mode;

[0096] When the air conditioner is at high fan speed, the roller shutter 18 of the lower air guide plate 7 at the first lower air outlet 21 opens the intermediate filter screen 17.

[0097] Control the upper air guide plate 2 at the second air vent 20 to flip and open the second air vent 20;

[0098] Control the operation of the first cross-flow fan blade 3;

[0099] Control the second cross-flow fan blade 9 to lock;

[0100] Control the opening of the second downwind vent 22 so that the airflow enters the first air duct 1 from the second air duct 8 and the second downwind vent 22, and is blown out from the second upwind vent 20;

[0101] When the air conditioner is at a low fan speed, the roller shutter 18 of the lower air guide plate 7 at the first lower air outlet 21 blocks the middle filter screen 17.

[0102] Control the upper air guide plate 2 at the second air vent 20 to flip and open the second air vent 20;

[0103] Control the operation of the first cross-flow fan blade 3;

[0104] Control the opening of the second downwind vent 22 so that the airflow enters the first air duct 1 from the second downwind vent 22 and is blown out from the second upwind vent 20.

[0105] See also Figure 3 As shown, in cooling mode with high airflow, the upper air guide plate 2 and the lower baffle 6 are opened to the specified positions. Figure 3 At the indicated location, the roller shutter 18 of the lower air guide plate 7 is open, the second cross-flow fan blade 9 is locked to prevent its rotation from affecting air pressure, and the first cross-flow fan blade 3 is activated. Air is drawn in through the first downflow inlet 21 and the second downflow inlet 22, and after heat exchange in the indoor heat exchanger 11, it is blown out from the top through the first cross-flow fan blade 3 via the first air duct 1 and the upper air guide plate 2, achieving the function of preventing direct airflow of cold air. This mode is suitable for environments requiring large air volume and rapid cooling. When the air conditioner is running in low airflow cooling mode, in the above operating mode, the roller shutter 18 of the lower air guide plate 7 is closed, i.e., air is not drawn in through the first downflow inlet 21, and the cooling mode is activated. The default air conditioning cooling mode is low airflow mode.

[0106] In one embodiment, when the air conditioner is in heating mode, controlling the second cross-flow fan blade 9 to operate, the first cross-flow fan blade 3 to stop, and controlling the first downflow vent 21 to open, the steps of controlling the downflow air of the air conditioner include:

[0107] Get the air conditioner's fan speed mode;

[0108] When the air conditioner is at high fan speed, the roller shutter 18 of the upper air guide plate 2 at the second air vent 20 opens the middle filter screen 17.

[0109] Control the lower air guide plate 7 at the first downwind vent 21 to flip and open the first downwind vent 21;

[0110] Control the operation of the second cross-flow fan blade 9;

[0111] Lock the first cross-flow fan blade 3;

[0112] Control the opening of the first upwind vent 19 to allow airflow to enter the second air duct 8 from the first air duct 1 and the first upwind vent 19, and blow it out from the first downwind vent 21;

[0113] When the air conditioner is at a low fan speed, the roller shutter 18 of the upper air guide plate 2 at the second air vent 20 blocks the middle filter screen 17.

[0114] Control the lower air guide plate 7 at the first downwind vent 21 to flip and open the first downwind vent 21;

[0115] Control the operation of the first cross-flow fan blade 3;

[0116] Control the opening of the first upwind vent 19 so that the airflow enters the second air duct 8 from the first upwind vent 19 and is blown out from the first downwind vent 21.

[0117] Reference Appendix Figure 4 In heating mode at high fan speed, the upper baffle 13 and lower air guide plate 7 open to the desired position. Figure 4 At the indicated location, the roller shutter 18 of the upper air guide plate 2 is open, the first cross-flow fan blade 3 is locked to prevent its rotation from affecting air pressure, and the second cross-flow fan blade 9 is activated. Air is drawn in through the first upper air inlet 19 and the second upper air inlet 20, and after heat exchange in the indoor heat exchanger 11, it is blown out from the bottom through the second air duct 8 and the lower air guide plate 7 by the second cross-flow fan blade 9, achieving a carpet-like coverage of hot air. This mode is suitable for environments requiring large air volume and rapid heating. When in low-airflow operation mode for heating, under the above operating mode, the roller shutter 18 of the upper air guide plate 2 is closed, i.e., air is not drawn in through the first upper air inlet 19, and the cooling mode is activated. The default air conditioning heating mode is low-airflow mode.

[0118] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0119] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0120] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A top-and-bottom air outlet air conditioner, characterized in that, include: The housing (100) has a first upwind opening (19), a first downwind opening (21), a second upwind opening (20), and a second downwind opening (22); An indoor heat exchanger (11) is disposed inside the housing (100) and divides the space inside the housing (100) into an upper space and a lower space; The first air duct (1) is set in the upper space and is connected to the second upper air outlet (20); The second air duct (8) is located in the lower space and is connected to the first downwind outlet (21); The first cross-flow fan blade (3) is installed inside the first air duct (1); The second cross-flow fan blade (9) is installed inside the second air duct (8); The first upwind opening (19) and the first air duct (1) can both be connected to the second air duct (8), and the second air duct (8) and the second downwind opening (22) can both be connected to the first air duct (1); An upper air guide plate (2) is provided at the second upper air outlet (20). The upper air guide plate (2) has an air guiding state in which the second upper air outlet (20) is opened to guide the outgoing air and a filtering state in which the second upper air outlet (20) is closed to filter the incoming air. The upper air guide plate (2) includes a shielding part and a filtering part. The shielding part has a first position covering the filtering part and a second position allowing the filtering part to pass. When the upper air guide plate (2) is in the air guiding state, the shielding part is located in the first position. When the upper air guide plate (2) is in the filtering state, the shielding part is located in the second position. The shielding part includes a roller shutter (18), the upper air guide plate (2) also includes a sliding track (15) and a roller (14), the filtering part includes an intermediate filter screen (17), the roller shutter (18) is slidably disposed in the sliding track (15), the first end of the roller shutter (18) is wound on the roller (14), and the intermediate filter screen (17) is installed inside the sliding track (15).

2. The air conditioner with top and bottom air outlets according to claim 1, characterized in that, The roller shutter (18) has two layers, and the intermediate filter (17) is located between the two layers of the roller shutter (18).

3. The air conditioner with top and bottom air outlets according to claim 1, characterized in that, The roller (14) is disposed at the first end of the sliding track (15), and the second end of the sliding track (15) is provided with an elastic element (16). The second end of the roller blind (18) is connected to the elastic element (16).

4. The top-and-bottom air-discharge air conditioner according to any one of claims 1 to 3, characterized in that, A lower air guide plate (7) is provided at the first downwind outlet (21).

5. The top-and-bottom air-discharge air conditioner according to any one of claims 1 to 3, characterized in that, The indoor heat exchanger (11) is Z-shaped, with the first cross-flow fan (3) located at the first bend of the indoor heat exchanger (11) and the second cross-flow fan (9) located at the second bend of the indoor heat exchanger (11).

6. The top-and-bottom air-discharge air conditioner according to any one of claims 1 to 3, characterized in that, When the air conditioner with top and bottom air outlets is in the top air outlet mode, the position of the second cross-flow fan blade (9) is locked, the first upper air outlet (19) is closed, the second upper air outlet (20) is open, the first lower air outlet (21) and the second lower air outlet (22) are open, and the first cross-flow fan blade (3) is running; when the air conditioner with top and bottom air outlets is in the bottom air outlet mode, the position of the first cross-flow fan blade (3) is locked, the second lower air outlet (22) is closed, the first lower air outlet (21) is open, the first upper air outlet (19) and the second upper air outlet (20) are open, and the second cross-flow fan blade (9) is running.

7. A control method for a top-and-bottom air-conditioning unit as described in any one of claims 1 to 6, characterized in that, include: Obtain the operating mode of the air conditioner; When the air conditioner is in cooling mode, control the first cross-flow fan blade (3) to operate, the second cross-flow fan blade (9) to stop, control the second upper air outlet (20) to open, and control the air outlet of the air conditioner to be vented. When the air conditioner is in heating mode, the second cross-flow fan blade (9) is controlled to operate, the first cross-flow fan blade (3) is stopped, the first downflow vent (21) is controlled to open, and the air conditioner is controlled to vent downwards.

8. The control method according to claim 7, characterized in that, When the air conditioner is in cooling mode, the steps of controlling the first cross-flow fan blade (3) to operate, the second cross-flow fan blade (9) to stop, and the second upper air vent (20) to open, and controlling the air outlet of the air conditioner include: Get the air conditioner's fan speed mode; When the air conditioner is at high speed, the roller shutter (18) of the lower air guide plate (7) at the first downflow outlet (21) is controlled to open the intermediate filter screen (17). Control the upper air guide plate (2) at the second upper air outlet (20) to flip and open the second upper air outlet (20); Control the operation of the first cross-flow fan blade (3); Lock the second cross-flow fan blade (9); Control the opening of the second downwind vent (22) so that the airflow enters the first air duct (1) from the second air duct (8) and the second downwind vent (22) and blows out from the second upwind vent (20); When the air conditioner is at a low fan speed, the roller shutter (18) of the lower air guide plate (7) at the first downwind vent (21) is controlled to block the intermediate filter screen (17). Control the upper air guide plate (2) at the second upper air outlet (20) to flip and open the second upper air outlet (20); Control the operation of the first cross-flow fan blade (3); Control the opening of the second downwind vent (22) so that the airflow enters the first air duct (1) from the second downwind vent (22) and blows out from the second upwind vent (20).

9. The control method according to claim 7, characterized in that, When the air conditioner is in heating mode, the steps of controlling the second cross-flow fan blade (9) to operate, the first cross-flow fan blade (3) to stop, and the first downflow vent (21) to open, and controlling the downflow of the air conditioner include: Get the air conditioner's fan speed mode; When the air conditioner is at high speed, the roller shutter (18) of the upper air guide plate (2) at the second air inlet (20) is controlled to open the intermediate filter screen (17). Control the lower air guide plate (7) at the first downwind opening (21) to flip and open the first downwind opening (21); Control the operation of the second cross-flow fan blade (9); Control the locking of the first cross-flow fan blade (3); Control the opening of the first upwind opening (19) so that the airflow enters the second airflow channel (8) from the first airflow channel (1) and the first upwind opening (19) and blows out from the first downwind opening (21); When the air conditioner is at a low wind speed, the roller shutter (18) of the upper air guide plate (2) at the second upper air outlet (20) is controlled to block the middle filter screen (17). Control the lower air guide plate (7) at the first downwind opening (21) to flip and open the first downwind opening (21); Control the operation of the first cross-flow fan blade (3); Control the opening of the first upwind vent (19) so that the airflow enters the second air duct (8) from the first upwind vent (19) and blows out from the first downwind vent (21).

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