Ceiling-mounted air conditioner, kitchen air system and control method

Abstract

The present invention relates to a ceiling-mounted air conditioner, a kitchen air system and a control method. By providing an air supply outlet formed with a downward airflow, an air duct communicating with the air supply outlet, a blower and an evaporative heat exchanger are arranged in the air duct, and the speed of the vertical component of the downward airflow is greater than 0.5 m / s, so as to realize local delivery of cold air to cool a user area, especially with an obvious cooling effect on the user's head, so that the user can locally feel cool in the hot cooking environment, thereby improving the user's comfort.

Description

Technical Field

[0001] The present invention relates to a ceiling air conditioner, a kitchen air system and a control method, belonging to the technical field of air conditioners. Background Art

[0002] In the existing ceiling air conditioner, the air outlets are generally arranged around the panel of the air conditioner, that is, air outlets are provided on all four sides of the panel, and air deflector plates are arranged at the air outlets. When the ceiling air conditioner is working, the air outlets on the four sides of the panel all send air outward. The four-way air supply method disperses the air supply intensity and cannot concentrate on a certain area for air supply. Therefore, in some application scenarios, such as when installed in a kitchen, since the cooking equipment in the kitchen continuously generates heat, the overall temperature of the kitchen is relatively high, and it is difficult to cool the entire kitchen as a result. When the user is cooking, the area where the user is located is relatively close to the cooking equipment such as the cooker, and the high temperature formed by the heat felt is obvious. However, the existing ceiling air conditioner with four-way air supply is difficult to cool the area where the user is located, so it cannot meet the user's needs. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to solve the problem that it is difficult for the existing ceiling air conditioner to better meet the cooling requirement of the area where the user is located.

[0004] Specifically, the present invention discloses a ceiling air conditioner, including a mounting plate provided with a compressor, and an evaporative heat exchanger is further provided on the mounting plate. The evaporative heat exchanger is communicated with the suction port of the compressor. It further includes an air outlet forming a downward air flow, and an air duct communicating with the air outlet. An air supply fan and an evaporative heat exchanger are arranged in the air duct, and the speed of the vertical component of the downward air flow is greater than 0.5 m / s.

[0005] Optionally, the fan is arranged between the air outlet and the evaporative heat exchanger. The air outlet end of the air outlet is located below the mounting plate. When the air supply fan operates, it sucks air from the side of the evaporative heat exchanger. The air supply fan is a centrifugal fan, and the air it throws out is discharged from the air outlet, forming a downward air flow with the speed of the vertical component greater than 0.95 m / s.

[0006] Optionally, the air duct is communicated with an air inlet, and the air inlet is arranged far away from the air outlet; the air duct includes a flexible air duct, one end of the flexible air duct is communicated with the air inlet, and the other end is communicated with the cavity where the evaporative heat exchanger is located; the distance between the air inlet and the air outlet is not less than 1.2 m, and the flexible air duct can be stretched to a length not less than 1.0 m.

[0007] Optionally, the air outlet includes a side with high wind speed and a side with low wind speed, and is divided into two or more air blowing outlets. Near the air blowing outlet, a wind guiding structure is provided for adjusting the air volume and air direction; the wind guiding structure is arranged at the air blowing outlet through a rotating shaft.

[0008] The present invention discloses a kitchen air system, including a ceiling-mounted air conditioner according to any one of claims 1 to 4, characterized in that: a positive pressure area is formed at the air supply outlet, and there is also an oil fume exhaust device including an exhaust fan, and the exhaust fan forms a first negative pressure area, and the positive pressure area is communicated with the first negative pressure area.

[0009] Optionally, the air supply outlet is located above the first negative pressure area, and the air flow discharged from the air supply outlet enters the first negative pressure area and is discharged to the building air duct through the exhaust fan of the oil fume exhaust device; the air outlet is the side with high wind speed close to the first negative pressure area; or the air outlet is the side with low wind speed close to the first negative pressure area; or the side with high wind speed and the side with low wind speed of the air outlet are arranged in parallel with the first negative pressure area.

[0010] Optionally, the first negative pressure area of the oil fume exhaust device includes a smoke inlet, and an oil accumulation part is arranged at the smoke inlet for collecting the condensed oil on the wall surface of the smoke inlet; a cooking device is arranged under the oil fume exhaust device, and the cooking device generates oil fume-containing flue gas, and the oil fume-containing flue gas is mixed with the air flow discharged from the air supply outlet and is discharged to the building air duct by the exhaust fan.

[0011] Optionally, an air inlet forms a second negative pressure area, and the second negative pressure area is far from the first negative pressure area, and the distance between the two is not less than 1.5 meters, and the positive pressure area is between the first negative pressure area and the second negative pressure area; the distance between the positive pressure area and the first negative pressure area is less than the distance between the positive pressure area and the second negative pressure area.

[0012] The present invention also provides a control method, which is applied to the above-mentioned ceiling-mounted air conditioner, and an oil fume exhaust device such as a range hood is also installed in the room where the air conditioner is located. The control method includes:

[0013] Obtain the operating wind speed of the oil fume exhaust device;

[0014] Adjust the working state of the air conditioner according to the operating wind speed of the range hood, where the working state includes one of the on-off state and the rotation speed of the blower of the air conditioner.

[0015] Optionally, the control method further includes:

[0016] Obtain the firepower of the cooking device in the room where the air conditioner is located;

[0017] Adjust the set temperature and / or operating frequency of the air conditioner according to the firepower.

[0018] The ceiling-mounted air conditioner of the present invention is provided with an air supply outlet that forms a downward air flow, and an air duct that communicates with the air supply outlet. A blower and an evaporative heat exchanger are arranged in the air duct. The speed of the vertical component of the downward air flow is greater than 0.5 m / s, so as to realize local delivery of cold air to cool the user's area, especially with an obvious cooling effect on the user's head, so that the user can locally feel cool in the hot cooking environment, thereby improving the user's comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Is a perspective view of the ceiling-mounted air conditioner according to an embodiment of the present invention;

[0020] Figure 2 Is a perspective view of the ceiling-mounted air conditioner according to an embodiment of the present invention after removing the housing;

[0021] Figure 3 Is a top view of the ceiling-mounted air conditioner according to an embodiment of the present invention after removing the housing;

[0022] Figure 4 Is Figure 3 A cross-sectional view of;

[0023] Figure 5 Is a perspective view of the ceiling-mounted air conditioner according to an embodiment of the present invention when installed in a kitchen;

[0024] Figure 6 Is Figure 5 A perspective view in another direction;

[0025] Figure 7 Is Figure 5 A perspective view in another direction;

[0026] Figure 8 Is Figure 5 A bottom view of;

[0027] Figure 9 Is Figure 8 A cross-sectional view of;

[0028] Figure 10 Is a bottom view of the ceiling-mounted air conditioner and the range hood when the ceiling-mounted air conditioner according to an embodiment of the present invention is installed in a kitchen;

[0029] Figure 11 Is a perspective view of another embodiment of the ceiling-mounted air conditioner according to an embodiment of the present invention when installed in a kitchen;

[0030] Figure 12 Is Figure 4 A partial enlarged view of;

[0031] Figure 13 Is a partial exploded view of the ceiling-mounted air conditioner according to an embodiment of the present invention;

[0032] Figure 14 Another partial exploded view of the ceiling-mounted air conditioner according to an embodiment of the present invention;

[0033] Figure 15 is Figure 14 a view in another direction of

[0034] Figure 16 An exploded view of the lighting assembly of the ceiling-mounted air conditioner according to an embodiment of the present invention;

[0035] Figure 17 Another exploded view of the lighting assembly of the ceiling-mounted air conditioner according to an embodiment of the present invention in another direction.

[0036] Reference numerals:

[0037] Ceiling-mounted air conditioner 10, main body 100, air outlet 101, air supply outlet 102, mounting plate 103, air guide vane 104, light-transmitting cover 105, evaporator air inlet 106, condensation heat exchanger 108, compressor 109, evaporation heat exchanger 110, boss 111, second light-emitting plate 120, second PCB board 121, second light-emitting body 122, lighting assembly 130, first light-emitting plate 131, first PCB board 131a, first light-emitting body 131b, cover body 132, step top 132a, step bottom 132b, cover body bottom edge 132c, outer vertical edge 132d, inner vertical edge 132e, water distributor 141, water pump 142, water guiding rib 146, air supply fan 152, refrigerant pipe 153, air inlet 161, flexible air duct 162, exhaust air duct 163, air blowing outlet 164, condensation heat exchanger air inlet 171, hot air exhaust valve 172, range hood 20, smoke inlet 201, smoke collecting hood 202, smoke exhaust duct 203, building air duct 30, ceiling 40, tee 50. Detailed implementation manners

[0038] It should be noted that, without conflict in structure or function, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to examples.

[0039] The present invention provides a ceiling-mounted air conditioner. The ceiling is arranged at the top of a room. The ceiling-mounted air conditioner refers to an air conditioner arranged within the area of the ceiling. It can be installed above the ceiling, and only the air outlet blows air downward out of the ceiling area; or it can be arranged below the ceiling, or partially below the ceiling, which is convenient for air supply and can also be installed in the case where the space above the ceiling is limited. As Figures 1 to 4As shown in the figure, the ceiling-mounted air conditioner 10 includes a main body 100. The main body 100 includes a mounting plate 103. A compressor 109 and an evaporative heat exchanger 110 are provided on the mounting plate 103. The evaporative heat exchanger 110 is communicated with the suction port of the compressor 109. It also includes an air supply outlet 102 that forms a downward airflow, and an air duct communicating with the air supply outlet 102. An air supply fan 152 and an evaporative heat exchanger 110 are provided in the air duct. The speed of the downward airflow in the vertical direction is greater than 0.5 m / s. Fixing parts are provided at the surrounding positions of the ceiling-mounted air conditioner 10. The fixing plate is connected to a pull rod to connect the ceiling-mounted air conditioner 10 to the roof or the truss in a hoisting manner. The air supply outlet 102 is provided on the mounting plate 103. When the air supply fan 152 operates, an airflow is generated to exchange heat through the evaporator to form a cold air flow, which is discharged downward through the air duct to the air supply outlet 102 on the mounting plate 103 to form a high-speed airflow, thereby cooling the air supply area. To quickly transport cold air downward from the air supply outlet 102 for refrigeration, it can meet the urgent cooling needs of users in a small area. For example, when the ceiling-mounted air conditioner 10 is installed in the kitchen, its air supply area is arranged near the range hood. When the user is cooking and is directly below the air supply outlet 102, local transportation of cold air for refrigeration of the user's area can be realized, especially the refrigeration effect on the user's head is obvious, so that the user can locally feel cool in the hot cooking environment, thereby improving the user's comfort. For the convenience of description, the ceiling-mounted air conditioner 10 is simply referred to as the air conditioner in the following embodiments.

[0040] In some embodiments of the present invention, the air supply fan 152 is disposed between the air supply port 102 and the evaporation heat exchanger 110. The air outlet end of the air supply port 102 is located below the mounting plate 103, and a suction area is formed between the evaporation heat exchanger 110 and the air supply port 102. When the air supply fan 152 operates, it sucks air from the side of the evaporation heat exchanger 110. The air supply fan 152 is a centrifugal fan, which throws out air and discharges it from the air supply port 102, forming a downward airflow with a vertical component speed greater than 0.95 m / s. By disposing the air supply fan 152 between the air supply port 102 and the evaporation heat exchanger 110, when the air supply fan 152 operates, it sucks air from the side of the evaporation heat exchanger 110, that is, the air first passes through the evaporation heat exchanger 110 and then is sent out by the impeller of the air supply fan 152 and then discharged through the air supply port 102. The existing setting method of the air supply fan 152 is to place the air supply fan 152 outside the air supply port 102 and the evaporation heat exchanger, that is, when the air supply fan 152 operates, the air supply fan 152 blows air on the evaporation heat exchanger 110, and the blown air passes through the evaporation heat exchanger 110 and is discharged through the air supply port 102. It has been proved by experiments that the method of the air supply fan 152 sucking air from the side of the evaporation heat exchanger 110 has a lower air resistance than blowing air on the evaporation heat exchanger 110 by the air supply fan 152. Therefore, the air volume passing through the evaporator is larger, thereby improving the heat exchange efficiency of the evaporation heat exchanger 110 and further increasing the cooling capacity. Moreover, by further setting the air supply fan 152 as a centrifugal fan, compared with the cross-flow fan used as the air supply fan 152 on the evaporator side in the existing air conditioner, its air volume is larger. Since the suction method is adopted to form a suction area between the evaporation heat exchanger 110 and the air supply port 102, it is beneficial to increase the air intake volume.

[0041] In some embodiments of the present invention, as Figures 1 to 7 shown, the air duct communicating with the evaporation heat exchanger 110 and the air supply fan 152 communicates with the air inlet 161 of the air conditioner, and the air inlet 161 is disposed far from the air supply port 102. As Figure 6As shown in the figure, when the air conditioner is installed, its main body 100 is installed above the ceiling 40, and the lower surface of its main body 100 can be flush with the lower surface of the ceiling 40, so as to form an integral whole with the ceiling 40 in appearance. The air outlet 102 of the air conditioner blows air downward. At this time, due to the isolation of the ceiling 40, the air inlet and air supply of the air conditioner are isolated at a long distance in terms of the air path connection distance between the two. At this time, even if the air inlet 161 is arranged on the main body of the air conditioner and close to the evaporation heat exchanger 110, such as the air inlet 161 is directly the evaporator air inlet 106 on the main body 100, the air discharged from the air outlet 102 of the air conditioner is sent downward to the downward area. At this time, most of the cold air diffuses to the surrounding of the room after heat exchange with the area where the air outlet 102 faces downward, and finally enters above the ceiling 40 through the installation gap between the ceiling 40 and the wall and then enters the air inlet 161 of the air conditioner. As a result, the path of the air from the air outlet 102 of the air conditioner to the air inlet 161 is greatly increased, thus realizing the arrangement that the air inlet 161 is far from the air outlet 102, and avoiding the reduction of the refrigeration efficiency caused by the air from the air outlet 102 directly entering the air inlet 161 without cooling the area of the room due to the two being too close.

[0042] Furthermore, as Figures 1 to 6 shown, the air duct includes a flexible air duct, one end of the flexible air duct is connected to the air inlet 161, and the other end is connected to the cavity where the evaporation heat exchanger 110 is located. Specifically, as Figure 5 shown, one end of the flexible air duct 162 far from the air conditioner main body forms the air inlet 161, so that the position of the air inlet 161 of the air conditioner is far from the air outlet 102 in the physical position through the flexible air duct 162, and better avoids the interference between the air inlet 161 and the air outlet 102. Through experiments, it is determined that the distance between the air inlet 161 and the air outlet 102 is not less than 1.2 meters, and the flexible air duct 162 is selected to have a telescopic structure to adapt to different installation environments, and it can be stretched to a length of not less than 1.0 meter, and can be stretched to 1.1 meters, 1.5 meters, 2.1 meters, 3.6 meters, 4.5 meters. When it adopts a longer stretching length, it can better ensure that when the air inlet 161 is arranged far from the air outlet 102, it has a farther distance, so as to avoid the interference on the air paths of the two.

[0043] In some embodiments of the present invention, as Figures 1 to 8 shown, the air outlet 102 is divided into two or more air blowing outlets 164. Specifically, as Figure 4 and Figure 7As shown in the figure, there are three air outlets 164. Three cylindrical walls are provided on the bottom plate to form the three air outlets 164. The three air outlets 164 are arranged in a straight line. The vertical downward projection of the impeller of the centrifugal air supply fan 152 is located in the area where the three air outlets 164 are located. Due to the air supply characteristics of the centrifugal fan, the air supply intensity is uneven, resulting in a low air speed at the air outlet 164 far from the tangent direction of the impeller rotation direction and a high air speed at the air outlet 164 close to the tangent direction. Near the air outlet 164, a wind guiding structure is also provided for adjusting the air volume and air direction. The specific wind guiding structure consists of a wind guiding vane 104 and a rotating shaft. The rotating shaft is installed on the cylindrical wall surface, and the wind guiding vane 104 is adapted to the cylindrical wall surface. Thus, when the wind guiding vane 104 is in different rotating positions through the rotating shaft, the wind guiding vane 104 blocks the size of the cylindrical air duct, realizing the adjustment of the air volume passing through the air outlet 164, and realizing the adjustment of the air direction through the guiding action of the wind guiding vane 104.

[0044] The present invention also proposes a kitchen air system, which includes the ceiling-mounted air conditioner 10 (hereinafter referred to as the air conditioner) proposed in the above embodiment. A positive pressure area is formed at its air outlet, and an oil fume exhaust device including an exhaust fan is also included. The exhaust fan forms a first negative pressure area, and the positive pressure area is communicated with the first negative pressure area. Here, the positive pressure area is the air supply area formed by the air outlet of the air conditioner and is formed due to continuous air supply. Since the positive pressure area is communicated with the first negative pressure area, part of the air in the positive pressure area will enter the negative pressure area and thus be sucked away by the exhaust fan.

[0045] As Figures 5 to 11 shown in the figure, the oil fume exhaust device is the range hood 20 in the figure. Of course, it can also be other oil fume exhaust devices such as exhaust fans. The range hood 20 includes a smoke collecting hood 202. The lower opening of the smoke collecting hood forms an air inlet 201. An exhaust fan (not shown in the figure) is provided in the smoke collecting hood 202. The other end of the smoke collecting hood 202 of the range hood 20 is connected to an exhaust air duct 203. The exhaust air duct 203 can pass through the ceiling 40, and the other end of it opens through the wall of the room and enters the building air duct 30. Thus, when the range hood works, the oil fume-containing gas inhaled from the air inlet 201 passes through the smoke collecting hood 202 and then enters the exhaust air duct 203 and is finally discharged into the building air duct 30 and discharged to the outside through the building air duct 30; or in other implementation manners, the other end of the exhaust air duct 203 can also be directly connected to the wall of the room such as the reserved smoke exhaust hole in the kitchen, so as to directly discharge the oil fume-containing gas into the building air duct 30 and discharge it to the outside. The downward air supply area formed by the air outlet 102 of the air conditioner is close to the area where the range hood 20 is located. Thus, when the user is cooking in the kitchen, the position where the user is located is in the air supply area, so that the air conditioner can convey cold air to the area where the user is located, making the user feel cool and reducing the heat brought by the high temperature generated during cooking. Specifically, as Figure 9As shown by the dotted line in the figure, when the air conditioner blows air downward, the relatively high-speed air flow discharged by it will form a positive pressure area OUT with a slightly higher air pressure than the surrounding area in the downward air supply area. When the exhaust fan of the range hood 20 works, the continuous air suction effect generated by it makes the air pressure of the air flow formed near the air inlet 201 of the exhaust fan slightly lower than the surrounding area, forming a first negative pressure area IN1. Since the air outlet 102 of the air conditioner blows air downward towards the area where the user is located, the positive pressure area and the first negative pressure area are connected, which helps the air in the positive pressure area to flow into the first negative pressure area. Specifically, the downward air supply from the air outlet 102 of the air conditioner forms an air curtain effect. The relatively high-speed air flow blows down from the user's head, first cooling the user's head area, so that the user experiences coolness. After these low-temperature air flows exchange heat and rise in the area where the user is located, a part of them is discharged to the peripheral area. Since the installation position of the range hood 20 is lower than the ceiling 40 where the air conditioner is installed, and the air inlet 201 of the range hood faces downward and is further close to the cooking appliance (not shown in the figure), the vertical distance between the position of the air inlet 201 and the position of the air outlet 102 of the air conditioner is relatively far. Therefore, the air flow near the air outlet 102 in the positive pressure area will not directly enter the air inlet 201, but is first discharged downward to the position above and below the user's head. After cooling the area where the user's head is located first, the temperature of the air flow rises relative to the air flow temperature of the air outlet 102, and then a part of it enters the air inlet 201 to achieve the connection between the two. After the positive pressure area and the first negative pressure area are connected, the air flow in the positive pressure area and the first negative pressure area will produce an accelerating air flow effect compared with the single positive pressure area or the single negative pressure area, accelerating the air flow discharged from the air outlet 102 to the user area, and at the same time accelerating the air flow entering the air inlet 201. Therefore, while improving the refrigeration effect on the user, it also increases the air flow entering the air inlet 201 and improves the smoking effect of the range hood. The main escaped oil fumes of the range hood are discharged from the upper part. Due to the air curtain effect at the air outlet 102 of the air conditioner, it will block the oil fume-containing gas generated in the cooking appliance heated by the user's cooktop, reducing the diffusion of the oil fume gas to the surrounding areas. And since the positive pressure area and the first negative pressure area are relatively close, the air flow in the positive pressure area plays a role in "driving" the oil fume-containing gas in the first negative pressure area, making more oil fumes enter the air inlet 201, and further enhancing the smoking effect of the range hood 20. Therefore, through the positive pressure area formed by the downward air outlet 102 of the air conditioner and the first negative pressure area formed by the air inlet 201 of the range hood 20, and the heights of these two areas are different, the refrigeration effect on the user is strengthened while the smoking effect of the range hood 20 is enhanced.

[0046] Preferably, the air outlet 102 is located above the first negative pressure area, and the air flow discharged from the air outlet 102 enters the first negative pressure area and is discharged to the building air duct 30 through the exhaust fan of the range hood 20. AsFigures 6 to 9 As shown, the position of the air supply outlet 102 of the air conditioner of the range hood 20 is located on the ceiling 40, and its position is higher than the smoke inlet 201 of the range hood. Therefore, the position of the air supply outlet 102 is higher than the first negative pressure area where the smoke inlet 201 is located. Since the position of a person's head is generally not lower than the height of the opening of the smoke collecting hood of the range hood, that is, not lower than the height of the smoke inlet 201. Therefore, when a person is in the positive pressure area, the cold air discharged from the air supply outlet 102 will at least reach the area where the person's head is located to cool it, so that the user experiences cool comfort. Then a part of it enters the first negative pressure area where the smoke inlet 201 is located, and then is discharged into the building air duct 30 through the exhaust fan via the exhaust air duct 203. Since the exhaust fan inhales a part of the cold air from the smoke inlet 201 and discharges it into the building air duct 30, the temperature of the mixed gas of oil fume in the building air duct 30 is reduced, so that the condensation of the oil-containing components in the mixed gas in the building air duct 30 can be accelerated, and more oil-containing components are condensed in the building air duct 30, so that the oil content of the flue gas finally discharged outdoors is reduced, and the pollution to the surrounding environment is reduced.

[0047] In some embodiments of the present invention, according to the installation orientation of the air conditioner, the position of its air supply outlet 102 relative to the first negative pressure area will also change. The air supply outlet 102 of the air conditioner has three air blowing outlets 164 arranged in a straight line, and the wind speeds of these three air blowing outlets 164 are different. If the straight line formed by these three air blowing outlets 164 is not parallel to the wall surface of the smoke collecting hood 202 of the range hood relative to the user, then a gradient air supply wind speed will be formed with one air blowing outlet 164 close to the range hood 20, that is, close to the first negative pressure area. For example, the air blowing outlet 164 with a high wind speed is close to the first negative pressure area or the air blowing outlet 164 with a low wind speed is close to the first negative pressure area. When the low wind speed air blowing outlet is close to the first negative pressure area, the escaping oil fume will be continuously pressed downwards, then escape outwards and then be pressed downwards again. In this way, due to the air flow organization of the range hood 20, the air at the lower part is more easily inhaled by the range hood 20, and this part of the low-temperature air mixed with oil fume will enter the air flow organization of the range hood 20 and be exhausted.

[0048] When the high wind speed air blowing outlet is close to the first negative pressure area, the escaping oil fume will be continuously pressed down to the range hood 20, thus avoiding escape. If the straight line formed by these three air blowing outlets 164 is parallel to the wall surface of the smoke collecting hood 202 of the range hood 20, then the air blowing outlets 164 with high wind speed and low wind speed are parallel to the first negative pressure area, and there is the largest blocking area, further reducing the possibility of escape.

[0049] In some embodiments of the present invention, the first negative pressure area of the oil fume exhaust device includes a smoke inlet 201, and an oil accumulation part (not shown in the figure) is provided at the smoke inlet 201. The oil accumulation part is arranged in the smoke collecting hood 202 and is used for collecting the condensed oil on the wall surface of the smoke inlet 201. When the range hood 20 and the air conditioner are working, a part of the cold air discharged from the air supply outlet 102 of the air conditioner enters the smoke inlet 201, thereby reducing the temperature of the oil-containing flue gas at the smoke inlet 201 and the oil accumulation part. The oil-containing components in the oil-containing flue gas here are easy to condense after cooling, and thus accumulate more in the oil part, thereby reducing the oil-containing components discharged into the building air duct 30, and finally reducing the oil-containing components in the flue gas discharged to the outside, further reducing the pollution to the surrounding environment.

[0050] Moreover, generally a cooking device such as a pot placed on a gas stove, an induction cooker and other appliances is arranged below the range hood. When the cooking appliance works to heat the pot placed on it, oil-containing flue gas will be generated above the pot. A part of the cold air in the positive pressure area reaches the area where the cooking appliance is located, and thus will be mixed with the oil-containing flue gas above the pot, thereby reducing the temperature of the oil-containing flue gas. When these cooled oil-containing flue gases enter the smoke inlet 201, it is easier for the oil-containing components to condense when passing through the oil accumulation part, thereby increasing the oil collection efficiency of the oil accumulation part. After most of the oil-containing components therein are absorbed by the oil accumulation part, they are then discharged to the building air duct 30 through the exhaust air duct 203.

[0051] In some embodiments of the present invention, the air inlet 161 forms a second negative pressure area. The second negative pressure area is far from the first negative pressure area, and the distance between the two is not less than 1.5 meters, and the positive pressure area is between the first negative pressure area and the second negative pressure area. Specifically, as Figure 9 shown, the air inlet 161 arranged at the position of the ceiling 40 forms a second negative pressure area IN2 in the area below it, the area below the air supply outlet 102 forms a positive pressure area OUT, and the area below the smoke inlet 201 of the range hood forms a first negative pressure area IN1. The positive pressure area OUT is between the first negative pressure area IN1 and the second negative pressure area IN2, thereby effectively isolating the first negative pressure area IN1 and the second negative pressure area IN2. If there is no intermediate positive pressure area between the first negative pressure area IN1 and the second negative pressure area IN2, an interference will occur between the two, causing a "wind robbing" effect, so that the oil-containing flue gas that should originally enter the first negative pressure area IN1 will be attracted by the second negative pressure area IN2, and a part of it will enter the second negative pressure area IN2 and finally enter the evaporation heat exchanger 110, thereby causing the surface of the evaporation heat exchanger 110 to accumulate oil-containing components, seriously affecting its heat exchange efficiency, and further reducing the refrigeration capacity of the air conditioner. After an exhaust positive pressure area is arranged between these two negative pressure areas that are both for suction, the interference generated by the two is greatly reduced. And through experimental verification, when the distance between these two negative pressure areas is not less than 1.5 meters, the interference between the two can be further reduced.

[0052] In some embodiments of the present invention, the distance between the positive pressure zone and the first negative pressure zone is less than the distance between the positive pressure zone and the second negative pressure zone. For example, the distance between the central region of the positive pressure zone and the center of the first negative pressure zone is 0.5 meters, while the distance between the center of the positive pressure zone and the center of the second negative pressure zone is 1 meter. At this time, more cold air discharged from the positive pressure zone enters the low-pressure negative pressure zone, so as to effectively cool the oil-containing flue gas in the first negative pressure zone, ultimately reducing the amount of oil-containing components in the flue gas discharged outdoors, and at the same time effectively avoiding the interference between the cold air in the positive pressure zone and the hot air in the second negative pressure zone, so that more cold air in the positive pressure zone participates in cooling other areas in the room and then enters the second negative pressure zone, thereby improving the refrigeration effect of the air conditioner.

[0053] In some embodiments of the present invention, as Figures 1 to 4 shown, the air conditioner is arranged in the housing of the main body 100. The lower part of the housing is matched with the mounting plate 103 to form an internal cavity. The evaporation heat exchanger 110, the compressor 109, and the air supply fan 152 are all installed in the internal cavity. It may further include a condensation heat exchanger 108, which together constitute the basic components for refrigeration or heating of the air conditioner. An evaporator air inlet 106 is provided on one side of the main body 100 to provide the air volume for heat exchange of the evaporation heat exchanger 110. A condenser air inlet 171 may further be provided to provide the air volume for heat exchange of the condensation heat exchanger 108; or the evaporator air inlet 106 and the condenser air inlet 171 may be combined into one air inlet, and the chamber where the evaporation heat exchanger 110 and the condensation heat exchanger 108 are located is connected through one air inlet at the same time to provide the air volume for heat exchange for them at the same time. A discharge port 101 is provided on the other side of the main body 100 to discharge the air volume after heat exchange by the condensation heat exchanger 108. As a specific installation scenario of the air conditioner, when installed in a kitchen, as Figures 5 to 7 shown, the air conditioner is installed at the position where the ceiling 40 is located. Its bottom is at the height of the ceiling 40, and other positions of the main body 100 are above the ceiling 40. The main body is provided with an evaporator air inlet 106 and a condenser air inlet 171. A range hood 20 is installed in the area near the lower part of the air supply port 102. The evaporator air inlet 106 is connected to the air inlet 161 through a flexible air duct 162, so as to realize that the air inlet is far away from the area where the range hood 20 is located, so as to minimize the amount of oil-containing flue gas in the air entering the air inlet 161 and avoid too much oil-containing flue gas from entering the surface of the evaporation heat exchanger 110 and affecting its heat exchange efficiency. The discharge port 101 of the air conditioner is connected to an exhaust air duct 163, and the other end of the exhaust air duct 163 is merged with a smoke exhaust duct 203 through a tee and discharged into the building duct 30.

[0054] In some embodiments of the present invention, as Figure 1 、 Figures 13 to 17As shown in the figure, the air outlet 102 of the air conditioner is arranged at the bottom of the air conditioner, specifically on the air conditioner mounting plate 103. A light-emitting component 130 is arranged around the air outlet 102 for displaying the working state of the ceiling-mounted air conditioner; the light-emitting component 130 includes a first light-emitting body 131b and a light guide channel facing the first light-emitting body 131b. The air supply of the air outlet 102 has a component in the same direction as the light guide direction of the light guide channel. Here, the air volume with the same light guide direction means that after the light emitted by the first light-emitting body 131b is processed by the light guide of the light guide channel, there is a region where the light-emitting direction partially or completely coincides with the air supply direction of the air outlet 102.

[0055] The light-emitting component 130 can be arranged completely around the air outlet 102 or partially around the air outlet 102. The working state of the air conditioner is indicated by the display state of the first light-emitting body 131b, such as different colors and blinking frequencies. The first light-emitting body 131b component can be an integral part, so as to be completely or partially arranged around the air outlet 102, such as Figure 1 the light-emitting component 130 in the figure is an integral part and is completely arranged around the air outlet 102; or the first light-emitting body 131b component can also be composed of multiple independent first light-emitting body 131b sub-components, and these first light-emitting body 131b sub-components are sequentially arranged around the air outlet 102, so as to achieve the effect of surrounding the air outlet 102 in the overall display.

[0056] Since it is installed around the air outlet 102, the display area is larger than the dot-shaped display area of the existing indicator light method of the air conditioner, that is, it is converted from dot-shaped display to surface-shaped display. Moreover, the air outlet 102 generally supplies air towards the position where the user is located, so it is easy to be seen by the user. The user can see the light-emitting state of the first light-emitting body 131b around the air outlet 102 as long as they look up slightly, so as to facilitate the user to understand the current working state of the air conditioner and improve the user experience.

[0057] Optionally, the light guide direction is the direction towards the user area, and the air supply direction of the air outlet 102 is towards the user area. Taking Figures 1 to 3 the figure shown as an example, when the light-emitting component 130 and the air outlet 102 are installed on the mounting plate 103 and the air conditioner is hoisted on the ceiling of the room, the air outlet 102 can be set for the area where the user is located, so that the air supply direction is towards the user area, and the light-emitting component 130 is also above the user, and its light guide direction is also in the user area, so as to facilitate the user to view.

[0058] In some embodiments of the present invention, such as Figures 10 to 12As shown, the air supply opening 102 is formed with a vertically arranged air duct wall surface. The air duct wall surface is formed in a cylindrical shape, and the cylindrical air duct wall surface is arranged close to the light-emitting component 130. Thus, a cylindrical air outlet 164 is formed at the air supply opening 102. Three air outlets 164 are arranged in a straight line. The radial cross-section of the cylinder can be circular, square, triangular or other shapes. In the figure, it is circular, that is, cylindrical. In the figure, there are three adjacent air outlets 164, which are arranged along one side parallel to the mounting plate 103. Near the air outlet 164, a wind guiding structure is also provided for adjusting the air volume and the wind direction. Specifically, the wind guiding structure consists of a wind guiding blade 104 and a rotating shaft. The rotating shaft is installed on the cylindrical wall surface, and the wind guiding blade 104 is adapted to the cylindrical wall surface. Thus, when the wind guiding blade 104 is at different rotation positions through the rotating shaft, the wind guiding blade 104 blocks the size of the cylindrical air duct, realizes the adjustment of the air volume passing through the air outlet 164, and realizes the adjustment of the wind direction through the guiding action of the wind guiding blade 104, so as to better meet the user's demand for the directional air supply direction.

[0059] In some embodiments of the present invention, such as Figures 12 to 17As shown, the light-emitting component 130 includes a cover 132 and a first light-emitting plate 131. A first light-emitting body 131b is installed on the first light-emitting plate 131. A solid light guide channel is provided in a partial area on the cover 132. There is a gas light guide channel between the cover 132 and the first light-emitting body 131b. The cover 132 has at least one side vertical edge, and this side vertical edge is an opaque edge. An opaque layer is provided on the outer side of the light-transmitting material of this opaque edge. When the first light-emitting body 131b component is installed on the mounting plate 103, its first light-emitting body 131b is installed in the accommodation space formed by the side edge and the bottom edge of the cover 132, and a space is formed by the distance between the first light-emitting body 131b and the upper wall surface of the bottom edge 132c of the cover 132 of the cover 132, thereby forming a gas light guide channel. The light emitted by the first light-emitting body 131b is scattered into the accommodation space of the cover 132 in this way. The cover 132 is made of a light-transmitting material, and an opaque layer is coated on the side edge of the cover 132 to achieve light impermeability on the side edge. The opaque layer can be coated on the inner wall surface or the outer wall surface of the side edge, preferably on the inner wall surface, so that the cover 132 looks consistent in color from the outside. By setting the side edge of the cover 132 to be light-impermeable, and the bottom edge of the cover 132 is made of a light-transmitting material, a solid light guide channel is formed, so that the light emitted by the first light-emitting body 131b only passes through the bottom edge 132c of the cover 132 for light guiding and then exits, forming at least partial coincidence with the air supply direction of the air supply port 102, so that the light emission is directed towards the area where the user is located, facilitating the user to view. Preferably, the bottom edge 132c of the cover is thicker than the side edge, so that the light guide channel formed by the bottom edge forms a refractive and condensing effect on the light, so that the light is gathered by the light guide channel and more directed towards the direction of the air supply port 102, to coincide more with the air supply direction, thus making it more convenient for the user to view.

[0060] In some embodiments of the present invention, as Figure 14 and Figure 9 shown, the cover 132 includes two side vertical edges, namely an outer side vertical edge 132d and an inner side vertical edge 132e. These two side vertical edges and the bottom edge 132c of the cover 132 enclose a cavity. The first light-emitting body 131b is installed in this cavity. At least the outer side vertical edge 132d of these two side vertical edges is an opaque edge, or both of the two side vertical edges are opaque edges, and only the bottom edge 132c of the cover is light-transmitting, thereby preventing the light emitted by the first light-emitting body 131b from leaking from the outer side vertical edge 132d and affecting the overall display effect.

[0061] Furthermore, as Figures 9 to 14As shown, the cover body 132 is provided with a stepped portion, which specifically includes a stepped bottom 132b and a stepped top 132a. The solid light guide channel is arranged on the stepped top 132a. The stepped bottom 132b is light-impermeable, and the side vertical edge is the side edge of the stepped bottom 132b; the top stepped surface of the stepped top 132a is a light-transmissive surface, and the side edge of the stepped top 132a is a light-impermeable surface. Among them, one side edge of the stepped top 132a and the stepped bottom 132b facing the air outlet 102 is arranged close to the cylindrical wall surface of the air outlet 164. Its side edge can be coated with an unclear light material, and opaque materials are coated on both the side edge and the bottom stepped surface of the stepped bottom 132b, and an opaque material is coated on the side edge of the stepped top 132a. Only the top stepped surface of the stepped top 132a is allowed to pass light, so that the light emitted by the first light-emitting body 131b can only be emitted from the top stepped surface after reaching the solid light guide channel arranged on the stepped top 132a, thereby forming an appropriately wide light ring around the wall surface of the air outlet 164, and the width of the light ring is determined by the width of the top stepped surface. Since the thickness of the stepped top 132a is larger than the thickness of the stepped bottom 132b, the solid light guide channel can be relatively thick, thereby forming a better light-concentrating effect.

[0062] When the air conditioner is working, cold air is conveyed out from the air outlet 102, so that the temperature of the cylindrical wall surface of the air outlet 164 is lower than the surrounding environment temperature. In this way, the temperature of the air in the narrow space between one side edge of the stepped top 132a and the stepped bottom 132b facing the air outlet 102 and the cylindrical wall surface is reduced, and then the temperature of one side edge of the stepped top 132a and the stepped bottom 132b facing the air outlet 102 is reduced. Finally, the temperature in the cavity where the first light-emitting body 131b is installed is reduced, thereby reducing the working temperature of the light-emitting body and improving its working life. At the same time, it has the effect of raising the temperature of the air outlet 164 and avoiding condensation due to local low temperature.

[0063] Furthermore, an opaque material is coated on the bottom edge of the stepped bottom 132b, and only the bottom of the stepped top 132a is reserved as a transparent layer, so that light only enters the solid light guide channel from the bottom of the stepped top 132a. Since the bottom of the stepped bottom 132b is the outer peripheral part of the bottom edge of the step, which is located in the outer area at the bottom of the cover body 132, if the outer area is light-transmissive, it is easy for light to leak from the bottom of the cover body 132, thus affecting the overall display effect.

[0064] In some embodiments of the present invention, the first light-emitting body 131b is located at or partially located in the projection area where the stepped top 132a is located. Such as Figure 9As shown, the first light emitter 131b is disposed adjacent to or targeting the projection area of the top step 132a, which is conducive to allowing as much light emitted by the first light emitter 131b as possible to enter the solid light guide channel where the top step 132a is located, thereby increasing the brightness of the aperture formed by the display component.

[0065] In some embodiments of the present invention, the light emitting component 130 is disposed on the lower side of the mounting plate 103 and has a downwardly protruding boss 111 formed thereon. The first light emitter 131b is disposed on the first PCB board 131a, and the first PCB board 131a is detachably fixed to the surface of the boss 111 of the boss 111. A wire passing hole (not shown in the figure) is provided on the mounting plate 103, and the power supply wire electrically connected to the first PCB board 131a passes through the wire passing hole. As Figures 9 to 14 shown, a downward boss 111 is formed around the peripheral area of the air outlet 102. The first light emitter 131b is mounted on the first PCB board 131a, and the first PCB board 131a is detachably connected to the surface of the boss 111. Specifically, screw holes can be provided on the boss 111, through holes are provided on the first PCB board 131a, and then the first PCB board 131a is fixed to the surface of the boss 111 by screws. The first light emitter 131b can be an LED lamp, preferably a surface-mounted LED lamp, which can be soldered to the first PCB board 131a. A control circuit board of the air conditioner (not shown in the figure) is installed in the space on one side of the mounting plate 103 of the air conditioner where the compressor 109 is installed. The control circuit board is connected to a wire for supplying power to the light emitting component 130, and the wire is electrically connected to the first PCB board 131a through the wire passing hole on the mounting plate 103, thereby realizing the controllable control of the light emitting operation of the first light emitter 131b by the control circuit board. By fixing the first PCB board 131a on which the first light emitter 131b is mounted to the surface of the boss 111, when the cover 132 of the light emitting component 130 is installed on the mounting plate 103, the first light emitter 131b extends into the cavity of the cover 132, and through the fitting of the side of the cover 132 and the side of the boss 111, a better light sealing effect is achieved, avoiding light leakage from the gap where the side of the cover 132 contacts the mounting plate 103, thereby affecting the overall aperture display effect.

[0066] In some embodiments of the present invention, in addition to including the air conditioner structure in the above embodiments, the air conditioner further includes a second light emitting plate 120. The second light emitting plate 120 includes a plurality of second light emitters 122 that emit light toward the user area, and is disposed on the lower bottom surface of the mounting plate 103. There is also an air gap layer provided between the second light emitting plate 120 and the mounting plate 103, and a light transmissive cover 105 is further provided on the outside. There is an air gap layer between the second light emitting plate 120 and the light transmissive cover 105. As Figure 1 and Figure 9 toFigure 14 As shown, a plurality of second light-emitting bodies 122 are mounted on the second light-emitting panel 120. The specific structure thereof may be the same as the mounting structure of the first light-emitting body 131b of the light-emitting assembly 130. The second light-emitting bodies 122 are also surface-mounted packaged LED lamps, which are welded and mounted on the second PCB board 121 of the second light-emitting bodies 122. The second PCB board 121 is also electrically connected to the control circuit board of the air conditioner through a wire provided in the above-mentioned via hole of the mounting plate 103, so as to realize the control of the working state of the second light-emitting bodies 122 by the control circuit board. The light emitted by the second light-emitting panel 120 is emitted through the light-transmitting cover 105, thereby playing a role of illumination and indication. By providing a light-emitting panel on the mounting plate 103 of the air conditioner, since the area of the mounting plate 103 is relatively large, the entire air conditioner also has an illumination function, which brings convenience to the user. Moreover, during the refrigeration or heating operation of the air conditioner, the evaporator 110 or the condenser 108 will condense cold water and flow to the upper bottom surface of the mounting plate 103, so that the temperature of the entire mounting plate 103 is relatively lower than the surrounding environment. Thus, the temperature of the mounting plate 103 cools the second light-emitting bodies 122 on the second PCB board 121 through the heat conduction of the air layer between the light-emitting plate and the mounting plate 103, which is beneficial to maintaining the temperature of the second light-emitting bodies 122 from being too high to increase their working life and stability. By providing an air layer with a suitable distance between the second light-emitting panel 120 and the light-transmitting cover 105, the light emitted by the plurality of second light-emitting bodies 122 is scattered to form a uniformly bright light surface on the light-transmitting cover 105, avoiding the situation that the light of the second light-emitting bodies 122 forms uneven bright spots on the light-transmitting cover 105 when the second light-emitting bodies 122 are too close to the light-transmitting cover 105, thereby affecting the overall display effect. The light-transmitting cover 105 may be formed of a light-transmitting opaque material, or formed of a transparent material with an opaque layer coated on one surface of the light-transmitting cover 105.

[0067] When the air conditioner is working, cold air is conveyed outward from the air outlet 102, so that the temperature of the cylindrical wall surface of the air outlet 164 is lower than the surrounding environment temperature, and the low temperature of the cylindrical wall surface conducts heat to cool the air in the above two air layers, thereby reducing the temperature in the cavity between the mounting plate 103 and the light-transmitting cover 105, so as to play a role in reducing the working temperature of the second light-emitting bodies 122 in the cavity, and thus effectively improving their working life. At the same time, it has the effect of raising the temperature of the air outlet 164, avoiding condensation due to local low temperature.

[0068] Since the compressor 109, the fan on the evaporator 110 side, and the fan on the condenser 108 side are installed on the mounting plate, when the air conditioner is operating, relatively large noise is generated by these three components in the cavity formed by the housing 106 and the mounting plate 103. The noise is transmitted through the mounting plate 103 to another cavity formed between the mounting plate 103 and the light-transmitting cover 105. Through the air gap layer formed between the second light-emitting plate 120 and the mounting plate 103, the sound waves of the noise are reflected back and forth between the second light-emitting plate 120 and the mounting plate 103 to reduce the sound wave energy before, achieving a noise reduction effect; and the noise further passes through the air gap layer between the second light-emitting plate 120 and the light-transmitting cover 105, so that the sound waves of the noise are reflected back and forth between the second light-emitting plate 120 and the light-transmitting cover 105 to further reduce the sound wave energy, thereby further reducing the noise. In this way, the noise is reduced twice through these two air gap layers, and the noise transmitted to the outside of the air conditioner is effectively reduced, thus achieving an obvious noise reduction effect. This avoids forming a high-noise source above the user's head and reduces the user's experience.

[0069] In some embodiments of the present invention, the light-transmitting cover 105 is provided with a through hole corresponding to the air outlet 102. The cylindrical air duct wall surface passes through this through hole, and the light-transmitting cover 105 covers the light-emitting component 130; the top step surface of the step top 132a is exposed from the through hole. As Figures 1 to 9 shown, the light-transmitting cover 105 is provided with a through hole corresponding to the air outlet 102 and adapted to the shape of the air outlet 102. The cylindrical wall surface of the air outlet 164 extends from the through hole of the light-transmitting cover 105, and the diameter of this through hole is larger than the diameter of the cylindrical wall surface. In this way, the top step surface of the cover 132 of the light-emitting component 130 is exposed from the gap between the through hole and the cylindrical wall surface, so as to form a uniformly lit light ring at the air outlet 102, thereby playing an indicating role, and the light of this light ring is guided to the area where the user is located through the solid light guide channel, which not only increases the aesthetic effect of the entire display but also facilitates the user to view.

[0070] The present invention also proposes an air duct connection device. As Figures 1 to 5 shown, this exhaust air duct connection device includes a condensing heat exchanger 108 provided on the mounting plate 103, and an air duct passing through the condensing heat exchanger 108. It also includes a condensing fan (not shown in the figure). The condensing fan is located in the air duct and drives the air to pass through the condensing heat exchanger 108 and then be heated, and is connected to the hot air duct 163 through the first air outlet 101, and the hot air is sent to the smoke exhaust air duct through this hot air duct 163. The condensing heat exchanger 108 can be a component constituting the refrigeration system of the air conditioner or a heat exchange component in other air treatment devices. In the figure, it is a component constituting the air conditioner. As Figure 2As shown in the figure, a condensate heat exchanger air inlet 171 is provided on one side of the condensate heat exchanger 108. Air enters the condensate heat exchanger 108 through the condensate heat exchanger air inlet 171 for heat exchange and is then discharged to the first air outlet 101 by the condensate fan. The condensate fan and the condensate heat exchanger air inlet 171 are respectively located on both sides of the condensate heat exchanger 108. Of course, in other realizable ways, the two can also be arranged on the same side of the condensate fan. When the air conditioner is operating, the condensate fan sends a high-speed air flow to the condensate heat exchanger 108, and the condensate heat exchanger 108 exchanges heat with the air passing through it, so that the air passing through it is heated into hot air, which is sent out through the first air outlet 101 and discharged to the smoke exhaust duct through the hot air duct 163. Here, the smoke exhaust duct can be Figure 3 the building smoke exhaust duct 30 shown in the figure, or it can also be a through hole formed in the wall for the air duct to pass through. When the building smoke exhaust duct is a through hole formed in the wall for the air duct to pass through, the hot air duct discharges the hot air outside the building wall through this through hole. In this embodiment, the building smoke exhaust duct 30 is used to collect the oil-containing flue gas discharged from the kitchens of the households on each floor and finally discharge it outdoors. By discharging hot air to the building smoke exhaust duct 30 through the hot air duct 163, since the hot air is relatively clean air, it plays a role in reducing the concentration of the oil-containing flue gas in the building smoke exhaust duct 30, and the hot air is a high-speed air flow, so that after being discharged into the building smoke exhaust duct 30, it can accelerate the mixed air flow in the building smoke exhaust duct 30 and make it pass through the building smoke exhaust duct 30 and be discharged outdoors faster, thereby improving the discharge speed of the oil-containing flue gas discharged by the building smoke exhaust duct 30. And it reduces the aggregation of the oil-containing components due to the reduction of the speed and temperature of the oil smoke after entering the building smoke exhaust duct 30, a large amount of which adheres to the wall surface of the building smoke exhaust duct 30, and part of the oil smoke is discharged. Therefore, it can reduce the aggregation of the oil-containing components on the wall surface of the building smoke exhaust duct 30 to discharge more oil-containing components.

[0071] In some embodiments of the present invention, the smoke exhaust duct can be, in addition to the above-mentioned building smoke exhaust duct 30, also a smoke exhaust air duct 203 connected to the building smoke exhaust duct 30. That is, the hot air duct 163 is first connected to the smoke exhaust air duct 203, and then connected to the building smoke exhaust duct 30 through the smoke exhaust air duct 203, so that the hot air duct 163 is finally communicated with the building smoke exhaust duct 30. The smoke exhaust air duct 203 is a duct connected to the oil smoke discharge device for the oil smoke discharge device such as the range hood 20, exhaust fan and other equipment to discharge the oil-containing flue gas. At this time, the hot air in the hot air duct 163 first mixes with the oil-containing flue gas in the smoke exhaust air duct 203 to form a mixed air flow and then is discharged into the building smoke exhaust duct 30 through the smoke exhaust air duct 203. Using the condensate heat exchanger 108 to heat the exhaust air, waste is utilized, the efficiency of the refrigeration system is improved, and at the same time, the problem of oil smoke in the building smoke exhaust duct is improved.

[0072] In some embodiments of the present invention, the condensation heat exchanger 108 is part of a refrigeration cycle. One end of the heat exchanger 108 is connected to the exhaust port of the compressor 109, and the other end is sequentially connected to a throttle valve and an evaporation heat exchanger 110, and then connected to the suction port of the compressor 109. Thus, a refrigeration system is formed by connecting the condensation heat exchanger 108, the throttle valve, the compressor 109, and the evaporation heat exchanger 110 through the refrigerant pipe 153. Among them, the compressor 109 and the evaporation heat exchanger 110 are also installed on the mounting plate 103. The condensation heat exchanger 108 has heat exchange fins extending vertically on the air side, and the refrigerant pipe 153 extends horizontally through the heat exchange fins. During the refrigeration cycle, condensed water is generated on the heat exchange fins of the evaporation heat exchanger 110, flows downward onto the mounting plate 103, and collects in the water storage area.

[0073] In some embodiments of the present invention, the condensation heat exchanger 108 is provided with a water adding device. This water adding device makes water adhere to the heat exchange fins and flow downward on the fins, drip onto the mounting plate 103, and the water distributor continues to make it adhere to the heat exchange fins. Specifically, as Figure 2 shown, the condensation heat exchanger 108 has heat exchange fins extending vertically, that is, heat exchange fins. A water adding device is provided on the condensation heat exchanger 108 to disperse the condensed water into multiple uniform water flows or multiple splashing droplets, and sprinkle them on the fins of the condensation heat exchanger 108, thereby improving the heat exchange efficiency. The heat exchange fins guide part of the condensed water to the mounting plate 103. The mounting plate 103 is formed with a water storage area, and specifically, the water storage area can be located in the area between the evaporation heat exchanger 110 and the condensation heat exchanger 108 on the mounting plate 103. In this way, the condensed water generated during the operation of the evaporation heat exchanger 110 is discharged to the water storage area. Since the temperature of the condensed water generated when the evaporation heat exchanger 110 operates in the refrigeration state is lower than the ambient temperature, and the temperature of the condensation heat exchanger 108 through the heat exchanger fins is higher than the ambient temperature, the condensed water is discharged to the fin surface of the condensation heat exchanger 108, which is beneficial to improving the heat exchange effect of the condensation heat exchanger 108, thereby improving the heat exchange efficiency of the condensation heat exchanger 108, and thus improving the energy efficiency of the entire air conditioner. Moreover, during the heat exchange process between the condensation heat exchanger 108 and the air, due to the continuous flow of condensed water through the heat exchange fins, the humidity of the air passing through the heat exchange fins increases, thereby forming hot air with a higher humidity. When it is discharged into the smoke exhaust duct, it mixes with the oil-containing flue gas in the smoke exhaust duct, increasing the humidity of the oil-containing flue gas, which is beneficial to the condensation of the oil-containing components therein, so that more oil-containing components condense on the inner wall surface of the smoke exhaust duct, thereby reducing the oil-containing components in the flue gas finally discharged to the outside through the smoke exhaust duct, and thus reducing the pollution of the oil-containing components to the external air.

[0074] In some embodiments of the present invention, such as Figure 1 、 Figures 5 to 11As shown, the hot air pipe 163 is connected to the smoke exhaust air duct 203 through a tee 50, and a heat exhaust air valve 172 is provided between the first exhaust port 101 and the interface of the hot air pipe 163 connecting to the tee 50. The heat exhaust air valve 172 is a one-way valve, and the tee 50 has a common exhaust port, which is connected to the building smoke exhaust air duct 30. In this way, the oily smoke in the smoke exhaust air duct 203 and the hot air in the hot air pipe 163 are collected and discharged to the building air duct through the tee 50. The heat exhaust air valve 172 prevents the oily smoke in the smoke exhaust air duct 203 from flowing back into the first exhaust port 101 through the tee 50 and entering the condensing heat exchanger 108 when the hot air pipe 163 does not transport hot air, thereby polluting the condensing heat exchanger 108 and reducing its heat exchange efficiency. The heat exhaust air valve 172 is Figure 1 The tee piece 50 can be installed at the position of the first air outlet 101, or it can be installed in the hot air pipe 163. There are two ways to install the tee piece 50: Figures 5 to 10 In the embodiment, the three-way piece 50 is installed near the smoke exhaust duct 30 of the building. Figure 5 As shown, the outlet of the tee 50 passes through the through hole of the wall and enters the building exhaust duct 30, or the outlet of the tee 50 is connected to the exhaust pipe passing through the through hole of the wall, and the other two interfaces of the tee 50 are respectively connected to the hot air pipe 163 and the exhaust duct 203, and the oily smoke is directly discharged to the building exhaust duct 30 through the outlet. Figure 11 As shown, the tee piece 50 is arranged near the first exhaust port 101, and at this time, one interface of the tee piece 50 is connected to one section of the smoke exhaust air duct 203, and its exhaust port is connected to another section of the smoke exhaust air duct 203, and the other end of the section of the smoke exhaust air duct 203 is connected to the building smoke exhaust air duct 30, and the other interface of the tee piece 50 is connected to the hot air pipe 163. At this time, the hot air in the hot air pipe 163 is merged into the oily smoke in the smoke exhaust air duct 203 through the tee piece 50, and is discharged into the building smoke exhaust air duct 30 through the smoke exhaust air duct 203. Since the inlet end of the smoke exhaust duct 203 is generally connected to the range hood 20, the air volume of the oily smoke exhausted by the range hood 20 is greater than the air volume in the hot air duct 163. The diameter of the smoke exhaust duct 203 is preferably greater than the diameter of the hot air duct 163. The diameter of the interface of the tee 50 connecting the smoke exhaust duct 203 is greater than the diameter of the interface connecting the hot air duct 163. When a large amount of oily smoke passes through the tee 50, the channel where the oily smoke flows will form a negative pressure on the hot air channel connection, thereby forming an attraction effect on the hot air channel, playing a role in accelerating the hot air circulation speed in the hot air duct 163, thereby increasing the hot air volume circulating in the hot air duct 163, and further promoting the improvement of the heat exchange efficiency of the condensing heat exchanger 108. In order to form an effective negative pressure on the hot air channel in the tee 50, such as Figure 10As shown, the included angle α between the three-way member 50 connecting the smoke exhaust air duct 203 and the exhaust air duct is 30 to 90 degrees, preferably 45 degrees or 60 degrees.

[0075] The present invention also provides a ceiling-mounted air conditioner 10 (hereinafter referred to as the air conditioner). The ceiling is arranged at the top of the room. The ceiling-mounted air conditioner means that the air conditioner is arranged within the ceiling area. It can be installed above the ceiling, with only the air outlet blowing downward out of the ceiling area; or it can be arranged below the ceiling, or partially below the ceiling, which is convenient for air supply and can also be installed when the space above the ceiling is limited.

[0076] The ceiling-mounted air conditioner 10 includes the air duct connection device mentioned in the above embodiment, such as Figures 1 to 4As shown in the figure, the air conditioner includes a main body 100. The main body 100 includes a housing disposed on the outside. The housing is fixedly connected to a mounting plate 103 to form an internal chamber. A condensation heat exchanger 108, an evaporation heat exchanger 110, a compressor 109, a throttle valve, and a refrigerant pipe 153 connecting these components are installed in the chamber. Among them, the evaporation heat exchanger 110 is disposed on a water guiding rib 146 of the mounting plate 103. A water storage area (not shown in the figure) is formed on the mounting plate 103. The water guiding rib 146 guides the condensed water on the evaporation heat exchanger 110 to flow towards the water storage area. The water storage area can be specifically located in the area between the evaporation heat exchanger 110 and the condensation heat exchanger 108 on the mounting plate 103. The position of the mounting plate 103 where the water storage area is located can be set lower than the position where the evaporation heat exchanger 110 is relatively installed, such as recessed in the mounting plate 103 to form a certain slope. The angle of this slope relative to the horizontal plane can generally be between 2 and 10 degrees, so that the condensed water generated by the evaporation heat exchanger 110 flows to the water storage area along the slope. A plurality of protruding vertically arranged water guiding ribs 146 are formed on the surface of the mounting plate 103 where the evaporation heat exchanger 110 is installed. The bottom surface of the fins of the evaporation heat exchanger 110 abuts against these water guiding ribs 146. These water guiding ribs 146 are preferably evenly distributed, and the arrangement direction of the water guiding ribs 146 is the same as the arrangement direction of the fins of the evaporation heat exchanger 110, and are set to a certain height, so as to divide the space between the bottom surface of the evaporation heat exchanger 110 and the surface of the mounting plate 103 into drainage cavities one by one. Thus, the condensed water generated on the surface of its fins is evenly introduced onto the surface of the mounting plate 103 through the water guiding ribs 146 and flows into the water storage area along the slope. Since the fins of the evaporation heat exchanger 110 are densely distributed and the spacing between each fin is extremely small, generally only a few millimeters, when the evaporation heat exchanger 110 is directly installed on the surface of the mounting plate 103, because the bottom surface of the evaporation heat exchanger 110 directly contacts the surface of the mounting plate 103, the small spacing between the fins hinders the flow of water, thereby reducing the discharge speed of the condensed water, causing excessive accumulation of condensed water at the position where the evaporation heat exchanger 110 is close to the surface of the mounting plate 103, and affecting the heat exchange efficiency of the evaporation heat exchanger 110. Therefore, setting the water guiding ribs 146 can improve the heat exchange efficiency of the evaporation heat exchanger 110.

[0077] In some embodiments of the present invention, the water storage area is arranged close to the condensation heat exchanger 108. The water adding device is a water wheel (not shown in the figure). The water storage area has a water tank with an arc-shaped bottom. The water wheel is arranged corresponding to this water tank. The water wheel is driven by a motor. The water wheel has water deflecting blades, and the water deflecting blades splash water onto the heat exchange fins of the condensation heat exchanger 108. In this way, through the operation of the water wheel, the water in the water storage area is continuously splashed onto the heat exchange fins, and evaporated on the heat exchange fins with a higher temperature, promoting the heat exchange efficiency of the heat exchange fins. At the same time, the condensed water in the water storage area is continuously evaporated and consumed, so that its water level will not rise, and there is no need to additionally set a drain pipe in the air conditioner to discharge the condensed water to the outside.

[0078] In some embodiments of the present invention, the water adding device is a water pump 142 and a water distributor 141. As Figure 2 and Figure 4 shown, the water distributor 141 is disposed on the condensation heat exchanger 108. The water pump 142 sucks condensate from the water storage area and sends it to the water distributor 141 under pressure. The water distributor 141 has an inlet. A water distribution chamber is formed inside the water distributor 141. The water pump 142 is connected to the inlet through a discharge pipe so that the condensate flows into the water distribution chamber. A plurality of drain holes are provided on the lower side of the water distribution chamber. Through the plurality of drain holes, a plurality of uniform water flows are formed. The water storage area is specifically located in the area between the evaporation heat exchanger 110 and the condensation heat exchanger 108 on the mounting plate 103. The water pump 142 can pump the water in the water storage area to a higher height. The water distributor is disposed on the top surface of the condensation heat exchanger 108. A plurality of uniformly distributed drain ports (not shown in the figure) are provided on one side of the water distributor facing its top surface. An inlet is provided on one side surface of the water distributor. The inlet is connected to the discharge port of the water pump 142 through a water delivery pipe. The condensate is pumped and pressurized by the water pump 142 and then transported to the water distributor through the water delivery pipe. The water distributor then uniformly discharges the condensate to the surface of the heat exchange fins, i.e., the fins, of the condensation heat exchanger 108. After heat exchange and evaporation through the fins, a part of the water is evaporated, and the remaining part flows downward by gravity to the surface of the mounting plate 103 and enters the water storage area, and then is pumped by the water pump 142 and transported to the water distributor again to be evaporated by the condensation heat exchanger 108 here, so that the water in the water storage area is continuously evaporated by the condensation heat exchanger 108 and reduced to a safe liquid level height.

[0079] Optionally, a water distribution chamber is formed inside the water distributor. The side wall of the water distribution chamber is provided with an inlet, and the drain ports are uniformly arranged on the bottom surface of the water distribution chamber, so as to form a uniform water flow of the water in the water distribution chamber and discharge it to the top surface of the condensation heat exchanger 108, so as to enable as many fins of the condensation heat exchanger 108 as possible to participate in the heat exchange and evaporation effect of the condensate, improve the evaporation speed of the condensate, and at the same time improve the heat exchange efficiency of the condensation heat exchanger 108.

[0080] The present invention also provides a kitchen air system, which includes the ceiling-mounted air conditioner 10 in the above embodiment, and further includes a range hood 20, which has an exhaust fan and a second exhaust port (not shown in the figure) connected to the exhaust fan. The second exhaust port communicates with an exhaust air duct 203, and the exhaust air duct is used for sending air to a building exhaust air duct 30. As Figures 5 to 11As shown, the range hood 20 includes a smoke collecting hood 202. An air inlet 201 is formed by an opening below the smoke sucking hood. A suction fan (not shown in the figure) is provided in the smoke collecting hood 202. The second air outlet of the smoke collecting hood 202 of the range hood 20 is connected to an exhaust air duct 203. The exhaust air duct 203 can pass through the ceiling 40 and be connected to the building exhaust air duct 30, so that when the range hood works, the oil-containing flue gas inhaled from the air inlet 201 passes through the smoke collecting hood 202 and then enters the exhaust air duct 203 and is finally discharged into the building exhaust air duct 30 and exhausted to the outside through the building exhaust air duct 30. It should be noted that the building exhaust air duct 30 can be Figure 5 the channel enclosed by the wall as shown in the figure, or can also be a through hole simply installed on the wall. For example, in some kitchens, there is a wall on the outdoor side, and a through hole is opened on this wall. At this time, the exhaust air duct 203 directly passes through one side of this through hole to discharge the oil-containing flue gas to the outside. At the same time, the high-humidity hot air formed after heat exchange by the condensation heat exchanger 108 discharged from the first air outlet 101 of the air conditioner 10 is introduced into the exhaust air duct 203 through the hot air duct 163, thereby increasing the air speed in the exhaust air duct 203, helping the oil-containing flue gas to be discharged to the outside more quickly, and then improving the smoke sucking efficiency of the range hood 20. Moreover, the high-humidity air can reduce the accumulation of the oil-containing components in the oil-containing flue gas on the wall surface of the building exhaust air duct 30, thereby forming a dynamic cleaning effect on its wall surface, avoiding the continuous accumulation of the oil-containing components on the wall surface leading to the continuous deepening of the wall surface pollution, and hindering the flow of the oil-containing flue gas in the air duct.

[0081] In some embodiments of the present invention, a negative pressure area is formed under the suction fan. This negative pressure area can absorb the oil-containing flue gas generated by cooking and be discharged to the exhaust air duct 203 after being pressurized by the suction fan; the exhaust air duct 203 is communicated with the hot air duct 163, and a common air supply duct is formed through a tee joint 50. As Figures 5 to 11 shown, the air supply outlet 102 of the air conditioner forms a positive pressure area for downward air supply, and a first negative pressure area is formed under the suction fan. The downward air supply area formed by the air supply outlet 102 of the air conditioner is close to the area where the range hood 20 is located, so that when the user cooks in the kitchen, the position where the user is located is in the air supply area, so that the air conditioner conveys cold air to the area where the user is located, making the user feel cool and reducing the heat brought by the high temperature generated during cooking.

[0082] Preferably, the air supply outlet 102 is located above the first negative pressure area, and the air flow discharged from the air supply outlet 102 enters the first negative pressure area and is discharged to the building exhaust air duct 30 through the suction fan of the range hood 20. As Figures 5 to 9As shown, the position of the air outlet 102 of the air conditioner of the range hood 20 is located on the ceiling 40, and its position is higher than the smoke inlet 201 of the range hood 20. Therefore, the position of the air outlet 102 is higher than the first negative pressure area where the smoke inlet 201 is located. Since the position of a person's head is generally not lower than the height of the opening of the smoke collecting hood 202 of the range hood 20, that is, not lower than the height of the smoke inlet 201. Therefore, when a person is in the positive pressure area, the cold air discharged from the air outlet 102 will at least reach the area where the person's head is located to cool it, so that the user can experience coolness and comfort. Then a part enters the first negative pressure area where the smoke inlet 201 is located, and is then discharged into the building smoke exhaust duct 30 through the exhaust fan via the smoke exhaust duct 203. Since the exhaust fan inhales a part of the cold air from the smoke inlet 201 and discharges it into the building smoke exhaust duct 30, the temperature of the oil-containing flue gas in the passage from the smoke inlet 201 to the three-way connection 50 of the smoke exhaust duct 203 is reduced, thereby accelerating the condensation of the oil-containing components in this section of the passage, especially the condensation of the oil-containing components in the smoke collecting hood near the smoke inlet 201, reducing the content of the oil-containing components in the passage, and ultimately reducing the oil-containing components in the oil-containing flue gas discharged outdoors, thereby reducing the pollution to the surrounding environment.

[0083] In some embodiments of the present invention, the first negative pressure area of the range hood 20 includes the smoke inlet 201. An oil accumulation part (not shown in the figure) is provided at the smoke inlet 201. The oil accumulation part is arranged in the smoke collecting hood 202 and is used for collecting the condensed oil on the wall surface of the smoke inlet 201. When the range hood 20 and the air conditioner are working, a part of the cold air discharged from the air outlet 102 of the air conditioner enters the smoke inlet 201, thereby reducing the temperature of the oil-containing flue gas and the oil accumulation part at the smoke inlet 201. The oil-containing components in the oil-containing flue gas here are easy to condense after cooling, and thus accumulate more in the oil part, thereby reducing the oil-containing components discharged into the building smoke exhaust duct 30, and ultimately reducing the oil-containing components in the flue gas discharged outdoors, further reducing the pollution to the surrounding environment.

[0084] In some embodiments of the present invention, the first negative pressure area of the range hood 20 includes the smoke inlet 201. An oil accumulation part (not shown in the figure) is provided at the smoke inlet 201. The oil accumulation part is arranged in the smoke collecting hood 202 and is used for collecting the condensed oil on the wall surface of the smoke inlet 201. When the range hood 20 and the air conditioner are working, a part of the cold air discharged from the air outlet 102 of the air conditioner enters the smoke inlet 201, thereby reducing the temperature of the oil-containing flue gas and the oil accumulation part at the smoke inlet 201. The oil-containing components in the oil-containing flue gas here are easy to condense after cooling, and thus accumulate more in the oil part, thereby reducing the oil-containing components discharged into the building smoke exhaust duct 30, and ultimately reducing the oil-containing components in the flue gas discharged outdoors, further reducing the pollution to the surrounding environment.

[0085] Moreover, generally a cooking device such as a cooking pot placed on a gas stove, an induction cooker or other appliances is arranged below the range hood. When the cooking appliance works to heat the cooking pot placed thereon, oil-containing flue gas is generated above the cooking pot. A part of the cold air in the positive pressure area reaches the area where the cooking appliance is located, and thus will be mixed with the oil-containing flue gas above the cooking pot, thereby reducing the temperature of the oil-containing flue gas. When these temperature-reduced oil-containing flue gases enter the air inlet 201, the oil-containing components are more likely to condense when passing through the oil accumulation part, thus increasing the oil collection efficiency of the oil accumulation part. After most of the oil-containing components therein are absorbed by the oil accumulation part, they are then discharged to the building smoke exhaust duct 30 through the smoke exhaust air duct 203.

[0086] In some embodiments of the present invention, when the air conditioner and the kitchen are working, the humidity of the air discharged from the first air outlet 101 is greater than 70%, and the temperature is more than 5 degrees higher than the temperature of the air inlet 161. Thus, hot and humid air is formed in the hot air duct 163, which effectively hinders the aggregation of the oil-containing components in the oil-containing flue gas entering the smoke exhaust air duct 203 and the building smoke exhaust duct 30, thereby forming a dynamic cleaning effect on the walls of the smoke exhaust air duct 203 and the building smoke exhaust duct 30, avoiding the continuous accumulation of the oil-containing components on the wall leading to the continuous deepening of the wall pollution, and also avoiding the obstruction of the flow of the oil-containing flue gas in the air duct.

[0087] The present invention also proposes a control method, which is applied to the ceiling-mounted air conditioner proposed in the above embodiments. An oil smoke exhaust device such as a range hood is also installed in the room where the air conditioner is located. The control method includes:

[0088] Step S100, obtaining the operating wind speed of the oil smoke exhaust device;

[0089] Step S200, adjusting the working state of the air conditioner according to the operating wind speed of the range hood, where the working state includes one of the on / off state and the rotational speed of the air conditioner fan.

[0090] In this embodiment, taking the exhaust device as a range hood as an example, the air conditioner and the range hood can communicate with each other. Thus, the air conditioner obtains the working state of the range hood. If it is detected that the range hood starts to work, the air conditioner can be controlled to work for refrigeration, so as to realize the linkage between the operation of the air conditioner and the operation of the range hood, so that when the range hood is turned on and the user is cooking, the air conditioner conveys cold air towards the area where the user is located.

[0091] Specifically, when the operating wind speed of the range hood increases, it indicates that the cooking device generates a large amount of fumes at present. Therefore, the air conditioner can adjust the rotation speed of the blower accordingly, increasing the air supply wind speed. While enhancing the cooling of the area where the user is located, it also increases the connection with the first negative pressure area where the smoke inlet of the range hood is located, so that more cold air is mixed with the oil-containing fumes in the first negative pressure area, thereby reducing its temperature and improving the oil accumulation effect of the range hood.

[0092] Furthermore, the control method further includes:

[0093] Step S300: Obtain the firepower of the cooking device in the room where the air conditioner is located;

[0094] Step S400: Adjust the set temperature and / or operating frequency of the air conditioner according to the firepower.

[0095] In this embodiment, when the air conditioner is installed in the kitchen, a cooking device such as a cooker is installed below the range hood. The air conditioner can communicate with the cooker, or the range hood communicates with the cooker, and then the air conditioner communicates with the range hood to achieve the interconnection of the three, so that the air conditioner obtains the working state of the cooker. When the user turns on the cooker to cook, if the firepower is increased, the temperature in the area where the user is located will increase. Therefore, the air conditioner can lower the current set temperature to strengthen the cooling of the area where the user is located. If the compressor of the air conditioner is a variable-frequency compressor, the operating frequency of the compressor can also be increased, so that the command capacity of the air conditioner in the current period is improved, and then the temperature of the cold air discharged from the air outlet is lower, thereby strengthening the cooling of the area where the user is located, so that the area where the user is located will not feel the temperature rise due to the increase in the firepower of the cooker, thus improving the user experience.

[0096] In the description of this specification, the descriptions with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0097] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0098] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0099] In the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0100] In the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0101] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as a limitation to the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A ceiling-mounted air conditioner, including a mounting plate provided with a compressor, and an evaporative heat exchanger is also provided on the mounting plate. The evaporative heat exchanger is communicated with the suction port of the compressor. It is characterized in that: A condensing heat exchanger is also installed on the mounting plate; It includes an air supply outlet forming a downward air flow, an air duct communicating with the air supply outlet, a air supply fan and the evaporative heat exchanger are arranged in the air duct, and the speed of the vertical component of the downward air flow is greater than 0.5 m / s; A light-emitting component is arranged around the air supply outlet for displaying the air supply working state of the ceiling-mounted air conditioner; the light-emitting component includes a first light-emitting body and a light guide channel towards which the light-emitting body faces. The air supply of the air supply outlet has a component in the same light guide direction as the light guide channel of the light guide channel; The air supply working state of the ceiling-mounted air conditioner is indicated by the display state of the first light-emitting body to indicate the working state of the air conditioner; The light-emitting component also includes a cover body, and a solid light guide channel is arranged in a partial area of the cover body, and light can only be emitted from the solid light guide channel; The cover body includes two side edges and a bottom edge, only the bottom edge is light-transmitting, and the first light-emitting body is located in the cavity surrounded by the two side edges of the cover body and the bottom edge of the cover body; The cover body is provided with a stepped portion, the solid light guide channel is arranged at the top of the step of the stepped portion, the bottom of the step of the stepped portion is light-impermeable, and the side edge is the side edge of the bottom of the step; the top step surface of the top of the step is a light-transmitting surface, the bottom step surface of the bottom of the step is a light-impermeable surface, and the side edge of the top of the step is a light-impermeable surface; It also includes a second light-emitting plate, the second light-emitting plate includes a plurality of second light-emitting bodies, emits light towards the user area, is arranged on the lower bottom surface of the mounting plate, and there is an air gap layer between the second light-emitting plate and the mounting plate, and a light-transmitting cover is also arranged on the outside, and there is an air gap layer between the second light-emitting plate and the light-transmitting cover; The light-transmitting cover is provided with a through hole adapted to the air supply outlet corresponding to the air supply outlet, and the light-transmitting cover covers the light-emitting component, and the top step surface of the top of the step is exposed from the through hole.

2. The ceiling-mounted air conditioner according to claim 1, characterized in that The air supply fan is arranged between the air supply outlet and the evaporative heat exchanger, the air outlet end of the air supply outlet is located below the mounting plate, when the air supply fan operates, it sucks air from the side of the evaporative heat exchanger, and the air supply fan is a centrifugal fan, and the air it throws out is discharged from the air outlet end, forming a downward air flow with a vertical component speed greater than 0.95 m / s.

3. The ceiling-mounted air conditioner according to claim 1, characterized in that The air duct is communicated with an air inlet, and the air inlet is arranged far from the air supply outlet; the air duct includes a flexible air duct, one end of the flexible air duct is communicated with the air inlet, and the other end is communicated with the cavity where the evaporative heat exchanger is located; the distance between the air inlet and the air supply outlet is not less than 1.2 m, and the flexible air duct can be stretched to a length not less than 1.0 m.

4. The ceiling-mounted air conditioner according to claim 1, characterized in that The air supply outlet includes a side with high wind speed and a side with low wind speed, and is divided into two or more air blowing outlets. Near the air blowing outlet, a wind guiding structure is provided for adjusting the air volume and air direction; the wind guiding structure is arranged at the air blowing outlet through a rotating shaft.

5. A kitchen air system, characterized in that it includes the ceiling-mounted air conditioner according to any one of claims 1 to 4, characterized in that: the air supply outlet forms a positive pressure area, and further includes an oil fume exhaust device with an exhaust fan, the exhaust fan forms a first negative pressure area, and the positive pressure area communicates with the first negative pressure area.

6. According to the kitchen air system of claim 5, characterized in that the air supply outlet is located above the first negative pressure area, and the air flow discharged from the air supply outlet enters the first negative pressure area and is discharged to the building air duct through the exhaust fan; the side with high wind speed of the air supply outlet is close to the first negative pressure area; or the side with low wind speed of the air supply outlet is close to the first negative pressure area; or the side with high wind speed and the side with low wind speed of the air supply outlet are arranged in parallel with the first negative pressure area.

7. According to the kitchen air system of claim 6, characterized in that the first negative pressure area of the oil fume exhaust device includes a smoke inlet, and an oil accumulation part is arranged at the smoke inlet for collecting the condensed oil on the wall surface of the smoke inlet; a cooking device is arranged under the oil fume exhaust device, and the cooking device generates oil fume-containing flue gas, and the oil fume-containing flue gas is mixed with the air flow discharged from the air supply outlet and is discharged to the building air duct by the exhaust fan.

8. According to the kitchen air system of claim 6, characterized in that the air inlet of the air duct forms a second negative pressure area, which is far from the first negative pressure area, and the distance between the two is not less than 1.5 meters, and the positive pressure area is between the first negative pressure area and the second negative pressure area; the distance between the positive pressure area and the first negative pressure area is less than the distance between the positive pressure area and the second negative pressure area.

9. A control method, which is applied to the ceiling-mounted air conditioner according to any one of claims 1 to 4, and an oil fume exhaust device such as a range hood is also installed in the room where the air conditioner is located. The control method includes: Obtaining the operating wind speed of the oil fume exhaust device; Adjusting the working state of the air conditioner according to the operating wind speed of the range hood, where the working state includes one of the on / off state and the rotation speed of the air conditioner fan.

10. According to the control method of claim 9, characterized in that the control method further includes: Obtaining the fire power of the cooking device in the room where the air conditioner is located; Adjusting the set temperature and / or operating frequency of the air conditioner according to the fire power.

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