Kitchen air conditioning system

Abstract

The application discloses a kitchen air conditioning system, comprising an air conditioner host, a smoke machine host and an exhaust fan. The first machine shell of the air conditioner host has a first heat exchange chamber and a second heat exchange chamber, the first heat exchange chamber has a first return air inlet and a first air outlet, and the second heat exchange chamber has a second return air inlet and a second air outlet. The smoke machine host comprises a second machine shell and an oil filter, the second machine shell has an oil fume channel and a heat exchange air duct, the oil fume channel has an oil fume inlet and a flue outlet, the heat exchange air duct has an air conditioner air outlet and an air conditioner air inlet, and the air conditioner air inlet is communicated with the first air outlet. The exhaust fan comprises a fan machine shell, a suction exhaust fan and a heat exchange exhaust fan, and the suction exhaust fan and the heat exchange exhaust fan can rotate simultaneously or only one of them can rotate. The kitchen air conditioning system has the double functions of sucking oil fume and discharging heat-exchanged air flow, is simple and compact in arrangement, and the efficiency of the exhaust fan is fully utilized.

Description

Technical Field

[0001] This invention relates to the field of household appliances, and more specifically to a kitchen air conditioning system. Background Technology

[0002] Most households install range hoods in their kitchens to remove cooking fumes, and some may install air conditioners in the summer due to high temperatures. Equipping a kitchen with all these appliances is costly and requires considerable space, taking up a lot of space. Existing technologies include integrated kitchen air conditioning and range hood designs, but these designs are divided into indoor and outdoor units. Users need to specify a location for the outdoor unit, limiting its usability. Some designs, while highly integrated, share motors and impellers between the outdoor unit of the air conditioner and the range hood. However, because the requirements for the impellers for removing cooking fumes and extracting hot air from the air conditioner differ significantly, the efficiency of the impeller and motor cannot be fully utilized. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a kitchen air conditioning system that integrates a kitchen air conditioner and a range hood, and reconfigures the fans required for heat exchange and fume extraction to meet demand and improve utilization efficiency.

[0004] A kitchen air conditioning system according to an embodiment of the present invention includes: an air conditioning unit, the air conditioning unit including a first casing, a first heat exchanger, and a second heat exchanger, the first casing defining a first heat exchange chamber and a second heat exchange chamber, the first heat exchanger being disposed in the first heat exchange chamber, the second heat exchanger being disposed in the second heat exchange chamber, the first heat exchange chamber having a first return air vent and a first air outlet, and the second heat exchange chamber having a second return air vent and a second air outlet; and a range hood unit, the range hood unit including a second casing and an oil filter, the second casing having an oil fume duct and a heat exchange air duct, the oil fume duct having an oil fume inlet and a flue outlet disposed on the second casing, and the oil filter being disposed in the first heat exchange chamber. Within the aforementioned fume duct, the heat exchange duct has an air conditioning outlet and an air conditioning inlet located on the second housing. The air conditioning inlet is connected to the first outlet via an outlet pipe. An exhaust fan is also included, comprising a fan housing, a suction exhaust impeller, and a heat exchange exhaust impeller. The fan housing has a first interface connected to the second outlet, a second interface connected to the flue outlet, and a third interface connected to the exhaust pipe. When the suction exhaust impeller and the heat exchange exhaust impeller rotate, they both drive the airflow towards the third interface. The suction exhaust impeller and the heat exchange exhaust impeller are independent of each other, allowing either one to rotate or both to rotate simultaneously.

[0005] According to the kitchen air conditioning system of the present invention, the system includes an air conditioning unit and a range hood unit. A heat exchange duct is installed on the range hood unit, connected to the air outlet of the air conditioning unit. The range hood unit guides the heat-exchanged airflow to the kitchen. The range hood unit integrates the dual functions of extracting fumes and expelling the heat-exchanged airflow, effectively improving the ambient temperature during cooking. The kitchen air conditioning system has a high degree of integration, few components, and simple and convenient layout. The exhaust fan is configured with a suction exhaust fan wheel and a heat exchange exhaust fan wheel. Only one of the suction exhaust fan wheel or the heat exchange exhaust fan wheel can rotate, or both can rotate simultaneously. This allows the suction exhaust fan wheel to be activated when the kitchen air conditioning system needs to extract fumes, the heat exchange exhaust fan wheel to be activated when heat exchange is needed for the second heat exchanger, and both to be activated when both are needed. This allows the exhaust fan to be matched with the corresponding impeller and motor as required, maximizing the efficiency of the exhaust fan and achieving energy saving.

[0006] In some embodiments, both the suction exhaust fan and the heat exchange exhaust fan are centrifugal fans, and the air inlet end of the suction exhaust fan is positioned directly opposite the second interface.

[0007] Specifically, the axes of the suction exhaust fan and the heat exchange exhaust fan are parallel to each other. The suction exhaust fan has a suction exhaust volute, and the heat exchange exhaust fan has a heat exchange exhaust volute. Further, the fan housing defines a spaced-apart mounting cavity and a mixing cavity. The first interface and the second interface are corresponding to the mounting cavity, and the third interface is corresponding to the mixing cavity. Both the suction exhaust fan and the heat exchange exhaust fan are installed within the mounting cavity, and their outlet ends are connected to the mixing cavity.

[0008] Optionally, the first interface and the third interface are located on opposite sides of the fan casing, the second interface is located at the bottom of the fan casing, and the heat exchange exhaust fan draws air from above.

[0009] Optionally, the first interface is provided with a first valve for turning the first interface on or off, and the second interface is provided with a second valve for turning the second interface on or off.

[0010] In some embodiments, the air conditioning unit is adapted to be installed above the kitchen ceiling, and the kitchen air conditioning system further includes a return air assembly adapted to be installed on the kitchen ceiling, through which air in the kitchen flows to the first return air vent.

[0011] Specifically, the return air assembly includes a front frame and a panel grille, the front frame being adapted to be fixed to the kitchen ceiling, and the panel grille being detachably mounted on the front frame.

[0012] In some embodiments, there are multiple air conditioning outlets, which are spaced apart on the second housing.

[0013] Specifically, at least one of the air conditioning outlets is located on the front of the second housing and above the fume inlet.

[0014] In some embodiments, the heat exchange duct and the fume duct are arranged side by side.

[0015] In some embodiments, the heat exchange duct has a cold air outlet that supplies air toward the oil filter, and the cold air outlet is provided with a cold air switch for turning it on or off.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of the structure of a kitchen air conditioning system in a kitchen according to an embodiment of the present invention;

[0019] Figure 2 yes Figure 1 Front view of the kitchen air conditioning system in the kitchen according to the embodiment shown;

[0020] Figure 3 yes Figure 1 Top view of the kitchen air conditioning system in the kitchen according to the embodiment shown;

[0021] Figure 4 yes Figure 1 A perspective view of the air conditioner unit in the embodiment shown;

[0022] Figure 5 yes Figure 4 A horizontal cross-sectional view of the air conditioning unit in the embodiment shown;

[0023] Figure 6 yes Figure 4 A vertical cross-sectional view of the air conditioning unit in the embodiment shown;

[0024] Figure 7 yes Figure 1 A perspective view of the main unit of the range hood in the embodiment shown;

[0025] Figure 8 yes Figure 7 The front view of the main unit of the range hood in the embodiment shown;

[0026] Figure 9 yes Figure 8 A sectional view of section KK in the middle;

[0027] Figure 10 yes Figure 9 A magnified view of a portion of the image marked with the central circle I;

[0028] Figure 11 yes Figure 8 Sectional view of section RR in the middle;

[0029] Figure 12 yes Figure 1 A three-dimensional schematic diagram of the exhaust fan in the embodiment shown;

[0030] Figure 13 yes Figure 12 The horizontal cross-sectional view of the exhaust fan in the embodiment shown is located at the middle position.

[0031] Figure 14 yes Figure 12 The diagram shows a horizontal cross-sectional view of the exhaust fan near the bottom in the embodiment shown.

[0032] Figure 15 yes Figure 12 A vertical cross-sectional view of the exhaust fan in the embodiment shown;

[0033] Figure 16 yes Figure 1 A perspective view of the return air assembly in the embodiment shown from a bottom angle;

[0034] Figure 17 yes Figure 16 Top view of the central return air assembly.

[0035] Figure label:

[0036] Kitchen air conditioning system 1000

[0037] Air conditioner unit 100

[0038] First casing 10, first heat exchange chamber 11, first return air vent 11a, first air outlet 11b, second heat exchange chamber 12, second return air vent 12a, second air outlet 12b, condensate drain 13, air conditioning partition 15.

[0039] First heat exchanger 20, second heat exchanger 30, compressor 40, support leg 50

[0040] Air conditioner blower fan 71,

[0041] Range hood main unit 200

[0042] Second housing 210, fume duct 211, fume inlet 211a, fume outlet 211b, heat exchange duct 212, air conditioning outlet 212a, air conditioning inlet 212b, cold air outlet 212c

[0043] Oil filter part 220

[0044] First air guide plate 250, pivot part 251, air guide arc panel 252, second air guide plate 260, third air guide plate 261, first air guide drive component 262, second air guide drive component 263, third air guide drive component 264.

[0045] Cold air switch 280, cold air switch drive motor 281

[0046] Switch panel assembly 271, oil collection box 272, operation panel 273

[0047] Exhaust fan 300, fan housing 310, first interface 311, first valve 321, second interface 312, second valve 322, third interface 313, first valve motor 331, second valve motor 332.

[0048] Assembly chamber 301, mixing chamber 302, partition plate 303

[0049] Suction and discharge impeller 350, suction and discharge volute 351, suction and discharge motor 352, heat exchange and discharge impeller 360, heat exchange and discharge volute 361, heat exchange and discharge motor 362.

[0050] Return air assembly 400, front frame 410, outer frame 411, connecting frame 412, snap-fit ​​hole 413, panel grille 420, hook part 421.

[0051] Exhaust duct 902, air outlet duct 903, ceiling 800, Detailed Implementation

[0052] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0053] In the description of this invention, it should be understood that the terms "vertical," "horizontal," "width," "thickness," "height," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0054] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0055] The following is for reference. Figures 1-17 A kitchen air conditioning system 1000 according to an embodiment of the present invention is described.

[0056] like Figures 1-3 As shown, the kitchen air conditioning system 1000 according to the present invention includes an air conditioning unit 100, a range hood unit 200, and an exhaust fan 300. The kitchen air conditioning system 1000 according to the present invention can be used independently in a kitchen. The air conditioning unit 100 has cooling and / or heating functions and can be used to change the ambient temperature in the kitchen. The range hood unit 200 is used to extract the fumes generated during cooking in the kitchen, while the exhaust fan 300 can exhaust the fumes extracted by the range hood, providing negative pressure for the range hood's fume extraction.

[0057] In related technologies, kitchen air conditioning systems have low integration and numerous components. Both the range hood and the air conditioner need to guide airflow, but they cannot share the same fan. Furthermore, the air outlet location of the air conditioner is limited, being far from the user's position while cooking, making it impossible to guarantee the ambient temperature during cooking. To address this issue, the proposed solution in this application provides a highly integrated kitchen air conditioning system 1000, comprising an air conditioning unit 100 and a range hood unit 200.

[0058] like Figure 4-6As shown, in the kitchen air conditioning system 1000 according to the present invention, the air conditioning unit 100 includes a first housing 10, a first heat exchanger 20 and a second heat exchanger 30. The first housing 10 defines a first heat exchange chamber 11 and a second heat exchange chamber 12. The first heat exchanger 20 is disposed in the first heat exchange chamber 11 and is adapted to exchange heat with the airflow flowing through the first heat exchange chamber 11. The second heat exchanger 30 is disposed in the second heat exchange chamber 12 and is adapted to exchange heat with the airflow flowing through the second heat exchange chamber 12. The first heat exchanger 20 and the second heat exchanger 30 can be connected by a refrigerant pipeline. A compressor 40 and a throttling device are provided on the refrigerant pipeline so that the first heat exchanger 20 and the second heat exchanger 30 can complete the Carnot cycle.

[0059] The first heat exchange chamber 11 has a first return air inlet 11a and a first air outlet 11b, and the second heat exchange chamber 12 has a second return air inlet 12a and a second air outlet 12b. The first return air inlet 11a and the second return air inlet 12a can be connected to the outside world to provide airflow for heat exchange to the air conditioning unit 100.

[0060] The first casing 10 of the air conditioning unit 100 integrates the first heat exchanger 20 and the second heat exchanger 30 into one unit, which improves the integration of the air conditioning unit 100. There is no need to set up an outdoor unit, and therefore no need to set up an outdoor unit installation position. This reduces the number of parts in the kitchen air conditioning system 1000, making the installation of the kitchen air conditioning system 1000 simpler and more convenient.

[0061] Specifically, an air conditioning blower 71 is provided in the first heat exchange chamber 11. When the air conditioning blower 71 is running, it draws in air from the first return air port 11a and blows the airflow out from the first air outlet 11b.

[0062] like Figures 7-9 As shown, the range hood main unit 200 includes a second housing 210 and an oil filter 220. The second housing 210 has an oil fume channel 211, and the oil filter 220 is located within the oil fume channel 211. For example, the oil filter 220 can be located at the oil fume inlet 211a of the oil fume channel 211. The oil fume channel 211 has an oil fume inlet 211a and a flue outlet 211b, both of which are formed on the second housing 210. The oil filter 220 can filter oil fumes within the oil fume channel 211, thus realizing the basic smoke extraction and oil filtration functions of the range hood main unit 200.

[0063] A heat exchange duct 212 is also provided inside the second housing 210 of the range hood main unit 200. The heat exchange duct 212 has an air conditioning outlet 212a and an air conditioning inlet 212b. Both the air conditioning outlet 212a and the air conditioning inlet 212b are located on the second housing 210, and the air conditioning inlet 212b is connected to the first outlet 11b through an air outlet pipe 903.

[0064] The low-temperature or high-temperature airflow generated by the air conditioning unit 100 can be transmitted through the air outlet duct 903 to the heat exchange air duct 212 inside the range hood unit 200, and then blown from the range hood unit 200 to the kitchen through the air conditioning outlet 212a of the heat exchange air duct 212, or even directly to the user, effectively improving the kitchen temperature during the cooking process and enhancing the user's cooking comfort.

[0065] By setting a heat exchange duct 212 on the second casing 210 of the range hood main unit 200, the airflow generated by the air conditioning main unit 100 can be blown towards the user through the range hood main unit 200. When the air conditioning outlet 212a is located on the second casing 210, the air conditioning outlet range is basically located in the user's cooking area, which can be more adapted to the user's work position and make the layout of the kitchen air conditioning system 1000 simpler.

[0066] The exhaust fan 300 is connected to the second air outlet 12b and the flue outlet 211b respectively to exhaust the air in the second heat exchange chamber 12 and the fume duct 211.

[0067] The exhaust fan 300 can simultaneously power both the range hood main unit 200 and the air conditioning main unit 100, providing power for the airflow within the fume duct 211 and the second heat exchange chamber 12, respectively. The exhaust fan 300 can selectively serve either the range hood main unit 200 or the air conditioning main unit 100. The exhaust fan 300 ensures that both the gas after heat exchange in the second heat exchange chamber 12 and the filtered fume duct 211 can be driven by the exhaust fan 300 to flow and be discharged outdoors. This integration ensures that both the airflow and the fume flow within the second heat exchange chamber 12 are assisted by the exhaust fan 300. Furthermore, this configuration allows the discharge of both gases to be handled through the same duct system, reducing the number of parts and shortening the duct length, thus simplifying pipe connections.

[0068] In this application, the exhaust fan 300 can drive the flow of flue gas in the fume duct 211 and the flow of air in the second heat exchange chamber 12. Because the exhaust fan 300 serves a dual purpose, multiple usage modes can be configured as needed. For example, the connection between the exhaust fan 300 and the fume duct 211 and the second heat exchange chamber 12 can only be one of two options (e.g., a switchable three-way valve connects all three). When the exhaust fan 300 is connected to the fume duct 211, the flow between the exhaust fan 300 and the second heat exchange chamber 12 is completely disconnected; when the exhaust fan 300 is connected to the second heat exchange chamber 12, the flow between the exhaust fan 300 and the fume duct 211 is completely disconnected, thus heat exchange and fume extraction can only be performed separately. In other solutions, the exhaust fan 300 simultaneously draws in gas from both the fume duct 211 and the second heat exchange chamber 12 while operating, allowing heat exchange and fume extraction to occur simultaneously. In another design, the kitchen air conditioning system 1000 also includes a proportional adjustment device to adjust the ratio of gas drawn into the fume duct 211 and the second heat exchange chamber 12 when the exhaust fan 300 is running. In this way, the kitchen air conditioning system 1000 can perform heat exchange and fume extraction separately or simultaneously.

[0069] According to the kitchen air conditioning system 1000 of the present invention, the kitchen air conditioning system 1000 is provided with an air conditioning unit 100 and a range hood unit 200. A heat exchange duct 212 is provided on the range hood unit 200, and the heat exchange duct 212 is connected to the air conditioning outlet 212a of the air conditioning unit 100. The range hood unit 200 can guide the airflow after heat exchange to the kitchen. The range hood unit 200 integrates the dual functions of sucking up oil fumes and exhausting the airflow after heat exchange, effectively improving the ambient temperature of the user during the cooking process. The kitchen air conditioning system 1000 has a high degree of integration, few parts, and simple and convenient layout.

[0070] Specifically, such as Figure 12 and Figure 13 As shown, the exhaust fan 300 includes: a fan housing 310, a suction exhaust impeller 350, and a heat exchange exhaust impeller 360. The fan housing 310 has a first interface 311 connected to the second air outlet 12b, a second interface 312 connected to the flue outlet 211b, and a third interface 313 connected to the exhaust pipe 902.

[0071] Both the suction exhaust fan 350 and the heat exchange exhaust fan 360 drive the airflow towards the third interface 313 when they rotate. As their names suggest, the suction exhaust fan 350 is a fan wheel matched to the kitchen air conditioning system 1000 for extracting cooking fumes. When the suction exhaust fan 350 is running, it can provide a large suction force, creating a large negative pressure at the fume inlet 211a of the range hood main unit 200, thereby drawing in more fumes and reducing smoke escape. The heat exchange exhaust fan 360 is a fan wheel matched to drive the airflow within the second heat exchange chamber 12. Compared to the suction exhaust fan 350, the heat exchange exhaust fan 360 requires less power.

[0072] In this application, the suction exhaust fan 350 and the heat exchange exhaust fan 360 are independent of each other, allowing only one of them to rotate, or both to rotate simultaneously. This means that the suction exhaust fan 350 is activated when the kitchen air conditioning system 1000 needs to extract fumes, the heat exchange exhaust fan 360 is activated when heat exchange is needed for the second heat exchanger 30, and both are activated when both are needed. Thus, the exhaust fan 300 can be matched with the corresponding fan and motor according to the operating mode requirements of the kitchen air conditioning system 1000.

[0073] Understandably, to maximize their effectiveness, the exhaust fan 350 and the heat exchange exhaust fan 360 will have different states in different operating modes. For example, when only heat exchange is needed, the exhaust fan 300 requires less airflow; when only fume extraction is needed, the exhaust fan 300 requires more airflow; and when both heat exchange and fume extraction are needed, the exhaust fan 300 requires even more airflow. The exhaust fan 300 in this application can be matched to different operating modes, thus its efficiency can be fully utilized, thereby achieving energy saving.

[0074] Specifically, both the suction exhaust fan 350 and the heat exchange exhaust fan 360 are centrifugal fans. Because the interfaces of the fan casing 310 are connected to either pipes or the outlets of other main units, the airflow area is small. Using centrifugal fans for suction and blowing helps to confine the airflow within the pipes, resulting in lower resistance and losses as the airflow flows through the pipes and interfaces. Furthermore, the smaller size of the centrifugal fan reduces the space occupied by the exhaust fan 300. This is especially beneficial when the exhaust fan 300 is installed indoors, minimizing its space requirements.

[0075] More specifically, such as Figure 13 As shown, the suction exhaust fan 350 has a suction exhaust volute 351, and the heat exchange exhaust fan 360 has a heat exchange exhaust volute 361. The two fans each have their own volute, which not only makes it easy to select appropriate parameters for the fan and volute from standard parts, but also allows for adjustment of their position and distance within the fan casing 310.

[0076] Furthermore, the suction exhaust impeller 350 is driven to rotate by the suction exhaust motor 352. Optionally, at least a portion of the suction exhaust motor 352 extends into the hub of the suction exhaust impeller 350, which can reduce the overall height.

[0077] The heat exchange exhaust fan 360 is driven to rotate by the heat exchange exhaust motor 362. Optionally, at least a portion of the heat exchange exhaust motor 362 extends into the hub of the heat exchange exhaust fan 360, which can reduce the overall height.

[0078] The suction exhaust fan 350 and the heat exchange exhaust fan 360 each have their own motors, making their control and drive very simple. Of course, some designs may use the same motor to control both fans via a transmission assembly.

[0079] In some specific embodiments, the air inlet end of the suction exhaust fan 350 is positioned directly opposite the second interface 312, and optionally the suction exhaust fan 350 and the second interface 312 are coaxially arranged. This arrangement allows the suction exhaust fan 350 to draw smoke from the fume duct 211 with full force during operation, maximizing the transfer of the suction force generated by the suction exhaust fan 350 to the fume duct 211.

[0080] In some designs, since the suction and exhaust fan 350 is a centrifugal fan, both ends of the suction and exhaust fan 350 are air inlets. One air inlet is positioned directly opposite the second interface 312, while the other air inlet faces the first interface 311 or draws air into the fan housing 310. This allows the suction and exhaust fan 350 to draw air in both directions.

[0081] Advantageously, such as Figure 13 As shown, the axes of the suction exhaust fan 350 and the heat exchange exhaust fan 360 are parallel to each other, and this parallel arrangement facilitates a compact layout. Moreover, when both rotate, their air inlet directions are parallel, and their air outlet directions are also roughly parallel, resulting in minimal overall swaying of the exhaust fan 300.

[0082] In some embodiments, such as Figure 13 As shown, the fan housing 310 defines a spaced-apart mounting cavity 301 and a mixing cavity 302, which are separated by a partition plate 303. The first interface 311 and the second interface 312 are provided for the mounting cavity 301, and the third interface 313 is provided for the mixing cavity 302.

[0083] Both the suction exhaust fan 350 and the heat exchange exhaust fan 360 are installed inside the mounting cavity 301, and the air outlets of both the suction exhaust fan 350 and the heat exchange exhaust fan 360 are connected to the mixing chamber 302. This separates the air inlet and outlet areas within the fan casing 310, reducing the discomfort caused by backflow and inversion of airflow.

[0084] In addition, the fan casing 310 is configured with a spaced-out mounting cavity 301 and a mixing cavity 302. When either the suction exhaust fan 350 or the heat exchange exhaust fan 360 is in operation, the airflow will not be drawn back to the fan from the third interface 313. This allows the airflow to flow in one direction and avoids short circuits caused by the airflow inside.

[0085] Specifically, such as Figure 13 As shown, the first interface 311 and the third interface 313 are located on opposite sides of the fan housing 310, and the second interface 312 is located at the bottom of the fan housing 310. The heat exchange exhaust fan 360 draws air from above. This not only facilitates the connection of various interfaces and pipes, but also helps to shorten the pipes.

[0086] In some embodiments, such as Figures 1-3 As shown, the exhaust fan 300 is located on the outside of the first housing 10 and the outside of the second housing 210. By setting the exhaust fan 300 on the outside of the first housing 10 and the second housing 210 respectively, the layout of the kitchen air conditioning system 1000 can be more flexible, and the placement of the air conditioning unit 100 and the range hood unit 200 will not be restricted. By arranging the exhaust fan 300 separately, the layout can be carried out in the manner with the shortest pipeline according to the specific structure of the user's kitchen, thereby improving the flexibility of the layout of the kitchen air conditioning system 1000.

[0087] In some designs, the exhaust fan 300 is located in the second heat exchange chamber 12. This arrangement can improve the integration of the kitchen air conditioning system 1000, eliminating the need for a separate exhaust fan 300.

[0088] Specifically, the exhaust pipe 902 can be a flue in the kitchen or a flexible hose that connects the third interface 313 to the flue in the kitchen. The third interface 313 can exhaust the air generated by the air conditioning unit 100 after heat exchange and the oil fumes sucked by the range hood unit 200.

[0089] The range hood main unit 200 and the air conditioning main unit 100 can work independently or in conjunction. The gas discharged from the third interface 313 can be gas with a higher temperature after passing through the second heat exchange chamber 12, or it can be oil fumes drawn by the range hood main unit 200, or it can be a mixture of the two gases.

[0090] In some embodiments, such as Figure 15As shown, the first interface 311 is equipped with a first valve 321 for opening or closing the first interface 311. The first interface 311 is a communication interface connecting the second heat exchange chamber 12 of the air conditioning unit 100 and the fan casing 310 of the exhaust fan 300. The first valve 321 is provided on the first interface 311 to control the opening and closing of the first interface 311, thereby preventing the airflow in the fan casing 310 of the exhaust fan 300 from flowing back to the air conditioning unit 100.

[0091] For example, when the range hood 200 is used alone and the air conditioner 100 is not turned on, the range hood 200 draws in fumes through the fume duct 211, and the fumes enter the exhaust fan 300's fan housing 310 through the second interface 312. Since the fan housing 310 mainly contains fumes, and the air conditioner 100 is not turned on at this time, the fumes can enter the second heat exchange chamber 12 through the first interface 311 on the fan housing 310, which will cause the fumes to spread. The fumes can enter the kitchen through the second return air vent 12a.

[0092] Furthermore, when neither the range hood unit 200 nor the air conditioning unit 100 is working, the gas from the exhaust pipe 902 may flow in the opposite direction under atmospheric pressure. Therefore, a first valve 321 is installed at the first interface 311. The first valve 321 can be selectively opened or closed to prevent reverse airflow from entering the air conditioning unit 100.

[0093] By providing a first valve 321 at the first interface 311, the first valve 321 can be selectively opened or closed to control the first interface 311. When one of the air conditioning unit 100 or the range hood unit 200 is working, the first valve 321 closes the first interface 311 to avoid the influence of the exhaust pipe and the range hood unit 200 on the air conditioning unit 100.

[0094] Optionally, such as Figure 15 As shown, a first valve motor 331 is provided at the first interface 311, and the first valve motor 331 is used to drive the action of the first valve 321.

[0095] In some embodiments, such as Figure 14As shown, the second interface 312 is provided with a second valve 322 for opening or closing the second interface 312. The second interface 312 is used to connect the oil fume duct 211 to the fan housing 310 of the exhaust fan 300. The second valve 322 at the second interface 312 can be used to select to open or close the second interface 312. When the second interface 312 is closed, the oil fume extraction function of the range hood 200 is in the off state, and the oil fumes in the oil fume duct 211 will not enter the fan housing 310. The purpose of the first valve 321 is to prevent the oil fumes in the oil fume duct 211 from entering the fan housing 310 of the exhaust fan 300, so as to avoid the oil fumes from entering the air conditioning unit 100 through the first interface 311 and avoid the occurrence of cross-contamination of oil fumes.

[0096] Optionally, such as Figure 14 As shown, a second valve motor 332 is provided at the second interface 312, and the second valve motor 332 is used to drive the action of the second valve 322.

[0097] In addition, after the air conditioning unit 100 is turned on separately, in order to prevent some airflow from entering the fume duct 211 through the second interface 312, the first valve 321 can also ensure that the high-temperature airflow after heat exchange will not enter the room through the fume duct 211.

[0098] In the scheme of this application, the kitchen air conditioning system 1000 has at least a cooling mode and a fume extraction mode.

[0099] In cooling mode, the compressor 40, the air conditioner blower 71, and the heat exchange exhaust fan 360 all operate. When the compressor 40 operates, the first heat exchanger 20 cools, while the second heat exchanger 30 heats. When the air conditioner blower 71 operates, it draws air into the first heat exchange chamber 11 from the first return air inlet 11a. The drawn-in air flows through the first heat exchanger 20, where its temperature decreases. The low-temperature air is then blown from the first air outlet 11b through the air outlet duct 903 into the heat exchange duct 212 of the range hood main unit 200, and finally, the low-temperature air is blown out from the air conditioner outlet 212a. When the heat exchange exhaust fan 360 operates, it drives air to be drawn into the second heat exchange chamber 12 from the second return air inlet 12a. The drawn-in air flows through the second heat exchanger 30, where its temperature increases, and the high-temperature air can be discharged from the exhaust duct 902.

[0100] In the fume extraction mode, the suction and exhaust fan 350 rotates, driving the fumes to be drawn into the fume duct 211 from the fume inlet 211a, and then discharged through the exhaust pipe 902.

[0101] In some designs, cooling mode and fume extraction mode can operate simultaneously. In this mode, compressor 40 runs, and both impellers of the air conditioner blower 71 and exhaust fan 300 are running. First valve 321 and second valve 322 are both open. Exhaust fan 300 operates, driving fumes into the fume inlet 211a, which then draws them into the fume duct 211. The fumes are then discharged through exhaust fan 300 and exhaust pipe 902, and the airflow that has undergone heat exchange in the second heat exchanger 30 is also driven to be discharged through exhaust fan 300 and exhaust pipe 902.

[0102] When both modes are running simultaneously, air continuously exits from the air conditioner vent 212a, while indoor cooking fumes are continuously drawn into the fume inlet 211a. A slight positive pressure is created at the air conditioner vent 212a, and a slight negative pressure is created at the fume inlet 211a. The incoming air has a repelling effect on the cooking fumes, making it easier for the cooking fumes and surrounding air in the kitchen to be drawn away by the fume inlet 211a. This improves the fume absorption effect, and the added fresh air helps to regulate the temperature in the kitchen, making it healthier for users to breathe fresh air in the kitchen.

[0103] Of course, when the aforementioned components have other forms, the kitchen air conditioning system 1000 can also have more modes, or combinations of more modes. In some designs, the kitchen air conditioning system 1000 also has heating mode, dehumidification mode, etc., which will not be detailed here.

[0104] In the scheme of this application, the connection positions of the first return air outlet 11a and the second return air outlet 12a are very flexible and can be set as needed.

[0105] For example, in some designs, the first return air vent 11a connects directly to the kitchen; in others, it connects to the living room; and in still others, it connects to the outside. Similarly, the second return air vent 12a can connect directly to the kitchen, or to the living room, or to the outside.

[0106] In some embodiments, the second return air vent 12a is connected to a fresh air duct (not shown). The second return air vent 12a can connect to a space outside the kitchen through the fresh air duct, allowing the second heat exchange chamber 12 to draw in air from the space outside the kitchen. The connection location of the other end of the fresh air duct is not limited; one end of the fresh air duct is connected to the second return air vent 12a, and the other end extends to the right to connect to the outside. In other designs, the fresh air duct can extend from the second return air vent 12a toward other rooms, such as connecting to the living room. This arrangement not only draws air from other rooms into the air conditioning unit 100 for heat exchange with the second heat exchanger 30, but also promotes air circulation in other rooms. When the windows of other rooms are opened, the pressure difference allows fresh outside air to be drawn into those rooms, achieving air circulation in those rooms.

[0107] Optionally, the first housing 10 is provided with a fresh air inlet for connecting the first heat exchange chamber 11 and the second heat exchange chamber 12. The first housing 10 is also provided with a fresh air switch assembly (not shown) for opening and closing the fresh air inlet. Thus, when the fresh air inlet is open, the first heat exchange chamber 11 can receive fresh air through the second heat exchange chamber 12. When the first heat exchange chamber 11 needs fresh air, the first return air inlet 11a of the first heat exchange chamber 11 does not need to be connected to the outside. This is equivalent to a fresh air duct drawing in fresh air that can supply both the second heat exchange chamber 12 and the first heat exchange chamber 11.

[0108] The installation of a fresh air vent allows the kitchen air conditioning system 1000 to also have a fresh air mode. The following example illustrates the operating mode when the fresh air vent is installed, with the exhaust fan 300 only able to connect to one of the fume duct 211 or the second heat exchange chamber 12.

[0109] In cooling mode, the fresh air switch assembly closes the fresh air inlet, and the compressor 40, air conditioner blower 71, and exhaust fan 300 all operate. When the compressor 40 operates, the first heat exchanger 20 cools, while the second heat exchanger 30 heats. When the air conditioner blower 71 operates, it draws air into the first heat exchange chamber 11 from the first return air inlet 11a. The drawn-in air flows through the first heat exchanger 20, where its temperature decreases. The low-temperature air is then blown from the first air outlet 11b through the air outlet duct 903 into the heat exchange duct 212 of the range hood main unit 200, and finally, it is blown out from the air conditioner outlet 212a. When the exhaust fan 300 operates, it draws air in from the first return air inlet 11a. The drawn-in air flows through the first heat exchanger 20, where its temperature decreases. The low-temperature air is then drawn into the second heat exchange chamber 12 from the fresh air duct and the second return air inlet 12a. The drawn-in air flows through the second heat exchanger 30, where its temperature increases, and the high-temperature air is discharged from the exhaust duct 902.

[0110] In the fume extraction mode, the exhaust fan 300 operates, driving the fumes to be drawn into the fume duct 211 from the fume inlet 211a, and then discharged through the exhaust fan 300 and the exhaust pipe 902.

[0111] In fresh air mode, the fresh air switch component opens the fresh air inlet, and the air conditioner blower 71 operates. When the air conditioner blower 71 operates, fresh air is sequentially drawn into the first heat exchange chamber 11 through the fresh air duct, the second return air inlet 12a, the second heat exchange chamber 12, and the fresh air inlet. The drawn-in air is blown from the first air outlet 11b through the air outlet duct 903 into the heat exchange air duct 212 of the range hood main unit 200, and finally, the fresh air is blown out from the air conditioner air outlet 212a.

[0112] In this design, the fresh air mode and the fume extraction mode can operate simultaneously. During this mode, the compressor 40 is not running, but the air conditioner blower 71 and the exhaust fan 300 are both running, and the fresh air switch assembly opens the fresh air inlet. When the air conditioner blower 71 is running, fresh air is sequentially drawn into the first heat exchange chamber 11 through the fresh air duct, the second return air inlet 12a, the second heat exchange chamber 12, and the fresh air inlet. The drawn-in air is then blown from the first air outlet 11b through the air outlet duct 903 into the heat exchange duct 212 of the range hood main unit 200, and finally, the fresh air is blown out from the air conditioner outlet 212a. The exhaust fan 300 operates, driving the fumes to be drawn into the fume extraction channel 211 from the fume inlet 211a, and then discharged through the exhaust fan 300 and the exhaust duct 902.

[0113] Furthermore, the setting of the fresh air inlet and fresh air switch assembly allows the first heat exchange chamber 11 and the second heat exchange chamber 12 to share the fresh air from the fresh air duct. The first heat exchange chamber 11 can achieve the fresh air mode without adding a separate fresh air duct, and even the kitchen air conditioning system 1000 can simultaneously turn on the fresh air mode and the fume extraction mode.

[0114] Optionally, the fresh air switch assembly also includes a fresh air filter (not shown in the figure), which is located at the fresh air inlet. This allows the fresh air supplied to the first heat exchange chamber 11 to be filtered, thereby improving the cleanliness of the air entering the room. Further optionally, the fresh air filter can be filter cotton or other components with low air resistance and filtering capabilities.

[0115] In this application, the fresh air switch assembly may include a rotating door to open and close the fresh air inlet. In other embodiments, the fresh air switch assembly includes a stationary door and a moving door (not shown in the figure). The stationary door is fixedly installed at the fresh air inlet and has a stationary door through-hole, while the moving door has a moving door through-hole. In the closed position, the moving door through-hole on the moving door is offset from the stationary door through-hole, thus closing the fresh air inlet. In the open position, the moving door through-hole on the moving door is directly opposite the stationary door through-hole, thus connecting the fresh air inlet.

[0116] In some embodiments, such as Figures 4-6 As shown, the first housing 10 is a rectangular box, and an air conditioning partition 15 is provided inside the first housing 10 to divide the first housing 10 into a first heat exchange chamber 11 and a second heat exchange chamber 12. The first heat exchange chamber 11 and the second heat exchange chamber 12 are respectively formed into rectangular cavities.

[0117] The first return air inlet 11a and the first air outlet 11b are located on opposite sides of the first heat exchange chamber 11, and the second return air inlet 12a and the second air outlet 12b are located on opposite sides of the second heat exchange chamber 12. The first return air inlet 11a and the second return air inlet 12a are located on the same side of the first housing 10, and the first air outlet 11b and the second air outlet 12b are located on the same side of the first housing 10.

[0118] In the first heat exchange chamber 11, the first heat exchanger 20 is positioned near the first return air vent 11a, and the air conditioning blower 71 is positioned near the first air outlet 11b. In the second heat exchange chamber 12, the compressor 40 is positioned near the second return air vent 12a, and the second heat exchanger 30 is positioned near the second air outlet 12b. This arrangement positions the first heat exchanger 20 and the second heat exchanger 30 on opposite sides of the first casing 10, with a large distance between them, facilitating heat insulation between them.

[0119] Optionally, a condensate drain outlet 13 is also provided on the first housing 10 for draining condensate. Optionally, as... Figure 5 As shown, a condensate drain outlet 13 is provided in the first heat exchange chamber 11 to discharge condensate when the air conditioning unit 100 is cooling. In some designs, a condensate drain outlet 13 is also provided in the second heat exchange chamber 12 to discharge condensate when the air conditioning unit 100 is heating.

[0120] Alternatively, a plurality of supports 50 are provided on the bottom wall of the first housing 10, the supports 50 being used to connect to the ceiling 800 to fix the first housing 10 to the ceiling 800. Figure 5 In the example, the first housing 10 is provided with feet 50 at each of its four corners to improve the stability of the connection. Of course, other structures, such as the exhaust fan 300, can also be provided with multiple feet 50 for mounting on the ceiling 800.

[0121] like Figure 1 As shown, the air conditioning unit 100 is installed above the ceiling 800, which allows the air conditioning unit 100 to be concealed using the ceiling 800. Specifically, the pipes connected to the air conditioning unit 100 are also installed above the ceiling 800, which not only improves the aesthetics but also allows for installation and fixation using the ceiling 800.

[0122] Alternatively, the 800mm ceiling can be made of aluminum panels, which are not only lightweight but also easy to clean.

[0123] In some embodiments, the fume inlet 211a is located at the bottom of the range hood main unit 200, which is close to the stove and facilitates the timely extraction of more fumes into the fume duct 211.

[0124] The shape of the main unit 200 of the range hood can refer to the existing structure of range hoods in the technology. It can adopt the shape of a downdraft range hood or a top-draft range hood. In some designs, the bottom of the main unit 200 of the range hood is also equipped with a smoke collection hood, and the oil fume inlet 211a is located at the bottom of the smoke collection hood, which can appropriately increase the area of ​​the negative pressure zone and increase the suction range. Of course, in some designs, the oil fume inlets 211a can also be set on the front and left and right sides of the main unit 200 of the range hood to further increase the suction range.

[0125] Specifically, the oil filter element 220 is an oil filter grille, which can be one or more layers, and there is no limitation here.

[0126] In some embodiments, such as Figure 9 As shown, the heat exchange duct 212 and the fume duct 211 are arranged side by side. The heat exchange duct 212 can be used to circulate the low-temperature airflow generated by the air conditioning unit 100, thereby reducing the temperature of the wall of the heat exchange duct 212. The fume duct 211, which is adjacent to the heat exchange duct 212, can exchange heat with the wall of the heat exchange duct 212 to reduce the temperature of the wall of the fume duct 211. This makes it easier for the grease flowing in the fume duct 211 to condense, thereby improving the filtration effect of the range hood unit 200 on grease.

[0127] In some embodiments, such as Figure 9 As shown, the heat exchange duct 212 and the fume duct 211 can share the same pipe wall. The heat exchange duct 212 and the fume duct 211 can be provided on the second housing 210, and the pipe wall of the heat exchange duct 212 and the pipe wall of the fume duct 211 are the same shell structure, thereby improving the heat exchange effect of the heat exchange duct 212 on the fume duct 211 and enhancing the condensation effect of the fume duct 211 on the fumes.

[0128] Optionally, the heat exchange duct 212 and the fume duct 211 are arranged in a front-to-back direction, with the heat exchange duct 212 located in front of the fume duct 211. This brings the heat exchange duct 212 closer to the user in front of the stove. This arrangement also helps to block the heat radiated forward from the fume duct 211, improving user comfort.

[0129] In some embodiments, such as Figure 1 As shown, the range hood main unit 200 is mainly installed below the kitchen ceiling 800, and the top of the range hood main unit 200 extends onto the ceiling 800. Figure 7 As shown, the flue outlet 211b and the air conditioning inlet 212b are located on the top of the main unit 200 of the range hood, which facilitates connection with other structures, and the connection can be hidden by the ceiling 800.

[0130] In some embodiments, there are multiple air conditioning vents 212a, which are spaced apart on the second housing 210. This increases the airflow range and expands the area used to improve temperature. Optionally, the user can selectively choose to open different air conditioning vents 212a to meet their individual needs.

[0131] For example, when users feel that the ambient temperature is too high, they can increase the airflow by opening multiple air conditioning vents 212a to quickly lower the surrounding temperature. Users can choose air conditioning vents 212a at different heights according to their own height. Users can also choose the appropriate air conditioning vent 212a based on the location of the stove where they are cooking to reduce the feeling of being scorched.

[0132] In some embodiments, multiple air conditioning vents 212a are respectively distributed on the front panel, left side panel, and right side panel of the second housing 210. The air conditioning vents 212a provided on the front panel of the second housing 210 can be directly opposite the user's work area to improve the temperature of the area directly opposite the user. The air conditioning vents 212a located on the left side panel and right side panel of the second interface 312 can be selectively opened and closed. The air conditioning vents 212a located on the left side panel and right side panel can be used to increase the air outlet range and air volume, thereby increasing the air outlet area and applicability of the kitchen air conditioning system 1000.

[0133] Optionally, at least one air conditioning outlet 212a is located on the front. This air conditioning outlet 212a is positioned above the fume inlet 211a. Since the fume inlet 211a can draw in fumes located below it, if the air conditioning outlet 212a is positioned below the fume inlet 211a, the airflow passing through the air conditioning outlet will be drawn away by the fume inlet 211a, failing to achieve a cooling effect. By positioning the air conditioning outlet 212a above the fume inlet 211a, the air conditioning outlet 212a is not interfered with by the fume inlet 211a, ensuring that the airflow from the air conditioning outlet 212a can reach the user's surroundings to improve the user's working environment.

[0134] In a specific embodiment of the present invention, the air conditioning vent 212a located on the front panel of the second housing 210 can be constructed as an elongated vent. The air conditioning vent 212a can extend along the width direction of the second housing 210, or even the air conditioning vent 212a can be almost the same width as the second housing 210, thereby increasing the air outlet width and increasing the area covered by the air conditioning vent 212a.

[0135] The air conditioning vent 212a on the front panel of the second housing 210 is constructed as a rectangular hole. The rectangular hole extends horizontally on the front panel of the second housing 210. The airflow after passing through the first heat exchange chamber 11 is guided through the air conditioning vent 212a to the front area facing the main unit of the range hood 200, and heat exchange is performed on the area to improve the ambient temperature of the front area.

[0136] The air conditioning vents 212a on the left and right sides of the second housing 210 can also be constructed as rectangular vents. The two air conditioning vents 212a on the left and right sides of the second housing 210 can further expand the air outlet range that the air conditioning vents 212a on the main unit 200 can cover. The air conditioning vents 212a on the left and right sides can be selectively closed.

[0137] Multiple cooktops can be installed directly below the range hood main unit 200. The air conditioning vents 212a located on the left and right side panels can be turned on or off depending on the location of the cooktop. For example, when the cooktop on the left is turned on, the air conditioning vent 212a on the left side panel can be turned on to improve the ambient temperature of the corresponding area.

[0138] In some specific embodiments, such as Figure 7 and Figure 8 As shown, each air conditioner outlet 212a is equipped with an air guide plate for adjusting the airflow direction. The air guide plate may include a first air guide plate 250, a second air guide plate 260, and a third air guide plate 261.

[0139] Among them, such as Figure 10 As shown, the first air guide plate 250 includes a pivot portion 251 and an air guide arc panel 252, with the pivot portion 251 formed on the inner side of the air guide arc panel 252.

[0140] The pivot part 251 is connected to the first air guide drive component 262. Figure 7A first air guide drive 262 is shown. The output end of the first air guide drive 262 drives the pivot 251 to rotate. It should be noted that during the rotation of the pivot 251 driven by the first air guide drive 262, the rotation axis of the output shaft of the first air guide drive 262 is the same as the extension direction of the air conditioning outlet 212a on the front panel of the second housing 210. An air guide arc panel 252 is provided on the side of the pivot 251 facing away from the air conditioning outlet 212a. The air guide arc panel 252 is constructed as an arc protruding away from the air conditioning outlet 212a to make the appearance of the range hood main unit 200 more rounded and beautiful. When the first air guide drive 262 drives the first air guide plate 250 to rotate, at least a part of the first air guide plate 250 can rotate into the air conditioning outlet 212a housed on the front of the second housing 210, opening the air conditioning outlet 212a on the front of the second housing 210 and simultaneously hiding the first air guide plate 250.

[0141] Furthermore, since the outer side of the air guide arc panel 252 of the first air guide plate 250 is an arc shape protruding from the front panel of the second housing 210, the first air guide drive member 262 can adjust the air outlet area of ​​the air conditioning vent 212a located on the front of the second housing 210 by changing the pivot angle of the first air guide plate 250. The user can adjust the rotation angle of the first air guide plate 250.

[0142] Air conditioning vents 212a are provided on the left and right sides of the first housing 10. The air conditioning vents 212a may be provided with a second air guide drive 263 and a third air guide drive 264 for driving the second air guide plate 260 and the third air guide plate 261 respectively. The second air guide plate 260 and the third air guide plate 261 may be constructed as rectangular plates.

[0143] Optionally, such as Figure 11 As shown, the second air guide drive component 263 and the third air guide drive component 264 can both be drive motors, and are respectively set on the lower side of the corresponding air conditioning outlet 212a. The output shaft of the drive motor can be connected to the corresponding second air guide plate 260 and the third air guide plate 261. The output shaft of the drive motor is in the same direction as the extension of the corresponding second air guide plate 260 and the third air guide plate 261, so as to drive the second air guide plate 260 and the third air guide plate 261 to open in a direction away from each other, thereby increasing the air outlet width of the range hood main unit 200.

[0144] Similarly, the rotation angles of the second air guide plate 260 and the third air guide plate 261 can be selectively adjusted. By controlling the drive motors that drive the second air guide plate 260 and the third air guide plate 261, the width of the air outlet range of the range hood main unit 200 can be adaptively adjusted, and can be adjusted according to the user's selection.

[0145] like Figure 9 and Figure 8 As shown, in some embodiments, the kitchen air conditioning system 1000 further includes a switch panel assembly 271 for adjusting the size of the fume inlet 211a. The switch panel assembly 271 is movably disposed on the second housing 210. The switch panel assembly 271 may be disposed on the front side of the second housing 210, where the fume inlet 211a is disposed. The fume inlet 211a is disposed on the lower side of the front panel of the second housing 210, and the fume inlet 211a may include a plurality of elongated holes penetrating the front panel of the second housing 210, wherein each elongated hole extends in the height direction and is spaced apart in the width direction of the front panel of the second housing 210.

[0146] Optionally, the switch panel assembly 271 is rotatably or vertically mounted on the second housing 210, and has an open state and a closed state. When the switch panel assembly 271 is in the closed state, it covers the front of the second housing 210, thereby covering the fume inlet 211a on the front of the second housing 210, leaving only the fume inlet 211a located on the lower end face of the second housing 210 open. In the closed state, the switch panel assembly 271 is suitable for situations with lower fume volume, and keeping the switch panel in the closed state reduces the space occupied by the range hood main unit 200.

[0147] When the switch panel assembly 271 switches from the closed state to the open state, the upper end of the switch panel assembly 271 is pivotally connected to the front panel of the second housing 210. The switch panel assembly 271 can also be driven by a drive motor. The output shaft of the drive motor is oriented in the width direction of the front panel of the second interface 312. During the rotation of the second housing 210, the inner side of the switch panel assembly 271 can be pivoted away from the front panel of the second housing 210, so that the switch panel assembly 271 is perpendicular to the front panel of the second housing 210, so that a certain angle is formed between the switch panel assembly 271 and the front panel of the second housing 210, so as to open the fume inlet 211a located on the front panel of the second housing 210 and increase the area of ​​the fume inlet 211a. As the switch panel assembly 271 rotates toward the direction away from the front panel of the second housing 210, the space occupied by the range hood main unit 200 increases, but at the same time, the oil fume inlet 211a located on the front panel of the second housing 210 is opened, which improves the smoke extraction capacity of the range hood main unit 200, making the range hood main unit 200 suitable for extracting large amounts of oil fumes.

[0148] In one embodiment of the present invention, the switch panel assembly 271 can be turned on and off according to user settings or automatically by a sensor that detects oil fumes exceeding a preset value. The switch panel assembly 271 can also be turned on in a combination of these two methods, with user-defined settings having a higher priority than automatic detection. This can further improve the automation level of the kitchen air conditioning system 1000.

[0149] In some embodiments, such as Figure 8 , Figure 9 As shown, an oil collection box 272 is also provided on the lower side of the second housing 210. The lower end of the second housing 210 can be constructed as a trapezoidal structure, and the thickness of the trapezoidal structure gradually decreases in the direction of downward extension. The front side of the trapezoidal structure is provided with the oil fume inlet 211a that is not covered by the switch panel assembly 271. This part of the oil fume inlet 211a is located on the front side of the trapezoidal structure, and the front side of the trapezoidal structure is a slope. By placing this part of the oil fume inlet 211a on the slope, the cross-sectional area of ​​this part of the oil fume inlet 211a can be increased, thereby enabling sufficient oil fume adsorption capacity when the switch panel assembly 271 is not open.

[0150] Furthermore, the lower end of the second housing 210 is constructed as a trapezoidal structure, which facilitates the flow of oil fumes through the oil fume inlet 211a, where the fumes, under the influence of gravity, flow towards the oil collection box 272 located on the bottom surface of the trapezoidal structure. Simultaneously, the upper end of the oil collection box 272 has an opening, the width of which is greater than the width of the trapezoidal structure's floor, and at least a portion of the opening is directly aligned with the oil fume inlet 211a in the height direction. This ensures that the oil fumes filtered by the oil fume inlet 211a, located on the front side of the trapezoidal structure, can fall into the oil collection box 272, preventing oil fumes from dripping onto the countertop.

[0151] like Figure 11 As shown, in some embodiments, the heat exchange duct 212 has a cold air outlet 212c that supplies air to the oil filter 220, and a cold air switch 280 for opening or closing the cold air outlet 212c is provided at the cold air outlet 212c. By providing the cold air outlet 212c and the cold air switch 280, the cold air supplied by the heat exchange duct 212 can be blown towards the oil filter 220 under the guidance of the cold air switch 280 to condense the oil on the oil filter 220, so that the hot oil fumes can be condensed quickly. When the range hood main unit 200 is performing fume extraction, by opening the cold air switch 280, the low-temperature airflow is directed to the oil filter 220, which reduces the temperature of the oil filter 220 and improves the oil filtration effect of the oil filter 220.

[0152] In one specific embodiment of the present invention, a rotatable switch panel assembly 271 is provided on the second housing 210. The switch panel assembly 271 can be rotated to selectively cover or open the fume inlet 211a located on the front panel of the second housing 210. An oil filter element 220 is provided at the fume inlet 211a. The oil filter element can be constructed as a grille formed on the front panel of the second housing 210. The oil filter grille is formed with a plurality of elongated holes, which are constructed as the fume inlet 211a.

[0153] The switch panel assembly 271 is rotatably mounted on the front panel of the second housing 210. When the switch panel assembly 271 is flipped toward the front panel away from the second housing 210, the elongated hole can be exposed to improve the smoke extraction effect of the range hood main unit 200. The cold air outlet can be located inside or at the lower end of the switch panel assembly 271, and the cavity inside the switch panel assembly 271 can be configured as part of the heat exchange air duct 212. The cold air outlet 212c is located on the switch panel assembly 271. Inside 71, facing the front panel of the second housing 210, the cold air switch 280 is set at the cold air outlet and can be turned on and off. The cold air switch 280 is turned on after the switch panel assembly 271 is opened. After the cold air switch 280 is turned on, it can extend towards the front panel of the second housing 210 and can extend towards the oil filter 220. The cold air blown out from the cold air outlet can be blown towards the oil filter 220 under the guidance of the cold air switch 280 to improve the oil filtering effect of the oil filter 220.

[0154] In some embodiments, the cold air switch 280 is configured to guide heat exchange air to the oil filter 220 when the cold air outlet is opened. It should be noted that when the air conditioning unit 100 is cooling, the gas discharged after passing through the first heat exchange chamber 11 is low-temperature gas. After entering the heat exchange air duct 212, the low-temperature gas is blown towards the oil filter 220 under the guidance of the cold air switch 280, thereby using the low-temperature gas generated by the air conditioning unit 100 to accelerate the condensation of oil fumes and improve the oil filtration capacity of the range hood unit 200.

[0155] In some embodiments, the air conditioning unit 100 may also have a heating mode. The gas discharged after passing through the first heat exchange chamber 11 is high-temperature gas. After entering the heat exchange duct 212, the high-temperature gas is blown towards the oil filter 220 under the guidance of the cold air switch 280, so as to melt the oil stains on the oil filter 220 and facilitate the cleaning of the oil filter 220.

[0156] In one embodiment of the present invention, a cold air switch drive motor 281 is provided on the switch panel assembly 271 for driving the cold air switch 280 to rotate, and the output shaft of the cold air switch drive motor 281 is used to drive the cold air switch 280 to rotate in order to control the opening and closing of the cold air outlet 212c.

[0157] Optionally, the range hood main unit 200 is also equipped with an operation panel 273 for user convenience. Further optionally, the operation panel 273 is located on the front panel of the second housing 210. Of course, in some designs, it can also be located on the left or right side panel of the second housing 210, or even mounted as a separate component on the wall.

[0158] Alternatively, the range hood main unit 200 can be fixed to the wall via a second housing 210, for example, the back panel of the second housing 210 is provided with a wall-mounting plate for hanging on the wall.

[0159] like Figures 1-3 As shown, in some embodiments, the kitchen air conditioning system 1000 further includes a return air assembly 400, which is installed on the kitchen ceiling 800. Air in the kitchen flows through the return air assembly 400 to the first return air inlet 11a. The return air assembly 400 directs airflow from the kitchen into the ceiling 800, connecting the lower and upper parts of the ceiling 800. Airflow from the lower part of the ceiling 800 enters the upper part through the return air assembly 400. The first return air inlet 11a is open above the ceiling 800, allowing airflow from the upper part of the ceiling 800 to enter and exchange heat with the corresponding heat exchanger, thus achieving the cooling or heating function of the air conditioning unit 100. By installing the return air assembly 400 on the ceiling 800, the return air arrangement of the air conditioning unit 100 is simplified. In some designs, airflow from the upper part of the ceiling 800 can enter the second return air inlet 12a.

[0160] In some embodiments, such as Figure 16 and Figure 17 As shown, the return air assembly 400 includes a frame 410 and a panel grille 420. The frame 410 is adapted to be fixed to the kitchen ceiling 800, and the panel grille 420 is detachably installed on the frame 410. Return air assembly mounting holes can be provided in the ceiling 800, and the frame 410 can be fixed to these holes. The frame 410 serves as the mounting base for the panel grille 420, allowing the panel grille 420 to be detachably installed on it for easy cleaning and maintenance.

[0161] like Figure 16 and Figure 17As shown, the face frame 410 includes an outer frame portion 411, which is annular in shape. A connecting frame 412 is provided between the opposite sides of the outer frame portion 411, and a snap-fit ​​hole 413 extending through the thickness direction is provided on the connecting frame 412. The panel grille 420 includes a grille body, on which a hook portion 421 is rotatably provided. At least a portion of the hook portion 421 can pass through and engage with the snap-fit ​​hole 413 to achieve the connection between the panel grille 420 and the face frame 410. When it is necessary to remove the panel grille 420 from the face frame 410, the panel grille 420 can be separated from the face frame 410 by rotating the hook portion 421, making the removal of the panel grille 420 from the face frame 410 convenient.

[0162] In one specific embodiment of the present invention, two spaced-apart and parallel connecting skeletons 412 are provided on the face frame 410, and a corresponding snap-fit ​​hole 413 is provided on each connecting skeleton 412. Two snap hooks 421 are provided on the panel grille 420, and each snap hook 421 is directly opposite to the corresponding snap-fit ​​hole 413. The two snap hooks 421 rotate in opposite directions to facilitate the user to remove the panel grille 420 from the face frame 410 from the bottom.

[0163] In the description of this specification, references to the terms "embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A kitchen air conditioning system, characterized in that, include: An air conditioning unit includes a first casing, a first heat exchanger, and a second heat exchanger. The first casing defines a first heat exchange chamber and a second heat exchange chamber. The first heat exchanger is disposed in the first heat exchange chamber, and the second heat exchanger is disposed in the second heat exchange chamber. The first heat exchange chamber has a first return air vent and a first air outlet, and the second heat exchange chamber has a second return air vent and a second air outlet. The range hood main unit includes a second housing and an oil filter. The second housing is provided with an oil fume channel and a heat exchange air duct. The oil fume channel has an oil fume inlet and a flue outlet on the second housing. The oil filter is disposed in the oil fume channel. The heat exchange air duct has an air conditioning outlet and an air conditioning inlet on the second housing. The air conditioning inlet is connected to the first outlet through an air outlet pipe. An exhaust fan is provided, comprising: a fan housing, a suction exhaust impeller, and a heat exchange exhaust impeller. The fan housing has a first interface connected to the second air outlet, a second interface connected to the flue outlet, and a third interface connected to the exhaust pipe. When the suction exhaust impeller and the heat exchange exhaust impeller rotate, they both drive the airflow toward the third interface. The suction exhaust impeller and the heat exchange exhaust impeller are independent of each other, so that only one of the suction exhaust impeller and the heat exchange exhaust impeller can rotate or can rotate simultaneously. An air conditioning blower is provided in the first heat exchange chamber. When the air conditioning blower is running, it draws in air from the first return air inlet and blows the airflow out from the first air outlet.

2. The kitchen air conditioning system according to claim 1, characterized in that, Both the suction exhaust fan and the heat exchange exhaust fan are centrifugal fans, and the air inlet of the suction exhaust fan is positioned directly opposite the second interface.

3. The kitchen air conditioning system according to claim 2, characterized in that, The axes of the suction exhaust fan and the heat exchange exhaust fan are parallel to each other. The suction exhaust fan has a suction exhaust volute, and the heat exchange exhaust fan has a heat exchange exhaust volute.

4. The kitchen air conditioning system according to claim 2, characterized in that, The fan casing defines a spaced-apart mounting cavity and a mixing cavity. The first interface and the second interface are provided corresponding to the mounting cavity, and the third interface is provided corresponding to the mixing cavity. The suction exhaust fan and the heat exchange exhaust fan are both installed in the mounting cavity, and the air outlets of the suction exhaust fan and the heat exchange exhaust fan are both connected to the mixing cavity.

5. The kitchen air conditioning system according to claim 2, characterized in that, The first interface and the third interface are located on opposite sides of the fan casing, the second interface is located at the bottom of the fan casing, and the heat exchange exhaust fan draws air from above.

6. The kitchen air conditioning system according to claim 1, characterized in that, The first interface is provided with a first valve for opening or closing the first interface, and the second interface is provided with a second valve for opening or closing the second interface.

7. The kitchen air conditioning system according to claim 1, characterized in that, The air conditioning unit is adapted to be installed above the kitchen ceiling. The kitchen air conditioning system also includes a return air assembly, which is adapted to be installed on the kitchen ceiling. The air in the kitchen flows to the first return air vent through the return air assembly.

8. The kitchen air conditioning system according to claim 7, characterized in that, The return air assembly includes a frame and a panel grille, the frame being adapted to be fixed to the kitchen ceiling, and the panel grille being detachably mounted on the frame.

9. The kitchen air conditioning system according to claim 1, characterized in that, The air conditioning outlets are multiple, and the multiple air conditioning outlets are spaced apart on the second housing.

10. The kitchen air conditioning system according to claim 1, characterized in that, At least one of the air conditioning outlets is located on the front of the second housing and above the fume inlet.

11. The kitchen air conditioning system according to any one of claims 1-10, characterized in that, The heat exchange duct and the fume duct are arranged side by side.

12. The kitchen air conditioning system according to any one of claims 1-10, characterized in that, The heat exchange duct has a cold air outlet that supplies air toward the oil filter element, and a cold air switch is provided at the cold air outlet for turning it on or off.

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