Air-conditioning type range hood

Abstract

An air conditioner type extractor hood is characterized in that a lampblack suction module, a compressor, a heat dissipation module and an inner unit module are installed in a machine shell, an air inlet channel is formed between an air inlet of a lampblack suction fan and a corresponding side plate of a fan frame, the heat dissipation module is arranged outside the lampblack suction fan, and an air guide piece is arranged in the air inlet channel; and an air outlet of the heat dissipation fan is in fluid communication with an air inlet of the oil smoke suction fan through an air guide piece. The refrigeration module has the advantages that when the refrigeration module of the air-conditioning type extractor hood works, hot air blown out by the heat dissipation fan enters the oil fume suction fan through the air guide piece and is prevented from being mixed with oil fume airflow outside the fan, the balance between the air volume of the heat dissipation fan and the air volume of the extractor hood is facilitated, the noise of the fan is reduced, and the service life of the fan is prolonged. The cooling effect of the cooling fan on the condenser is guaranteed, the performance of the oil fume suction fan can be guaranteed, the oil fume suction effect is guaranteed, in addition, after the air guide piece is adopted, oil fume can be effectively prevented from entering the condenser, the probability that the condenser is polluted by the oil fume is greatly reduced, and then the energy efficiency of the air conditioner is improved.

Description

Technical Field

[0001] This utility model relates to a range hood, and more particularly to an air-conditioning type range hood. Background Technology

[0002] Various refrigeration-type range hoods are disclosed in the prior art. These hoods add an air conditioning component to the existing range hood platform. The compressor, condenser, and evaporator are connected via refrigerant piping. The refrigeration-type range hood can perform all the functions of a range hood as well as the functions of an air conditioner. For example, the Chinese utility model patent with patent number 202122814657.X (authorization announcement number CN 216557289U) discloses an "Air Conditioning-Type Range Hood." This range hood has a damper installed at the outlet of the exhaust fan to switch between one of the first and second exhaust channels. The condenser is located in the first exhaust channel. This range hood adopts a dual-channel structure. The first exhaust channel forms a heat dissipation channel, and the second exhaust channel forms a direct exhaust channel. In different operating modes, by switching the damper, the fumes can be discharged from either the heat dissipation channel or the direct exhaust channel. The dual-channel structure is complex, with many components, and requires an oil fume purification device to be installed within the heat dissipation channel to prevent the condenser from being contaminated by oil fumes. Furthermore, the oil fumes need to make two 90° bends after entering the heat dissipation channel before being discharged, resulting in significant air resistance and affecting the smoke extraction efficiency.

[0003] For example, the Chinese utility model patent with patent number 202320059220.6 (authorization announcement number CN 219222570 U) discloses "A Refrigeration Range Hood". The refrigeration range hood's fume extraction module includes a fan frame and a fume extraction fan. An air conditioner outdoor unit module and an air conditioner indoor unit module are located outside the fan frame. The air conditioner outdoor unit module includes a heat dissipation cavity, a condenser, and a heat dissipation fan. The heat dissipation cavity is located outside the fan frame. The condenser is installed inside the heat dissipation cavity. The heat dissipation fan is located outside the heat dissipation cavity and installed on the top of the heat dissipation cavity. The air outlet of the heat dissipation fan faces the inside of the heat dissipation cavity. The heat dissipation cavity has a heat dissipation outlet that is connected to the air inlet of the fume extraction fan. Although the condenser heat of this cooling-type range hood enters the exhaust fan through the heat dissipation vent and is then carried away by the fan, and the condenser is located outside the exhaust duct, eliminating the need for a purification device and reducing cost and maintenance, the exhaust vent of the cooling fan is fluidly connected to the fan inlet via a heat dissipation vent on the fan frame. The air blown from the cooling fan exhaust vent can interfere with the airflow of cooking fumes at the fan inlet, thus affecting the fume extraction effect. In conclusion, further improvements are needed to the existing air-conditioning-type range hood. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an air-conditioning type range hood that avoids mutual interference between the heat dissipation airflow and the oil fume airflow before they enter the range hood, thereby reducing the impact of the heat dissipation airflow on the oil fume intake airflow, in light of the above-mentioned existing technology.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: an air-conditioning type range hood, including a casing, an oil fume extraction module, a compressor, a heat dissipation module and an indoor unit module are installed inside the casing. The oil fume extraction module includes a fan frame and an oil fume extraction fan installed inside the fan frame. An air intake channel is formed between the air inlet of the oil fume extraction fan and the corresponding side plate of the fan frame. The heat dissipation module includes a condenser and a heat dissipation fan. The indoor unit module has an evaporator and an indoor unit fan. The characteristic is that the heat dissipation module is located outside the oil fume extraction fan. An air guide is provided in the air intake channel. The air outlet of the heat dissipation fan is fluidly connected to the air inlet of the oil fume extraction fan through the air guide.

[0006] The air guide can have various structures. Preferably, the air guide is an air guide hood, with the air inlet of the air guide hood installed at the air outlet of the cooling fan, and the air outlet of the air guide hood facing the air inlet of the fume extractor.

[0007] In order to ensure that the cooling airflow from the air outlet of the air guide hood directly enters the interior of the range hood, the orthographic projection of the air outlet of the air guide hood onto the plane of the air inlet of the range hood falls entirely within the air inlet of the range hood.

[0008] Further preferably, the diameter of the air guide hood gradually widens from the air inlet to the air outlet. This design, as the outlet area of ​​the air guide hood gradually increases, reduces the outlet velocity of the cooling fan, increases static pressure, and reduces the impact on the air intake of the range hood, thereby reducing the impact on the smoke extraction effect and noise.

[0009] Further optimized, the air outlet area S1 of the air guide hood and the air inlet area S2 of the range hood satisfy 0.15≤S1 / S2≤1.5. When S1 is less than S2 / 2, turning on the air conditioner and range hood will affect the airflow of the cooling fan, thus affecting the performance of the air conditioner; when S1 is greater than S2 / 2, turning on the air conditioner and range hood will affect the airflow of the range hood, thus affecting the smoke extraction effect and noise. After testing, based on the requirements of cooling airflow and the airflow and noise of the range hood, 0.15≤S1 / S2≤1.5 is the preferred value.

[0010] As a preferred embodiment, the fume extractor is a centrifugal fan, with the impeller's central axis perpendicular to the front panel of the casing. The cooling fan is positioned above the fume extractor, with its outlet facing vertically downwards and towards the air inlet channel. The entire air guide hood is located above the impeller's central axis of the fume extractor.

[0011] Further optimization involves rotating the range hood left and right, causing the air outlet of the range hood to tilt upwards. An exhaust hood is installed at the exhaust outlet of the range hood. After the fan rotates, the installation position of the exhaust hood is lowered, and the length of the exhaust hood can be extended, thus making the transition between the exhaust hood and the fan outlet smoother, which helps to reduce wind resistance and noise. The maximum rotation angle of the range hood can be set to 60°.

[0012] The cooling fan and the air guide hood can also be installed in other different positions. Preferably, the fume extractor is a centrifugal fan, and the central axis of the impeller of the fume extractor is perpendicular to the front plate of the casing. The cooling fan is located on the left side of the fume extractor, and the air guide hood is located on the left side of the air inlet of the fume extractor. Alternatively, the cooling fan is located on the right side of the fume extractor, and the air guide hood is located on the right side of the air inlet of the fume extractor. Alternatively, the cooling fan is located on the upper left side of the fume extractor, and the air guide hood is located on the upper left side of the air inlet of the fume extractor. Alternatively, the cooling fan is located on the upper right side of the fume extractor, and the air guide hood is located on the upper right side of the air inlet of the fume extractor.

[0013] Further preferably, the range hood is a centrifugal fan with front and rear dual-side air intakes. The air intake channel includes a main air intake channel and an auxiliary air intake channel, and the air guide hood is located within the auxiliary air intake channel. This configuration, employing a dual-intake structure, ensures sufficient airflow from the range hood and helps reduce the impact of the cooling fan's airflow on the fume extraction effect.

[0014] More preferably, the main air intake channel is located on the front side of the fume extractor, and the auxiliary air intake channel is located on the rear side of the fume extractor; or the main air intake channel is located on the rear side of the fume extractor, and the auxiliary air intake channel is located on the front side of the fume extractor.

[0015] There are various types and installation directions for fume extraction fans. Preferably, the fume extraction fan is a centrifugal fan, and the plane where the air inlet of the fume extraction fan is located is a vertical plane.

[0016] As a preferred embodiment of any of the above schemes, the compressor, condenser, and evaporator are connected by a refrigerant pipeline, and a throttling device is installed on the refrigerant pipeline between the condenser and the evaporator.

[0017] Compared with the prior art, the advantages of this utility model are as follows: This air-conditioning type range hood places the heat dissipation module outside the range hood fan. The air outlet of the heat dissipation fan is connected to the air inlet of the range hood fan through the air guide. The hot air blown out by the heat dissipation fan enters the range hood fan through the air guide, avoiding mixing with the oil fume airflow outside the fan. This helps to achieve a balance between the air volume of the heat dissipation fan and the air volume of the range hood, reducing fan noise. It ensures both the heat dissipation effect of the heat dissipation fan on the condenser and the performance of the range hood fan, ensuring the oil fume extraction effect. In addition, the use of the air guide can effectively prevent oil fumes from entering the condenser, greatly reducing the probability of the condenser being contaminated by oil fumes, thereby improving the energy efficiency of the air conditioner. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the range hood according to an embodiment of the present utility model;

[0019] Figure 2 for Figure 1 The diagram shows the internal structure of the range hood.

[0020] Figure 3 for Figure 1 The diagram shows another internal structure of the range hood.

[0021] Figure 4 for Figure 3 The diagram shows the structure of the range hood from another angle;

[0022] Figure 5 for Figure 1 The diagram shows a cross-sectional view of the range hood.

[0023] Figure 6 This is a schematic diagram of the connection of the air conditioning components according to an embodiment of the present utility model;

[0024] Figure 7 This is a schematic diagram of the structure of the range hood according to Embodiment 2 of this utility model;

[0025] Figure 8 This is a schematic diagram of the structure of the range hood according to Embodiment 3 of this utility model;

[0026] Figure 9 This is a schematic diagram of the structure of the range hood according to Embodiment 4 of this utility model;

[0027] Figure 10 This is a structural schematic diagram of the range hood according to Embodiment 5 of this utility model. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] Example 1:

[0030] like Figures 1 to 6 As shown, the air-conditioning type range hood of this embodiment includes a casing 1. Inside the casing 1 are installed a fume extraction module 2, a compressor 3, a heat dissipation module 4, and an indoor unit module 5. The fume extraction module 2 includes a fan frame 21 and a fume extraction fan 22 installed inside the fan frame 21. An air intake channel 23 is formed between the air inlet of the fume extraction fan 22 and the corresponding side plate of the fan frame 21. The heat dissipation module 4 has a condenser 41 and a heat dissipation fan 42. The indoor unit module 5 has an evaporator 51 and an indoor unit fan 52. Both the heat dissipation module 4 and the indoor unit module 5 are located outside the fume extraction fan 22. The compressor 3, condenser 41, and evaporator 51 are connected via a refrigerant pipe 101. A throttling device 102 is installed on the refrigerant pipe 101 between the condenser 41 and the evaporator 51. Its refrigeration principle can be referred to in existing air conditioners and will not be described in detail here.

[0031] The compressor 3 can be installed on the left or right side of the range hood 22, so as to... Figure 2 The direction indicated by the middle arrow A is left. In this embodiment, the compressor 3 is installed on the left side of the range hood 22. The heat dissipation module 4 is located directly above the range hood 22, and the indoor unit module 5 is located on the upper left side of the range hood 22. Alternatively, the heat dissipation module 4 can also be installed on the left or right side of the range hood 22; that is, the heat dissipation module 4 and the compressor 3 can be respectively located on the left and right sides of the range hood 22.

[0032] In this embodiment, the fume extractor 22 is a centrifugal fan with front and rear dual-sided air intake. The air intake channel 23 includes a main air intake channel 231 and an auxiliary air intake channel 232. The plane where the air intake of the fume extractor 22 is located is a vertical plane. Specifically, the central axis of the impeller of the fume extractor 22 is perpendicular to the front plate of the casing 1. The main air intake channel 231 is located on the rear side of the fume extractor 22, and the auxiliary air intake channel 232 is located on the front side of the fume extractor 22. Alternatively, the main air intake channel 231 can be located on the front side of the fume extractor 22, and the auxiliary air intake channel 232 can be located on the rear side of the fume extractor 22. If a single-intake structure fume extractor is used, there is only one air intake channel 23, and the air outlet of the cooling fan 42 is connected to this air intake channel 23.

[0033] The range hood in this embodiment includes an upper housing 11 and an air inlet 12. The front-to-back depth of the upper housing 11 is greater than the front-to-back depth of the air inlet 12. A fan frame 21 and a range hood fan 22 are located inside the upper housing 11. An inlet smoke channel 121 is formed inside the air inlet 12, which is fluidly connected to an air inlet channel 23. Oil fumes enter the air inlet channel 23 of the upper housing 11 through the inlet smoke channel 121 of the air inlet 12, and are finally discharged outwards by the range hood fan 22. Furthermore, the main air inlet channel 231 is located directly above the inlet smoke channel 121, and both have similar front-to-back widths, forming a direct exhaust channel for oil fumes, resulting in better fume extraction and reduced noise. In addition, to further reduce the noise of the range hood during operation, noise reduction devices (not shown in the figure) can be installed in the inlet smoke channel 121 and the air inlet channel 23. These noise reduction devices can be sound-absorbing cotton or other different noise reduction structures.

[0034] In this embodiment, the range hood 22 rotates left and right, causing the air outlet of the range hood 22 to tilt upwards and to the right. An air outlet hood 24 is installed at the air outlet of the range hood 22, with the air outlet of the hood 24 pointing vertically upwards. Figure 3 As can be seen, the air outlet of the exhaust hood 24 is located at the upper right of the range hood 22, which frees up space directly above the range hood 22 to install the heat dissipation module 4, and frees up space at the upper left of the range hood 22 to install the indoor unit module 5. That is, the heat dissipation module 4 is located between the indoor unit module 5 and the exhaust hood 24. The maximum rotation angle of the range hood 22 is 60°, and in this embodiment, the rotation angle is about 40°. After the range hood 22 rotates a certain angle, the installation position of the exhaust hood 24 is lowered, and the length of the exhaust hood 24 can be lengthened, thereby making the transition between the exhaust hood 24 and the air outlet of the fan smoother, which helps to reduce wind resistance and noise.

[0035] For centrifugal fans that are not rotated, some of the oily fumes drawn in from the inlet will rise to the top of the fan and then fall back into the volute through the volute tongue. Because the static pressure at the volute tongue is high, this airflow interferes with the airflow diverted at the volute tongue within the volute, resulting in turbulent airflow and higher noise levels in the volute tongue area. However, when the exhaust fan rotates to a certain angle, the lower position of the volute tongue means that the upward-flowing fumes return to the volute tongue at a point further away from the volute tongue, resulting in a lower wind speed, smoother airflow, and reduced noise.

[0036] An air guide is provided within the auxiliary air intake channel 232. In this embodiment, the air guide is an air guide shroud 6. The air inlet of the air guide shroud 6 is installed at the air outlet of the cooling fan 42, and the air outlet of the air guide shroud 6 faces the air inlet of the range hood 22. The air outlet of the cooling fan 42 is in fluid communication with the air inlet of the range hood 22 through the air guide shroud 6. Furthermore, the orthographic projection of the air outlet of the air guide shroud 6 onto the plane of the range hood air inlet falls entirely within the air inlet of the range hood 22. This arrangement allows the cooling airflow from the air outlet of the air guide shroud to directly enter the interior of the range hood. Of course, in addition to using the air guide shroud 6, other air guides with different structures can also be used.

[0037] In this embodiment, the diameter of the air guide hood 6 gradually opens from the air inlet to the air outlet. As the outlet area of ​​the air guide hood 6 gradually increases, the outlet speed of the cooling fan 42 can be reduced, the static pressure can be increased, and the impact on the air intake of the range hood can be reduced, thereby reducing the impact on the smoke extraction effect and noise.

[0038] The air outlet area S1 of the air guide hood 6 and the air inlet area S2 of the range hood satisfy 0.15≤S1 / S2≤1.5. When S1 is less than S2 / 2, turning on the air conditioner and range hood will affect the airflow of the cooling fan, thus affecting the performance of the air conditioner; when S1 is greater than S2 / 2, turning on the air conditioner and range hood will affect the airflow of the range hood, thus affecting the smoke extraction effect and noise. After testing, based on the requirements of cooling airflow and the airflow and noise of the range hood, 0.15≤S1 / S2≤1.5 is the preferred value.

[0039] like Figure 3 As shown, in this embodiment, the cooling fan 42 is located directly above the range hood 22, and the air outlet of the cooling fan 42 faces vertically downwards and towards the auxiliary air inlet channel 231. The air guide hood 6 is located entirely above the impeller central axis of the range hood 22. An air conditioning outlet is opened on the upper front of the casing 1. The air conditioning outlet is horizontally shaped, and the air outlet of the indoor unit fan 52 is fluidly connected to the air conditioning outlet through the air guide assembly 7. When operating in cooling mode, the cold air blown out by the indoor unit fan 52 is blown out through the air conditioner outlet; the cooling fan 42 dissipates heat from the condenser 41, and the hot air blown out by the cooling fan 42 directly enters the air inlet of the range hood 22 through the air guide 6; the fumes enter the air inlet channel 23 of the upper casing 11 through the smoke inlet channel 121 of the air inlet body 12, most of which enters the range hood 22 through the main air inlet channel 231, and a small part enters the range hood 22 through the auxiliary air inlet channel 232. The fumes will not interfere with the cooling airflow before entering the range hood 22.

[0040] An air outlet panel 8 is installed at the air conditioner's air outlet. An air guide structure 9 is installed on the air outlet panel 8 to adjust the air outlet angle. The air guide structure 9 can adjust the air outlet angle, directing the air conditioning air towards the cook or avoiding direct airflow. Users can adjust this manually or automatically as needed. Additionally, an air outlet duct (not shown in the diagram) can be connected to the air outlet of the indoor unit's fan 52. The air outlet duct is fluidly connected to the indoor kitchen space. The air conditioner's air outlet can be located in the kitchen ceiling or other locations within the kitchen. The air conditioning air passes through the air outlet duct and exits from the air outlet. The location of the air conditioner's air outlet is quite flexible, allowing users to choose according to their needs.

[0041] In this embodiment, the power board 10 is located at the lower right corner of the range hood 22. Since the compressor is located at the lower left corner of the range hood 22, the heat dissipation module 4 is located directly above the range hood 22, and the indoor unit module 5 is located at the upper left of the range hood 22, the range hood 22 isolates the power board 10 from the compressor 3 and heat exchange module that generate heat, thus preventing the heat generated by the compressor 3 and heat dissipation module 4 from having an adverse effect on the power board 10.

[0042] Example 2:

[0043] like Figure 7 As shown, in this embodiment, the heat dissipation module 4 of the range hood is located at the upper left of the range hood fan 22. The air guide hood 6 is located on the upper left side of the air inlet of the range hood fan 22. The air outlet of the heat dissipation fan 42 is arranged at an angle to the lower right and is connected to the air inlet of the range hood fan 22 through the air guide hood 6. In this embodiment, the indoor unit module 5 is located directly above the range hood fan 22, and the air outlet hood 24 is located on the right side of the indoor unit module 5. The remaining structure of this embodiment is the same as that of Embodiment 1, and will not be described further here.

[0044] Example 3:

[0045] like Figure 8 As shown, in this embodiment, the heat dissipation module 4 of the range hood is located on the left side of the range hood fan 22. The air guide hood 6 is located on the left side of the air inlet of the range hood fan 22. The air outlet of the heat dissipation fan 42 is directed to the right and connected to the air inlet of the range hood fan 22 through the air guide hood 6. In this embodiment, the indoor unit module 5 is located directly above the range hood fan 22, and the air outlet hood 24 is located on the right side of the indoor unit module 5. In addition, in this embodiment, the compressor 3 is located above the range hood fan 22 and to the left of the indoor unit module 5. Along the direction of the heat dissipation airflow, the compressor 3 is located upstream of the condenser 41 and the heat dissipation fan 42. The heat dissipation air dissipates heat from the compressor 3 before passing through the condenser 41 to improve its operational reliability. The power board 10 is located at the lower right corner of the range hood fan 22 to prevent the heat from the compressor 3 and the heat dissipation module from affecting the power board 10. The remaining structures of this embodiment are the same as those of Embodiment 1, and will not be described further here.

[0046] Example 4:

[0047] like Figure 9 As shown, compared with Embodiment 3, the positions of the compressor 3 and the power board 10 are interchanged in this embodiment. That is, the compressor 3 is located at the lower right corner of the range hood 22, and the power board 10 is located at the upper left corner of the range hood 22. Furthermore, along the flow direction of the heat dissipation airflow, the power board 10 is located upstream of the condenser 41 and the heat dissipation fan 42. The heat dissipation airflow first dissipates heat from the power board 10 before passing through the condenser 41, thereby improving its operational reliability.

[0048] Example 5:

[0049] like Figure 10 As shown, in this embodiment, the indoor unit module 5 is located to the left of the range hood 22, and the compressor 3 is located above the indoor unit module 5. The air conditioning outlet is located in the center of the front of the casing 1. The distance between the air outlet of the indoor unit fan 52 and the air conditioning outlet is relatively short, resulting in smoother airflow and reducing the height of the air conditioning outlet. The remaining structure of this embodiment is the same as that of Embodiment 1, and will not be described further here.

[0050] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0051] The term "fluid connectivity" as used in this utility model refers to the spatial relationship between two components or parts, collectively referred to as the first part and the second part, meaning that a fluid, gas, liquid, or a mixture of both can flow from the first part along a flow path and / or be transported to the second part. This can be a direct connection between the first part and the second part, or an indirect connection between the first part and the second part through at least one third party. This third party can be a fluid channel such as a pipe, channel, conduit, flow guide, hole, or groove, or a chamber or combination thereof that allows fluid to flow through.

Claims

1. An air-conditioning type range hood, comprising a housing (1), wherein a fume extraction module (2), a compressor (3), a heat dissipation module (4), and an indoor unit module (5) are installed inside the housing (1), the fume extraction module (2) comprising a fan frame (21) and a fume extraction fan (22) installed inside the fan frame (21), wherein an air inlet of the fume extraction fan (22) and a corresponding side plate of the fan frame (21) form an air inlet channel (23), the heat dissipation module (4) comprising a condenser (41) and a heat dissipation fan (42), and the indoor unit module (5) comprising an evaporator (51) and an indoor unit fan (52), characterized in that: The heat dissipation module (4) is located outside the fume extractor (22), and the air inlet channel (23) is provided with an air guide. The air outlet of the heat dissipation fan (42) is in fluid communication with the air inlet of the fume extractor (22) through the air guide.

2. The air-conditioning type range hood according to claim 1, characterized in that: The air guide is an air guide hood (6), the air inlet of which is installed at the air outlet of the cooling fan (42), and the air outlet of the air guide hood (6) faces the air inlet of the fume extractor (22).

3. The air-conditioning type range hood according to claim 2, characterized in that: The orthographic projection of the air outlet of the air guide hood (6) onto the plane where the air inlet of the fume extractor is located falls entirely within the air inlet of the fume extractor (22).

4. The air-conditioning type range hood according to claim 2, characterized in that: The diameter of the air guide shroud (6) gradually opens from the air inlet to the air outlet.

5. The air-conditioning type range hood according to claim 2, characterized in that: The air outlet area S1 of the air guide hood (6) and the air inlet area S2 of the oil fume fan satisfy 0.15≤S1 / S2≤1.

5.

6. The air-conditioning type range hood according to any one of claims 2 to 5, characterized in that: The fume extractor (22) is a centrifugal fan. The central axis of the impeller of the fume extractor (22) is perpendicular to the front plate of the casing (1). The cooling fan is located above the fume extractor. The air outlet of the cooling fan is vertically downward and faces the air inlet channel. The entire air guide hood is located above the central axis of the impeller of the fume extractor.

7. The air-conditioning type range hood according to claim 6, characterized in that: The exhaust fan (22) rotates left and right so that the exhaust direction of the exhaust fan (22) is tilted upward. An exhaust hood (24) is installed at the exhaust outlet of the exhaust fan (22).

8. The air-conditioning type range hood according to any one of claims 2 to 5, characterized in that: The fume extractor (22) is a centrifugal fan. The central axis of the impeller of the fume extractor (22) is perpendicular to the front plate of the casing (1). The cooling fan (42) is located on the left side of the fume extractor (22). The air guide hood (6) is located on the left side of the air inlet of the fume extractor (22). Alternatively, the cooling fan (42) is located on the right side of the fume extractor (22) and the air guide hood (6) is located on the right side of the air inlet of the fume extractor. Alternatively, the cooling fan (42) is located on the upper left side of the fume extractor (22) and the air guide hood (6) is located on the upper left side of the air inlet of the fume extractor (22). Alternatively, the cooling fan (42) is located on the upper right side of the fume extractor (22) and the air guide hood (6) is located on the upper right side of the air inlet of the fume extractor (22).

9. The air-conditioning type range hood according to any one of claims 2 to 5, characterized in that: The fume extractor (22) is a centrifugal fan with air intake on both the front and rear sides. The air intake channel (23) includes a main air intake channel (231) and an auxiliary air intake channel (232). The air guide hood (6) is located in the auxiliary air intake channel (232).

10. The air-conditioning type range hood according to claim 9, characterized in that: The main air intake channel (231) is located on the front side of the fume extractor (22), and the auxiliary air intake channel (232) is located on the rear side of the fume extractor (22). Alternatively, the main air intake channel (231) is located on the rear side of the fume extractor (22), and the auxiliary air intake channel (232) is located on the front side of the fume extractor (22).

11. The air-conditioning type range hood according to claim 1, characterized in that: The fume extractor (22) is a centrifugal fan, and the plane where the air inlet of the fume extractor (22) is located is a vertical plane.

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