Refrigerated range hood

Abstract

A kind of refrigeration range hood, including range hood module, compressor, heat dissipation module and inner machine module, range hood module includes range hood fan, heat dissipation module and inner machine module are arranged outside range hood fan, range hood fan includes volute, impeller and volute tongue, air vent is opened on the ring wall of volute, the air outlet of heat dissipation fan of heat dissipation module and air vent are in fluid communication, install the air guide cover plate for guiding the hot air blown by heat dissipation fan into the inside of volute at air vent, the vertical distance between the edge of air guide cover plate closest to impeller and the outer peripheral surface of impeller is L1, the vertical distance between the edge of volute tongue closest to impeller and the outer peripheral surface of impeller is L2 satisfy |L1-L2|≤6mm.The refrigeration range hood utilizes the negative pressure generated by the rotation of range hood fan to suck hot air into range hood volute, improves the working efficiency of heat dissipation fan, the hot air blown into volute cleans the oil dirt on the inner wall of volute, simultaneously, the airflow in the inside of fan volute cannot overflow from air vent.

Description

TECHNICAL FIELD

[0001] The present application relates to a range hood, in particular to a refrigeration type range hood. BACKGROUND

[0002] Various refrigeration type range hoods are disclosed in the prior art, which add air conditioning components to the range hood platform, and the compressor, condenser and evaporator are connected through refrigerant pipelines. The refrigeration type range hood can realize all the functions of the range hood and the functions of the air conditioner. During daily use, a large amount of oil dirt will be left on the volute and impeller of the refrigeration range hood. After a long time of air drying and solidification, a hard grease layer will be formed on the volute and impeller, which is very difficult to clean. The traditional range hoods on the market often do not have a cleaning function. Even if the cleaning function is added, it is only to simply add a water pump and a heating rod to heat and spray the added water from the outside for cleaning, which requires additional components, reduces the reliability of the whole machine, and increases the complexity of adding water from the outside. Although the prior art also discloses a range hood that uses control condensate water to clean the volute, such as the Chinese utility model patent with the patent number 202220018984.6 (the authorized announcement number is CN 217004584 U) which discloses an air conditioning type range hood. The machine shell of the range hood is provided with a water collecting box for collecting condensate water on the surface of the evaporator. A steam generator is installed inside the machine shell. The water collecting box is connected to the water inlet of the steam generator through the water outlet pipe. The steam outlet of the steam generator is connected to the air duct inside the range hood. The air conditioning condensate water is evaporated by the steam generator and enters the inside of the range hood. The high-temperature water vapor passes through the fan impeller to clean the impeller. Although the air conditioning type range hood uses condensate water to clean the fan impeller, it needs to use the steam generator inside the machine shell to heat the condensate water, which not only has a complex structure, but also increases the cost. The heat generated by the condenser during the operation of the air conditioner is not effectively utilized. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a refrigeration type range hood that can effectively absorb the hot air blown by the heat dissipation fan into the volute to clean the volute.

[0004] The refrigeration type range hood comprises a smoke suction module, a compressor, a heat dissipation module and an indoor machine module, the smoke suction module comprises a smoke suction fan, the compressor, the heat dissipation module and the indoor machine module are connected through a refrigerant pipeline, the heat dissipation module and the indoor machine module are arranged outside the smoke suction fan, the smoke suction fan comprises a volute, an impeller and a volute tongue which is installed on the ring wall of the volute and is close to the air outlet of the fan, and the volute ring wall is provided with a ventilation opening, the heat dissipation module is provided with a heat dissipation fan, the air outlet of the heat dissipation fan is in fluid communication with the ventilation opening, a wind guide cover plate is arranged at the ventilation opening and is used for guiding the hot air blown by the heat dissipation fan into the volute, the vertical distance between the edge of the wind guide cover plate closest to the impeller and the outer peripheral surface of the impeller is L1, the vertical distance between the edge of the volute tongue closest to the impeller and the outer peripheral surface of the impeller is L2, and the following condition is met: |L1-L2|≤6mm.

[0005] Preferably, the ventilation opening is arranged at the front section of the volute ring wall and is close to the root of the volute tongue, and the wind guide cover plate is installed on the front side edge of the ventilation opening. By arranging the ventilation opening at the above position, the hot air blown by the heat dissipation module can enter the volute more smoothly, and meanwhile, when there is back pressure at the air outlet of the fan, the overflow of the air in the volute through the ventilation opening can be avoided.

[0006] The wind guide cover plate can have various structures, and preferably, the wind guide cover plate comprises a mounting portion and a flow guide plate, the mounting portion is installed on the front side edge of the ventilation opening, and the flow guide plate extends away from the volute tongue from the mounting portion. In this way, the flow guide plate can effectively guide the air flow.

[0007] In order to install the wind guide cover plate between the smoke suction fan and the heat dissipation fan, preferably, the mounting portion has a tiger mouth, the front side edge of the ventilation opening is arranged in the tiger mouth, and the upper edge of the tiger mouth is installed on the volute ring wall of the heat dissipation fan.

[0008] Further preferably, the profile of the volute ring wall between the root of the volute tongue and the front side edge of the ventilation opening is an involute, and the involute gradually opens outward from the root of the volute tongue.

[0009] In order to ensure that the lowest point of the volute tongue and the lowest point of the flow guide plate are located on the same concentric circle of the impeller, the lower edge of the tiger mouth intersects with the volute ring wall at point O, the included angle between the tangent of the volute ring wall passing through point O and the flow guide plate is A, the length of the flow guide plate is B, B increases with the decrease of A and decreases with the increase of A.

[0010] Further preferably, the vertical distance between point O and the outer peripheral surface of the impeller is C, and C increases with the decrease of A and decreases with the increase of A.

[0011] In order to make the guide plate play the role of guiding airflow and reducing aerodynamic noise, the guide plate is formed with a concave-convex structure towards the edge of the air vent.

[0012] The concave-convex structure can have various forms, preferably, the concave-convex structure is in the shape of a sawtooth or a sine wave. In addition, the concave-convex structure is not limited to the above two shapes, and other shapes can also be adopted.

[0013] In order to make the airflow blown by the heat dissipation fan enter the inside of the range hood more smoothly, the range hood and the heat dissipation fan are both centrifugal fans, and the center shaft of the impeller of the range hood and the center shaft of the impeller of the heat dissipation fan are parallel to each other.

[0014] Preferably, the range hood module comprises an upper box body and an air inlet body arranged at the bottom of the upper box body, the range hood is installed inside the upper box body, and the air inlet body is provided with a smoke inlet which is in communication with the air inlet of the range hood.

[0015] The compressor and the indoor unit module can have various installation structures, preferably, the compressor is installed above the air inlet body and located at the left side or the right side of the upper box body, and the indoor unit module is arranged above the compressor.

[0016] The heat dissipation module can have various installation structures, preferably, the heat dissipation module is arranged at the top of the upper box body, the heat dissipation fan is arranged above the range hood, and the air outlet of the heat dissipation fan faces downward and towards the air vent.

[0017] The heat dissipation module and the indoor unit module can have various installation structures, preferably, the heat dissipation module comprises a condenser and the heat dissipation fan, the indoor unit module comprises an evaporator and an indoor fan, the heat dissipation module and the indoor unit module are arranged adjacently, and the heat dissipation module and the indoor unit module share the air inlet.

[0018] In order to enable cold air to be blown out through the indoor air outlet, the indoor air outlet is formed on the upper box body or the air inlet body, and the air outlet of the indoor fan is in fluid communication with the indoor air outlet through an air guide channel.

[0019] Compared with the prior art, the advantage of the present application is that the refrigeration type range hood has the following advantages: the refrigeration type range hood has a venting opening formed on the volute ring wall of the range hood, the air outlet of the heat dissipation fan is in fluid communication with the venting opening, the vertical distance L1 between the edge of the guide cover plate closest to the impeller and the outer circumferential surface of the impeller is close to or equal to the vertical distance L2 between the edge of the volute closest to the impeller and the outer circumferential surface of the impeller, and the absolute value of the difference between L1 and L2 is less than or equal to 6 mm, so that the air blown by the heat dissipation fan can smoothly enter the inside of the fan volute, the hot air is sucked into the range hood volute by the negative pressure generated by the rotation of the range hood fan, the working efficiency of the heat dissipation fan is improved, the hot air blown into the volute can clean the oil stains on the inner wall of the volute, and in the case that there is back pressure at the outlet of the range hood, the airflow in the inside of the fan volute will not overflow from the venting opening, and will not have an adverse effect on the oil fume suction effect. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 Fig. 1 is a structural schematic view of a range hood according to an embodiment of the present application;

[0021] Figure 2 Fig. 2 is a side view of the range hood according to the embodiment of the present application;

[0022] Figure 3 Fig. 3 is a connection schematic view of an air conditioning assembly according to the embodiment of the present application;

[0023] Figure 4 Fig. 4 is a mounting structure schematic view of a guide cover plate according to the embodiment of the present application;

[0024] Figure 5 Fig. 5 is a structural schematic view of the guide cover plate according to the embodiment of the present application;

[0025] Figure 6 Fig. 6 is another mounting structure schematic view of the guide cover plate according to the embodiment of the present application;

[0026] Figure 7 Fig. 7 is another mounting structure schematic view of the guide cover plate according to the embodiment of the present application. DETAILED DESCRIPTION

[0027] The present application will be further described in detail below with reference to the embodiments of the drawings.

[0028] As Figures 1 to 3As shown, the refrigerated range hood of this embodiment includes a fume extraction module 1, a compressor 2, a heat dissipation module 3, and an indoor unit module 4. The fume extraction module 1 includes a fume extraction fan 11, an upper housing 12, and an air inlet 13. The fume extraction fan 11 is installed inside the upper housing 12, and the air inlet 13 is installed at the bottom of the upper housing 12. The air inlet 13 has a fume inlet that communicates with the air inlet of the fume extraction fan 11. The fume extraction fan 11 is a centrifugal fan, including a volute 111, an impeller 112, and a volute tongue 113. The volute tongue 113 is installed on the volute annular wall 115 and is close to the fan outlet.

[0029] The compressor 2 is installed above the air inlet 13 and on the right side of the upper casing 12, with the indoor unit module 4 located above the compressor 2. The heat dissipation module 3 is located at the top of the upper casing 12, and the heat dissipation module 3 and the indoor unit module 4 are arranged adjacent to each other, sharing an air inlet. The heat dissipation module 3 includes a condenser 32 and a cooling fan 31, while the indoor unit module 4 includes an evaporator 42 and an indoor unit fan 41. The compressor 2, condenser 32, and evaporator 42 are connected via refrigerant piping 5. The compressor 2, condenser 32, and evaporator 42 constitute an air conditioning assembly, and their specific working principle is the same as that of existing air conditioners, which will not be described in detail here. An indoor unit air outlet 43 is opened at the top of the air inlet 13, and the air outlet of the indoor unit fan 41 is fluidly connected to the indoor unit air outlet 43 through an air guide channel 44. When operating in cooling mode, cold air is blown out from the indoor unit air outlet 43, improving the user's cooking experience.

[0030] In this embodiment, the cooling fan 31 is a centrifugal fan, and the impeller central axis of the cooling fan 31 is parallel to the impeller central axis of the fume extraction fan 11. A vent 114 is opened on the volute annular wall 115 of the fume extraction fan 11. The cooling fan 31 is positioned above the fume extraction fan 11, with its outlet facing downwards and towards the vent 114. The outlet of the cooling fan 31 and the vent 114 are in fluid communication.

[0031] like Figures 4 to 7 As shown, in this embodiment, the vent 114 is located at the front section of the volute annular wall 115 and close to the root of the volute tongue 113. When there is back pressure at the outlet of the flue, the air inside the volute 111 will not overflow from the vent 114. The vent 114 should be located as close as possible to the front 1 / 4 of the annular wall, and as close as possible to the volute tongue 113. In this embodiment, the profile of the volute annular wall 115 between the root of the volute tongue 113 and the front edge of the vent 114 is an involute, which gradually widens outward from the root of the volute tongue 113.

[0032] A guide cover 6 is installed at the vent 114. The guide cover 6 can not only guide the hot air blown out by the cooling fan 31 into the volute 111, but also prevent the air inside the volute 111 from overflowing outward through the vent 114.

[0033] The air guide cover 6 in this embodiment includes a mounting part 61 and a guide plate 62. The mounting part 61 has a jaw 611, and the front edge of the vent 114 is located inside the jaw 611. The upper edge of the jaw 611 is mounted on the volute wall 311 of the cooling fan 31, that is, the mounting part 61 is mounted between the fume extractor 11 and the cooling fan 31. The guide plate 62 extends rearward from the mounting part 61 in a direction away from the volute tongue 113. In order to guide the airflow and reduce aerodynamic noise, the guide plate 62 has a concave-convex structure 621 formed on the edge of the vent 114. The concave-convex structure 621 is sawtooth-shaped or sinusoidal-shaped, or may be other structural forms.

[0034] Assume that the vertical distance between the edge of the air guide cover 6 closest to the impeller 112 and the outer circumferential surface of the impeller 112 is L1, and the vertical distance between the edge of the volute tongue 113 closest to the impeller 112 and the outer circumferential surface of the impeller 112 is L2, and satisfy that L1 and L2 are close to or equal. For example, if |L1-L2|≤6mm, it is preferable that L1=L2.

[0035] like Figure 7 As shown, the lower edge of the tiger's mouth 611 intersects the volute ring wall 115 at point O. The angle between the tangent of the volute ring wall 115 passing through point O and the guide plate 62 is A. The angle A should not be too large or too small. If the angle A is too large, it will increase the noise of the range hood 11 and reduce the user experience. If the angle A is too small, the airflow inside the volute 111 will easily overflow from the vent 114, affecting the smoke extraction effect. The angle A is generally between 10° and 50°. The length of the guide vane 62 is B. The value of B is related to the included angle A and the position of the vent 114 on the volute annular wall 115. The smaller the included angle A, the larger the value of B needs to be to ensure that there is negative pressure at the vent 114 on the annular wall, so that hot air can be naturally drawn into the volute 111 from the vent 114 to clean the volute 111. Conversely, for the same volute, the closer the vent 114 is to the volute tongue 113, the larger the included angle A needs to be to ensure that L1=L2, and the smaller the value of B needs to be. The value of B is generally between 10mm and 60mm and needs to be selected according to the actual situation. In addition, the vertical distance between point O and the outer circumference of the impeller 112 is C. The value of C increases as A decreases and decreases as A increases. The included angle A1, the value B1, and C1 are paired values. The included angle A2 and the value B2 are paired values. Where A1 < A2, B1 > B2.

[0036] The terms denoting orientation, such as "front", "back", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used in the specification and claims of this patent application to describe various example structural parts and elements of the present application, but are used herein only for the convenience of description and are determined based on the example orientation shown in the drawings. Since the embodiments disclosed in the present application can be arranged in different directions, these terms denoting orientation are only for illustration and should not be considered as limiting, such as "upper" and "lower" are not necessarily limited to the direction opposite or consistent with the direction of gravity.

[0037] The term "fluid communication" as used herein refers to the spatial relationship between two components or locations, collectively referred to as a first location and a second location, such that a fluid, gas, liquid, or mixture of the two, can flow or / and be transported from the first location to the second location along a flow path. The first location and the second location can be directly connected, or they can be indirectly connected through at least one third party, which can be a fluid passage such as a pipe, channel, conduit, flow guide, hole, groove, etc., or a chamber allowing fluid flow, or a combination thereof.

Claims

1. A refrigeration type range hood, comprising a range hood module (1), a compressor (2), a heat dissipation module (3) and an indoor module (4), the range hood module (1) comprising a range hood fan (11), the compressor (2), the heat dissipation module (3) and the indoor module (4) being connected through a refrigerant pipeline (5), the heat dissipation module (3) and the indoor module (4) being arranged outside the range hood fan (11), the range hood fan (11) comprising a volute (111), an impeller (112) and a volute tongue (113) mounted on a volute ring wall (115) and close to a fan air outlet, characterized in that: The oil fume extractor fan (11) has a volute ring wall (115) with a ventilation opening (114) formed therein, and the heat dissipation module (3) has a heat dissipation fan (31) with an air outlet in fluid communication with the ventilation opening (114). A wind guide cover plate (6) is arranged at the ventilation opening (114) to guide the hot air blown by the heat dissipation fan (31) into the volute. The vertical distance between the edge of the volute tongue (113) closest to the impeller (112) and the outer circumferential surface of the impeller (112) is L2, and the vertical distance between the edge of the wind guide cover plate (6) closest to the impeller (112) and the outer circumferential surface of the impeller (112) is L1, and the absolute value of the difference between L1 and L2 is less than or equal to 6 mm. The oil fume extractor fan (11) and the heat dissipation fan (31) are both centrifugal fans.

2. The refrigerated extractor hood according to claim 1, characterized in that: The ventilation opening (114) is formed in the front section of the volute ring wall (115) and is close to the root of the volute tongue (113). The wind guide cover plate (6) is arranged at the front side edge of the ventilation opening (114).

3. The refrigerated extractor hood according to claim 2, characterized in that: The wind guide cover plate (6) comprises a mounting portion (61) and a flow guide plate (62). The mounting portion (61) is arranged at the front side edge of the ventilation opening (114), and the flow guide plate (62) extends from the mounting portion (61) away from the volute tongue (113).

4. The refrigerated extractor hood according to claim 3, characterized in that: The mounting portion (61) has a tiger mouth (611), and the front side edge of the ventilation opening (114) is arranged in the tiger mouth (611). The upper edge of the tiger mouth (611) is arranged on the volute wall (311) of the heat dissipation fan (31).

5. The refrigerated extractor hood according to claim 4, characterized in that: The profile of the volute ring wall (115) between the root of the volute tongue (113) and the front side edge of the ventilation opening (114) is an involute, which gradually opens outward from the root of the volute tongue (113).

6. The refrigerated extractor hood according to claim 4, characterized in that: The lower edge of the tiger mouth (611) intersects with the volute ring wall (115) at point O. The included angle between the tangent line of the volute ring wall (115) passing through point O and the flow guide plate (62) is A. The length of the flow guide plate (62) is B. B increases as A decreases and decreases as A increases.

7. The refrigerated extractor hood according to claim 6, characterized in that: The vertical distance between point O and the outer circumferential surface of the impeller (112) is C. C increases as A decreases and decreases as A increases.

8. The refrigerated extractor hood according to claim 3, characterized in that: The edge of the flow guide plate (62) facing the ventilation opening (114) is formed with a concave-convex structure (621).

9. The refrigerated extractor hood according to claim 8, characterized in that: The concave-convex structure (621) is in a zigzag shape or a sine wave shape.

10. The refrigerated range hood according to claim 1, characterized in that: The central shaft of the impeller of the oil fume extractor fan (11) is parallel to the central shaft of the impeller of the heat dissipation fan (31).

11. The refrigerated extractor hood according to any of claims 1 to 10, characterized in that: The oil fume extractor module (1) comprises an upper cabinet (12) and an air inlet body (13) arranged at the bottom of the upper cabinet (12). The oil fume extractor fan (11) is arranged in the upper cabinet (12), and the air inlet body (13) has an oil inlet opening in communication with the air inlet opening of the oil fume extractor fan (11).

12. The refrigerated extractor hood according to claim 11, characterized in that: The compressor (2) is arranged above the air inlet body (13) and on the left side or the right side of the upper cabinet (12). The indoor unit module (4) is arranged above the compressor (2).

13. The refrigerated range hood according to claim 11, characterized in that: The heat dissipation module (3) is arranged on the top of the upper cabinet (12), the heat dissipation fan (31) is arranged above the oil smoke fan (11), and the air outlet of the heat dissipation fan (31) faces downward and is directed toward the air vent (114).

14. The refrigerated extractor hood according to claim 13, characterized in that: The heat dissipation module (3) comprises a condenser (32) and the heat dissipation fan (31), the inner machine module (4) comprises an evaporator (42) and an inner machine fan (41), the heat dissipation module (3) and the inner machine module (4) are arranged adjacently, and the heat dissipation module (3) and the inner machine module (4) share an air inlet.

15. The refrigerated extractor hood according to claim 14, characterized in that: An inner machine air outlet (43) is formed on the upper cabinet (12) or the air inlet body (13), and the air outlet of the inner machine fan (41) is in fluid communication with the inner machine air outlet (43) through an air guide channel (44).

Images