Refrigeration type range hood

Abstract

A refrigeration type extractor hood comprises an oil smoke suction module, a compressor, a heat dissipation module and an inner machine module, the oil smoke suction module comprises an oil smoke suction fan, the heat dissipation module and the inner machine module are arranged outside the oil smoke suction fan, the oil smoke suction fan comprises a volute, an impeller and a volute tongue, and a ventilation opening is formed in the annular wall of the volute. An air outlet of a heat dissipation fan of the heat dissipation module is in fluid communication with the ventilation opening, an air guide cover plate used for guiding hot air blown out by the heat dissipation fan into the volute is installed at the ventilation opening, and the vertical distance between the edge, closest to the impeller, of the air guide cover plate and the peripheral face of the impeller is L1. The vertical distance L2 between the edge, closest to the impeller, of the volute tongue and the peripheral face of the impeller meets the requirement that L1-L2 is smaller than or equal to 6 mm. According to the refrigeration type extractor hood, hot air is sucked into the volute of the extractor hood through negative pressure generated by rotation of the draught fan of the extractor hood, the working efficiency of the cooling draught fan is improved, the hot air blown into the volute cleans oil stains on the inner wall of the volute, and meanwhile airflow in the volute of the draught fan cannot overflow from the ventilation opening.

Description

Technical Field

[0001] The invention relates to a range hood, in particular to a refrigeration type range hood. Background Art

[0002] Various refrigeration-type range hoods are disclosed in the prior art. An air conditioning component is added to the range hood platform. The compressor, condenser and evaporator are connected through a refrigerant pipeline. The refrigeration-type range hood can realize all the functions of the range hood and the function of the air conditioner. During the daily use of the refrigeration range hood, a large amount of grease will remain on the volute and impeller. After a long period of air drying and solidification, these grease will form a hard grease layer on the volute and impeller, which is very difficult to clean. Traditional range hoods on the market often do not have a cleaning function. Even if a cleaning function is added, it is simply to add a water pump and a heating rod to heat and spray the water added from the outside for cleaning. Additional components need to be added, which reduces the reliability of the whole machine. At the same time, it is necessary to add a water source from the outside, which increases the complexity. Although, in the prior art, there are also disclosed range hoods that use controlled condensed water to clean the volute, such as the "A Kind of Air-conditioning Range Hood" disclosed in the Chinese utility model patent with patent number 202220018984.6 (authorization announcement number CN 217004584 U), the range hood has a water collection box for collecting condensed water condensed on the surface of the evaporator, and a steam generator is installed inside the housing. The water collection box is connected to the water inlet of the steam generator through a water outlet pipe, and the steam outlet of the steam generator is connected to the air duct inside the range hood fan. The air-conditioning condensed water evaporates through the steam generator and enters the range hood fan, and the high-temperature water vapor passes through the fan impeller to clean the impeller. Although the air-conditioning range hood uses condensed water to clean the fan impeller, it is necessary to use the steam generator inside the housing to heat the condensed water, which is not only complicated in structure, but also increases the cost, and the heat generated by the condenser when the air conditioner is working is not effectively utilized. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a refrigeration range hood capable of effectively sucking the hot air blown out by the heat dissipation fan into the volute to clean the volute in view of the above-mentioned existing technical status.

[0004] The technical solution adopted by the present invention to solve the above technical problems is as follows: the refrigeration type range hood comprises a range hood module, a compressor, a heat dissipation module and an indoor module, the range hood module comprises a range hood fan, the compressor, the heat dissipation module and the indoor module are connected through a refrigerant pipeline, the heat dissipation module and the indoor module are arranged outside the range hood fan, the range hood fan comprises a volute, an impeller and a volute tongue installed on the volute ring wall and close to the fan air outlet, characterized in that: a vent is opened on the volute ring wall of the range hood fan, the heat dissipation module has a heat dissipation fan, the air outlet of the heat dissipation fan is fluidly connected with the vent, and an air guide cover plate for guiding hot air blown out by the heat dissipation fan into the interior of the volute is installed at the vent, the vertical distance between the edge of the air 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 |L1-L2|≤6mm is satisfied.

[0005] Preferably, the vent is opened at the front section of the volute ring wall and close to the root of the volute tongue, and the air guide cover is installed at the front edge of the vent. Providing the vent at the above position can make the hot air blown out by the heat dissipation module enter the volute more smoothly, and at the same time, when there is back pressure at the fan outlet, it can prevent the wind inside the volute from overflowing from the vent.

[0006] The air guide cover plate can have a variety of structures. Preferably, the air guide cover plate includes a mounting portion and a guide plate, wherein the mounting portion is mounted on the front edge of the vent, and the guide plate extends from the mounting portion in a direction away from the volute tongue. Such a configuration can enable the guide plate to play an effective role in guiding air.

[0007] In order to install the air guide cover between the range hood fan and the heat dissipation fan, preferably, the installation portion has a tiger's mouth, the front edge of the vent is arranged in the tiger's mouth, and the upper edge of the tiger's 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 edge of the vent 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 guide plate are located on the same concentric circle of the impeller, the lower edge of the tiger's mouth intersects with the volute ring wall at point O, the angle between the tangent of the volute ring wall passing through point O and the guide plate is A, and the length of the guide plate is B, then B increases as A decreases, and B decreases as A increases.

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

[0011] In order to enable the guide plate to guide the airflow and reduce aerodynamic noise, a concave-convex structure is formed on the edge of the guide plate facing the vent.

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

[0013] In order to make the airflow blown out by the heat dissipation fan enter the interior of the range fumes exhaust fan more smoothly, the range fumes exhaust fan and the heat dissipation fan are both centrifugal fans, and the central axis of the impeller of the range fumes exhaust fan is parallel to the central axis of the impeller of the heat dissipation fan.

[0014] Preferably, the fume extraction module comprises an upper box body and an air inlet body arranged at the bottom of the upper box body, the fume extraction fan is installed inside the upper box body, and the air inlet body is provided with a fume inlet connected to the air inlet of the fume extraction fan.

[0015] The compressor and the internal unit module may have a variety of installation structures. Preferably, the compressor is installed above the air inlet body and located on the left or right side of the upper box body, and the internal unit module is arranged above the compressor.

[0016] The heat dissipation module can have a variety of installation structures. Preferably, the heat dissipation module is arranged on the top of the upper box body, the heat dissipation fan is arranged above the range fumes fan, and the air outlet of the heat dissipation fan faces downward and toward the vent.

[0017] The heat dissipation module and the indoor unit module can have multiple installation structures. Preferably, the heat dissipation module includes a condenser and the heat dissipation fan, and the indoor unit module includes an evaporator and an indoor unit fan. The heat dissipation module and the indoor unit module are arranged adjacent to each other, and the heat dissipation module and the indoor unit module share an air inlet.

[0018] In order to allow cold air to be blown out through the indoor air outlet, an indoor air outlet is opened on the upper box body or the air inlet body, and the air outlet of the indoor fan is fluidly connected with the indoor air outlet through an air guide channel.

[0019] Compared with the prior art, the advantages of the present invention are: the refrigeration type range hood is provided with a ventilation hole on the ring wall of the volute of the range hood fan, the air outlet of the heat dissipation fan is fluidly connected with the ventilation hole, and the vertical distance L1 between the edge of the air guide cover closest to the impeller and the outer peripheral surface of the impeller and the vertical distance L2 between the edge of the volute tongue closest to the impeller and the outer peripheral surface of the impeller are close to or equal, and satisfy |L1-L2|≤6mm, so that the wind blown out by the heat dissipation fan can smoothly enter the interior of the fan volute, and the negative pressure generated by the rotation of the range hood fan is used to suck the hot air into the range hood volute, thereby improving the working efficiency of the heat dissipation fan, and the hot air blown into the volute can clean the oil stains on the inner wall of the volute. At the same time, when there is back pressure at the range hood outlet, the airflow inside the fan volute will not overflow from the ventilation hole, and will not have an adverse effect on the range hood extraction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of a range hood according to an embodiment of the present invention;

[0021] Figure 2 is a side view of a range hood according to an embodiment of the present invention;

[0022] Figure 3 A connection diagram of an air conditioning assembly according to an embodiment of the present invention;

[0023] Figure 4 Schematic diagram of the installation structure of the air guide cover plate according to an embodiment of the present invention;

[0024] Figure 5 A schematic structural diagram of an air guide cover plate according to an embodiment of the present invention;

[0025] Figure 6 This is another schematic diagram of the installation structure of the air guide cover plate according to an embodiment of the present invention;

[0026] Figure 7 Schematic diagram of another installation structure of the air guide cover plate according to an embodiment of the present invention. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below with reference to the accompanying drawings.

[0028] like Figures 1 to 3As shown, the refrigeration range hood of this embodiment includes a range hood module 1, a compressor 2, a heat dissipation module 3 and an internal module 4. The range hood module 1 includes a range hood fan 11, an upper box body 12 and an air inlet body 13. The range hood fan 11 is installed inside the upper box body 12. The air inlet body 13 is installed at the bottom of the upper box body 12. The air inlet body 13 is provided with a smoke inlet connected to the air inlet of the range hood fan 11. The range hood 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 ring wall 115 and close to the fan outlet.

[0029] The compressor 2 is installed above the air inlet body 13 and is located on the right side of the upper box body 12, and the indoor unit module 4 is arranged above the compressor 2. The heat dissipation module 3 is arranged at the top of the upper box body 12, and the heat dissipation module 3 and the indoor unit module 4 are arranged adjacent to each other, and the heat dissipation module 3 and the indoor unit module 4 share the air inlet. The heat dissipation module 3 includes a condenser 32 and a heat dissipation fan 31, and the indoor unit module 4 includes an evaporator 42 and an indoor unit fan 41. The compressor 2, the condenser 32 and the evaporator 42 are connected through a refrigerant pipeline 5. The compressor 2, the condenser 32 and the evaporator 42 constitute an air conditioning component, and its specific working principle is the same as that of the existing air conditioner, which will not be described in detail here. An indoor unit air outlet 43 is opened at the upper part of the air inlet body 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 working in the cooling mode, cold air is blown out from the indoor unit air outlet 43 to improve the user's cooking experience.

[0030] The heat dissipation fan 31 of this embodiment is a centrifugal fan, and the central axis of the impeller of the heat dissipation fan 31 is parallel to the central axis of the impeller of the range fumes exhaust fan 11. A vent 114 is provided on the volute ring wall 115 of the range fumes exhaust fan 11, and the heat dissipation fan 31 is arranged above the range fumes exhaust fan 11, and the air outlet of the heat dissipation fan 31 faces downward and toward the vent 114, and the air outlet of the heat dissipation fan 31 is fluidically connected with the vent 114.

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

[0032] An air guide cover plate 6 is installed at the vent 114 , which can not only guide the hot air blown out by the heat dissipation fan 31 into the interior of the volute 111 , but also prevent the wind in the range hood volute 111 from overflowing outward through the vent 114 .

[0033] The air guide cover plate 6 of this embodiment includes a mounting portion 61 and a guide plate 62. The mounting portion 61 has a jaw 611. The front edge of the vent 114 is arranged in the jaw 611. The upper edge of the jaw 611 is mounted on the volute wall 311 of the heat dissipation fan 31, that is, the mounting portion 61 is mounted between the range hood fan 11 and the heat dissipation fan 31. The guide plate 62 extends backward from the mounting portion 61 in a direction away from the volute tongue 113. In order to guide the airflow and reduce the aerodynamic noise, a concave-convex structure 621 is formed on the edge of the guide plate 62 facing the vent 114. The concave-convex structure 621 is in a sawtooth shape or a sine wave shape, and can also be in other structural forms.

[0034] Assume that the vertical distance between the edge of the air guide cover plate 6 closest to the impeller 112 and the outer peripheral surface of the impeller 112 is L1, the vertical distance between the edge of the volute tongue 113 closest to the impeller 112 and the outer peripheral surface of the impeller 112 is L2, and L1 and L2 are close to or equal, such as satisfying |L1-L2|≤6mm, preferably L1=L2.

[0035] like Figure 7 As shown, the lower edge of the tiger's mouth 611 intersects with the volute ring wall 115 at point O, and 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, the noise of the range fumes exhaust fan 11 will increase and the user experience will decrease. If the angle A is too small, the airflow inside the volute 111 will easily overflow from the vent 114, affecting the range fumes exhaust effect. The angle A is generally between 10° and 50°. The length of the guide plate 62 is B, and the value of B is related to the angle A and the position of the vent 114 of the volute ring wall 115. The smaller the angle A is, the larger the size B should be to ensure that the vent 114 of the ring wall is negative pressure, and the hot air can be naturally sucked into the volute 11 from the vent 114 of the ring wall to clean the volute 11. On the contrary, based on the same volute, the closer the vent 114 is to the volute tongue 113, the greater the angle A is, and the smaller the value B is. The value of size B is generally between 10mm and 60mm, and the value of size B needs to be selected according to the actual state. In addition, the vertical distance between point O and the outer peripheral surface of the impeller 112 is C, and the value C increases as A decreases and decreases as A increases. Angle A1, value B1 and C1 are paired values. Angle A2 and value B2 are paired values. Among them, A1<A2, B1>B2.

[0036] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0037] The "fluid connection" referred to in the present invention refers to the spatial position relationship between two parts or parts, which are collectively referred to as the first part and the second part respectively below, that is, fluid gas, liquid or a mixture of the two can flow from the first part along the flow path or / and be transported to the second part. The first part and the second part can be directly connected, or the first part and the second part can be indirectly connected through at least one third party. The third party can be a fluid channel such as a pipe, channel, duct, guide member, hole, groove, etc., or it can be a chamber allowing fluid to flow through, or a combination of the above.

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), wherein the range hood module (1) comprises a range hood fan (11), the compressor (2), the heat dissipation module (3) and the indoor module (4) are connected via a refrigerant pipeline (5), the heat dissipation module (3) and the indoor module (4) are arranged outside the range hood fan (11), the range hood fan (11) comprises a volute (111), an impeller (112) and a volute tongue (113) mounted on a volute ring wall (115) and close to an air outlet of the fan, characterized in that: A vent (114) is provided on the volute ring wall (115) of the fume extractor fan (11); the heat dissipation module (3) comprises a heat dissipation fan (31); an air outlet of the heat dissipation fan (31) is fluidically connected to the vent (114); an air guide cover plate (6) is installed at the vent (114) for guiding hot air blown out by the heat dissipation fan (31) into the interior of the volute; the vertical distance between the edge of the air guide cover plate (6) closest to the impeller (112) and the outer peripheral surface of the impeller (112) is L1; the vertical distance between the edge of the volute tongue (113) closest to the impeller (112) and the outer peripheral surface of the impeller (112) is L2; ​​and |L1-L2|≤6mm.

2. The refrigeration type range hood according to claim 1, characterized in that: The ventilation opening (114) is provided at the front section of the volute ring wall (115) and close to the root of the volute tongue (113), and the air guide cover plate (6) is installed at the front side edge of the ventilation opening (114).

3. The refrigeration type range hood according to claim 2, characterized in that: The air guide cover plate (6) comprises a mounting portion (61) and a guide plate (62), wherein the mounting portion (61) is mounted on the front edge of the vent (114), and the guide plate (62) extends from the mounting portion (61) in a direction away from the volute tongue (113).

4. The refrigeration type range hood according to claim 3, characterized in that: The mounting portion (61) has a jaw (611), the front edge of the vent (114) is arranged in the jaw (611), and the upper edge of the jaw (611) is mounted on the volute wall (311) of the heat dissipation fan (31).

5. The refrigeration type range 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 edge of the ventilation opening (114) is an involute, and the involute gradually opens outward from the root of the volute tongue (113).

6. The refrigeration type range hood according to claim 4, characterized in that: The lower edge of the jaws (611) intersects the volute ring wall (115) at a 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 length of the guide plate (62) is B, then B increases as A decreases, and B decreases as A increases.

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

8. The refrigeration type range hood according to claim 3, characterized in that: A concave-convex structure (621) is formed on the edge of the guide plate (62) facing the vent (114).

9. The refrigeration type range hood according to claim 8, characterized in that: The concave-convex structure (621) is in a sawtooth shape or a sine wave shape.

10. The refrigeration type range hood according to claim 1, characterized in that: The oil fume suction fan (11) and the heat dissipation fan (31) are both centrifugal fans, and the central axis of the impeller of the oil fume suction fan (11) and the central axis of the impeller of the heat dissipation fan (31) are parallel to each other.

11. The refrigeration type range hood according to any one of claims 1 to 10, characterized in that: The oil fume extraction module (1) comprises an upper box body (12) and an air inlet body (13) arranged at the bottom of the upper box body (12); the oil fume extraction fan (11) is installed inside the upper box body (12); and the air inlet body (13) is provided with an air inlet port connected to the air inlet port of the oil fume extraction fan (11).

12. The refrigeration type range hood according to claim 11, characterized in that: The compressor (2) is installed above the air inlet body (13) and is located on the left or right side of the upper box body (12), and the internal unit module (4) is arranged above the compressor (2).

13. The refrigeration type range hood according to claim 11, characterized in that: The heat dissipation module (3) is arranged on the top of the upper box body (12), the heat dissipation fan (31) is arranged above the range fumes exhaust fan (11), and the air outlet of the heat dissipation fan (31) faces downward and toward the ventilation port (114).

14. The refrigeration type range hood according to claim 13, characterized in that: The heat dissipation module (3) comprises a condenser (32) and a heat dissipation fan (31), and the indoor unit module (4) comprises an evaporator (42) and an indoor unit fan (41). The heat dissipation module (3) and the indoor unit module (4) are arranged adjacent to each other, and the heat dissipation module (3) and the indoor unit module (4) share an air inlet.

15. The refrigeration type range hood according to claim 14, characterized in that: An indoor air outlet (43) is provided on the upper box body (12) or the air inlet body (13), and an air outlet of the indoor fan (41) is fluidically connected to the indoor air outlet (43) via an air guide channel (44).

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