CN216409065U - Refrigerating device for range hood and range hood - Google Patents

Abstract

The application relates to the technical field of kitchen appliances, and discloses a refrigerating device for a range hood and the range hood. The refrigerating device includes: a housing defining an air duct having an air outlet and an air inlet; the semiconductor refrigeration module is arranged in the air duct and comprises a cold end module and a hot end module; the fan is arranged in the air duct, drives airflow to flow into the air duct from the air inlet, and flows out from the air outlet after exchanging heat with the cold end module; wherein, the sectional area of cold junction module and the through flow area phase-match in partial wind channel, the sectional area of cold junction module and the through flow area phase-match in the wind channel at its place have increased the area of contact of the air current in the wind channel with the cold junction module, further reduce the temperature of air current, finally make the air outlet outflow's in wind channel air current temperature lower, improved refrigerating plant's refrigeration effect, improved the experience of user when the kitchen cooks.

Description

Refrigerating device for range hood and range hood

Technical Field

The application relates to the technical field of kitchen appliances, for example to a refrigerating device for a cigarette machine and the cigarette machine.

Background

At present, current kitchen space is limited, when the kitchen cooks, can produce a large amount of heats, leads to the temperature rise in kitchen, makes the experience variation of user's culinary art, and the cigarette machine can be taken out a large amount of oil smoke that the culinary art produced, and the present application is very extensive, among the prior art, some cigarette machines are equipped with refrigerating plant for the cigarette machine still has refrigerated effect when the oil smoke pumping machine cooks, improves the experience of user when cooking.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

the existing refrigerating device for the range hood has limited refrigerating effect, and the refrigerating device cannot effectively cool down when the temperature of a kitchen is higher.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides a refrigerating device for a cigarette machine and the cigarette machine, which aim to solve the problems that the existing refrigerating device for the cigarette machine is limited in refrigerating effect and cannot be effectively cooled when the temperature of a kitchen is higher.

The embodiment of the present disclosure provides a refrigerating device for a range hood, the refrigerating device includes: a housing defining an air duct having an air outlet and an air inlet; the semiconductor refrigeration module is arranged in the air duct and comprises a cold end module and a hot end module; the fan is arranged in the air duct, drives airflow to flow into the air duct from the air inlet, exchanges heat with the cold end module after the airflow and flows out from the air outlet; the cross-sectional area of the cold end module is matched with the flow area of part of the air duct.

Optionally, the bottom wall of the air duct comprises: the first wall section is communicated with the air inlet at one end; a second wall section connected at one end to the other end of the first wall section; along the flowing direction of the airflow in the air duct, the flow area of the air duct where the first wall section is located is gradually increased; wherein the cold end module is disposed at the first wall section.

Optionally, the cold end module comprises a semiconductor refrigeration piece and a heat dissipation fin, and the heat dissipation fin is arranged at the cold end of the semiconductor refrigeration piece; the heat radiating fins are located on the first wall section, and the sectional area of the heat radiating fins is gradually increased along the flowing direction of the airflow in the air duct.

Optionally, the first wall section is inclined downwardly in the direction of flow of the airflow in the air duct.

Optionally, the hot end module comprises a semiconductor refrigeration piece and a heat dissipation device, and the heat dissipation device is arranged at the hot end of the semiconductor refrigeration piece; the heat dissipation device comprises a plurality of sub heat dissipation devices which are sequentially communicated end to end.

Optionally, the plurality of sub heat dissipation devices includes: the first sub-heat dissipation device is arranged at the hot end of the semiconductor refrigeration sheet; and the second sub-heat dissipation device is communicated with the first sub-heat dissipation device and is suitable for being arranged in the air duct of the range hood or outside the air duct of the range hood.

Optionally, the heat sink comprises a water-cooled heat sink.

Optionally, the air outlet is disposed on a top wall of the housing, or disposed on a side wall of the housing and inclined upward, and another end of the second wall section is communicated with the air outlet and lower than the air outlet, wherein the second wall section is inclined upward along a flow direction of the air flow in the air duct.

Optionally, the fan is disposed corresponding to the second wall section, wherein a cross section of the second wall section is arc-shaped, and the opening of the arc-shaped faces the fan.

Embodiments of the present disclosure also provide a cigarette making machine comprising a refrigeration device for a cigarette making machine as described in any of the above embodiments.

The refrigerating plant and the cigarette machine for cigarette machine that this disclosed embodiment provided can realize following technological effect:

refrigerating plant adopts the refrigeration of semiconductor refrigeration module, semiconductor refrigeration module does not need the refrigerant, but continuous operation, and the during operation does not have vibrations, the noise, long-life, the installation is easy, the sectional area of cold junction module and the through flow area phase-match in wind channel, the area of contact of the air current in the wind channel with the cold junction module has been increased, further reduce the temperature of air current, finally make the air temperature that the air outlet in wind channel flowed lower, refrigerating plant's refrigeration effect has been improved, user experience when the kitchen cooks has been improved.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

FIG. 1 is a schematic diagram of a refrigeration unit according to an embodiment of the present disclosure;

FIG. 2 is a schematic cross-sectional view of a refrigeration unit provided by an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of another refrigeration device provided by the embodiment of the present disclosure;

figure 4 is a schematic diagram of a structure of a cigarette machine provided by embodiments of the present disclosure.

Reference numerals:

10. a housing; 101. an air inlet; 102. an air outlet; 103. an air duct; 20. a semiconductor refrigeration module; 201. a semiconductor refrigeration sheet; 202. a heat dissipating fin; 203. a heat sink; 2031. a first sub heat sink; 2032. a second sub heat sink; 2033. a drive device; 30. a fan; 40. a bottom wall of the air duct; 401. a first wall segment; 402. a second wall segment; 403. a water outlet; 50. a refrigeration device; 60. a range hood; 601. a smoke exhaust duct; 6011. a first side wall; 6012. a second side wall; 602. an oil cup; 70. and (7) mounting the plate.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their examples and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more unless otherwise specified.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

With reference to fig. 1 to 4, the embodiment of the present disclosure provides a refrigeration device 50 for a range hood 60, where the refrigeration device 50 includes a housing 10, a semiconductor refrigeration module 20, and a fan 30, where the housing 10 defines an air duct 103, the air duct 103 is provided with an air inlet 101 and an air outlet 102, the semiconductor refrigeration module 20 and the fan 30 are both located in the air duct 103, and the fan 30 can drive an air flow to flow out from the air outlet 102 after flowing into the air duct 103 from the air inlet 101; semiconductor refrigeration module 20 includes hot junction module and cold junction module, and the air current in the wind channel 103 flows through the cold junction module to can with the heat transfer of cold junction module, along the flow direction of air current in the wind channel 103, cold junction module and fan 30 set gradually, perhaps, along the flow direction of air current in the wind channel 103, fan 30 and cold junction module set gradually.

The arrows in fig. 2 indicate the direction of flow of the air flow in the air duct 103.

In this embodiment, a refrigerating plant 50 for cigarette machine 60 refrigerates through semiconductor refrigeration module 20, semiconductor refrigeration module 20 does not need the refrigerant, but continuous operation, and the during operation does not have vibrations, the noise, long service life, the installation is easy, therefore, the space that semiconductor refrigeration took is less, can reduce the space that refrigerating plant 50 took, increase refrigerating plant 50's suitability, fan 30 during operation, drive airflow gets into wind channel 103 from air intake 101, then the air current flows out through air outlet 102, and the air current is when the cold junction module in wind channel 103, the cold junction module carries out the heat transfer with the air current, reduce the temperature of air current, make the air current become the cold air stream, the cold air stream flows out through air outlet 102, play the cooling effect to the kitchen.

Optionally, the cross-sectional area of the cold end module matches the flow area of the partial air duct 103, which can be understood as: the cold end module is located in the air duct 103, wherein the cross-sectional area of the cold end module matches the flow area of the cold end module in a portion of the air duct 103 in the air duct 103, so that the air flow in the air duct 103 can completely or mostly pass through the cold end module.

The sectional area of the cold end module is matched with the flow area of the partial air duct 103, which means that the change of the sectional area of the cold end module is consistent with the change of the flow area of the partial air duct 103 of the cold end module located in the air duct 103, for example, the change of the size, the shape and the like of the cold end module is consistent with the change of the flow area of the air duct 103.

The flow area in this application means that when gas flows in the air duct 103, a cross section thereof perpendicular to the flow direction is the flow area.

The cross-sectional area of the cold end module refers to the cross-sectional area of the cold end module in the direction of flow of the air stream within the air duct 103.

Optionally, the bottom wall 40 of the air duct 103 includes a first wall section 401 and a second wall section 402, one end of the first wall section 401 is communicated with the air inlet 101; the other end of the first wall section 401 is connected to one end of the second wall section 402, the flow area of the air duct 103 where the first wall section 401 is located is gradually increased along the flow direction of the air flow in the air duct 103, and the cold end module is disposed on the first wall section 401.

The gradually increasing flow area of the air duct 103 in which the first wall section 401 is located along the flow direction of the air flow in the air duct 103 means that the flow area of the portion of the air duct 103 in which the first wall section 401 is located gradually increases with the flow direction of the air flow.

The flow area of the air duct 103 is gradually increased along with the flowing direction of the air flow, the retention time of the air flow in the air duct 103 is increased, the contact time of the air flow and the cold end module is increased, and further the cooling effect of the air flow is improved, the sectional area of the cold end module is matched with the flow area of the air duct 103, the contact area of the air flow in the air duct 103 and the cold end module is increased, further the heat exchange efficiency of the air flow in the air duct 103 and the cold end module is increased, the temperature of the air flow in the air duct 103 is further reduced, and the refrigerating effect of the refrigerating device 50 is improved.

Optionally, the semiconductor cooling module 20 comprises a semiconductor cooling plate 201.

The operating principle of the semiconductor cooling plate 201 is the peltier effect, which means that when current passes through a loop formed by different conductors, the heat absorption and heat release phenomena will occur at the joints of the different conductors along with the difference of the current directions except for the generation of irreversible joule heat. Therefore, the semiconductor refrigeration piece 201 comprises a hot end and a cold end, wherein after the power supply is switched on, one end of the semiconductor refrigeration piece 201 generates electron-hole pairs, the internal energy is reduced, the temperature is reduced, and heat is absorbed to the outside, namely the cold end; the other end is called hot end because the electron hole pair is compounded, the internal energy is increased, the temperature is raised, and heat is released to the environment.

Optionally, the number of the semiconductor chilling plates 201 is multiple.

Optionally, as shown in fig. 2, the semiconductor refrigeration module 20 further includes heat dissipation fins 202, and the cold-end module includes the cold end of the semiconductor refrigeration sheet 201 and the heat dissipation fins 202; wherein, the heat dissipation fin 202 is arranged at the cold end of the semiconductor refrigeration sheet 201, and along the flowing direction of the airflow in the air duct 103, the heat dissipation fin 202 is arranged on the upper surface of the first wall section 401, and the sectional area of the heat dissipation fin 202 is gradually increased.

The cooling fin 202 is arranged at the cold end of the semiconductor refrigeration piece 201, the cold quantity of the cold end of the semiconductor refrigeration piece 201 can be diffused, the area of the cold quantity is increased, the airflow in the air duct 103 can be subjected to heat exchange with the cold quantity in a wider range, the sectional area of the cooling fin 202 is gradually increased along with the flowing direction of the airflow in the air duct 103, the sectional area of the cooling fin 202 is matched with the channel area of the air duct 103, the contact area of the cooling fin 202 and the airflow in the air duct 103 is increased, the heat exchange area of the airflow in the air duct 103 and the cooling fin 202 is increased, the cooling effect of the airflow is improved, and the refrigerating effect of the refrigerating device 50 is further increased.

Optionally, the heat dissipation fins 202 are aluminum heat dissipation fins 202.

Optionally, the first wall section 401 is inclined downwards in the direction of the flow of the air flow in the air duct 103.

The first wall section 401 of the bottom wall of the air duct 103 is inclined downward, on one hand, along the flowing direction of the air flow, the flow area of the air duct 103 is gradually increased, the structure is simple and easy to achieve, on the other hand, the air flow enters the air duct 103 through the air inlet 101 and flows along the first wall section 401, the first wall section 401 is inclined downward to guide the air flow, so that the air flow flows more smoothly in the air duct 103, the flowing path of the air flow in the air duct 103 is increased, and the retention time of the air flow in the air duct 103 is further increased.

Alternatively, the air inlet 101 is disposed on the top wall of the housing 10, which can be understood as: the air inlet 101 is located at the top of the cooling device 50, and air enters the air duct 103 from above and then flows in the air duct 103, so that the air flow is smoother.

Alternatively, the air inlet 101 may be provided in a side wall of the housing 10 and inclined upward, so that the first wall section 401 can be inclined downward in the flow direction of the air flow.

Optionally, cold end modules are provided at the upper surface of the first wall section 401.

Along the flow direction of the air flow in the air duct 103, the first wall section 401 is inclined downward, and the cold end module is disposed on the upper surface of the first wall section 401, which can be understood as: the cold end module is obliquely arranged, and the cold end module is close to the air inlet 101 in the arrangement mode, so that heat exchange can be timely carried out on the cold end module and airflow flowing into the air duct 103, the amount of cold airflow in the air duct 103 is increased, and the cooling effect of the airflow in the whole air duct 103 is increased.

Alternatively, the heat dissipation fins 202 are all disposed on the upper surface of the first wall section 401, i.e. the heat dissipation fins 202 are disposed obliquely.

During the operation of the cold end module, the outer surface of the heat dissipation fins 202 can produce condensed water, the heat dissipation fins 202 are arranged in an inclined mode, the condensed water can flow to the bottom along the inclined direction of the first wall section 401 and then is treated, and the problem of treating the condensed water is effectively solved.

Optionally, the second wall section 402 is inclined upwards in the flow direction of the air flow, and the bottom wall 40 of the air duct 103 is further provided with a water discharge opening 403, the water discharge opening 403 being provided at the junction of the first wall section 401 and the second wall section 402.

The connection between the first wall section 401 and the second wall section 402 is located at the lowest position of the first wall section 401, the drain opening 403 is also located at the lowest position of the first wall section 401, and when the condensate water of the heat dissipation fin 202 flows along the inclined direction of the first wall section 401, the condensate water can be discharged out of the air duct 103 through the drain opening 403.

Alternatively, when the air duct 103 is cleaned, water in the air duct 103 may be discharged through the water discharge opening 403, the first wall section 401 is inclined downward along the flow direction of the air flow, and the cleaned water may be discharged through the water discharge opening 403.

Alternatively, the drain opening 403 is provided with a switch, which can open or close the drain opening 403, when the air duct 103 needs to be cleaned, the drain opening 403 is closed to prevent water from flowing out, and after the cleaning is completed, the drain opening 403 is opened to drain the water.

Optionally, as shown in fig. 2 and fig. 3, the semiconductor refrigeration module 20 further includes a heat dissipation device 203, the hot side module includes a hot side of the semiconductor refrigeration sheet 201 and the heat dissipation device 203, and the heat dissipation device 203 is disposed at the hot side of the semiconductor refrigeration sheet 201; the heat sink 203 includes a plurality of sub-heat sinks connected end to end in sequence.

Semiconductor refrigeration piece 201 during operation, the cold junction of the refrigeration piece of semiconductor is used for refrigeration, and the hot junction of semiconductor refrigeration piece 201 needs the heat dissipation, hot junction at semiconductor refrigeration piece 201 sets up heat abstractor 203, can guarantee the normal work of semiconductor refrigeration piece 201, and then guarantee refrigerating plant 50's refrigeration effect, the sub heat abstractor that a plurality of heads and tails communicate in proper order, form multistage heat dissipation, dispel the heat to the hot junction of semiconductor refrigeration piece 201 through multistage heat dissipation, increase the radiating effect of heat abstractor 203 to the hot junction of semiconductor refrigeration piece 201, and then guarantee refrigerating plant 50's normal operating.

Optionally, the media in the plurality of sub-heat dissipation devices are circulated, so that the media can continue to exchange heat with the hot end of the semiconductor chilling plate 201 after heat dissipation.

Optionally, the number of the plurality of sub heat sinks is proportional to the heat of the hot end of the semiconductor chilling plate 201, or the number of the plurality of sub heat sinks is proportional to the number of the semiconductor chilling plate 201.

Optionally, the cooling device 50 further includes a driving device 2033, and the driving device 2033 is capable of driving the medium to flow in the plurality of heat sinks.

Optionally, the plurality of sub heat sinks include a first sub heat sink 2031 and a second sub heat sink 2032, the first sub heat sink 203 is disposed at the hot end of the semiconductor chilling plate 201; the second sub heat sink 2032 is in communication with the first sub heat sink 2031, and the heat dissipation area of the second sub heat sink 2032 is greater than or equal to the heat dissipation area of the first sub heat sink 2031.

The first sub heat sink 2031 and the hot end of the semiconductor chilling plate 201 are fixed in position, so that the installation position and size of the first sub heat sink 2031 are easily limited, in this case, the heat dissipation effect of the second sub heat sink 2032 is greater than or equal to the heat dissipation effect of the first sub heat sink 2031, and the heat dissipation effect of the medium in the heat sink 203 can be accelerated.

Optionally, the first sub-heat sink 2031 is attached to the hot end of the semiconductor chilling plate 201, which can be understood as follows: the first sub heat sink 2031 is attached to the hot end of the semiconductor chilling plate 201, or may be close to the hot end of the semiconductor chilling plate 201.

Optionally, the second sub heat sink 2032 is configured with a medium flow path communicated with the first sub heat sink 2031, the medium flow path includes a plurality of pipelines connected end to end in sequence, each pipeline includes a first pipeline, a second pipeline and a third pipeline, the first pipeline extends along the horizontal direction; the second pipeline is arranged opposite to the first pipeline; the third pipeline is connected between the outlet of the first pipeline and the inlet of the second pipeline.

The design of the multiple pipes increases the heat dissipation area of the second sub heat sink 2032, thereby increasing the heat dissipation effect of the second sub heat sink 2032.

Alternatively, as shown in fig. 3, the number of the second heat sink sub-devices 2032 may be plural, and the plural second heat sink sub-devices 2032 are communicated to cool the medium in the heat sink 203 for plural times.

Optionally, the heat sink 203 comprises a water-cooled heat sink.

Water is used as a medium in the heat dissipation device 203, so that on one hand, the water is low in cost, convenient to source and safe to use, and even if leaked, the water cannot cause harm to users; on the other hand, water can be used as a heat exchange medium to effectively exchange heat with the hot end of the semiconductor refrigeration sheet 201.

Alternatively, the first heat sink sub-assembly 2031 may be a water tank, and the second heat sink sub-assembly 2032 may be a heat sink.

Alternatively, as shown in fig. 3, the air outlet 102 is disposed on the top wall of the housing 10, or disposed on the side wall of the housing 10 and inclined upward, and the other end of the second wall section 402 is communicated with the air outlet 102 and is lower than the air outlet 102.

The air outlet 102 is arranged on the top wall of the casing 10 or on the side wall of the casing 10 and is inclined upwards, the other end of the second wall segment 402 is lower than the air outlet 102, so that the air in the air duct 103 can flow upwards and then reach the air outlet 102, the cooled air in the air duct 103 flows out through the air outlet 102, and the cooled air can flow downwards, thereby improving the refrigeration range of the refrigeration device 50, when the refrigeration device 50 is arranged on the range hood 60, the cooled air at the air outlet 102 can also form a cold air curtain, the hot air of the kitchen ware can be isolated, and the skin of a user can be protected from the influence of oil smoke.

The second wall section 402 is inclined upward in the flow direction of the air flow in the air duct 103, and since the air outlet 102 is provided on the top wall of the housing 10 or on the side wall of the housing 10 and is inclined upward, the second wall section 402 is inclined upward and can guide the air flow to flow out from the air outlet 102.

Optionally, the air inlet 101 of the air duct 103 is disposed on the top wall of the housing 10, and the air inlet 101 is provided with a filter screen.

Optionally, the refrigeration apparatus further includes a first cover plate connected to the housing 10, the first cover plate covers the air inlet 101 and is provided with an opening communicating with the air inlet 101 at a position of the first cover plate corresponding to the air inlet 101, wherein the first cover plate is movably connected to the housing 10.

Optionally, refrigerating plant still includes the filter screen, and first apron corresponds the opening part is located to filter screen detachably for filter the air inlet.

Optionally, the fan 30 is disposed corresponding to the second wall section 402, wherein the cross section of the second wall section 402 is arc-shaped, and the opening of the arc-shape faces the fan 30.

The cross section of the second wall section 402 is arc-shaped, so that the flow velocity of the airflow in the second wall section 402 can be slowed down, and the airflow can further gently flow out of the air outlet 102 under the drainage effect of the first wall section 401; the arc opening faces the fan 30, and the second wall section 402 can avoid the fan 30, so that the fan 30 can be conveniently installed.

Alternatively, the fan 30 may be a crossflow fan 30, a long barrel fan 30, or the like.

Optionally, the refrigeration module further includes a mounting plate 70, the second heat sink sub-assembly 2032 is disposed on the mounting plate 70, and the mounting plate 70 facilitates the mounting and fixing of the second heat sink sub-assembly 2032.

The disclosed embodiments also provide a cigarette maker 60 comprising a refrigeration unit 50 for a cigarette maker 60 of any of the above embodiments.

The cigarette making machine 60 provided by the embodiment of the present disclosure has all the advantages of the refrigeration device 50 for the cigarette making machine 60 in any one of the above embodiments because the refrigeration device 50 for the cigarette making machine 60 in any one of the above embodiments is included, and thus, the description is omitted.

Alternatively, the range hood 60 includes a cabinet defining a receiving cavity having an opening, with the refrigeration device 50 located within the receiving cavity.

Optionally, the distance between the air outlet 102 and the front end of the housing is smaller than the distance between the air outlet 102 and the rear end of the housing, so that the outlet air of the refrigeration device 50 faces the front side of the range hood 60, and the temperature of the user can be effectively reduced.

The range hood 60 further defines a smoke exhaust duct 601, a smoke exhaust fan 30 is arranged in the smoke exhaust duct 601, and the smoke exhaust fan 30 drives smoke to flow in the smoke exhaust duct 601.

The arrows in fig. 4 indicate the direction of flow of the air flow in the flue duct 601.

Optionally, the second heat dissipation module is disposed in the smoke evacuation duct 601 or located outside the smoke evacuation duct 601.

Optionally, the mounting plate 70 is disposed within the smoke evacuation duct 601; the side walls of the smoke evacuation duct 601 include a first side wall 6011 and a second side wall 6012; the second side wall 6012 is disposed opposite to the first side wall 6011, and the first side wall 6011 and the second side wall 6012 are located at both sides of the mounting plate 70; wherein, the distance from the mounting plate 70 to the first side wall 6011 is less than the distance from the mounting plate 70 to the second side wall 6012, and the second heat sink sub-assembly 2032 is disposed on the side of the mounting plate 70 facing the first side wall 6011.

The mounting plate 70 is used for installing the second heat sink 2032 in the smoke exhaust duct 601 or outside of the smoke exhaust duct 601, the heat dissipation of the second heat sink 2032 is facilitated, the second heat sink 203 is arranged near the first side wall 6011, the flow of smoke in the smoke exhaust duct 601 is not greatly affected, and the temperature of the first side wall 6011 of the smoke exhaust duct 601 is lower than the temperature at the center of the smoke exhaust duct 601, the second heat sink 2032 is arranged near the first side wall 6011, which is beneficial to the quick heat dissipation of the second heat sink 2032.

Optionally, the second sub-radiator 2032 is attached to the first side wall 6011, which can be understood as follows: the second heat sink sub-assembly 2032 may be attached to the first side wall 6011, or may be disposed close to the first side wall 6011.

Optionally, the range hood 60 further includes a smoke inlet chamber, the smoke inlet chamber is communicated with the smoke exhaust duct 601, wherein the chamber wall of the smoke inlet chamber includes a front panel and a rear panel, wherein the smoke suction port is disposed on the front panel, and the smoke generated during cooking of the kitchen ware can enter the smoke inlet chamber through the smoke suction port and then enter the smoke exhaust duct 601 to be exhausted.

Optionally, the smoke inlet cavity is arranged in the smoke exhaust duct 601 in a lifting manner, and can be understood as follows: the smoke inlet cavity can be contained in the smoke exhaust duct 601 or can extend out of the smoke exhaust duct 601.

In actual use, when the range hood 60 is in a shutdown state, the smoke inlet cavity rises into the smoke exhaust air channel 601, the space occupied by the range hood 60 can be saved, when the range hood 60 is started, the smoke inlet cavity descends and extends out of the lower side of the smoke exhaust air channel 601, the smoke suction port of the front panel is exposed, and the oil smoke generated by cooking can be sucked into the smoke inlet cavity.

Optionally, the range hood 60 further comprises an electric lifting device disposed in the smoke inlet chamber, and capable of controlling the smoke inlet chamber to lift in the smoke exhaust duct 601.

Optionally, the smoke inlet chamber is further provided with an oil cup 602, and the oil cup 602 is arranged at the lower end of the smoke inlet chamber.

Optionally, the oil cup 602 is communicated with the water outlet 403 through a water pipe, and water in the air duct 103 can be discharged into the oil cup 602 through the water outlet 403 and the water pipe, so as to be conveniently disposed.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A refrigeration unit for a range hood, comprising:

a housing defining an air duct having an air outlet and an air inlet;

the semiconductor refrigeration module is arranged in the air duct and comprises a cold end module and a hot end module;

the fan is arranged in the air duct and drives airflow to flow into the air duct from the air inlet and flow out from the air outlet after exchanging heat with the cold end module;

the cross-sectional area of the cold end module is matched with the flow area of part of the air duct.

2. A refrigeration unit for a machine as claimed in claim 1, wherein the bottom wall of the air duct comprises:

the first wall section is communicated with the air inlet at one end;

a second wall section connected at one end to the other end of the first wall section;

along the flowing direction of the airflow in the air duct, the flow area of the air duct where the first wall section is located is gradually increased;

wherein the cold end module is disposed at the first wall section.

3. A refrigeration unit for a machine as claimed in claim 2,

the cold end module comprises a cold end of the semiconductor refrigeration piece and radiating fins, and the radiating fins are arranged at the cold end of the semiconductor refrigeration piece;

the radiating fins are located on the upper surface of the first wall section, and the sectional area of the radiating fins is gradually increased along the flowing direction of the airflow in the air duct.

4. A refrigeration device for a machine as claimed in claim 2 or 3,

the first wall section is inclined downwardly in the direction of flow of the air flow in the air duct.

5. A refrigeration unit for a machine as claimed in claim 1,

the hot end module comprises a hot end of the semiconductor refrigeration piece and a heat dissipation device, and the heat dissipation device is arranged at the hot end of the semiconductor refrigeration piece;

the heat dissipation device comprises a plurality of sub heat dissipation devices which are sequentially communicated end to end.

6. A refrigeration unit for a machine as claimed in claim 5,

a plurality of said sub heat sinks comprising:

the first sub-heat dissipation device is arranged at the hot end of the semiconductor refrigeration sheet;

and the second sub-heat dissipation device is communicated with the first sub-heat dissipation device and is suitable for being arranged in the air duct of the range hood or outside the air duct of the range hood.

7. A refrigeration unit for a machine as claimed in claim 5,

the heat dissipation device comprises a water-cooling heat dissipation device.

8. A refrigeration unit for a machine as claimed in claim 2,

the air outlet is arranged on the top wall of the shell or on the side wall of the shell and inclines upwards, the other end of the second wall section is communicated with the air outlet and is lower than the air outlet, and the second wall section inclines upwards along the flowing direction of the air flow in the air duct.

9. A refrigeration unit for a machine as claimed in claim 8,

the fan with the second wall section corresponds the setting, wherein, the cross section of second wall section is the arc, just curved opening orientation the fan.

10. A machine as claimed in any one of claims 1 to 9 comprising a refrigeration unit for a machine.

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