A refrigeration oil extraction hood

Abstract

The application discloses a kind of refrigeration oil fume absorbers, including oil fume absorbing component and refrigeration component, the refrigeration component includes condenser, the condenser is overall pipeline shape;The refrigeration component further includes the flow guide member for guiding the oil fume entering the condenser to the inner side wall surface of condenser and carrying out heat dissipation to condenser in the space enclosed by condenser.It is compared with prior art, the advantages of the application are that: by making the condenser pipeline shape, pipeline inside is passed by oil fume, can utilize oil fume to cool down condenser, and further set flow guide member, utilize flow guide member and enter the oil fume in condenser to the inner side wall surface of condenser, thus can make most of oil fume and condenser wall surface fully contact, to realize better heat exchange effect, improve the refrigeration efficiency of refrigeration component.

Description

TECHNICAL FIELD

[0001] The present application relates to an oil fume purification device, in particular to a refrigeration oil fume extractor. BACKGROUND

[0002] With the improvement of material life, people have higher and higher requirements for kitchen environment. People need to use stoves and other kitchen utensils during cooking, which will generate a large amount of heat in the kitchen, causing the temperature of the whole space to rise and reducing the comfort of the environment. At present, most families use temporary fans to solve this problem, but this method is not only inconvenient, but also occupies the kitchen area.

[0003] Therefore, the prior art has disclosed an oil fume extractor with refrigeration function, which can blow cold air from the casing of the oil fume extractor to cool the kitchen. For example, the oil fume component of the air conditioner hood disclosed in Chinese Patent No. 201810525673.7 includes an oil fume passage; the air conditioner component includes a condenser component, the condenser component includes a condensing air inlet and a condensing air outlet, the condensing air outlet is communicated with the oil fume passage, and the condensing air inlet is independent of the oil fume passage. However, the arrangement of such a condenser utilizes the main fan of the oil fume extractor for heat dissipation, which reduces the amount of oil fume extracted and affects the oil fume extraction effect.

[0004] There is also a kitchen air conditioner disclosed in Chinese Patent No. 202110029969.1, which includes an air conditioning component and an oil fume extractor component, the air conditioning component includes a compressor, a condenser, a throttling element, and an evaporator, the oil fume extractor component includes an exhaust pipe and an exhaust fan in the exhaust pipe, and the condenser is arranged around the outer wall of the exhaust pipe.

[0005] This kitchen air conditioner can utilize oil fume to dissipate heat from the condenser without additional power. However, since the condenser is wrapped around the exhaust pipe, it is usually not guaranteed that the condenser can be completely attached to the exhaust pipe when it is wrapped, resulting in an air gap layer. Moreover, oil fume needs to pass through the heat-conducting smoke pipe to exchange heat with the pipe wall of the condenser, and the long heat exchange path will result in low heat exchange efficiency. In addition, the condenser relies solely on oil fume for heat dissipation, and most of the oil fume does not contact the condenser, which cannot drive the heat of the condenser, resulting in low heat exchange efficiency. The poor heat dissipation effect of the condenser will directly affect the refrigeration effect of the hood air conditioner, and therefore further improvement is needed. SUMMARY

[0006] The technical problem to be solved by the present application is to provide a refrigeration oil fume extractor to improve the refrigeration efficiency of the refrigeration component.

[0007] The application solves the above technical problems by adopting the technical scheme of a refrigeration oil fume extractor, comprising an oil fume suction assembly and a refrigeration assembly, wherein the refrigeration assembly comprises a condenser, and is characterized in that:

[0008] The condenser is in the shape of a pipe as a whole.

[0009] The refrigeration assembly further comprises a flow guide arranged in the space surrounded by the condenser and used for guiding the oil fume entering the condenser to the inner side wall surface of the condenser to dissipate heat from the condenser.

[0010] By making the condenser in the shape of a pipe, the oil fume can pass through the inside of the pipe to cool the condenser, and further, the flow guide is arranged to guide the oil fume entering the condenser to the inner side wall surface of the condenser, so that most of the oil fume can fully contact the wall surface of the condenser, thereby achieving better heat exchange effect and improving the refrigeration efficiency of the refrigeration assembly.

[0011] According to one aspect of the application, along the oil fume flow path, the outer peripheral wall surface of the flow guide gradually inclines towards the inner side wall surface of the condenser from upstream to downstream.

[0012] Further, the refrigeration assembly further comprises a movement mechanism used for driving the flow guide to move along the length direction of the condenser, so that the flow guide can be moved to the position as required to achieve better heat dissipation at the position with higher temperature.

[0013] Preferably, the movement mechanism comprises a motor and a screw rod driven by the motor and rotating around its own axis, the screw rod penetrating through the flow guide, and the flow guide being threadedly connected with the screw rod.

[0014] Further, the refrigeration assembly further comprises a water pump used for pumping cooling liquid outside the condenser into the flow guide; the outer peripheral wall surface of the flow guide is provided with a water inlet for receiving the cooling liquid and a water outlet for spraying the cooling liquid entering the water inlet onto the inner side wall surface of the condenser, and the flow guide is formed with a water flow channel for fluidly connecting the water inlet and the water outlet. In this way, the cooling liquid can be sprayed onto the inner side wall surface of the condenser to further improve the heat dissipation effect, and the oil stains on the inner side wall surface of the condenser can be cleaned to avoid the influence of long-time adhesion and accumulation of the oil stains on the heat exchange efficiency of the condenser.

[0015] Further, the refrigeration assembly further comprises a water pump for pumping the cooling liquid outside the condenser into the flow guide; the outer peripheral wall of the flow guide is provided with a water inlet for receiving the cooling liquid and a water outlet for spraying the cooling liquid entering from the water inlet onto the inner side wall of the condenser, and the flow guide is internally formed with a water flow channel for fluidly connecting the water inlet and the water outlet; the water pump and the water inlet of the flow guide are connected through a water pipe, which is a telescopic pipe. In this way, the cooling liquid can be sprayed onto the inner side wall of the condenser, further improving the heat dissipation effect and being capable of cleaning the oil stains on the inner side wall of the condenser, thereby avoiding the influence of long-term adhesion and accumulation of the oil stains on the heat exchange efficiency of the condenser.

[0016] According to another aspect of the present application, the flow guide is in the form of a fan structure driven to rotate by the oil fume, and the flow guide comprises a hub and a fan blade arranged at the outer periphery of the hub.

[0017] Further, the refrigeration assembly further comprises a water pump for pumping the cooling liquid outside the condenser into the flow guide; the hub is hollow to receive the cooling liquid, the fan blade is hollow and fluidly connected with the hub, and the fan blade is provided with a water outlet for spraying the cooling liquid entering from the hub onto the inner side wall of the condenser. In this way, the cooling liquid can be sprayed onto the inner side wall of the condenser, further improving the heat dissipation effect and being capable of cleaning the oil stains on the inner side wall of the condenser, thereby avoiding the influence of long-term adhesion and accumulation of the oil stains on the heat exchange efficiency of the condenser; in addition, since the flow guide is in a rotating state, the spraying of the cooling liquid is more uniform, and the heat dissipation and cleaning are better achieved.

[0018] Further, the hub is connected with a generator through a transmission shaft, and the generator is electrically connected with the water pump, so that the water pump does not need to be connected to an external power source any more, thereby reducing the energy consumption.

[0019] Further, in order to facilitate the fluid communication between the water pump and the hub, the transmission shaft is hollow, and the water pump is connected with the transmission shaft through a water pipe and fluidly connected with the hub.

[0020] Further, the refrigeration assembly further comprises an evaporator, and a water collecting tank is arranged below the evaporator to collect the condensed water of the evaporator, the condensed water serving as the cooling liquid, and the water pump is fluidly connected with the water collecting tank, so that the condensed water is used to dissipate heat from the condenser, thereby solving the problem of the discharge of the condensed water.

[0021] Preferably, the oil fume suction assembly comprises a fan and an air outlet cover arranged at the air outlet of the fan, the condenser is longitudinally arranged, and the lower end of the condenser is connected with the upper end of the air outlet cover.

[0022] Preferably, the upper end of the air outlet cover is formed with a downwardly recessed clamping groove, the lower end of the condenser is clamped into the clamping groove, and the air outlet cover is provided with a water leakage hole on the inner side wall surface of the clamping groove, so that the cooling liquid after heat dissipation and cleaning can be discharged downward from the inside of the oil fume suction assembly to avoid pollution to the outside of the whole machine.

[0023] Preferably, in order to ensure a shorter refrigerant heat transfer path, the condenser comprises a main body capable of conducting heat and a refrigerant channel arranged inside the wall portion of the main body, and the main body is in the form of a pipeline.

[0024] Preferably, in order to ensure a shorter refrigerant heat transfer path, the main body comprises two layers of heat conducting plates, and the refrigerant channel is formed between the two layers of heat conducting plates.

[0025] Further, the two layers of heat conducting plates only have a gap at the position where the refrigerant channel is formed.

[0026] Further, the refrigeration assembly is arranged above the oil fume suction assembly; the refrigeration assembly further comprises a second housing, a compressor and an evaporator, the compressor, the evaporator and the condenser are arranged in the second housing, and the second housing is arranged above the first housing. Thus, the refrigeration assembly can be conveniently installed, and the space occupied on both sides of the oil fume suction assembly is also reduced.

[0027] Preferably, the second housing is provided with a partition plate, so as to divide the second housing into a first chamber and a second chamber, the two chambers are isolated from each other, the evaporator is arranged in the first chamber, and the compressor and the condenser are arranged in the second chamber, so as to isolate the cold and hot components of the refrigeration assembly from each other, avoid mutual interference, and improve the refrigeration effect.

[0028] Compared with the prior art, the advantages of the present application are as follows: by making the condenser in the form of a pipeline, the oil fume can pass through the inside of the pipeline, the oil fume can be used to cool the condenser, and a flow guide member is further arranged, the oil fume entering the condenser is guided to the inner side wall surface of the condenser by the flow guide member, so that most of the oil fume can fully contact the wall surface of the condenser, thereby achieving better heat exchange effect and improving the refrigeration efficiency of the refrigeration assembly; the flow guide member is provided with a water channel structure, so that the pumped cooling liquid can be sprayed onto the inner side wall surface of the condenser, further improving the heat dissipation effect, and the oil stains on the inner side wall surface of the condenser can be cleaned, avoiding the adverse effects of the oil stains on heat dissipation. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a schematic view of the range hood of the first embodiment of the present application;

[0030] Figure 2 It is a schematic view of the oil fume suction assembly and the refrigeration assembly of the range hood of the first embodiment of the present application respectively hiding part of the housing;

[0031] Figure 3 Fig. 6 is a sectional view of the refrigeration assembly of the range hood according to the first embodiment of the present application;

[0032] Figure 4 Fig. 7 is a sectional view (the section is vertical) of the refrigeration assembly and the exhaust duct of the range hood according to the first embodiment of the present application; Figure 3

[0033] Figure 5 Fig. 8 is an enlarged schematic view of a portion I of Fig. 7; Figure 4

[0034] Figure 6 Fig. 9 is an exploded structural schematic view of the condenser, the water pump and the water pipe of the refrigeration assembly of the range hood according to the first embodiment of the present application;

[0035] Figure 7 Fig. 10 is a schematic view of the flow guide of the refrigeration assembly of the range hood according to the first embodiment of the present application;

[0036] Figure 8 Fig. 11 is a sectional view of the flow guide of the refrigeration assembly of the range hood according to the first embodiment of the present application;

[0037] Figure 9 Fig. 12 is a partial sectional view of the range hood according to the second embodiment of the present application;

[0038] Figure 10 Fig. 13 is a schematic view of the flow guide, the generator and the mounting bracket thereof of the range hood according to the second embodiment of the present application;

[0039] Figure 11 Fig. 14 is a sectional view of the flow guide and the generator of the range hood according to the second embodiment of the present application;

[0040] Figure 12 Fig. 15 is an exploded structural schematic view of the flow guide and the generator of the range hood according to the second embodiment of the present application. DETAILED DESCRIPTION

[0041] Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements having the same or similar functions.

[0042] ​​In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, since the disclosed embodiments of the present application can be arranged in different directions, so these orientation-indicating terms are only illustrative and should not be regarded as limiting, such as "upper", "lower" are not necessarily limited to the direction opposite or consistent with the direction of gravity. In addition, the features defined as "first", "second" can be explicitly or implicitly included one or more features.

[0043] Embodiment one

[0044] Reference Figures 1-5 A refrigeration range hood, comprising a suction oil component and a refrigeration component, wherein the suction oil component comprises a first shell 11 and a fan 12 arranged in the first shell 11, in this embodiment, the suction oil component is shown in the form of a commonly used side suction type range hood, which can be any form of existing top suction type, low suction type, ceiling type, etc. The first shell 11 can be a combination of one or more shells.

[0045] The suction oil component and the refrigeration component form independent modules respectively, and when installed, the refrigeration component is mounted on the suction oil component, so that the refrigeration component does not occupy the space on the left and right sides of the first shell 11 of the suction oil component, so that the offset of the fan stand for arranging the fan 12 does not affect the suction oil effect itself. Moreover, the two modules are independently installed, which can meet the needs of new decoration users and replacement of old customers.

[0046] The refrigeration component comprises a second shell 21, a compressor 22, an evaporator 23, a condenser 24 and a cooling fan 25, wherein the second shell 21 is arranged above the first shell 11, the compressor 22, the evaporator 23, the condenser 24 and the cooling fan 25 can be arranged in the second shell 21, and the compressor 22, the evaporator 23 and the condenser 24 form a refrigerant passage. The working principle of the refrigeration component is the same as the prior art.

[0047] The front side of the second shell 21, such as the position close to the top, is provided with a cold air outlet 211, and the evaporator 23 and the corresponding cold air fan 25 can be arranged near the cold air outlet 211. The cold air after heat exchange in the evaporator 23 is blown out from the cold air outlet 211 to the kitchen through the cold air fan 25, so as to provide a comfortable cooking environment temperature for the user. The other sides of the second shell 21, such as the left and right sides, are provided with air inlets 212 to supplement air (room temperature air) into the second shell 21.

[0048] The second shell 21 is provided with a partition plate 26, so as to divide the second shell 21 into a first chamber 213 and a second chamber 214, and the two chambers are isolated from each other. The first chamber 213 is a cold chamber, and the evaporator 23 is arranged in the first chamber 213. The second chamber 214 is a hot chamber, and the compressor 22 and the condenser 24 are arranged in the second chamber 214.

[0049] The condenser 24 comprises a main body 241 and a refrigerant channel 242. The main body 241 is in a hollow pipe shape, which can be a cylinder or a cuboid, and the refrigerant channel 242 is formed in the wall of the main body 241. The main body 241 comprises two layers of heat conduction plates 2411, and the refrigerant channel 242 is formed between the two layers of heat conduction plates 2411. The two layers of heat conduction plates 2411 only have a gap at the position of the refrigerant channel 242, and are attached at other positions. (The gap outside the refrigerant channel 242 caused by the processing process, such as bubbles, should be regarded as a case without gap.) Optionally, the heat conduction plate 2411 is a metal plate, such as an aluminum plate. Two aluminum plates are hot-rolled and pressed, the refrigerant channel 242 is formed by blowing between the two aluminum plates, and then the whole is rolled into the required shape. The refrigerant in the refrigerant channel 242 after hot rolling can withstand a pressure of 2.3 MPa, and the refrigerant and the heat conduction material are in zero-gap contact, so the heat exchange efficiency is very high, and the surface temperature of the condenser is not higher than 50℃ in natural environment. The fin type or the winding type described in the background art commonly used in existing air conditioners cannot completely realize zero-gap matching between the refrigerant and the heat conduction material, so the heat transfer is not smooth, which causes the condenser itself to be high in temperature, and further affects the overall refrigeration effect of the refrigeration assembly.

[0050] The refrigerant channel 242 can be spiral-shaped or parallel backflow-shaped.

[0051] On the oil fume flow path, the condenser 24 is arranged downstream of the fan 12, which can be directly connected with the air outlet of the fan 12 or connected with the fan 12 through the air outlet cover 13. That is, the space surrounded by the inner heat-conducting plate 2411 of the main body 241 is configured as the smoke exhaust passage 2412 through which the oil fume discharged by the fan 12 passes before reaching the public flue or being exhausted to the indoor environment. The inner side wall surface of the inner heat-conducting plate 2411 and the outer side wall surface of the outer heat-conducting plate 2411 both constitute heat dissipation surfaces. The inner heat dissipation surface is cooled by the oil fume passing through the smoke exhaust passage 2412, and the outer heat dissipation surface is in contact with the room temperature air entering the second shell 21 from the indoor environment of the kitchen during operation, and can also achieve a certain degree of heat dissipation. The room temperature air constitutes the heat dissipation fluid.

[0052] The condenser 24 is connected downstream with the smoke exhaust duct 3. In the embodiment, the condenser 24 is arranged longitudinally, and the condenser 24 is cylindrical, matching the shapes and sizes of the air outlet cover 13 and the smoke exhaust duct 3.

[0053] The refrigeration assembly further comprises a flow guide 27 arranged inside the space surrounded by the condenser 24, i.e. in the smoke exhaust passage 2412 of the condenser 24. The outer peripheral wall surface of the flow guide 27 gradually inclines towards the inner side wall surface of the condenser 24 from upstream to downstream, which can preferably be in the shape of a circular truncated cone with the upper part larger and the lower part smaller. When the oil fume enters the condenser 24, it first contacts the smaller bottom part of the flow guide 27, and then spreads outward under the guidance of the flow guide 27, and further flows to the inner side wall surface of the condenser 24, achieving efficient heat dissipation of the condenser 24.

[0054] The flow guide 27 can move in the condenser 24 along the length extension direction of the condenser 24 (the up-down direction in the embodiment). For this purpose, the refrigeration assembly further comprises a movement mechanism for driving the flow guide 27 to move up and down. The movement mechanism is a linear drive module, which in the embodiment comprises a motor 281 and a screw rod 282. The motor 281 can be fixed to the upper end of the condenser 24 and located in the smoke exhaust duct 3. The screw rod 282 extends longitudinally in the smoke exhaust passage 2412 of the condenser 24 and can rotate around its own axis under the drive of the motor 281. The screw rod 282 passes through the flow guide 27, and the part of the flow guide 27 through which the screw rod 282 passes is formed with an internal thread 271. Thus, the flow guide 27, like the nut of such a commonly used linear drive module as the output end, can move linearly when the screw rod 282 rotates through the threaded connection with the screw rod 282. A nut can also be separately arranged in the flow guide 27.

[0055] Alternatively, the movement mechanism can also adopt other existing linear drive modules, such as an electric push rod, a motor gear and rack combination, etc.

[0056] A temperature sensor can be arranged in the condenser 24, and when a certain position is detected to have a higher temperature, the flow guide 27 is driven to move to the position so that the position with higher temperature can be cooled better. When the refrigeration assembly is not working, and the condenser 24 does not need to be cooled, the flow guide 27 can be arranged in the condenser 24 near the upper end, so as to reduce the resistance of the flow guide 27 to the exhaust of the fan 12 of the smoke suction assembly.

[0057] Referring to Figure 4 、 Figures 6-8 , the refrigeration assembly further comprises a water pump 291 and a water pipe 292, and the outer circumferential wall of the flow guide 27 is provided with a water inlet 272 and a water outlet 273, and the water outlet 273 can have at least two, which are arranged along the circumference of the flow guide 27, and preferably, the water outlet 273 is arranged near the upper end of the flow guide 27. The flow guide 27 is internally formed with a water flow channel 274, which fluidly connects the water inlet 272 and each water outlet 273. The water pipe 292 fluidly connects the water pump 291 and the water inlet 272 of the flow guide 27, and the water pump 291 is connected to a water source, so that water (or other cooling liquid) can be pumped into the flow guide 27, and sprayed to the inner side wall of the condenser 24 through the water outlet 273, so as to bring better cooling effect of the condenser 24 and oil stain cleaning effect of the inner side wall of the condenser 24. Since the flow guide 27 will rise and fall in the condenser 24 when working, the water pipe 292 is a telescopic pipe.

[0058] In this embodiment, the water source is the condensation water of the refrigeration assembly, and a water collecting tank 231 can be arranged below the evaporator 23 to collect the condensation water flowing down from the evaporator 23, and the water pump 291 is fluidly connected to the water collecting tank 231. The water pump 291 extracts the condensation water in the water collecting tank 231, and under the pressure of the water pump 291, the condensation water can be sprayed from the water outlet 273 of the flow guide 27 to the inner side wall of the condenser 24. Thus, not only the cooling effect and oil stain cleaning are improved, but also the problem of condensation water discharge is solved.

[0059] Embodiment Two

[0060] Referring to Figures 9-12In the present embodiment, different from the above-mentioned embodiment one, the flow guide 27 is in a structure similar to a fan, and does not move up and down any more, but rotates by being driven by the upwardly rising oil fume flow, and the rotation axis extends in the longitudinal direction. The flow guide 27 comprises a hub 275 in the middle and fan blades 276 arranged on the outer periphery of the hub 275, and the fan blades 276 can be at least two, arranged along the circumferential direction of the hub 275 and spaced apart, and each fan blade 276 is inclined and curved at a certain angle relative to the axial direction (the longitudinal direction shown in the figure) of the flow guide 27, similar to a commonly used axial flow fan. Thus, when the oil fume passes through the flow guide 27 from bottom to top, the flow guide 27 is driven to rotate, and the rotating fan blades 276 guide the oil fume to the inner side wall surface of the condenser 24.

[0061] The hub 275 is connected with the generator 30 through a transmission shaft 277, so that when the flow guide 27 rotates at high speed under the action of the high-speed oil fume flow, the flow guide 27 provides kinetic energy for the generator 30, and the generator 30 can generate electricity by using the kinetic energy generated by the flow guide 27. The generator 30 is electrically connected with the water pump 291 through a conductive wire 301, and uses the electricity generated by the generator 30 as the power source of the water pump 291, reducing the waste of power resources caused by the external power supply of the water pump 291. In addition, the generator 30 is also rotatably installed with the condenser 24 through a mounting bracket 302.

[0062] The hub 275, the fan blades 276 and the transmission shaft 277 are all hollow inside, so that the hub 275 can serve as a water storage tank, and the hub 275 and the transmission shaft 277 are connected to make the hub 275 and the transmission shaft 277 in fluid communication, and the fan blades 276 and the hub 275 are also in fluid communication. The water outlets 273 of the flow guide 27 are arranged on the upper end of the fan blades 276, and there can be at least two, arranged along the radial direction of the flow guide 27. The cooling liquid, such as condensed water, from the transmission shaft 277, when the water pump 291 continuously pressurizes, the condensed water pressure in the hub 275 reaches the limit, the low-temperature condensed water is transmitted into the fan blades 276, and is sprayed out through the water outlets 273 on the fan blades 276. The water outlets 273 have a certain pitch angle, so as to ensure that the sprayed water flow has a certain lift, and is inclined towards the inner side wall surface of the condenser 24, so that the water flow can be sprayed onto the inner side wall surface of the condenser 24. Since the flow guide 27 is always in a rotating state during work, the condensed water can be fully sprayed onto the inner side wall surface of the condenser 24, bringing a better cooling effect.

[0063] The water pump 291 is connected with the transmission shaft 277 through a water pipe 292 and realizes fluid communication therebetween, and the water pipe 292 and the transmission shaft 277 can relatively rotate. The cooling liquid connected with the water pump 291 is the same as that of the above-mentioned embodiment one.

[0064] The lower end of the condenser 24 is connected with the upper end of the air outlet cover 13, the upper end of the air outlet cover 13 is formed with a U-shaped clamping groove 131 concave downward, the lower end of the condenser 24 can be clamped into the clamping groove 131, the air outlet cover 13 is provided with a water leakage hole 132 on the inner side wall surface of the clamping groove 131, thereby the water sprayed into the condenser 24 by the flow guide 27 flows downward along the inner side wall surface of the condenser 24 due to gravity after cooling and oil stain cleaning of the condenser 24, and finally gathers to the clamping groove 131 of the air outlet cover 13, and then flows into the cavity of the oil suction assembly through the water leakage hole 132 on the clamping groove 131, and finally the condensed water flows into the oil cup (not marked) of the oil smoke suction assembly. This structure is also applicable to the first embodiment.

[0065] The "fluid communication" in the present application refers to the spatial position relationship between two components or parts (hereinafter collectively referred to as the first part and the second part), i.e. the fluid (gas, liquid or mixture of the two) can flow or / and be transported from the first part to the second part along the flow path, which can be directly connected between the first part and the second part, or indirectly connected between the first part and the second part through at least one third party, which can be a fluid passage such as a pipeline, a channel, a conduit, a flow guide, a hole, a groove, etc., or a chamber allowing fluid to flow, or a combination thereof.

Claims

1. A refrigeration range hood, comprising a fume suction assembly and a refrigeration assembly, the refrigeration assembly comprising a condenser (24), characterized in that: the condenser (24) is in the shape of a pipe as a whole; the refrigeration assembly further comprises a flow guide (27) arranged in a space enclosed by the condenser (24) and used for guiding fume entering the condenser (24) to the inner side wall surface of the condenser (24) to dissipate heat from the condenser (24), the outer peripheral wall surface of the flow guide (27) gradually inclines towards the inner side wall surface of the condenser (24) from upstream to downstream along the fume flow path; the refrigeration assembly further comprises a movement mechanism used for driving the flow guide (27) to move along the length direction of the condenser (24), the movement mechanism comprising a motor (281) and a screw rod (282) driven to rotate about its own axis by the motor (281), the screw rod (282) penetrating through the flow guide (27), and the flow guide (27) being threadedly connected with the screw rod (282). the refrigeration assembly further comprises a water pump (291) used for pumping cooling liquid outside the condenser (24) into the flow guide (27); the outer peripheral wall surface of the flow guide (27) is provided with a water inlet (272) for receiving the cooling liquid and a water outlet (273) for spraying the cooling liquid entering the water inlet (272) to the inner side wall surface of the condenser (24), and the flow guide (27) is formed with a water flow channel (274) for fluidly connecting the water inlet (272) and the water outlet (273). the refrigeration assembly further comprises a water pump (291) used for pumping cooling liquid outside the condenser (24) into the flow guide (27); 2. The refrigerant oil extraction hood according to claim 1, characterized in that: the outer peripheral wall surface of the flow guide (27) is provided with a water inlet (272) for receiving the cooling liquid and a water outlet (273) for spraying the cooling liquid entering the water inlet (272) to the inner side wall surface of the condenser (24), and the flow guide (27) is formed with a water flow channel (274) for fluidly connecting the water inlet (272) and the water outlet (273). the water pump (291) and the water inlet (272) of the flow guide (27) are connected through a water pipe (292), and the water pipe (292) is a telescopic pipe.

3. The oil-suction refrigerating range hood according to claim 1, characterized in that: the refrigeration assembly further comprises an evaporator (23), and a water collecting tank (231) is arranged below the evaporator (23) for collecting condensed water of the evaporator (23), the condensed water serving as the cooling liquid, and the water pump (291) is in fluid communication with the water collecting tank (231). the fume suction assembly comprises a fan (12) and a fan outlet cover (13) arranged at the outlet of the fan (12), the condenser (24) is arranged longitudinally, and the lower end of the condenser (24) is connected with the upper end of the fan outlet cover (13). the upper end of the fan outlet cover (13) is formed with a downwardly recessed clamping groove (131), the lower end of the condenser (24) is clamped into the clamping groove (131), and the fan outlet cover (13) is provided with a water leakage hole (132) on the inner side wall surface of the clamping groove (131).

4. The refrigerant oil extraction hood as claimed in claim 2 wherein: ​ 5. The refrigerant oil extraction hood as claimed in claim 2 wherein: ​ 6. The refrigerant oil extraction hood according to claim 5, characterized in that: ​ 7. The oil-scented extractor hood according to claim 1, characterized in that: The condenser (24) comprises a main body (241) capable of conducting heat and a refrigerant channel (242) arranged inside a wall portion of the main body (241), and the main body (241) is in a pipe shape.

8. The refrigerant oil extraction hood according to claim 7, characterized in that: The main body (241) comprises two layers of heat-conducting plates (2411), and the refrigerant channel (242) is formed between the two layers of heat-conducting plates (2411).

9. The oil-smoke exhaust hood according to claim 1, characterized in that: The refrigeration assembly is arranged above the oil fume suction assembly; the refrigeration assembly further comprises a second shell (21), a compressor (22) and an evaporator (23), and the compressor (22), the evaporator (23) and the condenser (24) are arranged in the second shell (21), and the second shell (21) is arranged above the first shell (11).

10. The oil-extraction range hood according to claim 9, characterized in that: A partition (26) is arranged in the second shell (21), so that the second shell (21) is divided into a first chamber (213) and a second chamber (214), and the two chambers are isolated from each other, the evaporator (23) is arranged in the first chamber (213), and the compressor (22) and the condenser (24) are arranged in the second chamber (214).

11. A refrigeration oil fume suction range comprising an oil fume suction assembly and a refrigeration assembly, and the refrigeration assembly comprises a condenser (24), characterized in that: The condenser (24) is in a pipe shape as a whole; The refrigeration assembly further comprises a flow guide (27) arranged in a space surrounded by the condenser (24) and used for guiding oil fume entering the condenser (24) to an inner side wall surface of the condenser (24) to dissipate heat of the condenser (24), the flow guide (27) is in a fan structure driven to rotate by the oil fume, and the flow guide (27) comprises a hub (275) and a fan blade (276) arranged at an outer periphery of the hub (275).

12. The refrigerant oil extraction hood according to claim 11, characterized in that: The refrigeration assembly further comprises a water pump (291) used for pumping cooling liquid outside the condenser (24) into the flow guide (27). The hub (275) is hollow and capable of receiving the cooling liquid, the fan blade (276) is hollow and in fluid communication with the hub (275), and the fan blade (276) is provided with a water outlet (273) used for spraying the cooling liquid entering the hub (275) to the inner side wall surface of the condenser (24).

13. The refrigerant oil extraction hood according to claim 12, characterized in that: The hub (275) is connected with a generator (30) through a transmission shaft (277), and the generator (30) and the water pump (291) are electrically connected.

14. The refrigerant oil extraction hood according to claim 13, characterized in that: The transmission shaft (277) is hollow, the water pump (291) is connected with the transmission shaft (277) through a water pipe (292) and thus in fluid communication.

15. The oil-exhaust hood according to claim 12, characterized in that: The refrigeration assembly further comprises an evaporator (23), and a water collecting groove (231) for collecting condensed water of the evaporator (23) is arranged below the evaporator (23), the condensed water is used as the cooling liquid, and the water pump (291) is in fluid communication with the water collecting groove (231).

16. The refrigeration hood according to claim 12, characterized in that: The oil fume suction assembly comprises a fan (12) and an air outlet cover (13) arranged at an air outlet of the fan (12), the condenser (24) is arranged in a longitudinal direction, and a lower end portion of the condenser (24) is connected with an upper end portion of the air outlet cover (13).

17. The refrigerant oil-laden exhaust hood according to claim 16, characterized in that: The upper end of the air outlet cover (13) is formed with a downwardly recessed clamping groove (131), the lower end of the condenser (24) is clamped into the clamping groove (131), and the air outlet cover (13) is provided with a water leakage hole (132) on the inner side wall surface of the clamping groove (131).

18. The refrigerant oil-laden exhaust hood according to claim 11, characterized in that: The condenser (24) comprises a main body (241) capable of conducting heat and a refrigerant channel (242) arranged inside the wall portion of the main body (241), and the main body (241) is in a pipe shape.

19. The refrigerant oil extraction hood according to claim 18, characterized in that: The main body (241) comprises two layers of heat-conducting plates (2411), and the refrigerant channel (242) is formed between the two layers of heat-conducting plates (2411).

20. The refrigeration hood according to claim 11, characterized in that: The refrigeration assembly is arranged above the oil smoke suction assembly; the refrigeration assembly further comprises a second shell (21), a compressor (22) and an evaporator (23), the compressor (22), the evaporator (23) and the condenser (24) are arranged in the second shell (21), and the second shell (21) is arranged above the first shell (11).

21. The refrigerant oil-laden exhaust hood according to claim 20, characterized in that: A partition plate (26) is arranged in the second shell (21), so that the second shell (21) is divided into a first chamber (213) and a second chamber (214), the two chambers are isolated from each other, the evaporator (23) is arranged in the first chamber (213), and the compressor (22) and the condenser (24) are arranged in the second chamber (214).

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