Range hood

Abstract

The utility model relates to a range hood, which comprises an oil smoke suction device, an oil smoke exhaust device and a smoke exhaust device, the outdoor main machine device is arranged outdoors and comprises a purification box device and a fan device which are sequentially arranged in the smoke flowing direction, the purification box device comprises a purification box body and a filtering assembly which is arranged in the purification box body and used for filtering oil smoke, and the purification box body is in fluid communication with the oil smoke suction device; the hot air blowing device comprises an air blower and a heating device used for heating air blown out by the air blower, and an air outlet of the hot air blowing device faces the bottom wall of the purification box body. The outdoor main machine device has the advantages that oil accumulated on the bottom wall of the purification box body of the outdoor main machine device can be heated through the hot air blowing device, so that the oil is volatilized or condensed, the situation that the installation environment of a roof is polluted due to the fact that the accumulated oil is too much and leaks is avoided, and potential safety hazards are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a range hood. Background Art

[0002] A range hood is a kitchen appliance that purifies the kitchen environment. With the improvement of people's living standards, multi-level intelligent range hoods are relatively popular. For example, the invention patent application with application publication number CN202010923493.1 discloses a multi-connected range hood and its control method. The multi-connected range hood includes: an outdoor range hood main unit, multiple indoor terminal units, a main air duct, multiple branch air ducts, and a detection module. After obtaining the information that at least one indoor terminal unit in the kitchen is in working condition, the main control box can control the fan to start exhaust at a preset initial speed. The fumes in the kitchen are drawn into the indoor terminal unit and merged into the main air duct through the branch air duct, and then discharged into the atmosphere after being processed by the outdoor range hood main unit.

[0003] However, the above-mentioned multi-stage intelligent range hood still has certain shortcomings. The outdoor host of the multi-stage intelligent range hood is placed outdoors. The outdoor host usually includes a purification box for filtering oil smoke. A filter is set in the purification box. The filter is generally replaced regularly or when the filtering efficiency of the filter is reduced. However, the prior art often ignores that the filter is filled with oil after long-term use, which will drip under the action of gravity and accumulate inside the outdoor unit. Although the filter filters the oil, due to the lack of a collection device, if there are gaps between the structural parts, this part of the oil will flow out through the gaps and pollute the rooftop installation environment. If there are no gaps, it will be stored for a long time and a large amount of oil will gather inside, posing a safety hazard.

[0004] Therefore, existing range hoods need further improvement. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a range hood which can timely process the oil generated in the filtering process of the outdoor host device to avoid the oil accumulation at the bottom in view of the current status of the prior art.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a range hood, comprising:

[0007] The oil fume suction device is installed indoors to absorb and exhaust oil fume;

[0008] An outdoor host device is arranged outdoors, and includes a purification box device and a fan device arranged in sequence along the flow direction of the smoke, wherein the purification box device includes a purification box body and a filter assembly arranged in the purification box body for filtering the oil smoke, and the purification box body is in fluid communication with the oil smoke suction device;

[0009] The hot air blowing device comprises a blower and a heating device for heating the air blown by the blower, and the air outlet of the hot air blowing device faces the bottom wall of the purification box.

[0010] As an improvement, the blower is arranged outside the purification box, and the air outlet of the blower extends into the purification box.

[0011] In order to maximize the contact area between the hot air and the bottom wall of the purification box to ensure that more oil or oil stains evaporate or condense on the bottom wall of the purification box, the opening of the air outlet of the blower is basically horizontal and arranged adjacent to the bottom of the purification box.

[0012] In order to quickly increase the temperature of the hot air, preferably, the heating device is an electric heating wire arranged at the air outlet of the hot blowing device.

[0013] In order to improve the filtering effect, a horizontally extending smoke channel is formed in the purification box, and the filter assembly includes a first filter screen and a second filter screen, both of which are vertically extended and arranged in sequence along the extension direction of the smoke channel.

[0014] In order to prevent the oil on the bottom wall of the purification box from contacting the filter assembly, a bracket for supporting the first filter screen and the second filter screen is further provided on the bottom wall of the purification box.

[0015] Another technical solution adopted by the utility model to solve the above technical problem is: it also includes an oil suction device, which includes an oil suction machine for sucking and discharging the oil accumulated at the bottom of the purification box to the filter assembly.

[0016] In order to collect the oil dripping onto the bottom wall of the purification box and facilitate centralized treatment of the oil, the bottom wall of the purification box is provided with a concave oil collecting groove, the suction port of the oil suction machine extends into the oil collecting groove, and the liquid outlet of the oil suction machine faces the filter assembly.

[0017] In order to improve the filtering effect, a horizontally extending smoke channel is formed in the purification box, and the filter assembly includes a first filter screen and a second filter screen, both of which are vertically extended and arranged in sequence along the extension direction of the smoke channel.

[0018] In order to collect the oil and dirt flowing down from the filter assembly as quickly as possible, the oil collecting groove is a strip groove arranged along the extension direction of the filter assembly.

[0019] Compared with the prior art, the utility model has the following advantages: the hot air blowing device can heat the oil accumulated on the bottom wall of the purification box of the outdoor host device to make it volatilize or condense, thereby avoiding leakage due to excessive accumulation of oil and polluting the installation environment on the roof, reducing safety hazards. In another preferred embodiment, the oil accumulated on the bottom wall of the purification box can be redistributed to the filter assembly through the oil suction device, so that the oil accumulated on the bottom wall of the purification box can also be leaked due to excessive accumulation of oil and pollute the installation environment on the roof, reducing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a three-dimensional structural schematic diagram of a range hood according to Embodiment 1 of the present utility model (only the outdoor host device is shown);

[0021] Figure 2 This is a front view of the outdoor host device of the range hood according to Embodiment 1 of the present utility model;

[0022] Figure 3 It is a vertical cross-sectional view of an outdoor main unit of a range hood according to Embodiment 1 of the utility model;

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the blower of the outdoor main unit of the range hood according to Embodiment 1 of the utility model;

[0024] Figure 5 It is a vertical cross-sectional view of the outdoor host device of the range hood according to embodiment 2 of the utility model. DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0026] 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.

[0027] Figure 1-Figure 4A preferred embodiment of the range hood of the utility model is shown. The range hood includes a range hood (not shown) and an outdoor host device, wherein the range hood is arranged indoors and generally includes a smoke collecting hood for smoke intake and smoke collection. The outdoor host device is generally arranged outdoors, and includes a smoke intake box, a purification box device, a fan device, and a smoke exhaust box arranged in sequence along the direction of smoke flow. The fan device includes a fan box 40 and a fan system arranged in the fan box 40. The fan system generally uses a centrifugal fan 41 to provide negative pressure for smoke intake and exhaust.

[0028] See also Figure 3 The fan housing 40 is placed on a base, and its side is connected to the purification box device, and the side of the purification box device is connected to the air inlet housing 42, and the air inlet housing 42 can be connected to the indoor fume suction device fluid through a pipeline. The exhaust housing 43 is connected to the top of the fan housing 40, and an air outlet 410 is provided on the top plate of the top of the fan housing 40, and the opening direction of the air outlet 410 is arranged upward. In order to guide the exhaust airflow of the fan system upward, the air outlet 410 of the fan housing 40 is also connected to the air guide 431 extending upward from the outer peripheral edge of the air outlet 410. Specifically, the air guide 431 is located in the exhaust housing 43 as a whole, and its highest position (i.e., the upper port position) is located in the approximate middle position of the exhaust housing 43. A filter is arranged at the outlet of the air guide 431, and the filter can make the airflow of the air guide 431 more uniform. An exhaust port is provided on the top plate of the exhaust box 43, and an air outlet grille 433 is provided at the exhaust port. The middle part of the air outlet grille 433 is a closed plate structure, and the bottom of the closed plate is connected to a shielding plate 432 arranged obliquely relative to the horizontal plane through a suspension. The shielding plate 432 is correspondingly shielded above the upper port of the air guide tube 431, thereby preventing rainwater from entering the fan system through the air guide tube 431 and causing damage to the components in the fan system. The obliquely arranged shielding plate 432 can also prevent rainwater dripping onto the shielding plate 432 from accumulating on the surface of the shielding plate 432.

[0029] The purification box device includes a purification box body 10 and a filter assembly 11 disposed in the purification box body 10. A horizontally extending smoke channel 100 is formed in the purification box body 10, and the filter assembly 11 includes a first filter screen 111 and a second filter screen 112, both of which extend vertically and are arranged in sequence along the extension direction of the smoke channel 100. Among them, a bracket 12 is also provided on the bottom wall of the purification box body 10, both of which are used to support the first filter screen 111 and the second filter screen 112, so that there is a certain gap between the first filter screen 111 and the second filter screen 112 and the bottom wall of the purification box body 10, which can prevent the oil on the bottom wall of the purification box body 10 from directly contacting the filter assembly 11.

[0030] The purification box 10 is also provided with a hot air blowing device, which includes a blower 21 and a heating device 22 for heating the air blown out by the blower 21. The hot air blowing device of this embodiment is the blower 21, which is arranged outside the purification box 10, and the air outlet 410 of the blower 21 extends into the purification box 10. Among them, an electric heating wire is provided in the air outlet pipe connected to the air outlet 410 of the blower 21, and the electric heating wire can heat the air blown out by the blower 21, and the electric heating wire is the heating device 22.

[0031] The opening direction of the air outlet 410 of the blower 21 is basically horizontal and is arranged adjacent to the bottom of the purification box 10. In this way, the hot air blown out from the air outlet 410 of the blower 21 can cover the bottom wall of the purification box 10 as much as possible, increasing the contact area between the hot air and the bottom wall of the purification box 10 to ensure that more oil or oil stains on the bottom wall of the purification box 10 evaporate or condense. In this way, it is possible to effectively avoid excessive oil accumulation on the bottom wall of the purification box 10 and leakage to pollute the installation environment on the roof, thereby reducing safety hazards.

[0032] Example 2

[0033] Figure 5 Another preferred embodiment of the range hood of the utility model is shown. The difference between this embodiment and embodiment 1 is that the hot air blowing device is omitted and replaced by an oil suction device. Specifically, the oil suction device includes an oil suction machine 31. The bottom wall of the purification box 10 has a concave oil collecting groove 101. The oil on the bottom wall of the purification box 10 can be collected in the oil collecting groove 101. The suction port 311 of the oil suction machine 31 extends into the oil collecting groove 101, and the liquid outlet 312 faces the filter assembly 11. When the oil in the oil collecting groove 101 reaches a certain level, the oil suction machine 31 is started to suck and discharge the oil in the oil collecting groove 101 to the filter assembly 11. Preferably, the oil can be discharged above the filter assembly 11, especially at the corner position, so as to slow down the speed of the oil falling on the filter assembly 11.

[0034] In order to collect the oil stains flowing down from the filter assembly 11 as quickly as possible, the oil collecting groove 101 arranged on the bottom wall of the purification box 10 of this embodiment is a strip groove, which is arranged along the extension direction of the filter assembly 11, that is, the length direction of the strip groove is basically perpendicular to the extension direction of the smoke channel 100 of the purification box 10.

[0035] The "fluid communication" referred to in the present invention refers to the spatial position relationship between two parts or parts (hereinafter collectively referred to as the first part and the second part respectively), that is, the 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, conduit, guide member, hole, groove, etc., or a chamber allowing fluid to flow through, or a combination of the above.

Claims

1. A range hood, comprising: The oil fume suction device is installed indoors to absorb and exhaust oil fume; An outdoor host device is arranged outdoors, comprising a purification box device and a fan device arranged in sequence along the flow direction of smoke, the purification box device comprising a purification box body (10) and a filter assembly (11) arranged in the purification box body (10) and used for filtering oil smoke, the purification box body (10) being in fluid communication with the oil smoke suction device; The invention is characterized in that it also includes: The hot air blowing device comprises a blower (21) and a heating device (22) for heating the air blown out by the blower (21); the air outlet (410) of the hot air blowing device faces the bottom wall of the purification box (10).

2. The range hood according to claim 1, characterized in that: The blower (21) is arranged outside the purification box (10), and the air outlet (410) of the blower (21) extends into the purification box (10).

3. The range hood according to claim 2, characterized in that: The air outlet (410) of the blower (21) is opened in a horizontal direction and is arranged adjacent to the bottom of the purification box (10).

4. The range hood according to claim 1, characterized in that: The heating device (22) is an electric heating wire arranged at the air outlet (410) of the hot air blowing device.

5. The range hood according to claim 1, characterized in that: A horizontally extending smoke channel (100) is formed in the purification box (10), and the filter assembly (11) comprises a first filter screen (111) and a second filter screen (112) both of which extend vertically and are arranged in sequence and at intervals along the extension direction of the smoke channel (100).

6. The range hood according to claim 5, characterized in that: A bracket (12) is also provided on the bottom wall of the purification box (10) and is used to support the first filter screen (111) and the second filter screen (112).

7. The range hood according to claim 1, characterized in that: It also includes an oil suction device, which includes an oil suction machine (31) for sucking and discharging the oil liquid accumulated at the bottom of the purification box (10) onto the filter assembly (11).

8. The range hood according to claim 7, characterized in that: The bottom wall of the purification box (10) is provided with a concave oil collecting groove (101), the liquid suction port (311) of the oil suction machine (31) extends into the oil collecting groove (101), and the liquid outlet (312) of the oil suction machine (31) faces the filter assembly (11).

9. The range hood according to claim 8, characterized in that: A horizontally extending smoke channel (100) is formed in the purification box (10), and the filter assembly (11) comprises a first filter screen (111) and a second filter screen (112) both of which extend vertically and are arranged in sequence and at intervals along the extension direction of the smoke channel (100).

10. The range hood according to claim 8, characterized in that: The oil collecting groove (101) is a strip-shaped groove arranged along the extension direction of the filter assembly (11).

Images