A range hood

Abstract

This utility model relates to a range hood, including a casing and a fan installed inside the casing, as well as an ionized water mechanism installed inside the casing for spraying electrolyzed water mist into the fan; and a high-voltage power supply installed inside the casing and electrically connected to the fan for generating a high-voltage electric field on the fan. The range hood of this utility model, by incorporating the ionized water mechanism, can spray ionized water onto the volute and impeller during self-cleaning, causing the grease to undergo saponification and emulsification, thus better removing it from the components. Combined with the high-voltage electric field generated on the fan by the high-voltage power supply, the combination of electrolyzed water and grease carries a large amount of negative charge. Under the influence of the high-voltage electric field, the adhesion of the grease combination to the internal components of the range hood decreases, allowing the grease combination to be better and faster removed when the fan rotates, thereby achieving self-cleaning. This range hood has a higher grease removal effect during self-cleaning.

Description

Technical Field

[0001] This utility model relates to a range hood. Background Technology

[0002] After prolonged use, the impeller of a range hood accumulates a large amount of grease, affecting its smoke extraction efficiency. Users need to clean the inside of the range hood regularly. Steam cleaning is a common self-cleaning method for range hoods. Its basic principle is that a steam generator produces steam, which is then delivered to the nozzles at the end of the spray pipe. The steam is rapidly ejected from the nozzles, washing away the impeller and volute. For example, the Chinese invention patent application CN115788977A (application number 202211579463.9), entitled "Method for Cleaning Fans of Range Hoods," discloses a solution that primarily uses steam heating spray and increased motor speed to increase centrifugal force to solve the grease problem. Specifically, high-temperature steam is generated inside the range hood. The range hood's operation draws this steam into the cavity, where it adheres to the impeller and volute. Some of the grease dissolves in the steam and is thrown off by the rotating impeller. However, the implementation of this technology has the following problems: 1. Generating high-temperature steam requires heating water through a heating device. The water needs a lot of heat to change from liquid to gas, so the waiting time is long and cumbersome, requiring personnel to supervise; 2. The solubility of grease in high-temperature steam is not high, and relatively little grease can be detached from its attachment, making it difficult to shake off, so the self-cleaning effect is not good; 3. A large amount of water vapor will lead to high humidity in the kitchen, affecting the kitchen environment; 4. Because a large amount of water vapor needs to enter the cavity, the air inlet needs to be open, and grease is easy to fall and contaminate the stove during the process of being shaken off. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a range hood that improves the ability to remove grease, requires no user supervision, and avoids polluting the kitchen environment, in contrast to the above-mentioned prior art.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problem is as follows: a range hood, including a housing and a fan disposed inside the housing, characterized in that: it further includes...

[0005] The water ionization mechanism is located inside the casing and is used to spray electrolyzed water mist inside the fan.

[0006] A high-voltage power supply, located inside the casing and electrically connected to the fan, is used to generate a high-voltage electric field for the fan.

[0007] Preferably, the ionized water mechanism includes a housing for holding electrolyte, an atomizer mounted on the fan facing the inside of the fan, and a connecting pipe connecting the housing and the atomizer.

[0008] To facilitate the addition of water to the tank, the tank is located on the upper part of the casing. The front side of the casing has an opening for placing and removing the tank, and the opening is equipped with an openable and closable cover.

[0009] Preferably, the fan includes a volute with an air inlet, an impeller rotatably disposed inside the volute, and a motor disposed on the volute and drivenly connected to the impeller.

[0010] The two poles of the high-voltage power supply are electrically connected to the volute and the impeller, respectively.

[0011] Preferably, the front side of the housing has a smoke inlet, and the smoke inlet is provided with an openable and closable smoke baffle.

[0012] Preferably, an oil cup is provided at the bottom of the housing, and the bottom of the housing is connected to the oil cup.

[0013] In order to better guide the oil sludge output by the fan, a mounting plate is provided inside the housing to match the installation angle of the fan, and the fan is mounted on the mounting plate from the rear of the mounting plate.

[0014] The lower part of the mounting plate extends above the oil cup, and the bottom of the fan has an oil outlet for exposing oil stains.

[0015] Preferably, the lower part of the mounting plate is bent to form a horizontal plate above the oil cup, and the guide port is provided on the horizontal plate.

[0016] Compared with existing technologies, the advantages of this invention are as follows: The range hood of this invention, by incorporating an ionized water mechanism, can spray ionized water onto the volute and impeller during self-cleaning, causing the grease to undergo saponification and emulsification, thus better removing it from the components. Combined with the high-voltage electric field generated on the fan by a high-voltage power supply, the combination of electrolyzed water and grease carries a large amount of negative charge. Under the influence of the high-voltage electric field, the adhesion of the grease combination to the internal components of the range hood decreases, allowing the grease combination to be better and faster removed when the fan rotates, thereby achieving self-cleaning. Since there is no high-temperature condition during the self-cleaning process, no human supervision is required. Furthermore, the electrolyzed water only acts inside the fan and will not escape to the outside of the casing, avoiding pollution of the kitchen environment. Attached Figure Description

[0017] Figure 1 This is a diagram showing the internal structure of the range hood in an embodiment of this utility model.

[0018] Figure 2 This is a cross-sectional view of the range hood in an embodiment of this utility model. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1 and Figure 2 As shown, the range hood in this embodiment includes a housing 1, a fan 2, an ionized water mechanism 3, and a high-voltage power supply 4.

[0021] The front side of the casing 1 is usually provided with a smoke inlet, and the smoke inlet is also provided with an openable and closable smoke baffle 13. The smoke baffle 13 in this embodiment is the same as the smoke baffle 13 in the existing range hood. Based on functional requirements, it can be automatically opened and closed.

[0022] An oil cup 5 is located at the bottom of the housing 1, which is used to collect oil spilled from the range hood. The bottom of the housing 1 is connected to the oil cup 5, thereby allowing the oil inside the housing to be drained into the oil cup 5.

[0023] The fan 2 is installed inside the casing 1. To facilitate the installation of the fan 2 inside the casing 1 and to better guide the oil fumes entering the casing 1 into the fan 2 for final exhaust, a mounting plate 6 is provided inside the casing 1. The mounting plate 6 encloses the space in front of the fan 2 into a relatively enclosed space, allowing the incoming oil fumes to be gathered into the air inlet of the fan 2. Specifically, the mounting plate 6 is set to match the installation angle of the fan 2 inside the casing 1. The fan 2 is mounted on the mounting plate 6 from behind it. The mounting plate 6 has a pre-drilled mounting opening for the air inlet of the fan 2, allowing the oil fumes to smoothly enter the fan 2 through the air inlet.

[0024] The fan 2 in this embodiment includes a volute 21 with an air inlet, an impeller 22 rotatably disposed inside the volute 21, and a motor 23 disposed on the volute 21 and drivenly connected to the impeller 22. The motor 23 rotates based on a control signal, thereby driving the impeller 22 to rotate synchronously.

[0025] An ionization water mechanism 3 is installed inside the housing 1 and is used to spray electrolyzed water mist into the fan 2. In this embodiment, the ionization water mechanism 3 includes a housing 31 for holding electrolyte, an atomizer 32 mounted on the fan 2 facing inwards, and a connecting pipe 33 connecting the housing 31 and the atomizer 32. Whether a pump is installed inside the housing 31 is determined based on the relative height of the housing 31 and the atomizer 32. For example, if the housing 31 is higher than the atomizer 32, water can be naturally supplied to the atomizer 32 based on the height difference. However, if the housing 31 and the atomizer 32 are at approximately the same height, or if the housing 31 is lower than the atomizer 32, a pump is required to ensure the supply of electrolyte to the atomizer 32. Simultaneously, a water level sensor is installed inside the housing 31 and / or the atomizer 32 to detect the internal water level and promptly remind the user to add electrolyte to the housing 31. Without a water level sensor, users can add electrolyte to the housing 31 each time the range hood performs its self-cleaning cycle. The electrolyte can be a liquid that can be electrolyzed, such as water.

[0026] When a range hood is not an integrated product with other appliances, the housing 31 inside the range hood typically does not have the ability to automatically add electrolyte. Therefore, the user needs to manually add electrolyte. To facilitate electrolyte addition, the housing 31 is located on the upper part of the casing 1, outside the smoke inlet area isolated by the mounting plate 6. This avoids affecting the installation of other components and reduces oil contamination of the housing 31. The front side of the casing 1 has an opening 11 corresponding to the position of the housing 31, allowing for the removal and insertion of the housing 31. The opening 11 has an openable and closable cover 12. Opening the cover 12 allows the housing 31 to be pulled out of the casing 1, thus enabling the addition of electrolyte.

[0027] A high-voltage power supply 4 is housed inside the casing 1 and electrically connected to the fan 2. The high-voltage power supply 4 is used to generate a high-voltage electric field for the fan 2. Specifically, the two poles of the high-voltage power supply 4 are electrically connected to the volute 21 and the impeller 22, respectively. In this embodiment, the end of the high-voltage power supply 4 connected to the impeller 22 is the negative terminal, and the end connected to the volute 21 is the positive terminal. A high-voltage electric field is formed between the volute 21 and the impeller 22.

[0028] When the range hood is in self-cleaning mode, the smoke baffle 13 is closed, making the interior of the casing 1 relatively sealed. Electrolyzed water in the housing 31 is introduced into the atomizer 32 through the connecting pipe 33. The atomizer 32 atomizes the electrolyte and sprays the atomized electrolyte into the internal cavity of the fan 2, evenly adhering to the impeller 22 and the volute 21. After standing for a period of time, the grease will undergo saponification and emulsification in a strong alkaline environment, and begin to peel off from the parts. At this time, the high-voltage power supply 4 directly generates a high-voltage electric field to the impeller 22 and the volute 21, with the impeller 22 end as the negative pole and the volute 21 end as the positive pole. Because the combination of electrolyzed water and grease carries a large amount of negative charge, the adhesion between the combination and the impeller 22 decreases under the action of the high-voltage electric field. At this time, the motor 23 is turned on, and the electrolyzed water and grease on the impeller 22 will be quickly peeled off to the volute 21 due to centrifugal force. Since the volute 21 itself also adsorbs electrolyzed water, the stripped oil can no longer adhere to the volute 21 and will flow into the oil cup 5 along the volute 21.

[0029] To ensure that the dirt inside the volute 21 flows smoothly into the oil cup 5 after self-cleaning, the lower part of the mounting plate 6 extends above the oil cup 5. An oil outlet 20 is provided at the bottom of the fan 2 to expose the oil, i.e., this oil outlet 20 is located at the bottom of the volute 21. The lower part of the mounting plate 6 is bent to form a horizontal plate 61 above the oil cup 5, and a guide port 611 is provided on the horizontal plate 61. The oil can flow down the volute 21 to the lower part of the mounting plate 6, and then flow through the guide port 611 into the oil cup 5. This achieves the self-cleaning function of the range hood.

[0030] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of the invention. However, the use of these terms is merely for illustrative purposes and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this invention can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A range hood, comprising a housing (1) and a fan (2) disposed within the housing (1), characterized in that: Also includes An ionization water mechanism (3) is installed inside the casing (1) and is used to spray electrolyzed water mist inside the fan (2); A high-voltage power supply (4) is installed inside the casing (1) and electrically connected to the fan (2) to generate a high-voltage electric field for the fan (2).

2. The range hood according to claim 1, characterized in that: The ionized water mechanism (3) includes a housing (31) for holding electrolyte, an atomizer (32) facing the inside of the fan (2) and mounted on the fan (2), and a connecting pipe (33) connecting the housing (31) and the atomizer (32).

3. The range hood according to claim 2, characterized in that: The housing (31) is located on the upper part of the casing (1). The front side of the casing (1) is provided with an opening (11) for taking out and placing the housing (31) corresponding to the position of the housing (31). The opening (11) is provided with an openable and closable cover plate (12).

4. The range hood according to any one of claims 1 to 3, characterized in that: The fan (2) includes a volute (21), an impeller (22) rotatably disposed inside the volute (21), and a motor (23) disposed on the volute (21) and drivenly connected to the impeller (22); The two poles of the high-voltage power supply (4) are electrically connected to the volute (21) and the impeller (22), respectively.

5. The range hood according to any one of claims 1 to 3, characterized in that: The front side of the housing (1) is provided with a smoke inlet, and the smoke inlet is provided with an openable and closable smoke baffle (13).

6. The range hood according to any one of claims 1 to 3, characterized in that: An oil cup (5) is provided below the housing (1), and the bottom of the housing (1) is connected to the oil cup (5).

7. The range hood according to claim 6, characterized in that: The housing (1) is provided with a mounting plate (6) that matches the installation angle of the fan (2), and the fan (2) is mounted on the mounting plate (6) from behind the mounting plate (6); The lower part of the mounting plate (6) extends above the oil cup (5), and the bottom of the blower (2) is provided with an oil outlet (20) for oil to be exposed.

8. The range hood according to claim 7, characterized in that: The lower part of the mounting plate (6) is bent to form a horizontal plate (61) above the oil cup (5), and the guide port (611) is provided on the horizontal plate (61).

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