A centrifugal fan with oil-proof and high-temperature resistant structure

Abstract

The invention discloses a centrifugal fan with an oil-proof and high-temperature resistant structure, and relates to the technical field of centrifugal fans, a fan unit, a cooling unit, and an oil removal unit. The fan unit includes a base, a top plate is fixedly installed on the top of the base, a support plate is fixedly installed on the top of the top plate, a fan housing is fixedly installed on the top of the support plate, a connecting bracket is rotatably installed on one side of the fan housing, and a blade is fixedly installed on one side of the connecting bracket. The heat exchanger of the invention generates heat to exchange heat with a water storage bottle, thereby heating the cleaning liquid inside the water storage bottle, sucking the heated cleaning liquid inside the water storage bottle through a water pump, and inputting it into a high-pressure nozzle through a water pipe, and spraying the heated cleaning liquid at high pressure through the high-pressure nozzle. After the high-pressure nozzle sprays the heated cleaning liquid on all the blades, the blades are accelerated by a first motor, and under the action of high-speed centrifugal force, the oil decomposed by the cleaning liquid is thrown into the oil guide groove, and flows along the oil guide groove into the oil receiving box.

Description

Technical Field

[0001] The invention relates to the technical field of centrifugal fans, in particular to a centrifugal fan with an oil-proof and high-temperature-resistant structure. Background Art

[0002] A centrifugal fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draft of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selection of grains; inflation and propulsion of wind tunnel wind sources and hovercraft, etc. Centrifugal fans are also widely used in range hoods.

[0003] When a centrifugal fan is used in a range hood, oil will stick to the blades. When the oil on the blades accumulates to a certain level, the centrifugal fan will produce noise, reduce suction, and have problems such as oil odor. The current centrifugal fan has a poor automatic cleaning effect for oil, and usually uses a filter to block the oil, and cleans the oil by spraying pure water on the blades. However, the oil cleaning power and the oil fume blocking effect are poor, and there is still a lot of oil residue on the blades. Therefore, it can be improved. Summary of the invention

[0004] The purpose of the present invention is to make up for the deficiencies of the prior art and to provide a centrifugal fan with an oil-proof and high-temperature resistant structure.

[0005] To achieve the above object, the present invention provides the following technical solution: A centrifugal fan with an oil-proof and high-temperature resistant structure includes a fan unit, a cooling unit, and an oil removal unit: The fan unit includes a base, a top plate is fixedly installed on the top of the base, a support plate is fixedly installed on the top of the top plate, a fan housing is fixedly installed on the top of the support plate, a connecting bracket is rotatably installed on one side of the fan housing, a blade is fixedly installed on one side of the connecting bracket, a suction pipe is fixedly connected to one side of the fan housing, an oil receiving box is fixedly connected to the bottom of the fan housing, a magnet is fixedly installed inside the support plate, a first motor output shaft is fixedly installed on one side of the connecting bracket, one side of the first motor is fixedly installed on the fan housing, and an oil guide groove is opened inside the fan housing; The cooling unit comprises an evaporator, the evaporator is fixedly installed inside the air suction pipe, one side of the evaporator is fixedly connected to a first pipe, one side of the evaporator is fixedly connected to a second pipe, the bottom of the second pipe is fixedly connected to an expansion valve, the bottom of the air suction pipe and below the evaporator is fixedly connected to an oil receiving plate, the bottom of the oil receiving plate is threadedly mounted with an oil receiving bottle, the top of the oil receiving bottle is connected to the oil receiving plate, one end of the first pipe is fixedly connected to a compressor, the top of the top plate is provided with a fan assembly, and one end of the compressor is fixedly connected to a heat exchanger; The oil removal unit includes a water storage bottle, which is fixedly installed on the top of the top plate, the top of the water storage bottle is fixedly connected to a hopper, a cover is threadedly installed on the top of the hopper, a water pump suction end is inserted into the water storage bottle, a water pump outlet end is fixedly connected to a water pipe, a second fixed plate is fixedly installed on the outer wall of the water pipe, and one end of the water pipe is fixedly connected to a high-pressure nozzle.

[0006] As a preferred solution of the present invention, the oil collecting box is slidably mounted on the inner wall of the support plate, and a handle is fixedly mounted on one side of the oil collecting box.

[0007] As a preferred solution of the present invention, a rectangular groove is opened inside the support plate, and the magnet is fixedly installed with the support plate through the rectangular groove, and the magnet is magnetically matched with the outer wall of the oil receiving box.

[0008] As a preferred solution of the present invention, the compressor is fixedly installed on the top of the top plate, the expansion valve is fixedly installed on the top of the top plate, and the expansion valve is fixedly connected to one end of the heat exchanger.

[0009] As a preferred solution of the present invention, the fan assembly includes a vertical plate, which is fixedly installed on the top of the top plate. Two fans are rotatably installed inside the vertical plate. A pulley is fixedly installed on one side of the two fans, a second motor output end is fixedly installed on one side of one of the pulleys, and a transmission wheel is commonly sleeved on the outer walls of the two pulleys.

[0010] As a preferred solution of the present invention, the water pump is fixedly installed on the top of the water storage bottle, and a rubber ring is fixedly installed on the outer wall of the cover.

[0011] As a preferred solution of the present invention, the water suction end of the water pump is located at the lower part of the water storage bottle, and the second fixing plate is fixedly installed on one side of the fan housing.

[0012] As a preferred solution of the present invention, the heat exchanger is attached to one side of the water storage bottle, and the nozzle of the high-pressure nozzle is directly opposite to one side of the blade.

[0013] Compared with the prior art, the centrifugal fan with oil-proof and high-temperature resistant structure has the following beneficial effects: 1. The oil smoke of the present invention is stained on the blades, which leads to problems such as increased noise of the blades and reduced working efficiency. When the evaporator is used for cooling, the heat exchanger will generate heat and exchange heat with the water bottle, thereby heating the cleaning liquid inside the water bottle. The heated cleaning liquid inside the water bottle is sucked by the water pump and input into the high-pressure nozzle through the water pipe. The heated cleaning liquid is sprayed out by the high-pressure nozzle at high pressure, and at the same time, the first motor drives the blades to rotate at a low speed. After the high-pressure nozzle has sprayed the heated cleaning liquid on all the blades, the blades are accelerated by the first motor. Under the action of high-speed centrifugal force, the oil decomposed by the cleaning liquid is thrown into the oil guide groove and flows along the oil guide groove to the oil receiving box, completing the cleaning and collection of the oil. By cleaning the oil on the blades, the blades can be maintained so that the blades can still maintain high-efficiency operation in a high-temperature and oily working environment, avoiding the odor caused by the oil and the problems of low working efficiency and high noise emitted by the blades.

[0014] 2. The present invention outputs power through the first motor to drive the connecting bracket and the blades to rotate, thereby sucking air from the suction pipe and outputting it from one side of the fan casing to form a suction power. After the suction pipe sucks in hot air with oil smoke, the hot air is cooled by the evaporator. At the same time, the oil smoke will solidify into oil blocks on the evaporator, which plays a role in blocking the oil smoke and cooling the hot air. The temperature of the inhaled air is reduced by the evaporator, and the oil smoke is assisted in blocking, so that less oil smoke is stained on the blades, and at the same time, the damage to the blades caused by high temperature can be reduced.

[0015] 3. In the present invention, when the accumulated oil smoke on the evaporator reaches a certain level, the compressor is reversely output to input the pressurized high-temperature condensate into the evaporator. The heat exchanger is used as an evaporator, and air is output to the heat exchanger through two fans, so that the heat exchanger can absorb heat in the air and input it into the evaporator. The solidified oil on the evaporator is melted by heating the evaporator, and the melted solidified oil drips into the oil receiving plate, which is collected by the oil receiving plate and input into the oil receiving bottle. The oil in the oil receiving bottle can be dumped by unscrewing the oil receiving bottle, so that the oil stains blocked on the evaporator can be easily cleaned and collected. Other advantages, objectives and features of the present invention will be set forth in part in the following description and, in part, will be apparent to those skilled in the art based on an examination of the following or may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 A top view of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the cross section at point A; Figure 4 For the present invention Figure 1 The enlarged structural diagram at B in the middle; Figure 5 For the present invention Figure 1 Schematic diagram of the structure after rotating a certain angle; Figure 6 For the present invention Figure 5 The enlarged structural diagram at C in the middle; Figure 7 For the present invention Figure 1 Schematic diagram of the structure after rotation at a certain angle.

[0017] In the figure: 100, fan unit; 200, cooling unit; 300, oil removal unit; 101, base; 102, top plate; 103, fan housing; 104, blades; 105, connecting bracket; 106, air suction pipe; 107, oil receiving box; 108, magnet; 109, support plate; 110, first motor; 111, oil guide groove; 201, evaporator; 202, first pipeline; 203, second pipeline; 204, expansion valve; 205, Oil receiving plate; 206, oil receiving bottle; 207, compressor; 208, fan assembly; 208-1, vertical plate; 208-2, fan; 208-3, second motor; 208-4, pulley; 208-5, first fixed plate; 208-6, transmission wheel; 209, heat exchanger; 301, water storage bottle; 302, hopper; 303, cover; 304, water pump; 305, water pipe; 306, second fixed plate; 307, high-pressure nozzle. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figure 1-7 As shown, the present invention provides a technical solution: including a fan unit 100, a cooling unit 200, and an oil removal unit 300: The fan unit 100 includes a base 101, a top plate 102 is fixedly mounted on the top of the base 101, a support plate 109 is fixedly mounted on the top of the top plate 102, a fan housing 103 is fixedly mounted on the top of the support plate 109, a connecting bracket 105 is rotatably mounted on one side of the fan housing 103, a blade 104 is fixedly mounted on one side of the connecting bracket 105, and the connecting bracket 105 serves to connect all the blades 104 together, a suction pipe 106 is fixedly connected to one side of the fan housing 103, an oil receiving box 107 is fixedly connected to the bottom of the fan housing 103, a magnet 108 is fixedly mounted inside the support plate 109, an output shaft of a first motor 110 is fixedly mounted on one side of the connecting bracket 105, one side of the first motor 110 is fixedly mounted on the fan housing 103, an oil guide groove 111 is provided inside the fan housing 103, and the provision of the oil guide groove 111 can facilitate the flow of oil into the oil receiving box 107; The cooling unit 200 includes an evaporator 201, which is composed of a plurality of pipes and is located in the air suction pipe 106 (see Figure 7 ), the evaporator 201 is fixedly installed inside the air suction pipe 106, one side of the evaporator 201 is fixedly connected to the first pipe 202, one side of the evaporator 201 is fixedly connected to the second pipe 203, the bottom of the second pipe 203 is fixedly connected to the expansion valve 204, the expansion valve 204 plays a role in quickly reducing the pressure and gasifying the high-temperature and high-pressure condensate, the bottom of the air suction pipe 106 and below the evaporator 201 is fixedly connected to an oil receiving plate 205, the bottom of the oil receiving plate 205 is threadedly installed with an oil receiving bottle 206, the top of the oil receiving bottle 206 is connected to the oil receiving plate 205, the oil is collected through the oil receiving plate 205, and is input into the oil receiving bottle 206, one end of the first pipe 202 is fixedly connected to the compressor 207, the top of the top plate 102 is provided with a fan assembly 208, and one end of the compressor 207 is fixedly connected to a heat exchanger 209; The oil removal unit 300 includes a water bottle 301, which is fixedly installed on the top of the top plate 102. The top of the water bottle 301 is fixedly connected to a hopper 302, and a cover 303 is threadedly installed on the top of the hopper 302. The cover 303 can conveniently add cleaning liquid to the water bottle 301. A water suction end of a water pump 304 is plugged into the inside of the water bottle 301, and a water outlet end of the water pump 304 is fixedly connected to a water pipe 305. A second fixed plate 306 is fixedly installed on the outer wall of the water pipe 305. One end of the water pipe 305 is fixedly connected to a high-pressure nozzle 307, and the high-pressure nozzle 307 can spray the cleaning liquid inside the water bottle 301 in the form of high pressure.

[0020] According to the overall structure of the device, the oil stains on the blades 104 can be cleaned and maintained so that the blades 104 can still maintain high-efficiency operation in a high-temperature and oily working environment, avoiding the odor caused by the oil stains and the high noise of the blades 104. The evaporator 201 can be used to reduce the temperature of the inhaled air and assist in blocking the oil smoke, so that the blades 104 are stained with less oil smoke. At the same time, the damage to the blades 104 caused by high temperature can be reduced, and the oil stains blocked on the evaporator 201 can be conveniently cleaned and collected.

[0021] like Figure 1 and Figure 3 As shown, the oil receiving box 107 is slidably mounted on the inner wall of the support plate 109 , and a handle is fixedly mounted on one side of the oil receiving box 107 .

[0022] The design of the sliding installation and the handle makes it convenient for a person to manually take out the oil receiving box 107 and dump the accumulated oil inside the oil receiving box 107.

[0023] like Figure 1 As shown, a rectangular groove is provided inside the support plate 109 , and the magnet 108 is fixedly installed with the support plate 109 through the rectangular groove, and the magnet 108 is magnetically matched with the outer wall of the oil receiving box 107 .

[0024] By using the magnetic attraction arrangement, the position of the oil receiving box 107 can be stabilized so that the position will not change due to non-human influences.

[0025] like Figure 5 and Figure 7 As shown, the compressor 207 is fixedly installed on the top of the top plate 102 , the expansion valve 204 is fixedly installed on the top of the top plate 102 , and the expansion valve 204 is fixedly connected to one end of the heat exchanger 209 .

[0026] By stabilizing the position of the compressor 207, the compressor 207 is facilitated to pass through. At the same time, the expansion valve 204 is connected to the heat exchanger 209 so that the internal condensate can circulate. The connecting pipe between the expansion valve 204 and the heat exchanger 209 is located in the gap between the top plate 102 and the base 101.

[0027] like Figure 1 and Figure 4As shown, the fan assembly 208 includes a vertical plate 208-1, which is fixedly installed on the top of the top plate 102. Two fans 208-2 are rotatably installed inside the vertical plate 208-1. A pulley 208-4 is fixedly installed on one side of the two fans 208-2. The output end of the second motor 208-3 is fixedly installed on one side of one of the pulleys 208-4. The outer wall of the second motor 208-3 is fixedly installed with a first fixed plate 208-5. The other end of the first fixed plate 208-5 is fixedly installed on the vertical plate 208-1. The outer walls of the two pulleys 208-4 are jointly sleeved with a transmission wheel 208-6.

[0028] The fan 208 - 2 can accelerate the air flow, thereby accelerating the heat exchange efficiency and improving the work efficiency.

[0029] like Figure 1 and Figure 2 As shown, the water pump 304 is fixedly installed on the top of the water storage bottle 301, and a rubber ring is fixedly installed on the outer wall of the cover 303; The rubber ring increases the friction between the rubber ring and the human hand, so that the cover 303 can be easily rotated and opened.

[0030] like Figure 1 and Figure 2 As shown, the water suction end of the water pump 304 is located at the lower part of the water storage bottle 301, and the second fixing plate 306 is fixedly installed on one side of the fan housing 103. The water suction end of the water pump 304 is arranged at the lower part of the water storage bottle 301 , so that when the water level in the water storage bottle 301 is low, the water inside the water storage bottle 301 can still be sucked in through the water pump 304 .

[0031] like Figure 1 , Figure 2 and Figure 4 As shown, the heat exchanger 209 is attached to one side of the water storage bottle 301 , and the nozzle of the high-pressure nozzle 307 is facing one side of the blade 104 .

[0032] The heated cleaning liquid can be sprayed out in a high-pressure form through the high-pressure nozzle 307 , thereby cleaning the oil stains on the blades 104 .

[0033] Working principle: First, the first motor 110 outputs power to drive the connecting bracket 105 and the blade 104 to rotate, so that air is sucked in from the suction pipe 106 and output from one side of the fan housing 103, forming a suction power. After the suction pipe 106 sucks in the hot air with oil smoke, the hot air is cooled by the evaporator 201. At the same time, the oil smoke will solidify into oil blocks on the evaporator 201, which plays a role in blocking the oil smoke and cooling the hot air. When the evaporator 201 is cooled, the condensate is pressurized and liquefied by the compressor 207 and input to the heat exchanger 209. The heat exchanger 209 cooperates with the water storage bottle 301 to perform heat exchange. At the same time, the second motor 208-3 drives the two fans 208-2 to rotate, accelerating the air flow to cooperate with the heat exchange. The condensate then enters the expansion valve 204. The high-temperature and high-pressure condensate is quickly depressurized through the capillary in the expansion valve 204, so that it vaporizes and evaporates to take away the heat and is input to the evaporator 201. At this time, the temperature of the evaporator 201 is much lower than the ambient temperature, thereby playing a role in cooling the inhaled hot air and blocking part of the oil smoke. When the accumulated oil smoke on the evaporator 201 reaches a certain level, the compressor 207 outputs in reverse, and the pressurized high-temperature condensate is input to the evaporator 201. The heat exchanger 209 is used as an evaporator, and air is output to the heat exchanger 209 through two fans 208-2, so that the heat exchanger 209 can absorb heat in the air and input it to the evaporator 201. The solidified oil on the evaporator 201 is melted by heating the evaporator 201, and the melted solidified oil drips into the oil receiving plate 205, and the oil is collected by the oil receiving plate 205 and input into the oil receiving bottle 206. The oil receiving bottle 206 can be unscrewed to dump the oil inside the oil receiving bottle 206. Even if there is an obstruction of the evaporator 201, there will still be oil smoke on the blades 104, causing the blades 104 to become noisier and the working efficiency to become lower. When the first motor 110 is working and the evaporator 201 is used for cooling, the heat exchanger 209 will generate heat and exchange heat with the water bottle 301, thereby heating the cleaning liquid inside the water bottle 301. The heated cleaning liquid inside the water bottle 301 is sucked by the water pump 304 and input to the high-pressure nozzle 307 through the water pipe 305. The heated cleaning liquid is sprayed out by the high-pressure nozzle 307 at high pressure. At the same time, the first motor 110 drives the blades 104 to rotate at a low speed. After the high-pressure nozzle 307 sprays the heated cleaning liquid on all the blades 104, the blades 104 are accelerated by the first motor 110. Under the action of high-speed centrifugal force, the oil decomposed by the cleaning liquid is thrown into the oil guide groove 111 and flows along the oil guide groove 111 to the oil receiving box 107, completing the cleaning and collection of the oil.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A centrifugal fan with an oil-proof and high-temperature resistant structure, comprising a fan unit (100), a cooling unit (200), and an oil removal unit (300), characterized in that: The fan unit (100) comprises a base (101), a top plate (102) is fixedly mounted on the top of the base (101), a support plate (109) is fixedly mounted on the top of the top plate (102), a fan casing (103) is fixedly mounted on the top of the support plate (109), a connecting bracket (105) is rotatably mounted on one side of the fan casing (103), a blade (104) is fixedly mounted on one side of the connecting bracket (105), an air suction pipe (106) is fixedly connected to one side of the fan casing (103), an oil receiving box (107) is fixedly connected to the bottom of the fan casing (103), a magnet (108) is fixedly mounted inside the support plate (109), an output shaft of a first motor (110) is fixedly mounted on one side of the connecting bracket (105), one side of the first motor (110) is fixedly mounted on the fan casing (103), and an oil guide groove (111) is provided inside the fan casing (103); The cooling unit (200) comprises an evaporator (201), the evaporator (201) being fixedly mounted inside an air suction pipe (106), a first pipe (202) being fixedly connected to one side of the evaporator (201), a second pipe (203) being fixedly connected to one side of the evaporator (201), an expansion valve (204) being fixedly connected to the bottom of the second pipe (203), an oil receiving plate (205) being fixedly connected to the bottom of the air suction pipe (106) and located below the evaporator (201), an oil receiving bottle (206) being threadedly mounted to the bottom of the oil receiving plate (205), the top of the oil receiving bottle (206) being connected to the oil receiving plate (205), a compressor (207) being fixedly connected to one end of the first pipe (202), a fan assembly (208) being provided on the top of the top plate (102), and a heat exchanger (209) being fixedly connected to one end of the compressor (207); The oil removal unit (300) comprises a water storage bottle (301), the water storage bottle (301) being fixedly mounted on the top of the top plate (102), the top of the water storage bottle (301) being fixedly connected to a feed hopper (302), the top of the feed hopper (302) being threadedly mounted with a cover (303), the water suction end of a water pump (304) being plugged into the interior of the water storage bottle (301), the water outlet end of the water pump (304) being fixedly connected to a water pipe (305), a second fixing plate (306) being fixedly mounted on the outer wall of the water pipe (305), and one end of the water pipe (305) being fixedly connected to a high-pressure nozzle (307).

2. The centrifugal fan with oil-proof and high-temperature resistant structure according to claim 1, characterized in that: The oil receiving box (107) is slidably mounted on the inner wall of the support plate (109), and a handle is fixedly mounted on one side of the oil receiving box (107).

3. The centrifugal fan with oil-proof and high-temperature-resistant structure according to claim 1, characterized in that: A rectangular groove is provided inside the support plate (109), and the magnet (108) is fixedly mounted on the support plate (109) through the rectangular groove. The magnet (108) is magnetically matched with the outer wall of the oil receiving box (107).

4. The centrifugal fan with oil-proof and high-temperature-resistant structure according to claim 1, characterized in that: The compressor (207) is fixedly mounted on the top of the top plate (102), the expansion valve (204) is fixedly mounted on the top of the top plate (102), and the expansion valve (204) is fixedly connected to one end of the heat exchanger (209).

5. The centrifugal fan with oil-proof and high-temperature-resistant structure according to claim 1, characterized in that: The fan assembly (208) comprises a vertical plate (208-1), wherein the vertical plate (208-1) is fixedly mounted on the top of the top plate (102), and two fans (208-2) are rotatably mounted inside the vertical plate (208-1), and a pulley (208-4) is fixedly mounted on one side of the two fans (208-2), and a second motor (208-3) output end is fixedly mounted on one side of one of the pulleys (208-4), and a first fixed plate (208-5) is fixedly mounted on the outer wall of the second motor (208-3), and the other end of the first fixed plate (208-5) is fixedly mounted on the vertical plate (208-1), and a transmission wheel (208-6) is commonly sleeved on the outer walls of the two pulleys (208-4).

6. The centrifugal fan with oil-proof and high-temperature-resistant structure according to claim 1, characterized in that: The water pump (304) is fixedly mounted on the top of the water storage bottle (301), and a rubber ring is fixedly mounted on the outer wall of the cover (303).

7. The centrifugal fan with oil-proof and high-temperature-resistant structure according to claim 1, characterized in that: The water suction end of the water pump (304) is located at the lower part of the water storage bottle (301), and the second fixing plate (306) is fixedly mounted on one side of the fan housing (103).

8. The centrifugal fan with oil-proof and high-temperature-resistant structure according to claim 1, characterized in that: The heat exchanger (209) is attached to one side of the water storage bottle (301), and the spray outlet of the high-pressure spray head (307) is directly opposite to one side of the blade (104).

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