CN116972423A - Range hood and control method thereof - Google Patents
Range hood and control method thereof Download PDFInfo
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- CN116972423A CN116972423A CN202310872871.1A CN202310872871A CN116972423A CN 116972423 A CN116972423 A CN 116972423A CN 202310872871 A CN202310872871 A CN 202310872871A CN 116972423 A CN116972423 A CN 116972423A
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- condenser
- box body
- cleaning
- range hood
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000004140 cleaning Methods 0.000 claims abstract description 102
- 239000007921 spray Substances 0.000 claims abstract description 82
- 239000012530 fluid Substances 0.000 claims abstract description 14
- 238000004891 communication Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 213
- 238000005507 spraying Methods 0.000 claims description 52
- 230000017525 heat dissipation Effects 0.000 claims description 40
- 238000009826 distribution Methods 0.000 claims description 26
- 239000000779 smoke Substances 0.000 claims description 24
- 238000001816 cooling Methods 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 13
- 239000003595 mist Substances 0.000 claims description 13
- 238000005057 refrigeration Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 7
- 238000010411 cooking Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 2
- 239000013589 supplement Substances 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims 3
- 230000007246 mechanism Effects 0.000 description 12
- 239000003517 fume Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000003670 easy-to-clean Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000006233 lamp black Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2035—Arrangement or mounting of filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2057—Removing cooking fumes using a cleaning liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F13/222—Means for preventing condensation or evacuating condensate for evacuating condensate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0096—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater combined with domestic apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a range hood and a control method thereof, wherein the range hood comprises a first box body and a second box body arranged on the first box body, the front side of the first box body is provided with an air inlet, a fan frame in fluid communication with the first box body is arranged in the second box body, and a fan is arranged in the fan frame; the range hood further comprises a refrigerating device positioned outside the first box body and the fan frame, and the refrigerating device comprises a compressor, a condenser and an evaporator; the range hood further comprises a third box body arranged in front of the first box body, and the condenser comprises fins and a main radiating coil pipe which are arranged in the third box body; the extractor hood further includes a cleaning spray assembly that selectively sprays into the first tank or the fins.
Description
Technical Field
The invention relates to a lampblack purifying device, in particular to a range hood and a control method of the range hood.
Background
The kitchen is the main place that people cook, and the cooking experience is directly influenced by the kitchen air environment. In order to provide cold air for a kitchen in summer and warm air in winter, various air-conditioning type range hoods are invented, namely, an air-conditioning component and the range hood are integrated into a whole, and an air-conditioning air outlet is formed in a shell of the range hood. The air conditioner smoke machine can work in a plurality of different modes, and as long as the mode with the air conditioner is opened, cold air or hot air can be blown out from the air outlet of the air conditioner, and the air conditioner smoke machine can be directly blown to a cooker or can be blown into a kitchen, so that the cooking experience of the cooker is effectively improved.
At present, the heat dissipation of a condenser of a refrigeration system is generally achieved in two ways, one way is to use an independent fan to dissipate the heat of the condenser, and the two ways are divided into two ways: one is to use a common flue, and the exhaust heat dissipation needs a larger pressure to be discharged into the common flue, and an independent fan needs a larger size, so that the cost is high and the weight of the whole machine is heavy; another is that the separate punching for exhausting and radiating heat causes the problem of inconvenient installation, and the user does not want the wall surface of the room to be punched.
Still another type of refrigeration and oil fume extraction apparatus utilizing a range hood fan to dissipate heat from a condenser as disclosed in chinese patent application No. 201920460790.X includes: the oil smoke absorbing system, the refrigerating system and the shell are arranged in the cavity, the refrigerating system is provided with a cold air channel and an exhaust channel, the oil smoke absorbing system is provided with a smoke discharging channel, the refrigerating system is connected with an air outlet device, and the cold air channel is communicated with the air outlet device. The refrigerating range hood has the advantages that the condenser is arranged in the oil smoke channel, the condenser is radiated by utilizing the oil smoke air flow, the condenser is easy to be polluted for a long time, and the radiating efficiency of the condenser is reduced.
The condensed water of the refrigerating device is usually only radiated to the condenser and then discharged, and the condensed water is relatively large in quantity when the refrigerating device is used in wet summer, and if the refrigerating device cannot be timely discharged, the refrigerating device is stopped.
In addition, in the existing range hood, a filter screen is usually arranged at an air inlet, so that the pollution time of a fan system can be prolonged, manual cleaning is needed, and if the cleaning is not timely, the filter screen is blocked to influence the oil fume suction effect, and the fume leakage condition occurs.
Disclosure of Invention
The first technical problem to be solved by the invention is to provide the range hood aiming at the defects existing in the prior art, the fan of the range hood is utilized to radiate heat for the refrigerating device, no additional fan is needed, and the cooling and cleaning of the condenser and the inner cavity of the range hood can be realized.
The second technical problem to be solved by the invention is to provide a control method of the range hood aiming at the defects in the prior art.
The technical scheme adopted by the invention for solving the first technical problem is as follows: the range hood comprises a first box body and a second box body arranged on the first box body, wherein an air inlet is formed in the front side of the first box body, a fan frame in fluid communication with the first box body is arranged in the second box body, and a fan is arranged in the fan frame;
the range hood further comprises a refrigerating device positioned outside the first box body and the fan frame, and the refrigerating device comprises a compressor, a condenser and an evaporator; the method is characterized in that:
the range hood further comprises a third box body arranged in front of the first box body, and the condenser comprises fins and a main radiating coil pipe which are arranged in the third box body;
the extractor hood further includes a cleaning spray assembly that selectively sprays into the first tank or the fins.
The fan of the range hood is used for radiating heat for the condenser of the refrigerating device, a radiating fan is not required to be additionally arranged, and the oil smoke does not flow through the condenser and cannot pollute the condenser to cause the refrigeration efficiency to be reduced; the cleaning spray component can realize cooling and cleaning, can cool and clean the condenser, can purify oil smoke, realize cleaning of the inner cavity of the range hood, improve the refrigerating efficiency of the refrigerating device and reduce the wind resistance of the inner cavity of the range hood.
Further, the cleaning spraying assembly comprises a water spraying piece and a spraying piece which can rotate relatively, the water spraying piece is communicated with a water source and provided with a first nozzle, the spraying piece is provided with a second nozzle, and the second nozzle is in a slit shape; the water spray and the spray are at least cooperatively in the following modes:
water column mode: the first nozzle and the second nozzle are staggered, and water is directly sprayed by the first nozzle;
water mist mode: the first nozzle and the second nozzle are overlapped, and water is sprayed through the first nozzle and the second nozzle in sequence.
Therefore, in the water column mode, the spraying amount is large, the cleaning can be better performed, and in the water mist mode, the spraying amount and the flow velocity are small, and the cooling can be better performed.
Further, the cleaning spray assembly further comprises a frame, a guide pipe and a rotating shaft, wherein the frame is provided with an opening part, a notch is formed in the rear side wall of the third box body so as to be provided with the frame, the frame can rotate relative to the third box body, and the notch on the third box body is kept closed in the rotating process; the water spraying piece is arranged on the guide pipe and is communicated with fluid in the guide pipe, the guide pipe is fixed with the frame, and the first nozzle faces to the opening part of the frame;
the spraying piece is arranged on a rotating shaft, and the rotating shaft is rotationally connected with the frame.
Therefore, the spraying direction can be changed, the cleaning spraying assembly can be positioned in the non-working state oil smoke-free cavity, and the situation that the nozzle is blocked is avoided.
Further, the cleaning spray assembly further comprises a water inlet pipe communicated with a water source, the guide pipe is connected with the water inlet pipe, the water inlet pipe is penetrated by one end portion of the frame, the end portion of the frame is provided with a water pipe storage groove, and a part of the water inlet pipe is stored in the water pipe storage groove, so that the water inlet pipe can be prevented from winding.
Further, be provided with the water box subassembly that is used for accepting the comdenstion water of condenser in the third box below that is located the condenser, the water box subassembly includes water box and water pump, water pump and water spray intercommunication, but make full use of comdenstion water from this, need shut down when avoiding the volume of comdenstion water to surpass the throughput of complete machine and carry out drainage work.
Further, a water baffle is further arranged below the condenser in the third box body, is positioned above the water box assembly and gradually inclines downwards from front to back, and therefore condensed water can be guided to enter the water box.
Further, be provided with the filter screen in the first box, the condenser still includes auxiliary heat dissipation coil, auxiliary heat dissipation coil sets up in the upper and lower position setting of filter screen, auxiliary heat dissipation coil's one end links to each other with the main heat dissipation coil of condenser and the other end links to each other with the compressor, and the filter screen can also utilize the temperature rise of condenser to exchange heat from this, realizes the easy cleanness of filter screen.
Further, a filter screen is arranged in the first box body, the condenser further comprises an auxiliary heat dissipation coil pipe, the auxiliary heat dissipation coil pipe is arranged at the upper and lower positions of the filter screen, one end of the auxiliary heat dissipation coil pipe is connected with a main heat dissipation coil pipe of the condenser, and the other end of the auxiliary heat dissipation coil pipe is connected with the compressor; the cleaning spray component is arranged between the filter screen and the fins of the condenser and can spray towards the direction of the filter screen, so that the condenser can utilize the process of fume exhaust of the range hood to conduct auxiliary heat dissipation, the filter screen can also utilize the temperature rise of the condenser to conduct heat exchange, the filter screen is easy to clean, the filter screen can be cleaned by utilizing condensed water, and an additional heating module is not needed.
Preferably, the compressor and the evaporator are arranged in a second box body, a cold air outlet for blowing cold air after heat exchange with the evaporator is formed in the front side of the second box body, and an air inlet for supplementing air to the evaporator is formed in the top of the second box body.
In order to cool the condenser by utilizing the condensed water of the evaporator, a condensed water gathering groove which is recessed downwards is formed at the lower edge of the cold air outlet in the second box body, a liquid distributor which is used for spraying the received condensed water from the evaporator onto fins of the condenser is arranged below the evaporator, and the condensed water gathering groove is communicated with the liquid distributor through a water pipe.
Further, for making the cloth liquid even, the cloth liquid ware includes the casing and sets up the orifice plate in the casing, the orifice plate is by the state of left and right sides to middle gradually upwards slope, the water pipe corresponds the highest department of orifice plate, the water leakage hole has been seted up to the bottom of casing.
Further, the bottom of the fan frame extends to the bottom of the second box, and the bottom of the fan frame is matched with the top of the first box, so that oil smoke is prevented from leaking to the space outside the fan frame in the second box, and the refrigerating device is polluted.
Further, for in being convenient for guide oil smoke gets into the fan fast, the fan frame includes fan frame upper portion and fan frame lower part, the fan frame lower part is from bottom to top by the state that left and right sides to middle slope gradually.
Further, the refrigerating device also comprises a flow distribution plate arranged below the fins of the condenser, and the third box body comprises an air supplementing port and a valve which enables communication between the third box body and the fan frame when the condenser dissipates heat;
the flow distribution plate is arranged at a position corresponding to the air supply port, through holes are formed in the flow distribution plate, the areas of the through holes on the left side and the right side are minimum, and the areas of the through holes in the middle are maximum. Because the air that the air supply mouth was mended passes through the flow distribution board from left and right sides, because the area that overflows in the middle of the flow distribution board is big, the area that overflows from left and right sides is little, can be with cold wind even distribution on the condenser like this, improve the radiating efficiency of condenser, and then improved refrigerating plant's refrigeration efficiency.
Further, the flow distribution plate is positioned below the cleaning spray assembly, so that the water spraying piece and the spraying piece of the cleaning spray assembly can rotate to spray the flow distribution plate, and the cleaning spray assembly can cool the flow distribution plate.
The first technical scheme adopted by the invention for solving the second technical problem is as follows: the heat dissipation control method of the range hood is characterized by comprising the following steps of: the method comprises the following steps:
1) The range hood is started, whether the refrigerating device is refrigerating or not is judged, and if yes, the step 2) is carried out;
2) The current temperature T of the condenser is collected, and then the working condition of the refrigerating device at the moment is judged:
2.1 If T < T 0 ，T 0 The refrigerating device continues to keep running under the existing working condition at the preset normal working temperature of the condenser, and then the heat dissipation control program is ended;
2.2 If T) 0 ＜T≤T 1 ，T 1 Judging whether cooking is performed at the moment when the cooling threshold value is the preset cooling threshold value of the condenser, if yes, entering the step 2.2.1), and if not, entering the step 2.2.2);
2.2.1 Judging whether the oil smoke concentration reaches a preset threshold CF, if so, starting a cleaning spray assembly, spraying water mist on the upper part of the filter screen, and returning to the step 2); if not, enter step 2.2.2);
2.2.2 Starting a cleaning spray assembly, cooling the water spray of the condenser, and then repeating the step 2);
2.3 If T > T 1 The refrigerating device is in overheat protection, the cleaning spray assembly is started to cool down the water mist sprayed on the fins of the condenser, then whether the cooling device is still in an overheat protection state is judged, if yes, the cleaning spray assembly is started, so that the cleaning spray assembly finishes once spraying and cooling down the condensers in the first box body and the third box body, and then the step 2) is repeated; if not, repeating the step 2).
The second technical scheme adopted by the invention for solving the second technical problem is as follows: the filter screen cleaning control method of the range hood is characterized by comprising the following steps of: a water box assembly for receiving condensed water of the condenser is arranged in the third box body, and comprises a water box and a water pump, and the water pump is communicated with the water spraying piece;
the filter screen cleaning control method comprises the following steps:
1) Firstly, judging the pollution degree of the filter screen, and carrying out corresponding operation according to the detected pollution degree:
1.1 If the air quantity Q is smaller than Q 0 Q is the air loss passing through the filter screen (13), Q 0 The cleaning control program is ended for the first preset air quantity value;
1.2 If Q 0 ＜Q≤Q 1 ，Q 1 Determining whether to clean the filter screen or not according to whether the second preset air quantity value is in a season of starting the refrigerating device or not; 1.3 If Q > Q 1 And after the water temperature of the water box reaches the preset cleaning temperature Tx, cleaning the spray water column of the filter screen.
Preferably, in step 1.2), if the season is in which the refrigerating apparatus is on, step 1.2.1) is entered, and if not, step 1.2.2) is entered; 1.2.1 Detecting the water temperature in the water box and judging the ambient temperature, if the water temperature is the same as the ambient temperature, waiting for the next starting of the refrigerating device and judging the temperature, and if the water temperature is higher than the ambient temperature, entering the step 1.2.2); 1.2.2 A cleaning spray assembly is started to clean the filter screen spray water column, and the cleaning control program is finished.
Preferably, in step 1.3), it is determined whether the refrigerating apparatus is in a season in which the refrigerating apparatus is turned on, if yes, step 1.3.1) is entered, and if no, step 1.3.2) is entered;
1.3.1 If the water temperature in the water box reaches the preset cleaning temperature Tx, starting a cleaning spray assembly to clean the spray water column of the filter screen, and ending the cleaning control program; if not, waiting for the next starting of the refrigerating device and then judging the temperature;
1.3.2 If the water temperature in the water box reaches the preset cleaning temperature Tx, starting a cleaning spray assembly to clean the spray water column of the filter screen, and ending the cleaning control program; if not, the refrigerating device is started, the filter screen is heated by utilizing heat of the condenser, and when the temperature of the condenser is higher than the preset heating temperature Ty, the cleaning spray assembly is started to clean the spraying water column of the condenser, the temperature of condensed water collected by the water box is improved until the water temperature in the water box reaches the preset cleaning temperature Tx, and then the cleaning spray assembly is started to clean the spraying water column of the filter screen.
Compared with the prior art, the invention has the advantages that: the fan of the range hood is used for radiating heat for the condenser of the refrigerating device, a radiating fan is not required to be additionally arranged, and the oil smoke does not flow through the condenser and cannot pollute the condenser to cause the refrigeration efficiency to be reduced; the cleaning spray component can realize cooling and cleaning, can cool and clean the condenser, can purify oil smoke, realize cleaning of the inner cavity of the range hood, improve the refrigerating efficiency of the refrigerating device and reduce the wind resistance of the inner cavity of the range hood; the condenser can utilize the process of range hood oil smoke to carry out auxiliary heat dissipation to the filter screen can also utilize the temperature rise of condenser to carry out heat transfer, realizes the easy cleanness of filter screen, and the washing usable comdenstion water of filter screen need not extra heating module moreover, and the utilization ratio of comdenstion water is higher from this, not only can purify the oil smoke but also can cool down and wash filter screen and condenser to the condenser.
Drawings
Fig. 1 is a schematic view of a range hood according to an embodiment of the present invention;
fig. 2 is a schematic view of the range hood of fig. 1 hiding the front side walls of the second and third cases;
fig. 3 is a schematic view of the range hood of fig. 1 concealing the front side wall of the second housing, the evaporator and the water tubes;
fig. 4 is a cross-sectional view of a range hood according to an embodiment of the present invention;
FIG. 5 is an enlarged schematic view of portion I of FIG. 4;
fig. 6 is a schematic view of a water box assembly of a range hood according to an embodiment of the present invention;
fig. 7 is a schematic view of a liquid distributor of the range hood according to an embodiment of the present invention;
fig. 8 is a schematic view of a cleaning spray assembly of a range hood according to an embodiment of the present invention;
FIG. 9 is an enlarged schematic view of portion II of FIG. 8;
FIG. 10 is an enlarged schematic view of portion III of FIG. 8;
fig. 11 is a schematic view of a water spraying baffle plate and a rotating shaft thereof of a cleaning spray assembly of a range hood according to an embodiment of the present invention;
fig. 12 is a partial schematic view of a cleaning filter pattern of a range hood according to an embodiment of the present invention;
FIG. 13 is an enlarged schematic view of the portion IV of FIG. 12;
fig. 14 is a schematic view of a part of a range hood according to an embodiment of the present invention;
fig. 15 is an enlarged schematic view of part v of fig. 14;
fig. 16 is a partial schematic view of a cleaning condenser fin pattern of a range hood according to an embodiment of the present invention;
FIG. 17 is an enlarged schematic view of the portion VI of FIG. 16;
fig. 18 is a partial schematic view of a condenser cooling mode of the range hood according to an embodiment of the present invention;
FIG. 19 is an enlarged schematic view of the portion VII of FIG. 18;
fig. 20 is a schematic view showing a cleaning flow distribution plate mode of a range hood according to an embodiment of the present invention;
FIG. 21 is an enlarged schematic view of a portion VIII of FIG. 20;
fig. 22 is a control flow chart of a heat dissipation method of a range hood according to an embodiment of the present invention;
fig. 23 is a control flow chart of the screen cleaning of the range hood according to the embodiment of the invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for purposes of describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and because the disclosed embodiments of the present invention may be arranged in different orientations, these directional terms are merely for illustration and should not be construed as limitations, such as "upper", "lower" are not necessarily limited to orientations opposite or coincident with the direction of gravity. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly.
Referring to fig. 1 to 11, a range hood includes a first casing 1, a second casing 2 disposed above the first casing 1, and a third casing 3 disposed at a front side of the first casing 1. The three boxes can be of an integral structure or a split structure.
Wherein, air intake 11 has been seted up to first box 1 front side for inhale the oil smoke, air intake 11 department is provided with and keeps off smoke board 12, can overturn and open and close air intake 11. A fan frame 21 is arranged in the second box body 2, a fan 22 is arranged in the fan frame 21, the bottom of the fan frame 21 extends to the bottom of the second box body 2 and is communicated with the fluid in the first box body 1, and the top of the fan frame 21 extends to the top of the second box body 2. The bottom of the fan frame 21 is adapted to the top of the first housing 1 such that the cooking fumes from the first housing 1 can only enter the fan frame 21. The fan frame 21 includes a fan frame upper portion 211 and a fan frame lower portion 212, the fan frame upper portion 211 may be rectangular, and the fan frame lower portion 212 may be gradually inclined from the left side to the right side from bottom to top to the middle, so that the fume flow from the first case 1 may be guided to rapidly enter the fan frame upper portion 211.
The range hood further comprises a refrigerating device, comprising a compressor 41, a condenser assembly 42 and an evaporator 43, wherein a refrigerant circulation passage is formed among the compressor 41, the condenser assembly 42 and the evaporator 43, so that refrigeration is performed in the same way as the prior art. Wherein the compressor 41 and the evaporator 43 may be placed in the second housing 2 and both are located outside the fan frame 21. The front side of the second casing 2 is provided with a cool air outlet 23, and the evaporator 43 is provided corresponding to the cool air outlet 23. The top front side of the second casing 2 may be provided with an air inlet 24 to supplement air to the evaporator 43 for heat exchange.
The condenser assembly 42 includes a condenser 421, a mounting bracket 422 and a flow distribution plate 423, the condenser 421 is mounted in the third housing 3 by the mounting bracket 422, the condenser 421 includes fins 4211, a main heat dissipation coil 4212 and an auxiliary heat dissipation coil 4213, and the main heat dissipation coil 4212 is used for dissipating heat from the fins 4211. Fins 4211 and main radiator coils 4212 are disposed in the third housing 3 to be isolated from the oil smoke. The flow distribution plate 423 is disposed below the fins 4211 of the condenser 421, through holes 4231 are formed in the flow distribution plate 423, the areas of the through holes 4231 on the left and right sides are the smallest, and the areas of the through holes 4231 in the middle are the largest. The air supply ports 34 may be formed at the left and right sides of the third casing 3, so that air may be supplied into the third casing 3 by the blower 22, the condenser 421 may be cooled, and the valve 35 may be disposed at the top of the third casing 3, so that the third casing 3 may be opened to be in fluid communication with the blower housing 21 during heat dissipation.
The position of the flow distribution plate 423 may correspond to the air supply port 31, and when the flow distribution plate 423 is in a horizontal state, the air supply port 34 is located below the flow distribution plate 423, and the supplied air needs to reach the condenser 421 through the flow distribution plate 423. Above the condenser 421 is a valve 32 which is rotatably opened and closed to allow or disconnect fluid communication between the third casing 3 and the fan frame 21. When the condenser 421 needs to dissipate heat, once the fan 22 is started, a negative pressure area is formed at the lower end of the fan 22, and the valve 32 is pushed open by the external atmospheric pressure, so that the heat dissipation of the condenser 421 is realized. When the blower 22 is stopped, the valve 32 is closed under the action of gravity to prevent the soot from flowing backward. In the process of heat dissipation, the flow distribution plate 423 is in a horizontal state, and because the air flow enters from left to right, if the flow distribution plate 523 is not arranged, the air supply can blow through the fins 4211 of the condenser 421 from the left and right nearest positions, and the air quantity at the middle position is small, so that the middle flow area of the flow distribution plate 423 is large, the left and right flow area is small, cold air is uniformly distributed on the condenser 421, the heat dissipation efficiency of the condenser 421 is improved, and the refrigeration efficiency of the refrigerating device is further improved.
The condensed water gathering tank 25 which is concave downwards is formed at the lower edge of the cold air outlet 23 in the second box body 2, a liquid distributor 44 is arranged below the evaporator 43, and the liquid distributor 44 is arranged above the condenser 421. The liquid distributor 44 and the condensed water collecting tank 25 are connected by a water pipe 26 to realize fluid communication. The liquid distributor 44 includes a casing 441 and an orifice 442 disposed in the casing 441, the orifice 442 is gradually inclined upwards from the left side and the right side to the middle, the water pipe 26 can correspond to the highest position of the orifice 442, and a water leakage hole 443 is formed at the bottom of the casing 441. Accordingly, condensed water entering the housing 441 from the water pipe 26 can be relatively uniformly distributed through the orifice plate 442, and flows to the bottom of the housing 441, and flows to the fins 4211 of the condenser 421 through the water leakage holes 443, thereby cooling the fins 4211, and improving the cooling efficiency of the refrigerating device.
The water baffle 31 and the water box assembly 32 are arranged below the condenser 421 in the third box body 3, the water baffle 31 gradually inclines downwards from front to back, the water box assembly 32 comprises a water box 321, a water temperature sensor 322 and a water pump 323, and the water temperature sensor 322 is arranged in the water box 321. For condensed water near the rear side to flow directly into the water box 321, external condensed water flows onto the water baffle 31 first and then is guided backward into the water box 321. The water box 321 is at least partially located at the rear side of the water baffle 31, and the water baffle 31 and the water box 321 are placed in a staggered manner, so that air can conveniently circulate to the condenser 421 for heat dissipation.
A filter screen 13 is disposed in the first casing 1, the filter screen 13 is disposed below the fan frame 21, and the auxiliary heat dissipation coil 4213 of the condenser 421 is disposed above and below the filter screen 13. A plurality of sets of wind speed sensors (not shown) may be disposed at upper and lower positions of the filter screen 13 to detect clogging of the filter screen 13. The auxiliary radiator 4213 of the condenser 421 is connected at one end to the main radiator 4212 of the condenser 421 and at the other end to the compressor 41, i.e. in series between the compressor 41 and the main radiator 4212 of the condenser. The auxiliary heat dissipation coil 4213 has the function that when the refrigerating device works, on one hand, the auxiliary heat dissipation coil 4213 can be utilized to dissipate heat of the fins 4211 when the range hood discharges smoke, on the other hand, the refrigerating device refrigerates, so that the condenser 421 can be caused to be at high temperature, the high-temperature auxiliary heat dissipation coil 4213 can radiate heat of the filter screen 13, the fluidity of grease is increased, and the cleaning and maintenance period of the filter screen 13 is prolonged.
A purge spray assembly 5 is also provided at a location between the condenser 421 and the screen 13, which is also located above the flow distributor plate 423 of the condenser assembly 42. The cleaning spray assembly 5 includes a spray member 51, a spray member 52, a frame 53, a first drive mechanism 54, and a second drive mechanism 55. Wherein, the frame 53 may have a semi-cylindrical shape with an opening 531, and a notch 33 may be opened on a rear sidewall of the third casing 3 to provide the frame 53, and the frame 53 may rotate relative to the third casing 3 and keep closing the notch 33 on the third casing 3 during rotation. The water spraying members 51 have at least two, left and right, spaced apart, each water spraying member 51 being provided on the duct 56 and being in fluid communication with the duct 56, left and right ends of the duct 56 being connected to the frame 53, respectively. The cleaning spray assembly 5 further comprises a water inlet tube 57, and the conduit 56 and the water inlet tube 57 may be of unitary construction. The water inlet pipe 57 is penetrated by one of the ends of the frame 53, and a water pipe receiving groove 532 may be provided at the end of the frame 53. The water inlet pipe 57 is a hose connected to the water pump 323, and when the frame 53 rotates, a portion of the water inlet pipe 57 is located in the water pipe receiving groove 532, so that interference during rotation does not occur. Each water spraying piece 51 can be in an arch shape or a semi-ring shape protruding towards a direction away from the guide pipe 56, one side of the water spraying piece away from the guide pipe 56 is provided with first nozzles 511, the first nozzles 511 are at least three of which are arranged at intervals left and right, wherein the first nozzles 511 in the middle are perpendicular to the opening of the water spraying piece 51, the first nozzles 511 on the left side are inclined towards the left side, and the first nozzles 511 on the right side are inclined towards the right side, so that a wide range of cleaning can be realized. The portion of the first nozzle 511 that opens toward the frame 53.
The spray member 52 is disposed within the frame 53 and may be in the shape of an arc of a circle having a curvature in a direction consistent with the frame 53. The spraying member 52 has at least two spraying members arranged at a left-right interval, one end of which is fixed on the rotating shaft 58, both ends of the rotating shaft 58 are respectively connected with both ends of the frame 53, and the end of the spraying member 52 far from the rotating shaft 58 is provided with a second nozzle 521, and the second nozzle 521 is in a slit shape.
The first driving mechanism 54 is used for driving the frame 53 to rotate, and the second driving mechanism 55 is used for driving the rotating shaft 58 to rotate, and the rotating axes of the guide pipe 56 and the rotating shaft 58 extend in the left-right direction, so that the cleaning spray assembly 5 can switch between a water mist mode and a water column mode and switch a spraying object. When the water mist needs to be sprayed, the second driving mechanism 55 drives the rotating shaft 58 to rotate, and when the second nozzle 521 on the spraying member 52 is overlapped with the first nozzle 511 of the spraying member 51, the water mist is sprayed. The spray member 52 may be made of a resilient rubber material to provide a seal during contact between the two parts, see fig. 14 and 15. When the water column needs to be sprayed, the second driving mechanism 55 drives the rotating shaft 58 to rotate, and when the second nozzle 521 on the spraying piece 52 is staggered from the first nozzle 511 of the spraying piece 51, the water column is directly sprayed from the first nozzle 511.
Referring to fig. 12 and 13, when it is necessary to clean the screen 13, the first driving mechanism 54 drives the frame 53 to rotate so that the opening 531 thereof faces the screen 13 on the rear side, and so that the spray member 52 is rotated to be in the water column mode, which also enables cleaning of the inside of the first casing 1; referring to fig. 14 and 15, when it is necessary to purify the oil smoke, the first driving mechanism 54 drives the screen 13 of which the opening 531 of the frame 53 is directed to the rear side, and rotates the atomizer 52 to be in the water mist mode; referring to fig. 16 and 17, when it is necessary to clean the fins 4211 of the condenser 421, the first driving mechanism 54 drives the opening 531 of the frame 53 forward and the first nozzle 511 upward, and rotates the spray member 52 to be in the water column mode; referring to fig. 18 and 19, when it is necessary to cool down the fins 4211 of the condenser 421, the first driving mechanism 54 drives the opening 531 of the frame 53 forward and makes the first nozzle 511 upward, and rotates the spray member 52 to be in the water mist mode; referring to fig. 20 and 21, when the flow distribution plate 423 is required to be cleaned, the first driving mechanism 54 drives the opening 531 of the frame 53 downward, and the first nozzle 511 downward, and rotates the spraying member 52 to be in the water column mode.
When the cleaning spray assembly 5 is not in operation, the opening 531 of the frame 53 faces forward, away from the screen 13, to avoid the soot clogging the first nozzle 511 and the second nozzle 521. The water source for cleaning the spray assembly 5 is from the condensate water discharged from the evaporator 43 without the need for additional water.
Referring to fig. 21, the condenser heat dissipation control method of the range hood of the present invention comprises the steps of:
1) The range hood is started, whether the refrigerating device is refrigerating or not is judged, and if yes, the step 2) is carried out;
2) The current temperature T of the condenser 421 is acquired through the temperature sensor of the condenser 421, and then the working condition of the refrigerating device at the moment is judged:
2.1 If T < T 0 ，T 0 At the preset normal working temperature of the condenser 421, the refrigerating device is used for normal efficiency refrigeration, intervention and heat dissipation are not needed, the operation of the existing working condition is kept continuously, and then the program is ended;
2.2 If T) 0 ＜T≤T 1 ，T 1 If the cooling device is in low-efficiency refrigeration, judging whether the cooling device is in cooking again, if yes, entering the step 2.2.1), and if not, entering the step 2.2.2);
2.2.1 Judging whether the oil smoke concentration reaches a preset threshold CF, if so, starting the cleaning spray assembly 5, spraying water mist on the upper part of the filter screen 13 to quicken oil smoke sedimentation, and cooling the fins 4211 of the condenser 421 by the auxiliary heat dissipation coil 4213 below the filter screen 13, so that on one hand, the purifying effect can be improved, the refrigerating efficiency of the refrigerating device can also be improved, and then returning to the step 2); if not, enter step 2.2.2);
2.2.2 Starting the cleaning spray assembly 5, cooling the condenser 421, and then repeating the step 2);
2.3 If T > T 1 Then the refrigerating device is in overheat protection and does not refrigerate any more, then the cleaning spray assembly 5 is started, the first driving mechanism 54 drives the frame 53 to rotate, the condenser 421 is cooled, and the primary spray heat dissipation of the condenser 421 is completed; then, it is judged whether the overheat protection state is still maintained, if so, the cleaning spray assembly 5 is started so that the frame 53 is rotated one turn, the auxiliary heat radiation coil 4213 under the filter screen 13 is radiated at the rear side when the opening portion 531 thereof is directed backward, and the condenser 4 is radiated at the front side when the opening portion 531 thereof is directed forward21, and then repeating step 2), if not, repeating step 2).
The preset threshold T 0 、T 1 And CF are data obtained by preliminary test, optionally T 0 20-25 DEG, T 1 45-50 DEG, and the value of CF is 15-20 mg/m 3 。
Referring to fig. 22, the method for controlling the cleaning of the filter screen of the range hood according to the present invention comprises the steps of:
1) Firstly, judging the pollution degree of the filter screen 13, wherein the pollution degree of the filter screen 13 can be detected by a wind speed sensor at the wind speed loss change rate of the upper and lower positions of the filter screen, and the wind speed loss Q (wind speed multiplied by cross section area) is calculated through the wind speed loss, so that the pollution state of the filter screen is judged, and corresponding operation is carried out according to the detected pollution degree:
1.1 If the air quantity Q is smaller than Q 0 The filter screen 13 is considered to be not blocked or has no influence on the fume suction effect, and the treatment is not needed at this time, and the process is finished;
1.2 If Q 0 ＜Q≤Q 1 At this time, the system can judge that the system is slightly blocked, then judge whether the system is in a season for starting the refrigerating device, mainly judge through month time set by a range hood system and detecting ambient temperature, if the system is in summer, the system is judged to be in a season for starting the refrigerating device, then enter the step 1.2.1), if the system is not in the season, then enter the step 1.2.2);
1.2.1 Detecting the water temperature in the water box 321 and judging the ambient temperature, if the water temperature is the same as the ambient temperature, waiting for the next starting of the refrigerating device and judging the temperature, and if the water temperature is higher than the ambient temperature, entering the step 1.2.2);
1.2.2 Starting the cleaning spray assembly 5 to clean the filter screen 13, wherein the function of the cleaning spray assembly is to fully utilize condensed water to flow through the condenser 421 for heat exchange, and the cleaning effect of the filter screen 13 is enhanced by improving the water temperature, so that the cleaning process is finished;
1.3 If Q > Q 1 At this time, it can be judged that the refrigerating device is heavy blocked, then whether the refrigerating device is in a season or not is judged, the judging mode is the same as the step 1.2), if yes, the step 1.3.1) is carried out, and if no, the step 1.3 is carried out.2)；
1.3.1 If the water temperature in the water box 321 reaches Tx, starting the cleaning spray assembly 5 to clean the filter screen 13 and ending; if not, waiting for the next starting of the refrigerating device and then judging the temperature;
1.3.2 If the water temperature in the water box 321 reaches Tx, starting the cleaning spray assembly 5 to clean the filter screen 13 and ending; if not, the refrigerating device is started, the heat dissipation channel of the condenser 421 is closed, namely the air supply port 34 and the valve 35 are closed, the filter screen 13 is heated by utilizing the heat of the condenser 421, and when the temperature of the condenser 421 is higher than the preset heating temperature Ty, the cleaning spray assembly 5 is started to clean the spraying water column of the condenser 421, the temperature of condensed water collected by the water box 321 is increased until the water temperature in the water box 321 reaches the preset cleaning temperature Tx, and then the cleaning spray assembly 5 is started to clean the spraying water column of the filter screen 13.
In the above step, Q 0 For a preset first preset air quantity value, the optional air quantity is 1m 3 /min，Q 1 For a preset second preset air quantity value, the optional air quantity is 3m 3 The value of Tx is a preset cleaning temperature, the temperature is the temperature at which the oil on the filter screen is easy to clean, 60-70 ℃ can be taken, and Ty is optionally 60 ℃.
The term "fluid communication" as used herein refers to a spatial positional relationship between two components or parts (hereinafter collectively referred to as a first part and a second part, respectively), that is, a fluid (gas, liquid, or a mixture of both) can flow along a flow path from the first part to the second part or/and be transported to the second part, or the first part and the second part may be directly communicated with each other, or the first part and the second part may be indirectly communicated with each other through at least one third party, and the third party may be a fluid channel such as a pipe, a channel, a conduit, a flow guiding member, a hole, a groove, or the like, or a chamber allowing the fluid to flow through, or a combination thereof.
Claims (19)
1. The range hood comprises a first box body (1) and a second box body (2) arranged on the first box body (1), wherein an air inlet (11) is formed in the front side of the first box body (1), a fan frame (21) in fluid communication with the first box body (1) is arranged in the second box body (2), and a fan (22) is arranged in the fan frame (21);
the range hood further comprises a refrigerating device which is positioned outside the first box body (1) and the fan frame (21), and the refrigerating device comprises a compressor (41), a condenser (421) and an evaporator (43); the method is characterized in that:
the range hood further comprises a third box body (3) arranged in front of the first box body (1), and the condenser (421) comprises fins (4211) and a main radiating coil (4212) which are arranged in the third box body (3);
the range hood further comprises a cleaning spray assembly (5), and the cleaning spray assembly (5) is used for selectively spraying into the first box body (1) or the fins (4211).
2. The range hood of claim 1, wherein: the cleaning spraying assembly (5) comprises a water spraying piece (51) and a spraying piece (52) which can rotate relatively, the water spraying piece (51) is communicated with a water source and provided with a first nozzle (511), the spraying piece (52) is provided with a second nozzle (521), and the second nozzle (521) is in a slit shape; the spray member (51) and the spray member (52) are at least matably in the following modes:
water column mode: the first nozzle (511) is staggered with the second nozzle (521), and water is directly sprayed by the first nozzle (511);
water mist mode: the first nozzle (511) and the second nozzle (521) are overlapped, and water is sprayed through the first nozzle (511) and the second nozzle (521) in sequence.
3. The range hood of claim 2, wherein: the cleaning spray assembly (5) further comprises a frame (53), a guide pipe (56) and a rotating shaft (58), wherein the frame (53) is provided with an opening (531), a notch (33) is formed in the rear side wall of the third box body (3) so as to be provided with the frame (53), the frame (53) can rotate relative to the third box body (3), and the notch (33) in the third box body (3) can be kept closed in the rotating process; the water spraying piece (51) is arranged on the guide pipe (56) and is communicated with fluid in the guide pipe (56), the guide pipe (56) is fixed with the frame (53), and the first nozzle (511) faces to an opening part (531) of the frame (53);
the spraying piece (52) is arranged on a rotating shaft (58), and the rotating shaft (58) is rotatably connected with the frame (53).
4. A range hood according to claim 3, wherein: the cleaning spray assembly (5) further comprises a water inlet pipe (57) communicated with a water source, the guide pipe (56) is connected with the water inlet pipe (57), the water inlet pipe (57) is penetrated by one end portion of the frame (53), the end portion of the frame (53) is provided with a water pipe accommodating groove (532), and a part of the water inlet pipe (57) is accommodated in the water pipe accommodating groove (532).
5. The range hood of claim 2, wherein: the water box assembly (32) used for receiving condensed water of the condenser (421) is arranged below the condenser (421) in the third box body (3), the water box assembly (32) comprises a water box (321) and a water pump (323), and the water pump (323) is communicated with the water spraying piece (51).
6. The range hood of claim 5, wherein: the water box is characterized in that a water baffle (31) is further arranged below the condenser (421) in the third box body (3), the water baffle (31) is arranged above the water box assembly (32), the water baffle (31) gradually inclines downwards from front to back, and the water box (321) is at least partially arranged at the rear side of the water baffle (31).
7. The range hood of claim 1, wherein: be provided with filter screen (13) in first box (1), condenser (421) still includes auxiliary heat dissipation coil (4213), auxiliary heat dissipation coil (4213) set up in the upper and lower position setting of filter screen (13), the one end of auxiliary heat dissipation coil (4213) links to each other with main heat dissipation coil (4212) of condenser (421) and the other end links to each other with compressor (41).
8. The range hood of claim 2, wherein: a filter screen (13) is arranged in the first box body (1), the condenser (421) further comprises an auxiliary radiating coil (4213), the auxiliary radiating coil (4213) is arranged at the upper and lower positions of the filter screen (13), one end of the auxiliary radiating coil (4213) is connected with a main radiating coil (4212) of the condenser (421), and the other end of the auxiliary radiating coil is connected with the compressor (41); the cleaning spray assembly (5) is arranged between the filter screen (13) and the fins (4211) of the condenser (421) and can spray towards the filter screen (13).
9. The range hood according to any one of claims 1 to 8, wherein: the compressor (41) and the evaporator (43) are arranged in the second box body (2), a cold air outlet (23) for blowing cold air after heat exchange with the evaporator (43) is formed in the front side of the second box body (2), and an air inlet (24) for air supplement of the evaporator (43) is formed in the top of the second box body (2).
10. The range hood of claim 9, wherein: the condensate water collecting tank (25) which is recessed downwards is formed at the lower edge of the cold air outlet (23) in the second tank body (2), a liquid distributor (44) which is used for spraying the received condensate water from the evaporator (43) onto fins (4211) of the condenser (421) is arranged below the evaporator (43), and the condensate water collecting tank (25) is communicated with the liquid distributor (44) through a water pipe (26).
11. The range hood of claim 10, wherein: the liquid distributor (44) comprises a shell (441) and a pore plate (442) arranged in the shell (441), wherein the pore plate (442) is gradually inclined upwards from the left side to the right side to the middle, the water pipe (26) corresponds to the highest position of the pore plate (442), and a water leakage hole (443) is formed in the bottom of the shell (441).
12. The range hood according to any one of claims 1 to 8, wherein: the bottom of the fan frame (21) extends to the bottom of the second box body (2), and the bottom of the fan frame (21) is matched with the top of the first box body (1).
13. The range hood of claim 12, wherein: the fan frame (21) comprises a fan frame upper portion (211) and a fan frame lower portion (212), and the fan frame lower portion (212) is in a gradually inclined state from left and right sides to the middle from bottom to top.
14. The range hood according to any one of claims 1 to 8, wherein: the refrigerating device further comprises a flow distribution plate (423) arranged below the fins (4211) of the condenser (421), and the third box body (3) comprises an air supplementing port (34) and a valve (35) which enables communication between the third box body (3) and the fan frame (21) when the condenser (421) dissipates heat;
the flow distribution plate (423) is arranged at a position corresponding to the air supply port (34), through holes (4231) are formed in the flow distribution plate (423), the areas of the through holes (4231) on the left side and the right side are minimum, and the area of the through hole (4231) in the middle is maximum.
15. The range hood of claim 14, wherein: the flow distribution plate (423) is positioned below the cleaning spray assembly (5) so that the water spray member (51) and the spray member (52) of the cleaning spray assembly (5) can be rotated to spray the flow distribution plate (423).
16. The heat dissipation control method of a range hood according to claim 8, wherein: the method comprises the following steps:
1) The range hood is started, whether the refrigerating device is refrigerating or not is judged, and if yes, the step 2) is carried out;
2) The current temperature T of the condenser (421) is collected, and then the working condition of the refrigerating device at the moment is judged:
2.1 If T < T 0 ，T 0 For the normal working temperature of the preset condenser (421), the refrigerating device keeps running under the existing working condition, and then the heat dissipation control program is ended;
2.2 If T) 0 ＜T≤T 1 ，T 1 Judging whether cooking is in progress at the moment when the heat dissipation threshold value of the condenser (421) is preset, if yes, entering the step 2.2.1), and if not, entering the stepStep 2.2.2);
2.2.1 Judging whether the oil smoke concentration reaches a preset threshold CF, if so, starting a cleaning spray assembly (5), spraying water mist on the upper part of a filter screen (13), and then returning to the step 2); if not, enter step 2.2.2);
2.2.2 Starting a cleaning spray assembly (5), cooling the water spray of the condenser (421), and then repeating the step 2);
2.3 If T > T 1 The refrigerating device is in overheat protection, the cleaning spray assembly (5) is started to cool the water spray mist of the fins (4211) of the condenser (421), then whether the refrigerating device is still in an overheat protection state is judged, if yes, the cleaning spray assembly (5) is started, the cleaning spray assembly (5) is enabled to spray and cool the condenser (421) in the first box body (1) and the third box body (3) once, and then the step (2) is repeated; if not, repeating the step 2).
17. The method for controlling the cleaning of the filter screen of the range hood according to claim 8, wherein: a water box assembly (32) for receiving condensed water of the condenser (421) is arranged in the third box body (3), the water box assembly (32) comprises a water box (321) and a water pump (323), and the water pump (323) is communicated with the water spraying piece (51);
the filter screen cleaning control method comprises the following steps:
1) Firstly, judging the pollution degree of the filter screen (13), and carrying out corresponding operation according to the detected pollution degree:
1.1 If the air quantity Q is smaller than Q 0 Q is the air loss passing through the filter screen (13), Q 0 The cleaning control program is ended for the first preset air quantity value;
1.2 If Q 0 ＜Q≤Q 1 ，Q 1 Determining whether to clean the filter screen (13) for a second preset air volume value according to whether the refrigerating device is in a season;
1.3 If Q > Q 1 And after the water temperature of the water box (321) reaches the preset cleaning temperature Tx, the filter screen (13) is sprayed with water columns for cleaning.
18. The method for controlling the cleaning of the filter screen of the range hood according to claim 17, wherein: in step 1.2), if in the season of turning on the refrigeration unit, step 1.2.1) is entered, and if not, step 1.2.2) is entered;
1.2.1 Detecting the water temperature in the water box (321) and judging the ambient temperature, if the water temperature is the same as the ambient temperature, waiting for the next starting of the refrigerating device and judging the temperature, and if the water temperature is higher than the ambient temperature, entering the step 1.2.2);
1.2.2 And (3) starting the cleaning spray assembly (5), cleaning the filter screen (13) by spraying the water column, and ending the cleaning control program.
19. The method for controlling the cleaning of the filter screen of the range hood according to claim 17, wherein: in the step 1.3), judging whether the refrigerating device is in a season of starting the refrigerating device, if yes, entering the step 1.3.1), and if not, entering the step 1.3.2);
1.3.1 If the water temperature in the water box (321) reaches the preset cleaning temperature Tx, starting the cleaning spraying component (5) to clean the water column sprayed by the filter screen (13), and ending the cleaning control program; if not, waiting for the next starting of the refrigerating device and then judging the temperature;
1.3.2 If the water temperature in the water box (321) reaches the preset cleaning temperature Tx, starting the cleaning spraying component (5) to clean the water column sprayed by the filter screen (13), and ending the cleaning control program; if not, the refrigerating device is started, the filter screen (13) is heated by utilizing the heat of the condenser (421), and when the temperature of the condenser (421) is higher than the preset heating temperature Ty, the cleaning spray assembly (5) is started to clean the water column sprayed by the condenser (421), the temperature of condensed water collected by the water box (321) is increased until the water temperature in the water box (321) reaches the preset cleaning temperature Tx, and then the cleaning spray assembly (5) is started to clean the water column sprayed by the filter screen (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310872871.1A CN116972423A (en) | 2023-07-14 | 2023-07-14 | Range hood and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310872871.1A CN116972423A (en) | 2023-07-14 | 2023-07-14 | Range hood and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116972423A true CN116972423A (en) | 2023-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310872871.1A Pending CN116972423A (en) | 2023-07-14 | 2023-07-14 | Range hood and control method thereof |
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| Country | Link |
|---|---|
| CN (1) | CN116972423A (en) |
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2023
- 2023-07-14 CN CN202310872871.1A patent/CN116972423A/en active Pending
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