CN116336527A - Range hood and self-cleaning control method thereof - Google Patents
Range hood and self-cleaning control method thereof Download PDFInfo
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- CN116336527A CN116336527A CN202310128893.7A CN202310128893A CN116336527A CN 116336527 A CN116336527 A CN 116336527A CN 202310128893 A CN202310128893 A CN 202310128893A CN 116336527 A CN116336527 A CN 116336527A
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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
- F24C15/2057—Removing cooking fumes using a cleaning liquid
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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
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Abstract
The invention discloses a range hood and a self-cleaning control method thereof, wherein the range hood comprises a fan system and a cleaning device for cleaning the fan system, the cleaning device comprises a waterway device, and the waterway device comprises a heating module for heating a cleaning medium and a nozzle for spraying the cleaning medium flowing out of the heating module to the fan system for cleaning; the waterway device further comprises a heat exchanger, and the heat exchanger is arranged at the upstream of the heating module on the flow path of the cleaning medium; the cleaning device further comprises a heat pump device comprising an evaporator, a condenser and a compressor forming a circuit, the condenser being adapted to provide a heat source to the heat exchanger. Compared with the prior art, the invention has the advantages that: the heat pump technology is adopted, the energy efficiency of the heat pump technology is higher, the heat in the air is utilized, and the energy saving effect is realized.
Description
Technical Field
The invention relates to a lampblack purifying device, in particular to a range hood and a self-cleaning control method of the range hood.
Background
The range hood has become one of the indispensable kitchen appliances in modern families. The range hood works by utilizing the fluid dynamics principle, and the range hood sucks the oil fume through a fan system arranged in the range hood and filters part of grease particles by using a filter screen. The fan system is usually a centrifugal fan and comprises a volute, an impeller arranged in the volute and a motor for driving the impeller to rotate, when the impeller rotates, negative pressure suction is generated at the center of the fan, oil smoke below the range hood is sucked into the fan, and the oil smoke is collected by the volute after being accelerated by the fan and is guided to be discharged outside.
After the range hood is used for a long time, a large amount of oil dirt can be accumulated in the fan system, so that the impeller is increased in weight, the air quantity is reduced, the noise is increased, the oil smoke absorbing effect is poor, even the oil dirt is accumulated and deteriorated for a long time, peculiar smell is generated, and the kitchen environment is influenced; at present, main cleaning technologies are technologies such as upper door cleaning service, steam cleaning, hot water cleaning, heating and melting, and the like, cleaning objects are mainly impellers, and volute cleaning is less.
The above-described cleaning methods have the following disadvantages:
1) Door cleaning service: the cleaning is carried out by paying extra cost, the smoke machine is disassembled, the condition that the smoke machine is assembled in place sometimes occurs after the disassembly and the reassembly, the whole machine is in fault, the noise and the smoking effect are poor, and in addition, the cleaning usually adopts a strong alkali solution, so that the operators and the machines are damaged;
2) Steam cleaning: steam cleaning often requires an additional heating module to heat water until the water is discharged, but in order to generate steam, a high-power heater is required to be used for configuring a program of intermittent water supply so as to ensure that the steam is generated, and under the condition of low water temperature, the steam is generated after a long time of heating, and the conventional technology adopts a timing mode of water supply for a second and stopping for b seconds, which cannot change along with water temperature change, so that the heating module cannot adapt to water temperature in winter and summer, steam cannot be discharged or the purity of the steam is insufficient, and the cleaning effect is poor; in order to ensure the rapid generation and purity of steam, the power is often high, the power consumption is high, the load of a power panel is high, and overload phenomenon is easy to occur; the cleaning strength is high enough by pure steam cleaning, but the cleaning distance is limited, so that the cleaning distance cannot act on the volute;
3) And (3) hot water cleaning: the impeller is cleaned by using continuous water jet, and in order to rapidly heat the water passing through the cavity, a heating module with larger power is also required, so that the problems of power consumption and overload of a power panel are caused, and in addition, the cleaning strength of the pure water jet is poor;
4) Heating and melting: the high-power heating wire is used, the high-power heating wire is not directly applied to the impeller, oil stains on the impeller are melted through heat radiation, the effect is worse, no medium is directly applied to the cleaning surface, oil is melted only through heating and conducting radiation, and the energy consumption is increased.
Therefore, the cleaning technology of the range hood needs to be further improved.
Disclosure of Invention
The first technical problem to be solved by the invention is to provide a range hood which can reduce the requirement on the power of a heating module and realize energy conservation aiming at the defects existing in the prior art.
The second technical problem to be solved by the invention is to provide a self-cleaning control method using the range hood.
The technical scheme adopted by the invention for solving the first technical problem is as follows: the range hood comprises a fan system and a cleaning device for cleaning the fan system, wherein the cleaning device comprises a waterway device, and the waterway device comprises a heating module for heating a cleaning medium and a nozzle for spraying the cleaning medium flowing out of the heating module to the fan system for cleaning; the method is characterized in that:
the waterway device further comprises a heat exchanger, and the heat exchanger is arranged at the upstream of the heating module on the flow path of the cleaning medium;
the cleaning device further comprises a heat pump device comprising an evaporator, a condenser and a compressor forming a circuit, the condenser being adapted to provide a heat source to the heat exchanger.
The heat pump technology is adopted, the energy efficiency of the heat pump technology is higher, one part of electricity is used, which is equivalent to 3-4 times of electric energy for heating, and the heat in the air is utilized, so that the energy-saving effect is realized; the heat pump technology is energy-saving, the heating module heats water to generate steam, the requirement on the power of the heating module is reduced, the power of the heater is low, the energy-saving effect is realized as a whole, and the load of the power panel is greatly reduced.
For being convenient for provide the cleaning medium, waterway device still includes water storage box and the water pump that is used for storing the cleaning medium, through advancing water piping connection between water storage box and the water pump, the liquid outlet of water pump is connected to the heat exchanger through first water pipe, still be connected with the wet return between heat exchanger and the water storage box, the heat exchanger communicates with heating module and water storage box selectivity respectively.
In order to realize among the waterway device, the switching of waterway in heat exchanger department, waterway device still includes first valve, the liquid outlet of heat exchanger is connected with the inlet of first valve through the second connecting water pipe, the liquid outlet of first valve is connected to heating module's inlet through the third connecting water pipe one way and is connected to the water storage box through the wet return on the other way, makes the heat exchanger communicate with heating module and water storage box selectivity respectively from this.
In order to improve heat exchange efficiency, the heat exchanger is a copper pipe which is circularly and equidistantly arranged and is wrapped and clamped in the middle of the condenser.
Further, the fan system comprises a volute and an impeller, and the condenser is arranged at the bottom of the volute, so that grease of the volute can be melted.
In order to facilitate the utilization of the condensed water generated by the evaporator for cleaning the volute, the waterway device further comprises a condensed water box for collecting the condensed water formed by the evaporator, and a liquid outlet of the condensed water box is connected with the water storage box.
In order to avoid the influence on the cleaning of the impeller caused by the fact that the condensed water box and the water storage box are kept always on, the waterway device further comprises a second valve arranged between the condensed water box and the water storage box, so that the condensed water box and the water storage box are communicated or disconnected.
Further, the heat pump apparatus further includes a fan for sucking air from outside the range hood to blow the air toward the evaporator, and the heat pump apparatus may reduce the temperature of the kitchen since the fan of the heat pump apparatus may apply kitchen hot air to the evaporator and the evaporator absorbs heat.
Further, the heat pump device further comprises an expansion valve, a liquid outlet of the condenser is connected with a liquid inlet of the expansion valve, a liquid outlet of the expansion valve is communicated with a liquid inlet of the evaporator, the expansion valve is used for controlling the flow of the refrigerant in the circulation system, the purpose of throttling is achieved, and conditions are created for evaporation.
The invention solves the second technical problem by adopting the technical proposal that: the self-cleaning control method of the range hood comprises the following steps:
1) Starting a self-cleaning function of the range hood;
2) The heat pump device operates;
3) The water pump is operated, at the moment, the heat exchanger is communicated with the water storage box, and the cleaning medium passes through the water pump from the water storage box, exchanges heat in the condenser through the heat exchanger, and then returns to the water storage box through the water return pipe;
4) Detecting the temperature of the cleaning medium flowing back in the water storage box as T, and judging that T is more than or equal to B 1 Whether or not DEG C is established, wherein B 1 If the preset first temperature threshold is the preset first temperature threshold, the step 4.1) is entered, and if the preset first temperature threshold is not the preset first temperature threshold, the step 4.2) is entered:
4.1 Reading continuous operation time t and accumulated operation time t0 of the range hood, and judging that t is more than or equal to t 0 Whether or not to do so, where t 0 If the threshold value is the preset continuous operation time length threshold value which needs to be cleaned, the step 5) is entered, and if the threshold value is not, the step 0 is more than or equal to t0 0 Whether or not it is true, wherein t0 0 A preset accumulated operation time threshold value which needs to be cleaned is adopted, if yes, the step 5) is carried out, and if no, the step 6) is carried out; the continuous operation time length refers to the accumulated value of the time length of the range hood after the last cleaning, and the accumulated operation time length refers to the accumulated value of the operation time length of the range hood after the last cleaning;
4.2 Judging whether the heating efficiency is required or not, if not, returning to the step 3), and if so, entering the step 4.1);
5) Entering a steam cleaning mode, closing the heat pump device, heating a cleaning medium into steam through the heating module, and entering a step 7 after the steam cleaning operation is performed for a preset time;
6) Entering a hot cleaning medium cleaning mode, closing the heat pump device at the moment, and realizing that the cleaning medium meets the temperature B required by heating to liquid cleaning through the heating module 1 C, entering a step 7) after running for a preset time;
7) The water pump continuously runs and is cleaned through the heating module and the nozzle;
8) Judging whether the cleaning medium in the water pump is used up, stopping running if the cleaning medium is used up, and returning to the step 7 if the cleaning medium is not used up.
The self-cleaning control method provided by the invention has the advantages that the self-cleaning control method not only adopts the advantages brought by the heat pump device, but also comprehensively judges according to the pollution duration, matches the cleaning strength, and avoids energy waste and accelerated damage of the service life of the module caused by adopting the same strong cleaning mode on the basis of ensuring the cleaning degree.
Further, in step 2), the heat pump device is operated, and the step 3) is performed after a certain time delay, so that the condenser can be preheated, the condenser can reach the rated temperature first, the early-stage low-efficiency heat exchange is avoided, and the efficiency and the energy conservation are improved.
Further, the fan system includes an impeller, and in step 5), a cleaning object of the steam cleaning is the impeller, and includes the steps of:
5.1 The heat pump device is closed, and the temperature T of the cleaning medium in the current water storage box is detected and recorded;
5.2 The fan system operates at a first rotational speed;
5.3 The heat exchanger is communicated with the heating module, and the heat exchanger is disconnected from the water storage box;
5.4 After a second, the water pump stops running;
5.5 The heating module is operated until the heating is up to a preset second threshold B 2 ℃，B 2 ＞B 1 So as to cleanHeating the washing medium into steam;
5.6 The nozzle sprays steam to clean the fan system;
5.7 The water pump circularly reciprocates;
5.8 A steam mode is run for a preset time and then step 7) is entered.
The steam generation adopts dynamic intermittent parameter adjustment, and steam generation parameters are automatically adjusted according to the water temperature; or heating to constant temperature by a heat pump, and adopting constant parameters; avoiding the problems of no steam generation or insufficient purity and ensuring the cleaning effect.
Further, in order to generate continuous steam with the steam purity maintained at a certain level, in step 5.7), the pump is cycled back and forth for b seconds, stopping for c seconds, so back and forth, b being a parameter related to the flow of the pump, the cleaning medium filling the heating module and not passing through the nozzle for time b, and satisfying the following relationship:
Q is the actual flow of the water pump installed in the whole waterway device, P is the power of the heating module, eta is the heating module, and T is the temperature of the cleaning medium in the water storage box.
Further, the fan system includes an impeller, and in step 6), the cleaning object is the impeller, and includes the steps of:
6.1 The heat pump device is closed, the temperature T of the cleaning medium in the current water storage box is detected and recorded, and the temperature T is judged to be more than or equal to B 1 Whether the temperature is equal to or higher than the temperature of the water, if yes, the step 6.2) is entered, if not, the heating module is started until T is equal to or higher than the temperature of the water 1 C, if the temperature is true, entering the step 6.2);
6.2 The fan system operates at a first rotational speed;
6.3 The heat exchanger is communicated with the heating module, and the heat exchanger is disconnected from the water storage box;
6.4 The nozzle sprays cleaning medium to clean the fan system.
Further, the fan system comprises a volute and an impeller arranged in the volute, wherein the impeller is the cleaning object of the steps 5) and 6); the waterway device also comprises a condensed water box for collecting condensed water formed by the evaporator, and a liquid outlet of the condensed water box is connected with the water storage box;
step 8) is followed by the further steps of:
9) The heating module stops running, and the water pump stops running;
10 The heat exchanger is disconnected from the heating module and communicated with the water storage box;
11 Judging whether the cleaning medium in the condensed water box is full, if so, cleaning the volute, and if not, spin-drying the impeller.
The spiral case is cleaned by utilizing condensed water accumulated by the evaporator, so that the condensed water is prevented from occupying the volume of the oil cup, the cleaning period of the oil cup is shortened, meanwhile, the spiral case can be cleaned regularly by utilizing the condensed water, the same water is ensured to be used for cleaning the impeller and the spiral case, and the user is prevented from adding water again.
Further, the specific step of cleaning the volute is as follows, in step 11), if yes, step 12) is entered, so that the condensed water box and the water storage box are communicated;
13 Judging whether the cleaning medium of the condensed water box is released completely, if yes, going to step 14), if no, going back to step 12);
14 A) start to clean the volute:
14.1 The condensed water box and the water storage box are disconnected, and the heat pump device operates;
14.2 The water pump is started to operate, and then the temperature T of the cleaning medium flowing back from the water storage box is judged to be more than or equal to B 1 Whether the temperature is true or not, if yes, entering a step 14.3), if not, judging whether the heating efficiency meets the requirement, if yes, entering the step 14.3), and if not, repeating the step;
14.3 The heat pump device is closed, the heating module operates, and the fan system operates at a second rotating speed which is higher than the first rotating speed;
14.4 During cleaning, the heat exchanger is communicated with the heating module and disconnected with the water storage box;
14.5 The spray nozzle sprays cleaning medium to clean the volute;
14.6 The water pump continues to run, and the cleaning medium heated by the heat pump device is heated again by the heating module;
14.7 Judging whether the cleaning medium in the water pump is used up, if so, ending the cleaning of the volute, and if not, returning to the step 14.6).
Further, spin-drying the impeller after the spiral case is cleaned or under the condition of skipping the spiral case cleaning, setting each parameter to zero, specifically, the method comprises the following steps that after the cleaning medium in the water pump is judged to be used up in the step 14.7), the step 15) is started, the heating module stops running, the water pump stops running, and the cleaning of the spiral case is finished;
16 The heat exchanger is disconnected from the heating module and is communicated with the water storage box again for resetting;
17 The fan system spin-dries the impeller at a third rotating speed, and the third rotating speed is higher than the second rotating speed;
18 Closing the self-cleaning mode, accumulating the operation time t0, setting the continuous operation time t to zero, and ending.
Compared with the prior art, the invention has the advantages that: the heat pump technology is adopted, the energy efficiency of the heat pump technology is higher, one part of electricity is used, which is equivalent to 3-4 times of electric energy for heating, and the heat in the air is utilized, so that the energy-saving effect is realized; the heat pump technology is energy-saving, the heating module heats water to generate steam after heating, the requirement on the power of the heating module is reduced, the power of the heater is low, the energy-saving effect is realized as a whole, and the load of the power panel is greatly reduced; the cleaning strength is matched according to the comprehensive judgment of the pollution duration, so that energy is not wasted as much as possible on the basis of ensuring the cleaning degree, and the electric energy waste and the accelerated damage of the service life of the module caused by adopting the same strong cleaning mode are avoided; the steam generation adopts dynamic intermittent parameter adjustment, and steam generation parameters are automatically adjusted according to the water temperature; or heating to constant temperature by a heat pump, and adopting constant parameters; avoiding the problems of no steam generation or insufficient purity and ensuring the cleaning effect.
Drawings
Fig. 1 is a schematic view of a range hood according to an embodiment of the present invention;
fig. 2 is a schematic diagram of pipeline connection of a range hood according to an embodiment of the present invention;
fig. 3 is a top view of a range hood according to an embodiment of the present invention;
Fig. 4 is a schematic view of a hidden air intake assembly, a front cover plate of a fan frame, and a part of a cleaning device of the range hood according to an embodiment of the present invention;
fig. 5 is a schematic view (different view from fig. 4) of a hidden air intake assembly, a front cover plate of a fan frame, and a part of a cleaning device of a range hood according to an embodiment of the present invention;
fig. 6 is a schematic view of a fan system and a part of a cleaning device of the range hood according to an embodiment of the present invention;
fig. 7 is a flowchart (partial steps) of a self-cleaning control method of a range hood according to an embodiment of the present invention;
fig. 8 is a flowchart of a self-cleaning control method (partial steps, fig. 7) of a range hood according to an embodiment of the present invention
Fig. 9 is a flowchart of a self-cleaning control method of a range hood according to an embodiment of the present invention (partial steps, fig. 8).
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 6, a range hood includes a hood 1, a fan frame 2 disposed above the hood 1, a fan system 3 disposed in the fan frame 2, and a cleaning device for cleaning the fan system 3. The air inlet mode of the range hood through the fume collecting hood 1 is not limited, and the range hood can adopt the modes of the prior art, such as side suction type, low suction type and the like. The fan system 3 is a centrifugal fan and includes a volute 31 and an impeller 32 disposed within the volute 31.
The cleaning device comprises a water path device and a heat pump device, wherein the water path device can adopt the prior art, and comprises a water storage box 41, a heating module 42, a nozzle 43, a condensed water box 44, a water pump 45, a heat exchanger 46, a first valve 471 and a second valve 472, and the heat pump device comprises an evaporator 51, a condenser 52, a compressor 53, a fan 54, two three-way valves 55 and an expansion valve 56. The specific structure and piping connection of each of the above devices will be described in detail below.
The water storage box 41 may be installed inside the hood 1 for storing a cleaning medium therein, the water storage box 41 serving as a cleaning medium source, the cleaning medium being water, a cleaning agent, etc., which will be described below by taking water as an example. The adapter 411 and the NTC412 are arranged on the water storage box 41, the water storage box 41 and the adapter 411 are connected with the adapter 411 through a water suction nozzle (not shown and integrated with the water storage box 41) sealing piece, the adapter 411 is respectively connected with the water inlet pipe 48 and the water return pipe 49, the water inlet pipe 48 and the water return pipe 49 are all in fluid communication with the interior of the water storage box 41, and the NTC412 can be arranged at the adapter 411 so as to be used for detecting the temperature of water in the water storage box 41. The water pump 45 may be disposed at the top outer side of the fan housing 2 for providing pressure, and the water storage box 41 is communicated with the water pump 45 through the water inlet pipe 48, so that the water pump 45 can pump out water in the water storage box 41. The water inlet pipe 48 passes through the right space (left side is also taken as an example in the embodiment) in the fume collecting hood 1 from the water storage box 41, passes out of the fume collecting hood 1 and is connected with the water pump 45 by being upwards along the right running pipe position (the blower frame 2 is usually covered with a blower housing, so that the water inlet pipe 48 is not exposed when running at the position) on the right side outside the blower frame 2. The liquid outlet of the water pump 45 passes through the first pipe penetrating hole 21 at the top of the fan frame 2 through the first water pipe 451 and enters the interior of the fan frame 2, and is further connected to the heat exchanger 46. The heat exchanger 46 may be a circular equidistant arrangement of copper tubes sandwiched between condensers 52 disposed at the bottom of the volute 31 of the fan system 3. The condenser 52 thus allows the heat exchange area of the heat exchanger 46 to be increased, thereby improving heat exchange efficiency. The liquid outlet of the heat exchanger 46 is connected with the liquid inlet of the first valve 471 through the second connecting water pipe 461, the first valve 471 can be a two-position three-way electromagnetic valve, one liquid outlet is connected to the liquid inlet of the heating module 42 through the third connecting water pipe 4721, the other liquid outlet flows back to the water storage box 41, the other liquid outlet can pass through the second pipe penetrating hole 22 to penetrate to the right side outside the fan frame 2 through the water return pipe 49, and the liquid outlet is connected to the adapter 411 downwards along the right pipe running position where the water inlet pipe 48 is located, so that the water storage box 41 can flow back. The liquid outlet of the heating module 42 is connected to a nozzle 43. The form of the nozzle 43 is not limited and any structure of the prior art that can spray the cleaning medium may be used, and in this embodiment, a moving nozzle 43 is preferably used, such as the cleaning medium supply disclosed in the applicant's chinese patent application No. 202111284408.2.
The evaporator 51 and the condensed water box 44 are provided inside the hood 1, and the condensed water box 44 is used to collect condensed water formed by the evaporator 51, and a liquid level sensor 441 may be provided thereon to detect whether the water level therein is normal or whether an overflow occurs. The liquid outlet of the condensation water boxes 44 is respectively connected with the second valve 472 through a hose, so that the liquid outlet is converged into the water storage box 41 through the second valve 472, in the embodiment, the evaporator 51 and the condensation water boxes 44 are provided with two groups symmetrically arranged on the left and right, so the second valve 472 is a two-in one-out switch valve, and whether the operation is performed is judged according to the liquid level sensor 441 on each condensation water box 44.
In the heat pump device, two evaporators 51 are connected in parallel, the liquid inlet of the evaporators 51 is combined into one path through one (the left side in the present embodiment) three-way valve 55, the liquid outlet is combined into one path through the other (the right side in the present embodiment) three-way valve 55, and the three-way valve 55 is arranged at the outer side of the bottom of the fan frame 2, so that the first pipeline 571 connected between the evaporators 51 and the three-way valve 55 needs to penetrate out of the fume collecting hood 1. The fans 54 are provided on the left and right side walls of the hood 1, and suck air outside the hood 1 (the environment inside the kitchen outside the range hood) toward the evaporator 51, thereby facilitating the evaporator 51 to absorb heat of the environment inside the kitchen.
The compressor 53 is used for compressing a refrigerant to form a high-temperature high-pressure medium, the high-temperature high-pressure medium is arranged outside the top of the fan frame 2, the liquid outlet of the three-way valve 55 on the right side is connected with the liquid inlet of the compressor 53 through a second pipeline 572 upwards through the top of the fan frame 2 along the right side outside the fan frame 2, and the liquid outlet of the compressor 53 is connected with a third pipeline 573. The third pipe 573 is connected to the inlet of the condenser 52 through a third pipe penetrating hole 23 at the top of the fan frame 2, thereby allowing the heat of the compressor 53 to be transferred to the condenser 52. The heat of the condenser 52 is used for heating water, and the waste heat acts on the surface of the volute 31 of the fan system 3 to realize a certain oil melting effect. The expansion valve 56 may be disposed at the top in the fan frame 2, where the liquid outlet of the condenser 52 is connected to the liquid inlet at one end of the expansion valve 56 through the fourth pipe 574, and the liquid outlet at the other end of the expansion valve 56 is connected to the fifth pipe 575, where the fifth pipe 575 passes out of the fan frame 2 from the fourth pipe penetrating hole 24 at the left side of the fan frame 2, and is connected to the interface of the tee 55 at the left side along the left running pipe position at the left side of the fan frame 2, so as to be communicated with the liquid inlet of the evaporator 51, thereby forming a circulation system. The expansion valve 56 is used in the circulation system to control the flow of the refrigerant, thereby realizing the purpose of throttling and creating conditions for evaporation.
Each of the water pipes used in the above-described waterway is a hose, and each of the pipes used in the heat pump apparatus (the pipe connected between the condensate water tank 41 and the water storage tank 41) is a copper pipe. By adopting the heat pump device, the heat pump device only carries out unidirectional heating operation, and air energy is utilized to fully utilize the kitchen hot air after meal. Because the heat pump device uses a part of electricity which is equivalent to 3-4 times of heating effect, the whole power is reduced, the load of a power panel of a control module of the range hood is reduced, and the energy-saving effect is good. Since the fan 54 of the heat pump device acts the kitchen hot air on the evaporator 51, the evaporator 51 absorbs heat, so the heat pump device can lower the kitchen temperature; the condenser 52 absorbs heat to generate condensed water on the surface, which absorbs and condenses moisture in the air, and reduces the kitchen humidity.
Referring to fig. 7 to 9, the flow of the self-cleaning control method of the range hood (the steps cannot be clearly shown in one drawing, and therefore, the flow is divided into three drawings, and the ports with the same numbers in the drawings represent the steps connected) includes the following steps:
1) Starting a self-cleaning function;
2) The heat pump device operates, delays for a certain time, judges whether the time delay is enough, such as 1-2 min, if not, repeats the step, if the time delay is enough, then enters step 3); the main purpose of the step delay is to preheat the condenser 52, so that the condenser 52 reaches the rated temperature first, the early-stage low-efficiency heat exchange is avoided, and the efficiency and the energy conservation are improved;
3) Then the water pump 45 is operated, the water passes through the water pump 45 from the water storage box 41, exchanges heat in the condenser 52 through the heat exchanger 46, then passes through the first valve 471, the first valve 471 is not operated at this time, the water channel on the right side is communicated, and the water is returned to the water storage box 41 through the water return pipe 49;
4) NTC412 detects that the temperature of the water flowing back in the water storage box 41 is T, and judges that T is greater than or equal to B 1 Whether or not DEG C is established, wherein B 1 For a preset first temperature threshold, typically the temperature at which the body senses a hot water condition, preferably B 1 50; if yes, go to step 4.1), if no, go to step 4.2):
4.1 Reading the continuous operation time t and the accumulated operation time t0 of the range hood, wherein the two time information can be realized through a timer of an original control module of the range hood, and the pollution degree of the range hood can be judged; then judging that t is more than or equal to t 0 Whether or not to do so, where t 0 For a preset continuous operation time threshold value to be cleanedPreferably as t 0 480h, if yes, enter step 5), if no, then judge t0 is greater than or equal to t0 0 Whether or not it is true, wherein t0 0 For a preset accumulated operation time threshold value which needs to be cleaned, preferably t0 is as follows 0 30h, if yes, go to step 5), if no, go to step 6); in the step, after heating preparation of the heat pump device is finished, reading a continuous operation time length t and an accumulated operation time length t0, so as to judge the pollution degree, wherein the continuous operation time length refers to a time length accumulated value of the range hood after the last cleaning, and the accumulated operation time length refers to a time length accumulated value of the range hood after the last cleaning; firstly judging t, when the value is larger than a certain value, such as 20 days, directly matching the strong washing mode, otherwise, continuously judging whether t0 is larger than a certain threshold value, such as 30 hours, wherein the threshold value can be set according to the common use habit of a user; the cleaning intensity is automatically matched, so that the cleaning is not in place or energy waste caused by adopting one mode is avoided;
4.2 Judgment of (1)
If yes, returning to the step 3), if no, entering the step 4.1); where d is a heating efficiency threshold, such as 20%;
Refers to the ratio of the final heating rate to the initial heating rate, and judges
The purpose of the system is to monitor the heating efficiency change in real time, when the environment temperature is lower, the heating efficiency is gradually reduced due to the fact that the heat overflow speed is higher, when the environment temperature is lower than a certain threshold value such as 20%, water is difficult to heat, and energy is wasted when the environment temperature is continued to heat, so that the purpose of energy saving is achieved through the condition limitation, the system adapts to the environment temperature, and the temperature is detected in real time but does not need to be detected frequently and can be detected every 30-60 seconds; wherein the numerator represents the end-stage adjacent two temperature differences, the denominator represents the initial-stage adjacent two temperature differences,T i refers to the current i-th detected temperature, T i-1 Refers to the last (i-1 st) detected temperature, T 0 For the initial temperature detected after the steady operation of the heat pump, close to the water temperature added by the water storage box 41, T 1 For the temperature detected for the first time thereafter;
5) Entering a steam cleaning mode, namely a strong cleaning mode, and adopting a steam and hot water mode:
5.1 The NTC412 detects and records the current temperature T when the heat pump device cannot supply heat to generate steam, and the low-power heating module 42 is needed to be used, so that the heat pump device is turned off because the water temperature is not lower than B 1 The heat pump device is turned on again and cannot play a role in heating, and is turned off to save energy and reduce the load of a power panel, so that the load is prevented from being increased when the heat pump device and the heating module 42 are operated at the same time, and the temperature T is the water temperature of the water storage box 41;
5.2 The fan system 3 is operated at a first rotational speed (low speed) in order to further control the stability of the steam and to adapt to different temperatures, typically when the rotational speed of the motor of the fan system 3 driving the impeller 32 is between 30 and 60r/min;
5.3 The first valve 471 is actuated so that the first valve 471 is in communication with the module of the heating module 42 and the first valve 471 is disconnected from the water storage tank 41, whereby the washing line is on and water does not pass through the return pipe 49 but through the heating module 42 to the nozzle 43 for washing, at which time the water pump 45 is operated;
5.4 After a second, the water pump 45 stops running, a is the preset running time of the water pump 45 during cleaning, so that the heating module 42 is filled with water, the later dry burning is avoided, and the running of the water pump 45 is stopped after the water pump is filled;
5.5 A) the heating module 42 operates until heating to a preset second threshold B 2 C, at this time, can form water into water vapor, B 2 ＞B 1 The method comprises the steps of carrying out a first treatment on the surface of the Because the water entering the heating module 42 is already heated, the temperature rise required for generating steam by continuous heating is small, the power is at least half lower than that of the heating module alone, only 1200W is used, and only 700W is needed after the heat pump is added, thereby reducing The power panel load; the detected temperature is the temperature W detected by a temperature sensor built in the heating module 42, and represents the value when the heating module 42 generates the target steam and is stable, the heating module 42 is different in temperature, B 2 Generally above 100 and below 135;
5.6 The nozzle 43 sprays steam to clean the fan system 3, in this embodiment, the stepper motor driving the nozzle 43 starts reciprocating circulation operation, and comprehensive cleaning is realized in cooperation with rotation of the impeller 32;
5.7 The water pump 45 is operated in a cyclic reciprocating manner, such as b seconds, c seconds, and so forth, and the water pump 45 is operated intermittently since the heating module 42 does not directly heat the passing water to steam during washing; the parameter b is related to the flow of the water pump 45, the heating module 42 is refilled during the time b, the water does not overflow through the nozzle 43, the running time c determines the purity of the steam and the steam impact strength after the time b is determined, and in order to generate continuous steam, and the purity of the steam is kept at a certain level, preferably, the relationship between the stopping time c and the running time b satisfies the following relationship:
above, Q is the actual flow of the water pump 45 installed into the whole waterway device, and the unit is g/s; p is the power of the heating module, and the unit is W; η is the efficiency of the heating module 42, T is the water temperature of the water storage box 41, b is known, c can be determined after detecting the temperature T before steam is generated, and the program gives the value of c for this time; so that the adaptation of different water temperatures can be realized, the steam stability is ensured, and the impact strength is ensured; preferably, if the water temperature after the system is heated is ensured to be constant, a fixed c value can be adopted, and the water temperature can be calculated by a formula;
5.8 A steam mode is operated for a preset time, and then step 7) is performed; if the steam mode is operated for 2 periods, that is, the nozzle 43 reciprocates for two periods, ending the steam mode and switching to the subsequent hot water cleaning;
6) Entering a hot water cleaning mode, namely a weak cleaning mode:
6.1 The heat pump device is turned off, the NTC412 detects and records the current temperature T, and judges that T is greater than or equal to B 1 Whether the temperature is true or not, if yes, go to step 6.2), if not, the heating module 42 is started up until T is not less than B 1 C, if the temperature is true, entering the step 6.2); the heating module 42 is mainly used for generating steam, and the heating requirement is not great during hot water cleaning;
6.2 A) the fan system 3 is operated at a first rotational speed;
6.3 A first valve 471 is actuated such that communication between the first valve 471 and the heating module 42 module is established, and the first valve 471 is disconnected from the water storage cartridge 41, whereby the purge line is connected;
6.4 After a seconds, the nozzle 43 sprays hot water to clean the fan system 3, in this embodiment, the reciprocating cycle is started for the stepper motor driving the nozzle 43, and step 7 is entered);
7) The water pump 45 is continuously operated; the hot water in the water storage box 41 is continuously heated by the heating module 42 to generate hotter water, and the flushing impeller 32 is cleaned;
8) Judging whether the current I of the water pump 45 is less than or equal to C or not, wherein C is a preset running current threshold value of the water pump 45; if yes, the water is used up, the step 9) is carried out, and if not, the step 7) is returned to;
9) The heating module 42 stops running, the water pump 45 stops running, and the stepping motor driving the nozzle 43 returns to zero;
10 The first valve 471 is powered off and reset, the second valve 42 is disconnected from the heating module 42, and a normal circulation waterway is connected, namely, the circulation waterway is communicated with the water storage box 41 again;
11 Level sensors 441 of both condensed water boxes 44 detect current levels Q1, Q2, respectively; judging whether one of Q1 and Q2 is 1, if so, entering step 12), and if not, entering step 17); after the cleaning process is finished, whether the condensed water is full or not needs to be judged, and the volute 31 is cleaned regularly; one of Q1 and Q2 is 1, which represents that the condensate box 44 is full; if Q1 and Q2 are both 0, the water box is not full and the water quantity is insufficient, the volute 31 cleaning procedure is not needed, and the impeller 32 spin-drying stage is directly carried out after the volute is directly jumped out;
12 A second valve 472 is operated to communicate between the condensed water box 44 and the water storage box 41, and water of the two condensed water boxes 44 is gathered to the water storage box 41;
13 Judging whether one of Q1 and Q2 is 0, if yes, entering step 14), if no, returning to step 12);
14 When one of Q1 and Q2 is detected as 0, indicating that the water discharge of the condensed water box 44 is completed, the cleaning of the blower system 3 is started, mainly for the cleaning of the scroll case 31:
14.1 A second valve 472 is closed by power failure, so that the condensed water box 44 and the water storage box 41 are disconnected, and the heat pump device operates;
14.2 A) starting the water pump 45 to enable the water pump 45 to operate, and then judging that the temperature T of the backwater is more than or equal to B 1 Whether the temperature is satisfied (by continuously circularly exchanging heat, the water temperature is increased until the water becomes hot water), if yes, the step 14.3 is carried out, if not, the judgment is carried out
If yes, entering a step 14.3), and if no, repeating the step;
14.3 The heat pump device is turned off, the heating module 42 is operated, and the fan system 3 is operated at a second rotational speed (high speed); the condensed water aims at cleaning the volute 31, the volute 31 is cleaned by driving hot water jet flow to act on the annular wall of the volute 31 through the high-speed rotation of the impeller 32 of the fan system 3, and the high-speed rotation is about 300-500 r/min, which is higher than the speed of cleaning the impeller 32 but lower than the speed of throwing water of the impeller 32;
14.4 The first valve 471 is actuated so that communication between the first valve 471 and the heating module 42 module is established, and disconnection between the first valve 471 and the water storage cartridge 41 is established, whereby the purge line is connected;
14.5 The nozzle 43 sprays hot water to clean the fan system 3, and in this embodiment, the reciprocating circulation operation is started for the stepper motor driving the nozzle 43, so that the volute 31 and the impeller 32 on the whole axial direction surface can be cleaned;
14.6 The water pump 45 continues to run, the water heated by the heat pump device is heated again to act on the impeller 32 through the heating module 42, and because jet flow directly acts on the concave surface (pressure surface) of the blade of the impeller 32, the water can be thrown to the annular wall surface of the volute 31 due to centrifugal force when the impeller 32 rotates at a high speed to clean the volute 31, because the accumulated oil is the lower part of the volute 31, the heat pump device heats hot water, meanwhile, the overflowed heat can heat the lower semicircle of the volute 31 to soften to a certain extent, and then the cleaning of the volute 31 is realized under the impact and flow flushing actions of the hot water; because the heat pump device has the comprehensive effects of softening, hot water impact, washing and impeller high-speed water throwing, the heat dissipation of the condenser 52 of the daily cleaning heat pump device also softens oil stains of the volute 31, and a certain cleaning effect still exists under the effect of hot water, but the impeller 32 has low rotating speed and poor cleaning effect, and the main cleaning object is the impeller 32 at the moment; the effect of a small amount of accumulated oil of the spiral case 31 on the performance is not great, and the spiral case 31 can be considered in daily impeller cleaning, so that the spiral case 31 is not required to be cleaned frequently, condensed water is required to be cleaned for a plurality of times to be fully accumulated, the spiral case 31 is just cleaned regularly, the condensed water is processed, and does not need to flow back to the oil cup 6 (a position similar to the water storage box 41), so that a user is prevented from cleaning the oil cup 6 frequently, and meanwhile, the spiral case 31 is cleaned regularly by the condensed water, and the kitchen environment is prevented from being influenced by peculiar smell;
14.7 During operation, it is also necessary to identify whether the water pump 45 is empty, that is, determine whether the current i.ltoreq.c of the water pump 45 is true, if yes, go to step 15), end the cleaning of the volute 31, if no, go back to step 14.6);
15 The heating module 42 stops running, the water pump 45 stops running, and the stepping motor returns to zero;
16 The first valve 471 is powered off and reset, the second valve 42 is disconnected from the heating module 42, and a normal circulation waterway is connected, namely, the circulation waterway is communicated with the water storage box 41 again;
17 The fan system 3 runs for preset time at a third rotating speed (strong gear) to spin-dry for 3min, and then the step 18 is carried out; the third rotational speed is greater than the second rotational speed;
18 Closing the self-cleaning mode, accumulating the operation time t0, setting the continuous operation time t to zero, and ending.
In the above-mentioned control method of the present invention, the purpose of steam or hot water with a specific temperature is achieved, under the same configuration, if the heat pump device and the heating module 42 are turned on at the same time to directly spray water, the water temperature is not reached at 50 ℃, because the whole power is insufficient, when the heat pump device is separately heated, the water temperature is firstly preheated by the circulation system to be raised by more than 50 ℃, the heat pump device is energy-saving, and is more energy-saving than the heating module 42 under the same condition, and then, whether the heating is performed or not is judged according to the selection of cleaning strength, so that the power selection of the subsequent heating module 42 is very low, the steam generation can be ensured, and meanwhile, compared with the direct steam generation, the original water temperature is raised to 50 from normal temperature, the heating module 42 is not only selected to have small power, but also energy is saved because the partial temperature rise equivalent to the heating module 42 is transferred to the energy-saving heat pump.
Claims (17)
1. A range hood comprising a fan system (3) and a cleaning device for cleaning the fan system (3), the cleaning device comprising a waterway device comprising a heating module (42) for heating a cleaning medium and a nozzle (43) for spraying the cleaning medium flowing out of the heating module (42) to the fan system (3) for cleaning; the method is characterized in that:
the waterway arrangement further includes a heat exchanger (46), the heat exchanger (46) being disposed upstream of the heating module (42) in the cleaning medium flow path;
the cleaning device further comprises a heat pump device comprising an evaporator (51) forming a circuit, a condenser (52) and a compressor (53), the condenser (52) being adapted to provide a heat source to the heat exchanger (46).
2. The range hood of claim 1, wherein: the water path device further comprises a water storage box (41) and a water pump (45), wherein the water storage box (41) and the water pump (45) are used for storing cleaning media, the water storage box (41) is connected with the water pump (45) through a water inlet pipe (48), a liquid outlet of the water pump (45) is connected to a heat exchanger (46) through a first water pipe (451), a water return pipe (49) is further connected between the heat exchanger (46) and the water storage box (41), and the heat exchanger (46) is selectively communicated with the heating module (42) and the water storage box (41) respectively.
3. The range hood of claim 2, wherein: the waterway device further comprises a first valve (471), a liquid outlet of the heat exchanger (46) is connected with a liquid inlet of the first valve (471) through a second connecting water pipe (461), one liquid outlet of the first valve (471) is connected to a liquid inlet of the heating module (42) through a third connecting water pipe (4721), and the other liquid outlet of the first valve is connected to the water storage box (41) through a water return pipe (49), so that the heat exchanger (46) is selectively communicated with the heating module (42) and the water storage box (41) respectively.
4. The range hood of claim 1, wherein: the heat exchangers (46) are copper tubes which are circularly and equidistantly arranged and are sandwiched between condensers (52).
5. The range hood of claim 4, wherein: the fan system (3) comprises a volute (31) and an impeller (32), and the condenser (52) is arranged at the bottom of the volute (31).
6. The range hood of claim 1, wherein: the waterway device further comprises a condensed water box (44) for collecting condensed water formed by the evaporator (51), and a liquid outlet of the condensed water box (44) is connected with the water storage box (41).
7. The range hood of claim 6, wherein: the waterway device further includes a second valve (472) provided between the condensed water box (44) and the water storage box (41) so that the condensed water box (44) and the water storage box (41) are connected or disconnected.
8. The range hood of claim 1, wherein: the heat pump device further includes a fan (54) for sucking air outside the range hood and blowing the sucked air toward the evaporator (51).
9. The range hood of claim 1, wherein: the heat pump device further comprises an expansion valve (56), wherein a liquid outlet of the condenser (52) is connected with a liquid inlet of the expansion valve (56), and a liquid outlet of the expansion valve (56) is communicated with a liquid inlet of the evaporator (51).
10. A self-cleaning control method of a range hood according to claim 2 or 3, comprising the steps of:
1) Starting a self-cleaning function of the range hood;
2) The heat pump device operates;
3) The water pump (45) operates, at the moment, the heat exchanger (46) is communicated with the water storage box (41), and the cleaning medium is sent back to the water storage box (41) through the water pump (45), heat in the condenser (52) is exchanged through the heat exchanger (46), and then the cleaning medium is sent back to the water storage box (41) through the water return pipe (49);
4) Detecting the temperature of the cleaning medium flowing back in the water storage box (41) as T, and judging that T is more than or equal to B 1 Whether or not DEG C is established, wherein B 1 If the preset first temperature threshold is the preset first temperature threshold, the step 4.1) is entered, and if the preset first temperature threshold is not the preset first temperature threshold, the step 4.2) is entered:
4.1 Reading continuous operation time t and accumulated operation time t0 of the range hood, and judging that t is more than or equal to t 0 Whether or not to do so, where t 0 If the threshold value is the preset continuous operation time length threshold value which needs to be cleaned, the step 5) is entered, and if the threshold value is not, the step 0 is more than or equal to t0 0 Whether or not it is true, wherein t0 0 A preset accumulated operation time threshold value which needs to be cleaned is adopted, if yes, the step 5) is carried out, and if no, the step 6) is carried out; the continuous operation time length refers to the accumulated value of the time length of the range hood after the last cleaning, and the accumulated operation time length refers to the accumulated value of the operation time length of the range hood after the last cleaning;
4.2 Judging whether the heating efficiency is required or not, if not, returning to the step 3), and if so, entering the step 4.1);
5) Entering a steam cleaning mode, closing the heat pump device, heating a cleaning medium into steam through the heating module (42), and entering a step 7 after the steam cleaning operation is performed for a preset time;
6) Entering a heat cleaning medium cleaning mode, wherein the heat pump device is turned off and passes through the heating module(42) Realizing that the cleaning medium meets the temperature B required by heating to liquid cleaning 1 C, entering a step 7) after running for a preset time;
7) The water pump (45) runs continuously and is cleaned by the heating module (42) and the nozzle (43);
8) Judging whether the cleaning medium in the water pump (45) is used up, stopping running if the cleaning medium is used up, and returning to the step 7 if the cleaning medium is not used up.
11. The self-cleaning control method of a range hood according to claim 10, characterized by: in step 2), the heat pump device is operated, and step 3) is performed after a certain time delay.
12. The self-cleaning control method of a range hood according to claim 10, characterized by: the fan system (3) includes an impeller (32), and in step 5), a cleaning object of steam cleaning is the impeller (32), and includes the steps of:
5.1 The heat pump device is closed, and the temperature T of the cleaning medium in the current water storage box (41) is detected and recorded;
5.2 -said fan system (3) is operated at a first rotational speed;
5.3 The heat exchanger (46) is communicated with the heating module (42), and the heat exchanger (46) is disconnected with the water storage box (41);
5.4 After a second, the water pump (45) stops running;
5.5 The heating module (42) is operated until the heating is up to a preset second threshold value B 2 ℃，B 2 ＞B 1 Heating the cleaning medium to steam;
5.6 The nozzle (43) sprays steam to clean the fan system (3);
5.7 The water pump (45) is operated in a circulating and reciprocating mode;
5.8 A steam mode is run for a preset time and then step 7) is entered.
13. The self-cleaning control method of a range hood according to claim 12, wherein: in step 5.7), the pump (45) is cycled back and forth for b seconds, stopping for c seconds, so back and forth, b being a parameter related to the flow of the pump (45), the cleaning medium filling the heating module (42) and not passing through the nozzle (43) for a time b, and satisfying the following relationship:
q is the actual flow of the water pump (45) installed in the whole waterway device, P is the power of the heating module, theta is the heating module (42), and T is the temperature of the cleaning medium in the water storage box (41).
14. The self-cleaning control method of a range hood according to claim 10, characterized by: the fan system (3) includes an impeller (32), and in step 6), the cleaning object is the impeller (32), and includes the steps of:
6.1 The heat pump device is closed, the temperature T of the cleaning medium in the current water storage box (41) is detected and recorded, and the temperature T is more than or equal to B is judged 1 Whether the temperature is true or not, if yes, entering the step 6.2), if not, starting the heating module (42) until T is more than or equal to B 1 C, if the temperature is true, entering the step 6.2);
6.2 -said fan system (3) is operated at a first rotational speed;
6.3 The heat exchanger (46) is communicated with the heating module (42), and the heat exchanger (46) is disconnected with the water storage box (41);
6.4 The nozzles (43) spray cleaning media to clean the fan system (3).
15. The self-cleaning control method of a range hood according to claim 10, characterized by: the fan system (3) comprises a volute (31) and an impeller (32) arranged in the volute (31), and the cleaning objects in the steps 5) and 6) are the impeller (32); the waterway device further comprises a condensed water box (44) for collecting condensed water formed by the evaporator (51), wherein a liquid outlet of the condensed water box (44) is connected with the water storage box (41);
step 8) is followed by the further steps of:
9) The heating module (42) stops running, and the water pump (45) stops running;
10 The heat exchanger (46) is disconnected from the heating module (42) and communicated with the water storage box (41);
11 If the condensed water box (44) is full, the volute (31) is cleaned, and if the condensed water box is not full, the impeller (32) is spin-dried.
16. The self-cleaning control method of a range hood according to claim 15, wherein: in step 11), if so, step 12) is entered to allow communication between the condensate water cartridge (44) and the water storage cartridge (41);
13 Judging whether the cleaning medium of the condensed water box (44) is released completely, if yes, going to step 14), if no, going back to step 12);
14 A) starting cleaning of the volute (31):
14.1 A heat pump device is operated by disconnecting the condensed water box (44) from the water storage box (41);
14.2 The water pump (45) is started to operate, and then the temperature T of the cleaning medium reflowed by the water storage box (41) is judged to be more than or equal to B 1 Whether the temperature is true or not, if yes, entering a step 14.3), if not, judging whether the heating efficiency meets the requirement, if yes, entering the step 14.3), and if not, repeating the step;
14.3 The heat pump device is turned off, the heating module (42) operates, and the fan system (3) operates at a second rotational speed, which is greater than the first rotational speed;
14.4 During cleaning, the heat exchanger (46) is communicated with the heating module (42) and disconnected with the water storage box (41);
14.5 The nozzle (43) sprays cleaning medium to clean the volute (31);
14.6 The water pump (45) continues to run, and the cleaning medium heated by the heat pump device is heated again through the heating module (42);
14.7 If the cleaning medium in the water pump (45) is used up, the cleaning of the volute (31) is finished, and if the cleaning medium is not used up, the step returns to the step 14.6).
17. The self-cleaning control method of a range hood according to claim 16, wherein: after the cleaning medium in the water pump (45) is judged to be used up in the step 14.7), the step 15) is entered, the heating module (42) stops running, the water pump (45) stops running, and the cleaning of the volute (31) is finished;
16 The heat exchanger (46) is disconnected from the heating module (42) and is communicated with the water storage box (41) again for resetting;
17 The fan system (3) spin-dries the impeller (32) at a third rotating speed, and the third rotating speed is higher than the second rotating speed;
18 Closing the self-cleaning mode, accumulating the operation time t0, setting the continuous operation time t to zero, and ending.
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| CN202310128893.7A CN116336527B (en) | 2023-02-03 | 2023-02-03 | A range hood and its self-cleaning control method |
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| CN202310128893.7A CN116336527B (en) | 2023-02-03 | 2023-02-03 | A range hood and its self-cleaning control method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102331084A (en) * | 2011-08-05 | 2012-01-25 | 侯全舵 | Air source heat pump water heater combined with fume exhauster |
| WO2015027586A1 (en) * | 2013-08-26 | 2015-03-05 | 广东美的厨房电器制造有限公司 | Range hood, cleaning device for range hood, and control method therefor |
| CN106051857A (en) * | 2016-06-15 | 2016-10-26 | 广东美的厨房电器制造有限公司 | Range hood and cleaning method thereof |
| CN212057435U (en) * | 2020-03-25 | 2020-12-01 | 冯婧慧 | Household integrated stove adopting heat pump principle |
| CN217004593U (en) * | 2022-01-07 | 2022-07-19 | 宁波方太厨具有限公司 | Cooking utensil |
| CN115434931A (en) * | 2022-08-01 | 2022-12-06 | 宁波方太厨具有限公司 | A control method of a range hood and a range hood applied to the control method |
-
2023
- 2023-02-03 CN CN202310128893.7A patent/CN116336527B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102331084A (en) * | 2011-08-05 | 2012-01-25 | 侯全舵 | Air source heat pump water heater combined with fume exhauster |
| WO2015027586A1 (en) * | 2013-08-26 | 2015-03-05 | 广东美的厨房电器制造有限公司 | Range hood, cleaning device for range hood, and control method therefor |
| CN106051857A (en) * | 2016-06-15 | 2016-10-26 | 广东美的厨房电器制造有限公司 | Range hood and cleaning method thereof |
| CN212057435U (en) * | 2020-03-25 | 2020-12-01 | 冯婧慧 | Household integrated stove adopting heat pump principle |
| CN217004593U (en) * | 2022-01-07 | 2022-07-19 | 宁波方太厨具有限公司 | Cooking utensil |
| CN115434931A (en) * | 2022-08-01 | 2022-12-06 | 宁波方太厨具有限公司 | A control method of a range hood and a range hood applied to the control method |
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