Cleaning device and oil smoke pumping and discharging equipment

Abstract

The utility model belongs to the technical field of electric appliances, and discloses a cleaning device and oil smoke pumping and discharging equipment. The cleaning device comprises a heating device, a nozzle, a driving pump, a water supply pipe, a liquid outlet pipe and a liquid inlet pipe; a steam outlet of the heating device is connected with the nozzle through a cleaning pipe, and the cleaning pipe is sequentially provided with a steam control valve, a driving pump and a cleaning control valve in the fluid flowing direction. The liquid outlet end of the water supply pipe is connected to the cleaning pipe and located between the driving pump and the steam control valve, and a water supply control valve is arranged on the water supply pipe; the liquid inlet end of the liquid outlet pipe is connected to the liquid inlet and outlet, the liquid outlet end is connected to the cleaning pipe and located between the driving pump and the steam control valve, and the liquid outlet pipe is provided with a liquid outlet control valve; the liquid inlet end of the liquid inlet pipe is connected to the cleaning pipe and located between the cleaning control valve and the driving pump, the liquid outlet end of the liquid inlet pipe is connected to the liquid inlet and outlet, and a liquid inlet control valve is arranged on the liquid inlet pipe. According to the cleaning device, the structural compactness of the cleaning device can be improved, and the occupied space of the cleaning device is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical appliances, in particular to a cleaning device and an oil fume exhaust device. Background Art

[0002] During the use of an oil fume extractor, a large amount of oil stains will accumulate in the body of the fume extractor and on the impeller. These oil stains are not conducive to the cleaning and sanitation of the fume extractor. Moreover, the oil stains on the impeller will affect the rotation speed of the impeller, the smoking effect and the service life of the motor. In addition, too much oil stain accumulates on the impeller, resulting in an overweight load on the motor of the fume extractor, which may cause the motor to heat up, the wire to short-circuit, the motor to burn out, and even cause a fire.

[0003] To clean the oil stains on the impeller, in the prior art, a cleaning device capable of realizing steam cleaning and hot water flushing is added to the oil fume extractor to clean the impeller. However, the cleaning device provided by the prior art has the problems of complex and numerous pipeline structures and a large occupied space of the cleaning device, which affects the layout and use of the cleaning device inside the oil fume extractor.

[0004] Therefore, there is an urgent need for a cleaning device and an oil fume exhaust device to solve the above technical problems. Summary of the Utility Model

[0005] One of the technical problems to be solved by the utility model is to provide a cleaning device, which can effectively solve the problems of complex pipeline structure and large space of the existing cleaning device, improve the structural compactness of the cleaning device, reduce the cost of the cleaning device, and improve the cleaning efficiency.

[0006] Another technical problem to be solved by the utility model is to provide an oil fume exhaust device, which can effectively solve the problems that the large occupied space of the existing cleaning device is not conducive to the layout inside the oil fume exhaust device and causes an increase in the size of the oil fume exhaust device, improve the layout convenience of the cleaning device in the oil fume exhaust device, and reduce the use cost of the oil fume exhaust device.

[0007] The above first technical problem is solved by the following technical solutions:

[0008] A cleaning device includes a heating device, a nozzle and a pipeline assembly. The pipeline assembly includes a driving pump, a water supply pipe, a liquid outlet pipe and a liquid inlet pipe. A steam outlet is arranged at the upper part of the heating device, and a liquid inlet and outlet is arranged at the lower part of the heating device;

[0009] The steam outlet and the nozzle are connected by a cleaning pipe. Along the fluid flow direction, a steam control valve, a driving pump and a cleaning control valve are sequentially arranged on the cleaning pipe;

[0010] The liquid outlet end of the water supply pipe is connected to the cleaning pipe and is located between the driving pump and the steam control valve, and a water supply control valve is arranged on the water supply pipe;

[0011] The liquid inlet end of the liquid outlet pipe is connected to the liquid inlet and outlet, the liquid outlet end of the liquid outlet pipe is connected to the cleaning pipe and is located between the driving pump and the steam control valve, and a liquid outlet control valve is arranged on the liquid outlet pipe;

[0012] The liquid inlet end of the liquid inlet pipe is connected to the cleaning pipe and is located between the cleaning control valve and the driving pump, the liquid outlet end of the liquid inlet pipe is connected to the liquid inlet and outlet, and a liquid inlet control valve is arranged on the liquid inlet pipe.

[0013] Compared with the background technology, the cleaning device of the present utility model has the following beneficial effects: Since the heating device can supply steam to the cleaning pipe by heating to perform steam cleaning on the fan, the heating device can form hot water by heating, and the hot water is supplied to the cleaning pipe through the liquid outlet pipe, so as to realize hot water spraying on the impeller. Therefore, not only can hot water flushing of the fan be realized, but also the steam cleaning requirement can be met, improving the cleaning effect of the cleaning device on the fan; At the same time, since the liquid inlet end of the liquid inlet pipe is connected to the cleaning pipe and is located between the cleaning control valve and the driving pump, and the water outlet end of the water supply end is connected to the cleaning pipe and is located between the driving pump and the steam control valve, a driving pump is used to realize the liquid inlet driving of the heating device and the flow driving of the steam to the cleaning pipe, reducing the driving cost, ensuring driving reliability, and effectively shortening the total pipeline length of the cleaning device, better realizing the integrated layout of each pipeline, improving the structural compactness of the cleaning device, and further reducing the floor space occupied by the cleaning device; Moreover, the liquid outlet end of the liquid outlet pipe is connected to the cleaning pipe and is located between the driving pump and the steam control valve, so that steam cleaning and hot water cleaning can share most of the pipelines of the cleaning pipe, further improving the pipeline integration in the cleaning device, reducing the floor space occupied by the cleaning device, and reducing the structural cost of the cleaning device.

[0014] In one embodiment, the cleaning device further includes a cleaning agent pipe, the liquid inlet end of the cleaning agent pipe is used to be connected to a cleaning agent box, the liquid outlet end of the cleaning agent pipe is connected to the cleaning pipe and is located between the driving pump and the steam control valve, and a cleaning agent control valve is arranged on the cleaning agent pipe.

[0015] In one embodiment, the cleaning device further includes a first air pressure balance pipe, the first end of the first air pressure balance pipe is communicated with the outside, the second end of the first air pressure balance pipe is communicated with the heating cavity of the heating device, and an air outlet one-way valve is arranged on the first air pressure balance pipe, and the air outlet one-way valve only allows the gas in the heating cavity to flow out through the first air pressure balance pipe;

[0016] And / or, the cleaning device also includes a second air pressure balance pipe, one end of which is connected to the heating chamber of the heating device, the second end of which is located outside the heating chamber, and an air intake check valve is provided on the second air pressure balance pipe, which only allows external gas to flow into the heating chamber.

[0017] In one embodiment, the air inlet end of the first air pressure balance pipe is connected to the cleaning pipe and is located upstream of the steam control valve;

[0018] And / or, the air outlet end of the second air pressure balance pipe is connected to the water supply pipe and is located upstream of the water supply control valve.

[0019] In one embodiment, the cleaning device further comprises a liquid discharge pipe, the liquid inlet end of the liquid discharge pipe is connected to the cleaning pipe and is located between the driving pump and the cleaning control valve, the liquid outlet end of the liquid discharge pipe is connected to the water supply pipe and is located upstream of the water supply control valve, and the liquid discharge pipe is provided with a liquid discharge control valve;

[0020] And / or, a cleaning one-way valve is provided on the cleaning pipe, and the cleaning one-way valve is located between the nozzle and the cleaning control valve, and the cleaning one-way valve only allows fluid to flow from the cleaning control valve to the nozzle.

[0021] In one embodiment, the cleaning device also includes an installation box, which includes a box body with an open upper end and a cover body covered on the open end of the box body, the box body and the cover body together form an installation cavity, the pipeline assembly and the heating device are both located in the installation cavity, and the water inlet end of the water supply pipe and the liquid outlet end of the cleaning pipe both extend out of the installation box.

[0022] In one embodiment, the installation cavity is horizontally divided into a heating installation cavity and a pipeline installation cavity by a partition component, the heating device is installed in the heating installation cavity, the pipeline assembly is installed in the pipeline installation cavity, the cavity wall of the pipeline installation cavity is provided with a plurality of pipe through-holes, the water supply pipe and the cleaning pipe extend out of the installation box through the pipe through-holes;

[0023] And / or, the box body includes a first mounting groove with an open upper end, the cover body includes a second mounting groove with an open downward end, the first mounting groove and the second mounting groove cooperate to form the mounting cavity, and the upper ends of the pipeline assembly and the heating device are higher than the upper end of the box body.

[0024] In one embodiment, the heating device comprises:

[0025] The heating box has a heating cavity, and a heating port is provided at the bottom of the heating cavity;

[0026] A heating unit, which is hermetically installed at the heating port;

[0027] A thermostat, which is arranged on a side of the heating unit away from the heating cavity and is electrically connected to the heating unit, and the thermostat is used to control the heating power of the heating unit.

[0028] In one embodiment, the heating box includes a box body and a boss portion protruding downward from the bottom of the box body. The cross-sectional area of the boss portion is smaller than that of the box body. The heating port is opened at the bottom of the boss portion, the liquid inlet and outlet are opened on the side wall of the boss portion, and the steam outlet is opened at the top of the box body;

[0029] And / or, the upper end of the heating box is provided with an open mouth, and the cover body seals the open mouth of the heating box to close the upper end of the heating cavity.

[0030] In one embodiment, a positioning boss ring portion protrudes from the bottom of the installation cavity. The boss portion, the heating unit and the thermostat are all located inside the positioning boss ring portion. The end face of the positioning boss ring portion abuts against the lower end face of the box body. The steam outlet is opened on the upper side wall of the box body, and the liquid inlet and outlet are arranged on the side wall of the boss portion;

[0031] And / or, a positioning ring portion protrudes downward from the lower side surface of the cover body, and the positioning ring portion is in plug-in fit with the upper end of the heating box.

[0032] The above second technical problem is solved by the following technical solutions:

[0033] An oil fume exhaust device includes a wind box and a fan arranged in the wind box. It is characterized in that it further includes the above cleaning device. The cleaning device is installed in the wind box, and the nozzle faces the impeller of the fan.

[0034] The smoking exhaust device of the present utility model has the following beneficial effects compared with the background technology: By adopting the above cleaning device, the cleaning of the fan can be realized, and the cleaning effect of the fan can be improved, and the use safety and reliability of the oil fume exhaust device can be improved; at the same time, due to the enhanced structural compactness of the cleaning device, the occupied space is reduced, which is beneficial to realizing the installation layout of the cleaning device inside the oil fume exhaust device and is beneficial to realizing the miniaturization setting of the oil fume exhaust device.

[0035] In one embodiment, an electric control box is arranged on the top of the wind box. The cleaning device is installed on the upper side of the electric control box, and the electrical components in the pipeline assembly are electrically connected to the controller in the electric control box. Description of the Drawings

[0036] Figure 1 It is a schematic structural diagram of the cleaning device provided in the first embodiment of the present invention;

[0037] Figure 2 It is a schematic structural diagram of the cleaning device provided in the second embodiment of the present invention;

[0038] Figure 3 It is a schematic exploded structural diagram of the cleaning device provided in the second embodiment of the present invention;

[0039] Figure 4 It is a cross-sectional view of the cleaning device provided in the second embodiment of the present invention;

[0040] Figure 5 It is Figure 4 a partial enlarged view at position I in;

[0041] Figure 6 It is a schematic structural diagram of the box body provided in the second embodiment of the present invention;

[0042] Figure 7 It is a cross-sectional view of the heating box provided in the second embodiment of the present invention;

[0043] Figure 8 It is a schematic partial exploded structural diagram of the heating device provided in the second embodiment of the present invention;

[0044] Figure 9 It is a schematic partial structural diagram of the oil fume exhaust device provided in the third embodiment of the present invention;

[0045] Figure 10 It is a schematic exploded structural diagram of a part of the oil fume exhaust device provided in the third embodiment of the invention;

[0046] Figure 11 It is a schematic structural diagram of the fan and the nozzle provided in the third embodiment of the present invention;

[0047] Figure 12 It is Figure 11 a cross-sectional view of the structure in;

[0048] Figure 13 It is Figure 12 a partial enlarged view at position J in.

[0049] In the figure:

[0050] 100, cleaning device; 200, fan; 201, impeller; 202, volute; 300, electric control box; 301, electric control outer box; 302, control component; 400, air box; 500, water supply box; 600, cleaning agent box;

[0051] 1, nozzle; 11, nozzle part; 12, positioning part;

[0052] 2. Heating device; 21. Heating box; 211. Box body; 2111. Steam outlet; 212. Boss part; 2121. Heating port; 213. Connecting pipe; 2131. Liquid inlet and outlet; 214. Steam pipe part; 215. Heating cavity; 22. Heating unit; 23. Thermostat; 24. Sealing ring;

[0053] 3. Installation box; 31. Box body; 311. Main box part; 312. Installation cavity; 3121. Heating installation cavity; 3122. Pipeline installation cavity; 3123. Threading port; 3124. Pipe perforation; 3125. Air hole; 313. Partition member; 314. Positioning boss ring part; 315. First flange part; 32. Cover body; 321. Main cover part; 322. Second flange part; 323. Positioning ring part;

[0054] 4. Pipeline assembly; 41. Driving pump; 42. Liquid inlet pipe; 43. Water supply pipe; 44. Cleaning pipe; 45. Liquid outlet pipe; 46. Cleaning agent pipe; 47. Drain pipe; 48. First air pressure balance pipe; 49. Second air pressure balance pipe; 401. Steam control valve; 402. Cleaning control valve; 403. Water supply control valve; 404. Liquid inlet control valve; 405. Cleaning agent control valve; 406. Exhaust check valve; 407. Intake check valve; 408. Liquid outlet control valve; 409. Drain control valve; 410. Cleaning check valve. Detailed implementation mode

[0055] The following further describes the present utility model in detail with reference to the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. In addition, it should be noted that for the convenience of description, only the parts related to the present utility model rather than all the structures are shown in the drawings.

[0056] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0057] In the present utility model, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0058] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "left" and "right" are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0059] Embodiment 1

[0060] This embodiment provides a cleaning device 100 applied to an oil fume exhaust device, which can be used to clean the fan 200 in the oil fume exhaust device, so as to better ensure the long-term use performance of the fan 200 and improve the use safety of the oil fume exhaust device.

[0061] As Figure 1 shown, in this embodiment, the cleaning device 100 includes a heating device 2, a nozzle 1 and a pipeline assembly 4. The pipeline assembly 4 includes a driving pump 41, a water supply pipe 43, a liquid outlet pipe 45 and a liquid inlet pipe 42. A steam outlet 2111 is provided at the upper part of the heating device 2, and a liquid inlet and outlet 2131 is provided at the lower part of the heating device 2; the steam outlet 2111 and the nozzle 1 are connected through a cleaning pipe 44. A steam control valve 401, a driving pump 41 and a cleaning control valve 402 are sequentially arranged on the cleaning pipe 44 along the fluid flow direction; the liquid outlet end of the water supply pipe 43 is connected to the cleaning pipe 44 and is located between the driving pump 41 and the steam control valve 401, and a water supply control valve 403 is provided on the water supply pipe 43; the liquid inlet end of the liquid outlet pipe 45 is connected to the liquid inlet and outlet 2131, the liquid outlet end of the liquid outlet pipe 45 is connected to the cleaning pipe 44 and is located between the driving pump 41 and the steam control valve 401, and a liquid outlet control valve 408 is provided on the liquid outlet pipe 45; the liquid inlet end of the liquid inlet pipe 42 is connected to the cleaning pipe 44 and is located between the cleaning control valve 402 and the driving pump 41, the liquid outlet end of the liquid inlet pipe 42 is connected to the liquid inlet and outlet 2131, and a liquid inlet control valve 404 is provided on the liquid inlet pipe 42.

[0062] The steam control valve 401, the cleaning control valve 402, the water supply control valve 403, the liquid inlet control valve 404, the liquid outlet control valve 408, and the driving pump 41 are all electrically connected to the controller of the fume exhaust device. The controller is used to execute the steam cleaning step of the cleaning method, specifically:

[0063] Step S101: Control the steam control valve 401 and the cleaning control valve 402 to close, and control the water supply control valve 403, the liquid inlet control valve 404, and the driving pump 41 to open to add cold water to the heating device 2.

[0064] Step S102: Control the water supply control valve 403 and the liquid inlet control valve 404 to close and the driving pump 41 to stop working, and control the heating device 2 to operate to heat the cold water to form hot steam.

[0065] Step S103: Control the steam control valve 401 and the cleaning control valve 402 to open and the driving pump 41 to work to control the hot steam to spray onto the impeller 201 of the fume exhaust device.

[0066] After repeating Step S103 to Step S104 a preset number of times, end the execution.

[0067] For the cleaning device 100 provided in this embodiment, since the heating device 2 can supply steam to the cleaning pipe 44 through heating to perform steam cleaning on the fan 200, and the heating device 2 can form hot water through heating, and the hot water is supplied to the cleaning pipe 44 through the liquid outlet pipe 45, hot water spraying on the impeller 201 can be realized. Thus, not only can hot water flushing of the fan 200 be realized, but also the steam cleaning requirement can be met, improving the cleaning effect of the cleaning device 100 on the fan 200. At the same time, since the liquid inlet end of the liquid inlet pipe 42 is connected to the cleaning pipe 44 and is located between the cleaning control valve 402 and the driving pump 41, and the water outlet end of the water supply end is connected to the cleaning pipe 44 and is located between the driving pump 41 and the steam control valve 401, one driving pump 41 is used to realize the liquid inlet drive for the heating device 2 and the flow drive of the steam to the cleaning pipe 44, reducing the driving cost, ensuring driving reliability, and effectively shortening the total pipeline length of the cleaning device 100, better realizing the integrated layout of each pipeline, improving the structural compactness of the cleaning device 100, and further reducing the floor space occupied by the cleaning device 100. Moreover, the liquid outlet end of the liquid outlet pipe 45 is connected to the cleaning pipe 44 and is located between the driving pump 41 and the steam control valve 401, enabling the steam cleaning and hot water cleaning to share most of the pipelines of the cleaning pipe 44, further improving the pipeline integration in the cleaning device 100, reducing the floor space occupied by the cleaning device 100, and lowering the structural cost of the cleaning device 100.

[0068] In one embodiment, the cleaning device 100 further includes a cleaning agent pipe 46. The liquid outlet end of the cleaning agent pipe 46 is connected to the cleaning pipe 44 and is located between the steam control valve 401 and the driving pump 41. A cleaning agent control valve 405 is provided on the cleaning agent pipe 46, and the cleaning agent control valve 405 is electrically connected to the controller.

[0069] The arrangement of the cleaning agent pipe 46 facilitates adding a cleaning agent into the heating chamber 215 of the heating device 2, so that a liquid containing the cleaning agent can be conveyed into the cleaning pipe 44, so as to soften the oil stain on the fan 200 through the action of the cleaning agent on the oil stain, and improve the cleaning function of the oil stain. At the same time, the liquid outlet end of the cleaning agent pipe 46 is connected to the cleaning pipe 44 and is located between the driving pump 41 and the steam control valve 401. When supplying the cleaning agent to the heating device 2, the cleaning agent control valve 405 and the liquid inlet control valve 404 are opened, so that the driving pump 41 drives the cleaning agent to flow through the cleaning agent pipe 46, the cleaning pipe 44 and the liquid inlet pipe 42 into the heating device 2 in sequence, avoiding the need for an additional driving structure, and facilitating shortening the length of the cleaning agent pipe 46, and realizing the integrated arrangement of the pipeline structure in the cleaning device 100.

[0070] It should be noted that the water inlet end of the water supply pipe 43 is connected to the water supply box 500, and the liquid inlet end of the cleaning agent pipe 46 is connected to the cleaning agent box 600.

[0071] With the above arrangement, the controller can control the cleaning device 100 to execute the first flushing step and the second flushing step. The first flushing step specifically includes:

[0072] Step S201: Control the cleaning agent control valve 405, the liquid inlet control valve 404 and the driving pump 41 to be opened, and the cleaning control valve 402, the water supply control valve 403, the steam control valve 401 and the liquid discharge control valve 409 to be closed, so as to add the cleaning agent into the heating device 2;

[0073] Step S202: Control the cleaning agent control valve 405, the liquid inlet control valve 404 and the driving pump 41 to be closed, and control the heating device 2 to operate to heat the cleaning agent;

[0074] Step S203: Control the heating device 2 to stop operating, and control the liquid outlet control valve 408, the cleaning control valve 402 and the driving pump 41 to start, so as to spray the heated cleaning agent onto the impeller 201;

[0075] Step S204: Control the water supply control valve 403, the liquid inlet control valve 404 and the driving pump 41 to start, and control the liquid outlet control valve 408 and the cleaning control valve 402 to be closed, so as to add cold water into the heating device 2;

[0076] Step S205: Control the water supply control valve 403, the liquid inlet control valve 404, and the drive pump 41 to close, and control the heating device 2 to operate to heat cold water to form hot water.

[0077] Step S206: Control the heating device 2 to stop operating, control the liquid outlet control valve 408, the cleaning control valve 402, and the drive pump 41 to start, and spray the heated water onto the impeller 20.

[0078] The second flushing step specifically includes:

[0079] Step S301: Control the water supply control valve 403, the cleaning agent control valve 405, the liquid inlet control valve 404, and the drive pump 41 to start, and control the steam control valve 401, the liquid outlet control valve 408, and the cleaning control valve 402 to close, and add cleaning agent and cold water inside the heating device 2.

[0080] Step S302: Control the water supply control valve 403, the cleaning agent control valve 405, the liquid inlet control valve 404, and the drive pump 41 to close, and control the heating device 2 to operate to heat the mixture of the cleaning agent and cold water.

[0081] Step S303: Control the liquid outlet control valve 408, the cleaning control valve 402, and the drive pump 41 to open, and spray the heated mixture onto the impeller 201.

[0082] Furthermore, the above settings enable the cleaning device 100 to have multiple cleaning modes, and the multiple cleaning modes include a strengthened cleaning mode, a normal cleaning mode, and a quick cleaning mode.

[0083] Among them, the strengthened cleaning mode is specifically to sequentially execute the steam cleaning step and the first flushing step. That is, first, steam is introduced to the impeller 201 to soak the impeller 201 with steam, achieving the effect of softening the oil stains on the impeller 201; secondly, hot cleaning agent is sprayed onto the impeller 201, so that the grease in the oil stains can act with the high-concentration cleaning agent and gradually melt, promoting the separation of the grease from the surface of the impeller 201; finally, hot water is sprayed onto the impeller 201, so that the hot water flushes and cleans the impeller 201, thereby promoting the detachment of the oil stains on the surface of the impeller 201 and achieving a complete cleaning of the surface of the impeller 201.

[0084] When the normal cleaning mode is selected, the first flushing step is executed, and the cleaning process is specifically as follows: First, hot cleaning agent is sprayed onto the impeller 201, so that the grease in the oil stains can act with the high-concentration cleaning agent and gradually melt, promoting the separation of the grease from the surface of the impeller 201; then, hot water is sprayed onto the impeller 201, so that the hot water flushes and cleans the impeller 201, thereby promoting the detachment of the oil stains on the surface of the impeller 201 and achieving the cleaning of the surface of the impeller 201.

[0085] After the quick wash mode is selected, the second flushing step is performed. The specific cleaning process is as follows: First, a hot mixture of cleaning agent and water is formed, and then the mixture is sprayed onto the impeller 201 to achieve the flushing and cleaning of the impeller 201.

[0086] As can be seen from the above, the cleaning effects of the quick wash mode, the normal wash mode, and the enhanced wash mode gradually increase, but the cleaning time and cost required also increase simultaneously. By setting the three cleaning modes, the controller or the user can select a suitable cleaning mode according to actual needs, so as to ensure the complete cleaning of the impeller 201 while reducing the cleaning cost and improving the flexibility of cleaning.

[0087] After the cleaning is completed, if there is liquid left in the heating chamber 215 of the heating device 2, it is likely to cause bacteria to breed inside the heating chamber 215, affecting the use of the next cleaning. In an embodiment, to discharge the liquid in the heating device 2, the cleaning device 100 includes a drain pipe 47. The liquid inlet end of the drain pipe 47 is connected to the cleaning pipe 44 and is located between the driving pump 41 and the cleaning control valve 402. The liquid outlet end of the drain pipe 47 is connected to the water supply pipe 43 and is located upstream of the water supply control valve 403. The drain control valve 409 is communicatively connected to the controller.

[0088] The setting of the drain pipe 47 enables the liquid inside the heating device 2 to be discharged to the water supply pipe 43 through the cleaning pipe 44 and the drain pipe 47, and then flows into the water supply box through the water supply pipe 43, thereby avoiding the accumulation of liquid in the heating device 2 and reducing the probability of bacteria breeding inside the heating device 2. At the same time, since the liquid inlet end of the drain pipe 47 is connected to the cleaning pipe 44 and is located between the cleaning control valve 402 and the driving pump 41, and the liquid outlet end of the drain pipe 47 is connected to the water supply pipe 43, it can effectively shorten the required length of the cleaning pipe 44 while realizing the drain drive, further improving the integration of the pipeline in the heating device 2, reducing costs, and reducing the floor space.

[0089] The controller is further configured to execute a drain step. The drain step specifically includes: controlling the drain control valve 409, the liquid outlet control valve 408, and the driving pump 41 to start, and controlling the liquid inlet control valve 404, the steam control valve 401, the water supply control valve 403, the cleaning agent control valve 405, and the cleaning control valve 402 to close, so that the liquid inside the heating device 2 is discharged to the water supply pipe 43 through the liquid outlet pipe 45, the cleaning pipe 44, and the drain pipe 47 in sequence.

[0090] When the heating device 2 heats the cleaning agent or heats cold water to form hot water, since the heating chamber 215 of the heating device 2 is a closed structure, the heating process will cause the internal air pressure in the heating chamber 215 to increase. To avoid excessive internal air pressure in the heating chamber 215, in one embodiment, a first air pressure balance pipe 48 is connected to the heating chamber 215 of the heating device 2. An air outlet check valve 406 is provided on the first air pressure balance pipe 48. The air outlet check valve 406 only allows gas to flow out of the heating chamber 215 through the air outlet check valve 406 from the heating chamber 215, and the air outlet check valve 406 can be opened when the pressure in the heating chamber 215 is greater than a preset pressure.

[0091] With the above setting, when the pressure in the heating chamber 215 increases to the preset pressure, the gas in the heating chamber 215 will flow out through the first air pressure balance pipe 48, avoiding risks such as explosion caused by excessive pressure in the heating chamber 215, and improving the use reliability and safety of the cleaning device 100; at the same time, this setting also enables the water flow to enter the heating chamber 215 smoothly when supplying water to the heating chamber 215 of the heating device 2, avoiding the increase in air pressure in the heating chamber 215 that may prevent water from entering the heating chamber 215.

[0092] In one embodiment, the inlet end of the first air pressure balance pipe 48 is connected to the cleaning pipe 44 and is located upstream of the steam control valve 401; the outlet end of the first air pressure balance pipe 48 is connected to the water supply pipe 43 and is located upstream of the water supply control valve 403. With this setting, the first air pressure balance pipe 48 is connected between the cleaning pipe 44 and the water supply pipe 43, which can shorten the length of the first air pressure balance pipe 48, improve the structural integration of the cleaning device 100, and also reduce the number of openings in the heating device 2; furthermore, since the outlet end of the first air pressure balance pipe 48 is connected to the water supply pipe 43, when steam is generated in the heating chamber 215, the steam overflowing through the first air pressure balance pipe 48 can be directly introduced into the water supply pipe 43, avoiding the escape of high-temperature steam everywhere, and also being able to heat the inner cavity of the water supply pipe 43 with the steam at the escape point, thus facilitating the preheating of cold water.

[0093] In another embodiment, the inlet end of the first air pressure balance pipe 48 can be directly connected to the heating chamber 215, that is, the first air pressure balance pipe 48 penetrates through the heating chamber 215 in a sealed manner.

[0094] Furthermore, a second air pressure balance pipe 49 is also connected to the heating chamber 215 of the heating device 2. An air inlet check valve 407 is provided on the second air pressure balance pipe 49. The air inlet check valve 407 only allows external gas to enter the heating chamber 215 through the second air pressure balance pipe 49.

[0095] When supplying a fluid such as steam or hot water to the cleaning pipe 44, since the fluid in the heating chamber 215 is pumped into the cleaning pipe 44 by the driving pump 41, the air pressure in the heating chamber 215 decreases. When the air pressure decreases to a certain extent, the fluid in the heating chamber 215 cannot flow out of the heating chamber 215, thus affecting the cleaning. By providing the second air pressure balance pipe 49, when the pressure in the heating chamber 215 decreases to a certain extent, external gas can enter the interior of the heating chamber 215 through the second air pressure balance pipe 49, thereby balancing the air pressure in the heating chamber 215, ensuring that the fluid in the heating chamber 215 can be smoothly discharged into the cleaning pipe 44, ensuring the smooth progress of the cleaning process, and improving the cleaning effect and cleaning reliability.

[0096] In one embodiment, a cleaning one-way valve 410 is further provided on the cleaning pipe 44. The cleaning one-way valve 410 is located downstream of the cleaning control valve 402, and the cleaning one-way valve 410 only allows the fluid to flow from the cleaning control valve 402 to the nozzle 1, thereby avoiding the backflow of gas or fluid into the interior of the heating chamber 215 through the cleaning pipe 44 and improving the use reliability of the cleaning device 100.

[0097] Embodiment Two

[0098] This embodiment provides a cleaning device 100, and the cleaning device 100 provided in this embodiment is a further improvement based on the cleaning device 100 in Embodiment One. The same structures as those in Embodiment One will not be described in detail in this embodiment.

[0099] As Figures 2 to 4 shown, in this embodiment, to further achieve the integrated setting of the cleaning device 100, the cleaning device 100 further includes an installation box 3, a box body 31 with an open upper end and a cover body 32 covering the open end of the box body 31. An installation cavity 312 is formed by surrounding the box body 31 and the solid. The pipeline assembly 4 and the heating device 2 are both located in the installation cavity 312, and the water inlet end of the water supply pipe 43 and the liquid outlet end of the cleaning pipe 44 extend out of the installation box 3. By providing the installation box 3, it is beneficial to achieve the modular setting of the cleaning device 100, thereby facilitating the overall installation, disassembly, and handling of the cleaning device, and improving the integration of the cleaning device 100.

[0100] In one embodiment, the box body 31 has a first installation groove with an open upper end, and the cover body 32 has a second installation groove with an open lower end. The box body 31 and the cover body 32 are snap-connected, so that the first installation groove and the second installation groove jointly form an installation cavity. This setting enables the upper ends of the pipeline assembly 4 and the heating device 2 to extend upward out of the box body 31 after the cover body 32 is detached from the box body 31, thereby facilitating the disassembly, assembly, and maintenance of the pipeline assembly 4 and the heating device 2. In other embodiments, the cover body 32 can be integrally in a plate-like structure, and the cover body 32 covers the upper end opening of the box body 31 to close the notch of the first installation groove.

[0101] To better achieve the assembly of the cover body 32 and the box body 31, the box body 31 includes a main box portion 311 with an open upper end, and a first flange portion 315 extends outward from the opening edge of the main box portion 311; the cover body 32 has a main cover portion 321 with an open lower end, and a second flange portion 322 extends outward from the opening edge of the main cover portion 321; when the box body 31 and the cover body 32 are buckled, the first flange portion 315 is attached to the second flange portion 322, and the box body 31 and the cover body 32 are connected by fasteners passing through the first flange portion 315 and the second flange portion 322, and a plurality of fasteners are arranged at intervals along the circumferential direction of the box body 31 to ensure the assembly reliability of the box body 31 and the cover body 32. By arranging the fasteners outside the installation cavity, it is possible to better avoid the interference between the fasteners and the pipeline assembly 4 and improve the assembly efficiency of the installation box 3.

[0102] To improve the installation convenience of the heating device 2 and the pipeline assembly 4 in the installation box 3, in one embodiment, the installation cavity includes a heating installation cavity 3121 and a pipeline installation cavity 3122 horizontally separated by a partition member 313. The heating device 2 is installed in the heating installation cavity 3121, and the pipeline assembly 4 is installed in the pipeline installation cavity 3122. Thus, the heating device 2 and the pipeline assembly 4 can be installed in separate areas, which is conducive to realizing the installation positioning of the pipeline assembly 4 and the heating device 2, reducing the probability of mutual interference between the two, and improving the layout rationality and structural compactness of the heating device 2 and the pipeline assembly 4 in the installation cavity.

[0103] In one embodiment, a wire passing opening 3123 is formed in the bottom of the heating installation cavity 3121, and the connecting wires of the heating device 2 pass through the wire passing opening 3123 and extend out of the installation box 3 to facilitate the wiring of the heating device 2. A plurality of pipe through holes 3124 are formed in the cavity wall of the pipeline installation cavity 3122, and the water supply pipe 43 and the cleaning pipe 44 pass through the pipe through holes 3124 and extend out of the installation box 3.

[0104] Furthermore, a plurality of air holes 3125 are formed in the cavity wall of the pipeline installation cavity 3122, and the plurality of air holes 3125 communicate the pipeline installation cavity 3122 with the external environment to facilitate the intake of air by the second air pressure balance pipe 49. At the same time, it is beneficial to dissipate heat from each valve structure in the pipeline assembly 4 and improve the operation safety and reliability of the pipeline assembly 4.

[0105] As Figures 4 to 8As shown, in one embodiment, the heating device 2 includes a heating box 21, a heating unit 22, and a temperature controller 23. Among them, the heating box 21 has an upwardly open heating cavity 215, and a heating port 2121 is formed at the bottom of the heating cavity 215. The cover body 32 seals the open end of the heating cavity 215; the heating unit 22 is hermetically installed at the heating port 2121 and seals the heating port 2121; the temperature controller 23 is disposed on the side of the heating unit 22 away from the heating cavity 215 and is electrically connected to the heating unit 22. The temperature controller 23 is used to control the heating power of the heating unit 22. That is, the heating box 21, the heating unit 22, and the cover body 32 cooperate to achieve the closure of the heating cavity 215.

[0106] The structural arrangement of this heating device 2 is conducive to simplifying the structure of the heating device 2, enabling the heating device 2 to not require additional structures such as an upper cover, thereby improving the structural integration and compactness of the heating device 2, and further reducing the height of the cleaning device 100 in the vertical direction; at the same time, by providing the temperature controller 23, it is conducive to controlling the start / stop and heating power of the heating unit 22 in terms of temperature, thereby improving the use safety and reliability of the heating device 2.

[0107] Furthermore, the heating unit 22 has a disk-shaped structure. The upper end of the heating unit 22 extends into the heating cavity 215, and a sealing ring 24 is provided between the heating device 2 and the bottom of the heating cavity 215 to seal the connection between the heating unit 22 and the bottom of the heating cavity 215.

[0108] In one embodiment, the sealing ring 24 has an annular structure, and the sealing ring 24 includes a radial sealing portion, an axial sealing portion, and a positioning inner ring portion that are connected in sequence from outside to inside. The radial sealing portion and the positioning inner ring portion are respectively located on the upper and lower sides of the axial sealing portion. The axial sealing portion is clamped between the lower side of the heating disk and the bottom of the heating cavity 215, the radial sealing portion is clamped between the outer side wall of the heating disk and the side wall of the heating cavity 215, and the positioning inner ring portion is inserted inside the heating port 2121. This can ensure the installation sealing effect of the heating disk and the heating box 21.

[0109] In one embodiment, the heating box 21 includes a box body 211 with an open upper end and a boss portion 212 protruding from the bottom of the box body 211. The cross-sectional area of the boss portion 212 is smaller than that of the box body 211, and the above-mentioned heating port 2121 is formed at the bottom of the boss portion 212. The heating cavity 215 includes a lower cavity portion surrounded by the boss portion 212 and an upper cavity portion surrounded by the box body 211. The liquid inlet and outlet 2131 is arranged on the side wall of the boss portion 212. With this arrangement, the liquid entering the heating cavity 215 from the liquid inlet and outlet 2131 will enter the lower cavity portion. Since the cross-sectional area of the lower cavity portion is smaller than that of the upper cavity portion, and the heating port 2121 is located at the bottom of the lower cavity portion, when the amount of liquid entering the heating cavity 215 is small, the liquid can be concentrated in the lower cavity portion and heated intensively by the heating unit 22, improving the heating efficiency of the heating unit 22 for the liquid and reducing energy consumption.

[0110] To better realize the installation of the heating device 2 in the heating installation cavity 3121, an annular positioning boss portion 314 protrudes from the bottom of the heating installation cavity 3121. The positioning boss portion 314 is arranged around the wire passing port 3123, and the heating unit 22, the temperature controller 23 and the boss portion 212 are all located inside the positioning boss portion 314. The bottom of the main box portion 311 abuts against the end face of the positioning boss portion 314. Thus, through the abutment between the positioning boss portion 314 and the bottom of the main box portion 311, the positioning and limiting of the installation position of the heating box 21 in the vertical direction can be realized, and it is beneficial to realize the spaced arrangement of the boss portion 212 relative to the bottom of the heating installation cavity 3121, thereby facilitating the installation of the temperature controller 23 in the heating installation cavity 3121 and reducing the interference between the temperature controller 23 and the bottom of the heating installation cavity 3121.

[0111] In one embodiment, a positioning ring portion 323 protrudes downward from the bottom of the second installation groove. The shape of the positioning ring portion 323 is adapted to the opening shape of the heating cavity 215. The positioning ring portion 323 is inserted and matched with the upper end of the heating box 21, and the bottom of the second installation groove abuts against the upper end opening of the installation box 3. Thus, through the cooperation of the top of the box body 31 and the positioning boss portion 314, the complete limiting of the heating box 21 in the vertical direction is realized, preventing the heating device 2 from shaking in the heating installation cavity 3121 in the vertical direction, and facilitating the closing of the upper open end of the heating cavity 215 by the cover body 32.

[0112] In one embodiment, the positioning ring portion 323 is located inside the heating box 21. In another embodiment, the positioning ring portion 323 can also be located outside the heating box 21. To further realize the closing of the upper open end of the heating cavity 215, a sealing structure can be provided between the positioning ring portion 323 and the upper end of the heating box 21 to seal the assembly gap between the positioning ring portion 323 and the heating box 21, thereby preventing steam from leaking through this gap.

[0113] In order to improve the connection of the liquid inlet pipe 42 at the steam inlet and outlet, in one embodiment, the heating device 2 further includes a connecting pipe 213. The connecting pipe 213 is disposed at the steam inlet and outlet, and the connecting pipe 213 at least passes through the positioning convex ring portion 314. The liquid inlet pipe 42 is connected to the connecting pipe 213.

[0114] Further, a steam pipe portion 214 extends outwardly corresponding to the steam outlet 2111 of the box body 211, and the cleaning pipe 44 is connected to the steam pipe portion 214.

[0115] Embodiment III

[0116] As Figure 9 and Figure 10 shown, this embodiment provides an oil fume exhaust device, including a fan 200 and a cleaning device 100. The nozzle 1 of the cleaning device 100 is arranged facing the impeller 201 of the fan 200, and the controller controls the cleaning device 100 to clean the impeller 201. The cleaning device 100 adopts the cleaning device 100 in Embodiment I or Embodiment II.

[0117] Specifically, the oil fume exhaust device includes an air box 400. The air box 400 has an air cavity. The fan 200 is installed in the air cavity. The controller and the heating device 2 are both installed outside the air box 400, and the nozzle 1 is installed on the volute 202 of the impeller 201 to ensure the relative position reliability between the nozzle 1 and the impeller 201.

[0118] The oil fume exhaust device provided in this embodiment can clean the impeller 201 by adopting the above-mentioned cleaning device 100, improve the long-term use performance of the oil fume exhaust device, and improve the use safety and reliability of the oil fume exhaust device; at the same time, it can reduce the occupied space of the cleaning device 100 in the oil fume exhaust device, improve the overall structural compactness of the oil fume exhaust device, and reduce the use cost of the oil fume exhaust device.

[0119] In one embodiment, the oil fume exhaust device is a range hood, which includes a smoke collecting hood having a smoke collecting cavity. The air box 400 is installed on the upper side of the smoke collecting hood, and the smoke collecting hood has a smoke inlet communicating with the smoke collecting cavity. In another embodiment, the oil fume exhaust device can also be an integrated stove.

[0120] To improve the installation convenience of the heating device 2, in one embodiment, the oil fume exhaust device includes an electric control box 300. The electric control box 300 includes an electric control outer box 301 and a control component 302 disposed inside the electric control outer box 301. The control component 302 includes a controller. The electric control box 300 is installed on the outer side of the top of the air box 400, and the heating device 2 is installed on the top of the electric control box 300. Thereby, the distance between the heating device 2 and the controller can be shortened, which is beneficial to realizing the electrical connection between the electrical components inside the heating device 2 and the controller, shortening the wires connecting the electrical components inside the heating device 2 and the controller, and improving the overall structural compactness of the oil fume exhaust device.

[0121] As Figures 11 to 13 shown, in one embodiment, the nozzle 1 includes a nozzle portion 11 and a positioning portion 12 connected to one end of the nozzle portion 11. The volute 202 of the fan 200 is provided with an installation opening. The nozzle portion 11 is inserted into the installation opening, and the surface of the positioning portion 12 away from the impeller 201 is attached to the inner surface of the volute 202, thereby realizing the stable and reliable installation of the nozzle 1 on the volute 202. The extending direction of the nozzle portion 11 is arranged at an angle relative to the radial direction where the installation opening is located, so that the fluid ejected from the nozzle can drive the impeller 201 to rotate.

[0122] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A cleaning device, characterized in that: The invention comprises a heating device (2), a nozzle (1) and a pipeline assembly (4), wherein the pipeline assembly (4) comprises a driving pump (41), a water supply pipe (43), a liquid outlet pipe (45) and a liquid inlet pipe (42); a steam outlet (2111) is arranged at the upper part of the heating device (2), and a liquid inlet and outlet (2131) is arranged at the lower part of the heating device (2); The steam outlet (2111) and the nozzle (1) are connected via a cleaning pipe (44), and the cleaning pipe (44) is provided with a steam control valve (401), a driving pump (41) and a cleaning control valve (402) in sequence along the fluid flow direction; The liquid outlet end of the water supply pipe (43) is connected to the cleaning pipe (44) and is located between the driving pump (41) and the steam control valve (401), and a water supply control valve (403) is provided on the water supply pipe (43); The liquid inlet end of the liquid outlet pipe (45) is connected to the liquid inlet and outlet (2131), the liquid outlet end of the liquid outlet pipe (45) is connected to the cleaning pipe (44) and is located between the driving pump (41) and the steam control valve (401), and a liquid outlet control valve (408) is provided on the liquid outlet pipe (45); The liquid inlet end of the liquid inlet pipe (42) is connected to the cleaning pipe (44) and is located between the cleaning control valve (402) and the driving pump (41); the liquid outlet end of the liquid inlet pipe (42) is connected to the liquid inlet and outlet (2131); and a liquid inlet control valve (404) is provided on the liquid inlet pipe (42).

2. The cleaning device according to claim 1, characterized in that: The cleaning device further comprises a cleaning agent tube (46), wherein the liquid inlet end of the cleaning agent tube (46) is used to be connected to the cleaning agent box (600), the liquid outlet end of the cleaning agent tube (46) is connected to the cleaning pipe (44) and is located between the driving pump (41) and the steam control valve (401), and the cleaning agent tube (46) is provided with a cleaning agent control valve (405).

3. The cleaning device according to claim 1, characterized in that: The cleaning device further comprises a first air pressure balance pipe (48), a first end of the first air pressure balance pipe (48) being in communication with the outside, a second end of the first air pressure balance pipe (48) being in communication with the heating chamber (215) of the heating device (2), and an air outlet check valve (406) being provided on the first air pressure balance pipe (48), the air outlet check valve (406) only allowing the gas in the heating chamber (215) to flow out through the first air pressure balance pipe (48); And / or, the cleaning device further comprises a second air pressure balance pipe (49), one end of the second air pressure balance pipe (49) being connected to the heating chamber (215) of the heating device (2), the second end of the second air pressure balance pipe (49) being located outside the heating chamber (215), and an air intake check valve (407) being provided on the second air pressure balance pipe (49), the air intake check valve (407) only allowing external air to flow into the heating chamber (215).

4. The cleaning device according to claim 3, characterized in that: The air inlet end of the first air pressure balance pipe (48) is connected to the cleaning pipe (44) and is located upstream of the steam control valve (401); And / or, the air outlet end of the first air pressure balance pipe (48) is connected to the water supply pipe (43) and is located upstream of the water supply control valve (403).

5. The cleaning device according to claim 1, characterized in that: The cleaning device further comprises a liquid discharge pipe (47), wherein a liquid inlet end of the liquid discharge pipe (47) is connected to the cleaning pipe (44) and is located between the driving pump (41) and the cleaning control valve (402), a liquid outlet end of the liquid discharge pipe (47) is connected to the water supply pipe (43) and is located upstream of the water supply control valve (403), and a liquid discharge control valve (409) is provided on the liquid discharge pipe (47); And / or, a cleaning one-way valve (410) is provided on the cleaning pipe (44), and the cleaning one-way valve (410) is located between the nozzle (1) and the cleaning control valve (402), and the cleaning one-way valve (410) only allows fluid to flow from the cleaning control valve (402) to the nozzle (1).

6. The cleaning device according to any one of claims 1 to 5, characterized in that: The cleaning device further comprises an installation box (3), the installation box (3) comprising a box body (31) with an open upper end and a cover body (32) covering the open end of the box body (31), the box body (31) and the cover body (32) together enclose a mounting cavity (312), the pipeline assembly (4) and the heating device (2) are both located in the mounting cavity (312), and the water inlet end of the water supply pipe (43) and the liquid outlet end of the cleaning pipe (44) both extend out of the installation box (3).

7. The cleaning device according to claim 6, characterized in that: The installation cavity (312) is divided into a heating installation cavity (3121) and a pipeline installation cavity (3122) horizontally and side by side by a partition component (313); the heating device (2) is installed in the heating installation cavity (3121); the pipeline assembly (4) is installed in the pipeline installation cavity (3122); a cavity wall of the pipeline installation cavity (3122) is provided with a plurality of pipe through-holes (3124); the water supply pipe (43) and the cleaning pipe (44) extend out of the installation box (3) through the pipe through-holes (3124); And / or, the box body (31) includes a first mounting groove with an open upper end, the cover body (32) includes a second mounting groove with an open downward end, the first mounting groove and the second mounting groove cooperate to form the mounting cavity (312), and the upper ends of the pipeline assembly (4) and the heating device (2) are higher than the upper end of the box body (31).

8. The cleaning device according to claim 6, characterized in that: The heating device (2) comprises: A heating box (21) having a heating chamber (215), wherein a heating port (2121) is provided at the bottom of the heating chamber (215); A heating unit (22) is sealed and installed at the heating port (2121); A temperature controller (23) is arranged on a side of the heating unit (22) away from the heating chamber (215) and is electrically connected to the heating unit (22), and the temperature controller (23) is used to control the heating power of the heating unit (22).

9. The cleaning device according to claim 8, characterized in that: The heating box (21) comprises a box body (211) and a boss portion (212) protruding downward from the bottom of the box body (211); the cross-sectional area of ​​the boss portion (212) is smaller than the cross-sectional area of ​​the box body (211); the bottom of the boss portion (212) is provided with the heating port (2121); the side wall of the boss portion (212) is provided with the liquid inlet and outlet (2131); and the top of the box body (211) is provided with the steam outlet (2111); And / or, the upper end of the heating box (21) is open, and the cover (32) blocks the upper end of the heating box (21) to close the upper end of the heating chamber (215).

10. The cleaning device according to claim 9, characterized in that: The bottom of the installation cavity (312) is provided with a positioning convex ring portion (314); the boss portion (212), the heating unit (22) and the temperature controller (23) are all located on the inner side of the positioning convex ring portion (314); the end surface of the positioning convex ring portion (314) abuts against the lower end surface of the box body (211); the upper end side wall of the box body (211) is provided with a steam outlet (2111); and the side wall of the boss portion (212) is provided with a liquid inlet and outlet (2131); And / or, a positioning ring portion (323) is protruding downwardly from the lower side surface of the cover body (32), and the positioning ring portion (323) is plug-fitted with the upper end of the heating box (21).

11. A fume extraction device, comprising a bellows (400) and a fan (200) arranged in the bellows (400), characterized in that: It also comprises a cleaning device as claimed in any one of claims 1 to 10, wherein the cleaning device is mounted on the bellows (400), and the nozzle (1) is arranged toward the impeller (201) of the fan (200).

12. The oil fume extraction device according to claim 11, characterized in that: An electric control box (300) is arranged on the top of the wind box (400), the cleaning device is installed on the upper side of the electric control box (300), and the electrical components in the pipeline assembly (4) are electrically connected to the controller in the electric control box (300).

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