Range hood and control method

Abstract

The invention provides a range hood and a control method, the range hood comprises: an oil smoke suction module, the oil smoke suction module comprises an oil smoke suction fan, the oil smoke suction fan comprises an oil smoke suction shell group and an oil smoke suction impeller, and the oil smoke suction impeller is installed in an oil smoke suction cavity enclosed by the oil smoke suction shell group; the refrigeration module comprises an evaporator and a water receiving box, and the water receiving box is arranged below the evaporator so as to collect condensate water flowing down through the evaporator; the heat dissipation module comprises a condenser and a heat dissipation fan, the condenser communicates with the evaporator, and the heat dissipation fan is arranged on the side portion of the condenser; the spraying module comprises a vaporization mixing channel and a nozzle which are communicated with each other, and the air outlet part of the heat dissipation fan is selectively communicated with the oil smoke suction cavity and / or the vaporization mixing channel. By means of the technical scheme, the technical problem that in the prior art, heat generated by a condenser of a range hood with a refrigeration assembly cannot be effectively utilized can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of range hoods, and in particular to a range hood and a control method thereof. Background Art

[0002] At present, various structures of refrigeration type range hoods are disclosed in the prior art, and some range hoods have a refrigeration component added on the basis of the range hood platform, so that all functions of the range hood can be realized while the function of air conditioning refrigeration can be realized.

[0003] However, in order to avoid the heat of the condenser of the refrigeration assembly from being blown into the room and further increasing the indoor temperature, the heat of the condenser is generally blown directly to the outside of the room, which will cause a large amount of heat from the condenser to be wasted and cannot be effectively utilized. Summary of the invention

[0004] The main purpose of the present invention is to provide a range hood and a control method to solve the technical problem in the prior art that the heat received by the condenser of the range hood with a refrigeration component cannot be effectively utilized.

[0005] In order to achieve the above object, according to one aspect of the present invention, a range hood is provided, comprising:

[0006] An oil fume suction module, wherein the oil fume suction module comprises an oil fume suction fan, wherein the oil fume suction fan comprises an oil fume suction shell group and an oil fume suction impeller, and the oil fume suction impeller is installed in an oil fume suction cavity surrounded by the oil fume suction shell group;

[0007] A refrigeration module and a heat dissipation module, wherein the refrigeration module comprises an evaporator and a water receiving box, wherein the water receiving box is arranged below the evaporator to collect condensed water flowing down through the evaporator; the heat dissipation module comprises a condenser and a heat dissipation fan, wherein the condenser is arranged in communication with the evaporator, and the heat dissipation fan is arranged on the side of the condenser;

[0008] A spray module, the spray module comprising a vaporization mixing channel and a nozzle which are connected to each other, the vaporization mixing channel is used to be connected to the water receiving box, and the nozzle is connected to the oil fume suction chamber;

[0009] Wherein, the air outlet of the heat dissipation fan can be selectively connected to the oil fume suction chamber and / or the vaporization mixing channel.

[0010] Furthermore, the heat dissipation fan has a first heat dissipation outlet and a second heat dissipation outlet arranged at intervals, and the first heat dissipation outlet is arranged toward the vaporization mixing channel;

[0011] Wherein, the first heat dissipation outlet can be selectively connected or disconnected with the vaporization mixing channel; and / or,

[0012] The second heat dissipation outlet can be selectively connected to or disconnected from the oil fume suction chamber.

[0013] Furthermore, the heat dissipation fan comprises a heat dissipation shell group, and the heat dissipation shell group is provided with the first heat dissipation outlet and the second heat dissipation outlet; the heat dissipation fan also comprises:

[0014] a first blocking member, movably disposed at the first heat dissipation outlet to block or avoid the first heat dissipation outlet; and / or,

[0015] The second blocking member is movably disposed at the second heat dissipation outlet to block or avoid the second heat dissipation outlet.

[0016] Furthermore, the oil fume housing assembly is provided with a first communication port and a second communication port at intervals, and the first communication port and the second communication port are both connected to the oil fume suction chamber;

[0017] Wherein, the nozzle is arranged toward the first communicating port or extends into the first communicating port; and / or,

[0018] The second heat dissipation outlet can be selectively connected to or disconnected from the second communication port.

[0019] Further, the first heat dissipation outlet has an inlet end and an outlet end which are arranged opposite to each other, and the outlet end is located on a side of the inlet end close to the vaporization mixing channel; along the extension direction from the inlet end to the outlet end, the flow cross section of the first heat dissipation outlet gradually decreases; and / or,

[0020] The first communication port is located at the upper part of the oil fume housing assembly.

[0021] Further, the oil fume suction shell group includes a first volute and a first volute tongue, the first volute and the first volute tongue form an oil fume exhaust port connected to the oil fume suction chamber, and the first volute is provided with the first connecting port and the second connecting port; and / or,

[0022] The oil smoke suction impeller is a first centrifugal fan blade, the heat dissipation fan includes a second centrifugal fan blade, and the central axis of the first centrifugal fan blade and the central axis of the second centrifugal fan blade are arranged in parallel; and / or,

[0023] The heat dissipation fan is arranged above the range fumes suction fan.

[0024] Furthermore, the spray module also includes:

[0025] A pressurizing member, wherein the pressurizing member has a pressurizing channel, wherein the pressurizing channel is connected to the vaporization mixing channel; and / or,

[0026] a temperature detection member, disposed at the nozzle, for detecting the temperature at the nozzle; and / or,

[0027] A water pump, wherein the water inlet of the water pump is communicated with the water receiving box, and the water outlet of the water pump is communicated with the vaporization mixing channel.

[0028] Furthermore, the range hood further comprises a water level detection component, and the water level detection component is arranged in the water receiving box; and / or,

[0029] The evaporator and the condenser are spaced apart to form an air inlet channel, the heat dissipation fan is arranged on a side of the condenser away from the evaporator, and the heat dissipation fan drives the airflow in the air inlet channel to enter the heat dissipation fan through the condenser; the refrigeration module also includes an indoor fan, and the indoor fan is arranged on a side of the evaporator away from the condenser, and the indoor fan drives the airflow in the air inlet channel to enter the indoor fan through the evaporator.

[0030] Furthermore, the range hood further comprises:

[0031] An upper box body, in which the oil fume suction module, the refrigeration module, the heat dissipation module and the spray module are all installed;

[0032] The lower box body is arranged at the bottom of the upper box body, and the lower box body is provided with a refrigeration outlet communicating with the refrigeration cavity of the refrigeration module and an oil fume inlet communicating with the oil fume suction cavity of the oil fume suction module.

[0033] Further, the oil fume inlet is located at a side of the lower box body away from the upper box body; and / or,

[0034] The refrigeration outlet is located at the side of the lower box; and / or,

[0035] The range hood further comprises an oil cup, and the oil cup is arranged below the oil fume inlet.

[0036] According to another aspect of the present invention, a control method is provided, which is applicable to the range hood provided above, and the control method comprises:

[0037] Obtaining the water level in the water receiving box of the range hood;

[0038] The air outlet of the heat dissipation fan of the range hood is controlled according to the water level in the water receiving box to selectively connect or disconnect with the vaporization mixing channel of the range hood.

[0039] Further, the air outlet of the heat dissipation fan of the range hood is controlled to be selectively connected or disconnected with the vaporization mixing channel of the range hood according to the water level in the water receiving box, including:

[0040] When the water level in the water receiving box is greater than the first water level H1, the air outlet of the heat dissipation fan is controlled to communicate with the vaporization mixing channel;

[0041] When the water level in the water receiving box is less than or equal to the first water level H1, the air outlet of the heat dissipation fan is controlled to be disconnected from the vaporization mixing channel.

[0042] Furthermore, when the water level in the water receiving box is greater than the first water level H1, the control method further includes:

[0043] Determine whether the water level in the water receiving box is greater than the second water level H2;

[0044] When the water level in the water receiving box is greater than the second water level H2, increasing the speed of conveying water to the vaporization mixing channel;

[0045] When the water level in the water receiving box is less than or equal to the second water level H2, the water conveying speed of the vaporization mixing channel is kept unchanged or reduced.

[0046] Furthermore, when the air outlet of the heat dissipation fan is connected to the vaporization mixing channel, the control method further includes:

[0047] obtaining the temperature of the water vapor at the nozzle of the range hood;

[0048] The rotation speed of the heat dissipation fan is controlled according to the temperature of the water vapor at the nozzle.

[0049] Further, controlling the rotation speed of the heat dissipation fan according to the temperature of the water vapor at the nozzle includes:

[0050] When the temperature of the water vapor at the nozzle is greater than a preset temperature, controlling the speed of the heat dissipation fan to remain unchanged or to decrease;

[0051] When the temperature of the water vapor at the nozzle is less than or equal to a preset temperature, the rotation speed of the heat dissipation fan is controlled to increase.

[0052] By applying the technical solution of the present invention, by connecting the air outlet of the heat dissipation fan with the oil fume suction chamber, the hot air of the heat dissipation fan can be sucked away and discharged through the oil fume suction chamber, specifically, it can be discharged outdoors to avoid the high-temperature hot air affecting the indoor temperature; by connecting the heat dissipation fan with the vaporization mixing channel, it is convenient to effectively utilize the high temperature of the heat dissipation fan to vaporize the water in the water receiving box at high temperature, and spray the steam into the oil fume suction chamber through the nozzle, so that the oil fume suction chamber and the oil fume suction impeller located in the oil fume suction chamber are cleaned by the high-temperature steam, so as to effectively clean the oil fume suction impeller while taking away the oil fume. The above structure can realize the effective utilization of the heat of the condenser. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0054] Figure 1 A schematic diagram showing a structure in which the first heat dissipation outlet and the second heat dissipation outlet of the range hood provided by an embodiment of the present invention are both opened;

[0055] Figure 2 It shows a schematic structural diagram of a range hood according to an embodiment of the present invention with the second heat dissipation outlet opened;

[0056] Figure 3 A side view of a range hood provided according to an embodiment of the present invention is shown;

[0057] Figure 4 A schematic diagram showing the operating principle of a range hood provided according to an embodiment of the present invention is shown;

[0058] Figure 5 It shows a schematic structural diagram of a spray module provided according to an embodiment of the present invention;

[0059] Figure 6 A flow chart of a control method provided according to an embodiment of the present invention is shown.

[0060] The above drawings include the following reference numerals:

[0061] 1. Oil fume extraction module;

[0062] 11. oil fume suction fan; 111. first volute; 112. oil fume suction impeller; 113. first volute tongue; 114. first connecting port; 115. volute ring wall;

[0063] 12. Upper box;

[0064] 13. Lower box; 131. Oil fume inlet;

[0065] 2. Compressor;

[0066] 3. Heat dissipation module;

[0067] 31. heat dissipation fan; 311. first heat dissipation outlet; 312. second heat dissipation outlet;

[0068] 32. Condenser;

[0069] 33. Second blocking member;

[0070] 4. Refrigeration module;

[0071] 41. Indoor fan;

[0072] 42. Evaporator;

[0073] 43. Refrigeration outlet;

[0074] 44. Water collection box;

[0075] 45. Air guide channel;

[0076] 5. Spray module; 51. Vaporization mixing channel; 52. Nozzle; 53. Water pump;

[0077] 6. Refrigerant pipeline;

[0078] 7. Oil cup;

[0079] 60. Air inlet duct. DETAILED DESCRIPTION

[0080] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0081] like Figures 1 to 5 As shown, an embodiment of the present invention provides a range hood, which includes: a range hood extraction module 1, a refrigeration module 4, a heat dissipation module 3 and a spray module 5. The range hood extraction module 1 includes a range hood extraction fan 11, and the range hood extraction fan 11 includes a range hood extraction shell group and a range hood extraction impeller 112. The range hood extraction impeller 112 is installed in the range hood extraction chamber surrounded by the range hood extraction shell group. The refrigeration module 4 includes an evaporator 42 and a water receiving box, and the water receiving box is arranged below the evaporator 42 to collect condensed water flowing down through the evaporator 42; the heat dissipation module 3 includes a condenser 32 and a heat dissipation fan 31, and the condenser 32 is connected to the evaporator 42, and the heat dissipation fan 31 is arranged on the side of the condenser 32. The spray module 5 includes a vaporization mixing channel 51 and a nozzle 52 that are connected to each other. The vaporization mixing channel 51 is used to communicate with the water receiving box, and the nozzle 52 is connected with the range hood extraction chamber. The air outlet of the heat dissipation fan 31 may be selectively connected to the oil fume suction chamber and / or the vaporization mixing channel 51 .

[0082] By using the range hood provided by this embodiment, by connecting the air outlet of the heat dissipation fan 31 with the oil smoke suction chamber, the hot air of the heat dissipation fan 31 can be sucked away and discharged through the oil smoke suction chamber, specifically, it can be discharged to the outside to prevent the high-temperature hot air from affecting the indoor temperature; by connecting the heat dissipation fan 31 with the vaporization mixing channel 51, it is convenient to effectively utilize the high temperature of the heat dissipation fan 31 to vaporize the water in the water receiving box at high temperature, and spray the steam into the oil smoke suction chamber through the nozzle 52, so that the oil smoke suction chamber and the oil smoke suction impeller 112 located in the oil smoke suction chamber are cleaned by the high-temperature steam, so as to effectively clean the oil smoke suction impeller 112 while taking away the oil smoke. The above structure can effectively utilize the heat of the condenser 32.

[0083] Specifically, what is sprayed out through the nozzle 52 may be high-temperature water mist, and when the temperature reaches a certain temperature, it may also be understood as high-temperature water vapor.

[0084] Specifically, the heat dissipation fan 31 has a first heat dissipation outlet 311 and a second heat dissipation outlet 312 which are arranged at intervals, and the first heat dissipation outlet 311 is arranged toward the vaporization mixing channel 51 .

[0085] Specifically, the heat dissipation fan 31 includes a second volute and a second volute tongue, and the first heat dissipation outlet 311 and the second heat dissipation outlet 312 are both arranged on the second volute.

[0086] Specifically, the first heat dissipation outlet 311 can be selectively connected or disconnected with the vaporization mixing channel 51. In this way, the structure is simple, the switching stability of connecting or disconnecting with the vaporization mixing channel is convenient, and confusion of the fluids in the first heat dissipation outlet 311 and the second heat dissipation outlet 312 is avoided.

[0087] Specifically, the second heat dissipation outlet 312 can be selectively connected or disconnected with the oil smoke suction chamber. In this way, the structure is simple, the switching stability of connecting or disconnecting with the oil smoke suction chamber is convenient, and the fluid of the first heat dissipation outlet 311 and the second heat dissipation outlet 312 is avoided from being confused.

[0088] In this embodiment, the heat dissipation fan 31 includes a heat dissipation shell group, and the heat dissipation shell group is provided with a first heat dissipation outlet 311 and a second heat dissipation outlet 312 .

[0089] Specifically, the heat dissipation fan 31 further includes a first blocking member, which is movably disposed at the first heat dissipation outlet 311 to block or avoid the first heat dissipation outlet 311, so as to more stably switch the connection and disconnection of the first heat dissipation outlet 311.

[0090] Specifically, the heat dissipation fan 31 further includes a second blocking member 33, which is movably disposed at the second heat dissipation outlet 312 to block or avoid the second heat dissipation outlet 312. In this way, the connection and disconnection of the second heat dissipation outlet can be switched more stably.

[0091] In this embodiment, the oil fume housing assembly is provided with a first communication port 114 and a second communication port at intervals, and both the first communication port 114 and the second communication port are connected to the oil fume suction chamber.

[0092] Specifically, the nozzle 52 is disposed toward the first communication port 114 or extends into the first communication port 114 , so that water vapor can smoothly enter the oil fume chamber, thereby facilitating cleaning of the oil fume chamber and components in the oil fume chamber.

[0093] Specifically, the second heat dissipation outlet 312 can be selectively connected or disconnected with the second connecting port, which can facilitate the correspondence between the ports and avoid confusion of water vapor and airflow, so as to better direct the hot air through the second heat dissipation outlet 312 to the second connecting port or disconnect from the second connecting port.

[0094] In this embodiment, the first heat dissipation outlet 311 has an inlet end and an outlet end that are arranged opposite to each other, and the outlet end is located on a side of the inlet end close to the vaporization mixing channel 51; along the extension direction from the inlet end to the outlet end, the flow cross section of the first heat dissipation outlet 311 gradually decreases. In this way, the flow velocity of the airflow can be better increased, the airflow can be better pressurized, and water vapor can be formed more effectively. Specifically, the water vapor in this embodiment can be high-temperature and high-pressure water vapor.

[0095] Specifically, the first connecting port 114 is located at the upper part of the oil fume shell group, so that water vapor can better flush the oil fume suction chamber and the oil fume suction impeller 112 under the action of gravity, so as to improve the cleaning effect of the oil fume suction chamber and the oil fume suction impeller 112.

[0096] In this embodiment, the oil fume suction housing group includes a first volute 111 and a first volute tongue 113. The first volute 111 and the first volute tongue 113 form an oil fume exhaust port connected to the oil fume suction chamber. The first volute 111 is provided with a first connecting port 114 and a second connecting port. In this way, the structure is simple, and hot air and water vapor are conveniently sucked into the oil fume suction chamber through the first connecting port 114 and the second connecting port.

[0097] Specifically, the oil smoke suction impeller 112 is a first centrifugal fan blade, the heat dissipation fan 31 includes a second centrifugal fan blade, and the central axis of the first centrifugal fan blade is arranged in parallel with the central axis of the second centrifugal fan blade. In this way, it is convenient to optimize the structural layout and also convenient to better suck the hot air in the heat dissipation fan 31 into the oil smoke suction chamber.

[0098] The heat dissipation fan 31 is arranged above the range fumes suction fan 11, so that the structural layout can be optimized. In addition, it is also convenient for the water vapor formed by the hot air of the heat dissipation fan 31 to fully clean the inside of the range fumes suction fan 11 under the action of gravity.

[0099] Specifically, the spray module 5 further includes a pressurizing member having a pressurizing channel, which is connected to the vaporization mixing channel 51. In this way, the hot air of the heat dissipation fan 31 is fully utilized to heat the water and pressurize the water at the same time, so as to fully form water vapor, thereby facilitating an effective cleaning effect.

[0100] Specifically, the spray module 5 further includes a temperature detection member, which is disposed at the nozzle 52 and is used to detect the temperature at the nozzle 52. In this way, it is easy to determine whether the sprayed water mist meets the predetermined high temperature, and further to determine whether the high temperature cleaning effect can be achieved.

[0101] Specifically, the spray module 5 further includes a water pump 53, the water inlet of the water pump 53 is communicated with the water receiving box, and the water outlet of the water pump 53 is communicated with the vaporization mixing channel 51. In this way, the water pumping operation can be smoothly performed.

[0102] In this embodiment, the range hood further comprises a water level detection member, which is arranged in the water receiving box so as to detect the water level height in the water receiving box.

[0103] Specifically, the evaporator 42 and the condenser 32 are arranged at intervals to form an air inlet channel 60, the heat dissipation fan 31 is arranged on the side of the condenser 32 away from the evaporator 42, and the heat dissipation fan 31 drives the airflow in the air inlet channel to enter the heat dissipation fan 31 through the condenser 32; the refrigeration module 4 also includes an internal fan, which is arranged on the side of the evaporator 42 away from the condenser 32, and the internal fan drives the airflow in the air inlet channel to enter the internal fan through the evaporator 42. In this way, in order to optimize the structural layout, it is convenient to realize the heat exchange of the evaporator 42 and the condenser 32 on both sides through one air inlet channel 60, thereby improving the compactness of the internal structural layout.

[0104] In this embodiment, the range hood further comprises an upper box 12 and a lower box 13, and the fume extraction module 1, the refrigeration module 4, the heat dissipation module 3 and the spray module 5 are all installed in the upper box 12. The lower box 13 is arranged at the bottom of the upper box 12, and a refrigeration outlet 43 communicating with the refrigeration cavity of the refrigeration module 4 and an oil fume inlet 131 communicating with the oil fume extraction cavity of the fume extraction module 1 are arranged at intervals on the lower box 13. In this way, it is convenient to optimize the structural layout and to realize the simultaneous refrigeration and fume extraction.

[0105] Specifically, the oil fume inlet 131 is located on a side of the lower box body 13 away from the upper box body 12, so as to improve the effect of extracting oil fume.

[0106] Specifically, the refrigeration outlet 43 is located at the side of the lower box body 13 to facilitate the discharge of cold air and prevent the cold air from mixing with oil smoke.

[0107] The range hood further comprises an oil cup 7, which is arranged below the oil fume inlet 131 so as to absorb the deposited oil.

[0108] like Figure 1 As shown, the refrigeration type range hood of this embodiment includes a range hood module 1, a compressor 2, a heat dissipation module 3, a refrigeration module 4 and a spray module 5. The range hood module 1 includes a range hood fan 11, an upper box 12 and a lower box 13. The range hood fan 11 is installed inside the upper box 12, and the lower box 13 is installed at the bottom of the upper box 12. The lower box 13 is provided with a smoke inlet connected to the air inlet of the range hood fan 11. The range hood fan 11 is a centrifugal fan, and includes a first volute 111, a range hood impeller 112 and a first volute tongue 113. The first volute tongue 113 is installed on the volute ring wall 115 and close to the fan outlet. The volute ring wall is provided with a first connecting port 114, which allows the water spray hole of the spray module to spray out from the opening provided on the volute ring wall. The compressor 2 is installed above the lower box body 13 and is located on the right side of the upper box body 12. The refrigeration module 4 is arranged above the compressor 2. The heat dissipation module 3 is arranged at the top of the upper box body 12. The heat dissipation module 3 and the refrigeration module 4 are arranged adjacent to each other, and the heat dissipation module 3 and the refrigeration module 4 share an air inlet. The heat dissipation module 3 includes a condenser 32, a heat dissipation fan 31 and a second blocking member 33. The refrigeration module 4 includes an indoor fan 41, an evaporator 42, a refrigeration outlet 43 and a water receiving box 44. The compressor 2, the condenser 32 and the evaporator 42 are connected through a refrigerant pipeline 6. The spray module 5 includes a vaporization mixing channel 51, a nozzle 52 and a water pump 53. The water pump 53 is located at the water outlet of the water receiving box 44 to extract the condensed water collected in the water receiving box and pressurize it into the vaporization mixing channel 51. The compressor 2, the condenser 32 and the evaporator 42 constitute an air conditioning component, and its specific working principle is the same as that of the existing air conditioner, such as Figure 4 A cooling outlet 43 is provided at the upper part of the lower box 13, and an oil cup 7 is provided at the lower part. The air outlet of the internal fan 41 is fluidly connected to the cooling outlet 43 through an air guide channel 45. When working in the cooling mode, cold air is blown out from the cooling outlet 43, which improves the user's cooking experience. Figure 3 shown.

[0109] The heat dissipation fan 31 of this embodiment is a centrifugal fan, and the impeller center axis of the heat dissipation fan 31 is parallel to the impeller center axis of the range fumes fan 11. A first connecting port 114 is formed on the volute ring wall 115 of the range fumes fan 11, and the heat dissipation fan 31 is arranged above the range fumes fan 11.

[0110] The second heat dissipation outlet 312 of the heat dissipation fan 31 uses the second blocking piece 33 to guide the hot air to the air inlet of the volute of the range fumes exhaust fan 11, and the hot air is sucked in through the second connecting port of the volute of the range fumes exhaust fan 11; the above is one of the channels for hot air discharge: the hot air is guided to the air inlet of the volute of the range fumes exhaust fan, and the hot air is sucked in by the negative pressure generated by the range fumes exhaust fan, and is discharged to the outside together with the oil fume gas through the smoke exhaust duct.

[0111] A water receiving box 44 is arranged below the evaporator 42, and water droplets condensed on the evaporator drip into the water receiving box 44 for collection. The water receiving box 44 is connected to the spray module 5, and the nozzle arranged at the front end of the spray module 5 is connected to the first connecting port 114 opened on the volute ring wall 115, wherein a plurality of spray holes arranged in a certain pattern are arranged on the nozzle.

[0112] Specifically, another channel of the hot air blown out by the heat dissipation fan 31 leads to the spray module 5 under the guidance of the second blocking member 33. The detailed structure diagram is as follows: Figure 5 As shown, the first heat dissipation outlet 311 is gradually reduced from the air inlet to the air outlet, in order to pressurize the high-temperature gas. After the hot air reaches the vaporization mixing channel 51 through the air outlet of the first heat dissipation outlet 311 with a smaller cross-sectional area, the air pressure increases sharply, forming high-temperature and high-pressure gas; a water pump 53 is installed at the water outlet of the water receiving box 44 to pressurize the condensed water collected in the water receiving box 44 and transport it to the vaporization mixing channel 51, where it is fully mixed with the high-temperature gas to form high-temperature water vapor, and then sprayed from the nozzle 52 of the spray module 5 connected to the vaporization mixing channel 51 through the first connecting port 114 opened on the volute ring wall, and the condensed water is discharged into the inner cavity of the range hood fan in the form of steam, and discharged to the outside through the exhaust duct together with the oil fume gas.

[0113] Specifically, the second blocking member 33 may be a wind valve. Specifically, the first volute 111 includes a volute annular wall 115 .

[0114] The second embodiment of the present invention provides a control method, which is applicable to the range hood provided above, and the control method includes: obtaining the water level in the water receiving box of the range hood; and controlling the air outlet of the heat dissipation fan of the range hood to selectively connect or disconnect with the vaporization mixing channel of the range hood according to the water level in the water receiving box. In this way, the components in the oil suction shell assembly can be effectively cleaned, and the heat of the heat dissipation fan can be effectively utilized to avoid heat loss.

[0115] In this embodiment, the air outlet of the heat dissipation fan of the range hood is controlled to be selectively connected or disconnected with the vaporization mixing channel of the range hood according to the water level in the water receiving box, including: when the water level in the water receiving box is greater than the first water level H1, the air outlet of the heat dissipation fan is controlled to be connected with the vaporization mixing channel; when the water level in the water receiving box is less than or equal to the first water level H1, the air outlet of the heat dissipation fan is controlled to be disconnected from the vaporization mixing channel. In this way, it is easy to ensure that there is a sufficient water source, so as to ensure the formation of sufficient high-temperature water mist or even high-temperature steam.

[0116] Specifically, when the water level in the water receiving box is greater than the first water level H1, the control method further includes: determining whether the water level in the water receiving box is greater than the second water level H2; when the water level in the water receiving box is greater than the second water level H2, increasing the water delivery speed to the vaporization mixing channel; when the water level in the water receiving box is less than or equal to the second water level H2, keeping the water delivery speed of the vaporization mixing channel unchanged or reducing it. In this way, the situation that the water level in the water receiving box is too high and overflows can be avoided, so that the water in the water receiving box can be effectively used.

[0117] In this embodiment, when the air outlet of the heat dissipation fan is connected to the vaporization mixing channel, the control method further includes: obtaining the temperature of the water vapor at the nozzle of the range hood; and controlling the speed of the heat dissipation fan according to the temperature of the water vapor at the nozzle. In this way, it is possible to effectively ensure that the temperature of the water vapor can effectively meet the cleaning effect of the range hood chamber and the components in the range hood chamber.

[0118] Specifically, the speed of the heat dissipation fan is controlled according to the temperature of the water vapor at the nozzle, including: when the temperature of the water vapor at the nozzle is greater than a preset temperature, the speed of the heat dissipation fan is controlled to remain unchanged or to decrease; when the temperature of the water vapor at the nozzle is less than or equal to the preset temperature, the speed of the heat dissipation fan is controlled to increase. In this way, it is convenient to fully ensure that the water vapor has a sufficiently high temperature, so as to ensure the cleaning effect of the oil fume suction chamber and the components in the oil fume suction chamber.

[0119] like Figure 6 As shown in the figure, during the cooling mode, the condenser heat and condensed water are discharged synchronously, which is described in detail as follows:

[0120] In the cooling mode, the hot air passage to the spray module 5 and the passage leading to the smoke inlet of the range hood are both open. Figure 1As shown; when the two devices (evaporator and condenser) are in operation, the heat generated by the condenser 32 is directed to the air inlet of the fume suction fan 11 under the operation of the heat dissipation fan 31, and the hot air is sucked in by the negative pressure generated by the fume suction fan 11, and is discharged to the outside through the exhaust duct together with the fume gas. The above process also corresponds to the connection between the condensation air outlet and the fan air inlet; the judgment condition of the other hot air guide spray module 5 (also corresponding to the connection between the condensation air outlet and the air inlet of the spray device) is that the water level value of the condensed water in the water receiving box 44 (the water receiving box can also be called a water collecting box) reaches the threshold value H1. Because when the water level in the water receiving box 44 reaches a certain value, the water pump 53 starts to pressurize and transport the condensed water. When the amount of condensed water is small, the water pump 53 may not be able to pump the water, wasting resources. Source, when the condensed water accumulates to a certain amount, the hot air is conducted to the spray module 5. After the hot air reaches the vaporization mixing channel 51 through the air outlet end of the first heat dissipation outlet 311 with a smaller cross-sectional area, the air pressure increases sharply to form high-temperature and high-pressure gas, which is fully mixed with the condensed water pressurized by the water pump in the vaporization mixing channel to form bubble water or atomized water vapor, which is sprayed from the nozzle 52 of the spray module 5 to the opening opened on the volute ring wall 115, and is discharged to the outdoors through the smoke exhaust channel together with the oil fume gas, thereby effectively treating the condensed water generated on the evaporator 42; through the two-way channel, not only the heat of the condenser is discharged by using the existing front and rear air inlets of the range hood volute, but the condensed water is also treated simultaneously, and the two problems of condenser heat and condensed water generated by the range hood combined with the refrigeration function are solved at the same time.

[0121] In the cleaning mode, that is, when the inner cavity of the volute of the whole machine needs to be cleaned of oil, the weight of the inner cavity of the volute can be detected or the usage time of the range hood can be counted; the channel of hot air to the spray module 5 is connected, and the channel of the second connecting port of the first volute of the range hood fan 11 (the first volute can also be called the range hood volute) is closed. Figure 2 As shown, the condensing fan (condensing fan is also called heat dissipation fan), evaporating fan (evaporating fan can also be called indoor fan) and range hood fan (range hood fan can also be called range hood fan) are all running. After the hot air reaches the vaporization mixing channel 51 through the air outlet with a smaller cross-sectional area, the air pressure increases sharply to form high-temperature and high-pressure gas, which is fully mixed with the condensed water pressurized by the water pump in the vaporization mixing channel to form bubble water or atomized water vapor, which is sprayed from the nozzle of the spray module to the opening opened on the volute ring wall, and sprayed to the inner wall of the first volute and the oil-absorbing tobacco leaves. The wheel 112 is sprayed, and the nozzle can rotate 360 ​​degrees to ensure that the wind wheel blades of the first volute and the range hood impeller 112 are sprayed with water vapor. After spraying for a certain period of time or when the water in the water receiving box is reduced to below H1, the spraying action is stopped. The water sprayed by the above-mentioned spraying method has a certain temperature, which can effectively and deeply clean the oil stains in the inner cavity of the range hood fan, and realize the technical effect of full utilization of hot air; at the same time, the condensed water in the water receiving box is processed, and the technical effect of no risk of overflow of the condensed water in the water receiving box is realized.

[0122] In order to deeply clean the inner cavity of the range hood, the control logic can be adopted as follows:

[0123] A temperature sensor is fixedly attached to the nozzle to detect the temperature of the water vapor flowing through. If the water vapor temperature is lower than 70°C, the speed of the cooling fan is controlled to be reduced, so that the temperature of the hot air blown into the vaporization mixing channel is increased, and the temperature of the water vapor blown out can reach the temperature of melting the oil stains, so as to achieve the technical effect of deeply cleaning the oil stains on the inner wall of the first volute and the wind wheel blades of the oil smoke suction impeller 112; if the water vapor temperature exceeds 70°C, the speed of the cooling fan is controlled to remain unchanged. When the cleaning mode is turned on, the impeller of the oil smoke fan rotates synchronously during the opening process of the spray module, and the nozzle of the spray module sprays the inner wall of the first volute and the wind wheel blades of the oil smoke suction impeller 112 in all directions. When the water in the water receiving box drops below H1, the spraying action is stopped.

[0124] During the operation of the cooling mode, when the amount of condensed water reaches H1, the condensed water begins to be processed. In actual use, when the water volume has not reached H1 after the cooling mode ends, this part of the condensed water does not need to be processed; the next time the cooling mode starts, the condensed water begins to accumulate. When the condensed water exceeds H1, high-speed hot air is used to blow the condensed water for processing. If the rate at which condensed water is generated is greater than the rate at which condensed water is consumed by hot air, the amount of condensed water in the water receiving box will increase and the water level will rise. To prevent the water in the water receiving box from spilling, when the water level rises to H2, the speed at which the water pump delivers condensed water is increased. The water pump has different delivery efficiencies when the water levels reach H1 and H2. The water level reaching H1 is a criterion for judging whether the hot air and vaporization mixing channels are connected. When the rate at which condensed water is generated is greater than the rate at which condensed water is consumed by hot air, causing the condensed water level to rise, if the water level is higher than H1 and lower than H2 after the cooling mode ends, the water in the water receiving box will not have a risk of spilling. However, to prevent excessive accumulation of condensed water next time the cooling mode is running, after the cooling mode ends, the whole machine is controlled to automatically start the cleaning mode without waiting for the cleaning mode start signal, so that the condensed water is reduced to below H1 by spraying.

[0125] From the above description, it can be seen that the above-mentioned embodiment of the present invention achieves the following technical effects: the hot air from the condenser is divided into two channels, one channel guides the hot air to the air inlet of the hood volute, the hot air is sucked in by the negative pressure generated by the hood fan, and is discharged to the outside through the exhaust duct together with the oil fume gas; the other channel is connected to the spray module, and the air inlet to the air outlet of the channel is changed from large to small, the purpose is to pressurize the high-temperature gas; a water pump is installed at the water outlet of the water receiving box, and the condensed water collected in the water receiving box is pressurized and transported to the vaporization mixing channel, and is fully mixed with the high-temperature gas in the vaporization mixing channel to form high-temperature water vapor, which is sprayed from the nozzle of the spray module connected to the vaporization mixing channel through the opening opened on the volute ring wall, and the condensed water is discharged into the inner cavity of the range hood fan in the form of steam, and is discharged to the outside through the exhaust duct together with the oil fume gas; in the cleaning mode, the condensed water vapor formed by the mixture has a certain temperature, and is sprayed from the opening opened on the volute ring wall to spray and clean the inner wall of the volute and the wind wheel blades, thereby achieving the technical effect of full utilization of hot air. The hot air can be fully utilized, not only to discharge the hot air, but also to mix the hot air with the pressurized condensed water generated on the evaporator to form high-temperature water vapor for consumption and treatment. At the same time, the high-temperature water vapor can be used to deeply clean the inner cavity of the range hood volute.

[0126] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0127] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0128] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0129] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0130] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0131] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A range hood, characterized in that: include: An oil fume suction module (1), the oil fume suction module (1) comprising an oil fume suction fan (11), the oil fume suction fan (11) comprising an oil fume suction shell group and an oil fume suction impeller (112), the oil fume suction impeller (112) being installed in an oil fume suction chamber surrounded by the oil fume suction shell group; A refrigeration module (4) and a heat dissipation module (3), wherein the refrigeration module (4) comprises an evaporator (42) and a water receiving box (44), wherein the water receiving box (44) is arranged below the evaporator (42) to collect condensed water flowing down through the evaporator (42); the heat dissipation module (3) comprises a condenser (32) and a heat dissipation fan (31), wherein the condenser (32) is arranged in communication with the evaporator (42), and the heat dissipation fan (31) is arranged on the side of the condenser (32); A spray module (5), the spray module (5) comprising a vaporization mixing channel (51) and a nozzle (52) which are in communication with each other, the vaporization mixing channel (51) being used to communicate with the water receiving box (44), and the nozzle (52) being in communication with the oil fume suction chamber; Wherein, the air outlet of the heat dissipation fan (31) can be selectively connected to the oil fume suction chamber and / or the vaporization mixing channel (51).

2. The range hood according to claim 1, characterized in that: The heat dissipation fan (31) has a first heat dissipation outlet (311) and a second heat dissipation outlet (312) which are arranged at intervals, and the first heat dissipation outlet (311) is arranged toward the vaporization mixing channel (51); Wherein, the first heat dissipation outlet (311) can be selectively connected to or disconnected from the vaporization mixing channel (51); and / or, The second heat dissipation outlet (312) can be selectively connected to or disconnected from the oil fume suction chamber.

3. The range hood according to claim 2, characterized in that: The heat dissipation fan (31) comprises a heat dissipation shell group, and the heat dissipation shell group is provided with the first heat dissipation outlet (311) and the second heat dissipation outlet (312); The heat dissipation fan (31) further comprises: a first blocking member, movably disposed at the first heat dissipation outlet (311) to block or avoid the first heat dissipation outlet (311); and / or, The second blocking member (33) is movably arranged at the second heat dissipation outlet (312) to block or avoid the second heat dissipation outlet (312).

4. The range hood according to claim 2, characterized in that: The oil fume shell group is provided with a first communication port (114) and a second communication port at intervals, and the first communication port (114) and the second communication port are both connected to the oil fume suction chamber; Wherein, the nozzle (52) is arranged toward the first communication opening (114) or extends into the first communication opening (114); and / or, The second heat dissipation outlet (312) can be selectively connected to or disconnected from the second communication port.

5. The range hood according to claim 4, characterized in that: The first heat dissipation outlet (311) has an inlet end and an outlet end that are arranged opposite to each other, and the outlet end is located on a side of the inlet end close to the vaporization mixing channel (51); Along the extension direction from the inlet end to the outlet end, the flow cross section of the first heat dissipation outlet (311) gradually decreases; and / or, The first communication port (114) is located at the upper part of the oil fume housing assembly.

6. The range hood according to claim 4, characterized in that: The oil fume suction housing assembly comprises a first volute (111) and a first volute tongue (113), the first volute (111) and the first volute tongue (113) enclose an oil fume exhaust port connected to the oil fume suction chamber, the first volute (111) is provided with the first connecting port (114) and the second connecting port; and / or, The oil smoke suction impeller (112) is a first centrifugal fan blade, the heat dissipation fan (31) includes a second centrifugal fan blade, and the central axis of the first centrifugal fan blade and the central axis of the second centrifugal fan blade are arranged in parallel; and / or, The heat dissipation fan (31) is arranged above the range fumes suction fan (11).

7. The range hood according to claim 1, characterized in that: The spray module (5) further comprises: a pressurizing member, the pressurizing member having a pressurizing channel, the pressurizing channel being in communication with the vaporization mixing channel (51); and / or, a temperature detection element, arranged at the nozzle (52), the temperature detection element being used to detect the temperature at the nozzle (52); and / or, A water pump (53), wherein a water inlet of the water pump (53) is in communication with the water receiving box (44), and a water outlet of the water pump (53) is in communication with the vaporization mixing channel (51).

8. The range hood according to claim 1, characterized in that: The range hood further comprises a water level detection component, wherein the water level detection component is arranged in the water receiving box (44); and / or, The evaporator (42) and the condenser (32) are spaced apart and form an air inlet channel (60); the heat dissipation fan (31) is arranged on a side of the condenser (32) away from the evaporator (42); the heat dissipation fan (31) drives the airflow in the air inlet channel (60) to pass through the condenser (32) and enter the heat dissipation fan (31); the refrigeration module (4) also includes an indoor fan, which is arranged on a side of the evaporator (42) away from the condenser (32); the indoor fan drives the airflow in the air inlet channel (60) to pass through the evaporator (42) and enter the indoor fan.

9. The range hood according to claim 1, characterized in that: The range hood further comprises: An upper box body (12), wherein the oil fume suction module (1), the refrigeration module (4), the heat dissipation module (3) and the spray module (5) are all installed in the upper box body (12); The lower box body (13) is arranged at the bottom of the upper box body (12), and a refrigeration outlet (43) connected to the refrigeration cavity of the refrigeration module (4) and an oil fume inlet (131) used to communicate with the oil fume suction cavity of the oil fume suction module (1) are arranged on the lower box body (13).

10. The range hood according to claim 9, characterized in that: The oil fume inlet (131) is located on a side of the lower box (13) away from the upper box (12); and / or, The refrigeration outlet (43) is located at the side of the lower box (13); and / or, The range hood further comprises an oil cup (7), and the oil cup (7) is arranged below the oil fume inlet (131).

11. A control method, characterized in that: Applicable to the range hood according to any one of claims 1 to 10, the control method comprises: Obtaining the water level in the water receiving box of the range hood; The air outlet of the heat dissipation fan of the range hood is controlled according to the water level in the water receiving box to selectively connect or disconnect with the vaporization mixing channel of the range hood.

12. The control method according to claim 11, characterized in that: The method of controlling the air outlet of the heat dissipation fan of the range hood to selectively connect or disconnect with the vaporization mixing channel of the range hood according to the water level in the water receiving box comprises: When the water level in the water receiving box is greater than the first water level H1, the air outlet of the heat dissipation fan is controlled to communicate with the vaporization mixing channel; When the water level in the water receiving box is less than or equal to the first water level H1, the air outlet of the heat dissipation fan is controlled to be disconnected from the vaporization mixing channel.

13. The control method according to claim 12, characterized in that: When the water level in the water receiving box is greater than the first water level H1, the control method further includes: Determine whether the water level in the water receiving box is greater than the second water level H2; When the water level in the water receiving box is greater than the second water level H2, increasing the speed of conveying water to the vaporization mixing channel; When the water level in the water receiving box is less than or equal to the second water level H2, the water conveying speed of the vaporization mixing channel is kept unchanged or reduced.

14. The control method according to claim 11, characterized in that: In the case where the air outlet of the heat dissipation fan is in communication with the vaporization mixing channel, the control method further includes: obtaining the temperature of the water vapor at the nozzle of the range hood; The rotation speed of the heat dissipation fan is controlled according to the temperature of the water vapor at the nozzle.

15. The control method according to claim 14, characterized in that: The controlling the rotation speed of the heat dissipation fan according to the temperature of the water vapor at the nozzle comprises: When the temperature of the water vapor at the nozzle is greater than a preset temperature, controlling the speed of the heat dissipation fan to remain unchanged or to decrease; When the temperature of the water vapor at the nozzle is less than or equal to a preset temperature, the rotation speed of the heat dissipation fan is controlled to increase.

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