Self-cleaning oil smoke extraction integrated air conditioner window machine for kitchen and using method thereof

Abstract

The invention discloses a self-cleaning and oil fume extraction integrated air conditioner window machine for a kitchen and a using method thereof, and belongs to the field of window type air conditioners. The window machine comprises an oil fume extraction system, an air conditioning system and a water tank, the oil fume extraction system comprises an oil fume extraction opening, a wind wheel cavity and an exhaust section, and the water tank is connected with a spraying pipe spraying towards the interior of the wind wheel cavity; and the compressor is communicated to the expansion valve through two parallel pipelines, one pipeline is a condenser, and the other pipeline is a heat pipe exchanging heat with the dividing wall of the water tank. The window machine is a smoke exhaust ventilator and a window type air conditioner, the smoke exhaust system has a self-cleaning function, heat generated during operation of the air conditioning system is utilized, hot water can be used for easily spraying and cleaning an internal wind wheel cavity used for exhausting smoke without disassembling the window machine, and the air conditioning system sucks external fresh air from an outdoor fresh air opening, penetrates through an evaporator and blows the fresh air into a room from an air supply opening. The possibility that the evaporator accumulates oil smoke is greatly reduced, and oil smoke smell is avoided when air supplied by a kitchen air conditioner.

Description

TECHNICAL FIELD

[0001] The present application relates to a self-cleaning integrated range hood air conditioner window machine for kitchen and its use method, belonging to the field of window air conditioners. BACKGROUND

[0002] When cooking in the kitchen, oil fume will be generated, so the kitchen door is usually closed to avoid the oil fume from escaping to the living room, and the range hood is turned on to extract the oil fume from the kitchen and discharge it to the outside. The range hood in the prior art usually only has external components such as an oil guide plate, a smoke collecting cover, and a filter screen that can be easily cleaned by the user. The impeller used for air extraction is an internal component, but it will also come into contact with oil fume, and the general user will not disassemble and clean it. The surface of the impeller will gradually accumulate thick oil stains, forming a sticky oil dirt layer. The oil stains increase the resistance of the impeller rotation, block the gaps and vents of the impeller, cause poor air circulation, and weaken the exhaust capacity of the range hood, prolonging the residence time of the oil fume in the kitchen. The increased resistance of the impeller will force the motor to consume more power to maintain operation, causing the motor to be in a high load state for a long time, shortening the service life of the range hood.

[0003] In addition to generating oil fume, cooking also causes the temperature in the kitchen to rise due to the heating required for cooking. Because the kitchen door is usually closed during cooking, the kitchen cannot enjoy the air conditioning of the living room. Using a central air conditioner is a good solution to provide cooling for the kitchen, but central air conditioners are expensive, and small households generally do not use central air conditioners. If you do not want to install a central air conditioner, it is very difficult to install an air conditioner in the kitchen later.

[0004] One of the difficulties of installing an air conditioner in the kitchen is oil fume. The range hood has a device to collect oil stains, while most wall-mounted air conditioners and mobile air conditioners do not have a device to collect oil stains, and the return air inlet continuously sucks in oil fume. The hottest place in the kitchen is the standing space in front of the gas stove, and the air conditioner air outlet should quickly blow cold air to the standing space in front of the gas stove. The return air inlet continuously sucks in oil fume and blows it back to the location where people stand. When the evaporator accumulates oil stains, even if the air conditioner is turned on without cooking, the smell of oil fume can still be smelled in the kitchen. SUMMARY

[0005] In order to overcome the shortcomings of the prior art, the present application provides a self-cleaning integrated range hood air conditioner window machine for kitchen, which has the functions of a range hood and an air conditioner, occupies a small space, can self-clean the impeller installed inside, and provides a use method.

[0006] The technical scheme adopted by the present application to solve its technical problems is:

[0007] In the first aspect, the present application provides a self-cleaning, integrated range hood extraction window air conditioner for the kitchen, comprising a range hood extraction system, an air conditioning system and a water tank, wherein the range hood extraction system comprises a range hood extraction port, a wind wheel cavity and an exhaust section in sequence according to the wind direction, and the water tank is connected to a spray pipe spraying into the interior of the wind wheel cavity, and the air conditioning system comprises an expansion valve, an air supply port, a compressor, a fresh air port, a condenser located at the exhaust section and an evaporator located at the air supply port, the range hood extraction port and the air supply port are located indoors, and the fresh air port and the exhaust section are located outdoors, and the compressor is connected to the expansion valve via two parallel pipelines, one being the condenser and the other being a heat pipe for heat exchange with the wall of the water tank.

[0008] The self-cleaning range hood integrated air-conditioning window unit for the kitchen provided by the present application is small in size and does not require the installation of outdoor and indoor units separately. It is particularly suitable for small apartments. The air-conditioning system draws in outside air from the outdoor fresh air inlet, passes through the evaporator and blows it into the indoor air from the air supply outlet, avoiding the use of air in the kitchen as return air. At the same time, the indoor oil smoke reaches the evaporator in a counterwind movement, so the evaporator rarely comes into contact with oil stains, greatly reducing the chance of oil stains accumulating on the evaporator; the oil smoke airflow in the range hood system can also be used as an airflow to cool the condenser; during self-cleaning, the high-temperature gaseous refrigerant coming out of the compressor can be used to heat the water tank, and the water tank provides hot water for flushing the wind wheel cavity through the spray pipe, so the inside of the range hood system can be cleaned without disassembling the machine.

[0009] Furthermore, an inner machine cavity isolated from the wind wheel cavity is provided above the wind wheel cavity, a wind wheel is provided in the wind wheel cavity, a fan is provided in the inner machine cavity, the fresh air inlet is the air flow inlet of the inner machine cavity, and the air supply outlet is the air flow outlet of the inner machine cavity.

[0010] Furthermore, the self-cleaning range hood extraction integrated air-conditioning window unit for the kitchen further comprises a motor, the output end of the motor being connected to the wind wheel and the fan at the same time, so that one motor drives the wind wheel and the fan to rotate at the same time.

[0011] Furthermore, the range vent is arranged at the bottom of the wind wheel cavity, the center of the range vent is an upwardly protruding annular belt, the wind wheel includes a bottom ring, a top plate and wind wheel blades connected between the bottom ring and the top plate, the spray pipe includes a nozzle that penetrates the wind wheel cavity and is aligned with the top plate, a plurality of through holes are distributed on the top plate, the bottom end of the bottom ring is separated from the bottom of the wind wheel cavity, the bottom end of the bottom ring is lower than the top of the annular belt, and the vertical projection of the through hole is not within the range surrounded by the annular belt.

[0012] Furthermore, a water retaining ring is provided in the center of the top surface of the top plate, and the vertical projection of the nozzle is not within the range surrounded by the water retaining ring. The water retaining ring is used to prevent the spraying water from wetting the rotating shaft of the wind wheel.

[0013] Further, the inner machine cavity comprises a lower cavity and an upper cavity located above the lower cavity, the fresh air outlet is connected with the lower cavity, the air outlet is connected with the upper cavity, a duct is arranged between the upper cavity and the lower cavity, the fan is located in the duct, and the internal space of the upper cavity gradually increases from a position far away from the air outlet to a position close to the air outlet. Through tests, the structure has lower operation noise.

[0014] Further, a lifting section is connected between the wind wheel cavity and the exhaust section, the lifting section has a gradually increasing cross-sectional area and a gradually increasing bottom height from a position far away from the exhaust section to a position close to the exhaust section, and the width of the exhaust section at the position with the smallest cross-sectional area is smaller than the radius of the wind wheel cavity.

[0015] The radius of the wind wheel cavity is greater than the width of the exhaust section at the position with the smallest cross-sectional area, so that most of the temporarily accumulated oil droplets on the wind wheel hit the inner wall of the wind wheel cavity, and only a small part of the oil droplets can reach the lifting section. The bottom height of the lifting section gradually increases in the direction of the air flow, the bottom of the lifting section forms an upwardly inclined slope, and the small part of the oil droplets reaching the lifting section also hit the slope and flow back to the wind wheel cavity due to gravity. The cross-sectional area of the lifting section gradually increases in the direction of the air flow, which is conducive to the sedimentation of small liquid droplets in the flue gas to some extent, reduces the oil content in the flue gas, and is conducive to reducing the accumulation of oil stains on the condenser.

[0016] Further, the refrigerant pipeline of the evaporator leading to the compressor exchanges heat with the lifting section.

[0017] Further, the kitchen self-cleaning range hood integrated air conditioner window machine further comprises a shell, the shell is provided with a cold water inlet and a hot water outlet, a water inlet pipe is connected between the water tank and the cold water inlet, a three-way valve is connected between the water tank and the spray pipe, and a water outlet pipe is connected between the three-way valve and the hot water outlet; the bottom of the wind wheel cavity is connected with a sewage outlet, and the sewage outlet is connected with a sewage pipe penetrating out of the shell.

[0018] The sewage after cleaning the wind wheel cavity is discharged through the sewage pipe; and the water heated by the refrigerant in the water tank can be used not only for spraying the wind wheel cavity, but also discharged through the water outlet pipe to provide hot water for the kitchen.

[0019] In a second aspect, the application provides a use method of the kitchen self-cleaning range hood integrated air conditioner window machine according to the first aspect, which comprises an oil fume extraction and refrigeration mode and a self-cleaning and refrigeration mode.

[0020] In the oil fume extraction and refrigeration mode, the spray pipe is closed, and the refrigerant in the compressor passes through the condenser to the expansion valve;

[0021] In the self-cleaning and refrigeration mode, the spray pipe is opened, and the refrigerant in the compressor passes through the heat pipe to the expansion valve.

[0022] The beneficial effects of the present invention are: the present invention solves the difficult problem of installing air conditioners in small-sized kitchens, and integrates the air conditioner and the range hood into an all-in-one machine, which is both a range hood and a window air conditioner. The range hood extraction system has a self-cleaning function, and utilizes the heat generated during the operation of the air conditioning system. The internal wind wheel cavity used for extracting range hoods can be easily cleaned by spraying hot water without disassembling the machine. The air conditioning system inhales fresh air from the outdoor fresh air inlet, passes through the evaporator and blows it into the room from the air outlet, which greatly reduces the possibility of oil smoke accumulation in the evaporator and avoids the smell of oil smoke from the air supply of the kitchen air conditioner.

[0023] Other features and advantages of the present application will be described in the following description, and in part will become apparent from the description, or understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures particularly pointed out in the written description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the installation position of a self-cleaning, range hood-extracting, integrated air-conditioning window unit for the kitchen provided in an embodiment of the present application.

[0025] Figure 2 This is a working principle diagram of a self-cleaning range hood extraction integrated air-conditioning window unit for kitchen use provided in an embodiment of the present application.

[0026] Figure 3 This is a structural diagram of a self-cleaning range hood extraction integrated air-conditioning window unit for kitchen use provided in an embodiment of the present application, with the outer shell removed.

[0027] Figure 4 This is one of the internal structure diagrams of a self-cleaning range hood extraction integrated air-conditioning window unit for the kitchen provided in an embodiment of the present application.

[0028] Figure 5 This is the second internal structure diagram of a self-cleaning range hood extraction integrated air-conditioning window unit for the kitchen provided in an embodiment of the present application.

[0029] Figure 6 It is a structural diagram of the air conditioning system related pipelines, water tank related pipelines and wind wheel cavity.

[0030] Figure 7 This is the third internal structure diagram of a self-cleaning range hood integrated air-conditioning window unit for the kitchen provided in an embodiment of the present application.

[0031] Reference numerals: 1, wind wheel cavity; 11, range hood; 111, annular belt; 112, shielding portion; 12, exhaust section; 13, sewage outlet; 14, lifting section; 15, bottom ring; 16, top plate; 161, through hole; 162, water retaining ring; 17, wind wheel blade; 18, wind wheel; 21, expansion valve; 22, evaporator; 23, compressor; 24, condenser; 25, heat pipe; 26, First solenoid valve; 27. Second solenoid valve; 3. Water tank; 31. Water inlet pipe; 32. Sprinkler pipe; 33. Water outlet pipe; 34. Three-way valve; 41. Air supply port; 42. Fresh air port; 421. Check valve; 43. Fan; 44. Upper cavity; 45. Lower cavity; 46. Duct; 5. Motor; 6. Casing; 61. Cold water inlet; 62. Hot water outlet; 63. Drain pipe; 7. Partition. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and are not to be construed as limiting the present invention.

[0033] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, the components and configurations of specific examples are described below. Of course, these are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or configurations discussed.

[0034] Reference Figures 1 to 4 , an embodiment of the present application provides a self-cleaning range hood integrated air-conditioning window unit for the kitchen, including a range hood extraction system, an air-conditioning system and a water tank 3. The range hood extraction system includes a range hood extraction port 11, a wind wheel cavity 1 and an exhaust section 12 in order according to the wind direction. The water tank 3 is connected to a spray pipe 32 spraying into the wind wheel cavity 1. The air-conditioning system includes an expansion valve 21, an air supply port 41, a compressor 23, a fresh air port 42, a condenser 24 located at the exhaust section 12 and an evaporator 22 located at the air supply port 41. The range hood extraction port 11 and the air supply port 41 are located indoors, and the fresh air port 42 and the exhaust section 12 are located outdoors. The compressor 23 is connected to the expansion valve 21 via two parallel pipelines, one being the condenser 24 and the other being a heat pipe 25 for heat exchange with the wall of the water tank 3.

[0035] Those skilled in the art know that the wind wheel chamber 1 for extracting range fumes must have a wind wheel therein; as the air supply port 41 of the air-conditioning system, there must be a fan upstream of the evaporator 22 according to the air flow; the air-conditioning system must require a refrigerant, and the circulation path of the refrigerant is expansion valve 21-evaporator 22-compressor 23-condenser 24-expansion valve 21-evaporator 22-... It should be noted that a smoke hood can be provided around the range fumes outlet 11, an oil guide plate can be provided below the range fumes outlet 11, and a filter can be provided inside the range fumes outlet 11. These components are prior art. The drawings in this application specification are mainly for showing the differences between this application and the prior art. Therefore, conventional components such as the smoke hood, oil guide plate, filter, and oil storage box are not drawn.

[0036] On the basis of the existing technology, the embodiment of the present application adds a branch, namely the heat pipe 25, at the condenser 24 of the above-mentioned refrigerant circulation path. In the process of the refrigerant from the compressor 23 to the expansion valve 21, it can pass only through the condenser 24, or only through the heat pipe 25, or part of it can pass through the condenser 24 and part of it can pass through the heat pipe 25 at the same time; in the embodiment of the present application, since the condenser 24 is located in the exhaust section 12 of the range fumes extraction system, it is equivalent to not requiring an external fan, and the air is directly supplied by the wind wheel that must be present in the wind wheel chamber 1.

[0037] The method of using the self-cleaning range fumes extraction integrated air-conditioning window unit for the kitchen includes a range fumes extraction cooling mode and a self-cleaning cooling mode.

[0038] Cooker fume cooling mode: Spray pipe 32 is closed, and the refrigerant in compressor 23 flows through condenser 24 to expansion valve 21. The air conditioning system draws in outside air from fresh air inlet 42, passes through evaporator 22, and blows air into the room through air outlet 41. The cooker fume extraction system draws in cooking fumes from cooker fume outlet 11, and exhausts them to the outside through condenser 24 at exhaust section 12. This mode is suitable for use during cooking.

[0039] Self-cleaning refrigeration mode: the spray pipe 32 is turned on, and the refrigerant in the compressor 23 is passed to the expansion valve 21 through the heat pipe 25. The air-conditioning system draws in outside air from the outdoor fresh air inlet 42, passes through the evaporator 22, and blows it into the room from the air supply port 41. The range hood system draws in residual smoke in the kitchen from the range hood outlet 11, and passes through the condenser 24 to be discharged to the outside through the exhaust section 12. At this time, the smoke content of the gas drawn in is low, which plays a certain role in purging the condenser 24. The heat pipe 25 heats the water in the water tank 3, and the water in the water tank 3 is sprayed into the inside of the wind wheel cavity 1 through the spray pipe 32 for cleaning. This mode is suitable for use right after cooking. For example, after cooking is finished, you still need to prepare tableware in the kitchen and clean the stove. At this time, it is also necessary to provide cooling for the user.

[0040] During cooling, when the range hood 11 draws in smoke, it also draws in kitchen air, which contains more than just hot air, and is therefore sufficient to cool the condenser 24 .

[0041] like Figure 1 As shown, the kitchen self-cleaning fume extraction integrated air-conditioning window unit is embedded in the partition 7. Figure 1 The center a mainly displays the outdoor structure. Figure 1 Part b in the middle mainly shows the indoor structure, with the exhaust section 12 and the fresh air inlet 42 located outdoors, and the air supply outlet 41 and the range hood 11 located indoors. The partition 7 can be, for example, a wall or a window. The exhaust section 12 and the fresh air inlet 42 have different orientations, for example, they are set on different surfaces of the outer shell 6, and the fresh air inlet 42 is closer to the partition 7 than the exhaust section 12, reducing the possibility of the fresh air inlet 42 re-inhaling the exhaust gas from the exhaust section 12. The air supply outlet 41 and the range hood 11 have different orientations, for example, they are set on different surfaces of the outer shell 6, the range hood 11 faces downward, and the air supply outlet 41 is higher than the range hood 11.

[0042] like Figure 2 As shown, a first solenoid valve 26 is added to the refrigerant pipeline and is connected in series with the branch where the condenser 24 is located. It is set upstream of the condenser 24 according to the flow direction of the refrigerant. A second solenoid valve 27 is added in series with the branch where the heat pipe 25 is located and is set upstream of the heat pipe 25 according to the flow direction of the refrigerant.

[0043] The range hood cooling mode changes to: the spray pipe 32 is closed, the first solenoid valve 26 is opened, the second solenoid valve 27 is closed, and the refrigerant in the compressor 23 flows to the expansion valve 21 through the condenser 24 .

[0044] The self-cleaning refrigeration mode changes to: the spray pipe 32 is opened, the first solenoid valve 26 is closed, the second solenoid valve 27 is opened, and the refrigerant in the compressor 23 flows to the expansion valve 21 through the heat pipe 25.

[0045] Reference Figure 1 、 Figure 2 and Figure 6 A cold water inlet 61 and a hot water outlet 62 are provided on the outer shell 6. A water inlet pipe 31 is connected between the cold water inlet 61 and the water tank 3. A three-way valve 34 is connected between the spray pipe 32 and the water tank 3. A water outlet pipe 33 is connected between the three-way valve 34 and the hot water outlet 62. A sewage outlet 13 is connected to the bottom of the wind wheel cavity 1, and the sewage outlet 13 is connected to a sewage pipe 63 passing through the outer shell 6.

[0046] Wastewater from cleaning the impeller chamber 1 is discharged through the drain outlet 13, for example, to a kitchen drain. The water inlet pipe 31 is used to fill the water tank 3, and the cold water inlet 61 can be connected to tap water. The hot water outlet 62 can be connected to the faucet of the kitchen sink, and hot water is supplied to the sink from the water tank 3 via the water outlet pipe 33. The method of using this self-cleaning kitchen range hood integrated air conditioner window unit also includes a hot water cooling mode.

[0047] The range fume cooling mode changes to: the three-way valve 34 is fully closed, the first solenoid valve 26 is opened, the second solenoid valve 27 is closed, and the refrigerant in the compressor 23 flows to the expansion valve 21 through the condenser 24 .

[0048] The self-cleaning refrigeration mode changes to: the three-way valve 34 connects the water tank 3 and the spray pipe 32, closes the connection between the water tank 3 and the water outlet pipe 33, the first solenoid valve 26 is closed, the second solenoid valve 27 is opened, and the refrigerant in the compressor 23 is passed to the expansion valve 21 through the heat pipe 25.

[0049] Hot water cooling mode: Three-way valve 34 connects water tank 3 and water outlet pipe 33, closing the connection between water tank 3 and spray pipe 32. First solenoid valve 26 and second solenoid valve 27 are open. Part of the refrigerant in compressor 23 flows through condenser 24 to expansion valve 21, while the remaining refrigerant flows through heat pipe 25 to expansion valve 21. This mode is suitable for preparing food before cooking or washing dishes after meals, as these processes typically require hot water and cooling.

[0050] The power driving the water tank 3 to deliver water to the spray pipe 32 or outlet pipe 33 can be tap water pressure, that is, continuously allowing water to flow into the cold water inlet 61. In a preferred embodiment, a water pump can be provided for the water tank 3. This eliminates the need for tap water pressure and allows the spray pipe 32 to achieve a stronger spray cleaning capability. With the water pump, the spray pipe 32 in the self-cleaning cooling mode can be opened only after specific conditions are met. For example, a temperature sensor can be added to connect the three-way valve 34 to the water tank 3 and the spray pipe 32 only after the water tank 3 temperature reaches 80°C.

[0051] Besides the issue of oil smoke, another difficulty with installing an air conditioner in the kitchen lies in its installation location. Ignoring the differences in architecture and interior design between homes and considering only wind direction, the ideal location for the air conditioner vent is actually above the range hood. This is because the hottest area in the kitchen is the standing room in front of the gas stove, and the air conditioner vent should blow cold air into this space as quickly as possible. When the air conditioner vent is above the range hood, it tends to blow air into the standing room in front of the gas stove, and the range hood casing blocks the air from blowing directly onto the gas stove. When the air conditioner vent is positioned elsewhere, blowing into the standing room in front of the gas stove, it can easily affect the gas stove flame, making cooking difficult to control. However, the space above the range hood is often occupied by the range hood exhaust duct.

[0052] Reference Figure 4 、 Figure 5 and Figure 7 An inner machine cavity isolated from the wind wheel cavity 1 is provided above the wind wheel cavity 1, a wind wheel 18 is provided in the wind wheel cavity 1, a fan 43 is provided in the inner machine cavity, the fresh air inlet 42 is the air flow inlet of the inner machine cavity, and the air supply port 41 is the air flow outlet of the inner machine cavity.

[0053] The impeller cavity 1 is isolated from the internal machine cavity, and the airflows of the two do not interfere with each other. The internal machine cavity is above the impeller cavity 1, which facilitates the setting of the air supply port higher than the range hood 11. In this way, the cold air from the air conditioner will not disperse the airflow of oil smoke concentrated towards the range hood 11, and the air discharged from the air supply port 41 will not directly blow onto the gas stove flame, especially when a smoke hood is installed. The fan 43 blows towards the evaporator 22, creating a negative pressure at the fresh air port 42, allowing the fresh air port 42 to inhale fresh air from the outside. Preferably, a check valve 421 is also provided at the fresh air port 42. The rotation of the impeller 18 not only creates a negative pressure at the range hood 11, but also provides the airflow required for cooling the condenser 24.

[0054] The wind wheel 18 and the fan 43 can be driven by the same motor 5, which can be arranged in the wind wheel cavity 1, in the inner machine cavity, or between the wind wheel cavity 1 and the inner machine cavity. Figure 4 、 Figure 5 and Figure 7 As shown, the motor 5 includes two upper and lower output ends, the upper output end is connected to the fan 43, and the lower output end is connected to the wind wheel 18.

[0055] In range fume extraction cooling mode, motor 5 is turned on, three-way valve 34 is fully closed, first solenoid valve 26 is open, and second solenoid valve 27 is closed. The refrigerant in compressor 23 flows through condenser 24 to expansion valve 21. In this mode, motor 5 simultaneously supplies air and extracts range fumes, ensuring that condenser 24 is cooled.

[0056] In self-cleaning cooling mode, motor 5 turns on, three-way valve 34 connects water tank 3 and spray pipe 32, closing the connection between water tank 3 and water outlet pipe 33. First solenoid valve 26 closes, second solenoid valve 27 opens, and refrigerant in compressor 23 flows through heat pipe 25 to expansion valve 21. In this mode, fan 43, which provides cooling air, rotates, and impeller 18 rotates to ensure even spraying of the air.

[0057] In an embodiment combined with a water pump and a temperature sensor, the hot water cooling mode can be changed to: the motor 5 is turned on, the three-way valve 34 is fully closed, the first solenoid valve 26 is opened, the second solenoid valve 27 is opened, and part of the refrigerant in the compressor 23 is passed through the condenser 24 to the expansion valve 21, and the other part of the refrigerant is passed through the heat pipe 25 to the expansion valve 21. After the water temperature in the water tank 3 is heated to a preset temperature (for example, 50°C), the compressor 23 is turned off, the motor 5 is turned off, the water pump is turned on, the three-way valve 34 connects the water tank 3 and the water outlet pipe 33, and the connection between the water tank 3 and the spray pipe 32 is closed.

[0058] Reference Figure 4 、 Figure 5 and Figure 7, the oil fume suction port 11 is arranged at the bottom of the wind wheel cavity 1, the central part of the oil fume suction port 11 is an upwardly protruding ring belt 111, the wind wheel 18 comprises a bottom ring 15, a top plate 16 and wind wheel blades 17 connected between the bottom ring 15 and the top plate 16, the spray pipe 32 comprises a nozzle penetrating into the wind wheel cavity 1 and aiming at the top plate 16, the top plate 16 is provided with a plurality of through holes 161, the bottom end of the bottom ring 15 is separated from the bottom of the wind wheel cavity 1, the bottom end of the bottom ring 15 is lower than the top end of the ring belt 111, and the vertical projection of the through hole 161 is not within the range surrounded by the ring belt 111.

[0059] The protruding ring belt 111 can be a reverse horn shape. The position of the spray pipe 32 and the nozzle is relatively fixed, and as the wind wheel 18 rotates, the nozzle can flush different positions on the top plate 16 and spray to the wind wheel blades 17 and the bottom ring 15 through the through holes 161, and cooperating with the rotation of the wind wheel 18 can effectively flush the entire wind wheel 18. The ring belt 111 protrudes upwardly to avoid the washing water from falling on the gas stove through the oil fume suction port 11, and the bottom end of the bottom ring 15 is separated from the bottom of the wind wheel cavity 1 to provide sufficient space for the water after flushing the wind wheel to drain to the drain port 13.

[0060] Preferably, the central part of the top surface of the top plate 16 is provided with a water blocking ring 162, and the vertical projection of the nozzle is not within the range surrounded by the water blocking ring 162, so as to avoid the water from wetting the motor 5 or the output end of the motor 5.

[0061] With reference to Figures 3 to 5 , the inner machine cavity comprises a lower cavity body 45 and an upper cavity body 44 located above the lower cavity body 45, the fresh air inlet 42 is connected with the lower cavity body 45, the air outlet 41 is connected with the upper cavity body 44, a duct 46 is arranged between the upper cavity body 44 and the lower cavity body 45, the fan 43 is located in the duct 46, and the internal space of the upper cavity body 44 gradually increases from a position far away from the air outlet 41 to a position close to the air outlet 41.

[0062] The rotating shaft of the fan 43 is vertical, the fan 43 supplies air to the upper cavity body 44 above in the duct 46, and the bottom of the upper cavity body 44 is higher and higher from a position far away from the air outlet 41 to a position close to the air outlet 41, so that compared with a structure in which the fan 43 directly blows the evaporator 22, space is saved and noise is lower under the same air supply.

[0063] With reference to Figure 5 and Figure 6 , the wind wheel cavity 1 is connected with the exhaust section 12 through a lifting section 14, the lifting section 14 gradually increases in sectional area and height of the bottom surface from a position far away from the exhaust section 12 to a position close to the exhaust section 12, and the width of the exhaust section 12 at the smallest sectional area is smaller than the radius of the wind wheel cavity 1.

[0064] The radius of the wind wheel cavity 1 is greater than the width of the exhaust section 12 at its smallest cross-sectional area. Combined with the fact that the cross-sectional area of ​​the lifting section 14 increases from the point away from the exhaust section 12 to the point close to the exhaust section 12, a shielding portion 112 is formed at the connection between the wind wheel cavity 1 and the lifting section 14 to prevent most oil droplets from directly entering the lifting section 14. The bottom surface height of the lifting section 14 increases along the direction of the airflow. Oil droplets that can reach the lifting section 14 will also hit the inclined surface and flow back to the wind wheel cavity 1 due to gravity, which is beneficial to reducing the accumulation of oil on the condenser 24. At the same time, the cross-sectional area of ​​the lifting section 14 (the cross-sectional area perpendicular to the airflow direction) increases along the direction of the airflow, which is beneficial to the sedimentation of small droplets in the flue gas to a certain extent and reduces the oil content in the flue gas. Furthermore, the self-cleaning refrigeration mode is turned on after cooking. At this time, the airflow entering the wind wheel cavity 1 is basically smoke-free. The airflow used to cool the condenser 24 is equivalent to continuously blowing the condenser 24, which is also one of the means to reduce the accumulation of oil on the condenser 24. In the self-cleaning refrigeration mode, the bottom surface height of the lifting section 14 becomes higher and higher along the air flow direction, which also prevents sewage from entering the exhaust section 12.

[0065] In a preferred embodiment, the refrigerant pipeline from the evaporator 22 to the compressor 23 (corresponding to Figure 2 For example, this section of pipe is inserted into the lifting section 14, and can be Figure 6 The pipe section shown is wrapped around the outside of the lifting section 14 ( Figure 6 The refrigerant in the section from the evaporator 22 to the compressor 23 is in a low-temperature gaseous state, still significantly lower than the kitchen room temperature. This is used to cool the lift section 14, accelerating the condensation of the flue gas into small oil droplets that fall onto the bottom surface of the lift section 14, significantly reducing the oil content in the airflow cooling the condenser 24. This also reduces the temperature of the airflow directed to the condenser 24, optimizing cooling efficiency.

[0066] Throughout this specification, references to terms such as "one embodiment," "certain embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" indicate that a specific feature, structure, material, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0067] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A self-cleaning kitchen fume extraction integrated air-conditioning window unit, characterized in that: The invention comprises an oil fume extraction system, an air conditioning system and a water tank (3). The oil fume extraction system comprises an oil fume extraction port (11), a wind wheel cavity (1) and an exhaust section (12) in order according to the wind direction. The water tank (3) is connected to a spray pipe (32) spraying toward the interior of the wind wheel cavity (1). The air conditioning system comprises an expansion valve (21), an air supply port (41), a compressor (23), a fresh air port (42), a condenser (24) located at the exhaust section (12) and an evaporator (22) located at the air supply port (41). The oil fume extraction port (11) and the air supply port (41) are located indoors, and the fresh air port (42) and the exhaust section (12) are located outdoors. The compressor (23) is connected to the expansion valve (21) via two parallel pipelines, one of which is the condenser (24) and the other is a heat pipe (25) for heat exchange with the wall of the water tank (3).

2. The self-cleaning kitchen fume extraction integrated air-conditioning window unit according to claim 1, characterized in that: An inner machine cavity isolated from the wind wheel cavity (1) is provided above the wind wheel cavity (1), a wind wheel (18) is provided in the wind wheel cavity (1), a fan (43) is provided in the inner machine cavity, the fresh air inlet (42) is the air flow inlet of the inner machine cavity, and the air supply port (41) is the air flow outlet of the inner machine cavity.

3. The self-cleaning kitchen fume extraction integrated air-conditioning window unit according to claim 2, characterized in that: It also includes a motor (5), the output end of which is connected to both the wind wheel (18) and the fan (43).

4. The self-cleaning kitchen fume extraction integrated air-conditioning window unit according to claim 2, characterized in that: The fume extraction port (11) is arranged at the bottom of the wind wheel cavity (1), and the center of the fume extraction port (11) is an upwardly protruding annular belt (111). The wind wheel (18) includes a bottom ring (15), a top plate (16), and wind wheel blades (17) connected between the bottom ring (15) and the top plate (16). The spray pipe (32) includes a nozzle that penetrates the wind wheel cavity (1) and is aligned with the top plate (16). A plurality of through holes (161) are distributed on the top plate (16). The bottom end of the bottom ring (15) is separated from the bottom of the wind wheel cavity (1), and the bottom end of the bottom ring (15) is lower than the top of the annular belt (111). The vertical projection of the through hole (161) is not within the range surrounded by the annular belt (111).

5. The self-cleaning kitchen fume extraction integrated air-conditioning window unit according to claim 4, characterized in that: A water retaining ring (162) is provided at the center of the top surface of the top plate (16), and the vertical projection of the nozzle is not within the range surrounded by the water retaining ring (162).

6. The self-cleaning kitchen fume extraction integrated air-conditioning window unit according to claim 2, characterized in that: The internal machine cavity includes a lower cavity (45) and an upper cavity (44) located above the lower cavity (45); the fresh air inlet (42) is connected to the lower cavity (45); the air supply outlet (41) is connected to the upper cavity (44); a duct (46) is provided between the upper cavity (44) and the lower cavity (45); the fan (43) is located in the duct (46); and the internal space of the upper cavity (44) gradually increases from a position away from the air supply outlet (41) to a position close to the air supply outlet (41).

7. The self-cleaning kitchen fume extraction integrated air-conditioning window unit according to claim 1, characterized in that: A lifting section (14) is connected between the wind wheel cavity (1) and the exhaust section (12); the cross-sectional area of ​​the lifting section (14) increases from a point away from the exhaust section (12) to a point close to the exhaust section (12), and the height of the bottom surface increases; the width of the exhaust section (12) at the point where the cross-sectional area is the smallest is smaller than the radius of the wind wheel cavity (1).

8. The self-cleaning kitchen fume extraction integrated air-conditioning window unit according to claim 7, characterized in that: The refrigerant pipeline from the evaporator (22) to the compressor (23) exchanges heat with the wall of the lifting section (14).

9. The self-cleaning kitchen fume extraction integrated air-conditioning window unit according to claim 1, characterized in that: The invention also comprises a shell (6), wherein the shell (6) is provided with a cold water inlet (61) and a hot water outlet (62), a water inlet pipe (31) is connected between the cold water inlet (61) and the water tank (3), a three-way valve (34) is connected between the spray pipe (32) and the water tank (3), and a water outlet pipe (33) is connected between the three-way valve and the hot water outlet (62); and a sewage outlet (13) is connected to the bottom of the wind wheel chamber (1), and the sewage outlet (13) is connected to a sewage outlet (63) passing through the shell (6).

10. The method for using the self-cleaning range fumes extraction integrated air conditioner window unit for kitchen use according to any one of claims 1 to 9, characterized in that: Including fume extraction cooling mode and self-cleaning cooling mode; In the fume extraction cooling mode, the spray pipe (32) is closed, and the refrigerant in the compressor (23) flows through the condenser (24) to the expansion valve (21); In the self-cleaning refrigeration mode, the spray pipe (32) is opened, and the refrigerant in the compressor (23) flows to the expansion valve (21) through the heat pipe (25).

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