Fan assembly, kitchen air conditioner and kitchen air conditioning assembly

Abstract

The present application provides a fan assembly, a kitchen air conditioner, and a kitchen air conditioning assembly. Among them, the fan assembly includes an air inlet side, an air outlet side, a heat exchanger, a water spraying device, and a main fan. The air inlet side is arranged to be closely attached to the heat exchanger. The water spraying device is used to make the heat exchange surface of the heat exchanger carry water. In the fan assembly provided by the present application, the water spraying device sprays water onto the condenser, the water is heated by the condenser to become water vapor, and the water vapor is blown out by the main fan and mixed with the oil fume discharged by the range hood and then discharged into the external ambient air. The high-humidity air can condense the solid small particles in the oil fume, causing the solid small particles to settle down, thereby reducing the pollution of the discharged air to the environment by dust. When the air passes through the condenser, with the air inlet side closely attached to the condenser, the air intake volume in the gap between the condenser and the air inlet side is small, thus forming a relatively large negative pressure. At the same time, the air duct connecting the air inlet side and the air outlet side is circular, which reduces the overall air intake duct area and further increases the negative pressure.

Description

Technical Field

[0001] The present application relates to the field of mechanical technology, and more particularly, to a fan assembly, a kitchen air conditioner, and a kitchen air conditioning assembly. Background Art

[0002] The description of the background art in the present application belongs to the related art related to the present application, and is only used to illustrate and facilitate the understanding of the application content of the present application, and should not be construed as the applicant clearly believing or presuming that the applicant believes it is the prior art on the filing date of the present application when it is first filed.

[0003] When people cook food in the kitchen, a large amount of hot air is often generated, and the hot air will make the temperature in the kitchen higher than that in other indoor spaces. Especially in the hot summer, the high temperature in the kitchen will make users feel uncomfortable. Therefore, existing kitchens are equipped with air conditioners. In order to save installation space, the air conditioner and the range hood share a common exhaust duct. The oil fume discharged by the range hood contains a large amount of particles, which causes great environmental pollution. Summary of the Invention

[0004] An embodiment of the first aspect of the present application provides a fan assembly, including an air inlet side, an air outlet side, a heat exchanger, a water spraying device, and a main fan; wherein, the air inlet side is arranged to be close to the heat exchanger; the heat exchanger is a condenser, and the refrigerant dissipates heat to the air when passing through the heat exchanger; the water spraying device is used to make the heat exchange surface of the heat exchanger carry water; the main fan is an axial flow fan or a swirl fan.

[0005] In some embodiments, a water guiding wall surface is formed in the air duct connecting the air inlet side and the air outlet side, water accumulation holes are arranged on the water guiding wall surface, the water accumulation holes are communicated with a water collecting tank, and the water collecting tank is communicated with the water spraying device.

[0006] In some embodiments, the swirl fan includes a sub-fan, an output shaft connected to the sub-fan, and fan blades arranged on the output shaft. The swirl fan has an air inlet end and an air outlet end, and a flow guiding structure is formed at the air inlet end; the air discharged from the air outlet end has a direction advancing along the axis of the output shaft and a direction rotating around the axis of the output shaft.

[0007] In some embodiments, the fan blade includes: a connecting portion connected to the output shaft; a guiding air ring arranged circumferentially along the connecting portion and forming a channel with the connecting portion. The guiding air ring has an arc-shaped depression recessed towards the connecting portion, and the ventilation area of the channel gradually becomes smaller along the air flow direction; and a plurality of connecting pieces arranged between the connecting portion and the guiding air ring for dividing the channel into a plurality of sub-channels.

[0008] In some of these embodiments, the fan assembly further includes: a flow guide ring, which is arranged at the air inlet end and communicated with the channel; along the direction from the air inlet end to the air outlet end, the ventilation area of the air outlet end gradually decreases.

[0009] In some of these embodiments, along the direction from the air inlet side to the air outlet side, the ventilation area of the air outlet side gradually decreases.

[0010] In some of these embodiments, the fan assembly further includes: a wind valve, which is arranged at the air outlet side and used to control the opening or closing of the air outlet side; along the direction from the air inlet side to the air outlet side, the ventilation area of the pipeline provided with the wind valve gradually decreases.

[0011] An embodiment of the second aspect of the present application provides a kitchen air conditioner, including: the fan assembly as described in any one of the above.

[0012] An embodiment of the third aspect of the present application provides a kitchen air conditioning assembly, including: the kitchen air conditioner as described above; a tee pipe, the tee pipe includes an air outlet, a first air inlet and a second air inlet, the kitchen air conditioner is communicated with the first air inlet, the air outlet is communicated with the outdoor environment; and a range hood, the range hood is communicated with the second air inlet.

[0013] The above technical solution of the present application has the following advantages: the water spraying device sprays water on the condenser, the water is heated by the condenser and becomes water vapor, the water vapor is blown out by the main fan and mixed with the oil fume discharged by the range hood and then discharged into the external environmental air. On the one hand, after the water vapor with a certain temperature is mixed with the high-temperature oil fume, the fluctuation range of the oil fume temperature is reduced, thereby avoiding the condensation of the oil fume on the inner wall of the main air duct. On the other hand, the humid air can condense the solid small particles in the oil fume, so that the solid small particles settle down, thereby reducing the pollution of the discharged air to the environment by the dust. In addition, when the air passes through the condenser and is close to the condenser on the air inlet side, the air intake volume in the gap between the condenser and the air inlet side is small, thereby forming a relatively large negative pressure. At the same time, the air duct connecting the air inlet side and the air outlet side is circular, so that the overall air intake duct area is reduced, further increasing the negative pressure.

[0014] The additional aspects and advantages of the present application will become obvious in the following description part, or be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0016] Figure 1 is a schematic cross-sectional structure diagram of the first embodiment of the fan assembly described in the present application;

[0017] Figure 2 It is a schematic cross-sectional structure diagram of the fan blade described in the present application;

[0018] Figure 3 is Figure 2 a schematic cross-sectional structure diagram of the fan blade shown;

[0019] Figure 4 It is a schematic cross-sectional structure diagram of the second embodiment of the air deflector described in the present application.

[0020] Among them, Figures 1 to 4 the corresponding relationship between the reference numerals and the component names in the figure is:

[0021] Inlet side 10, outlet side 20, heat exchanger 30, water spraying device 40, main fan 50, sub-fan 51, output shaft 52, fan blade 53, connecting portion 531, air guide ring 532, connecting piece 533, channel 534, air deflector ring 60, air valve 70, pipeline 80, water collecting tank 90. Detailed implementation manners

[0022] In order to more clearly understand the above objects, features and advantages of the present application, the present application will be further described in detail below with reference to the drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0023] In the following description, many specific details are set forth in order to fully understand the present application. However, the present application can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0024] The following discussion provides multiple embodiments of the present application. Although each embodiment represents a single combination of the application, different embodiments of the present application can be replaced or combined, so the present application can also be considered to include all possible combinations of the same and / or different embodiments described. Thus, if one embodiment includes A, B, C, and another embodiment includes a combination of B and D, then the present application should also be considered to include embodiments including one or more all other possible combinations of A, B, C, D, although such embodiments may not be explicitly recited in the following content.

[0025] As Figure 1 shown, an embodiment of the first aspect of the present application provides a fan assembly, including an inlet side 10, an outlet side 20, a heat exchanger 30, a water spraying device 40 and a main fan 50.

[0026] The air inlet side 10 is arranged closely to the heat exchanger 30, and the air inlet side is connected to the main fan 50. It is arranged closely to the heat exchanger so that the air passing through the heat exchanger 30 is taken away by the main fan. Since the main fan 50 is a swirl fan, the negative pressure in front of the fan is relatively large, forming a negative pressure area on the heat exchanger that is adapted to the air inlet, and the negative pressure at the center is lower than that at the surrounding areas. The heat exchanger 30 is a condenser, and the refrigerant dissipates heat to the air when passing through the heat exchanger 30. The water spraying device 40 is used to make the heat transfer surface of the heat exchanger 30 carry water. The water spraying device 40 is arranged at the upper part of the heat exchanger 30, and the downward flowing water flows downward along the copper tubes and fins of the heat exchanger, absorbs heat from the tubes and fins during the flowing process, and transfers heat to the air, and forms partially evaporated water vapor. And when the water spraying amount is large and the air passing speed is high, liquid droplets are formed and enter the air and are carried downstream. The main fan 50 is an axial flow fan or a swirl fan.

[0027] In some embodiments, using an axial flow fan has the following advantages: 1), good cooling effect; 2), low unit energy consumption; 3), not easy to condense; 4), convenient and flexible.

[0028] In this embodiment, as Figure 2 shown, a swirl fan is used. When the swirl fan sucks in humid heated air with liquid droplets, on the one hand, the air supply blows forward along the axial direction, and on the other hand, the air supply has a component that rotates around the axis. This rotating component makes the liquid droplets in the humid air containing liquid droplets tend to adhere to the duct wall surface, so that the liquid droplets are no longer transmitted backward. Since there are other electrical appliances behind, the liquid droplets are thus prevented from affecting the safe operation of other electrical appliances, such as: electric switch air valves.

[0029] The air pressure of the air sent out by the swirl fan is relatively large, which increases the pressure and flow rate of the exhaust air. At the same time, a central circular negative pressure suction area with a larger negative pressure will be formed at the inlet end, so that the water flowing downward along the condenser will be sucked into the guide cover. If the water accumulated in the guide cover cannot be drained into the water receiving tray, it will flow into the duct behind, so that the water flows to a position where the user does not want it, and a specific drainage structure is required.

[0030] Those skilled in the art can select the corresponding fan according to specific requirements.

[0031] For the fan assembly provided by this application, the water spraying device 40 sprays water onto the condenser. The water is heated by the condenser and turns into water vapor. The water vapor is blown out by the main fan and mixed with the oil fume discharged by the range hood and then discharged into the external ambient air. On the one hand, after the water vapor with a certain temperature is mixed with the high-temperature oil fume, the fluctuation range of the oil fume temperature is reduced, thereby avoiding the condensation of the oil fume on the inner wall of the main air duct. On the other hand, the humid air can condense the solid small particles in the oil fume, causing the solid small particles to settle, thereby reducing the pollution of the discharged air to the environment. In addition, when the air passes through the condenser, when the air inlet side 10 is closely attached to the condenser, the air intake volume in the gap between the condenser and the air inlet side 10 is small, thereby forming a relatively large negative pressure. At the same time, the air duct connecting the air inlet side 10 and the air outlet side 20 is circular, so that the overall air intake duct area is reduced, further increasing the negative pressure. After the high-temperature and humid air passes through the negative pressure of the fan, it is accelerated by the force exerted by the fan blades and becomes a high-speed air flow. Coupled with the expansion of the flow channel, the water vapor in part of the high-humidity air is precooled to form condensed water. This condensed water will also gather in the air duct, and a slope surface is formed at the lower part of the air duct, which is connected to the bottom of the diversion cover to collect the above two kinds of condensed water.

[0032] As Figure 1 shown, in an embodiment of the present application, a water guiding wall surface is formed in the air duct connecting the air inlet side 10 and the air outlet side 20. Water accumulation holes are provided on the water guiding wall surface, and the water accumulation holes are communicated with the water collection tank 90, and the water collection tank 90 is communicated with the water spraying device 40. Among them, there is a communication channel downward from the water accumulation hole, which is connected to the water collection tank. The water accumulation hole is located in the cavity where the diagonal flow impeller is arranged and at its lower part, and it is communicated with the air inlet side of the diagonal flow impeller. Due to the rapid rotation of the impeller, a positive pressure is formed at the water accumulation hole, which will cause part of the air to flow from the communication channel to the air inlet side. Those skilled in the art generally do not set such a short-circuit bypass, which will reduce the air supply efficiency of the fan. However, in the case of water accumulation, due to the positive pressure in the fan cavity, the accumulated water can be easily discharged to the air inlet side, and even a small amount of accumulated water can be easily drained. In the case of high humidity, there will be more water droplets gathering, and the problem of water accumulation can also be easily solved.

[0033] When the air passing through the condenser is relatively large, the liquid on the condenser will enter the air duct along with the air, and the water vapor will condense into water droplets on the wall surface of the air duct. The above-mentioned water flows back into the water collection tank 90 along the water guiding wall surface through the water accumulation holes, recycling the excess liquid and reusing it through the spraying device, avoiding the formation of water accumulation.

[0034] As Figure 1 shown, in an embodiment of the present application, the swirl fan includes a sub-fan 51, an output shaft 52 connected to the sub-fan 51, and fan blades 53 arranged on the output shaft 52.

[0035] The swirl fan has an air inlet end and an air outlet end. A guiding structure is formed at the air inlet end, which is located between the air inlet side and the swirl fan, facilitating the smooth entry of air into the fan chamber.

[0036] The air discharged from the air outlet end has a direction advancing along the axis of the output shaft 52 and a direction rotating around the axis of the output shaft 52. When it enters the air duct, due to the expansion of the cross-section of the air duct, a relatively large static pressure is formed, which is conducive to the long-distance transportation of the hot and humid exhaust air through the air duct.

[0037] The wind pressure discharged by the swirl fan is relatively large, which will form a central circular negative pressure suction area with a greater negative pressure at the inlet end, thereby accelerating the air flow rate and increasing the heat exchange efficiency of the product.

[0038] Such as Figure 2 and Figure 3 As shown in

[0039] The connecting portion 531 is connected to the output shaft 52.

[0040] The air guiding ring 532 is arranged along the circumferential direction of the connecting portion 531, and a channel 534 is formed between the air guiding ring 532 and the connecting portion 531. The air guiding ring 532 has an arc-shaped depression recessed towards the connecting portion 531, and the ventilation area of the channel 534 gradually decreases along the air flow direction. The outer air duct cross-section of the arc-shaped depression further reduces the air inlet area at the air inlet and the air inlet area in the middle section, making the expansion effect more obvious in the latter section, which has an obvious effect on increasing the static pressure. The air flow ejected by the mixed-flow impeller has two directions of air flow, namely axial and axially rotating. When entering the subsequent expanding air duct, after increasing the static pressure through the outer air duct cross-section of the arc-shaped depression, the static pressure is further increased, which can significantly improve the performance of transporting air to the far end.

[0041] A plurality of connecting pieces 533 are arranged between the connecting portion 531 and the air guiding ring 532 for dividing the channel 534 into a plurality of sub-channels 534.

[0042] The ventilation area at the inlet of the air guiding ring 532 is relatively large. Due to the arrangement of the arc-shaped depression, the ventilation area of the channel 534 becomes smaller, which will form a central circular negative pressure suction area with a greater negative pressure at the inlet end, thereby accelerating the air flow rate and increasing the heat exchange efficiency of the product.

[0043] Such as Figure 1 As shown in

[0044] Make the wind pressure on the exhaust side 20 relatively large, so that the exhausted air has greater kinetic energy, and avoid the occurrence of backflow when the wind in the external environment is strong.

[0045] As Figure 1 shown, in an embodiment of the present application, the fan assembly further includes: a flow guide ring 60.

[0046] The flow guide ring 60 is arranged at the air inlet end and is communicated with the channel 534.

[0047] Along the direction from the air inlet end to the air exhaust end, the ventilation area of the air exhaust end gradually decreases.

[0048] As the ventilation area of the channel 534 of the flow guide ring 60 gradually becomes smaller, a central circular negative pressure air suction area with a greater negative pressure will be formed at the inlet end, thereby accelerating the air flow rate and increasing the heat exchange efficiency of the product.

[0049] As Figure 4 shown, in an embodiment of the present application, the fan assembly further includes: a wind valve 70.

[0050] The wind valve 70 is arranged on the exhaust side 20 and is used to control the opening or closing of the exhaust side 20. The wind valve is provided with a switch shaft. When the motor rotates, the wind valve rotates along the switch shaft to open the wind valve. Among them, when the main fan is running and starting, the wind valve opens from the closed state to the open state in 1-4 seconds. Since the rotation angle is relatively uniform, however, the actual opening area of the air duct is from small to large and is non-linear. The opening area per unit time in the initial section is small, the opening area per unit time in the middle section is the largest, and the opening area per unit time in the ending section of the opening is small. In this kind of opening, it can well cooperate with the process of the diagonal flow fan establishing wind pressure in the air duct. Especially when the external air duct is connected to other air supply fans, it can avoid the situation where positive outward air supply cannot be established under the condition of relatively large back pressure.

[0051] Along the direction from the air inlet side 10 to the air exhaust side 20, the ventilation area of the pipeline 80 provided with the wind valve 70 gradually decreases.

[0052] The wind valve 70 can control the opening or closing of the exhaust side 20. When the wind in the external environment is strong, the wind valve 70 closes to avoid the occurrence of backflow. The ventilation area of the pipeline 80 gradually decreases, and the exhausted air has greater kinetic energy, avoiding the occurrence of backflow when the wind in the external environment is strong.

[0053] The kitchen air conditioner provided by the embodiment of the second aspect of the present application includes: the fan assembly as described in any one of the above.

[0054] For the kitchen air conditioner provided by the present application, the water spraying device of the fan assembly sprays water onto the condenser. The water is heated by the condenser and turns into water vapor. The water vapor is blown out by the main fan and mixed with the oil fume discharged by the range hood and then discharged into the external ambient air. On the one hand, after the water vapor with a certain temperature is mixed with the high-temperature oil fume, the fluctuation range of the oil fume temperature is reduced, thereby avoiding the condensation of the oil fume on the inner wall of the main air duct. On the other hand, the humid air can condense the solid small particles in the oil fume, causing the solid small particles to settle, thereby reducing the pollution of the discharged air to the environment. In addition, when the air passes through the condenser, when it is close to the condenser on the air inlet side, the air intake volume in the gap between the condenser and the air inlet side is small, thereby forming a large negative pressure. At the same time, the air duct connecting the air inlet side and the air outlet side is circular, which reduces the overall air inlet duct area and further increases the negative pressure.

[0055] In some embodiments, the air duct for the kitchen air conditioner's condensate heat exhaust is connected to the air duct of the kitchen range hood through a tee. The two are connected by a Y-shaped air duct, and the air duct for the kitchen air conditioner's condensate heat exhaust shares an exhaust air duct with the air duct of the kitchen range hood. Generally, the fan of the range hood has a large suction force and a large pressure head. In a common application scenario, the kitchen air conditioner is turned on after the range hood is turned on. When the two share a smoke exhaust air duct, a large back pressure will be formed in the hot air exhaust duct of the kitchen air conditioner. Therefore, a structure for generating static pressure needs to be added. For example, the fan assembly further includes: a damper 70.

[0056] The damper 70 is arranged on the air outlet side 20 and is used to control the opening or closing of the air outlet side 20. The damper is provided with a switch shaft. When the motor rotates, the damper rotates along the switch shaft to open the damper. Among them, when the main fan is running and starting, the damper is opened from the closed state to the open state in 1-4 seconds. Since the rotation angle is relatively uniform, however, the actual opening area of the air duct is from small to large and is non-linear. The opening area per unit time in the initial section is small, the opening area per unit time in the middle section is the largest, and the opening area per unit time at the end of the opening is small. In this kind of opening, it well matches the process of the mixed-flow fan establishing air pressure in the air duct. Especially when the external air duct is connected to other air supply fans, it can avoid the situation where a positive outward air supply cannot be established under a large back pressure.

[0057] The air guide ring 532 is arranged along the circumferential direction of the connecting part 531, and a channel 534 is formed between the air guide ring 532 and the connecting part 531. The air guide ring 532 has an arc-shaped depression recessed towards the connecting part 531, and the ventilation area of the channel 534 gradually decreases along the air flow direction. The outer air duct cross-section of the arc-shaped depression further reduces the air inlet area at the air inlet and the air inlet area in the middle section, making the expansion effect more obvious in the later section, which has an obvious effect on increasing the static pressure. The air flow ejected by the diagonal flow impeller has air flows in two directions, namely the axial direction and the direction of rotation along the axis. When entering the subsequent expansion air duct, after increasing the static pressure through the outer air duct cross-section of the arc-shaped depression, the static pressure is further increased, which can significantly improve the performance of transporting air to the far end.

[0058] As Figure 2 shown, a swirl fan is adopted. When the swirl fan inhales humid heated air with droplets, on the one hand, the air supply blows forward along the axial direction, and on the other hand, the air supply has a component rotating around the axis. The swirl fan has an air inlet end and an air outlet end. A guiding structure is formed at the air inlet end, which is located between the air inlet side and the swirl fan, facilitating the smooth entry of air into the fan cavity.

[0059] The air discharged from the air outlet end has a direction advancing along the axis of the output shaft 52 and a direction rotating around the axis of the output shaft 52. When it enters the air duct, due to the expansion of the air duct cross-section, a relatively large static pressure is formed, which is conducive to the discharge of hot and humid exhaust air to a distance through the air duct.

[0060] The kitchen air conditioning assembly provided by the third aspect of the present application includes: the above-mentioned kitchen air conditioner; a three-way pipe, the three-way pipe includes an air outlet, a first air inlet and a second air inlet, the kitchen air conditioner is communicated with the first air inlet, and the air outlet is communicated with the outdoor environment; and a range hood, the range hood is communicated with the second air inlet.

[0061] In the kitchen air conditioning assembly provided by the present application, the air with water vapor discharged by the kitchen air conditioner is mixed with the oil fume discharged by the range hood in the three-way pipe and discharged into the external environmental air. On the one hand, after the water vapor with a certain temperature is mixed with the high-temperature oil fume, the fluctuation range of the oil fume temperature is reduced, thereby avoiding the condensation of the oil fume on the inner wall of the three-way pipe. On the other hand, the high-humidity air can condense the solid small particles in the oil fume, causing the solid small particles to settle, thereby reducing the pollution of the dust in the air discharged from the main air duct to the environment.

[0062] The following discussion provides multiple embodiments of the present application regarding condensed water. Although each embodiment represents a single combination of the application, different embodiments of the present application can be replaced or combined, so the present application can also be considered to include all possible combinations of the same and / or different embodiments described. Thus, if one embodiment includes A, B, and C, and another embodiment includes the combination of B and D, then the present application should also be considered to include embodiments containing one or more of all other possible combinations of A, B, C, and D, even though such embodiments may not be explicitly described in the following text.

[0063] The water receiving tray assembly for installing an evaporator provided by an embodiment of the first aspect of the present application includes: a water receiving tray and a baffle.

[0064] The water receiving tray has a receiving cavity, and a water pumping hole is provided on the side wall of the water receiving tray. The water pump is arranged inside or outside the receiving cavity, a pipe passes through the water pumping hole, and water flows from inside the receiving cavity to outside the receiving cavity.

[0065] The baffle is connected to the water receiving tray and is located inside the receiving cavity. A water passing channel is formed between the baffle and the bottom wall of the water receiving tray. The baffle divides the receiving cavity into an installation cavity and a water storage cavity, and the evaporator is arranged in the installation cavity.

[0066] Wherein, the water pumping hole is communicated with the water storage cavity, and the distance between the water pumping hole and the bottom wall of the water receiving tray is less than the distance between the bottom end of the baffle and the bottom wall of the water receiving tray.

[0067] In the water receiving tray assembly provided by the present application, gaseous water and gaseous oil fume in the air will condense into condensed water and oil droplets on the evaporator. The condensed water and oil droplets are collected in the water receiving tray. Since the density of oil is lower than that of water, an oil layer is formed on the surface of the water. The baffle blocks the oil layer in the installation cavity, and the condensed water enters the water storage cavity through the water passing channel. The condensed water can be pumped away by the water pump from the water pumping hole for reuse, thus avoiding the situation that oil enters the water storage cavity and corrodes the water pump.

[0068] In an embodiment of the present application, a water collecting groove is provided on the bottom wall of the water receiving tray, and the water collecting groove is located in the water storage cavity.

[0069] The setting of the water collecting groove increases the space for storing water in the water storage cavity. On the one hand, it avoids the situation that condensed water overflows from the water receiving tray when there is too much condensed water. On the other hand, it can increase the amount of available condensed water and avoid the waste of condensed water.

[0070] In an embodiment of the present application, a guiding inclined surface inclined towards the water collecting groove is provided on the bottom wall of the water receiving tray.

[0071] The setting of the guiding inclined surface enables the condensed water to enter the water collecting groove more smoothly.

[0072] In an embodiment of the present application, the water receiving tray assembly further includes: a first filter screen.

[0073] The first filter screen is disposed in the water passing channel and is respectively connected to the baffle and the water receiving tray.

[0074] When the heat exchanger starts to work, the height of the condensed water does not exceed the height of the water channel. Some oil will enter the water storage cavity through the water passing channel along with the condensed water. The setting of the first filter screen can block this part of the oil and enable the condensed water to enter the water storage cavity, thereby avoiding the situation that the oil enters the water storage cavity and causes corrosion of the water pump.

[0075] In an embodiment of the present application, the water receiving tray assembly further includes: a second filter screen.

[0076] The second filter screen is fixed on the bottom wall of the water receiving tray and seals the opening of the water collecting tank. The water pumping hole is located on the tank wall of the water collecting tank.

[0077] When the heat exchanger starts to work, the height of the condensed water does not exceed the height of the water channel. Some oil will enter the water storage cavity through the water passing channel along with the condensed water. The setting of the second filter screen can block this part of the oil and enable the condensed water to enter the water collecting tank, thereby avoiding the situation that the oil enters the water collecting tank and causes corrosion of the water pump.

[0078] In an embodiment of the present application, an oil-repellent layer is provided on the inner wall surface of the water receiving tray and the outer surface of the baffle.

[0079] The setting of the oil-repellent layer avoids the situation that oil stays on the water receiving tray and the baffle to form oil stains. On the one hand, it avoids the corrosion of the water receiving tray and the baffle by the oil stains. On the other hand, it ensures the cleanliness of the water receiving tray and the baffle.

[0080] In an embodiment of the present application, clamping grooves are provided on two side walls corresponding to the water receiving tray, and clamping structures cooperating with the clamping grooves are respectively provided at both ends of the baffle.

[0081] The baffle is detachably fixed on the water receiving tray through the cooperation of the clamping structure and the clamping groove, which facilitates the cleaning and maintenance of the baffle.

[0082] The kitchen air conditioner provided by the embodiment of the second aspect of the present application includes: the water receiving tray assembly, a condenser, an evaporator, and a water pump as described in any one of the above.

[0083] The evaporator is disposed in the installation cavity of the water receiving tray assembly. The water pump is communicated with the water pumping hole of the water receiving tray assembly and is used to transport the condensed water in the water receiving tray assembly to the condenser.

[0084] For the kitchen air conditioner provided by this application, gaseous water and gaseous cooking fumes in the air will condense into condensed water and oil droplets on the evaporator. The condensed water and oil droplets are collected in the water receiving tray. Since the density of oil is lower than that of water, an oil layer is formed on the surface of the water. The baffle blocks the oil layer in the installation cavity, and the condensed water enters the water storage cavity through the water passage. The condensed water can be pumped away by the water pump through the water pumping hole and sprayed on the condenser. The condensed water is heated by the condenser and turned into water vapor. The water vapor is blown out by the fan and enters the main air duct to be mixed with the cooking fumes exhausted by the range hood and then discharged into the external ambient air. The situation that the oil in the water receiving tray assembly enters the water pump along with the condensed water, causing corrosion of the water pump, may occur.

[0085] In one embodiment of this application, the kitchen air conditioner further includes: a third filter screen.

[0086] The third filter screen is fixed on the evaporator and is located in the installation cavity of the water receiving tray assembly. A filter cavity is formed between the third filter screen and the outer surface of the evaporator.

[0087] Gaseous water and gaseous cooking fumes in the air will condense into condensed water and oil droplets on the evaporator. The condensed water enters the water receiving tray assembly through the third filter screen, and the oil droplets are retained in the filter cavity. The setting of the third filter screen can further reduce the amount of oil droplets entering the water receiving tray assembly.

[0088] In this application, terms such as "installation", "connection", "attachment", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "attachment" can be a direct attachment or an indirect attachment through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0089] In the description of this specification, the descriptions of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0090] The above are only the preferred embodiments of this application and are not used to limit this application. For those skilled in the art, this application can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this application shall be included within the protection scope of this application.

Claims

1. A fan assembly, characterized in that, It includes an air inlet side, an air exhaust side, a heat exchanger, a water spraying device and a main blower; wherein, the air inlet side is arranged to be close to the heat exchanger, the air ducts of the air inlet side and the air exhaust side are circular, and the external air duct of the blower assembly is connected with other air supply blowers; The heat exchanger is a condenser, and the refrigerant dissipates heat to the air when passing through the heat exchanger; The water spraying device is used to make the heat transfer surface of the heat exchanger carry water; The main blower is a swirl blower; It further includes a damper, which is arranged on the air exhaust side and is used to control the opening or closing of the air exhaust side; along the direction from the air inlet side to the air exhaust side, the ventilation area of the pipeline where the damper is arranged gradually decreases; The damper is provided with a switch shaft. When the switch shaft is driven by a motor to rotate, the damper rotates along the switch shaft to open or close the air. When the main blower runs and starts, the damper opens from the closed state to the open state in 1 - 4 seconds, and the angular velocity of the rotation of its switch shaft is an average value. The opening area per unit time in the initial section is smaller, the opening area per unit time in the middle section is the largest, and the opening area per unit time in the ending section of the opening is smaller.

2. The blower assembly according to claim 1, wherein, A water guiding wall surface is formed in the air duct connecting the air inlet side and the air exhaust side, water accumulation holes are arranged on the water guiding wall surface, the water accumulation holes are communicated with a water collecting tank, and the water collecting tank is communicated with the water spraying device.

3. The blower assembly according to claim 1, wherein, The swirl blower includes a sub - blower, an output shaft connected to the sub - blower, and fan blades arranged on the output shaft. The swirl blower has an air inlet end and an air exhaust end, and a guiding structure is formed at the air inlet end; the air discharged from the air exhaust end has a direction advancing along the axis of the output shaft and a direction rotating around the axis of the output shaft.

4. The blower assembly according to claim 3, wherein, The fan blade includes: a connecting part, and the connecting part is connected with the output shaft; A wind guiding ring, which is arranged along the circumference of the connecting part and forms a channel with the connecting part. The wind guiding ring has an arc - shaped depression concave towards the connecting part, and the ventilation area of the channel gradually becomes smaller along the air flow direction; and A plurality of connecting pieces, which are arranged between the connecting part and the wind guiding ring and are used to divide the channel into a plurality of sub - channels.

5. The fan assembly according to claim 4, wherein, It further includes: A guiding ring, which is arranged at the air inlet end and is communicated with the channel; Along the direction from the air inlet end to the air exhaust end, the ventilation area of the air exhaust end gradually decreases.

6. The blower assembly according to claim 1, wherein, Along the direction from the air inlet side to the air exhaust side, the ventilation area of the air exhaust side gradually decreases.

7. A kitchen air conditioner, characterized in that, It includes: The blower assembly according to any one of claims 1 to 6.

8. A kitchen air conditioning component, characterized in that, It includes: The kitchen air conditioner according to claim 7; A three - way pipe, which includes an air outlet, a first air inlet and a second air inlet. The kitchen air conditioner is communicated with the first air inlet, and the air outlet is communicated with the outdoor environment; and An oil fume extractor, which is communicated with the second air inlet.

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