Water box, air-conditioning type range hood using the water box and drainage control method thereof

Abstract

A water box, an air-conditioning type range hood using the water box, and a drainage control method thereof, wherein the water box is composed of a first water box, a second water box, and a third water box adjacent to each other in sequence, a first float switch is installed on the top of the second water box, and a second float switch is installed on the bottom of the second water box, the second water box serves as a water receiving box, the first water box serves as a water return box, and the third water box serves as a drainage box, the adjacent water boxes are connected through water outlets, and the water levels of the water boxes are controlled by the float switches and a water pump. The water box has a novel structure, and the air-conditioning type range hood installs the water box in a casing, and the condensed water condensed on the evaporator can directly fall into the second water box, and the condensed water in the third water box is transported to the condenser by the water pump, that is, the air-conditioning condensed water can be used to dissipate heat from the condenser to improve the energy efficiency of the air conditioner. In addition, the control method of the air-conditioning type range hood can intelligently control the discharge of condensed water and the opening state of the air conditioner according to the amount of condensed water generated.

Description

Technical Field

[0001] The present invention relates to a range hood, in particular to a water box, an air-conditioning type range hood using the water box and a drainage control method thereof. Background Art

[0002] The kitchen is the primary place where people cook, and the quality of the kitchen air environment directly affects the cooking experience. Kitchens are hot in the summer and cold in the winter, creating a need for both cooling and heating. To address this, various kitchen air conditioners have been invented to cool the kitchen air in the summer and provide warm air in the winter, enhancing cooking comfort.

[0003] Existing kitchen air conditioners are essentially the same as conventional air conditioners and generally come in two types. One type features a split indoor / outdoor unit, with the outdoor unit located outdoors and the indoor unit indoors, each equipped with a motor and fan. These require piping, which requires drilling holes in the wall and disrupts the interior design. The outdoor unit also needs to be mounted outdoors, making installation difficult and less compact. Another type features an integrated indoor / outdoor unit. While this allows both the second and first heat exchangers to be installed indoors, it requires destroying a larger area of wall to install the heat exhaust pipe for the first heat exchanger, increasing installation complexity and affecting the aesthetics of the interior. Furthermore, due to limited kitchen space, kitchen air conditioners cannot be too large, resulting in significant heat dissipation issues. If heat cannot be dissipated promptly during use, the air conditioner's energy efficiency is significantly reduced. However, existing kitchen air conditioners and range hoods operate independently, preventing them from being linked together. Heat generated by the kitchen air conditioner cannot be discharged outdoors through the range hood's fan. Therefore, how to dissipate heat generated by the kitchen air conditioner through the range hood has become an urgent issue.

[0004] Although there are products such as air-conditioning hoods on the market, which are based on the range hood platform and add air conditioning components, they can realize all the functions of the range hood and the function of air conditioning at the same time. However, these air-conditioning hoods often simply merge the functions of the indoor unit of a traditional air conditioner with that of a traditional range hood. The outdoor unit of the air conditioner still needs to be installed separately outdoors. This type of air-conditioning hood is not integrated enough and the installation is relatively cumbersome. Moreover, the pipes and lines connecting the indoor and outdoor units of the air conditioner will also damage the wall. In addition, during the use of the air-conditioning hood, the evaporator of the air conditioner will produce condensed water. Currently, it is discharged outdoors through a water pipe. There is no other discharge method, and the condensed water is not effectively utilized. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide a water box with a novel structure and water in the water box can be discharged smoothly in response to the above-mentioned existing technical status.

[0006] The second technical problem to be solved by the present invention is to provide an air-conditioning type range hood that can collect air-conditioning condensed water and cool the condenser in response to the above-mentioned existing technical status.

[0007] The third technical problem to be solved by the present invention is to provide a drainage control method for an air-conditioning type range hood capable of intelligently controlling drainage in response to the above-mentioned existing technical status.

[0008] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: the water box is characterized in that it includes a first water box, a second water box and a third water box adjacent to each other in sequence, the second water box is located between the first water box and the third water box, the bottom of the second water box is lower than the bottom of the first water box, the bottom of the third water box is lower than the bottom of the second water box, a first float switch is installed on the top of the second water box, and a second float switch is installed on the inner bottom of the second water box. A first water outlet hole connected to the second water box is opened at the lower part of the first water box, the first water outlet hole is located above the second float switch, a valve is installed on the first water outlet hole, a second water outlet hole connected to the third water box is opened at the lower part of the second water box, and a water pump for pumping water out of the third water box is installed inside the third water box.

[0009] Preferably, when the second water box is filled with water, the first float switch is closed. Thus, through the closure of the first float switch, the controller can read the output signal of the first float switch and start the water pump, thereby pumping water out of the third water box, thereby causing the water in the second water box to continuously flow into the third water box, ultimately lowering the water level in the second water box.

[0010] Further preferably, the water in the first water box can overflow into the second water box when full, and the height of the overflow port of the first water box is not lower than the water level of the second water box corresponding to the closed state of the first float switch. In this way, once the water in the first water box overflows, it can flow into the second water box. Moreover, when the overflow volume is large enough, the first float switch can be closed, thereby driving the water pump to start and accelerate drainage.

[0011] The technical solution adopted by the present invention to solve the above-mentioned second technical problem is: the air-conditioning type range hood includes a casing and an air conditioning component installed inside the casing, the casing is provided with a smoke exhaust channel and an air outlet channel isolated from each other, the air conditioning component includes a compressor, a condenser and an evaporator, and the compressor, condenser and evaporator are connected by a refrigerant pipeline, and is characterized in that: the water box is installed in the casing, and the condensed water condensed on the evaporator can directly fall into the second water box, the condenser is arranged in the smoke exhaust channel, and the condensed water in the third water box is transported to the condenser through the water pump.

[0012] In order to recycle the condensed water flowing through the condenser, a water receiving box is provided below the condenser, and the water outlet of the water receiving box is connected to the first water box via a return pipe. In this way, the condensed water flows downward toward the surface of the condenser, and part of it is evaporated by the heat of the condenser. The unevaporated part flows along the surface of the condenser into the water receiving box and then into the first water box via the return pipe. This prevents water in the water receiving box from overflowing and adversely affecting the stable operation of the range hood. The position of the water receiving box can be higher than that of the first water box, so that the water in the water receiving box can naturally flow into the first water box from high to low. A water pump can also be installed in the return pipe, and under the action of the water pump, the water in the water receiving box is transported to the first water box. In this way, the positional relationship between the water receiving box and the first water box is not required.

[0013] As a preferred solution, a liquid distributor is installed in the smoke exhaust channel, and the water outlet of the water pump is connected to the water inlet of the liquid distributor through an outlet pipe. The condensed water flowing out of the water outlet of the liquid distributor can flow to the surface of the condenser.

[0014] In order to ensure that the condensate flows evenly into the liquid distributor, a diverter can be installed in the waterway between the water outlet of the pump and the water inlet of the liquid distributor. Common diverter devices include tees and water distribution tanks.

[0015] To ensure that the condensed water flows evenly along the surface of the condenser, the condenser is arranged vertically or tilted relative to a vertical plane. The liquid distributor is strip-shaped and arranged horizontally along the upper edge of the condenser. The water outlets of the liquid distributor are evenly spaced along the length of the liquid distributor. The liquid distributor can also have multiple water inlets that are evenly spaced along the length of the liquid distributor. This allows the condensed water to flow more evenly to the condenser after passing through the liquid distributor, improving the heat dissipation effect.

[0016] As another preferred solution, an atomizer is installed in the smoke exhaust channel, the water outlet of the water pump is connected to the water inlet of the atomizer through a water outlet pipe, and the condensed water atomized by the atomizer is sprayed onto the surface of the condenser from the spray port of the atomizer.

[0017] The atomizer can be arranged at different positions in the smoke exhaust channel. Preferably, along the gas flow direction, the atomizer is arranged downstream of the condenser.

[0018] Further preferably, a range fume fan is installed inside the casing, and the exhaust channel is arranged downstream of the range fume fan along the flow direction of the oil fume, and the exhaust channel includes a first exhaust channel and a second exhaust channel. A switching valve is installed at the outlet of the range fume fan for switching one of the first exhaust channel and the second exhaust channel to be connected to the outlet of the range fume fan, and the condenser is arranged in the first exhaust channel.

[0019] The first smoke exhaust channel and the second smoke exhaust channel can have multiple smoke exhaust modes. Preferably, the first smoke exhaust channel has a first smoke exhaust port, and the second smoke exhaust channel has a second smoke exhaust port, and the first smoke exhaust port and the second smoke exhaust port are independent of each other.

[0020] In order to prevent the oil smoke from contaminating the condenser, an oil smoke purification device is installed in the first exhaust channel, and is arranged upstream of the condenser along the oil smoke flow direction. The oil smoke purification device can generally be an electrostatic purification device.

[0021] In order to enable the range hood to blow out conditioned air smoothly, an air inlet and an air outlet of the air outlet channel are provided on the casing, and an internal fan blowing air toward the air outlet is installed in the air outlet channel, and along the direction of gas flow, the internal fan is located downstream of the evaporator.

[0022] Further preferably, the air inlet is in fluid communication with the outside of the kitchen or with the outside of the kitchen, and the air outlet is provided on the front side of the casing or on the top of the casing.

[0023] Further preferably, a throttling device is installed on the refrigerant pipeline between the condenser and the evaporator.

[0024] The compressor can be installed in a plurality of different positions. In order to make the system structure more compact and the installation more convenient, the compressor is installed inside the casing.

[0025] The technical solution adopted by the present invention to solve the third technical problem is: the control method of the air-conditioning type range hood is characterized by installing an internal fan in the air outlet channel and comprising the following steps:

[0026] S1, start;

[0027] S2, determining whether the air conditioner is turned on;

[0028] If yes, proceed to step S3;

[0029] If not, the range hood is turned on and the process proceeds to step S10;

[0030] S3, the water pump is turned on, the liquid distributor is working, and the valve is normally closed;

[0031] S4, determining whether the first float switch is activated;

[0032] If yes, proceed to step S5;

[0033] If not, the air conditioner continues to operate and then enters step S10;

[0034] S5: The air conditioner stops, the indoor fan continues to work, air is supplied normally, and the liquid distributor works;

[0035] S6, determining whether the first float switch is disconnected for a set time of t minutes;

[0036] If yes, proceed to step S7;

[0037] If not, return to step S5;

[0038] S7, valve opens;

[0039] S8, determining whether the second float switch is disconnected;

[0040] If yes, proceed to step S9;

[0041] If not, return to step S7;

[0042] S9, air conditioning is turned on and the valve is closed;

[0043] S10, determining whether the air conditioner is turned off;

[0044] If yes, proceed to step S11;

[0045] If not, return to step S3;

[0046] S11: The air conditioner stops, the indoor fan continues to work, air is supplied normally, the liquid distributor works, and the valve is open;

[0047] S12, determining whether the second float switch is disconnected;

[0048] If yes, proceed to step S13;

[0049] If not, return to step S11;

[0050] S13, end.

[0051] 14. The control method of the air-conditioning range hood according to claim 13, wherein the set time t in step S6 satisfies: t = 1 to 10.

[0052] Compared with the prior art, the advantages of the present invention are that the water box is composed of a first water box, a second water box and a third water box which are adjacent to each other in sequence. Moreover, the second water box can be used as a water receiving box, the first water box can be used as a return water box, and the third water box can be used as a drainage box. The adjacent water boxes are connected through water outlets, and the water level of the water box can be controlled by a float switch and a water pump. The water box structure is relatively novel. The air-conditioned range hood installs the above-mentioned water box in the casing. The condensed water condensed on the evaporator can directly fall into the second water box, and the condensed water in the third water box is transported to the condenser through the water pump, that is, the air-conditioned condensed water can be used to dissipate heat from the condenser to improve the energy efficiency of the air conditioner. In addition, the control method of the air-conditioned range hood can intelligently control the discharge of condensed water and the opening state of the air conditioner according to the amount of condensed water generated. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 Schematic diagram of the structure of the water box according to an embodiment of the present invention (valve closed state);

[0054] Figure 2 This is a schematic structural diagram of a water box according to an embodiment of the present invention (valve open state);

[0055] Figure 3 Schematic diagram of the structure of the range hood according to an embodiment of the present invention (the first water box is overflowing);

[0056] Figure 4 Schematic diagram of the structure of the range hood according to an embodiment of the present invention (valve open state);

[0057] Figure 5 This is a schematic structural diagram of a liquid distributor according to an embodiment of the present invention;

[0058] Figure 6 is a structural schematic diagram of another range hood according to an embodiment of the present invention;

[0059] Figure 7 Schematic diagram of the principle of an air conditioning assembly according to an embodiment of the present invention;

[0060] Figure 8 This is a logic control diagram of the control method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0061] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0062] like Figure 1 and Figure 2As shown, the water box of this embodiment includes a first water box 11, a second water box 12, and a third water box 13, which are adjacent to each other in sequence. That is, the second water box 12 is located between the first water box 11 and the third water box 13. The bottom of the second water box 12 is lower than the bottom of the first water box 11, and the bottom of the third water box 13 is lower than the bottom of the second water box 12. In addition, a first water outlet 111 is formed in the lower portion of the first water box 11, which communicates with the second water box 12, and a second water outlet 121 is formed in the lower portion of the second water box 12, which communicates with the third water box 13. In this way, water in the first water box 11 can flow into the second water box 12 through the first water outlet 111, and water in the second water box 12 can flow into the third water box through the second water outlet 121.

[0063] The first float switch 14 is mounted on the top of the second water box 12. For example, the first float switch 14 can be mounted on the upper portion of the side wall of the second water box 12. Normally, the first float switch 14 is in the open state and only closes when the second water box 12 is full of water. The second float switch 15 is mounted on the inner bottom of the second water box 12. Normally, the second float switch 15 is in the closed state as long as there is water in the second water box 12 and only opens when the second water box 12 is empty of water. In addition, in addition to using a float switch, other water level sensors can also be used to sense the water level.

[0064] In this embodiment, when the first water box 11 is full, the water can overflow into the second water box 12. Furthermore, the height of the overflow port of the first water box 11 is not lower than the water level of the second water box 12 corresponding to the closed state of the first float switch 14. In other words, the first float switch 14 can also be triggered by water flowing into the second water box 12 after the first water box 11 overflows.

[0065] In addition, a valve 16 is installed at the first water outlet 111. The valve 16 can take a variety of different forms, and generally, a rotary valve can be used. When the valve 16 is open, the water in the first water box 11 can flow into the second water box 12. When the valve 16 is closed, the water in the first water box 11 cannot flow into the second water box 12. Generally, as long as the water in the first water box 11 does not overflow, the valve 16 is in a normally closed state. When the water in the first water box 11 overflows, the valve 16 can be opened to allow the water in the first water box 11 to quickly flow into the second water box 12.

[0066] A water pump 17 is installed inside the third water box 13 to drain the water in the third water box 13. To ensure the amount of water discharged, the maximum flow rate of the water pump 17 is greater than the flow rate of the second water outlet 12 of the second water box 12. In this way, if there is too much water in the second water box 12, such as when the first float switch 14 is closed, the flow rate of the water pump 17 can be increased to the maximum to speed up the drainage of the water box.

[0067] like Figures 3 to 7 As shown, the air-conditioned range hood of this embodiment includes a range hood assembly and an air conditioning assembly. The air conditioning assembly comprises a compressor 31, a condenser 32, and an evaporator 33. The compressor 31, condenser 32, and evaporator 33 are interconnected via a refrigerant line 34. A throttling device 35 is installed on the refrigerant line 34 between the condenser 32 and the evaporator 33. A refrigerant, such as water, ethylene glycol, or glycerol, flows through the refrigerant line 34. The specific operating principle of the air conditioning assembly is the same as that of conventional air conditioners and will not be described in detail here.

[0068] The oil fume extraction assembly of this embodiment has a housing 20, in which an oil fume extraction fan 23 is provided. An exhaust passage 21 and an air outlet passage 22 are provided on the upper portion of the housing 20. Along the direction of oil fume flow, the exhaust passage 21 is provided downstream of the air outlet of the oil fume extraction fan 26. Figure 3 The direction indicated by the middle arrow A is right, and the air outlet channel 22 is located on the left side of the smoke exhaust channel 21. In this embodiment, the compressor 31 is integrated into the housing 20, and the compressor 31 is located on the left side of the range fumes exhaust fan 23 and below the air outlet channel 22.

[0069] The smoke exhaust channel 21 of this embodiment includes a first smoke exhaust channel 211 and a second smoke exhaust channel 212. A switching valve 24 is installed at the entrance of the first smoke exhaust channel 211 and the second smoke exhaust channel 212 to switch one of the first smoke exhaust channel 211 and the second smoke exhaust channel 212 to be connected to the air outlet of the range fumes exhaust fan 23. Figure 3 As shown, the switching valve 24 is in a rightward deflection state, at which time the first smoke exhaust channel 211 is opened and the second smoke exhaust channel 212 is closed, and the smoke is discharged outward through the first smoke exhaust channel 211. When the second smoke exhaust channel 212 needs to be opened, the switching valve 24 is deflected to the left.

[0070] In this embodiment, a condenser 32 and an oil fume purification device 25 are installed within the first exhaust duct 211. The oil fume purification device 25 is positioned upstream of the condenser 32 along the direction of oil fume flow, thereby preventing oil fume from contaminating the condenser 32. Typically, the oil fume purification device 25 can employ an electrostatic purification device known in the art, and its specific structure will not be described in detail. Furthermore, the condenser 32 can be positioned at an angle or vertically relative to a vertical plane. In this embodiment, the condenser 32 is tilted diagonally to the left from top to bottom.

[0071] An air conditioner indoor unit 200 is mounted within the housing 20. Housing 20 is provided with an air inlet 27 and an air outlet 28 for an air outlet duct 22. Air inlet 27 of outlet duct 22 serves as the air inlet for indoor unit 200 and can be connected to either the kitchen or the outdoors. Air outlet 28 of outlet duct 22 serves as the air outlet for indoor unit 200 and can be located on the front or top of housing 20. When the air outlet is located on the front of housing 20, conditioned air flows directly from the air outlet into the kitchen. When the air outlet is located on the top of housing 20, the air outlet communicates with the kitchen via an air duct (not shown). An evaporator 33 and an indoor unit fan 26 are mounted within the indoor unit. The indoor unit fan 26 serves as the air outlet fan and is located downstream of the evaporator 33 in the direction of air flow. The indoor fan 26 is generally a centrifugal fan, and the air inlet of the centrifugal fan faces the evaporator 33. In addition, to purify the air, a filter (not shown) can be installed at the air inlet of the air conditioner indoor unit. The filter purifies the air entering the indoor unit, so that clean air is blown out of the air inlet of the air conditioner indoor unit, improving the user experience.

[0072] The air-conditioning range hood installs the water box 1 in the casing 20, wherein the second water box 12 is located directly below the evaporator 33. When the air conditioner is working, condensed water condenses on the surface of the evaporator 33 and the condensed water can flow into the interior of the second water box 12.

[0073] In this embodiment, a liquid distributor 6 is installed in the first smoke exhaust channel 211. Along the flow direction of the oil smoke, the liquid distributor 6 is located downstream of the condenser 32. The liquid distributor 6 is strip-shaped and arranged horizontally along the upper edge of the condenser 32. The water outlet of the water pump 17 of the water box 1 is connected to the water inlet 61 of the liquid distributor 6 through the water outlet pipe 7. The water outlets 62 of the liquid distributor 6 are evenly spaced along the length direction of the liquid distributor 6. Figure 4 , so that the condensed water can flow evenly to the condenser 32.

[0074] When the water pump 17 is working, the condensed water in the water box 1 can flow evenly to the surface of the condenser 32 through the liquid distributor 6. When the air conditioner is in operation, the surface of the condenser 32 is hot. When the condensed water flows through the surface of the condenser 32, it can cool the condenser 32, improve the heat exchange effect of the condenser, and thus help improve the energy efficiency of the air conditioner. If the water outlet speed of the liquid distributor 6 is too fast, after the condensed water flows through the surface of the condenser 32, some of the condensed water will flow downward along the surface of the condenser. Therefore, in this embodiment, a water receiving box 4 is installed below the condenser 32. The water receiving box 4 receives the condensed water flowing down from the surface of the condenser 32. In addition, the water outlet of the water receiving box 4 is connected to the first water box 11 through the return pipe 5. In this embodiment, the water receiving box 4 is higher than the first water box 11. Therefore, the condensed water in the water receiving box 4 can flow back to the first water box 11, thereby realizing the reuse of the condensed water. If the position of the water receiving box 4 is lower than the first water box 11 , a water pump is required to transport the condensed water in the water receiving box 4 to the first water box 11 .

[0075] The liquid distributor 6 is only one of the drainage methods for condensed water. In addition, other drainage methods such as the atomizer 8 can also be used. Figure 6 As shown, the atomizer 8 is installed in the first smoke exhaust channel 211, and the water outlet of the water pump 17 is connected to the water inlet of the atomizer 8 through the water outlet pipe 7. The condensed water atomized by the atomizer 8 is sprayed from the spray port of the atomizer to the surface of the condenser 32 to cool the condenser 32. At the same time, driven by the oil smoke airflow, the atomized condensed water can also be discharged with the oil smoke. The atomizer 8 can adopt various atomizers in the prior art, and the specific structure will not be described in detail. The water mist particles generated by the atomizer 8 during atomization are small and not easy to condense. Since the water channel is closed, the water mist will not splash around during atomization. In addition, it can also be connected to components such as the water inlet pipe, water tank, and circulating water pump to achieve long-term operation.

[0076] A controller (not shown) is installed on the control panel of the air-conditioning range hood. The controller can determine the status of the first float switch and the second float switch to control the status of the valve 16, the water pump 17, and the liquid distributor 6, thereby realizing intelligent control of drainage.

[0077] The working principle of the air-conditioning range hood is as follows:

[0078] With both the range hood and the air conditioner turned on, the switching valve 24 opens the first exhaust passage 211, allowing the fumes to be discharged through the first exhaust passage 211. Furthermore, the fumes flow across the surface of the condenser 32, cooling and dissipating the heat there. This lowers the temperature of the refrigerant flowing through the condenser 32, thereby improving the heat exchange efficiency of the condenser 32 and, in turn, the energy efficiency of the air conditioner. Simultaneously, the indoor fan 26 delivers cool air into the kitchen from the air outlet 28.

[0079] Only the range hood is turned on, and the second smoke exhaust channel 212 is opened by switching the switching valve 24 , and the oil smoke is exhausted through the second smoke exhaust channel 212 .

[0080] In addition, the oil fume extraction component of the present invention is not limited to the structure of installing the oil fume extraction fan inside the casing. The oil fume extraction component can also adopt a non-powered structure, that is, the oil fume extraction component only retains the smoke collecting shell, and the oil fume extraction fan is placed outside the casing. For example, the oil fume extraction fan can be installed on the top of the public flue of the building.

[0081] like Figure 8 As shown, the control method of the air-conditioning range hood of this embodiment includes the following steps:

[0082] S1, start;

[0083] S2, determining whether the air conditioner is turned on;

[0084] If yes, proceed to step S3;

[0085] If not, the range hood is turned on and the process proceeds to step S10;

[0086] S3, the water pump is turned on, the liquid distributor is working, and the valve is normally closed;

[0087] S4, determining whether the first float switch is activated;

[0088] If yes, proceed to step S5;

[0089] If not, the air conditioner continues to operate and then enters step S10;

[0090] S5: The air conditioner stops, the indoor fan continues to work, air is supplied normally, and the liquid distributor works;

[0091] S6, determining whether the first float switch is disconnected for a set time of t minutes;

[0092] If yes, proceed to step S7;

[0093] If not, return to step S5;

[0094] S7, valve opens;

[0095] S8, determining whether the second float switch is disconnected;

[0096] If yes, proceed to step S9;

[0097] If not, return to step S7;

[0098] S9, air conditioning is turned on and the valve is closed;

[0099] S10, determining whether the air conditioner is turned off;

[0100] If yes, proceed to step S11;

[0101] If not, return to step S3;

[0102] S11: The air conditioner stops, the indoor fan continues to work, air is supplied normally, the liquid distributor works, and the valve is open;

[0103] S12, determining whether the second float switch is disconnected;

[0104] If yes, proceed to step S13;

[0105] If not, return to step S11;

[0106] S13, end.

[0107] The set time t in step S6 satisfies: t=1-10, preferably 3 minutes.

[0108] The above-described drainage control method demonstrates that, when the air-conditioning range hood enters the air-conditioning startup mode, condensed water condensed on the surface of the evaporator 33 flows into the second water box 12 of the water box 1. The condensed water in the second water box 12 then flows into the third water box 13 through the second water outlet 121 at a steady flow rate. This flow rate matches the water output of the liquid distributor 6 and is less than the maximum flow rate of the water pump 17. The water pump 17 operates continuously from the time the air conditioner is turned on. When air humidity is high, a large amount of condensed water is generated. The water pump 17 pumps all the instantaneous condensed water into the liquid distributor, which in turn transfers the condensed water to the surface of the condenser 32, further cooling and dissipating the heat there, thereby enhancing its heat exchange efficiency. Furthermore, the condensed water output by the water pump 17 exceeds the processing capacity of the liquid distributor 6. The excess condensed water flows into the water receiving box 4 and then back to the first water box 11 for reuse.

[0109] Normally, valve 16 is in a closed state until the first water box 11 and the second water box 12 are full of water, the first float switch 14 is closed, valve 16 is opened, the air conditioner is shut down, and the indoor unit is in pure air supply mode until there is no water in the first water box 11 and the air conditioner is restarted.

[0110] If the first float switch 14 has not been activated before the user actively turns off the air conditioner, after the user actively turns off the air conditioner, the indoor unit starts the pure air supply mode and the water pump 17 continues to run until the liquid distributor 6 has processed all the condensed water and the entire machine is shut down.

Claims

1. An air-conditioning range hood, comprising a housing (20) and an air conditioning assembly mounted inside the housing, wherein the housing (20) is provided with a smoke exhaust passage (21) and an air outlet passage (22) isolated from each other, the air conditioning assembly comprising a compressor (31), a condenser (32) and an evaporator (33), wherein the compressor (31), the condenser (32) and the evaporator (33) are connected via a refrigerant pipeline (34), and wherein: A water box (1) is installed in the housing (20), and the water box (1) includes a first water box (11), a second water box (12) and a third water box (13) which are adjacent to each other in sequence. The second water box (12) is located between the first water box (11) and the third water box (13). The bottom of the second water box (12) is lower than the bottom of the first water box (11). The bottom of the third water box (13) is lower than the bottom of the second water box (12). A first float switch (14) is installed on the top of the second water box (12). A second float switch (15) is installed on the inner bottom of the second water box (12). A first water outlet (111) is opened at the lower part of the first water box (11) and is connected to the second water box (12). The first water outlet (111) is located above the second float switch (15). A valve (16) is installed on the first water outlet (111). The lower part of the second water box (12) is provided with a second water outlet (121) connected to the third water box (13). The third water box (13) is internally provided with a water pump (17) for pumping water out of the third water box (13). The condensed water condensed on the evaporator (33) can directly fall into the second water box (12). The condenser (32) is arranged in the smoke exhaust channel (21). The condensed water in the third water box (13) is transported to the condenser (32) by the water pump (17). When the first water box (11) and the second water box (12) are full of water, the first float switch (14) is closed, the valve (16) is turned from the closed state to the open state, the air conditioner is stopped, and the indoor unit is in the pure air supply mode until there is no water in the first water box (11) and the air conditioner is restarted.

2. The air-conditioning type range hood according to claim 1, characterized in that: When the second water box (12) is filled with water, the first float switch (14) is closed.

3. The air-conditioning type range hood according to claim 1, characterized in that: When the water in the first water box (11) is full, it can overflow into the second water box (12), and the height of the overflow port of the first water box (11) is not lower than the water level of the second water box (12) corresponding to the closed state of the first float switch (14).

4. The air-conditioning type range hood according to claim 1, characterized in that: A water receiving box (4) is provided below the condenser (32), and a water outlet of the water receiving box (4) is connected to the first water box (11) via a return water pipe (5).

5. The air-conditioning type range hood according to claim 1, characterized in that: A liquid distributor (6) is installed in the smoke exhaust channel (21), and the water outlet of the water pump (17) is connected to the water inlet of the liquid distributor (6) through the water outlet pipe (7), so that the condensed water flowing out of the water outlet of the liquid distributor (6) can flow to the surface of the condenser (32).

6. The air-conditioning type range hood according to claim 1, characterized in that: An atomizer (8) is installed in the smoke exhaust channel (21), and the water outlet of the water pump (17) is connected to the water inlet of the atomizer (8) through the water outlet pipe (7). The condensed water atomized by the atomizer (8) is sprayed from the spray port of the atomizer onto the surface of the condenser (32).

7. The air-conditioning type range hood according to claim 1, characterized in that: An oil fume exhaust fan (23) is installed inside the casing (20). The exhaust passage (21) is arranged downstream of the oil fume exhaust fan (23) along the flow direction of the oil fume. The exhaust passage (21) includes a first exhaust passage (211) and a second exhaust passage (212). A switching valve (24) is installed at the outlet of the oil fume exhaust fan (23) for switching one of the first exhaust passage (211) and the second exhaust passage (212) to be connected to the outlet of the oil fume exhaust fan (23). The condenser (32) is arranged in the first exhaust passage (211).

8. The air-conditioning type range hood according to claim 7, characterized in that: An oil fume purification device (25) is installed in the first smoke exhaust channel (211), and along the flow direction of the oil fume, the oil fume purification device (25) is arranged upstream of the condenser (32).

9. The air-conditioning type range hood according to claim 1, characterized in that: An air inlet (27) and an air outlet (28) of the air outlet channel (22) are provided on the housing (20), an internal fan (26) for blowing air toward the air outlet is installed in the air outlet channel (22), and the internal fan (26) is located downstream of the evaporator (33) along the direction of gas flow.

10. The air-conditioning type range hood according to claim 1, characterized in that: A throttling device is installed on the refrigerant pipeline between the condenser (32) and the evaporator (33).

11. The air-conditioning type range hood according to claim 1, characterized in that: The compressor (31) is installed inside the casing (20).

12. A control method for an air-conditioning range hood, applied to the air-conditioning range hood according to claim 5, wherein an internal fan (26) is installed in the air outlet channel (22), characterized in that The steps include: S1, start; S2, determining whether the air conditioner is turned on; If yes, proceed to step S3; If not, the range hood is turned on and the process proceeds to step S10; S3, the water pump is turned on, the liquid distributor is working, and the valve is normally closed; S4, determining whether the first float switch is activated; If yes, proceed to step S5; If not, the air conditioner continues to operate and then enters step S10; S5: The air conditioner stops, the indoor fan continues to work, air is supplied normally, and the liquid distributor works; S6, determining whether the first float switch is disconnected for a set time of t minutes; If yes, proceed to step S7; If not, return to step S5; S7, valve opens; S8, determining whether the second float switch is disconnected; If yes, proceed to step S9; If not, return to step S7; S9, air conditioning is turned on and the valve is closed; S10, determining whether the air conditioner is turned off; If yes, proceed to step S11; If not, return to step S3; S11: The air conditioner stops, the indoor fan continues to work, air is supplied normally, the liquid distributor works, and the valve is open; S12, determining whether the second float switch is disconnected; If yes, proceed to step S13; If not, return to step S11; S13, end.

13. The control method of the air-conditioning range hood according to claim 12, characterized in that: The set time t in step S6 satisfies: t= 1~10.

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