Air-conditioning type range hood and drainage control method thereof

Abstract

An air-conditioning range hood and a drainage control method thereof, comprising a housing and an air-conditioning system, wherein a mutually isolated smoke exhaust channel and an air outlet channel are arranged in the housing, a condenser is arranged in the smoke exhaust channel, an evaporator is arranged in the air outlet channel, a drainage device in the housing comprises a water tank, a water pump, a water level sensor, a drainage pipe and a drainage terminal, the water tank is used to collect condensed water, a water inlet end of the drainage pipe is connected to a water outlet of the water pump, the drainage terminal is installed in the smoke exhaust channel and is connected to a water outlet end of the drainage pipe, and a controller controls the water pump and the air-conditioning system accordingly by reading an output signal of the water level sensor. The condensed water generated when the air-conditioning range hood is working can be discharged into the smoke exhaust channel through the drainage device, so that the condensed water can be discharged smoothly. The drainage control method of the range hood is suitable for complex environments, can accurately control the discharge of condensed water from the kitchen range hood, and can well control and remind users to maintain and clean the condensed water when there are many impurities in the condensed water, so as to prevent the blockage of the water pipe or the water pump.

Description

Technical Field

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

[0002] In order to cool the kitchen air in summer and provide warm air to the kitchen in winter, people have invented various kitchen air conditioners. At present, there are products such as air conditioner hoods on the market, that is, air conditioner components are added on the basis of the range hood platform, which can realize all the functions of the range hood and the function of the air conditioner at the same time. However, these air conditioner hoods often simply merge the indoor unit of the traditional air conditioner with the traditional range hood, and the outdoor unit of the air conditioner still needs to be installed separately outdoors. The integration of this type of air conditioner range hood is not enough and the installation is relatively cumbersome. In addition, during the use of the air conditioner hood, the evaporator of the air conditioner will produce condensed water, some of which are directly discharged outdoors through the drain pipe, and some use a water pump and atomizing motor to atomize the condensed water and discharge it through the flue outlet. However, the current drainage method is more commonly used and common, but it cannot be directly applied to the air conditioner range hood. The difference between the air conditioner condensed water and the air conditioner range hood condensed water is that the kitchen environment is complex. With the increase of use time, the impurities in the water will increase, which will affect the work of the water pump and cause the water pipe to be blocked. The pressure of the same water level detected by the pressure difference method is also different from that of pure water. The condensed water of air-conditioning range hoods contains more impurities and has high requirements for drainage devices and methods. The current water level detection and drainage devices cannot accurately control the drainage, nor can they remind users to perform maintenance and cleaning, and cannot be directly applied to air-conditioning range hoods. Summary of the invention

[0003] The first technical problem to be solved by the present invention is to provide an air-conditioning type range hood capable of effectively controlling the discharge of condensed water according to the amount of condensed water in response to the above-mentioned existing technical status.

[0004] The second technical problem to be solved by the present invention is to provide a drainage control method that can achieve precise control when there are many impurities in the condensed water and remind the user to maintain and clean the water in response to the above-mentioned existing technical status.

[0005] The technical solution adopted by the present invention to solve the first technical problem mentioned above is: the air-conditioned range hood comprises a casing and an air-conditioning system, the casing is provided with a smoke exhaust channel and an air outlet channel isolated from each other, the air-conditioning system comprises a compressor, a condenser and an evaporator, the compressor, condenser and evaporator are connected by a refrigerant pipeline, the condenser is arranged in the smoke exhaust channel, and the evaporator is arranged in the air outlet channel, characterized in that: a drainage device is installed in the casing, the drainage device comprises a water tank, a water pump, a water level sensor, a drain pipe and a drainage terminal, the water tank is used to collect condensed water condensed on the evaporator, the water pump is installed inside the water tank, the water inlet end of the drain pipe is connected with the water outlet of the water pump, the drainage terminal is installed in the smoke exhaust channel and connected with the water outlet end of the drain pipe, the water level sensor is used to sense the water level in the water tank, and also includes a controller that controls the water pump and the air-conditioning system accordingly by reading the output signal of the water level sensor.

[0006] As a preferred solution, the drainage terminal is a liquid distributor, the water inlet end of the liquid distributor is connected to the water outlet end of the drainage pipe, the water outlet end of the liquid distributor is adjacent to the upper side of the condenser, and the condensed water flowing out of the water outlet end of the liquid distributor can flow to the surface of the condenser and can flow downward along the surface of the condenser. In this way, on the one hand, the condenser is further cooled, the heat exchange effect of the condenser is further improved, and the air conditioning energy efficiency is improved, and the effective use of condensed water is achieved. On the other hand, the condensed water can be evaporated after being heated by the condenser and discharged from the smoke exhaust channel, eliminating the condensed water discharge device.

[0007] As another preferred solution, the drainage terminal is an atomizer, and the water inlet end of the atomizer is connected to the water outlet end of the drainage pipe. In this way, after the condensed water is atomized by the atomizer, it is discharged from the smoke exhaust channel driven by the flue gas flow.

[0008] Preferably, along the flow direction of the oil smoke, the drainage terminal is arranged downstream of the condenser.

[0009] Further preferably, the condenser and the evaporator are both arranged to be inclined relative to the vertical plane.

[0010] More preferably, the smoke exhaust channel includes a first smoke exhaust channel and a second smoke exhaust channel which are independent of each other, and the condenser is arranged in the first smoke exhaust channel. In this way, the range hood forms a dual-channel smoke exhaust structure, and different smoke exhaust channels can be selected for smoke exhaust in different working modes.

[0011] In order to make the internal structure layout of the casing more reasonable, a fume suction fan is installed in the casing. Along the flow direction of the fume, the smoke exhaust channel is arranged downstream of the air outlet of the fume suction fan. The smoke exhaust channel and the air outlet channel are both arranged above the fume suction fan, and the smoke exhaust channel and the air outlet channel are arranged adjacent to each other on the left and right.

[0012] The compressor can be in a plurality of different positions. Preferably, the compressor is installed inside the casing, and the compressor is located outside the smoke exhaust passage and the air outlet passage.

[0013] The technical solution adopted by the present invention to solve the second technical problem is: the drainage control method of the air-conditioning type range hood is characterized by comprising the following steps:

[0014] 1) Start;

[0015] 2) Test before leaving the factory and store the transmission values ​​A1, A2, A3 corresponding to different water levels inside the water tank;

[0016] 3) The controller reads A1, A2, A3;

[0017] 4) Determine whether there are other stored values ​​in the storage medium;

[0018] If yes, go to step 5).

[0019] If not, go to step 6);

[0020] 5) 5.1. Start timing;

[0021] 5.2. Read A1(n-1);

[0022] 5.3. Obtain the transmission value A;

[0023] 5.4. Calculate the ratio n = A1(n-1) / A1;

[0024] 5.5. Calculate A2(n-1)=n×A2;

[0025] 5.6. Calculate A3(n-1)=n×A3;

[0026] 5.7. Determine whether A is greater than or equal to A3(n-1);

[0027] If yes, turn off the air conditioning system and proceed to step 7);

[0028] If not, proceed to step 5.8;

[0029] 5.8. Determine whether A is greater than or equal to A2(n-1);

[0030] If yes, turn on the water pump and then go to step 7);

[0031] If not, proceed to step 5.9;

[0032] 5.9. Determine whether A is greater than or equal to A1(n-1);

[0033] If yes, read the water pump current I and then go to step 5.10;

[0034] If not, proceed to step 7);

[0035] 5.10. Determine whether the water pump current I is equal to the water pump idling current;

[0036] If yes, then record the transmission value A at this time as A1n and go to step 5.11;

[0037] If not, proceed to step 5.13;

[0038] 5.11. Determine whether the set time has arrived;

[0039] If yes, then A1n is stored in the storage medium and A1(n-1) is erased, and then the process goes to step 5.12; if no, then the process goes to step 5.13;

[0040] 5.12. Timer reset;

[0041] 5.13. Turn off the water pump and proceed to step 7);

[0042] 6) 6.1. Obtain the transmission value A;

[0043] 6.2. Determine whether A is greater than A3;

[0044] If yes, turn off the air conditioning system and proceed to step 7);

[0045] If not, proceed to step 6.3;

[0046] 6.3. Determine whether A is greater than or equal to A2;

[0047] If yes, turn on the water pump and then go to step 7);

[0048] If not, proceed to step 6.4;

[0049] 6.4. Determine whether A is greater than or equal to A1;

[0050] If yes, turn off the water pump and go to step 6.5;

[0051] If not, proceed to step 7);

[0052] 6.5. Read the water pump current I;

[0053] 6.6. Determine whether the water pump current I is equal to the water pump idling current;

[0054] If yes, then record the transmission value A at this time as A11, and then go to step 6.7;

[0055] If not, proceed to step 7);

[0056] 6.7. Store A11 into a storage medium and then proceed to step 7);

[0057] 7) End and return to step 1).

[0058] More preferably, the step 2) comprises the following steps:

[0059] 2.1. Start;

[0060] 2.2. Pour water into the water tank;

[0061] 2.3, water level reaches h1;

[0062] 2.4. Read the transmission value A at this time, recorded as A1;

[0063] 2.5. Store A1 into storage medium;

[0064] 2.6, water level reaches h2;

[0065] 2.7. Read the transmission value A at this time, recorded as A2;

[0066] 2.8. Store A2 into storage medium;

[0067] 2.9, water level reaches h3;

[0068] 2.10. Read the transmission value A at this time, recorded as A3;

[0069] 2.11. Store A3 in storage medium;

[0070] 2.12. Pour out the water in the water tank and wipe it dry;

[0071] 2.13. End.

[0072] The technical solution adopted by the present invention to solve the second technical problem is: the drainage control method of the air-conditioning type range hood is characterized by comprising the following steps:

[0073] 1) Start;

[0074] 2) Test before leaving the factory and store the transmission values ​​A1, A2, A3 corresponding to different water levels inside the water tank;

[0075] 3) The controller reads A1, A2, A3;

[0076] 4) Determine whether there are other stored values ​​in the storage medium;

[0077] If yes, go to step 5).

[0078] If not, go to step 6);

[0079] 5) 5.1. Start timing;

[0080] 5.2. Read A1(n-1);

[0081] 5.3. Obtain the transmission value A;

[0082] 5.4. Calculate the ratio n = A1(n-1) / A1;

[0083] 5.5. Calculate A2(n-1)=n×A2;

[0084] 5.6. Calculate A3(n-1)=n×A3;

[0085] 5.7. Determine whether A is greater than or equal to A3(n-1);

[0086] If yes, turn off the air conditioning system and proceed to step 7);

[0087] If not, proceed to step 5.8;

[0088] 5.8. Determine whether A is greater than or equal to A2(n-1);

[0089] If yes, turn on the water pump and atomizer, and then go to step 7);

[0090] If not, proceed to step 5.9;

[0091] 5.9. Determine whether A is greater than or equal to A1(n-1);

[0092] If yes, read the water pump current I and then go to step 5.10;

[0093] If not, proceed to step 7);

[0094] 5.10. Determine whether the water pump current I is equal to the water pump idling current;

[0095] If yes, then record the transmission value A at this time as A1n and go to step 5.11;

[0096] If not, proceed to step 5.13;

[0097] 5.11. Determine whether the set time has arrived;

[0098] If yes, then A1n is stored in the storage medium and A1(n-1) is erased, and then the process goes to step 5.12;

[0099] If not, proceed to step 5.13;

[0100] 5.12. Timer reset;

[0101] 5.13. Turn off the water pump and atomizer, and then proceed to step 7);

[0102] 6) 6.1. Obtain the transmission value A;

[0103] 6.2. Determine whether A is greater than A3;

[0104] If yes, turn off the air conditioning system and proceed to step 7);

[0105] If not, proceed to step 6.3;

[0106] 6.3. Determine whether A is greater than or equal to A2;

[0107] If yes, turn on the water pump and atomizer, and then go to step 7);

[0108] If not, proceed to step 6.4;

[0109] 6.4. Determine whether A is greater than or equal to A1;

[0110] If yes, turn off the water pump and go to step 6.5;

[0111] If not, proceed to step 7);

[0112] 6.5. Read the water pump current I;

[0113] 6.6. Determine whether the water pump current I is equal to the water pump idling current;

[0114] If yes, then record the transmission value A at this time as A11, and then go to step 6.7;

[0115] If not, proceed to step 7);

[0116] 6.7. Store A11 into a storage medium and then proceed to step 7);

[0117] 7) End and return to step 1).

[0118] Compared with the prior art, the advantages of the present invention are: the condensed water generated when the air-conditioned range hood is working can be discharged into the smoke exhaust channel through the drainage device, so that the condensed water can be discharged smoothly, and the discharge of the condensed water can be controlled by controlling the water pump and the air-conditioning system according to the amount of condensed water. In addition, the drainage control method of the range hood is suitable for complex environments, can accurately control the discharge of condensed water of the kitchen range hood, and can also well control and remind users to maintain and clean when there are many impurities in the condensed water, and can prevent blockage of water pipes or water pumps. BRIEF DESCRIPTION OF THE DRAWINGS

[0119] Figure 1 This is a schematic structural diagram of a range hood according to Embodiment 1 of the present invention;

[0120] Figure 2 This is a schematic diagram of the structure of a drainage device according to Embodiment 1 of the present invention;

[0121] Figure 3 This is a working principle diagram of the air conditioning system according to the first embodiment of the present invention;

[0122] Figure 4 This is a flow chart of a drainage control method according to Embodiment 1 of the present invention;

[0123] Figure 5 This is a flow chart of storing transmission values ​​A1, A2, A3 according to the first embodiment of the present invention;

[0124] Figure 6 This is a schematic structural diagram of a range hood according to a second embodiment of the present invention;

[0125] Figure 7 This is a flow chart of a drainage control method according to a second embodiment of the present invention. DETAILED DESCRIPTION

[0126] The present invention is further described in detail below with reference to the accompanying drawings.

[0127] Embodiment 1:

[0128] like Figures 1 to 3 As shown, the air-conditioning range hood of this embodiment includes a housing 20 and an air-conditioning system, wherein the air-conditioning system includes a compressor 11, a condenser 12 and an evaporator 13, the compressor 11, the condenser 12 and the evaporator 13 are connected through a refrigerant pipeline 14, and a throttling device 15 is installed on the refrigerant pipeline 14 between the condenser 12 and the evaporator 13. A refrigerant flows through the refrigerant pipeline 14, and common refrigerants can be water, ethylene glycol or glycerol, etc. The specific working principle of the air-conditioning system is the same as that of the existing air-conditioning, and will not be described in detail here.

[0129] A fume extractor fan 23 is installed at the lower part of the housing 20, and a fume exhaust passage 21 and an air outlet passage 22 are provided at the upper part of the housing 20. Along the flow direction of the fume, the fume exhaust passage 21 is provided downstream of the air outlet of the fume extractor fan 23. Figure 1 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 .

[0130] The housing 20 is provided with an air inlet and an air outlet of the air outlet passage 22. The air inlet can be connected to the kitchen or to the outside. The air outlet can be arranged on the front of the housing 20 or on the top of the housing 20. When the air outlet is arranged on the front of the housing 20, the air conditioning air blows directly from the air outlet to the kitchen. When the air outlet is arranged on the top of the housing 20, the air outlet is connected to the kitchen through an air duct (not shown in the figure). The evaporator 13 and the internal fan 24 are installed in the air outlet passage 22. The evaporator 13 is arranged to be inclined relative to the vertical plane. The internal fan 24 is the air outlet fan. Along the gas flow direction, the internal fan 24 is located downstream of the evaporator 13.

[0131] In this embodiment, the compressor 11 is installed inside the casing 20 , and the compressor 11 is located outside the smoke exhaust passage 21 and the air outlet passage 2 . Specifically, the compressor 11 is located on the left side of the range fumes suction fan 23 and below the air outlet passage 22 .

[0132] The smoke exhaust channel 21 of this embodiment includes a first smoke exhaust channel 211 and a second smoke exhaust channel 212. A duct switching valve (not shown in the figure) 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 fume exhaust fan 23. The condenser 12 is installed in the first smoke exhaust channel 211, and the condenser 12 is inclined relative to the vertical plane. In addition, in order to prevent the fume from contaminating the condenser 12, an oil fume purification device (not shown in the figure) is also installed in the first smoke exhaust channel 211, and the oil fume purification device is located upstream of the condenser 12.

[0133] A drainage device 3 is installed in the housing 20, and the drainage device 3 includes a water tank 31, a water pump 32, a water level sensor 33, a drainage pipe 34 and a liquid distributor 35. The liquid distributor 35 constitutes the drainage terminal of this embodiment. The water tank 31 is used to collect condensed water condensed on the evaporator 13, the water pump 32 is installed inside the water tank 31, the water level sensor 33 is installed on the water tank 31, the water inlet end of the drainage pipe 34 is connected to the water outlet of the water pump 32, the liquid distributor 35 is installed in the smoke exhaust channel 21, the water inlet end of the liquid distributor 35 is connected to the water outlet end of the drainage pipe 34, the water outlet end of the liquid distributor 35 is adjacent to the upper side of the condenser 12, and the condensed water flowing out of the water outlet end of the liquid distributor 35 can flow to the surface of the condenser 12 and can flow downward along the surface of the condenser 12, and the liquid distributor 35 is located downstream of the condenser 12 along the flow direction of the oil smoke. The water level sensor 33 is used to sense the water level in the water tank 31, and the controller (not shown) controls the water pump 32 accordingly by reading the output signal of the water level sensor 33. In addition, the controller can also be used to control the compressor 11 to turn the air conditioning system on or off. Thus, the discharge of condensed water can be controlled by controlling the water pump and the air conditioning system according to the amount of condensed water.

[0134] The working principle of the air-conditioning range hood is as follows:

[0135] The range hood and the air conditioner are both turned on. In the cooling mode, the oil smoke is discharged to the outside through the first smoke exhaust channel 211. In addition, the oil smoke airflow passing over the surface of the condenser 12 can cool down and dissipate the heat of the condenser 12, reduce the temperature of the refrigerant flowing through the condenser 12, thereby improving the heat exchange effect of the condenser 12 and further improving the energy efficiency of the air conditioner. At the same time, under the action of the indoor fan 24, the cold air is sent into the kitchen room from the air outlet. The condensed water generated by the evaporator 13 flows into the liquid distributor 35 through the drain pipe 34. The condensed water flowing out of the water outlet of the liquid distributor 35 can flow to the surface of the condenser 12 and can flow downward along the surface of the condenser 12. On the one hand, the condenser 12 is further cooled, the heat exchange effect of the condenser 12 is further improved, and the effective use of the condensed water is realized. On the other hand, the condensed water can be heated by the condenser 12 and evaporated and then discharged from the first smoke exhaust channel 211, eliminating the condensed water discharge device.

[0136] Only the range hood is turned on, and the oil smoke is discharged to the outside through the second smoke exhaust channel 212.

[0137] 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.

[0138] The present invention adopts the following control method to achieve the purpose of accurately controlling the discharge amount of condensed water even if the impurities in the water increase, and reminding the user to clean.

[0139] like Figure 4 As shown, the drainage control method of the air-conditioning type range hood of this embodiment includes the following steps:

[0140] 1) Start;

[0141] 2) Test before leaving the factory and store the transmission values ​​A1, A2, A3 corresponding to different water levels inside the water tank;

[0142] 3) The controller reads A1, A2, A3;

[0143] 4) Determine whether there are other stored values ​​in the storage medium;

[0144] If yes, go to step 5).

[0145] If not, go to step 6);

[0146] 5) 5.1. Start timing;

[0147] 5.2. Read A1(n-1);

[0148] 5.3. Obtain the transmission value A;

[0149] 5.4. Calculate the ratio n = A1(n-1) / A1;

[0150] 5.5. Calculate A2(n-1)=n×A2;

[0151] 5.6. Calculate A3(n-1)=n×A3;

[0152] 5.7. Determine whether A is greater than or equal to A3(n-1);

[0153] If yes, turn off the air conditioning system and proceed to step 7);

[0154] If not, proceed to step 5.8;

[0155] 5.8. Determine whether A is greater than or equal to A2(n-1);

[0156] If yes, turn on the water pump and then go to step 7);

[0157] If not, proceed to step 5.9;

[0158] 5.9. Determine whether A is greater than or equal to A1(n-1);

[0159] If yes, read the water pump current I and then go to step 5.10;

[0160] If not, proceed to step 7);

[0161] 5.10. Determine whether the water pump current I is equal to the water pump idling current;

[0162] If yes, then record the transmission value A at this time as A1n and go to step 5.11;

[0163] If not, proceed to step 5.13;

[0164] 5.11. Determine whether the set time has arrived;

[0165] If yes, then A1n is stored in the storage medium and A1(n-1) is erased, and then the process goes to step 5.12; if no, then the process goes to step 5.13;

[0166] 5.12. Timer reset;

[0167] 5.13. Turn off the water pump and proceed to step 7);

[0168] 6) 6.1. Obtain the transmission value A;

[0169] 6.2. Determine whether A is greater than A3;

[0170] If yes, turn off the air conditioning system and proceed to step 7);

[0171] If not, proceed to step 6.3;

[0172] 6.3. Determine whether A is greater than or equal to A2;

[0173] If yes, turn on the water pump and then go to step 7);

[0174] If not, proceed to step 6.4;

[0175] 6.4. Determine whether A is greater than or equal to A1;

[0176] If yes, turn off the water pump and go to step 6.5;

[0177] If not, proceed to step 7);

[0178] 6.5. Read the water pump current I;

[0179] 6.6. Determine whether the water pump current I is equal to the water pump idling current;

[0180] If yes, then record the transmission value A at this time as A11, and then go to step 6.7;

[0181] If not, proceed to step 7);

[0182] 6.7. Store A11 into a storage medium and then proceed to step 7);

[0183] 7) End and return to step 1).

[0184] Among them, in step 5.11, the set time can be set to 1 hour to 2 hours.

[0185] In step 6.6, the first "1" in the transmission value A11 indicates that the water level is at h1, and the second "1" indicates the first time it reaches this water level.

[0186] like Figure 5 As shown, the above step 2) comprises the following steps:

[0187] 2.1. Start;

[0188] 2.2. Pour water into the water tank;

[0189] 2.3, water level reaches h1;

[0190] 2.4. Read the transmission value A at this time, recorded as A1;

[0191] 2.5. Store A1 into storage medium;

[0192] 2.6, water level reaches h2;

[0193] 2.7. Read the transmission value A at this time, recorded as A2;

[0194] 2.8. Store A2 into storage medium;

[0195] 2.9, water level reaches h3;

[0196] 2.10. Read the transmission value A at this time, recorded as A3;

[0197] 2.11. Store A3 in storage medium;

[0198] 2.12. Pour out the water in the water tank;

[0199] 2.13. End.

[0200] Among them, in step 2.12, after pouring out the water in the water tank, it is best to wipe the water tank dry.

[0201] The above control method is described in detail as follows:

[0202] The water level sensor 33 uses the differential pressure method to detect the water pressure in the water tank 31. When the water level in the water tank 31 reaches h2, the water level sensor 33 detects an electrical signal and transmits the signal to the main control MCU, i.e., the controller. The main control MCU will turn on the water pump 32 and detect the current of the water pump 32 at the same time. When the water in the water tank 31 is full, the water level is H3, the water level sensor 33 detects an electrical signal and transmits the signal to the main control MCU, and the main control MCU will shut down the air conditioning system, even if the compressor 11 stops working, to prevent excessive condensed water from overflowing the water tank 31. When the water in the water tank 31 is pumped out, that is, the water level is just below the water inlet of the water pump 32, the water pump 32 is idling at this time, and the idling current I1 of the water pump 32 is detected. At this time, the water level is h1, the water level sensor 33 detects an electrical signal and transmits the signal to the main control MCU, and the main control MCU will shut down the water pump 32. And record the transmission values ​​A1, A2, A3 corresponding to the first use of water level h1, h2, h3, and store them in the storage medium, which can be the Eeprom built into the MCU, or an external Eeprom or other available storage medium. When in use, record the electrical signal detected by the water level sensor 33 when the water pump 32 is idling every set time, such as every hour, and transmit it to the main control MCU and record it as A1n, and compare it with A1, and record the ratio as n, that is, n=A1n / A1. When the value transmitted by the water level sensor 33 to the main control MCU reaches A2×n, the main control MCU turns on the water pump 32; when the value transmitted by the water level sensor 33 to the main control MCU reaches A3×n, the main control MCU turns off the air conditioning system.

[0203] Before leaving the factory, a test of severe working conditions can be carried out. When the impurities in the water reach a certain level, that is, when the impurities are so much that the water pipes or the water pump 32 are blocked, the user is reminded to perform maintenance and clean the water pipes and the water tank 31. The n at this time is recorded as K and stored in the storage medium.

[0204] When the user is using it, the size of n and K is compared at set intervals, such as every hour. When n=K, the user is reminded to perform maintenance, which can be done by an interface display or sound prompt.

[0205] The transmission mode of the voltage signal detected by the water level sensor 33 and the main control MCU can be wired transmission or wireless transmission. In the wired transmission mode, it is only necessary to connect the voltage signal output by the water level sensor 33 to the corresponding detection port of the main control MCU, such as the AD acquisition port, or the receiving module port, such as the IIC receiving port. In the wireless transmission mode, a wireless transmission module and its control module, such as a WIFI module, an RF module, etc., can be added to the water level sensor 33.

[0206] Embodiment 2:

[0207] like Figure 6 As shown, the drainage terminal of this embodiment is an atomizer 36, and the water inlet end of the atomizer 36 is connected to the water outlet end of the drainage pipe 34. The atomizer 36 is arranged in the first smoke exhaust channel 211, and the condensed water enters the atomizer 36 through the drainage pipe 34, and is atomized by the atomizer 36 and discharged outward through the first smoke exhaust channel 211.

[0208] like Figure 7 As shown, the drainage control method of the air-conditioning type range hood of this embodiment includes the following steps:

[0209] 1) Start;

[0210] 2) Test before leaving the factory and store the transmission values ​​A1, A2, A3 corresponding to different water levels inside the water tank;

[0211] 3) The controller reads A1, A2, A3;

[0212] 4) Determine whether there are other stored values ​​in the storage medium;

[0213] If yes, go to step 5).

[0214] If not, go to step 6);

[0215] 5) 5.1. Start timing;

[0216] 5.2. Read A1(n-1);

[0217] 5.3. Obtain the transmission value A;

[0218] 5.4. Calculate the ratio n = A1(n-1) / A1;

[0219] 5.5. Calculate A2(n-1)=n×A2;

[0220] 5.6. Calculate A3(n-1)=n×A3;

[0221] 5.7. Determine whether A is greater than or equal to A3(n-1);

[0222] If yes, turn off the air conditioning system and proceed to step 7);

[0223] If not, proceed to step 5.8;

[0224] 5.8. Determine whether A is greater than or equal to A2(n-1);

[0225] If yes, turn on the water pump and atomizer, and then go to step 7);

[0226] If not, proceed to step 5.9;

[0227] 5.9. Determine whether A is greater than or equal to A1(n-1);

[0228] If yes, read the water pump current I and then go to step 5.10;

[0229] If not, proceed to step 7);

[0230] 5.10. Determine whether the water pump current I is equal to the water pump idling current;

[0231] If yes, then record the transmission value A at this time as A1n and go to step 5.11;

[0232] If not, proceed to step 5.13;

[0233] 5.11. Determine whether the set time has arrived;

[0234] If yes, then A1n is stored in the storage medium and A1(n-1) is erased, and then the process goes to step 5.12; if no, then the process goes to step 5.13;

[0235] 5.12. Timer reset;

[0236] 5.13. Turn off the water pump and atomizer, and then proceed to step 7);

[0237] 6) 6.1. Obtain the transmission value A;

[0238] 6.2. Determine whether A is greater than A3;

[0239] If yes, turn off the air conditioning system and proceed to step 7);

[0240] If not, proceed to step 6.3;

[0241] 6.3. Determine whether A is greater than or equal to A2;

[0242] If yes, turn on the water pump and atomizer, and then go to step 7);

[0243] If not, proceed to step 6.4;

[0244] 6.4. Determine whether A is greater than or equal to A1;

[0245] If yes, turn off the water pump and go to step 6.5;

[0246] If not, proceed to step 7);

[0247] 6.5. Read the water pump current I;

[0248] 6.6. Determine whether the water pump current I is equal to the water pump idling current;

[0249] If yes, then record the transmission value A at this time as A11, and then go to step 6.7;

[0250] If not, proceed to step 7);

[0251] 6.7. Store A11 into a storage medium and then proceed to step 7);

[0252] 7) End and return to step 1).

[0253] For the specific description of the control method of this embodiment, please refer to Embodiment 1, which will not be described in detail here.

Claims

1. A drainage control method for an air-conditioning type range hood, the air-conditioning type range hood comprising a housing (20) and an air-conditioning system, wherein the housing is provided with a smoke exhaust passage (21) and an air outlet passage (22) which are isolated from each other, the air-conditioning system comprising a compressor (11), a condenser (12) and an evaporator (13), wherein the compressor (11), the condenser (12) and the evaporator (13) are connected to each other via a refrigerant pipeline (14), the condenser (12) is arranged in the smoke exhaust passage (21), and the evaporator (13) is arranged in the air outlet passage (22), characterized in that: A drainage device (3) is installed in the casing (20), and the drainage device (3) comprises a water tank (31), a water pump (32), a water level sensor (33), a drainage pipe (34) and a drainage terminal. The water tank (31) is used to collect condensed water condensed on the evaporator (13). The water pump (32) is installed inside the water tank (31). The water inlet end of the drainage pipe (34) is connected to the water outlet of the water pump (32). The drainage terminal is installed in the smoke exhaust channel (21) and is connected to the water outlet end of the drainage pipe (34). The water level sensor (33) is used to collect condensed water condensed on the evaporator (13). The water level in the water tank (31) is sensed, and a controller is included for correspondingly controlling the water pump (32) and the air conditioning system by reading the output signal of the water level sensor (33). The drainage terminal is a liquid distributor (35). The water inlet end of the liquid distributor (35) is connected to the water outlet end of the drainage pipe (34). The water outlet end of the liquid distributor (35) is adjacent to the upper side of the condenser (12). The condensed water flowing out of the water outlet end of the liquid distributor (35) can flow to the surface of the condenser (12) and can flow downward along the surface of the condenser (12). The drainage control method includes the following steps: 1) Start; 2) Test before leaving the factory and store the transmission values ​​A1, A2, A3 corresponding to different water levels inside the water tank; 3) The controller reads A1, A2, A3; 4) Determine whether there are other stored values ​​in the storage medium; If yes, go to step 5). If not, go to step 6); 5) 5.

1. Start timing; 5.

2. Read A1(n-1); 5.

3. Obtain the transmission value A; 5.

4. Calculate the ratio n=A1(n-1) / A1; 5.

5. Calculate A2(n-1)=n×A2; 5.

6. Calculate A3(n-1)=n×A3; 5.

7. Determine whether A is greater than or equal to A3(n-1); If yes, turn off the air conditioning system and proceed to step 7); If not, proceed to step 5.8; 5.

8. Determine whether A is greater than or equal to A2(n-1); If yes, turn on the water pump and then go to step 7); If not, proceed to step 5.9; 5.

9. Determine whether A is greater than or equal to A1(n-1); If yes, read the water pump current I and then go to step 5.10; If not, proceed to step 7); 5.

10. Determine whether the water pump current I is equal to the water pump idling current; If yes, then record the transmission value A at this time as A1n and go to step 5.11; If not, proceed to step 5.13; 5.

11. Determine whether the set time has arrived; If yes, then A1n is stored in the storage medium and A1(n-1) is erased, and then the process goes to step 5.12; If not, proceed to step 5.13; 5.

12. Timer reset; 5.

13. Turn off the water pump and proceed to step 7); 6) 6.

1. Obtain the transmission value A; 6.

2. Determine whether A is greater than A3; If yes, turn off the air conditioning system and proceed to step 7); If not, proceed to step 6.3; 6.

3. Determine whether A is greater than or equal to A2; If yes, turn on the water pump and then go to step 7); If not, proceed to step 6.4; 6.

4. Determine whether A is greater than or equal to A1; If yes, turn off the water pump and go to step 6.5; If not, proceed to step 7); 6.

5. Read the water pump current I; 6.

6. Determine whether the water pump current I is equal to the water pump idling current; If yes, then record the transmission value A at this time as A11, and then go to step 6.7; If not, go to step 7); 6.

7. Store A11 into the storage medium and then proceed to step 7); 7) End and return to step 1).

2. The drainage control method of the air-conditioning type range hood according to claim 1, characterized in that: The drainage terminal is an atomizer (36), and the water inlet end of the atomizer (36) is connected to the water outlet end of the drainage pipe (34).

3. The drainage control method of the air-conditioning type range hood according to claim 1, characterized in that: Along the flow direction of the oil smoke, the drainage terminal is arranged downstream of the condenser (12).

4. The drainage control method of the air-conditioning type range hood according to claim 1, characterized in that: The condenser (12) and the evaporator (13) are both arranged to be inclined relative to the vertical plane.

5. The drainage control method of the air-conditioning type range hood according to claim 1, characterized in that: The smoke exhaust channel (21) comprises a first smoke exhaust channel (211) and a second smoke exhaust channel (212) which are independent of each other, and the condenser (12) is arranged in the first smoke exhaust channel (211).

6. The drainage control method of the air-conditioning type range hood according to claim 1, characterized in that: A fume extractor fan (23) is installed in the housing (20); along the flow direction of the fume, the smoke exhaust channel (21) is arranged downstream of the air outlet of the fume extractor fan (23); the smoke exhaust channel (21) and the air outlet channel (22) are both arranged above the fume extractor fan (23); and the smoke exhaust channel (21) and the air outlet channel (22) are arranged adjacent to each other on the left and right.

7. The drainage control method of the air-conditioning type range hood according to claim 1, characterized in that The step 2) comprises the following steps: 2.

1. Start; 2.

2. Pour water into the water tank; 2.3, water level reaches h1; 2.

4. Read the transmission value A at this time, recorded as A1; 2.

5. Store A1 into storage medium; 2.6, water level reaches h2; 2.

7. Read the transmission value A at this time, recorded as A2; 2.

8. Store A2 into storage medium; 2.9, water level reaches h3; 2.

10. Read the transmission value A at this time, recorded as A3; 2.

11. Store A3 in storage medium; 2.

12. Pour out the water in the water tank and wipe it dry; 2.

13. End.

8. A drainage control method for an air-conditioning range hood as claimed in claim 2, characterized in that The steps include: 1) Start; 2) Test before leaving the factory and store the transmission values ​​A1, A2, A3 corresponding to different water levels inside the water tank; 3) The controller reads A1, A2, A3; 4) Determine whether there are other stored values ​​in the storage medium; If yes, go to step 5). If not, go to step 6); 5) 5.

1. Start timing; 5.

2. Read A1(n-1); 5.

3. Obtain the transmission value A; 5.

4. Calculate the ratio n=A1(n-1) / A1; 5.

5. Calculate A2(n-1)=n×A2; 5.

6. Calculate A3(n-1)=n×A3; 5.

7. Determine whether A is greater than or equal to A3(n-1); If yes, turn off the air conditioning system and proceed to step 7); If not, proceed to step 5.8; 5.

8. Determine whether A is greater than or equal to A2(n-1); If yes, turn on the water pump and atomizer, and then go to step 7); If not, proceed to step 5.9; 5.

9. Determine whether A is greater than or equal to A1(n-1); If yes, read the water pump current I and then go to step 5.10; If not, proceed to step 7); 5.

10. Determine whether the water pump current I is equal to the water pump idling current; If yes, then record the transmission value A at this time as A1n and go to step 5.11; If not, proceed to step 5.13; 5.

11. Determine whether the set time has arrived; If yes, then A1n is stored in the storage medium and A1(n-1) is erased, and then the process goes to step 5.12; If not, proceed to step 5.13; 5.

12. Timer reset; 5.

13. Turn off the water pump and atomizer, and then proceed to step 7); 6) 6.

1. Obtain the transmission value A; 6.

2. Determine whether A is greater than A3; If yes, turn off the air conditioning system and proceed to step 7); If not, proceed to step 6.3; 6.

3. Determine whether A is greater than or equal to A2; If yes, turn on the water pump and atomizer, and then go to step 7); If not, proceed to step 6.4; 6.

4. Determine whether A is greater than or equal to A1; If yes, turn off the water pump and go to step 6.5; If not, proceed to step 7); 6.

5. Read the water pump current I; 6.

6. Determine whether the water pump current I is equal to the water pump idling current; If yes, then record the transmission value A at this time as A11, and then go to step 6.7; If not, go to step 7); 6.

7. Store A11 into the storage medium and then proceed to step 7); 7) End and return to step 1).

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