Air-conditioning type range hood and its drainage and heat dissipation control method

Abstract

An air-conditioned range hood and its drainage and heat dissipation control method include a range hood housing with a range hood fan installed within it, a liquid distributor and a humidity sensor installed within a first exhaust duct within the housing, the liquid distributor used to transfer condensed water condensed on the surface of the evaporator to the condenser, and the humidity sensor used to monitor the humidity within the first exhaust duct. A controller controls the range hood fan speed accordingly by receiving an output signal from the humidity sensor. The present invention has the advantage that the controller of the air-conditioned range hood controls the range hood fan speed accordingly by receiving an output signal from the humidity sensor, thereby optimizing the drainage capacity of the liquid distributor. This control method solves the problem of condensed water generated by the air-conditioned range hood being unable to be drained. This method is particularly effective in complex kitchen environments with heavy smoke production. The method accurately identifies the blockage status of the condenser and adjusts the fan speed accordingly, thereby maximizing the drainage capacity of the liquid distributor and the heat dissipation capacity of the condenser, thereby improving air conditioning energy efficiency.

Description

Technical Field

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

[0002] To cool the kitchen air in the summer and provide warm air in the winter, various kitchen air conditioners have been invented. Currently, some products on the market include air-conditioning range hoods, which are built on the range hood platform with an air conditioning component added. These products can perform all the functions of a range hood while also providing air conditioning. The prior art also discloses air-conditioning range hoods with a dual-channel structure. Specifically, the exhaust channel within the range hood is divided into a first exhaust channel and a second exhaust channel. A range hood fan is installed within the range hood, and one of the heat exchangers of the air conditioning component is installed in the first exhaust channel. When the air-conditioning range hood operates in cooling mode, the heat exchanger in the first exhaust channel becomes a condenser. Thus, the first exhaust channel constitutes a heat dissipation channel, and the second exhaust channel constitutes a direct exhaust channel. A damper is installed at the exhaust fan's air outlet. When working in air-conditioning mode, taking the cooling condition as an example, the first smoke exhaust channel is opened and the second smoke exhaust channel is closed by switching the air valve, and the oil smoke airflow enters the first smoke exhaust channel and passes through the condenser to dissipate heat for the condenser; in the range hood working mode, the first smoke exhaust channel is closed and the second smoke exhaust channel is opened by switching the air valve, the condenser does not need to dissipate heat, and the oil smoke airflow is directly discharged through the second smoke exhaust channel.

[0003] When operating in air-conditioning mode, air-conditioning range hoods generate condensate. Currently, some systems collect and discharge this condensate through an atomizer, some use a pump to pump the water out through a pipe, and some use a distributor to deposit the condensate onto the condenser, where the fan airflow passes through the condenser to remove the water vapor. While using a distributor to distribute water effectively treats the condensate and dissipates heat from the condenser, thereby improving air conditioning efficiency, there are drawbacks: if the distributor is too little, drainage is slow; if too much is placed, it can easily overflow onto the fan blades. Furthermore, kitchen environments are often filled with oily smoke, and over time, the condenser will inevitably become clogged with oil, dirt, and foreign matter. This not only affects the condenser's heat dissipation capacity, but also its drainage capacity. Furthermore, when the condenser is clogged, the air volume flowing through it changes, resulting in a significant deviation between the distributor's initial setting and the actual usage value. Consequently, using the initially set distribution volume will result in slow evaporation and overflow onto the fan blades. In summary, further improvements need to be made to the existing air-conditioning type range hoods. Summary of the Invention

[0004] The first technical problem to be solved by the present invention is to provide an air-conditioning type range hood that can optimize the drainage capacity of the liquid distributor when the condenser is blocked, in response to the above-mentioned existing technical status.

[0005] The second technical problem to be solved by the present invention is to provide a drainage and heat dissipation control method for an air-conditioning type range hood that can ensure the heat dissipation capacity of the condenser and the drainage capacity of the liquid distributor in response to the above-mentioned existing technical status.

[0006] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: the air-conditioning type range hood includes a casing, a range fume fan is installed inside the casing, and a smoke exhaust channel and an air outlet channel isolated from each other are provided inside the casing. The smoke exhaust channel includes a first smoke exhaust channel and a second smoke exhaust channel, and an air valve is installed at the air outlet of the range fume fan for switching the air outlet of the range fume fan to be connected to the first smoke exhaust channel or the second smoke exhaust channel. A condenser is installed in the first smoke exhaust channel, an evaporator is installed in the air outlet channel, and a compressor is also included. The compressor, condenser and evaporator are connected by a refrigerant pipeline, and it is characterized in that: a liquid distributor and a humidity sensor are also installed in the first smoke exhaust channel, the liquid distributor is used to transport condensed water condensed on the surface of the evaporator to the condenser, and the humidity sensor is used to monitor the humidity in the first smoke exhaust channel, and also includes a controller which controls the speed of the range fume fan accordingly by receiving the output signal of the humidity sensor.

[0007] In order to ensure smooth air discharge from the air-conditioning outlet, an air outlet fan is also installed in the air outlet channel, and the casing is provided with an air-conditioning outlet connected to the outlet of the air outlet fan, and the air outlet fan is arranged downstream of the evaporator along the air flow direction.

[0008] In order to make the air outlet of the air conditioner blow out clean air, a filter is installed at the entrance of the air outlet channel, and along the air flow direction, the filter is arranged upstream of the evaporator.

[0009] In order to make the structure more compact and the installation more convenient, the compressor is installed inside the casing, and the compressor is located outside the air outlet channel and the smoke exhaust channel.

[0010] In order to prevent the oil smoke from contaminating the condenser, an electrostatic purification device is installed in the first smoke exhaust channel, and along the flow direction of the oil smoke, the electrostatic purification device is arranged upstream of the condenser.

[0011] Further preferably, the smoke exhaust channel and the air outlet channel are both arranged above the range fumes suction fan, and the smoke exhaust channel and the air outlet channel are arranged adjacent to each other on the left and right.

[0012] As a preferred embodiment of any of the above schemes, the first smoke exhaust channel has an independent first smoke exhaust port, the second smoke exhaust channel has an independent second smoke exhaust port, a smoke pipe is installed on the top of the casing, and the smoke pipe includes a first smoke inlet, a second smoke inlet and a smoke outlet, the first smoke inlet is connected to the first smoke exhaust port, and the second smoke inlet is connected to the second smoke exhaust port.

[0013] The technical solution adopted by the present invention to solve the second technical problem is: the condenser drainage control method of the air-conditioning range hood,

[0014] S1: process starts;

[0015] S2: The range hood operates in air conditioning mode;

[0016] S3: Control the air valve position to open the first smoke exhaust channel to allow air to pass through the condenser;

[0017] S4: Record the fan current i1;

[0018] S5: Control the air valve position and open the second smoke exhaust channel so that the airflow does not pass through the condenser;

[0019] S6: Record the fan current i0;

[0020] S7: Calculate the current difference between the two states Δi=i1-i0;

[0021] S8: Determine whether Δi is greater than 0;

[0022] If yes, it means the condenser is clogged and the process goes to step S9;

[0023] If not, it means that the condenser is not blocked, and the process goes to step S14;

[0024] S9: The speed of the range hood fan increases by ΔV;

[0025] S10: Open the liquid dispenser;

[0026] S10: Record the humidity H1 in the first smoke exhaust channel at this time;

[0027] S11: close the liquid distributor;

[0028] S12: Record the humidity H2 in the first smoke exhaust channel at this time, and calculate the humidity difference dH=H2-H1;

[0029] S13: Determine whether the humidity difference dH is greater than dH0, where dH0 is the initial drainage capacity of the liquid distributor when it leaves the factory;

[0030] If yes, proceed to step S14;

[0031] If not, proceed to step S9;

[0032] S14: The range hood fan operates normally at the initial speed V0;

[0033] S15: The process ends.

[0034] Compared with the prior art, the advantages of the present invention are that: the air-conditioned range hood is equipped with a liquid distributor and a humidity sensor in the first smoke exhaust channel, and the controller controls the range hood fan speed accordingly by receiving the output signal of the humidity sensor. This control method solves the problem that the condensed water generated by the air-conditioned range hood cannot be discharged, especially for the complex kitchen environment with large amounts of oil smoke. It can accurately identify the blockage state of the condenser and adjust the fan speed accordingly, thereby maximizing the drainage capacity of the liquid distributor and the heat dissipation capacity of the condenser, which is beneficial to improving the energy efficiency of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic structural diagram of an air-conditioning range hood according to an embodiment of the present invention;

[0036] Figure 2 A schematic diagram of the principle of an air conditioning assembly according to an embodiment of the present invention;

[0037] Figure 3 This is a flow chart of the drainage and heat dissipation control method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0038] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0039] like Figure 1 As shown, the air-conditioning range hood of this embodiment includes a casing 1, a range fume fan 2 is installed inside the casing 1, and a smoke exhaust channel and an air outlet channel 4 are isolated from each other inside the casing 1. The smoke exhaust channel and the air outlet channel 4 are both arranged above the range fume fan 2, and the smoke exhaust channel is arranged downstream of the air outlet of the range fume fan 2, and the smoke exhaust channel and the air outlet channel 4 are arranged adjacent to each other on the left and right.

[0040] The smoke exhaust duct of this embodiment includes a first smoke exhaust duct 31 and a second smoke exhaust duct 32. A damper 5 is installed at the air outlet of the range fume exhaust fan 2. The damper 5 rotates under the drive of a damper motor (not shown). The damper 5 is used to switch the air outlet of the range fume exhaust fan 2 between the first smoke exhaust duct 31 and the second smoke exhaust duct 32. A condenser 6 and an electrostatic purification device 15 are installed in the first smoke exhaust duct 31. The first smoke exhaust duct 31 constitutes the condenser heat dissipation channel, and the second smoke exhaust duct 32 constitutes the oil smoke direct exhaust channel. To prevent oil smoke from contaminating the condenser 6, the electrostatic purification device 15 is located upstream of the condenser 6 along the direction of oil smoke flow. In addition, the first smoke exhaust channel 31 has an independent first smoke exhaust port 33, the second smoke exhaust channel 32 has an independent second smoke exhaust port 34, and a smoke pipe 16 is installed on the top of the casing 1. The smoke pipe 16 includes a first smoke inlet 161, a second smoke inlet 162 and a smoke outlet 163. The first smoke inlet 161 is connected to the first smoke exhaust port 33, and the second smoke inlet 162 is connected to the second smoke exhaust port 34.

[0041] An outlet fan 12 and evaporator 7 are installed within the air outlet duct 4. An air conditioning outlet 13 is provided on the housing 1, connected to the outlet of the outlet fan 12. The outlet fan 12 is located downstream of the evaporator 7 along the air flow direction. A filter 14 is installed at the inlet of the outlet duct 4, upstream of the evaporator 7 along the air flow direction. When operating in air conditioning mode, air outside the housing 1 is filtered by the filter 14 before entering the air outlet duct 4. Cool air is blown out of the air conditioning outlet 13 by the outlet fan 12.

[0042] In this embodiment, a compressor 8 is installed inside the housing 1, to the left of the range hood fan 2. The compressor 8, condenser 6, and evaporator 7 are interconnected via a refrigerant pipe 9, through which a brine flows. The specific operating principle of the air conditioning system is the same as that of conventional air conditioners and will not be further described here.

[0043] In this embodiment, a liquid distributor 10 and a humidity sensor 11 are also installed in the first smoke exhaust channel 31. The liquid distributor 10 is used to transport the condensed water condensed on the surface of the evaporator 7 to the condenser 6, dissipating heat and cooling the condenser 6. At the same time, the condensed water itself is evaporated and discharged to the outside. The humidity sensor 11 is used to monitor the humidity in the first smoke exhaust channel 31. The controller (not shown in the figure) controls the speed of the range fumes exhaust fan 2 accordingly by receiving the output signal of the humidity sensor 11. The signal connection between the humidity sensor 11 and the controller, and the signal connection between the controller and the range fumes exhaust fan 2 are existing conventional designs, and their principles and working processes will not be explained in detail.

[0044] When working in air-conditioning mode, when both the range hood and the air conditioner are turned on, the first smoke exhaust channel 31 is opened and the second smoke exhaust channel 32 is closed by switching the air valve 5, and the oil smoke airflow passes over the surface of the condenser 6 to cool down and dissipate heat of the condenser, reducing the temperature of the refrigerant flowing through the condenser, thereby improving the heat exchange effect of the condenser and further improving the energy efficiency of the air conditioner. At the same time, under the action of the indoor fan 12, cold air is sent into the kitchen room from the air-conditioning outlet 13. The condensed water generated by the evaporator 7 is transported to the condenser 6 through the liquid distributor 10, and the condensed water flows downward along the surface of the condenser 6. On the one hand, the condenser 6 is further cooled, and the heat exchange effect of the condenser is further improved, thereby realizing the effective use of the condensed water. On the other hand, the condensed water can be heated by the condenser 6 and evaporated and discharged from the first smoke exhaust channel 31, eliminating the need for a condensed water discharge device.

[0045] In the range hood only on mode, the first smoke exhaust channel 31 is closed and the second smoke exhaust channel 32 is opened by switching the air valve 5 , and the oil smoke is discharged to the outside through the second smoke exhaust channel 32 .

[0046] Considering that the kitchen environment is full of oil smoke, as the use time increases, some oil impurities will inevitably be blocked in the condenser 6, which not only affects the heat dissipation capacity of the condenser 6 but also affects the drainage capacity of the liquid distributor 10. The air-conditioning range hood adopts the following drainage and heat dissipation control method, which can accurately identify the blockage state of the condenser 6 and adjust the speed of the range hood fan 2 accordingly, so as to maximize the drainage capacity of the liquid distributor 10 and the heat dissipation capacity of the condenser 6. The specific steps are as follows:

[0047] S1: process starts;

[0048] S2: The range hood operates in air conditioning mode;

[0049] S3: Control the position of the air valve 5 to open the first smoke exhaust channel 31, allowing the air flow to pass through the condenser 6;

[0050] S4: Record the fan current i1;

[0051] S5: Control the air valve position to open the second smoke exhaust channel 32 so that the airflow does not pass through the condenser 6;

[0052] S6: Record the fan current i0;

[0053] S7: Calculate the current difference between the two states Δi=i1-i0;

[0054] S8: Determine whether Δi is greater than 0;

[0055] If yes, it means that the condenser 6 is blocked and the process goes to step S9;

[0056] If not, it means that the condenser 6 is not blocked, and the process goes to step S14;

[0057] S9: The speed of the range hood fan 2 increases by ΔV;

[0058] S10: Open the liquid distributor 10;

[0059] S10: Record the humidity H1 in the first smoke exhaust channel 31 at this time;

[0060] S11: closing the liquid distributor 10;

[0061] S12: Record the humidity H2 in the first smoke exhaust channel 31 at this time, and calculate the humidity difference dH=H2-H1;

[0062] S13: Determine whether the humidity difference dH is greater than dH0, where dH0 is the initial drainage capacity of the liquid distributor 10 when it leaves the factory;

[0063] If yes, proceed to step S14;

[0064] If not, proceed to step S9;

[0065] S14: The range hood fan 2 operates normally at the initial speed V0;

[0066] S15: The process ends.

[0067] As can be seen, this control method optimizes maximum drainage and heat dissipation capacity under various condenser 6 blockage conditions. Both the maximum condenser 6 blockage value and the maximum liquid distributor 10 drainage value can be set before shipment. If the maximum condenser 6 blockage value is exceeded, an alarm alerts the user. If the maximum blockage value is less than the maximum blockage value, the range hood fan 2 speed can still be increased to ensure maximum drainage capacity of the liquid distributor 10.

Claims

1. An air-conditioning range hood, comprising a housing (1), a range hood fan (2) installed inside the housing (1), a smoke exhaust channel and an air outlet channel (4) isolated from each other provided inside the housing (1), the smoke exhaust channel comprising a first smoke exhaust channel (31) and a second smoke exhaust channel (32), a damper (5) for switching the air outlet of the range hood fan to be connected to the first smoke exhaust channel (31) or the second smoke exhaust channel (32), a condenser (6) installed in the first smoke exhaust channel (31), an evaporator (7) installed in the air outlet channel (4), and a compressor (8), wherein the compressor (8), the condenser (6) and the evaporator (7) are connected via a refrigerant pipeline (9), characterized in that: A liquid distributor (10) and a humidity sensor (11) are also installed in the first smoke exhaust channel (31). The liquid distributor (10) is used to transport condensed water condensed on the surface of the evaporator (7) to the condenser (6). The humidity sensor (11) is used to monitor the humidity in the first smoke exhaust channel (31). The controller also includes a controller that controls the rotation speed of the range fume fan (2) accordingly by receiving the output signal of the humidity sensor (11).

2. The air-conditioning type range hood according to claim 1, characterized in that: An air outlet fan (12) is also installed in the air outlet channel (4), and an air conditioning outlet (13) connected to the outlet of the air outlet fan (12) is provided on the housing (1). In addition, along the air flow direction, the air outlet fan (12) is arranged downstream of the evaporator (7).

3. The air-conditioning type range hood according to claim 2, characterized in that: A filter (14) is installed at the inlet of the air outlet channel (4), and the filter (14) is arranged upstream of the evaporator (7) along the air flow direction.

4. The air-conditioning type range hood according to claim 1, characterized in that: The compressor (8) is installed inside the casing (1), and the compressor (8) is located outside the air outlet channel (4) and the smoke exhaust channel.

5. The air-conditioning type range hood according to claim 1, characterized in that: An electrostatic purification device (15) is installed in the first smoke exhaust channel (31), and the electrostatic purification device (15) is arranged upstream of the condenser (6) along the flow direction of the oil smoke.

6. The air-conditioning type range hood according to claim 1, characterized in that: The smoke exhaust channel and the air outlet channel (4) are both arranged above the oil fume suction fan (2), and the smoke exhaust channel and the air outlet channel (4) are arranged adjacent to each other on the left and right.

7. The air-conditioning type range hood according to any one of claims 1 to 6, characterized in that: The first smoke exhaust channel (31) has an independent first smoke exhaust port (33), and the second smoke exhaust channel (32) has an independent second smoke exhaust port (34). A smoke pipe (16) is installed on the top of the housing (1), and the smoke pipe (16) includes a first smoke inlet (161), a second smoke inlet (162) and a smoke outlet (163). The first smoke inlet (161) is connected to the first smoke exhaust port (33), and the second smoke inlet (162) is connected to the second smoke exhaust port (34).

8. A method for controlling drainage and heat dissipation of an air-conditioning-type range hood according to any one of claims 1 to 7, S1: process starts; S2: The range hood operates in air conditioning mode; S3: Control the air valve position to open the first smoke exhaust channel to allow air to pass through the condenser; S4: Record the fan current i1; S5: Control the air valve position and open the second smoke exhaust channel so that the airflow does not pass through the condenser; S6: Record the fan current i0; S7: Calculate the current difference between the two states Δi=i1-i0; S8: Determine whether Δi is greater than 0; If yes, it means the condenser is clogged and the process goes to step S9; If not, it means that the condenser is not blocked, and the process goes to step S14; S9: The speed of the range hood fan increases by ΔV; S10: Open the liquid dispenser; S10: Record the humidity H1 in the first smoke exhaust channel at this time; S11: close the liquid distributor; S12: Record the humidity H2 in the first smoke exhaust channel at this time, and calculate the humidity difference dH=H2-H1; S13: Determine whether the humidity difference dH is greater than dH0, where dH0 is the initial drainage capacity of the liquid distributor when it leaves the factory; If yes, proceed to step S14; If not, proceed to step S9; S14: The range hood fan operates normally at the initial speed V0; S15: The process ends.

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