A smoke baffle control method for air-conditioning type range hood

Abstract

A smoke damper control method for an air-conditioning range hood, wherein the smoke exhaust channel in the range hood housing is divided into a first smoke exhaust channel and a second smoke exhaust channel, a first heat exchanger is installed in the first smoke exhaust channel, and a second heat exchanger is installed in the air outlet channel, the compressor, the first heat exchanger and the second heat exchanger are connected through a refrigerant pipeline, and the smoke damper has three different states: fully open, slightly open and fully closed. The smoke damper control method sets the smoke duct resistance when the smoke damper is slightly open before leaving the factory, and each time the smoke damper is opened and closed, the factory-set smoke duct resistance value when the smoke damper is slightly open is adaptively corrected, and the smoke duct resistance generated when the smoke damper is slightly opened is controlled, thereby controlling the opening stroke of the smoke damper, ensuring that the opening angle is consistent each time it is slightly opened, and the set stroke will not change with the difference in the motion mechanism or the different user usage scenarios, thereby solving the problem of incomplete opening and inconsistent stroke during the slightly open function.

Description

Technical Field

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

[0002] In order to make the kitchen warm in winter and cool in summer, people have invented various kitchen air conditioners. In order to make the structure more compact and the installation more convenient, various air-conditioning hoods are disclosed in the prior art, that is, air-conditioning components are added on the basis of the range hood platform, which can realize all the functions of the range hood and the functions of the air conditioner. For example, the air-conditioning range hood with a dual-channel structure disclosed in the prior art, the exhaust channel inside the range hood is divided into a first exhaust channel and a second exhaust channel, a range hood fan is installed inside the range hood, and one of the heat exchangers of the air-conditioning component is installed in the first exhaust channel. For the air-conditioning range hood operating in the cooling mode, the heat exchanger in the first exhaust channel becomes a condenser. In this way, the first exhaust channel constitutes a heat dissipation channel, the second exhaust channel constitutes a direct exhaust channel, and the air outlet of the range hood fan is installed with an air valve. When working in air-conditioning mode, taking the refrigeration 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 to 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] In addition, smoke baffles are installed at the smoke inlet of air-conditioned range hoods. When the air-conditioned range hood is in the off state, the smoke baffles are closed; when the air-conditioned range hood works in pure air-conditioning mode, the smoke baffles do not need to gather smoke, and only need to open 1 / 3 of the stroke (micro-opening function); in pure range hood mode or range hood air-conditioning mixed working mode, the smoke baffles are fully opened to gather smoke. At present, the main method adopted is to control the running time of the smoke baffle drive motor and calibrate the movement time required for opening, closing and micro-opening (1 / 3 stroke) in advance. However, it is difficult to keep the movement mechanism of the smoke baffle completely consistent, and with different wear and tear and different use environments, it may not be opened in place. If the full opening and full closing are set by calibrating the movement time, if the consistency of the whole machine is poor, the closing and opening strokes are also inconsistent. Although it can be guaranteed that the full opening and closing can be in place by extending the opening and closing time, it is not applicable to the intermediate stroke (micro-opening function). It can be seen from this that if the micro-opening function (1 / 3 stroke) determines the stroke through calibrated time, it will have very high requirements on the consistency of the whole machine, and as the use time increases, the micro-opening stroke will change, resulting in incomplete opening, or too small opening, affecting the heat dissipation of the air-conditioning condenser, and thus affecting the energy efficiency of the air-conditioning. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a smoke damper control method for an air-conditioning type range hood, which can adapt to different usage scenarios and motion mechanisms and ensure the consistency of the stroke when the smoke damper is slightly opened, in response to the above-mentioned existing technical status.

[0005] The technical solution adopted by the present invention to solve the above technical problems is as follows: a smoke baffle control method of the air-conditioning type range hood, the air-conditioning type range hood comprises a casing, a range hood fan is installed inside the casing, a smoke inlet chamber which is fluidly connected to the range hood fan is provided at the lower portion of the casing, a smoke inlet chamber which is fluidly connected to the range hood fan is provided with a smoke baffle, a smoke exhaust passage and an air outlet passage which are isolated from each other are provided inside the casing, the smoke exhaust passage comprises a first smoke exhaust passage and a second smoke exhaust passage, an air valve for switching the air outlet of the range hood fan to be connected to the first smoke exhaust passage or the second smoke exhaust passage is provided at the air outlet of the range hood fan, a first heat exchanger is installed in the first smoke exhaust passage, a second heat exchanger is installed in the air outlet passage, and a compressor is also included, the compressor, the first heat exchanger and the second heat exchanger are connected via a refrigerant pipeline, and the characteristic is that the smoke baffle has three different states: fully opened, slightly opened and fully closed, and the control method of the smoke baffle comprises the following steps:

[0006] S1: Turn on pure air conditioning mode;

[0007] S2: The smoke baffle runs to the maximum stroke;

[0008] S3: the second smoke exhaust channel is opened, and the exhaust air does not pass through the first heat exchanger;

[0009] S4: Collect the chimney resistance at this time, and record it as the chimney resistance R0 of the user's home;

[0010] S5: the first smoke exhaust channel is opened, and the exhaust air passes through the first heat exchanger;

[0011] S6: Collect the wind resistance R at this time K ;

[0012] S7: The wind resistance of the first heat exchanger is obtained as R L =R K -R0;

[0013] S8: The resistance of the first heat exchanger increases by ΔR=R L -R L0 , where R L0 is the initial resistance of the first heat exchanger;

[0014] S9: When the smoke shield is slightly opened, the resistance is corrected to R set =R set -ΔR;

[0015] S10: Arrival of new correction value R set The smoke baffle stops moving.

[0016] Preferably, in step S1, the air conditioner gear is kept constant. In this way, the gear is constant, the motor speed of the range hood fan remains unchanged, different resistances correspond to different motor phase current values, and this quantitative relationship can be obtained through calibration, so the motor phase current can be collected in real time to characterize the current resistance.

[0017] 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.

[0018] In order to make the system 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.

[0019] In order to prevent the oil smoke from contaminating the first heat exchanger, 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 first heat exchanger.

[0020] Preferably, an air conditioner is installed in the housing, the air conditioner includes an air outlet fan and the second heat exchanger, and the air conditioner has a return air port and an air conditioner outlet. In this way, the air duct between the return air port and the air conditioner outlet forms an air outlet channel, and the air conditioner outlet can smoothly discharge air under the action of the air outlet fan.

[0021] In order to make the outlets of the first smoke exhaust channel and the second smoke exhaust channel independent of each other, the first smoke exhaust channel has an independent first smoke exhaust port, the second smoke exhaust channel has an independent second smoke exhaust port, and a smoke pipe is installed on the top of the casing, 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.

[0022] As a preferred embodiment of any of the above solutions, the first heat exchanger is a condenser, and the second heat exchanger is an evaporator. In this way, the air conditioner works in a cooling mode, and cold air is blown out from the air outlet of the air conditioner.

[0023] Compared with the prior art, the advantages of the present invention are: the smoke shield control method of the air-conditioning type range hood can be applicable to different smoke shield movement mechanical structures, and the running time of the micro-opening function can be adaptively corrected according to the usage scenarios and service life of different users, thereby ensuring that the opening and closing stroke of the micro-opening function is consistent throughout the entire service life cycle, solving the problem of incomplete opening and inconsistent stroke during the micro-opening function. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1It is a structural schematic diagram of an air-conditioning type range hood according to an embodiment of the present invention;

[0025] Figure 2 A schematic structural diagram of the air-conditioning type range hood according to another embodiment of the present invention;

[0026] Figure 3 A schematic diagram of the principle of an air conditioning assembly according to an embodiment of the present invention;

[0027] Figure 4 This is a flow chart of a method for controlling a wind and smoke shield according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below with reference to the accompanying drawings.

[0029] like Figure 1 and Figure 2 As shown, the air-conditioning type range hood casing 1 of this embodiment has a range hood fan 2 installed inside the casing 1, a smoke inlet chamber 100 in fluid communication with the range hood fan 2 is provided at the lower part of the casing 1, and a smoke baffle 3 is installed at the smoke inlet of the smoke inlet chamber 100. The smoke exhaust channel and the air outlet channel 5 are isolated from each other inside the casing 1, and the smoke exhaust channel and the air outlet channel 5 are both arranged above the range hood fan 2, and the smoke exhaust channel is arranged downstream of the air outlet of the range hood fan 2, and the smoke exhaust channel and the air outlet channel 5 are arranged adjacent to each other on the left and right.

[0030] The smoke exhaust channel of this embodiment includes a first smoke exhaust channel 41 and a second smoke exhaust channel 42. A damper 6 is installed at the air outlet of the fume extractor fan 2. The damper 6 rotates under the drive of the damper motor (not shown in the figure). The damper 6 is used to switch the air outlet of the fume extractor fan 2 to be connected with the first smoke exhaust channel 41 or the second smoke exhaust channel 42. A first heat exchanger 7 and an electrostatic purification device 12 are installed in the first smoke exhaust channel 41. In order to prevent the fume from polluting the first heat exchanger 7, the electrostatic purification device 12 is arranged upstream of the first heat exchanger 7 along the flow direction of the fume. In addition, the first smoke exhaust channel 41 has an independent first smoke exhaust port 43, and the second smoke exhaust channel 42 has an independent second smoke exhaust port 44. The smoke pipe 13 includes a first smoke inlet 131, a second smoke inlet 132 and a smoke outlet 133. The first smoke inlet 131 is connected to the first smoke exhaust port 43, and the second smoke inlet 132 is connected to the second smoke exhaust port 44.

[0031] An air conditioner 11 is installed in the housing 1. The air conditioner 11 includes an air outlet fan 111 and a second heat exchanger 8. The air conditioner 11 has a return air port 112 and an air conditioner outlet 113. An air outlet passage 5 is formed inside the air conditioner 11, that is, the air outlet fan 111 and the second heat exchanger 8 are installed in the air outlet passage 5. A compressor 9 is installed inside the housing 1 and on the left side of the range fumes exhaust fan 2. The compressor 9, the first heat exchanger 7 and the second heat exchanger 8 are connected through a refrigerant pipeline 10. The specific working principle of the air conditioning system is the same as that of the existing air conditioner, and will not be described in detail here.

[0032] When the air conditioner is working in cooling mode, the first heat exchanger 7 is a condenser and the second heat exchanger 8 is an evaporator. When the air conditioner is working in heating mode, the first heat exchanger 7 is an evaporator and the second heat exchanger 8 is a condenser. Taking the commonly used cooling mode as an example, when the range hood and the air conditioner are both turned on, the first smoke exhaust channel 41 is opened and the second smoke exhaust channel 42 is closed by switching the air valve 6, and the oil smoke airflow passes over the surface of the first heat exchanger 7, i.e., the condenser, to cool and dissipate the heat of 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, cold air is sent into the kitchen from the air outlet 113 of the air conditioner.

[0033] In the range hood only on mode, the first smoke exhaust channel 41 is closed and the second smoke exhaust channel 42 is opened by switching the air valve 6 , and the smoke is discharged to the outside through the second smoke exhaust channel 42 .

[0034] The smoke baffle 3 of the air-conditioning range hood has the following functions: in the pure range hood mode, the push rod driving motor (not shown) makes the smoke baffle 3 in a fully open state, and the oil smoke enters from the smoke inlet of the smoke inlet chamber 100 in this state, and finally flows out through the second smoke exhaust port 44 of the second smoke exhaust channel 42. In the pure air-conditioning mode, the push rod motor drives the smoke baffle 3 to be in a slightly open state, and the air flow enters from the smoke inlet of the smoke inlet chamber 100 in this state, flows through the condenser, and finally flows out from the first smoke exhaust port 43 of the first smoke exhaust channel 41. In the mixed air-conditioning range hood, the smoke baffle 3 is in a fully open state, and the smoke enters from the smoke inlet of the smoke inlet chamber 100 in this state, and the oil smoke mixed gas flows through the condenser, and finally flows out from the first smoke exhaust port 43 of the first smoke exhaust channel 41. In addition, in the pure air-conditioning mode, the smoke baffle 3 is first fully opened, and then closed to 1 / 3 of the stroke. During the closing process, the air inlet resistance is calculated in real time to see whether it has reached the set value, thereby ensuring that each opening and closing can be at the 1 / 3 stroke.

[0035] The smoke damper control method of the air-conditioning range hood of this embodiment includes setting the resistance of the flue when the smoke damper 3 is slightly opened before leaving the factory. In actual use, the resistance of the flue in the user's home is unknown, and the blockage of the condenser is also unknown. Therefore, each time the smoke damper 3 is opened and closed, the smoke damper 3 is adaptively corrected to the factory-set flue resistance value when the smoke damper 3 is slightly opened. By controlling the flue resistance generated when the smoke damper 3 is slightly opened, the opening stroke of the smoke damper 3 is controlled to ensure that the opening angle is consistent each time it is slightly opened. The specific control method is as follows:

[0036] S1: Turn on pure air conditioning mode;

[0037] S2: The smoke baffle 3 runs to the maximum stroke;

[0038] S3: the second smoke exhaust channel 42 is opened, and the exhaust air does not pass through the first heat exchanger 7;

[0039] S4: Collect the chimney resistance at this time, and record it as the chimney resistance R0 of the user's home;

[0040] S5: the first smoke exhaust channel 41 is opened, and the exhaust air passes through the first heat exchanger 7;

[0041] S6: Collect the wind resistance R at this time K ;

[0042] S7: The wind resistance of the first heat exchanger 7 is obtained as R L =R K -R0;

[0043] S8: The resistance of the first heat exchanger 7 increases by ΔR=R L -R L0 , where R L0 is the initial resistance of the first heat exchanger 7;

[0044] S9: When the smoke baffle 3 is slightly opened, the resistance is corrected to R set =R set -ΔR;

[0045] S10: Arrival of new correction value R set When , the smoke baffle 3 stops moving.

[0046] In the cooling mode, the first heat exchanger 7 in the above steps is a condenser.

[0047] In the above step S1, the air conditioner gear is kept constant, the speed of the range hood fan 2 is unchanged, different resistances correspond to different motor phase current values, and this quantitative relationship can be obtained through calibration. Therefore, the motor phase current can be collected in real time to characterize the current resistance.

[0048] The above control method can be applied to different smoke baffle movement mechanical structures, and can adaptively correct the running time of the micro-opening function according to the usage scenarios and service life of different users, thereby ensuring that the opening and closing stroke of the function is consistent throughout the entire service life cycle.

[0049] The "fluid connection" referred to in the present invention refers to the spatial position relationship between two parts or parts (hereinafter collectively referred to as the first part and the second part respectively), that is, the fluid (gas, liquid or a mixture of the two) can flow from the first part along the flow path or / and be transported to the second part. The first part and the second part can be directly connected, or the first part and the second part can be indirectly connected through at least one third party. The third party can be a fluid channel such as a pipe, channel, duct, guide member, hole, groove, etc., or it can be a chamber allowing fluid to flow through, or a combination of the above.

Claims

1. A method for controlling a smoke baffle of an air-conditioning range hood, the air-conditioning range hood comprising a housing (1), a range hood fan (2) being installed inside the housing (1), a smoke inlet chamber (100) being fluidically connected to the range hood fan (2) being provided at the lower portion of the housing (1), a smoke inlet chamber (100) being installed at a smoke inlet of the smoke inlet chamber (100), a smoke baffle (3) being installed at a smoke inlet of the smoke inlet chamber (100), a smoke exhaust channel and an air outlet channel (5) being isolated from each other being provided inside the housing (1), the smoke exhaust channel comprising a first smoke exhaust channel (41) and a second smoke exhaust channel (42). 2), a damper (6) for switching the air outlet of the range fumes fan (2) to be connected to the first smoke exhaust channel (41) or the second smoke exhaust channel (42) is installed at the air outlet of the range fumes fan (2), a first heat exchanger (7) is installed in the first smoke exhaust channel (41), a second heat exchanger (8) is installed in the air outlet channel (5), and a compressor (9) is also included, the compressor (9), the first heat exchanger (7) and the second heat exchanger (8) are connected via a refrigerant pipeline (10), characterized in that: The smoke shield (3) has three different states: fully open, slightly open and fully closed. The control method of the smoke shield (3) comprises the following steps: S1: Turn on pure air conditioning mode; S2: The smoke baffle runs to the maximum stroke; S3: the second smoke exhaust channel is opened, and the exhaust air does not pass through the first heat exchanger; S4: Collect the chimney resistance at this time, and record it as the chimney resistance R0 of the user's home; S5: the first smoke exhaust channel is opened, and the exhaust air passes through the first heat exchanger; S6: Collect the wind resistance R at this time K ; S7: The wind resistance of the first heat exchanger is obtained as R L =R K -R0; S8: The resistance of the first heat exchanger increases by ΔR=R L -R L0 , where R L0 is the initial resistance of the first heat exchanger; S9: When the smoke shield is slightly opened, the resistance is corrected to R set =R set -ΔR; S10: Arrival of new correction value R set The smoke baffle stops moving.

2. The smoke baffle control method of the air-conditioning type range hood according to claim 1, characterized in that: In step S1, the air conditioning gear is kept constant.

3. The smoke baffle control method of the air-conditioning type range hood according to claim 1, characterized in that: The smoke exhaust channel and the air outlet channel (5) are both arranged above the range fumes suction fan (2), and the smoke exhaust channel and the air outlet channel (5) are arranged adjacent to each other on the left and right.

4. The smoke baffle control method of the air-conditioning type range hood according to claim 1, characterized in that: The compressor (9) is installed inside the casing (1), and the compressor (9) is located outside the air outlet channel (5) and the smoke exhaust channel.

5. The smoke baffle control method of the air-conditioning type range hood according to claim 1, characterized in that: An electrostatic purification device (12) is installed in the first smoke exhaust channel (41), and along the flow direction of the oil smoke, the electrostatic purification device (12) is arranged upstream of the first heat exchanger (7).

6. The smoke baffle control method of the air-conditioning type range hood according to claim 1, characterized in that: An air conditioner indoor unit (11) is installed in the casing (1), the air conditioner indoor unit (11) comprises an air outlet fan (111) and the second heat exchanger (8), and the air conditioner indoor unit (11) has a return air port (112) and an air conditioner outlet (113).

7. The smoke baffle control method of the air-conditioning type range hood according to claim 1, characterized in that: The first smoke exhaust channel (41) has an independent first smoke exhaust port (43), the second smoke exhaust channel (42) has an independent second smoke exhaust port (44), a smoke pipe (13) is installed on the top of the housing (1), the smoke pipe (13) comprises a first smoke inlet (131), a second smoke inlet (132) and a smoke outlet (133), the first smoke inlet (131) is connected to the first smoke exhaust port (43), and the second smoke inlet (132) is connected to the second smoke exhaust port (44).

8. The method for controlling a smoke baffle of an air-conditioning type range hood according to any one of claims 1 to 7, characterized in that: The first heat exchanger (7) is a condenser, and the second heat exchanger (8) is an evaporator.

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