Kitchen air conditioning system and control method thereof

Abstract

A kitchen air conditioning system and a control method thereof, comprising an air conditioning component and an oil fume suction component, wherein the air conditioning component comprises a compressor, a first heat exchanger and a second heat exchanger, the oil fume suction component comprises a first fan and an exhaust passage arranged at the rear end of the first fan, the first heat exchanger is arranged in the exhaust passage, a condensate collection device and a spray or atomization device are installed in the exhaust passage, the condensate collection device is used to collect the condensate generated by the first heat exchanger, and the spray or atomization device is used to spray or atomize the condensate collected by the condensate collection device into the exhaust passage. In the heating mode of the kitchen air conditioning system, the condensate generated by the first heat exchanger can be sprayed or atomized into the exhaust passage to avoid excessive condensate remaining in the exhaust passage to affect the exhaust effect. In addition, the control method can also judge the condensate blockage by the fan speed, and can adjust the fan speed accordingly to blow the condensate out of the exhaust passage.

Description

Technical Field

[0001] The invention relates to an air conditioning system, in particular to a kitchen air conditioning system and a control method thereof. Background Art

[0002] The kitchen is the main place for people to cook. The quality of the kitchen air environment directly affects the mood of the cook. Especially in the hot summer, the hot and stuffy environment of the kitchen brings great discomfort to the cook. For this reason, people have invented various kitchen air conditioners to cool the kitchen air. Existing kitchen air conditioners are often independent of the kitchen range hood, and there is no mutual coordination between the two. For the integrated kitchen air conditioner, due to the limited installation space, the heat generated during the working process cannot be taken away in time and effectively, thus affecting the use effect of the air conditioner. For this reason, the applicant has previously invented a kitchen air conditioning system in which a heat exchanger is installed inside the range hood. In the cooling mode, the heat exchanger inside the range hood is used as a condenser, and the heat generated by it can be taken away by the oil smoke, thereby improving the energy efficiency of the air conditioner. However, in the heating mode, the heat exchanger inside the range hood is used as an evaporator. When moisture condenses on the heat exchanger, if it cannot be discharged in time, it will cause the range hood air duct to be blocked, affecting the exhaust effect of the oil smoke, and will also affect the heat exchange effect of the heat exchanger, thereby reducing the refrigeration performance of the refrigeration system. Summary of the invention

[0003] The first technical problem to be solved by the present invention is to provide a kitchen air conditioning system for preventing the condensed water generated by the internal heat exchanger of the range hood from affecting the exhaust effect in view of the above-mentioned existing technical status.

[0004] The second technical problem to be solved by the present invention is to provide a control method for a kitchen air conditioning system that can smoothly discharge condensed water through intelligent control of the fan speed in response to the above-mentioned existing technical status.

[0005] The technical solution adopted by the present invention to solve the above-mentioned first technical problem is: the kitchen air conditioning system includes an air conditioning component and an oil fume suction component, the air conditioning component includes a compressor, a first heat exchanger and a second heat exchanger, the compressor, the first heat exchanger and the second heat exchanger are connected through a refrigerant pipeline, a four-way valve is installed on the refrigerant pipeline, the oil fume suction component includes a first fan and a smoke exhaust channel arranged at the rear end of the first fan, and is characterized in that: the first heat exchanger is arranged in the smoke exhaust channel, and a condensate collection device and a spray or atomization device are installed in the smoke exhaust channel, the condensate collection device is used to collect the condensate generated by the first heat exchanger, and the spray or atomization device is used to spray or atomize the condensate collected by the condensate collection device into the smoke exhaust channel.

[0006] In order to facilitate smooth outflow of condensed water generated by the first heat exchanger, the first heat exchanger is arranged to be inclined relative to the vertical plane.

[0007] The first heat exchanger can have a variety of structures. Preferably, the first heat exchanger includes a left liquid collecting pipe, a right liquid collecting pipe and a transverse pipe that are interconnected. The transverse pipe is distributed between the left liquid collecting pipe and the right liquid collecting pipe at intervals. Liquid guide plates are provided between adjacent transverse pipes. It also includes vertical guide strips installed on the transverse pipes and distributed at intervals on the left and right. In this way, the condensed water attached to the first heat exchanger can flow down smoothly along the vertical guide strips.

[0008] In order to further improve the flow guiding effect, the liquid guiding pieces located on the same layer are of an integrated structure, and the liquid guiding pieces are distributed in a wave shape from left to right.

[0009] In order to prevent the oil smoke from polluting the first heat exchanger, an oil smoke purification device is installed in the exhaust passage, and the oil smoke purification device is arranged at the front end of the first heat exchanger.

[0010] Further preferably, an indoor unit is installed in the kitchen, the second heat exchanger is installed in the indoor unit, the indoor unit is provided with an air inlet and an air outlet, the air inlet is connected to the outside, and the air outlet is connected to the kitchen.

[0011] In order to make full use of the corner of the kitchen, the indoor unit is installed in the corner of the kitchen cabinet, and the compressor is integrated on the range fumes suction component or on the indoor unit.

[0012] In order to allow the air passing through the second heat exchanger to be smoothly replenished into the kitchen, a second fan is installed in the indoor unit near the air outlet, and the second fan is located between the second heat exchanger and the air outlet.

[0013] The condensate collecting device may have various structures. Preferably, the condensate collecting device includes a water receiving tray and a liquid guiding pipe. The water receiving tray is arranged below the first heat exchanger, and the liquid guiding pipe is connected between the water receiving tray and the spraying or atomizing device.

[0014] The technical solution adopted by the present invention to solve the second technical problem is: the control method of the kitchen air conditioning system is characterized by comprising the following steps:

[0015] ①. The system starts running;

[0016] ②. The first fan operates at the preset gear position P1;

[0017] ③. Determine whether the speed Z1 of the first fan is greater than the warning speed Z2;

[0018] ④. If Z1>Z2, the first fan will run at the higher gear P2 for t1 and go to step ⑤;

[0019] If Z1≤Z2, return to step ③;

[0020] ⑤. The first fan continues to operate at P1 gear;

[0021] ⑥. Determine whether to shut down the first fan;

[0022] If yes, the system ends operation;

[0023] If not, go to step ③.

[0024] Compared with the prior art, the advantages of the present invention are: the kitchen air conditioning system sets the first heat exchanger of the air conditioning component in the exhaust channel of the range fumes suction component. In the heating mode, the condensed water generated by the first heat exchanger can be sprayed or atomized into the exhaust channel through the condensed water collection device, i.e., the spraying or atomizing device, to avoid excessive condensed water remaining in the exhaust channel to affect the exhaust effect. In addition, the control method can also intelligently judge the condensed water blockage situation through the fan speed, and can adjust the fan speed accordingly to blow the condensed water out of the exhaust channel smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0026] Figure 2 is a schematic structural diagram of a first heat exchanger according to an embodiment of the present invention;

[0027] Figure 3 for Figure 2 A magnified schematic diagram of part A;

[0028] Figure 4 A control logic diagram of a control method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below with reference to the accompanying drawings.

[0030] like Figure 1 As shown, the kitchen air conditioning system of this embodiment includes an air conditioning component 1 and a fume extraction component 2. The air conditioning component 1 specifically includes a compressor 11, a first heat exchanger 12 and a second heat exchanger 13. The compressor 11, the first heat exchanger 12 and the second heat exchanger 13 are connected through a refrigerant pipeline 14. A four-way valve 15 is installed on the refrigerant pipeline 14. By switching the four-way valve 15, the air conditioning working mode is switched. The working principle of the air conditioning component 1 is the same as that of the existing air conditioner and is not described in detail here.

[0031] In this embodiment, an indoor unit 6 is installed at a corner of the kitchen upper cabinet 7. The indoor unit 6 has an air inlet 61 and an air outlet 62. The air inlet 61 is connected to the outside, and the air outlet 62 is connected to the kitchen. The second heat exchanger 13 is installed in the indoor unit 6. In addition, a second fan 63 is also installed in the indoor unit 6. The second fan 63 is located between the second heat exchanger 13 and the air outlet 62, so as to quickly blow the air flowing through the second heat exchanger 13 to the kitchen.

[0032] The oil fume suction component 2 has a housing 20, a first fan 21 is installed in the housing 20, and a smoke exhaust passage 22 is provided inside the housing 20 and at the rear end of the first fan 21. In this embodiment, the compressor 11 and the first heat exchanger 12 are integrated on the oil fume suction component 2, and the first heat exchanger 12 is arranged in the smoke exhaust passage 22. In order to prevent oil fume from polluting the first heat exchanger 12, an oil fume purification device 5 is also installed in the smoke exhaust passage 22, and the oil fume purification device 5 is arranged at the front end of the first heat exchanger 12. Generally, the oil fume purification device 5 can adopt various front-end electrostatic purification devices disclosed in the prior art, and the specific structure will not be described in detail here.

[0033] In this embodiment, the first heat exchanger 12 is arranged at an angle relative to the vertical plane, and a condensate collecting device 3 and a spray or atomizing device 4 are installed in the smoke exhaust passage 22. The condensate collecting device 3 is used to collect the condensate generated by the first heat exchanger 12, and the spray or atomizing device 4 is used to spray or atomize the condensate collected by the condensate collecting device 3 into the smoke exhaust passage 22. Specifically, the condensate collecting device 3 includes a water receiving tray 31 and a liquid guide tube 32. The water receiving tray 31 is arranged below the first heat exchanger 12, and the liquid guide tube 32 is connected between the water receiving tray 31 and the spray or atomizing device 4.

[0034] like Figure 2 and Figure 3 As shown, the first heat exchanger 12 of this embodiment includes a left liquid collecting pipe 121, a right liquid collecting pipe 122 and a transverse pipe 123 which are interconnected. The refrigerant pipeline 14 can be installed on the left liquid collecting pipe 121 or the right liquid collecting pipe 122. The transverse pipe 123 adopts a flat tube and is distributed between the left liquid collecting pipe 121 and the right liquid collecting pipe 122 at intervals up and down. A liquid guide sheet 124 is provided between adjacent transverse pipes 123. In this embodiment, the liquid guide sheets 124 located on the same layer are of an integrated structure, and the liquid guide sheets 124 are distributed in a wave shape from left to right, which is convenient for the discharge of condensed water. In addition, vertical guide strips 125 distributed at intervals left and right are also installed on the transverse pipe 123.

[0035] When the system is working in cooling mode, the first heat exchanger 12 is used as a condenser and the second heat exchanger 13 is used as an evaporator. Cold air is blown into the kitchen from the air outlet 62 of the indoor unit 6. At the same time, the oil smoke discharged from the smoke exhaust channel 22 can take away the heat generated by the first heat exchanger 23 to improve its heat exchange effect, thereby improving the air conditioning energy efficiency.

[0036] When the system is working in heating mode, the first heat exchanger 12 is used as an evaporator and the second heat exchanger 13 is used as a condenser. Warm air is blown out from the air outlet 62 of the indoor unit 6 into the kitchen room. At the same time, condensed water is generated on the first heat exchanger 12 located in the smoke exhaust channel 22. The condensed water flows into the water receiving tray 31 along the liquid guide plate 124 and the vertical guide strip 125, and then flows into the spray or atomization device 4 through the liquid guide pipe 32. After being sprayed or atomized by the spray or atomization device 4, the condensed water is discharged out of the smoke exhaust channel 22 along with the oil smoke, thereby preventing the condensed water from affecting the heat exchange effect of the first heat exchanger 12 and the smoke exhaust effect of the smoke exhaust channel 22.

[0037] like Figure 4 As shown, the control method of the kitchen air conditioning system of this embodiment includes the following steps:

[0038] ①. The system starts running;

[0039] ②. The first fan operates at the preset gear position P1;

[0040] ③. Determine whether the speed Z1 of the first fan is greater than the warning speed Z2;

[0041] ④. If Z1>Z2, the first fan will run at the higher gear P2 for t1 and go to step ⑤;

[0042] If Z1≤Z2, return to step ③;

[0043] ⑤. The first fan continues to operate at P1 gear;

[0044] ⑥. Determine whether to shut down the first fan;

[0045] If yes, the system ends operation;

[0046] If not, go to step ③.

[0047] The first fan 21 of this embodiment is a DC fan. When the DC motor is running, if the gear position remains unchanged, the resistance increases, which leads to an increase in the fan speed. Therefore, when the first heat exchanger 12 is in the P1 gear position, the corresponding speed is Z1 when there is no condensed water. If the P1 gear position remains unchanged, when more condensed water accumulates on the first heat exchanger 12, the warning speed Z2 will be reached. In the case of the warning speed Z2, the first fan 21 must be operated at a higher gear P2, so as to blow the condensed water out of the smoke exhaust channel 22 more smoothly.

Claims

1. A control method for a kitchen air conditioning system, the kitchen air conditioning system comprising an air conditioning component (1) and an oil fume suction component (2), the air conditioning component (1) comprising a compressor (11), a first heat exchanger (12) and a second heat exchanger (13), the compressor (11), the first heat exchanger (12) and the second heat exchanger (13) being connected via a refrigerant pipeline (14), a four-way valve (15) being installed on the refrigerant pipeline (14), the oil fume suction component (2) comprising a first fan (21) and an exhaust passage (22) arranged at the rear end of the first fan, characterized in that: The first heat exchanger (12) is arranged in the smoke exhaust passage (22), and a condensate collecting device (3) and a spraying or atomizing device (4) are installed in the smoke exhaust passage (22). The condensate collecting device (3) is used to collect condensate generated by the first heat exchanger (12), and the spraying or atomizing device (4) is used to spray or atomize the condensate collected by the condensate collecting device (3) into the smoke exhaust passage (22). The first heat exchanger (12) comprises a left liquid collecting pipe (121) and a left liquid collecting pipe (122) which are interconnected. A right side liquid collecting pipe (122) and a transverse pipe (123), wherein the transverse pipe (123) is spaced apart vertically between the left side liquid collecting pipe (121) and the right side liquid collecting pipe (122), a liquid guide sheet (124) is provided between adjacent transverse pipes (123), and also includes vertical guide strips (125) installed on the transverse pipe (123) and spaced apart horizontally, the liquid guide sheets (124) located on the same layer are in an integrated structure, and the liquid guide sheets (124) are distributed in a wave shape from left to right. The control method comprises the following steps: ①. The system starts running; ②. The first fan operates at the preset gear position P1; ③. Determine whether the speed Z1 of the first fan is greater than the warning speed Z2; ④. If Z1>Z2, the first fan will run at the higher gear P2 for t1 and go to step ⑤; If Z1≤Z2, return to step ③; ⑤. The first fan continues to operate at P1 gear; ⑥. Determine whether to shut down the first fan; If yes, the system ends operation; If not, go to step ③.

2. The control method of the kitchen air conditioning system according to claim 1, characterized in that: The first heat exchanger (12) is arranged inclined relative to a vertical plane.

3. The control method of the kitchen air conditioning system according to claim 1, characterized in that: An oil fume purification device (5) is installed in the exhaust passage (22), and the oil fume purification device (5) is arranged at the front end of the first heat exchanger (12).

4. The control method of the kitchen air conditioning system according to claim 1, characterized in that: An indoor unit (6) is installed in the kitchen, and the second heat exchanger (13) is installed in the indoor unit (6). The indoor unit (6) is provided with an air inlet (61) and an air outlet (62), wherein the air inlet (61) is connected to the outside, and the air outlet (62) is connected to the kitchen.

5. The control method of the kitchen air conditioning system according to claim 4, characterized in that: The internal unit (6) is installed in a corner of a kitchen upper cabinet (7), and the compressor (11) is integrated on the range fumes suction component (2) or on the internal unit (6).

6. The control method of the kitchen air conditioning system according to claim 4, characterized in that: A second fan (63) is installed in the internal unit (6) at a position close to the air outlet (62), and the second fan (63) is located between the second heat exchanger (13) and the air outlet (62).

7. The control method of the kitchen air conditioning system according to claim 1, characterized in that: The condensed water collecting device (3) comprises a water receiving tray (31) and a liquid guiding pipe (32); the water receiving tray (31) is arranged below the first heat exchanger (12); and the liquid guiding pipe (32) is connected between the water receiving tray (31) and the spraying or atomizing device (4).

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