Kitchen air conditioning system and control method thereof

Abstract

A kitchen air conditioning system and control method thereof include a fume extraction assembly having an air outlet in fluid communication with the kitchen interior, a condenser disposed within the exhaust duct, and an evaporator disposed within the exhaust duct. A water collection container is installed within the housing to collect condensed water condensed on the evaporator surface. The water collection container includes a first water box and a second water box connected at the top. The first water box houses a first water pump, while the second water box houses a second water pump and a float switch. A liquid distributor is also installed within the exhaust duct to distribute water to the condenser. The water outlets of the first and second water pumps are both connected to the water inlet of the liquid distributor. During operation, the system cools the condenser, improving its heat exchange efficiency, while eliminating the need for a condensed water discharge device. Furthermore, by providing a centrifugal pump and a submersible pump, respectively, within the first and second water boxes, and cooperating with the float switch in the second water box, the system can successfully implement energy efficiency testing for the air conditioner.

Description

Technical Field

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

[0002] The kitchen is the primary place where people cook, and the quality of the kitchen air environment directly impacts the cooking experience. Kitchens are hot in the summer and cold in the winter, creating a need for both cooling and heating. To address this, various kitchen air conditioners have been developed to cool the kitchen air in the summer and provide warm air in the winter, enhancing cooking comfort. To improve integration, air-conditioned range hoods have been invented. These add an air conditioning component to the range hood platform, performing all the functions of a range hood while also providing air conditioning. However, these air-conditioned range hoods often simply combine the indoor unit of a traditional air conditioner with the functions of a traditional range hood, while the outdoor unit still needs to be installed separately outdoors. This approach to range hood integration is insufficient, installation is cumbersome, and the piping and wiring connecting the indoor and outdoor units can damage the wall. Furthermore, existing kitchen air conditioners and range hoods operate independently, preventing them from being linked. Heat generated by the kitchen air conditioner cannot be discharged outdoors through the range hood's fan. Therefore, how to remove heat generated by the kitchen air conditioner through the range hood has become a pressing issue.

[0003] In addition, when the range hood is in use, condensation forms on the evaporator surface. Currently, this is typically discharged directly outdoors through a drainpipe, requiring an external water pipe. This not only increases installation costs, but also causes condensation to easily accumulate, leading to localized leaks. It can also cause long-term erosion of the user's exterior walls and dripping into the external environment. Furthermore, with both the range hood and the air conditioner turned on, the air conditioner energy efficiency test typically requires approximately 30 minutes of stable operation. However, during the test, insufficient condensation initially forms on the evaporator surface, leaving no condensation in the water collection container. This condensation must be accumulated drop by drop before being processed and evaporated, leading to unstable air conditioner energy efficiency and cooling. Summary of the Invention

[0004] The first technical problem to be solved by the present invention is to provide a kitchen air conditioning system that can utilize air conditioning condensed water to dissipate heat from the condenser 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 control method for a kitchen air conditioning system that can realize air conditioning energy efficiency testing 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 as follows: the kitchen air conditioning system includes an air conditioning component and an oil fume suction component, the air conditioning component includes a compressor, a condenser and an evaporator, the compressor, condenser and evaporator are connected by a refrigerant pipeline, the oil fume suction component includes a casing and a smoke exhaust channel arranged in the casing, characterized in that an air outlet channel is also provided in the casing, the air outlet of the air outlet channel is fluidically connected to the kitchen room, the condenser is arranged in the smoke exhaust channel, the evaporator is arranged in the air outlet channel, a water receiving container for collecting condensed water condensed on the surface of the evaporator is installed in the casing, the water receiving container includes a first water box and a second water box connected at the top, a first water pump is installed in the first water box, a second water pump and a float switch are installed in the second water box, and a liquid distributor for distributing water to the condenser is also installed in the smoke exhaust channel, and the water outlet of the first water pump and the water outlet of the second water pump are both connected to the water inlet of the liquid distributor.

[0007] Preferably, the condensed water condensed on the surface of the evaporator flows into the first water box, the first water pump is a centrifugal pump, and the second water pump is a submersible pump.

[0008] Further preferably, the bottom of the first water box is higher than the bottom of the second water box.

[0009] In order to make the internal layout of the range hood more reasonable, a range hood fan is installed inside the casing. The smoke exhaust channel and the air outlet channel are arranged above the range hood and are distributed left and right with respect to each other. Along the direction of oil smoke flow, the smoke exhaust channel is arranged downstream of the air outlet of the range hood fan.

[0010] To prevent condensed water flowing down the condenser from remaining inside the range hood and damaging other components, a drain port is provided at the bottom of the exhaust channel. The lower end of the condenser is located above the drain port, and a water inlet is provided on the volute wall of the range hood fan. The drain port and the water inlet are connected by a water pipe. This allows condensed water flowing from the condenser surface to flow into the fan volute, cleaning the fan impeller and volute, achieving effective utilization of the condensed water.

[0011] More preferably, an oil cup is installed at the bottom of the housing, and a water leakage port connected to the oil cup is opened at the bottom of the volute of the range hood fan. In this way, after the condensed water cleans the fan, the sewage can flow into the oil cup.

[0012] Further preferably, the exhaust passage includes a first exhaust passage and a second exhaust passage, with dampers installed at the entrances of the first and second exhaust passages for switching one of the first and second exhaust passages to communicate with the air outlet of the range fumes extraction fan, and the condenser is disposed within the first exhaust passage. Thus, the first exhaust passage constitutes a heat dissipation passage, and the second exhaust passage constitutes a direct exhaust passage. In different operating modes, the dampers are switched so that the fumes can be discharged through different exhaust passages.

[0013] In order to prevent the oil smoke from contaminating the condenser, an electrostatic purification device is further 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.

[0014] In order to ensure smooth air discharge from the air outlet channel, an air outlet fan is installed in the air outlet channel, and along the air flow direction, the air outlet fan is arranged downstream of the evaporator. When working, cold air is blown out from the air outlet of the air outlet fan to replenish the kitchen.

[0015] In order to make the system structure more compact and the installation more convenient, the compressor is integrated on the casing.

[0016] The technical solution adopted by the present invention to solve the second technical problem is: a control method for a kitchen air conditioning system, characterized by comprising the following steps:

[0017] S1, start;

[0018] S2, determining whether the air conditioner is turned on;

[0019] If yes, proceed to step S3;

[0020] If not, the range hood is turned on and the process proceeds to step S8;

[0021] S3, determining whether to enable the energy efficiency measurement mode;

[0022] If yes, the user adds water and then proceeds to step S4;

[0023] If not, proceed to step S5;

[0024] S4, the submersible pump is turned on, the water from the liquid distributor evaporates, and then the process goes to step S6;

[0025] S5. The centrifugal pump is turned on, the water from the liquid distributor evaporates, and then the process proceeds to step S7;

[0026] S6, determine whether the float switch is disconnected;

[0027] If yes, the submersible pump is turned off, the centrifugal pump is turned on, and the process proceeds to step S7;

[0028] If not, return to step S4;

[0029] S7, determining whether the air mode is off;

[0030] If yes, proceed to step S8;

[0031] If not, return to step S5;

[0032] S8, end.

[0033] Compared with the prior art, the advantages of the present invention are: the condenser of the kitchen air conditioning system is arranged in the smoke exhaust channel, and the evaporator is arranged in the air outlet channel. The oil smoke can take away the heat of the condenser, and the condensed water condensed on the surface of the evaporator can be transported to the condenser. 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, thereby realizing the effective utilization of the condensed water. On the other hand, the condensed water can be evaporated after being heated by the condenser and then discharged from the smoke exhaust channel, eliminating the need for a condensed water discharge device. In addition, the system can smoothly realize the energy efficiency test of the air conditioner by respectively arranging a centrifugal pump and a submersible pump in the first water box and the second water box, and cooperating with the judgment of the float switch in the second water box. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a structural diagram of a range hood according to an embodiment of the present invention;

[0035] Figure 2 Schematic diagram of the structure of an air conditioning system according to an embodiment of the present invention;

[0036] Figure 3 for Figure 2 A magnified schematic diagram of part A;

[0037] Figure 4 Schematic diagram of the principle of an air conditioning assembly according to an embodiment of the present invention;

[0038] Figure 5 This is a control flow chart of an air conditioning system according to an embodiment of the present invention. DETAILED DESCRIPTION

[0039] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0040] like Figures 1 to 4As shown, the kitchen air conditioning system of this embodiment includes an air conditioning assembly and a range hood extraction assembly. The air conditioning assembly includes a compressor 11, a condenser 12, and an evaporator 13. The compressor 11, condenser 12, and evaporator 13 are interconnected via a refrigerant pipeline 14. A throttling device 15 is installed on the refrigerant pipeline 14 between the condenser 12 and the evaporator 13. The specific operating principle of the air conditioning assembly 1 is the same as that of conventional air conditioners and will not be further described here.

[0041] The oil fume extraction assembly of this embodiment comprises a housing 20, in which an oil fume extraction fan 21 is provided. The oil fume extraction fan 21 of this embodiment is a centrifugal fan installed at the lower part of the housing 20. The upper part of the housing 20 is provided with a mutually isolated exhaust channel 22 and an air outlet channel 23. Along the direction of oil fume flow, the exhaust channel 22 is provided downstream of the air outlet of the oil fume extraction fan 21. Figure 1 The direction indicated by the middle arrow A is right, and the air outlet channel 23 is located on the left side of the smoke exhaust channel 22. The compressor 11 is installed inside the casing 20 and is located below the air outlet channel 23.

[0042] The smoke exhaust passage 22 of this embodiment includes a first smoke exhaust passage 221 and a second smoke exhaust passage 222. A damper 25 is installed at the entrance of the first smoke exhaust passage 221 and the second smoke exhaust passage 222 for switching one of the first smoke exhaust passage 221 and the second smoke exhaust passage 222 to communicate with the air outlet of the range fume extraction fan 21. In this embodiment, a condenser 12 and an electrostatic purification device 26 are installed within the first smoke exhaust passage 221. The condenser 12 is tilted relative to a vertical plane, and the electrostatic purification device 26 is located upstream of the condenser 12 along the direction of oil fume flow, thereby preventing oil fume from contaminating the condenser 12. In addition to the electrostatic purification device 26, other types of oil fume purification devices may also be used.

[0043] The evaporator 13 and the air outlet fan 24 are installed in the air outlet channel 23. The air inlet of the air outlet channel 23 is fluidically connected to the inside of the kitchen or to the outside of the kitchen. The air outlet of the air outlet channel 23 is fluidically connected to the inside of the kitchen. Along the direction of air flow, the evaporator 13 is located upstream of the air outlet fan 24.

[0044] In this embodiment, a water collection container 3 is installed within the housing 20 for collecting condensed water condensed on the surface of the evaporator 13. The water collection container 3 includes a first water box 31 and a second water box 32, which are adjacent to each other and connected at the top. A first water pump 33 is installed within the first water box 31, and a second water pump 34 and a float switch 35 are installed within the second water box 32. A liquid distributor 4 is also installed within the smoke exhaust duct 22 for distributing water to the condenser 12. The liquid distributor 4 is installed at the top of the condenser 12 and includes a water inlet and a water outlet. The specific structure of the liquid distributor 4 can be referenced by existing liquid distributors and will not be described in detail here. The water outlets of the first water pump 33 and the second water pump 34 are both connected to the water inlet of the liquid distributor 4. In this way, the condensed water pumped from the first water pump 33 and the second water pump 34 can be transported to the surface of the condenser 12, allowing the condensed water to flow downward along the surface of the condenser 12.

[0045] In this embodiment, the bottom of the first water box 31 is higher than the bottom of the second water box 32. Condensed water 2 condensed on the evaporator 13, i.e., air conditioning condensed water, drips into the first water box 31. The first water pump 33 is a centrifugal pump, and the second water pump 34 is a submersible pump. The centrifugal pump can run idle, but the submersible pump cannot.

[0046] A drain port 220 is defined at the bottom of the exhaust duct 22. The lower end of the condenser 12 is positioned above drain port 220. A water inlet 211 is defined on the volute wall of the range hood fan 21. These two ports are connected via a water pipe. This allows unevaporated condensed water to flow down the surface of the condenser 12 and into the range hood fan 21 through drain port 220, thereby cleaning the volute and impeller. Furthermore, an oil cup 5 is mounted at the bottom of the housing 20. A drain port 212 is defined at the bottom of the volute of the range hood fan 21, communicating with the oil cup 5. After the condensed water cleans the fan, the wastewater flows out of the drain port 212 and into the oil cup 5.

[0047] The working principle of the kitchen air conditioning system is as follows:

[0048] When both the range hood and the air conditioner are turned on, the fumes are discharged through the first exhaust channel 221. In addition, the fumes flow across the surface of the condenser 12, which can cool and dissipate the heat of the condenser 12, reducing 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 air outlet fan 24, cold air is blown out from the air outlet of the air outlet channel 23 into the kitchen. The condensed water condensed on the surface of the evaporator 13 enters the water receiving container 3, and the condensed water can be transported to the liquid distributor 4, and then flows out of the liquid distributor 4 to the surface of the condenser 12, cooling the condenser 12 to improve its heat exchange effect.

[0049] When the range hood is only turned on, the oil smoke is discharged outward through the second smoke exhaust channel 222 .

[0050] like Figure 5 As shown, the control method of the kitchen air conditioning system of this embodiment includes the following steps:

[0051] S1, start;

[0052] S2, determining whether the air conditioner is turned on;

[0053] If yes, proceed to step S3;

[0054] If not, the range hood is turned on and the process proceeds to step S8;

[0055] S3, determining whether to enable the energy efficiency measurement mode;

[0056] If yes, the user adds water and then proceeds to step S4;

[0057] If not, proceed to step S5;

[0058] S4, the submersible pump is turned on, the water from the liquid distributor evaporates, and then the process goes to step S6;

[0059] S5. The centrifugal pump is turned on, the water from the liquid distributor evaporates, and then the process proceeds to step S7;

[0060] S6, determine whether the float switch is disconnected;

[0061] If yes, the submersible pump is turned off, the centrifugal pump is turned on, and the process proceeds to step S7;

[0062] If not, return to step S4;

[0063] S7, determining whether the air mode is off;

[0064] If yes, proceed to step S8;

[0065] If not, return to step S5;

[0066] S8, end.

[0067] During the air conditioner energy efficiency test, at the beginning of the machine operation, the water collection container 3 was manually filled with water, that is, both the first water box 31 and the second water box 32 were filled with water. During operation, the second water pump 34 (submersible pump) operated, and the condensed water in the second water box 32 was transported to the liquid distributor 4. The condensed water evaporated on the surface of the condenser 12, thus meeting the energy efficiency requirements. After 1-2 hours of operation, the water level in the second water box 32 slowly dropped. When the float switch 35 opened, the second water pump 34 (submersible pump) stopped operating, and the first water pump 33 (centrifugal pump) began to operate. The condensed water in the first water box 31 was transported to the liquid distributor 4, and the condensed water evaporated on the surface of the condenser 12. During parallel operation, no water was manually added. The condensed water flowed into the first water box 31. The first water pump 33 (centrifugal pump) pumped as much water as it could, and then transported it through the liquid distributor 4 to the surface of the condenser 12 for evaporation.

[0068] The "fluid communication" referred to in the present invention refers to the spatial position relationship between two components or parts (hereinafter collectively referred to as the first part and the second part), 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, conduit, 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 kitchen air conditioning system, comprising an air conditioning component and an oil fume extraction component, wherein the air conditioning component comprises a compressor (11), a condenser (12) and an evaporator (13), wherein the compressor (11), the condenser (12) and the evaporator (13) are connected via a refrigerant pipeline (14), and the oil fume extraction component comprises a housing (20) and an exhaust passage (22) provided in the housing, characterized in that: An air outlet channel (23) is further provided in the housing (20), and an air outlet of the air outlet channel (23) is fluidically connected to the kitchen interior. The condenser (12) is provided in the smoke exhaust channel (22), and the evaporator (13) is provided in the air outlet channel (23). A water receiving container (3) for collecting condensed water condensed on the surface of the evaporator (13) is installed in the housing (20). The water receiving container (3) includes a first water box (31) and a second water box (32) connected at the top. A first water pump (33) is installed in the first water box (31). A second water pump (34) and a float switch (35) are installed in the second water box (32), and a liquid distributor (4) for distributing water to the condenser (12) is also installed in the smoke exhaust channel (22). The water outlet of the first water pump (33) and the water outlet of the second water pump (34) are both connected to the water inlet of the liquid distributor (4), and the condensed water condensed on the surface of the evaporator (13) flows into the first water box (31). The first water pump (33) is a centrifugal pump, and the second water pump (34) is a submersible pump. The control method of the kitchen air conditioning system includes the following steps: S1, start; S2, determining whether the air conditioner is turned on; If yes, proceed to step S3; If not, the range hood is turned on and the process proceeds to step S8; S3, determining whether to enable the energy efficiency measurement mode; If yes, the user adds water and then proceeds to step S4; If not, proceed to step S5; S4, the submersible pump is turned on, the water from the liquid distributor evaporates, and then the process goes to step S6; S5. The centrifugal pump is turned on, the water from the liquid distributor evaporates, and then the process proceeds to step S7; S6, determine whether the float switch is disconnected; If yes, the submersible pump is turned off, the centrifugal pump is turned on, and the process proceeds to step S7; If not, return to step S4; S7, determining whether the air mode is off; If yes, proceed to step S8; If not, return to step S5; S8, end.

2. The kitchen air conditioning system according to claim 1, characterized in that: The bottom of the first water box (31) is higher than the bottom of the second water box (32).

3. The kitchen air conditioning system according to claim 1, characterized in that: A fume extraction fan (21) is installed inside the housing (20), and the fume exhaust channel (22) and the air outlet channel (23) are arranged above the fume extraction fan (21) and are distributed left and right with respect to each other. Along the direction of fume flow, the fume exhaust channel (22) is arranged downstream of the air outlet of the fume extraction fan (21).

4. The kitchen air conditioning system according to claim 3, characterized in that: A drain port (220) is provided at the bottom of the smoke exhaust channel (22), the lower end of the condenser (12) is arranged above the drain port (220), a water inlet (211) is provided on the volute wall of the fume extraction fan (21), and the drain port (220) is connected to the water inlet (211) through a water pipe.

5. The kitchen air conditioning system according to claim 4, characterized in that: An oil cup (5) is installed at the bottom of the casing (20), and a water leakage port (212) connected to the oil cup (5) is opened at the bottom of the volute of the range hood fan (21).

6. The kitchen air conditioning system according to claim 3, characterized in that: The smoke exhaust channel (22) comprises a first smoke exhaust channel (221) and a second smoke exhaust channel (222). An air valve (25) for switching one of the first smoke exhaust channel (221) and the second smoke exhaust channel (222) to be connected to the air outlet of the range fumes exhaust fan (21) is installed at the entrance of the first smoke exhaust channel (221) and the second smoke exhaust channel (222). The condenser (12) is arranged in the first smoke exhaust channel (221).

7. The kitchen air conditioning system according to claim 6, characterized in that: An electrostatic purification device (26) is also installed in the first smoke exhaust channel (221), and the electrostatic purification device (26) is arranged upstream of the condenser (12) along the flow direction of the oil smoke.

8. The kitchen air conditioning system according to claim 1, characterized in that: An air outlet fan (24) is installed in the air outlet channel (23), and the air outlet fan (24) is arranged downstream of the evaporator (13) along the air flow direction.

9. The kitchen air conditioning system according to claim 1, characterized in that: The compressor (11) is integrated on the casing (20).

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