Kitchen air conditioning system and control method thereof

Abstract

According to the kitchen air conditioning system and the control method thereof, a compressor, an indoor unit module and a heat dissipation module are integrated on a range hood of the kitchen air conditioning system, the indoor unit module is provided with an indoor unit air duct, an evaporator and an indoor unit fan are arranged in the indoor unit air duct, the heat dissipation module is provided with a heat dissipation air duct, and a condenser and a heat dissipation fan are arranged in the heat dissipation air duct; the auxiliary heat exchanger is connected with the condenser in parallel, a valve is installed between the auxiliary heat exchanger and the indoor unit air duct, in the dehumidification mode, the valve is opened, heat of the auxiliary heat exchanger enters the indoor unit air duct and is mixed with air dehumidified by the indoor unit module, and in the humidification mode, the valve is opened, and the heat of the auxiliary heat exchanger is mixed with the air dehumidified by the indoor unit module. Condensed water condensed on the surface of the evaporator exchanges heat with the auxiliary heat exchanger after being accumulated, and hot air with humidity is generated and mixed with air in the air duct of the indoor unit. According to the kitchen air conditioning system, in the dehumidification mode, the air outlet temperature of the indoor unit can be increased, a user can experience the feeling of dehumidification without cooling, and in the humidification mode, the air outlet humidity can be increased, and the use experience of the user is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a kitchen air conditioning system, in particular to a kitchen air conditioning system and a control method thereof. BACKGROUND

[0002] In daily life and industrial production scenarios, air conditioners are the core equipment for adjusting indoor temperature and humidity environments. Among them, the dehumidification function as an important application mode of air conditioners is mainly used to solve the problems of difficult drying of clothes, mildewing of furniture, and discomfort of human body caused by indoor dampness in high humidity environment, especially in plum rain season, humid areas in the south or high humidity industrial sites, users rely heavily on dehumidification function. However, the current mainstream air conditioners on the market have a key technical pain point in the dehumidification mode: while achieving the dehumidification effect, the indoor temperature often drops significantly. The root cause of this problem lies in the dehumidification principle of traditional air conditioners. In the dehumidification process, indoor air needs to flow through the evaporator with lower temperature, and the water vapor in the air condenses into water and is discharged outdoors to achieve the purpose of reducing humidity. However, in this process, the evaporator will also absorb the heat in the air, resulting in a decrease in indoor temperature. This phenomenon of dehumidification accompanied by temperature drop is in serious conflict with the core needs of users: the core demand of users for starting the dehumidification mode is to reduce the indoor humidity, not to change the indoor temperature. Especially in the spring and autumn seasons, when the initial indoor temperature is already in the comfortable range, the additional temperature drop in the dehumidification process will cause the indoor environment to become cold, affecting the user's comfort, and may force the user to additionally start the heating function to compensate for the temperature loss, increasing energy consumption and use cost.

[0003] To solve the above-mentioned problem of dehumidification accompanied by temperature drop, some manufacturers have proposed improvement schemes, for example, some use a scheme of adding a condenser at the rear end of the evaporator. This scheme releases heat through the condenser to reheat the air cooled by the evaporator, thereby offsetting the temperature loss in the dehumidification process, and theoretically achieving constant indoor temperature during dehumidification. However, this scheme has significant limitations: the additional heat exchanger will directly lead to an increase in the manufacturing cost of the air conditioner, including the material cost of the heat exchanger, the process cost of equipment assembly, and the transportation and installation cost caused by the increase in the volume of the air conditioner, which makes it difficult for this technology to be popularized in low-end air conditioner products, limiting its market application range.

[0004] At the same time, the existing air conditioning technology also faces another problem that has not been fully solved: in normal cooling or heating mode, air conditioners often only focus on temperature regulation accuracy, ignoring the control of indoor humidity, which can easily lead to indoor humidity being too low. Most current air conditioners lack dynamic monitoring and intelligent adjustment mechanism for indoor humidity, and cannot maintain indoor humidity within the human comfortable humidity range of 40%-60% while ensuring that the temperature meets the set requirements. SUMMARY

[0005] The first technical problem to be solved by the present application is to provide a kitchen air conditioning system capable of dehumidification without temperature drop and capable of increasing the humidity of the air outlet when an air conditioner is used.

[0006] The second technical problem to be solved by the present application is to provide a control method for the kitchen air conditioning system.

[0007] The technical solution adopted by the present application to solve the first technical problem is a kitchen air conditioning system comprising an extractor hood, a compressor, an indoor unit module and a heat dissipation module integrated on the extractor hood, the indoor unit module having an indoor unit air duct, the indoor unit air duct being provided with an evaporator and an indoor unit fan, the heat dissipation module having a heat dissipation air duct, the heat dissipation air duct being provided with a condenser and a heat dissipation fan, the compressor, the condenser and the evaporator being connected in communication through a refrigerant pipeline, characterized in that the system further comprises an auxiliary heat exchanger connected in parallel with the condenser, and a valve is installed between the auxiliary heat exchanger and the indoor unit air duct, in the dehumidification mode, the valve is opened, the heat of the auxiliary heat exchanger enters the interior of the indoor unit air duct and mixes with the air after dehumidification of the indoor unit module, in the humidification mode, the valve is opened, the condensed water accumulated on the surface of the evaporator exchanges heat with the auxiliary heat exchanger, generating hot air with humidity and mixing with the air in the indoor unit air duct.

[0008] In order to enable the auxiliary heat exchanger to provide better warming and humidifying effects on the air in the indoor unit air duct, in the open state of the valve, the auxiliary heat exchanger is arranged in the air duct between the indoor unit fan and the evaporator, and the indoor unit fan, the auxiliary heat exchanger and the evaporator are arranged in sequence along the airflow direction.

[0009] In order to enable the water storage cavity to be in communication with the water box and enable the auxiliary heat exchanger to achieve better heat exchange effect with the condensed water in the water storage cavity, the indoor unit module has a water storage cavity, the auxiliary heat exchanger is a heat exchange pipe arranged in the water storage cavity, a water outlet is formed in the bottom of the water storage cavity, a water box is installed inside the extractor hood, and the water outlet is connected in communication with the water box through a water outlet pipe.

[0010] Further preferably, a first float switch is installed in the water storage cavity, a water pipe stop valve is installed on the water outlet pipe, and a controller is further included, in the state that the first float switch is triggered, the controller controls the water pipe stop valve to be opened, and the condensed water in the water storage cavity flows into the water box through the water outlet pipe. In this way, the water quantity in the water storage cavity can be intelligently controlled under different working conditions.

[0011] Further preferably, in the dehumidification mode, the water pipe stop valve is opened, the condensed water in the water storage cavity flows into the water box through the water outlet pipe, and in the humidification mode, the water pipe stop valve is closed, the condensed water accumulates in the water storage cavity and exchanges heat with the auxiliary heat exchanger. In this way, in the dehumidification mode, the condensed water in the water storage cavity is discharged, avoiding the exchange of heat between the condensed water and the auxiliary heat exchanger, thereby improving the heating effect of the auxiliary heat exchanger on the indoor air duct. In the humidification mode, enough condensed water is left in the water storage cavity to exchange heat with the auxiliary heat exchanger to produce enough high-humidity hot air to achieve better humidification effect on the air in the indoor air duct.

[0012] The condensed water flowing into the water box can be treated in various ways. Preferably, a water pump is installed in the water box, and the controller can control the water pump to directly discharge or transport the condensed water in the water box to the condenser.

[0013] In order to improve the heat dissipation effect of the condensed water on the condenser, a liquid distributor is installed on the condenser, and the water pump can transport the condensed water to the liquid distributor and distribute the condensed water on the surface of the condenser through the liquid distributor.

[0014] In order to avoid excessive water in the water box, a second float switch is installed in the water box, and in the state that the second float switch is triggered, the condensed water in the water box is discharged through the water pump.

[0015] In order to realize both the internal circulation and the external circulation working modes, and the heat dissipation air duct also realizes both the exhaust modes, the air inlet of the indoor air duct is connected to the indoor kitchen or the outdoor, the air outlet of the indoor air duct is connected to the indoor kitchen, the air inlet of the heat dissipation air duct is connected to the indoor kitchen or the outdoor, and the air outlet of the heat dissipation air duct is connected to the public flue or the outdoor,

[0016] In order to enable the system to realize different working modes through switching of the return air inlets, an outdoor return air inlet is opened on the kitchen wall, an indoor return air inlet is opened on the kitchen ceiling, and a first air valve for switching between the internal circulation mode and the external circulation mode is installed at the outdoor return air inlet and the indoor return air inlet. In the external circulation mode, the outdoor return air inlet is in fluid communication with the air inlets of the indoor air duct and the heat dissipation air duct through the return air pipe, and in the internal circulation mode, the indoor return air inlet is in fluid communication with the air inlets of the indoor air duct and the heat dissipation air duct through the return air pipe.

[0017] The indoor return air inlet can be arranged at multiple different positions, and an indoor air outlet is arranged on the kitchen ceiling or the range hood, and the air outlet of the indoor air duct is in fluid communication with the indoor air outlet.

[0018] As a preferred solution, the range hood has an exhaust outlet and a heat dissipation outlet, the exhaust outlet is connected with the public flue through an exhaust pipe, and the heat dissipation outlet is connected with the outdoor through a heat dissipation pipe. In this way, the heat dissipation pipe and the exhaust pipe are independent of each other, and the exhaust gas flow of the range hood and the heat dissipation air flow of the heat dissipation air duct do not interfere with each other.

[0019] As another preferred solution, the range hood has an exhaust outlet, the exhaust outlet is connected with the public flue through an exhaust pipe, and a second air valve is installed at the outlet of the heat dissipation pipe to switch the connection or separation between the heat dissipation pipe and the exhaust pipe. In this way, when the air conditioner is turned on, the second air valve is opened, and the heat dissipation air flow in the heat dissipation air duct can be discharged into the public flue through the exhaust pipe. Only when the range hood is turned on, the second air valve is closed, and the exhaust gas flow can be prevented from entering the heat dissipation air duct.

[0020] As a preferred solution of any of the above solutions, the range hood includes a housing and a range hood fan installed inside the housing.

[0021] The technical solution adopted by the present application to solve the second technical problem is: a control method of a kitchen air conditioning system, characterized in that: the control method is applied to the kitchen air conditioning system, and the control method includes the following steps:

[0022] S1, determining whether the range hood is turned on;

[0023] If yes, go to step S5;

[0024] If no, go to step S2;

[0025] S2, determining whether the air conditioner is turned on;

[0026] If yes, switch the first air valve, open the indoor return air outlet and close the outdoor return air outlet, and then go to step S3;

[0027] If no, go to step S10;

[0028] S3, determining whether the indoor air humidity is greater than a first set value;

[0029] If yes, start the dehumidification mode, open the valve and the water pipe stop valve, and the condensed water in the water storage cavity flows into the water box, and then go to step S4;

[0030] If no, maintain the valve in a closed state, and then go to step S10;

[0031] S4, determining whether the outlet temperature of the indoor air duct is lower than a set temperature;

[0032] If yes, the heat dissipation fan reduces the rotating speed, and then goes to step S9;

[0033] If no, the cooling fan increases the rotating speed, and then goes to step S9;

[0034] S5, judging whether the air conditioner is on or not;

[0035] If yes, switching the first air valve, opening the outdoor air return port and closing the indoor air return port, and then goes to step S6;

[0036] If no, the range hood maintains the open state, and then goes to step S10;

[0037] S6, judging whether the indoor air humidity is lower than the second set value or not, the second set value is lower than the first set value;

[0038] If yes, goes to step S7;

[0039] If no, the valve maintains the closed state, the water pipe stop valve is opened, the condensed water in the water storage cavity flows into the water box, and then goes to step S9;

[0040] S7, starting the humidification mode, the valve is opened, the water pipe stop valve is closed, the auxiliary heat exchanger exchanges heat with the condensed water in the water storage cavity, and then goes to step S8;

[0041] S8, judging whether the first float switch is triggered or not;

[0042] If yes, the water pipe stop valve is opened, the condensed water in the water storage cavity flows into the water box, and then goes to step S9;

[0043] If no, returns to step S7;

[0044] S9, judging whether the air conditioner is closed or not;

[0045] If yes, goes to step S10;

[0046] If no, returns to step S4;

[0047] S10, shutting down.

[0048] Further preferably, in step S3, when the dehumidification mode is started, the condensed water in the water box is pumped to the liquid distributor by the water pump; in step S6, the condensed water in the water box is pumped to the liquid distributor by the water pump; in step S8, the condensed water in the water box is pumped out by the water pump.

[0049] Compared with the prior art, the kitchen air conditioning system has the advantages that the refrigeration system of the kitchen air conditioning system comprises the auxiliary heat exchanger connected in parallel with the condenser, in the dehumidification mode, the heat of the auxiliary heat exchanger enters the inside of the indoor air duct and is mixed with the air after dehumidification of the indoor module, the indoor air outlet temperature is improved, the user experience of dehumidification without temperature drop is realized, in the humidification mode, the condensed water accumulated on the surface of the evaporator is exchanged with the auxiliary heat exchanger, the hot air with humidity is generated and mixed with the air in the indoor air duct, the air outlet humidity is increased, and the user experience is greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0050] Figure 1 Fig. 1 is a structural schematic diagram of the kitchen air conditioning system in the indoor circulation mode according to the first embodiment of the present application;

[0051] Figure 2 Fig. 2 is a structural schematic diagram of the extractor hood according to the first embodiment of the present application (valve closed state);

[0052] Figure 3 Fig. 3 is a structural schematic diagram of the extractor hood according to the first embodiment of the present application (valve open state);

[0053] Figure 4 Fig. 4 is a structural schematic diagram of the kitchen air conditioning system in the outdoor circulation mode according to the first embodiment of the present application;

[0054] Figure 5 Fig. 5 is a structural schematic diagram of the kitchen air conditioning system in the indoor circulation mode according to the second embodiment of the present application;

[0055] Figure 6 Fig. 6 is a structural schematic diagram of the kitchen air conditioning system in the outdoor circulation mode according to the second embodiment of the present application;

[0056] Figure 7 Fig. 7 is a connection schematic diagram of the air conditioning assembly according to the first and second embodiments of the present application;

[0057] Figure 8 Fig. 8 is a control logic diagram of the kitchen air conditioning system according to the first and second embodiments of the present application. DETAILED DESCRIPTION

[0058] The present application will be further described in detail below with reference to the embodiments of the drawings.

[0059] Embodiment 1

[0060] As Figures 1 to 4As shown, the kitchen air conditioning system of the embodiment comprises a range hood 1, the range hood 1 comprises a casing 100 and a range hood fan 101 installed inside the casing 100. The compressor 2, the indoor unit module 3 and the heat dissipation module 4 are integrated on the range hood 1, the indoor unit module 3 has an indoor unit air duct 30, the indoor unit air duct 30 is provided with an evaporator 31 and an indoor unit fan 32, along the air flow direction, the indoor unit fan 32 is arranged downstream of the evaporator 31, the heat dissipation module 4 has a heat dissipation air duct 40, the heat dissipation air duct 40 is provided with a condenser 41 and a heat dissipation fan 42, along the air flow direction, the heat dissipation fan 42 is arranged upstream of the condenser 41. The compressor 2, the condenser 41 and the evaporator 31 are connected through a refrigerant pipeline 5, the compressor 2, the condenser 41 and the evaporator 31 constitute an air conditioning assembly, and the specific working principle is prior art, which will not be described here.

[0061] In the embodiment, the auxiliary heat exchanger 6 is connected in parallel with the condenser 41, that is, the auxiliary heat exchanger 6 is arranged between the compressor 2 and the evaporator 31. Figure 7 As shown, the auxiliary heat exchanger 6 is connected in parallel with the condenser 41, that is, the auxiliary heat exchanger 6 is arranged between the compressor 2 and the evaporator 31. The valve 7 is installed between the auxiliary heat exchanger 6 and the indoor unit air duct 30, the valve 7 of the embodiment adopts a rolling shutter valve, in the open state of the valve 7, the auxiliary heat exchanger 6 is arranged in the air duct between the indoor unit fan 32 and the evaporator 31, along the air flow direction, the indoor unit fan 32, the auxiliary heat exchanger 6 and the evaporator 31 are arranged in sequence.

[0062] The indoor unit module 3 has a water storage cavity 33, the auxiliary heat exchanger 6 is a heat exchange pipe arranged in the water storage cavity 33, the bottom of the water storage cavity 33 is provided with a water outlet, a water box 8 is installed inside the range hood 1, and the water outlet is connected with the water box 8 through a water outlet pipe 9. A first float switch 11 is installed in the water storage cavity 33, and a water pipe stop valve 10 is installed on the water outlet pipe 9. In the state that the first float switch 11 is triggered, the controller controls the water pipe stop valve 10 to open, and the condensed water in the water storage cavity 33 flows into the water box 8 through the water outlet pipe 9. A water pump 13 is installed in the water box 8, and the controller can control the water pump 13 to directly discharge or transport the condensed water in the water box 8 to the condenser 41.

[0063] In the embodiment, a liquid distributor 14 is installed on the condenser 41, the water pump 13 can transport the condensed water to the liquid distributor 14, and the condensed water is distributed on the surface of the condenser 41 through the liquid distributor 14. A second float switch 12 is installed in the water box 8, and in the state that the second float switch 12 is triggered, it indicates that the amount of condensed water in the water box 8 is too large, at this time, the water pump 13 needs to be discharged.

[0064] In the dehumidification mode, the valve 7 is opened, the heat of the auxiliary heat exchanger 6 enters the inside of the indoor unit air duct 30 and mixes with the air after dehumidification of the indoor unit module 3, at the same time, the water pipe stop valve 10 is opened, and the condensed water in the water storage cavity 33 flows into the water box 8 through the water outlet pipe 9.

[0065] In humidification mode, valve 7 opens, and the condensate on the surface of evaporator 31 accumulates and exchanges heat with auxiliary heat exchanger 6, generating humidified hot air that mixes with the air in the indoor unit's air duct 30. At the same time, water pipe shut-off valve 10 closes, and condensate accumulates in water storage chamber 33 and exchanges heat with auxiliary heat exchanger 6, ensuring that sufficient high-humidity hot air can be generated.

[0066] An outdoor return air vent 17 is provided on the kitchen wall 15, and an indoor return air vent 18 is provided on the kitchen ceiling 16. A first air valve 19 is installed at the outdoor return air vent 17 and the indoor return air vent 18 to switch between the internal circulation mode and the external circulation module. In this embodiment, the first air valve 19 is a rotary valve.

[0067] In internal circulation mode, the outdoor return air vent 17 is closed, and the indoor return air vent 18 is open. The air inlets of the indoor unit air duct 30 and the cooling air duct 40 are both connected to the kitchen interior through the return air duct 20. In external circulation mode, the outdoor return air vent 17 is open, and the indoor return air vent 18 is closed. The air inlets of the indoor unit air duct 30 and the cooling air duct 40 are both connected to the outside through the return air duct 20.

[0068] In this embodiment, an indoor air outlet 21 is provided on the kitchen ceiling 16, and the air outlet of the indoor unit duct 30 is in fluid communication with the indoor kitchen through the indoor air outlet 21. Alternatively, the indoor air outlet 14 can also be provided on the range hood.

[0069] The range hood 1 has a smoke exhaust port 22 and a heat dissipation outlet 23. The smoke exhaust port 22 is connected to a common flue through a smoke exhaust pipe 24. The heat dissipation outlet 23 is the outlet of the heat dissipation duct 40, and a heat dissipation pipe 25 is installed on the heat dissipation outlet 23. In this embodiment, a second air valve 26 is installed at the outlet of the heat dissipation pipe 25. In this embodiment, the second air valve 26 is a rotary valve. When the second air valve 26 is open, the heat dissipation pipe 25 can be connected to the smoke exhaust pipe 24, that is, the heat dissipation outlet 23 is connected to the common flue. When the second air valve 26 is closed, the heat dissipation pipe 25 is isolated from the smoke exhaust pipe 24.

[0070] like Figure 8 As shown, the kitchen air conditioning system of this embodiment includes the following control method:

[0071] S1. Determine whether the range hood is turned on;

[0072] If so, proceed to step S5;

[0073] If not, proceed to step S2;

[0074] S2. Determine whether the air conditioner is turned on;

[0075] If yes, switch the first air valve 19, open the indoor return air outlet 18 and close the outdoor return air outlet 17, then go to step S3;

[0076] If no, go to step S10;

[0077] S3, judge whether the indoor air humidity is greater than a first set value;

[0078] If yes, start the dehumidification mode, the valve 7 is opened, the water pipe stop valve 10 is opened, the condensed water in the water storage cavity 33 flows into the water box 8, then go to step S4;

[0079] If no, the valve 7 is maintained in a closed state, then go to step S10;

[0080] S4, judge whether the outlet air temperature of the indoor unit air duct 30 is lower than a set temperature;

[0081] If yes, the heat dissipation fan 42 reduces the rotating speed, then go to step S9;

[0082] If no, the heat dissipation fan 42 increases the rotating speed, then go to step S9;

[0083] S5, judge whether the air conditioner is turned on;

[0084] If yes, switch the first air valve 19, open the outdoor return air outlet 17 and close the indoor return air outlet 18, then go to step S6;

[0085] If no, the range hood 1 is maintained in an open state, then go to step S10;

[0086] S6, judge whether the indoor air humidity is lower than a second set value, the second set value is lower than the first set value;

[0087] If yes, go to step S7;

[0088] If no, the valve 7 is maintained in a closed state, the water pipe stop valve 10 is opened, the condensed water in the water storage cavity 33 flows into the water box 8, then go to step S9;

[0089] S7, start the humidification mode, the valve 7 is opened, the water pipe stop valve 10 is closed, the auxiliary heat exchanger 6 exchanges heat with the condensed water in the water storage cavity 33, then go to step S8;

[0090] S8, judge whether the first float switch 11 is triggered;

[0091] If yes, the water pipe stop valve 10 is opened, the condensed water in the water storage cavity 33 flows into the water box 8, then go to step S9;

[0092] If no, return to step S7;

[0093] S9, determining whether to close the air conditioner;

[0094] If yes, go to step S10;

[0095] If no, return to step S4;

[0096] S10, turn off.

[0097] In step S3, when the dehumidification mode is started, the condensed water in the water box 8 is transported to the liquid distributor 14 by the water pump 13; in step S6, the condensed water in the water box 8 is transported to the liquid distributor 14 by the water pump 13; in step S8, the condensed water in the water box 8 is transported to the liquid distributor 14 by the water pump 13. In step S3, the first set value of air humidity can be 70%, and the second set value in step S6 can be 50%. Of course, the set value can not be limited to the above specific values, but the second set value needs to be lower than the first set value.

[0098] As shown in Figure 1 , the outdoor air return port 17 is closed, and the indoor air return port 18 is opened, which is the internal circulation mode; when it is a plum rain weather, the dehumidification mode needs to be started, at this time, the internal circulation dehumidification mode is started, the valve 7 is opened, the heat of the auxiliary heat exchanger 6 is mixed with the air after dehumidification of the indoor unit module 3, the temperature of the indoor unit outlet air is improved, and the user experiences the feeling of dehumidification without temperature drop. At this time, the water pipe stop valve 10 is always open, the condensed water is transported to the liquid distributor 14 by the water pump 13, and the heat exchange effect of the condenser 41 is improved. At the same time, in the stage of preparing dishes, it is also recommended to use the internal circulation mode, at this time, there is no oil smoke, which will not pollute the indoor unit system.

[0099] As shown in Figure 4 , when the cooking mode is started, the outdoor air return port 17 is opened, and the indoor air return port 18 is closed, which is the external circulation mode. Because there is oil smoke in the kitchen at this time, in order to ensure the cleanliness of the indoor unit module 3, the outdoor air return is adopted. In the external circulation refrigeration mode, the valve 7 is opened, the water pipe stop valve 10 is always closed, the condensed water is accumulated in the water storage cavity 13, the auxiliary heat exchanger 6 exchanges heat with the condensed water, the heat exchange is increased, and the high humidity hot air is mixed into the indoor unit air duct 30, and the humidity of the indoor unit outlet air is increased. When the first float switch 11 is started, it means that the amount of condensed water in the water storage cavity 13 is too large, at this time, the water pipe stop valve 10 needs to be opened, the condensed water flows into the water box 8, and the condensed water is discharged by the water pump 13.

[0100] Example two:

[0101] As shown in Figure 5 and Figure 6 , the range hood 1 has a smoke exhaust port 22 and a heat dissipation air outlet 23, the smoke exhaust port 22 is connected with the public flue through a smoke exhaust pipe 24, and the heat dissipation air outlet 23 is connected with the outdoor through a heat dissipation pipe 25, Figure 5 is the internal circulation mode,Figure 6 For the outer circulation mode, the heat dissipation pipe 25 and the exhaust pipe 24 are always independent of each other in the inner circulation mode and the outer circulation mode, so that the oil fume flow discharged from the range hood 1 and the heat dissipation flow of the heat dissipation air duct 40 do not interfere with each other.

[0102] The kitchen air conditioning system can be controlled by a voice module, which is provided with a control module, a voice receiving module and a voice analysis module.

[0103] In the specification and claims of the present application, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present application, but these terms are used herein only for the purpose of convenience of description and are determined based on the example orientation shown in the drawings. Since the disclosed embodiments of the present application can be arranged in different directions, these terms indicating directions are only for illustration and should not be considered as limiting, for example, "upper" and "lower" are not necessarily limited to the direction opposite or consistent with the direction of gravity.

[0104] The "fluid communication" referred to in the present application refers to the spatial positional relationship between two components or parts, which are collectively referred to as a first part and a second part, respectively, i.e. fluid, gas, liquid or a mixture of the two can flow or / and be transported from the first part to the second part along the flow path. It can be directly connected between the first part and the second part, or indirectly connected between the first part and the second part through at least one third party, which can be a fluid passage such as a pipe, channel, conduit, flow guide, hole, groove, etc. or a chamber allowing fluid flow or a combination thereof.

Claims

1. A kitchen air conditioning system, comprising a range hood (1), wherein the range hood (1) integrates a compressor (2), an indoor unit module (3), and a heat dissipation module (4), the indoor unit module (3) having an indoor unit air duct (30), an evaporator (31) and an indoor unit fan (32) disposed within the indoor unit air duct (30), the heat dissipation module (4) having a heat dissipation air duct (40), a condenser (41) and a heat dissipation fan (42) disposed within the heat dissipation air duct (40), the compressor (2), the condenser (41) and the evaporator (31) being connected via a refrigerant pipeline (5), characterized in that: It also includes an auxiliary heat exchanger (6) connected in parallel with the condenser (41). A valve (7) is installed between the auxiliary heat exchanger (6) and the indoor unit air duct (30). In dehumidification mode, the valve (7) is opened, and the heat from the auxiliary heat exchanger (6) enters the indoor unit air duct (30) and mixes with the dehumidified air from the indoor unit module (3). In humidification mode, the valve (7) is opened, and the condensate water condensed on the surface of the evaporator (31) accumulates and exchanges heat with the auxiliary heat exchanger (6), generating humid hot air that mixes with the air in the indoor unit air duct (30).

2. The kitchen air conditioning system according to claim 1, characterized in that: With the valve (7) open, the auxiliary heat exchanger (6) is located in the duct between the indoor unit fan (32) and the evaporator (31). Along the airflow direction, the indoor unit fan (32), the auxiliary heat exchanger (6) and the evaporator (31) are arranged in sequence.

3. The kitchen air conditioning system according to claim 1, characterized in that: The indoor unit module (3) has a water storage cavity (33), the auxiliary heat exchanger (6) is a heat exchange tube located in the water storage cavity (33), the bottom of the water storage cavity (33) has a water outlet, the range hood (1) has a water box (8) installed inside, and the water outlet is connected to the water box (8) through a water outlet pipe (9).

4. The kitchen air conditioning system according to claim 3, characterized in that: The water storage chamber (33) is equipped with a first float switch (11), and the water outlet pipe (9) is equipped with a water pipe shut-off valve (10). It also includes a controller. When the first float switch (11) is triggered, the controller controls the water pipe shut-off valve (10) to open, and the condensate in the water storage chamber (33) flows into the water box (8) through the water outlet pipe (9).

5. The kitchen air conditioning system according to claim 4, characterized in that: In dehumidification mode, the water pipe shut-off valve (10) is opened, and the condensate in the water storage chamber (33) flows into the water box (8) through the water outlet pipe (9). In humidification mode, the water pipe shut-off valve (10) is closed, and the condensate accumulates in the water storage chamber (33) and exchanges heat with the auxiliary heat exchanger (6).

6. The kitchen air conditioning system according to claim 4, characterized in that: A water pump (13) is installed inside the water box (8). The controller can control the water pump (13) to discharge the condensate in the water box (8) directly or to the condenser (41).

7. The kitchen air conditioning system according to claim 6, characterized in that: A distributor (14) is installed on the condenser (41), and the water pump (13) can deliver condensate to the distributor (14) and distribute the condensate on the surface of the condenser (41) through the distributor (14).

8. The kitchen air conditioning system according to claim 6, characterized in that: A second float switch (12) is installed inside the water box (8). When the second float switch is triggered, the condensate in the water box (8) is discharged through the water pump (13).

9. The kitchen air conditioning system according to any one of claims 4 to 8, characterized in that: The air inlet of the indoor unit air duct (30) is connected to the kitchen interior or to the outside, the air outlet of the indoor unit air duct (30) is connected to the kitchen interior, the air inlet of the heat dissipation air duct (40) is connected to the kitchen interior or to the outside, and the air outlet of the heat dissipation air duct (40) is connected to the public flue or to the outside.

10. The kitchen air conditioning system according to claim 9, characterized in that: An outdoor return air vent (17) is provided on the kitchen wall (15), and an indoor return air vent (18) is provided on the kitchen ceiling (16). A first air valve (19) for switching between internal circulation mode and external circulation mode is installed at the outdoor return air vent (17) and the indoor return air vent (18). In external circulation mode, the outdoor return air vent (17) is fluidly connected to the air inlet of the indoor unit air duct (30) and the air inlet of the heat dissipation air duct (40) through the return air pipe (20). In internal circulation mode, the indoor return air vent (18) is fluidly connected to the air inlet of the indoor unit air duct (30) and the air inlet of the heat dissipation air duct (40) through the return air pipe (20).

11. The kitchen air conditioning system according to claim 9, characterized in that: An indoor air outlet (21) is provided on the kitchen ceiling (16) or on the range hood (1), and the air outlet of the indoor unit air duct (30) is in fluid communication with the indoor air outlet (21).

12. The kitchen air conditioning system according to claim 9, characterized in that: The range hood (1) has a smoke exhaust port (22) and a heat dissipation outlet (23). The smoke exhaust port (22) is connected to a common flue through a smoke exhaust pipe (24), and the heat dissipation outlet (23) is connected to the outside through a heat dissipation pipe (25).

13. The kitchen air conditioning system according to claim 9, characterized in that: The range hood (1) has a smoke exhaust port (22), which is connected to a common flue through a smoke exhaust pipe (24). A second air valve (26) is installed at the outlet of the heat dissipation pipe (25) to switch the heat dissipation pipe (25) from being connected to or separated from the smoke exhaust pipe (24).

14. The kitchen air conditioning system according to claim 1, characterized in that: The range hood (1) includes a housing (100) and a range hood fan (101) installed inside the housing (100).

15. A control method for a kitchen air conditioning system, characterized in that: The control method is applied to the kitchen air conditioning system of claim 10, and the control method includes the following steps: S1. Determine whether the range hood is turned on (1); If so, proceed to step S5; If not, proceed to step S2; S2. Determine whether the air conditioner is turned on; If so, switch the first air valve (19), open the indoor return air vent (18) and close the outdoor return air vent (17), and then proceed to step S3; If not, proceed to step S10; S3. Determine if the indoor air humidity is greater than the first set value; If so, the dehumidification mode is activated, valve (7) is opened, water pipe shut-off valve (10) is opened, and condensate in water storage chamber (33) flows into water box (8), and then proceeds to step S4; If not, valve (7) remains closed, and then proceed to step S10; S4. Determine whether the air outlet temperature of the indoor unit air duct (30) is lower than the set temperature; If so, the cooling fan (42) reduces its speed and then proceeds to step S9; If not, the cooling fan (42) increases its speed and then proceeds to step S9; S5. Determine whether the air conditioner is turned on; If so, switch the first air valve (19), open the outdoor return air vent (17) and close the indoor return air vent (18), and then proceed to step S6; If not, the range hood (1) remains on and then proceeds to step S10; S6. Determine whether the indoor air humidity is lower than the second set value, and the second set value is lower than the first set value; If so, proceed to step S7; If not, the valve (7) remains closed, the water pipe shut-off valve (10) opens, the condensate in the water storage chamber (33) flows into the water box (8), and then proceeds to step S9; S7. Start the humidification mode, open the valve (7), close the water pipe shut-off valve (10), and exchange heat between the auxiliary heat exchanger (6) and the condensate in the water storage chamber (33). Then proceed to step S8. S8. Determine whether the first float switch (11) has been triggered; If so, the water pipe shut-off valve (10) is opened, and the condensate in the water storage chamber (33) flows into the water box (8), and then proceeds to step S9; If not, return to step S7; S9. Determine whether to turn off the air conditioner; If so, proceed to step S10; If not, return to step S4; S10, Power off.

16. The control method for the kitchen air conditioning system according to claim 15, characterized in that: In step S3, when the dehumidification mode is activated, the condensate in the water box (8) is pumped to the distributor (14) by the water pump (13); in step S6, the condensate in the water box (8) is pumped to the distributor (14) by the water pump (13); in step S8, the condensate in the water box (8) is discharged by the water pump (13).

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