A kitchen air conditioning system

Abstract

A kitchen air conditioning system integrates a compressor, an indoor unit module, and a heat dissipation module into its range hood. The indoor unit module has an indoor air duct containing an evaporator and an indoor fan. The heat dissipation module has a heat dissipation air duct containing a condenser and a heat dissipation fan. An auxiliary heat exchanger is connected in parallel with the condenser. A valve is installed between the auxiliary heat exchanger and the indoor air duct. In dehumidification mode, the valve opens, allowing heat from the auxiliary heat exchanger to enter the indoor air duct and mix with the dehumidified air from the indoor unit module. In humidification mode, the valve opens, allowing condensate on the evaporator surface to accumulate and exchange heat with the auxiliary heat exchanger, generating humidified hot air that mixes with the air in the indoor air duct. This kitchen air conditioning system can increase the indoor unit's outlet air temperature in dehumidification mode, providing users with a feeling of dehumidification without cooling. In humidification mode, it can increase the outlet air humidity, improving the user experience.

Description

Technical Field

[0001] This utility model relates to a kitchen air conditioning system. Background Technology

[0002] In daily life and industrial production scenarios, air conditioners are core devices for regulating indoor temperature and humidity. Dehumidification is a crucial function of air conditioners, primarily used to address problems caused by high humidity, such as clothes not drying properly, furniture mold, and general discomfort. This is especially true during the rainy season, in humid southern regions, or in high-humidity industrial environments, where users rely heavily on dehumidification. However, a key technical pain point exists in the dehumidification modes of mainstream air conditioners currently on the market: while achieving dehumidification, it often results in a significant drop in indoor temperature. This problem stems from the traditional dehumidification principle of air conditioners. During dehumidification, indoor air flows through a cool evaporator, where water vapor condenses and is expelled outdoors to reduce humidity. However, in this process, the evaporator simultaneously absorbs heat from the air, causing the indoor temperature to drop. This phenomenon of dehumidification inevitably leading to a drop in temperature is seriously contrary to the core needs of users: the core demand of users when turning on dehumidification mode is to reduce indoor humidity, not to change indoor temperature. Especially in scenarios such as spring and autumn when the initial indoor temperature is already in a comfortable range, the additional drop in temperature during dehumidification will cause the indoor environment to become colder, which not only affects the user's physical comfort, but may also force the user to turn on the heating function to compensate for the temperature loss, increasing energy consumption and operating costs.

[0003] To address the aforementioned issue of simultaneous cooling during dehumidification, some manufacturers have proposed improved solutions. For example, some have added a row of condensers after the evaporator. This solution uses the heat released by the condensers to reheat the air cooled by the evaporator, thus offsetting the temperature loss during dehumidification and theoretically achieving a constant indoor temperature during dehumidification. However, this solution has significant limitations: the additional heat exchanger directly increases the manufacturing cost of the air conditioner, including the material cost of the heat exchanger itself, the process cost of equipment assembly, and the increased transportation and installation costs due to the larger overall size of the air conditioner. This makes it difficult for this technology to be widely adopted in low- to mid-range air conditioning products, limiting its market application.

[0004] At the same time, existing air conditioning technology faces another unresolved problem: in normal cooling or heating mode, air conditioners often only focus on temperature regulation accuracy while neglecting the control of indoor humidity, which can easily lead to excessively low indoor humidity. Most current air conditioners lack dynamic monitoring and intelligent adjustment mechanisms for indoor humidity, making it impossible to maintain indoor humidity within the comfortable range of 40%-60% for humans while ensuring the temperature meets the set requirements. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a kitchen air conditioning system that can dehumidify without cooling and increase the humidity of the air outlet when using air conditioning, in light of the above-mentioned existing technology.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a kitchen air conditioning system, including a range hood, wherein the range hood integrates a compressor, an indoor unit module and a heat dissipation module, the indoor unit module has an indoor unit air duct, an evaporator and an indoor unit fan are provided in the indoor unit air duct, the heat dissipation module has a heat dissipation air duct, a condenser and a heat dissipation fan are provided in the heat dissipation air duct, the compressor, condenser and evaporator are connected through a refrigerant pipeline, characterized in that: it also includes an auxiliary heat exchanger connected in parallel with the condenser, a valve is installed between the auxiliary heat exchanger and the indoor unit air duct, in 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 dehumidified by the indoor unit module, in humidification mode, the valve is opened, the condensate water condensed on the surface of the evaporator accumulates and exchanges heat with the auxiliary heat exchanger, generating humid hot air and mixing with the air in the indoor unit air duct.

[0007] In order to enable the auxiliary heat exchanger to provide better heating and humidification effects to the air in the indoor unit duct, the auxiliary heat exchanger is located in the duct between the indoor unit fan and the evaporator when the valve is open. The indoor unit fan, auxiliary heat exchanger and evaporator are arranged in sequence along the airflow direction.

[0008] In order to enable the water storage cavity to be connected to the water box and to enable the auxiliary heat exchanger to achieve a better heat exchange effect with the condensate in the water storage cavity, the indoor unit module has a water storage cavity, the auxiliary heat exchanger is a heat exchange tube located in the water storage cavity, the bottom of the water storage cavity has a water outlet, the range hood is equipped with a water box, and the water outlet is connected to the water box through a water outlet pipe.

[0009] Further preferably, a first float switch is installed inside the water storage chamber, a water pipe shut-off valve is installed on the water outlet pipe, and a controller is also included. When the first float switch is triggered, the controller controls the water pipe shut-off valve to open, allowing the condensate in the water storage chamber to flow into the water box through the water outlet pipe. This configuration allows for intelligent control of the water volume in the water storage chamber under different operating conditions.

[0010] Further optimized, in dehumidification mode, the water pipe shut-off valve is open, and the condensate in the water storage chamber flows into the water box through the outlet pipe. In humidification mode, the water pipe shut-off valve is closed, and the condensate accumulates in the water storage chamber and exchanges heat with the auxiliary heat exchanger. This configuration ensures that in dehumidification mode, the condensate in the water storage chamber is discharged, preventing heat exchange between the condensate and the auxiliary heat exchanger, thereby improving the heating effect of the auxiliary heat exchanger on the indoor unit's air duct. In humidification mode, it ensures that sufficient condensate remains in the water storage chamber to exchange heat with the auxiliary heat exchanger, generating sufficient high-humidity hot air for better humidification of the air in the indoor unit's air duct.

[0011] The condensate 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 discharge the condensate in the water box directly or transport it to the condenser.

[0012] To improve the heat dissipation effect of condensate on the condenser, a distributor is installed on the condenser. The water pump can deliver condensate to the distributor and distribute the condensate on the surface of the condenser through the distributor.

[0013] To prevent excessive water volume in the water tank, a second float switch is installed inside the water tank. When the second float switch is triggered, the condensate in the water tank is discharged through a water pump.

[0014] To enable both internal and external air circulation modes, and to accommodate both exhaust methods in the cooling duct, the air inlet of the indoor unit's air duct is connected to either the kitchen interior or the outside, the air outlet of the indoor unit's air duct is connected to either the kitchen interior or the outside, and the air outlet of the cooling duct is connected to either the common flue or the outside.

[0015] To enable the system to switch between different operating modes via the return air vent, an outdoor return air vent is installed on the kitchen wall, and an indoor return air vent is installed on the kitchen ceiling. A first air valve is installed at both the outdoor and indoor return air vents to switch between internal and external circulation modes. In external circulation mode, the outdoor return air vent is fluidly connected to the air inlet of the indoor unit's air duct and the air inlet of the heat dissipation air duct through a return air duct. In internal circulation mode, the indoor return air vent is fluidly connected to the air inlet of the indoor unit's air duct and the air inlet of the heat dissipation air duct through a return air duct.

[0016] The indoor return air vent can be set in multiple different locations. The indoor air outlet is set on the kitchen ceiling or on the range hood. The air outlet of the indoor unit duct is fluidly connected to the indoor air outlet.

[0017] As a preferred embodiment, the range hood has a smoke exhaust port and a heat dissipation outlet. The smoke exhaust port is connected to a common flue via a smoke exhaust pipe, and the heat dissipation outlet is connected to the outside via a heat dissipation pipe. With this configuration, the heat dissipation pipe and the smoke exhaust pipe are independent of each other, and the exhaust airflow from the range hood does not interfere with the heat dissipation airflow from the heat dissipation duct.

[0018] As another preferred embodiment, the range hood has a smoke exhaust port, which is connected to a common flue via a smoke exhaust pipe. A second air valve is installed at the outlet of the heat dissipation pipe to switch between connecting and disconnecting the heat dissipation pipe from the smoke exhaust pipe. With this configuration, when the air conditioner is turned on, the second air valve opens, allowing the cooling airflow in the heat dissipation duct to be exhausted into the common flue through the smoke exhaust pipe. When the range hood is only turned on, the second air valve closes, preventing cooking fumes from entering the heat dissipation duct.

[0019] As a preferred embodiment of any of the above solutions, the range hood includes a housing and a range hood fan installed inside the housing.

[0020] Compared with the prior art, the advantages of this utility model are as follows: The refrigeration system of the kitchen air conditioning system includes an auxiliary heat exchanger connected in parallel with the condenser. In dehumidification mode, the heat from the auxiliary heat exchanger enters the indoor unit's air duct and mixes with the dehumidified air from the indoor unit module, increasing the outlet air temperature and allowing users to experience dehumidification without cooling. In humidification mode, the condensate water condensed on the evaporator surface accumulates and exchanges heat with the auxiliary heat exchanger, generating humid hot air that mixes with the air in the indoor unit's air duct, increasing the outlet air humidity and greatly improving the user experience. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the kitchen air conditioning system in internal circulation mode according to Embodiment 1 of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the range hood according to Embodiment 1 of this utility model (valve closed);

[0023] Figure 3 This is a schematic diagram of the structure of the range hood according to Embodiment 1 of this utility model (valve open state);

[0024] Figure 4 This is a schematic diagram of the kitchen air conditioning system in external circulation mode according to Embodiment 1 of this utility model;

[0025] Figure 5 This is a schematic diagram of the kitchen air conditioning system in internal circulation mode according to Embodiment 2 of this utility model;

[0026] Figure 6 This is a schematic diagram of the kitchen air conditioning system in external circulation mode according to Embodiment 2 of this utility model;

[0027] Figure 7 This is a schematic diagram showing the connection of the air conditioning components in Embodiment 1 and Embodiment 2 of this utility model;

[0028] Figure 8This is a control logic diagram of the kitchen air conditioning system according to Embodiment 1 and Embodiment 2 of this utility model. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0030] Example 1:

[0031] like Figures 1 to 4 As shown, the kitchen air conditioning system of this embodiment includes a range hood 1, which includes a housing 100 and a range hood fan 101 installed inside the housing 100. The range hood 1 integrates a compressor 2, an indoor unit module 3, and a heat dissipation module 4. The indoor unit module 3 has an indoor unit air duct 30, within which an evaporator 31 and an indoor unit fan 32 are located. Along the airflow direction, the indoor unit fan 32 is located downstream of the evaporator 31. The heat dissipation module 4 has a heat dissipation air duct 40, within which a condenser 41 and a heat dissipation fan 42 are located. Along the airflow direction, the heat dissipation fan 42 is located upstream of the condenser 41. The compressor 2, condenser 41, and evaporator 31 are connected via a refrigerant pipe 5. The compressor 2, condenser 41, and evaporator 31 constitute an air conditioning assembly, the specific working principle of which is prior art and will not be described further here.

[0032] In this embodiment, combined with 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 located between the compressor 2 and the evaporator 31. A valve 7 is installed between the auxiliary heat exchanger 6 and the indoor unit air duct 30. In this embodiment, the valve 7 is a roller shutter valve. When the valve 7 is open, the auxiliary heat exchanger 6 is located in the air 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.

[0033] The indoor unit module 3 has a water storage chamber 33, and the auxiliary heat exchanger 6 is a heat exchange tube located inside the water storage chamber 33. A water outlet is located at the bottom of the water storage chamber 33. A water box 8 is installed inside the range hood 1, and the water outlet is connected to the water box 8 via a water outlet pipe 9. A first float switch 11 is installed inside the water storage chamber 33, and a water pipe shut-off valve 10 is installed on the water outlet pipe 9. When the first float switch 11 is triggered, the controller controls the water pipe shut-off valve 10 to open, allowing the condensate in the water storage chamber 33 to flow into the water box 8 through the water outlet pipe 9. A water pump 13 is installed inside the water box 8, and the controller can control the water pump 13 to either directly discharge the condensate in the water box 8 or transport it to the condenser 41.

[0034] In this embodiment, a distributor 14 is installed on the condenser 41. 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. A second float switch 12 is installed in the water box 8. When the second float switch 12 is triggered, it indicates that the amount of condensate in the water box 8 is too large. At this time, it needs to be drained by the water pump 13.

[0035] In dehumidification mode, valve 7 opens, and the heat from auxiliary heat exchanger 6 enters the indoor unit air duct 30 and mixes with the dehumidified air from indoor unit module 3. At the same time, water pipe shut-off valve 10 opens, and the condensate in water storage chamber 33 flows into water box 8 through water outlet pipe 9.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] like Figure 8 As shown, the kitchen air conditioning system of this embodiment includes the following control method:

[0042] S1. Determine whether the range hood is turned on;

[0043] If so, proceed to step S5;

[0044] If not, proceed to step S2;

[0045] S2. Determine whether the air conditioner is turned on;

[0046] 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;

[0047] If not, proceed to step S10;

[0048] S3. Determine if the indoor air humidity is greater than the first set value;

[0049] If so, the dehumidification mode is activated, valve 7 is opened, 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 S4.

[0050] If not, valve 7 remains closed, and then proceed to step S10;

[0051] S4. Determine whether the outlet air temperature of the indoor unit's air duct 30 is lower than the set temperature;

[0052] If so, the cooling fan 42 reduces its speed and then proceeds to step S9;

[0053] If not, the cooling fan 42 increases its speed and then proceeds to step S9;

[0054] S5. Determine whether the air conditioner is turned on;

[0055] 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.

[0056] If not, the range hood 1 remains on and then proceeds to step S10;

[0057] S6. Determine whether the indoor air humidity is lower than the second set value. If the second set value is lower than the first set value;

[0058] If so, proceed to step S7;

[0059] If not, valve 7 remains closed, water pipe shut-off valve 10 opens, and condensate in water storage chamber 33 flows into water box 8, then proceeds to step S9;

[0060] S7. Start the humidification mode, open valve 7, close water pipe shut-off valve 10, and exchange heat between auxiliary heat exchanger 6 and condensate in water storage chamber 33. Then proceed to step S8.

[0061] S8. Determine whether the first float switch 11 has been triggered;

[0062] 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;

[0063] If not, return to step S7;

[0064] S9. Determine whether to turn off the air conditioner;

[0065] If so, proceed to step S10;

[0066] If not, return to step S4;

[0067] S10, Power off.

[0068] In step S3, when the dehumidification mode is activated, the condensate in the water tank 8 is pumped to the distributor 14 by the water pump 13; in step S6, the condensate in the water tank 8 is pumped to the distributor 14 by the water pump 13; in step S8, the condensate in the water tank 8 is discharged by the water pump 13. In step S3, the first set value for air humidity can be 70%, and in step S6, the second set value can be 50%. Of course, the set values ​​are not limited to the specific values ​​mentioned above, but the second set value must be lower than the first set value.

[0069] like Figure 1 As shown, the outdoor return air vent 17 is closed, and the indoor return air vent 18 is open, indicating an internal circulation mode. During the rainy season, dehumidification mode needs to be activated. In this mode, the internal circulation dehumidification mode is activated, valve 7 is open, and the heat from the auxiliary heat exchanger 6 mixes with the dehumidified air from the indoor unit module 3, increasing the indoor unit's outlet air temperature and providing users with the feeling of dehumidification without cooling. At this time, the water pipe shut-off valve 10 is normally open, and condensate is pumped to the distributor 14 via the water pump 13, improving the heat exchange effect of the condenser 41. Internal circulation mode is also recommended during food preparation, as there is no oil fume and it will not pollute the indoor unit system.

[0070] like Figure 4As shown, in cooking mode, the outdoor return air vent 17 is open and the indoor return air vent 18 is closed, which is the external circulation mode. Because there is oil smoke in the kitchen at this time, outdoor return air is used to ensure the cleanliness of the indoor unit module 3. In external circulation cooling mode, valve 7 is open and water pipe shut-off valve 10 is normally closed. Condensate accumulates in the water storage chamber 13. The auxiliary heat exchanger 6 exchanges heat with the condensate, increasing heat exchange and generating high-humidity hot air, which mixes into the indoor unit air duct 30, increasing the humidity of the indoor unit's exhaust air. When the first float switch 11 is activated, it indicates that the amount of condensate in the water storage chamber 13 is too large. At this time, the water pipe shut-off valve 10 needs to be opened, and the condensate flows into the water box 8 and is discharged by the water pump 13.

[0071] Example 2:

[0072] like Figure 5 and Figure 6 As shown, the range hood 1 has a smoke exhaust port 22 and a heat dissipation outlet 23. The smoke exhaust port 22 is connected to the 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. Figure 5 It is an inner loop mode. Figure 6 In the external circulation mode, the heat dissipation pipe 25 and the exhaust pipe 24 remain independent of each other in both the internal and external circulation modes. This ensures that the exhaust airflow from the range hood 1 does not interfere with the heat dissipation airflow from the heat dissipation duct 40. Other structural features of this embodiment are the same as in Embodiment 1 and will not be described further here.

[0073] This kitchen air conditioning system can be controlled by a voice module, which is equipped with a control module, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the kitchen air conditioning system to perform corresponding operations, thereby realizing intelligent control of the kitchen air conditioning system and improving the user experience.

[0074] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0075] The term "fluid connectivity" as used in this utility model refers to the spatial relationship between two components or parts, collectively referred to as the first part and the second part, meaning that a fluid, gas, liquid, or a mixture of both can flow from the first part along a flow path and / or be transported to the second part. This can be a direct connection between the first part and the second part, or an indirect connection between the first part and the second part through at least one third party. This third party can be a fluid channel such as a pipe, channel, conduit, guide, hole, or groove, or a chamber or combination thereof that allows fluid to flow through.

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).

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