Kitchen air conditioning system

Abstract

A kitchen air conditioning system, wherein an air conditioning component compressor, a first heat exchanger and a second heat exchanger are connected through a refrigerant pipeline, the oil fume suction component has a housing, a first smoke exhaust channel and a second smoke exhaust channel are arranged in the housing, the first heat exchanger is installed in one of the smoke exhaust channels, the inlet of the first smoke exhaust channel and the outlet of the second smoke exhaust channel are always open, a first valve plate is installed at the inlet of the second smoke exhaust channel, a second valve plate is installed at the outlet of the first smoke exhaust channel, and a driving mechanism for driving the first valve plate and the second valve plate to be linked is also installed in the smoke exhaust channel, so that one of the valve plates is in an open state and the other valve plate is in a closed state. When the kitchen air conditioning system is working, by switching between the two smoke exhaust channels, in the oil fume suction mode, the oil fume at the flue outlet can be prevented from flowing back into the flue where the first heat exchanger is located, and in the oil fume suction + air conditioning mode, the oil fume can take away the heat or cold of the first heat exchanger to improve the heat exchange effect.

Description

Technical Field

[0001] The invention relates to a kitchen air conditioning system. Background Art

[0002] The kitchen is the main place for people to cook, and the quality of the kitchen air environment directly affects the cooking experience. The kitchen is hot in summer and cold in winter, and there is a need for cooling and heating. For this reason, people have invented various kitchen air conditioners to cool the kitchen air in summer and provide warm air to the kitchen in winter to improve cooking comfort.

[0003] The basic form of the existing kitchen air conditioner is not much different from that of ordinary air conditioners. Generally, there are two forms. One is the split type of internal and external units, that is, the external unit is located outdoors and the internal unit is located indoors. The internal and external units each have a motor fan. The connection method of the kitchen air conditioner with split internal and external units needs to be connected through pipes, and a hole needs to be opened on the wall, which destroys the decoration. An external unit needs to be hung outdoors, which is difficult to install and the structure is not compact enough. The other is an integrated structure of the internal and external units. Although it can install the evaporator and condenser of the air conditioner indoors, it is necessary to destroy a larger area of ​​the wall to install the heat exhaust pipe of the condenser, which not only increases the difficulty of installation, but also affects the beauty of the room. The integrated internal and external units usually include mobile air conditioners and window units. When the mobile air conditioner is used, it is necessary to manually connect the heat dissipation hose and put the hose outside the window, which is inconvenient to use; the window unit needs to open a square hole with a large area on the wall to put the machine in, and can be moved out when not in use, leaving a square hole on the wall. Although it can be blocked with other things, it is troublesome and destroys the decoration.

[0004] In addition, due to the limited space in the kitchen, the size of the kitchen air conditioner cannot be too large. Therefore, there is a big problem in the heat dissipation of the kitchen air conditioner. If the heat cannot be dissipated in time during the use of the kitchen air conditioner, the energy efficiency of the air conditioner will be greatly reduced. However, the existing kitchen air conditioner and the range hood work independently of each other and the two cannot be linked. The heat generated by the kitchen air conditioner cannot be discharged to the outside through the fan of the range hood. Therefore, how to discharge the heat generated by the kitchen air conditioner through the range hood has become a problem that people need to solve urgently.

[0005] Although, there are also products such as air-conditioning hoods, which add air-conditioning components on the basis of the range hood platform, which can realize all the functions of the range hood and the functions of the air conditioner at the same time. However, these air-conditioning hoods often simply merge the functions of the indoor unit of the traditional air conditioner with the traditional range hood, and the outdoor unit of the air conditioner still needs to be installed separately outdoors. The integration of this type of air-conditioning range hood is not enough, and the installation is relatively cumbersome. Moreover, the pipe and line connection between the indoor and outdoor units of the air conditioner will also damage the wall. Moreover, the air conditioning component and the range hood component of the existing air-conditioning hood are not organically combined. For example, its exhaust channel is not much different from the exhaust channel of the existing range hood, and the exhaust channel has not been improved due to the combination of the range hood component and the air conditioning component. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a kitchen air conditioning system which can switch between different smoke exhaust channels according to different working modes and has good energy-saving effect in view of the above-mentioned existing technical status.

[0007] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: the kitchen air conditioning system comprises an air conditioning component and an oil fume suction component, the air conditioning component comprises a compressor, a first heat exchanger and a second heat exchanger, the compressor, the first heat exchanger and the second heat exchanger are connected by a refrigerant pipeline, the oil fume suction component has a casing, a smoke exhaust channel is arranged in the casing, and is characterized in that: the smoke exhaust channel comprises a first smoke exhaust channel and a second smoke exhaust channel, the first heat exchanger is installed in the first smoke exhaust channel or the second smoke exhaust channel, the inlet of the first smoke exhaust channel and the outlet of the second smoke exhaust channel are always open, the inlet of the second smoke exhaust channel is installed with a first valve plate, the outlet of the first smoke exhaust channel is installed with a second valve plate, and a driving mechanism for driving the first valve plate and the second valve plate to be linked is also installed in the smoke exhaust channel, so that one of the first valve plate and the second valve plate is in an open state and the other valve plate is in a closed state.

[0008] The driving mechanism can have various structures. Preferably, the driving mechanism includes a motor, a rocker arm, a first spring, a second spring and a third spring. The first end of the rocker arm is installed on the output shaft of the motor, the first end of the first spring and the first end of the second spring are installed on the second end of the rocker arm, the second end of the first spring is installed on the first valve plate and keeps the first valve plate with a tendency to open, the second end of the second spring is connected to the second valve plate and keeps the second valve plate with a tendency to open, and the third spring is connected to the first valve plate and keeps the first valve plate with a tendency to close.

[0009] Further preferably, the first spring is always in a stretched state, and the third spring is always in a compressed state, and the combined force of the pulling force of the first spring on the first valve plate and the elastic force of the third spring on the first valve plate keeps the first valve plate with a closing tendency.

[0010] In order to enable the first valve plate to be opened smoothly, the first spring and the third spring are arranged on the same side of the first valve plate, and the spring stiffness of the first spring is greater than the spring stiffness of the third spring. The first valve plate is in a vertical position in the closed state, and the first valve plate is deflected in the direction of the pulling force of the first spring in the open state.

[0011] In order to enable the second spring to exert a vertical force on the second valve plate, the outlet of the first smoke exhaust channel is vertically upward, the second valve plate is horizontally arranged above the outlet of the first smoke exhaust channel, the second spring is vertically arranged next to the outlet of the first smoke exhaust channel, the lower end of the second spring is connected to the second end of the rocker arm, and the upper end of the second spring is connected to the second valve plate through the valve stem.

[0012] The first smoke exhaust channel and the second smoke exhaust channel may have different distribution patterns relative to each other. Preferably, both the first smoke exhaust channel and the second smoke exhaust channel have at least a transverse smoke exhaust section, and the transverse smoke exhaust section of the first smoke exhaust channel is located below the transverse smoke exhaust section of the second smoke exhaust channel.

[0013] In order to prevent oil smoke from contaminating the first heat exchanger, the first heat exchanger is installed in the first smoke exhaust channel, and an oil fume purification device is also installed in the first smoke exhaust channel, and along the oil fume flow direction, the oil fume purification device is arranged upstream of the first heat exchanger.

[0014] Further preferably, a fume extractor fan is installed in the casing, and along the flow direction of the fume, the fume exhaust passage is arranged downstream of the fume extractor fan.

[0015] In order to make the system structure more compact, an air outlet channel isolated from the smoke exhaust channel is also provided in the casing, an air inlet and an air outlet of the air outlet channel are opened on the casing, an air outlet fan is installed in the air outlet channel, the air inlet is fluidically connected to the outside of the kitchen room or to the outside of the kitchen room, the air outlet of the air outlet channel is fluidically connected to the inside of the kitchen room, and the second heat exchanger is arranged in the air outlet channel.

[0016] Further preferably, the air outlet is arranged at the top of the casing and is externally connected to an upper air outlet duct, and the air outlet of the upper air outlet duct is fluidically connected to the kitchen room. After adopting the above structure, the system adopts a top air outlet form, and the air outlet of the upper air outlet duct can be arranged on the kitchen ceiling.

[0017] The compressor can be installed in multiple positions. Preferably, a compressor installation cavity isolated from the smoke exhaust channel and the air outlet channel is provided in the casing, and the compressor is installed in the compressor installation cavity.

[0018] Further preferably, the air outlet channel is located on the right side of the smoke exhaust channel, and the compressor installation cavity is located on the right side of the air outlet channel.

[0019] Further preferably, the outlet of the first smoke exhaust channel and the outlet of the second smoke exhaust channel are both connected to the smoke exhaust pipe.

[0020] As a preferred embodiment of any of the above solutions, a four-way valve is installed on the refrigerant pipeline, and a throttling device is installed on the refrigerant pipeline between the first heat exchanger and the second heat exchanger. In this way, the air conditioner can be switched between the cooling mode and the heating mode.

[0021] Compared with the prior art, the advantages of the present invention are that: the inlet of the first smoke exhaust channel and the outlet of the second smoke exhaust channel of the kitchen air conditioning system are always open, the inlet of the second smoke exhaust channel is installed with a first valve plate, and the outlet of the first smoke exhaust channel is installed with a second valve plate. The driving mechanism in the smoke exhaust channel can open the first smoke exhaust channel or the second smoke exhaust channel by driving the first valve plate and the second valve plate to link together, and the first heat exchanger is arranged in one of the smoke exhaust channels. When the system is working, by switching between the two smoke exhaust channels, in the oil fume suction mode, the oil fume at the flue outlet can be prevented from flowing back into the flue where the first heat exchanger is located. In the oil fume suction + air conditioning mode, the oil fume can take away the heat or cold of the first heat exchanger to improve the heat exchange effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention when the first smoke exhaust channel is open;

[0023] Figure 2 for Figure 1 Structural diagram of the middle smoke exhaust channel;

[0024] Figure 3 It is a schematic diagram of the structure of an embodiment of the present invention when the second smoke exhaust channel is in an open state;

[0025] Figure 4 for Figure 2 Schematic diagram of the structure of the smoke exhaust duct. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below with reference to the accompanying drawings.

[0027] like Figures 1 to 4As shown, the kitchen air conditioning system of this embodiment includes an air conditioning component and a fume extraction component. The air conditioning component includes a compressor 11, a first heat exchanger 12 and a second heat exchanger 13. The compressor 11, the first heat exchanger 12 and the second heat exchanger 13 are connected through a refrigerant pipeline 14. A four-way valve 15 is installed on the refrigerant pipeline 14. The two ends of the four-way valve 15 are connected to the compressor 11, and the other two ends of the four-way valve 15 are respectively connected to the first heat exchanger 12 and the second heat exchanger 13. A throttling component 16 is installed on the refrigerant pipeline 14 between the first heat exchanger 12 and the second heat exchanger 13. A refrigerant flows through the cold channel 4. Common refrigerants can be water, ethylene glycol or propylene glycol, etc. By switching the four-way valve 15, the system can switch between cooling mode and heating mode. The specific working principle of the air conditioning component 1 is the same as that of the existing air conditioner, and will not be described in detail here.

[0028] by Figure 1 The direction indicated by the middle arrow A is right. The oil fume suction component has a housing 20. The housing 20 is provided with a mutually isolated exhaust channel 21, an air outlet channel 22 and a compressor installation chamber 28. The air outlet channel 22 is located on the right side of the exhaust channel 21, and the compressor installation chamber 28 is located on the right side of the air outlet channel 22. The first heat exchanger 12 is installed in the exhaust channel 21, the second heat exchanger 13 is installed in the air outlet channel 22, and the compressor 11 is installed in the compressor installation chamber 28. An oil fume suction fan 25 is installed at the lower part of the housing 20. The oil fume suction fan 25 of this embodiment adopts a horizontally arranged centrifugal fan. The so-called horizontal arrangement means that the motor shaft of the fan is arranged vertically. In addition, along the flow direction of the oil fume, the exhaust channel 21 is arranged downstream of the oil fume suction fan 25.

[0029] The smoke exhaust channel 21 of this embodiment includes a first smoke exhaust channel 211 and a second smoke exhaust channel 212. Both the first smoke exhaust channel 211 and the second smoke exhaust channel 212 have at least a transverse smoke exhaust section. The transverse smoke exhaust section of the first smoke exhaust channel 211 is located below the transverse smoke exhaust section of the second smoke exhaust channel 212. The oil fume suction fan 25 is located below the first smoke exhaust channel 211. The first heat exchanger 12 is installed in the first smoke exhaust channel 211. In order to prevent the oil fume from polluting the first heat exchanger 12, an oil fume purification device 6 is also installed in the first smoke exhaust channel 211, and the oil fume purification device 6 is arranged upstream of the first heat exchanger 12 along the oil fume flow direction. The oil fume purification device 6 can generally adopt various electrostatic purification devices in the prior art.

[0030] In this embodiment, the inlet of the first smoke exhaust channel 211 and the outlet of the second smoke exhaust channel 212 are always open, the inlet of the second smoke exhaust channel 212 is installed with the first valve plate 3, the outlet of the first smoke exhaust channel 211 is installed with the second valve plate 4, and the exhaust channel 21 is installed with a driving mechanism 5 for driving the first valve plate 3 and the second valve plate 4 to be linked, so that one of the first valve plate 3 and the second valve plate 4 is in an open state and the other valve plate is in a closed state, that is, the switching between the first smoke exhaust channel 211 and the second smoke exhaust channel 212 is realized. In this embodiment, the outlet of the first smoke exhaust channel 211 and the outlet of the second smoke exhaust channel 212 are both connected to the exhaust pipe 7.

[0031] The driving mechanism 5 of this embodiment includes a motor 51, a rocker arm 52, a first spring 53, a second spring 54 and a third spring 55, wherein the first end of the rocker arm 52 is mounted on the output shaft of the motor 51, the first end of the first spring 53 and the first end of the second spring 54 are mounted on the second end of the rocker arm 52, the second end of the first spring 53 is mounted on the first valve plate 3 and keeps the first valve plate 3 with an opening tendency, the second end of the second spring 54 is connected to the second valve plate 4 and keeps the second valve plate 4 with an opening tendency, and the third spring 55 is connected to the first valve plate 3 and keeps the first valve plate 3 with a closing tendency.

[0032] In this embodiment, the first spring 53 and the third spring 55 are arranged on the right side of the first valve plate 3. The first spring 53 is always in a stretched state, that is, the first spring 53 generates a pulling force to the right on the first valve plate 3, and the third spring 55 is always in a compressed state, that is, the third spring 55 generates a left elastic force or a thrust on the first valve plate 3.

[0033] like Figure 2 As shown, when the first valve disc 3 is in the closed state, the first valve disc 3 is in a vertical position, and the combined force formed by the pulling force of the first spring 53 on the first valve disc 3 and the elastic force of the third spring 55 on the first valve disc 3 keeps the first valve disc 3 in a closing trend. In addition, the spring stiffness of the first spring 53 of this embodiment is greater than the spring stiffness of the third spring 55, so that when the swing rod 52 swings right, the pulling force increment of the first spring 53 is greater than the thrust increment of the third spring 55, thereby reducing the above combined force acting on the first valve disc 3.

[0034] The outlet of the first smoke exhaust channel 211 is vertically upward, the second valve plate 4 is horizontally arranged above the outlet of the first smoke exhaust channel 211, the second spring 54 is vertically arranged on the left side of the outlet of the first smoke exhaust channel 211, the lower end of the second spring 54 is connected to the second end of the rocker arm 52, and the upper end of the second spring 54 is connected to the second valve plate 4 through the valve stem 56.

[0035] The housing 20 is provided with an air inlet 23 and an air outlet 24 of the air outlet channel 22. An air outlet fan 26 is installed in the air outlet channel 22. The air inlet 23 is fluidly connected to the outside of the kitchen or to the outside of the kitchen. The air outlet 24 of the air outlet channel 22 is arranged at the top of the housing 20 and is externally connected to an upper air outlet pipe 27. The air outlet of the upper air outlet pipe 27 is fluidly connected to the inside of the kitchen, and finally air is supplied to the inside of the kitchen from the air outlet of the upper air outlet pipe 27. In addition, the air outlet 24 of the air outlet channel 22 can also be directly connected to the inside of the kitchen, for example, the air outlet 24 can be arranged on the front of the housing 20.

[0036] The action process of the first valve plate 3 and the second valve plate 4 of the kitchen air conditioning system and the system working principle are as follows:

[0037] When the range hood and the air conditioner are not turned on, the first spring 53 is in a stretched state, the second spring 54 and the third spring 55 are in a compressed state, and the combined force of the first spring 53 and the third spring 55 acting on the first valve plate 3 is directed to the left, so that the first valve plate 3 is in a vertical position, that is, the first valve plate 3 is in a closed state. The gravity of the second valve plate 4 is greater than the force of the second spring 54 on the second valve plate 4, and the second valve plate 4 is in a closed state. At this time, the second spring 54 is compressed.

[0038] like Figure 1 and Figure 2 As shown, when the air conditioner is turned on, the swing rod 52 is in a vertical position, the combined force of the first spring 53 and the third spring 55 on the first valve plate 3 is greater than the wind force acting on the first valve plate 3, the first valve plate 3 is in a vertical position, and the entrance of the second smoke exhaust channel 212 is closed; the wind force acting on the second valve plate 4 is greater than the tension of the second spring 54 and the gravity of the second valve plate 4, the second spring 54 is in a stretched state, the second valve plate 4 is opened, and the outlet of the first smoke exhaust channel 211 is opened. As a result, the first smoke exhaust channel 211 is opened and the second smoke exhaust channel 212 is closed.

[0039] In the cooling mode, the first heat exchanger 12 is a condenser, and the second heat exchanger 13 is an evaporator.

[0040] When both the range hood and the air conditioner are turned on, the oil smoke is discharged into the exhaust pipe 7 through the first exhaust channel 211, and the oil smoke airflow passes over the surface of the first heat exchanger 12 to cool and dissipate the heat of the first heat exchanger 12, thereby reducing the temperature of the coolant flowing through the first heat exchanger 12, thereby improving the heat exchange effect of the first heat exchanger, and further improving the energy efficiency of the air conditioner. At the same time, under the action of the air outlet fan 26, the cold air comes out of the air outlet 24 and enters the upper air outlet duct 27, and then is transported to the kitchen room.

[0041] In the heating mode, the first heat exchanger 12 is an evaporator, and the second heat exchanger 13 is a condenser. The upper air outlet duct 27 sends warm air to the kitchen, and the cold air of the first heat exchanger 12 is discharged into the exhaust pipe 7 along with the oil smoke.

[0042] like Figure 3 and Figure 4 As shown, when only the range hood is turned on, the motor 51 drives the swing rod 52 to swing right, and the combined force of the first spring 53 and the third spring 55 decreases. The combined force is less than the wind force acting on the first valve plate 3, so that the first valve plate 3 deflects to the right, and the entrance of the second smoke exhaust channel 212 is opened, that is, the second smoke exhaust channel 212 is opened. At the same time, under the combined force of the gravity of the second valve plate 4, the force of the second spring 54 on the second valve plate 4, and the wind force acting on the second valve plate 4, the second valve plate 4 moves downward and closes the outlet of the first smoke exhaust channel 211. At this time, the second spring 54 is in a compressed state, the first smoke exhaust channel 211 is closed, and the smoke sucked in by the range hood fan 25 is discharged into the smoke exhaust pipe 7 through the second smoke exhaust channel 212.

[0043] The "fluid connection" referred to in the present invention refers to the spatial position relationship between two parts or parts (hereinafter collectively referred to as the first part and the second part respectively), that is, the fluid (gas, liquid or a mixture of the two) can flow from the first part along the flow path or / and be transported to the second part. The first part and the second part can be directly connected, or the first part and the second part can be indirectly connected through at least one third party. The third party can be a fluid channel such as a pipe, channel, duct, guide member, hole, groove, etc., or it can be a chamber allowing fluid to flow through, or a combination of the above.

Claims

1. A kitchen air conditioning system, comprising an air conditioning component and an oil fume suction component, wherein the air conditioning component comprises a compressor (11), a first heat exchanger (12) and a second heat exchanger (13), wherein the compressor (11), the first heat exchanger (12) and the second heat exchanger (13) are connected via a refrigerant pipeline (14), and the oil fume suction component comprises a casing (20), wherein a smoke exhaust passage (21) is provided in the casing (20), and wherein: The smoke exhaust channel (21) comprises a first smoke exhaust channel (211) and a second smoke exhaust channel (212); the first heat exchanger (12) is installed in the first smoke exhaust channel (211) or the second smoke exhaust channel (212); the inlet of the first smoke exhaust channel (211) and the outlet of the second smoke exhaust channel (212) are always open; the inlet of the second smoke exhaust channel (212) is installed with a first valve plate (3); the outlet of the first smoke exhaust channel (211) is installed with a second valve plate (4); a driving mechanism (5) for driving the first valve plate (3) and the second valve plate (4) to be linked is also installed in the smoke exhaust channel (21), thereby causing the first valve plate (3) to be opened. One of the first and second valve plates (4) is in an open state and the other valve plate is in a closed state, the driving mechanism (5) comprising a motor (51), a swing rod (52), a first spring (53), a second spring (54) and a third spring (55), the first end of the swing rod (52) being mounted on an output shaft of the motor (51), the first end of the first spring (53) and the first end of the second spring (54) being mounted on the second end of the swing rod (52), the second end of the first spring (53) being mounted on the first valve plate (3) and maintaining the first valve plate (3) with a tendency to open, the second end of the second spring (54) being mounted on the ... output shaft of the motor (51), the first end of the first spring (53) and the first end of the second spring (54) being mounted on the output shaft of the motor (51), the first end of the first spring (53) and the first end of the second spring (54) being mounted on the output shaft of the motor (51), the first end of the first spring (53) and the first end of the second spring (54) being mounted on the output shaft of the motor (51), the first end of the first spring (53) and the second end of the second spring (54) being mounted on the output shaft of the motor (51), the first end of the first spring (53) and the second end of the second spring (54) being mounted on the output shaft of the motor (51), the first end of the first spring ( The third spring (55) is connected to the first valve plate (3) and keeps the first valve plate (3) with a tendency to open. The first spring (53) is always in a stretched state, and the third spring (55) is always in a compressed state. The combined force of the pulling force of the first spring (53) on the first valve plate (3) and the elastic force of the third spring (55) on the first valve plate (3) keeps the first valve plate (3) with a tendency to close. The first spring (53) and the third spring (55) are arranged on the same side of the first valve plate (3), and the first spring (53) is always in a stretched state. The third spring (55) is always in a compressed state. The combined force of the pulling force of the first spring (53) on the first valve plate (3) and the elastic force of the third spring (55) on the first valve plate (3) keeps the first valve plate (3) with a tendency to close. The spring stiffness is greater than the spring stiffness of the third spring (55); the first valve plate (3) is in a vertical position in a closed state; the first valve plate (3) is deflected in the direction of the pulling force of the first spring (53) in an open state; the outlet of the first smoke exhaust channel (211) is vertically upward; the second valve plate (4) is horizontally arranged above the outlet of the first smoke exhaust channel (211); the second spring (54) is vertically arranged next to the outlet of the first smoke exhaust channel (211); the lower end of the second spring (54) is connected to the second end of the rocker arm (52); and the upper end of the second spring (54) is connected to the second valve plate (4) through a valve stem (56).

2. The kitchen air conditioning system according to claim 1, characterized in that: The first smoke exhaust channel (211) and the second smoke exhaust channel (212) both have at least a transverse smoke exhaust section, and the transverse smoke exhaust section of the first smoke exhaust channel (211) is located below the transverse smoke exhaust section of the second smoke exhaust channel (212).

3. The kitchen air conditioning system according to claim 1, characterized in that: The first heat exchanger (12) is installed in the first smoke exhaust channel (211), and an oil fume purification device (6) is also installed in the first smoke exhaust channel (211), and along the oil fume flow direction, the oil fume purification device (6) is arranged upstream of the first heat exchanger (12).

4. The kitchen air conditioning system according to claim 1, characterized in that: A fume extractor fan (25) is installed in the housing (20), and the fume exhaust passage (21) is arranged downstream of the fume extractor fan (25) along the flow direction of the fume.

5. The kitchen air conditioning system according to claim 1, characterized in that: An air outlet channel (22) isolated from the smoke exhaust channel (21) is also provided in the housing (20); an air inlet (23) and an air outlet (24) of the air outlet channel (22) are provided on the housing (20); an air outlet fan (26) is installed in the air outlet channel (22); the air inlet (23) is fluidically connected to the inside of the kitchen or to the outside of the kitchen; the air outlet (24) of the air outlet channel (22) is fluidically connected to the inside of the kitchen; and the second heat exchanger (13) is provided in the air outlet channel (22).

6. The kitchen air conditioning system according to claim 5, characterized in that: The air outlet (24) is arranged at the top of the casing (20) and is externally connected to an upper air outlet pipe (27), and the air outlet of the upper air outlet pipe (27) is fluidically connected to the kitchen interior.

7. The kitchen air conditioning system according to claim 5, characterized in that: A compressor installation cavity (28) isolated from the smoke exhaust passage (21) and the air outlet passage (22) is also provided in the casing (20), and the compressor (11) is installed in the compressor installation cavity (28).

8. The kitchen air conditioning system according to claim 7, characterized in that: The air outlet channel (22) is located on the right side of the smoke exhaust channel (21), and the compressor installation cavity (28) is located on the right side of the air outlet channel (22).

9. The kitchen air conditioning system according to claim 1, characterized in that: The outlet of the first smoke exhaust channel (211) and the outlet of the second smoke exhaust channel (212) are both in communication with the smoke exhaust pipe (7).

10. The kitchen air conditioning system according to any one of claims 1 to 9, characterized in that: A four-way valve (15) is installed on the refrigerant pipeline (14), and a throttling device (16) is installed on the refrigerant pipeline between the first heat exchanger (12) and the second heat exchanger (13).

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