Kitchen air conditioning device

Abstract

The utility model relates to the technical field of household appliances, disclose a kind of air conditioning equipment for kitchen, including casing and refrigeration system, first air passage and second air passage are also provided in casing, first air passage is used to pass through the air flow discharged by extractor hood;Second air passage is used to pass through the heat dissipation airflow flowing through condenser;Wherein, the outlet of second air passage is communicated with the side wall of first air passage, to form three-way confluence structure;Three-way confluence structure is fixed with flow guide piece inside;Flow guide piece has flow guide surface, flow guide surface is used to receive the heat dissipation airflow from second air passage, and it is guided to the airflow outlet direction of first air passage.The air conditioning equipment for kitchen described above, by the setting of flow guide piece, reduce the local pressure loss when heat dissipation airflow converges into main pipe airflow, solve the flow disorder problem generated due to the direct intersection of two air flows, avoid heat dissipation airflow backflow phenomenon.

Description

Technical Field

[0001] This utility model relates to the technical field, and in particular to an air conditioning device for kitchens. Background Technology

[0002] The kitchen environment generates a lot of fumes and heat due to cooking activities, resulting in excessively high temperatures and a harsh working environment in the summer.

[0003] To solve this problem, air conditioning equipment specifically designed for kitchens is needed. For example... Figure 1 As shown, a feasible solution is to combine the heat dissipation system of the air conditioner with the smoke extraction system of the range hood, so that the heat generated by the air conditioner condenser is discharged outdoors along with the cooking fumes. This type of equipment typically includes an airflow channel for the airflow from the range hood and an airflow channel for the airflow from the air conditioner condenser, with the two channels converging at a T-junction before being discharged together.

[0004] Typically, the airflow generated by the range hood fan is high-velocity and large-volume, forming the main airflow; while the airflow generated by the condenser fan in an air conditioner is relatively low-velocity and small-volume, forming the branch airflow. When the high-speed main airflow passes through the T-junction, according to fluid mechanics principles, a low-pressure zone may be generated near the branch outlet. This low-pressure zone not only hinders the smooth merging of the branch airflow but may even draw some of the main airflow back into the branch, creating a "backflow" phenomenon. This backflow severely affects the condenser's heat dissipation, causing hot air to accumulate inside the equipment, significantly reducing the air conditioner's cooling efficiency, increasing the compressor load, and in severe cases, even leading to system overheating protection and shutdown.

[0005] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Utility Model Content

[0006] In view of the problems pointed out in the background art, this application provides a kitchen air conditioning device, which aims to solve the technical problem that backflow and reduced heat dissipation efficiency are easily caused by airflow interference when the airflow of the range hood and the airflow of the air conditioner are combined.

[0007] To achieve the above-mentioned objectives, the present invention employs the following technical solution:

[0008] In some embodiments of this application, a kitchen air conditioning device is provided, comprising:

[0009] A housing; a refrigeration system, disposed within the housing, comprising a compressor, a condenser, a throttling device, and an evaporator connected in sequence by refrigeration pipes; characterized in that the housing further comprises: a first airflow channel for airflow discharged by a range hood; a second airflow channel for heat dissipation airflow flowing through the condenser; wherein the outlet of the second airflow channel is connected to the side wall of the first airflow channel to form a three-way confluence structure; a guide component is fixedly disposed within the three-way confluence structure; the guide component has a guide surface for receiving the heat dissipation airflow from the second airflow channel and guiding it towards the airflow outlet direction of the first airflow channel.

[0010] In some embodiments of this application, the flow guide is an arc-shaped flow guide plate, and the flow guide surface is the concave surface of the arc-shaped flow guide plate. The arc-shaped flow guide plate structure enables smoother deflection of the cooling airflow, further reducing flow resistance and improving the flow guiding effect.

[0011] In some embodiments of this application, the guiding surface of the arc-shaped guide plate is an arc surface with a radius of R1, wherein the radius R1 ranges from 38mm to 42mm. This radius range can achieve optimal guiding performance, ensuring smooth airflow while avoiding turbulence or airflow obstruction caused by excessive or insufficient curvature.

[0012] In some embodiments of this application, the arc-shaped guide plate extends from the outlet of the second airflow channel into the interior of the first airflow channel to a depth of L1, wherein the value of the depth L1 is in the range of 11mm ≤ L1 ≤ 15mm. Within this depth range, effective airflow guidance can be ensured while avoiding obstruction or insufficient guidance of exhaust airflow due to excessively large or small dimensions.

[0013] In some embodiments of this application, the arc-shaped guide plate extends from the outlet of the second airflow channel along the axial direction of the first airflow channel towards the outlet of the first airflow channel by a length L2, wherein the value of the length L2 is in the range of 20mm ≤ L2 ≤ 22mm. This length range ensures effective airflow guidance while avoiding obstruction or insufficient guidance of heat dissipation airflow due to excessively large or small dimensions.

[0014] In some embodiments of this application, a confluence angle α is formed between the mainstream airflow direction in the second airflow channel and the mainstream airflow direction in the first airflow channel, wherein the value of the confluence angle α ranges from 30°≤α≤50°. By setting a small-angle oblique confluence, the impact between the two airflows is reduced macroscopically, making the confluence process smoother and effectively suppressing backflow.

[0015] In some embodiments of this application, the first airflow channel is formed by a channel pipe, the outlet end of which extends out of the housing; a condenser fan is also provided inside the housing, the condenser fan being used to drive airflow through the condenser; the condenser fan is a centrifugal fan, the volute outlet of the centrifugal fan being connected to the side wall of the channel pipe to form the second airflow channel. The centrifugal fan can provide higher air pressure, which helps to overcome confluence resistance; the connection between the centrifugal fan volute outlet and the channel pipe results in a compact structure, high component integration, reduced additional connecting pipes, and lower costs and assembly complexity.

[0016] In some embodiments of this application, the channel pipe has a variable cross-section structure, having a rectangular inlet for connecting to the exhaust port of a range hood and a circular outlet as the main air outlet. The variable cross-section structure of the channel pipe greatly improves the ease of installation and versatility of the equipment, allowing it to be directly matched with mainstream range hoods with rectangular exhaust ports and circular exhaust pipes on the market.

[0017] In some embodiments of this application, the front of the housing is provided with: an evaporator-side return air inlet and an evaporator-side air outlet, for forming an indoor airflow circulation that exchanges heat with the evaporator; and a condenser-side return air inlet, for introducing air that exchanges heat with the condenser. When the installation space of the air conditioning equipment is limited, its front-inlet and front-outlet air structure is beneficial to optimizing airflow organization and ensuring smooth air circulation.

[0018] In some embodiments of this application, the inlet of the first airflow channel is located on the lower surface of the housing; the outlet of the first airflow channel is located on the upper surface of the housing. This layout clearly defines the overall installation form of the device, which is bottom-in and top-out, and is suitable for its application scenario of being installed above a range hood.

[0019] Compared with the prior art, the advantages and positive effects of this utility model are:

[0020] The aforementioned kitchen air conditioning unit has a first airflow channel and a second airflow channel inside its casing. Through the design of a guide component, the cooling airflow from the second airflow channel can smoothly merge into the oil fume airflow from the first airflow channel. This reduces local pressure loss when the cooling airflow merges into the main airflow, effectively solving the flow turbulence problem caused by the direct convergence of the two airflows. It also avoids backflow of cooling airflow caused by negative pressure generated by the high-speed main airflow, ensuring that the condenser can continuously, stably, and efficiently dissipate heat. Simultaneously, it prevents oil fume backflow from contaminating the internal structure of the air conditioner, thereby guaranteeing the cooling performance and operational reliability of the entire air conditioning unit.

[0021] Other features and advantages of this utility model will become clearer after reading the detailed embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This illustrates an existing kitchen air conditioning smoke extraction solution;

[0024] Figure 2 A perspective view of a kitchen air conditioning unit according to some embodiments is shown;

[0025] Figure 3 A top view of a kitchen air conditioning unit according to some embodiments is shown;

[0026] Figure 4 A bottom view of a kitchen air conditioning unit according to some embodiments is shown;

[0027] Figure 5 A top view of the internal structure of a kitchen air conditioning unit according to some embodiments is shown;

[0028] Figure 6 A perspective view of the internal structure of a kitchen air conditioning unit according to some embodiments is shown;

[0029] Figure 7 A cross-sectional view of a kitchen air conditioning unit according to some embodiments is shown;

[0030] Figure 8 It shows Figure 7 Enlarged view at point I;

[0031] Figure 9 A schematic diagram showing the confluence angle of a first airflow passage and a second airflow passage in a kitchen air conditioning unit according to some embodiments is shown;

[0032] Figure 10 A schematic diagram of the assembly of a kitchen air conditioning unit and a range hood according to some embodiments is shown;

[0033] Explanation of reference numerals in the attached figures:

[0034] 1-Air conditioning equipment; 2-Range hood; 3-Exhaust duct;

[0035] 100 - Casing;

[0036] 200 - Evaporator;

[0037] 300-Condenser;

[0038] 400 - Compressor;

[0039] 500 - Condenser fan; 510 - Volute casing; 511 - Connecting part;

[0040] 600-Evaporator Fan;

[0041] 700 - Flow guide; 710 - Flow guide surface;

[0042] 800 - Channel tube; 810 - Inlet end; 820 - Outlet end. Detailed Implementation

[0043] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0045] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0046] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0048] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0049] like Figures 2-10 As shown, some embodiments of this application provide a kitchen air conditioning device. This device aims to solve the technical problem that backflow and reduced heat dissipation efficiency can easily occur due to airflow interference when the oil fume airflow from a range hood and the heat dissipation airflow from an air conditioner converge.

[0050] See Figure 1 , Figure 5 , Figure 6 and Figure 10 The kitchen air conditioning unit 1 mainly includes a casing 100 and a refrigeration system located inside the casing 100.

[0051] The housing 100 provides structural support and protection for the internal components of the entire air conditioner.

[0052] The refrigeration system is the core of the air conditioning cooling function, and mainly includes a compressor 400, a condenser 300, a throttling device and an evaporator 200 connected in sequence by refrigeration pipes.

[0053] The compressor 400 is the core of the refrigeration system, responsible for compressing the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gaseous refrigerant.

[0054] The condenser 300 is a heat exchanger where the high-temperature, high-pressure gaseous refrigerant releases heat to the surrounding environment and condenses itself into a high-pressure, medium-temperature liquid refrigerant.

[0055] Throttling devices, such as capillary tubes or expansion valves, are responsible for throttling and reducing the pressure of high-pressure liquid refrigerant, turning it into a low-temperature, low-pressure liquid refrigerant, in preparation for subsequent evaporation and heat absorption.

[0056] Evaporator 200 is another heat exchanger where low-temperature, low-pressure liquid refrigerant evaporates, absorbing heat from the surrounding environment (such as kitchen air that needs to be cooled), and becomes low-temperature, low-pressure gaseous refrigerant, which is then drawn back into compressor 400 to complete a refrigeration cycle.

[0057] The casing 100 is equipped with an evaporator-side return air inlet a and an evaporator-side outlet c. Indoor air is driven by the evaporator fan 600, drawn in from the evaporator-side return air inlet a, flows over the surface of the evaporator 200, is cooled down, and then blown out from the evaporator-side outlet c to provide cool air for the kitchen.

[0058] The casing 100 is also equipped with a condenser-side return air inlet b. Air is driven by the condenser fan 500 and drawn in from the condenser-side return air inlet b. It flows over the surface of the condenser 300, carrying away the heat released by the refrigerant and forming a high-temperature heat dissipation airflow.

[0059] The main technical solution of this application lies in the confluence design of two airflows that need to be discharged outdoors.

[0060] The first airflow is the oil fume airflow containing oil fumes discharged from the range hood 2; the second airflow is the heat dissipation airflow formed after flowing through the air conditioner condenser 300, which carries a large amount of waste heat.

[0061] Therefore, such as Figure 7 As shown, the device has a first airflow channel A and a second airflow channel B inside the housing 100.

[0062] The inlet of the first airflow channel A is used to connect with the exhaust port of the range hood 2, so it is mainly used for the airflow discharged through the range hood 2.

[0063] The second airflow channel B is used to guide and pass the heat dissipation airflow after passing through the condenser 300.

[0064] These two channels do not lead independently to the outside. Instead, the outlet of the second airflow channel B is connected to the side wall of the first airflow channel A, allowing the second airflow to merge into the first airflow from the side, thus forming a three-way confluence structure.

[0065] To solve the problem of backflow of air, the core technical solution of this application is to fix a guide 700 in the three-way confluence structure. The function of the guide 700 is to actively guide and constrain the heat dissipation airflow flowing out from the second airflow channel B.

[0066] Specifically, the guide member 700 has a guide surface 710. The guide surface 710 is used to receive the heat dissipation airflow from the second airflow channel B and smoothly guide it to the airflow outlet direction of the first airflow channel A.

[0067] The aforementioned kitchen air conditioning unit 1, through the arrangement of the guide component 700, allows the heat dissipation airflow of the second airflow channel B (branch) to smoothly merge into the oil fume airflow of the first airflow channel A (main channel), reducing the local pressure loss when the heat dissipation airflow merges into the main airflow. This effectively solves the problem of flow turbulence caused by the direct convergence of the two airflows, avoids the backflow of heat dissipation airflow caused by the negative pressure generated by the high-speed main airflow, ensures that the condenser 300 can continuously, stably, and efficiently dissipate heat, and at the same time prevents oil fume backflow from polluting the internal structure of the air conditioner, thereby ensuring the cooling performance and operational reliability of the entire air conditioning unit 1.

[0068] In some embodiments, such as Figure 8 As shown, in order to obtain a better flow guiding effect, the specific shape of the flow guiding component 700 can be designed as an arc-shaped flow guiding plate.

[0069] Correspondingly, its guiding surface 710 is the concave surface of the arc-shaped guide plate.

[0070] Compared to a simple flat inclined plate, a curved surface can provide a continuously changing turning angle for the airflow, making the turning process of the airflow more gradual and natural.

[0071] This design minimizes energy loss caused by airflow impact during turning and effectively suppresses flow separation, allowing the airflow to better conform to the guide surface 710, thereby achieving lower flow resistance and better guidance effect.

[0072] In some embodiments, the geometric parameters of the arc-shaped guide vane were further optimized.

[0073] like Figure 8 As shown, the guide surface 710 of the arc-shaped guide plate is designed as a circular arc surface. The radius R1 of this circular arc surface is preferably within the range of 38mm ≤ R1 ≤ 42mm.

[0074] When the radius R is too small (<38mm), the curvature of the surface is too large, the airflow turns too sharply, and vortices are easily generated on the downstream side of the guide vane, increasing flow resistance. When the radius R is too large (>42mm), the curvature of the surface is too small, the overall size of the guide vane will increase accordingly, and it may extend too far into the first airflow channel A, causing unnecessary obstruction of its mainstream.

[0075] Therefore, limiting the radius R to the range of 38mm to 42mm is the best balance between the diversion effect and the overall smoke exhaust performance.

[0076] In some embodiments, the depth dimension of the arc-shaped guide plate extending from the outlet of the second airflow channel B into the interior of the first airflow channel A (radial along the first airflow channel A) is defined as L1. The value range of the depth dimension L1 is preferably 11mm≤L1≤15mm, which can achieve the best balance between ensuring smoke exhaust effect and realizing effective airflow guidance.

[0077] If L1 is too small (<11mm), the guide plate is too short and the guiding effect is insufficient; conversely, if L1 is too large (>15mm), the guide plate extends too far into the first airflow channel A, which will significantly reduce the effective flow area of ​​the first airflow channel A, increase the flow resistance of the range hood 2, and affect the smoke extraction effect of the range hood 2.

[0078] In some embodiments, the arc-shaped guide plate extends from the outlet of the second airflow channel B along the axial direction of the first airflow channel A toward the outlet direction of the first airflow channel A by a length dimension L2, and the value of the length dimension L2 is preferably in the range of 20mm≤L2≤22mm.

[0079] If L2 is too small (<20mm), the guide plate is too short and the guiding effect is insufficient; conversely, if L2 is too large (>22mm), the guide plate extends too far into the first airflow channel A, increasing the blocking area of ​​the outlet of the second airflow channel B, increasing the flow resistance of the heat dissipation airflow of the condenser 300, and affecting the heat exchange effect of the condenser 300.

[0080] Therefore, limiting the length dimension L2 to the range of 11mm to 15mm achieves the best balance between airflow and heat dissipation performance.

[0081] In some embodiments, the tee junction structure has been further optimized to make the merging process smoother and to further suppress backflow.

[0082] Specifically, the second airflow channel B and the first airflow channel A do not intersect perpendicularly, but intersect at an acute angle, forming a confluence structure similar to a "Y".

[0083] like Figure 9 As shown, the mainstream airflow direction in the second airflow channel B and the mainstream airflow direction in the first airflow channel A form a confluence angle α. By setting a small-angle oblique confluence, the impact between the two airflows is reduced macroscopically, making the confluence process smoother and effectively suppressing backflow.

[0084] Simulation analysis shows that when the confluence angle α ranges from 30° to 50°, the backflow phenomenon can be significantly improved.

[0085] If α is too small (<30°), the excessively gentle angle makes the airflow in the second channel B have little effect on the entrainment and acceleration of the airflow in the first channel A, failing to effectively utilize fluid momentum to suppress backflow. Conversely, if α is too large (>50°), a similar T-shaped tee will be formed, intensifying the frontal impact when the two airflows meet, significantly increasing flow resistance, and raising the risk of backflow.

[0086] Preferably, the improvement in backflow is most significant when the confluence angle α is 45°.

[0087] In some embodiments, the first airflow channel A and the second airflow channel B are specifically designed.

[0088] like Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the first airflow channel A is composed of a channel pipe 800. The outlet end 820 of the channel pipe 800 can directly penetrate the upper surface of the housing 100, forming an integral total air outlet for discharging oil fume airflow and heat dissipation airflow.

[0089] In this embodiment, the condenser fan 500 is a centrifugal fan. Compared to axial fans, centrifugal fans can generate higher air pressure in a smaller space, which helps to overcome confluence resistance.

[0090] The outlet of the centrifugal fan's volute 510 can be directly connected to the side wall opening of the channel pipe 800. In this way, the portion extending from the outlet of the centrifugal fan's volute 510 naturally forms the second airflow channel B.

[0091] This design features a compact structure and high component integration, reducing additional connecting pipes and lowering costs and assembly complexity.

[0092] In some embodiments, such as Figure 6 As shown, the outlet of the centrifugal fan volute 510 can be provided with a special connection part 511, which is provided with a flange or snap-fit ​​structure for sealing and fixing connection with the corresponding interface on the side wall of the channel pipe 800.

[0093] In some embodiments, the arc-shaped guide vane can be integrally formed at the outlet of the centrifugal fan volute 510.

[0094] In other embodiments, the arc-shaped guide vane may also be a separate component, which is fixedly connected to the volute 510 of the centrifugal fan by means of welding or other methods.

[0095] In some embodiments, such as Figure 3 and Figure 4 As shown, the channel pipe 800 is designed with a variable cross-section structure. Its inlet end 810, which is the end that connects with the exhaust port of the range hood 2, has a rectangular cross-section; its outlet end 820, which is the end that passes through the casing 100 to form the main air outlet, has a circular cross-section.

[0096] Currently, the top exhaust vents of most range hoods on the market are rectangular, while standard exhaust pipes are mostly circular.

[0097] This variable cross-section structure allows the equipment to be installed between the range hood 2 and the exhaust duct 3 without the need for complex irregular-shaped adapters, greatly simplifying the installation process and improving the equipment's ease of installation and versatility.

[0098] In some embodiments, such as Figure 10 As shown, the inlet of the first airflow channel A, i.e. the interface connecting to the range hood 2, is located on the lower surface of the housing 100; the outlet of the first airflow channel A, i.e. the main air outlet, is located on the upper surface of the housing 100.

[0099] This vertically integrated airflow layout, with the air entering from the bottom and exiting from the top, is designed to match the application scenario of its installation on top of the range hood 2. This allows the entire "range hood-air conditioner-exhaust pipe" system to be stacked vertically, resulting in a compact structure and saving valuable kitchen space.

[0100] In some embodiments, see Figure 2 The evaporator-side return air inlet a, the evaporator-side outlet air inlet c, and the condenser-side return air inlet b are all located at the front of the casing 100.

[0101] This design primarily considers the practical installation environment and aesthetic requirements: the main body of the kitchen range hood 2 is usually embedded in the cabinet, while the air conditioner 1 can be installed above the range hood 2. By adapting the cabinet above the range hood 2, the air conditioner 1 can be placed in this position. Since the space on the left and right sides of the cabinet is relatively limited, concentrating the air inlet and outlet at the front of the device helps optimize airflow and ensure smooth air circulation.

[0102] In other embodiments, the condenser-side return air vent b can also be located on the back or side of the housing 100 and can be connected to an independent air inlet duct that leads directly to the outside.

[0103] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

[0104] For ease of explanation, the above description has been provided in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Various modifications and variations can be obtained based on the above teachings. The selection and description of the above embodiments are for the purpose of better explaining the principles and practical applications, thereby enabling those skilled in the art to better utilize the described embodiments and various different variations of embodiments suitable for specific use considerations.

Claims

1. A kitchen air conditioning unit, comprising: chassis; A refrigeration system, located inside the housing, includes a compressor, a condenser, a throttling device, and an evaporator connected in sequence by refrigeration pipes; The feature is that the housing further includes: The first airflow channel is used for the airflow exhausted by the range hood; The second airflow channel is used for the heat dissipation airflow flowing through the condenser; The outlet of the second airflow channel is connected to the side wall of the first airflow channel to form a three-way confluence structure. The three-way confluence structure is equipped with a flow guide; the flow guide has a flow guide surface, which is used to receive the heat dissipation airflow from the second airflow channel and guide it to the airflow outlet direction of the first airflow channel.

2. The kitchen air conditioning equipment according to claim 1, characterized in that, The flow guide is an arc-shaped flow guide plate, and the flow guide surface is the concave surface of the arc-shaped flow guide plate.

3. The kitchen air conditioning equipment according to claim 2, characterized in that, The guiding surface of the arc-shaped guide plate is an arc surface with a radius of R1. The value of the radius R1 is in the range of 38mm≤R1≤42mm.

4. The kitchen air conditioning equipment according to claim 2, characterized in that, The arc-shaped guide plate extends from the outlet of the second airflow channel into the interior of the first airflow channel at a depth of L1, and the value of the depth L1 is in the range of 11mm≤L1≤15mm.

5. The kitchen air conditioning equipment according to claim 2, characterized in that, The arc-shaped guide plate extends from the outlet of the second airflow channel along the axial direction of the first airflow channel toward the outlet of the first airflow channel by a length dimension L2, and the value of the length dimension L2 is in the range of 20mm≤L2≤22mm.

6. The kitchen air conditioning equipment according to claim 1, characterized in that, The mainstream airflow direction in the second airflow channel and the mainstream airflow direction in the first airflow channel form a confluence angle α, and the value of the confluence angle α is in the range of 30°≤α≤50°.

7. The kitchen air conditioning equipment according to claim 1, characterized in that, The first airflow channel is composed of a channel tube, and the outlet end of the channel tube extends out of the housing; The housing is also equipped with a condenser fan, which drives air to flow through the condenser; the condenser fan is a centrifugal fan, and the outlet of the centrifugal fan is connected to the side wall of the channel pipe to form the second airflow channel.

8. The kitchen air conditioning equipment according to claim 7, characterized in that, The channel pipe has a variable cross-section structure, with a rectangular inlet for connecting to the exhaust port of the range hood and a circular outlet as the main air outlet.

9. The kitchen air conditioning equipment according to claim 1, characterized in that, The front part of the housing is provided with: The evaporator-side return air inlet and evaporator-side outlet are used to form an indoor airflow circulation that exchanges heat with the evaporator; and The condenser-side return air inlet is used to introduce air that exchanges heat with the condenser.

10. The kitchen air conditioning equipment according to claim 1, characterized in that, The inlet of the first airflow channel is located on the lower surface of the housing; the outlet of the first airflow channel is located on the upper surface of the housing.

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