A kitchen air handler

Abstract

This utility model discloses a kitchen air handling unit that can effectively improve the air quality in the area where the cook is located and enhance the cook's experience. The kitchen air handling unit includes: a range hood module, which includes a smoke collection section and a smoke exhaust section, with the smoke collection section located below the smoke exhaust section; and a fresh air module, which is arranged parallel to the smoke exhaust section on the smoke collection section. The fresh air module has an air inlet and a first air outlet on its front side, with the air inlet close to the smoke collection section and the first air outlet located above the air inlet. An air filter and a fresh air fan are arranged between the air inlet and the first air outlet.

Description

Technical Field

[0001] This utility model relates to the technical field of kitchen appliances, and in particular to a kitchen air handling unit. Background Technology

[0002] In existing technologies, the main way to deal with the problem of cooking fumes in the kitchen is through range hoods. Some range hoods have added a cooling function to the traditional range hood to solve the problem of temperature rise during the cooking process.

[0003] Range hoods with cooling functions can blow cool air to the cook, lowering the ambient temperature. However, during cooking, the fumes contain a significant amount of oil particles, which the range hood cannot completely absorb. Therefore, a considerable amount of oil fumes still escapes from around the stove during cooking, and this amount increases as cooking time goes on, worsening air quality and further impacting the cook's experience.

[0004] Although some existing cooling range hoods incorporate designs that introduce fresh external air—for example, Chinese patent CN220038575U discloses a range hood with a cooling function—which introduces fresh air from outside the kitchen, filters and purifies the incoming air, and then cools it before blowing it out to ensure kitchen air quality, the cold air blown out by these hoods is always at a low velocity. High velocities would disrupt the smoke collection chamber environment of the range hood system, inevitably causing cooking fumes escaping from above the stove to be blown towards the cook, resulting in less than ideal air quality. Furthermore, introducing fresh external air can create positive pressure in the kitchen, forcing the fumes-laden air into other spaces in the house, such as the dining room and living room.

[0005] In addition, existing technologies also include methods to purify kitchen air by independently setting up kitchen air purification devices. However, these devices target the overall air quality of the kitchen, resulting in long purification times and difficulty in quickly improving the air quality in the local area where the cook is located. Furthermore, the range hood and kitchen appliances need to be installed separately, which is costly and inconvenient to use. Utility Model Content

[0006] The main purpose of this invention is to provide a kitchen air handling unit that can effectively improve the air quality in the area where the cooking user is located and enhance the user's cooking experience.

[0007] To achieve the above objectives, the kitchen air handling unit includes:

[0008] A range hood module, comprising a smoke collection section and a smoke exhaust section, wherein the smoke collection section is located below the smoke exhaust section;

[0009] The fresh air module is arranged side by side with the smoke exhaust unit on the smoke collection unit. The front of the fresh air module has an air inlet and a first air outlet. The air inlet is close to the smoke collection unit, and the first air outlet is located above the air inlet. An air filter and a fresh air fan are arranged between the air inlet and the first air outlet.

[0010] In this way, the fresh air module can absorb the oil fume particles that escape from the smoke collection section of the range hood module, reducing the amount of oil fume particles in the kitchen space. In particular, the air inlet of the fresh air module faces the cooking user and is close to the smoke collection section, which can absorb the oil fume particles floating around the cooking user's head. At the same time, purified fresh air is blown from above the cooking user's head, thereby forming a local circulating purification space in the area between the cooking user's head and the front of the range hood module, improving the air quality breathed by the cooking user and enhancing the cooking experience.

[0011] Furthermore, the fresh air blowing from above can form an air curtain, reducing the amount of oil fume particles floating in the kitchen space that enter the localized circulation and purification space above the cook's head.

[0012] Furthermore, the fresh air module purifies the localized space where the cooking user is located, with a small effective area, and can quickly improve the air quality breathed by the cooking user.

[0013] In some alternative embodiments, the kitchen air handling unit further includes:

[0014] A cooling air module is arranged side by side with the fresh air module and the smoke exhaust unit on the smoke collection unit. A second air outlet is provided on its front side, and its air inlet side is connected to the air outlet side of the fresh air module.

[0015] In this way, purified cool air can be delivered to users through the cooling module, reducing the stuffiness of cooking users in high-smoke environments and further enhancing the user's cooking experience.

[0016] In some alternative embodiments, the fresh air module further includes:

[0017] The air distribution unit includes an air cavity and an air inlet, a first air distribution port and a second air distribution port connected to the air cavity. The air inlet is connected to the air outlet side of the fresh air fan, the first air distribution port is connected to the first air outlet, and the second air distribution port is connected to the air inlet side of the cold air module.

[0018] The first air outlet is equipped with a first regulating valve to control the opening degree of the air outlet, and the second air outlet is equipped with a second regulating valve to control the opening degree of the air outlet.

[0019] In this way, the fresh air volume and cooling air volume can be adjusted according to different cooking environments, improving the user experience while controlling the operating energy consumption of the kitchen air handling unit.

[0020] In some alternative embodiments, the cooling module includes a cooling fan.

[0021] In this way, the air cooler and the fresh air distribution unit operate simultaneously to ensure the volume of cool air.

[0022] In some alternative embodiments, the cooling air module and the fresh air module are respectively disposed on both sides of the smoke exhaust section.

[0023] In this way, the range hood module is placed in the middle, ensuring smooth exhaust airflow and making the kitchen air handling unit symmetrical, aesthetically pleasing, and harmonious. In addition, placing the cold air module and fresh air module on both sides of the exhaust section allows for the improvement and optimization of the range hood without changing its existing structure. This eliminates the need for major changes to the overall exhaust structure, ensuring compatibility with existing range hoods and facilitating widespread application.

[0024] In some alternative embodiments, the first air outlet and the second air outlet are at the same height.

[0025] In this way, the first and second air outlets are kept flush, which facilitates cabinet design and maintains harmony and aesthetics. Secondly, it makes it easier to integrate the first and second air outlets into a single structure, simplifying the air outlet structure.

[0026] In some alternative embodiments, the air inlet and the first air outlet are provided with rotatable air guide grilles.

[0027] In this way, the air intake and exhaust directions can be changed through the air guide grille to accommodate cooking users of different heights.

[0028] In some alternative embodiments, the fresh air module is provided with a slide rail, and the air filter is retractably mounted on the slide rail.

[0029] In this way, the air filter can be installed and removed in a pull-out manner, making it easy to replace.

[0030] In some alternative embodiments, the air filter includes a HEPA filter;

[0031] Alternatively, the air filter may include a HEPA filter and an activated carbon filter, with the activated carbon filter located on the air intake side of the HEPA filter.

[0032] In this way, the HEPA filter can effectively filter oil fume particles in the kitchen air, improve the air quality in the kitchen, and when combined with the activated carbon filter, it can also remove kitchen odors, creating a good cooking environment for cooks.

[0033] In some alternative embodiments, the kitchen air handling unit further includes:

[0034] The sensor module includes one or more of the following: PM2.5 sensor, VOC sensor, CH4 sensor, CO sensor, temperature sensor, and humidity sensor.

[0035] The control module controls the operation of the fresh air module based on the detection results of the sensor module.

[0036] In this way, by using different sensors, it is possible to detect different pollutants, temperature, humidity and other conditions in the kitchen air, and thus treat the kitchen air differently as needed.

[0037] In some alternative embodiments, the kitchen air handling unit further includes a display module disposed on the front of the smoke collection section for displaying the detection results of the sensor module.

[0038] In this way, the display module can intuitively show cooking users the current air quality in the kitchen, serving as a reminder / warning.

[0039] Compared with existing technologies, the kitchen air handling unit provided by this utility model combines a range hood module and a fresh air module. These modules work together, with the range hood module removing most of the cooking fumes and the fresh air module purifying the remaining fumes, thus reducing the harm of kitchen fumes to the cook. The fresh air module features a front-down air intake and exhaust design, effectively removing oil fume particles around the cook's head while simultaneously blowing purified fresh air from above the cook's head. This creates a localized circulating purification space in the cook's area (the area between the cook's head and the front of the range hood module), rapidly improving the air quality the cook breathes during cooking and enhancing their cooking experience. Attached Figure Description

[0040] Figure 1 This is a structural schematic diagram of an existing top-side dual-suction range hood.

[0041] Figure 2 A schematic diagram of the structure of the first type of kitchen air handling unit provided by this utility model.

[0042] Figure 3 A schematic diagram of the structure of the second type of kitchen air handling unit provided by this utility model.

[0043] Figure 4 A schematic diagram of the structure of the third type of kitchen air handling unit provided by this utility model.

[0044] Figure 5 This is a structural schematic diagram of the fourth type of kitchen air handling unit provided by this utility model.

[0045] Figure 6 A schematic diagram of the structure of the fifth type of kitchen air handling unit provided by this utility model.

[0046] Figure 7 A cross-sectional view of the fifth type of kitchen air handling unit provided by this utility model.

[0047] Figure 8 A schematic diagram of the structure of the sixth type of kitchen air handling unit provided by this utility model.

[0048] Figure 9 A schematic diagram of the structure of the first type of fresh air module provided by this utility model.

[0049] Figure 10 This is a structural schematic diagram of the second type of fresh air module provided by this utility model.

[0050] Figure 11 This is a structural schematic diagram of the third type of fresh air module provided by this utility model.

[0051] Figure 12 This is a structural schematic diagram of a cooling air module provided by this utility model.

[0052] Figure 13 The control principle diagram of the seventh type of kitchen air handling unit provided by this utility model. Attached image description:

[0054] 100 kitchen air handling units;

[0055] Smoke hood module 110, smoke exhaust section 111, smoke collection section 112, upper smoke inlet 1121, lower smoke inlet 1122, decorative panel section 113, control display panel 1131;

[0056] Fresh air module 120, first housing 121, air inlet 122, air filter 123, fresh air fan 124, first air outlet 125, air distribution module 126, first regulating valve 1261, second regulating valve 1262, lower slide rail 127, upper slide rail 128.

[0057] Cooling module 130, second housing 131, refrigeration unit 132, compressor 1321, condenser 1322, evaporator 1323, cooling fan 1324, second air outlet 133, partition 134;

[0058] Connection module 140;

[0059] Sensor module 150;

[0060] Control module 160;

[0061] Display module 170. Detailed Implementation

[0062] The kitchen air handling unit according to an embodiment of the present invention will now be described in detail with reference to the accompanying drawings.

[0063] Example 1

[0064] Reference Figure 1 The present invention relates to a conventional top-side dual-suction range hood 110, which includes a smoke exhaust section 111 and a smoke collection section 112. The smoke exhaust section 111 includes a duct housing and a smoke exhaust fan disposed within the duct housing. The smoke collection section 112 includes a smoke collection hood, which is connected to the duct housing. The top and bottom of the smoke collection hood are respectively provided with an upper smoke inlet 1121 and a lower smoke inlet 1122. When the smoke exhaust fan is running, the fumes generated during cooking enter the smoke collection chamber through the upper smoke inlet 1121 and the lower smoke inlet 1122 and are discharged by the smoke exhaust fan.

[0065] A decorative panel 113 is provided on the upper front side of the smoke hood. The decorative panel 113 can be a single piece of glass panel with an oil-resistant coating. A control display panel 1131 is provided on the inner side of the decorative panel to display the operating status of the range hood.

[0066] In addition, the control display panel 1131 can also be selectively set to a video area, which can be used for online retrieval of recipes to meet the needs of some users who want to look up recipes while cooking.

[0067] The control display panel 1131 can also be optionally equipped with a radar sensor to sense the gesture operation of the cooking user, thereby controlling the opening and closing of the range hood.

[0068] The control display panel 1131 can also optionally integrate a microphone and speaker to allow cooking users to operate the range hood by voice and play audio and video.

[0069] It should be noted that the above settings are all existing technologies, and their specific implementation can be found in the publicly available literature of existing range hoods. Their working principles will not be described in detail here.

[0070] It should also be noted that the range hood module of this utility model can be either the above-mentioned top and side dual-suction range hood, or other existing range hoods, such as side-suction range hoods and top-suction range hoods.

[0071] Based on the above-mentioned top-side dual-suction range hood 110, this utility model has made improvements to it. The improved range hood not only has the function of sucking and exhausting oil fumes, but also can blow fresh air to the cooking user, improving the air quality around the cooking user. For the convenience of zoning, the improved range hood will be referred to as a kitchen air handling unit below.

[0072] Reference Figure 2The kitchen air handling unit includes a range hood module 110 and a fresh air module 120. The range hood module 110 has been described above, and the fresh air module 120 will be further described below.

[0073] Continue to refer to Figure 2 as well as Figure 9 The fresh air module 120 is arranged side-by-side with the smoke exhaust section 111 on the smoke collection section 112. It includes a first housing 121, on which an air inlet 122 and a first air outlet 125 are provided. The air inlet 122 is close to the smoke collection section 112, and the first air outlet 125 is located above the air inlet 122 and near the top of the smoke exhaust section 111. An air filter 123 and a fresh air fan 124 are disposed inside the first housing 121. The air inlet 122, air filter 123, fresh air fan 124, and first air outlet 125 are arranged sequentially along the airflow direction.

[0074] When the fresh air module 120 is running, it draws in oil fume particles that have drifted to the inner top area of ​​the smoke collection section 112 (corresponding to the area near the decorative panel section 113). These particles are then filtered and purified by the air filter 123, and the purified fresh air is blown from the top of the range hood to the outer top of the smoke collection section 112 (corresponding to the area facing forward on the decorative panel section 113). Typically, the cook's head is positioned in front of the decorative panel section 113. By installing the fresh air module 120, oil fume particles drifting around the cook's head can be drawn away, while purified fresh air is blown from above the cook's head. This creates a localized circulating purification space in the cook's area (the area between the cook's head and the front of the range hood module), quickly improving the air quality the cook breathes during cooking and enhancing their cooking experience.

[0075] In this embodiment, the fresh air module 120 is set as an independent module on the range hood module 110.

[0076] The number of fresh air modules 120 can be one or two. In this embodiment, the number of fresh air modules 120 is one.

[0077] Reference Figure 3 In another embodiment, there are two fresh air modules 120, which are symmetrically arranged on both sides of the smoke exhaust section 111, so that users can breathe purified air when they are in the working area of ​​the range hood.

[0078] It should be noted that the fresh air module 120 is not limited to being installed on both sides of the smoke exhaust section 111; it can also be on the same side, as long as it can absorb the oil fume particles around the cook's head and blow purified fresh air to the cook.

[0079] The fresh air module 120 and the range hood module 110 can also be integrated together.

[0080] Reference Figure 4 In another embodiment, the fresh air module 120 shares a housing with the range hood module 110. The air inlet 122 and the first air outlet 125 of the fresh air module 120 extend along the horizontal direction of the range hood module, forming an air inlet 122 and a first air outlet 125 above the decorative panel of the range hood that can cover the smoking area in the horizontal direction. This increases the range of oil fume particles adsorbed by the fresh air module 120 and the range of purified fresh air blown, ensuring that cooking users can breathe clean air when they are active near the range hood.

[0081] With the extension of the air inlet and outlet of the fresh air module 120, the fresh air fan 124 and air filter 123 of the fresh air module 120 can be selectively added to ensure the purification effect and air supply effect.

[0082] Reference Figure 5 In another embodiment, a fresh air fan 124 and an air filter 123 are respectively provided on both sides of the smoke exhaust section 111, so as to ensure that the air intake and air blowing volume in the horizontal direction on the front side of the decorative panel section 113 are more uniform, and the breathing experience of the cooking user in different positions remains consistent.

[0083] In this embodiment, the air filter 123 is a HEPA filter, which can effectively filter oil fume particles and some volatile substances generated during cooking. In other embodiments, the air filter can also be a combination of a HEPA filter and an activated carbon filter. The activated carbon filter is located on the air intake side of the HEPA filter, and by adding the activated carbon filter, odors can be further purified.

[0084] Preferably, in this embodiment, the air inlet 122 and the first air outlet 125 are equipped with rotatable air guide grilles (not shown in the figure). By adjusting the air guide grilles, the height of the area where the fresh air module operates can be adjusted to accommodate users of different heights and different cooking distances. For users of different heights, as the user's height increases, the air guide grille of the air inlet 122 can be rotated upwards to allow the air inlet to draw away oil fume particles from higher areas, thus accommodating the height of the cooking user. As the distance between the cooking user and the range hood increases, the air guide grilles of the air inlet 122 and the first air outlet 125 can be rotated upwards to different degrees to draw away oil fume particles from areas farther away from the range hood and blow fresh air to further areas, thus accommodating different distances between the cooking user and the range hood.

[0085] When the fresh air module is not in operation, the air guide grille of the first air outlet 125 is closed, shutting off the air inlet 122 and the first air outlet 125 to prevent oil fumes from entering and contaminating the first air outlet 125. Correspondingly, the air guide grille of the air inlet 122 can also be set to a closed state when the fresh air module 120 is not in operation, reducing oil fume contamination of the air filter 123 during non-operational periods and extending the service life of the air filter 123.

[0086] The air guide grille can be electrically or manually controlled, preferably electrically, so that in conjunction with human body sensors, it can automatically adjust the area of ​​the fresh air module based on the position and height of the cooking user, thereby improving the user experience.

[0087] Example 2

[0088] Based on the above embodiment 1, this utility model adds a cooling air function to the kitchen air handling unit, so that the kitchen air handling unit can blow both purified fresh air and purified cool air, reducing the stuffiness of cooking users and further improving the user's cooking experience.

[0089] Reference Figure 6 In this embodiment, the kitchen air handling unit includes a range hood module 110, a fresh air module 120, and a cooling air module 130. The fresh air module 120 and the cooling air module 130 are connected by a connecting module 140. The range hood module 110 and the fresh air module 120 are described in accordance with the description of Embodiment 1. The following describes the parts that differ from Embodiment 1.

[0090] Continue to refer to Figure 6 , Figure 10 as well as Figure 12 In this embodiment, the cold air module 130, the fresh air module 120, and the smoke exhaust section 111 are arranged side by side on the smoke collection section 112. The cold air module 130 includes a second housing 131, on which a second air outlet 133 is provided. The second air outlet 133 is close to the top of the smoke exhaust section 111. A cooling unit 132 is provided inside the second housing 131. The cooling unit 132 is connected to the air outlet side of the fresh air module 120 through a connecting module 140.

[0091] In this embodiment, the connection module 140 is a connection pipe that can connect the refrigeration unit 132 and the fresh air module 120, so that the purified fresh air generated by the fresh air module 120 can be delivered to the refrigeration unit 132 for cooling.

[0092] When the fresh air module 120 is running, the cooling air module 130 is also activated. Part of the purified fresh air is blown out through the first air outlet 125, and the other part can enter the cooling air module 130 through the connection module 140. After being cooled by the cooling unit 132, it is blown out through the second air outlet 133. Thus, purified fresh air and purified cool air are blown to the cooking user at the same time, which not only improves the breathing quality of the cooking user during the cooking process, but also provides a cooling sensation, further enhancing the user experience.

[0093] Reference Figure 7 as well as Figure 10 Preferably, in this embodiment, an air distribution unit 126 is further provided within the fresh air module 120. The air distribution unit 126 has an air cavity and an air inlet, a first air distribution port, and a second air distribution port communicating with the air cavity. The air inlet is connected to the air outlet side of the fresh air fan 124, the first air distribution port is connected to the first air outlet 125, and the second air distribution port is connected to the air inlet side of the cold air module 130. The first air distribution port is provided with a first regulating valve 1262 that controls the opening degree of the air outlet, and the second air distribution port is provided with a second regulating valve 1261 that controls the opening degree of the air outlet.

[0094] Therefore, the opening and closing size of the first air vent can be controlled by the first regulating valve 1262, and the opening and closing size of the second air vent can be controlled by the second regulating valve 1261, thereby adjusting the ratio of purified fresh air to purified cool air as needed and switching the air supply mode of the kitchen air handling unit. When the first regulating valve 1262 closes the first air vent and the second regulating valve 1261 opens the second air vent, the kitchen air handling unit only blows purified cool air; when the first regulating valve 1262 opens the first air vent and the second regulating valve 1261 closes the second air vent, the kitchen air handling unit only blows purified fresh air; when the first regulating valve 1262 opens the first air vent and the second regulating valve 1261 opens the second air vent, the kitchen air handling unit blows both purified cool air and purified fresh air simultaneously.

[0095] Continue to refer to Figure 12 Preferably, in this embodiment, a cooling fan 1324 is installed inside the second housing 131. Since purified fresh air needs to pass through the air distribution unit 126, the connecting module 140, and the cooling unit 132 before being blown out as purified cold air, the airflow resistance is greater. The fresh air fan 124 needs to overcome this greater airflow resistance to successfully blow out the purified cold air, which requires increasing the power of the fresh air fan 124, placing higher demands on its noise reduction. By installing the cooling fan 1324 inside the second housing 131, which primarily blows out the cold air while the fresh air fan 124 provides auxiliary power, the two work together to reduce the power requirements of the fan, facilitating the noise reduction design of the kitchen air handling unit and reducing the noise from the purified cold air being blown out. Furthermore, it ensures that the airflow of the purified cold air is sufficient to provide a cooling sensation to the user.

[0096] The cooling air module 130 and the fresh air module 120 can be installed on the same side or on the left and right sides of the smoke exhaust section 111.

[0097] Continue to refer to Figure 6 In this embodiment, the cold air module 130 and the fresh air module 120 are respectively arranged on both sides of the exhaust section 111. This arrangement places the range hood module 110 in the middle, ensuring smooth exhaust duct flow and creating a symmetrical and aesthetically pleasing overall appearance for the kitchen air handling unit. Furthermore, placing the cold air module 130 and the fresh air module 120 on both sides of the exhaust section 111 allows for improvements and optimizations to the range hood without altering its existing structure. This eliminates the need for significant changes to the overall exhaust structure, ensuring compatibility with existing range hoods and facilitating wider application.

[0098] Continue to refer to Figure 6 In this embodiment, the first air outlet 125 and the second air outlet 133 are at the same height. This keeps the first air outlet 125 and the second air outlet 133 flush, which facilitates cabinet design and maintains harmony and aesthetics. Secondly, it allows the first air outlet 125 and the second air outlet 133 to be made into an integrated structure, simplifying the air outlet structure.

[0099] In this embodiment, the cold air module 130, the fresh air module 120, and the connection module 140 are independent modules that can be modularly assembled together based on the range hood module 110 to form a kitchen air handling unit. This modular design makes the solution compatible with existing traditional range hoods, facilitating promotion and application. Secondly, it facilitates separate maintenance of each module, reducing maintenance costs.

[0100] Of course, one or more of the cooling air module 130, fresh air module 120, and connection module 140 can also be integrated into the range hood module 110. (See reference...) Figure 8 Taking the integration of the cold air module 130, fresh air module 120, and connection module 140 into the range hood module 110 as an example, the cold air module 130, fresh air module 120, and range hood module 110 share a common housing. The internal area of ​​this housing is divided into three independent areas: the middle area serves as the exhaust duct, the right side as the fresh air duct, and the left side as the cold air duct. A connection channel is provided on the front of the housing, which connects the fresh air duct and the cold air duct via the connection module 140. The air inlet 122 extends horizontally along the range hood module 110, and the first air outlet 125 and the second air outlet 133 are connected, thus forming an air inlet and outlet on the housing above the smoke collection section 112 that can horizontally cover the smoke-generating area. This increases the air supply range of the cold air module 130 and the fresh air module 120, ensuring that users can breathe clean air and feel cool breezes when they are near the range hood.

[0101] As the core filter component, air filter 123 gradually accumulates oily particles, dust, and other foreign matter over time, affecting its filtration efficiency. Therefore, it requires regular replacement and maintenance. To facilitate air filter replacement, in some preferred embodiments, the air filter adopts a pull-out structure for convenient disassembly and replacement.

[0102] Reference Figure 11 Specifically, an upper slide rail 128 and a lower slide rail 127 are arranged vertically opposite each other inside the first housing 121. The air filter 123 is slidably inserted between the upper slide rail 128 and the lower slide rail 127, and the user can remove and replace the air filter 123 by pulling it out. The pull-out opening is located on the front of the first housing 121, allowing the user to directly pull out the old air filter from the front of the range hood and replace it with a new one.

[0103] The refrigeration unit 132 can be compression refrigeration and / or semiconductor refrigeration.

[0104] In this embodiment, the refrigeration unit 132 adopts a mature compression refrigeration solution. Specifically, referring to... Figure 12 A partition 134 is installed inside the second housing 131, dividing the internal space of the second housing 131 into two parts. An evaporator 1323 and a cooling fan 1324 are installed in the upper space. A connecting module 140 is connected to the upper space. A second air outlet 133 is opened on the outer wall of the upper space. The purified fresh air prepared by the fresh air module 120 can be delivered to the upper space of the second housing 131, cooled by the evaporator 1323, and then blown out by the cooling fan 1324. A condenser 1322 and a compressor 1321 are installed in the lower space. The compressor 1321 is connected to the condenser 1322 and the evaporator 1323. The three work together to cool the air. The cooling principle is based on existing compression refrigeration technology and will not be described in detail here.

[0105] Insulation material can also be installed on the partition 134 to reduce heat conduction between the lower space and the upper space.

[0106] The condenser 1322 can be cooled by water, air, or a combination of both. Taking water cooling as an example, cooling water can be sprayed onto the condenser, or the condenser can be cooled by water through a circulating water channel that is in contact with the condenser. The cooling water can come from the condensate of the evaporator, an external kitchen water line, or a water storage box.

[0107] Example 3

[0108] Based on the above embodiment 2, this utility model adds a sensor module, which can monitor the air quality in the kitchen. This allows for intelligent control of the fresh air module, the cooling air module, and the range hood module to work together and improve the air quality in the kitchen based on the detection results of the sensor module.

[0109] In this embodiment, the kitchen air handling unit includes a range hood module, a fresh air module, and a cooling air module. The fresh air module and the cooling air module are connected by a connecting module. The mechanical structure of the range hood module, fresh air module, cooling air module, and connecting module is described in Embodiment 2. This embodiment mainly improves the circuit control part of the kitchen air handling unit. The actual improvements of this embodiment from the circuit aspect are further described below.

[0110] See Figure 13 In this embodiment, the kitchen air handling unit further includes a sensor module 150, which includes one or more of a PM2.5 sensor, a VOC sensor, a CH4 sensor, a CO sensor, a temperature sensor, and a humidity sensor.

[0111] PM2.5 sensor: Used to monitor the concentration of oil fume particles in kitchen air and to determine the level of oil fume pollution in the kitchen.

[0112] VOC sensor: Used to monitor the concentration of VOCs in kitchen air, indicating the level of odor pollution in the kitchen.

[0113] CH4 sensor: Used to monitor the methane concentration in kitchen air. Methane is the main component of natural gas, accounting for 80%-95% of its content. By monitoring the methane concentration, it can be used to detect gas leaks.

[0114] CO sensor: Used to monitor the concentration of CO (carbon monoxide) in kitchen air. CO is a product of incomplete combustion of gas and is a colorless, odorless, and toxic gas. By monitoring the CO concentration, it is used to determine whether the gas is not burning completely.

[0115] Temperature and humidity sensors: used to monitor the temperature and humidity of the kitchen environment.

[0116] The kitchen air handling unit also includes a control module 160, which can receive the detection results from the sensor module 150 and control the fresh air module 120 and the cooling air module 130 to work individually or in concert based on the monitoring results, and control the display panel, indicator lights, buzzer, speaker and other devices to issue warning reminders.

[0117] For example, when either the PM2.5 sensor or the VOC sensor detects that the concentration of oil fume particles or the VOC concentration exceeds the preset values ​​for oil fume concentration and VOC concentration, the control module 160 drives the fresh air fan to purify the kitchen air. Furthermore, based on the difference or ratio between the actual monitored value and the preset value, the power of the fresh air fan is adjusted to regulate the purification airflow; the larger the difference / ratio, the greater the power of the fresh air fan.

[0118] When the temperature sensor detects that the kitchen temperature exceeds the preset value, the cooling unit and cooling fan are activated, and the second regulating valve is opened to introduce some purified fresh air into the cooling unit for cooling and then expelling it. When blowing cold air, the first regulating valve can be closed according to the required cooling air volume and / or fan speed, so that only purified cold air is delivered.

[0119] When the CH4 sensor detects that the actual methane concentration exceeds the preset methane value and the CO sensor detects that the actual CO concentration exceeds the preset CO value, the control module 160 will control the display panel to issue an audible warning and an illuminated warning (the control display panel integrates a speaker and an indicator light), and at the same time issue the warning, it will automatically turn on the range hood module 110 to exhaust gas to avoid the accumulation of gas or CO.

[0120] The humidity sensor and temperature sensor work together. When either the temperature sensor or the humidity sensor exceeds its preset value, the cooling module 130 is activated to perform cooling / dehumidification.

[0121] Preferably, the kitchen air handling unit also includes a display module 170. This display module 170 can be integrated with the control display panel of the range hood module, or it can be set up independently of the control display panel. In this embodiment, the display module 170 is integrated with the control display panel to display the detection results monitored by each sensor in the sensor module 150, allowing the user to understand the current state of the kitchen environment and adjust and control the temperature, humidity, oil fume concentration, and VOC concentration in the kitchen according to their own needs to achieve the best user experience.

[0122] Other configurations and operations of the kitchen air handling unit 100 according to embodiments 1-3 of this utility model are known to those skilled in the art and will not be described in detail here.

[0123] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 utility model 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 utility model.

[0124] Furthermore, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0125] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0126] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0127] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0128] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A kitchen air handling unit, characterized in that, include: A range hood module, comprising a smoke collection section and a smoke exhaust section, wherein the smoke collection section is located below the smoke exhaust section; The fresh air module is arranged side by side with the smoke exhaust unit on the smoke collection unit. The front of the fresh air module has an air inlet and a first air outlet. The air inlet is close to the smoke collection unit, and the first air outlet is located above the air inlet. An air filter and a fresh air fan are arranged between the air inlet and the first air outlet.

2. The kitchen air-handling unit of claim 1, wherein, Also includes: A cooling air module is arranged side by side with the fresh air module and the smoke exhaust unit on the smoke collection unit. A second air outlet is provided on its front side, and its air inlet side is connected to the air outlet side of the fresh air module.

3. The kitchen air-handling unit of claim 2, wherein, The fresh air module also includes: The air distribution unit includes an air cavity and an air inlet, a first air distribution port and a second air distribution port connected to the air cavity. The air inlet is connected to the air outlet side of the fresh air fan, the first air distribution port is connected to the first air outlet, and the second air distribution port is connected to the air inlet side of the cold air module. The first air outlet is equipped with a first regulating valve to control the opening degree of the air outlet, and the second air outlet is equipped with a second regulating valve to control the opening degree of the air outlet.

4. The kitchen air handling unit as described in claim 3, characterized in that, The cooling module includes a cooling fan.

5. The kitchen air-handling unit of claim 2, wherein, The cold air module and the fresh air module are respectively located on both sides of the smoke exhaust section.

6. The kitchen air-handling unit of claim 2, wherein, The first air outlet and the second air outlet are at the same height.

7. The kitchen air handling unit as described in claim 1, characterized in that, The air inlet and the first air outlet are equipped with rotatable air guide grilles.

8. The kitchen air handling unit as described in claim 1, characterized in that, The fresh air module is equipped with a sliding rail, and the air filter is removably mounted on the sliding rail.

9. The kitchen air-handling machine of claim 1, wherein, The air filter includes a HEPA filter; Alternatively, the air filter may include a HEPA filter and an activated carbon filter, with the activated carbon filter located on the air intake side of the HEPA filter.

10. A kitchen air handling machine as claimed in any one of claims 1 to 9, characterised in that, Also includes: The sensor module includes one or more of the following: PM2.5 sensor, VOC sensor, CH4 sensor, CO sensor, temperature sensor, and humidity sensor. The control module controls the operation of the fresh air module based on the detection results of the sensor module.

11. The kitchen air-handling machine of claim 10, wherein, It also includes a display module, which is disposed on the front of the smoke collection section and is used to display the detection results of the sensor module.

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