Kitchen fresh air and internal circulation purification system

Abstract

The utility model provides a kitchen fresh air and internal circulation purification system. The kitchen fresh air and internal circulation purification system comprises a fan device, an outdoor air inlet pipeline, an indoor air inlet pipeline and an indoor air outlet pipeline. The fan device comprises a box body and a fan, and the box body is provided with a first side wall and a second side wall; the first side wall is provided with a first air inlet, a second air inlet and a baffle. The baffle can slide between a first position and a second position; when the baffle is located at the first position, the first air inlet is completely shielded, and when the baffle is located at the second position, the second air inlet is completely shielded; an air outlet is formed in the second side wall; the air outlet end of the outdoor air inlet pipeline and the air outlet end of the indoor air inlet pipeline are connected with the first air inlet and the second air inlet correspondingly, and the air inlet end of the indoor air outlet pipeline is connected with the air outlet. The kitchen fresh air and pressure supplement device can supplement fresh air and pressure into a kitchen, reduce the temperature of the kitchen and achieve internal circulation purification of air in the kitchen.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation equipment, in particular to a kitchen fresh air and internal circulation purification system. Background Art

[0002] In home kitchens, especially in Chinese kitchens, a lot of high-temperature oil smoke and steam are generated because of the heavy cooking habits. In order to exhaust these oil smoke and steam, a range hood is generally installed. In order to exhaust the oil smoke quickly and timely, the air volume of the range hood fan is relatively large. At present, the air volume of the range hood fan is generally 1200m 3 / h or more. Although the rated air volume of the range hood is large, there is no effective source of air supply in the closed kitchen, which greatly reduces the effective air volume of the range hood and greatly reduces the exhaust effect. In addition, outdoor polluted air can easily squeeze into the kitchen through the gaps in doors and windows, causing secondary pollution. It can also cause odors from sewers to flow back into the kitchen, deteriorating the air quality in the kitchen. At the same time, the stove needs oxygen to burn, and the closed kitchen environment will lead to a decrease in oxygen content and reduce combustion efficiency. If the user chooses to open the window for ventilation, he will also face the problem of outdoor pollutants entering the kitchen and irregular airflow outside the window disrupting the fume extraction effect. In addition, the temperature in the kitchen is high due to the use of fire and electricity to cook and heat food. Especially in summer, the temperature in the kitchen is very high, and a lot of oil smoke will be generated when frying, stir-frying, braising, etc. In this environment, the cooking experience in the kitchen is very poor.

[0003] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Utility Model Content

[0004] The utility model aims to provide a kitchen fresh air and internal circulation purification system, which can replenish fresh air and pressure into the kitchen, reduce the kitchen temperature, and realize the internal circulation purification of the kitchen air.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A kitchen fresh air and internal circulation purification system, comprising a fan device and an outdoor air inlet duct, an indoor air inlet duct and an indoor air outlet duct connected to the fan device;

[0007] The fan device comprises a box body and a fan arranged in the box body, the box body having a first side wall and a second side wall corresponding to the air inlet end and the air outlet end of the fan respectively; the first side wall is provided with a first air inlet, a second air inlet and a baffle; the baffle is slidably arranged on the inner side of the first side wall and can slide between a first position and a second position; when the baffle is located at the first position, the first air inlet is completely blocked, and when the baffle is located at the second position, the second air inlet is completely blocked; the second side wall is provided with an air outlet;

[0008] The air outlet ends of the outdoor air inlet duct and the indoor air inlet duct are connected to the first air inlet and the second air inlet respectively, and the air inlet end of the indoor air outlet duct is connected to the air outlet.

[0009] According to one embodiment of the present utility model, there is a third position between the first position and the second position, and when the baffle is located at the third position, the first air inlet and the second air inlet are partially blocked or not blocked.

[0010] According to one embodiment of the utility model, the first air inlet and the second air inlet are horizontally arranged on the first side wall; a horizontal slide rail is respectively provided at the top and the bottom of the inner side of the first side wall, and the baffle is slidably arranged between the two slide rails.

[0011] According to an embodiment of the utility model, a sliding block is provided on the sliding rail, and the baffle is detachably connected to the sliding block.

[0012] According to one embodiment of the utility model, a horizontal rack is provided on the inner side of the baffle; a driving motor is provided in the middle of the inner side of the first side wall, and a driving gear meshing with the rack is provided on the output shaft of the driving motor.

[0013] According to one embodiment of the utility model, a horizontal crossbeam is respectively provided at the top and the bottom of the inner side of the first side wall, and the slide rail is arranged on the surface opposite to the crossbeam; a longitudinal beam is provided between the inner sides of the two crossbeams, and the drive motor is arranged on the outer side of the longitudinal beam.

[0014] According to one embodiment of the utility model, a filtering device is provided between the air inlet end of the fan and the first side wall.

[0015] According to one embodiment of the present utility model, the filtering device is a high-efficiency particulate filter.

[0016] According to one embodiment of the utility model, the kitchen fresh air and internal circulation purification system also includes a sensor for measuring air pressure and PM2.5, the sensor is arranged in the kitchen room, and the sensor and the drive motor are both connected to a control system.

[0017] According to one embodiment of the utility model, a suspension rod is provided on the top of the box body, which is fixedly connected to the kitchen roof;

[0018] And / or, the fan device, the outdoor air inlet duct, the indoor air inlet duct and the indoor air outlet duct are all located between the kitchen ceiling and the roof; the air inlet end of the outdoor air inlet duct is located outside the kitchen, the air inlet end of the indoor air inlet duct is located at the top of the kitchen ceiling away from the range hood, and the air outlet end of the indoor air outlet duct is located on the ceiling above the range hood.

[0019] Compared with the prior art, the advantages and beneficial effects of the embodiments of the present invention are:

[0020] The kitchen fresh air and internal circulation purification system provided by the embodiment of the utility model has two functional modes: one is fresh air replenishment and pressure replenishment, at this time, the baffle is located at the second position, the second air inlet is completely blocked, the outdoor fresh air enters the box through the outdoor air inlet duct and the first air inlet, and flows into the kitchen through the air outlet and the indoor air outlet duct, replenishes the air and pressure of the negative pressure caused by turning on the range hood, and at the same time, the temperature in the kitchen can be lowered by the outdoor fresh air; the second is indoor air internal circulation purification, at this time, the baffle is located at the first position, the first air inlet is completely blocked, the air in the kitchen enters the box through the indoor air inlet duct and the second air inlet, and flows into the kitchen again through the air outlet and the indoor air outlet duct, circulating back and forth to form an internal circulation. The kitchen fresh air and internal circulation purification system provided by the embodiment of the utility model can solve the problem that the negative pressure in the kitchen is caused by the activation of a large-displacement range hood, so that outdoor polluted air squeezes into the kitchen through door and window gaps, causing secondary pollution, worsening the kitchen air quality, and greatly reducing the smoking effect. At the same time, it can provide a low-cost and effective cooling solution for the kitchen, thereby improving the cooking experience in the kitchen; in addition, it can also quickly discharge the escaping fumes generated by cooking, thereby reducing the pollution to the air in the entire kitchen. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0022] Figure 1 A schematic diagram of the structure of a kitchen fresh air and internal circulation purification system provided by an embodiment of the utility model;

[0023] Figure 2 An enlarged schematic diagram of a kitchen fresh air and internal circulation purification system provided by an embodiment of the utility model;

[0024] Figure 3A schematic diagram of the internal structure of a kitchen fresh air and internal circulation purification system provided by an embodiment of the utility model;

[0025] Figure 4 A schematic diagram of the internal structure of the kitchen fresh air and internal circulation purification system from another angle provided by an embodiment of the utility model;

[0026] Figure 5 A schematic diagram of the internal structure of the kitchen fresh air and internal circulation purification system from another angle provided by an embodiment of the utility model;

[0027] Figure 6 A schematic diagram of the installation structure of the baffle of the kitchen fresh air and internal circulation purification system provided by the embodiment of the utility model;

[0028] Figure 7 A schematic diagram of the installation principle of the baffle of the kitchen fresh air and internal circulation purification system provided by the embodiment of the utility model;

[0029] Figure 8 A schematic diagram of the structure of a baffle of a kitchen fresh air and internal circulation purification system provided by an embodiment of the utility model;

[0030] Fig. 9 A schematic diagram of the appearance of a box of a kitchen fresh air and internal circulation purification system provided by an embodiment of the utility model;

[0031] Fig.10 A schematic diagram of the appearance of a box of a kitchen fresh air and internal circulation purification system provided by another embodiment of the utility model;

[0032] Fig.11 This is a schematic diagram of the installation position of the kitchen fresh air and internal circulation purification system provided in an embodiment of the utility model.

[0033] Description of reference numerals:

[0034] 1. Fan device; 11. Box body; 111. First side wall; 1111. First air inlet; 1112. Second air inlet; 112. Second side wall; 1121. Air outlet; 12. Fan; 13. Baffle; 131. Rack; 14. Slide rail; 141. Slider; 15. Drive motor; 16. Drive gear; 17. Crossbeam; 18. Longitudinal beam; 19. Filter device; 2. Outdoor air inlet duct; 3. Indoor air inlet duct; 4. Indoor air outlet duct; 5. Ceiling; 6. Roof; 7. Suspension rod. DETAILED DESCRIPTION

[0035] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present invention and does not limit the present invention. In fact, it will be clear to those skilled in the art that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as a part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desired that the present invention includes such modifications and variations within the scope of the appended claims and their equivalents.

[0036] In the description of the present invention, "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprising" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, but do not exclude other elements or objects. The directions or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like are based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected", "connected" and "set" used in the present invention should be understood in a broad sense, for example, they can be fixedly connected or detachably connected; they can be directly connected or indirectly connected through an intermediate component; they can be wired electrical connections, radio connections, or wireless communication signal connections. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0037] like Figure 1 , Figure 2 As shown, the embodiment of the utility model provides a kitchen fresh air and internal circulation purification system, including a fan device 1 and an outdoor air inlet duct 2, an indoor air inlet duct 3 and an indoor air outlet duct 4 connected to the fan device 1. Figure 2 The upper part in is defined as above, Figure 2 The below in the text box is defined as below.

[0038] like Figure 3-Figure 5As shown, the fan device 1 includes a box body 11 and a fan 12 arranged in the box body 11, and the box body 11 has a first side wall 111 and a second side wall 112 corresponding to the air inlet end and the air outlet end of the fan 12 respectively. The first side wall 111 is provided with a first air inlet 1111, a second air inlet 1112 and a baffle 13. The air outlet ends of the outdoor air inlet duct 2 and the indoor air inlet duct 3 are connected to the first air inlet 1111 and the second air inlet 1112 respectively. The baffle 13 is slidably arranged on the inner side of the first side wall 111 and can slide between a first position and a second position. When the baffle 13 is located at the first position, the first air inlet 1111 is completely blocked, and when the baffle 13 is located at the second position, the second air inlet 1112 is completely blocked. The second side wall 112 is provided with an air outlet 1121 , and an air inlet end of the indoor air outlet duct 4 is connected to the air outlet 1121 .

[0039] The kitchen fresh air and internal circulation purification system provided by the embodiment of the utility model has two main sources of air intake: one is the fresh air outside the kitchen, which flows in through the air inlet end of the outdoor air inlet duct 2 located outdoors, and then flows into the box 11 through the first air inlet 1111; the other is the air inside the kitchen, which flows in through the air inlet end of the indoor air inlet duct 3 located inside the kitchen, and then flows into the box 11 through the second air inlet 1112. The air outlet end of the indoor air outlet duct 1121 is located inside the kitchen, and is used to input the fresh air or circulating air in the box 11 into the kitchen. The baffle 13 is used to control the opening and closing of the first air inlet 1111 and the second air inlet 1112. Therefore, the kitchen fresh air and internal circulation purification system provided by the embodiment of the utility model has two functional modes: one is fresh air replenishment and pressure replenishment, at this time, the baffle 13 is located in the second position, the second air inlet 1112 is completely blocked, and the outdoor fresh air enters the box 11 through the outdoor air inlet duct 2 and the first air inlet 1111, and flows into the kitchen through the air outlet 1121 and the indoor air outlet duct 4, replenishing the negative pressure caused by turning on the range hood, and at the same time, the temperature in the kitchen can be lowered by the outdoor fresh air; the second is indoor air internal circulation purification, at this time, the baffle 13 is located in the first position, the first air inlet 1111 is completely blocked, the air in the kitchen enters the box through the indoor air inlet duct 3 and the second air inlet 1112, and flows into the kitchen again through the air outlet 1121 and the indoor air outlet duct 4, circulating back and forth to form an internal circulation.

[0040] In one embodiment of the utility model, there is a third position between the first position and the second position. When the baffle 13 is located at the third position, the first air inlet 1111 and the second air inlet 1112 are partially blocked or not blocked. At this time, the kitchen fresh air and internal circulation purification system provided by this embodiment simultaneously runs the above two functional modes: fresh air replenishment and pressure replenishment and indoor air internal circulation purification.

[0041] like Figure 3 , Figure 4 , Figure 6-Figure 8 As shown, in order to achieve the sliding of the baffle 13, in one embodiment of the utility model, the first air inlet 1111 and the second air inlet 1112 are horizontally arranged on the first side wall 111. A horizontal slide rail 14 is respectively provided at the top and bottom of the inner side of the first side wall 111, and the baffle 13 is slidably arranged between the two slide rails 14, and a horizontal rack 131 is provided on the inner side of the baffle 13. A driving motor 15 is provided in the middle of the inner side of the first side wall 111, and a driving gear 16 meshing with the rack 131 is provided on the output shaft of the driving motor 15. When the output shaft of the driving motor 15 rotates, the driving gear 16 is driven to rotate, and then the rack 131 meshing with the driving gear 16 is driven to move horizontally, so that the baffle 13 slides horizontally, and the first air inlet 1111 and the second air inlet 1112 are controlled to be opened and closed.

[0042] like Figure 7 As shown, in order to facilitate the installation of the baffle 13, a slider 141 is provided on the slide rail 14, and the baffle 13 is detachably connected to the slider 141, for example, fixedly connected by bolts or screws.

[0043] like Figure 3 , Figure 4 , Figure 6-Figure 8 As shown, further, a horizontal crossbeam 17 is respectively provided at the top and the bottom of the inner side of the first side wall 111, and the slide rail 14 is provided on the surface opposite to the crossbeam 17. A longitudinal beam 18 is provided between the inner sides of the two crossbeams 17, and the drive motor 15 is provided on the outer side of the longitudinal beam 18. The two crossbeams 17 provide a fixing surface for the installation of the slide rail 14, and the longitudinal beam 18 provided between the two not only provides a mounting point for the drive motor 15, but also enhances the structural stability at the crossbeam 17.

[0044] like Fig. 9 , Fig.10 As shown, the first air inlet 1111 and the second air inlet 1112 can be directly opened on the first side wall 111, or a connecting sleeve can be arranged outside the first air inlet 1111 and the second air inlet 1112 to facilitate the connection of the outdoor air inlet duct 2 and the indoor air inlet duct 3. Similarly, the air outlet 1121 can be directly opened on the second side wall 112, or a connecting sleeve can be arranged outside the air outlet 1121 to facilitate the connection of the indoor air outlet duct 4.

[0045] like Figure 3As shown, in order to filter the air entering the kitchen, a filter device 19 is provided between the air inlet end of the fan 12 and the first side wall 111. The filter device 19 is preferably a high-efficiency particulate arrestance filter (HEPA filter).

[0046] like Figure 1 , Fig.11 As shown, in one embodiment of the present invention, the fan device 1, the outdoor air inlet duct 2, the indoor air inlet duct 3 and the indoor air outlet duct 4 are all located between the kitchen ceiling 5 and the roof 6. The air inlet end of the outdoor air inlet duct 3 is located outside the kitchen, the air inlet end of the indoor air inlet duct 4 is located at the end of the kitchen ceiling 5 away from the range hood, and the air outlet end of the indoor air outlet duct 4 is located on the ceiling 5 above the range hood. Figure 2 As shown, in order to install the box body 11, a hanging rod 7 is provided on the top of the box body 11 and is fixedly connected to the kitchen roof 6.

[0047] In one embodiment of the utility model, the kitchen fresh air and internal circulation purification system also includes a sensor (not shown in the figure), which is arranged in the kitchen (for example, between the kitchen floor and the ceiling 5) to measure the air pressure and PM2.5 parameters in the kitchen. The sensor and the drive motor 15 are connected to the control system, and the drive motor 15 is controlled by the results of the air pressure and PM2.5 parameters, thereby controlling the position of the baffle 13 and the opening and closing or opening ratio of the first air inlet 1111 and the second air inlet 1112. According to different situations, there are the following three operating conditions:

[0048] 1. When the sensor detects that the air pressure in the kitchen is less than P 阈值 And PM2.5 is less than PM2.5 阈值 At this time, it is only necessary to enable the fresh air replenishment and pressure replenishment function, and the driving motor 15 drives the baffle 13 to move and block the second air inlet 1112, and the first air inlet 1111 is fully opened. At this time, the fan 12 of the fan device 1 is started, and the outdoor fresh air is sucked in from the air inlet end of the outdoor air inlet duct 2, and flows into the box 11 of the fan device 1 from the first air inlet 1111, and after being filtered by the hepa filter, it flows into the kitchen through the air outlet end of the indoor air outlet duct 4. The air inlet end of the outdoor air inlet duct 2 can be set in the living room. Due to the temperature difference between the living room and the kitchen, the fresh air replenishment gas blowing towards the human body can also play a cooling role, which can effectively improve the cooking experience.

[0049] 2. When the sensor detects that the air pressure in the kitchen is greater than P 阈值 And PM2.5 is greater than PM 2.5When the threshold is reached, only the internal circulation function needs to be enabled, the driving motor 15 drives the baffle 13 to move and block the first air inlet 1111, and the second air inlet 1112 is fully opened. At this time, the fan 12 of the fan device 1 is started, and the indoor air is sucked in through the air inlet end of the indoor air inlet duct 3 (the air inlet end of the indoor air inlet duct 3 is also provided with a microporous mesh, a porous metal filter or other primary and secondary efficiency filters, which can play a pre-filtering effect), and flows into the box 11 of the fan device 1 from the second air inlet 1112, and after being filtered by the hepa filter, it flows into the kitchen through the air outlet end of the indoor air outlet duct 4. The air inlet end of the indoor air inlet duct 3 and the air outlet end of the indoor air outlet duct 4 are both arranged on the kitchen ceiling 5, so that the air in the kitchen can be circulated, filtered and purified, thereby effectively improving the air quality in the kitchen in the cooking state and the non-cooking state.

[0050] 3. When the sensor detects that the air pressure in the kitchen is less than P 阈值 And PM2.5 is greater than PM2.5 阈值 When the air needs to be replenished and the indoor air needs to be purified at the same time, the driving motor 15 drives the baffle 13 to move to the third position (between the first position and the second position). At this time, the first air inlet 1111 and the second air inlet 1112 are both opened, or partially blocked and partially opened. At this time, after the fan 12 of the fan device 1 is started, on the one hand, air is sucked in through the air inlet end of the indoor air inlet duct 3, flows into the box 11 of the fan device 1 from the second air inlet 1112, and flows into the kitchen through the air outlet end of the indoor air outlet duct 4 after being filtered by the HEPA filter; on the other hand, air is sucked in from the air inlet end of the outdoor air inlet duct 2, flows into the box 11 of the fan device 1 from the first air inlet 1111, and flows into the kitchen through the air outlet end of the indoor air outlet duct 4 after being filtered by the HEPA filter.

[0051] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A kitchen fresh air and internal circulation purification system, characterized in that: It comprises a fan device (1), and an outdoor air inlet duct (2), an indoor air inlet duct (3), and an indoor air outlet duct (4) connected to the fan device (1); The fan device (1) comprises a housing (11) and a fan (12) arranged in the housing (11); the housing (11) has a first side wall (111) and a second side wall (112) respectively corresponding to an air inlet end and an air outlet end of the fan (12); the first side wall (111) is provided with a first air inlet (1111), a second air inlet (1112) and a baffle (13); the baffle (13) is slidably arranged on the inner side of the first side wall (111) and can slide between a first position and a second position; when the baffle (13) is located at the first position, the first air inlet (1111) is completely blocked; when the baffle (13) is located at the second position, the second air inlet (1112) is completely blocked; the second side wall (112) is provided with an air outlet (1121); The air outlet ends of the outdoor air inlet duct (2) and the indoor air inlet duct (3) are respectively connected to the first air inlet (1111) and the second air inlet (1112), and the air inlet end of the indoor air outlet duct (4) is connected to the air outlet (1121).

2. The kitchen fresh air and internal circulation purification system according to claim 1 is characterized in that: There is a third position between the first position and the second position, and when the baffle (13) is located at the third position, the first air inlet (1111) and the second air inlet (1112) are partially blocked or not blocked.

3. The kitchen fresh air and internal circulation purification system according to claim 1 or 2, characterized in that: The first air inlet (1111) and the second air inlet (1112) are horizontally arranged on the first side wall (111); a horizontal slide rail (14) is respectively provided at the top and the bottom of the inner side of the first side wall (111), and the baffle (13) is slidably arranged between the two slide rails (14).

4. The kitchen fresh air and internal circulation purification system according to claim 3 is characterized in that: A sliding block (141) is provided on the sliding rail (14), and the baffle (13) is detachably connected to the sliding block (141).

5. The kitchen fresh air and internal circulation purification system according to claim 3 is characterized in that: A horizontal rack (131) is provided on the inner side of the baffle (13); a drive motor (15) is provided in the middle of the inner side of the first side wall (111); and a drive gear (16) meshing with the rack (131) is provided on the output shaft of the drive motor (15).

6. The kitchen fresh air and internal circulation purification system according to claim 5 is characterized in that: A horizontal crossbeam (17) is provided at the top and bottom of the inner side of the first side wall (111), and the slide rail (14) is provided on the surface opposite to the crossbeam (17); a longitudinal beam (18) is provided between the inner sides of the two crossbeams (17), and the drive motor (15) is provided on the outer side of the longitudinal beam (18).

7. The kitchen fresh air and internal circulation purification system according to claim 3 is characterized in that: A filtering device (19) is provided between the air inlet end of the fan (12) and the first side wall (111).

8. The kitchen fresh air and internal circulation purification system according to claim 7 is characterized in that: The filtering device (19) is a high-efficiency particle filter.

9. The kitchen fresh air and internal circulation purification system according to claim 5, characterized in that: It also includes a sensor for measuring air pressure and PM2.5, the sensor being arranged in the kitchen room, and the sensor and the drive motor (15) being connected to a control system.

10. The kitchen fresh air and internal circulation purification system according to claim 1 or 2, characterized in that: The top of the box (11) is provided with a suspension rod (7) which is fixedly connected to the roof (6) of the kitchen; And / or, the fan device (1), the outdoor air inlet duct (2), the indoor air inlet duct (3) and the indoor air outlet duct (4) are all located between the kitchen ceiling (5) and the roof (6); the air inlet end of the outdoor air inlet duct (2) is located outside the kitchen, the air inlet end of the indoor air inlet duct (3) is located at the end of the kitchen ceiling (5) away from the range hood, and the air outlet end of the indoor air outlet duct (4) is located on the ceiling (5) above the range hood.

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