Integrated kitchen exhaust system

Abstract

The utility model discloses an integrated kitchen exhaust system which comprises a range hood and a first cabinet, and the range hood comprises a fan frame and a fan system arranged in the fan frame; the first cabinet comprises a first ventilation hole used for exhausting air in the first cabinet and a second ventilation hole allowing air in a kitchen to enter the first cabinet. The integrated kitchen exhaust system further comprises an air inlet pipeline, the first ventilation hole of the first cabinet is in fluid communication with the fan system, and a first electric valve capable of opening and closing the air inlet pipeline is arranged in the air inlet pipeline; the air inlet pipeline is a three-way pipeline with two inlets and one outlet, the first electric valve is arranged at one inlet of the air inlet pipeline, one end of the smoke exhaust pipeline is connected to the other inlet of the air inlet pipeline, and the other end of the smoke exhaust pipeline is connected to the smoke collecting device; and a second electric valve for opening or closing a passage between the smoke exhaust pipeline and the air inlet pipeline is arranged at the joint of the smoke exhaust pipeline and the air inlet pipeline.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kitchen appliance, especially an integrated kitchen exhaust system. BACKGROUND

[0002] Chinese kitchen is usually high temperature and high humidity, and the articles placed in the cabinet are prone to mildew, odor and bacteria breeding if the cabinet door is not opened for ventilation and drying for a long time, which seriously affects the user's experience and physical and mental health. It is usually necessary to open the cabinet door or take out the articles inside regularly for ventilation and drying. Therefore, there is a range hood that can ventilate the cabinet, such as the range hood disclosed in the Chinese patent with the application number 202321027039.3 of the applicant, but it only has the single cabinet ventilation function mentioned above.

[0003] The range hood on the market is fixed in position and inconvenient to move, so it has a single function, mainly focusing on the smoke exhaust demand of the main cooking position. For the steam and oil fume generated by electric rice cookers and table type steam ovens, the exhaust effect is not good due to the long distance. And for the oil fume generated by home hot pot and barbecue, it is also not well exhausted due to the long distance from the range hood. Although there are also table top range hoods for hot pot and barbecue on the market, such as the one disclosed in the Chinese patent with the application number 202310642668.5. But this table top range hood has small air volume and low air pressure, and the cooking fume is simply filtered by multiple layers of filter screens before being discharged into the room. Due to the limitation of filtering technology, harmful components and odors in the fume cannot be well removed, the indoor air cannot be well purified, and the filter screens need to be replaced regularly, which is relatively high in use cost and poor in use experience.

[0004] Therefore, further improvement is needed. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem of the prior art, provides an integrated kitchen exhaust system, makes full use of the fan of the range hood as power, expands the use scene of the range hood, and comprehensively solves the problems of ventilation, multi-point smoke suction and dehumidification in the cooking environment.

[0006] The utility model solves the technical problem by adopting the following technical scheme: an integrated kitchen exhaust system, comprising a range hood and a first cabinet arranged adjacent to the range hood, the range hood comprising a fan frame and a fan system arranged in the fan frame; characterized in that:

[0007] The first cabinet comprises a first ventilation hole for discharging air in the first cabinet and a second ventilation hole for allowing indoor air in the kitchen to enter the first cabinet;

[0008] The integrated kitchen exhaust system further comprises:

[0009] an air inlet pipe fluidly connecting the first air vent of the first cabinet and the fan system, the air inlet pipe being provided with a first electric valve capable of opening and closing the air inlet pipe; and

[0010] an air outlet pipe and a smoke collecting device, the air inlet pipe being a three-way pipe with two inlets and one outlet, the first electric valve being arranged at one of the inlets of the air inlet pipe, one end of the air outlet pipe being connected to the other inlet of the air inlet pipe, the other end of the air outlet pipe being connected to the smoke collecting device, and a second electric valve being arranged at the connection between the air outlet pipe and the air inlet pipe to open or close the passage between the air outlet pipe and the air inlet pipe.

[0011] By arranging the air inlet pipe, the fan system can be fluidly connected to other cabinets that are not used to mount the fan frame of the extractor hood, so that the fan system of the extractor hood can be used to ventilate and dehumidify the cabinets, ensuring that the items in the cabinets are in a dry environment conducive to preservation; by arranging the air outlet pipe and the smoke collecting device, and fluidly connecting the air outlet pipe and the fan system, the fan system of the extractor hood can be used to provide power for the oil fume extraction of other cooking areas that are not cooking areas, such as the steam or oil fume generated by the operation of other small household appliances, such as electric rice cookers, table-top steam ovens, household hot pots, barbecues, etc., further expanding the use scenarios of the extractor hood, improving the user experience, and avoiding the problems of small air volume, low air pressure, and incomplete filtration of the existing table-top extractor hood.

[0012] Further, to facilitate the smoke collection of the extractor hood and the mode switching when the entire system is in a non-extraction cooking state, the extractor hood further comprises a smoke collecting hood provided with an openable and closable smoke inlet.

[0013] To further expand the position of the smoke collecting device, the air outlet pipe is a telescopic smoke pipe.

[0014] To facilitate automatic control of the first electric valve, a first sensor for detecting humidity or odor is arranged in the first cabinet.

[0015] To facilitate automatic control of the second electric valve, a second sensor for detecting oil fume concentration or air quality is arranged on the smoke collecting device.

[0016] To facilitate the matching of the fan speed of the fan system to the state of the cabinet or non-cooking position, a wind speed sensor is arranged in the air inlet pipe.

[0017] Further, the integrated kitchen exhaust system further comprises a drying cabinet, the drying cabinet comprising a third air vent fluidly connected to the first cabinet and a fourth air vent fluidly connected to the air inlet pipe.

[0018] In order to further improve the drying effect, the outer side of the exhaust pipe wall is provided with a heat recovery device for heat exchange with the exhaust pipe and conducting the absorbed heat to the drying cabinet. The heat in the cooking fume can be recovered for drying the kitchen towels, chopping boards, thawed food and the like, so as to realize the drying or heating function.

[0019] Further, in order to facilitate automatic control of the first electric valve, a third sensor for detecting temperature and humidity is arranged in the drying cabinet.

[0020] Compared with the prior art, the advantages of the utility model lie in that: through the arrangement of the air inlet pipe, the fan system and other cabinets except the fan frame for installing the extractor hood are in fluid connection, so that the fan system of the extractor hood can be used for ventilation and dehumidification of the cabinet, and the items in the cabinet are kept in a dry environment for storage; through the arrangement of the exhaust pipe and the smoke collecting device, and the fluid connection between the exhaust pipe and the fan system, the fan system of the extractor hood can be used to provide power for the oil fume suction and exhaust of other cooking areas except the cooking area, so as to collect the fume generated by other small household appliances during work, such as the steam or oil fume generated by the electric rice cooker, the table type steaming oven, the household hot pot and the barbecue, further expand the use scene of the extractor hood, improve the user experience, and avoid the problems of small air volume, low air pressure and incomplete filtration of the existing desktop extractor hood; through the arrangement of the drying cabinet and the heat recovery device, the heat in the cooking fume can be recovered for drying the kitchen towels, chopping boards, thawed food and the like, so as to realize the drying or heating function. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a use state front view of the integrated kitchen exhaust system of the utility model embodiment (exhaust pipe exhaust and drying cabinet drying mode);

[0022] Figure 2 It is a use state front view of the integrated kitchen exhaust system of the utility model embodiment (cabinet ventilation mode);

[0023] Figure 3 It is Figure 2 a sectional side view. DETAILED DESCRIPTION

[0024] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions.

[0025] In the description of the utility model, need understanding is, the term "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "internal", "external", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and so on the orientation or positional relationship indicated for the orientation or positional relationship shown in the drawing, just for the convenience of describing the utility model and simplifying the description, and not indicate or imply the device or element indicated must have a particular orientation, with a particular orientation configuration and operation, because the embodiment disclosed by the utility model can be set up according to different directions, so these direction indicating terms are just as illustration and should not be regarded as limitation, such as "upper", "lower" are not necessarily limited to the direction opposite or consistent with the direction of gravity direction.This further, the feature of "first", "second" can be explicitly or implicitly include one or more features.

[0026] Referring to Figures 1-3 An integrated kitchen exhaust system includes a range hood that performs conventional range hood functions. The range hood includes a fan housing 1 and a fan system 2 disposed within the fan housing 1. The fan housing 1 can simultaneously serve as an air inlet box (i.e., a box with an air inlet opening, such as a side suction range hood) or can be a separate box. In the present embodiment, there is also a separate fume hood 4 with an air inlet opening 41 and a damper 42 that opens and closes the air inlet opening 41.

[0027] The integrated kitchen exhaust system also includes an air inlet duct 31, a first electric valve 32 disposed within the air inlet duct 31, and a safety screen 33 disposed at the inlet of the air inlet duct 31. The outlet of the air inlet duct 31 is connected to the upstream of the fan system 2 of the range hood, such as being connected to the fan housing 1 and being in fluid communication with the fan housing 1, and thus being in fluid communication with the fan system 2. The first electric valve 32 can open or close the air inlet duct 31. The first electric valve 32 is in a closed state by default.

[0028] The kitchen is provided with at least two cabinets arranged side by side, which are respectively a first cabinet 101 and a second cabinet 102 for mounting the fan frame 1. A first ventilation hole 1011 is formed in the side wall of the first cabinet 101 adjacent to the second cabinet 102, and a second ventilation hole 1012 is formed in the bottom or door panel of the first cabinet 101. The first ventilation hole 1011 and the second ventilation hole 1012 can be independently controlled to open or close. The second ventilation hole 1012 serves as an air inlet for indoor air entering the first cabinet 101, and the first ventilation hole 1011 serves as an air outlet for air in the first cabinet 101. The first ventilation hole 1011 is in fluid communication with the air inlet duct 31. The first cabinet 101 can be one cabinet arranged on one side of the second cabinet 102, or two cabinets arranged on both sides of the second cabinet 102.

[0029] A first sensor 1013 is arranged in the first cabinet 101 to detect the air condition in the first cabinet 101, such as a humidity sensor or an odor sensor.

[0030] The integrated kitchen exhaust system mainly functions as an oil fume extractor and has the highest priority. At this time, the first electric valve 32 in the air inlet duct 31 closes the passage between the air inlet duct 31 and the first cabinet 101. In the non-cooking smoke exhaust condition, when a higher humidity or odor concentration in the first cabinet 101 is detected, the cabinet ventilation (drying) function is started. At this time, the first electric valve 32 in the air inlet duct 31 is opened, the smoke suction port 41 of the extractor hood is closed, and the fan system 2 operates to generate negative pressure (the speed of the fan system 2 can be lower than that in the cooking state, which can ensure the ventilation effect and is more energy-saving and has lower operating noise). The humid gas or odor gas with excessive concentration in the first cabinet 101 is sucked into the fan frame 1 through the air inlet duct 31 and discharged to the public flue (the discharge path is the same as that of conventional oil fume), ensuring the dry environment in the first cabinet 101 and eliminating odor.

[0031] If the second cabinet 102 is not provided, the air inlet duct 31 can be connected to the side wall of the first cabinet 101 to form an air flow passage.

[0032] For the scene of low frequency and temporary exhaust, the integrated kitchen exhaust system can further include an exhaust duct 51 and a smoke collecting device 52. The air inlet duct 31 described above is a three-way duct with two inlets and one outlet. One end of the exhaust duct 51 is connected to one of the inlets of the air inlet duct 31, and the first electric valve 32 is arranged at the other inlet of the air inlet duct 31. The other end of the exhaust duct 51 is connected to the smoke collecting device 52 described above, which can be located above the worktop in other areas of the kitchen other than the cooking area, for collecting smoke generated by other small cooking appliances in operation, such as steam or oil fume generated by electric rice cookers, table-top steam ovens, household hot pots, barbecues, etc. This further expands the use scenarios of the range hood and improves the user experience. Optionally, the exhaust duct 51 can be a telescopic duct, so that the smoke collecting device 52 can be moved to the dining table to meet the needs of users in the scenarios of hot pot and barbecue.

[0033] The smoke collecting device 52 is provided with a second sensor 53 for detecting the concentration of oil fume or air quality. Thus, the air volume of the exhaust duct 51 can be adjusted according to the concentration of oil fume or air quality, so as to more efficiently exhaust the oil fume.

[0034] The connection between the exhaust duct 51 and the air inlet duct 31 is provided with a second electric valve 54 for opening or closing the passage between the exhaust duct 51 and the air inlet duct 31. The second electric valve 54 is in a closed state by default, and is opened for exhaust when the exhaust mode of the exhaust duct 51 needs to be started.

[0035] To achieve efficient and low-noise exhaust, the air inlet duct 31 is provided with a wind speed sensor 34 for detecting the actual exhaust air speed, and automatically matches the appropriate air speed according to the concentration detected by the oil fume or air quality sensor.

[0036] In addition, the kitchen is a high-temperature and high-humidity environment, and items such as cloths and cutting boards are prone to mold and bacterial growth. Users usually use the method of air drying to handle them. Natural air drying is difficult to ensure dryness, and in most cases, especially in humid weather, bacteria and mold will still grow, affecting the health and user experience of users.

[0037] Therefore, the integrated kitchen exhaust system further comprises a drying cabinet 103, which is a separate cabinet body and can be arranged between the first cabinet 101 and the second cabinet 102 or at other positions. The drying cabinet 103 is provided with a third vent hole 1031 and a fourth vent hole 1032, wherein the third vent hole 1031 can be in fluid communication with the first cabinet 101, and the fourth vent hole 1032 can be in fluid communication with the air inlet duct 31. The first vent hole 1011, the second vent hole 1012, the third vent hole 1031 and the fourth vent hole 1032 can be independently opened or closed, and are in a closed state by default. The drying cabinet 103 is used to place items such as dishcloths and chopping boards, and can also be used to place thawed food and the like.

[0038] A heat recovery device 6 is arranged outside the pipe wall of the exhaust duct 51, which can recover heat in the cooking fumes and be used to dry dishcloths, chopping boards, thawed food and the like in the kitchen, thereby achieving a drying or heating function. The heat recovery device 6 can adopt an existing heat exchange device, such as a material with high thermal conductivity, which is tightly attached to or wrapped around the exhaust duct 51 to absorb heat in the fumes and conduct the heat to the drying cabinet 103. In order to ensure the drying effect, an electric auxiliary heating device (not shown) can also be arranged in the drying cabinet 103 to perform auxiliary heating when the drying temperature does not meet the requirements.

[0039] A third sensor 1033 is arranged in the drying cabinet 103 to detect the temperature and humidity in the drying cabinet 103. When the humidity in the drying cabinet 103 reaches a set value and needs to be exhausted, the third vent hole 1031 and the fourth vent hole 1032 are automatically opened for ventilation, and the two vent holes of the first cabinet 101 are closed. At this time, the first electric valve 32 is opened, and the fan system 2 of the extractor hood is operated to generate negative pressure, so that the high-humidity gas in the drying cabinet 103 is exhausted outdoors through the extractor hood. If drying is required, the second electric valve 54 is also opened, as shown in Figure 1 , and the arrow indicates the direction of gas flow.

[0040] When only the first cabinet 101 needs to be ventilated and dehumidified, the two vent holes of the first cabinet 101 are opened, the two vent holes of the drying cabinet 103 are closed, the second electric valve 54 is closed, and the first electric valve 32 is opened. The fan system 2 of the extractor hood is used for ventilation, as shown in Figure 2 and Figure 3 , and the arrow indicates the direction of gas flow.

[0041] The "fluid communication" in the utility model refers to the spatial position relation between two components or parts (hereinafter collectively referred to as a first part and a second part), that is, fluid (gas, liquid or mixture of both) can flow or / and be transported from the first part to the second part along the flow path, which can be directly connected between the first part and the second part, or indirectly connected between the first part and the second part through at least one third party, which can be a fluid passage such as a pipeline, a channel, a conduit, a flow guide, a hole, a groove, etc., or a chamber allowing fluid to flow or a combination thereof.

Claims

1. An integrated kitchen exhaust system, comprising an extractor hood and a first cabinet (101) arranged adjacent to the extractor hood, the extractor hood comprising a fan frame (1) and a fan system (2) arranged in the fan frame (1); characterized in that: the first cabinet (101) comprises a first vent hole (1011) for discharging air in the first cabinet (101) and a second vent hole (1012) for allowing kitchen indoor air to enter the first cabinet (101); the integrated kitchen exhaust system further comprises: an air inlet duct (31) fluidly connecting the first vent hole (1011) of the first cabinet (101) and the fan system (2), the air inlet duct (31) being provided with a first electric valve (32) capable of opening and closing the air inlet duct (31); and an exhaust duct (51) and a smoke collecting device (52), the air inlet duct (31) being a three-way duct with two inlets and one outlet, the first electric valve (32) being arranged at one of the inlets of the air inlet duct (31), one end of the exhaust duct (51) being connected to the other inlet of the air inlet duct (31), the other end of the exhaust duct (51) being connected to the smoke collecting device (52), and a second electric valve (54) being arranged at the connection between the exhaust duct (51) and the air inlet duct (31) for opening or closing the passage between the exhaust duct (51) and the air inlet duct (31).

2. The integrated kitchen exhaust system of claim 1, wherein: The extractor hood further comprises a smoke collecting hood (4) provided with an openable and closable smoke suction port (41).

3. The integrated kitchen exhaust system of claim 1, wherein: The exhaust duct (51) is a telescopic duct.

4. The integrated kitchen exhaust system of claim 1, wherein: The first cabinet (101) is provided with a first sensor (1013) for detecting humidity or odor.

5. The integrated kitchen exhaust system of claim 1, wherein: The smoke collecting device (52) is provided with a second sensor (53) for detecting oil fume concentration or air quality.

6. The integrated kitchen exhaust system according to any one of claims 1-5, wherein: The air inlet duct (31) is provided with a wind speed sensor (34).

7. The integrated kitchen exhaust system according to any one of claims 1-5, wherein: The integrated kitchen exhaust system further comprises a drying cabinet (103), the drying cabinet (103) comprising a third vent hole (1031) fluidly connected to the first cabinet (101) and a fourth vent hole (1032) fluidly connected to the air inlet duct (31).

8. The integrated kitchen exhaust system of claim 7, wherein: The exhaust duct (51) is provided with a heat recovery device (6) on the outer side of the duct wall for exchanging heat with the exhaust duct (51) and conducting the absorbed heat to the drying cabinet (103).

9. The integrated kitchen exhaust system of claim 8, wherein: The drying cabinet (103) is provided with a third sensor (1033) for detecting temperature and humidity.

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