Fire extinguishing device and range hood comprising same

Abstract

The utility model provides a fire extinguishing device and a range hood comprising the same. The fire extinguishing device comprises a ventilation assembly, a jet flow assembly and a storage assembly in which a fire extinguishing medium is stored, wherein the storage assembly can communicate with the jet flow assembly so as to provide a fire extinguishing medium for the jet flow assembly; an air inlet of the ventilation assembly is used for communicating with a fan system of the extractor hood, and an air outlet of the ventilation assembly faces the jet flow assembly and provides airflow for the jet flow assembly; wherein the airflow is accelerated in the jet flow assembly, so that a fire extinguishing medium pre-stored in the jet flow assembly is jetted into a cavity of the range hood; the fire extinguishing device is simple in structure and small in occupied space; the air inlet of the ventilation assembly is used for communicating with the fan system of the extractor hood, that is, the fire extinguishing device does not need to add a power source, but uses the fan system of the extractor hood, so that the structure of the fire extinguishing device is simplified, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to kitchen electrical appliances technical field, especially a kind of fire extinguishing device and contain its range hood. BACKGROUND

[0002] Range hood as a kind of kitchen electrical appliances, can quickly discharge the oil fume generated in the kitchen cooking process, realize the purpose of purifying kitchen environment, range hood is installed above kitchen stove, can quickly suck the harmful oil fume generated in the cooking process, and discharge outdoor, with the continuous improvement of people's living standards, range hood has become the indispensable household electrical appliances in kitchen;Chinese cooking is easy to produce oil fume, and the current way to remove oil fume is to use range hood, but when frying, frying, stir-frying and other operations are carried out, the oil fume temperature is too high, which can be ignited by open fire under the pot and rise into the range hood cavity, especially when the cook performs "turning pot" operation in order to make the food material heated or seasoning uniform, it is easy to cause the rising open fire, and the open fire rising into the range hood cavity can ignite the oil stains accumulated in the cavity, causing the range hood cavity to catch fire, which can damage the parts of range hood;At present, the way of spraying water, dry powder or carbon dioxide is often used to extinguish the fire in the range hood.

[0003] The patent application with publication number CN111649363 A discloses a cooling and fire extinguishing range hood, wherein the scheme is to spray the cooling water into water mist by high-pressure gas of high-pressure gas tank, so as to extinguish the fire of the range hood, and the components include high-pressure gas tank, water tank, circulating pump, radiator and other large devices, which not only have complex structure and high cost, but also occupy large space, and the product is not practical enough for many small household kitchens. The patent with authorization publication number CN207569945 U discloses a range hood with fire extinguishing and purifying functions, and the fire extinguishing device thereof is composed of a smoke sensor, an audible and visual alarm device and a dry powder fire extinguisher, which sprays dry powder to extinguish the fire by triggering the audible and visual alarm device, and the dry powder is a fine particle of inorganic salt, which can not only damage the internal components of the range hood, but also pollute the kitchen environment. Whether water or dry powder is used to extinguish the fire, the above methods will increase the subsequent cleaning work of the range hood for the user. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem that the existing fire extinguishing device has complex structure and can damage the range hood, and provides a fire extinguishing device and a range hood comprising the same.

[0005] The utility model solves the above technical problems by the following technical solutions:

[0006] A fire extinguishing device, the fire extinguishing device is used for extinguishing the fire of a range hood, and comprises a ventilation assembly, a jet flow assembly and a storage assembly storing fire extinguishing medium.

[0007] The storage assembly is in communication with the jet assembly to provide the fire extinguishing medium to the jet assembly.

[0008] The air inlet of the ventilation assembly is in communication with the fan system of the range hood, and the air outlet of the ventilation assembly is directed towards the jet assembly and provides airflow to the jet assembly.

[0009] The airflow is accelerated in the jet assembly to cause the pre-existing fire extinguishing medium in the jet assembly to be ejected into the chamber of the range hood.

[0010] In this scheme, the fire extinguishing device includes a ventilation assembly, a jet assembly, and a storage assembly storing fire extinguishing medium. The fire extinguishing device is composed of only a few components, has a simple structure, and occupies a small space. The ventilation assembly facilitates the ejection of the fire extinguishing medium in the jet assembly. The airflow is accelerated in the jet assembly to cause the pre-existing fire extinguishing medium in the jet assembly to be ejected into the chamber of the range hood. The fire extinguishing medium in the above arrangement does not cause damage to the components of the range hood. Secondly, the air inlet of the ventilation assembly is in communication with the fan system of the range hood, that is, the fire extinguishing device does not need to add a power source, but uses the fan system provided by the range hood, simplifying the structure of the fire extinguishing device and reducing the cost.

[0011] Preferably, the fire extinguishing device further comprises a first detection device.

[0012] The first detection device is installed at the air inlet of the chamber of the range hood and is used to detect the temperature and target ignition point in the chamber.

[0013] And / or,

[0014] The fire extinguishing device further comprises a second detection device installed below the chamber for observing whether there is an open flame on the cooking hob.

[0015] In this scheme, the first detection device is used to detect the temperature in the chamber of the range hood and locate the target ignition point, thereby improving the fire extinguishing efficiency of the subsequent fire extinguishing device. In addition, the second detection device is used to timely discover the danger of fire on the cooking hob and provide information for the fire extinguishing device.

[0016] Preferably, the ventilation assembly comprises a first main body and a flow guide pipe. The first main body has an air inlet chamber, and the air inlet of the air inlet chamber is in communication with the fan system.

[0017] The inlet end of the flow guide pipe is in communication with the air inlet chamber, and the outlet end of the flow guide pipe is directed towards the jet assembly.

[0018] In this scheme, the air inlet chamber is used to receive the airflow of the fan system, and the flow guide pipe is used to deliver the airflow to the jet assembly.

[0019] Preferably, the bottom surface of the first body is arc-shaped and is attached to the arc-shaped volute of the fan system.

[0020] The air inlet of the air inlet chamber is arranged on the bottom surface of the first body, and the flow guide pipe is arranged at the non-bottom surface of the first body.

[0021] In this scheme, the arc-shaped bottom surface of the first body is beneficial to improve the matching and attachment of the first body to the arc-shaped volute. Since the first body is relatively close to the arc-shaped volute, such arrangement can improve the utilization rate of the airflow of the fan system and save space. The air inlet of the air inlet chamber is arranged on the bottom surface of the first body, which is beneficial to be close to the fan system, further improving the utilization rate of the airflow of the fan system. In addition, the attached arrangement facilitates the connection reliability of the first body and the arc-shaped volute of the fan system, and is beneficial to save space, but can be explained from the perspective that it is relatively close to the arc-shaped volute, that is, an intermediate derivation process is required.

[0022] Preferably, the jet assembly comprises a mounting frame and a jet, the jet is arranged on the mounting frame, the inlet end of the jet is used to receive the airflow, and the outlet end of the jet is used to spray the fire extinguishing medium towards the chamber.

[0023] In this scheme, the arrangement of the mounting frame facilitates the installation of the jet, which is beneficial to ensure that the jet is not easy to shake and improve the accuracy of the jet spraying the fire extinguishing medium.

[0024] Preferably, the jet assembly is a plurality of;

[0025] And / or, the jet can be steered on the jet frame.

[0026] In this scheme, the plurality of jet assemblies are beneficial to improve the efficiency of the fire extinguishing device, and the jet can be steered on the jet frame to facilitate its fire extinguishing at different positions of the chamber of the range hood.

[0027] Preferably, the jet comprises a flow guide chamber, a mixing chamber and a universal gun head, the flow guide chamber, the mixing chamber and the universal gun head are sequentially communicated.

[0028] The flow guide chamber has a fire extinguishing medium inlet and an airflow inlet, the fire extinguishing medium inlet is communicated with the storage assembly, and the airflow inlet is used to receive the airflow.

[0029] In this scheme, the arrangement of the flow guide chamber is beneficial to introduce the fire extinguishing medium and the airflow into the jet, the mixing chamber is beneficial to mix the fire extinguishing medium and the airflow uniformly, and the universal gun head is beneficial to spray the fire extinguishing medium to different positions of the chamber of the range hood.

[0030] Preferably, the fire extinguishing device further comprises an electromagnetic check valve and a gas control valve, the electromagnetic check valve is arranged on the air outlet cover of the range hood.

[0031] The gas control valve and the electromagnetic check valve are configured to be in a closed state when the first detection device detects that the temperature of the chamber reaches a set value.

[0032] In the scheme, the arrangement of the electromagnetic check valve and the gas control valve is conducive to closing the gas and preventing the spread of high temperature and fire to the rear end of the range hood when the temperature of the chamber of the range hood is too high.

[0033] Preferably, the air flow speed at a position 300mm upstream of the jet head along the flow direction of the air flow reaches 30-60m / s.

[0034] In the scheme, the air flow speed is conducive to improving the fire extinguishing efficiency of the fire extinguishing device.

[0035] The utility model also provides a range hood, including fan system, the range hood still includes the fire extinguishing device as above.

[0036] The utility model discloses a positive progress effect lies in: fire extinguishing device includes ventilation subassembly, jet flow subassembly and the storage component of storing fire extinguishing medium, the fire extinguishing device only consists of several components, simple structure, and the small space occupation of using, the setting of ventilation subassembly is favorable to the fire extinguishing medium in jet flow subassembly is ejected, and the air flow is accelerated in jet flow subassembly, to make the fire extinguishing medium in advance in jet flow subassembly is ejected to the chamber of range hood, and the fire extinguishing medium in the setting will not cause damage to the component of range hood, secondly, the air inlet of ventilation subassembly is used to communicate with the fan system of range hood, that is to say, the fire extinguishing device does not need to add power source, but uses the fan system of range hood, simplifies the structure of fire extinguishing device, also reduces the cost. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 It is structural schematic view of range hood of one embodiment of the utility model.

[0038] Figure 2 It is another structural schematic view of ventilation subassembly of one embodiment of the utility model.

[0039] Figure 3 It is structural schematic view of jet flow subassembly of one embodiment of the utility model.

[0040] Figure 4 It is structural schematic view of mounting bracket of one embodiment of the utility model.

[0041] Figure 5 It is structural schematic view of jet flow device of one embodiment of the utility model.

[0042] Figure 6 It is structural schematic view of another view of jet flow device of one embodiment of the utility model.

[0043] Legend:

[0044] ventilation assembly 1

[0045] air inlet 11

[0046] first body 12

[0047] flow guide pipe 13

[0048] jet assembly 2

[0049] mounting frame 21

[0050] mounting hole 211

[0051] jet 22

[0052] flow guide chamber 221

[0053] air flow inlet 2211

[0054] fire extinguishing medium inlet 2212

[0055] mixing chamber 222

[0056] universal gun head 223

[0057] range hood 100

[0058] chamber 110

[0059] fan system 120 DETAILED DESCRIPTION

[0060] The utility model will be described below with reference to the preferred embodiments and in conjunction with the drawings, but the utility model is not limited in the scope of the embodiments.

[0061] As Figures 1 to 6 shown, the embodiment provides a fire extinguishing device for extinguishing fire of a range hood 100, the fire extinguishing device comprising a ventilation assembly 1, a jet assembly 2 and a storage assembly storing fire extinguishing medium; wherein the storage assembly is in communication with the jet assembly 2 to provide fire extinguishing medium to the jet assembly 2; the air inlet 11 of the ventilation assembly 1 is in communication with the fan system 120 of the range hood 100, and the air outlet of the ventilation assembly 1 faces the jet assembly 2 and provides air flow thereto; wherein the air flow is accelerated in the jet assembly 2 to cause the pre-existing fire extinguishing medium in the jet assembly 2 to be sprayed into the chamber 110 of the range hood 100.

[0062] In the embodiment, the fire extinguishing device comprises the ventilation assembly 1, the jet assembly 2 and the storage assembly storing the fire extinguishing medium, the fire extinguishing device is only composed of several components, has simple structure and occupies small space; the ventilation assembly 1 is beneficial to spray the fire extinguishing medium in the jet assembly 2, the airflow is accelerated in the jet assembly 2, so that the fire extinguishing medium pre-existing in the jet assembly 2 is sprayed into the chamber 110 of the range hood 100, the fire extinguishing medium in the setting does not cause damage to the components of the range hood 100; secondly, the air inlet 11 of the ventilation assembly 1 is used for communicating with the fan system 120 of the range hood 100, that is to say, the fire extinguishing device does not need to add a power source, but uses the fan system 120 of the range hood 100, which simplifies the structure of the fire extinguishing device and reduces the cost.

[0063] It should be noted that, as a preferred setting mode, in the embodiment, each component of the fire extinguishing device is arranged in the interior of the range hood 100, so that the space in the interior of the range hood 100 can be fully utilized, the components are arranged compactly, and the occupied space is reduced; in addition, the fire extinguishing medium used in the embodiment is gaseous or liquid, and is pollution-free, such as nitrogen, and the like; in addition, the jet assembly 2 can be arranged in multiple numbers and in a manner that can spray the fire extinguishing medium in all directions without dead angle.

[0064] In other alternative embodiments, part of the structure (such as the storage assembly) of the fire extinguishing device can be arranged outside the range hood 100 according to actual setting requirements.

[0065] As a preferred setting mode, the fire extinguishing device further comprises a first detection device; wherein the first detection device is installed at the air inlet 11 of the chamber 110 of the range hood 100, and is used for detecting the temperature and the target ignition point in the chamber 110. Further or alternatively, the fire extinguishing device further comprises a second detection device, the second detection device is installed below the chamber 110, and is used for observing whether there is an open flame on the cooking bench.

[0066] In the embodiment, the first detection device is beneficial to detect the temperature in the chamber 110 of the range hood 100 and locate the target ignition point, so as to improve the fire extinguishing efficiency of the subsequent fire extinguishing device; in addition, the second detection device is beneficial to timely find the danger of the cooking bench on fire and provide information for the fire extinguishing device.

[0067] It should be noted that the first detection device detects the temperature of the inner cavity of the range hood 100 and locates the ignition point regardless of whether the second detection device detects the open flame, or the first detection device detects the temperature of the inner cavity of the range hood 100 and locates the ignition point after the second detection device detects the open flame; in addition, as a preferred arrangement, the first detection device and the second detection device are both infrared vision devices.

[0068] As a preferred arrangement, the ventilation assembly 1 includes a first body 12 and a flow guide pipe 13, the first body 12 has an air inlet chamber 110, and the air inlet 11 of the air inlet chamber 110 is used to communicate with the fan system 120; the inlet end of the flow guide pipe 13 communicates with the air inlet chamber 110, and the outlet end of the flow guide pipe 13 is arranged towards the jet assembly 2.

[0069] In this embodiment, the air inlet chamber 110 is used to receive the airflow of the fan system 120, and the arrangement of the flow guide pipe 13 is conducive to delivering the above-mentioned airflow into the jet assembly 2.

[0070] It should be noted that the flow guide pipe 13 can be arranged in multiple, such as Figure 2 As shown in the figure, multiple flow guide pipes 13 can be arranged uniformly side by side on the first body 12.

[0071] Preferably, the bottom surface of the first body 12 is arc-shaped and fits on the arc-shaped volute of the fan system 120; the air inlet 11 of the air inlet chamber 110 is arranged on the bottom surface of the first body 12, and the flow guide pipe 13 is arranged at the non-bottom surface of the first body 12.

[0072] In this embodiment, since the first body 12 is relatively close to the arc-shaped volute, such an arrangement can improve the utilization rate of the airflow of the fan system and save space; the air inlet of the air inlet chamber is arranged on the bottom surface of the first body 12, which is conducive to being close to the fan system 120, further improving the utilization rate of the airflow of the fan system 120; in addition, the fitting arrangement facilitates the connection reliability of the first body 12 and the arc-shaped volute of the fan system 120, and is conducive to saving space.

[0073] It should be noted that the above-mentioned flow guide pipe 13 extends downward between the fan system 120 and the side wall of the range hood 100 to be as close to the jet assembly 2 as possible.

[0074] Preferably, the jet assembly 2 includes a mounting bracket 21 and a jet 22, the jet 22 is arranged on the mounting bracket 21, the inlet end of the jet 22 is used to receive the airflow, and the outlet end of the jet 22 is used to spray out the fire extinguishing medium towards the chamber 110.

[0075] In this embodiment, the arrangement of the mounting bracket 21 is conducive to the jet 22 not being easily shaken, improving the accuracy of the jet 22 spraying the fire extinguishing medium.

[0076] It should be noted that the above-mentioned jet assembly 2 is arranged close to the side wall of the range hood 100, so that the sprayed fire extinguishing medium can cover all positions of the cavity 110 of the range hood as much as possible. The jet device 22 is installed on the mounting bracket 21 through the mounting hole 211.

[0077] As a preferred arrangement, in the present embodiment, the jet assembly 2 is multiple, and the jet device 22 can be steered on the jet bracket. In the present embodiment, the multiple jet assemblies 2 are beneficial to improve the efficiency of the fire extinguishing device, and the jet device 22 can be steered on the jet bracket to facilitate extinguishing fire at different positions of the cavity 110 of the range hood 100.

[0078] It should be noted that the steering angle of the jet device 22 is as large as possible.

[0079] In other alternative embodiments, the multiple jet assemblies 2 can also be arranged to be non-adjustable in position, or at least part of the jet assemblies 2 are non-adjustable in position. Correspondingly, in other alternative embodiments, only one jet assembly 2 can be arranged, and the position of the jet assembly 2 is arranged to be adjustable.

[0080] As a preferred arrangement, in the present embodiment, the jet device 22 includes a flow guide chamber 221, a mixing chamber 222, and a universal gun head 223, which are sequentially communicated; the flow guide chamber 221 has a fire extinguishing medium inlet 2212 and an airflow inlet 2211, the fire extinguishing medium inlet 2212 is communicated with the storage assembly, and the airflow inlet 2211 is used to receive airflow.

[0081] In the present embodiment, the arrangement of the flow guide chamber 221 is beneficial to introduce the fire extinguishing medium and airflow into the jet device 22, the mixing chamber 222 is beneficial to uniformly mix the fire extinguishing medium and airflow, and the universal gun head 223 is beneficial to spray the fire extinguishing medium to different positions of the cavity 110 of the range hood 100.

[0082] It should be noted that after the fire extinguishing medium is ejected, the air inlet 11 of the ventilation assembly 1 is closed, at this time, there is no airflow in the flow guide pipe 13, the fire extinguishing medium is filled into the flow guide chamber 221 again from the storage assembly, and then the air inlet 11 of the ventilation assembly 1 is opened again. In addition, it should be noted that the above-mentioned operation can be repeated multiple times according to actual fire extinguishing requirements until the fire is successfully extinguished.

[0083] Preferably, the fire extinguishing device further comprises an electromagnetic check valve and a gas control valve, the electromagnetic check valve is arranged on the air outlet cover of the range hood 100; wherein the gas control valve and the electromagnetic check valve are configured to be in a closed state when the first detection device detects that the temperature of the cavity 110 reaches a set value.

[0084] In the embodiment, the electromagnetic check valve and the gas control valve are arranged to close the gas and prevent the high temperature and fire from spreading to the rear end of the range hood 100 when the temperature in the chamber 110 of the range hood 100 is too high.

[0085] It should be noted that the electromagnetic check valve and the gas control valve are closed simultaneously.

[0086] Preferably, the air flow speed at a position 300mm upstream of the universal gun head 223 along the flow direction of the air flow reaches 30-60m / s.

[0087] In the embodiment, the air flow speed is advantageous to improve the fire extinguishing efficiency of the fire extinguishing device.

[0088] The utility model also provides a range hood 100, including fan system 120, range hood 100 still include above -mentioned fire extinguishing device.

[0089] In summary, in the fire extinguishing device provided by the embodiment: the fire extinguishing device includes a ventilation assembly 1, a jet assembly 2 and a storage assembly storing fire extinguishing medium, the fire extinguishing device is only composed of several components, and has simple structure and small space occupation; the ventilation assembly 1 is arranged to facilitate the ejection of the fire extinguishing medium in the jet assembly 2, the air flow is accelerated in the jet assembly 2 to make the pre-existing fire extinguishing medium in the jet assembly 2 be ejected into the chamber 110 of the range hood 100, and the fire extinguishing medium in the arrangement will not cause damage to the components of the range hood 100; secondly, the air inlet 11 of the ventilation assembly 1 is used to communicate with the fan system 120 of the range hood 100, that is to say, the fire extinguishing device does not need to add a power source, but uses the fan system 120 of the range hood 100, which simplifies the structure of the fire extinguishing device and reduces the cost. In the description of the utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are the directions of the device or element in normal use, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element must have a particular direction at any time, be constructed and operated in a particular direction, and therefore cannot be understood as a limitation on the utility model in this respect.

[0090] Although the specific embodiments of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the utility model, and these changes and modifications all fall within the protection scope of the utility model.

Claims

1. A fire extinguishing apparatus for extinguishing a fire of a range hood, characterized by comprising: The fire extinguishing device comprises a ventilation assembly, a jet assembly and a storage assembly storing fire extinguishing medium; The storage assembly is in communication with the jet assembly to provide fire extinguishing medium to the jet assembly; The air inlet of the ventilation assembly is in communication with the fan system of the range hood, and the air outlet of the ventilation assembly is directed towards the jet assembly and provides air flow to the jet assembly; The air flow is accelerated in the jet assembly to cause the pre-existing fire extinguishing medium in the jet assembly to be sprayed into the chamber of the range hood.

2. The fire extinguishing device of claim 1, wherein The fire extinguishing device further comprises a first detection device; The first detection device is installed at the air inlet of the chamber of the range hood to detect the temperature and target ignition point in the chamber; And / or, The fire extinguishing device further comprises a second detection device installed below the chamber to observe whether there is an open flame on the cooking hob.

3. The fire extinguishing device of claim 1, wherein The ventilation assembly comprises a first body and a flow guide pipe, the first body has an air inlet chamber, and the air inlet of the air inlet chamber is in communication with the fan system; The inlet end of the flow guide pipe is in communication with the air inlet chamber, and the outlet end of the flow guide pipe is directed towards the jet assembly.

4. The fire extinguishing apparatus of claim 3, wherein The bottom surface of the first body is arc-shaped and fits on the arc-shaped volute of the fan system; The air inlet of the air inlet chamber is provided on the bottom surface of the first body, and the flow guide pipe is provided at the non-bottom surface of the first body.

5. The fire extinguishing device of claim 1, wherein The jet assembly comprises a mounting rack and a jet device, the jet device is provided on the mounting rack, the inlet end of the jet device is used to receive the air flow, and the outlet end of the jet device is used to spray fire extinguishing medium towards the chamber.

6. The fire extinguishing device of claim 5, wherein The jet assembly is multiple; And / or, the jet device can be steered on the jet rack.

7. The fire extinguishing apparatus of claim 6, wherein The jet device comprises a flow guide chamber, a mixing chamber and a universal gun head, which are in communication in sequence; The flow guide chamber has a fire extinguishing medium inlet and an air flow inlet, the fire extinguishing medium inlet is in communication with the storage assembly, and the air flow inlet is used to receive the air flow.

8. The fire extinguishing device of claim 2, wherein The fire extinguishing device further comprises an electromagnetic check valve and a gas control valve, the electromagnetic check valve is arranged on the air outlet cover of the range hood; The gas control valve and the electromagnetic check valve are configured to be in a closed state when the first detection device detects that the temperature of the chamber reaches a set value.

9. The fire extinguishing device of claim 7, wherein Along the flow direction of the air flow, the air flow speed at a position 300mm upstream of the jet-out end of the universal gun head reaches 30-60m / s.

10. A range hood comprising a fan system, characterized in that The range hood further comprises the fire extinguishing device according to any one of claims 1-9.

Images