Kitchen ventilation device

Abstract

The utility model discloses a kitchen ventilation device which comprises a partition wall arranged on the periphery of a kitchen, a suspended ceiling is arranged on the top of the partition wall, a stainless steel transfer box is installed in the suspended ceiling, and a stainless steel round air pipe is connected to the stainless steel transfer box. The end, away from the stainless steel transfer box, of the stainless steel circular air pipe is connected with an anti-explosion pipeline fan, the anti-explosion pipeline fan is connected with a stainless steel flexible connecting pipe, the stainless steel flexible connecting pipe is connected with a wind-proof and rain-proof elbow through the stainless steel circular air pipe, and the wind-proof and rain-proof elbow extends out of the partition wall. And the bottom of the stainless steel transfer box is connected with an ultra-thin stainless steel rectangular finished vertical air pipe. According to the utility model, the ultrathin stainless steel rectangular finished vertical air pipe is adopted, and the air outlet and the propane detector are arranged at the lower part of the ultrathin stainless steel rectangular finished vertical air pipe, so that the device has an accident ventilation function of quickly detecting leaked liquefied petroleum gas and quickly discharging the leaked liquefied petroleum gas from the lower part; therefore, accidents such as explosion caused by the fact that leaked liquefied petroleum gas is not discharged in time and gathered on the lower portion of a kitchen are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of gas leakage, in particular to a kitchen ventilation device. Background Art

[0002] Since the 1980s, bottled liquefied petroleum gas has been widely promoted as a clean, environmentally friendly, efficient and convenient fuel, and has been widely used in commercial, industrial and civil fuels, becoming one of the main urban gases in many places. Since the beginning of the 21st century, although the market for bottled liquefied petroleum gas has been affected by the development of pipeline gas (natural gas) and has begun to shrink, it is still the main living fuel for residents in many urban and rural areas, urban villages and old urban areas. According to the "National Gas Accident Analysis Report", there are hundreds of gas accidents in the country every year, causing many casualties and causing great losses to the people's property.

[0003] In order to reduce the occurrence of gas accidents, in addition to the government's strengthening of regulatory measures, some technologies such as gas leak detection devices and kitchen ventilation devices for gas kitchens have been developed and promoted. However, these technologies have more or less shortcomings, which have affected the promotion and application of such technologies. For example, most technologies are often designed for places with pipeline natural gas, and the detectors and exhaust vents are set on the ceiling. Such systems are effective for natural gas leak detection and elimination, but are not suitable for places using liquefied petroleum gas.

[0004] According to statistics, the number of accidents caused by the use of liquefied petroleum gas accounts for more than half of the total number of gas accidents. Leak detection and accident ventilation of liquefied petroleum gas are also particularly important. The density of pipeline natural gas is lower than that of air, while liquefied petroleum gas is just the opposite of natural gas. It has the characteristics of greater density than air (easy to accumulate, difficult to diffuse), high calorific value, very low ignition energy and low lower explosion limit. Once bottled liquefied petroleum gas leaks, it tends to gather in the lower part of the room, and the lower part of the room is often poorly ventilated. When the concentration reaches the lower explosion limit, it is very easy to cause an explosion (fire) accident. Bottled liquefied petroleum gas explosion (fire) accidents usually have the characteristics of large degree of destruction, large economic losses, large social impact, easy death and injury, and difficult to extinguish. Therefore, it is also quite urgent to reduce the incidence of bottled liquefied petroleum gas accidents. Utility Model Content

[0005] The purpose of the utility model is to provide a kitchen ventilation device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a kitchen ventilation device, comprising a partition wall arranged around the kitchen, a suspended ceiling arranged on the top of the partition wall, and a stainless steel transfer box installed inside the suspended ceiling, a stainless steel circular air duct connected to the stainless steel transfer box, and an explosion-proof duct fan connected to the end of the stainless steel circular air duct away from the stainless steel transfer box, a stainless steel flexible pipe connected to the explosion-proof duct fan, and the stainless steel flexible pipe is connected to a windproof and rainproof elbow through the stainless steel circular air duct, the windproof and rainproof elbow extends to the outside of the partition wall, and an ultra-thin stainless steel rectangular finished vertical air duct is connected to the bottom of the stainless steel transfer box.

[0007] Preferably, a cabinet is provided at the bottom of the partition wall, and the bottom of the ultra-thin stainless steel rectangular finished vertical air duct extends into the cabinet.

[0008] Preferably, the ultra-thin stainless steel rectangular finished vertical air duct is installed and fixed to the partition wall, and the total thickness of the ultra-thin stainless steel rectangular finished vertical air duct does not exceed 50 mm.

[0009] Preferably, a propane detector is installed in the cabinet, and the propane detector is within 0.3 m from the ground.

[0010] Preferably, a lower air outlet is provided in the cabinet, and an ultra-thin stainless steel rectangular finished vertical air duct is connected to the lower air outlet.

[0011] Preferably, a fan switch 1 is installed on the outside of the partition wall, and a fan switch 2 is installed on the inside of the partition wall, and both the fan switch 1 and the fan switch 2 are connected to the explosion-proof duct fan.

[0012] Preferably, a sound and light alarm device is installed on the suspended ceiling, and the sound and light alarm device is a sound and light alarm.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. Simple structure, easy installation, and easy connection of each component.

[0015] 2. Ultra-thin stainless steel rectangular finished vertical air ducts (the total thickness of the air duct does not exceed 50mm) can be installed against the wall at the end of the kitchen cabinet, achieving a perfect combination with the kitchen cabinet without taking up extra kitchen space.

[0016] 3. Sensitive detection. The detector is installed in a space within 0.3m from the ground and can accurately and quickly detect leaked liquefied petroleum gas.

[0017] 4. The ventilation effect is good. The exhaust vent is installed within 0.3m from the ground, which can promptly discharge the liquefied petroleum gas leaked from the lower part of the room. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a side structural schematic diagram of the utility model.

[0020] In the figure: 1. Partition wall; 2. Ceiling; 3. Cabinet; 4. Sound and light alarm device; 5. Ultra-thin stainless steel rectangular finished vertical air duct; 6. Lower exhaust vent; 7. Propane detector; 8. Fan switch one; 9. Fan switch two; 10. Stainless steel transfer box; 11. Stainless steel circular air duct; 12. Explosion-proof duct fan; 13. Stainless steel flexible pipe; 14. Wind and rainproof elbow. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-2 The utility model provides a technical solution: a kitchen ventilation device, comprising a partition wall 1 arranged around the kitchen, a suspended ceiling 2 is arranged on the top of the partition wall 1, and a stainless steel transfer box 10 is installed inside the suspended ceiling 2, the stainless steel transfer box 10 is connected to a stainless steel circular air duct 11, and the end of the stainless steel circular air duct 11 away from the stainless steel transfer box 10 is connected to an explosion-proof duct fan 12, the explosion-proof duct fan 12 is connected to a stainless steel flexible pipe 13, and the stainless steel flexible pipe 13 is connected to a windproof and rainproof elbow 14, the windproof and rainproof elbow 14 extends to the outside of the partition wall 1, and the bottom of the stainless steel transfer box 10 is connected to an ultra-thin stainless steel rectangular finished vertical air duct 5.

[0023] In the utility model, a cabinet 3 is arranged at the bottom of the partition wall 1 , and the bottom of the ultra-thin stainless steel rectangular finished vertical air duct 5 extends into the cabinet 3 .

[0024] In the utility model, the ultra-thin stainless steel rectangular finished vertical air duct 5 is installed and fixed in contact with the partition wall 1, and the total thickness of the ultra-thin stainless steel rectangular finished vertical air duct 5 does not exceed 50 mm.

[0025] In the present invention, a propane detector 7 is installed in the cabinet 3, and the propane detector 7 is within 0.3m from the ground.

[0026] In the utility model, a lower air outlet 6 is arranged in the cabinet 3 , and the ultra-thin stainless steel rectangular finished vertical air duct 5 is connected to the lower air outlet 6 .

[0027] In the utility model, a fan switch 1 8 is installed on the outer side of the partition wall 1, and a fan switch 2 9 is installed on the inner side of the partition wall 1, and both the fan switch 1 8 and the fan switch 2 9 are connected to the explosion-proof duct fan 12.

[0028] In the utility model, a sound and light alarm device 4 is installed on the suspended ceiling 2, and the sound and light alarm device 4 is a sound and light alarm.

[0029] The utility model has a simple structure and is easy to install and use. The device includes main components such as an explosion-proof duct fan, a propane detector and a lower exhaust vent. The device can quickly discharge the liquefied petroleum gas gathered in the lower part of the room to avoid the occurrence of liquefied petroleum gas explosion accidents. The exhaust vents are arranged at the bottom and also meet the national standard - "Design Code for Heating, Ventilation and Air Conditioning of Civil Buildings" (GB50736-2012) Article 6.3.2 regarding "When used to discharge harmful gases with a density greater than that of air, the exhaust vents located in the lower area of ​​the room shall be located at a distance of no more than 0.3m from the lower edge to the floor".

[0030] The utility model discloses an ultra-thin stainless steel rectangular finished vertical air duct which is a factory prefabricated finished pipe fitting, the total thickness of the air duct does not exceed 50mm, the pipe sections are connected by a socket-and-spigot method, the vertical air duct is fixed to the wall by a bracket, a lower exhaust port is arranged at the bottom of the side panel of the ultra-thin stainless steel rectangular finished vertical air duct, and a propane (LPG) detector is arranged on the inner side of the air duct at the bottom, which is connected to the air at the bottom of the kitchen for timely detection and rapid ventilation, the lower exhaust port is a detachable single-layer louver air port, the louvers are arranged vertically, a stainless steel insect-proof net is arranged on the inner side of the louver, the explosion-proof duct fan and the stainless steel circular air duct are both suspended under the top plate inside the kitchen ceiling by a hanger, the explosion-proof duct fan and the stainless steel circular air duct are connected by a stainless steel hose, one end of the stainless steel circular air duct is connected to the ultra-thin stainless steel rectangular finished vertical air duct by a stainless steel transfer box, and the other end is directly connected to the outdoor air by a windproof and rainproof elbow, and a stainless steel insect-proof net is arranged outside the windproof and rainproof elbow. The stainless steel circular air duct is composed of straight pipe sections, 90-degree elbows, and wind and rainproof elbows. Each pipe section is a factory-prefabricated finished pipe fitting, and the pipe sections are connected by clamps. The sound and light alarm device is fixed on the ceiling, and the fan switches are installed on the walls indoors and outdoors for easy operation to meet the national standard - "Design Code for Heating, Ventilation and Air Conditioning in Civil Buildings" (GB50736-2012) Article 6.3.9 stipulates that "the manual control device for emergency ventilation should be set up in places indoors and outdoors for easy operation".

[0031] like Figure 1-2As shown in the figure, the thickness of the assembled emergency ventilation device is designed to be ultra-thin, and the width is the same as the width of the kitchen cabinet. This unique size allows the stainless steel rectangular finished vertical duct to be installed against the wall at the end of the kitchen cabinet, achieving a perfect combination with the kitchen cabinet without occupying additional kitchen space. In order to meet the national standard - "Design Code for Heating, Ventilation and Air Conditioning of Civil Buildings" (GB50736-2012) Article 6.3.9, which stipulates that "the emergency ventilation volume should be determined according to the type of emitted matter, safety and sanitation concentration requirements, and the ventilation frequency should not be less than 12 times / h", the air volume of the explosion-proof duct fan should be selected as not less than 200m3 / h.

[0032] The operating principle of the emergency ventilation device is as follows: when a liquefied petroleum gas cylinder placed inside a kitchen cabinet is used for a long time and leaks liquefied petroleum gas due to problems with the cylinder body, the cylinder angle valve or the pressure reducing valve, or damage to the gas hose, the density of liquefied petroleum gas is greater than that of air, and the leaked liquefied petroleum gas first accumulates at the bottom of the room. When its concentration reaches 0.1%, the propane (petroleum gas) detector located at the bottom of the ultra-thin stainless steel rectangular finished vertical air duct starts the explosion-proof duct fan to quickly discharge the leaked liquefied petroleum gas to the outdoors through the lower exhaust port, the ultra-thin stainless steel rectangular finished vertical air duct and the stainless steel circular air duct, and at the same time sends out an alarm signal and starts the sound and light alarm to warn the owner of the house to evacuate to a safe area until the owner notifies professionals to come and deal with the leakage accident, at which time the relevant alarm is lifted and the fan stops running.

[0033] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. Although the embodiments of the utility model have been shown and described, it is understandable to those of ordinary skill in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A kitchen ventilation device, comprising a partition wall (1) arranged around the kitchen, characterized in that: A suspended ceiling (2) is arranged on the top of the partition wall (1), and a stainless steel transfer box (10) is installed on the top of the suspended ceiling (2); a stainless steel circular air duct (11) is connected to the stainless steel transfer box (10), and an end of the stainless steel circular air duct (11) away from the stainless steel transfer box (10) is connected to an explosion-proof duct fan (12); a stainless steel flexible pipe (13) is connected to the explosion-proof duct fan (12), and the stainless steel flexible pipe (13) is connected to a windproof and rainproof elbow (14) through the stainless steel circular air duct, and the windproof and rainproof elbow (14) extends to the outside of the partition wall (1); and an ultra-thin stainless steel rectangular finished vertical air duct (5) is connected to the bottom of the stainless steel transfer box (10).

2. A kitchen ventilation device according to claim 1, characterized in that: A cabinet (3) is arranged at the bottom of the partition wall (1), and the bottom of the ultra-thin stainless steel rectangular finished vertical air duct (5) extends into the cabinet (3).

3. A kitchen ventilation device according to claim 1, characterized in that: The ultra-thin stainless steel rectangular finished vertical air duct (5) is installed and fixed in contact with the partition wall (1), and the total thickness of the ultra-thin stainless steel rectangular finished vertical air duct (5) does not exceed 50 mm.

4. A kitchen ventilation device according to claim 2, characterized in that: A propane detector (7) is installed in the cabinet (3), and the propane detector (7) is within 0.3 m from the ground.

5. A kitchen ventilation device according to claim 2, characterized in that: A lower air outlet (6) is provided in the cabinet (3), and an ultra-thin stainless steel rectangular finished vertical air duct (5) is connected to the lower air outlet (6).

6. A kitchen ventilation device according to claim 1, characterized in that: A fan switch 1 (8) is installed on the outdoor side of the partition wall (1), and a fan switch 2 (9) is installed on the indoor side of the partition wall (1), and both the fan switch 1 (8) and the fan switch 2 (9) are connected to the explosion-proof duct fan (12).

7. A kitchen ventilation device according to claim 1, characterized in that: The suspended ceiling (2) is provided with a sound and light alarm device (4), and the sound and light alarm device (4) is a sound and light alarm.

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