Patent Application
20250216089
The present invention involves an exhaust system for purifying kitchen fume, specifically relates to an eco kitchen fume purification and extraction system.
Restaurant kitchens will produce a large amount of fume during the cooking process, especially when frying, stir-frying, etc. The fume emissions from most existing restaurants are untreated and discharged directly from the kitchen by the negative pressure generated by the fan to the external environment. The direct discharge of such high-temperature fume may contain carcinogens and will affect health if inhaled by the human body. Even for the sake of environmental protection, some exhaust systems will add fume separation devices which the fume is condensed on the lower temperature fan blades and thrown out by the centrifugal force of the fan blade rotation. However, heating by the large amount of high temperature fume, the temperature of the fan blades will also increase, which will greatly affect the effect of fume condensation on the surface. The proportion of fumes collection is too low actually, and the effect of fume separation is not ideal.
The present invention provides an eco kitchen fume purification and extraction system, which inhales air from the ventilation space through a vortex tube to achieve ventilation and condensation of fume by generating low-temperature air to the extraction system, simultaneously achieving ventilation and separation of fume, which is more environmentally friendly and greatly improve the separation efficiency of fume.
The technical solution of the present invention is:
An eco kitchen fume purification and extraction system, comprising:
Further, a high-temperature air outlet of the vortex tube is connected to the air outlet of the fume condensation chamber, and is mixed with the air from the air outlet.
Further, comprises a water tank and a heat exchanger; the high-temperature air outlet of the vortex tube is connected to the heat exchanger, the heat exchanger is immersed in the water tank to heat the water inside.
Further, the heat exchanger is a sealed container with an air inlet and an air outlet, the air inlet is connected to the high-temperature air outlet of the vortex tube through a pipeline, and the air outlet is connected to the air outlet of the condensation chamber; heat-absorbing fins are arranged obliquely along the fluid direction of the air in the container to form a circuitous air channel.
Further, the heat exchanger is a sealed container with an air inlet and an air outlet, the air inlet is connected to the high-temperature air outlet of the vortex tube through a pipeline, and the air outlet is connected to the air outlet of the condensation chamber; honeycomb-shaped heat-absorbing fins are arranged in the container along the fluid direction of the air.
Further, comprises a preheating cabinet for tableware; the bottom of the cabinet is evenly provided with exhaust holes; the high-temperature air outlet of the vortex tube is connected to the exhaust holes; the tableware is placed above the exhaust holes and is heated by the high-temperature air.
In view of existing technology, the beneficial effects of the present invention are: the device of the present invention uses the fume condensation chamber to cool its internal temperature to 5-8° C. through the low-temperature air generated by the vortex tube, and maintains the filter in a low-temperature environment. The fume is cooled and collected when passing through the low-temperature filter. The fume condenses into a liquid state from the smoke point and is retained in the fume condensation chamber for collection, thereby greatly reducing the amount of fume emissions. The fume condensed in the fume condensation chamber and the filter will be cleaned and replaced regularly as needed. The air inlet of the vortex tube is connected to the ventilation device, so the air in the ventilation space can be compressed and supplied to the vortex tube for cooling. The combination of above can make full use of energy to complete different usages. Moreover, the device of the present invention is low in cost and only requires simple modifications to the existing fume emission system, thereby reducing the emission of harmful substances in the air and making it more environmentally friendly.
The sole FIGURE is a schematic structural diagram of the present invention.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.
In order to solve the problem in the existing technology that the kitchen fume emission system does not perform fume separation processing, refer to the sole FIGURE, and the following solutions are provided:
The eco kitchen fume purification and extraction system comprises a fume extraction system 1, a fume condensation chamber 3, a ventilation device 5 and a vortex tube 7, etc. The fume extraction system 1 may be the fume emission equipment used in existing kitchens. Specifically, the fume extraction system 1 usually uses a motor and fan to generate negative pressure in a pipeline, inhale the fume in the kitchen through the air inlet 2, and then transmit it to the fume cooling condensation chamber 3 through a pipeline.
The fume condensation chamber 3 is provided with a filter 4 and a condensed air inlet in the chamber. The filter 4 usually uses a grille made of metal, which can quickly cool down and facilitate the condensation of fume on its surface, and does not hinder the circulation of air and affect the normal operation of the fume extraction system. The fume condensation chamber 3 is provided with a condensed air inlet connected to the low-temperature air outlet of the vortex tube 7. The low-temperature air generated by the vortex tube 7 is transmitted to the fume condensation chamber 3 to cool the filter 4.
The ventilation device 5 is usually installed in a restaurant to inhale outdoor fresh air into the restaurant and discharge the polluted air in the restaurant to the outside. The more commonly embodiment is ventilation fans or central air-conditioning systems. The ventilation device 5 involved in the present invention is different from the common solution that it uses a compression device 6 to inhale in the air in the restaurant, and then outputs the compressed air into the air inlet of the vortex tube 7. According to the characteristics of the vortex tube 7, low-temperature air and high-temperature air will be output to both sides of the vortex tube 7 respectively. By adjusting the air flow rate at the air inlet, the temperatures of the low-temperature air and the high-temperature air can be adjusted which can simultaneously achieve ventilation in the restaurant and use the ventilation air to produce cooling or heating effects.
The low-temperature air generated by the vortex tube 7 is transmitted to the fume condensation chamber 3 to condense the fume, and the high-temperature air can also be further utilized. Such as the following relevant embodiments.
In the first embodiment, if the high-temperature air outlet of the vortex tube 7 is directly discharged to the environment without heat exchange utilization, it may cause discomfort to people. The air in the fume will be cooled by the fume condensation chamber 3. So, the low-temperature air in the fume condensation chamber 3 and the high-temperature air in the vortex tube 7 can be mixed at the air outlet 8 to cool down the temperature of the high-temperature air before it is released to the environment.
In the second embodiment, the kitchen often uses hot water, so the high-temperature air generated by the vortex tube 7 can be fully utilized for heating, such as heating the water in the water tank. The high-temperature air outlet of the vortex tube 7 is connected to the heat exchanger. The water in the water tank is heated by the heat exchanger. In order to improve a higher heat exchange rate, it is necessary to increase the specific surface area of the heat exchanger in contact with the high-temperature air. Specifically, the present invention will provide two structures for implementation. One is that the heat-absorbing fins are arranged obliquely along the fluid direction of the air in the container to form a circuitous air channel. When the high-temperature air enters the heat exchanger, it will flow along the heat-absorbing fins and the flow rate will be reduced and increase the residence time of the high-temperature air in the heat exchanger, so that the heat can be better conducted to the heat-absorbing fins. And the heat-absorbing fins can also greatly increase the surface area of the heat exchanger in contact with high-temperature air to improve heat exchange efficiency. Another, there are honeycomb-shaped heat-absorbing fins arranged in the container along the fluid direction of the air. The honeycomb-shaped design can increase the heat-absorbing area, and has less resistance to high-temperature air, which can reduce the fluid resistance of the air to facilitate different uses. The heat exchangers and heat-absorbing fins mentioned above are usually made of materials with good thermal conductivity, such as copper.
In the third embodiment, the high-temperature gas of the vortex tube 7 can also be used to preheat the tableware. The tableware preheating cabinet is evenly provided with exhaust holes. The high-temperature gas outlet of the vortex tube 7 is connected to the exhaust holes. The tableware is placed above the exhaust holes and heated by high-temperature gas, such as high-temperature sterilization of tableware.
It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations are mutually exclusive. any such actual relationship or sequence exists between them. Furthermore, the terms “comprises,” “comprises,” or any other variations thereof are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also those not expressly listed other elements, or elements inherent to the process, method, article or equipment.
Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, and substitutions can be made to these embodiments without departing from the principles and spirit of the invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202311843373.0 | Dec 2023 | CN | national |
