Kitchen environmental protection oil fumes purification exhaust system

Abstract

This invention discloses a kitchen environment protection oil mist purification exhaust system. This system includes an oil mist exhaust system, a negative pressure device that generates negative pressure to draw in oil mist from the kitchen, an oil mist cooling and condensation chamber with a filter installed inside for cooling and condensing the oil mist, and a condensation gas inlet. A ventilation device draws in air from the ventilation space, compresses it with a compressor, and sends it to a vortex tube. The low-temperature gas output end of the vortex tube is connected to the condensation gas inlet of the oil mist cooling and condensation chamber. The low-temperature gas generated by the vortex tube is used to lower the temperature inside the oil mist cooling and condensation chamber, keeping the filter in a low-temperature environment. As the oil mist passes through the low-temperature filter, it is cooled and collected, thereby significantly reducing the amount of oil mist discharged.

Description

Technical Field

[0001] The present invention relates to an exhaust system for purifying kitchen fumes, and more specifically, to an environmental protection exhaust system that combines indoor ventilation and kitchen fume purification.

[0002] In the kitchen of a restaurant, a large amount of fumes are generated during the cooking process. Especially during cooking such as frying and stir-frying, most of the existing restaurant fume emissions are extracted from the kitchen by the negative pressure generated by the fan without treatment and directly discharged into the external environment. When these high-temperature fumes that may contain carcinogens are directly discharged and inhaled by the human body, it will affect health. From the perspective of environmental protection, even if some exhaust systems incorporate fume separation devices, the fumes only condense on the low-temperature fan blades and are discharged and collected by the centrifugal force of the blade rotation. However, due to the heating by a large amount of high-temperature fumes, the temperature of the blades also rises, and the condensation effect on the surface of the fumes is significantly reduced. In the actual use process, the rate of collected fumes is too low, so the fume separation effect is not sufficient.

Summary of the Invention

Problems to be Solved by the Invention

[0003] The object of the present invention is to provide a kitchen environmental protection fume purification exhaust system, which realizes ventilation by inhaling the air in the ventilation space using a vortex tube, and at the same time generates low-temperature gas and transports it to the exhaust system for condensation collection of fumes. Thereby, the effects of ventilation and fume separation are achieved simultaneously, which is more environmentally friendly and greatly improves the fume separation efficiency.

Means for Solving the Problems

[0004] To achieve the above object, the present invention provides the following technical solutions. The present invention is a kitchen environmental protection fume purification exhaust system, An oil fumes exhaust system, wherein the intake port is installed inside the kitchen, and a negative pressure device generates negative pressure to draw oil fumes from the kitchen into the intake port and transport them through piping. An oil mist cooling and condensing chamber, in which a filter for cooling and condensing oil mist is installed. The oil mist cooling and condensing chamber has an oil mist cooling and condensing chamber with a condensing gas inlet, A vortex tube and A ventilation system comprising a compressor that draws in air from a ventilation space, compresses it with another compressor, and sends it to the compressed air inlet of a vortex tube, and the low-temperature gas output end of the vortex tube is connected to the condensed gas inlet of an oil mist cooling condensation chamber, The gas in the ventilation space is compressed by a compressor and then sent to a vortex tube. The low-temperature gas output end of the vortex tube generates low-temperature gas, which is then transported to an oil fumes cooling and condensation chamber to cool the filter. Oil fumes generated in the kitchen are drawn into the oil fumes cooling and condensation chamber by a negative pressure device. The oil fumes are cooled by the low-temperature gas, condensed and separated as they pass through the cooled filter, and the separated air is discharged from the exhaust port of the oil fumes cooling and condensation chamber and connected to the system's main exhaust port via piping. This provides a kitchen environment protection oil fumes purification exhaust system. Preferably, the high-temperature gas output end of the vortex tube is connected to the system's genaut exhaust port and mixed with the air at the genaut exhaust port. Preferably, the system further includes a water tank and a heat exchanger, the hot gas output end of the vortex tube being connected to the heat exchanger, the heat exchanger being immersed in the water tank and heating the water. Preferably, the heat exchanger is a sealed box, with a gas inlet and a gas outlet at both ends of the box, the gas inlet being connected via piping to the high-temperature gas output end of a vortex tube, and the gas outlet being connected to the system's main exhaust port. Inside the box, heat receiving fins are arranged at an angle along the direction of gas flow, forming a bypass gas passage. Preferably, the heat exchanger is a sealed box, with a gas inlet and a gas outlet at both ends of the box, the gas inlet being connected via piping to the high-temperature gas output end of a vortex tube, and the gas outlet being connected to the system's main exhaust port. Honeycomb-shaped heat receiving fins are arranged inside the box along the direction of gas flow. Preferably, the system further includes a dish preheating cabinet, with exhaust vents uniformly provided at the bottom of the cabinet, the high-temperature gas output end of the vortex tube connected to the exhaust vents, and the dishes placed above the exhaust vents and heated by the high-temperature gas.

[0005] Preferably, the negative pressure device of the oil mist exhaust system is connected via piping to the rear of the oil mist cooling and condensing chamber, that is, the exhaust port of the oil mist cooling and condensing chamber is connected to the intake port of the negative pressure device, and the exhaust port of the negative pressure device is connected via piping to the high-temperature gas output end of the vortex tube. [Effects of the Invention]

[0006] Compared to conventional technology, the beneficial effects of the present invention are as follows: The apparatus of the present invention cools the internal temperature of the oil mist cooling condensation chamber to 5-8°C using low-temperature gas generated by a vortex tube, maintaining the filter in a low-temperature environment. As the oil mist passes through the low-temperature filter, it is cooled and collected, and the oil mist condenses into a liquid from its smoke point and is retained and collected in the oil mist cooling condensation chamber. This significantly reduces the amount of oil mist discharged. The oil mist and filter condensed in the oil mist cooling condensation chamber can be cleaned and replaced periodically as needed. Since the air supply to the vortex tube is connected to a ventilation system, the air in the space requiring ventilation can be simultaneously utilized, compressed, and supplied to the vortex tube to achieve refrigeration. By combining these two, energy can be used more efficiently to complete different tasks. Furthermore, the apparatus of the present invention has low manufacturing costs and can reduce the emission of harmful substances in the air and become more environmentally friendly by simply modifying existing oil mist discharge systems. [Brief explanation of the drawing]

[0007] The present invention will be further described below with reference to the drawings. [Figure 1]This is a schematic diagram showing the structure of the present invention. [Figure 2] This is a diagram showing the structure of a water storage tank. [Figure 3] This is a diagram showing the structure of a dish preheating cabinet. [Modes for carrying out the invention]

[0008] The embodiments of the present invention will be described below clearly and completely with reference to the drawings. However, the embodiments described are only a selection of embodiments of the present invention, not all embodiments. All other embodiments that can be obtained by those skilled in the art without creative work based on the embodiments of the present invention are within the scope of the protection of the present invention.

[0009] To address the technical problem in existing kitchen oil fumes exhaust systems, which do not perform oil fumes separation treatment, the following technical solution is provided, referring to Figure 1. The kitchen environmental protection oil fumes purification exhaust system includes an oil fumes exhaust system 1, an oil fumes cooling and condensation chamber 3, a ventilation device 5, and a vortex tube 7, etc. The oil fumes exhaust system 1 may be an existing oil fumes exhaust system used in a kitchen. Specifically, the oil fumes exhaust system 1 typically includes a motor and fan blades that generate negative pressure in the piping, drawing in oil fumes from the kitchen through an intake port 2 and transporting them through the piping to the oil fumes cooling and condensation chamber 3.

[0010] Specifically, the negative pressure device 9 of the oil mist exhaust system 1 is connected to the rear of the oil mist cooling and condensation chamber 3 via piping; that is, the exhaust port of the oil mist cooling and condensation chamber 3 is connected to the intake port of the negative pressure device 9, and the exhaust port of the negative pressure device 9 is connected to the high-temperature gas output end of the vortex tube 7 via piping. This allows negative pressure to be formed inside the oil mist cooling and condensation chamber 3, so that even if the filter 4 becomes locally clogged due to the condensation of oil mist, it can continue to draw in smoke from the kitchen, resulting in better performance.

[0011] The oil mist cooling condensation chamber 3 has a filter 4 and a cold air inlet installed inside. The filter 4 typically uses a metal support grid, which allows for rapid cooling, facilitates condensation of oil mist on its surface, does not obstruct airflow, and does not affect the normal operation of the oil mist exhaust system. The oil mist cooling condensation chamber 3 has a condensation gas inlet, which is connected to the low-temperature gas output end of the vortex tube 7. The low-temperature gas generated by the vortex tube 7 is transported to the oil mist cooling condensation chamber 3 to cool the filter 4.

[0012] Ventilation devices 5 are typically installed in restaurants and are used to introduce fresh outside air into the restaurant and expel stale air from inside the restaurant to the outside. Relatively common examples include exhaust fans or central air conditioning systems. The ventilation device 5 involved in the present invention differs from existing ones in that it uses a compressor 6 to draw in air from inside the restaurant and then inputs the compressed air into the air inlet of the vortex tube 7. According to the operating characteristics of the vortex tube 7, low-temperature gas and high-temperature gas are output from both sides of the vortex tube 7, respectively, and the temperature of the low-temperature and high-temperature gases can be adjusted by adjusting the airflow rate at the air inlet. This makes it possible to generate a freezing or heating effect using the gas used for ventilation while simultaneously ventilating the restaurant.

[0013] The low-temperature gas generated by the vortex tube 7 is transported to the oil mist cooling and condensation chamber 3, where the oil mist is condensed. The generated high-temperature gas can also be utilized further, as described in the related embodiments below.

[0014] Example 1 If the high-temperature gas from the vortex tube 7 is discharged directly into the environment without heat exchange, it may cause discomfort to the surrounding area. On the other hand, the air in the oil mist cools down as it passes through the oil mist cooling condensation chamber 3. Therefore, it is more ideal to mix the low-temperature air from the oil mist cooling condensation chamber 3 with the high-temperature gas from the vortex tube 7 at the system's main exhaust port 8 to lower the temperature of the high-temperature gas before discharging it into the environment.

[0015] Example 2 Since hot water is frequently used in kitchens, the high-temperature gas generated by the vortex tube 7 can be effectively utilized for heating. For example, water in a water tank can be heated. Referring to Figure 2, the high-temperature gas output end of the vortex tube 7 is connected to a heat exchanger 10, and the water in the water tank is heated by the heat exchanger 10. To achieve a higher heat exchange rate, it is necessary to increase the specific surface area of ​​contact between the heat exchanger 10 and the high-temperature gas. Specifically, the present invention provides two structures to achieve this. One is to arrange heat receiving fins 11 inside the box at an angle along the direction of gas flow, forming a bypass gas passage. When high-temperature gas enters the heat exchanger 10, the flow velocity decreases as it flows along the heat receiving fins 11, increasing the time the high-temperature gas remains inside the heat exchanger 10, and allowing sufficient heat to be conducted to the heat receiving fins 11. At the same time, the heat receiving fins 11 significantly increase the surface area in contact between the heat exchanger 10 and the high-temperature gas, thereby improving the heat exchange efficiency. The other is to arrange honeycomb-shaped heat receiving fins 11 inside the box along the direction of gas flow. The honeycomb design can increase the heat absorption area, reduce resistance to high-temperature gases, lower gas flow resistance, and meet the needs of different usage situations. The heat exchanger 10 and heat receiving fins 11 mentioned above are usually made of materials with good thermal conductivity, such as copper.

[0016] Example 3 The high-temperature gas from the vortex tube 7 can also be used to preheat tableware. Referring to Figure 3, exhaust holes 12 are uniformly installed at the bottom of the tableware preheating chamber, and the high-temperature gas output end of the vortex tube 7 is connected to the exhaust holes 12. The tableware is placed above the exhaust holes 12 and heated by the high-temperature gas, allowing for, for example, high-temperature sterilization of the tableware.

[0017] In this specification, relational terms such as "first" and "second" are used solely to distinguish one entity or operation from another, and do not necessarily imply or suggest any actual relationship or order between these entities or operations. Furthermore, "includes," "contains," or other variations are intended to be non-exclusive, meaning that a process, method, article, or apparatus containing a set of elements includes not only the explicitly listed elements but also other elements not explicitly listed, or elements specific to such process, method, article, or apparatus.

[0018] Although embodiments of the present invention have already been shown and described, those skilled in the art will understand that various modifications, alterations, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention. The scope of the present invention is limited by the appended claims and equivalents.

Claims

1. Kitchen environmental protection oil fumes purification exhaust system, An oil fumes exhaust system, wherein the intake port of the oil fumes exhaust system is installed in the kitchen, and a negative pressure device generates negative pressure to draw oil fumes from the kitchen into the intake port and transport them through piping. An oil mist cooling and condensing chamber, wherein a filter for cooling and condensing oil mist is installed inside the oil mist cooling and condensing chamber, and the oil mist cooling and condensing chamber has a condensing gas inlet, A vortex tube and A ventilation system that includes a compressor that draws in air from a ventilation space, compresses it with another compressor, and sends it to the compressed air inlet of a vortex tube, and the low-temperature gas output end of the vortex tube is connected to the condensed gas inlet of an oil mist cooling condensation chamber, This kitchen environmental protection oil mist purification exhaust system features the following characteristics: gas in the ventilation space is compressed by a compressor to generate high-pressure gas, which is then sent to a vortex tube. The low-temperature gas output end of the vortex tube generates low-temperature gas, which is then transported to an oil mist cooling and condensation chamber to cool the filter. Oil mist generated in the kitchen is drawn into the oil mist cooling and condensation chamber by a negative pressure device. The oil mist is condensed and separated by the cooling of the low-temperature gas as it passes through the cooled filter. The separated air is discharged from the exhaust port of the oil mist cooling and condensation chamber and connected to the system's main exhaust port via piping.

2. The kitchen environmental protection oil fumes purification exhaust system according to claim 1, characterized in that the high-temperature gas output end of the vortex tube is connected to the system's general exhaust port and mixed with the air at the general exhaust port.

3. The kitchen environment protection oil mist purification exhaust system according to claim 1, further comprising a water storage tank and a heat exchanger, wherein the high-temperature gas output end of the vortex tube is connected to the heat exchanger, and the heat exchanger is immersed in the water storage tank to heat the water.

4. The kitchen environment protection oil mist purification exhaust system according to claim 3, characterized in that the heat exchanger is a sealed box, with a gas inlet and a gas outlet at both ends of the box, the gas inlet being connected to the high-temperature gas output end of a vortex tube via piping, and the gas outlet being connected to the system's general exhaust port, and heat receiving fins arranged inside the box at an angle along the direction of gas flow, forming a bypass gas passage.

5. The kitchen environment protection oil mist purification exhaust system according to claim 3, characterized in that the heat exchanger is a sealed box, with a gas inlet and a gas outlet at both ends of the box, the gas inlet being connected to the high-temperature gas output end of a vortex tube via piping, and the gas outlet being connected to the system's general exhaust port, and honeycomb-shaped heat receiving fins arranged inside the box in the direction of gas flow.

6. The kitchen environment protection oil fumes purification exhaust system according to claim 1, further comprising a dish preheating cabinet, with exhaust holes uniformly provided at the bottom of the cabinet, the high-temperature gas output end of the vortex tube connected to the exhaust holes, and the dishes placed above the exhaust holes and heated by the high-temperature gas.

7. The kitchen environment protection oil mist purification exhaust system according to claim 1, characterized in that the negative pressure device of the oil mist exhaust system is connected via piping to the rear of the oil mist cooling and condensing chamber, the exhaust port of the oil mist cooling and condensing chamber is connected to the intake port of the negative pressure device, and the exhaust port of the negative pressure device is connected via piping to the high-temperature gas output end of the vortex tube.

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