CN103267309B - A kind of oil smoke collection device - Google Patents

Abstract

The invention discloses an oil fume collection device, which comprises an oil fume collection box communicated with a flue through a bypass, a piston is arranged at the oil fume entrance of the oil fume collection box, and an air inlet is arranged on the piston, and the oil fume collection box has a The box body is also provided with an exhaust mechanism for sucking the oil fume gas in the flue through the air inlet hole on the piston, and the box body of the oil fume collection box is also provided with an air outlet hole for discharging the oil fume gas to the outside. The oil fume collection device of the present invention is equipped with a piston type oil fume collection box to collect oil fume gas, so that the volume of the inhaled oil fume gas is fixed and is not affected by the flow rate of the flue gas, and the inhaled oil fume gas can be compressed and then discharged through the piston The detection concentration, these all make the detection accuracy of the follow-up oil fume concentration higher.

Description

An oil fume collection device

technical field

The invention relates to the field of oil fume purifiers, in particular to an oil fume collection device capable of improving the detection accuracy of oil fume concentration.

Background technique

At present, catering establishments can be seen everywhere, and these places will inevitably produce a large amount of oily fumes during the cooking process, which will have a great impact on the production and life of surrounding enterprises and residents. For this reason, the environmental protection department requires catering institutions to install and use oil fume purifiers to reduce the impact of oil fume on the surrounding environment.

At present, the most used and effective oil fume purifiers are mainly electrostatic oil fume purifiers. Its working principle is: the polarized area of the purifier polarizes or charges the oil particles in the oil fume, making them charged. , and then let the charged oil particles pass through the plate with high voltage, and the charged oil particles will be pushed to the plate by the force of the electric field under the action of the electric field to complete the adsorption and purification. This electrostatic fume purifier also has the following problems: when the working capacity of the purifier reaches saturation, it is necessary to clean the plate for absorbing some oily particles; otherwise, the purifier will lose its purifying ability. Since catering companies that use electrostatic oil fume purifiers often pay less attention to the purifying ability of the purifier, it often leads to the loss of the purifying ability of the purifier, and the purifier becomes a decoration. Solve the problem that when the absorbance method or illumination method is used to detect the oil fume concentration, because the amount of oil fume adsorbed per unit area is small, the precision of the detected oil fume concentration data is not high, and the problem is not accurate enough.

Therefore, the environmental protection department and other regulatory departments need an effective means to supervise the catering enterprises to clean the plate of the purifier when the cleanliness of the electrostatic fume purifier decreases and the purification capacity is insufficient, so as to restore the working ability of the purifier. However, due to the complex composition of the oil fume itself, the physical and chemical properties of the adsorbed oil particles are not easy to detect, so it is difficult to produce a very effective method for testing the purification ability of the electrostatic oil fume purifier. At present, there are two detection methods, one is absorbance method, and the other is the illumination method. The structure of the collection and adsorption device used by these two methods to collect oil fume samples is unreasonable. The data collected by the collection and adsorption device has a great relationship with the flow rate, and the data is unstable; The volume of the collected gas; in addition, the concentration of the adsorbed oil fume is small and not concentrated, so the accuracy of the test results is not high enough.

Contents of the invention

The object of the present invention is to provide a cooking fume collection device capable of absorbing cooking fume, providing samples for the subsequent detection of the purification ability of the cooking fume purifier, and improving the accuracy of detection of cooking fume concentration.

The purpose of the present invention is achieved through the following technical solutions:

An oil fume collection device, comprising an oil fume collection box communicated with a flue through a bypass, a piston is provided at the oil fume inlet of the oil fume collection box, and an air inlet is provided on the piston, and the box body of the oil fume collection box is also An exhaust mechanism is provided for sucking the fume gas in the flue through the air inlet hole on the piston, and the box body of the fume collection box is also provided with an air outlet hole for discharging the fume gas to the outside.

Preferably, the diameter of the air outlet is 2mm-5mm.

Preferably, the diameter of the air outlet is 3mm-4mm.

Preferably, the diameter of the air inlet hole is 4mm-10mm.

Preferably, the diameter of the air inlet hole is 5mm-8mm.

Preferably, a controller is also included, configured to control the ventilation rate of the ventilation mechanism according to a preset control strategy.

Preferably, the exhaust mechanism is an exhaust fan.

Preferably, along the direction of oil fume gas flow, the air outlet is arranged at the end of the oil fume collection box.

Preferably, the air outlet is arranged at the bottom of the end of the oil fume collection box.

Preferably, the centerline of the air intake hole is parallel to the centerline of the flue.

Preferably, the oil fume collection box communicates with the bottom of the flue through a bypass.

Compared with the prior art, the oil fume collection device of the present invention is provided with an oil fume collection box communicated with the flue through a bypass, the oil fume inlet of the oil fume collection box is provided with a piston, and the piston is provided with an air inlet, so The box body of the oil fume collection box is also provided with an exhaust mechanism for sucking the oil fume gas in the flue through the air inlet hole on the piston. Fixed, not affected by the flue gas flow rate, and through the piston can compress the inhaled soot gas and then discharge the detection concentration, all of which make the detection accuracy of the follow-up soot concentration higher;

Further, the air outlet hole is set with a small diameter of 2 mm to 5 mm, so that the effective components in the gas can be concentrated in a small range, the flow rate of the oil fume gas is fast, and the effective components in the oil fume gas are not easy to adhere. The soot gas is concentratedly sprayed onto the medium, so that the concentration of the key components of the soot in the adsorption medium is higher, and the accuracy of the next step of calculating the soot concentration is further improved.

Description of drawings

Fig. 1 is a schematic structural view of Embodiment 1 of the oil fume collection device of the present invention;

The arrows drawn on the piston in the figure indicate the moving direction of the piston, and the rest of the arrows indicate the flow direction of the soot gas.

Detailed ways

In order to make the object, technical solution and effect of the present invention clearer, the following specific examples are used to describe in detail.

Embodiment one

Referring to Fig. 1, the oil fume collecting device of the present invention comprises an oil fume collecting box 3 arranged beside the flue 1, the entrance of the oil fume collecting box 3 is connected with the bypass of the flue through a pipeline 2; the oil fume collecting box 3 is provided near the entrance There is a piston 4, the piston 4 is provided with an air intake through hole 41, and the oil fume collection box is also provided with an exhaust fan 6, which is used to suck the oil fume in the flue into the box body of the oil fume collection box; A small air outlet 31 is provided, through which the oil fume sucked into the oil fume collection box is discharged outwards, and sprayed onto the adsorption medium 5 for subsequent detection.

When the oil fume collection device of this embodiment is in use, the exhaust fan 6 works, and the oil fume gas in the flue 1 enters the oil fume collection box through the pipeline 2 and the air intake hole 41 on the piston 4, and the piston is under the action of the air flow. It will also move towards the flow direction of the oil fume, that is, move towards the bottom of the box, compress the oil fume gas, and the compressed oil fume gas will be discharged from the small air outlet hole 31 and sprayed onto the adsorption medium 5 . In the oil fume collection device of this embodiment, since the oil fume collection box with a piston is set to collect the oil fume gas, the volume of the inhaled gas is fixed and is not affected by the flow rate of the flue gas, and the oil fume gas can be compressed, so that the subsequent use of the absorbance method Or the light method can get more accurate results when detecting the concentration of oil fume; because the diameter of the small air outlet is small, if it can be set in the range of 2mm to 5mm, it can concentrate the active components in the gas to a small range, and the oil fume When the gas passes through, the flow rate is fast, and the effective components in the fume gas are not easy to adhere, and the fume gas can be sprayed onto the medium in a concentrated manner, so that the concentration of the key components of the fume in the adsorption medium is high, which has a great effect on improving the accuracy of the concentration calculation in the next step .

Embodiment two

Different from Embodiment 1, the oil fume collection device in this example further includes a controller for controlling the ventilation rate of the ventilation mechanism according to a preset control strategy. The rest are the same as those in Embodiment 1, and will not be repeated here.

The above are only preferred implementations of the present invention. It should be noted that the above preferred implementations should not be regarded as limiting the present invention, and the scope of protection of the present invention should be determined by the claims. For those skilled in the art, without departing from the spirit and scope of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims (10)

1. an oil smoke collection device, it is characterized in that, comprise the oil fume acquisition case be communicated with flue by bypass, the oil smoke porch of described oil fume acquisition case is provided with piston, described piston is provided with air admission hole, the casing of described oil fume acquisition case is also provided with the air draft mechanism for being sucked via the air admission hole on piston by the soot gas in flue, and the casing of described oil fume acquisition case is also provided with the venthole for externally discharging soot gas.

2. oil smoke collection device as claimed in claim 1, it is characterized in that, the bore of described venthole is 2mm ~ 5mm.

3. oil smoke collection device as claimed in claim 1, it is characterized in that, the bore of described venthole is 3mm ~ 4mm.

4. oil smoke collection device as claimed in claim 1, it is characterized in that, the bore of described air admission hole is 4mm ~ 10mm.

5. oil smoke collection device as claimed in claim 1, is characterized in that, also comprise controller, for controlling the exhausting speed of air draft mechanism according to the control strategy preset.

6. oil smoke collection device as claimed in claim 1, it is characterized in that, described air draft mechanism is air exhauster.

7. oil smoke collection device as claimed in claim 1, is characterized in that, along the direction of soot gas flowing, described venthole is arranged on the end of oil fume acquisition casing.

8. oil smoke collection device as claimed in claim 7, it is characterized in that, described venthole is arranged on the bottom of the end of oil fume acquisition casing.

9. oil smoke collection device as claimed in claim 1, is characterized in that, the center line of described air admission hole and the centerline parallel of flue.

10. oil smoke collection device as claimed in claim 1, is characterized in that, described oil fume acquisition case is by the bottom conducting of bypass and flue.