US 11,639,890 B2Granted

Protection device of oil-smoke sensor

AssigneeNingbo Fotile Kitchen Ware Co., Ltd.

InventorsJiusong Dai, Qinlong Xu, Zhongqun Mao, Yongding Zhu, Ge Liu

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Abstract

A protection device for an oil-smoke sensor has a protection housing having two ends and an inner chamber; the first end having a first opening for receiving a probe of the oil-smoke sensor and in communication with the inner chamber; a second opening is disposed on the second end which is opposite to the first opening and in communication with the inner chamber. Because the probe is sealing mounted in the first opening, the probe will not be directly exposed in oil-smoke flow. The protective device is mounted such that the axial direction of the protective device is vertical to the oil-smoke flow direction. Therefore, the inner chamber of the protection housing has a pressure with respect to the oil-smoke flow that tangentially flows at a high speed, and the oil-smoke can only be diffused into the protection housing, thus, the probe is much less likely to be contaminated.

Claims10

Dependent claims

A protection device for an oil-smoke sensor comprising:

a protection housing having an external wall, a first end, a second end, and an inner chamber;
the first end having a first opening for receiving a probe of the oil-smoke sensor and in communication with the inner chamber;
a second opening is disposed on the second end and in communication with the inner chamber, the second opening being opposed to the first opening;
an inner diameter of the inner chamber varies along a length of the inner chamber and the inner chamber having an internal wall not being parallel to the external wall of the protection housing;
N baffles are disposed in the inner chamber communicated with the first opening and the second opening, and each baffle is provided with a through hole, wherein N is a natural number greater than or equal to 1;
when N is greater than or equal to 2, the through holes in every two adjacent baffles have different opening diameters;
M pairs of opposite baffles are disposed on the inner wall of the inner chamber in communication with the first opening and the second opening, and a gap is reserved between the baffles in each pair, where M is a natural number greater than or equal to 1.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/949,073Filed 13 Oct 2020 · division
Priority: CN 201610398643.57 Jun 2016
Published: US 2021/0025810 A128 Jan 2021
Granted: 2 May 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G01N 21/15
Arrangements or apparatus for facilitating the optical investigation: preventing contamination of the components of the optical system or…
G01N 15/0205
Investigating particle size or size distribution: by optical means
G01N 15/06
Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials: investigating…
G01N 15/0625
Of the filter type: optical scan of the deposits

Family

PCT/CN2017/000206Parent of this division · filed 2 Mar 2017
US 2021/0025810 A1Pre-grant publication · published 28 Jan 2021
Application16/097,711Parent of this division
US 10,871,442 B2Parent of this division
US 2019/0162653 A1Published application
US 11,639,890 B2This patent

From the US filing history. Foreign family members aren’t listed.