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公开(公告)号：US11639890B2
公开(公告)日：2023-05-02
申请号：US16949073
申请日：2020-10-13
发明人： Jiusong Dai , Qinlong Xu , Zhongqun Mao , Yongding Zhu , Ge Liu
摘要： 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.
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公开(公告)号：US20210025810A1
公开(公告)日：2021-01-28
申请号：US16949073
申请日：2020-10-13
发明人： Jiusong Dai , Qinlong Xu , Zhongqun Mao , Yongding Zhu , Ge Liu
IPC分类号： G01N21/15
摘要： 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.
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公开(公告)号：US20190010955A1
公开(公告)日：2019-01-10
申请号：US16073741
申请日：2017-01-24
发明人： Xuefei Liang , Yi Liu , Jiajie Zhou , Zhongqun Mao , Yongding Zhu , Ge Liu
摘要： The present invention discloses an impeller for a fan, which comprises a plurality of blades (2) and a rear wheel disc (1); the plurality of blades (2) are arranged one by one successively along a circumferential direction of the rear wheel disc (1); an angle α is defined between the first projection line (21a) of each outer edge (21) and a radial line of the rear wheel disc (1) and satisfies the following condition: −60°≤α≤60°; an angle β is defined between the second projection line (22a) of each inner edge (22) and the radial line of the rear wheel disc (1) and satisfies the following condition: 20°≤β≤70°; an angle θ is defined between a first connecting line (L1) and a second connecting line (L2) and satisfies the following condition: 10°≤Θ≤65°. The impeller for a fan is good in aerodynamic performance, high in both fan efficiency and air pressure, and large in gradient of the generated negative pressure.
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