# US 11,077,396 B2 · Ventilating device

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- Number: US 11,077,396 B2
- Document ID: US11077396B2
- Status: Granted
- Kind: B2
- Application number: 16/142,169
- Filed: 2018-09-26
- Published: 2019-05-30
- Granted: 2021-08-03
- Earliest claimed: 2017-11-27
- Assignees: Panasonic Ecology Systems Guangdong Co., Ltd.; Panasonic Corporation
- Applicants: Panasonic Ecology Systems Guangdong Co., Ltd.; Panasonic Corporation
- Inventors: Decong Yang; Guofeng Pang; Runxin Chen; Naoyuki Funada
- Web page: https://patentgrep.com/patent/US11077396B2

## CPC

- B01D 46/0086: {Filter condition indicators}
- B01D 46/0043: {containing fixed gas displacement elements or cores}
- B01D 46/0045: {by using vanes}
- B01D 46/44: controlling filtration
- F24F 7/065: {fan combined with single duct; mounting arrangements of a fan in a duct}
- F24F 8/10: by separation, e.g. by filtering
- F24F 8/108: using dry filter elements
- F24F 11/0001: {for ventilation (F24F11/30 takes precedence)}
- F24F 13/0236: {with ducts including air distributors, e.g. air collecting boxes with at least three openings}
- F24F 13/20: Casings or covers
- F24F 13/22: Means for preventing condensation or evacuating condensate
- B01D 46/10: Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D 2279/35: for venting arrangements
- F24F 11/39: Monitoring filter performance
- F24F 11/52: Indication arrangements, e.g. displays
- F24F 13/28: Arrangement or mounting of filters
- F24F 2011/0002: {for admittance of outside air}
- F24F 2013/205: {Mounting a ventilator fan therein}
- F24F 2013/207: {with control knobs; Mounting controlling members or control units therein}
- F24F 2013/221: {to avoid the formation of condensate, e.g. dew}
- F24F 2140/30: Condensation of water from cooled air
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02)

## Abstract

A ventilating device including: a frame provided with an air inlet and an air outlet, an air blowing unit for directing air, a control circuit board for controlling the air blowing unit, an operation switch for adjusting a rotating speed of the air blowing unit, and a circuit board box for accommodating the control circuit board. The circuit board box includes: a first accommodating portion in which the operation switch is housed and a second accommodating portion in which the control circuit board is housed. The first accommodating portion includes: a first opening that functions as an operation port; and a panel for covering the first opening. The frame is provided with a second opening opposite to the first opening. The panel is exposed from the second opening to exterior of the frame. A sealing portion is provided around the first opening.

## Claims

### Claim 1

A ventilating device comprising:
a frame forming an outer profile of the ventilating device and provided with an air inlet and an air outlet,
an air blowing unit for directing air from the air inlet to the air outlet;
a control circuit board for controlling operation of the air blowing unit,
an operation switch for adjusting a rotating speed of the air blowing unit by means of the control circuit board, and
a circuit board box for accommodating the control circuit board,
wherein the circuit board box comprises a first accommodating portion in which the operation switch is housed and a second accommodating portion in which the control circuit board is housed,
wherein the first accommodating portion comprises a first opening that functions as an operation port for access from exterior of the circuit board box to the operation switch and a panel for covering the first opening,
wherein the frame is provided with a second opening at a position opposite to the first opening;
wherein the panel is exposed from the second opening to exterior of the frame, and
wherein a sealing portion is provided around the first opening,
wherein the first accommodating portion is integrally connected to the second accommodating portion at the first opening and protrudes in a direction toward the second accommodating portion from a plane in which the first opening is located,
wherein the first accommodating portion comprises: a first face provided with the operation port, a second face adjacent to the first face, and a third face opposite to the first face;
wherein the second accommodating portion is formed by the second face, the third face and an inner wall of the circuit board box,
wherein the inner wall of the circuit board box forms a part of an air passage wall; and
wherein the first accommodating portion protrudes into the second accommodating portion from the plane and is formed by faces that are not in contact with an inner wall of the second accommodating portion such that the first accommodating portion is substantially located inside the second accommodating portion.

### Claim 2 (depends on 1)

The ventilating device according to claim 1, wherein the sealing portion comprises:
an annular first rib extending from the panel in a direction toward the first accommodating portion and arranged on a periphery of an inner surface of the panel facing the first accommodating portion, and
an annular second rib arranged on an edge portion of the first opening opposite to the periphery of the panel and extending from the first accommodating portion in a direction toward the panel.

### Claim 3 (depends on 2)

The ventilating device according to claim 2,
wherein the circuit board box comprises a water directing rib surrounding the panel.

### Claim 4 (depends on 3)

The ventilating device according to claim 3,
wherein at least one surface of the water directing rib is a curved surface and extends to a position higher than a surface of the panel.

### Claim 5 (depends on 1)

The ventilating device according to claim 1,
wherein a plate-like baffle is disposed to extend on the circuit board box and configured to suppress air indrawn from the air inlet from hitting a wall surface of the circuit board box.

### Claim 6 (depends on 5)

The ventilating device according to claim 5,
wherein the air blowing unit has an air intake port configured to suck the air indrawn from the air inlet into the air blowing unit, and
wherein the circuit board box constitutes a wall of a part of an air passage communicating the air inlet with the air outlet, the baffle comprising an inclined surface configured to direct the air indrawn from the air inlet to the air blowing unit disposed at a downstream side.

### Claim 7 (depends on 1)

The ventilating device according to claim 1,
wherein interior of the first accommodating portion is visible from exterior of the frame through the first opening.

### Claim 8 (depends on 1)

The ventilating device according to claim 1,
wherein an indicator lamp is provided in the first accommodating portion and configured to indicate that a filtering screen unit provided at a downstream side of the air inlet is in need of replacement.

### Claim 9 (depends on 8)

The ventilating device according to claim 8,
wherein the control circuit board is configured to calculate the rotating speed based on a total amount of the air passing through the air blowing unit, and
wherein the indicator lamp is turned on or off if the total amount exceeds a threshold value.

### Claim 10 (depends on 7)

The ventilating device according to claim 7,
wherein an indicator lamp is provided in the first accommodating portion and configured to indicate that a filtering screen unit provided at a downstream side of the air inlet is in need of replacement.

### Claim 11 (depends on 10)

The ventilating device according to claim 10,
wherein the control circuit board is configured to calculate the rotating speed based on a total amount of the air passing through the air blowing unit, and
wherein the indicator lamp is turned on or off if the total amount exceeds a threshold value.

### Claim 12 (depends on 1)

The ventilating device according to claim 1,
wherein the second accommodating portion does not completely surround the first accommodating portion and separates the second face and the third face from the inner wall of the circuit board box.