TWI693365B - Live detection device applied to the shell of kitchen ventilator - Google Patents

Abstract

A live detection device applied to the shell of kitchen ventilator, which includes a warning unit, a common grounding element and a test element, which are electrically connected to one another to form the conduction circuit, and the common grounding element is electrically connected to a shell of the kitchen ventilator, such that when the tester comes into contact with the detector, if the shell is charged, it can direct the tester through the conduction circuit, the voltage formed when the conduction circuit is on is larger than that of the warning unit, so as to cause a warning unit to shine, achieving the purpose of detecting whether the shell has an inductive charge or leakage charge after installation and further ensuring the safety of the user.

Description

Charge detection device applied to housing of range hood

The invention relates to an electric power detection device, in particular to a charged detection device applied to a housing of a range hood.

The cabinet of the range hood is often charged due to various situations. Generally, the charge on the cabinet of the range hood needs to be derived through the ground wire (G) of the line plug of the range hood. However, if the outlet Poor grounding conditions, the socket does not provide grounding holes, cheap operation during construction, or other reasons that the hood of the exhaust hood is still charged, it may cause electric shock accidents, and also cause safety concerns, the following list There are three kinds of cases where the case may be charged;

First, leakage of electric wires or electrical appliances inside the range hood or peripheral electrical appliances will cause the range hood case to carry a leakage charge. In this case, if the grounding condition is not good, the range hood case will have If a large amount of leakage charge is not detected by the detection device, it will put the user at a great risk and even endanger life.

Second, the inductance of the control circuit and electrical appliances in the range hood is induced by induction. In this case, if the grounding condition is not good, the range hood chassis will carry an unequal amount of inductive charge. There is a suitable detection device to warn the user in real time, the aforementioned inductive charge will be equipped with a heart rhythm for the body Users of medical microelectronic devices such as regulators have an impact, and in more serious cases, they are more likely to cause medical microelectronic devices to fail;

Third, at present, the Bureau of Standards and Inspections (BSMI) implements electromagnetic compatibility inspection of the range hood to prevent the radio wave radiation of electrical products and cause mutual interference between communication equipment or electronic products. Taking the range hood as an example, it is necessary The power filter is installed. Therefore, in order to make the product comply with the aforementioned inspection, the electromagnetic wave noise of the power filter in the range hood is bypassed to the range hood case. In other words, the electronic circuit will be The range hood casing discharges directly. In this case, if the grounding condition is not good, the range hood casing will carry a discharge charge, putting the user at risk.

In summary, there is a need for a detection device to detect whether the housing of the range hood is charged, so that users can immediately find abnormal conditions, prevent electric shock in advance, and find the source of the problem as early as possible to solve the grounding problem. .

The invention provides an electrification detection device applied to a housing of a range hood, whose main purpose is to be able to detect whether the cabinet of the range hood has an inductive charge or a leakage charge after installation.

To achieve the foregoing purpose, the present invention is applied to the electrification detection device of the range hood housing, which includes: a warning unit for displaying a light-emitting state or a non-lighting state; and a common grounding member electrically connected to the warning unit, the The common grounding member is made of conductive material, and the common grounding member is electrically connected to the housing of the range hood; a detection member is electrically connected to the warning unit, and the detection member is made of conductive material, and the detection member For a tester to touch; Thereby, when the detector touches the detection element to electrically connect the common grounding element, the warning unit and the detection element, the warning unit is in a lighted state, otherwise, when the common grounding element, the warning unit and the detection element are not When electrically conductive, the warning unit is in a non-luminous state.

In this way, it is possible to detect whether the cabinet of the range hood has an inductive charge or a leakage charge after installation, and further ensure the safety of the user.

10: Warning unit

20: Common grounding piece

30: Test piece

51, 70: Insulation board

511: first side

512: Second side

52: Metal case

521: Piercing

53: Metal base

531: accommodate recess

60: Magnetic parts

M: Range hood housing

FIG. 1 is a schematic diagram of a first embodiment of a charging detection device applied to a housing of a range hood according to the present invention.

FIG. 2 is a schematic diagram of a second embodiment of a charging detection device applied to a range hood housing of the present invention.

FIG. 3 is a schematic diagram of a third embodiment of a charging detection device applied to a housing of a range hood according to the present invention.

FIG. 4 is a schematic diagram of a fourth embodiment of a charging detection device applied to a range hood housing of the present invention.

FIG. 5 is a schematic diagram of a fifth embodiment of a charging detection device applied to a housing of a range hood according to the present invention.

The present invention is applied to the first embodiment of the electrification detection device of the range hood housing. Please refer to FIG. 1, which includes: a warning unit 10 for displaying a light-emitting state or a non-lighting state as a judgment warning Purposes; a common grounding member 20, electrically connected to the warning unit 10, the common grounding member 20 is made of conductive material, the common grounding member 20 is also electrically connected to a row of hood housing M; a detection The component 30 is electrically connected to the warning unit 10. The detection component 30 is made of a conductive material. The detection component 30 is provided for a tester to touch.

In this way, if the range hood housing M is charged, when the detector touches the detection member 30, the charge is transmitted to the detection member 30 through the common grounding member 20 and the warning unit 10 to form an electronic circuit. The warning unit 10 emits light to warn the detector; on the contrary, if the range hood housing M is not charged, when the detector touches the detection member 30, there is no voltage drop to drive the warning unit 10 to emit light.

In this embodiment, the turn-on voltage of the aforementioned warning unit 10 is greater than 1.2V.

In the second embodiment of the charging detection device applied to the housing of the range hood according to the present invention, please refer to FIG. 2, the warning unit 10 is installed on an insulating plate 51 which has a relatively A side 511 and a second side 512, and a metal housing 52 is located on the first side 511, a metal base 53 is mounted on the second side 512, the metal base 53 and the range hood housing M are electrically The common grounding member 20 is electrically connected to the metal base 53, and the detecting member 30 is electrically connected to the metal shell 52.

Preferably, the metal housing 52 is generally in the form of a cover, and is covered on the first side 511 of the insulating plate 51. The metal housing 52 has a perforation 521 through which the warning unit 10 is exposed. The metal shell 52, thereby the metal shell 52 can protect the insulating plate 51 to prevent the insulating plate 51 from being damaged.

Preferably, the metal base 53 further has at least one accommodating recess 531. At least one magnetic member 60 is disposed in the accommodating recess 531. The magnetic member 60 is used to attract the range hood housing M to make the metal The base 53 is electrically connected to the range hood housing M.

Preferably, the insulating board 51 may be a printed circuit board.

In this embodiment, the detector only needs to touch the metal casing 52 to achieve the detection effect.

The present invention is applied to the third embodiment of the electrification detection device of the range hood housing, please refer to FIG. 3, the difference from the second embodiment is that the metal base 53 is directly welded to the range hood housing M to electrically connect the metal base 53 to the range hood housing M.

In other embodiments, the metal base 53 may be coupled to the range hood housing M through screw locks or other methods to electrically connect the metal base 53 to the range hood housing M.

The present invention is applied to the fourth embodiment of the electrification detection device of the range hood housing. Please refer to FIG. 4. The warning unit 10 is installed on the insulating plate 51. The insulating plate 51 has the first The side surface 511 and the second side surface 512, the metal casing 52 is located on the first side surface 511, the common grounding member 20 is located on the second side surface 512 and is directly attached to the range hood housing M, the detection member 30 and The metal shell 52 is electrically connected.

Preferably, the metal housing 52 is generally in the form of a cover and is covered on the first side 511 of the insulating plate 51. The metal housing 52 has a through hole 521 through which the warning unit 10 is exposed to the metal The outer shell 52, thereby the metal outer shell 52 can also protect the insulating plate 51 to prevent the insulating plate 51 from being damaged.

Preferably, the insulating board 51 may be a printed circuit board. The printed circuit board is often abbreviated as PCB (Printed circuit board) or PWB (Printed wire board), and a metal coating may be laid on the printed circuit board to allow the test piece 30 and the common ground 20 can be electrically connected.

The present invention is applied to the fifth embodiment of the electrification detection device of the range hood housing. Please refer to FIG. 5. The warning unit 10 is installed on an insulating plate 70. The insulating plate 70 is embedded in the exhaust line. In the range hood housing M, the common grounding member 20 is electrically connected to the range hood housing M, the detecting member 30 is embedded in the insulating plate 70, and the detecting member 30 is exposed on the insulating plate 70 for Let the tester touch.

In a preferred embodiment, the detection element 30 can be the housing of the warning unit 10.

As can be seen from the foregoing, in each embodiment of the present invention, the detection element 30, the warning unit 10, and the common grounding element 20 are electrically connected to form a conduction circuit, and the common grounding element 20 and the range hood housing M Electrical connection, so that when the detector touches the detection member 30, if the range hood housing M is charged, it can be guided to the detector through the aforementioned conduction circuit, and the voltage drop formed when the conduction circuit is turned on is greater than the warning The conducting voltage of the unit 10 makes the warning unit 10 emit light to achieve the purpose of detecting whether the cabinet of the range hood is charged with inductance or leakage after installation, and further ensure the safety of the user.

In addition, the turn-on voltage of the warning unit 10 is greater than 1.2V, the rated current of the warning unit 10 is 20mA, and the warning unit 10 only needs a driving current greater than 0.02mA to be turned on, so that weaker inductive charges can be detected Or leakage charge.

It is worth mentioning that the electrification detection device applied to the housing of the range hood is more able to distinguish the charge carried on the cabinet of the range hood as inductive charge or leakage charge, because the electric charge of the inductive charge is much smaller than the leakage charge The electric quantity is that, when the charge carried on the range hood casing M is an inductive charge, the current is smaller, so the brightness of the warning unit 10 is lower, and the inductive charge carried on the range hood casing M will also be Because the detection action is consumed, on the contrary, when the charge carried on the range hood housing M is a leakage charge, the current is larger, so the brightness of the warning unit 10 is higher, and the leakage charge is leakage of other electrical appliances The amount of electricity generated is constant.

10: Warning unit

20: Common grounding piece

30: Test piece

51: Insulation board

511: first side

512: Second side

52: Metal case

521: Piercing

53: Metal base

531: accommodate recess

60: Magnetic parts

M: Range hood housing

Claims (10)

An electrification detection device applied to a housing of a range hood includes: a warning unit for displaying a light-emitting state or a non-lighting state; a common grounding member electrically connected to the warning unit, and the common grounding member is made of conductive material Made, the common grounding member is electrically connected to the housing of the range hood; a detection member is electrically connected to the warning unit, the detection member is made of conductive material, and the detection member is provided for a detector Touch; thereby, when the detector touches the detection element to electrically connect the common grounding element, the warning unit and the detection element, the warning unit assumes a luminous state, otherwise, when the common grounding element, the warning unit and the detection element When the device is not electrically conductive, the warning unit is in a non-luminous state. As described in item 1 of the scope of the patent application, the electrification detection device applied to the housing of the range hood, wherein the turn-on voltage of the warning unit is greater than 1.2V, and the drive current of the warning unit is greater than 0.02mA. The charging detection device applied to the housing of the range hood as described in item 1 of the patent application scope, wherein the warning unit is installed on an insulating plate having a first side and a second side opposite to each other There is also a metal shell on the first side, a metal base is installed on the second side, the metal base is electrically connected to the range hood housing, the common grounding member is electrically connected to the metal base, the The detection element is electrically connected with the metal shell. As described in item 3 of the scope of the patent application, the electrification detection device applied to the housing of the range hood, wherein the metal casing is in the form of a cover body and is provided on the first side of the insulating plate, the metal casing has a Through the perforation, the warning unit is exposed to the metal casing through the perforation. The charged detection device applied to the range hood housing as described in item 3 or item 4 of the patent application scope, wherein the metal base further has at least one accommodating recess, and at least one magnetic member is disposed in the accommodating recess Inside, the magnetic member is provided to attract the range hood housing. The electrification detection device applied to the range hood housing as described in item 3 or 4 of the patent application scope, wherein the metal base is directly welded to the range hood housing. The charging detection device applied to the housing of the range hood as described in item 1 of the patent application scope, wherein the warning unit is installed on an insulating plate having a first side and a second side opposite to each other A metal shell is located on the first side, the detection element is electrically connected to the metal shell, and the common grounding element is directly attached to the housing of the range hood. As described in Item 7 of the patent application range, the electrification detection device applied to the housing of the range hood, wherein the metal casing is generally in the form of a cover body and is provided on the first side of the insulating plate, the metal casing has a Through the perforation, the warning unit is exposed to the metal casing through the perforation. As described in item 3 or 8 of the patent application range, the electrification detection device applied to the housing of the range hood, wherein the insulating plate is a printed circuit board. As described in item 1 of the scope of the patent application, the electrification detection device applied to the housing of the range hood, wherein the warning unit is installed on an insulating plate, the insulating plate is embedded in the housing of the range hood, the The detecting element is embedded in the insulating plate, and the detecting element is exposed on the insulating plate.

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