CN2221178Y - Safety directly-heating electrothermal water heater - Google Patents

Abstract

The utility model relates to a safety directly-heating electrothermal water heater. The lower part of an insulating core (1) with a water passage cavity (4) is provided with a metal inner cover (9) which is provided with a water outlet hole (8) on bottom and a metal outer cover (1) which is provided with a plurality of water outlet holes (12) on upper side. The lower part of a cavity (14) between the outer cover (10) and an insulating coating (11) is provided with a sheet metal (17) with a plurality of water outlet holes (16). Both ends of the sheet metal (17) are respectively connected with a metal wire (18). Two metal wires (18) penetrate out from the bottom of the insulating coating (11), upward extend along an outer shell, penetrate through the insulating core (1) and are connected with each other. The external of the outer cover (10) is provided with the insulating coating (1) with a plurality of spraying holes (15) at bottom. Two connecting wires (5) and (6), passing through the insulating core (1), are respectively connected with the inner cover (9) and the outer cover (10).

Description

Safety type directly-heated electric heater

The utility model relates to a kind of direct-heating type electric heater, particularly a kind of directly-heated electric heater that in use has safety guard.

Existing directly-heated electric heater in use exists many unsafe factors: zero line and live wire can not exchange in the use, if the user will be short-circuited because of carelessness the two poles of the earth wrong plug of plug; And if the user is not connected on ground wire on the running water pipe, the water that will cause water heater to flow out is charged, very dangerous; In addition, the zero line of existing water heater directly is connected with ground wire, and not only ground wire does not have protective effect, and easily produces leakage current, and therefore in the place of using earth leakage protective device, existing water heater can't be worked, thereby has brought inconvenience to the user.

The purpose of this utility model provides a kind of safety type electric heater, and it can prevent the existing in use incident danger of electric heater effectively.

The purpose of this utility model is achieved in that in existing direct-heating type electric heater's inside increases by a safety device, and it is a pair of interconnective conductive member (can be sheet metal, wire, wire netting and other non-metallic conducting material).The existence of this device can be exchanged zero line and live wire in use, even ground wire is not connected on the running water pipe, also Danger Electric shock risk can not take place; In addition, this device separates the zero line of water heater and ground wire, has avoided the generation of leaky, but thereby using under the situation of earth leakage protective device also operate as normal, thereby solved the problem that existing electric heater exists easily.

Advantage of the present utility model is: zero line and live wire can directly exchange in the use, and the user can not cause short circuit because of the two poles of the earth wrong plug of plug, in case carelessness, unearthed line can not caused danger yet; Zero line separates with ground wire, and ground wire performance protective effect can not produce leakage current, uses as usual in the place that earth leakage protective device is housed.

Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof:

Figure one is a safety type directly-heated electric heater overall structure profile;

Figure two is the safety device schematic diagram.

The primary structure of directly-heating type water heater is: the insulation core body (1) that water flowing chamber (4) are arranged, there are pipe Luo line (3) and regular hexahedron (2) in its upper end, its lower end is taken water hole (7) out of, the metal inner cover (9) of taking water hole (8) out of is spun on the insulation core body (1), the upper end also is spun on the insulation core body (1) with the metal housing (10) of a plurality of apopores (12), and most external is also to be spun on the insulation core body (1) with the insulating coating of a plurality of spray apertures (15) (11).Between metal inner cover (9) and the metal housing (10) cavity (13) is arranged, between metal housing (10) and the insulating coating (11) cavity (14) is arranged.

During assembling, earlier with a lead (5) of having shelled the long insulated hull of about 3cm pass by the inner end draw endoporus (19), screw metal inner cover (9) then, make it closely to contact with lead (5); Another root lead (6) is used and is passed endoporus (20) with quadrat method and be connected with metal housing (10); Outer circumferential edge at the sheet metal of taking water hole (16) out of (17) connects two one metal wires (18) symmetrically, after passing insulating coating (11) bottom, two one metal wires (18) to the bilateral symmetry bending, make the bottom of the as far as possible close insulating coating (11) of sheet metal (17), make wire (18) be adjacent to outside in insulating coating (11) as far as possible, at last wire (18) is passed insulation core body (1), wire (18) is connected in the lining, water flowing chamber (4) of insulation core body (1).All poorly sealed nose ends are obturaged with epoxy resin, and two leads (5) (6) connect plug.

Claims (2)

1, a kind of safety type directly-heated electric heater is characterized in that: at the inner additional safety device of water heater, be made of a pair of interconnective conductive member, be communicated with the water inlet end and the water side of water heater simultaneously.

2, safety type directly-heated electric heater according to claim 1 is characterized in that: conductive member can be made of sheet metal, wire, wire netting and other non-metallic conducting material.

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