CN2255017Y

CN2255017Y - Electric water heater

Info

Publication number: CN2255017Y
Application number: CN 96227224
Authority: CN
Inventors: 方和源; 连邦兴; 徐兆龙; 王通进
Original assignee: HAI-ER MICROWAVE PRODUCTS Co Ltd QINGDAO
Current assignee: HAI-ER MICROWAVE PRODUCTS Co Ltd QINGDAO
Priority date: 1996-02-05
Filing date: 1996-02-05
Publication date: 1997-05-28
Anticipated expiration: 2006-02-05

Abstract

The utility model relates to an electric water heater, which comprises a barrel body which is composed of a casing, a heat insulation layer, and an internal container, wherein a heating pipe, a temperature measuring tube, a temperature controller, a water inlet pipe and a water outlet pipe are arranged in the barrel body. The utility model is characterized in that a dry combustion temperature sensing sheet is arranged at the bottom of the heating pipe, and the lower surface of the dry combustion temperature sensing sheet is attached to the inner surface of a flange disc whose outer surface is provided with a dry combustion temperature controller. The utility model has the advantages that because a special dry combustion preventing temperature controller is arranged, the power supply is cut off immediately when the phenomenon of no water happens. The electric heating tube is protected from damage, a power supply wire is connected rapidly, conveniently and firmly, and the installation process is simplified.

Description

Electric heater

The utility model belongs to electric heating shower, says so in more detail to the improvement of existing electric heating shower.

Electric heating shower has the multiple form of the composition at present.For prevent dry combustion method and water temperature too high be to adopt temperature controller to realize, and temperature tube is because far away from electric heating tube, when anhydrous dry combustion method, will be by gas heat-transfer to temperature tube, often at temperature controller as yet not during powered-down, electric heating tube is burnt out, and this mainly is not to be provided with due to the special-purpose dry heating temperature controller.In addition, the type of attachment of power line is to adopt electric wire to be wrapped on the binding post of 3mm, uses nut compressing again, this is that the shortcoming of the mode of connection is technological operation trouble (needing wire stripping etc.), electric wire is easily extruded when pressing, and the binding post intensity of 3mm diameter is also limited, is easy to twist into two parts.

The purpose of this utility model is in order to solve above-mentioned existing problems, a kind of electric heater to be provided.It can realize preventing anhydrous dry combustion method, and purposes such as power line type of attachment novelty, easy accessibility take place the phenomenon of damaging heating tube.

In order to achieve the above object, the utility model comprises the staving that is made of shell, heat-insulation layer, inner bag, heating tube, temperature tube, temperature controller, inlet tube and outlet tube are housed in staving, it is characterized in that bottom the heating tube dry combustion method thermal sensitive piece being housed, the bottom surface of this dry combustion method thermal sensitive piece is attached on the inner surface of ring flange, on the outer surface relevant position of ring flange a dry heating temperature controller is housed.

The connection of power line is to adopt sheet inserted sheet and the inserted sheet folder form that is sleeved on the sheet inserted sheet.

Advantage of the present utility model is: owing to be provided with special-purpose anti-dry heating temperature controller, when appearance is anhydrous, can cut off the electricity supply immediately, the protection electrothermal tube is not damaged, and power line connects quick and convenient and firm, has simplified mounting process.

Fig. 1 is a cutaway view of the present utility model.

Fig. 2 is the pie graph of heating tube assembly of the present utility model and dry heating temperature controller.

Fig. 3 is circuit theory diagrams of the present utility model.

Fig. 4, Fig. 5, Fig. 6 are that the master of the utility model inserted sheet looks, a left side is looked, vertical view.

Fig. 7, Fig. 8 are that the master of the utility model inserted sheet folder looks, vertical view.

Fig. 9, Figure 10 are inserted sheet and inserted sheet folder type of attachment profile.

(1) shell; (2) heat-insulation layer; (3) inner bag; (4) temperature tube; (5) heating tube; (6) ring flange; (7) temperature controller; (8) dry heating temperature controller; (9) inlet tube and outlet tube; (10) power line; (11) water inlet pipe water fender; (12) dry combustion method thermal sensitive piece; (13) inserted sheet; (14) inserted sheet folder.

Referring to Fig. 1, Fig. 2, at electric heating tube (5) bend pipe middle part cutting ferrule one dry combustion method thermal sensitive piece (12) (KSD type), its bottom surface closely is attached to the inner face of ring flange (6), and the outer surface corresponding at ring flange (6) is equipped with a dry heating temperature controller (8) (KDS type).Under the normal heating situation, the anti-dry element does not disconnect, and the probe of water heater temperature controller (7) is in temperature tube (4), this temperature tube (4) is in the higher water temperature of inner bag (3) district, when water temperature reached the highest limit temperature, temperature controller (7) disconnected, and heating tube (5) stops heating.Anti-dry heating temperature controller this moment (8) does not disconnect.If it is anhydrous or the water yield is few in the inner bag (3); heating tube (5) is not under water fully; in the case; heating tube (5) temperature rises rapidly; by the dry combustion method thermal sensitive piece (12) that links to each other with heating tube (5) temperature is sensed anti-dry heating temperature controller (8) rapidly, and reach limit Wen Wendu, at this moment anti-dry heating temperature controller (8) opens circuit; thereby stop heating, protected heating tube (5) not to be damaged.

Referring to Fig. 3, this is circuit theory diagrams, wherein, and BT: temperature controller; HT: indicator lamp; EH: electric heating tube; KSD: dry heating temperature controller; L: brown line; N: blue colo(u)r streak; E: yellow and green.

Referring to Fig. 4, Fig. 5, Fig. 6, this is the male blade (13) of power line (10), is two plates that are arranged in parallel being made by copper sheet.

Fig. 7, Fig. 8, this is the inserted sheet folder (14) that plugs with inserted sheet (13), its two split semicircles play the effect that clamps with inserted sheet (13).

Referring to Fig. 9, Figure 10, this is that inserted sheet (13) and inserted sheet press from both sides the plug-in mounting type of attachment of (14), in installation procedure, inserted sheet need only be pressed from both sides (14) and be inserted in the connection that just can finish power line (10) in the inserted sheet (13), its characteristics are quick, and are convenient, it is firm to connect self-locking, is fit to multi-thread connection.

Claims

1, a kind of electric heater, it comprises the staving that is made of shell (1), heat-insulation layer (2), inner bag (3), heating tube (5), temperature tube (4), temperature controller (7), inlet tube and outlet tube (9) are housed in staving, it is characterized in that one dry combustion method thermal sensitive piece (12) being housed in heating tube (5) bottom, the bottom surface of this dry combustion method thermal sensitive piece (12) is attached on the inner surface of ring flange (6), and a dry heating temperature controller (8) is housed on the outer surface relevant position of ring flange (6).

2, electric heater according to claim 1, the connection that it is characterized in that power line (10) are to adopt sheet inserted sheet (13) and the inserted sheet that is sleeved on the sheet inserted sheet (13) presss from both sides (14) form.