CN205641484U - Electric water heating device - Google Patents

Abstract

The utility model discloses an electric water heating device, including being used for carrying out a plurality of heating mechanisms of heating to the aqueous water, a plurality of heating mechanisms arrange the setting in proper order be provided with the heat conduction bank of tubes between the heating mechanism, the heat conduction bank of tubes between the heating mechanism is linked together through the pipeline and constitutes the heating bank of tubes body that has an entrance point and an export, the entrance point of the heating bank of tubes body is connected with the pump, the pump is connected with the liquid storage pot, the exit end of the heating bank of tubes body is linked together with the liquid storage pot. This device is under ohmic heating's state, and the water among the storage device of water is derived, forces quick flow under the effect of pump in heating device in the predetermined pipeline, and heat that electric heating element produced passes through the pipeline wall and conducts to the water of the intraductal quick flow hot -water heating in with the liquid storage pot storage device of the water re -entering return water that is heated to mix with the water in the storage device of water. So move in circles, the temperature degree in the storage device of water reaches required temperature.

Description

Electric water heater

Technical field

This utility model relates to electric power energy control field, particularly relates to a kind of electric water heater.

Background technology

Compared with carrying out heating boiler with the mode of heating using fire coal, have to consider that electricity consumption is pacified with electric-heating water Complete i.e. Insulation Problems.At present, the mode of heating of electric heating tube is the most all used by the mode of electric-heating water.Work Be will to add heat pipe and be placed in water as state, i.e. the heat pipe that adds as hot body is surrounded by heated body water.Image Say and be properly termed as " water bag fire " formula mode of heating.The structure of electric heating tube is as shown in Figure 1, it can be seen that When heating the water in water tank, electric heating tube is by heating wire 11, insulating packing layer 13 and to add heat pipe Shell 12 3 part forms, and heating pipe shell 12 typically uses copper or stainless steel material, insulating packing layer 13 It is usually the exotic materials such as silica flour.The general diameter of electric heating tube is less, and inner space is the most limited, so The cooling surface area of its internal heater strip can only be made smaller, and the surface loading causing electrical heating wire 11 is the highest. Heat conductivility additionally, due to insulating packing layer 13 is the lowest, and heat-transfer rate is relatively slow, electric heating under normal operating conditions The operating temperature of silk is the highest.So the service life of electric heating tube is the shortest.

It addition, be to be placed in water tank directly heat adding heat pipe by the mode of electric heater for heating water.Water tank Sectional area is big, is difficult to quickly flow container internal water.Owing to aqueous phase flows fast for the outer surface adding heat pipe Spending the lowest by even zero, so having a strong impact on the heat-transfer rate adding between thermotube wall and water, making tube wall and water Between thermograde increase.Generally, the mean temperature of electric heater for heating water to 85 DEG C, heating The tube wall of pipe begins to produce vapor bubbles and begins to boil off, and makes equipment produce the anon-normal such as vibration, evaporation capacity increase Chang Xianxiang.While also result in adding tube surface fouling, have a strong impact on and add heat pipe service life.So large-scale electricity Equipment (such as with the equipment of the water heat accumulation) maximum heating temperature adding hot water only has 85 DEG C.Large-scale water is stored up Hot equipment, significantly reduces the quantity of heat storage of unit volume.

Secondly as the diameter of electric heating tube is less, the insulating properties of the packing material of heat conductive insulating such as silica flour Can be relatively low, so the insulation of the shell that the electrical heating wire in pipe is to adding heat pipe is difficult to be made bigger, cause electricity The voltage of the use adding heat pipe can only use relatively low voltage such as 220V or 380V.For the electricity that power is bigger Add hot water facility, such as large-scale water heat accumulation equipment and Large steam electric boiler etc., need to install jumbo transformation additional Device, thus the installation cost of equipment is greatly improved.

Utility model content

The problem existed according to prior art, the utility model discloses a kind of electric water heater, including using In the multiple heating arrangements heating aqueous water, the plurality of heating arrangements is arranged in order setting, in institute Stating and be provided with heat conduction bank of tubes between heating arrangements, the heat conduction bank of tubes between described heating arrangements is connected by pipeline Logical composition have an entrance point and one outlet heating bank of tubes body, the entrance point of described heating bank of tubes body with Pump is connected, and described pump is connected with fluid reservoir, and the port of export of described heating bank of tubes body is connected with fluid reservoir.

Described heating arrangements includes the insulation tube of multiple spread configuration, and described insulation tube is provided with heating element heater.

Fill between described insulation tube, between the pipeline of heat conduction bank of tubes and between heating arrangements and heat conduction bank of tubes There is heat filling.

Described fluid reservoir is provided with heat-insulation layer.

Owing to have employed technique scheme, this utility model provide a kind of heated body be enclosed in hot body it In the device of the i.e. electric-heating water of " fire Bao Shui " formula.Will separate with the storage device of water by the heater of water Open.When electrified regulation, the water in the storage device of water is exported, in heating under the effect of pump Forcing quickly flowing in the pipeline preset in device, the heat that heating produces is conducted to pipe by duct wall In the water of quick flowing the water in fluid reservoir is heated, heated water returns again to the storage device of water, and with Water mixing in the storage device of water.So move in circles, until the coolant-temperature gage in the storage device of water reaches Required temperature.

The technical program is the technical scheme producing hot water, utilizes this programme to can be used for producing steam.I.e. The storage device of water is arranged to hermetic container, and hermetic container top arranges steam outlet, the most airtight appearance Water supplement port, discharge outlet etc. are set on device.At position valve closings such as steam outlet, water supplement port, discharge outlet, When hermetic container is in air-tight state, when the water within hermetic container is heated above 100 DEG C, steam outlet Just can produce steam.The temperature of the water in change hermetic container, it is possible to produce the steam of different pressures.

This utility model is disclosed produce hot water and produce the device of steam be use common voltage such as 220V or The level power supplies such as 380V.By strengthening the heating element heater in heater and the spacing of default pipeline, and use High insulating property material makes the methods such as heating element heater exterior insulation pipe, can improve heating element heater to default pipe The insulating properties in road (the most over the ground), such that it is able to heating element heater is directly accessed high-voltage power supply such as 10KV or Person is higher, accomplishes high voltage direct-furnish.Which save transformator, reduce equipment installation cost.

Accompanying drawing explanation

In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, below will be to enforcement In example or description of the prior art, the required accompanying drawing used is briefly described, it should be apparent that, describe below In accompanying drawing be only some embodiments described in the application, for those of ordinary skill in the art, On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the structural representation of electric heating tube in prior art；

Fig. 2 is the structural representation of electric water heater in this utility model；

Fig. 3 is that the steam of electric water heater in this utility model produces schematic diagram；

Fig. 4 is the electric water heater of the present utility model i.e. schematic diagram of " fire bag fire " mode.

In figure: 1, electrical heating elements, 2, insulation tube；3, heat conduction bank of tubes, 4, pipeline, 5, pump, 6, Fluid reservoir, 7, hermetic container, 8, stop valve I, 9, stop valve II, 10, stop valve III, 11, add Heated filament, 12, heating pipe shell, 13, insulating packing layer, 17, hot body, 18, heat-conductive insulation filling, 19, water pipe, 100, heating arrangements.

Detailed description of the invention

For making the technical solution of the utility model and advantage clearer, below in conjunction with this utility model embodiment In accompanying drawing, the technical scheme in this utility model embodiment is carried out the most complete description:

A kind of electric water heater as shown in figs 2-4, including multiple heating arrangements 100, heating arrangements 100 for heating aqueous water, by multiple heating arrangements 100 spread configurations, heating arrangements 100 it Between be provided with heat conduction bank of tubes 3.Multiple heat conduction bank of tubes 3 by pipeline 4 be connected composition have an entrance point and The heating bank of tubes body of one outlet.Heating bank of tubes 3 entrance point be connected with pump 5, pump 5 again with fluid reservoir 6 It is connected.Prior art is the mode using water to be heated to be surrounded by thermal source heats, i.e. " water bag Fire " formula.And principle of the present utility model is mode i.e. " the fire bag using heating source to surround liquid water to be heated Water " mode heats.This device can not quickly flow greatly owing to tank cross-sectional is long-pending in water tank in view of water, And take full advantage of water under the effect of pump pipe in can be with swiftly flowing feature.Due to water high speed in pipe Flowing, greatly reduces the thickness of water viscous flow boundary region on inside pipe wall, improves heat-transfer rate.Meanwhile, Owing to flow is big, in pipe, in water heating process, temperature ascensional range is the least, can be by the water temperature in storage device Degree is heated to close to boiling temperature, without producing vaporization phenomenon.Thus it is existing not produce vaporization in stable heating Under the state of elephant, the coolant-temperature gage in storage device can be mentioned higher temperature, also solve owing to vaporization is produced Raw scale problems.Further, since heater is separated from heat-storing device, increase heating element heater Placing space, heating element heater can be with unrestricted choice shapes and sizes, and surface loading is optional the least, significantly carries The service life of high heating element heater.

Further, heating arrangements 100 includes the insulation tube 2 of multiple spread configuration, is arranged by multiple insulation tubes 2 Arrange, insulation tube 2 is provided with heating element heater 1, provides thermal source by heating element heater 1.

Further, between insulation tube 2, between the pipeline of heat conduction bank of tubes 3 and heating arrangements 100 with lead It is filled with heat filling between heat pipe row 3.So can increase heat-conductive characteristic.

Under duty: electrical heating elements 1 is switched on power, the heat that electrical heating elements 1 produces, passes through Heat filling and heat conduction bank of tubes 3 are heated by insulation tube 2.Starting pump 5, the water in fluid reservoir 6 is entered by pipeline Entering pump 5, enter in heat conduction bank of tubes 3 at a high speed through pipeline 4 after pump 5 pressurizes, heat filling passes through heat conduction The conduction of heat of bank of tubes 3 tube wall, heats swiftly flowing water in heat conduction bank of tubes 3.Heated flow at high speed Water by pipeline return in fluid reservoir 6 with original water mixed heat transfer, thus the water in fluid reservoir 6 is added Heat.Move in circles, until the water in fluid reservoir 6 is heated to 95 DEG C, cut off electrical heating elements 1 power supply, Close pump 5, complete the water of heating for standby.

Electric water heater the most disclosed in the present application can produce steam after improving, as it is shown on figure 3, On the basis of electric water heater, fluid reservoir 6 hermetic container 7 is replaced, pump 5 and hermetic container 7 It is connected.The outlet of heat conduction bank of tubes 3 is connected with hermetic container 7 top.Set at hermetic container 7 top Put steam port and stop valve II9, water supplement port and stop valve III 10 are set on the top of hermetic container 7, airtight The bottom of container 7 arranges discharge outlet and stop valve I 8.

The duty of steam production plant is as follows: first water supplement port and stop valve III 10 are opened, to airtight appearance Moisturizing in device 7, water level to 2/3rds height.Electrical heating elements 1 is switched on power, electrical heating elements 1 The heat produced, is heated heat filling and heat conduction bank of tubes 3 by insulation tube 2.Start pump 5, hermetic container Water in 7 enters pump 5 by pipeline, enters at a high speed in heat conduction bank of tubes 3 through pipeline 4 after pump 5 pressurizes, The heat filling conduction of heat by heat conduction bank of tubes 3 tube wall, will heat swiftly flowing water heating in bank of tubes 3. Heated swiftly flowing water by pipeline return in hermetic container 7 with original water mixed heat transfer, thus The water of hermetic container 7 is heated, moves in circles.Until the water in hermetic container 7 is heated to 133 DEG C, close Closing container 7 internal pressure is that 0.3MPa. opens steam port and stop valve II 9, it is possible to supply 0.3MPa. steams Vapour.During shutdown, the power supply of power-off heating element heater 1, close pump 5.

The above, only this utility model preferably detailed description of the invention, but protection model of the present utility model Enclose and be not limited thereto, the technology model that any those familiar with the art discloses at this utility model In enclosing, conceive in addition equivalent or change according to the technical solution of the utility model and utility model thereof, all Should contain within protection domain of the present utility model.

Claims (4)

1. an electric water heater, it is characterized in that: include the multiple heating arrangements (100) for aqueous water is heated, the plurality of heating arrangements (100) is arranged in order setting, heat conduction bank of tubes (3) it is provided with between described heating arrangements, heat conduction bank of tubes (3) between described heating arrangements (100) is connected by pipeline (4) to constitute and has an entrance point and the heating bank of tubes body of an outlet, the entrance point of described heating bank of tubes body is connected with pump (5), described pump (5) is connected with fluid reservoir (6), the port of export of described heating bank of tubes body is connected with fluid reservoir (6).

Electric water heater the most according to claim 1, is further characterized in that: described heating arrangements (100) includes the insulation tube (2) of multiple spread configuration, and described insulation tube (2) is provided with heating element heater (1).

Electric water heater the most according to claim 2, is further characterized in that: be filled with heat filling between described insulation tube (2), between the pipeline of heat conduction bank of tubes (3) and between heating arrangements (100) and heat conduction bank of tubes (3).

Electric water heater the most according to claim 1, is further characterized in that: described fluid reservoir (6) is provided with heat-insulation layer.