CN2484523Y

CN2484523Y - Electric water heater

Info

Publication number: CN2484523Y
Application number: CN 01202482
Authority: CN
Inventors: 袁毅权
Original assignee: LANXUAZHANG INTERNATIONAL INVESTMENT CO Ltd
Current assignee: LANXUAZHANG INTERNATIONAL INVESTMENT CO Ltd
Priority date: 2001-01-03
Filing date: 2001-01-03
Publication date: 2002-04-03
Anticipated expiration: 2011-01-03

Abstract

A water heater 10 has an inner water tank 16 fastened at the inner of an outer water tank 17; each water tank has a controllable electric heating element 18 and a controllable electric heating element 19. Hot water is supplied to a water tap from the inner water tank 16 and heated water is supplied to a sealed central heating and heating supply system from the outer water tank 17. The water tank 16 and the water tank 17 are connected with each other and heat the water to different needed temperature. Comparison with a general or single water heating tank that adopts latest techniques, the electric water heater has no large heat loss.

Description

Electric heater

The utility model relates to a kind of electric heater, especially, relates to the electric heater of hot water to the central heating system of depotition cock and sealing that flow is provided.

For in single container, carrying out water heating and providing circulating water and hot water known to central heating system.Usually, the hot water that being respectively flow hot-water heating system and central heating system provides is to keep separately, and it is second loop that places of hot water of flowing that the hot water that provides for central heating system places first loop.Certain part at device is provided with a heat exchanger, so heat can exchange between first and second hot-water returns.

The heat exchanger of spiral cast is fixed on traditionally, as the boiler in the toilet ventilation cupboard.Suppose helical-coil type heat exchanger is fixed in the single container, water is also known in this situation of being supplied with central heating system by electrical heating.Under any circumstance, though can set some condition so that determine that earlier to the hot water that flows still be the order of priority that hot water is provided to central heating system earlier, but generally speaking, must heat a large amount of water, although that is unwanted concerning present use.For example, heating system of central authorities is unwanted in summer, but obtains the hot water supply of flowing in order to quicken, and the water of supplying with central heating also must heat, or is heated to a certain degree.This is owing to will carry out some heat exchange in essence, this means that water in first and second loops all must heat to be heated in prior-art devices in other words.

Target of the present utility model is to overcome or can reduce this problem at least.

According to the utility model, one electric heater is provided, has been used for providing simultaneously the hot water and provide hot water circuit of flowing, it is characterized in that in the central heating system of sealing, described water heater has a sealing inner water tank that is fixed in the outer water tank, and each water tank has separately independently heating element heater.

Best, the sealing inner water tank is connected in the tap of the mobile hot water of at least one supply;

The capacity of described sealing inner water tank is 1/4th of an outer water tank capacity;

Described sealing inner water tank is fixed on the place near the outer water tank top;

Thereby described heating element heater is to control the heating element heater that the heating of each water tank can be carried out according to auto-programming respectively.

To and give with reference to the accompanying drawings by example to introduce according to electric heater of the present utility model, wherein:

Fig. 1 is the schematic diagram that flow hot water and central heating system are provided by water heater; With

Fig. 2 is the schematic diagram of this water heater.

With reference to the accompanying drawings, at Fig. 1, this system comprises providing and flows hot water and supply with the water heater 10 of hot water to central heating system.Whole system except water heater 10, traditionally or at present, all is the version of being familiar with basically.Whole system will be born water main pressure, so hot water tap's current will bear the supply pressure of water system.This and retaining cistern water supply system form contrast.But should be known in that embodiment of the present utility model can provide the cistern water supply system or is suitable for using in the place that is requiring to use retaining cistern water supply system.

Know by right and wrong Changshu for this professional those of ordinary skill for the parts of system shown in Figure 1.According to the equipment of prior art, be provided with first loop of sealing, it gets back to water heater then from many fin 11 of water heater 10 extend pasts (figure only demonstrates a fin).Used an electric water pump 12 to increase or controlled hot water flowing in first loop.Expansion and water injection equipment comprise traditional moisturizing and expansion tank 13.Second loop comprise one from main line 14 to water heater 10 water filling inlet tube and provide hot water as requested to a plurality of depotition cocks 15 (only showing a tap).

At Fig. 2, water heater 10 has the inner water tank 16 of less sealing and centers on the outer water tank 17 of inner water tank.

Electrical heating elements

18 and 19 is fixed in two water tanks, and the water in the case is carried out the selectivity heating.Water heater is surrounded by heat insulation polyester 20 so that avoid hot water to lose temperature.

Through pipeline 21 (from the main water supply system of Fig. 1) to water tank 16 water fillings and as leading under the effect of water pressure of illustrating previously, by pipeline 22 on request to leading 15 hot-water supplies.Water tank 16 is provided with a temperature/pressure relief valve 23.Water tank 17 has an inlet attack 24, is used for receiving the warm water that flows through fin 11 (scheming only to show a fin).Water tank 17 has an outlet connection 26, be used to provide by the hot water of heating element heaters heating in the water tank 17 not only to a central heating tube also to a point 27, central authorities' heating pipe is connected with expansion tank with central heating water filling, thereby the cold water from central heating water injecting tank can mix at point 27, becomes the asymmetric three-way pipe that hot water flows to two standards.Water tank 17 discharges the device 25 of central heating hot-water heating system formula in addition.

During use, the water in the

water tank

16 and 17 can heat selectively by the power supply of control heating element heater 18 and 19.It can be placed under the control of timer or cyclelog in a well-known manner.A kind of important feature of the utility model embodiment is, can fully control independently in same hot water body the hot water mode of heating of flow hot-water heating system and central heating system.That is to say, if only need flow hot water, the water of that petty water tank 17 just can stop to be heated.Certainly the heat-conducting layer by wall between water tank 16 and the water tank 17 has certain heat transfer, but this heating is actually heat loss, is very little.For example, with the heat loss of the heating system of prior art relatively, this heating or heat loss are inappreciable.In addition, under the situation that the heater that has only water tank 17 is connected, whole water heater all will be heated.That is to say, water tank 16 is also by indirect or heat transfer, and mobile hot water also has supply.If yet when the heater that has only water tank 16 was switched on, usually the water of water tank 17 can not be heated to the degree of any high temperature.

If only need equally central heating system, the heating element heater of water tank 16 will can not connected.Yet, should know that at this moment all

heating element heaters

18 and 19 can be connected when needs carry out Fast Heating to central heating system or mobile hot-water heating system.Take place and when not needing central heating system, will cause certain heat loss significantly in this situation.If but not connection of pump 12, heat loss is still a very low level.

In fact, have the separately water heater of two water tanks of heating element heater by providing, water heater of the present utility model becomes a reality multipurpose and high thermal efficiency hot water supply integrated system.In addition this water heater can use or be installed in existing and at widely used hot water supply system.

The capacity of water tank 16 preferably has only the about 1/4th of water tank 17 capacity, and is fixed on the place of the inside of water tank 17 near its top.

Claims

1. an electric heater is used for providing simultaneously the hot water and provide hot water circuit in the central heating system of sealing of flowing, and it is characterized in that described water heater has a sealing inner water tank that is fixed in the outer water tank, and each water tank has separately independently heating element heater.

2. electric heater according to claim 1 is characterized in that, the sealing inner water tank is connected in flow tap of hot water of at least one supply.

3. described electric heater as claimed in claim 1 is characterized in that, the capacity of described sealing inner water tank is 1/4th of an outer water tank capacity.

4. described electric heater as claimed in claim 2 is characterized in that, the capacity of described sealing inner water tank is 1/4th of an outer water tank capacity.

5. electric heater according to any one of claims 1 to 4 is characterized in that, described sealing inner water tank is fixed on the place near the outer water tank top.

6. electric heater according to any one of claims 1 to 4 is characterized in that, thereby described heating element heater is to control the heating element heater that the heating of each water tank can be carried out according to auto-programming respectively.

7. as electric heater as described in the claim 5, it is characterized in that, thereby described heating element heater is to control the heating element heater that the heating of each water tank can be carried out according to auto-programming respectively.