CN2147437Y

CN2147437Y - Automatic circulation water heating furnace

Info

Publication number: CN2147437Y
Application number: CN 92245447
Authority: CN
Inventors: 王和
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-12-30
Filing date: 1992-12-30
Publication date: 1993-11-24
Anticipated expiration: 2002-12-30

Abstract

The utility model relates to an automatic circulation water heating furnace in a heating system. The utility model adopts a spiral plate type heat exchanger which is installed above the outer side of the casing of the water heating furnace; the water inlet and the water outlet in countercurrent flow can exchange heat at the outer side of the furnace body, which can realize the heat exchange ability and produce sufficient and stable dynamic head, and the hot water can automatically cycle in the heating system. The utility model has the advantages of novel structure, safe use and energy saving.

Description

Automatic circulation water heating furnace

The utility model is a kind of improved water heater that hot water is circulated in heating system automatically.

The water heater or the boiler of existing heating system, the circulation of hot water, usually adopt the circulation of mechanical cycles or gravity, in order to realize the Natural Circulation of hot water, developed " potential difference hot-water boiler " in 1989, utilize the potential difference of water outlet water level and backwater water level to promote the hot water Natural Circulation, (select from Chinese utility model patent, title: the potential difference hot-water boiler as dynamic head; The patent No.: 88219481X; Patent application day: on December 14th, 1988; Authorize day: on November 15th, 89), be divided into upper and lower two parts with dividing plate between flue of this " potential difference hot-water boiler " and the furnace shell, top is the preheating zone, the bottom is the thermal treatment zone, heat exchanger is equipped with at the top of preheating zone, but finds in the practice that the heat exchange amount is not enough, and vaporization phenomenon is serious, dynamic head is fluctuated, has destroyed the automatic circulation of hot water in heating system.

The purpose of this utility model is a kind of water heater of design, and this water heater can be given full play to the exchange capability of heat of heat exchanger, makes dynamic head all the time normally to guarantee the automatic circulation of hot water in heating system.

The purpose of this utility model is achieved in that the inlet tube and outlet tube with water heater all is installed in the top, the outside of water heater furnace shell, on this inlet tube and outlet tube, connect a spiral heat exchanger then, make into water and water outlet reverse flow heat-shift in spiral heat exchanger, because the temperature difference of exchanged water increases, the heat exchange amount is increased, just can give full play to exchange capability of heat, produce enough stable dynamic heads and guarantee the automatic circulation of hot water in heating system.

The utility model novel structure, handling safety is reliable, is a kind of desirable energy-conserving product.

Now in conjunction with the accompanying drawings automatic circulation water heater that the utility model is carried is further described:

Fig. 1 is the schematic diagram of automatic circulation water heater that the utility model is carried.Automatic circulation water heater is mainly by furnace foundation 1 as can be seen from Figure, grate 2, furnace shell 3, flue 4, coil pipe 5, water inlet 6, discharge outlet 7, heat exchanger 8, outlet pipe 9, water inlet pipe 10, expansion tank 11, coal filling hole 12, bypass pipe 13, smokejack compositions such as (not drawing among the figure), form the preheating zone between furnace shell 3 and the flue 4, arrange in the flue 4 that coil pipe 5 is as main heating surface, bypass pipe 13 communicates coil pipe 5 with the preheating zone, heat exchanger 8 is equipped with in the outside top parallel connection that water inlet pipe 10 and outlet pipe 9 are contained in furnace shell 3, heat exchanger 8 adopts spiral heat exchanger, heat exchanger 8 both can be positioned at the top, the outside of furnace shell 3, also can be positioned at the non-heat affected zone of furnace shell 3 inside fronts, the water that returns from warmers such as fin is like this entered in the heat exchanger 8 by water inlet 6 earlier, with the high-temperature water outlet reverse flow heat-shift in heat exchanger 8 in the water heater, enter the preheating zone then, flow into heating in the coil pipe 5 through bypass pipe 13 again, and rise gradually to enter again in the heat exchanger 8 and enter the warmer from delivery port 7 after the heat exchange through outlet pipe 9, like this because the temperature difference of water inlet and water outlet is big, also just satisfied the condition that increases the heat exchange amount, produced enough and stable dynamic heads and guarantee the automatic circulation of hot water in heating system.

Claims

1, automatic circulation water heater of being made up of furnace foundation 1, grate 2, furnace shell 3, flue 4, coil pipe 5, expansion tank 11, coal filling hole 12, bypass pipe 13 etc. is characterized in that:

A, water inlet pipe 10 and outlet pipe 9 all are positioned at the top, the outside of furnace shell 3;

B, water inlet pipe 10 and outlet pipe 9 first line of a couplet are equipped with heat exchanger 8, and heat exchanger 8 is positioned at the top, the outside of furnace shell 3.

2, automatic circulation water heater according to claim 1 is characterized in that heat exchanger 8 is the spiral plate type structure.

3, automatic circulation water heater according to claim 1 is characterized in that heat exchanger 8 is positioned at the non-heat affected zone of furnace shell 3 inside fronts.